Sample records for mines internal mem

  1. MEMSNANO-2005 International conference on MEMS and Semiconductor Nanotechnology

    E-Print Network [OSTI]

    Mishra, Prabhat

    in place of polycrystalline metal oxide lead to large increase of free surface energy which in turn leads-22,2005,IIT Kharagpur,India MEMS BASED NANOCRYSTALLINE METAL OXIDE GAS SENSORS FOR COALMINE ENVIRONMENT P Metal Oxide gas sensors commonly used for sensing inflammable hydrocarbon gases and other toxic gases

  2. MINING ENGINEERING You can count on our mining engineering co-op interns for anY

    E-Print Network [OSTI]

    Skorobogatiy, Maksim

    MINING ENGINEERING You can count on our mining engineering co-op interns for anY projects involving mine development, major excavations or site rehabilitation. + our interns have much to offer You! internships allow students to become familiar with the day-to-day operations of a mine. co-op interns can work

  3. Rehabilitation of the international coal mines

    E-Print Network [OSTI]

    Cote?, Homer.

    different here than elsewhere, hut to describe, by simple mining methods, step by step the reopening of old abandoned mines from examination to successful operation of the property. TOPOGRAPHY • The Eagle Pass coal field is a small field, tri­ angular... shaped, outcropping in Maverick Co unty north­ west of Eagle Pass, Texas, from which town i t takes its name ana where al l of the mines are located. The greater part of the Eagle Pass coal bed l ies across the Rio Grande River in Mexico and has been...

  4. Proceedings, 26th international conference on ground control in mining

    SciTech Connect (OSTI)

    Peng, S.S.; Mark, C.; Finfinger, G. (and others) (eds.)

    2007-07-01T23:59:59.000Z

    Papers are presented under the following topic headings: multiple-seam mining, surface subsidence, coal pillar, bunker and roadway/entry supports, mine design and highwall mining, longwall, roof bolting, stone and hardrock mining, rock mechanics and mine seal.

  5. Proceedings, 27th international conference on ground control in mining

    SciTech Connect (OSTI)

    Peng, S.S.; Mark, C.; Finfinger, G. (and others) (eds.)

    2008-07-01T23:59:59.000Z

    Topics covered include: coal bumps and rockbursts, surface subsidence, surface mining, mine seals, longwall mining, pillars, roof bolting, rock mechanics and standing supports.

  6. International Workshop on ecological aspects on underground mining of usable minerals deposits,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    International Workshop on ecological aspects on underground mining of usable minerals deposits, GIG Ecological aspects of underground mining of usable minerals deposits, Szczyrk : Poland (1993)" #12;2/12 I and exemplary programme for the reclamation of opencast mining sites at the Herault Operations Unit

  7. USING GEOPHYSICAL METHODS TO IMAGE THE INTERNAL STRUCTURE OF MINE WASTE ROCK PILES

    E-Print Network [OSTI]

    Aubertin, Michel

    USING GEOPHYSICAL METHODS TO IMAGE THE INTERNAL STRUCTURE OF MINE WASTE ROCK PILES Campos, D.1-Noranda, Canada (bruno.bussiere@uqat.uquebec.ca) INTRODUCTION Mine waste rock piles, or rockwaste dumps rock piles. One of the most critical of these is water flow and water distribution in the waste rock

  8. Journal of Counter-Ordnance Technology (Sixth International Sym um on Technology and Mine Problem, NPS, 10-13 Uncertainty in Acoustic Mine Detection Due to

    E-Print Network [OSTI]

    Chu, Peter C.

    alternative to nuclear submarines. Technological advancements in battery design have resulted in higherJournal of Counter-Ordnance Technology (Sixth International Sym um on Technology and Mine Problem advantage of nuclear submarines is negligible to these countries. Mines come in a multitude of variations

  9. International Micro Electro Mechanical Systems Conference, MEMS 2001, Interlaken, Switzerland, January 2001 1 AN ELECTROSTATIC INDUCTION MICROMOTOR

    E-Print Network [OSTI]

    Frechette, Luc G.

    thin-film stator. Testing has demonstrated a torque of 0.3 µNm at a rotation rate of 15,000 revolutions such as polysilicon surface micromachining and high-aspect ratio LIGA processing, MEMS electrostatic and magnetic

  10. Mining

    Broader source: Energy.gov [DOE]

    Supply and cost management–including energy costs–pose key challenges for U.S. mining companies. The industry has worked with AMO to develop a range of resources for increasing energy efficiency and reducing costs.

  11. Proceedings of the Fourth IEEE International Conference on Data Mining (ICDM'04) 0-7695-2142-8/04 $ 20.00 IEEE

    E-Print Network [OSTI]

    Li, Tao

    Proceedings of the Fourth IEEE International Conference on Data Mining (ICDM'04) 0. Restrictions apply. #12;Proceedings of the Fourth IEEE International Conference on Data Mining (ICDM'04) 0 29,2010 at 01:30:56 UTC from IEEE Xplore. Restrictions apply. #12;Proceedings of the Fourth IEEE

  12. An electrothermally-actuated bistable MEMS relay for power applications

    E-Print Network [OSTI]

    Qiu, Jin, 1974-

    2003-01-01T23:59:59.000Z

    This thesis first develops a bistable mechanism that does not rely on internal stress or hinges for its bistability, which is then combined with transient electrothermal actuation and contact structure to develop a MEMS ...

  13. MEMS in microfluidic channels.

    SciTech Connect (OSTI)

    Ashby, Carol Iris Hill; Okandan, Murat; Michalske, Terry A.; Sounart, Thomas L.; Matzke, Carolyn M.

    2004-03-01T23:59:59.000Z

    Microelectromechanical systems (MEMS) comprise a new class of devices that include various forms of sensors and actuators. Recent studies have shown that microscale cantilever structures are able to detect a wide range of chemicals, biomolecules or even single bacterial cells. In this approach, cantilever deflection replaces optical fluorescence detection thereby eliminating complex chemical tagging steps that are difficult to achieve with chip-based architectures. A key challenge to utilizing this new detection scheme is the incorporation of functionalized MEMS structures within complex microfluidic channel architectures. The ability to accomplish this integration is currently limited by the processing approaches used to seal lids on pre-etched microfluidic channels. This report describes Sandia's first construction of MEMS instrumented microfluidic chips, which were fabricated by combining our leading capabilities in MEMS processing with our low-temperature photolithographic method for fabricating microfluidic channels. We have explored in-situ cantilevers and other similar passive MEMS devices as a new approach to directly sense fluid transport, and have successfully monitored local flow rates and viscosities within microfluidic channels. Actuated MEMS structures have also been incorporated into microfluidic channels, and the electrical requirements for actuation in liquids have been quantified with an elegant theory. Electrostatic actuation in water has been accomplished, and a novel technique for monitoring local electrical conductivities has been invented.

  14. MEMS fluidic actuator

    DOE Patents [OSTI]

    Kholwadwala, Deepesh K. (Albuquerque, NM); Johnston, Gabriel A. (Trophy Club, TX); Rohrer, Brandon R. (Albuquerque, NM); Galambos, Paul C. (Albuquerque, NM); Okandan, Murat (Albuquerque, NM)

    2007-07-24T23:59:59.000Z

    The present invention comprises a novel, lightweight, massively parallel device comprising microelectromechanical (MEMS) fluidic actuators, to reconfigure the profile, of a surface. Each microfluidic actuator comprises an independent bladder that can act as both a sensor and an actuator. A MEMS sensor, and a MEMS valve within each microfluidic actuator, operate cooperatively to monitor the fluid within each bladder, and regulate the flow of the fluid entering and exiting each bladder. When adjacently spaced in a array, microfluidic actuators can create arbitrary surface profiles in response to a change in the operating environment of the surface. In an embodiment of the invention, the profile of an airfoil is controlled by independent extension and contraction of a plurality of actuators, that operate to displace a compliant cover.

  15. International Conference on Ground Control in Mining During the last 25 years, technological advancement and

    E-Print Network [OSTI]

    are necessary for effective assessment and control of mining-induced subsidence, using examples and case studies, VA measured and theoretical case studies. This validation is made possible by developing new been tested extensively in numerous case studies (VPI&SU, 1987; Karmis et al., 1989; Newman et al

  16. MEMS technology for timing and frequency control

    E-Print Network [OSTI]

    Nguyen, CTC

    2007-01-01T23:59:59.000Z

    Y. Kim, “Noise in microelectromechanical system resonators,”regard, microelectromechanical systems (MEMS) technology,focus upon microelectromechanical systems (MEMS) and include

  17. The 'Mine/Yours' method of international comparisons of carbon emissions

    SciTech Connect (OSTI)

    Murtishaw, Scott; Schipper, Lee; Unander, Fridtjof

    2000-09-01T23:59:59.000Z

    In previous work (Schipper, Unander & Lilliu 1999), we summarized a new method for comparing energy use and carbon emissions among various countries. We call this the ''Mine/Yours'' comparison. In this paper, we provide details of the comparisons methodology, and carry out the comparison on a number of IEA countries. We calculate the average energy intensities I for a sample of countries (''yours'') and multiply them by structural parameters S for a particular country (''mine''). Comparing the results with the actual energy use of the country in question gives us an estimate of how much energy that country would use with average intensities but with its own structural conditions. The converse can be calculated as well, that is, average structure and own intensities. Emissions can be introduced through the F (fuel mix) term. These calculations show where differences in the components of emissions lead to large gaps among countries, and where those differences are not important. We show which components cause the largest variance in emissions by sector. In households, home size, average winter climate, and energy intensity appear to be the most important differentiating characteristics for space heating. For other residential energy uses the mix of fuels used to generate electricity (utility mix) is most important. Because some of the differences are ''built in'' - geography, climate, natural resources endowment - we conclude by questioning whether uniform emissions reductions targets make sense. Indeed, the ''Mine/Yours'' tool provides a valuable guide to important ways in which emissions may or may not be flexible.

  18. Journal of Counter-Ordnance Technology (Fifth International Symposium on Technology and Mine Problem) 1 Acoustic Mine Detection Using the Navy's

    E-Print Network [OSTI]

    Chu, Peter C.

    Problem) 1 Acoustic Mine Detection Using the Navy's CASS/GRAB Model Peter C. Chu, Carlos Cintron, Steven D the Navy's Comprehensive Acoustic Simulation System/Gaussian Ray Bundle (CASS/GRAB) model. Sound speed needs in that region. Index Terms--Acoustic mine hunting, Navy's comprehensive acoustic simulation

  19. Data mining, Data mining,

    E-Print Network [OSTI]

    Keinan, Alon

    18 Data mining, today and tomorrow Data mining, today and tomorrow We leave digital puddles useful information be extracted from this ever-growing ocean of data? Data mining is the science," says CS professor Johannes Gehrke, whose group has developed some of the fastest data-mining algo

  20. Image/Time Series Mining Algorithms: Applications to Developmental Biology, Document Processing and Data Streams

    E-Print Network [OSTI]

    Tataw, Oben Moses

    2013-01-01T23:59:59.000Z

    International Conference on Data Mining (2001). Khairy, K. ,and Eamonn Keogh (2011). Mining Historical Documents forWang, E. J. Keogh. Querying and mining of time series data.

  1. Ovenized microelectromechanical system (MEMS) resonator

    DOE Patents [OSTI]

    Olsson, Roy H; Wojciechowski, Kenneth; Kim, Bongsang

    2014-03-11T23:59:59.000Z

    An ovenized micro-electro-mechanical system (MEMS) resonator including: a substantially thermally isolated mechanical resonator cavity; a mechanical oscillator coupled to the mechanical resonator cavity; and a heating element formed on the mechanical resonator cavity.

  2. Piezoelectric MEMS for energy harvesting

    E-Print Network [OSTI]

    Kim, Sang-Gook

    Piezoelectric microelectromechanical systems (MEMS) have been proven to be an attractive technology for harvesting small magnitudes of energy from ambient vibrations. This technology promises to eliminate the need for ...

  3. Salon International des Energies (SIDE), International Energy Exhibition & Conference Oil, Gas, Mining, RnE, October 2 -5, 2012 Palais des Congrs -Marrakech, Maroc.

    E-Print Network [OSTI]

    Olsen, Paul E.

    , Mining, RnE, October 2 - 5, 2012 Palais des Congrès - Marrakech, Maroc. Potential source rocks of Late

  4. Chapter 22. Nanofluidic BioMEMS Research Nano/Microfluidic BioMEMS Research

    E-Print Network [OSTI]

    Chapter 22. Nanofluidic BioMEMS Research 22-1 Nano/Microfluidic BioMEMS Research RLE Group Micro / Nanofluidic BioMEMS Group Academic and Research Staff Professor Jongyoon Han Research Affiliates Dr. Yong 10, Sophomore) Overview of group Nanofluidic BioMEMS group in RLE (Han group) is exploring various

  5. Towards and industrial ecosystem for power MEMS

    E-Print Network [OSTI]

    Havel, Timothy Franklin

    2007-01-01T23:59:59.000Z

    This thesis is concerned with the commercial applications of MEMS (Micro-Electro-Mechanical Systems) manufacturing processes to advanced energy technologies. This field of engineering has come to be known as Power MEMS. ...

  6. RF MEMS switches : survey and analysis

    E-Print Network [OSTI]

    Machal-Cajigas, Antoinne Y

    2009-01-01T23:59:59.000Z

    Microelectromechanical systems known as MEMS, are an enabling technology that describe a field capable of creating very small electromechanical devices with feature sizes on the order of microns, or 10-6 meters. MEMS ...

  7. Inertial measurement unit using rotatable MEMS sensors

    DOE Patents [OSTI]

    Kohler, Stewart M.; Allen, James J.

    2006-06-27T23:59:59.000Z

    A MEM inertial sensor (e.g. accelerometer, gyroscope) having integral rotational means for providing static and dynamic bias compensation is disclosed. A bias compensated MEM inertial sensor is described comprising a MEM inertial sense element disposed on a rotatable MEM stage. A MEM actuator for drives the rotation of the stage between at least two predetermined rotational positions. Measuring and comparing the output of the MEM inertial sensor in the at least two rotational positions allows, for both static and dynamic bias compensation in inertial calculations based on the sensor's output. An inertial measurement unit (IMU) comprising a plurality of independently rotatable MEM inertial sensors and methods for making bias compensated inertial measurements are disclosed.

  8. Inertial measurement unit using rotatable MEMS sensors

    DOE Patents [OSTI]

    Kohler, Stewart M. (Albuquerque, NM); Allen, James J. (Albuquerque, NM)

    2007-05-01T23:59:59.000Z

    A MEM inertial sensor (e.g. accelerometer, gyroscope) having integral rotational means for providing static and dynamic bias compensation is disclosed. A bias compensated MEM inertial sensor is described comprising a MEM inertial sense element disposed on a rotatable MEM stage. A MEM actuator drives the rotation of the stage between at least two predetermined rotational positions. Measuring and comparing the output of the MEM inertial sensor in the at least two rotational positions allows for both static and dynamic bias compensation in inertial calculations based on the sensor's output. An inertial measurement unit (IMU) comprising a plurality of independently rotatable MEM inertial sensors and methods for making bias compensated inertial measurements are disclosed.

  9. Ultrananocrystalline diamond thin films for MEMS and moving mechanical assembly devices.

    SciTech Connect (OSTI)

    Krauss, A. R.; Gruen, D. M.; Jayatissa, A.; Sumant, A.; Tucek, J.; Auciello, O.; Mancini, D.; Moldovan, N.; Erdemir, A.; Ersoy, D.; Gardos, M. N.; Busmann, H. G.; Meyer, E. M.; Ding, M. Q.; Univ. of Illinois at Chicago; Raytheon Electronic Systems Comp.; Fraunhofer Inst. for Applied Materials Science; Univ. of Bremen; Beijing Inst. of Electronics

    2001-11-01T23:59:59.000Z

    MEMS devices are currently fabricated primarily in silicon because of the available surface machining technology. A major problem with the Si-based MEMS technology is that Si has poor mechanical and tribological properties [J.J. Sniegowski, in: B. Bushan (Ed.), Tribology Issues and Opportunities in MEMS, Kluwer Academic Publisher, The Netherlands, 1998, p. 325; A.P. Lee, A.P. Pisano, M.G. Lim, Mater. Res. Soc. Symp. Proc. 276 (1992) 67.], and practical MEMS devices are currently limited primarily to applications involving only bending and flexural motion, such as cantilever accelerometers and vibration sensors. However, because of the poor flexural strength and fracture toughness of Si, and the tendency of Si to adhere to hydrophilic surfaces, even these simple devices have limited dynamic range. Future MEMS applications that involve significant rolling or sliding contact will require the use of new materials with significantly improved mechanical and tribological properties, and the ability to perform well in harsh environments, Diamond is a superhard material of high mechanical strength, exceptional chemical inertness, and outstanding thermal stability. The brittle fracture strength is 23 times that of Si, and the projected wear life of diamond MEMS moving mechanical assemblies (MEMS MMAs) is 10 000 times greater than that of Si MMAs. However, as the hardest known material, diamond is notoriously difficult to fabricate. Conventional CVD thin film deposition methods offer an approach to the fabrication of ultra-small diamond structures, but the films have large grain size, high internal stress, poor intergranular adhesion, and very rough surfaces, and are consequently ill-suited for MEMS MMA applications. Diamond-like films are also being investigated for application to MEMS devices. However, they involve mainly physical vapor deposition methods that are not suitable for good conformal deposition on high aspect ratio features, and generally they do not exhibit the outstanding mechanical properties of diamond. We demonstrate here the application of a novel microwave plasma technique using a unique C{sub 60}/Ar or CH{sub 4}/Ar chemistry that produces phase-pure ultrananocrystalline diamond (UNCD) coatings with morphological and mechanical properties that are ideally suited for MEMS applications in general, and MMA use in particular. We have developed lithographic techniques for the fabrication of UNCD-MEMS components, including cantilevers and multi-level devices, acting as precursors to microbearings and gears, making UNCD a promising material for the development of high performance MEMS devices.

  10. Amorphous Diamond MEMS and Sensors

    SciTech Connect (OSTI)

    SULLIVAN, JOHN P.; FRIEDMANN, THOMAS A.; ASHBY, CAROL I.; DE BOER, MAARTEN P.; SCHUBERT, W. KENT; SHUL, RANDY J.; HOHLFELDER, ROBERT J.; LAVAN, D.A.

    2002-06-01T23:59:59.000Z

    This report describes a new microsystems technology for the creation of microsensors and microelectromechanical systems (MEMS) using stress-free amorphous diamond (aD) films. Stress-free aD is a new material that has mechanical properties close to that of crystalline diamond, and the material is particularly promising for the development of high sensitivity microsensors and rugged and reliable MEMS. Some of the unique properties of aD include the ability to easily tailor film stress from compressive to slightly tensile, hardness and stiffness 80-90% that of crystalline diamond, very high wear resistance, a hydrophobic surface, extreme chemical inertness, chemical compatibility with silicon, controllable electrical conductivity from insulating to conducting, and biocompatibility. A variety of MEMS structures were fabricated from this material and evaluated. These structures included electrostatically-actuated comb drives, micro-tensile test structures, singly- and doubly-clamped beams, and friction and wear test structures. It was found that surface micromachined MEMS could be fabricated in this material easily and that the hydrophobic surface of the film enabled the release of structures without the need for special drying procedures or the use of applied hydrophobic coatings. Measurements using these structures revealed that aD has a Young's modulus of {approx}650 GPa, a tensile fracture strength of 8 GPa, and a fracture toughness of 8 MPa{center_dot}m {sup 1/2}. These results suggest that this material may be suitable in applications where stiction or wear is an issue. Flexural plate wave (FPW) microsensors were also fabricated from aD. These devices use membranes of aD as thin as {approx}100 nm. The performance of the aD FPW sensors was evaluated for the detection of volatile organic compounds using ethyl cellulose as the sensor coating. For comparable membrane thicknesses, the aD sensors showed better performance than silicon nitride based sensors. Greater than one order of magnitude increase in chemical sensitivity is expected through the use of ultra-thin aD membranes in the FPW sensor. The discoveries and development of the aD microsystems technology that were made in this project have led to new research projects in the areas of aD bioMEMS and aD radio frequency MEMS.

  11. Mines and Mining (Maryland)

    Broader source: Energy.gov [DOE]

    It is the policy of the state to encourage the development of mined resources in Maryland while protecting the environment and public health and safety. This legislation establishes the Bureau of...

  12. Using MEMS-Based Storage in Computer Systems --MEMS Storage Architectures

    E-Print Network [OSTI]

    Miller, Ethan L.

    Using MEMS-Based Storage in Computer Systems -- MEMS Storage Architectures Bo Hong Feng Wang. E. Schwarz, S. J. Santa Clara University As an emerging non-volatile secondary storage technology, MEMS-based storage exhibits sev- eral desirable properties including high performance, high storage

  13. High Efficiency Optical MEMS by the Integration of Photonic Lattices with Surface MEMS

    SciTech Connect (OSTI)

    FLEMING, JAMES G.; LIN, SHAWN-YU; MANI, SEETHAMBAL S.; RODGERS, M. STEVEN; DAGEL, DARYL J.

    2002-11-01T23:59:59.000Z

    This report outlines our work on the integration of high efficiency photonic lattice structures with MEMS (MicroElectroMechanical Systems). The simplest of these structures were based on 1-D mirror structures. These were integrated into a variety of devices, movable mirrors, switchable cavities and finally into Bragg fiber structures which enable the control of light in at least 2 dimensions. Of these devices, the most complex were the Bragg fibers. Bragg fibers consist of hollow tubes in which light is guided in a low index media (air) and confined by surrounding Bragg mirror stacks. In this work, structures with internal diameters from 5 to 30 microns have been fabricated and much larger structures should also be possible. We have demonstrated the fabrication of these structures with short wavelength band edges ranging from 400 to 1600nm. There may be potential applications for such structures in the fields of integrated optics and BioMEMS. We have also looked at the possibility of waveguiding in 3 dimensions by integrating defects into 3-dimensional photonic lattice structures. Eventually it may be possible to tune such structures by mechanically modulating the defects.

  14. MEMS packaging efforts at Sandia National Laboratories.

    SciTech Connect (OSTI)

    Custer, Jonathan Sloane

    2003-02-01T23:59:59.000Z

    Sandia National Laboratories has programs covering a broad range of MEMS technologies from LIGA to bulk to surface micromachining. These MEMS technologies are being considered for an equally broad range of applications, including sensors, actuators, optics, and microfluidics. As these technologies have moved from the research to the prototype product stage, packaging has been required to develop new capabilities to integrated MEMS and other technologies into functional microsystems. This paper discusses several of Sandia's MEMS packaging efforts, focusing mainly on inserting Sandia's SUMMIT V (5-level polysilicon) surface micromachining technology into fieldable microsystems.

  15. Challenges in the Packaging of MEMS

    SciTech Connect (OSTI)

    Malshe, A.P.; Singh, S.B.; Eaton, W.P.; O'Neal, C.; Brown, W.D.; Miller, W.M.

    1999-03-26T23:59:59.000Z

    The packaging of Micro-Electro-Mechanical Systems (MEMS) is a field of great importance to anyone using or manufacturing sensors, consumer products, or military applications. Currently much work has been done in the design and fabrication of MEMS devices but insufficient research and few publications have been completed on the packaging of these devices. This is despite the fact that packaging is a very large percentage of the total cost of MEMS devices. The main difference between IC packaging and MEMS packaging is that MEMS packaging is almost always application specific and greatly affected by its environment and packaging techniques such as die handling, die attach processes, and lid sealing. Many of these aspects are directly related to the materials used in the packaging processes. MEMS devices that are functional in wafer form can be rendered inoperable after packaging. MEMS dies must be handled only from the chip sides so features on the top surface are not damaged. This eliminates most current die pick-and-place fixtures. Die attach materials are key to MEMS packaging. Using hard die attach solders can create high stresses in the MEMS devices, which can affect their operation greatly. Low-stress epoxies can be high-outgassing, which can also affect device performance. Also, a low modulus die attach can allow the die to move during ultrasonic wirebonding resulting to low wirebond strength. Another source of residual stress is the lid sealing process. Most MEMS based sensors and devices require a hermetically sealed package. This can be done by parallel seam welding the package lid, but at the cost of further induced stress on the die. Another issue of MEMS packaging is the media compatibility of the packaged device. MEMS unlike ICS often interface with their environment, which could be high pressure or corrosive. The main conclusion we can draw about MEMS packaging is that the package affects the performance and reliability of the MEMS devices. There is a gross lack of understanding between the package materials, induced stress, and the device performance. The material properties of these packaging materials are not well defined or understood. Modeling of these materials and processes is far from maturity. Current post-package yields are too low for commercial feasibility, and consumer operating environment reliability and compatibility are often difficult to simulate. With further understanding of the materials properties and behavior of the packaging materials, MEMS applications can be fully realized and integrated into countless commercial and military applications.

  16. Longwall mining

    SciTech Connect (OSTI)

    NONE

    1995-03-14T23:59:59.000Z

    As part of EIA`s program to provide information on coal, this report, Longwall-Mining, describes longwall mining and compares it with other underground mining methods. Using data from EIA and private sector surveys, the report describes major changes in the geologic, technological, and operating characteristics of longwall mining over the past decade. Most important, the report shows how these changes led to dramatic improvements in longwall mining productivity. For readers interested in the history of longwall mining and greater detail on recent developments affecting longwall mining, the report includes a bibliography.

  17. Efficiency optimization of an electrodynamic MEMS microspeaker

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Efficiency optimization of an electrodynamic MEMS microspeaker I. Shahosseinia , E. Lefeuvrea , J to maximize the electroacoustic conversion efficiency. The optimization method takes into account that the efficiency of optimized MEMS microspeaker could be up to ten times greater than that of conventional

  18. PLANAR MEMS SUPERCAPACITOR USING CARBON NANOTUBE FORESTS

    E-Print Network [OSTI]

    Lin, Liwei

    PLANAR MEMS SUPERCAPACITOR USING CARBON NANOTUBE FORESTS Y.Q. Jiang, Q. Zhou, and L. Lin Mechanical ABSTRACT Planar micro supercapacitors utilizing vertically aligned carbon nanotube (CNT) forests and very robust cycling stability. As such, we believe these planar MEMS supercapacitors could

  19. Micro electromechanical systems (MEMS) for mechanical engineers

    SciTech Connect (OSTI)

    Lee, A. P., LLNL

    1996-11-18T23:59:59.000Z

    The ongoing advances in Microelectromechanical Systems (MEMS) are providing man-kind the freedom to travel to dimensional spaces never before conceivable. Advances include new fabrication processes, new materials, tailored modeling tools, new fabrication machines, systems integration, and more detailed studies of physics and surface chemistry as applied to the micro scale. In the ten years since its inauguration, MEMS technology is penetrating industries of automobile, healthcare, biotechnology, sports/entertainment, measurement systems, data storage, photonics/optics, computer, aerospace, precision instruments/robotics, and environment monitoring. It is projected that by the turn of the century, MEMS will impact every individual in the industrial world, totaling sales up to $14 billion (source: System Planning Corp.). MEMS programs in major universities have spawned up all over the United States, preparing the brain-power and expertise for the next wave of MEMS breakthroughs. It should be pointed out that although MEMS has been initiated by electrical engineering researchers through the involvement of IC fabrication techniques, today it has evolved such that it requires a totally multi-disciplinary team to develop useful devices. Mechanical engineers are especially crucial to the success of MEMS development, since 90% of the physical realm involved is mechanical. Mechanical engineers are needed for the design of MEMS, the analysis of the mechanical system, the design of testing apparatus, the implementation of analytical tools, and the packaging process. Every single aspect of mechanical engineering is being utilized in the MEMS field today, however, the impact could be more substantial if more mechanical engineers are involved in the systems level designing. In this paper, an attempt is made to create the pathways for a mechanical engineer to enter in the MEMS field. Examples of application in optics and medical devices will be used to illustrate how mechanical engineers made impact. Through a basic understanding of the history of MEMS, the background physics and scaling in micromechanical systems, and an introduction to baseline MEMS processes, a mechanical engineer should be well on his way to Alice's wonderland in the ever-exciting playground of MEMS.

  20. Design of Surface Micromachined Compliant MEMS

    SciTech Connect (OSTI)

    Joe Anthony Bradley

    2002-12-31T23:59:59.000Z

    The consideration of compliant mechanisms as Microelectromechanical Systems (MEMS) is the focus of this research endeavor. MEMS are micron to millimeter devices that combine electrical, mechanical, and information processing capabilities on the same device. These MEMS need some mechanical motion or parts that move relative to each other. This relative motion, using multiple parts, is not desired because of the assembly requirement and the friction introduced. Compliant devices limits or eliminates friction and the need for multi-component assembly. Compliant devices improve designs by creating single piece mechanisms. The purpose of this research is to validate surface micromachining as a viable fabrication process for compliant MEMS designs. Specifically, this research has sought to fabricate a micro-compliant gripper and a micro-compliant clamp to illustrate the process. While other researchers have created compliant MEMs, most have used comb-drive actuation methods and bulk micromachining processes. This research focused on fully-compliant devices that use device flexibility for motion and actuation. Validation of these compliant MEMS is achieved by structural optimization of device design and functional performance testing. This research contributes to the ongoing research in MEMS by evaluating the potential of using surface micromachining as a process for fabricating compliant micro-mechanisms.

  1. Design of Surface micromachined Compliant MEMS

    SciTech Connect (OSTI)

    Joe Anthony Bradley

    2002-08-01T23:59:59.000Z

    The consideration of compliant mechanisms as Microelectromechanical Systems (MEMS) is the focus of this research endeavor. MEMS are micron to millimeter devices that combine electrical, mechanical, and information processing capabilities on the same device. These MEMS need some mechanical motion or parts that move relative to each other. This relative motion, using multiple parts, is not desired because of the assembly requirement and the friction introduced. Compliant devices limits or eliminates friction and the need for multi-component assembly. Compliant devices improve designs by creating single piece mechanisms. The purpose of this research is to validate surface micromachining as a viable fabrication process for compliant MEMS designs. Specifically, this research has sought to fabricate a micro-compliant gripper and a micro-compliant clamp to illustrate the process. While other researchers have created compliant MEMS, most have used comb-drive actuation methods and bulk micromachining processes. This research focuses on fully-compliant devices that use device flexibility for motion and actuation. Validation of these compliant MEMS is achieved by structural optimization of device design and functional performance testing. This research contributes to the ongoing research in MEMS by evaluating the potential of using surface micromachining as a process for fabricating compliant micro-mechanisms.

  2. Mining (Montana)

    Broader source: Energy.gov [DOE]

    This section provides general rules and regulations pertaining to mining practices in the state of Montana. It addresses mining locations and claims, procedures for rights-of-way and eminent domain...

  3. Department of MINING ENGINEERING

    E-Print Network [OSTI]

    Simons, Jack

    AS A MINING ENGINEER IMAGINE IMAGINE Department of MINING ENGINEERING THE UNIVERSITY OF UTAH www.mining

  4. Data Mining 4.6. " "

    E-Print Network [OSTI]

    Mustakerov, Ivan

    1 . . Data Mining "" 4.6. " " ( 01.01.12. "") . . .. 2012. .- - - , , .". . ", .2. : : Data Mining #12;3 (Data Mining) - 20-25 . , , , , , . , (Data Mining) , , , , . Data Mining . Data Mining

  5. Data Mining Students' Ordinary Handwritten Coursework

    E-Print Network [OSTI]

    Herold, James

    2013-01-01T23:59:59.000Z

    Data Mining . . . . . . . . . . . . . . . . . . . . . . .Mining . . . . . . . . . . . . . . . . . . . . . . . . .Sequence Mining 6.1 Introduction . . . . . . . . .

  6. Solder self-assembly for MEMS fabrication

    E-Print Network [OSTI]

    Au, Hin Meng, 1977-

    2004-01-01T23:59:59.000Z

    This thesis examines and demonstrates self-assembly of MEMS components on the 25 micron scale onto substrates using the capillary force of solder. This is an order of magnitude smaller than current solder self-assembly in ...

  7. Si-based RF MEMS components.

    SciTech Connect (OSTI)

    Stevens, James E.; Nordquist, Christopher Daniel; Baker, Michael Sean; Fleming, James Grant; Stewart, Harold D.; Dyck, Christopher William

    2005-01-01T23:59:59.000Z

    Radio frequency microelectromechanical systems (RF MEMS) are an enabling technology for next-generation communications and radar systems in both military and commercial sectors. RF MEMS-based reconfigurable circuits outperform solid-state circuits in terms of insertion loss, linearity, and static power consumption and are advantageous in applications where high signal power and nanosecond switching speeds are not required. We have demonstrated a number of RF MEMS switches on high-resistivity silicon (high-R Si) that were fabricated by leveraging the volume manufacturing processes available in the Microelectronics Development Laboratory (MDL), a Class-1, radiation-hardened CMOS manufacturing facility. We describe novel tungsten and aluminum-based processes, and present results of switches developed in each of these processes. Series and shunt ohmic switches and shunt capacitive switches were successfully demonstrated. The implications of fabricating on high-R Si and suggested future directions for developing low-loss RF MEMS-based circuits are also discussed.

  8. Piezoelectric MEMS resonator characterization and filter design

    E-Print Network [OSTI]

    Kang, Joung-Mo, 1978-

    2004-01-01T23:59:59.000Z

    This thesis presents modeling and first measurements of a new piezoelectric MEMS resonator developed at Draper Laboratory. In addition, some simple filter designs incorporating the resonator with predicted performance ...

  9. MEMS BASED DOPPLER VELOCITY MEASUREMENT SYSTEM

    E-Print Network [OSTI]

    White, Robert D.

    .2 Doppler Effect...................................................................................10 2MEMS BASED DOPPLER VELOCITY MEASUREMENT SYSTEM A dissertation submitted by Minchul Shin IN PARTIAL micromachined ultrasonic transducer (cMUT) based in-air Doppler velocity measurement system using a 1 cm2 planar

  10. LLM Oil, Gas and Mining Law Module Information: Oil, Gas and Mining Investment Law I and

    E-Print Network [OSTI]

    Evans, Paul

    LLM Oil, Gas and Mining Law Module Information: Oil, Gas and Mining Investment Law I and Oil, Gas and Mining Investment Law II Overview & Aims: This core module aims to introduce students to the political economy background as well as the international legal framework for transnational foreign investment

  11. Challenges in the Packaging of MEMS

    SciTech Connect (OSTI)

    BROWN, WILLIAM D.; EATON, WILLIAM P.; MALSHE, AJAY P.; MILLER, WILLIAM M.; O'NEAL, CHAD; SINGH, SUSHILA B.

    1999-09-24T23:59:59.000Z

    Microelectromechanical Systems (MEMS) packaging is much different from conventional integrated circuit (IC) packaging. Many MEMS devices must interface to the environment in order to perform their intended function, and the package must be able to facilitate access with the environment while protecting the device. The package must also not interfere with or impede the operation of the MEMS device. The die attachment material should be low stress, and low outgassing, while also minimizing stress relaxation overtime which can lead to scale factor shifts in sensor devices. The fabrication processes used in creating the devices must be compatible with each other, and not result in damage to the devices. Many devices are application specific requiring custom packages that are not commercially available. Devices may also need media compatible packages that can protect the devices from harsh environments in which the MEMS device may operate. Techniques are being developed to handle, process, and package the devices such that high yields of functional packaged parts will result. Currently, many of the processing steps are potentially harmful to MEMS devices and negatively affect yield. It is the objective of this paper to review and discuss packaging challenges that exist for MEMS systems and to expose these issues to new audiences from the integrated circuit packaging community.

  12. Seventh International Symposium on Technology and Mine Problem, NPS, Monterey, California, USA, 2-4 May, 2006 1 Abstract -The Navy's Impact Burial Model (IMPACT35)

    E-Print Network [OSTI]

    Chu, Peter C.

    -4 May, 2006 1 1 Abstract - The Navy's Impact Burial Model (IMPACT35) predicts the cylindrical mine.S. Navy from "blue" water, anti-Soviet focus, towards a concentration on the regional littoral threats of the world. With the increasing number of regional and asymmetric threats, the Navy must operate effectively

  13. New approach for modelling distributed MEMS transmission lines

    E-Print Network [OSTI]

    Akin, Tayfun

    New approach for modelling distributed MEMS transmission lines K. Topalli, M. Unlu, S. Demir, O for the distributed MEMS transmission line (DMTL) structures. In this new model, the MEMS bridges that are used as the loading elements of the DMTL structures are represented as low-impedance transmission lines, rather than

  14. Proceedings of Office of Surface Mining Coal Combustion By-product Government/Regulatory Panel: University of Kentucky international ash utilization symposium

    SciTech Connect (OSTI)

    Vories, K.C. (ed.)

    2003-07-01T23:59:59.000Z

    Short papers are given on: the Coal Combustion Program (C2P2) (J. Glenn); regional environmental concerns with disposal of coal combustion wastes at mines (T. FitzGerald); power plant waste mine filling - an environmental perspective (L.G. Evans); utility industry perspective regarding coal combustion product management and regulation (J. Roewer); coal combustion products opportunities for beneficial use (D.C. Goss); state perspective on mine placement of coal combustion by-products (G.E. Conrad); Texas regulations provide for beneficial use of coal combustion ash (S.S. Ferguson); and the Surface Mining Control and Reclamation Act - a response to concerns about placement of CCBs at coal mine sites (K.C. Vories). The questions and answers are also included.

  15. Failure analysis issues in microelectromechanical systems (MEMS).

    SciTech Connect (OSTI)

    Walraven, Jeremy Allen

    2005-07-01T23:59:59.000Z

    Failure analysis and device characterization of MEMS components are critical steps in understanding the root causes of failure and improving device performance. At the wafer and die level these tasks can be performed with little or no sample preparation. Larger challenges occur after fabrication when the device is packaged, capped, sealed, or otherwise obstructed from view. The challenges and issues of MEMS failure analysis lie in identifying the root cause of failure for these packaged, capped, and sealed devices without perturbing the device or its immediate environment. Novel methods of gaining access to the device or preparing the device for analysis are crucial to accurately determining the root cause of failure. This paper will discuss issues identified in performing root cause failure analysis of packaged MEMS devices, as well as the methods employed to analyze them.

  16. Release Resistant Electrical Interconnections For Mems Devices

    DOE Patents [OSTI]

    Peterson, Kenneth A. (Albuquerque, NM); Garrett, Stephen E. (Albuquerque, NM); Reber, Cathleen A. (Corrales, NM)

    2005-02-22T23:59:59.000Z

    A release resistant electrical interconnection comprising a gold-based electrical conductor compression bonded directly to a highly-doped polysilicon bonding pad in a MEMS, IMEMS, or MOEMS device, without using any intermediate layers of aluminum, titanium, solder, or conductive adhesive disposed in-between the conductor and polysilicon pad. After the initial compression bond has been formed, subsequent heat treatment of the joint above 363 C creates a liquid eutectic phase at the bondline comprising gold plus approximately 3 wt % silicon, which, upon re-solidification, significantly improves the bond strength by reforming and enhancing the initial bond. This type of electrical interconnection is resistant to chemical attack from acids used for releasing MEMS elements (HF, HCL), thereby enabling the use of a "package-first, release-second" sequence for fabricating MEMS devices. Likewise, the bond strength of an Au--Ge compression bond may be increased by forming a transient liquid eutectic phase comprising Au-12 wt % Ge.

  17. Introduction to applications and industries for Microelectromechanical Systems (MEMS).

    SciTech Connect (OSTI)

    Walraven, Jeremy Allen

    2003-07-01T23:59:59.000Z

    Microelectromechanical Systems (MEMS) have gained acceptance as viable products for many commercial and government applications. MEMS are currently being used as displays for digital projection systems, sensors for airbag deployment systems, inkjet print head systems, and optical routers. This paper will discuss current and future MEMS applications. What are MEMS? MEMS are typically defined as microscopic devices designed, processed, and used to interact or produce changes within a local environment. A mechanical, electrical, or chemical stimulus can be used to create a mechanical, electrical, or chemical response in a local environment. These smaller, more sophisticated devices that think, act, sense, and communicate are replacing their bulk counterparts in many traditional applications.

  18. High-speed, sub-pull-in voltage MEMS switching.

    SciTech Connect (OSTI)

    Spahn, Olga Blum; Brewer, Steven; Olsson, Roy H.; Bogart, Gregory R.; Luck, David L.; Watts, Michael R.; Shaw, Michael J.; Nielson, Gregory N.; Resnick, Paul James; Tigges, Christopher P.; Grossetete, Grant David

    2008-01-01T23:59:59.000Z

    We have proposed and demonstrated MEMS switching devices that take advantage of the dynamic behavior of the MEMS devices to provide lower voltage actuation and higher switching speeds. We have explored the theory behind these switching techniques and have demonstrated these techniques in a range of devices including MEMS micromirror devices and in-plane parallel plate MEMS switches. In both devices we have demonstrated switching speeds under one microsecond which has essentially been a firm limit in MEMS switching. We also developed low-loss silicon waveguide technology and the ability to incorporate high-permittivity dielectric materials with MEMS. The successful development of these technologies have generated a number of new projects and have increased both the MEMS switching and optics capabilities of Sandia National Laboratories.

  19. Quarrying and Mining (Stone)

    E-Print Network [OSTI]

    Bloxam, Elizabeth

    2010-01-01T23:59:59.000Z

    the author.   Quarrying and Mining (Stone), Bloxam, UEE 2010archaeology and anthropology of mining. In Social approachesand anthropology of mining, ed. Bernard Knapp, Vincent

  20. MEMS micropump for a Micro Gas Analyzer

    E-Print Network [OSTI]

    Sharma, Vikas, 1979-

    2009-01-01T23:59:59.000Z

    This thesis presents a MEMS micro-vacuum pump designed for use in a portable gas analysis system. It is designed to be pneumatically-driven and as such does not have self-contained actuation (the focus of future work). ...

  1. Mining engineering College of Engineering and Mines

    E-Print Network [OSTI]

    Hartman, Chris

    Mining engineering College of Engineering and Mines Department of Mining and Geological Engineering As the nation's northernmost accredited mining engineering program, our mission is to advance and disseminate. The mining engineering program emphasizes engineering as it ap- plies to the exploration and development

  2. Method and instrumentation for the measurement and characterization of MEMS fabricated electrical contacts

    E-Print Network [OSTI]

    Read, Melissa B. (Melissa Beth), 1982-

    2010-01-01T23:59:59.000Z

    MEMS fabricated electrical contacts consist of two MEMS fabricated surfaces which are physically separated and brought together for the purpose of carrying current. MEMS fabricated electrical contacts are used in a wide ...

  3. Monolithic integration of a MOSFET with a MEMS device

    DOE Patents [OSTI]

    Bennett, Reid (Albuquerque, NM); Draper, Bruce (Albuquerque, MN)

    2003-01-01T23:59:59.000Z

    An integrated microelectromechanical system comprises at least one MOSFET interconnected to at least one MEMS device on a common substrate. A method for integrating the MOSFET with the MEMS device comprises fabricating the MOSFET and MEMS device monolithically on the common substrate. Conveniently, the gate insulator, gate electrode, and electrical contacts for the gate, source, and drain can be formed simultaneously with the MEMS device structure, thereby eliminating many process steps and materials. In particular, the gate electrode and electrical contacts of the MOSFET and the structural layers of the MEMS device can be doped polysilicon. Dopant diffusion from the electrical contacts is used to form the source and drain regions of the MOSFET. The thermal diffusion step for forming the source and drain of the MOSFET can comprise one or more of the thermal anneal steps to relieve stress in the structural layers of the MEMS device.

  4. RF-MEMS Switched Varactors for Medium Power Applications

    E-Print Network [OSTI]

    Maury, F; Crunteanu, A; Conseil, F; Blondy, P

    2008-01-01T23:59:59.000Z

    In RF (Radio Frequency) domain, one of the limitations of using MEMS (Micro Electromechanical Systems) switching devices for medium power applications is RF power. Failure phenomena appear even for 500 mW. A design of MEMS switched capacitors with an enhanced topology is presented in this paper to prevent it. This kind of device and its promising performances will serve to fabricate a MEMS based phase shifter able to work under several watts.

  5. 1184 JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 18, NO. 6, DECEMBER 2009 A Parylene MEMS Electrothermal Valve

    E-Print Network [OSTI]

    Meng, Ellis

    application in the reliable fabrication of nanotube-based electronic and microelectromechanical systems (MEMS for incorporation into next-generation electronic and microelectromechanical systems (MEMS) devices. Indeed, many

  6. PROCESS MINING OF EVENT LOGS IN AUDITING: OPPORTUNITIES AND Hasselt University

    E-Print Network [OSTI]

    Lin, Xiaodong

    1 PROCESS MINING OF EVENT LOGS IN AUDITING: OPPORTUNITIES AND CHALLENGES Mieke Jans Hasselt 15, 20101 1 Comments are welcome and may be addressed to mieke.jans@uhasselt.be. #12;2 PROCESS MINING that process mining of event logs can provide to internal and external auditors. Process mining aims to extract

  7. Thin Film Encapsulation Methods for Large Area MEMS Packaging

    E-Print Network [OSTI]

    Mahajerin, Armon

    2012-01-01T23:59:59.000Z

    Journal of Microelectromechanical Systems, vol. 2, no. 1,Journal of Microelectromechanical Systems, vol. 13, no. 5,Judy, “Microelectromechanical systems (MEMS): fabrication,

  8. Polymer-Ceramic MEMS Bimorphs as Thermal Infrared Sensors

    E-Print Network [OSTI]

    Warren, Clinton Gregory

    2010-01-01T23:59:59.000Z

    Recent Developments in Polymer MEMS. Advanced Materials,using thin silicon/polymer bimorph membranes. Sensors andof cantilever arrays reveal polymer film expansion and

  9. Silicon on Nothing Mems Electromechanical Resonator

    E-Print Network [OSTI]

    Durand, C; Ancey, P; Judong, F; Talbot, A; Quenouillere, R; Renaud, D; Borel, S; Florin, B; Buchaillot, L

    2008-01-01T23:59:59.000Z

    The very significant growth of the wireless communication industry has spawned tremendous interest in the development of high performances radio frequencies (RF) components. Micro Electro Mechanical Systems (MEMS) are good candidates to allow reconfigurable RF functions such as filters, oscillators or antennas. This paper will focus on the MEMS electromechanical resonators which show interesting performances to replace SAW filters or quartz reference oscillators, allowing smaller integrated functions with lower power consumption. The resonant frequency depends on the material properties, such as Young's modulus and density, and on the movable mechanical structure dimensions (beam length defined by photolithography). Thus, it is possible to obtain multi frequencies resonators on a wafer. The resonator performance (frequency, quality factor) strongly depends on the environment, like moisture or pressure, which imply the need for a vacuum package. This paper will present first resonator mechanisms and mechanical...

  10. MEMS-Based Pyroelectric Thermal Energy Scavenger

    Energy Innovation Portal (Marketing Summaries) [EERE]

    2010-12-07T23:59:59.000Z

    A new type of microelectromechanical system (MEMS ) high efficiency heat energy converter, or scavenger, was invented by ORNL researchers. This device is based on temperature cycled cantilevered pyroelectric capacitors. The scavenger converts thermal waste heat to electricity that can be used to monitor sensor systems, or recycled to provide electrical power while simultaneously reducing thermal cooling requirements. Given the current state of global industry, which discharges over 100...

  11. Radioisotope Power Sources for MEMS Devices,

    SciTech Connect (OSTI)

    Blanchard, J.P.

    2001-06-17T23:59:59.000Z

    Microelectromechanical systems (MEMS) comprise a rapidly expanding research field with potential applications varying from sensors in airbags to more recent optical applications. Depending on the application, these devices often require an on-board power source for remote operation, especially in cases requiring operation for an extended period of time. Previously suggested power sources include fossil fuels and solar energy, but nuclear power sources may provide significant advantages for certain applications. Hence, the objective of this study is to establish the viability of using radioisotopes to power realistic MEMS devices. A junction-type battery was constructed using silicon and a {sup 63}Ni liquid source. A source volume containing 64 {micro}Ci provided a power of {approx}0.07 nW. A more novel application of nuclear sources for MEMS applications involves the creation of a resonator that is driven by charge collection in a cantilever beam. Preliminary results have established the feasibility of this concept, and future work will optimize the design for various applications.

  12. Solid oxide MEMS-based fuel cells

    DOE Patents [OSTI]

    Jankowksi, Alan F.; Morse, Jeffrey D.

    2007-03-13T23:59:59.000Z

    A micro-electro-mechanical systems (MEMS) based thin-film fuel cells for electrical power applications. The MEMS-based fuel cell may be of a solid oxide type (SOFC), a solid polymer type (SPFC), or a proton exchange membrane type (PEMFC), and each fuel cell basically consists of an anode and a cathode separated by an electrolyte layer. The electrolyte layer can consist of either a solid oxide or solid polymer material, or proton exchange membrane electrolyte materials may be used. Additionally catalyst layers can also separate the electrodes (cathode and anode) from the electrolyte. Gas manifolds are utilized to transport the fuel and oxidant to each cell and provide a path for exhaust gases. The electrical current generated from each cell is drawn away with an interconnect and support structure integrated with the gas manifold. The fuel cells utilize integrated resistive heaters for efficient heating of the materials. By combining MEMS technology with thin-film deposition technology, thin-film fuel cells having microflow channels and full-integrated circuitry can be produced that will lower the operating temperature an will yield an order of magnitude greater power density than the currently known fuel cells.

  13. Solid polymer MEMS-based fuel cells

    DOE Patents [OSTI]

    Jankowski, Alan F. (Livermore, CA); Morse, Jeffrey D. (Pleasant Hill, CA)

    2008-04-22T23:59:59.000Z

    A micro-electro-mechanical systems (MEMS) based thin-film fuel cells for electrical power applications. The MEMS-based fuel cell may be of a solid oxide type (SOFC), a solid polymer type (SPFC), or a proton exchange membrane type (PEMFC), and each fuel cell basically consists of an anode and a cathode separated by an electrolyte layer. The electrolyte layer can consist of either a solid oxide or solid polymer material, or proton exchange membrane electrolyte materials may be used. Additionally catalyst layers can also separate the electrodes (cathode and anode) from the electrolyte. Gas manifolds are utilized to transport the fuel and oxidant to each cell and provide a path for exhaust gases. The electrical current generated from each cell is drawn away with an interconnect and support structure integrated with the gas manifold. The fuel cells utilize integrated resistive heaters for efficient heating of the materials. By combining MEMS technology with thin-film deposition technology, thin-film fuel cells having microflow channels and full-integrated circuitry can be produced that will lower the operating temperature an will yield an order of magnitude greater power density than the currently known fuel cells.

  14. Exploring Space to Help Mining MINAR: An analogue programme at Boulby Mine

    E-Print Network [OSTI]

    Strathclyde, University of

    mineral extraction. This program (MINAR ­ Mining and Analogue Research programme) is an international subsurface of the Earth. In the process of doing this, new insights will be gained in technology transfer

  15. Data Mining Ryan Benton

    E-Print Network [OSTI]

    Raghavan, Vijay

    Data Mining Ryan Benton Center for Advanced Computer Studies University of Louisiana at Lafayette in Databases (KDD) ! Data Mining Related Fields Research Issues Tasks ! Association Mining Problem;9 KDD vs. DATA MINING ! Synonyms (?) ! KDD More than just finding pattern Mining, dredging

  16. MEMS for Bio Applications Ian Papautsky, Ph.D.

    E-Print Network [OSTI]

    Baudoin, Geneviève

    to as BioMEMS or BioMicrosystems. In addition to many microfluidic devices, such as pumps, mixers, valves have been developed. Microfluidic devices and LOCs have generated interest in many application fields the SPIE Microfluidics, BioMEMS, and Medical Microsystems Conference and served on the organizing committee

  17. Pre-release plastic packaging of MEMS and IMEMS devices

    DOE Patents [OSTI]

    Peterson, Kenneth A. (Albuquerque, NM); Conley, William R. (Tijeras, NM)

    2002-01-01T23:59:59.000Z

    A method is disclosed for pre-release plastic packaging of MEMS and IMEMS devices. The method can include encapsulating the MEMS device in a transfer molded plastic package. Next, a perforation can be made in the package to provide access to the MEMS elements. The non-ablative material removal process can include wet etching, dry etching, mechanical machining, water jet cutting, and ultrasonic machining, or any combination thereof. Finally, the MEMS elements can be released by using either a wet etching or dry plasma etching process. The MEMS elements can be protected with a parylene protective coating. After releasing the MEMS elements, an anti-stiction coating can be applied. The perforating step can be applied to both sides of the device or package. A cover lid can be attached to the face of the package after releasing any MEMS elements. The cover lid can include a window for providing optical access. The method can be applied to any plastic packaged microelectronic device that requires access to the environment, including chemical, pressure, or temperature-sensitive microsensors; CCD chips, photocells, laser diodes, VCSEL's, and UV-EPROMS. The present method places the high-risk packaging steps ahead of the release of the fragile portions of the device. It also provides protection for the die in shipment between the molding house and the house that will release the MEMS elements and subsequently treat the surfaces.

  18. RF-MEMS capacitive switches with high reliability

    DOE Patents [OSTI]

    Goldsmith, Charles L.; Auciello, Orlando H.; Carlisle, John A.; Sampath, Suresh; Sumant, Anirudha V.; Carpick, Robert W.; Hwang, James; Mancini, Derrick C.; Gudeman, Chris

    2013-09-03T23:59:59.000Z

    A reliable long life RF-MEMS capacitive switch is provided with a dielectric layer comprising a "fast discharge diamond dielectric layer" and enabling rapid switch recovery, dielectric layer charging and discharging that is efficient and effective to enable RF-MEMS switch operation to greater than or equal to 100 billion cycles.

  19. Research Projects inResearch Projects in Microelectromechanical Systems (MEMS) andMicroelectromechanical Systems (MEMS) and

    E-Print Network [OSTI]

    Frechette, Luc G.

    : Microelectromechanical Systems ­ Micro Fuel Cells ­ Microturbines ­ Micro generators (vibration energy harvesting.Frechette@USherbrooke.ca http://www.eureka.gme.usherb.ca/MEMSLab/ #12;Theme: MicroturbinesTheme: Microturbines Project are developing MEMS-based microturbines that will allows the miniaturization of power-plants on a chip

  20. Precision Mining

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible forPortsmouth/Paducah ProjectPRE-AWARD ACCOUNTING SYSTEM SURVEYPrecision Mining Double

  1. A modular process for integrating thick polysilicon MEMS devices with sub-micron CMOS

    E-Print Network [OSTI]

    Afshari, Ehsan

    useful for advanced inertial MEMS products such as automotive airbag accelerometers where reduced cost

  2. ANU MLSS 2010: Data Mining

    E-Print Network [OSTI]

    Christen, Peter

    ANU MLSS 2010: Data Mining Part 1: Introduction, data mining challenges, and data issues for data mining Data Mining module outline Part 1: Very short introduction to data mining Data mining process Challenges in data mining Data cleaning, integration and pre-processing Part 2: Association rule mining Part

  3. Reliability Testing of Polysilicon For MEMs Devices

    SciTech Connect (OSTI)

    LaVan, D.A.; Buchheit, T.E.

    1999-04-05T23:59:59.000Z

    Mission critical applications of MEMS devices require knowledge of the distribution in their material properties and long-term reliability of the small-scale structures. This project reports on a new testing program at Sandia to quantify the strength distribution using samples that reflect the dimensions of critical MEMS components. The strength of polysilicon fabricated with Sandia's SUMMiT 4-layer process was successfully measured using samples with gage sections 2.5 {micro}m thick by 1.7 {micro}m wide and lengths of 15 and 25 {micro}m. These tensile specimens have a freely moving pivot on one end that anchors the sample to the silicon die and prevents off axis loading during testing. Each sample is loaded in uniaxial tension by pulling laterally with a flat tipped diamond in a computer-controlled Nanoindenter. The stress-strain curve is calculated using the specimen cross section and gage length dimensions verified by measuring against a standard in the SEM. The first 48 samples had a means strength of 2.24 {+-} 0.35 GPa. Fracture strength measurements grouped into three strength levels, which matched three failure modes observed in post mortem examinations. The seven samples in the highest strength group failed in the gage section (strength of 2.77 {+-} 0.04 GPa), the moderate strength group failed at the gage section fillet and the lowest strength group failed at a dimple in the hub. With this technique, multiple tests can be programmed at one time and performed without operator assistance at a rate of 20-30 per day allowing the collection of significant populations of data. Since the new test geometry has been proven, the project is moving to test the distributions seen from real geometric features typical to MEMS such as the effect of gage length, fracture toughness, bonding between layers, etch holes, dimples and shear of gear teeth.

  4. High fidelity frictional models for MEMS.

    SciTech Connect (OSTI)

    Carpick, Robert W. (University of Wisconsin, Madison, WI); Reedy, Earl David, Jr.; Bitsie, Fernando; de Boer, Maarten Pieter; Corwin, Alex David; Ashurst, William Robert (Auburn University, Auburn, AL); Jones, Reese E.; Subhash, Ghatu S. (Michigan Technological Institute, Houghton, MI); Street, Mark D. (University of Wisconsin, Madison, WI); Sumali, Anton Hartono; Antoun, Bonnie R.; Starr, Michael James; Redmond, James Michael; Flater, Erin E. (University of Wisconsin, Madison, WI)

    2004-10-01T23:59:59.000Z

    The primary goals of the present study are to: (1) determine how and why MEMS-scale friction differs from friction on the macro-scale, and (2) to begin to develop a capability to perform finite element simulations of MEMS materials and components that accurately predicts response in the presence of adhesion and friction. Regarding the first goal, a newly developed nanotractor actuator was used to measure friction between molecular monolayer-coated, polysilicon surfaces. Amontons law does indeed apply over a wide range of forces. However, at low loads, which are of relevance to MEMS, there is an important adhesive contribution to the normal load that cannot be neglected. More importantly, we found that at short sliding distances, the concept of a coefficient of friction is not relevant; rather, one must invoke the notion of 'pre-sliding tangential deflections' (PSTD). Results of a simple 2-D model suggests that PSTD is a cascade of small-scale slips with a roughly constant number of contacts equilibrating the applied normal load. Regarding the second goal, an Adhesion Model and a Junction Model have been implemented in PRESTO, Sandia's transient dynamics, finite element code to enable asperity-level simulations. The Junction Model includes a tangential shear traction that opposes the relative tangential motion of contacting surfaces. An atomic force microscope (AFM)-based method was used to measure nano-scale, single asperity friction forces as a function of normal force. This data is used to determine Junction Model parameters. An illustrative simulation demonstrates the use of the Junction Model in conjunction with a mesh generated directly from an atomic force microscope (AFM) image to directly predict frictional response of a sliding asperity. Also with regards to the second goal, grid-level, homogenized models were studied. One would like to perform a finite element analysis of a MEMS component assuming nominally flat surfaces and to include the effect of roughness in such an analysis by using a homogenized contact and friction models. AFM measurements were made to determine statistical information on polysilicon surfaces with different roughnesses, and this data was used as input to a homogenized, multi-asperity contact model (the classical Greenwood and Williamson model). Extensions of the Greenwood and Williamson model are also discussed: one incorporates the effect of adhesion while the other modifies the theory so that it applies to the case of relatively few contacting asperities.

  5. 05670_MEMS | netl.doe.gov

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) - Energy Innovation Portal Advanced Materialsj3Fabry-Perot MEMS

  6. Metal MEMS Devices | GE Global Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your HomeOverview and HistoryMEMS: Inside the Global Research

  7. Photonic MEMS for NIR in-situ

    SciTech Connect (OSTI)

    Bond, T C; Cole, G D; Goddard, L L; Behymer, E

    2007-07-03T23:59:59.000Z

    We report on a novel sensing technique combining photonics and microelectromechanical systems (MEMS) for the detection and monitoring of gas emissions for critical environmental, medical, and industrial applications. We discuss how MEMS-tunable vertical-cavity surface-emitting lasers (VCSELs) can be exploited for in-situ detection and NIR spectroscopy of several gases, such as O{sub 2}, N{sub 2}O, CO{sub x}, CH{sub 4}, HF, HCl, etc., with estimated sensitivities between 0.1 and 20 ppm on footprints {approx}10{sup -3} mm{sup 3}. The VCSELs can be electrostatically tuned with a continuous wavelength shift up to 20 nm, allowing for unambiguous NIR signature determination. Selective concentration analysis in heterogeneous gas compositions is enabled, thus paving the way to an integrated optical platform for multiplexed gas identification by bandgap and device engineering. We will discuss here, in particular, our efforts on the development of a 760 nm AlGaAs based tunable VCSEL for O{sub 2} detection.

  8. The Sandia MEMS passive shock sensor : FY07 maturation activities.

    SciTech Connect (OSTI)

    Houston, Jack E.; Blecke, Jill; Mitchell, John Anthony; Wittwer, Jonathan W.; Crowson, Douglas A.; Clemens, Rebecca C.; Walraven, Jeremy Allen; Epp, David S.; Baker, Michael Sean

    2008-08-01T23:59:59.000Z

    This report describes activities conducted in FY07 to mature the MEMS passive shock sensor. The first chapter of the report provides motivation and background on activities that are described in detail in later chapters. The second chapter discusses concepts that are important for integrating the MEMS passive shock sensor into a system. Following these two introductory chapters, the report details modeling and design efforts, packaging, failure analysis and testing and validation. At the end of FY07, the MEMS passive shock sensor was at TRL 4.

  9. Which ruby's mine?: Emily Dickinson's search for a meaningful existence.

    E-Print Network [OSTI]

    Lowrey, Robert Edward

    1964-01-01T23:59:59.000Z

    of their number, Emzzp &!ashburn, nad fa len ill with difzicult case of Lurg Eever, " and, that the head mistress y! is s Iyons had commended 51iss W. to . ~ she 'r] prayers, adding that she thought "they] had occasion to mizgle gratitude with , their] pe... OF ARTS August 1964 I. josb t E "j'h WHICH RUBY'S MINE?: EMILY DICKINSON'S SEARCH FOR A MEANINGFUL EXIS1ENCE A Thesis Robert Edward Lowrey Approved as to style and content by:. C irman of Committee) Head of De artment) (Mem er) (Member)k August...

  10. of Mining & Engineering

    E-Print Network [OSTI]

    Wong, Pak Kin

    & Illness in Mining (3 units) MNE 527 Geomechanics (4 units) MNE 547 Underground Construction Geomechanics

  11. anthracite mines mines: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  12. Rights and Duties of Mines and Mine Owners, General (Missouri)

    Broader source: Energy.gov [DOE]

    This legislation addresses general operational guidelines for mine owners regarding public notices, fees, land and mineral ownership, requirements for mining in certain municipalities, and mining...

  13. Superhydrophobic Surface Coatings for Microfluidics and MEMs.

    SciTech Connect (OSTI)

    Branson, Eric D.; Singh, Seema [Sandia National Laboratories, Livermore, CA] [Sandia National Laboratories, Livermore, CA; Houston, Jack E.; van Swol, Frank B.; Brinker, C. Jeffrey

    2006-11-01T23:59:59.000Z

    Low solid interfacial energy and fractally rough surface topography confer to Lotus plants superhydrophobic (SH) properties like high contact angles, rolling and bouncing of liquid droplets, and self-cleaning of particle contaminants. This project exploits the porous fractal structure of a novel, synthetic SH surface for aerosol collection, its self-cleaning properties for particle concentration, and its slippery nature 3 to enhance the performance of fluidic and MEMS devices. We propose to understand fundamentally the conditions needed to cause liquid droplets to roll rather than flow/slide on a surface and how this %22rolling transition%22 influences the boundary condition describing fluid flow in a pipe or micro-channel. Rolling of droplets is important for aerosol collection strategies because it allows trapped particles to be concentrated and transported in liquid droplets with no need for a pre-defined/micromachined fluidic architecture. The fluid/solid boundary condition is important because it governs flow resistance and rheology and establishes the fluid velocity profile. Although many research groups are exploring SH surfaces, our team is the first to unambiguously determine their effects on fluid flow and rheology. SH surfaces could impact all future SNL designs of collectors, fluidic devices, MEMS, and NEMS. Interfaced with inertial focusing aerosol collectors, SH surfaces would allow size-specific particle populations to be collected, concentrated, and transported to a fluidic interface without loss. In microfluidic systems, we expect to reduce the energy/power required to pump fluids and actuate MEMS. Plug-like (rather than parabolic) velocity profiles can greatly improve resolution of chip-based separations and enable unprecedented control of concentration profiles and residence times in fluidic-based micro-reactors. Patterned SH/hydrophilic channels could induce mixing in microchannels and enable development of microflow control elements. Acknowledgements This work was funded by Sandia National Laboratory's Laboratory Directed Research & Development program (LDRD). Some coating processes were conducted in the cleanroom facility located at the University of New Mexico's Center for High Technology Materials (CHTM). SEM images were performed at UNM's Center for Micro-Engineering on equipment funded by a NSF New Mexico EPSCoR grant. 4

  14. Detection of contaminants using a MEMS FAIMS sensor

    E-Print Network [OSTI]

    Carr, Kristin (Kristin Malia)

    2005-01-01T23:59:59.000Z

    Detecting the presence of contaminants in water is a critical mission, but thorough testing often requires extensive time at a remote facility. A MEMS implementation of a FAIMS (High-Field Asymmetric-Waveform Ion Mobility ...

  15. Characterization and modeling of polysilicon MEMS chemical-mechanical polishing

    E-Print Network [OSTI]

    Tang, Brian D. (Brian David), 1980-

    2004-01-01T23:59:59.000Z

    Heavily used in the manufacture of integrated circuits, chemical-mechanical polishing (CMP) is becoming an enabling technology for microelectromechanical systems (MEMS). To reliably use CMP in the manufacturing process, ...

  16. Reduced-order modeling of MEMS using modal basis functions

    E-Print Network [OSTI]

    Varghese, Mathew, 1973-

    2002-01-01T23:59:59.000Z

    The field of MEMS has matured significantly over the last two decades increasing in both complexity and level of integration. To keep up with the demands placed by these changes requires the development of computer-aided ...

  17. Magnetic machines and power electronics for power MEMS applications

    E-Print Network [OSTI]

    Das, Sauparna, 1979-

    2005-01-01T23:59:59.000Z

    This thesis presents the modeling, design, and characterization of microfabricated, surface-wound, permanent-magnet (PM) generators, and their power electronics, for use in Watt-level Power MEMS applications such as a ...

  18. Modeling and design of a MEMS piezoelectric vibration energy harvester

    E-Print Network [OSTI]

    Du Toit, Noël Eduard

    2005-01-01T23:59:59.000Z

    The modeling and design of MEMS-scale piezoelectric-based vibration energy harvesters (MPVEH) are presented. The work is motivated by the need for pervasive and limitless power for wireless sensor nodes that have application ...

  19. Novel rf mems tunable filters with adjustable spurious suppression 

    E-Print Network [OSTI]

    Sekar, Vikram

    2009-05-15T23:59:59.000Z

    This thesis presents the theory and design of fixed and Radio Frequency (RF) Microelectromechanical Systems (MEMS) -based tunable microwave filters for RF and microwave applications. The methodology for the design of coupled resonator filters...

  20. Novel rf mems tunable filters with adjustable spurious suppression

    E-Print Network [OSTI]

    Sekar, Vikram

    2009-05-15T23:59:59.000Z

    This thesis presents the theory and design of fixed and Radio Frequency (RF) Microelectromechanical Systems (MEMS) -based tunable microwave filters for RF and microwave applications. The methodology for the design of coupled resonator filters...

  1. MemTable : contextual memory in group workspaces

    E-Print Network [OSTI]

    Hunter, Seth E

    2009-01-01T23:59:59.000Z

    This thesis presents the design and implementation of MemTable, an interactive touch table that supports co-located group meetings by capturing both digital and physical interactions in its memory. The goal of the project ...

  2. JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 16, NO. 5, OCTOBER 2007 1219 Design and Operation of a MEMS-Based Material

    E-Print Network [OSTI]

    Espinosa, Horacio D.

    integrated with RF microelectromechanical systems (MEMS) capacitors for tuning the resonant frequency at low dc voltages. Index Terms--Microelectromechanical system (MEMS), microstrip an- tennas, microwave, reconfigurable architectures. I. INTRODUCTION Microelectromechanical systems (MEMS) and the application

  3. Mechanics and tribology of MEMS materials.

    SciTech Connect (OSTI)

    Prasad, Somuri V.; Dugger, Michael Thomas; Boyce, Brad Lee; Buchheit, Thomas Edward

    2004-04-01T23:59:59.000Z

    Micromachines have the potential to significantly impact future weapon component designs as well as other defense, industrial, and consumer product applications. For both electroplated (LIGA) and surface micromachined (SMM) structural elements, the influence of processing on structure, and the resultant effects on material properties are not well understood. The behavior of dynamic interfaces in present as-fabricated microsystem materials is inadequate for most applications and the fundamental relationships between processing conditions and tribological behavior in these systems are not clearly defined. We intend to develop a basic understanding of deformation, fracture, and surface interactions responsible for friction and wear of microelectromechanical system (MEMS) materials. This will enable needed design flexibility for these devices, as well as strengthen our understanding of material behavior at the nanoscale. The goal of this project is to develop new capabilities for sub-microscale mechanical and tribological measurements, and to exercise these capabilities to investigate material behavior at this size scale.

  4. Theory on Measuring Orientation with MEMS Accelerometers in a Centrifuge

    E-Print Network [OSTI]

    Beemer, Ryan D.; Murali, Madhuri; Biscontin, Giovanna; Aubeny, Charles

    2015-03-21T23:59:59.000Z

    search of the American Society of Civil Engineers Library for “MEMS” yields 641 results (at the time of writing). One common type of MEMS sensor is the accelerometer. Their initial growth was directly due to the automotive industry. They replaced... , 51(4), 100–109. Silicon Design Inc. (2013). “Model 2012.” Kirkland, WA. Spangler, L. “Chip”, and Kemp, C. J. (1996). “ISAAC: integrated silicon automotive accelerometer.” Sensors and Actuators A: Physical, 54(1-3), 523–529. Stringer, M., Heron, C...

  5. LEARNING OUTCOMES EVALUATION Mining Engineering

    E-Print Network [OSTI]

    Missouri-Rolla, University of

    and mineral processing for comprehensive mine design, extraction and mineral beneficiation. Understand geomechanics, geometrics and computer-aided mine design, and optimization of flow processes for designing mine

  6. Mercury Methylation in Mine Wastes Collected from Abandoned Mercury Mines in the USA

    SciTech Connect (OSTI)

    Gray, John E. (U.S. Geological Survey); Hines, Mark E. (Massachusetts, Univ Of); Biester, Harald (Heidelberg College); Lasorsa, Brenda K. (BATTELLE (PACIFIC NW LAB))

    2003-05-01T23:59:59.000Z

    Mercury mines contain highly elevated Hg contents, but more problematic environmentally are elemental Hg and soluble Hg salts produced during ore retorting that remain in wastes at mine sites. Under certain conditions, these inorganic Hg compounds convert to bioavailable, highly toxic organic Hg forms. Speciation and transformation of Hg was studied in wastes collected from abandoned Hg mines at McDermitt, NV, and Terlingua, TX, which are moderate size on an international scale and produced about 10,000 and 5,000 t of elemental Hg, respectively. In waste samples, we measured total Hg and methyl-Hg contents, identified various Hg compounds using Hg-thermo-desorption pyrolysis, and determined rates of Hg methylation and methyl-Hg demethylation using isotopic-tracer methods. Pyrolysis analysis of mine wastes showed variable amounts of cinnabar, metacinnabar, Hg salts, elemental Hg, and elemental Hg sorbed onto particulates such as clay and Fe-oxides. Mine wastes with the highest methyl-Hg contents correspond to those with elemental Hg and particulate-sorbed elemental Hg, and also produced the highest laboratory-estimated potential Hg methylation rates, as much as 4.8%/day. Samples containing dominantly cinnabar showed little or no Hg methylation. Mine wastes with high methyl-Hg contents generally showed low methyl-Hg demethylation, suggesting that Hg methylation was dominant. Both mines are located in semiarid climates, and during this study, streambeds below the mines were dry. Total Hg contents in stream sediment collected below the mines show significant dilution, and methyl-Hg contents were typically below the limit of determination. Methylation of Hg downstream from Hg mines is probably lower in arid climates due to lack of mine-water runoff and lower microbial activity. The correspondence of mine wastes containing elemental Hg and high methyl-Hg contents suggests that Hg0 oxidizes to Hg2+, which is subsequently bioavailable for microbial Hg methylation.

  7. MEMS Reliability: Infrastructure, Test Structures, Experiments, and Failure Modes

    SciTech Connect (OSTI)

    TANNER,DANELLE M.; SMITH,NORMAN F.; IRWIN,LLOYD W.; EATON,WILLIAM P.; HELGESEN,KAREN SUE; CLEMENT,J. JOSEPH; MILLER,WILLIAM M.; MILLER,SAMUEL L.; DUGGER,MICHAEL T.; WALRAVEN,JEREMY A.; PETERSON,KENNETH A.

    2000-01-01T23:59:59.000Z

    The burgeoning new technology of Micro-Electro-Mechanical Systems (MEMS) shows great promise in the weapons arena. We can now conceive of micro-gyros, micro-surety systems, and micro-navigators that are extremely small and inexpensive. Do we want to use this new technology in critical applications such as nuclear weapons? This question drove us to understand the reliability and failure mechanisms of silicon surface-micromachined MEMS. Development of a testing infrastructure was a crucial step to perform reliability experiments on MEMS devices and will be reported here. In addition, reliability test structures have been designed and characterized. Many experiments were performed to investigate failure modes and specifically those in different environments (humidity, temperature, shock, vibration, and storage). A predictive reliability model for wear of rubbing surfaces in microengines was developed. The root causes of failure for operating and non-operating MEMS are discussed. The major failure mechanism for operating MEMS was wear of the polysilicon rubbing surfaces. Reliability design rules for future MEMS devices are established.

  8. MEMS packaging with etching and thinning of lid wafer to form lids and expose device wafer bond pads

    DOE Patents [OSTI]

    Chanchani, Rajen; Nordquist, Christopher; Olsson, Roy H; Peterson, Tracy C; Shul, Randy J; Ahlers, Catalina; Plut, Thomas A; Patrizi, Gary A

    2013-12-03T23:59:59.000Z

    In wafer-level packaging of microelectromechanical (MEMS) devices a lid wafer is bonded to a MEMS wafer in a predermined aligned relationship. Portions of the lid wafer are removed to separate the lid wafer into lid portions that respectively correspond in alignment with MEMS devices on the MEMS wafer, and to expose areas of the MEMS wafer that respectively contain sets of bond pads respectively coupled to the MEMS devices.

  9. Integrated optical MEMS using through-wafer vias and bump-bonding.

    SciTech Connect (OSTI)

    McCormick, Frederick Bossert; Frederick, Scott K.

    2008-01-01T23:59:59.000Z

    This LDRD began as a three year program to integrate through-wafer vias, micro-mirrors and control electronics with high-voltage capability to yield a 64 by 64 array of individually controllable micro-mirrors on 125 or 250 micron pitch with piston, tip and tilt movement. The effort was a mix of R&D and application. Care was taken to create SUMMiT{trademark} (Sandia's ultraplanar, multilevel MEMS technology) compatible via and mirror processes, and the ultimate goal was to mate this MEMS fabrication product to a complementary metal-oxide semiconductor (CMOS) electronics substrate. Significant progress was made on the via and mirror fabrication and design, the attach process development as well as the electronics high voltage (30 volt) and control designs. After approximately 22 months, the program was ready to proceed with fabrication and integration of the electronics, final mirror array, and through wafer vias to create a high resolution OMEMS array with individual mirror electronic control. At this point, however, mission alignment and budget constraints reduced the last year program funding and redirected the program to help support the through-silicon via work in the Hyper-Temporal Sensors (HTS) Grand Challenge (GC) LDRD. Several months of investigation and discussion with the HTS team resulted in a revised plan for the remaining 10 months of the program. We planned to build a capability in finer-pitched via fabrication on thinned substrates along with metallization schemes and bonding techniques for very large arrays of high density interconnects (up to 2000 x 2000 vias). Through this program, Sandia was able to build capability in several different conductive through wafer via processes using internal and external resources, MEMS mirror design and fabrication, various bonding techniques for arrayed substrates, and arrayed electronics control design with high voltage capability.

  10. ITP Mining: Exploration and Mining Technology Roadmap

    Broader source: Energy.gov (indexed) [DOE]

    David Bartley Connie Holmes BCS, Incorporated National Mining Association Kenneth G. Bennett David Hyman Caterpillar Inc. National Energy Technology Laboratory Jeanette Berry...

  11. JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 7, NO. 4, DECEMBER 1998 395 Development of a MEMS Microvalve

    E-Print Network [OSTI]

    and microelectromechanical systems MEMS to form electrical and/or mechanical components. In this paper, a nanoindentation.1063/1.1898449 I. INTRODUCTION Microelectromechanical systems MEMS refer to de- vices that have a characteristic

  12. A MEMS Thin Film AlN Supercritical Carbon Dioxide Valve

    E-Print Network [OSTI]

    Chen, Ya-Mei

    2011-01-01T23:59:59.000Z

    and T. K. Tang, “MEMS micro-valve for space applications”,of the fabricated thermal MEMS valve by Kim et al. [An electrostatically actuated gas valve with an s-shape film

  13. Design, fabrication and testing of a lateral self-cleaning MEMS switch

    E-Print Network [OSTI]

    Shi, Yong, 1965-

    2004-01-01T23:59:59.000Z

    A lateral contact MEMS switch has been developed to address the need for a long life cycle, low contact resistance RF switch. At the present time, there is no commercial MEMS switch that meets all the requirements. The ...

  14. Data Mining: Opportunities and Challenges

    E-Print Network [OSTI]

    Wu, Xindong

    1 Data Mining: Opportunities and Challenges Xindong Wu University of Vermont, USA; Hefei University Systems 2004 ...... #12;3 Outline 1.1. Data Mining OpportunitiesData Mining Opportunities Major Conferences and Journals in Data Mining Main Topics in Data Mining Some Research Directions in Data Mining 2

  15. Mining Regulations (Missouri)

    Broader source: Energy.gov [DOE]

    This legislation applies to all mines in this state engaged in the mining or extraction of minerals for commercial purposes, except barite, marble, limestone, and sand and gravel, or the...

  16. Data Warehousing and Data Mining Conference, January 25, 1999, Singapore Data Mining:Data Mining

    E-Print Network [OSTI]

    Wu, Xindong

    Data Warehousing and Data Mining Conference, January 25, 1999, Singapore 1 Welcome Data Mining:Data Mining: Updates in TechnologiesUpdates in Technologies Xindong Wu Dept of Math and Computer Science Colorado School of Mines Golden, Colorado 80401, USA Email: xwu@ mines.edu Home Page: http://kais.mines

  17. JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 18, NO. 1, FEBRUARY 2009 103 Indium Phosphide MEMS Cantilever Resonator

    E-Print Network [OSTI]

    Rubloff, Gary W.

    JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 18, NO. 1, FEBRUARY 2009 103 Indium Phosphide MEMS, Subramaniam Kanakaraju, Neil Goldsman, and Reza Ghodssi Abstract--We report a microelectromechanical system, microelectromechanical system (MEMS) cantilevers, pentacene, III­V MEMS. I. INTRODUCTION THE NEED to monitor

  18. Designing Computer Systems With MEMS-based Storage Steven W. Schlosser, John Linwood Grin,

    E-Print Network [OSTI]

    architects. An exciting new storage technology based on microelectromechanical systems (MEMS) is poised; Keywords: microelectromechanical systems (MEMS), storage systems, memory hier- archy #12; $1/GB $10/GB $100 [CBF + 00, Bro98]. Based on microelectromechanical systems (MEMS), this non- volatile storage tech

  19. Workload-Based Configuration of MEMS-Based Storage Devices for Mobile Systems

    E-Print Network [OSTI]

    Miller, Ethan L.

    Data layout, MEMS, Probe-Based Storage 1. INTRODUCTION Users of battery-powered mobile systems requireWorkload-Based Configuration of MEMS-Based Storage Devices for Mobile Systems Mohammed G. Khatib.h.hartel@utwente.nl ABSTRACT Because of its small form factor, high capacity, and expected low cost, MEMS-based storage

  20. Identification of Residual Stress State in an RF-MEMS Device

    E-Print Network [OSTI]

    Espinosa, Horacio D.

    of wafer level tests. The membrane is part of an RF MEMS Switch man- ufactured by Raytheon Systems Co) and 3D numerical simulations. THE RAYTHEON'S RF MEMS SWITCH The RF MEMS switch technology developed by Raytheon Systems Co. provides advantageous characteristics for communication circuits by virtue of its

  1. A Novel MEMS LTCC Switch Matrix Bahram Yassini, Savio Choi, Andre Zybura, Ming Yu,

    E-Print Network [OSTI]

    Yu, Ming

    A Novel MEMS LTCC Switch Matrix Bahram Yassini, Savio Choi, Andre Zybura, Ming Yu, Robert. E planar 4x4 switch matrix using microelectromechanical system (MEMS) switches and Low Temperature Cofired Ceramic (LTCC) substrate is presented for the first time. Together a 9-layer LTCC substrate and 32 MEMS

  2. Zone-Based Shortest Positioning Time First Scheduling for MEMS-Based Storage Devices

    E-Print Network [OSTI]

    Miller, Ethan L.

    , and power consumption an order of magnitude lower. Previous re- search has examined data layout and request drives, storage densities 10 times greater, and power consumption an order of magnitude lower. MEMS other using MEMS actuators, each read/write head can access a region of the surface. MEMS- based storage

  3. of Mining & Engineering

    E-Print Network [OSTI]

    Wong, Pak Kin

    .621.8330 Engr-mining@email.arizona.edu ONLINE GRADUATE CERTIFICATE PROGRAM 15 UNITS YOUR CAREER GEOMECHANICS #12;GEOMECHANICS Department of Mining & Geological Engineering www.mge.arizona.edu Contact the MGE Department for more information: ENGR-mining@email.arizona.edu REQUIRED COURSES (12 units) MNE 527 Geomechanics (3

  4. Thin Silicon MEMS Contact-Stress Sensor

    SciTech Connect (OSTI)

    Kotovsky, J; Tooker, A; Horsley, D A

    2009-12-07T23:59:59.000Z

    This work offers the first, thin, MEMS contact-stress (CS) sensor capable of accurate in situ measruement of time-varying, contact-stress between two solid interfaces (e.g. in vivo cartilage contact-stress and body armor dynamic loading). This CS sensor is a silicon-based device with a load sensitive diaphragm. The diaphragm is doped to create piezoresistors arranged in a full Wheatstone bridge. The sensor is similar in performance to established silicon pressure sensors, but it is reliably produced to a thickness of 65 {micro}m. Unlike commercial devices or other research efforts, this CS sensor, including packaging, is extremely thin (< 150 {micro}m fully packaged) so that it can be unobtrusively placed between contacting structures. It is built from elastic, well-characterized materials, providing accurate and high-speed (50+ kHz) measurements over a potential embedded lifetime of decades. This work explored sensor designs for an interface load range of 0-2 MPa; however, the CS sensor has a flexible design architecture to measure a wide variety of interface load ranges.

  5. Sentiment Analysis and Opinion Mining Bibliography

    E-Print Network [OSTI]

    Illinois at Chicago, University of

    of Conference of the European Chapter of the Association for Computational Linguistics (EACL-06). 2006. 6 power of product features by mining consumer reviews. in Proceedings of the ACM SIGKDD Conference? in Proceedings of the International Conference on Computational Linguistics (COLING-2010). 2010. 14. Banea

  6. WWW-2005 Tutorial Web Content Mining

    E-Print Network [OSTI]

    Hu, Wen-Chen

    of surface Web and deep Web. Surface Web: pages that can be browsed using a browser. Deep Web: databasesWWW-2005 Tutorial Web Content Mining Bing Liu Department of Computer Science University of Illinois at Chicago (UIC) liub@cs.uic.edu http://www.cs.uic.edu/~liub The 14th International World Wide Web Conference

  7. Predicting fracture in micron-scale polycrystalline silicon MEMS structures.

    SciTech Connect (OSTI)

    Hazra, Siddharth S. (Carnegie Mellon University, Pittsburgh, PA); de Boer, Maarten Pieter (Carnegie Mellon University, Pittsburgh, PA); Boyce, Brad Lee; Ohlhausen, James Anthony; Foulk, James W., III; Reedy, Earl David, Jr.

    2010-09-01T23:59:59.000Z

    Designing reliable MEMS structures presents numerous challenges. Polycrystalline silicon fractures in a brittle manner with considerable variability in measured strength. Furthermore, it is not clear how to use a measured tensile strength distribution to predict the strength of a complex MEMS structure. To address such issues, two recently developed high throughput MEMS tensile test techniques have been used to measure strength distribution tails. The measured tensile strength distributions enable the definition of a threshold strength as well as an inferred maximum flaw size. The nature of strength-controlling flaws has been identified and sources of the observed variation in strength investigated. A double edge-notched specimen geometry was also tested to study the effect of a severe, micron-scale stress concentration on the measured strength distribution. Strength-based, Weibull-based, and fracture mechanics-based failure analyses were performed and compared with the experimental results.

  8. International Journal of Data Warehousing and Mining, 8(4), 1-21, October-December 2012 1 Copyright 2012, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited.

    E-Print Network [OSTI]

    Ezeife, Christie

    of IGI Global is prohibited. Keywords: Non-DeterministicFiniteAutomata(NFA),ObjectOrientedMining,WebContentMining, WebDataIntegration,Wrappers INTRODUCTION World Wide Web (WWW) is growing expo- nentially over the years and web documents constitute some of the largest repositories of information (Kosala & Blockeel

  9. Acoustic resonance for nonmetallic mine detection

    SciTech Connect (OSTI)

    Kercel, S.W.

    1998-04-01T23:59:59.000Z

    The feasibility of acoustic resonance for detection of plastic mines was investigated by researchers at the Oak Ridge National Laboratory`s Instrumentation and Controls Division under an internally funded program. The data reported in this paper suggest that acoustic resonance is not a practical method for mine detection. Representative small plastic anti-personnel mines were tested, and were found to not exhibit detectable acoustic resonances. Also, non-metal objects known to have strong acoustic resonances were tested with a variety of excitation techniques, and no practical non-contact method of exciting a consistently detectable resonance in a buried object was discovered. Some of the experimental data developed in this work may be useful to other researchers seeking a method to detect buried plastic mines. A number of excitation methods and their pitfalls are discussed. Excitation methods that were investigated include swept acoustic, chopped acoustic, wavelet acoustic, and mechanical shaking. Under very contrived conditions, a weak response that could be attributed to acoustic resonance was observed, but it does not appear to be practical as a mine detection feature. Transfer properties of soil were investigated. Impulse responses of several representative plastic mines were investigated. Acoustic leakage coupling, and its implications as a disruptive mechanism were investigated.

  10. MINING CLAIM PROCEDURES NEVADA BUREAU OF MINES AND GEOLOGY

    E-Print Network [OSTI]

    Tingley, Joseph V.

    UNIVERSITY OF NEVADA RENO MINING CLAIM PROCEDURES NEVADA BUREAU OF MINES AND GEOLOGY Mackay School of Mines Fifth Edition FOR NEVADA PROSPECTORS AND MINERS by Keith G. Papke and David A. Davis #12;1 MINING CLAIM PROCEDURES NEVADA BUREAU OF MINES AND GEOLOGY Fifth Edition FOR NEVADA PROSPECTORS AND MINERS

  11. Data Mining: Concepts and Techniques

    E-Print Network [OSTI]

    Geldenhuys, Jaco

    11 Data Mining: Concepts and Techniques (3rd ed.) -- Chapter 1 -- Jiawei Han, Micheline Kamber. All rights reserved. #12;July 29, 2013 Data Mining: Concepts and Techniques 2July 29, 2013 Data Mining: Concepts and Techniques 2 #12;July 29, 2013 Data Mining: Concepts and Techniques 3July 29, 2013 Data Mining

  12. Hidden Challenges to MEMS Commercialization: Design Realization and Reliability Assurance

    SciTech Connect (OSTI)

    McWhorter, P.J.; Miller, S.L.; Miller, W.M.; Rodger, M.S.; Yarberry, V.R.

    1999-01-20T23:59:59.000Z

    The successful commercialization of MicroElectroMechanical Systems (MEMS) is an essential prerequisite for their implementation in many critical government applications. Several unique challenges must be overcome to achieve this widespread commercialization. Challenges associated with design realization and reliability assurance are discussed, along with approaches taken by Sandia to successfully overcome these challenges.

  13. Columbia University http://www.columbia.edu/~mem4/

    E-Print Network [OSTI]

    Mauel, Michael E.

    Mike Mauel Columbia University http://www.columbia.edu/~mem4/ National Undergraduate Fusion plant · Columbia University's plasma physics experiments 6Friday, June 5, 2009 #12;Forces of Nature, 2009 100-300 s after the "Big-Bang": The Age of Fusion · At 100 sec, the universe cools to 1

  14. Columbia University http://www.columbia.edu/~mem4/

    E-Print Network [OSTI]

    Mauel, Michael E.

    Mike Mauel Columbia University http://www.columbia.edu/~mem4/ United States Coast Guard Academy 1 of a power plant · Columbia University's plasma physics experiments 2Tuesday, March 1, 2011 #12;Energy from, the universe cools to 1,000,000,000° · Protons and neutrons fuse to Deuterium (heavy hydrogen).The whole

  15. Columbia University http://www.columbia.edu/~mem4/

    E-Print Network [OSTI]

    Mauel, Michael E.

    Mike Mauel Columbia University http://www.columbia.edu/~mem4/ National Undergraduate Fusion at the scale of a power plant · Columbia University's plasma physics experiments 2Monday, June 6, 2011 #12 Fellowship Program 6 June 2011 The slides for this talk are online at: http://www.apam.columbia

  16. Diamond and Polycrystalline Diamond for MEMS Applications: Simulations and Experiments

    E-Print Network [OSTI]

    Çagin, Tahir

    Diamond and Polycrystalline Diamond for MEMS Applications: Simulations and Experiments Tahir C¸ a on Silicon and polycrystalline diamond show that this rapid wear is caused by a variety of factors, related processes on diamond surfaces. We studied the atomic friction of diamond (100)­surface employing an extended

  17. CHALLENGES IN DEVELOPMENT AND OPERATION OF MEMS MICROBIAL FUEL CELLS

    E-Print Network [OSTI]

    Steckl, Andrew J.

    CHALLENGES IN DEVELOPMENT AND OPERATION OF MEMS MICROBIAL FUEL CELLS A. Fraiwan1 , S. Sundermier1 Microbial Fuel Cells, Micro-sized, Power Density, Limiting Factors INTRODUCTION Microbial fuel cells (MFCs fuel cells (MFCs) have been a major focus for renewable energy production. With the successful

  18. A MICROFLUIDIC-ELECTRIC PACKAGE FOR POWER MEMS GENERATORS

    E-Print Network [OSTI]

    induction turbine-generator, and demonstrated a maximum output power of 192µW under driven excitation [1]. Holmes et al. have integrated a 7.5mm diameter permanent-magnet generator, an axial-flow polymer turbineA MICROFLUIDIC-ELECTRIC PACKAGE FOR POWER MEMS GENERATORS Florian Herrault, Chang-Hyeon Ji, Seong

  19. Noel C. MacDonald Fred Kavli Chair for MEMS

    E-Print Network [OSTI]

    California at Santa Barbara, University of

    Micro-mirror Array Ti/Au -Bonding Titanium Waveguide/relay & Wafer ­scale package Introduction · Ti Packaging #12;UCSB 3D Ti MEMS · Through- etch titanium wafer · Deposit gold on mating surfaces · Bond Wafers be processed using power metallurgy. ·Ti can be joined by fusion welding, brazing, adhesives, diffusion bonding

  20. A CAPACITIVELY BASED MEMS AFFINITY GLUCOSE SENSOR Xian Huang1*

    E-Print Network [OSTI]

    Lin, Qiao

    sensors, based on MEMS technology, allow low-cost non-invasive or minimally-invasive glucose monitoring on a magnetically actuated cantilever whose vibration was detected optically, represented our initial effort towards the feasibility for stable and potentially implantable CGM. DEVICE DESIGN AND FABRICATION The device consists

  1. ITP Mining: Mining Industry of the Future Mineral Processing...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of the Future Mineral Processing Technology Roadmap ITP Mining: Mining Industry of the Future Mineral Processing Technology Roadmap mptroadmap.pdf More Documents & Publications ITP...

  2. Labor and Safety: Mines and Mining Safety (Indiana)

    Broader source: Energy.gov [DOE]

    This section contains labor regulations pertaining specifically to coal mine workers. The law establishes the Indiana Mining Board. The Board's duties include: collecting and distributing...

  3. Coal Mining Regulations (Kentucky)

    Broader source: Energy.gov [DOE]

    Kentucky Administrative Regulation Title 405 chapters 1, 2, 3, 5, 7, 8, 10, 12, 16, 18 and 20 establish the laws governing coal mining in the state.

  4. Coal Mining (Iowa)

    Broader source: Energy.gov [DOE]

    These sections describe procedures for coal exploration and extraction, as well as permitting requirements relating to surface and underground coal mining. These sections also address land...

  5. Interstate Mining Compact (Maryland)

    Broader source: Energy.gov [DOE]

    This legislation authorizes the state's entrance into the Interstate Mining Compact, a multi-state governmental agency / organization that represents the natural resource and related environmental...

  6. Coal Mining Tax Credit (Arkansas)

    Broader source: Energy.gov [DOE]

    The Coal Mining Tax Credit provides an income or insurance premium tax credit of $2.00 per ton of coal mined, produced or extracted on each ton of coal mined in Arkansas in a tax year. An...

  7. Data Mining Tools Irfan Altas

    E-Print Network [OSTI]

    Turlach, Berwin A.

    Data Mining Tools Irfan Altas School of Information Studies, Charles Sturt University Wagga Wagga discuss several scalable and parallel discovery and predictive data mining tools. They successfully Data mining tools, thin plate splines, BMARS, revolver, regression, smoothing, addi­ tive models

  8. Coal Mine Safety Act (Virginia)

    Broader source: Energy.gov [DOE]

    This Act is the primary legislation pertaining to coal mine safety in Virginia. It contains information on safety rules, safety standards and required certifications for mine workers, prohibited...

  9. PRB mines mature

    SciTech Connect (OSTI)

    Buchsbaum, L.

    2007-08-15T23:59:59.000Z

    Already seeing the results of reclamation efforts, America's largest surface mines advance as engineers prepare for the future. 30 years after the signing of the Surface Mining Control and Reclamation Act by Jimmy Carter, western strip mines in the USA, especially in the Powder River Basin, are producing more coal than ever. The article describes the construction and installation of a $38.5 million near-pit crusher and overland belt conveyor system at Foundation Coal West's (FCW) Belle Ayr surface mine in Wyoming, one of the earliest PRB mines. It goes on to describe the development by Rio Tinto of an elk conservatory, the Rochelle Hill Conservation Easement, on reclaimed land at Jacobs Ranch, adjacent to the Rochelle Hills. 4 photos.

  10. Efficient Mining of Indirect Associations Using HI-Mine

    E-Print Network [OSTI]

    An, Aijun

    Efficient Mining of Indirect Associations Using HI-Mine Qian Wan and Aijun An Department. Discovering association rules is one of the important tasks in data mining. While most of the existing algorithms are developed for efficient mining of frequent patterns, it has been noted recently that some

  11. Recent Developments in Mems-Based Micro Fuel Cells

    E-Print Network [OSTI]

    Pichonat, T

    2007-01-01T23:59:59.000Z

    Micro fuel cells ($\\mu$-FC) represent promising power sources for portable applications. Today, one of the technological ways to make $\\mu$-FC is to have recourse to standard microfabrication techniques used in the fabrication of micro electromechanical systems (MEMS). This paper shows an overview on the applications of MEMS techniques on miniature FC by presenting several solutions developed throughout the world. It also describes the latest developments of a new porous silicon-based miniature fuel cell. Using a silane grafted on an inorganic porous media as the proton-exchange membrane instead of a common ionomer such as Nafion, the fuel cell achieved a maximum power density of 58 mW cm-2 at room temperature with hydrogen as fuel.

  12. Damage of MEMS thermal actuators heated by laser irradiation.

    SciTech Connect (OSTI)

    Walraven, Jeremy Allen; Klody, Kelly Anne; Sackos, John T.; Phinney, Leslie Mary

    2004-11-01T23:59:59.000Z

    Optical actuation of microelectromechanical systems (MEMS) is advantageous for applications for which electrical isolation is desired. Thirty-two polycrystalline silicon opto-thermal actuators, optically-powered MEMS thermal actuators, were designed, fabricated, and tested. The design of the opto-thermal actuators consists of a target for laser illumination suspended between angled legs that expand when heated, providing the displacement and force output. While the amount of displacement observed for the opto-thermal actuators was fairly uniform for the actuators, the amount of damage resulting from the laser heating ranged from essentially no damage to significant amounts of damage on the target. The likelihood of damage depended on the target design with two of the four target designs being more susceptible to damage. Failure analysis of damaged targets revealed the extent and depth of the damage.

  13. Damage of MEMS thermal actuators heated by laser irradiation.

    SciTech Connect (OSTI)

    Walraven, Jeremy Allen; Klody, Kelly Anne; Sackos, John T.; Phinney, Leslie Mary

    2005-01-01T23:59:59.000Z

    Optical actuation of microelectromechanical systems (MEMS) is advantageous for applications for which electrical isolation is desired. Thirty-two polycrystalline silicon opto-thermal actuators, optically-powered MEMS thermal actuators, were designed, fabricated, and tested. The design of the opto-thermal actuators consists of a target for laser illumination suspended between angled legs that expand when heated, providing the displacement and force output. While the amount of displacement observed for the opto-thermal actuators was fairly uniform for the actuators, the amount of damage resulting from the laser heating ranged from essentially no damage to significant amounts of damage on the target. The likelihood of damage depended on the target design with two of the four target designs being more susceptible to damage. Failure analysis of damaged targets revealed the extent and depth of the damage.

  14. Piston-Driven Fluid Ejectors In Silicon Mems

    DOE Patents [OSTI]

    Galambos, Paul C. (Albuquerque, NM); Benavides, Gilbert L. (Los Ranchos, NM); Jokiel, Jr., Bernhard (Albuquerque, NM); Jakubczak II, Jerome F. (Rio Rancho, NM)

    2005-05-03T23:59:59.000Z

    A surface-micromachined fluid-ejection apparatus is disclosed which utilizes a piston to provide for the ejection of jets or drops of a fluid (e.g. for ink-jet printing). The piston, which is located at least partially inside a fluid reservoir, is moveable into a cylindrical fluid-ejection chamber connected to the reservoir by a microelectromechanical (MEM) actuator which is located outside the reservoir. In this way, the reservoir and fluid-ejection chamber can be maintained as electric-field-free regions thereby allowing the apparatus to be used with fluids that are electrically conductive or which may react or break down in the presence of a high electric field. The MEM actuator can comprise either an electrostatic actuator or a thermal actuator.

  15. Solar for Mining Hugh Rudnick

    E-Print Network [OSTI]

    Catholic University of Chile (Universidad Católica de Chile)

    Solar for Mining Hugh Rudnick Professor Pontificia Universidad Católica de Chile #12;Solar Energy in Mining · Solar energy is becoming affordable · Attractive potential use for mining purposes · Must solve the storage requirement to increase its participation worldwide #12;Solar Energy in Mining · Electrical Energy

  16. Research at Mines Fiscal Year

    E-Print Network [OSTI]

    Matlock, De Moor, Speer #12;New Initiatives · Unconventional Oil & gas, Fracking (Santi) · Mines NREL

  17. Columbia University http://www.columbia.edu/~mem4/

    E-Print Network [OSTI]

    Mauel, Michael E.

    Mike Mauel Columbia University http://www.columbia.edu/~mem4/ and Jefferson Science Fellow EEB slow! #12;100-300 s after the "Big-Bang": The Age of Fusion · At 100 sec, the universe cools to 1,000,000,000° · Protons and neutrons fuse to Deuterium (heavy hydrogen).The whole universe is a "burning plasma"! · D + D

  18. Friction of different monolayer lubricants in MEMs interfaces.

    SciTech Connect (OSTI)

    Carpick, Robert W. (University of Wisconsin, Madison, WI); Street, Mark D. (University of Wisconsin, Madison, WI); Ashurst, William Robert (Auburn University, Auburn, AL); Corwin, Alex David

    2006-01-01T23:59:59.000Z

    This report details results from our last year of work (FY2005) on friction in MEMS as funded by the Campaign 6 program for the Microscale Friction project. We have applied different monolayers to a sensitive MEMS friction tester called the nanotractor. The nanotractor is also a useful actuator that can travel {+-}100 {micro}m in 40 nm steps, and is being considered for several MEMS applications. With this tester, we can find static and dynamic coefficients of friction. We can also quantify deviations from Amontons' and Coulomb's friction laws. Because of the huge surface-to-volume ratio at the microscale, surface properties such as adhesion and friction can dominate device performance, and therefore such deviations are important to quantify and understand. We find that static and dynamic friction depend on the monolayer lubricant applied. The friction data can be modeled with a non-zero adhesion force, which represents a deviation from Amontons' Law. Further, we show preliminary data indicating that the adhesion force depends not only on the monolayer, but also on the normal load applied. Finally, we also observe slip deflections before the transition from static to dynamic friction, and find that they depend on the monolayer.

  19. MEMS-based thin-film fuel cells

    DOE Patents [OSTI]

    Jankowksi, Alan F.; Morse, Jeffrey D.

    2003-10-28T23:59:59.000Z

    A micro-electro-mechanical systems (MEMS) based thin-film fuel cells for electrical power applications. The MEMS-based fuel cell may be of a solid oxide type (SOFC), a solid polymer type (SPFC), or a proton exchange membrane type (PEMFC), and each fuel cell basically consists of an anode and a cathode separated by an electrolyte layer. Additionally catalyst layers can also separate the electrodes (cathode and anode) from the electrolyte. Gas manifolds are utilized to transport the fuel and oxidant to each cell and provide a path for exhaust gases. The electrical current generated from each cell is drawn away with an interconnect and support structure integrated with the gas manifold. The fuel cells utilize integrated resistive heaters for efficient heating of the materials. By combining MEMS technology with thin-film deposition technology, thin-film fuel cells having microflow channels and full-integrated circuitry can be produced that will lower the operating temperature an will yield an order of magnitude greater power density than the currently known fuel cells.

  20. Mining Test Cases To Improve Software Maintenance

    E-Print Network [OSTI]

    Ziftci, Celal

    Chapter 6 Automatically Mining Requirements Relationships6.4 R EQ R EL E X : Mining Requirements Relationships fromTest Cases . . . . 6.4.1 Mining Requirements

  1. System Problem Detection by Mining Console Logs

    E-Print Network [OSTI]

    Xu, Wei

    2010-01-01T23:59:59.000Z

    5.4.1 Stage 1 pattern mining results . . . . . . . . 5.4.25.2 Stage 1: Frequent Pattern Mining . . . . . . . . . .5.2.1 Mining frequent event patterns . . . . .

  2. Indonesian coal mining

    SciTech Connect (OSTI)

    NONE

    2008-11-15T23:59:59.000Z

    The article examines the opportunities and challenges facing the Indonesian coal mining industry and how the coal producers, government and wider Indonesian society are working to overcome them. 2 figs., 1 tab.

  3. Strip Mine Law (Missouri)

    Broader source: Energy.gov [DOE]

    This law authorizes the Land Reclamation Commission of the Department of Natural Resources to adopt and promulgate rules and regulations pertaining to strip mining of coal and reclamation, review...

  4. A. Burns, A. Kusiak, and T. Letsche, Mining Transformed Data Sets, Proceedings of the 8th International Conference on Knowledge-Based Intelligent Information and Engineering Systems, M.Gh. Negoita, R.J.

    E-Print Network [OSTI]

    Kusiak, Andrew

    - fully applied to optimize efficiency of a circulating fluidized bed boiler at a lo- cal power plant for transforming data, for example: Arithmetic operators: (+, -, *, /) This method may involve arithmetic operatorsA. Burns, A. Kusiak, and T. Letsche, Mining Transformed Data Sets, Proceedings of the 8th

  5. Proceedings of the International Conference on Computational Biosciences and Bio-Informatics (ICCBBI 2011), July 2011, Bhubaneswar, India. A Software Tool for Information Management and Data Mining of Biological Data

    E-Print Network [OSTI]

    Baranauskas, José Augusto

    -Informatics (ICCBBI 2011), July 2011, Bhubaneswar, India. A Software Tool for Information Management and Data Mining resources. Understanding how organisms are able to adapt to difficult conditions and how organisms take of saving endangered species, produce effective environmental policies, and produce biological knowledge

  6. Data Mining for Autonomic System Management: A Case Study at FIU-SCIS

    E-Print Network [OSTI]

    Sadjadi, S. Masoud

    Data Mining for Autonomic System Management: A Case Study at FIU-SCIS Technical Report: FIU and Information Sciences (SCIS) at Florida International University (FIU). Keywords Data mining, autonomic for such computing systems. In this paper, we first present an integrated data-driven architecture for computing

  7. MEMS `SMART DUST MOTES' FOR DESIGNING, MONITORING AND ENABLING EFFICIENT LIGHTING

    E-Print Network [OSTI]

    Agogino, Alice M.

    -based lighting system has the potential to achieve many environmental benefits in comparison to existing sensorMEMS `SMART DUST MOTES' FOR DESIGNING, MONITORING AND ENABLING EFFICIENT LIGHTING Alice M. Agogino focused on office lighting monitoring and control based on the new MEMS `smart dust mote' sensor

  8. APPLICATION OF MEMS TECHNOLOGY TO MICRO DIRECT METHANOL FUEL CELL Xiaowei Liu*

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    APPLICATION OF MEMS TECHNOLOGY TO MICRO DIRECT METHANOL FUEL CELL Xiaowei Liu* , Chunguang Suo, email: lxw@hit.edu.cn) ABSTRACT In view of micro fuel cells, the silicon processes are employed for microfabrication of the micro direct methanol fuel cell (DMFC). Using the MEMS technology we have successfully made

  9. MEM Project Guidelines revised 6/25/09 Master of Environmental Management

    E-Print Network [OSTI]

    (including an estimate of hours of work and materials for each task) Project Because the MEM projectMEM Project Guidelines revised 6/25/09 Master of Environmental Management Project Guidelines Project Overview: The culminating experience of students seeking a Master of Environmental Management

  10. A Novel Pump for MEMS Applications Mihir Sen, Daniel Wajerski, and Mohamed Gad-el-Hak

    E-Print Network [OSTI]

    Gad-el-Hak, Mohamed

    1 A Novel Pump for MEMS Applications Mihir Sen, Daniel Wajerski, and Mohamed Gad-el-Hak Department of Fluids Engineering, vol. 118, pp. 624-627, 1996. #12;2 A Novel Pump for MEMS Applications Mihir Sen1 of Notre Dame Notre Dame, IN 46556 We present a novel approach for pumping fluids in micromechanical

  11. System Design and Experimental Evaluation of a MEMS-based Semicircular Canal Prosthesis

    E-Print Network [OSTI]

    Tang, William C

    System Design and Experimental Evaluation of a MEMS-based Semicircular Canal Prosthesis Jiayin Liu evaluation of a unilateral vestibular prosthesis. The sensing element of the prosthesis is a one-axis MEMS the corresponding vestibular nerve branch. Our preliminary experimental evaluations of the prosthesis on a rate

  12. Body Fitted Grid Generation Method with Moving Boundaries and Its Application for analysis of MEMS

    E-Print Network [OSTI]

    Tentzeris, Manos

    Body Fitted Grid Generation Method with Moving Boundaries and Its Application for analysis of MEMS these MEMS devices using body fitted grid generation method with moving boundaries is proposed. This technique is based on the finite-difference time-domain (FD-TD) method and a kind of grid generation

  13. GICHD Mine Dog Testing Project - Soil Sample Results No.3

    SciTech Connect (OSTI)

    PHELAN, JAMES M.; BARNETT, JAMES L.; BENDER, SUSAN FAE ANN; ARCHULETA, LUISA M.

    2003-03-01T23:59:59.000Z

    A mine dog evaluation project initiated by the Geneva International Center for Humanitarian Demining is evaluating the capability and reliability of mine detection dogs. The performance of field-operational mine detection dogs will be measured in test minefields in Afghanistan and Bosnia containing actual, but unfused landmines. Repeated performance testing over two years through various seasonal weather conditions will provide data simulating near real world conditions. Soil samples will be obtained adjacent to the buried targets repeatedly over the course of the test. Chemical analysis results from these soil samples will be used to evaluate correlations between mine dog detection performance and seasonal weather conditions. This report documents the analytical chemical methods and results from the third batch of soils received. This batch contained samples from Kharga, Afghanistan collected in October 2002.

  14. GICHD mine dog testing project - soil sample results #4.

    SciTech Connect (OSTI)

    Barnett, James L.; Phelan, James M.; Archuleta, Luisa M.; Wood, Tyson B.; Donovan, Kelly L.; Bender, Susan Fae Ann

    2003-08-01T23:59:59.000Z

    A mine dog evaluation project initiated by the Geneva International Center for Humanitarian Demining is evaluating the capability and reliability of mine detection dogs. The performance of field-operational mine detection dogs will be measured in test minefields in Afghanistan and Bosnia containing actual, but unfused landmines. Repeated performance testing over two years through various seasonal weather conditions will provide data simulating near real world conditions. Soil samples will be obtained adjacent to the buried targets repeatedly over the course of the test. Chemical analysis results from these soil samples will be used to evaluate correlations between mine dog detection performance and seasonal weather conditions. This report documents the analytical chemical methods and results from the fourth batch of soils received. This batch contained samples from Kharga, Afghanistan collected in April 2003 and Sarajevo, Bosnia collected in May 2003.

  15. Validation of thermal models for a prototypical MEMS thermal actuator.

    SciTech Connect (OSTI)

    Gallis, Michail A.; Torczynski, John Robert; Piekos, Edward Stanley; Serrano, Justin Raymond; Gorby, Allen D.; Phinney, Leslie Mary

    2008-09-01T23:59:59.000Z

    This report documents technical work performed to complete the ASC Level 2 Milestone 2841: validation of thermal models for a prototypical MEMS thermal actuator. This effort requires completion of the following task: the comparison between calculated and measured temperature profiles of a heated stationary microbeam in air. Such heated microbeams are prototypical structures in virtually all electrically driven microscale thermal actuators. This task is divided into four major subtasks. (1) Perform validation experiments on prototypical heated stationary microbeams in which material properties such as thermal conductivity and electrical resistivity are measured if not known and temperature profiles along the beams are measured as a function of electrical power and gas pressure. (2) Develop a noncontinuum gas-phase heat-transfer model for typical MEMS situations including effects such as temperature discontinuities at gas-solid interfaces across which heat is flowing, and incorporate this model into the ASC FEM heat-conduction code Calore to enable it to simulate these effects with good accuracy. (3) Develop a noncontinuum solid-phase heat transfer model for typical MEMS situations including an effective thermal conductivity that depends on device geometry and grain size, and incorporate this model into the FEM heat-conduction code Calore to enable it to simulate these effects with good accuracy. (4) Perform combined gas-solid heat-transfer simulations using Calore with these models for the experimentally investigated devices, and compare simulation and experimental temperature profiles to assess model accuracy. These subtasks have been completed successfully, thereby completing the milestone task. Model and experimental temperature profiles are found to be in reasonable agreement for all cases examined. Modest systematic differences appear to be related to uncertainties in the geometric dimensions of the test structures and in the thermal conductivity of the polycrystalline silicon test structures, as well as uncontrolled nonuniform changes in this quantity over time and during operation.

  16. Sources of stress gradients in electrodeposited Ni MEMS.

    SciTech Connect (OSTI)

    Hearne, Sean Joseph; Floro, Jerrold Anthony; Dyck, Christopher William

    2004-06-01T23:59:59.000Z

    The ability of future integrated metal-semiconductor micro-systems such as RF MEMS to perform highly complex functions will depend on developing freestanding metal structures that offer improved conductivity and reflectivity over polysilicon structures. For example, metal-based RF MEMS technology could replace the bulky RF system presently used in communications, navigation, and avionics systems. However, stress gradients that induce warpage of active components have prevented the implementation of this technology. Figure 1, is an interference micrograph image of a series of cantilever beams fabricated from electrodeposited Ni. The curvature in the beams was the result of stress gradients intrinsic to the electrodeposition process. To study the sources of the stress in electrodeposition of Ni we have incorporated a wafer curvature based stress sensor, the multibeam optical stress sensor, into an electrodeposition cell. We have determined that there are two regions of stress induced by electrodepositing Ni from a sulfamate-based bath (Fig 2). The stress evolution during the first region, 0-1000{angstrom}, was determined to be dependent only on the substrate material (Au vs. Cu), whereas the stress evolution during the second region, >1000{angstrom}, was highly dependent on the deposition conditions. In this region, the stress varied from +0.5 GPa to -0.5GPa, depending solely on the deposition rate. We examined four likely sources for the compressive intrinsic stress, i.e. reduction in tensile stress, and determined that only the adatom diffusion into grain boundaries model of Sheldon, et al. could account for the observed compressive stress. In the presentation, we shall discuss the compressive stress generation mechanisms considered and the ramifications of these results on fabrication of electrodeposited Ni for MEMS applications.

  17. Generic Pattern Mining via Data Mining Template Library

    E-Print Network [OSTI]

    Zaki, Mohammed Javeed

    - rithms for classification, and Weka [20], which is a general purpose Java library of different dataGeneric Pattern Mining via Data Mining Template Library Mohammed J. Zaki, Nilanjana De, Feng Gao. In this paper we propose the Data Mining Template Library, a collec- tion of generic containers and algorithms

  18. A novel method of fabricating integrated FETs for MEMS applications.

    SciTech Connect (OSTI)

    Okandan, Murat; Bennett, Reid Stuart; Draper, Bruce Leroy; Mani, Seethambal S.

    2003-07-01T23:59:59.000Z

    This paper demonstrates a simple technique for building n-channel MOSFETs and complex micromechanical systems simultaneously instead of serially, allowing a more straightforward integration of complete systems. The fabrication sequence uses few additional process steps and only one additional masking layer compared to a MEMS-only technology. The process flow forms the MOSFET gate electrode using the first level of mechanical polycrystalline silicon, while the MOSFET source and drain regions are formed by dopant diffusions into the substrate from subsequent levels of heavily doped poly that is used for mechanical elements. The process yields devices with good, repeatable electrical characteristics suitable for a wide range of digital and analog applications.

  19. Micro Electro-Mechanical System (MEMS) Pressure Sensor for Footwear

    DOE Patents [OSTI]

    Kholwadwala, Deepesh K. (Albuquerque, NM); Rohrer, Brandon R. (Albuquerque, NM); Spletzer, Barry L. (Albuquerque, NM); Galambos, Paul C. (Albuquerque, NM); Wheeler, Jason W. (Albuquerque, NM); Hobart, Clinton G. (Albuquerque, NM); Givler, Richard C. (Albuquerque, NM)

    2008-09-23T23:59:59.000Z

    Footwear comprises a sole and a plurality of sealed cavities contained within the sole. The sealed cavities can be incorporated as deformable containers within an elastic medium, comprising the sole. A plurality of micro electro-mechanical system (MEMS) pressure sensors are respectively contained within the sealed cavity plurality, and can be adapted to measure static and dynamic pressure within each of the sealed cavities. The pressure measurements can provide information relating to the contact pressure distribution between the sole of the footwear and the wearer's environment.

  20. GE MEMS for LTE Advanced Mobile Devices | GE Global Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.Newof EnergyFunding OpportunityF G F ! ( ! ( ! ( ! (MEMS

  1. Surface Coal Mining Regulations (Mississippi)

    Broader source: Energy.gov [DOE]

    The Surface Coal Mining Regulations are a combination of permitting requirements and environmental regulations that limit how, where and when coal can be mined. It protects lands that are under...

  2. Montana Coal Mining Code (Montana)

    Broader source: Energy.gov [DOE]

    The Department of Labor and Industry is authorized to adopt rules pertaining to safety standards for all coal mines in the state. The Code requires coal mine operators to make an accurate map or...

  3. School of Mines 2002 2003

    E-Print Network [OSTI]

    is for your use as a source of continuing reference. Please save it. Published by Colorado School of Mines

  4. School of Mines Undergraduate Bulletin

    E-Print Network [OSTI]

    is for your use as a source of continuing reference. Please save it. Published by Colorado School of Mines

  5. Sentiment Analysis and Opinion Mining

    E-Print Network [OSTI]

    Plotkin, Joshua B.

    Sentiment Analysis and Opinion Mining Bing Liu Department of Computer Science University Mining Morgan & Claypool Publishers, May 2012. #12;Bing Liu @ AAAI-2011, Aug. 8, 2011, San Francisco, USA 2 Introduction Opinion mining or sentiment analysis Computational study of opinions, sentiments

  6. Mining the Blazar Sky

    E-Print Network [OSTI]

    Paolo Padovani; Paolo Giommi

    2000-12-15T23:59:59.000Z

    We present the results of our methods to "mine" the blazar sky, i.e., select blazar candidates with very high efficiency. These are based on the cross-correlation between public radio and X-ray catalogs and have resulted in two surveys, the Deep X-ray Radio Blazar Survey (DXRBS) and the "Sedentary" BL Lac survey. We show that data mining is vital to select sizeable, deep samples of these rare active galactic nuclei and we touch upon the identification problems which deeper surveys will face.

  7. Mining Requirements from Closed-Loop Control Models Xiaoqing Jin

    E-Print Network [OSTI]

    Seshia, Sanjit A.

    model of the camshaft in an automobile engine, the thermodynamic model of an internal combustion engine-guided inductive synthesis: an intermediate candidate requirement is synthe- sized from simulation traces simulations. We present two case studies for requirement mining: a simple automobile trans- mission controller

  8. PETROLEUM SOCIETY CANADIAN INSTITUTE OF MINING, METALLURGY & PETROLEUM

    E-Print Network [OSTI]

    Hossain, M. Enamul

    1 PETROLEUM SOCIETY CANADIAN INSTITUTE OF MINING, METALLURGY & PETROLEUM PAPER 2002-092 Effects of Alberta This paper is to be presented at the Petroleum Society's Canadian International Petroleum of the meeting. This paper and any discussion filed will be considered for publication in Petroleum Society

  9. Progress toward a MEMS fabricated 100 GHz oscillator.

    SciTech Connect (OSTI)

    Loubriel, Guillermo Manuel; Lemp, Thomas; Weyn, Mark L.; Coleman, Phillip Dale; Rowley, James E. (SAIC, Albuquerque, NM)

    2006-02-01T23:59:59.000Z

    This report summarizes an LDRD effort which looked at the feasibility of building a MEMS (Micro-Electro-Mechanical Systems) fabricated 100 GHz micro vacuum tube. PIC Simulations proved to be a very useful tool in investigating various device designs. Scaling parameters were identified. This in turn allowed predictions of oscillator growth based on beam parameters, cavity geometry, and cavity loading. The electron beam source was identified as a critical element of the design. FEA's (Field Emission Arrays) were purchased to be built into the micro device. Laboratory testing of the FEA's was also performed which pointed out care and handling issues along with maximum current capabilities. Progress was made toward MEMS fabrication of the device. Techniques were developed and successfully employed to build up several of the subassemblies of the device. However, the lower wall fabrication proved to be difficult and a successful build was not completed. Alternative approaches to building this structure have been identified. Although these alternatives look like good solutions for building the device, it was not possible to complete a redesign and build during the timeframe of this effort.

  10. Frequency-dependent electrostatic actuation in microfluidic MEMS.

    SciTech Connect (OSTI)

    Zavadil, Kevin Robert; Michalske, Terry A.; Sounart, Thomas L.

    2003-09-01T23:59:59.000Z

    Electrostatic actuators exhibit fast response times and are easily integrated into microsystems because they can be fabricated with standard IC micromachining processes and materials. Although electrostatic actuators have been used extensively in 'dry' MEMS, they have received less attention in microfluidic systems probably because of challenges such as electrolysis, anodization, and electrode polarization. Here we demonstrate that ac drive signals can be used to prevent electrode polarization, and thus enable electrostatic actuation in many liquids, at potentials low enough to avoid electrochemistry. We measure the frequency response of an interdigitated silicon comb-drive actuator in liquids spanning a decade of dielectric permittivities and four decades of conductivity, and present a simple theory that predicts the characteristic actuation frequency. The analysis demonstrates the importance of the native oxide on silicon actuator response, and suggests that the actuation frequency can be shifted by controlling the thickness of the oxide. For native silicon devices, actuation is predicted at frequencies less than 10 MHz, in electrolytes of ionic strength up to 100 mmol/L, and thus electrostatic actuation may be feasible in many bioMEMS and other microfluidic applications.

  11. Shock margin testing of a one-axis MEMS accelerometer.

    SciTech Connect (OSTI)

    Parson, Ted Blair; Tanner, Danelle Mary; Buchheit, Thomas Edward

    2008-07-01T23:59:59.000Z

    Shock testing was performed on a selected commercial-off-the-shelf - MicroElectroMechanical System (COTS-MEMS) accelerometer to determine the margin between the published absolute maximum rating for shock and the 'measured' level where failures are observed. The purpose of this testing is to provide baseline data for isolating failure mechanisms under shock and environmental loading in a representative device used or under consideration for use within systems and assemblies of the DOD/DOE weapons complex. The specific device chosen for this study was the AD22280 model of the ADXL78 MEMS Accelerometer manufactured by Analog Devices Inc. This study focuses only on the shock loading response of the device and provides the necessary data for adding influence of environmental exposure to the reliability of this class of devices. The published absolute maximum rating for acceleration in any axis was 4000 G for this device powered or unpowered. Results from this study showed first failures at 8000 G indicating a margin of error of two. Higher shock level testing indicated that an in-plane, but off-axis acceleration was more damaging than one in the sense direction.

  12. Coal Mining on Pitching Seams

    E-Print Network [OSTI]

    Brown, George MacMillan

    1915-01-01T23:59:59.000Z

    . 1915* App r ov e d: Department of Mining Engineering* COAL MUTING ON PITCHING SEAMS A THESIS SUBMITTED TO THE FACULTY OP THE SCHOOL OP ENGINEERING OF THE UNIVERSITY OP KANSAS for THE DEGREE OF ENGINEER OF MINES BY GEORGE MACMILLAN BROWN 1915... PREFACE In the following dissertation on the subject of "Coal Mining in Pitching Beams" the writer desires to describe more particularly those methods of mining peculiar to coal mines in Oklahoma, with which he has been more or less familiar during...

  13. The use of a high-order MEMS deformable mirror in the Gemini Planet Imager

    SciTech Connect (OSTI)

    Poyneer, L A; Bauman, B; Cornelissen, S; Jones, S; Macintosh, B; Palmer, D; Isaacs, J

    2010-12-17T23:59:59.000Z

    We briefly review the development history of the Gemini Planet Imager's 4K Boston Micromachines MEMS deformable mirror. We discuss essential calibration steps and algorithms to control the MEMS with nanometer precision, including voltage-phase calibration and influence function characterization. We discuss the integration of the MEMS into GPI's Adaptive Optics system at Lawrence Livermore and present experimental results of 1.5 kHz closed-loop control. We detail mitigation strategies in the coronagraph to reduce the impact of abnormal actuators on final image contrast.

  14. Mine seismicity and the Comprehensive Nuclear Test Ban Treaty

    SciTech Connect (OSTI)

    Chiappetta, F. [Blasting Analysis International, Allentown, PA (United States); Heuze, F.; Walter, W. [Lawrence Livermore National Lab., CA (United States); Hopler, R. [Powderman Consulting Inc., Oxford, MD (United States); Hsu, V. [Air Force Technical Applications Center, Patrick AFB, FL (United States); Martin, B. [Thunder Basin Coal Co., Wright, WY (United States); Pearson, C. [Los Alamos National Lab., NM (United States); Stump, B. [Southern Methodist Univ., Dallas, TX (United States); Zipf, K. [Univ. of New South Wales (Australia)

    1998-12-09T23:59:59.000Z

    Surface and underground mining operations generate seismic ground motions which are created by chemical explosions and ground failures. It may come as a surprise to some that the ground failures (coal bumps, first caves, pillar collapses, rockbursts, etc.) can send signals whose magnitudes are as strong or stronger than those from any mining blast. A verification system that includes seismic, infrasound, hydroacoustic and radionuclide sensors is being completed as part of the CTBT. The largest mine blasts and ground failures will be detected by this system and must be identified as distinct from signals generated by small nuclear explosions. Seismologists will analyze the seismic records and presumably should be able to separate them into earthquake-like and non earthquake-like categories, using a variety of so-called seismic discriminants. Non-earthquake essentially means explosion- or implosion-like. Such signals can be generated not only by mine blasts but also by a variety of ground failures. Because it is known that single-fired chemical explosions and nuclear explosion signals of the same yield give very similar seismic records, the non-earthquake signals will be of concern to the Treaty verification community. The magnitude of the mine-related events is in the range of seismicity created by smaller nuclear explosions or decoupled tests, which are of particular concern under the Treaty. It is conceivable that legitimate mining blasts or some mine-induced ground failures could occasionally be questioned. Information such as shot time, location and design parameters may be all that is necessary to resolve the event identity. In rare instances where the legitimate origin of the event could not be resolved by a consultation and clarification procedure, it might trigger on On-Site Inspection (OSI). Because there is uncertainty in the precise location of seismic event as determined by the International Monitoring System (IMS), the OSI can cover an area of up to 1,000 squared kilometers. In active mining districts this area could include several different mining operations. So, an OSI could be disruptive both to the mining community and to the US Government which must host the foreign inspection team. Accordingly, it is in the best interest of all US parties to try and eliminate the possible occurrence of false alarms. This can be achieved primarily by reducing the ambiguity of mine-induced seismic signals, so that even if these remain visible to the IMS they are clearly consistent with recognizable mining patterns.

  15. A MEMS-based, high-resolution Electric-Field meter

    E-Print Network [OSTI]

    Shafran, John Sawa

    2005-01-01T23:59:59.000Z

    In MEMS-based inertial sensors, such as accelerometers and gyroscopes, known electrical waveforms are applied to a modulating capacitive element to determine an unknown deflection. However, the inverse of this scheme can ...

  16. Design optimization for bioMEMS studies of enzyme-controlled metabolic pathways

    E-Print Network [OSTI]

    Rubloff, Gary W.

    . Rubloff # Springer Science + Business Media, LLC 2008 Abstract Biological microelectromechanical systems maintaining its catalytic activity. While promising as a methodology to replicate metabolic pathways in bioMEMS Microfluidic devices and polydimethylsiloxane (PDMS) soft lithography fabrication have reduced

  17. Self-powered wireless sensor system using MEMS piezoelectric micro power generator (PMPG)

    E-Print Network [OSTI]

    Xia, YuXin, M.B.A. Sloan School of Management.

    2006-01-01T23:59:59.000Z

    A thin-film lead zirconate titanate, Pb(Zr,Ti)03, MEMS Piezoelectric Micro Power Generator (PMPG) has been integrated with a commercial wireless sensor node (Telos), to demonstrate a self-powered RF temperature sensor ...

  18. JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 16, NO. 5, OCTOBER 2007 1185 RF MEMS Sequentially Reconfigurable Sierpinski

    E-Print Network [OSTI]

    Tentzeris, Manos

    , Istanbul 80910, Turkey Design Methodology for Microelectromechanical Systems. Case Study: Torsional Scanner Mirror Future optical microsystems, such as microelectromechanical system (MEMS) scanners rapidly. There are a variety of specialized computer aided design tools in the microelectromechanical

  19. Piezoelectric Micro Power Generator (PMPG) : a MEMS-based energy scavenger

    E-Print Network [OSTI]

    Sood, Rajendra K. (Rajendra Kumar), 1979-

    2003-01-01T23:59:59.000Z

    As MEMS and smart material technologies begin to mature, their applications, such as medical implants and wireless communications are becoming more attractive. Traditionally, remote devices have used chemical batteries to ...

  20. Emergency delivery of Vasopressin from an implantable MEMS rapid drug delivery device

    E-Print Network [OSTI]

    Ho Duc, Hong Linh, 1978-

    2009-01-01T23:59:59.000Z

    An implantable rapid drug delivery device based on micro-electro-mechanical systems (MEMS) technology was designed, fabricated and validated for the in vivo rapid delivery of vasopressin in a rabbit model. In vitro ...

  1. A circular electrostatic zipping actuator for the application of a MEMS tunable capacitor

    E-Print Network [OSTI]

    Yang, Xue'en, 1975-

    2005-01-01T23:59:59.000Z

    Micromechanical circuits such as MEMS switches, tunable capacitors (varactors) or resonators in general have lower loss and consume less power than their CMOS counterparts and have seen an increase of applications in ...

  2. Mechanical characterization and in vivo operation of an implantable drug delivery MEMS device

    E-Print Network [OSTI]

    Li, Yawen, 1972-

    2005-01-01T23:59:59.000Z

    The goal of this thesis was to advance an implantable drug delivery MEMS (MicroElectroMechanical Systems) device developed in our laboratory. This device was designed to locally deliver multiple substances in complex release ...

  3. Assembling 3D MEMS structures by folding, aligning and latching 2D patterned films

    E-Print Network [OSTI]

    Shaar, Nader S. (Nader Salah)

    2014-01-01T23:59:59.000Z

    The techniques used in the fabrication of micro-electro-mechanical systems (MEMS) were adopted from the integrated circuits (IC) industry and are mostly limited to patterning thin films on a flat substrate. As a consequence, ...

  4. EXPERIMENTAL INVESTIGATION OF ORGANIC MEMS BASED CONDUCTIVE POLYMER-METAL COMPOSITE

    E-Print Network [OSTI]

    Kassegne, Samuel Kinde

    EXPERIMENTAL INVESTIGATION OF ORGANIC MEMS BASED CONDUCTIVE POLYMER-METAL COMPOSITE Diego State University, 2012 This research investigates SU-8/Ag conductive polymer composite of conductive polymer composite. Microscopic analysis using 3D microscope carried out for agglomeration

  5. Ultrasensitive measurement of MEMS cantilever displacement sensitivity below the shot noise limit

    E-Print Network [OSTI]

    R. C. Pooser; B. J. Lawrie

    2015-04-04T23:59:59.000Z

    The displacement of micro-electro-mechanical-systems (MEMS) cantilevers is used to measure a broad variety of phenomena in devices ranging from force microscopes to biochemical sensors to thermal imaging systems. We demonstrate the first direct measurement of a MEMS cantilever displacement with a noise floor at 40% of the shot noise limit (SNL). By combining multi-spatial-mode quantum light sources with a simple ?differential measurement, we show that sub-SNL MEMS displacement sensitivity is highly accessible compared to previous efforts that measured the displacement of macroscopic mirrors with very distinct spatial structures crafted with multiple optical parametric amplifiers and locking loops. These results support a new class of quantum MEMS sensor with an ultimate signal to noise ratio determined by quantum correlations, enabling ultra-trace sensing, imaging, and microscopy applications in which signals were previously obscured by shot noise.

  6. Syllabus for Preliminary Examination in Micro Electro Mechanical Systems (MEMS) October 2009*

    E-Print Network [OSTI]

    California at Irvine, University of

    , diffusion, and bonding. You should especially have a good understanding of MEMS-centric etching and what micromachining, including selective wet etch methods, deep reactive ion etching, and bonding methods. 6

  7. Mem. S.A.It. Vol. 73, 23 SAIt 2002 Memorie della

    E-Print Network [OSTI]

    Mem. S.A.It. Vol. 73, 23 c SAIt 2002 Memorie della High Performance Computing at INAF/OAPA Fabio and in high performance computing (HPC). During 2000, INAF/OAPA has acquired a HPC facility, entirely devoted

  8. Imaging the foveal cone mosaic with a MEMS-based adaptive optics scanning laser ophthalmoscope

    E-Print Network [OSTI]

    Li, Yiang

    2010-01-01T23:59:59.000Z

    function of axial length at the PRL Results from running theIPT LQ LQR MEMS OCT OPD PID PRL PSD PSF PSI RMF RMS RPE SLDpreferred retinal locus (PRL), and the scan angle was 1°. An

  9. Tunable Substrate Integrated Waveguide Filters Implemented with PIN Diodes and RF MEMS Switches 

    E-Print Network [OSTI]

    Armendariz, Marcelino

    2012-02-14T23:59:59.000Z

    This thesis presents the first fully tunable substrate integrated waveguide (SIW) filter implemented with PIN diodes and RF MEMS switches. The methodology for tuning SIW filters is explained in detail and is used to create three separate designs...

  10. Tunable Substrate Integrated Waveguide Filters Implemented with PIN Diodes and RF MEMS Switches

    E-Print Network [OSTI]

    Armendariz, Marcelino

    2012-02-14T23:59:59.000Z

    This thesis presents the first fully tunable substrate integrated waveguide (SIW) filter implemented with PIN diodes and RF MEMS switches. The methodology for tuning SIW filters is explained in detail and is used to create three separate designs...

  11. Polyelectrolyte multilayers (PEM) in micro / nanofluidics for novel BioMEMS platforms

    E-Print Network [OSTI]

    Jang, Hongchul

    2010-01-01T23:59:59.000Z

    The overall goal of this thesis was to exploit the versatility of the polyelectrolyte multilayer (PEM) to fabricate a novel micro/nanofluidic device for patterning bacteria in BioMEMS. Nanofluidic channels offer new ...

  12. Data Mining ICPSR Summer Program, 2008

    E-Print Network [OSTI]

    Stine, Robert A.

    Data Mining ICPSR Summer Program, 2008 Robert Stine Statistics Department Wharton School-stat.wharton.upenn.edu/~stine These lectures introduce data mining. Once a nasty thing to be accused of, data mining has become respectable, useful, and even necessary. What is data mining? Basically, data mining refers to statistical algorithms

  13. The Sandia MEMS passive shock sensor : FY08 design summary.

    SciTech Connect (OSTI)

    Walraven, Jeremy Allen; Baker, Michael Sean; Clemens, Rebecca C.; Mitchell, John Anthony; Brake, Matthew Robert; Epp, David S.; Wittwer, Jonathan W.

    2008-11-01T23:59:59.000Z

    This report summarizes design and modeling activities for the MEMS passive shock sensor. It provides a description of past design revisions, including the purposes and major differences between design revisions but with a focus on Revisions 4 through 7 and the work performed in fiscal year 2008 (FY08). This report is a reference for comparing different designs; it summarizes design parameters and analysis results, and identifies test structures. It also highlights some of the changes and or additions to models previously documented [Mitchell et al. 2006, Mitchell et al. 2008] such as the way uncertainty thresholds are analyzed and reported. It also includes dynamic simulation results used to investigate how positioning of hard stops may reduce vibration sensitivity.

  14. Integration of optoelectronics and MEMS by free-space micro-optics

    SciTech Connect (OSTI)

    WARREN,MIAL E.; SPAHN,OLGA B.; SWEATT,WILLIAM C.; SHUL,RANDY J.; WENDT,JOEL R.; VAWTER,GREGORY A.; KRYGOWSKI,TOM W.; REYES,DAVID NMN; RODGERS,M. STEVEN; SNIEGOWSKI,JEFFRY J.

    2000-06-01T23:59:59.000Z

    This report represents the completion of a three-year Laboratory-Directed Research and Development (LDRD) program to investigate combining microelectromechanical systems (MEMS) with optoelectronic components as a means of realizing compact optomechanical subsystems. Some examples of possible applications are laser beam scanning, switching and routing and active focusing, spectral filtering or shattering of optical sources. The two technologies use dissimilar materials with significant compatibility problems for a common process line. This project emphasized a hybrid approach to integrating optoelectronics and MEMS. Significant progress was made in developing processing capabilities for adding optical function to MEMS components, such as metal mirror coatings and through-vias in the substrate. These processes were used to demonstrate two integration examples, a MEMS discriminator driven by laser illuminated photovoltaic cells and a MEMS shutter or chopper. Another major difficulty with direct integration is providing the optical path for the MEMS components to interact with the light. The authors explored using folded optical paths in a transparent substrate to provide the interconnection route between the components of the system. The components can be surface-mounted by flip-chip bonding to the substrate. Micro-optics can be fabricated into the substrate to reflect and refocus the light so that it can propagate from one device to another and them be directed out of the substrate into free space. The MEMS components do not require the development of transparent optics and can be completely compatible with the current 5-level polysilicon process. They report progress on a MEMS-based laser scanner using these concepts.

  15. Ultrananocrystalline diamond films with optimized dielectric properties for advanced RF MEMS capacitive switches

    DOE Patents [OSTI]

    Sumant, Anirudha V.; Auciello, Orlando H.; Mancini, Derrick C.

    2013-01-15T23:59:59.000Z

    An efficient deposition process is provided for fabricating reliable RF MEMS capacitive switches with multilayer ultrananocrystalline (UNCD) films for more rapid recovery, charging and discharging that is effective for more than a billion cycles of operation. Significantly, the deposition process is compatible for integration with CMOS electronics and thereby can provide monolithically integrated RF MEMS capacitive switches for use with CMOS electronic devices, such as for insertion into phase array antennas for radars and other RF communication systems.

  16. Method and system for automated on-chip material and structural certification of MEMS devices

    DOE Patents [OSTI]

    Sinclair, Michael B.; DeBoer, Maarten P.; Smith, Norman F.; Jensen, Brian D.; Miller, Samuel L.

    2003-05-20T23:59:59.000Z

    A new approach toward MEMS quality control and materials characterization is provided by a combined test structure measurement and mechanical response modeling approach. Simple test structures are cofabricated with the MEMS devices being produced. These test structures are designed to isolate certain types of physical response, so that measurement of their behavior under applied stress can be easily interpreted as quality control and material properties information.

  17. INTERNATIONAL International Internship for

    E-Print Network [OSTI]

    Napier, Terrence

    OFFICE OF INTERNATIONAL AFFAIRS International Internship for Global Leadership Program Student Portugal ­ Laura Sieger Ukraine ­ Mary Brune 2012 Internship Locations #12;Dear Friends and Colleagues of Lehigh University: The International Internship for Global Leadership Program provides Lehigh students

  18. Towards Data Mining Benchmarking: A Test Bed for Performance Study of Frequent Pattern Mining

    E-Print Network [OSTI]

    Pei, Jian

    Towards Data Mining Benchmarking: A Test Bed for Performance Study of Frequent Pattern Mining Jian, object-relational DBMS, data warehouse sys- tems, etc. We believe that benchmarking data mining mining systems as well. Frequent pattern mining forms a core component in mining associations

  19. ITP Mining: Education Roadmap for Mining Professionals (December...

    Broader source: Energy.gov (indexed) [DOE]

    this path supply Americans with the basic materials needed to sustain their standard of living. However, the role of the mining industry in meeting these needs is often...

  20. Intergas `95: International unconventional gas symposium. Proceedings

    SciTech Connect (OSTI)

    NONE

    1995-07-01T23:59:59.000Z

    The International Unconventional Gas Symposium was held on May 14--20, 1995 in Tuscaloosa, Alabama where 52 reports were presented. These reports are grouped in this proceedings under: geology and resources; mine degasification and safety; international developments; reservoir characterization/coal science; and environmental/legal and regulatory. Each report has been processed separately for inclusion in the Energy Science and Technology Database.

  1. Exact Primitives for Time Series Data Mining

    E-Print Network [OSTI]

    Mueen, Abdullah Al

    2012-01-01T23:59:59.000Z

    G. Silva, and Rui M. M. Brito. Mining approximate motifs intime series. In Data Mining, 2001. ICDM 2001, Proceedingson Knowledge discovery and data mining, KDD, pages 947–956,

  2. Data Mining Historical Manuscripts and Culture Artifacts

    E-Print Network [OSTI]

    Zhu, Qiang

    2011-01-01T23:59:59.000Z

    Workshop on Temporal Data Mining. [62] Liu, Y. , Zhang, D. ,Faloutsos, C. 2006. Automatic mining of fruit fly embryo2011. The Mouse that Roared: Mining Massive Archives of Mice

  3. Efficient Algorithms for High Dimensional Data Mining

    E-Print Network [OSTI]

    Rakthanmanon, Thanawin

    2012-01-01T23:59:59.000Z

    E. J. Keogh. 2008. Querying and mining of time series data:Dupasquier and S. Burschka. 2011. Data mining for hackers –encrypted traffic mining. The 28 th Chaos Comm’ Congress. Y.

  4. Data Mining Within a Regression Framework

    E-Print Network [OSTI]

    Richard A. Berk

    2011-01-01T23:59:59.000Z

    I.H. and E. Frank. (2000). Data Mining. New York: Morgan and2003) Exploratory Data Mining and Data Cleaning. New York:2001) Principle of Data Mining. Cambridge, Massachusetts:

  5. DTC DATA MINING CONSORTIUM MEMBERSHIP BENEFITS

    E-Print Network [OSTI]

    Minnesota, University of

    DTC DATA MINING CONSORTIUM MEMBERSHIP BENEFITS I Collaboration with leading companies I BEHAVIORAL ECOLOGY DRUG DISCOVERY BUSINESS SALES & MARKETING AUTOMOTIVE CRM GOVERNMENT CYBER SECURITY Creation Analysis Optimization Scalable Database Mining Auto-Mining Agents CUTTING-EDGE CAPABILITIES

  6. Data Mining Within a Regression Framework

    E-Print Network [OSTI]

    Berk, Richard

    2004-01-01T23:59:59.000Z

    I.H. and E. Frank. (2000). Data Mining. New York: Morgan and2003) Exploratory Data Mining and Data Cleaning. New York:2001) Principle of Data Mining. Cambridge, Massachusetts:

  7. The Environmental Aspects of Deep Seabed Mining

    E-Print Network [OSTI]

    Kindt, John Warren

    1989-01-01T23:59:59.000Z

    United States Deep Seabed Mining, 19 WM. & MARY L. REV. 77 (Aspects of Deep Seabed Mining" John Warren Kindt* I.with deep seabed mining. As of 1988, the available

  8. An experimental investigation of mine burial penetration in soft sediments

    E-Print Network [OSTI]

    Munim, Mohammed Abdul

    2003-01-01T23:59:59.000Z

    of that of actual mines. The factors selected for the investigation were mine weight, preburial condition of the mine, mine orientation, impact velocity of the mine and shear strength and creep characteristics of the soil. Only the geotechnical aspects...

  9. Insider Threat Detection using Stream Mining and Graph Mining

    E-Print Network [OSTI]

    Hamlen, Kevin W.

    Insider Threat Detection using Stream Mining and Graph Mining Pallabi Parveen, Jonathan Evans threats who attempt to conceal their activities by varying their behaviors over time. This paper applies of insider threat detection, demonstrating that the ensemble-based approach is significantly more effective

  10. Arkansas Surface Coal Mining Reclamation Act (Arkansas)

    Broader source: Energy.gov [DOE]

    The Arkansas Surface Coal Mining Reclamation Act authorizes the state to develop, adopt, issue and amend rules and regulations pertaining to surface coal mining and reclamation operations. These...

  11. Minerals and Mining Program (South Dakota)

    Broader source: Energy.gov [DOE]

    The Minerals and Mining Program has the authority to oversee mining activities in the state and issue regulations pertaining to the permitting and environmental impact mitigation of, and...

  12. Climate VISION: PrivateSector Initiatives: Mining

    Office of Scientific and Technical Information (OSTI)

    Letters of IntentAgreements National Mining Association Logo Read the National Mining Association Commitment Letter (PDF 68 KB) Download Acrobat Reader...

  13. November 2012 SOCIETY for MINING, METALLURGY, and

    E-Print Network [OSTI]

    November 2012 2013-2014 SOCIETY for MINING, METALLURGY, and EXPLORATION (SME) Colorado Section goals (mining/civil/environmental engineering, metallurgy, economic geology, geochemistry

  14. Hydraulic mining method

    DOE Patents [OSTI]

    Huffman, Lester H. (Kent, WA); Knoke, Gerald S. (Kent, WA)

    1985-08-20T23:59:59.000Z

    A method of hydraulically mining an underground pitched mineral vein comprising drilling a vertical borehole through the earth's lithosphere into the vein and drilling a slant borehole along the footwall of the vein to intersect the vertical borehole. Material is removed from the mineral vein by directing a high pressure water jet thereagainst. The resulting slurry of mineral fragments and water flows along the slant borehole into the lower end of the vertical borehole from where it is pumped upwardly through the vertical borehole to the surface.

  15. Mining | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOil &315_ArnibanPriority DataPARTMining Mining Supply and cost

  16. Web Mining for Hyperlinked Communities

    E-Print Network [OSTI]

    Hu, Wen-Chen

    Web Mining for Hyperlinked Communities Gary William Flake flake@research.nj.nec.com NEC Research Institute #12;Motivation for Web Mining More than 1B web pages and 20TB of raw data. Even more content will always be disorganized (or at best self-organized). In the future, everything will be on the web

  17. Mining for Helium Jurriaan Hage

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Mining for Helium Jurriaan Hage Peter van Keeken Department of Information and Computing Sciences-year functional programming course using the Helium compiler. The mining of such a collection is not trivial a type error. 1 #12;1 Introduction and motivation When the Helium compiler for learning Haskell

  18. Measuring mine roof bolt strains

    DOE Patents [OSTI]

    Steblay, Bernard J. (Lakewood, CO)

    1986-01-01T23:59:59.000Z

    A mine roof bolt and a method of measuring the strain in mine roof bolts of this type are disclosed. According to the method, a flat portion on the head of the mine roof bolt is first machined. Next, a hole is drilled radially through the bolt at a predetermined distance from the bolt head. After installation of the mine roof bolt and loading, the strain of the mine roof bolt is measured by generating an ultrasonic pulse at the flat portion. The time of travel of the ultrasonic pulse reflected from the hole is measured. This time of travel is a function of the distance from the flat portion to the hole and increases as the bolt is loaded. Consequently, the time measurement is correlated to the strain in the bolt. Compensation for various factors affecting the travel time are also provided.

  19. IBM Research CS/EE/Math Summer Intern Program

    E-Print Network [OSTI]

    Pang, Alex

    Intern Program in Computer Science, Electrical Engineering, and Mathematical Sciences at its locations.com/ Selected Research Areas Computer Science - Algorithms and Theory - Artificial Intelligence - Communications and Theory - Economics - Industrial Engineering - Knowledge Discovery and Data Mining - Management Science

  20. Black Thunder Coal Mine and Los Alamos National Laboratory experimental study of seismic energy generated by large scale mine blasting

    SciTech Connect (OSTI)

    Martin, R.L.; Gross, D. [Thunder Basin Coal Co., Wright, WY (United States); Pearson, D.C.; Stump, B.W. [Los Alamos National Lab., NM (United States); Anderson, D.P. [Southern Methodist Univ., Dallas, TX (United States). Dept. of Geological Sciences

    1996-12-31T23:59:59.000Z

    In an attempt to better understand the impact that large mining shots will have on verifying compliance with the international, worldwide, Comprehensive Test Ban Treaty (CTBT, no nuclear explosion tests), a series of seismic and videographic experiments has been conducted during the past two years at the Black Thunder Coal Mine. Personnel from the mine and Los Alamos National Laboratory have cooperated closely to design and perform experiments to produce results with mutual benefit to both organizations. This paper summarizes the activities, highlighting the unique results of each. Topics which were covered in these experiments include: (1) synthesis of seismic, videographic, acoustic, and computer modeling data to improve understanding of shot performance and phenomenology; (2) development of computer generated visualizations of observed blasting techniques; (3) documentation of azimuthal variations in radiation of seismic energy from overburden casting shots; (4) identification of, as yet unexplained, out of sequence, simultaneous detonation in some shots using seismic and videographic techniques; (5) comparison of local (0.1 to 15 kilometer range) and regional (100 to 2,000 kilometer range) seismic measurements leading to determine of the relationship between local and regional seismic amplitude to explosive yield for overburden cast, coal bulking and single fired explosions; and (6) determination of the types of mining shots triggering the prototype International Monitoring System for the CTBT.

  1. Aluminum Nitride Thin Films on Titanium for Piezoelectric MEMS Applications Seth Boeshore, Emily Parker, Vanni Lughi, Noel C. MacDonald

    E-Print Network [OSTI]

    MacDonald, Noel C.

    Aluminum Nitride Thin Films on Titanium for Piezoelectric MEMS Applications Seth Boeshore, Emily nitride thin films have been deposited onto titanium substrates for the purpose of fabricating piezoelectric MEMS. Titanium is a new and attractive platform for MEMS because of its corrosion resistance

  2. Final report : compliant thermo-mechanical MEMS actuators, LDRD #52553.

    SciTech Connect (OSTI)

    Walraven, Jeremy Allen; Baker, Michael Sean; Headley, Thomas Jeffrey; Plass, Richard Anton

    2004-12-01T23:59:59.000Z

    Thermal actuators have proven to be a robust actuation method in surface-micromachined MEMS processes. Their higher output force and lower input voltage make them an attractive alternative to more traditional electrostatic actuation methods. A predictive model of thermal actuator behavior has been developed and validated that can be used as a design tool to customize the performance of an actuator to a specific application. This tool has also been used to better understand thermal actuator reliability by comparing the maximum actuator temperature to the measured lifetime. Modeling thermal actuator behavior requires the use of two sequentially coupled models, the first to predict the temperature increase of the actuator due to the applied current and the second to model the mechanical response of the structure due to the increase in temperature. These two models have been developed using Matlab for the thermal response and ANSYS for the structural response. Both models have been shown to agree well with experimental data. In a parallel effort, the reliability and failure mechanisms of thermal actuators have been studied. Their response to electrical overstress and electrostatic discharge has been measured and a study has been performed to determine actuator lifetime at various temperatures and operating conditions. The results from this study have been used to determine a maximum reliable operating temperature that, when used in conjunction with the predictive model, enables us to design in reliability and customize the performance of an actuator at the design stage.

  3. Robust hermetic packaging techniques for MEMS integrated microsystems.

    SciTech Connect (OSTI)

    Chae, Junseok (University of Michigan); Stark, Brian H. (University of Michigan); Kuo, Andrew (University of Michigan); Oliver, Andrew David; Najafi, Khalil (University of Michigan)

    2005-03-01T23:59:59.000Z

    This work is the result of a Sandia National Laboratories LDRD funded fellowship at the University of Michigan. Although, guidance and suggestions were offered by Sandia, the work contained here is primarily the work of Brian H. Stark, and his advisor, Professor Khalil Najafi. Junseok Chae, Andrew Kuo, and their coworkers at the University of Michigan helped to record some of the data. The following is an abstract of their work. We have developed a vacuum packaging technology using a thick nickel film to seal MEMS structures at the wafer level. The package is fabricated in a three-mask process by electroplating a 40 micro-meter thick nickel film over an 8 micro-meter sacrificial photoresist that is removed prior to package sealing. Implementation of electrical feedthroughs in this process requires no planarization. The large release channel enables an 800x800 micro-meter package to be released in less than three hours. Several mechanisms, based upon localized melting and lead/tin solder bumping, for sealing the release channel have been investigated. We have also developed Pirani gauges, integrated with this package, which can be used to establish the hermeticity of the different sealing technologies. They have measured a sealing pressure of approximately 1.5 Torr. Our work differs from previous Pirani gauges in that we utilize a novel doubly anchored structure that stiffens the structural membrane while not substantially degrading performance in order to measure fine leak rates.

  4. JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 16, NO. 5, OCTOBER 2007 1263 Direct Contact-Area Computation for MEMS

    E-Print Network [OSTI]

    Sawyer, Wallace

    200 JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 13, NO. 2, APRIL 2004 Mechanical in microelectromechanical systems (MEMS). The former is a pure tension test, while the latter is a single of thin polysilicon films in microelectromechanical systems (MEMS) (see, e.g., [1], [2]) requires

  5. 3-D Computational Modeling of RF MEMS Switches H. D. Espinosa, M. Fischer, Y. Zhu and S. Lee

    E-Print Network [OSTI]

    Espinosa, Horacio D.

    in this work by means of wafer level experimental techniques. RF MEMS Switches manufactured by Raytheon Systems, Raytheon Systems Co. developed MEMS switches to operate in tunable filters and oscillators used by Raytheon Systems Co. (b) Top view of the "bow-tie" membrane mounted on posts. It is made of an aluminum

  6. Abstract--Titanium nitride (TiN) has been investigated as a material for MEMS hotplate heaters operating at high

    E-Print Network [OSTI]

    Technische Universiteit Delft

    Abstract--Titanium nitride (TiN) has been investigated as a material for MEMS hotplate heaters widely available. A material similar to Ta5Si3 is titanium nitride (TiN). It combines a very high melting TiN Bond pad TiN Figure 1. Schematic cross section of the hotplate. Titanium Nitride for MEMS

  7. NEW MEXICO SCHOOL OF MINES STATE BUREAU OF MINES AND MINERAL RESOURCES

    E-Print Network [OSTI]

    Lee, Cin-Ty Aeolus

    NEW MEXICO SCHOOL OF MINES STATE BUREAU OF MINES AND MINERAL RESOURCES BULLETIN 13 FRONTISPIECE PIT AT HARDING MINE (To left of dump) DUMP AT HARDING MINE (To right of pit) #12;NEW MEXICO SCHOOL OF MINES STATE and Economic Features of the Pegmatites of Taos and Rio Arriba Counties, New Mexico By EVAN JUST SOCORRO, N. M

  8. Video Mining with Frequent Itemset Configurations

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Video Mining with Frequent Itemset Configurations Till Quack1 , Vittorio Ferrari2 , and Luc Van Gool1 1 ETH Zurich 2 LEAR - INRIA Grenoble Abstract. We present a method for mining frequently arrangements of affine covariant regions. Our mining method is based on the class of frequent itemset mining

  9. Mining Weighted Association Rules without Preassigned Weights

    E-Print Network [OSTI]

    Bai, Fengshan

    Mining Weighted Association Rules without Preassigned Weights Ke Sun and Fengshan Bai Abstract--Association rule mining is a key issue in data mining. However, the classical models ignore the difference between the transactions, and the weighted association rule mining does not work on databases with only binary attributes

  10. Identifying Relevant Databases for Multidatabase Mining

    E-Print Network [OSTI]

    Liu, Huan

    Identifying Relevant Databases for Multidatabase Mining Huan Liu, Hongjun Lu, Jun Yao Department,luhj,yaojung@iscs.nus.edu.sg Abstract. Various tools and systems for knowledge discovery and data mining are developed and available is where we should start mining. In this paper, breaking away from the conventional data mining assumption

  11. Department of Geophysics Colorado School of Mines

    E-Print Network [OSTI]

    Department of Geophysics Colorado School of Mines Golden, CO 80401 http://www.geophysics Colorado School of Mines CGEM Dongjie Cheng #12;#12;Department of Geophysics Colorado School of Mines Golden, CO 80401 http://www.geophysics.mines.edu/cgem Defended: December 2003 Advisor: Dr. Yaoguo Li (GP

  12. Department of Geophysics Colorado School of Mines

    E-Print Network [OSTI]

    Department of Geophysics Colorado School of Mines Golden, CO 80401 http://www.geophysics Colorado School of Mines CGEM Alisa Marie Green #12;Department of Geophysics Colorado School of Mines Golden, CO 80401 http://www.geophysics.mines.edu/cgem Defended: November 06, 2003 Advisor: Dr. Yaoguo Li

  13. Patrick Dudas Data Mining for Web Personalization

    E-Print Network [OSTI]

    Brusilovsky, Peter

    -gram corpuses, traffic statistics, OpenStreetMap dataset,Wikipedia traffic... #12;4/8/11 5 Data Mining Web4/8/11 1 Patrick Dudas Data Mining for Web Personalization Outline Personalization Data mining Examples Web mining MapReduce Data Preprocessing Knowledge Discovery Evaluation Information

  14. Integrated superhard and metallic coatings for MEMS : LDRD 57300 final report.

    SciTech Connect (OSTI)

    de Boer, Maarten Pieter; Maboudian, Roya (University of California at Berkeley, Berkeley, CA.)

    2004-12-01T23:59:59.000Z

    Two major research areas pertinent to microelectromechanical systems (MEMS) materials and material surfaces were explored and developed in this 5-year PECASE LDRD project carried out by Professor Roya Maboudian and her collaborators at the University of California at Berkeley. In the first research area, polycrystalline silicon carbide (poly-SiC) was developed as a structural material for MEMS. This material is potentially interesting for MEMS because compared to polycrystalline silicon (polysilicon), the structural material in Sandia National Laboratories' SUMMiTV process, it may exhibit high wear resistance, high temperature operation and a high Young's modulus to density ratio. Each of these characteristics may extend the usefulness of MEMS in Sandia National Laboratories' applications. For example, using polycrystalline silicon, wear is an important issue in microengines, temperature degradation is of concern in thermal actuators and the characteristics of resonators can be extended with the same lithography technology. Two methods of depositing poly-SiC from a 1,3-disilabutane source at 650 C to 800 C by low-pressure chemical vapor deposition (LPCVD) were demonstrated. These include a blanket method in which the material is made entirely out of poly-SiC and a method to coat previously released and fabricated polysilicon MEMS. This deposition method is much simpler to use than previous methods such as high temperature LPCVD and atmospheric CVD. Other major processing issues that were surmounted in this LDRD with the poly-SiC film include etching, doping, and residual strain control. SiC is inert and as such is notoriously difficult to etch. Here, an HBr-based chemistry was demonstrated for the first time to make highly selective etching of SiC at high etch rates. Nitrogen was incorporated from an NH3 gas source, resulting in high conductivity films. Residual strain and strain gradient were shown to depend on deposition parameters, and can be made negative or positive. The tribology of poly-SiC was also investigated. Much improved release stiction and in-use stiction performance relative to polysilicon MEMS was found. Furthermore, wear of poly-SiC-coated MEMS was much reduced relative to uncoated polysilicon MEMS. A prototype baseline process flow now exists to produce poly-SiC in the Berkeley Sensor and Actuator (BSAC) facility. In the second project, galvanic deposition of metals onto polysilicon surfaces has been developed. The possible applications include reflective and optical coatings for optical MEMS, microswitches and microrelays for radio frequency MEMS and catalytic surfaces for microchemical reactors. In contrast to electroless deposition, galvanic displacement deposition requires no prior activation of the surface and is truly selective to silicon surfaces. This approach was used to deposit copper, gold and rhodium onto polysilicon MEMS. A method to study the adhesion of these metals to polysilicon was developed. It was also shown that the surfaces could be rendered hydrophobic by applying thiol-based self-assembled monolayers. This procedure also lowered their surface energy to {approx}3 {micro}J/m{sup 2}, consistent with monolayer-coated polysilicon MEMS.

  15. BurstMem: A High-Performance Burst Buffer System for Scientific Applications

    SciTech Connect (OSTI)

    Wang, Teng [Auburn University, Auburn, Alabama; Oral, H Sarp [ORNL; Wang, Yandong [Auburn University, Auburn, Alabama; Settlemyer, Bradley W [ORNL; Atchley, Scott [ORNL; Yu, Weikuan [Auburn University, Auburn, Alabama

    2014-01-01T23:59:59.000Z

    The growth of computing power on large-scale sys- tems requires commensurate high-bandwidth I/O system. Many parallel file systems are designed to provide fast sustainable I/O in response to applications soaring requirements. To meet this need, a novel system is imperative to temporarily buffer the bursty I/O and gradually flush datasets to long-term parallel file systems. In this paper, we introduce the design of BurstMem, a high- performance burst buffer system. BurstMem provides a storage framework with efficient storage and communication manage- ment strategies. Our experiments demonstrate that BurstMem is able to speed up the I/O performance of scientific applications by up to 8.5 on leadership computer systems.

  16. Mining and Reclamation Technology Symposium

    SciTech Connect (OSTI)

    None Available

    1999-06-24T23:59:59.000Z

    The Mining and Reclamation Technology Symposium was commissioned by the Mountaintop Removal Mining/Valley Fill Environmental Impact Statement (EIS) Interagency Steering Committee as an educational forum for the members of the regulatory community who will participate in the development of the EIS. The Steering Committee sought a balanced audience to ensure the input to the regulatory community reflected the range of perspectives on this complicated and emotional issue. The focus of this symposium is on mining and reclamation technology alternatives, which is one of eleven topics scheduled for review to support development of the EIS. Others include hydrologic, environmental, ecological, and socio-economic issues.

  17. Iowa State Mining and Mineral Resources Research Institute

    SciTech Connect (OSTI)

    Not Available

    1990-08-01T23:59:59.000Z

    This final report describes the activities of the Iowa State Mining and Mineral Resources Research Institute (ISMMRRI) at Iowa State University for the period July 1, 1989, to June 30, 1990. Activities include research in mining- and mineral-related areas, education and training of scientists and engineers in these fields, administration of the Institute, and cooperative interactions with industry, government agencies, and other research centers. During this period, ISMMRRI has supported research efforts to: (1) Investigate methods of leaching zinc from sphalerite-containing ores. (2) Study the geochemistry and geology of an Archean gold deposit and of a gold-telluride deposit. (3) Enchance how-quality aggregates for use in construction. (4) Pre-clean coal by triboelectric charging in a fluidized-bed. (5) Characterize the crystal/grain alignment during processing of yttrium-barium-copper-perovskite (1-2-3) superconductors. (5) Study the fluid inclusion properties of a fluorite district. (6) Study the impacts of surface mining on community planning. (7) Assess the hydrophobicity of coal and pyrite for beneficiation. (8) Investigate the use of photoacoustic absorption spectroscopy for monitoring unburnt carbon in the exhaust gas from coal-fired boilers. The education and training program continued within the interdepartmental graduate minor in mineral resources includes courses in such areas as mining methods, mineral processing, industrial minerals, extractive metallurgy, coal science and technology, and reclamation of mined land. In addition, ISMMRRI hosted the 3rd International Conference on Processing and Utilization of High-Sulfur Coals in Ames, Iowa. The Institute continues to interact with industry in order to foster increased cooperation between academia and the mining and mineral community.

  18. ITP Mining: Energy and Environmental Profile of the U.S. Mining...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy and Environmental Profile of the U.S. Mining Industry (December 2002) ITP Mining: Energy and Environmental Profile of the U.S. Mining Industry (December 2002) Cover,...

  19. Patterning of nanocrystalline diamond films for diamond microstructures useful in MEMS and other devices

    DOE Patents [OSTI]

    Gruen, Dieter M. (Downers Grove, IL); Busmann, Hans-Gerd (Bremen, DE); Meyer, Eva-Maria (Bremen, DE); Auciello, Orlando (Bolingbrook, IL); Krauss, Alan R. (late of Naperville, IL); Krauss, Julie R. (Naperville, IL)

    2004-11-02T23:59:59.000Z

    MEMS structure and a method of fabricating them from ultrananocrystalline diamond films having average grain sizes of less than about 10 nm and feature resolution of less than about one micron . The MEMS structures are made by contacting carbon dimer species with an oxide substrate forming a carbide layer on the surface onto which ultrananocrystalline diamond having average grain sizes of less than about 10 nm is deposited. Thereafter, microfabrication process are used to form a structure of predetermined shape having a feature resolution of less than about one micron.

  20. Australian Mining carries rare-earth-like iron release | The...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Australian Mining carries rare-earth-like iron release Australian Mining, the leading news source for the mining industry in Australia, carried a story on research Ames Lab...

  1. Abiotic Oxidation Rate of Chalcopyrite: Implications for Seafloor Mining

    E-Print Network [OSTI]

    Bilenker, Laura Danielle

    2011-01-01T23:59:59.000Z

    in Seawater: Implications for Mining Seafloor Hot Spring.American Institute of Mining, Metallurgical, and PetroleumImplications for Seafloor Mining A Thesis submitted in

  2. Data Mining Applied to Acoustic Bird Species Recognition

    E-Print Network [OSTI]

    Vilches, Erika; Escobar, Ivan A.; Vallejo, E E; Taylor, C E

    2006-01-01T23:59:59.000Z

    I. ; Frank, E. ; Data Mining: Practical Machine LearningData Mining Applied to Acoustic Bird Species Recognitionthe application of data mining techniques to the problem of

  3. abandoned mined lands: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  4. abandoned mined land: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  5. appalachian coal mining: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  6. abandoned mining sites: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  7. abandoned mining land: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  8. advance mining: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  9. asan mining district: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  10. COST AND SCHEDULE FOR DRILLING AND MINING UNDERGROUND TEST FACILITIES

    E-Print Network [OSTI]

    Lamb, D.W.

    2013-01-01T23:59:59.000Z

    SCHEDULE FOR DRILLING AND MINING UNDERGROUND TEST FACILITIEStimes are calculated for a mining and drilling progrilln toof cost and time to compl mining and core drilling for

  11. Mercury-Contaminated Hydraulic Mining Debris in San Francisco Bay

    E-Print Network [OSTI]

    Bouse, Robin M; Fuller, Christopher C; Luoma, Sam; Hornberger, Michelle I; Jaffe, Bruce E; Smith, Richard E

    2010-01-01T23:59:59.000Z

    Contaminated Hydraulic Mining Debris in San Francisco BayAbstract The hydraulic gold-mining process used during thecreated by hydraulic gold mining in the Sierra Nevada,

  12. MODELING OF STATIC MINING SUBSIDENCE IN A NONLINEAR MEDIUM

    E-Print Network [OSTI]

    Ratigan, J.L.

    2013-01-01T23:59:59.000Z

    for Static Evaluation of Mining Subsidence," Rep. No. LBL-6, 1981 MODELING OF STATIC MINING SUBSIDENCE IN A NONLINEAR11896 MODELING OF STATIC MINING SUBSIDENCE IN A NONLINEAR ~

  13. Surface Coal Mining Law (Missouri)

    Broader source: Energy.gov [DOE]

    This law aims to provide for the regulation of coal mining in order to minimize or prevent its adverse effects, protect the environment to the extent possible, protect landowner rights, and...

  14. Coal Mining Reclamation (North Dakota)

    Broader source: Energy.gov [DOE]

    The Reclamation Division of the Public Service Commission is tasked with administering the regulation of surface coal mining and reclamation. Specific regulations can be found in article 69-05.2 of...

  15. Privacy-preserving data mining

    E-Print Network [OSTI]

    Zhang, Nan

    2009-05-15T23:59:59.000Z

    In the research of privacy-preserving data mining, we address issues related to extracting knowledge from large amounts of data without violating the privacy of the data owners. In this study, we first introduce an integrated baseline architecture...

  16. Integer optimization in data mining

    E-Print Network [OSTI]

    Shioda, Romy, 1977-

    2003-01-01T23:59:59.000Z

    While continuous optimization methods have been widely used in statistics and data mining over the last thirty years, integer optimization has had very limited impact in statistical computation. Thus, our objective is to ...

  17. ITP Mining: Energy and Environmental Profile of the U.S. Mining...

    Broader source: Energy.gov (indexed) [DOE]

    with which human civilizations have been built. The United States Department of Energy and the National Mining Association are working in partnership to implement the Mining...

  18. Survey of nine surface mines in North America. [Nine different mines in USA and Canada

    SciTech Connect (OSTI)

    Hayes, L.G.; Brackett, R.D.; Floyd, F.D.

    1981-01-01T23:59:59.000Z

    This report presents the information gathered by three mining engineers in a 1980 survey of nine surface mines in the United States and Canada. The mines visited included seven coal mines, one copper mine, and one tar sands mine selected as representative of present state of the art in open pit, strip, and terrace pit mining. The purpose of the survey was to investigate mining methods, equipment requirements, operating costs, reclamation procedures and costs, and other aspects of current surface mining practices in order to acquire basic data for a study comparing conventional and terrace pit mining methods, particularly in deeper overburdens. The survey was conducted as part of a project under DOE Contract No. DE-AC01-79ET10023 titled The Development of Optimal Terrace Pit Coal Mining Systems.

  19. COST AND SCHEDULE FOR DRILLING AND MINING UNDERGROUND TEST FACILITIES

    E-Print Network [OSTI]

    Lamb, D.W.

    2013-01-01T23:59:59.000Z

    SHAFT SINKING IN-MINE DRILLiNG NEW MINE - 1500 M SURFACEORILUNG SHAFT SINKiNG FACIUTY DEVELOPMENT IN-MINE DRILLINGSURFACE DRILLING FACIUTY DEVELOPMENT IN-MINE DRILLING ~~NGM!

  20. Bio-inspired MEMS Pressure and Flow Sensors for Underwater Navigation and Object Imaging "

    E-Print Network [OSTI]

    for artificial lateral line applications," Master's thesis, Massachusetts Institute of Technology, September 2011 the biological neuromasts on the body of many fish. For instance, the blind cave fish, Astyanax mexicanus Kayak Testing: Commercial vs. MEMS Pitching Test Power Spectrum of Pitching Test A photograph of blind

  1. Multi-physical characterization of micro-contact materials for MEMS switches

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    on an innovative methodology early developed at NOVA MEMS is hereby presented. The technique exploits a commercial pairs of soft material (Au/Au contact), harder materials (Ru/Ru and Rh/Rh contacts) and mixed-reliability level required for further integration of these technologies in complex systems is currently a major

  2. Stresa, Italy, 26-28 April 2006 RECENT DEVELOPMENTS IN MEMS-BASED MICRO FUEL CELLS

    E-Print Network [OSTI]

    Boyer, Edmond

    Stresa, Italy, 26-28 April 2006 RECENT DEVELOPMENTS IN MEMS-BASED MICRO FUEL CELLS Tristan Pichonat ABSTRACT Micro fuel cells (µ-FC) represent promising power sources for portable applications. Today, one describes the latest developments of a new porous silicon- based miniature fuel cell. Using a silane grafted

  3. IEEE ELECTRON DEVICE LETTERS, VOL. 24, NO. 4, APRIL 2003 227 RF MEMS Switches Fabricated on

    E-Print Network [OSTI]

    Cetiner, Bedri A.

    with superior performance over con- ventional semiconductor devices [4]­[7]. Typically, RF MEMS switches-resistivity silicon wafers, gallium arsenide (GaAs) wafers, and quartz substrates using semiconductor Manuscript and surface planarization of wide metal lines prior to deposition of a metal membrane bridge, which poses

  4. Learn more: mems.duke.edu Our department works in areas

    E-Print Network [OSTI]

    Zhou, Pei

    .com/DukeEngineering youtube.com/DukeEngineering instagram.com/DukeEngineering pratt.duke.edu Area of employment for 2014 MELearn more: mems.duke.edu Our department works in areas that just might surprise you. Duke's Mechanical Engineering and Materials Science Department specializes in research areas including aerodynamics

  5. The application of nanosecond-pulsed laser welding technology in MEMS packaging with a shadow mask$

    E-Print Network [OSTI]

    Lin, Liwei

    The application of nanosecond-pulsed laser welding technology in MEMS packaging with a shadow mask wiring is not pre- ferred. A comprehensive review on laser welding was given in [6]. The laser welding of laser welding is to create the liquid pool by absorption of incident radiation, allow it to grow

  6. 3C-SiC Films on Si for MEMS Applications: Mechanical Properties , G. Kravchenko2

    E-Print Network [OSTI]

    Volinsky, Alex A.

    diamond tip. These results indicate that polycrystalline SiC thin films are attractive for MEMS. In addition, poly-crystalline 3C- SiC was also grown on (100)Si so that a comparison with monocrystaline 3C-SiC, also grown on (100)Si, could be made. The mechanical properties of single crystal and polycrystalline 3

  7. Grafting odorant binding proteins on diamond bio-MEMS R. Manai a,

    E-Print Network [OSTI]

    Boyer, Edmond

    . Beside, cantilevers based on polycrystalline diamond surfaces are very promising as chemical transducers. Here two methods were investigated for chemically grafting porcine OBPs onto polycrystalline diamond1 Grafting odorant binding proteins on diamond bio-MEMS R. Manai a, *, E. Scorsone a , L. Rousseau

  8. AN IMPLANTABLE ALL-PARYLENE LIQUID-IMPEDANCE BASED MEMS FORCE SENSOR

    E-Print Network [OSTI]

    Meng, Ellis

    . Specifically, in situ and in vivo measurement of interfacial forces exerted on tissue by chronically implantedAN IMPLANTABLE ALL-PARYLENE LIQUID-IMPEDANCE BASED MEMS FORCE SENSOR Christian A. Gutierrez1 ABSTRACT We present a new transducer paradigm based on the electrochemical impedance transduction

  9. Real-Time damage localization by means of MEMS sensors and use of wireless data transmission

    E-Print Network [OSTI]

    Shinozuka, Masanobu

    Real-Time damage localization by means of MEMS sensors and use of wireless data transmission such as water delivery networks are damaged, it is critical to pinpoint the location of the damage, to assess the extent of the damage, and to mitigate the damage in real-time. We propose a wireless sensor network

  10. MEMS-based fuel cells with integrated catalytic fuel processor and method thereof

    DOE Patents [OSTI]

    Jankowski, Alan F. (Livermore, CA); Morse, Jeffrey D. (Martinez, CA); Upadhye, Ravindra S. (Pleasanton, CA); Havstad, Mark A. (Davis, CA)

    2011-08-09T23:59:59.000Z

    Described herein is a means to incorporate catalytic materials into the fuel flow field structures of MEMS-based fuel cells, which enable catalytic reforming of a hydrocarbon based fuel, such as methane, methanol, or butane. Methods of fabrication are also disclosed.

  11. Electrostatic Operation and Curvature Modeling for a MEMS Flexible Film Actuator

    E-Print Network [OSTI]

    ," is a unique MEMS (MicroElectronic Mechanical System) actuator fabricated from polyimide and thin metal filmsHz). The device is comprised of a poly- imide/Au/polyimide structure in the flexible film portion of the actuator film portion. Due to stresses in the films caused by thermal expansion mismatch during the polyimide

  12. Calibration of an interfacial force microscope for MEMS metrology : FY08-09 activities.

    SciTech Connect (OSTI)

    Houston, Jack E.; Baker, Michael Sean; Crowson, Douglas A.; Mitchell, John Anthony; Moore, Nathan W.

    2009-10-01T23:59:59.000Z

    Progress in MEMS fabrication has enabled a wide variety of force and displacement sensing devices to be constructed. One device under intense development at Sandia is a passive shock switch, described elsewhere (Mitchell 2008). A goal of all MEMS devices, including the shock switch, is to achieve a high degree of reliability. This, in turn, requires systematic methods for validating device performance during each iteration of design. Once a design is finalized, suitable tools are needed to provide quality assurance for manufactured devices. To ensure device performance, measurements on these devices must be traceable to NIST standards. In addition, accurate metrology of MEMS components is needed to validate mechanical models that are used to design devices to accelerate development and meet emerging needs. Progress towards a NIST-traceable calibration method is described for a next-generation, 2D Interfacial Force Microscope (IFM) for applications in MEMS metrology and qualification. Discussed are the results of screening several suitable calibration methods and the known sources of uncertainty in each method.

  13. Building a DBMS on top of the JuxMem Grid Data-Sharing Service

    E-Print Network [OSTI]

    Building a DBMS on top of the JuxMem Grid Data-Sharing Service Abdullah Almousa Almaksour , Gabriel.antoniu@irisa.fr Abstract-- We claim that building a distributed DBMS on top of a general-purpose grid data-sharing service propose consists in providing the DBMS with a transparent, persistent and fault-tolerant access

  14. TiN for MEMS hotplate heaters J.F. Creemer1

    E-Print Network [OSTI]

    Technische Universiteit Delft

    TiN for MEMS hotplate heaters J.F. Creemer1 , P.M. Sarro2 , M. Laros2 , H. Schellevis2 , L, DIMES, ECTM, Mekelweg 4, 2628 CD Delft, Netherlands. Summary: Low-stress TiN has been investigated is required to protect the TiN against oxidation. Keywords: TiN thin films, micro heater, hot plate 1

  15. A 27 MHZ TEMPERATURE COMPENSATED MEMS OSCILLATOR WITH SUB-PPM INSTABILITY

    E-Print Network [OSTI]

    Ayazi, Farrokh

    A 27 MHZ TEMPERATURE COMPENSATED MEMS OSCILLATOR WITH SUB-PPM INSTABILITY Roozbeh Tabrizian with sub-ppm temperature instability based on a high-Q composite bulk acoustic wave (BAW) resonator transduced silicon resonator to compensate its negative temperature coefficient of frequency (TCF). Using

  16. An Analytical Solution to a MEMS Seek Time Model hongbo@cse.ucsc.edu

    E-Print Network [OSTI]

    Miller, Ethan L.

    times 10­20 times faster than hard drives, storage densities 10 times greater, and power consumption the surfaces relative to each other using MEMS actuators, each read/write head can access a region tips called tip arrays that are used to access data on a movable media sled. In a modern disk drive

  17. Integrated MEM Antenna System for Wireless Communications Bedri A. Cetiner, Luis Jofre*

    E-Print Network [OSTI]

    De Flaviis, Franco

    , Electrical and Computer Engineering Department, 2237 Engineering Gateway, Irvine, CA, 92697, USA * Technical antennas (having 50% bandwidth) sequentially addressed using low-loss RF-MEMS switches. The antennas advantages including broader bandwidth, better impedance matching, lower radiation losses and mutual coupling

  18. International Policy International Development

    E-Print Network [OSTI]

    Watson, Andrew

    Research Strategy 2006-2009 International Policy Energy Adaptation International Development Coasts Change Research. Our strategy builds upon our previous work on integrated assessment, energy, adaptation of time. In this spirit, the Centre reconfirms its vision statement: "The Tyndall Centre is the UK network

  19. Mining Unexpected SequentialMining Unexpected SequentialMining Unexpected SequentialMining Unexpected Sequential Patterns and Implication RulesPatterns and Implication RulesPatterns and Implication RulesPatterns and Implication Rules

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Mining Unexpected SequentialMining Unexpected SequentialMining Unexpected SequentialMining RulesPatterns and Implication Rules Dong (Haoyuan) Li LGI2P, École des Mines d'Alès, France Anne Laurent ABSTRACT As common criteria in data mining methods, the frequency-based interestingness measures provide

  20. AS A MINING ENGINEER Mining provides the raw materials and energy resources needed to sustain modern civilization. Mining Engineers

    E-Print Network [OSTI]

    Simons, Jack

    AS A MINING ENGINEER Mining provides the raw materials and energy resources needed to sustain modern civilization. Mining Engineers are trained to determine the safest most sustainable way to remove for energy and mineral resources. The average American consumes approximately 45,000 pounds of minerals

  1. ECML TextMining Workshop, Chemnitz, 1998 Evaluation of four clustering methods used in text mining

    E-Print Network [OSTI]

    Turenne, Nicolas

    ECML TextMining Workshop, Chemnitz, 1998 Evaluation of four clustering methods used in text mining according the real-world. Keywords: conceptual clustering ; data mining ; knowledge structuration an acute need in concept extraction and text mining. The paper presents an evaluation of four clustering

  2. Generic Pattern Mining via Data Mining Template Library Nilanjana De, Feng Gao, Paolo Palmerini

    E-Print Network [OSTI]

    Bystroff, Chris

    Generic Pattern Mining via Data Mining Template Library Nilanjana De, Feng Gao, Paolo Palmerini Department, Rensselaer Polytechnic Institute, Troy NY 12180 Abstract Frequent Pattern Mining (FPM) is a very powerful paradigm for mining informative and use- ful patterns in massive, complex datasets. In this paper

  3. Mercury Contamination from Hydraulic Placer-Gold Mining in the Dutch Flat Mining

    E-Print Network [OSTI]

    179 Mercury Contamination from Hydraulic Placer-Gold Mining in the Dutch Flat Mining District at historic gold mining sites represents a potential risk to human health and the environment. Elemental mercury (quicksilver) was used extensively for the recovery of gold at both placer and hardrock mines

  4. Data Mining Research: Opportunities and Challenges Data Mining Research: Opportunities and Challenges

    E-Print Network [OSTI]

    Grossman, Robert

    Data Mining Research: Opportunities and Challenges 1 Data Mining Research: Opportunities and Challenges A Report of three NSF Workshops on Mining Large, Massive, and Distributed Data* Robert Grossman, 1997 and February, 1998 to discuss the current state of the art of data mining and data intensive

  5. LLM Oil, Gas and Mining Law Module Information: Oil, Gas & Mining Environmental Law I and

    E-Print Network [OSTI]

    Evans, Paul

    LLM Oil, Gas and Mining Law Module Information: Oil, Gas & Mining Environmental Law I and Oil, Gas of the area of Oil, Gas &, Mining Environmental Law; 2. communicate complex legal concepts that apply within the area of Oil, Gas & Mining & Environmental Law to a high level of competence; and 3. deploy a highly

  6. "MINE YOUR OWN BUSINESS": USING PROCESS MINING TO TURN BIG DATA INTO REAL VALUE

    E-Print Network [OSTI]

    van der Aalst, Wil

    "MINE YOUR OWN BUSINESS": USING PROCESS MINING TO TURN BIG DATA INTO REAL VALUE Van der Aalst, Wil is to turn event data into valuable insights. Only process mining techniques directly relate event data-oriented analysis techniques (e.g., data mining and machines learning) typically focus on simple classification

  7. NU-MineBench: Understanding the Performance and Scalability Characteristics of Data Mining Algorithms

    E-Print Network [OSTI]

    Choudhary, Alok

    NU-MineBench: Understanding the Performance and Scalability Characteristics of Data Mining Clara. CA - 95052 pradeep.dubey@intel.com Abstract Data mining has become one of the most essential and distributed systems have provided abundant venues for improving the performance of data mining algorithms

  8. Data Analysis and Mining at NERSC

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mining Data Analysis and Mining microCTdani.jpg Data analysis techniques include post-processing (e.g., data statistics) of experimental datasets andor simulation output, as well...

  9. Oil, Gas, and Mining Leases (Nebraska)

    Broader source: Energy.gov [DOE]

    This section contains rules on oil, gas, and mining leases, and grants authority to the State of Nebraska and local governments to issue leases for oil and gas mining and exploration on their lands.

  10. South Carolina Mining Act (South Carolina)

    Broader source: Energy.gov [DOE]

    The South Carolina Mining Act seeks to offer the greatest practical degree of protection and restoration to usefulness, productivity, and scenic values of all SC lands and waters involved in mining...

  11. Data Mining and Knowledge Discovery: Practice Notes

    E-Print Network [OSTI]

    Novak, Petra Kralj

    1 Data Mining and Knowledge Discovery: Practice Notes Petra Kralj Novak Petra.Kralj.Novak@ijs.si and exam · 2013/1/15: Written exam, seminar proposal discussion · 2013/2/12: Data mining seminar

  12. Data Mining and Knowledge Discovery: Practice Notes

    E-Print Network [OSTI]

    Novak, Petra Kralj

    1 Data Mining and Knowledge Discovery: Practice Notes Petra Kralj Novak Petra.Kralj.Novak@ijs.si on Weka 3: Descriptive data mining ­ Discussion about seminars and exam · 2013/12/16: Written exam

  13. 1352 JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 19, NO. 6, DECEMBER 2010 Parylene-Based Electrochemical-MEMS Transducers

    E-Print Network [OSTI]

    Meng, Ellis

    on a microelectromechanical systems scanning mirror Wibool Piyawattanametha,1,2 Eric D. Cocker,1 Laurie D. Burns,1 Robert P. J on a microelectromechanical systems (MEMS) laser-scanning mirror. The microscope has a focusing motor and a micro

  14. On the application of the BGK kinetic model to the analysis of gas-structure interactions in MEMS

    E-Print Network [OSTI]

    Frangi, Attilio

    of simplifying hypotheses suited for moderate working frequencies per- mits the full scale 3D simulation of MEMS data in terms of forces exerted on the suspended shuttle is presented. Ó 2007 Elsevier Ltd. All rights

  15. A Survey on Mining Software Survey Presentation

    E-Print Network [OSTI]

    Bae, Doo-Hwan

    ­ Effort Estimation ­ Mining Aspects · Papers at a glance · Related Workshop · Available Resources of mining software archives to support, ­ the maintenance of software systems, ­ improve software designA Survey on Mining Software Archives Survey Presentation Jin Ung, Oh ­ 2007.07.11 #12;Contents

  16. Institut Mines-Tlcom EPOC : Energy Proportional

    E-Print Network [OSTI]

    Lefèvre, Laurent

    ? ? Renewable energy #12;Institut Mines-Télécom29/11/13 Green@Days Lille 28-29 Novembre 2013 Problem 5 time Workload Renewable energy ? ? regular electric #12;Institut Mines-Télécom29/11/13 Green@Days Lille 28Institut Mines-Télécom EPOC : Energy Proportional and Opportunistic Computing system 1 Labex Comin

  17. Error Mining on Dependency Trees Claire Gardent

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Error Mining on Dependency Trees Claire Gardent CNRS, LORIA, UMR 7503 Vandoeuvre-l`es-Nancy, F-l`es-Nancy, F-54600, France shashi.narayan@loria.fr Abstract In recent years, error mining approaches were propose an algorithm for mining trees and ap- ply it to detect the most likely sources of gen- eration

  18. ICPSR Summer Program, 2014 Data Mining

    E-Print Network [OSTI]

    Stine, Robert A.

    ICPSR Summer Program, 2014 Data Mining Tools for Exploring Big Data Robert Stine Department of Statistics Wharton School, University of Pennsylvania www-stat.wharton.upenn.edu/~stine Modern data mining a contribution. Rather than build a model that relates one or two experimental results to a response, data mining

  19. Proof Mining in Practice Philipp Gerhardy

    E-Print Network [OSTI]

    Gerhardy, Philipp

    Proof Mining in Practice Philipp Gerhardy April 14, 2008 Abstract In this paper, we present some aspects of a recent application of proof mining by J.Avigad, H.Towsner and the author. In this case study for the ergodic averages. Proof mining generally falls into two main categories: Establishing general metatheorems

  20. of Mining & www.mge.arizona.edu

    E-Print Network [OSTI]

    Holliday, Vance T.

    Department of Mining & Geological www.mge.arizona.edu EXPAND Tel: 520.621.6063 Fax: 520.621.8330 mgedept@email.arizona.edu YOUR CAREER ONLINE GRADUATE CERTIFICATE PROGRAM 15 UNITS MINE PRODUCTION & TECHNOLOGY #12;Department of Mining & Geological Engineering Contact: Sean Dessureault dessure

  1. Database Transposition for Constrained (Closed) Pattern Mining

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Database Transposition for Constrained (Closed) Pattern Mining Baptiste Jeudy1 and Fran¸cois Rioult-Normandie, France. francois.rioult@info.unicaen.fr Abstract. Recently, different works proposed a new way to mine). In this case, mining the "transposed" database runs through a smaller search space, and the Ga- lois connection

  2. Du Data Mining l'Apprentissage Statistique

    E-Print Network [OSTI]

    Besse, Philippe

    Du Data Mining à l'Apprentissage Statistique Philippe Besse Contenu : 1. Introduction 2. Risque et graphiques des scénarios Formation L'Oréal : 28 / 03 / 2014 #12;Introduction au data mining Apprentissage Mining Introduction Philippe Besse & B´eatrice Laurent INSA de Toulouse Institut de Math´ematiques INSA

  3. Data Mining for Scientific & Engineering Applications

    E-Print Network [OSTI]

    Kumar, Vipin

    Data Mining for Scientific & Engineering Applications Robert Grossman, Laboratory for Advanced Kumar, Army High Performance Research Center, University of Minnesota #12;Chapter 10 ­ Data Mining. Grossman, C. Kamath, V. Kumar Data Mining for Scientific and Engineering Applications Ch 10/ 3 Goals

  4. ICPSR Summer Program, 2013 Data Mining

    E-Print Network [OSTI]

    Stine, Robert A.

    ICPSR Summer Program, 2013 Data Mining Tools for Exploring Big Data Robert Stine Department of Statistics Wharton School, University of Pennsylvania www-stat.wharton.upenn.edu/~stine Modern data mining a contribution. Rather than build a model that relates one or two experimental results to a response, data mining

  5. Department of Geophysics Colorado School of Mines

    E-Print Network [OSTI]

    Department of Geophysics Colorado School of Mines Golden, CO 80401 http://www.geophysics of Geophysics Colorado School of Mines Golden, CO 80401 http://www.geophysics.mines.edu/cgem Defended: May 11 (Geophysics) On Original Copies Dr. Terence K. Young Professor and Head Department of Geophysics Approved

  6. Department of Geophysics Colorado School of Mines

    E-Print Network [OSTI]

    Department of Geophysics Colorado School of Mines Golden, CO 80401 http://www.geophysics of Geophysics Colorado School of Mines Golden, CO 80401 http://www.geophysics.mines.edu/cgem Defended: May 10 (Geophysics). Golden, Colorado Date May 15, 2006 Signed: on original copy Jeongmin Lee Signed: on original

  7. Department of Geophysics Colorado School of Mines

    E-Print Network [OSTI]

    Department of Geophysics Colorado School of Mines Golden, CO 80401 http://www.geophysics of Geophysics Colorado School of Mines Golden, CO 80401 http://www.geophysics.mines.edu/cgem Defended: September fulfillment of the requirements for the degree of Master of Science (Geophysics). Golden, Colorado Date

  8. Mining Binary Expressions: Applications and Toon Calders

    E-Print Network [OSTI]

    Antwerpen, Universiteit

    ,pareda}@uia.ua.ac.be Technical report TR0008, June 2000 Abstract In data mining, searching for frequent patterns is a common exponentially large, we use data mining techniques to avoid expo- nential execution times. We present results of the number of partial orders 22 B Example run of the algorithm 24 2 #12;1 Introduction In data mining

  9. Massively Parallel Data Mining Using Reconfigurable Hardware

    E-Print Network [OSTI]

    Chamberlain, Roger

    ]. The basic idea is to decompose the data mining oper- ation into two components. The low-level componentMassively Parallel Data Mining Using Reconfigurable Hardware: Approximate String Matching Qiong. Chamberlain, Ronald S. Indeck, Benjamin West, and Jason White, "Massively Parallel Data Mining Using

  10. ZART: A Multifunctional Itemset Mining Algorithm

    E-Print Network [OSTI]

    Boyer, Edmond

    independent, multi-purposed data mining platform, incorporating a rich collection of data mining algorithms, allowing a number of auxiliary operations for preparing and filtering data, and, for interpreting in data mining today. Generating strong association rules from frequent itemsets often results in a huge

  11. Mine roof geology information system

    SciTech Connect (OSTI)

    Peng, S.S.; Sasaoka, T.; Tang, D.X.; Wilson, Y.; Wilson, G.

    2005-05-01T23:59:59.000Z

    A project sponsored by the US Department of Energy under the Industry of Future (Mining) program was initiated five years ago. In this project a patented drill control unit (DCU) installed DIN. the J.H. Flecher & Co.'s roof bolter was used to record the drilling parameter for experiments conducted in the mines and laboratory. Today, the drilling parameters have been recorded for more than 1,000 roof bolt holes. This article summarizes the results to date including the methods for determining quantitatively the location of voids/fractures and estimation of roof rock strength from the recorded roof bolter drilling parameters. 8 figs., 2 tabs.

  12. "Dark Web: Exploring and Min-ing the Dark Side of the Web"

    E-Print Network [OSTI]

    Michelsen, Claus

    in the internationally re- nowned Dark Web project will be reviewed, including: deep/dark web spider- ing (web sitesTitle: "Dark Web: Exploring and Min- ing the Dark Side of the Web" Speaker: Director, Prof will review the emerging research in Terrorism Informatics based on a web mining perspective. Recent progress

  13. The pitting behavior of structural electrodeposits used in MEMS applications.

    SciTech Connect (OSTI)

    Wall, Frederick Douglas; Serna, Lysle M.; Martinez, Michael A.

    2004-10-01T23:59:59.000Z

    LIGA is an acronym for the German terms Lithographie, Galvanoformung, Abformung, which describe a microfabrication process for high aspect ratio, structural parts based on electrodeposition of a metal into a poly-methyl-methacrylate (PMMA) mold. LIGA produced parts have very high dimensional tolerances (on the order of a micron) and can vary in size from microns to centimeters. These properties make LIGA parts ideal for incorporation into MEMS devices or for other applications where strict tolerances must be met; however, functionality of the parts can only be maintained if they remain dimensionally stable throughout their lifetime. It follows that any form of corrosion attack (e.g., uniform dissolution, localized pitting, environmental cracking, etc.) cannot be tolerated. This presentation focuses on the pitting behavior of Ni electrodeposits, specifically addressing the influence of the following: grain structure, alloy composition, impurities, plating conditions, post plating processing (including chemical and thermal treatment), galvanic interactions and environment (aqueous vs. atmospheric). A small subset of these results is summarized. A typical LIGA part is shown in Figure 1. Due to the small size scale, electrochemical testing was performed using a capillary based test system. Although very small test areas can be probed with this system (e.g., Figure 2), typically capillaries on the order of 80 to 90 ?m's were used in the testing. All LIGA parts tested in the as-received condition had better pitting resistance than the high purity wrought Ni material used as a control. In the case of LIGA-Ni and LIGA-Ni-Mn, no detrimental effects were observed due to aging at 700C. Ni-S (approximately 500 ppm S), showed good as-received pitting behavior but decreased pitting resistance with thermal aging. Aged Ni-S showed dramatic increases in grain size (from single {micro}m's to 100's of {micro}m's), and significant segregation of S to the boundaries. The capillary test cell was used to measure pitting potentials at the boundaries and within grains (Figure 3) with the results clearly showing the lowered pit resistance being due to the S-rich boundaries. It is believed that the process used to release the LIGA parts from the Cu substrate acts as a pickling agent for the LIGA parts, resulting in removal of surface impurities and detrimental alloying additions. EIS data from freshly polished samples exposed to the release bath support this hypothesis; RP values for all LIGA materials and for wrought Ni, continuously increase during exposure. Mechanical polishing of LIGA parts prior to electrochemical testing consistently resulted in lowering the pitting potentials to a range bounded by Ni 201 and high purity Ni. The as-received vs. polished behavior also effects the galvanic interactions with noble metals. When as-produced material is coupled to Au, initially the LIGA material acts as the cathode, though eventually the behavior switches such that the LIGA becomes the anode. Overall, the LIGA produced Ni and Ni alloys examined in this work demonstrated pitting behavior similar to wrought Ni, only showing reduced resistance when specific metallurgical and environmental conditions were met.

  14. Modeled atmospheric radon concentrations from uranium mines

    SciTech Connect (OSTI)

    Droppo, J.G.

    1985-04-01T23:59:59.000Z

    Uranium mining and milling operations result in the release of radon from numerous sources of various types and strengths. The US Environmental Protection Agency (EPA) under the Clean Air Act, is assessing the health impact of air emissions of radon from underground uranium mines. In this case, the radon emissions may impact workers and residents in the mine vicinity. To aid in this assessment, the EPA needs to know how mine releases can affect the radon concentrations at populated locations. To obtain this type of information, Pacific Northwest Laboratory used the radon emissions, release characteristics and local meterological conditions for a number of mines to model incremental radon concentrations. Long-term, average, incremental radon concentrations were computed based on the best available information on release rates, plume rise parameters, number and locations of vents, and local dispersion climatology. Calculations are made for a model mine, individual mines, and multiple mines. Our approach was to start with a general case and then consider specific cases for comparison. A model underground uranium mine was used to provide definition of the order of magnitude of typical impacts. Then computations were made for specific mines using the best mine-specific information available for each mine. These case study results are expressed as predicted incremental radon concentration contours plotted on maps with local population data from a previous study. Finally, the effect of possible overlap of radon releases from nearby mines was studied by calculating cumulative radon concentrations for multiple mines in a region with many mines. The dispersion model, modeling assumptions, data sources, computational procedures, and results are documented in this report. 7 refs., 27 figs., 18 tabs.

  15. Speedy backfilling for old mines

    SciTech Connect (OSTI)

    Dyni, R.C. (Bureau of Mines, Philadelphia, PA (United States)); Burnett, M. (Burnett Associates, Inc., Farmingham, MA (United States))

    1993-09-01T23:59:59.000Z

    This article describes pneumatic equipment that can help fill the underground voids left by abandoned coal mines that threaten nearly half a million acres of densely populated urban areas in the US alone. In 1910, when coal was king in northeastern Pennsylvania, engineers built a 600 ft cut-and-cover tunnel to transport coal from a mine entrance to a rail siding in the town of Vandling. In December 1992, engineers filled it up. The tunnel, known as the Hillside Coal and Iron Slope, had been well designed and constructed. Where it crossed under a main road, the roof was reinforced by three concrete columns--protection against loads from trolley cars whose rails shared the road. In October 1991, a hole opened up in one of the town's roads, and a subsidence complaint brought investigators from the US Department of the Interior's Office of Surface Mining (OSM) in Wilkes Barre, Pa. The tunnel, which passes directly underneath several of Vandling's residential streets as well as State Highway 171, was declared a potential hazard. The OSM engineers decided that complete backfilling was necessary to support the tunnel roof. After remediating the original subsidence hole, they contacted the US Bureau of Mines and offered the tunnel as a field demonstration site for two new pneumatic backfilling devices. The demonstration, a success, completely filled the tunnel in only 23 working days.

  16. Robot to the Mine Rescue

    Broader source: Energy.gov [DOE]

    To increase the speed of rescue efforts, scientists and engineers at the Energy Department’s Sandia National Laboratories recently developed a new robot, called the Gemini-Scout Mine Rescue Robot, that quickly finds dangers and provides relief to trapped miners.

  17. Corner-cutting mining assembly

    DOE Patents [OSTI]

    Bradley, J.A.

    1981-07-01T23:59:59.000Z

    This invention resulted from a contract with the United States Department of Energy and relates to a mining tool. More particularly, the invention relates to an assembly capable of drilling a hole having a square cross-sectional shape with radiused corners. In mining operations in which conventional auger-type drills are used to form a series of parallel, cylindrical holes in a coal seam, a large amount of coal remains in place in the seam because the shape of the holes leaves thick webs between the holes. A higher percentage of coal can be mined from a seam by a means capable of drilling holes having a substantially square cross section. It is an object of this invention to provide an improved mining apparatus by means of which the amount of coal recovered from a seam deposit can be increased. Another object of the invention is to provide a drilling assembly which cuts corners in a hole having a circular cross section. These objects and other advantages are attained by a preferred embodiment of the invention.

  18. Corner-cutting mining assembly

    DOE Patents [OSTI]

    Bradley, John A. (San Antonio, TX)

    1983-01-01T23:59:59.000Z

    A mining assembly includes a primary rotary cutter mounted on one end of a support shaft and four secondary rotary cutters carried on the same support shaft and positioned behind the primary cutters for cutting corners in the hole cut by the latter.

  19. Mining into the new millennium

    SciTech Connect (OSTI)

    Buchsbaum, L.

    2009-06-15T23:59:59.000Z

    After more than 3 years of production and a billion tons of coal shipped, Foundation Coal West, a subsidiary of Foundation Coal Holding Inc., continues to operate two of the original surface mines in Wyoming's Powder River Basin. The article describes equipment (conveyors, trucks, surface miners etc.) deployed at Belle Ayr and Eagle Butte PRB operations. 3 photos.

  20. Data Mining: Concepts and Techniques

    E-Print Network [OSTI]

    Geldenhuys, Jaco

    1 Data Mining: Concepts and Techniques (3rd ed.) -- Chapter 3 -- Jiawei Han, Micheline Kamber. All rights reserved. #12;2013/08/12 2 #12;33 Chapter 3: Data Preprocessing n Data Preprocessing: An Overview n Data Quality n Major Tasks in Data Preprocessing n Data Cleaning n Data Integration n Data

  1. Semi autonomous mine detection system

    SciTech Connect (OSTI)

    Douglas Few; Roelof Versteeg; Herman Herman

    2010-04-01T23:59:59.000Z

    CMMAD is a risk reduction effort for the AMDS program. As part of CMMAD, multiple instances of semi autonomous robotic mine detection systems were created. Each instance consists of a robotic vehicle equipped with sensors required for navigation and marking, a countermine sensors and a number of integrated software packages which provide for real time processing of the countermine sensor data as well as integrated control of the robotic vehicle, the sensor actuator and the sensor. These systems were used to investigate critical interest functions (CIF) related to countermine robotic systems. To address the autonomy CIF, the INL developed RIK was extended to allow for interaction with a mine sensor processing code (MSPC). In limited field testing this system performed well in detecting, marking and avoiding both AT and AP mines. Based on the results of the CMMAD investigation we conclude that autonomous robotic mine detection is feasible. In addition, CMMAD contributed critical technical advances with regard to sensing, data processing and sensor manipulation, which will advance the performance of future fieldable systems. As a result, no substantial technical barriers exist which preclude – from an autonomous robotic perspective – the rapid development and deployment of fieldable systems.

  2. Mining Scientific Data Naren Ramakrishnan

    E-Print Network [OSTI]

    Southern California, University of

    -scale data repositories. Advances in networking technology have en- abled communication of large volumesMining Scientific Data Naren Ramakrishnan Department of Computer Science Virginia Tech, VA 24061 rapid advances in high performance computing and tools for data acquisition in a variety of scientific

  3. Image Mining: Detecting Deforestation Patterns

    E-Print Network [OSTI]

    Camara, Gilberto

    54 Chapter IV Image Mining: Detecting Deforestation Patterns Through Satellites Marcelino Pereira to analyze satellite images and extract knowledge from this kind of data. The Amazonia deforestation problem of change on deforested areas of Amazonia. The purpose of the authors is to present relevant technologies

  4. Mine locations: Kazakhstan

    SciTech Connect (OSTI)

    Perry, Bradley A [Los Alamos National Laboratory

    2008-01-01T23:59:59.000Z

    Upon accepting this internship at Los Alamos National Laboratory, I was excited but a bit nervous because I was placed into a field I knew nothing about and did not incorporate my mechanical engineering background. However, I stayed positive and realized that experience and education can come in many forms and that this would be a once in a lifetime opportunity. The EES-II Division (which stands for Earth and Environmental Sciences, Geophysics division) concentrates on several topics, including Nuclear Treaty Verification Seismology. The study of this is extremely important in order to monitor countries that have nuclear capability and make sure they follow the rules of the international comprehensive nuclear test ban treaty. Seismology is only one aspect of this monitoring and EES-II works diligently with many other groups here at Los Alamos and across the world.

  5. Bureau of mines cost estimating system handbook (in two parts). 1. Surface and underground mining

    SciTech Connect (OSTI)

    Not Available

    1987-01-01T23:59:59.000Z

    The handbook provides a convenient costing procedure based on the summation of the costs for unit processes required in any particular mining or mineral processing operation. The costing handbook consists of a series of costing sections, each corresponding to a specific mining unit process. Contained within each section is the methodology to estimate either the capital or operating cost for that unit process. The unit process sections may be used to generate, in January 1984 dollars, costs through the use of either costing curves or formulae representing the prevailing technology. Coverage for surface mining includes dredging, quarrying, strip mining, and open pit mining. The underground mining includes individual development sections for drifting, raising, shaft sinking, stope development, various mining methods, underground mine haulage, general plant, and underground mine administrative cost.

  6. Solution-verified reliability analysis and design of bistable MEMS using error estimation and adaptivity.

    SciTech Connect (OSTI)

    Eldred, Michael Scott; Subia, Samuel Ramirez; Neckels, David; Hopkins, Matthew Morgan; Notz, Patrick K.; Adams, Brian M.; Carnes, Brian; Wittwer, Jonathan W.; Bichon, Barron J.; Copps, Kevin D.

    2006-10-01T23:59:59.000Z

    This report documents the results for an FY06 ASC Algorithms Level 2 milestone combining error estimation and adaptivity, uncertainty quantification, and probabilistic design capabilities applied to the analysis and design of bistable MEMS. Through the use of error estimation and adaptive mesh refinement, solution verification can be performed in an automated and parameter-adaptive manner. The resulting uncertainty analysis and probabilistic design studies are shown to be more accurate, efficient, reliable, and convenient.

  7. Experimental study of the residual stress-induced self-assembly of MEMS structures during deposition

    E-Print Network [OSTI]

    Kim, Sang-Hyun

    2005-11-01T23:59:59.000Z

    three layers (b doped Si, Ge, B doped Si) to deform (or ?roll up?) into cylinders with radii of curvature from 0.3 to 2 micrometers. 9 It would be useful if intrinsic stresses could be used to enable a structure to assemble itself during processing... of [29]. 10 II. ANALYTICAL MODELING The possibility of usefully using residual (or intrinsic) stresses as a means of self- assembling MEMS during material deposition is analytically investigated. A. Self-Assembly and Residual Stress Suppose...

  8. The Sandia MEMS Passive Shock Sensor : FY08 testing for functionality, model validation, and technology readiness.

    SciTech Connect (OSTI)

    Walraven, Jeremy Allen; Blecke, Jill; Baker, Michael Sean; Clemens, Rebecca C.; Mitchell, John Anthony; Brake, Matthew Robert; Epp, David S.; Wittwer, Jonathan W.

    2008-10-01T23:59:59.000Z

    This report summarizes the functional, model validation, and technology readiness testing of the Sandia MEMS Passive Shock Sensor in FY08. Functional testing of a large number of revision 4 parts showed robust and consistent performance. Model validation testing helped tune the models to match data well and identified several areas for future investigation related to high frequency sensitivity and thermal effects. Finally, technology readiness testing demonstrated the integrated elements of the sensor under realistic environments.

  9. MEMS Hotplates with TiN as a Heater Material J.F. Creemer1

    E-Print Network [OSTI]

    Technische Universiteit Delft

    MEMS Hotplates with TiN as a Heater Material J.F. Creemer1 , W. van der Vlist2 , C.R. de Boer2 , H investigated as a heater material for hotplates and microreactors. TiN is CMOS compatible, and has a higher melting point (2950 ºC) than conventional heaters of Pt and poly-Si. For the first time, TiN is tested

  10. MEMS Lubrication by In-Situ Tribochemical Reactions From the Vapor Phase.

    SciTech Connect (OSTI)

    Dugger, Michael T.; Asay, David B.; Kim, Seong H.

    2008-01-01T23:59:59.000Z

    Vapor Phase Lubrication (VPL) of silicon surfaces with pentanol has been demonstrated. Two potential show stoppers with respect to application of this approach to real MEMS devices have been investigated. Water vapor was found to reduce the effectiveness of VPL with alcohol for a given alcohol concentration, but the basic reaction mechanism observed in water-free environments is still active, and devices operated much longer in mixed alcohol and water vapor environments than with chemisorbed monolayer lubricants alone. Complex MEMS gear trains were successfully lubricated with alcohol vapors, resulting in a factor of 104 improvement in operating life without failure. Complex devices could be made to fail if operated at much higher frequencies than previously used, and there is some evidence that the observed failure is due to accumulation of reaction products at deeply buried interfaces. However, if hypothetical reaction mechanisms involving heated surfaces are valid, then the failures observed at high frequency may not be relevant to operation at normal frequencies. Therefore, this work demonstrates that VPL is a viable approach for complex MEMS devices in conventional packages. Further study of the VPL reaction mechanisms are recommended so that the vapor composition may be optimized for low friction and for different substrate materials with potential application to conventionally fabricated, metal alloy parts in weapons systems. Reaction kinetics should be studied to define effective lubrication regimes as a function of the partial pressure of the vapor phase constituent, interfacial shear rate, substrate composition, and temperature.

  11. Ultra-lightweight telescope with MEMS adaptive optic for distortion correction.

    SciTech Connect (OSTI)

    Spahn, Olga Blum; Cowan, William D.; Shaw, Michael J.; Adams, David Price; Sweatt, William C.; Dagel, Daryl James; Grine, Alejandro J.; Mani, Seethambal S.; Resnick, Paul James; Gass, Fawn Renee; Grossetete, Grant David

    2004-12-01T23:59:59.000Z

    Recent world events have underscored the need for a satellite based persistent global surveillance capability. To be useful, the satellite must be able to continuously monitor objects the size of a person anywhere on the globe and do so at a low cost. One way to satisfy these requirements involves a constellation of satellites in low earth orbit capable of resolving a spot on the order of 20 cm. To reduce cost of deployment, such a system must be dramatically lighter than a traditional satellite surveillance system with a high spatial resolution. The key to meeting this requirement is a lightweight optics system with a deformable primary and secondary mirrors and an adaptive optic subsystem correction of wavefront distortion. This proposal is concerned with development of MEMS micromirrors for correction of aberrations in the primary mirror and improvement of image quality, thus reducing the optical requirements on the deployable mirrors. To meet this challenge, MEMS micromirrors must meet stringent criteria on their performance in terms of flatness, roughness and resolution of position. Using Sandia's SUMMIT foundry which provides the world's most sophisticated surface MEMS technology as well as novel designs optimized by finite element analysis will meet severe requirements on mirror travel range and accuracy.

  12. International journal of Rock Mechanics 81 Mining Sciences

    E-Print Network [OSTI]

    2013-06-22T23:59:59.000Z

    Jun 22, 2013 ... of gravity, and z is the unit gravitational director vector. The conservation equation of ... and COZ-rich vapor. The nonlinearities from ..... improvement of ?uid recovery estimations in reservoir engineering. In: Vouille G, Berest P, ...

  13. international journal of rock mechanics and mining sciences

    E-Print Network [OSTI]

    Elsevier accepts video material and animation sequences to support and enhance ... Authors who have video or animation files that they wish to submit with their ...

  14. for International Journal of Rock Mechanics and Mining Sciences ...

    E-Print Network [OSTI]

    128

    2013-05-06T23:59:59.000Z

    May 3, 2013 ... We model fractures in fluid-saturated poroelastic materials. We analize ... and dispersion of the fast modes (mesoscopic loss). A poroelastic ..... layered fluid and gas saturated sediments, Geophysics, 62, 1867-1878, 1997.

  15. WIRELESS MINE-WIDE TELECOMMUNICATIONS TECHNOLOGY

    SciTech Connect (OSTI)

    Zvi H. Meiksin

    2004-03-01T23:59:59.000Z

    A comprehensive mine-wide, two-way wireless voice and data communication system for the underground mining industry was developed. The system achieves energy savings through increased productivity and greater energy efficiency in meeting safety requirements within mines. The mine-wide system is comprised of two interfaced subsystems: a through-the-earth communications system and an in-mine communications system. The mine-wide system permits two-way communication among underground personnel and between underground and surface personnel. The system was designed, built, and commercialized. Several systems are in operation in underground mines in the United States. The use of these systems has proven they result in considerable energy savings. A system for tracking the location of vehicles and people within the mine was also developed, built and tested successfully. Transtek's systems are being used by the National Institute of Occupational Safety and Health (NIOSH) in their underground mine rescue team training program. This project also resulted in a spin-off rescue team lifeline and communications system. Furthermore, the project points the way to further developments that can lead to a GPS-like system for underground mines allowing the use of autonomous machines in underground mining operations, greatly reducing the amount of energy used in these operations. Some products developed under this program are transferable to applications in fields other than mining. The rescue team system is applicable to use by first responders to natural, accidental, or terrorist-caused building collapses. The in-mine communications system can be installed in high-rise buildings providing in-building communications to security and maintenance personnel as well as to first responders.

  16. Frequency stabilization in nonlinear MEMS and NEMS oscillators

    DOE Patents [OSTI]

    Lopez, Omar Daniel; Antonio, Dario

    2014-09-16T23:59:59.000Z

    An illustrative system includes an amplifier operably connected to a phase shifter. The amplifier is configured to amplify a voltage from an oscillator. The phase shifter is operably connected to a driving amplitude control, wherein the phase shifter is configured to phase shift the amplified voltage and is configured to set an amplitude of the phase shifted voltage. The oscillator is operably connected to the driving amplitude control. The phase shifted voltage drives the oscillator. The oscillator is at an internal resonance condition, based at least on the amplitude of the phase shifted voltage, that stabilizes frequency oscillations in the oscillator.

  17. SAND AND GRAVEL MINING IN COLORADO RIPARIAN HABITATS

    E-Print Network [OSTI]

    Reclamation Specialist Colorado Division of Mined Land Reclamation 723 Centennial Building 1313 Sherman Reclamation Board (MLRB) administers the Colo rado Mined Land Reclamation Act of 1976. This law requires types of mining including sand and gravel mining. The Mined Land Reclamation Division (MLRD

  18. Data mining and visualization techniques

    DOE Patents [OSTI]

    Wong, Pak Chung (Richland, WA); Whitney, Paul (Richland, WA); Thomas, Jim (Richland, WA)

    2004-03-23T23:59:59.000Z

    Disclosed are association rule identification and visualization methods, systems, and apparatus. An association rule in data mining is an implication of the form X.fwdarw.Y where X is a set of antecedent items and Y is the consequent item. A unique visualization technique that provides multiple antecedent, consequent, confidence, and support information is disclosed to facilitate better presentation of large quantities of complex association rules.

  19. ITP Mining: Energy and Environmental Profile of the U.S. Mining...

    Broader source: Energy.gov (indexed) [DOE]

    Virtually all ore was concentrated before shipment. Nine mines operated by five companies accounted for 99 percent of production. 1 4.1.1.1 Surface Mining When the iron...

  20. Autonomy and operator-assistance technologies optimize mining processes and mining equipment operation.

    E-Print Network [OSTI]

    Gupta, Abhinav

    operation. · Drills, miners and shearers are guided with laser precision for maximum extraction from the ore#12;· Autonomy and operator-assistance technologies optimize mining processes and mining equipment

  1. Legacy of historic mining and water quality in a heavily mined Scottish river catchment 

    E-Print Network [OSTI]

    Haunch, Simon

    2013-11-28T23:59:59.000Z

    Mine abandonment and the discharge of contaminated mine water is recognised globally as a major source of surface water and groundwater pollution. Contamination generally arises from the oxidation of sulphide minerals, ...

  2. Coal bunkers in underground mines

    SciTech Connect (OSTI)

    Polak, J.; Zegzulka, J. [VSB-Technical Univ., Ostrava (Czech Republic)

    1996-12-31T23:59:59.000Z

    In spite of the technical progress in the application of face technological equipment, the fluctuation of its output has been still considerable. A coal clearance system can be on one hand overloaded by production peaks and on the other hand its stoppages unfavorably influence production of faces. It has been proved that the most effective coal conveying system incorporates surge bunkers to eliminate the above mentioned problems. The surge bunkers have been used in the Czech mines since the middle of the sixties. There were 17 bunkers with an average capacity of 200 m{sup 3} in the biggest Czech coal mine basin OKD in 1967. Presently the number of bunkers has increased to 66 with a total capacity of 40,000 m{sup 3}. It represents the possibility of storing 56% of the daily OKD running of mine output. Two thirds of the number are gate bunkers with an average capacity of 540 m{sup 3} and the rest are skip ones with an average capacity of 740 m{sup 3}, situated at the shaft side.

  3. Injury experience in stone mining, 1992

    SciTech Connect (OSTI)

    Not Available

    1994-05-01T23:59:59.000Z

    This Mine Safety and Health Administration (MSHA) informational report reviews in detail the occupational injury and illness experience of stone mining in the United States for 1992. Data reported by operators of mining establishments concerning work injuries are summarized by work location, accident classification, part of body injured, nature of injury, occupation, and principal type of mineral. Related information on employment, worktime, and operating activity also is presented. Data reported by independent contractors performing certain work at mining locations are depicted separately in this report. For ease of comparison with other metal and nonmetallic mineral mining industries and with coal mining, summary reference tabulations are included at the end of both the operator and the contractor sections of this report.

  4. Colorado School of Mines Graduate Bulletin 1999-2000 1 School of Mines

    E-Print Network [OSTI]

    is for your use as a source of continuing reference. Please save it. Published by Colorado School of Mines

  5. High-G testing of MEMS mechanical non-volatile memory and silicon re-entry switch.

    SciTech Connect (OSTI)

    Baker, Michael Sean; Pohl, Kenneth Roy

    2005-10-01T23:59:59.000Z

    Two different Sandia MEMS devices have been tested in a high-g environment to determine their performance and survivability. The first test was performed using a drop-table to produce a peak acceleration load of 1792 g's over a period of 1.5 ms. For the second test the MEMS devices were assembled in a gun-fired penetrator and shot into a cement target at the Army Waterways Experiment Station in Vicksburg Mississippi. This test resulted in a peak acceleration of 7191 g's for a duration of 5.5 ms. The MEMS devices were instrumented using the MEMS Diagnostic Extraction System (MDES), which is capable of driving the devices and recording the device output data during the high-g event, providing in-flight data to assess the device performance. A total of six devices were monitored during the experiments, four mechanical non-volatile memory devices (MNVM) and two Silicon Reentry Switches (SiRES). All six devices functioned properly before, during, and after each high-g test without a single failure. This is the first known test under flight conditions of an active, powered MEMS device at Sandia.

  6. Intelligent Simulation Tools for Mining Large Scienti c Data Sets 1 Intelligent Simulation Tools for Mining

    E-Print Network [OSTI]

    Bailey-Kellogg, Chris

    Intelligent Simulation Tools for Mining Large Scienti#12;c Data Sets 1 Intelligent Simulation Tools for Mining Large Scienti#12;c Data Sets Feng ZHAO Xerox Palo Alto Research Center 3333 Coyote Hill Road, Palo. Keywords Intelligent simulation, Scienti#12;c data mining, Qualitative reasoning, Reasoning about physical

  7. CHEN, LOY, GONG, XIANG: FEATURE MINING FOR LOCALISED CROWD COUNTING 1 Feature Mining for Localised Crowd

    E-Print Network [OSTI]

    Gong, Shaogang

    CHEN, LOY, GONG, XIANG: FEATURE MINING FOR LOCALISED CROWD COUNTING 1 Feature Mining for Localised Crowd Counting Ke Chen1 cory@eecs.qmul.ac.uk Chen Change Loy2 ccloy@visionsemantics.com Shaogang Gong1 in print or electronic forms. #12;2 CHEN, LOY, GONG, XIANG: FEATURE MINING FOR LOCALISED CROWD COUNTING

  8. Data Mining: Concepts and TechniquesFebruary 19, 2008 1 Data Mining

    E-Print Network [OSTI]

    Raghavan, Vijay

    Data Mining: Concepts and TechniquesFebruary 19, 2008 1 Data Mining: Concepts and Techniques.cs.uiuc.edu/~hanj ©2006 Jiawei Han and Micheline Kamber, All rights reserved #12;Data Mining: Concepts and TechniquesFebruary 19, 2008 2 Chapter 2: Data Preprocessing Why preprocess the data? Descriptive data summarization

  9. Climate VISION: Private Sector Initiatives: Mining: Resources...

    Office of Scientific and Technical Information (OSTI)

    Technical Information Publications Case Studies Publications The Mining Industry Climate Action Plan (MICAP) (PDF 308 KB) Download Acrobat Reader MICAP focuses on carbon dioxide...

  10. Climate VISION: Private Sector Initiatives: Mining: Resources...

    Office of Scientific and Technical Information (OSTI)

    Outreach Program (CMOP) is a voluntary program aimed at reducing methane emissions from coal mining activities. Our mission is to promote the profitable recovery and use of coal...

  11. Climate VISION: Private Sector Initiatives: Mining: Resources...

    Office of Scientific and Technical Information (OSTI)

    process on the most significant and timely issues that impact our ability to locate, permit, mine, process, transport, and utilize the nation's vast coal and mineral resources...

  12. Climate VISION: Private Sector Initiatives: Mining: Technology...

    Office of Scientific and Technical Information (OSTI)

    Technology Pathways As part of the mining vision process, industry develops technology roadmaps to identify critical pathways for the R&D needed to reach their goals. These...

  13. College of Engineering MNG Mining Engineering

    E-Print Network [OSTI]

    MacAdam, Keith

    (Concurrent), PHY 232, engineering standing. MNG 302 MINERALS PROCESSING LABORATORY. (1) ApplicationCollege of Engineering MNG Mining Engineering KEY: # = new course * = course changed = course ENGINEERING. (1) Orientationtotheminingengineeringprofession

  14. Interstate Mining Compact Commission (multi-state)

    Broader source: Energy.gov [DOE]

    The Interstate Mining Compact is a multi-state governmental agency / organization that represents the natural resource and related environmental protection interests of its member states. Currently...

  15. Injury experience in coal mining, 1991

    SciTech Connect (OSTI)

    Not Available

    1991-12-31T23:59:59.000Z

    This Mine Safety and Health Administration (MSHA) informational report reviews in detail the occupational injury and illness experience of coal mining in the United States for 1991. Data reported by operators of mining establishments concerning work injuries are summarized by work location, accident classification, part of body injured, nature of injury, occupation, and anthracite or bituminous coal. Related information on employment, worktime, and operating activity also is presented. Data reported by independent contractors performing certain work at mining locations are depicted separately in this report. For ease of comparison between coal mining and the metal and nonmetal mineral mining industries, summary reference tabulations are included at the end of both the operator and the contractor sections of this report. Data used in compiling this report were reported by operators of coal mines and preparation plants on a mandatory basis as required under the Federal Mine Safety and Health Act of 1977, Public Law 91-173,as amended by Public Law 95-164. Since January 1, 1978, operators of mines or preparation plants or both which are subject to the Act have been required under 30 CFR, Part 50, to submit reports of injuries, occupational illnesses, and related data.

  16. Equipment Selection for Surface Mining: A Review

    E-Print Network [OSTI]

    Christina Burt

    2013-04-16T23:59:59.000Z

    Apr 16, 2013 ... Abstract: One of the challenging problems for surface mining operation optimization is choosing the optimal truck and loader fleet. This problem ...

  17. The LSST Data Mining Research Agenda

    E-Print Network [OSTI]

    K. D. Borne; J. Becla; I. Davidson; A. Szalay; J. A. Tyson

    2008-11-02T23:59:59.000Z

    We describe features of the LSST science database that are amenable to scientific data mining, object classification, outlier identification, anomaly detection, image quality assurance, and survey science validation. The data mining research agenda includes: scalability (at petabytes scales) of existing machine learning and data mining algorithms; development of grid-enabled parallel data mining algorithms; designing a robust system for brokering classifications from the LSST event pipeline (which may produce 10,000 or more event alerts per night); multi-resolution methods for exploration of petascale databases; indexing of multi-attribute multi-dimensional astronomical databases (beyond spatial indexing) for rapid querying of petabyte databases; and more.

  18. Mining, Using and Maintaining Source Statistics for Adaptive Data Integration

    E-Print Network [OSTI]

    Kambhampati, Subbarao

    -Objective Optimization, Statistics Mining, Incremental Maintenance 1. INTRODUCTION The availability of structuredMining, Using and Maintaining Source Statistics for Adaptive Data Integration Jianchun Fan a framework for effectively mining multiple types of statistics including source coverage statistics, inter

  19. Text mining for user perspectives on the physical workplace

    E-Print Network [OSTI]

    Goins, John; Moezzi, Mithra

    2011-01-01T23:59:59.000Z

    Goins, John (2011) 'Text mining for occupant perspectives onGoins, John (2011) 'Text mining for occupant perspectives onGoins, John (2011) 'Text mining for occupant perspectives on

  20. Integrated network construction using event based text mining

    E-Print Network [OSTI]

    Gent, Universiteit

    Integrated network construction using event based text mining Yvan Saeys, Sofie Van Landeghem numerous interactions between biological entities. Text mining techniques have been increasingly useful mining in the systems biology field has been restricted mostly to the discovery of protein

  1. Data Mining and Internet Profiling: Emerging Regulatory and Technological Approaches

    E-Print Network [OSTI]

    Schwartz, Paul M.; Lee, Ronald D.; Rubinstein, Ira

    2008-01-01T23:59:59.000Z

    of consensus safeguards around government data mining tocommercial data mining, the extent and speed of ad- funded2/19/2008 3:00:00 PM Data Mining and Internet Profiling:

  2. Shared State for Distributed Interactive Data Mining Applications

    E-Print Network [OSTI]

    Dwarkadas, Sandhya

    Shared State for Distributed Interactive Data Mining Applications #3; Srinivasan Parthasarathy, 2001 Abstract Distributed data mining applications involving user interaction are now fea- sible due and eval- uates a system for sharing state among such interactive distributed data mining applications

  3. Data Mining for Improving Health-Care Resource Deployment

    E-Print Network [OSTI]

    He, Nannan

    2014-01-01T23:59:59.000Z

    a comparison of three data mining methods. ArtificialE. F. (2011). Data Mining:Practical Machine Learning ToolsHan, M. K. (2012). Data Mining:Concepts and Techiniques.

  4. Planning for Mining Operations with Time and Resource Constraints

    E-Print Network [OSTI]

    Nir Lipovetzky

    2014-02-05T23:59:59.000Z

    Feb 5, 2014 ... Abstract: We study a daily mine planning problem where, given a set of blocks we wish to mine, our task is to generate a mining sequence for ...

  5. Software Escalation Prediction with Data Mining Tilmann Bruckhaus

    E-Print Network [OSTI]

    Ling, Charles X.

    Software Escalation Prediction with Data Mining Tilmann Bruckhaus Customer Network Services Sun (EP) is to avoid such escalations from known product defects using data mining technology [1, 2 is then augmented within the SPSS Clementine data-mining

  6. Shape Memory Alloy and Elastomer Composite MEMS Actuators P.D. Fallon, A.P. Gerratt, B.P. Kierstead, R.D. White

    E-Print Network [OSTI]

    White, Robert D.

    Shape Memory Alloy and Elastomer Composite MEMS Actuators P.D. Fallon, A.P. Gerratt, B.P. Kierstead A process for fabrication of shape memory alloy MEMS actuators on a elastomeric polymer substrate is described. These actuators are designed for use on innovative soft body robots. Patterned shape memory alloy

  7. Release of MEMS devices with hard-baked polyimide sacrificial Javaneh Boroumand Azad, Imen Rezadad, Janardan Nath, Evan Smith, Robert E. Peale

    E-Print Network [OSTI]

    Peale, Robert E.

    Release of MEMS devices with hard-baked polyimide sacrificial layer Javaneh Boroumand Azad, Imen, Orlando, FL, USA 32816 ABSTRACT Removal of polyimides used as sacrificial layer in fabricating MEMS-step processing. We consider the specific commercial co-developable polyimide ProLift 100 (Brewer Science

  8. Hybrid connection of RF MEMS and SMT components in an impedance tuner Mehmet Unlu , Kagan Topalli, Halil Ibrahim Atasoy, Simsek Demir, Ozlem Aydin Civi, Tayfun Akin

    E-Print Network [OSTI]

    Akin, Tayfun

    Hybrid connection of RF MEMS and SMT components in an impedance tuner Mehmet Unlu Ã, Kagan Topalli Switch SMT Hybrid a b s t r a c t This paper presents a systematic construction of a model for a hybrid connected RF MEMS and SMT components in a reconfigurable impedance tuner. The double stub hybrid impedance

  9. Corresponding author: Shi-Chune Yao, Email: scyao@cmu.edu, Paper number: HT-12-1144. 1 Design and Evaluation of a MEMS-Based Stirling Microcooler

    E-Print Network [OSTI]

    McGaughey, Alan

    and Evaluation of a MEMS-Based Stirling Microcooler Dongzhi Guo1 , Jinsheng Gao2 , Alan J. H. McGaughey1 , Gary K-6431 ABSTRACT A new Stirling micro-refrigeration system composed of arrays of silicon MEMS cooling elements has are explored. The optimal porosity for the best system COP is identified. Keywords: Stirling microcooler

  10. american mining congress: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    SAS and OSU Business Analytics Certificate Program Veiga, Pedro Manuel Barbosa 185 Mining Subsidence Monitoring CiteSeer Summary: Compared to opencut mining, underground...

  11. Virginia Coal Surface Mining Control and Reclamation Act (Virginia)

    Broader source: Energy.gov [DOE]

    This legislation implements the federal Surface Mining Control and Reclamation Act and establishes a statewide regulatory program for reclamation following coal surface mining activities. The...

  12. Modeling the Process of Mining Silicon Through a Single Displacement...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Modeling the Process of Mining Silicon Through a Single DisplacementRedox Reaction Modeling the Process of Mining Silicon Through a Single DisplacementRedox Reaction Below is...

  13. Emissions and Durability of Underground Mining Diesel Particulate...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Durability of Underground Mining Diesel Particulate Filter Applications Emissions and Durability of Underground Mining Diesel Particulate Filter Applications Presentation given at...

  14. Reclamation of Land Used for Mineral Mining (Virginia)

    Broader source: Energy.gov [DOE]

    This legislation aims to provide for the rehabilitation and conservation of land affected by the mining of minerals through proper planning, proper use of appropriate methods of mining,...

  15. Copper isotope fractionation in acid mine drainage. | EMSL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in acid mine drainage. Abstract: We surveyed the Cu isotopic composition of primary minerals and stream water affected by acid mine drainage in a mineralized watershed located in...

  16. australian mining industry: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Globalization is placing new demands on today's metals, mining and forest and paper companies - especially 95 Energy Research Data mining algorithms and software...

  17. abandoned lignite mines: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  18. abandoned metal mines: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  19. abandoned coal mines: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  20. australian coal mining: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  1. abandoned anthracite mines: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  2. african coal mining: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  3. abandoned underground mines: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  4. International Journal of Geography and Geology, 2013, 2(1):1-13 THE REMOTE SENSING IMAGERY, NEW CHALLENGES FOR GEOLOGICAL

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    International Journal of Geography and Geology, 2013, 2(1):1-13 1 THE REMOTE SENSING IMAGERY, NEW CHALLENGES FOR GEOLOGICAL AND MINING MAPPING IN THE WEST AFRICAN CRATON - THE EXAMPLE OF CÔTE D'IVOIRE Gbele of the evolution on the use of remote sensing imagery for geological and mining mapping in West Africa

  5. SPICE Level 3 and BSIM3v3.1 characterization of monolithic integrated CMOS-MEMS devices

    SciTech Connect (OSTI)

    Staple, B.D.; Watts, H.A.; Dyck, C.; Griego, A.P.; Hewlett, F.W.; Smith, J.H.

    1998-08-01T23:59:59.000Z

    The monolithic integration of MicroElectroMechanical Systems (MEMS) with the driving, controlling, and signal processing electronics promises to improve the performance of micromechanical devices as well as lower their manufacturing, packaging, and instrumentation costs. Key to this integration is the proper interleaving, combining, and customizing of the manufacturing processes to produce functional integrated micromechanical devices with electronics. The authors have developed a MEMS-first monolithic integrated process that first seals the micromechanical devices in a planarized trench and then builds the electronics in a conventional CMOS process. To date, most of the research published on this technology has focused on the performance characteristics of the mechanical portion of the devices, with little information on the attributes of the accompanying electronics. This work attempts to reduce this information void by presenting the results of SPICE Level 3 and BSIM3v3.1 model parameters extracted for the CMOS portion of the MEMS-first process. Transistor-level simulations of MOSFET current, capacitance, output resistance, and transconductance versus voltage using the extracted model parameters closely match the measured data. Moreover, in model validation efforts, circuit-level simulation values for the average gate propagation delay in a 101-stage ring oscillator are within 13--18% of the measured data. In general, the BSIM3v3.1 models provide improved accuracy over the SPICE Level 3 models. These results establish the following: (1) the MEMS-first approach produces functional CMOS devices integrated on a single chip with MEMS devices and (2) the devices manufactured in the approach have excellent transistor characteristics. Thus, the MEMS-first approach renders a solid technology foundation for customers designing in the technology.

  6. Seismic Characterization of Coal-Mining Seismicity in Utah for CTBT Monitoring

    SciTech Connect (OSTI)

    Arabasz, W J; Pechmann, J C

    2001-03-01T23:59:59.000Z

    Underground coal mining (down to {approx}0.75 km depth) in the contiguous Wasatch Plateau (WP) and Book Cliffs (BC) mining districts of east-central Utah induces abundant seismicity that is monitored by the University of Utah regional seismic network. This report presents the results of a systematic characterization of mining seismicity (magnitude {le} 4.2) in the WP-BC region from January 1978 to June 2000-together with an evaluation of three seismic events (magnitude {le} 4.3) associated with underground trona mining in southwestern Wyoming during January-August 2000. (Unless specified otherwise, magnitude implies Richter local magnitude, M{sub L}.) The University of Utah Seismograph Stations (UUSS) undertook this cooperative project to assist the University of California Lawrence Livermore National Laboratory (LLNL) in research and development relating to monitoring the Comprehensive Test Ban Treaty (CTBT). The project, which formally began February 28, 1998, and ended September 1, 2000, had three basic objectives: (1) Strategically install a three-component broadband digital seismic station in the WP-BC region to ensure the continuous recording of high-quality waveform data to meet the long-term needs of LLNL, UUSS, and other interested parties, including the international CTBT community. (2) Determine source mechanisms--to the extent that available source data and resources allowed--for comparative seismic characterization of stress release in mines versus earthquakes in the WP-BC study region. (3) Gather and report to LLNL local information on mine operations and associated seismicity, including ''ground truth'' for significant events. Following guidance from LLNL's Technical Representative, the focus of Objective 2 was changed slightly to place emphasis on three mining-related events that occurred in and near the study area after the original work plan had been made, thus posing new targets of opportunity. These included: a magnitude 3.8 shock that occurred close to the Willow Creek coal mine in the Book Cliffs area on February 5, 1998 (UTC date), just prior to the start of this project; a magnitude 4.2 shock on March 7,2000 (UTC date), in the same area as the February 5 event; and a magnitude 4.3 shock that occurred on January 30,2000 (UTC and local date), associated with a panel collapse at the Solvay trona mine in southwestern Wyoming. This is the same mine in which an earlier collapse event of magnitude 5.2 occurred in February 1995, attracting considerable attention from the CTBT community.

  7. Data mining for ontology development.

    SciTech Connect (OSTI)

    Davidson, George S.; Strasburg, Jana (Pacific Northwest National Laboratory, Richland, WA); Stampf, David (Brookhaven National Laboratory, Upton, NY); Neymotin,Lev (Brookhaven National Laboratory, Upton, NY); Czajkowski, Carl (Brookhaven National Laboratory, Upton, NY); Shine, Eugene (Savannah River National Laboratory, Aiken, SC); Bollinger, James (Savannah River National Laboratory, Aiken, SC); Ghosh, Vinita (Brookhaven National Laboratory, Upton, NY); Sorokine, Alexandre (Oak Ridge National Laboratory, Oak Ridge, TN); Ferrell, Regina (Oak Ridge National Laboratory, Oak Ridge, TN); Ward, Richard (Oak Ridge National Laboratory, Oak Ridge, TN); Schoenwald, David Alan

    2010-06-01T23:59:59.000Z

    A multi-laboratory ontology construction effort during the summer and fall of 2009 prototyped an ontology for counterfeit semiconductor manufacturing. This effort included an ontology development team and an ontology validation methods team. Here the third team of the Ontology Project, the Data Analysis (DA) team reports on their approaches, the tools they used, and results for mining literature for terminology pertinent to counterfeit semiconductor manufacturing. A discussion of the value of ontology-based analysis is presented, with insights drawn from other ontology-based methods regularly used in the analysis of genomic experiments. Finally, suggestions for future work are offered.

  8. Amnesty International

    ScienceCinema (OSTI)

    None

    2011-04-25T23:59:59.000Z

    Martin Ennals est secrétaire général d'Amnesty International et fait un discours sur les droits de l'homme

  9. Towards Generic Pattern Mining (Extended Abstract)

    E-Print Network [OSTI]

    Zaki, Mohammed Javeed

    Award DE-FG02-02ER25538, and NSF grants EIA-0103708 and EMT-0432098. We thank Paolo Palmerini and Jeevan computations using a tightly coupled database (DBMS) approach. One of the main attractions of a generic are persistent and indexed, this means the mining can be done efficiently over massive databases, and mined

  10. Principles for Mining Summaries: Theorems and Proofs

    E-Print Network [OSTI]

    Regina, University of

    Principles for Mining Summaries: Theorems and Proofs Robert J. Hilderman and Howard J. Hamilton,hamiltong@cs.uregina.ca Abstract An important problem in the area of data mining is the development of effective measures of inter previously been utilized in various disciplines, such as information theory, statis­ tics, ecology

  11. Department of Geophysics Colorado School of Mines

    E-Print Network [OSTI]

    Department of Geophysics Colorado School of Mines Golden, CO 80401 http://www.geophysics;#12;Department of Geophysics Colorado School of Mines Golden, CO 80401 http://www.geophysics of the requirements for the degree of Master of Science (Geophysics). Golden, Colorado Date: April 14, 2005 Signed

  12. WEB MINING: A ROADMAP Magdalini Eirinaki

    E-Print Network [OSTI]

    Eirinaki, Magdalini

    1 WEB MINING: A ROADMAP Magdalini Eirinaki Dept. of Informatics Athens University of Economics and Business CHAPTER 1 Introduction ­ The three axes of Web Mining 1.1 WWW Impact The World Wide Web, has grown of the Web content, the creation of some meta- knowledge out of the information which is available on the Web

  13. Mining Helium programs with Neon Jurriaan Hage

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Mining Helium programs with Neon Jurriaan Hage Peter van Keeken Department of Information in a first-year functional programming course using the Helium compiler. The mining of such a collection to resolve a type error. 1 #12;1 Introduction and motivation When the Helium compiler for learning Haskell

  14. Data Mining and Knowledge Discovery: Practice Notes

    E-Print Network [OSTI]

    Novak, Petra Kralj

    1 Data Mining and Knowledge Discovery: Practice Notes dr. Petra Kralj Novak Petra.Kralj.Novak@ijs.si and exam · 2013/12/16: Written exam, seminar proposal discussion · 2014/1/8: Data mining seminar gain becomes the root 7. Divide the set S into subsets Si according to the values of A 8. Repeat steps

  15. ANALYSIS OF MINING EXPLOSION PERFORMANCE WITH MULTIPLE

    E-Print Network [OSTI]

    Stump, Brian W.

    Limitations of Video Data · Effect of Blast Design on Near-Source Seismograms · Different Types of Cast Blasts of Models in Visualization ß Two-Dimensional Blast Model ß Three-Dimensional Blast Models 3. Applications to Different Types of Mining Explosions · Single Shot · Cast Blast · Coal Fragmentation #12;Analysis of Mining

  16. Mining Protein Contact Maps Jingjing Hu

    E-Print Network [OSTI]

    Bystroff, Chris

    Mining Protein Contact Maps Jingjing Hu , Xiaolan Shen , Yu Shao ¡ , Chris Bystroff matrix of pairwise, inter-residue contacts, or "contact map". The contact map provides a host of use- ful information about the protein's structure. In this paper we de- scribe how data mining can be used to extract

  17. The Neon DSEL for mining Helium programs

    E-Print Network [OSTI]

    Utrecht, Universiteit

    studies We consider three case studies to illustrate how Neon can be used to data mine the collectionThe Neon DSEL for mining Helium programs Jurriaan Hage Peter van Keeken Department of Information and Computing Sciences, Utrecht University Technical Report UU-CS-2007-023 www.cs.uu.nl ISSN: 0924-3275 #12

  18. Encapsulants for protecting MEMS devices during post-packaging release etch

    DOE Patents [OSTI]

    Peterson, Kenneth A.

    2005-10-18T23:59:59.000Z

    The present invention relates to methods to protect a MEMS or microsensor device through one or more release or activation steps in a "package first, release later" manufacturing scheme: This method of fabrication permits wirebonds, other interconnects, packaging materials, lines, bond pads, and other structures on the die to be protected from physical, chemical, or electrical damage during the release etch(es) or other packaging steps. Metallic structures (e.g., gold, aluminum, copper) on the device are also protected from galvanic attack because they are protected from contact with HF or HCL-bearing solutions.

  19. MEMS Switches Are XS in Size, XXL in Power | GE Global Research

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9November 6, In this3,Office of ScienceMEMS

  20. ENGINEERING INTERNATIONAL

    E-Print Network [OSTI]

    University of Technology, Sydney

    COURSE GUIDE 2013 UTS: ENGINEERING INTERNATIONAL UNDERGRADUATE w w w.eng.uts.edu.au #12;2 / ENGINEERING IN AUSTRALIA Internationally, Australian universities have a reputation for high quality research developed close links with many international institutions, particularly in Asia. ENGINEERING IN SYDNEY

  1. 2/3/2014 How much power from MEMS windmills? -Electronics Eetimes http://www.electronics-eetimes.com/en/how-much-power-from-mems-windmills-63.html?cmp_id=7&news_id=222919711 1/4

    E-Print Network [OSTI]

    Chiao, Jung-Chih

    Product Search EDN Europe Print | Send | RSS Feed 679 Subscribers Twitter 920 Followers Facebook 3381 Fans Software-Defined Radio Handbook High Efficiency, 150V 100mA Synchronous Step-Down Regulator Solutions development of a MEMS windmill that the developers have said could, when produced in array, provide energy

  2. 3rd Int'l Workshop on Micro & Nano Tech. for Power Generation & Energy Conv. (PowerMEMS'03), Makuhari, Japan, 4-5 Dec. 2003. PRELIMINARY DESIGN OF A MEMS STEAM TURBINE POWER PLANT-ON-A-CHIP

    E-Print Network [OSTI]

    Frechette, Luc G.

    ), Makuhari, Japan, 4-5 Dec. 2003. 1 PRELIMINARY DESIGN OF A MEMS STEAM TURBINE POWER PLANT-ON-A-CHIP Luc G. The microfabricated device consists of a steam turbine that drives an integrated micropump and generator. Two, mechanical, then electrical energy. The concept developed herein consists of a microfabricated steam turbine

  3. Method of forming a package for MEMS-based fuel cell

    DOE Patents [OSTI]

    Morse, Jeffrey D; Jankowski, Alan F

    2013-05-21T23:59:59.000Z

    A MEMS-based fuel cell package and method thereof is disclosed. The fuel cell package comprises seven layers: (1) a sub-package fuel reservoir interface layer, (2) an anode manifold support layer, (3) a fuel/anode manifold and resistive heater layer, (4) a Thick Film Microporous Flow Host Structure layer containing a fuel cell, (5) an air manifold layer, (6) a cathode manifold support structure layer, and (7) a cap. Fuel cell packages with more than one fuel cell are formed by positioning stacks of these layers in series and/or parallel. The fuel cell package materials such as a molded plastic or a ceramic green tape material can be patterned, aligned and stacked to form three dimensional microfluidic channels that provide electrical feedthroughs from various layers which are bonded together and mechanically support a MEMS-based miniature fuel cell. The package incorporates resistive heating elements to control the temperature of the fuel cell stack. The package is fired to form a bond between the layers and one or more microporous flow host structures containing fuel cells are inserted within the Thick Film Microporous Flow Host Structure layer of the package.

  4. Dynamic pull-in of parallel plate and torsional electrostatic MEMS actuators.

    SciTech Connect (OSTI)

    Nielson, Gregory N.; Barbastathis, George (Massachusetts Institute of Technology, Cambridge, MA)

    2005-02-01T23:59:59.000Z

    An analysis of the dynamic characteristics of pull-in for parallel-plate and torsional electrostatic actuators is presented. Traditionally, the analysis for pull-in has been done using quasi-static assumptions. However, it was recently shown experimentally that a step input can cause a decrease in the voltage required for pull-in to occur. We propose an energy-based solution for the step voltage required for pull-in that predicts the experimentally observed decrease in the pull-in voltage. We then use similar energy techniques to explore pull-in due to an actuation signal that is modulated depending on the sign of the velocity of the plate (i.e., modulated at the instantaneous mechanical resonant frequency). For this type of actuation signal, significant reductions in the pull-in voltage can theoretically be achieved without changing the stiffness of the structure. This analysis is significant to both parallel-plate and torsional electrostatic microelectromechanical systems (MEMS) switching structures where a reduced operating voltage without sacrificing stiffness is desired, as well as electrostatic MEMS oscillators where pull-in due to dynamic effects needs to be avoided.

  5. A Robust MEMS Based Multi-Component Sensor for 3D Borehole Seismic Arrays

    SciTech Connect (OSTI)

    Paulsson Geophysical Services

    2008-03-31T23:59:59.000Z

    The objective of this project was to develop, prototype and test a robust multi-component sensor that combines both Fiber Optic and MEMS technology for use in a borehole seismic array. The use such FOMEMS based sensors allows a dramatic increase in the number of sensors that can be deployed simultaneously in a borehole seismic array. Therefore, denser sampling of the seismic wave field can be afforded, which in turn allows us to efficiently and adequately sample P-wave as well as S-wave for high-resolution imaging purposes. Design, packaging and integration of the multi-component sensors and deployment system will target maximum operating temperature of 350-400 F and a maximum pressure of 15000-25000 psi, thus allowing operation under conditions encountered in deep gas reservoirs. This project aimed at using existing pieces of deployment technology as well as MEMS and fiber-optic technology. A sensor design and analysis study has been carried out and a laboratory prototype of an interrogator for a robust borehole seismic array system has been assembled and validated.

  6. Generat Technical Report PNW-119 EFFECTS OF MINING

    E-Print Network [OSTI]

    8 Generat Technical Report PNW-119 1981April I EFFECTS OF MINING SUSAN B. MARTIN AND WILLIAM S Habitat in Western North America #12;ABSTRACT Methods of mining and the effects on aquatic ecosystems of mine-caused sediment, changes in pH, and toxic heavy metals are described. KEYWORDS: Mining methods

  7. MINING ENGINEERING SCHOLARSHIP APPLICATION FOR GPA-BASED SCHOLARSHIPS

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    MINING ENGINEERING SCHOLARSHIP APPLICATION FOR GPA-BASED SCHOLARSHIPS DEPARTMENT OF MINING: EDUCATIONAL INFORMATION: Current GPA: Credits Completed: Current Major (check one): MinE MinE/CE MinE/GEOL Note: As a MinE/CE or MinE/GEOL major, is MinE listed on your "General Student Form" as your first

  8. Foundations of Artificial Intelligence Introduction to Data Mining

    E-Print Network [OSTI]

    Qu, Rong

    Foundations of Artificial Intelligence Introduction to Data Mining #12;Data Mining Objectives Introduce a range of data mining techniques used in AI systems including : · Neural networks · Decision trees · ... Present some real life data mining applications. Student should gain the knowledge on how

  9. Data mining for Action Recognition Andrew Gilbert Richard Bowden

    E-Print Network [OSTI]

    Bowden, Richard

    Data mining for Action Recognition Andrew Gilbert Richard Bowden Centre for Vision Speech of the features used. This paper improves the performance of action recognition through two data mining techniques, APriori association rule mining and Contrast Set Mining. These tech- niques are ideally suited to action

  10. Mining Positive and Negative Association Rules from Large Databases

    E-Print Network [OSTI]

    Gent, Universiteit

    Mining Positive and Negative Association Rules from Large Databases Chris Cornelis Dept. Appl. Math. Keywords--association rules, data mining, Apriori I. INTRODUCTION The idea of association rule (AR) mining a D-link network card". Mining negative association rules, however, raises a number of critical issues

  11. Introduction to Artificial Intelligence An Introduction to Data Mining

    E-Print Network [OSTI]

    Qu, Rong

    Introduction to Artificial Intelligence G51IAI An Introduction to Data Mining #12; Introduce a range of data mining techniques used in AI systems including : · Neural networks · Decision trees · ... Present some real life data mining applications. 2 Learning Objectives Dr Rong Qu G51IAI ­ Data Mining #12

  12. Wil M. P. van der Aalst Process Mining

    E-Print Network [OSTI]

    van der Aalst, Wil

    1 Wil M. P. van der Aalst Process Mining Discovery, Conformance and Enhancement of Business Processes Process Mining Wil M. P. van der Aalst Computer Science ProcessMining Discovery, Conformance organizations diagnose problems based on fiction rather than facts. Process mining is an emerging discipline

  13. Off Earth Mining Forum 19-21 February 2013

    E-Print Network [OSTI]

    Sekercioglu, Y. Ahmet

    1 Off Earth Mining Forum 19-21 February 2013 www.acser.unsw.edu.au/oemf Never Stand Still Faculty of Engineering Australian Centre for Space Engineering Research (ACSER) #12;Off Earth Mining Forum, UNSW, Sydney Australia's place in space. Off Earth Mining Forum Sponsors Off Earth Mining Forum The prospect of people

  14. West Virginia University 1 Department of Mining Engineering

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    to advanced mining engineering problems. This program provides students the technical knowledge and researchWest Virginia University 1 Department of Mining Engineering Degrees Offered · Master's of science in mining engineering · Master's of science in engineering with a major in mining engineering · Doctor

  15. Remediation of Abandoned Mines Using Coal Combustion By-Products

    E-Print Network [OSTI]

    Aydilek, Ahmet

    . Maryland has about 450 coal mines out of which only 50 are active and about 150 mines produce AMD RafalkoRemediation of Abandoned Mines Using Coal Combustion By-Products Sowmya Bulusu1 ; Ahmet H. Aydilek that occurs when pyrite that is present in abandoned coal mines comes in contact with oxygen and water, which

  16. Optimization Online - Passenger Name Record Data Mining Based ...

    E-Print Network [OSTI]

    Dolores Romero Morales

    2008-04-16T23:59:59.000Z

    Apr 16, 2008 ... Passenger Name Record Data Mining Based Cancellation Forecasting for Revenue Management. Dolores Romero ...

  17. A Fast Algorithm for Data Mining CS 297 Report

    E-Print Network [OSTI]

    Pollett, Chris

    A Fast Algorithm for Data Mining CS 297 Report Aarathi Raghu Advisor: Dr.Chris Pollett December 2005 #12;A Fast Algorithm For Data Mining Abstract This report describes the data mining algorithms implemented and lessons learned during the course of my CS 297. Data Mining is a growing field and a plethora

  18. Semantic Analysis of Role Mining Results and Shadowed Roles Detection

    E-Print Network [OSTI]

    Garcia-Alfaro, Joaquin

    . These techniques get inspiration from data mining techniques, hence, they are known as role mining (RM). Several eSemantic Analysis of Role Mining Results and Shadowed Roles Detection Safa`a Hachanaa,c , Fr, Email: safa@swid.fr bInstitut Telecom-Mines/Telecom Bretagne, D´ept. LUSSI, Rennes, France Emails

  19. Mining patterns of events in students' teamwork data

    E-Print Network [OSTI]

    Zaiane, Osmar R.

    Mining patterns of events in students' teamwork data Judy Kay, Nicolas Maisonneuve, Kalina Yacef the electronic traces of their collaborations. The paper describes data mining of student group interaction data quantities, preprocessing it into a suitable alphabet for use in data mining. Then, we need data mining

  20. Method of underground mining by pillar extraction

    DOE Patents [OSTI]

    Bowen, Ray J. (1879 Delann, Salt Lake City, UT 84121); Bowen, William R. (1636 Sunnydale La., Salt Lake City, UT 84108)

    1980-08-12T23:59:59.000Z

    A method of sublevel caving and pillar and top coal extraction for mining thick coal seams includes the advance mining of rooms and crosscuts along the bottom of a seam to a height of about eight feet, and the retreat mining of the top coal from the rooms, crosscuts and portions of the pillars remaining from formation of the rooms and cross-cuts. In the retreat mining, a pocket is formed in a pillar, the top coal above the pocket is drilled, charged and shot, and then the fallen coal is loaded by a continuous miner so that the operator remains under a roof which has not been shot. The top coal from that portion of the room adjacent the pocket is then mined, and another pocket is formed in the pillar. The top coal above the second pocket is mined followed by the mining of the top coal of that portion of the room adjacent the second pocket, all by use of a continuous miner which allows the operator to remain under a roof portion which has not been shot.

  1. Mitigation planning for raptors during mining

    SciTech Connect (OSTI)

    Platt, S.W. [Wyoming Dept. of Environmental Quality/Land Quality Division, Lander, WY (United States); Hargis, N.E. [Bridger Coal Co., Rock Springs, WY (United States)

    1990-12-31T23:59:59.000Z

    Birds of prey and their eggs, young and nests are protected by state and federal laws and regulations. Surface mining operators may experience conflicts with raptors when expanding into nesting areas or when raptors are attracted into mining areas. State and federal permits are required for disturbance or manipulation of birds of prey. Mitigation planning for raptors begins before mining and continues through mining. As conflict situations changes, so must the mitigation plan. Before each nesting season the mining schedule should be compared to areas of known raptor nesting activity. If overlap occurs, nest protection measures may be needed. Areas of potential conflict should be patrolled regularly to identify the presence of a raptor pair and nest starts. Should a raptor nest be built and eggs laid, a change in the mining schedule or an egg or brood manipulation may resolve the conflict. Bridger Coal Company has successfully mitigated conflicts with 3 raptor species. A ferruginous hawk (Buteo regalis) nest with brood was successfully relocated across a pit. Red-tailed hawk (B. jamaicensis) egg clutches were removed from 2 highwall nests and transported in a portable incubator to a commercial raptor propagator where they were hatched, fed and conspecifically imprinted until achieving self-thermoregulation. All chicks were returned to the mine and successfully placed into foster nests. A metal artificial nest ledge for a prairie falcon (Falco mexicanus) was constructed in a cliff and a traditional nesting ledge rendered inaccessible. The falcon pair successfully nested in the artificial ledge.

  2. Paramont's Black Bear No. 4 mine does it right, again

    SciTech Connect (OSTI)

    Sanda, A.

    2007-07-15T23:59:59.000Z

    The Paramont Coal Company Virginia, LLC, a subsidiary of Alpha Natural Resources, recently won the '2007 overall award for excellence in mining and reclamation from the Virginia Division of Mined Land Reclamation and the Virginia Mining Association. Coal People Magazine recently visited Black Bear No. 4 mine where a settling pond was being removed and stream bed placed to drain the area, part of the 451-acre award winning reclamation project. The article recounts discussions with mining engineers about the company's operations with emphasis on the Black Bear No. 4 mine. Black Bear No. 1 mine won five state and national awards last year for conservation and land management practices. 8 photos.

  3. Power MEMS 2007, Nov. 28-29, 2007, Freiburg, Germany Fig. 1: Micro quartz combustor. (a) Schematic,

    E-Print Network [OSTI]

    Kasagi, Nobuhide

    Power MEMS 2007, Nov. 28-29, 2007, Freiburg, Germany 265 Fig. 1: Micro quartz combustor. (a, 1.0 mm, and 1.5 mm. FLAME PROPAGATION AND QUENCHING IN ULTRA-THIN QUARTZ COMBUSTORS Yong Fan, Yuji and analysis of premixed CH4/Air flame propagation and quenching in three quartz combustors with chamber depth

  4. Adaptive Kalman Filter for MEMS-IMU based Attitude Estimation under External Acceleration and Parsimonious use of Gyroscopes

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Adaptive Kalman Filter for MEMS-IMU based Attitude Estimation under External Acceleration a viable quaternion-based Adaptive Kalman Filter (q-AKF) that is designed for rigid body attitude estimation. This approach is an alternative to overcome the limitations of the classical Kalman filter. The q

  5. JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 21, NO. 6, DECEMBER 2012 1519 Ultrahigh-Dynamic-Range Resonant MEMS Load

    E-Print Network [OSTI]

    Akin, Tayfun

    on a microelectromechanical system process on glass, and is suitable for applications such as reconfigurable leaky/left- handed (CRLH), metamaterial, microelectromechanical system (MEMS), reconfigurable. I. INTRODUCTION Awide micromachined (e.g. [3], [4]) and reconfigurable (e.g. [5]­[9]) CRLH structures. Microelectromechanical system

  6. Flat Is Not Dead: Current and Future Performance of Si-MEMS Quad Mass Gyro (QMG) System

    E-Print Network [OSTI]

    Tang, William C

    . The main example of MEMS Class I CVG is the dual mass Tuning Fork Gyro (TFG), such as the Draper/Honeywell (Honeywell) and medium performance (Northrop Grumman LITEF) tactical grade systems. The classic dual TFG, disk, shells in R&D Angular gain, drive amplitude Modal mass, time constant, Q Examples Draper/Honeywell

  7. A MEMS-enabled 3D zincair microbattery with improved discharge characteristics based on a multilayer metallic substructure

    E-Print Network [OSTI]

    , zinc­air batteries are good candidates for the previously mentioned miniaturized applications. Commercially available zinc­air batteries utilize Zn powder for the anode electrode, achieving high surfaceA MEMS-enabled 3D zinc­air microbattery with improved discharge characteristics based

  8. EMC EUROPE WORKSHOP 2005, ROME, ITALY Technical Areas (11. Antennas) RF-MEMS Capacitive Series Switches of CPW & MSL

    E-Print Network [OSTI]

    De Flaviis, Franco

    EMC EUROPE WORKSHOP 2005, ROME, ITALY Technical Areas (11. Antennas) RF-MEMS Capacitive Series.P. Li and Franco De Flaviis Department of Electrical Engineering and Computer Science, University substrate (r = 7.4 and tan = 0.001) as shown in figure 1 (a) and (b). The isolation and insertion losses

  9. Querying Multiple Sets of Discovered Rules Rule mining is an important data mining task that has been

    E-Print Network [OSTI]

    Liu, Bing

    operating on multiple rulebases because many practically important data mining queries naturally requireQuerying Multiple Sets of Discovered Rules ABSTRACT Rule mining is an important data mining task querying of multiple data mining rulebases to retrieve interesting rules. In this paper, we propose a new

  10. Method of locating underground mines fires

    DOE Patents [OSTI]

    Laage, Linneas (Eagam, MN); Pomroy, William (St. Paul, MN)

    1992-01-01T23:59:59.000Z

    An improved method of locating an underground mine fire by comparing the pattern of measured combustion product arrival times at detector locations with a real time computer-generated array of simulated patterns. A number of electronic fire detection devices are linked thru telemetry to a control station on the surface. The mine's ventilation is modeled on a digital computer using network analysis software. The time reguired to locate a fire consists of the time required to model the mines' ventilation, generate the arrival time array, scan the array, and to match measured arrival time patterns to the simulated patterns.

  11. STPMiner: A Highperformance Spatiotemporal Pattern Mining Toolbox

    SciTech Connect (OSTI)

    Vatsavai, Raju [ORNL] [ORNL

    2011-01-01T23:59:59.000Z

    The volume of spatiotemporal data being generated from scientific simulations and observations from sensors is growing at an astronomical rate. This data explosion is going to pose three challenges to the existing data mining infrastructure: algorithmic, computational, and I/O. Over the years we have implemented several spatiotemporal data mining algorithms including: outliers/anomalies, colocation patterns, change patterns, clustering, classification, and prediction algorithms. In this paper we briefly discuss the core spatiotemporal pattern mining algorithms along with some of the computational and I/O challenges associated with the big data.

  12. Remediation of inactive mining and milling sites

    SciTech Connect (OSTI)

    Mao, H.; Pan, Y.; Li, R.

    1993-12-31T23:59:59.000Z

    The presentation introduces relevant environment remediation standards and describes some measures of engineering remedied for inactive mines and mills. Since 1990, the remediation of decommissioned nuclear facilities has obtained fixed financial aid from state government, part of which is offered to inactive mines and mills. Considering the environmental characteristics of Chinese uranium mines and mills, the major task of decommissioning is to prevent radon release, and keep surface water and underground water from contamination. In order to control the rate of radon release effectively, the authors` research institutes conducted a series of experiments on the covers of tailings with two kinds of different material, clay and concrete.

  13. Mining metrics for buried treasure

    E-Print Network [OSTI]

    D. A. Konkowski; T. M. Helliwell

    2005-01-07T23:59:59.000Z

    The same but different: That might describe two metrics. On the surface CLASSI may show two metrics are locally equivalent, but buried beneath one may be a wealth of further structure. This was beautifully described in a paper by M.A.H. MacCallum in 1998. Here I will illustrate the effect with two flat metrics -- one describing ordinary Minkowski spacetime and the other describing a three-parameter family of Gal'tsov-Letelier-Tod spacetimes. I will dig out the beautiful hidden classical singularity structure of the latter (a structure first noticed by Tod in 1994) and then show how quantum considerations can illuminate the riches. I will then discuss how quantum structure can help us understand classical singularities and metric parameters in a variety of exact solutions mined from the Exact Solutions book.

  14. INTERNATIONAL AGREEMENTS

    Office of Environmental Management (EM)

    generators, reactor pressure vessel and internals, cables, piping, pumps, valves) - optimization of nuclear power plant generation capacity (digital I&C upgrades, advanced...

  15. Mining User Groups in the Social News Website: Community Detection in Bipartite Networks.

    E-Print Network [OSTI]

    YANG, HO-SHUN

    2012-01-01T23:59:59.000Z

    Mining user behaviors with indirectmore informative for the mining purpose. On the other hand,of California Los Angeles Mining User Groups in the Social

  16. artisans mining columbite-tantalite: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Mines Using Coal Combustion By-Products Engineering Websites Summary: subject headings: Remedial action; Acid mine water; Mines; Coals; Recycling; Maryland; Fly ashRemediation of...

  17. Restoration Potential of a Mining-Impacted Urban Stream: Horseshoe Branch of Lion Creek, Oakland, CA

    E-Print Network [OSTI]

    Hackenjos, Bethany; Woelfle-Erskine, Cleo; Wood, Jacob

    2010-01-01T23:59:59.000Z

    revenues to remediate mining impacts. State and regionalRestoration Potential of a Mining-Impacted Urban Stream:have addressed the impacts of mining, although hundreds of

  18. Clustering Techniques for Data Mining and Protein Design Around The Concept of Locality

    E-Print Network [OSTI]

    Hakkoymaz, Huseyin

    2010-01-01T23:59:59.000Z

    1998, pp. 580-592. F.C. Payton, “Data mining in healthapplications,” Data mining: opportunities and challenges,Techniques and Experience in Mining RemotelySensed Satellite

  19. Do Investors Forecast Fat Firms? Evidence from the Gold Mining Industry

    E-Print Network [OSTI]

    Borenstein, Severin; Farrell, Joseph

    2006-01-01T23:59:59.000Z

    Fat Firms? Evidence from the Gold Mining Industry Abstract:market valuations of gold mining companies vary with goldstock values of many gold mining companies are concave in

  20. Gold Mining Impacts on Food Chain Mercury in Northwestern Sierra Nevada Streams

    E-Print Network [OSTI]

    Slotton, Darell G; Ayers, Shaun M; Reuter, John E; Goldman, Charles R

    1995-01-01T23:59:59.000Z

    KEYWORDS,' mercury, gold, mining, trout, invertebrates,GOLD MINING IMPACTS ON FOOD CHAIN MERCURY IN NORTHWESTERNduring the course of gold mining in the Gold Rush period of

  1. Mass spectrometry-guided genome mining of peptidic and glycosylated microbial natural products

    E-Print Network [OSTI]

    Kersten, Roland David

    mass spectrometry-guided genome mining approach for naturalBioactivity-guided genome mining identifies the lomaiviticinspectrometry and genome mining via short sequence tagging

  2. The production of consumption: addressing the impact of mineral mining on tuberculosis in southern Africa

    E-Print Network [OSTI]

    Basu, Sanjay; Stuckler, David; Gonsalves, Gregg; Lurie, Mark

    2009-01-01T23:59:59.000Z

    and Rights Alliance: The Mining Sector, Tuberculosis andthe impact of mineral mining on tuberculosis in southernbetween mineral mining activities and tuberculosis incidence

  3. Kinetics of Pyrrhotite Oxidation in Seawater: Implications for Mining Seafloor Hotsprings

    E-Print Network [OSTI]

    Romano, Gina Yolanda

    2012-01-01T23:59:59.000Z

    implications for seafloor mining, University of California,J. , 2010, Deep- sea mining of seafloor massive sulfides,in Seawater: Implications for Mining Seafloor Hotsprings A

  4. Surface Coal Mining and Reclamation (Indiana)

    Broader source: Energy.gov [DOE]

    The Indiana Department of Natural Resources implements and enforces the federal Surface Mining Control and Reclamation Act of 1977, as well as a statewide program to protect society and the...

  5. Nonmetallic Mining Reclamation; Oil and Gas (Wisconsin)

    Broader source: Energy.gov [DOE]

    These regulations describe standards relevant to reclamation that must be followed both during and after the completion of mining in a given area. An operator who wishes to engage in nonmetallic...

  6. Georgia Surface Mining Act of 1968 (Georgia)

    Broader source: Energy.gov [DOE]

    This law regulates all surface mining in Georgia, including the coastal zone. It includes provisions to “advance the protection of fish and wildlife and the protection and restoration of land,...

  7. Analysis of Bitcoin Pooled Mining Reward Systems

    E-Print Network [OSTI]

    Rosenfeld, Meni

    2011-01-01T23:59:59.000Z

    In this paper we describe the various scoring systems used to calculate rewards of participants in Bitcoin pooled mining, explain the problems each were designed to solve and analyze their respective advantages and disadvantages.

  8. New approaches to weighted frequent pattern mining

    E-Print Network [OSTI]

    Yun, Unil

    2007-04-25T23:59:59.000Z

    Researchers have proposed frequent pattern mining algorithms that are more efficient than previous algorithms and generate fewer but more important patterns. Many techniques such as depth first/breadth first search, use of tree/other data structures...

  9. Equipment Selection for Surface Mining: A Review

    E-Print Network [OSTI]

    2013-07-19T23:59:59.000Z

    extract and haul mined material, including both waste and ore, over the lifetime .... tions where primary excavations occur and stockpiles where reserve material is ... with respect to period demand, productivity balancing requirements between

  10. Coal Mining Regulatory and Reclamation Act (Massachusetts)

    Broader source: Energy.gov [DOE]

    These regulations aim to ensure that any coal mining or extraction will be conducted in a manner that will not significantly damage the environment or area of land affected. The Department of...

  11. civil engineering College of Engineering and Mines

    E-Print Network [OSTI]

    Hartman, Chris

    civil engineering College of Engineering and Mines Department of Civil and Environmental's degree program can include courses in environmental engineering, engineering management and other areas. An advanced degree in environmental engineering administered within the civil en- gineering department

  12. Parallel Data Mining for Association Rules

    E-Print Network [OSTI]

    Zaki, Mohammed Javeed

    to businesses, such as cus­ tomer buying patterns, shelving criterion in supermarkets and stock trends. Many information on customer buying patterns, shelving criterion in supermarkets, stock trends, etc. Data mining

  13. Fuelcell-Hybrid Mine loader (LHD)

    SciTech Connect (OSTI)

    James L Dippo; Tim Erikson; Kris Hess

    2009-07-10T23:59:59.000Z

    The fuel cell hybrid mine loader project, sponsored by a government-industry consortium, was implemented to determine the viability of proton exchange membrane (PEM) fuel cells in underground mining applications. The Department of Energy (DOE) sponsored this project with cost-share support from industry. The project had three main goals: (1) to develop a mine loader powered by a fuel cell, (2) to develop associated metal-hydride storage and refueling systems, and (3) to demonstrate the fuel cell hybrid loader in an underground mine in Nevada. The investigation of a zero-emissions fuel cell power plant, the safe storage of hydrogen, worker health advantages (over the negative health effects associated with exposure to diesel emissions), and lower operating costs are all key objectives for this project.

  14. Design, fabrication, and characterization of a MEMS steam-generating device based on the decomposition of high-test hydrogen peroxide

    E-Print Network [OSTI]

    Eid, Feras

    2010-01-01T23:59:59.000Z

    Microscale ejector pumps offer the potential for high flow rate pumping of gases, a functionality that is greatly needed in MEMS technology. These pumps have many additional characteristics, such as their simplicity of ...

  15. 2004 URSI Meeting, 5-8 January 2004, at the University of Colorado, Boulder, Colorado, USA. Polyimide Planarization for RF-MEMS Switch on PCB

    E-Print Network [OSTI]

    De Flaviis, Franco

    Polyimide Planarization for RF-MEMS Switch on PCB Bahram Ghodsian, C. Jung, B. Cetiner and F. De Flaviis it maintains the high RF-performance of switches. The fabrication process uses polyimide to planerize

  16. The International Workshop on Computer Architecture for Machine Perception and Sensing MEMS-Based Electrostatic Actuated Scanner Dedicated for Ultrasound

    E-Print Network [OSTI]

    Peter, Yves-Alain

    ofthe motor when it goes from one step to another. This vibration turns out in artifacts which affect is rotated to perform a fan or rotational scanning using a step motor [1]. The first technique suffers from noise and scanning gaps which may reduce the image quality, particularly when high resolution imaging

  17. Compact MEMS-based Adaptive Optics Optical Coherence Tomography for Clinical Use

    SciTech Connect (OSTI)

    Chen, D; Olivier, S; Jones, S; Zawadzki, R; Evans, J; Choi, S; Werner, J

    2008-02-04T23:59:59.000Z

    We describe a compact MEMS-based adaptive optics (AO) optical coherence tomography system with improved AO performance and ease of clinical use. A typical AO system consists of a Shack-Hartmann wavefront sensor and a deformable mirror that measures and corrects the ocular and system aberrations. Because of the limitation on the current deformable mirror technologies, the amount of real-time ocular-aberration compensation is restricted and small in the previous AO-OCT instruments. In this instrument, we proposed to add an optical apparatus to correct the spectacle aberrations of the patients such as myopia, hyperopia and astigmatism. This eliminated the tedious process of the trial lenses in clinical imaging. Different amount of spectacle aberration compensation was achieved by motorized stages and automated with the AO computer for ease of clinical use. In addition, the compact AO-OCT was optimized to have minimum system aberrations to reduce AO registration errors and improve AO performance.

  18. MINING ENGINEERING AT McGILL Bachelor of Engineering in Mining Engineering

    E-Print Network [OSTI]

    Barthelat, Francois

    engineers have a solid foundation in math, chemistry, physics and geology.They enjoy taking research in Quebec, and oil sands mining in northern Alberta.Very importantly, all McGill engineering required courses in math, chemistry, physics, geology and mining. A co-op program, it includes four paid

  19. Mining Likely Properties of Access Control Policies via Association Rule Mining

    E-Print Network [OSTI]

    Xie, Tao

    Mining Likely Properties of Access Control Policies via Association Rule Mining JeeHyun Hwang1 Tao.hu@nist.gov maltunay@fnal.gov Abstract. Access control mechanisms are used to control which princi- pals (such as users Introduction Access control mechanisms are used to control which principals (such as users or processes) have

  20. Introduction to Bitcoin Mining A Guide For Gamers, Geeks, and Everyone Else

    E-Print Network [OSTI]

    Shamos, Michael I.

    Introduction to Bitcoin Mining A Guide For Gamers, Geeks, and Everyone Else by David R. Sterry;Introduction to Bitcoin Mining Contents Introduction.....................................4 Why Start Mining...........................................................11 Creating New Bitcoins .......................................................12 Mining Hardware

  1. Introduction: Lessons Learned from Data Mining Applications and Collaborative Problem Solving

    E-Print Network [OSTI]

    Langley, Pat

    Introduction: Lessons Learned from Data Mining Applications and Collaborative Problem Solving Nada paper to the special issue on Data Mining Lessons Learned presents lessons from data mining applications. Keywords: data mining, machine learning, scientific discovery, lessons learned, applications, collaborative

  2. Data Mining Empowers the Generation of a Novel Class of Chromosome-specific DNA Probes

    E-Print Network [OSTI]

    Zeng, Hui

    2012-01-01T23:59:59.000Z

    eds. ), Zeng et al. : Data mining for probes Excerpta330. Zeng et al. : Data mining for probes 31. Fung J, WeierZeng et al. : Data mining for probes Data Mining Empowers

  3. ESF Mine Power Center Platforms

    SciTech Connect (OSTI)

    T.A. Misiak

    2000-02-10T23:59:59.000Z

    The purpose and objective of this analysis is to structurally evaluate the existing Exploratory Studies Facility (ESF) mine power center (MPC) support frames and to design service platforms that will attach to the MPC support frames. This analysis follows the Development Plan titled ''Produce Additional Design for Title 111 Evaluation Report'' (CRWMS M&O 1999a). This analysis satisfies design recommended in the ''Title III Evaluation Report for the Surface and Subsurface Power System'' (CRWMS M&O 1999b, Section 7.6) and concurred with in the ''System Safety Evaluation of Title 111 Evaluation Reports Recommended Work'' (Gwyn 1999, Section 10.1.1). This analysis does not constitute a level-3 deliverable, a level-4 milestone, or a supporting work product. This document is not being prepared in support of the Monitored Geologic Repository (MGR) Site Recommendation (SR), Environmental Impact Statement (EIS), or License Application (LA) and should not be cited as a reference in the MGR SR, EIS, or LA.

  4. Venezuela-MEM/USA-DOE Fossil Energy Report XIII-1, Supporting Technology for Enhanced Oil Recovery, Microbial EOR

    SciTech Connect (OSTI)

    Ziritt, Jose Luis

    1999-11-03T23:59:59.000Z

    The results from Annex XIII of the Cooperative Agreement between the United States Department of Energy (DOE) and the Ministry of Energy and Mines of the Republic of Venezuela (MEMV) have been documented and published with many researchers involved. Integrate comprehensive research programs in the area of Microbial Enhanced Oil Recovery (MEOR) ranged from feasibility laboratory studies to full-scale multi-well field pilots. The objective, to cooperate in a technical exchange of ideas and information was fully met throughout the life of the Annex. Information has been exchanged between the two countries through published reports and technical meetings between experts in both country's research communities. The meetings occurred every two years in locations coincident with the International MEOR conferences & workshops sponsored by DOE (June 1990, University of Oklahoma, September 1992, Brookhaven, September 1995, National Institute of Petroleum and Energy Research). Reports and publications produced during these years are listed in Appendix B. Several Annex managers have guided the exchange through the years. They included Luis Vierma, Jose Luis Zirritt, representing MEMV and E. B. Nuckols, Edith Allison, and Rhonda Lindsey, representing the U.S. DOE. Funding for this area of research remained steady for a few years but decreased in recent years. Because both countries have reduced research programs in this area, future exchanges on this topic will occur through ANNEX XV. Informal networks established between researchers through the years should continue to function between individuals in the two countries.

  5. Carbon Sequestration on Surface Mine Lands

    SciTech Connect (OSTI)

    Donald Graves; Christopher Barton; Richard Sweigard; Richard Warner; Carmen Agouridis

    2006-03-31T23:59:59.000Z

    Since the implementation of the federal Surface Mining Control and Reclamation Act of 1977 (SMCRA) in May of 1978, many opportunities have been lost for the reforestation of surface mines in the eastern United States. Research has shown that excessive compaction of spoil material in the backfilling and grading process is the biggest impediment to the establishment of productive forests as a post-mining land use (Ashby, 1998, Burger et al., 1994, Graves et al., 2000). Stability of mine sites was a prominent concern among regulators and mine operators in the years immediately following the implementation of SMCRA. These concerns resulted in the highly compacted, flatly graded, and consequently unproductive spoils of the early post-SMCRA era. However, there is nothing in the regulations that requires mine sites to be overly compacted as long as stability is achieved. It has been cultural barriers and not regulatory barriers that have contributed to the failure of reforestation efforts under the federal law over the past 27 years. Efforts to change the perception that the federal law and regulations impede effective reforestation techniques and interfere with bond release must be implemented. Demonstration of techniques that lead to the successful reforestation of surface mines is one such method that can be used to change perceptions and protect the forest ecosystems that were indigenous to these areas prior to mining. The University of Kentucky initiated a large-scale reforestation effort to address regulatory and cultural impediments to forest reclamation in 2003. During the three years of this project 383,000 trees were planted on over 556 acres in different physiographic areas of Kentucky (Table 1, Figure 1). Species used for the project were similar to those that existed on the sites before mining was initiated (Table 2). A monitoring program was undertaken to evaluate growth and survival of the planted species as a function of spoil characteristics and reclamation practice. In addition, experiments were integrated within the reforestation effort to address specific questions pertaining to sequestration of carbon (C) on these sites.

  6. Mining vertical coal seams in France

    SciTech Connect (OSTI)

    Schneiderman, S.J.

    1981-05-01T23:59:59.000Z

    French coal miners in the Lorraine Basin coalfields of Charbonnages de France, work under extremely difficult mining conditions. The coal seams are located in two parallel anticlines dipping to the southwest. On the northwest flanks the coal dips at angles up to 40/sup 0/; on the southeast flanks the coal dips as steep as 90/sup 0/. In addition to the problems associated with steeply dipping coal seams, the coal is often more than 3 meters (10 feet) thick, thus contributing the additional problems that are associated with thick seams. A cut-and-fill mining method is used and production of up to 400 tons per day for a three-shift working face has been achieved. The cut-and-fill mining method employed at Puit Reumaux, rising horizontal rooms with hydraulic stowing, is used in areas of the mine where seam dips exceed 45/sup 0/ and where seam thickness is from 2 to 5 meters (6.5 to 16.5 feet). Hydraulic stowing has many advantages for the Merlebach mine: The coalis located under urbanized areas and is also covered by water-bearing strata with hydraulic sand stowing there is little subsidence, so disturbances to the surface and the aquiferous zones are minimized. Hydraulic sand stowing also helps prevent eating and combustion.

  7. Compliant membranes for the development of MEMS dual-backplate capacitive microphone using the SUMMiT V fabrication process.

    SciTech Connect (OSTI)

    Martin, David (University of Florida, Gainesville, FL)

    2005-11-01T23:59:59.000Z

    The objective of this project is the investigation of compliant membranes for the development of a MicroElectrical Mechanical Systems (MEMS) microphone using the Sandia Ultraplanar, Multilevel MEMS Technology (SUMMiT V) fabrication process. The microphone is a dual-backplate capacitive microphone utilizing electrostatic force feedback. The microphone consists of a diaphragm and two porous backplates, one on either side of the diaphragm. This forms a capacitor between the diaphragm and each backplate. As the incident pressure deflects the diaphragm, the value of each capacitor will change, thus resulting in an electrical output. Feedback may be used in this device by applying a voltage between the diaphragm and the backplates to balance the incident pressure keeping the diaphragm stationary. The SUMMiT V fabrication process is unique in that it can meet the fabrication requirements of this project. All five layers of polysilicon are used in the fabrication of this device. The SUMMiT V process has been optimized to provide low-stress mechanical layers that are ideal for the construction of the microphone's diaphragm. The use of chemical mechanical polishing in the SUMMiT V process results in extremely flat structural layers and uniform spacing between the layers, both of which are critical to the successful fabrication of the MEMS microphone. The MEMS capacitive microphone was fabricated at Sandia National Laboratories and post-processed, packaged, and tested at the University of Florida. The microphone demonstrates a flat frequency response, a linear response up to the designed limit, and a sensitivity that is close to the designed value. Future work will focus on characterization of additional devices, extending the frequency response measurements, and investigating the use of other types of interface circuitry.

  8. Measured and predicted temperature profiles along MEMS bridges at pressures from 0.05 to 625 torr.

    SciTech Connect (OSTI)

    Gallis, Michail A.; Torczynski, John Robert; Piekos, Edward Stanley; Serrano, Justin Raymond; Gorby, Allen D.; Phinney, Leslie Mary

    2010-10-01T23:59:59.000Z

    We will present experimental and computational investigations of the thermal performance of microelectromechanical systems (MEMS) as a function of the surrounding gas pressure. Lowering the pressure in MEMS packages reduces gas damping, providing increased sensitivity for certain MEMS sensors; however, such packaging also dramatically affects their thermal performance since energy transfer to the environment is substantially reduced. High-spatial-resolution Raman thermometry was used to measure the temperature profiles on electrically heated, polycrystalline silicon bridges that are nominally 10 microns wide, 2.25 microns thick, 12 microns above the substrate, and either 200 or 400 microns long in nitrogen atmospheres with pressures ranging from 0.05 to 625 Torr. Finite element modeling of the thermal behavior of the MEMS bridges is performed and compared to the experimental results. Noncontinuum gas effects are incorporated into the continuum finite element model by imposing temperature discontinuities at gas-solid interfaces that are determined from noncontinuum simulations. The experimental and simulation results indicate that at pressures below 0.5 Torr the gas-phase heat transfer is negligible compared to heat conduction through the thermal actuator legs. As the pressure increases above 0.5 Torr, the gas-phase heat transfer becomes more significant. At ambient pressures, gas-phase heat transfer drastically impacts the thermal performance. The measured and simulated temperature profiles are in qualitative agreement in the present study. Quantitative agreement between experimental and simulated temperature profiles requires accurate knowledge of temperature-dependent thermophysical properties, the device geometry, and the thermal accommodation coefficient.

  9. International Programs and Services International Programs

    E-Print Network [OSTI]

    Stephens, Graeme L.

    International Programs and Services _______________ 1.5 Page 1 International Programs and Services OFFICE OF INTERNATIONAL PROGRAMS Offices in Laurel Hall (970) 491-5917 www.international.colostate.edu James A. Cooney, Vice Provost for International Affairs The Office of International Programs acts

  10. International Programs and Services International Programs

    E-Print Network [OSTI]

    Collett Jr., Jeffrey L.

    International Programs and Services International Programs and Services OFFICE OF INTERNATIONAL PROGRAMS Offices in Laurel Hall (970) 491-5917 international.colostate.edu James A. Cooney, Vice Provost for International Affairs The Office of International Programs acts as a catalyst for ideas that bring about

  11. B.S. in Mining Engineering Four-Year Plan

    E-Print Network [OSTI]

    Wong, Pak Kin

    courses (See advisor for requirements) 5TH SEMESTER MNE 427 Geomechanics 4 CE 214; CE 215 MNE 412 Mine MNE 427 Geomechanics 4 CE 214; CE 215 MNE 412 Mine Surveying 2 Corequisite MNE 297A CE 218 Mechanics

  12. Water Management Plans for Surface Coal Mining Operations (North Dakota)

    Broader source: Energy.gov [DOE]

    A water management plan is required for all surface coal mining operations. This plan must be submitted to the State Engineer of the State Water Commission at the same time a surface mining permit...

  13. Texas Surface Coal Mining and Reclamation Act (Texas)

    Broader source: Energy.gov [DOE]

    The Railroad Commission of Texas regulates all surface mining activities for the extraction of coal. The Commission acts with the authority of the Texas Surface Coal Mining and Reclamation Act,...

  14. Mining and Gas and Oil Production (North Dakota)

    Broader source: Energy.gov [DOE]

    This chapter of the North Dakota Code contains provisions for oil, gas, and coal mining and the development of geothermal resources. This chapter addresses claims to mines, licensing and control of...

  15. Texas Uranium Exploration, Surface Mining, and Reclamation Act (Texas)

    Broader source: Energy.gov [DOE]

    The Railroad Commission of Texas is the regulatory authority for uranium surface mining. Law authorizes the Commission to assure that reclamation of mining sites is possible, to protect land owners...

  16. Chemistry & Biology Genome-Wide High-Throughput Mining

    E-Print Network [OSTI]

    Yin, Jun

    Chemistry & Biology Article Genome-Wide High-Throughput Mining of Natural-Product Biosynthetic Gene.01.006 SUMMARY We have developed a phage-display method for high-throughput mining of bacterial gene clus- ters

  17. Department of Mining & Minerals Engineering Graduate Program of Study

    E-Print Network [OSTI]

    Buehrer, R. Michael

    Department of Mining & Minerals Engineering Graduate Program of Study Name: ID#: Advisor: Graduate Members, with not less than three from the Department of Mining and Minerals Engineering and not less than

  18. Distributed Multivariate Regression Using Wavelet-based Collective Data Mining.

    E-Print Network [OSTI]

    Kargupta, Hilol

    an approach to the analysis of distributed, heterogeneous databases with distinct feature spacesDistributed Multivariate Regression Using Wavelet-based Collective Data Mining. Daryl E a method for distributed multivariate regression using wavelet- based Collective Data Mining (CDM

  19. Scholarship Opportunity for Graduate Studies School of Mining Engineering

    E-Print Network [OSTI]

    Wagner, Stephan

    of Mineral Resources and Reserves, School of Mining Engineering University of the Witwatersrand Tel: +27 11 and a keen interest in the mining industry. In alignment with this mission, the COSMO Consortium of global

  20. Dynamic Filtering and Mining Triggers in Mesoscale Meteorology Forecasting

    E-Print Network [OSTI]

    Plale, Beth

    Dynamic Filtering and Mining Triggers in Mesoscale Meteorology Forecasting Nithya N. Vijayakumar {rramachandran, xli}@itsc.uah.edu Abstract-- Mesoscale meteorology forecasting as a data driven application Triggers, Data Mining, Stream Processing, Meteorology Forecasting I. INTRODUCTION Mesoscale meteorologists