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1

Final Evaluation Report International Business Machines Corporation, MVS/ESA Operating System.  

National Technical Information Service (NTIS)

The National Security Agency (NSA) examined the security protection mechanisms provided by International Business Machines' MVS/ESA operating system. It was evaluated against the DoD Trusted Computer System Evaluation Criteria (TCSEC) and the evaluation t...

B. A. Maguschak C. Reese R. L. Williamson

1990-01-01

2

Stirling machine operating experience  

NASA Technical Reports Server (NTRS)

Numerous Stirling machines have been built and operated, but the operating experience of these machines is not well known. It is important to examine this operating experience in detail, because it largely substantiates the claim that Stirling machines are capable of reliable and lengthy lives. The amount of data that exists is impressive, considering that many of the machines that have been built are developmental machines intended to show proof of concept, and were not expected to operate for any lengthy period of time. Some Stirling machines (typically free-piston machines) achieve long life through non-contact bearings, while other Stirling machines (typically kinematic) have achieved long operating lives through regular seal and bearing replacements. In addition to engine and system testing, life testing of critical components is also considered.

Ross, Brad; Dudenhoefer, James E.

1991-01-01

3

Stirling machine operating experience  

SciTech Connect

Numerous Stirling machines have been built and operated, but the operating experience of these machines is not well known. It is important to examine this operating experience in detail, because it largely substantiates the claim that stirling machines are capable of reliable and lengthy operating lives. The amount of data that exists is impressive, considering that many of the machines that have been built are developmental machines intended to show proof of concept, and are not expected to operate for lengthy periods of time. Some Stirling machines (typically free-piston machines) achieve long life through non-contact bearings, while other Stirling machines (typically kinematic) have achieved long operating lives through regular seal and bearing replacements. In addition to engine and system testing, life testing of critical components is also considered. The record in this paper is not complete, due to the reluctance of some organizations to release operational data and because several organizations were not contacted. The authors intend to repeat this assessment in three years, hoping for even greater participation.

Ross, B. [Stirling Technology Co., Richland, WA (United States); Dudenhoefer, J.E. [Lewis Research Center, Cleveland, OH (United States)

1994-09-01

4

CRADA final report for CRADA number Y-1293-0185: Process modelling and machining operations development  

SciTech Connect

Lockheed Martin Energy Systems, Inc. and Ferro Corporation (formerly W. R. Grace, the original CRADA partner) have collaborated on an effort to develop techniques and processes for the cost-effective machining of ceramic components. The purpose of this effort was to develop a machining model, and grinding equipment machines and techniques for fabricating precision ceramic components. This project was designed to support Department of Energy (DOE) technical needs in manufacturing hard materials as well as enabling U.S. industry to maintain a position of leadership in the production of precision grinding machines and the machining of structural ceramic components.

Arnold, J.B.; Kruse, K.L.; Stone, P.K. [and others

1996-09-16

5

Machine Tool Operation, Course Description.  

ERIC Educational Resources Information Center

Prepared by an instructor and curriculum specialists, this course of study was designed to meet the individual needs of the dropout and/or hard-core unemployed youth by providing them skill training, related information, and supportive services knowledge in machine tool operation. The achievement level of each student is determined at entry, and…

Denny, Walter E.; Anderson, Floyd L.

6

From Operational Semantics for Abstract Machines  

Microsoft Academic Search

We consider the problem of mechanically constructing abstract machines from operational semantics, producing intermediate-level specifications of evaluators guaranteed to be correct with respect to the operational semantics. We construct these machines by repeatedly applying correctness-preserving transformations to operational semantics until the resulting specifications have the form of abstract machines. Though not automatable in general, this approach to constructing machine implementations

John Hannan; Dale Miller

1992-01-01

7

TEACHING MACHINE STUDY. FINAL REPORT.  

ERIC Educational Resources Information Center

IN AN INVESTIGATION OF THE POTENTIAL OF TEACHING MACHINES IN THE JOB CORPS MATHEMATICS PROGRAM, EXISTING JOB CORPS ARITHMETIC MATERIAL WAS PREPARED FOR INSTRUCTION BY MACHINE AND PROGRAMED TEXT, AND THEN FIELD TESTED. REVISIONS WERE MADE, AND A PROGRAMED MANUAL FOR INSTRUCTORS WRITTEN, AFTER WHICH A NEW FIELD TEST WAS RUN. IN THE INITIAL FIELD…

EVCO, Albuquerque, NM.

8

PASM (partitionable SIMD/MIND machine) parallel-processing system: Hardware design and intelligent operating system concepts. Final report  

SciTech Connect

Many of today's scientific and industrial problems require enormous computing power. Since circuit switching speeds are reaching fundamental limits, avenues to speed up computations other than that using faster components are being explored. One such avenue is the use of parallelism. PASM is a dynamically reconfigurable SIMD/MIMD parallel processing system with up to 1,024 processing elements (PEs). It can be dynamically reconfigured to work as one or more SIMD (single instruction stream - multiple data stream) and/or MIMD (multiple instruction stream - multiple data stream) machines. A prototype with 30 MC68010 microprocessors, including 16 PEs in the computational engine, is being designed and constructed. The design of the prototype hardware is described, as well as the design tradeoffs that were made. Extending the current prototype by the addition of a Network Interface Unit (NIU) to each PE is proposed. Such an NIU significantly enhances interprocessor communication by offloading communication overhead from the PE's main CPU. One way to extend the prototype design to a system with 1,024 processors in the computational engine is presented. The powerful reconfiguration capabilities of PASM can be fully utilized only if all tradeoffs influencing reconfiguration are known.

Schwederski, T.

1986-07-01

9

Operation of the TEMPO machine  

SciTech Connect

The TEMPO machine is a repetitively pulsed, high-voltage driver for experimental microwave generating devices. Three units have been built. TEMPO has a transformer-charged, water-insulated Blumlein directly coupled to the vacuum diode. The Blumlein has a relatively high impedance (20-..cap omega..) strip-type, pulse-forming transmission line (PFL) designed to minimize size. Stray capacitance and enhanced electric fields along the edges of the PFL are controlled by lining the tank in which the Blumlein is housed with polyvinyl chloride (PVC) plastic sheet. During the initial stage of operation, problems with breakdowns in the plastic occurred that necessitated replacing the liner with either polyethylene or polypropylene. During the same period, problems with the power supplies and high voltage switch performance were addressed. These modifications and their results are discussed in the following sections.

Rohwein, G.J.; Lawson, R.N.; Lancaster, K.T.

1987-01-01

10

Standardized Curriculum for Machine Tool Operation/Machine Shop.  

ERIC Educational Resources Information Center

Standardized vocational education course titles and core contents for two courses in Mississippi are provided: machine tool operation/machine shop I and II. The first course contains the following units: (1) orientation; (2) shop safety; (3) shop math; (4) measuring tools and instruments; (5) hand and bench tools; (6) blueprint reading; (7)…

Mississippi State Dept. of Education, Jackson. Office of Vocational, Technical and Adult Education.

11

Machine vision for real time orbital operations  

NASA Technical Reports Server (NTRS)

Machine vision for automation and robotic operation of Space Station era systems has the potential for increasing the efficiency of orbital servicing, repair, assembly and docking tasks. A machine vision research project is described in which a TV camera is used for inputing visual data to a computer so that image processing may be achieved for real time control of these orbital operations. A technique has resulted from this research which reduces computer memory requirements and greatly increases typical computational speed such that it has the potential for development into a real time orbital machine vision system. This technique is called AI BOSS (Analysis of Images by Box Scan and Syntax).

Vinz, Frank L.

1988-01-01

12

OPERATION OF MACHINE TOOLS AT HIGH ALTITUDES  

Microsoft Academic Search

Numerous small machine shops are operated on the high plateaux and in the valleys of the Andean Mountain system in South America servicing the needs of the several million inhabitants of this region. However, the products of those workshops situated at high altitudes appear to be unduly expensive to manufacture and to lack accuracy in dimensions and quality of finish.

E. R. TICHAUER

1963-01-01

13

A remotely controlled robot operates construction machines  

Microsoft Academic Search

A Tokyo-based construction company, Fujita Corporation, has developed the unmanned “Tele-Earthwork System”. It features a remotely controlled robot which manipulates conventional construction machines (such as backhoes and bulldozers) in the same way as a human operator. The robot can be easily disassembled into several sub assemblies (usually stored as disassembled parts in individual packages) for easy transportation. Following shipment to

Yoshihiro Kusuda

2003-01-01

14

Fault tolerant operation of switched reluctance machine  

NASA Astrophysics Data System (ADS)

The energy crisis and environmental challenges have driven industry towards more energy efficient solutions. With nearly 60% of electricity consumed by various electric machines in industry sector, advancement in the efficiency of the electric drive system is of vital importance. Adjustable speed drive system (ASDS) provides excellent speed regulation and dynamic performance as well as dramatically improved system efficiency compared with conventional motors without electronics drives. Industry has witnessed tremendous grow in ASDS applications not only as a driving force but also as an electric auxiliary system for replacing bulky and low efficiency auxiliary hydraulic and mechanical systems. With the vast penetration of ASDS, its fault tolerant operation capability is more widely recognized as an important feature of drive performance especially for aerospace, automotive applications and other industrial drive applications demanding high reliability. The Switched Reluctance Machine (SRM), a low cost, highly reliable electric machine with fault tolerant operation capability, has drawn substantial attention in the past three decades. Nevertheless, SRM is not free of fault. Certain faults such as converter faults, sensor faults, winding shorts, eccentricity and position sensor faults are commonly shared among all ASDS. In this dissertation, a thorough understanding of various faults and their influence on transient and steady state performance of SRM is developed via simulation and experimental study, providing necessary knowledge for fault detection and post fault management. Lumped parameter models are established for fast real time simulation and drive control. Based on the behavior of the faults, a fault detection scheme is developed for the purpose of fast and reliable fault diagnosis. In order to improve the SRM power and torque capacity under faults, the maximum torque per ampere excitation are conceptualized and validated through theoretical analysis and experiments. With the proposed optimal waveform, torque production is greatly improved under the same Root Mean Square (RMS) current constraint. Additionally, position sensorless operation methods under phase faults are investigated to account for the combination of physical position sensor and phase winding faults. A comprehensive solution for position sensorless operation under single and multiple phases fault are proposed and validated through experiments. Continuous position sensorless operation with seamless transition between various numbers of phase fault is achieved.

Wang, Wei

15

On-machine dimensional verification. Final report  

SciTech Connect

General technology for automating in-process verification of machined products has been studied and implemented on a variety of machines and products at AlliedSignal Inc., Kansas City Division (KCD). Tests have been performed to establish system accuracy and probe reliability on two numerically controlled machining centers. Commercial software has been revised, and new cycles such as skew check and skew machining, have been developed to enhance and expand probing capabilities. Probe benefits have been demonstrated in the area of setup, cycle time, part quality, tooling cost, and product sampling.

Rendulic, W.

1993-08-01

16

Visualization of task switching strategy of machine operation  

Microsoft Academic Search

For a future advanced machine, functions for supporting human by considering not only the situation around the machine but also the operator's skill-level are required. Therefore, an establishment of a method to evaluate the skill is expected. On the general machine manipulation, the task scheduling and the adequate selecting of operation commands are important to execute sequential task successfully. In

Satoshi Suzuki

2009-01-01

17

Evaluation of Coordinate Measuring Machines. Final Report.  

National Technical Information Service (NTIS)

The goal of this project was to develop and implement a method which evaluates large coordinate measuring machines (CMM) and estimates their measuring capabilities within a specified work volume. Five CMMs were selected for evaluation. The methodology use...

R. J. Russell

1985-01-01

18

Mississippi Curriculum Framework for Machine Tool Operation/Machine Shop (Program CIP: 48.0503--Machine Shop Assistant). Secondary Programs.  

ERIC Educational Resources Information Center

This document, which reflects Mississippi's statutory requirement that instructional programs be based on core curricula and performance-based assessment, contains outlines of the instructional units required in local instructional management plans and daily lesson plans for machine tool operation/machine shop I and II. Presented first are a…

Mississippi Research and Curriculum Unit for Vocational and Technical Education, State College.

19

Machine Shop Operations--2. Milling Machine, Heat Treatment of Metals, and Grinders.  

ERIC Educational Resources Information Center

This manual was prepared for the student who plans to enter the machine shop field. The 20 selected jobs provide the student with knowledge and step-by-step procedures for the operation of milling machines. The text is organized so that each job has an objective, tools needed, step-by-step instructions, a progress quiz, and space for reference,…

Currao, Joseph; Usarzewicz, Louis

20

HUNTER 20 MATCHPLATE MOLDING MACHINE, OPERATING THE SAME AS THE ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

HUNTER 20 MATCHPLATE MOLDING MACHINE, OPERATING THE SAME AS THE HUNTER 10 AND OTHER HUNTER 20 COMPRESSES BOTH MOLD HALVES OVER A DOUBLE-SIDED MATCH PLATE PATTERN. DENNIS GRAY TESTS A MOLD'S HARDNESS TO ENSURE SAND MIXTURE AND MACHINE COMPRESSIBILITY ARE CORRECT. - Southern Ductile Casting Company, Casting, 2217 Carolina Avenue, Bessemer, Jefferson County, AL

21

INTERIOR VIEW WITH CASTING MACHINE AND CASTING FOREMAN OBSERVING OPERATION ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

INTERIOR VIEW WITH CASTING MACHINE AND CASTING FOREMAN OBSERVING OPERATION TO ENSURE MAXIMUM PRODUCTION AND QUALITY. - McWane Cast Iron Pipe Company, Pipe Casting Area, 1201 Vanderbilt Road, Birmingham, Jefferson County, AL

22

Perspex machine III: continuity over the Turing operations  

NASA Astrophysics Data System (ADS)

The perspex machine is a continuous machine that performs perspective transformations. It is a super-Turing machine that contains the Turing machine at discrete locations in perspex space. We show that perspex spaces can be constructed so that all of the operations in a Turing program lie in a continuum of similar operations in the space, except for the Turing halt which is always a discontinuous operation. We then show how to convolve a Turing program to produce an isolinear program that it is robust to missing instructions and degrades gracefully when started incorrectly, sometimes even recovering in performance. We hypothesize that animal brains are similarly robust and graceful because animal neurons share the geometrical properties of the perspex machine. Furthermore, convolution of Turing programs makes possible the band-pass filtering and reconstruction of programs. Global processing can then be obtained by executing the broad bands before the finer ones. Hence, any existing computer program can be compiled on a perspex machine to make it global in operation, robust to damage, and degrade gracefully in the presence of error. The three "Holy Grails" of AI -- globality, robustness, and graceful degradation -- can be supplied by a compiler. They do not require specific programming in individual cases because they are geometrical properties of the perspex machine.

Anderson, James A. D. W.

2004-12-01

23

Perspex machine III: continuity over the Turing operations  

NASA Astrophysics Data System (ADS)

The perspex machine is a continuous machine that performs perspective transformations. It is a super-Turing machine that contains the Turing machine at discrete locations in perspex space. We show that perspex spaces can be constructed so that all of the operations in a Turing program lie in a continuum of similar operations in the space, except for the Turing halt which is always a discontinuous operation. We then show how to convolve a Turing program to produce an isolinear program that it is robust to missing instructions and degrades gracefully when started incorrectly, sometimes even recovering in performance. We hypothesize that animal brains are similarly robust and graceful because animal neurons share the geometrical properties of the perspex machine. Furthermore, convolution of Turing programs makes possible the band-pass filtering and reconstruction of programs. Global processing can then be obtained by executing the broad bands before the finer ones. Hence, any existing computer program can be compiled on a perspex machine to make it global in operation, robust to damage, and degrade gracefully in the presence of error. The three "Holy Grails" of AI -- globality, robustness, and graceful degradation -- can be supplied by a compiler. They do not require specific programming in individual cases because they are geometrical properties of the perspex machine.

Anderson, James A. D. W.

2005-01-01

24

76 FR 174 - International Business Machines (IBM), Global Sales Operations Organization, Sales and...  

Federal Register 2010, 2011, 2012, 2013

...575D] International Business Machines (IBM), Global Sales Operations Organization...WV; International Business Machines (IBM), Global Sales Operations Organization...workers of International Business Machines (IBM), Global Sales Operations...

2011-01-03

25

TRUFLO GONDOLA, USED WITH THE HUNTER 10 MOLDING MACHINE, OPERATES ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

TRUFLO GONDOLA, USED WITH THE HUNTER 10 MOLDING MACHINE, OPERATES THE SAME AS THE TWO LARGER TRUFLOS USED IN CONJUNCTION WITH THE TWO HUNTER 20S. EACH GONDOLA IS CONNECTED TO THE NEXT AND RIDES ON A SINGLE TRACK RAIL FROM MOLDING MACHINES THROUGH POURING AREAS CARRYING A MOLD AROUND TWICE BEFORE THE MOLD IS PUSHED OFF ONTO A VIBRATING SHAKEOUT CONVEYOR. - Southern Ductile Casting Company, Casting, 2217 Carolina Avenue, Bessemer, Jefferson County, AL

26

Laboratory directed research and development final report: Intelligent tools for on-machine acceptance of precision machined components  

Microsoft Academic Search

On-Machine Acceptance (OMA) is an agile manufacturing concept being developed for machine tools at SNL. The concept behind OMA is the integration of product design, fabrication, and qualification processes by using the machining center as a fabrication and inspection tool. This report documents the final results of a Laboratory Directed Research and Development effort to qualify OMA.

N. G. Christensen; L. D. Harwell; A. Hazelton

1997-01-01

27

Laboratory directed research and development final report: Intelligent tools for on-machine acceptance of precision machined components  

SciTech Connect

On-Machine Acceptance (OMA) is an agile manufacturing concept being developed for machine tools at SNL. The concept behind OMA is the integration of product design, fabrication, and qualification processes by using the machining center as a fabrication and inspection tool. This report documents the final results of a Laboratory Directed Research and Development effort to qualify OMA.

Christensen, N.G.; Harwell, L.D.; Hazelton, A.

1997-02-01

28

State Machine Operation of the MICE Cooling Channel  

NASA Astrophysics Data System (ADS)

The Muon Ionization Cooling Experiment (MICE) is a demonstration experiment to prove the feasibility of cooling a beam of muons for use in a Neutrino Factory and/or Muon Collider. The MICE cooling channel is a section of a modified Study II cooling channel which will provide a 10% reduction in beam emittance. In order to ensure a reliable measurement, MICE will measure the beam emittance before and after the cooling channel at the level of 1%, a relative measurement of 0.001. This renders MICE a precision experiment which requires strict controls and monitoring of all experimental parameters in order to control systematic errors. The MICE Controls and Monitoring system is based on EPICS and integrates with the DAQ, Data monitoring systems, and a configuration database. The cooling channel for MICE has between 12 and 18 superconductnig solenoid coils in 3 to 7 magnets, depending on the staged development of the experiment. The magnets are coaxial and in close proximity which requires coordinated operation of the magnets when ramping, responding to quench conditions, and quench recovery. To reliably manage the operation of the magnets, MICE is implementing state machines for each magnet and an over-arching state machine for the magnets integrated in the cooling channel. The state machine transitions and operating parameters are stored/restored to/from the configuration database and coupled with MICE Run Control. Proper implementation of the state machines will not only ensure safe operation of the magnets, but will help ensure reliable data quality. A description of MICE, details of the state machines, and lessons learned from use of the state machines in recent magnet training tests will be discussed.

Hanlet, Pierrick; Mice collaboration

2014-06-01

29

100. ARAIII. Operations with drilling tool used in machining of ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

100. ARA-III. Operations with drilling tool used in machining of ML-1 pressure vessel. Receptacle contains filings. July 12, 1963. Ineel photo no. 63-4456. Photographer: Benson. - Idaho National Engineering Laboratory, Army Reactors Experimental Area, Scoville, Butte County, ID

30

An automatic identification of phase inductance for operation of switched reluctance machines without position sensor  

Microsoft Academic Search

This paper describes a method to operate a switched reluctance machine (SRM) sensorless with a precise position estimation but without the necessity of a prior known machine characteristic. When a machine is connected to the inverter for the first time, an initialization sequence is started to determine the inductance profile of the machine automatically. Within this sequence the machine is

Daniel van Treek; Philipp Matuschek; Helge J. Brauer; Timo Schoenen; Rik W. De Doncker

2009-01-01

31

Operation Soft Boot. Final Report.  

ERIC Educational Resources Information Center

Operation Soft Boot was a program designed to develop a computer literacy curriculum for use with adult basic education (ABE) students at their educational level. Computer literacy instruction included a review of the component parts of a personal computer system and their operation and a review of basic keyboarding skills. Instruction also…

Molek, Carol

32

Multifrequency Factory Operations. Final Report.  

National Technical Information Service (NTIS)

This study examined the potential for energy savings which exists when a factory is operated from multiple frequency electric power. In a previous study it was demonstrated that power hand tools operating from 360 to 400 Hz electric power achieve signific...

1980-01-01

33

Multifrequency Factor Operations. Final Report.  

National Technical Information Service (NTIS)

The potential for energy savings which exists when a factory is operated from multiple frequency electric power is examined. In a previous study it was demonstrated that power hand tools operating from 360 to 400 Hz electric power achieve significant ener...

1979-01-01

34

Considerations for human-machine interfaces in tele-operations  

NASA Technical Reports Server (NTRS)

Numerous factors impact on the efficiency of tele-operative manipulative work. Generally, these are related to the physical environment of the tele-operator and how he interfaces with robotic control consoles. The capabilities of the operator can be influenced by considerations such as temperature, eye strain, body fatigue, and boredom created by repetitive work tasks. In addition, the successful combination of man and machine will, in part, be determined by the configuration of the visual and physical interfaces available to the teleoperator. The design and operation of system components such as full-scale and mini-master manipulator controllers, servo joysticks, and video monitors will have a direct impact on operational efficiency. As a result, the local environment and the interaction of the operator with the robotic control console have a substantial effect on mission productivity.

Newport, Curt

1991-01-01

35

Case-Based Reasoning Approach to Operator Assessment and Operator Machine Interface Enhancement.  

National Technical Information Service (NTIS)

In Phase 1 we investigated a case-based reasoning (CBR) approach to Operator Assessment and Operator Machine Interface Enhancement for the LAMPS SH-60R Multi Mission Helicopter Upgrade (MMHU). We Developed a limited prototype case-based Operator Assessmen...

R. Stottler A. Davis

1998-01-01

36

Uncontrolled generator operation of interior PM synchronous machines following high-speed inverter shutdown  

Microsoft Academic Search

Interior permanent magnet (IPM) synchronous machine drives are vulnerable to a special fault mode when gating is suddenly removed from the inverter switches during high-speed operation. The resulting IPM machine operation as a generator in combination with an uncontrolled rectifier must be properly understood and accounted for in the machine design to avoid damage to either the machine or inverter.

Thomas M. Jahns; Vahe Caliskan

1999-01-01

37

Uncontrolled generator operation of interior PM synchronous machines following high-speed inverter shutdown  

Microsoft Academic Search

Interior permanent magnet (IPM) synchronous machine drives are vulnerable to a special fault mode when gating is suddenly removed from the inverter switches during high-speed operation. The resulting IPM machine operation as a generator in combination with an uncontrolled rectifier must be properly understood and accounted for in the machine design to avoid damage to either the machine or inverter.

Thomas M. Jahns

1998-01-01

38

Operation GREENHOUSE-1951. Final report  

SciTech Connect

GREENHOUSE was a four-detonation atmospheric nuclear weapon's test series conducted in the Marshall Islands at Enewetak Atoll in April and May 1951. This is a report of DOD personnel in GREENHOUSE with an emphasis on operational radiological safety.

Berkhouse, L.; Davis, S.E.; Gladeck, F.R.; Hallowell, J.H.; Jones, C.B.

1983-06-15

39

Influence Of Forming Machine Stiffness On Product Quality In Hot Forging Operations  

NASA Astrophysics Data System (ADS)

The quality of forged components is strictly dependent on the micro-structural phenomena occurring during the manufacturing chain that may cause significant changes in the physical and mechanical features of the final product. Some of these changes take place during the deformation phase and depend on the forming machine characteristics in term of machine kinematics, total elastic deflections of the press system and contact-time. The press stiffness influences the velocity-versus-time curve under load, varying the contact pressure and the heat transfer between the tools and the workpiece and, consequently, the global process conditions. This paper deals with the evaluation of the influence that the forging machine exerts on the process parameters and the quality of the final component in terms of its microstructure distribution after forging. The approach is based on a simulative environment that combines experimental measurements, FE simulation and inverse analysis techniques. A case study, in which operating conditions approximate hot forging of a turbine aerofoil section, is presented. Results of experiments show the influence of machine characteristics on the quality of final product.

Croin, M.; Ghiotti, A.; Bruschi, S.

2007-04-01

40

Multiple Lead-Electrical Discharge Machining. Final Report.  

National Technical Information Service (NTIS)

Multiple lead-electrical discharge machining (ML-EDM) was investigated to develop the capability and demonstrate the feasibility of applying state-of-the-art electrical discharge machining (EDM) to the manufacturing of mechanical hardware. Two parts selec...

R. W. Brockhoff

1985-01-01

41

Research in Chinese-English Machine Translation. Final Report.  

ERIC Educational Resources Information Center

This report documents results of a two-year effort toward the study and investigation of the design of a prototype system for Chinese-English machine translation in the general area of physics. Previous work in Chinese-English machine translation is reviewed. Grammatical considerations in machine translation are discussed and detailed aspects of…

Wang, William S-Y.; And Others

42

Fusing human and machine skills for remote robotic operations  

NASA Technical Reports Server (NTRS)

The question of how computer assists can improve teleoperator trajectory tracking during both free and force-constrained motions is addressed. Computer graphics techniques which enable the human operator to both visualize and predict detailed 3D trajectories in real-time are reported. Man-machine interactive control procedures for better management of manipulator contact forces and positioning are also described. It is found that collectively, these novel advanced teleoperations techniques both enhance system performance and significantly reduce control problems long associated with teleoperations under time delay. Ongoing robotic simulations of the 1984 space shuttle Solar Maximum EVA Repair Mission are briefly described.

Schenker, Paul S.; Kim, Won S.; Venema, Steven C.; Bejczy, Antal K.

1991-01-01

43

MACHINE PROTECTION SYSTEM FOR CONCURRENT OPERATION OF RHIC AND BLIP.  

SciTech Connect

The Brookhaven 200MeV linac is a multipurpose machine used to inject low intensity polarized protons for RHIC (Relativistic Heavy Ion Collider), as well as to inject high intensity protons to BLIP (Brookhaven Linac Isotope Producer), a medical isotope production facility. If high intensity protons were injected to RHIC by mistake, administrative radiation limits could be exceeded or sensitive electronics could be damaged. In the past, the changeover from polarized proton to high intensity proton operation has been a lengthy process, thereby never allowing the two programs to run simultaneously. To remedy this situation and allow concurrent operation of RHIC and BLIP, an active interlock system has been designed to monitor current levels in the AGS using two current transformers with fail safe circuitry and associated electronics to inhibit beam to RHIC if high intensity currents are detected.

WILINSKI, M.; BELLAVIA, S.; GLENN, J.W.; MAUSNER, L.F.; UNGER, K.L.

2005-05-16

44

Broken rotor bar detection in induction machines with transient operating speeds  

Microsoft Academic Search

Previous work on condition monitoring of induction machines has focused on steady-state speed operation. Here, a new concept is introduced based on an analysis of transient machine currents. The technique centers around the extraction and removal of the fundamental component of the current and analyzing the residual current using wavelets. Test results of induction machines operating both as a motor

H. Douglas; P. Pillay; A. K. Ziarani

2005-01-01

45

High-speed machining of aluminum: Final report  

SciTech Connect

High-speed machining of aluminum alloys has become an established manufacturing process for a variety of production parts at Allied- Signal Inc., Kansas City Division. Some of these parts include a Mounting Deck, a Forward Retainer, and a Mount. In the course of developing the production machining processes for these parts, general tooling and machining parameters were developed that aid in the application of this technology to future parts. High-speed machining is a cost effective, viable manufacturing process for aluminum material when correct part selection criteria and processing parameters are applied. 5 refs., 12 figs., 7 tabs.

Heine, S.J.

1989-07-01

46

A Rational Deconstruction of Landin's SECD Machine with the J Operator  

Microsoft Academic Search

Landin's SECD machine was the first abstract machine for applicative\\u000aexpressions, i.e., functional programs. Landin's J operator was the first\\u000acontrol operator for functional languages, and was specified by an extension of\\u000athe SECD machine. We present a family of evaluation functions corresponding to\\u000athis extension of the SECD machine, using a series of elementary\\u000atransformations (transformation into continu-ation-passing style

Olivier Danvy; Kevin Millikin; Robert Tennent

2008-01-01

47

CNC water-jet machining and cutting center. Final report.  

National Technical Information Service (NTIS)

CNC water-jet machining was investigated to determine the potential applications and cost-effectiveness that would result by establishing this capability in the engineering shops of Allied-Signal Inc., Kansas City Division (KCD). Both conductive and nonco...

D. C. Bartlett

1991-01-01

48

Preliminary Machining Study on Fluoroberyllate Laser Glass. Final Report.  

National Technical Information Service (NTIS)

A series of scribe tests of fluoroberyllate glass using a radiused diamond tool indicated the possibility of this glass being a candidate for diamond machining. Based on the scribe tests, an effort was undertaken using existing conventional equipment to e...

P. C. Baker R. T. Maney G. M. Sanger

1979-01-01

49

Machinery Management. FMO: Fundamentals of Machine Operation. Third Edition.  

ERIC Educational Resources Information Center

This text is intended to provide a basic understanding of selecting, maintaining, and managing farm machinery. The following topics are covered in the individual chapters: dealing with typical problems in farm machinery management; measuring machine capacity; improving field efficiency; matching machine size and capacity; estimating power…

Bowers, Wendell

50

The REX-ISOLDE charge breeder as an operational machine  

SciTech Connect

The charge breeding system of radioactive beam experiment at ISOLDE (REX-ISOLDE), consisting of a large Penning trap in combination with an electron-beam ion source (EBIS), is now a mature concept after having delivered radioactive beams for postacceleration to a number of experiments for three years. The system, preparing ions prior to injection into a compact linear accelerator, has shown to be versatile in terms of the ion species and energies that can be delivered. During the experimental periods 2004 and 2005 a significant part of the ISOLDE beam time was dedicated to REX-ISOLDE experiments. Ion masses in the range between A=7 and 153 have been handled with record efficiencies. High-intensity as well as very-short-lived isotope beams were proven to be feasible. Continuous injection into the EBIS has also been successfully tested. Two means of suppressing unwanted beam contaminations were tested and are now in use. In addition, the experience gained from the trap-EBIS concept from a machine operational point of view will be discussed and the limitations described.

Wenander, F.; Delahaye, P.; Scrivens, R.; Savreux, R. [CERN, 1211 Geneva-23, 1211 (Switzerland); Sektion Physik, Ludwig-Maximilians-Universitaet, Muenchen, D-85748 Garching (Germany); 1211 Geneva-23, 1211 Switzerland (Switzerland)

2006-03-15

51

Performance Test Development in Machine Shop: Appendix H. Final Report.  

ERIC Educational Resources Information Center

This is one of the outcomes of the work of the Massachusetts Evaluation Service Center for Occupational Education (ESCOE). The first part of this document is an overview of the Performance Test Development Project. The remainder of the document explores machine shop curriculum in terms of terminal behavioral objectives which were grouped by…

Fortune, Jim C.

52

Faulty Operations of a PM Fractional-Slot Machine With a Dual Three-Phase Winding  

Microsoft Academic Search

The permanent-magnet (PM) machine with dual three-phase windings is proposed for applications requiring con- tinuous operating even under a partial fault. The two windings are supplied by two separate inverters. Thus, in the event of a fault of one winding, this is disconnected, and the machine continues to be operated by means of the healthy winding. This paper investigates the

Massimo Barcaro; Nicola Bianchi; Freddy Magnussen

2011-01-01

53

Operations Concept for the TCCC (Tower Control Computer Complex) Man-Machine Interface.  

National Technical Information Service (NTIS)

Operations Concept for the TCCC Man-Machine Interface analyzes the tower Air Traffic Controller's job in the Tower Control Computer Complex (TCCC) environment. It considers the operations in today's towers and the automated capabilities planned for the TC...

H. L. Ammerman E. S. Becker L. J. Bergen D. K. Davies E. E. Inman

1986-01-01

54

OTEC-1 test operations experience. Final report  

SciTech Connect

During Phase III, the complete integrated system was operated, and information was obtained on the performance of the test article, the performance of the seawater and ammonia systems, the operation of the platform and moor systems, the effects of biofouling countermeasures, and the effects of the OTEC cycle on the environment. After several months spent in completing construction of the test system and checking out and repairing the various systems, 4 months of test operations were conducted before funding constraints caused the discontinuation of the test program. Plans were made for long-term storage and/or disposition of the test facility. The OEC test platform is currently located at Pearl Harbor, in the US Navy Inactive Reserve Fleet anchorage. The CWP was placed in underwater storage adjacent to the moor, awaiting a decision on final disposition. In October 1982, the CWP was recovered and custody given to the State of Hawaii. Although the test period lasted only about 4 months, deployment and at-sea operation of a large-scale OTEC plant was demonstrated, and information was obtained towards satisfying each of the objectives of the OTEC-1 project. This document summarizes the OTEC-1 test operations experience, discusses technical lessons learned, and makes recommendations for future OTEC plants.

Hoshide, R.K.; Klein, A.; Polino, D.L.; Poucher, F.W.

1983-07-15

55

Computer Optimization of Machining Parameters: The performance of numerically-contolled machine tools in improved by computer selection of operating parameters.  

National Technical Information Service (NTIS)

This citation summarizes a one-page announcement of technology available for utilization. A machining-optimization (MACHOP) computer program is designed to assist operators in selecting machining parameters to produceparts at optimum cost and production r...

1981-01-01

56

Operator-machine interface at a large laser-fusion facility  

Microsoft Academic Search

The operator-machine interface at the Antares Laser Facility provides the operator with a means of controlling the laser system and obtaining operational and performance information. The goal of this interface is to provide an operator with access to the control system in a comfortable way, and to facilitate meeting operational requirements. We describe the philosophy and requirements behind this interface,

J. G. Sutton; J. A. Howell

1982-01-01

57

Surface Inspection Machine Infrared (SIMIR). Final CRADA report  

SciTech Connect

This Cooperative Research and Development Agreement was a one year effort to make the surface inspection machine based on diffuse reflectance infrared spectroscopy (Surface Inspection Machine-Infrared, SIMIR), being developed by Surface Optics Corporation, perform to its highest potential as a practical, portable surface inspection machine. The design function of the SIMIR is to inspect metal surfaces for cleanliness (stains). The system is also capable of evaluating graphite-resin systems for cure and heat damage, and for measuring the effects of moisture exposure on lithium hydride, corrosion on uranium metal, and the constituents of and contamination on wood, paper, and fabrics. Over the period of the CRADA, extensive experience with the use of the SIMIR for surface cleanliness measurements have been achieved through collaborations with NASA and the Army. The SIMIR was made available to the AMTEX CRADA for Finish on Yarn where it made a very significant contribution. The SIMIR was the foundation of a Forest Products CRADA that was developed over the time interval of this CRADA. Surface Optics Corporation and the SIMIR have been introduced to the chemical spectroscopy on-line analysis market and have made staffing additions and arrangements for international marketing of the SIMIR as an on-line surface inspection device. LMES has been introduced to a wide range of aerospace applications, the research and fabrication skills of Surface Optics Corporation, has gained extensive experience in the areas of surface cleanliness from collaborations with NASA and the Army, and an extensive introduction to the textile and forest products industries. The SIMIR, marketed as the SOC-400, has filled an important new technology need in the DOE-DP Enhanced Surveillance Program with instruments delivered to or on order by LMES, LANL, LLNL, and Pantex, where extensive collaborations are underway to implement and improve this technology.

Powell, G.L. [Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States); Neu, J.T.; Beecroft, M. [Surface Optics Corp., San Diego, CA (United States)

1997-02-28

58

Operational semantics of the Java Card Virtual Machine  

Microsoft Academic Search

Java Card Virtual Machine Language. We use the instruction set and the programstructures proposed in [1]. We define a small-step relation between program con-figurations, including rules for exception handling, arrays and subroutines. We alsoinclude the basic structures needed to model object ownership and the Java Cardfirewall.

Igor A. Siveroni

2004-01-01

59

A neural network process model for abrasive flow machining operations  

Microsoft Academic Search

This paper describes the development of a predictive process modeling system for the abrasive flow machining (AFM) process. This process is used for polishing and surface removal of workpieces with an internal flow path. The core of the process modeling system is a set of neural network models that predicts surface finish and dimensional change. These neural network models are

Kimberly L. Petri; Richard E. Billo; Bopaya Bidanda

1998-01-01

60

Characteristics and treatability of oil-bearing wastes from aluminum alloy machining operations  

Microsoft Academic Search

Enomoto Industry Co., exclusively uses water-based cutting fluids in its aluminum alloy machining operations. Since the cost of disposal can be much greater than the cost of purchase, the treatability of spent cutting fluids is becoming a major criterion for cutting fluid selection. Samples were collected from the machining lines at Enomoto's facility to determine their characteristics and evaluate their

Luke Chen; Chueh-Chen Hsieh; John Wetherbee; Chen-Lu Yang

2008-01-01

61

Development of a mass transfer machine for gas\\/liquid operations in the absence of gravity  

Microsoft Academic Search

The mass transfer machine that was developed for countercurrent gas\\/liquid operations is distinguished by an extremely high mass transfer efficiency per unit volume and by a very small overall volume. The design of the mass transfer machine, the experimental setup, the measuring equipment, and some of the results obtained are discussed. In order to understand the fluid dynamics of the

H. Brauer; W. Gaebelein

1978-01-01

62

Fatality Assessment and Control Evaluation (FACE) Report for Oregon: Operator Crushed While Repairing Running Machine.  

National Technical Information Service (NTIS)

On March 17, 2005, a 61-year-old woodworker operating a glue-press machine at a wood-products firm was killed while attempting to replace a glue tray while the machine was running. The glue tray had been removed to correct a glue-dripping problem. The pre...

2006-01-01

63

Methods, systems and apparatus for controlling operation of two alternating current (AC) machines  

SciTech Connect

A system is provided for controlling two alternating current (AC) machines via a five-phase PWM inverter module. The system comprises a first control loop, a second control loop, and a current command adjustment module. The current command adjustment module operates in conjunction with the first control loop and the second control loop to continuously adjust current command signals that control the first AC machine and the second AC machine such that they share the input voltage available to them without compromising the target mechanical output power of either machine. This way, even when the phase voltage available to either one of the machines decreases, that machine outputs its target mechanical output power.

Gallegos-Lopez, Gabriel (Torrance, CA); Nagashima, James M. (Cerritos, CA); Perisic, Milun (Torrance, CA); Hiti, Silva (Redondo Beach, CA)

2012-06-05

64

Preliminary design of atlas pulsed power machine. Final report  

SciTech Connect

During the contract period from March 95 to March 96 I participated in the preliminary design of the Atlas pulsed power machine. As part of this task I performed of the order of 1000 circuit simulations for many different bank configurations, opening switches, and loads, and about 100 electrostatic field calculations. Results of the calculations were provided at regular Atlas design meetings or in the form of memorandums. I have almost completed the development of a 2D disk transmission line code to more accurately calculate asymmetric transient current and voltage caused by azimuthal variations, including switch timing jitter and local arc faults. This code is attached as a subroutine to the circuit simulation program. The purpose for most of the simulations was to provide information on bank damping requirements and load energy ranges for the different circuit configurations. A minimum transmission line insulation depth was determined from calculating the maximum expected dynamic load back voltage (I{times}{sup dL}/{sub dt}). Other simulations included fault effects, transmission line heating effects (including diffusion, melting, vaporization, ionization), and transmission line transients under various conditions. The line fault simulations using a lumped constant approximation to the 2D disk line provided useful information but even with about 600 elements, it has an upper limit on mode frequencies and tends to exaggerate some modes. Electrostatic (2D) field calculations were used to estimate fields of the transmission lines, insulators, and rail gap switches. Design of conductor surface contours to minimize the field near an insulator stack was one result of these calculations. Effects of biasing and insulator modifications of the rail gap switch was determined.

Gribble, R.F.

1996-04-03

65

Musculoskeletal disorders of the neck and shoulders in female sewing machine operators: prevalence, incidence, and prognosis  

Microsoft Academic Search

OBJECTIVESTo assess the occurrence and persistence of two restrictively defined neck-shoulder disorders among sewing machine operators. To assess factors associated with the development of neck-shoulder disorder and prognostic factors for remaining a case, when disorders were already present.METHODSIn an initial group of 243 sewing machine operators, 178 were followed up for 2 years. At baseline and at 1 and 2

Anette Kaergaard; Johan H Andersen

2000-01-01

66

Mean Machines.  

ERIC Educational Resources Information Center

Suggests scales as alternative representations of numerical concepts and operations that can be used as arithmetic-mean machines, adding machines, multiplication machines, and geometric-mean machines. (ASK)

Flores, Alfinio

1998-01-01

67

A Catalog of Performance Objectives, Performance Conditions, and Performance Guides for Machine Tool Operations.  

ERIC Educational Resources Information Center

This catalog provides performance objectives, tasks, standards, and performance guides associated with current occupational information relating to the job content of machinists, specifically tool grinder operators, production lathe operators, and production screw machine operators. The catalog is comprised of 262 performance objectives, tool and…

Stadt, Ronald; And Others

68

Numerical Ergonomics Analysis in Operation Environment of CNC Machine  

NASA Astrophysics Data System (ADS)

The performance of operator will be affected by different operation environments [1]. Moreover, poor operation environment may cause health problems of the operator [2]. Physical and psychological considerations are two main factors that will affect the performance of operator under different conditions of operation environment. In this paper, applying scientific and systematic methods find out the pivot elements in the field of physical and psychological factors. There are five main factors including light, temperature, noise, air flow and space that are analyzed. A numerical ergonomics model has been built up regarding the analysis results which can support to advance the design of operation environment. Moreover, the output of numerical ergonomic model can provide the safe, comfortable, more productive conditions for the operator.

Wong, S. F.; Yang, Z. X.

2010-05-01

69

A human-machine interface for multireactor operation  

SciTech Connect

This paper describes interim results of an ongoing joint effort between G.E. Nuclear Energy and Hitachi, Ltd., to develop functional, performance, and anthropometric requirements for a unique nuclear reactor operating console that facilitates operation of three reactors and a steam turbine by a single licensed reactor operator. The human factors engineering (HFE) challenges associated with the operator console are discussed, a conceptual [open quotes]visualization[close quotes] of the console and control room is presented, and operator support concepts (e.g., alarm handling) are briefly described. The Advanced Reactor Programs group with G.E. Nuclear Energy is designing a modular, pool-type, sodium-cooled reactor with unique safety characteristics whereby no mitigative operator action is required in order to meet the plant's safety limits (radiation release criteria). A full-sized, 1440-MW(electric) plant includes nine such reactors configured as three physically separate, independently operated power blocks. One power block consists of three reactors, each with their individual steam generators headered to jointly deliver superheated steam to a turbine generator. All power blocks are operated from one control room. Furthermore, due to greatly reduced reliance on manual safety actions by the operator, control systems are automated to the extent that one power block is operated by one licensed reactor operator. The control room houses three operator consoles (one per power block) and a supervisor's workstation. This is the primary equipment used by the normal control room shift staffing of three licensed reactor operators, a shift supervisor, and an assistant shift supervisor. The operator and the automated control systems will, in principle, perform together as a single entity. However, one operator operating more than one nuclear reactor has no precedent.

Zizzo, D.; Dayal, Y.; Carroll, D. (General Electric Company, Schenectady, NY (United States)); Hashimoto, S.; Ishida, T. (Hitachi Ltd., Ibaraki (Japan))

1993-01-01

70

Operations Sequencing in Flexible Production Lines With Bernoulli Machines  

Microsoft Academic Search

In flexible manufacturing environments, the performance of a production system is often affected by the sequence of operations. While performance evaluation, improvement and lean design of production systems have been studied extensively, the joint effect of productivity and quality parameters on operations sequencing remains practically unexplored. Indeed, determining the optimal operation sequence has significant implications from both practical and theoretical

Liang Zhang; Xiaohang Yue

2011-01-01

71

Machine-Vision Aids for Improved Flight Operations  

NASA Technical Reports Server (NTRS)

The development of machine vision based pilot aids to help reduce night approach and landing accidents is explored. The techniques developed are motivated by the desire to use the available information sources for navigation such as the airport lighting layout, attitude sensors and Global Positioning System to derive more precise aircraft position and orientation information. The fact that airport lighting geometry is known and that images of airport lighting can be acquired by the camera, has lead to the synthesis of machine vision based algorithms for runway relative aircraft position and orientation estimation. The main contribution of this research is the synthesis of seven navigation algorithms based on two broad families of solutions. The first family of solution methods consists of techniques that reconstruct the airport lighting layout from the camera image and then estimate the aircraft position components by comparing the reconstructed lighting layout geometry with the known model of the airport lighting layout geometry. The second family of methods comprises techniques that synthesize the image of the airport lighting layout using a camera model and estimate the aircraft position and orientation by comparing this image with the actual image of the airport lighting acquired by the camera. Algorithms 1 through 4 belong to the first family of solutions while Algorithms 5 through 7 belong to the second family of solutions. Algorithms 1 and 2 are parameter optimization methods, Algorithms 3 and 4 are feature correspondence methods and Algorithms 5 through 7 are Kalman filter centered algorithms. Results of computer simulation are presented to demonstrate the performance of all the seven algorithms developed.

Menon, P. K.; Chatterji, Gano B.

1996-01-01

72

Intelligent Machine Learning Analysis for Fuel Cell Operations  

SciTech Connect

A performance computational model for a 100 kW nominal solid oxide fuel cell generator system is described. The calculational methods are based on the FORTRAN programming language. Comprehensive parameter input options are presented, and constraints are identified. Example reactant, electrical, and efficiency outputs are demonstrated over the relevant operating ranges. A sample calculated output display at nominal operating conditions is given.

Murphy, R.W.; Hoyt, W.A.

2000-06-30

73

Agricultural Safety. FMO: Fundamentals of Machine Operation. Second Edition.  

ERIC Educational Resources Information Center

This manual is intended to provide students with basic information on the safe operation of farm machinery. The following topics are covered in the individual chapters: safe farm machinery operation (the importance of safety, the role of communication in safety, and types of farm accidents); human factors (human limitations and capabilities;…

John Deere Co., Moline, IL.

74

Design of a versatile, teleoperable, towable lifting machine with robotic capabilities for use in NASA's lunar base operations  

NASA Technical Reports Server (NTRS)

The lifting machine will assist in lifting cargo off of landers sent to the Moon and in the construction of a lunar base. Three possible designs were considered for the overall configuration of the lifting machine: the variable angle crane, the tower crane, and the gantry crane. Alternate designs were developed for the major components of the lifting machine. A teleoperable, variable angle crane was chosen as its final design. The design consists of a telescoping boom mounted to a chassis that is supported by two conical wheels for towing and four outriggers for stability. Attached to the end of the boom is a seven degree of freedom robot arm for light, dexterous, lifting operations. A cable and hook suspends from the end of the boom for heavy, gross, lifting operations. Approximate structural sizes were determined for the lifter and its components. However, further analysis is needed to determine the optimum design dimensions. The design team also constructed a model of the design which demonstrates its features and operating principals.

Harris, Elizabeth; Ogle, James; Schoppe, Dean

1989-01-01

75

Fatality Assessment and Control Evaluation (FACE) Report for Nebraska: Machine Operator Falls from Order Picker.  

National Technical Information Service (NTIS)

A 30-year-old machine operator, at a furniture store warehouse, was killed when he fell approximately 14 feet from the operating platform of an electrically-powered Crown high-lift rider, commonly referred to as an order picker. When the incident happened...

2000-01-01

76

Universal Tool Grinder Operator Instructor's Guide. Part of Single-Tool Skills Program Machine Industries Occupations.  

ERIC Educational Resources Information Center

The document is an instructor's guide for a course on universal tool grinder operation. The course is designed to train people in making complicated machine setups and precision in the grinding operations and, although intended primarily for adult learners, it can be adapted for high school use. The guide is divided into three parts: (1) the…

New York State Education Dept., Albany. Div. of Curriculum Development.

77

On-Line Production Cost Optimization in High Performance Machining Operations through AI Techniques  

Microsoft Academic Search

This paper proposes an on-line adaptive control with optimization (ACO) system for optimizing the production cost subjected to quality constraints in high performance machining operations of hardened steel. Unlike traditional approaches for optimizing production cost, this paper deals with optimizing the cutting operation considering the real state of the cutting-tool. Artificial intelligence techniques for modeling (Artificial Neural Networks) and optimizing

Jorge A. Silva; Hector R. Siller; G. Kitazawa; Jose V. Abell´n-Nebot

2011-01-01

78

Measurement of vibration rate of manually operated percussion machines  

NASA Technical Reports Server (NTRS)

A special apparatus for measurement of accelerations of between 1 and 5000 g and shock stress pulses from 20 kg/cu cm up, with durations of 50.1 million sec and higher was designed and built. The amplitudes and shapes of the peak vibroshock pulses, arising during operation of a hammer, are obtained; the recording time of the continuous process is determined by the time of one revolution of the drum of a specially made mechanical photo attachment.

Aleksandrov, Y. V.; Flavitskiy, Y. V.

1973-01-01

79

Fatality Assessment and Control Evaluation (FACE) Report for Michigan: Machine Operator Dies After Being Struck by a Shredder Grate During Shredding Machine Maintenance.  

National Technical Information Service (NTIS)

On February 16, 2006, a 42-year-old male machine operator was critically injured after being struck by a 2,500-pound iron grate that he was removing from a metal shredding machine (also known as a hammer mill). There were 13 grates that required removal. ...

2007-01-01

80

The role of simulation in operational planning and control of flexible machining cells  

Microsoft Academic Search

The use of simulation as a solution to the operational planning and control problems of flexible machining cells is now well established. This paper describes the role of simulation models as: a decision support tool, a scheduler and as an aid to develop appropriate control procedures. To illustrate the ideas presented a novel framework for the simultaneous management and control

Shahin Rahimifard; Stephen T. Newman

1995-01-01

81

MACHINE TOOL OPERATOR--GENERAL, ENTRY, SUGGESTED GUIDE FOR A TRAINING COURSE.  

ERIC Educational Resources Information Center

THE PURPOSE OF THIS CURRICULUM GUIDE IS TO ASSIST THE ADMINISTRATOR AND INSTRUCTOR IN PLANNING AND DEVELOPING MANPOWER DEVELOPMENT AND TRAINING PROGRAMS TO PREPARE MACHINE TOOL OPERATORS FOR ENTRY-LEVEL POSITIONS. THE COURSE OUTLINE PROVIDES UNITS IN -- (1) ORIENTATION, (2) BENCH WORK, (3) SHOP MATHEMATICS, (4) BLUEPRINT READING AND SKETCHING, (5)…

RONEY, MAURICE W.; AND OTHERS

82

29 CFR 570.62 - Occupations involved in the operation of bakery machines (Order 11).  

Code of Federal Regulations, 2013 CFR

...Occupations Particularly Hazardous for the Employment of Minors Between 16 and 18 Years of Age or Detrimental to Their Health or Well-Being § 570.62 Occupations involved in the operation of bakery machines (Order 11). (a) Finding and...

2013-07-01

83

The reduction methods of operator's radiation dose for portable dental X-ray machines  

PubMed Central

Objectives This study was aimed to investigate the methods to reduce operator's radiation dose when taking intraoral radiographs with portable dental X-ray machines. Materials and Methods Two kinds of portable dental X-ray machines (DX3000, Dexcowin and Rextar, Posdion) were used. Operator's radiation dose was measured with an 1,800 cc ionization chamber (RadCal Corp.) at the hand level of X-ray tubehead and at the operator's chest and waist levels with and without the backscatter shield. The operator's radiation dose at the hand level was measured with and without lead gloves and with long and short cones. Results The backscatter shield reduced operator's radiation dose at the hand level of X-ray tubehead to 23 - 32%, the lead gloves to 26 - 31%, and long cone to 48 - 52%. And the backscatter shield reduced operator's radiation dose at the operator's chest and waist levels to 0.1 - 37%. Conclusions When portable dental X-ray systems are used, it is recommended to select X-ray machine attached with a backscatter shield and a long cone and to wear the lead gloves.

Cho, Jeong-Yeon

2012-01-01

84

Control of seismic and operational vibrations of rotating machines using semi-active mounts  

NASA Astrophysics Data System (ADS)

A dual isolation problem for rotating machines consists of isolation of housing structures from the machine vibrations and protection of machines during an earthquake to maintain their functionality. Desirable characteristics of machine mounts for the above two purposes can differ significantly due to difference in nature of the excitation and performance criteria in the two situations. In this paper, relevant response quantities are identified that may be used to quantify performance and simplified models of rotating machines are presented using which these relevant response quantities may be calculated. Using random vibration approach with a stationary excitation, it is shown that significant improvement in seismic performance is achievable by proper mount design. Results of shaking table experiments performed with a realistic setup using a centrifugal pump are presented. It is concluded that a solution to this dual isolation problem lies in a semi-active mount capable switching its properties from ‘operation-optimum’ to ‘seismic-optimum’ at the onset of a seismic event.

Rana, R.; Soong, T. T.

2004-06-01

85

Limitations Of The Current State Space Modelling Approach In Multistage Machining Processes Due To Operation Variations  

NASA Astrophysics Data System (ADS)

The State Space modelling approach has been recently proposed as an engineering-driven technique for part quality prediction in Multistage Machining Processes (MMP). Current State Space models incorporate fixture and datum variations in the multi-stage variation propagation, without explicitly considering common operation variations such as machine-tool thermal distortions, cutting-tool wear, cutting-tool deflections, etc. This paper shows the limitations of the current State Space model through an experimental case study where the effect of the spindle thermal expansion, cutting-tool flank wear and locator errors are introduced. The paper also discusses the extension of the current State Space model to include operation variations and its potential benefits.

Abellán-Nebot, J. V.; Liu, J.; Romero, F.

2009-11-01

86

On-machine sensors to measure paper mechanical properties. Final report  

SciTech Connect

The measurement of the velocity of ultrasound provides a nondestructive means to characterize the elastic stiffness properties of paper. The objective of this project is to develop sensors capable of measuring the velocity of ultrasound in the thickness and in-plane directions of moving paper webs. On-machine measurements would allow continuous monitoring of product quality as well as provide data for controlling the papermaking process. This final report first reviews the background and various technical approaches explored. Then the preferred configurations and examples of measurements on moving paper webs in the laboratory are presented and discussed. The report concludes with a summary of project results and recommendations for further developments. Transducers mounted in fluid-filled wheels are used to make thickness direction, ZD, ultrasound velocity measurements on paper webs moving in the nip between two such wheels. Comparisons of the arrival times of echo and transmitted pulses with and without the paper web in the nip provide a measure of the transit time and caliper. Bimorph transducers mounted in an aluminum cylinder are used for machine direction (MD) and cross direction (CD) in-plane measurements. These ZD and in-plane sensors are mounted on a web handler in the IPST laboratory.

Hall, M.S.; Brodeur, P.H.; Jackson, T.G.

1993-10-01

87

Machine learning algorithms to damage detection under operational and environmental variability  

NASA Astrophysics Data System (ADS)

The goal of this paper is to detect structural damage in the presence of operational and environmental variations using vibration-based damage identification procedures. For this purpose, four machine learning algorithms are applied based on auto-associative neural networks, factor analysis, Mahalanobis distance, and singular value decomposition. A baseexcited three-story frame structure was tested in laboratory environment to obtain time series data from an array of sensors under several structural state conditions. Tests were performed with varying stiffness and mass conditions with the assumption that these sources of variability are representative of changing operational and environmental conditions. Damage was simulated through nonlinear effects introduced by a bumper mechanism that induces a repetitive, impacttype nonlinearity. This mechanism intends to simulate the cracks that open and close under dynamic loads or loose connections that rattle. The unique contribution of this study is a direct comparison of the four proposed machine learning algorithms that have been reported as reliable approaches to separate structural conditions with changes resulting from damage from changes caused by operational and environmental variations.

Figueiredo, Eloi; Park, Gyuhae; Farrar, Charles R.; Worden, Keith; Figueiras, Joaquim

2010-03-01

88

Comparative evaluation of machines for electric and hybrid vehicles based on dynamic operation and loss minimization  

Microsoft Academic Search

This paper proposes a method to evaluate induction machines for electric vehicles (EVs) and hybrid electric vehicles (HEVs). Some performance aspects of induction machines are also compared to permanent magnet synchronous machines (PMSMs). An overview of static efficiency maps is presented, but efficiency maps miss dynamic effects and under-predict induction machine efficiencies. The proposed evaluation method is based on dynamic

Ali M. Bazzi; Philip T. Krein

2010-01-01

89

Improved generator for use with low-speed rotating machines. Final report  

SciTech Connect

The goal of this project was to construct a low-technology, maintenance-free dc electrical generator suited for use with low-speed rotating machines such as windmills or waterwheels. The generator consists of permanent magnets affixed to the circumference of the rotating device, and stationary coils mounted on a semicircular frame. As the device rotates, the magnets move past the coils and magnetically induce an ac voltage in the coils. This voltage is rectified and stored in a battery. No gears, belts, or brushes are used, so the generator operates quietly and without maintenance. The purpose of mounting the magnets at the circumference of the rotating device is to achieve high relative velocities between magnets and coils even at slow rotations, in the hope of extracting energy from very light winds or slowly flowing water. Such a generator was constructed as part of a ten-foot-diameter windmill to test the concept. The generator easily reaches charging voltages at low speeds, and operates quietly without mechanical wear. But the charging current is very low in comparison to a wind turbine of conventional design. The experiment allows fundamental design problems to be identified.

Goerz, J.W.

1983-03-31

90

Sensor guided control and navigation with intelligent machines. Final technical report  

SciTech Connect

This item constitutes the final report on ''Visionics: An integrated approach to analysis and design of intelligent machines.'' The report discusses dynamical systems approach to problems in robust control of possibly time-varying linear systems, problems in vision and visually guided control, and, finally, applications of these control techniques to intelligent navigation with a mobile platform. Robust design of a controller for a time-varying system essentially deals with the problem of synthesizing a controller that can adapt to sudden changes in the parameters of the plant and can maintain stability. The approach presented is to design a compensator that simultaneously stabilizes each and every possible mode of the plant as the parameters undergo sudden and unexpected changes. Such changes can in fact be detected by a visual sensor and, hence, visually guided control problems are studied as a natural consequence. The problem here is to detect parameters of the plant and maintain st ability in the closed loop using a ccd camera as a sensor. The main result discussed in the report is the role of perspective systems theory that was developed in order to analyze such a detection and control problem. The robust control algorithms and the visually guided control algorithms are applied in the context of a PUMA 560 robot arm control where the goal is to visually locate a moving part on a mobile turntable. Such problems are of paramount importance in manufacturing with a certain lack of structure. Sensor guided control problems are extended to problems in robot navigation using a NOMADIC mobile platform with a ccd and a laser range finder as sensors. The localization and map building problems are studied with the objective of navigation in an unstructured terrain.

Ghosh, Bijoy K.

2001-03-26

91

Operation Teapot, Nevada Test Site, February-May 1955. Project 34. 4. Nuclear effects on machine tools  

Microsoft Academic Search

To determine the durability of heavy-duty machine tools, 11 such tools of various types and sizes were exposed to the open shot of Operation Teapot. Two engine lathes and two knee type milling machines were installed on a concrete base simulating industrial installations at 2750 ft from Ground Zero. One 200-ton hydraulic press was installed immediately behind a two-story brick

L. N. Sparks; Risley; H. M. Meidal

1956-01-01

92

Machine tool accuracy characterization workshops. Final report, May 5, 1992--November 5 1993  

SciTech Connect

The ability to assess the accuracy of machine tools is required by both tool builders and users. Builders must have this ability in order to predict the accuracy capability of a machine tool for different part geometry`s, to provide verifiable accuracy information for sales purposes, and to locate error sources for maintenance, troubleshooting, and design enhancement. Users require the same ability in order to make intelligent choices in selecting or procuring machine tools, to predict component manufacturing accuracy, and to perform maintenance and troubleshooting. In both instances, the ability to fully evaluate the accuracy capabilities of a machine tool and the source of its limitations is essential for using the tool to its maximum accuracy and productivity potential. This project was designed to transfer expertise in modern machine tool accuracy testing methods from LLNL to US industry, and to educate users on the use and application of emerging standards for machine tool performance testing.

NONE

1995-01-06

93

A new control technique for achieving wide constant power speed operation with an interior PM alternator machine  

Microsoft Academic Search

A new flux weakening control algorithm is presented for achieving wide constant power operation with an interior permanent magnet (IPM) synchronous machine operating as an alternator. The algorithm is designed to initiate flux weakening only when necessary by recognizing the threshold conditions for current regulator saturation, making the algorithm inherently adaptive to changes in the inverter bus voltage. A 6

Jackson Wai; Thomas M. Jahns

2001-01-01

94

Light to investigate (read) and operate (write) molecular devices and machines.  

PubMed

The development of multicomponent (supramolecular) systems that can perform predetermined functions under external control - i.e., molecular devices - is a challenging task in chemistry and a fascinating objective in the frame of a bottom-up approach to nanostructures. In this context light signals can be conveniently used both for supplying energy to the system and for probing its states and transformations. The aim of this tutorial review is to recall a few basic aspects of light-induced processes that can be used to "write" and "read" onto molecular and supramolecular systems. These principles are illustrated through some examples of artificial molecular devices and machines taken from our work, which provide a flavour of current research. They are molecular and supramolecular systems that operate and/or perform valuable functions by exploiting photoinduced energy- or electron-transfer processes, photoisomerization reactions, or photoinduced proton transfer. The choice of these examples was based on both their intrinsic importance for the referred topic and their educational value. In the last section of the review potential applications, limitations and future directions of the research in the field of artificial molecular devices and machines are also discussed. PMID:24590055

Ceroni, Paola; Credi, Alberto; Venturi, Margherita

2014-05-27

95

Machining and inspection of structural ceramic components. CRADA final report for CRADA number Y-1292-0078  

SciTech Connect

This document is the final report of the Cooperative Research and Development Agreement (CRADA) between Lockheed Martin Energy Systems, Inc. (Energy Systems) and the Coors Ceramics Company (Coors). The purpose of this CRADA was to develop advanced technology and manufacturing practices for machining and inspecting ceramic components. Specific CRADA objectives were accomplished through the completion of six projects at four separate Coors facilities. The projects included the development of an analytical model to simulate the mechanics of a powder rolling process, development and testing of a microwave-based system for measuring the density of conveyed ceramic material, and the development and testing of four machine vision inspection systems. This CRADA benefited the U.S. Department of Energy (DOE) activities associated with advanced heat engines, enhanced critical manufacturing skills within the DOE complex for fabricating precision, high quality workpieces from difficult-to-machine materials, and enabled U.S. industry to maintain a position of leadership in the structural ceramics field.

Counts, R.W.; Albright, S.; Ritland, M. [and others

1996-09-30

96

Motor proteins and molecular motors: how to operate machines at the nanoscale.  

PubMed

Several classes of biological molecules that transform chemical energy into mechanical work are known as motor proteins or molecular motors. These nanometer-sized machines operate in noisy stochastic isothermal environments, strongly supporting fundamental cellular processes such as the transfer of genetic information, transport, organization and functioning. In the past two decades motor proteins have become a subject of intense research efforts, aimed at uncovering the fundamental principles and mechanisms of molecular motor dynamics. In this review, we critically discuss recent progress in experimental and theoretical studies on motor proteins. Our focus is on analyzing fundamental concepts and ideas that have been utilized to explain the non-equilibrium nature and mechanisms of molecular motors. PMID:24100357

Kolomeisky, Anatoly B

2013-11-20

97

Widely tunable singlemode surface micro-machined MEMS-VCSELs operating at 1.95-?m  

NASA Astrophysics Data System (ADS)

We present surface micro-machined micro-electro mechanical-system (MEMS) tunable vertical-cavity surfaceemitting lasers (VCSEL) with rectangular and triangular shaped quantum wells (QWs) emitting around 1:95 ?m predestined for broadband tunable diode laser absorption spectroscopy. The VCSELs show single-mode operation and high side-mode suppression-ratio SMSR < 50 dB within the whole tuning range of 50nm and 35 nm, the fibre-coupled optical power of 1:0mW and 1:76mW and the threshold current of 2:5mA and 2:0mA for the rectangular and triangular shaped QWs respectively. The 3 dB modulation frequency of the MEMS is 110 Hz.

Zogal, Karolina; Gruendl, Tobias; Gierl, Christian; Paul, Sujoy; Grasse, Christian; Meissner, Peter; Amann, Marcus-Christian; Kueppers, Franko

2013-03-01

98

Characteristics and treatability of oil-bearing wastes from aluminum alloy machining operations.  

PubMed

Enomoto Industry Co., exclusively uses water-based cutting fluids in its aluminum alloy machining operations. Since the cost of disposal can be much greater than the cost of purchase, the treatability of spent cutting fluids is becoming a major criterion for cutting fluid selection. Samples were collected from the machining lines at Enomoto's facility to determine their characteristics and evaluate their treatability with centrifugation, chemical coagulation and electrochemical coagulation. As expected, oil and grease (O&G) and total suspended solids (TSS) are the main reasons that spent cutting fluids are prohibited from being discharged into local swage systems. The average O&G found in the spent cutting fluids is 87,354 mg/L with TSS of more than 70,000 mg/L. Both O&G and TSS are the major contributors to the high turbidity of these waste effluents. A centrifuge with a relative centrifugal force of 1318 x g, was able to reduce 60% of the turbidity. By adding the coagulant aluminum chloride, the oil-water emulsion was destabilized, and the turbidity was reduced from 3249 Formazin Attenuation Units (FAU) to around 314 FAU. With freshly generated aluminum ions in the spent cutting fluid, the electrochemical process destabilized the oil-water emulsion system. The coalesced oil droplets were adsorbed onto the highly dispersed aluminum coagulant. The oil-rich sludge that was generated in the operation was then floated to the surface, forming a blanket that was removed by skimming. The electrochemical treatment was able to reduce the turbidity to less than 14 FAU, which is the detection limit of the Hach DR/4000 UV-vis spectrophotometer. PMID:17850956

Chen, Luke; Hsieh, Chueh-Chen; Wetherbee, John; Yang, Chen-Lu

2008-04-15

99

Study of Man-Machine Communications Systems for the Handicapped. Volume III. Final Report.  

ERIC Educational Resources Information Center

The report describes a series of studies conducted to determine the extent to which severly handicapped students who were able to comprehend language and language structure but who were not able to write or type could communicate using various man-machine systems. Included among the systems tested were specialized electric typewriting machines, a…

Kafafian, Haig

100

Study of Man-Machine Communications Systems for Disabled Persons (The Handicapped). Volume V. Final Report.  

ERIC Educational Resources Information Center

Instructions are given for teaching severely physically and/or neurologically handicapped students to use the 14-key Cybertype man-machine communications system, an electric writing machine with a simplified keyboard to enable persons with limited motor ability or coordination to communicate in written form. Explained are the various possible…

Kafafian, Haig

101

Capstans or lead screws? Comparing the performance of diamond turning machines under operating conditions  

Microsoft Academic Search

The cutting performance of diamond turning machines which employ lead screw driven slides is compared to that of similar machines which use capstan drives. Diamond turned parts are compared using Talystep, Form Talysurf, and Zygo Mark 2 interferometer data. Machine contouring performance is compared using a sinusoidal path technique.

D. H. Youden

1993-01-01

102

Site Operator technical report. Final report (1992--1996)  

SciTech Connect

The Southern California Edison Company (SCE) and the US Department of Energy (DOE) entered into cooperative agreement No. DE-FC07-91ID13077 on August 23, 1991, which expired on August 3, 1996. This cooperative agreement provided SCE with DOE cofunding for participation in the DOE`s Electric and Hybrid Vehicle Site Operator Program. In return, SCE provided the DOE with quarterly progress reports which include operating and maintenance data for the electric (EVs) vehicles in SCE`s fleet. Herein is SCE`s final report for the 1992 to 1996 agreement period. As of September 1, 1996 the SCE fleet had 65 electric vehicles in service. A total of 578,200 miles had been logged. During the agreement period, SCE sent the DOE a total of 19 technical reports (Appendix B). This report summarizes the technical achievements which took place during a long, productive and rewarding, relationship with the DOE.

NONE

1996-12-01

103

A Boltzmann machine for the organization of intelligent machines  

NASA Technical Reports Server (NTRS)

In the present technological society, there is a major need to build machines that would execute intelligent tasks operating in uncertain environments with minimum interaction with a human operator. Although some designers have built smart robots, utilizing heuristic ideas, there is no systematic approach to design such machines in an engineering manner. Recently, cross-disciplinary research from the fields of computers, systems AI and information theory has served to set the foundations of the emerging area of the design of intelligent machines. Since 1977 Saridis has been developing an approach, defined as Hierarchical Intelligent Control, designed to organize, coordinate and execute anthropomorphic tasks by a machine with minimum interaction with a human operator. This approach utilizes analytical (probabilistic) models to describe and control the various functions of the intelligent machine structured by the intuitively defined principle of Increasing Precision with Decreasing Intelligence (IPDI) (Saridis 1979). This principle, even though resembles the managerial structure of organizational systems (Levis 1988), has been derived on an analytic basis by Saridis (1988). The purpose is to derive analytically a Boltzmann machine suitable for optimal connection of nodes in a neural net (Fahlman, Hinton, Sejnowski, 1985). Then this machine will serve to search for the optimal design of the organization level of an intelligent machine. In order to accomplish this, some mathematical theory of the intelligent machines will be first outlined. Then some definitions of the variables associated with the principle, like machine intelligence, machine knowledge, and precision will be made (Saridis, Valavanis 1988). Then a procedure to establish the Boltzmann machine on an analytic basis will be presented and illustrated by an example in designing the organization level of an Intelligent Machine. A new search technique, the Modified Genetic Algorithm, is presented and proved to converge to the minimum of a cost function. Finally, simulations will show the effectiveness of a variety of search techniques for the intelligent machine.

Moed, Michael C.; Saridis, George N.

1989-01-01

104

Factors Influencing the Microbial Composition of Metalworking Fluids and Potential Implications for Machine Operator's Lung  

PubMed Central

Hypersensitivity pneumonitis, also known as “machine operator's lung” (MOL), has been related to microorganisms growing in metalworking fluids (MWFs), especially Mycobacterium immunogenum. We aimed to (i) describe the microbiological contamination of MWFs and (ii) look for chemical, physical, and environmental parameters associated with variations in microbiological profiles. We microbiologically analyzed 180 MWF samples from nonautomotive plants (e.g., screw-machining or metal-cutting plants) in the Franche-Comté region in eastern France and 165 samples from three French automotive plants in which cases of MOL had been proven. Our results revealed two types of microbial biomes: the first was from the nonautomotive industry, showed predominantly Gram-negative rods (GNR), and was associated with a low risk of MOL, and the second came from the automotive industry that was affected by cases of MOL and showed predominantly Gram-positive rods (GPR). Traces of M. immunogenum were sporadically detected in the first type, while it was highly prevalent in the automotive sector, with up to 38% of samples testing positive. The use of chromium, nickel, or iron was associated with growth of Gram-negative rods; conversely, growth of Gram-positive rods was associated with the absence of these metals. Synthetic MWFs were more frequently sterile than emulsions. Vegetable oil-based emulsions were associated with GNR, while mineral ones were associated with GPR. Our results suggest that metal types and the nature of MWF play a part in MWF contamination, and this work shall be followed by further in vitro simulation experiments on the kinetics of microbial populations, focusing on the phenomena of inhibition and synergy.

Murat, Jean-Benjamin; Grenouillet, Frederic; Penven, Emmanuelle; Batchili, Adam; Dalphin, Jean-Charles; Thaon, Isabelle; Millon, Laurence

2012-01-01

105

Description of a Method and Artifact for Estimating Volumetric Uncertainty of Coordinate Measuring Machines. Final Report.  

National Technical Information Service (NTIS)

Methodology that expresses the volumetric uncertainty of coordinate measuring machines (CMMs) in a single index is developed. A Latin Square Three-Dimensional Ball Plate (LS3DBP) is the artifact used to obtain statistically balanced data that are analyzed...

L. L. Jones J. V. Grice

1983-01-01

106

Computer-controlled test system for operating different wear-test machines  

SciTech Connect

This report discusses a wear-tester control system, where the same computer and software runs three different wear-test machines; a commercial crossed-cylinder, a commercial block-on-ring, and an in-house designed controlled-atmosphere tribometer. The computer hardware, the interface to the wear test machines, and the aspects that make the machines functionally similar are examined. The program itself, its use, and the data file structure are also explored.

Whitenton, E.P.; Ruff, A.W.

1989-07-01

107

Stochastic optimal control as a theory of brain-machine interface operation.  

PubMed

The closed-loop operation of brain-machine interfaces (BMI) provides a framework to study the mechanisms behind neural control through a restricted output channel, with emerging clinical applications to stroke, degenerative disease, and trauma. Despite significant empirically driven improvements in closed-loop BMI systems, a fundamental, experimentally validated theory of closed-loop BMI operation is lacking. Here we propose a compact model based on stochastic optimal control to describe the brain in skillfully operating canonical decoding algorithms. The model produces goal-directed BMI movements with sensory feedback and intrinsically noisy neural output signals. Various experimentally validated phenomena emerge naturally from this model, including performance deterioration with bin width, compensation of biased decoders, and shifts in tuning curves between arm control and BMI control. Analysis of the model provides insight into possible mechanisms underlying these behaviors, with testable predictions. Spike binning may erode performance in part from intrinsic control-dependent constraints, regardless of decoding accuracy. In compensating decoder bias, the brain may incur an energetic cost associated with action potential production. Tuning curve shifts, seen after the mastery of a BMI-based skill, may reflect the brain's implementation of a new closed-loop control policy. The direction and magnitude of tuning curve shifts may be altered by decoder structure, ensemble size, and the costs of closed-loop control. Looking forward, the model provides a framework for the design and simulated testing of an emerging class of BMI algorithms that seek to directly exploit the presence of a human in the loop. PMID:23148413

Lagang, Manuel; Srinivasan, Lakshminarayan

2013-02-01

108

29 CFR 570.55 - Occupations involved in the operation of power-driven woodworking machines (Order 5).  

Code of Federal Regulations, 2013 CFR

...Occupations Particularly Hazardous for the Employment of Minors Between 16 and 18 Years of Age or Detrimental to Their Health or Well-Being § 570.55 Occupations involved in the operation of power-driven woodworking machines (Order 5)....

2013-07-01

109

A computationally efficient iron loss model for brushless AC machines that caters for rated flux and field weakened operation  

Microsoft Academic Search

This paper presents a simple and computationally efficient approach for predicting iron loss within a field orientated controlled brushless AC permanent magnet machine which can cater for both rated flux and field weakened operation. The proposed method is readily incorporated as part of the design process and is based on two discrete time step 2D magnetostatic finite element field solutions

P. H. Mellor; R. Wrobel; D. Holliday

2009-01-01

110

Bench Work and Support Operations, Machine Shop Work--Intermediate: 9555.02.  

ERIC Educational Resources Information Center

The course outline has been prepared as a guide to assist the instructor to plan systematically and to present meaningful lessons programmed to meet the necessary training needed by the machine shop student who has completed an introductory course in machine tool technology. The five blocks of instruction contained in this outline are designed to…

Dade County Public Schools, Miami, FL.

111

Ceramic machining: Assessment of current practice and research needs in the United States. Special pub. (Final)  

SciTech Connect

Advanced structural ceramics, such as silicon nitride, are attractive for many advanced applications due to their high strength at elevated temperatures, resistance to chemical degradation, wear resistance, and low density. Despite these advantages, there are considerable impediments to the introduction of advanced ceramics. With current technology, fabrication costs are high, compared to other materials, and component reliability is uncertain. A study was conducted to assess the current state-of-the-art in the machining of advanced ceramics and to identify research areas which could lead to significant improvements. In conducting the assessment, an extensive literature search was carried out, visits and discussions were held with industrial companies interested in ceramic machining, a telephone survey was conducted on ceramic machining shops, a research-in-progress database was consulted, individuals were invited to visit NIST and discuss different aspects of ceramic machining. The ultimate goal of the program is to further the utilization of advanced structural ceramics in industrial applications by increasing the cost-effectiveness of ceramic components. It is recommended that these projects be carried out jointly by government laboratories and industry to facilitate technology transfer, and that all research activities funded by the government be coordinated to minimize the possibility of duplication of effort.

Jahanmir, S.; Ives, L.K.; Ruff, A.W.; Peterson, M.B.

1992-06-01

112

The Couzens Machine. A Computerized Learning Exchange. Final Report, 1973-74.  

ERIC Educational Resources Information Center

The Couzens Machine is a computerized learning exchange and information service developed for the residents of Couzens Hall, a dormitory at the University of Michigan. Organized as a collective within the framework of a course and supported by an instructional development grant from the Center for Research on Learning and Teaching, the Couzens…

Davis, Ken, Comp.; Libengood, Richard, Comp.

113

TEACHING BEGINNING READING TO HEARING IMPAIRED CHILDREN, USING A VISUAL METHOD AND TEACHING MACHINES. FINAL REPORT.  

ERIC Educational Resources Information Center

AN AUTOMATED INSTRUCTIONAL SYSTEM WAS DEVELOPED TO TEACH BEGINNING READING TO HEARING IMPAIRED CHILDREN USING A NON-ORAL METHOD. INSTRUCTION WAS DONE WITH VISUAL PRESENTATION USING 35MM SLIDES ON A REAR PROJECTION SCREEN. THIS TEACHING MACHINE, THE HONEYWELL UNIVERSITY OF MINNESOTA INSTRUCTIONAL DEVICE (HUMID) WAS CONSTRUCTED WITH AN AUTOMATIC…

KARLSEN, BJORN

114

Development of out-of-core fast Fourier transform software for the connection machine. Final report  

SciTech Connect

This report describes the algorithm and implementation of an out-of-core Fast Fourier Transform routine for the Thinking Machines Corp. CM-5 parallel computer. The software has the capability of transforming multi-dimensional arrays that are both real and complex.

Sweet, R.; Wilson, J. [Univ. of Colorado, Denver, CO (United States). Center for Computational Mathematics

1995-10-01

115

High-speed tapping for N/C machining centers. Final report.  

National Technical Information Service (NTIS)

Through a series of experiments, a new high-speed tapping technique was developed for N/C machining centers. The new technique produces high quality threads in a fraction of the time previously required, using the same equipment. Threads are produced to p...

J. P. Friend

1991-01-01

116

Study of Man-Machine Communications Systems for Disabled Persons (The Handicapped). Volume VI. Final Report.  

ERIC Educational Resources Information Center

The instruction manual contains lessons for teaching severely physically and/or neurologically handicapped students to use the seven-key Cybertype electric writing machine. Unlike the 14-key keyboard, which requires bilateral coordination in arms, legs, or other parts of the body, the seven-key keyboard requires the use of only one part of the…

Kafafian, Haig

117

Study of Man-Machine Communications Systems for Disabled Persons (The Handicapped). Volume VII. Final Report.  

ERIC Educational Resources Information Center

Teaching instructions, lesson plans, and exercises are provided for severely physically and/or neurologically handicapped persons learning to use the Cybertype electric writing machine with a tongue-body keyboard. The keyboard, which has eight double-throw toggle switches and a three-position state-selector switch, is designed to be used by…

Kafafian, Haig

118

The Body of Knowledge & Content Framework. Identifying the Important Knowledge Required for Productive Performance of a Plastics Machine Operator. Blow Molding, Extrusion, Injection Molding, Thermoforming.  

ERIC Educational Resources Information Center

Designed to guide training and curriculum development to prepare machine operators for the national certification exam, this publication identifies the important knowledge required for productive performance by a plastics machine operator. Introductory material discusses the rationale for a national standard, uses of the Body of Knowledge,…

Society of the Plastics Industry, Inc., Washington, DC.

119

Electrical-Discharge Machining of Multifacet Electrodes with a Single Clamp Operation.  

National Technical Information Service (NTIS)

EDM die sinking often requires the use of multifacet electrodes. Previously the electrodes were produced on ordinary milling machines, but high-precision-applications require greater precision than this technique can yield. To fill this gap, Mitsubishi El...

Y. Mishima S. Furukawa Y. Nakayama

1987-01-01

120

Stochastically driven single-level quantum dot: A nanoscale finite-time thermodynamic machine and its various operational modes  

NASA Astrophysics Data System (ADS)

We describe a single-level quantum dot in contact with two leads as a nanoscale finite-time thermodynamic machine. The dot is driven by an external stochastic force that switches its energy between two values. In the isothermal regime, it can operate as a rechargeable battery by generating an electric current against the applied bias in response to the stochastic driving and then redelivering work in the reverse cycle. This behavior is reminiscent of the Parrondo paradox. If there is a thermal gradient the device can function as a work-generating thermal engine or as a refrigerator that extracts heat from the cold reservoir via the work input of the stochastic driving. The efficiency of the machine at maximum power output is investigated for each mode of operation, and universal features are identified.

Esposito, Massimiliano; Kumar, Niraj; Lindenberg, Katja; van den Broeck, Christian

2012-03-01

121

An experimental study on the vibration-free, high-speed operation of a three-dimensional coordinate measuring machine  

Microsoft Academic Search

To meet the accuracy requirements, coordinate measuring machines (CMMs) are generally operated with low acceleration-deceleration profiles to minimize residual vibration. This results in low efficiency and may cause a bottleneck in the production line. In the authors' previous study, two control configurations utilizing the input-shaping technique and feedforward controller were proposed to reduce residual vibrations in single-axis and multiple-axis types

Masahiko Mori

2004-01-01

122

Methods, systems and apparatus for controlling operation of two alternating current (AC) machines  

SciTech Connect

A system is provided for controlling two AC machines. The system comprises a DC input voltage source that provides a DC input voltage, a voltage boost command control module (VBCCM), a five-phase PWM inverter module coupled to the two AC machines, and a boost converter coupled to the inverter module and the DC input voltage source. The boost converter is designed to supply a new DC input voltage to the inverter module having a value that is greater than or equal to a value of the DC input voltage. The VBCCM generates a boost command signal (BCS) based on modulation indexes from the two AC machines. The BCS controls the boost converter such that the boost converter generates the new DC input voltage in response to the BCS. When the two AC machines require additional voltage that exceeds the DC input voltage required to meet a combined target mechanical power required by the two AC machines, the BCS controls the boost converter to drive the new DC input voltage generated by the boost converter to a value greater than the DC input voltage.

Gallegos-Lopez, Gabriel (Torrance, CA); Nagashima, James M. (Cerritos, CA); Perisic, Milun (Torrance, CA); Hiti, Silva (Redondo Beach, CA)

2012-02-14

123

Machine Detection of Operationally Significant Cognitive Events for C4ISR.  

National Technical Information Service (NTIS)

A machine capable of detecting cognitively significant events in its user could prevent potential disaster by signaling to commanders that a soldier is under high stress. This project seeks to establish that these cognitive events can be captured in an au...

C. P. Lankford

2003-01-01

124

AlSiTiN nanocomposite coatings developed via Arc Cathodic PVD: Evaluation of wear resistance via tribological analysis and high speed machining operations  

Microsoft Academic Search

The aim of this work is the development and characterisation of innovative ceramic coatings for cutting tools with high wear resistance properties at high temperatures. This objective arises from the industrial need of reducing machining time and consumption of lubricants, in order to reduce machining costs, environmental impact and health risks for the operators.The use of coatings for cutting tools

M. G. Faga; G. Gautier; R. Calzavarini; M. Perucca; E. Aimo Boot; F. Cartasegna; L. Settineri

2007-01-01

125

Operational readiness review phase-1 final report for WRAP-1  

SciTech Connect

This report documents the Operational Readiness Review for WRAP-1 Phase-1 operations. The report includes all criteria, lines of inquiry with resulting Findings and Observations. The review included assessing operational capability of the organization and the computer controlled process and facility systems.

Bowen, W., Westinghouse Hanford

1996-12-27

126

Inter-cycle variation in whole-body vibration exposures of operators driving track-type loader machines  

NASA Astrophysics Data System (ADS)

Whole-body vibration (WBV) measurements are an important aspect of performing risk assessments for those exposed to vibration. A large array of variables affect the outcome of a vibration measurement and its extrapolation to a daily dose measure: e.g. variability in driving style, road surface roughness, loading. The variability in vibration emission is an inherent property for most vibrating environments and there is a risk that a vibration measurement might not be representative of the long-term exposures. It is important to acknowledge the variation inherent to WBV exposure to help understand how this variation will affect health risk assessments. A field investigation was conducted in order to characterise the variation of WBV magnitudes between work cycles of track-type loaders. Six different track-type loaders were measured at four different work sites. The vibrations were measured at the operators seat in three translational axes ( x-, y-, and z-axis) in accordance with ISO 2631-1 (1997). The findings indicate the worst axis of vibration for the track-type loaders was predominantly the fore-and-aft ( x-axis), for most operations. The most severe emission values were measured for machine C at site 2 (1.12 ms -2 rms) and machine D at site 2 (1.03 ms -2 rms). These machines would exceed the action value of the Physical Agents (Vibration) Directive within 2 h of exposure. All of the machines measured would exceed the exposure action value of the Directive within an 8 h working period. The lateral ( y-axis) produced the greatest amount of variability between work cycles (coefficient of variation up to 20%). It is concluded that the inherent variability between work cycles and tasks reinforces the requirement to perform a full task analysis prior to measuring WBV exposures to ensure that all tasks are measured and that adequate cycles are measured to obtain a reliable indication of the vibration emission.

Newell, Geraldine S.; Mansfield, Neil J.; Notini, Luca

2006-12-01

127

Analytical model of PMSM designed for high-frequency operation machine and inverter sizing compromise  

Microsoft Academic Search

In this paper the authors present an analytical model of Surface-Mounted Permanent-Magnet (PM) Synchronous Machine (SMPMSM), in order to predict the evolution of the motor behavior with frequency in the range of 0-80kHz, what we called here 'high frequency'. We assume that the copper proximity effects can be neglected by using Litz winding, so that we only consider the evolution

M. L. Sough; D. Depernet; F. Dubas; B. Boualem; C. Espanet

2011-01-01

128

Initial assessment of coal-fired ship operations. Final report  

Microsoft Academic Search

This report summarizes recent operational experience of a new generation of ocean-going coal-fired ships. The experience summarized in this report is based upon direct discussions with shipowners, operators and shipyard as well as data published in the literature. The owners and operators of seven of these new ships give a positive endorsement to the feasibility of coal-fired steam propulsion. They

Baham

1984-01-01

129

Initial assessment of coal-fired ship operations. Final report  

Microsoft Academic Search

This report summarizes recent operational experience of a new generation of ocean-going coal-fired ships. The experience summarized in this report is based upon direct discussions with shipowners, operators, and shipyard as well as data published in the literature. The owners and operators of seven of these new ships give a positive endorsement to the feasibility of coal-fired steam propulsion. They

Baham

1984-01-01

130

Towards Intelligent Environments: An Augmented Reality-Brain-Machine Interface Operated with a See-Through Head-Mount Display  

PubMed Central

The brain–machine interface (BMI) or brain–computer interface is a new interface technology that uses neurophysiological signals from the brain to control external machines or computers. This technology is expected to support daily activities, especially for persons with disabilities. To expand the range of activities enabled by this type of interface, here, we added augmented reality (AR) to a P300-based BMI. In this new system, we used a see-through head-mount display (HMD) to create control panels with flicker visual stimuli to support the user in areas close to controllable devices. When the attached camera detects an AR marker, the position and orientation of the marker are calculated, and the control panel for the pre-assigned appliance is created by the AR system and superimposed on the HMD. The participants were required to control system-compatible devices, and they successfully operated them without significant training. Online performance with the HMD was not different from that using an LCD monitor. Posterior and lateral (right or left) channel selections contributed to operation of the AR–BMI with both the HMD and LCD monitor. Our results indicate that AR–BMI systems operated with a see-through HMD may be useful in building advanced intelligent environments.

Takano, Kouji; Hata, Naoki; Kansaku, Kenji

2011-01-01

131

Aircraft energy conservation during airport ground operations. Final report  

SciTech Connect

This study identifies and assesses potential fuel conservation options which are available for use during ground operations at Dulles International (IAD) and Washington National (DCA) airports. The study also identifies and analyzes ground operations fuel savings options which have been considered and/or implemented by the various airlines operating at IAD and/or DCA since 1971. In addition, an evaluation of computer models which could be used for analyzing these fuel conservation options at other airports is included. The impact of socio/economic factors such as safety, environment, limitation on expansion and restrictions on accommodating forecast activity at DCA and IAD were considered during the analysis of each option.

Bauchspies, J.S.; Costello, F.A.; Felder, J.; Hilliard, H.; Thompson, J.K.

1982-03-01

132

Innovative grinding wheel design for cost-effective machining of advanced ceramics. Phase I, final report  

SciTech Connect

Norton Company successfully completed the 16-month Phase I technical effort to define requirements, design, develop, and evaluate a next-generation grinding wheel for cost-effective cylindrical grinding of advanced ceramics. This program was a cooperative effort involving three Norton groups representing a superabrasive grinding wheel manufacturer, a diamond film manufacturing division and a ceramic research center. The program was divided into two technical tasks, Task 1, Analysis of Required Grinding Wheel Characteristics, and Task 2, Design and Prototype Development. In Task 1 we performed a parallel path approach with Superabrasive metal-bond development and the higher technical risk, CVD diamond wheel development. For the Superabrasive approach, Task 1 included bond wear and strength tests to engineer bond-wear characteristics. This task culminated in a small-wheel screening test plunge grinding sialon disks. In Task 2, an improved Superabrasive metal-bond specification for low-cost machining of ceramics in external cylindrical grinding mode was identified. The experimental wheel successfully ground three types of advanced ceramics without the need for wheel dressing. The spindle power consumed by this wheel during test grinding of NC-520 sialon is as much as to 30% lower compared to a standard resin bonded wheel with 100 diamond concentration. The wheel wear with this improved metal bond was an order of magnitude lower than the resin-bonded wheel, which would significantly reduce ceramic grinding costs through fewer wheel changes for retruing and replacements. Evaluation of ceramic specimens from both Tasks 1 and 2 tests for all three ceramic materials did not show evidence of unusual grinding damage. The novel CVD-diamond-wheel approach was incorporated in this program as part of Task 1. The important factors affecting the grinding performance of diamond wheels made by CVD coating preforms were determined.

Licht, R.H.; Ramanath, S.; Simpson, M.; Lilley, E.

1996-02-01

133

Final Report on Control Algorithm to Improve the Partial-Load Efficiency of Surface PM Machines with Fractional-Slot Concentrated Windings  

SciTech Connect

Surface permanent magnet (SPM) synchronous machines using fractional-slot concentrated windings are being investigated as candidates for high-performance traction machines for automotive electric propulsion systems. It has been shown analytically and experimentally that such designs can achieve very wide constant-power speed ratios (CPSR) [1,2]. This work has shown that machines of this type are capable of achieving very low cogging torque amplitudes as well as significantly increasing the machine power density [3-5] compared to SPM machines using conventional distributed windings. High efficiency can be achieved in this class of SPM machine by making special efforts to suppress the eddy-current losses in the magnets [6-8], accompanied by efforts to minimize the iron losses in the rotor and stator cores. Considerable attention has traditionally been devoted to maximizing the full-load efficiency of traction machines at their rated operating points and along their maximum-power vs. speed envelopes for higher speeds [9,10]. For example, on-line control approaches have been presented for maximizing the full-load efficiency of PM synchronous machines, including the use of negative d-axis stator current to reduce the core losses [11,12]. However, another important performance specification for electric traction applications is the machine's efficiency at partial loads. Partial-load efficiency is particularly important if the target traction application requires long periods of cruising operation at light loads that are significantly lower than the maximum drive capabilities. While the design of the machine itself is clearly important, investigation has shown that this is a case where the choice of the control algorithm plays a critical role in determining the maximum partial-load efficiency that the machine actually achieves in the traction drive system. There is no evidence that this important topic has been addressed for this type of SPM machine by any other authors. This topic takes on even greater significance for fractional-slot concentrated-winding SPM machine designs. In particular, maximizing the torque/power density of this class of SPM machines typically leads to machine designs with high numbers of poles. The resulting high electrical frequencies can easily result in high stator core losses unless special care is taken during the machine design process. The purpose of this report is to discuss a modified vector control algorithm for a fractional-slot concentrated winding SPM machine that has been developed to maximize the machine's partial-load efficiency over a wide range of operating conditions. For purposes of this discussion, a 55 kW (peak) SPM machine designed to meet requirements established in the US FreedomCar program [13] is used as the basis for demonstrating the proposed technique. A combination of closed-form analysis [14] and finite element analysis (FEA) is used during this investigation.

McKeever, John W [ORNL; Reddy, Patel [University of Wisconsin; Jahns, Thomas M [ORNL

2007-05-01

134

FINAL REPORT ON CONTROL ALGORITHM TO IMPROVE THE PARTIAL-LOAD EFFICIENCY OFSURFACE PM MACHINES WITH FRACTIONAL-SLOT CONCENTRATED WINDINGS  

SciTech Connect

Surface permanent magnet (SPM) synchronous machines using fractional-slot concentrated windings are being investigated as candidates for high-performance traction machines for automotive electric propulsion systems. It has been shown analytically and experimentally that such designs can achieve very wide constant-power speed ratios (CPSR) [1,2]. This work has shown that machines of this type are capable of achieving very low cogging torque amplitudes as well as significantly increasing the machine power density [3-5] compared to SPM machines using conventional distributed windings. High efficiency can be achieved in this class of SPM machine by making special efforts to suppress the eddy-current losses in the magnets [6-8], accompanied by efforts to minimize the iron losses in the rotor and stator cores. Considerable attention has traditionally been devoted to maximizing the full-load efficiency of traction machines at their rated operating points and along their maximum-power vs. speed envelopes for higher speeds [9,10]. For example, on-line control approaches have been presented for maximizing the full-load efficiency of PM synchronous machines, including the use of negative d-axis stator current to reduce the core losses [11,12]. However, another important performance specification for electric traction applications is the machine's efficiency at partial loads. Partial-load efficiency is particularly important if the target traction application requires long periods of cruising operation at light loads that are significantly lower than the maximum drive capabilities. While the design of the machine itself is clearly important, investigation has shown that this is a case where the choice of the control algorithm plays a critical role in determining the maximum partial-load efficiency that the machine actually achieves in the traction drive system. There is no evidence that this important topic has been addressed for this type of SPM machine by any other authors. This topic takes on even greater significance for fractional-slot concentrated-winding SPM machine designs. In particular, maximizing the torque/power density of this class of SPM machines typically leads to machine designs with high numbers of poles. The resulting high electrical frequencies can easily result in high stator core losses unless special care is taken during the machine design process. The purpose of this report is to discuss a modified vector control algorithm for a fractional-slot concentrated winding SPM machine that has been developed to maximize the machine's partial-load efficiency over a wide range of operating conditions. For purposes of this discussion, a 55 kW (peak) SPM machine designed to meet requirements established in the US FreedomCar program [13] is used as the basis for demonstrating the proposed technique. A combination of closed-form analysis [14] and finite element analysis (FEA) is used during this investigation.

Reddy, P.B.; Jahns, T.M.

2007-04-30

135

Modified Brokk Demolition Machine with Remote Operator Console. Innovative Technology Summary Report  

SciTech Connect

The Low-Cost D and D System modifies a commercially available BROKK demolition system for remote viewing and long tether remote operation that provides a portable facility camera pod and interfaces with the Compact Remote Operator Console (TMS Tech ID 2180) to extend the applicability of the BROKK system to projects that require removal of the operator from the work area due to exposure to radiological, chemical, or industrial hazards. The modified BROKK has been integrated with the Compact Remote Operator Console to provide a true remotely operated low-cost D and D system applicable to a wide range of small D and D demolition tasks across the DOE complex.

None

2001-09-01

136

Stretford process operations and chemistry report. Final report  

SciTech Connect

Liquid Redox Sulfur Recovery processes remove H2S from sour gas streams and produce elemental sulfur using a circulating liquor that contains a pH buffer and redox catalysts. The Stretford process is the oldest of the current commercial processes. Despite the advantages of this process, in many instances it has not consistently achieved design performance levels. Improvements in the operability and reliability of the Stretford process would provide additional incentives for its continued use. Much has been learned from research, process improvements and commercial operating experience since the process was first introduced that would allow for better operation of these processes. The report presents this information in response to these needs.

Trofe, T.W.; McIntush, K.E.; Murff, M.C.

1993-10-01

137

Inducing ? oscillations and precise spike synchrony by operant conditioning via brain-machine interface.  

PubMed

Neural oscillations in the low-gamma range (30-50 Hz) have been implicated in neuronal synchrony, computation, behavior, and cognition. Abnormal low-gamma activity, hypothesized to reflect impaired synchronization, has been evidenced in several brain disorders. Thus, understanding the relations between gamma oscillations, neuronal synchrony and behavior is a major research challenge. We used a brain-machine interface (BMI) to train monkeys to specifically increase low-gamma power in selected sites of motor cortex to move a cursor and obtain a reward. The monkeys learned to robustly generate oscillatory gamma waves, which were accompanied by a dramatic increase of spiking synchrony of highly precise spatiotemporal patterns. The findings link volitional control of LFP oscillations, neuronal synchrony, and the behavioral outcome. Subjects' ability to directly modulate specific patterns of neuronal synchrony provides a powerful approach for understanding neuronal processing in relation to behavior and for the use of BMIs in a clinical setting. PMID:23352171

Engelhard, Ben; Ozeri, Nofar; Israel, Zvi; Bergman, Hagai; Vaadia, Eilon

2013-01-23

138

Precision Machining  

NSDL National Science Digital Library

Basic machining processes are introduced on a Web site that is devoted to engineering fundamentals (1). Descriptions and illustrations of drilling, turning, grinding, and other common processes are provided for people with little to no prior machining knowledge. A waterjet is a non-traditional machining technology that uses high pressure streams of water with abrasive additives rather than solid cutting instruments to slice through metal and other materials. An in-depth discussion of waterjet operation and applications is available from Southern Methodist University (2). Waterjets are often cited as being much more precise than traditional machining techniques. The Waterjet Video Vault (3) contains clips of waterjet machines in action. The video of the foam cutting procedure is especially interesting, as it shows how quick and accurate the machining process can be. An online guide to cross process machining, which incorporates elements from various conventional and unconventional techniques, is provided by the Mechanical Engineering Department at Columbia University (4). Some remarkable and innovative techniques that have surfaced over the past few years are outlined, including underwater laser machining and plasma-assisted machining. Entirely different and exotic machining techniques are required for creating microelectromechanical systems (MEMS) and other extremely small devices. The Caltech Micromachining Laboratory (5) maintains an archive of research highlights and papers on its homepage, including a paper on a MEMS-driven flapping wing for a palm-sized aerial vehicle. An online article from Modern Machine Shop (6) outlines some new technologies and research in the area of high speed machining. A particularly interesting section of the article describes a system developed at the University of Florida that aims to enable micromachining to achieve rotational speeds of standard machining processes, specifically up to a half million rotations per minute. Cutting edge waterjet innovations are the subject of a February 2003 feature from a publication of the Society of Manufacturing Engineers (7). Extremely high pressure nozzles are being developed to improve cutting speed, and enhanced software for controlling machine movements is also a focus of study. This news article (8) from June 20, 2003 describes an electrochemical machining process that is being used to fabricate complex nanostructures. The work, produced by German and U.S. researchers, has the potential to compete with current lithographic processes.

Leske, Cavin.

139

LACIE performance predictor final operational capability program description, volume 1  

NASA Technical Reports Server (NTRS)

The program EPHEMS computes the orbital parameters for up to two vehicles orbiting the earth for up to 549 days. The data represents a continuous swath about the earth, producing tables which can be used to determine when and if certain land segments will be covered. The program GRID processes NASA's climatology tape to obtain the weather indices along with associated latitudes and longitudes. The program LUMP takes substrata historical data and sample segment ID, crop window, crop window error and statistical data, checks for valid input parameters and generates the segment ID file, crop window file and the substrata historical file. Finally, the System Error Executive (SEE) Program checks YES error and truth data, CAMS error data, and signature extension data for validity and missing elements. A message is printed for each error found.

1976-01-01

140

Mobile worksystems for decontamination and decommissioning operations. Final report  

SciTech Connect

This project is an interdisciplinary effort to develop effective mobile worksystems for decontamination and decommissioning (D&D) of facilities within the DOE Nuclear Weapons Complex. These mobile worksystems will be configured to operate within the environmental and logistical constraints of such facilities and to perform a number of work tasks. Our program is designed to produce a mobile worksystem with capabilities and features that are matched to the particular needs of D&D work by evolving the design through a series of technological developments, performance tests and evaluations. The Phase I effort was based on a robot called the Remote Work Vehicle (RWV) that was previously developed by CMU for use in D&D operations at the Three Mile Island Unit 2 Reactor Building basement. During Phase I of this program, the RWV was rehabilitated and upgraded with contemporary control and user interface technologies and used as a testbed for remote D&D operations. We established a close working relationship with the DOE Robotics Technology Development Program (RTDP). In the second phase, we designed and developed a next generation mobile worksystem, called Rosie, and a semi-automatic task space scene analysis system, called Artisan, using guidance from RTDP. Both systems are designed to work with and complement other RTDP D&D technologies to execute selective equipment removal scenarios in which some part of an apparatus is extricated while minimally disturbing the surrounding objects. RTDP has identified selective equipment removal as a timely D&D mission, one that is particularly relevant during the de-activation and de-inventory stages of facility transitioning as a means to reduce the costs and risks associated with subsequent surveillance and monitoring. In the third phase, we tested and demonstrated core capabilities of Rosie and Artisan; we also implemented modifications and enhancements that improve their relevance to DOE`s facility transitioning mission.

NONE

1997-02-01

141

Robotic concepts for operation in barren terrain. Final report  

SciTech Connect

We have performed a series of studies and configurations for robots that are capable of operating in rough barren terrains. The environments we are targeting are like those of the moon or other planets in the roughness and starkness of the terrains, the loose and hard materials that range from sandy slopes to boulder fields, and the extremes of temperature that are encountered in such places. We present a mission scenario, requirements and then present and evaluate a mechanism design. Additional subsystem issues of power, communication, sensing, and computing are all addressed with respect to these requirements.

Dowling, K. [Carnegie-Mellon Univ., Pittsburgh, PA (United States)

1993-01-01

142

Goodyear Lake hydroelectric generating station redevelopment. Final operating cost report  

SciTech Connect

The Goodyear Lake how-head hydropower plant resulted from the rehabilitation of an old dam. The project construction costs were $1.722 million, which included a 17% overrun from original cost estimates due chiefly to extraordinary rates of inflation. For the first two years operating costs were $126,500 and $240,100 while revenues were $233,200 and $403,400, respectively. Revenues for year 1 were obtained from sales at 3 cents/kWh and for year 2 at 3.4 cents/kWh. If the rates payable by utilities under PURPA regulations, namely 6 cents/kWh, had been paid the revenues would have nearly doubled. It is concluded that initial cost overruns are not readily recuperable. (LCL)

Not Available

1982-10-01

143

Operational testing of intelligent rail lubrication system. Final report  

SciTech Connect

This IDEA project designs, builds, and demonstrates an automated, computer-controlled onboard intelligent system for applying new environmentally safe and consumable lubricants for rail systems. The IDEA product is to be operationally tested in a commuter rail system (METRA) for providing controlled lubrication on rails and wheel in an environmentally safe way. The lubricant applied to the rail will reduce friction between the wheel and rail and is expected to provide significant benefits in maintenance, safety, and overall economic efficiency. Progressive development of a rail lubrication system for US railroads indicates potential major benefits including reduction in wheel wear, rail wear, and track maintenance costs. Significant benefits transferable to commuter rail and high-speed transit systems are expected as well.

Kumar, S.

1998-06-01

144

Thailand Applied Atmospheric Resources Research Program. Final Report. Volume 3. Demonstration Project Operations Plan.  

National Technical Information Service (NTIS)

This final report, prepared by the Bureau of Reclamation under the PASA, consists of three volumes. Volume 3 presents the operations plan for the demonstration project. Results of the AARRP cloud modeling and field studies suggest that increasing rainfall...

B. A. Silverman C. L. Hartzell W. L. Woodley D. Rosenfeld

1994-01-01

145

Operations-Oriented Performance Measures for Freeway Management Systems: Final Report.  

National Technical Information Service (NTIS)

This report describes the second and final year activities of the project titled Using Operations-Oriented Performance Measures to Support Freeway Management Systems. Work activities included developing a prototype system architecture for testing the use ...

A. Upayokin M. L. Sattler R. E. Brydia S. P. Mattingly

2008-01-01

146

Smart Infrared Inspection System Field Operational Test Final Report  

SciTech Connect

The Smart InfraRed Inspection System (SIRIS) is a tool designed to assist inspectors in determining which vehicles passing through the SIRIS system are in need of further inspection by measuring the thermal data from the wheel components. As a vehicle enters the system, infrared cameras on the road measure temperatures of the brakes, tires, and wheel bearings on both wheel ends of commercial motor vehicles (CMVs) in motion. This thermal data is then presented to enforcement personal inside of the inspection station on a user friendly interface. Vehicles that are suspected to have a violation are automatically alerted to the enforcement staff. The main goal of the SIRIS field operational test (FOT) was to collect data to evaluate the performance of the prototype system and determine the viability of such a system being used for commercial motor vehicle enforcement. From March 2010 to September 2010, ORNL facilitated the SIRIS FOT at the Greene County Inspection Station (IS) in Greeneville, Tennessee. During the course of the FOT, 413 CMVs were given a North American Standard (NAS) Level-1 inspection. Of those 413 CMVs, 384 were subjected to a SIRIS screening. A total of 36 (9.38%) of the vehicles were flagged by SIRIS as having one or more thermal issues; with brakes issues making up 33 (91.67%) of those. Of the 36 vehicles flagged as having thermal issues, 31 (86.11%) were found to have a violation and 30 (83.33%) of those vehicles were placed out-of-service (OOS). Overall the enforcement personnel who have used SIRIS for screening purposes have had positive feedback on the potential of SIRIS. With improvements in detection algorithms and stability, the system will be beneficial to the CMV enforcement community and increase overall trooper productivity by accurately identifying a higher percentage of CMVs to be placed OOS with minimal error. No future evaluation of SIRIS has been deemed necessary and specifications for a production system will soon be drafted.

Siekmann, Adam [ORNL; Capps, Gary J [ORNL; Franzese, Oscar [ORNL; Lascurain, Mary Beth [ORNL

2011-06-01

147

Development and Operation of a Database Machine for Online Access and Update of a Large Database.  

ERIC Educational Resources Information Center

Reviews the development of a fault tolerant database processor system which replaced OCLC's conventional file system. A general introduction to database management systems and the operating environment is followed by a description of the hardware selection, software processes, and system characteristics. (SW)

Rush, James E.

1980-01-01

148

Machine and process characterization  

SciTech Connect

A study was conducted to statistically characterize 11 precision machining centers to determine their operating characteristics and process capabilities. Measurement probes and a ball plate were used for measurement analysis. A generic test part designed with geometric features that the department typically manufactures was machined using various machining processes. A better understanding of each machine's characteristics and process capability was realized through repeating these methods on each machine.

Love, L.W.

1992-12-01

149

Optical Computing in Boltzmann Machines.  

NASA Astrophysics Data System (ADS)

This dissertation covers theoretical and experimental work on applying optical processing techniques ot the operation of a Boltzmann machine. A Boltzmann machine is a processor that solves a problem by iteratively optimizing an estimate of the solution. The optimization is done by finding a minimum of an energy surface over the solution space. The energy function is designed to consider not only data but also a priori information about the problem to assist the optimization. The dissertation first establishes a generic line -of-approach for designing an algorithmic optical computer that might successfully operate using currently realizable analog optical systems for highly-parallel operations. Simulated annealing, the algorithm of the Boltzmann machine, is then shown to be adaptable to this line-of-approach and is chosen as the algorithm to demonstrate these concepts throughout the dissertation. The algorithm is analyzed and optical systems are outlined that will perform the appropriate tasks within the algorithm. From this analysis and design, realizations of the optically-assisted Boltzmann machine are described and it is shown that the optical systems can be used in these algorithmic computations to produce solutions as precise as the single-pass operations of the analog optical systems. Further considerations are discussed for increasing the usefulness of the Boltzmann machine with respect to operating on larger data sets while maintaining the full degrees of parallelism and to increasing the speed by reducing the number of electronical-optical transducers and by utilizing more of the available parallelism. It is demonstgrated how, with a little digital support, the analog optical systems can be used to produce solutions with digital precision but without compromising the speed of the optical computations. Finally there is a short discussion as to how the Boltzmann machine may be modelled as a neuromorphic system for added insight into the computational functioning of the machine.

Ticknor, Anthony James

150

Operant conditioning of a multiple degree-of-freedom brain-machine interface in a primate model of amputation.  

PubMed

Operant conditioning with biofeedback has been shown to be an effective method to modify neural activity to generate goal-directed actions in a brain-machine interface. It is particularly useful when neural activity cannot be mathematically mapped to motor actions of the actual body such as in the case of amputation. Here, we implement an operant conditioning approach with visual feedback in which an amputated monkey is trained to control a multiple degree-of-freedom robot to perform a reach-to-grasp behavior. A key innovation is that each controlled dimension represents a behaviorally relevant synergy among a set of joint degrees-of-freedom. We present a number of behavioral metrics by which to assess improvements in BMI control with exposure to the system. The use of non-human primates with chronic amputation is arguably the most clinically-relevant model of human amputation that could have direct implications for developing a neural prosthesis to treat humans with missing upper limbs. PMID:24109684

Balasubramanian, Karthikeyan; Southerland, Joshua; Vaidya, Mukta; Qian, Kai; Eleryan, Ahmed; Fagg, Andrew H; Sluzky, Marc; Oweiss, Karim; Hatsopoulos, Nicholas

2013-01-01

151

Evaluation of Multi Canister Overpack (MCO) Handling Machine Uplift Restraint for a Seismic Event During Repositioning Operations  

SciTech Connect

Insertion of the Multi-Canister Overpack (MCO) assemblies into the Canister Storage Building (CSB) storage tubes involves the use of the MCO Handling Machine (MHM). During MCO storage tube insertion operations, inadvertent movement of the MHM is prevented by engaging seismic restraints (''active restraints'') located adjacent to both the bridge and trolley wheels. During MHM repositioning operations, the active restraints are not engaged. When the active seismic restraints are not engaged, the only functioning seismic restraints are non-engageable (''passive'') wheel uplift restraints which function only if the wheel uplift is sufficient to close the nominal 0.5-inch gap at the uplift restraint interface. The MHM was designed and analyzed in accordance with ASME NOG-1-1995. The ALSTHOM seismic analysis reported seismic loads on the MHM uplift restraints and EDERER performed corresponding structural calculations to demonstrate structural adequacy of the seismic uplift restraint hardware. The ALSTHOM and EDERER calculations were performed for a parked MHM with the active seismic restraints engaged, resulting in uplift restraint loading only in the vertical direction. In support of development of the CSB Safety Analysis Report (SAR), an evaluation of the MHM seismic response was requested for the case where the active seismic restraints are not engaged. If a seismic event occurs during MHM repositioning operations, a moving contact at a seismic uplift restraint would introduce a friction load on the restraint in the direction of the movement. These potential horizontal friction loads on the uplift restraints were not included in the existing restraint hardware design calculations. One of the purposes of the current evaluation is to address the structural adequacy of the MHM seismic uplift restraints with the addition of the horizontal friction associated with MHM repositioning movements.

SWENSON, C.E.

2000-05-15

152

Fatality Assessment and Control Evaluation (FACE) Report for California: Machine Operator Crushed Between the Plates of an Injection Mold While Performing Maintenance.  

National Technical Information Service (NTIS)

A 47-year-old machine operator died when crushed between the plates of a plastic injection mold. The victim was performing maintenance at the time of the incident. The victim was asked by the shift supervisor to correct one problem. A second problem arose...

2001-01-01

153

Drilling Machines: Vocational Machine Shop.  

ERIC Educational Resources Information Center

The lessons and supportive information in this field tested instructional block provide a guide for teachers in developing a machine shop course of study in drilling. The document is comprised of operation sheets, information sheets, and transparency masters for 23 lessons. Each lesson plan includes a performance objective, material and tools,…

Thomas, John C.

154

Design and Analysis of a High-Gain Observer for the Operation of SPM Machines Under Saturation  

Microsoft Academic Search

This paper presents a high-gain observer of the rotor position for the control of surface permanent magnet synchronous machines under loaded conditions, e.g., saturation. Determining the rotor flux position of permanent magnet AC machines under no load is simpler, since its flux and rotor position coincide. How- ever under load and in the presence of saturation in particular, the flux

Sinisa Jurkovic; Elias G. Strangas

2011-01-01

155

"Master" neurons induced by operant conditioning in rat motor cortex during a brain-machine interface task.  

PubMed

Operant control of a prosthesis by neuronal cortical activity is one of the successful strategies for implementing brain-machine interfaces (BMI), by which the subject learns to exert a volitional control of goal-directed movements. However, it remains unknown if the induced brain circuit reorganization affects preferentially the conditioned neurons whose activity controlled the BMI actuator during training. Here, multiple extracellular single-units were recorded simultaneously in the motor cortex of head-fixed behaving rats. The firing rate of a single neuron was used to control the position of a one-dimensional actuator. Each time the firing rate crossed a predefined threshold, a water bottle moved toward the rat, until the cumulative displacement of the bottle allowed the animal to drink. After a learning period, most (88%) conditioned neurons raised their activity during the trials, such that the time to reward decreased across sessions: the conditioned neuron fired strongly, reliably and swiftly after trial onset, although no explicit instruction in the learning rule imposed a fast neuronal response. Moreover, the conditioned neuron fired significantly earlier and more strongly than nonconditioned neighboring neurons. During the first training sessions, an increase in firing rate variability was seen only for the highly conditionable neurons. This variability then decreased while the conditioning effect increased. These findings suggest that modifications during training target preferentially the neuron chosen to control the BMI, which acts then as a "master" neuron, leading in time the reconfiguration of activity in the local cortical network. PMID:23658171

Arduin, Pierre-Jean; Frégnac, Yves; Shulz, Daniel E; Ego-Stengel, Valérie

2013-05-01

156

Individual and work related factors associated with symptoms of musculoskeletal complaints. II. Different risk factors among sewing machine operators.  

PubMed Central

Individual and work related risk factors in the development of occupational musculoskeletal complaints were studied in a group of 210 female production workers, mainly sewing machine operators. Another group of 35 female employees performing secretarial or laboratory duties were also included. The production workers had significantly higher symptom scores with respect to self reported musculoskeletal complaints than the group with more varied work tasks for the head, neck, shoulders, and arms, but not for the low back, hips, and the lower extremities. No significant differences were found in symptom level between geographically separate groups of production workers with similar work tasks. The main individual risk factor identified in this study was the experience of previous, similar symptoms in the same body region, but this factor only accounted for 2-3% of total variance in symptom score for the neck and shoulders. Other individual factors of importance for symptoms in the neck and shoulders were "signs of psychological problems" and "tendency of muscle tension," but these only account for about 1% of total variance in symptom score. Symptoms in the head and low back showed complex relations with individual parameters.

Westgaard, R H; Jansen, T

1992-01-01

157

Your Sewing Machine.  

ERIC Educational Resources Information Center

The programed instruction manual is designed to aid the student in learning the parts, uses, and operation of the sewing machine. Drawings of sewing machine parts are presented, and space is provided for the student's written responses. Following an introductory section identifying sewing machine parts, the manual deals with each part and its…

Peacock, Marion E.

158

Knowledge-based systems for electric utility operation using the PROLOG language: Final report  

Microsoft Academic Search

The objective of this research project was to investigate the desirability of developing knowledge based systems in the PROLOG, PROgramming in LOGic, language for electric utility system operation applications. Two major steps were completed to achieve this objective. The first step was to develop a protection system simulator and diagnostican in the PROLOG language. Finally, a demonstration volt\\/VAR dispatch knowledge

Tweed

1988-01-01

159

Revised Final Remedial Investigation. Addendum Report for Operable Units 4, 8, and 9. Volume I.  

National Technical Information Service (NTIS)

This revised final report presents the results of previous investigations as well as the results of the Phase I and Phase II RI sampling and analysis for 11 SWMUs within three operable units at Tooele Army Depot (TEAD). TEAD is a National Priorities List ...

J. Hampel-Stephens J. Ludlam K. Davis L. Clark P. Seig

1997-01-01

160

An Operations Research and Systems Engineering Study of a University Library. Final Report (No. 5).  

ERIC Educational Resources Information Center

This fifth and final report describes activities since June, 1965. Centralization of the Eisenhower Library Collection was completed early in 1965 and a circulation system became operational in April, 1965. The main portion of this report focuses on various aspects of the circulation system such as preparation of identification cards; the…

Johns Hopkins Univ., Baltimore, MD. Milton S. Eisenhower Library.

161

State revolving fund: Final report to Congress. Financial status and operations of water pollution control revolving funds  

SciTech Connect

This is the final report to Congress. The SRF final report addresses the financial status and operations of water pollution control revolving funds established by the States under Title VI of the Clean Water Act (CWA).

Not Available

1991-10-01

162

The operational behavior of microprocessor-controlled and pulsed inverter-fed synchronous machines with permanent magnet excitation  

NASA Astrophysics Data System (ADS)

A mathematical model for synchronous machines excited with permanent magnets was developed for the investigation of the steady and dynamic behavior of inverter-fed three-phase drives. The characteristics of inverter-fed three-phase drives and their subsystems are depicted. A microprocessor-based vectorial pulse width modulation method was developed. The armature current control, speed control, field reduction in synchronous machines excited with permanent magnets, and feeding with nonsinusoidal currents of synchronous machines excited with permanent magnets were analyzed. The location of the poles was determined by the identification of the initial location. This results in controlled starting of the drive immediately after switching on the control.

Orlik, Bernd

1987-05-01

163

Metal-Matrix Composites and Thermal Spray Coatings for Earth Moving Machines. Final Report (July 2, 2001-June 11, 2003).  

National Technical Information Service (NTIS)

In an effort to realize minimum of a 2x increase in wear life of ground engaging components used on mining machines, two potentially cost effective processes were explored for the production of tailored, highly abrasion resistant materials: (1) hybrid pre...

D. T. Weaver M. T. Kiser F. W. Zok C. G. Levi J. Hawk

2004-01-01

164

Electron Beam Welding of 6061-T6 Covers to A356-T6 Machined Cast Housings: Final Report.  

National Technical Information Service (NTIS)

An electron beam welding process was developed to replace the manual gas tungsten arc welding process for welding 6061-T6 aluminum covers to the A356-T6 cast aluminum machined housing for a Filter Pack Assembly. Design change recommendations must be incor...

G. P. Miller

1988-01-01

165

Fullerene Machines  

NASA Technical Reports Server (NTRS)

Fullerenes possess remarkable properties and many investigators have examined the mechanical, electronic and other characteristics of carbon SP2 systems in some detail. In addition, C-60 can be functionalized with many classes of molecular fragments and we may expect the caps of carbon nanotubes to have a similar chemistry. Finally, carbon nanotubes have been attached to t he end of scanning probe microscope (Spill) tips. Spills can be manipulated with sub-angstrom accuracy. Together, these investigations suggest that complex molecular machines made of fullerenes may someday be created and manipulated with very high accuracy. We have studied some such systems computationally (primarily functionalized carbon nanotube gears and computer components). If such machines can be combined appropriately, a class of materials may be created that can sense their environment, calculate a response, and act. The implications of such hypothetical materials are substantial.

Globus, Al; Saini, Subhash (Technical Monitor)

1998-01-01

166

Simple Machines  

NSDL National Science Digital Library

Online Simple Machines Assignment OBJECTIVES: Student\\'s will be able to name and describe all seven simple machines. Students will be able to identify simple machines that they use everyday. Example: Clock = Gear INSTRUCTIONS: 1. Click on the Simple Machines Glossary page and familiarize yourself with the seven simple machines. Simple Machines Glossary Page 2. Students are to click on ...

Oldroyd, Mr.

2007-09-26

167

14 CFR 330.29 - What information must air taxi operators submit on Form 330 (Final) and Form 330-C?  

Code of Federal Regulations, 2011 CFR

...2014-01-01 false What information must air taxi operators submit on Form 330 (Final...REGULATIONS PROCEDURES FOR COMPENSATION OF AIR CARRIERS Application Procedures § 330.29 What information must air taxi operators submit on Form 330...

2014-01-01

168

Relational Algebra Machine GRACE  

Microsoft Academic Search

Most of the data base machines proposed so far which adopts a filter processor as their basic unit show poor performance for the heavy load operation such as join and projection etc., while they can process the light load operations such as selection and update for which a full scan of a file suffices. These machines which incorporates n processors

Masaru Kitsuregawa; Hidehiko Tanaka; Tohru Moto-oka

1982-01-01

169

Columbia River System Operation Review : Final Environmental Impact Statement, Main Report Exhibits.  

SciTech Connect

This Volume is a part of the Final Environmental Impact Statement (EIS) for the Columbia River System. This volume contains technical exhibits of cultural resources and commentary on the (System Operation Review) SOR process. The Confederated Tribes of the Umatilla Indian Reservation comment is the majority of the material in the volume, in the Consultation Plan, Identification of trust resources; Criteria for the selection of a System Operating Strategy; comment on rights protection and implementation of Federal Trust responsibility; analysis of the draft EIS. Comment by other Native American Tribes and groups is also included: Confederated Tribes of the Colville Reservation; Kootenai Tribe of Idaho; Spokane Tribe of Indians; Coeur d` Alene tribe.

Columbia River System Operation Review (U.S.)

1995-11-01

170

Columbia River System Operation Review : Final Environmental Impact Statement, Main Report.  

SciTech Connect

The System Operation Review (SOR) Final EIS addresses four actions: (a) need to develop coordinated strategy for managing the multiple uses of the Federal Columbia River system (System Operating Strategy [SOS]); (b) need to provide interested parties other than management agencies with a long-term role in system planning (Forum); (c) need to renew or change current Canadian Entitlement Allocation Agreements (CEAA); and (d) need to renegotiate and renew the Pacific Northwest Coordination Agreement (PNCA). SOS alternatives analyzed are: (1) operation prior to Endangered Species Act listings of salmon stocks; (2) current operations (no action); (3) stable storage project operation; (4) natural river operation; (5) fixed drawdown; (6) operating strategies proposed by the U.S. Fish and Wildlife Service, National Marine Fisheries Service, State fisheries agencies, Native American tribes, and Federal operating agencies; and (7) Preferred Alternative. The seven Forum alternatives analyzed are: (1) decisionmaking by the SOR lead agencies (preferred alternative); (2) decisionmaking by SOR lead agencies and recommendations by an existing regional entity; (3) decisionmaking by SOR lead agencies and recommendations by a new regional entity; (4) decisionmaking by a Federal consultation forum; (5) decisionmaking by a new entity; (6) decisionmaking by one Federal operating agency; (7) decisionmaking by a Federal agency other than an operating agency. PNCA alternatives analyzed are: (1) no replacement contract; (2) contract to maximize regional power benefits; (3) roll over existing PNCA; (4) current PNCA with modified operating procedures (preferred alternative); (5) current PNCA with nonpower modifications. CEAA alternatives include: (1) no action (no replacement of current allocation agreements); (2) entitlement allocation: 55 percent Federal; 45 percent non-Federal; (3) entitlement allocation: 70 percent Federal, 30 percent non-Federal (preferred alternative); (4) no agreement.

Columbia River System Operation Review (U.S.); United States. Bonneville Power Administration; United States. Army. Corps of Engineers. North Pacific Division; United States. Bureau of Reclamation. Pacific Northwest Region.

1995-11-01

171

Advanced technology and manufacturing practices for machining and inspecting metal matrix composites. Final CRADA report for CRADA number Y-1292-0092  

SciTech Connect

Lockheed Martin Energy Systems, Inc. (Energy Systems) and the Lanxide Corporation (Lanxide) negotiated a Cooperative Research and Development Agreement (CRADA) to develop advanced technology and manufacturing practices for machining and inspecting metal matrix composites (MMC). The objective of this CRADA was to develop machining parameters to allow manufacturing of automotive components from MMCs. These parts exhibit a range of shapes and dimensional tolerances and require a large number of machining operations. The common characteristic of the components is the use of the light weight MMC materials to replace heavier materials. This allows smaller and lighter moving parts and supporting structural components thereby increasing fuel mileage. The CRADA was divided into three areas: basic investigation of cutting parameters, establishment of a mock production line for components, and optimization of parameters in the mock facility. This report covers the manufacturing of MMCs and preliminary Phase I testing for silicon carbide having various loading percentages and extensive Phase I testing of cutting parameters on 30% alumina loaded aluminum. On January 26, 1995, a letter from the vice president, technology at Lanxide was issued terminating the CRADA due to changes in business. 9 refs., 18 figs., 3 tabs.

Fell, H.A.; Shelton, J.E.; LaMance, G.M.; Kennedy, C.R.

1995-02-26

172

Cost estimates of operating onsite spent fuel pools after final reactor shutdown  

SciTech Connect

This report presents estimates of the annual costs of operating spent fuel pools at nuclear power stations after the final shutdown of one or more onsite reactors. Its purpose is to provide basic spent fuel storage cost information for use in evaluating DOE's reference nuclear waste management system, as well as alternate systems. The basic model of an independent spent fuel storage installation (ISFSI) used in this study was based on General Electric Corporation's Morris Operation and was modified to reflect mean storage capabilities at an unspecified, or generic,'' US reactor site. Cost data for the model came from several sources, including both operating and shutdown nuclear power stations and existing ISFSIs. Duke Power Company has estimated ISFSI costs based on existing spent fuel storage costs at its nuclear power stations. Similarly, nuclear material handling facilities such as the Morris Operation, the West Valley Demonstration Project, and the retired Humbolt Bay nuclear power station have compiled spent fuel storage cost data based on years of operating experience. Consideration was given to the following factors that would cause operating costs to vary among pools: (1) The number of spent fuel pools at a given reactor site; (2) the number of operating and shutdown reactors onsite; (3) geographic location; and (4) pool storage capacity. 10 ref., 6 figs., 7 tabs.

Rod, S R

1991-08-01

173

Evaluation of alternative corrosion inhibitors for gas-fired ammonia/water refrigeration machines. Final report, April 1993-April 1995  

SciTech Connect

The report presents the test results on the use of silicate compounds chosen as environmentally safe alternatives to the sodium chromate corrosion inhibitors that are currently used to protect carbon steel surfaces in ammonia/water refrigeration machines. Silicates were selected from a larger group of compounds for testing in standard, residential 3-ton ammonia water chillers after they had been screened for their effectiveness by electrochemical techniques, coupon immersion tests in autoclaves, and tests in chillers. Various surface pretreatments using silicates were also tested in an attempt to avoid stress-corrosion cracking (SCC) that had occurred in previous studies using silicate-inhibited chillers that had been pretreated with sodium nitrate.

Hindin, B.; Agrawal, A.K.

1995-04-01

174

Evaluation of a dual beam laser Doppler displacement meter retrofitted to a coordinate measuring machine. Final report  

SciTech Connect

A dual beam laser Doppler displacement measuring system was mounted to a fixed-table, cantilever-type coordinate measuring machine (CMM) to establish the feasibility of real time angular error correction for each CMM axis. The performance improvement was evaluated relative to the CMM`s standard scales. The dual beam system proved to have no advantage over a single beam laser due to an inability to measure the actual angular errors at the probe location, but showed potential for substantial accuracy improvement over the standard CMM scales when geometry errors were software corrected.

Ramsdale, S.J.; Hanshaw, R.A.

1997-05-01

175

Fullerene Machines  

NASA Technical Reports Server (NTRS)

Recent computational efforts at NASA Ames Research Center and computation and experiment elsewhere suggest that a nanotechnology of machine phase functionalized fullerenes may be synthetically accessible and of great interest. We have computationally demonstrated that molecular gears fashioned from (14,0) single-walled carbon nanotubes and benzyne teeth should operate well at 50-100 gigahertz. Preliminary results suggest that these gears can be cooled by a helium atmosphere and a laser motor can power fullerene gears if a positive and negative charge have been added to form a dipole. In addition, we have unproven concepts based on experimental and computational evidence for support structures, computer control, a system architecture, a variety of components, and manufacture. Combining fullerene machines with the remarkable mechanical properties of carbon nanotubes, there is some reason to believe that a focused effort to develop fullerene nanotechnology could yield materials with tremendous properties.

Globus, Al; Saini, Subhash

1998-01-01

176

The Mochovce final treatment center for liquid radioactive waste introduced to active trial operation  

SciTech Connect

The Final Treatment Centre (FTC) for Mochovce Nuclear Power Plant (NPP) have been designed for treatment and final conditioning of radioactive liquid and wet waste produced by named NPP equipped with Russian VVER-440 type of reactors. Treated wastes comprise radioactive concentrates, spent resin and sludge. VUJE Inc. as an experienced company in field of treatment of radioactive waste in Slovakia has been chosen as main contractor for technological part of FTC. During the realisation of project the future operator of Centre required the contractor to solve the treatment of wastes produced in the process of NPP A-1 decommissioning. On the basis of this requirement the project was modified in order to enable manipulations with waste products from A-1 NPP transported to Centre in steel drums. The initial project was prepared in 2003. The design and manufacture of main components were performed in 2004 and 2005. FTC civil works started in August 2004. Initial nonradioactive testing of the system parts were carried out from April to September 2006, then the tests of systems started with model concentrates and non-radioactive resins. After the processes evaluation the radioactive test performed from February 2007. A one-year trial operation of facility is planned for completion during 2007 and 2008. The company JAVYS, Inc. is responsible for radioactive waste and spent fuel treatment in the Slovak republic and will operate the FTC during trial operation and after its completion. This Company has also significant experience with operation of Jaslovske Bohunice Treatment Centre. The overall capacity of the FTC is 820 m{sup 3}/year of concentrates and 40 m{sup 3}/year of spent resin and sludge. Bituminization and cementation were provided as main technologies for treatment of these wastes. Treatment of concentrate is performed by bituminization on Thin Film Evaporator with rotating wiping blades. Spent resin and sludge are decanted, dried and mixed with bitumen in blade homogeniser. The bitumen product is discharged into 200 dm{sup 3} steel drums. Drums with bitumen product or drums originated from A-1 NPP are loaded into Fibre Reinforced Concrete containers (FRC) and grouted with cement. Cement grout is prepared from the mixture of cement, additive and radioactive over-concentrate. By formulating the cement grout with evaporator concentrates the maximum radioactivity is fixed in cement matrix and volume of final waste product is minimized. A batch mixer with rotating blades is used to produce the cement grout. The grouted FRC containers are stored in the expedition hall and after 28 days of curing are transported to final disposal. After the start of routine operation, the FTC provides treatment for all liquid and wet LLW produced from the operation of the Mochovce NPP. The final product of the FTC is a FRC loaded with bitumen product in drums and filled with radioactive cement product. This container meets all limits for final disposal in the National Radioactive Waste Repository at Mochovce. This paper introducing the main parts of FTC and describes the technological procedures including the basic technological parameters for both used technologies, their working capacity and the overall waste flow. The evaluation of experience gained in the phases of Centre construction and commissioning and partially trial operation as well is a part of this paper (Evaluation of completion works process and time schedule, the process of individual system parts testing, testing of systems using model media, radioactive testing and trial operation). (authors)

Krajc, T.; Stubna, M.; Kravarik, K.; Zatkulak, M. [VUJE Trnava, Inc. (Slovakia); Slezak, M.; Remias, V. [Javys - Jadrova a vyradovacia spolocnost, a.s. - Nuclear and Decommissioning Company, plc., Tomasikova 22, 821 02 Bratislava (Slovakia)

2007-07-01

177

A one-step intrinsic and extrinsic calibration method for laser line scanner operation in coordinate measuring machines  

Microsoft Academic Search

A technique for intrinsic and extrinsic calibration of laser line scanners, also called laser triangulation sensors (LTSs), for integration in a coordinate measuring machine (CMM) is presented in this paper. Setting out from the modeling of a commercial LTS for use in a CMM and the algorithms implemented for image capture and processing, with the use of a gauge object,

J. Santolaria; J. J. Pastor; F. J. Brosed; J. J. Aguilar

2009-01-01

178

Human-machine co-operation in car driving for safe lateral control in bends: function delegation and mutual control  

Microsoft Academic Search

This paper aims to identify in-car human-machine cooperation with automation for safety purposes through two experiments carried out on lateral control in bends. The first experiment tested a function delegation mode (FDM) where lateral control is fully automated and longitudinal control remains un der driver control. This experiment demonstrated that there were serious dif ficulties in returning to manual control

Jean-Michel Hoc; Franck Mars; Élise Jolly

2006-01-01

179

Weapons of mass destruction in the developing world. What are the operational options. Final report  

SciTech Connect

The proliferation in quantity and quality of weapons of mass destruction serve as a threat of great consequence to U.S. operational forces. Operational options for action are explored within the national military strategy concepts of forward presence, deterrence, and crisis/regional contingency response. Three questions and associated issues related to operational art are posed for each concept: (1) what condition must be produced to achieve the strategic goal, (2) what events will most likely result in the desired condition, and (3) how should resources be applied to produce those events. The resulting analysis offers the following conclusions: (1) complementary efforts by all instruments of national power--political, diplomatic, economic, and military--are necessary; (2) knowledge, training, and equipment are the first line of defense; (3) persuasion as well as confrontation is necessary; (4) effective deterrence requires capability, credibility, and communication; and (5) training and weapons for retaliation-in-kind remain the final alternative.

Minner, D.K.

1992-06-19

180

Computer-aided system for the initial setting of injection molding machine  

NASA Astrophysics Data System (ADS)

Determination of injection molding machine setting is usually carried out by an experienced machine operator. By considering the mold geometry, polymer type and machine model, the operator decides an initial setting based on his own knowledge. This knowledge could include material and machine data, empirical rules and simple formulae. A computer system based on this knowledge is developed for computing an initial setting for an injection molding machine. The system first determines the possible processing conditions by considering only the material type and machine model. Then an initial processing condition is determined from these possible conditions by reasoning using the empirical rules. This reasoning is formalized by fuzzy logic. Finally, the machine setting corresponds to the determined initial processing condition is calculated by simple formulae. The performance of the system has been verified by experiments. Results show that the computed setting is acceptable for simple geometry.

Tan, Kim H.; Yuen, M. M.

1996-03-01

181

Introspective Machine.  

National Technical Information Service (NTIS)

An introspective machine, capable of passing judgment on its own deductive performances, is modelled and analyzed. First, the class of ideal machines which is provided with unlimited resources is studied. Since ideal introspective machines are usually unf...

G. A. W. Vreeswijk

1989-01-01

182

TEMPO machine  

SciTech Connect

TEMPO is a transformer powered megavolt pulse generator with an output pulse of 100 ns duration. The machine was designed for burst mode operation at pulse repetition rates up to 10 Hz with minimum pulse-to-pulse voltage variations. To meet the requirement for pulse duration a nd a 20-..omega.. output impedance within reasonable size constraints, the pulse forming transmission line was designed as two parallel water-insulated, strip-type Blumleins. Stray capacitance and electric fields along the edges of the line elements were controlled by lining the tank with plastic sheet.

Rohwein, G.J.; Lancaster, K.T.; Lawson, R.N.

1986-06-01

183

Phase 3 Final Topical Report for the Remote Operated Vehicle with C02 Blasting (ROVCO2)  

SciTech Connect

This report documents the third and final phase of the Remote Operated Vehicle with CO2 Blasting (ROVCO2) Program. The Program=s goal is to develop and demonstrate a tool to improve the productivity of concrete floor decontamination. In Phase 3 of the ROVCO2 program, the workhead and the COYOTEE end-effector were redesigned, and effectiveness and productivity tests were performed. This report documents the development activities. The results show that the ROVCO2 system is an efficient decontamination tool, but with relatively slow production rates.

None

1998-04-14

184

Design and operation checklists for zero discharge power plant water systems. Final report  

SciTech Connect

This report presents an overview of the Zero Discharge Symposium in Denver, Colorado, sponsored by the Electric Power Research Institute. It is a compilation of problem areas common to zero discharge power plants and possible approaches for avoiding or resolving these problems. This report is organized as a series of checklists to provide a quick reference for use by all parties involved in the design and operation of zero discharge power plants. These checklists address issues to be considered during initial project planning, design, construction, startup, operation and, if necessary, retrofit. The checklists consolidate in a single comprehensive source much of the information presented in papers at the symposium or recorded during the active question and answer sessions. For reference, the appendices include a list of all zero discharge plants by state and locator map. Finally, a summary of EPRI research related to integrated water management is presented in the appendix.

Jorden, R.M.

1985-06-01

185

Machine Shop Grinding Machines.  

ERIC Educational Resources Information Center

This curriculum manual is one in a series of machine shop curriculum manuals intended for use in full-time secondary and postsecondary classes, as well as part-time adult classes. The curriculum can also be adapted to open-entry, open-exit programs. Its purpose is to equip students with basic knowledge and skills that will enable them to enter the…

Dunn, James

186

Conception and Realization of a Test Bench of Dry Bearings under Helium: Comparative Material Tests for Machining Pistons: Final Report.  

National Technical Information Service (NTIS)

The aim of the present work is the selection of wear resistant materials, treatments or coatings for a piston in a cylinder, with the following operating conditions: (1) no lubrication; (2) linear reciprocating motion; (3) high speed (from 3 to 10 m/s); a...

M. Dancette M. Blondeau A. Esteve

1984-01-01

187

Chemical Agent Monitor (CAM) follow-on operational test and evaluation simulant test strategy. Final report, May 1988-April 1989  

SciTech Connect

This report was intended to provide technical guidance to the U.S. Army Armor and Engineering (A E) Board in the area of simulant use for the Chemical Agent Monitor (CAM) Follow-on Operational Test and Evaluation (FOT E). The Operational Science Branch (Op Sci Br) was requested to support the A E Board in their effort to design an FOT E for the CAM using methyl salicylate (MS) as the H mode (mustard agent) simulant. Personnel from Op Sci Br were asked to design contamination technology and monitoring methods to test the machine/man interface and use doctrine, and analyze how well data is collected and evaluated.

Seitzinger, A.T.; Grasso, P.S.; Guelta, M.A.

1990-06-01

188

Ohio Coal Testing and Development Facility - Construction and operation. Final report  

SciTech Connect

On June 14, 1987, the Ohio Coal Development Office (OCDO) executed a grant agreement with ICF Kaiser Engineers (ICF Kaiser) for the planning and design (Phase I) of a Demonstration Advanced Technology Coal Preparation Facility. Subsequently, on December 1, 1990, OCDO executed a grant agreement with the American Electric Power Service Corporation (AEPSC) through its subsidiary, the Ohio Power Company, for the final design and construction (Phase II), testing and operation (Phase III), and marketing and future operation (Phase IV) of the facility. These phases were subcontracted to ICF Kaiser. AEPSC co-sponsored the project and donated a site at the Central Ohio Coal Company`s Unionville Coal Preparation Plant for locating the test plant. Central Ohio Coal supplied coal handling services, waste-product disposal, and water. The Ohio Power Company provided project oversight, electric power, and the test coals. The test results from the operation of the 30 tph advanced coal cleaning plant demonstrated that combining conventional physical coal cleaning with emerging advanced physical coal cleaning technologies was a cost-effective method to reduce sulfur emissions of Ohio coals. The following is a summary of the key findings of this project.

Ferris, D.D.

1996-03-01

189

Progress in Documentation: Machine Translation and Machine-Aided Translation.  

ERIC Educational Resources Information Center

Discusses the prospects for fully automatic machine translation of good quality. Sections include history and background, operational and experimental machine translation systems of recent years, descriptions of interactive systems and machine-assisted translation, and a general survey of present problems and future possibilities. (VT)

Hutchins, W. J.

1978-01-01

190

PASM (partitionable SIMD\\/MIND machine) parallel-processing system: Hardware design and intelligent operating system concepts. Final report  

Microsoft Academic Search

Many of today's scientific and industrial problems require enormous computing power. Since circuit switching speeds are reaching fundamental limits, avenues to speed up computations other than that using faster components are being explored. One such avenue is the use of parallelism. PASM is a dynamically reconfigurable SIMD\\/MIMD parallel processing system with up to 1,024 processing elements (PEs). It can be

Schwederski

1986-01-01

191

A one-step intrinsic and extrinsic calibration method for laser line scanner operation in coordinate measuring machines  

NASA Astrophysics Data System (ADS)

A technique for intrinsic and extrinsic calibration of laser line scanners, also called laser triangulation sensors (LTSs), for integration in a coordinate measuring machine (CMM) is presented in this paper. Setting out from the modeling of a commercial LTS for use in a CMM and the algorithms implemented for image capture and processing, with the use of a gauge object, a one-step calibration procedure has been developed to obtain both intrinsic parameters—laser plane, CCD sensor and camera geometry—and extrinsic parameters which relate the LTS's reference system to the CMM's reference system, integrating both mathematical models. This method performs both calibrations in a single step, thus avoiding the digitalization of a reference sphere in order to obtain the extrinsic parameters, or optimization procedures subsequent to LTS calibration. The results obtained in accuracy and repeatability tests performed on gauge geometric primitives attest to the viability of this technique for the integration of LTSs in CMMs.

Santolaria, J.; Pastor, J. J.; Brosed, F. J.; Aguilar, J. J.

2009-04-01

192

NEMO medium voltage converter factory acceptance, operational and final integration tests  

NASA Astrophysics Data System (ADS)

The NEMO Collaboration, as part of the KM3NeT EU-funded consortium, is developing technical solutions for the construction of a cubic-kilometer scale neutrino telescope in the Mediterranean sea several kilometers below the sea level and far from the shore. In this framework, after years of design, development, assembly and testing the Alcatel deep sea medium voltage power converter (MVC) is ready for deployment at 100 km from the Capo Passero shore station. The MVC converts the 10 kV to an instrument-friendly 375 V for a 10 kW power. The MVC will be presented with focus on the factory acceptance, operational and final integration tests that recently have been carried out.

Cocimano, Rosanna; NEMO Collaboration

2011-01-01

193

Columbia River System Operation Review : Final Environmental Impact Statement, Appendix O: Economic and Social Impact.  

SciTech Connect

This Appendix O of the Final Environmental Impact Statement for the Columbia River System measures the economic and social effects of the alternative system operation strategies and includes both geographic and methodology components. Areas discussed in detail include the following: purpose, scope and process; an economic history of the Columbia River Basin and its use today including the Columbia River and Socio-economic development in the Northwest and Major uses of the River System; Analysis procedures and methodologies including national economic evaluation, the concepts, analysis of assumptions, analysis for specific river uses, water quality, Regional evaluation, analysis, and social impacts; alternatives and impacts including implementation costs, andromous fish, resident fish and wildlife, flood control, irrigation and municipal and industrial water supply, navigation impacts, power, recreation, annual costs, regional economic analysis. Extensive comparison of alternatives is included.

Columbia River System Operation Review (U.S.)

1995-11-01

194

An incremental machine learning mechanism applied to robot navigation  

Microsoft Academic Search

We apply an incremental machine learning algorithm to the problem of robot navigation. The learning algorithm is applied to a simple robot simulation to automatically induce a list of declarative rules. The rules are pruned in order to remove the rules that are operationally useless. The final set is initially used to control the robot navigating an obstacle-free path planned

Nawwaf N. Kharma; Majd Alwan; Peter Y K Cheung

1996-01-01

195

Knowledge-based systems for electric utility operation using the PROLOG language: Final report  

SciTech Connect

The objective of this research project was to investigate the desirability of developing knowledge based systems in the PROLOG, PROgramming in LOGic, language for electric utility system operation applications. Two major steps were completed to achieve this objective. The first step was to develop a protection system simulator and diagnostican in the PROLOG language. Finally, a demonstration volt/VAR dispatch knowledge based system was developed in the PROLOG language. It was shown that a realistic model of an electrical system and its interconnections could be developed by interacting between the PROLOG knowledge based system and a FORTRAN power flow program. Results of the simulation indicated that the decisions reached in the volt/VAR dispatch program were consistent with the operation of a control center. For control applications in which the rules utilized are prioritized, the structure of the PROLOG language provides an inference mechanism that has an advantage over the basic inference process of OPS-5. The conclusion of this study is that PROLOG is a highly desirable language for the development of knowledge based systems for electric utility applications. 2 figs., 11 tabs.

Tweed, E.D.

1988-02-01

196

Human Factors Assessment: The Passive Final Approach Spacing Tool (pFAST) Operational Evaluation  

NASA Technical Reports Server (NTRS)

Automation to assist air traffic controllers in the current terminal and en route air traff ic environments is being developed at Ames Research Center in conjunction with the Federal Aviation Administration. This automation, known collectively as the Center-TRACON Automation System (CTAS), provides decision- making assistance to air traffic controllers through computer-generated advisories. One of the CTAS tools developed specifically to assist terminal area air traffic controllers is the Passive Final Approach Spacing Tool (pFAST). An operational evaluation of PFAST was conducted at the Dallas/Ft. Worth, Texas, Terminal Radar Approach Control (TRACON) facility. Human factors data collected during the test describe the impact of the automation upon the air traffic controller in terms of perceived workload and acceptance. Results showed that controller self-reported workload was not significantly increased or reduced by the PFAST automation; rather, controllers reported that the levels of workload remained primarily the same. Controller coordination and communication data were analyzed, and significant differences in the nature of controller coordination were found. Controller acceptance ratings indicated that PFAST was acceptable. This report describes the human factors data and results from the 1996 Operational Field Evaluation of Passive FAST.

Lee, Katharine K.; Sanford, Beverly D.

1998-01-01

197

Kid Machine  

NSDL National Science Digital Library

This activity is on page 3 (continued on page 2) of the pdf, part of the Simple Machines Discovery Box. In this fun activity, learners "create" a complex machine by simulating the parts in action. Learners move their bodies and make sounds as if they are individual parts of a moving machine. Then learners discover what happens when part of a machine is broken and problem solve ways to fix it.

Omsi

2004-01-01

198

Electrostatic Machines  

NSDL National Science Digital Library

This website from Antonio Carlos M. De Queiroz, an associate professor at the Federal University of Rio de Janeiro, illustrates a number of different electrostatic machines. The site includes details and images of machines built by the professor as well as many other historical machines of this type. Some information is also available in Portugese.

De Queiroz, Antonio C.

2011-07-13

199

Simple Machines  

NSDL National Science Digital Library

This is an online activity about simple machines. Learners will try their hand at putting these amazing devices to work. They will use several simple machines to help "build" a tree house. This is an excellent activity to demonstrate how science - in particular, simple machines - are at work in our everyday lives.

Cosi

2000-01-01

200

Final Report - Advanced MEA's for Enhanced Operating Conditions, Amenable to High Volume Manufacture  

SciTech Connect

This report summarizes the work completed under a 3M/DOE contract directed at advancing the key fuel cell (FC) components most critical for overcoming the polymer electrolyte membrane fuel cell (PEMFC) performance, durability & cost barriers. This contract focused on the development of advanced ion exchange membranes & electrocatalysts for PEMFCs that will enable operation under ever more demanding automotive operating conditions & the use high volume compatible processes for their manufacture. Higher performing & more durable electrocatalysts must be developed for PEMFCs to meet the power density & lifetime hours required for FC vehicles. At the same time the amount of expensive Pt catalyst must be reduced to lower the MEA costs. While these two properties are met, the catalyst must be made resistant to multiple degradation mechanisms to reach necessary operating lifetimes. In this report, we present the work focused on the development of a completely new approach to PEMFC electrocatalyts, called nanostructured thin film (NSTF) catalysts. The carbon black supports are eliminated with this new approach which eliminates the carbon corrosion issue. The thin film nature of the catalyst significantly improves its robustness against dissolution & grain growth, preserving the surface area. Also, the activity of the NSTF for oxygen reduction is improved by over 500% compared to dispersed Pt catalyts. Finally, the process for fabricating the NSTF catalysts is consistent with high volume roll-good manufacturing & extremely flexible towards the introduction of new catalyst compositions & structures. This report documents the work done to develop new multi-element NSTF catalysts with properties that exceed pure Pt, that are optimized for use with the membranes discussed below, & advance the state-of-the-art towards meeting the DOE 2010 targets for PEMFC electrocatalysts. The work completed advances the understanding of the NSTF catalyst technology, identifies new NSTF-ternary catalyst materials for higher performance, documents enhanced durability under multiple types of accelerated tests by factors of 10x to 50x over conventional catalysts, & demonstrates their performance & durability in large area MEA FC stack tests. The PEMFC ion exchange membrane is the other key functioning FC component on which work was completed. While improvements have been made to standard PFSA type membranes, they still require humidification to achieve adequate proton conductivity & so their use at elevated temperatures & drier operating conditions is limited. Membranes with increased durability & conductivity under hotter, drier conditions allow the use of FC's in many applications, particularly automotive. Towards this goal, 2 approaches were pursued in the work reported here. The first part was designed for immediate application at drier conditions & operating temperatures between 85C and 120C, focused on the development of a membrane based on a low equivalent weight (EW), perfluorinated sulfonic acid (PFSA) ionomer for good ionic conductivity at low humidification, & the use of stabilizing additives for improved oxidative stability. The ionomer used was developed at 3M & has a shorter acid containing side-chain than the Nafion™ ionomer. This ionomer also has a higher T? & higher modulus than that of a Nafion™ membrane of the same EW, allowing lower EW ionomers to be prepared with very good mechanical properties. In addition, more than 50 stabilizing additives were evaluated in ex-situ, Fenton’s tests & more than 10 of these were incorporated into membranes & evaluated in accelerated FC tests. This work led to thin (25-30 micron) cast membranes with substantially improved conductivity & durability under simulated automotive conditions, compared to membranes currently available. The 2nd body of membrane work was focused on developing & characterizing 3 approaches for making new PEM's for operation under hot (>120C) & dry (dew point <80C) FC conditions: inorganic materials with enhanced proton conductivity, polymer matrices swollen with lo

Debe, Mark K.

2007-09-30

201

Advances of implementing NC machine tools discussed  

Microsoft Academic Search

Numerical control machine tools which are one of the principal resources of reequipment, mechanization and automation of small series and series production in machine building were examined. The continually increasing volume of NC machine tools which are produced and introduced is economically significant for introduction of these machine tools to operation and organization of their effective use. Organizational and technical

Y. P. Kukuyev; Y. V. Trukhan

1984-01-01

202

KEY COMPARISON: Final report on CCL-K6: Calibration of coordinate measuring machine two-dimensional artifacts (ball & bore plates)  

NASA Astrophysics Data System (ADS)

The Mutual Recognition Arrangement of the CIPM indicates that a metrological equivalence of national measurement standards and calibration certificates issued by national metrology institutes (NMIs) should be established by a set of key comparisons chosen and organized by the Consultative Committees of the Comité Internationale des Poids et Mesures on key techniques. The CCL (Comité Consultative de Longueur), identified several key comparisons in the field of dimensional metrology. In particular, it decided that a coordinate measuring machine (CMM) two-dimensional (2-D) artifact should be carried out. CENAM (Centro Nacional de Metrología) was designated as pilot laboratory and NMIs of signatories of the Metre Convention were invited to participate. The comparison is aimed to support the Calibration and Measurement Capabilities (CMCs) claims of NMIs for CMM 2-D standards calibration. Twelve NMIs from four Regional Metrology Organizations finished the comparison and one withdrew. The final participants were as follows: NMIA (CSIRO), Australia INMS-NRC, Canada NIM, China CMI, Czech Republic BNM-LNE, France PTB, Germany NMIJ (NRLM), Japan NMi, Netherlands VNIIM, Russia NPL, United Kingdom NIST, USA (1) CENAM, Mexico (1). A Draft B report was circulated among the participants and, after review and approval by all of the participants, it became the final report. It comprises all the information about the comparison: the measurement results, the choice of a Key Comparison Reference Value, the estimation of its uncertainty, the performance of each participant with respect to this value and the Birge ratio for each measurand of the two artifacts. It was decided afterwards at CCL that the exercise be classed as a supplementary comparison but the reference of CCL-K6 was kept. In an Appendix the equivalences of all measurands of each laboratory with respect to the reference value are reported for both artifacts, as well as the pairwise equivalences between laboratories for all measurands of both artifacts. The results are shown on tables as well as in plots. The comparison was scheduled to start in January 2001 and span the circulation until December 2002. The circulation scheme was delayed for many reasons. It finally ended in September 2004. The following main conclusions may be drawn: The comparison was a valuable exercise and produced valid results as the artifacts proved to be stable throughout the comparison exercise. Therefore, the results obtained may be taken as a proof of the performance of the participants in CMM 2-D standards calibration as declared in their corresponding CMCs. Out of the twelve participants, ten were in good agreement for the Steel Ball Plate and nine for the Zerodur Bore Plate. The KCRV was determined from these values. The Birge ratios obtained for the measuring elements of both artifacts proved that there is consistency between the results obtained at the declared uncertainties of the participants. However, it would seem that the uncertainty declarations in general were rather conservative. The results on the Steel Ball Plate were slightly better than those on the Zerodur Bore Plate. As a conclusion, the participants are a little bit better at measuring steel artifacts than Zerodur ones. Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/. The final report has been peer-reviewed and approved for publication by the CCL, according to the provisions of the CIPM Mutual Recognition Arrangement (MRA).

Viliesid, Miguel

2009-01-01

203

The firefly machine: online evolware  

Microsoft Academic Search

We present the firefly machine, an evolving hardware system, demonstrating that “evolving ware” (or “evolware”) can be attained. The system is based on the cellular programming approach, in which parallel cellular machines evolve to solve computational tasks. The firefly system operates with no reference to an external device, such as a computer that carries out genetic operators, thereby exhibiting online

Moshe Sipper; Maxime Goeke; Daniel Mange; Andre Stauffer; Eduardo Sanchez; Marco Tomassini

1997-01-01

204

Assessment and Determination of Basic Competencies Necessary for Utility Operators Utilizing Ground Water Supplies. Part 1. Final Report.  

ERIC Educational Resources Information Center

The document is a final report of a study of the basic competencies required by water utility operators using a ground water source, conducted at Southwest Wisconsin Vocational-Technical Institute from July to August 1974. The overall purpose of the project is to develop a competency-based curriculum model for statewide use in municipal…

Southwest Wisconsin Vocational-Technical Inst., Fennimore.

205

The Mochovce final treatment center for liquid radioactive waste introduced to active trial operation  

Microsoft Academic Search

The Final Treatment Centre (FTC) for Mochovce Nuclear Power Plant (NPP) have been designed for treatment and final conditioning of radioactive liquid and wet waste produced by named NPP equipped with Russian VVER-440 type of reactors. Treated wastes comprise radioactive concentrates, spent resin and sludge. VUJE Inc. as an experienced company in field of treatment of radioactive waste in Slovakia

T. Krajc; M. Stubna; K. Kravarik; M. Zatkulak; M. Slezak; V. Remias

2007-01-01

206

Nonplanar machines  

SciTech Connect

This talk examines methods available to minimize, but never entirely eliminate, degradation of machine performance caused by terrain following. Breaking of planar machine symmetry for engineering convenience and/or monetary savings must be balanced against small performance degradation, and can only be decided on a case-by-case basis. 5 refs.

Ritson, D. (Stanford Linear Accelerator Center, Menlo Park, CA (USA))

1989-05-01

207

Electric machine  

DOEpatents

An interior permanent magnet electric machine is disclosed. The interior permanent magnet electric machine comprises a rotor comprising a plurality of radially placed magnets each having a proximal end and a distal end, wherein each magnet comprises a plurality of magnetic segments and at least one magnetic segment towards the distal end comprises a high resistivity magnetic material.

El-Refaie, Ayman Mohamed Fawzi (Niskayuna, NY); Reddy, Patel Bhageerath (Madison, WI)

2012-07-17

208

Excavating machines  

SciTech Connect

The excavating machine has a cutter carrying boom carried by a boom support member which can be swung about an axis extending in the direction of the roadway. The machine includes a cutter unit and a stay unit each of which is releasably anchorable in the roadway and each of which can be advanced relative to the other unit.

Plummer, D.

1980-10-21

209

Machine Learning.  

ERIC Educational Resources Information Center

As scientists seek to develop machines that can "learn," that is, solve problems by imitating the human brain, a gold mine of information on the processes of human learning is being discovered, expert systems are being improved, and human-machine interactions are being enhanced. (SK)

Kirrane, Diane E.

1990-01-01

210

Machine Learning  

Microsoft Academic Search

The purpose of this chapter is to present fundamental ideas and techniques of machine learning suitable for the field of this book, i.e., for automated scientific discovery. The chapter focuses on those symbolic machine learning methods, which produce results that are suitable to be interpreted and understood by humans. This is particularly important in the context of automated scientific discovery

Achim Hoffmann; Ashesh Mahidadia

2009-01-01

211

Machine musicianship  

NASA Astrophysics Data System (ADS)

The training of musicians begins by teaching basic musical concepts, a collection of knowledge commonly known as musicianship. Computer programs designed to implement musical skills (e.g., to make sense of what they hear, perform music expressively, or compose convincing pieces) can similarly benefit from access to a fundamental level of musicianship. Recent research in music cognition, artificial intelligence, and music theory has produced a repertoire of techniques that can make the behavior of computer programs more musical. Many of these were presented in a recently published book/CD-ROM entitled Machine Musicianship. For use in interactive music systems, we are interested in those which are fast enough to run in real time and that need only make reference to the material as it appears in sequence. This talk will review several applications that are able to identify the tonal center of musical material during performance. Beyond this specific task, the design of real-time algorithmic listening through the concurrent operation of several connected analyzers is examined. The presentation includes discussion of a library of C++ objects that can be combined to perform interactive listening and a demonstration of their capability.

Rowe, Robert

2002-05-01

212

Method and apparatus for monitoring machine performance  

DOEpatents

Machine operating conditions can be monitored by analyzing, in either the time or frequency domain, the spectral components of the motor current. Changes in the electric background noise, induced by mechanical variations in the machine, are correlated to changes in the operating parameters of the machine.

Smith, Stephen F. (Loudon, TN); Castleberry, Kimberly N. (Harriman, TN)

1996-01-01

213

The Zig Zag Machine. Module 14.  

ERIC Educational Resources Information Center

This module on the zig zag machine, one in a series dealing with industrial sewing machines, their attachments, and operation, covers one topic: performing special operations on the zig zag machine. These components are provided: an introduction, directions, an objective, learning activities, student information, a student self-check, and a…

South Carolina State Dept. of Education, Columbia. Office of Vocational Education.

214

Southwest Electronic One-Stop Shopping (EOSS): Field Operational Test. Final Evaluation Report.  

National Technical Information Service (NTIS)

The Southwest Electronic One-Stop Shopping System (EOSS) Operational Test was selected for funding by the Federal Highway Administration (FHWA) in 1994. Though it was selected as one of the field operational tests (FOTs) directed by the Intermodal Surface...

1999-01-01

215

Automated fiber pigtailing machine  

DOEpatents

The Automated Fiber Pigtailing Machine (AFPM) aligns and attaches optical fibers to optoelectronic (OE) devices such as laser diodes, photodiodes, and waveguide devices without operator intervention. The so-called pigtailing process is completed with sub-micron accuracies in less than 3 minutes. The AFPM operates unattended for one hour, is modular in design and is compatible with a mass production manufacturing environment. This machine can be used to build components which are used in military aircraft navigation systems, computer systems, communications systems and in the construction of diagnostics and experimental systems. 26 figs.

Strand, O.T.; Lowry, M.E.

1999-01-05

216

Automated fiber pigtailing machine  

DOEpatents

The Automated Fiber Pigtailing Machine (AFPM) aligns and attaches optical fibers to optoelectonic (OE) devices such as laser diodes, photodiodes, and waveguide devices without operator intervention. The so-called pigtailing process is completed with sub-micron accuracies in less than 3 minutes. The AFPM operates unattended for one hour, is modular in design and is compatible with a mass production manufacturing environment. This machine can be used to build components which are used in military aircraft navigation systems, computer systems, communications systems and in the construction of diagnostics and experimental systems.

Strand, Oliver T. (Castro Valley, CA); Lowry, Mark E. (Castro Valley, CA)

1999-01-01

217

Environmental assessment of the relocation of Neutron Tube Target Loading Operations. Final document.  

National Technical Information Service (NTIS)

Neutron Tube Target Loading (NTTL) is an operation that involves the transferring (i.e. loading) of radioactive tritium gas onto metal target disks under an inert nitrogen atmosphere using a glovebox operation. The relocation of NTTL operations from the P...

1995-01-01

218

Control Room operations: an investigation of the task of the operator in a Colliery Control Room. Final report  

SciTech Connect

A detailed study of the ergonomics aspects of four representative Colliery Control Rooms was carried out. Numerous ergonomics limitations, many common to each of the control rooms studied, were identified particularly in relation to workspace dimensions, console layout and lighting. In order to overcome these limitations in future designs, a report detailing the Ergonomics Principles of Colliery Control Room design and Layout was prepared on the basis of the information obtained. Task analysis carried out during the studies revealed that control room operators could have a direct effect on production and that ergonomics aspects were involved in these situations. Indications of potential ergonomics problems in the wider sphere of job design were also identified particularly in relation to information handling.

Simpson, G.C.; Best, C.F.; Ferguson, C.A.; Graveling, R.A.; Nicholl, A.G.M.

1982-09-01

219

Paradigms for machine learning  

NASA Technical Reports Server (NTRS)

Five paradigms are described for machine learning: connectionist (neural network) methods, genetic algorithms and classifier systems, empirical methods for inducing rules and decision trees, analytic learning methods, and case-based approaches. Some dimensions are considered along with these paradigms vary in their approach to learning, and the basic methods are reviewed that are used within each framework, together with open research issues. It is argued that the similarities among the paradigms are more important than their differences, and that future work should attempt to bridge the existing boundaries. Finally, some recent developments in the field of machine learning are discussed, and their impact on both research and applications is examined.

Schlimmer, Jeffrey C.; Langley, Pat

1991-01-01

220

Mobile machine hazardous working zone warning system  

SciTech Connect

A warning system is provided for a mobile working machine to alert an individual of a potentially dangerous condition in the event the individual strays into a hazardous working zone of the machine. The warning system includes a transmitter mounted on the machine and operable to generate a uniform magnetic field projecting beyond an outer periphery of the machine in defining a hazardous working zone around the machine during operation thereof. A receiver, carried by the individual and activated by the magnetic field, provides an alarm signal to alert the individual when he enters the hazardous working zone of the machine.

Schiffbauer, William H. (Connellsville, PA); Ganoe, Carl W. (Pittsburgh, PA)

1999-01-01

221

Mobile machine hazardous working zone warning system  

DOEpatents

A warning system is provided for a mobile working machine to alert an individual of a potentially dangerous condition in the event the individual strays into a hazardous working zone of the machine. The warning system includes a transmitter mounted on the machine and operable to generate a uniform magnetic field projecting beyond an outer periphery of the machine in defining a hazardous working zone around the machine during operation. A receiver, carried by the individual and activated by the magnetic field, provides an alarm signal to alert the individual when he enters the hazardous working zone of the machine. 3 figs.

Schiffbauer, W.H.; Ganoe, C.W.

1999-08-17

222

Mobile machine hazardous working zone warning system  

SciTech Connect

A warning system is provided for a mobile working machine to alert an individual of a potentially dangerous condition in the event the individual strays into a hazardous working zone of the machine. The warning system includes a transmitter mounted on the machine and operable to generate a uniform magnetic field projecting beyond an outer periphery of the machine in defining a hazardous working zone around the machine during operation thereof. A receiver, carried by the individual and activated by the magnetic field, provides an alarm signal to alert the individual when he enters the hazardous working zone of the machine.

Schiffbauer, W.H.; Ganoe, C.W.

1996-12-31

223

Vertical EDM (Electric Discharge Machining) Using Modular Programming.  

National Technical Information Service (NTIS)

The usual function of computer numerically controlled (CNC) machining programs is to specify a sequence of machining operations. When CNC is applied to electric discharge machining (EDM), the possibilities and needs are much greater. This paper describes ...

J. E. Fuller

1989-01-01

224

Scribbling Machines  

NSDL National Science Digital Library

In this activity, learners explore electronics and motion by making a Scribbling Machine, a motorized contraption that moves in unusual ways and leaves a mark to trace its path. Itâs made from simple materials and is based on the idea of motion created by an offset motor. Try using harvested motors and switches from discarded toys and electronics to make your Scribbling Machine - this not only keeps costs down, but is a playful and inventive way to explore how everyday objects work. To take the activity further, you can also incorporate PicoCrickets to make your Scribbling Machine more intelligent and to explore computers.

Exploratorium

2013-01-30

225

Machine tool calibration: Geometric test uncertainty depends on machine tool performance  

Microsoft Academic Search

In order to show a sufficient geometric performance, every machine tool has to be calibrated geometrically before it may come into operation. The geometric machine errors have to be identified. They can afterwards be compensated either mechanically or numerically in the machine control.Machine tools are usually calibrated geometrically by performing a sequence of different measurements to identify single errors such

B. Bringmann; W. Knapp

2009-01-01

226

Operational Readiness Review Final Report for K Basin Fuel Transfer System  

SciTech Connect

An Operational Readiness Review (ORR) was conducted by the U.S. Department of Energy (DOE), Richland Operations Office (RL) to verify that an adequate state of readiness had been achieved for startup of the K Basin Fuel Transfer System (FTS). The DOE ORR was conducted during the period November 6-18, 2002. The DOE ORR team concluded that the K Basin Fuel Transfer System is ready to start operations, subject to completion and verification of identified pre-start findings. The ORR was conducted in accordance with the Spent Nuclear Fuel (SNF) K Basin Fuel Transfer System (FTS) Operational Readiness Review (ORR) Plan of Action and the Operational Readiness Review Implementation Plan for K Basin Fuel Transfer System. Review activities consisted of staff interviews, procedure and document reviews, and observations of normal facility operations, operational upset conditions, and an emergency drill. The DOE ORR Team also reviewed and assessed the adequacy of the contractor ORR3 and the RL line management review. The team concurred with the findings and observations identified in these two reports. The DOE ORR for the FTS evaluated the contractor under single-shift operations. Of concern to the ORR Team was that SNF Project management intended to change from a single-shift FTS operation to a two-shift operation shortly after the completion of the DOE ORR. The ORR team did not assess two-shift FTS operations and the ability of the contractor to conduct a smooth transition from shift to shift. However, the DOE ORR team did observe an operational upset drill that was conducted during day shift and carried over into swing shift; during this drill, swing shift was staffed with fewer personnel as would be expected for two-shift operations. The facility was able to adequately respond to the event with the reduced level of staff. The ORR Team was also able to observe a Shift Manager turnover meeting when one shift manager had to be relieved during the middle of the day. The ORR Team did not have the opportunity to observe a shift turnover from one crew to another. The ORR Team has evaluated the risk of not observing this activity and considers the risk to be minimal based on the fact that operating staff are very familiar with the FTS equipment and its procedures, and because existing Conduct of Operations processes and procedures are adequate and implemented. Because the ORR Team has not observed two-shift FTS operations, we recommend that additional RL oversight be provided at the start of two-shift FTS operations to evaluate the adequacy of crew turnovers.

DAVIES, T.H.

2002-10-01

227

Operational Experiences Tuning the ATF2 Final Focus Optics Towards Obtaining a 37nm Electron Beam IP Spot Size  

SciTech Connect

The primary aim of the ATF2 research accelerator is to test a scaled version of the final focus optics planned for use in next-generation linear lepton colliders. ATF2 consists of a 1.3 GeV linac, damping ring providing low-emittance electron beams (< 12pm in the vertical plane), extraction line and final focus optics. The design details of the final focus optics and implementation at ATF2 are presented elsewhere. The ATF2 accelerator is currently being commissioned, with a staged approach to achieving the design IP spot size. It is expected that as we implement more demanding optics and reduce the vertical beta function at the IP, the tuning becomes more difficult and takes longer. We present here a description of the implementation of the tuning procedures and describe operational experiences and performances.

White, Glen; /SLAC; Seryi, Andrei; /SLAC; Woodley, Mark; /SLAC; Bai, Sha; /Beijing, Inst. High Energy Phys.; Bambade, Philip; /Orsay, LAL; Renier, Yves; /Orsay, LAL; Bolzon, Benoit; /Annecy, LAPP; Kamiya, Yoshio; /Tokyo U., ICEPP; Komamiya, Sachio; /Tokyo U.; Oroku, Masahiro; /Tokyo U.; Yamaguchi, Yohei; /Tokyo U.; Yamanaka, Takashi; /Tokyo U.; Kubo, Kiyoshi; /KEK, Tsukuba; Kuroda, Shigeru; /KEK, Tsukuba; Okugi, Toshiyuki; /KEK, Tsukuba; Tauchi, Toshiaki; /KEK, Tsukuba; Marin, Eduardo; /CERN

2012-07-06

228

Rube Goldberg and the Meaning of Machines  

NSDL National Science Digital Library

Simple and compound machines are designed to make work easier. When we encounter a machine that does not fit this understanding, the so-called machine seems absurd. Through the cartoons of Rube Goldberg, students are engaged in critical thinking about the way his inventions make simple tasks even harder to complete. As the final lesson in the simple machines unit, the study of Rube Goldberg machines can help students evaluate the importance and usefulness of the many machines in the world around them.

Integrated Teaching And Learning Program

229

Developpement d'une Machine Frigorifique Autonome a Piston Libre Fonctionnant Suivant un Cycle de Rankine (Development of a Self-Adapting, Free-Piston Refrigeration Machine Operating According to the Rankine Cycle).  

National Technical Information Service (NTIS)

This research project deals with a free-piston refrigerating machine supplying a net output of 3 kW at 10C, with 25C ambient, driven by solar heat at low temperature: 70C. A previous contract (nr 528-78-1 ESB) led to the design of a prototype, which will ...

D. P. Vokaer Y. Vandendael

1983-01-01

230

Integration of Cockpit Displays for Surface Operations: The Final Stage of a Human-Centered Design Approach  

Microsoft Academic Search

A suite of cockpit navigation displays for low-visibility airport surface operations has been designed by researchers at NASA Ames Research Center following a human-centered process. This paper reports on the final research effort in this process that examined the procedural integration of these technologies into the flight deck. Using NASA Ames' high-fidelity Advanced Concepts Flight Simulator, eighteen airline crews completed

Becky L. Hooey; David C. Foyle; Anthony D. Andre

2000-01-01

231

Electromechanical Machining.  

National Technical Information Service (NTIS)

The purpose of this work was to adapt the new process of electromechanical machining (EMM), in which metal is cut by direct contact of the tool with an electrochemically polarized workpiece, to turning and drilling. This investigation, which followed expe...

R. M. Latanision K. C. Nielsen

1976-01-01

232

Math Machines  

NSDL National Science Digital Library

The mission of the Math Machines organization is to "improve the quality of mathematical education, enhance the transfer of mathematical thinking into other classes, and increase students' ability to apply rigorous mathematics outside the classroom." Their website supports a National Science Foundation ATE grant-supported project designed to improve teaching in the areas of Mathematics, Science, and Technology at the high school and college levels. This improved learning results from using math, science, and technology principles to build and control various machines such as pointers and robots or "math machines", which are simple devices that provide an immediate, physical, dynamic expression to abstract mathematical equations. The website provides information links on Educational Theory, Classroom Activities, Project Workshops, Calculators & Programs, and Machine Construction Instructions for Building: Closed Circuits, Servo Motors, Controllers, Robot Boards and more. There is also contact information, an FAQ section, as well as upcoming events.

2010-05-18

233

Mining machine  

SciTech Connect

A haulage system for a mining machine comprises a mining machine mounted on and/or guided by a conveyor and reciprocable with respect thereto, the conveyor being provided with a rack having plural rows of teeth of identical pitch, with the teeth of one row staggered with respect to an adjacent row(s), and the machine being provided with at least one power driven haulage sprocket comprising plural sets of peripherally arranged teeth of identical pitch, one set being angularly staggered with respect to an adjacent set(s), whereby one set is engageable with each row of teeth of the rack. The invention also includes a mining machine provided with such a power driven haulage sprocket, and a rack as above described and provided with end fittings for securing in articulated manner to an adjacent rack.

Parrott, G.A.

1985-05-07

234

Monel Machining  

NASA Astrophysics Data System (ADS)

Castle Industries, Inc. is a small machine shop manufacturing replacement plumbing repair parts, such as faucet, tub and ballcock seats. Therese Castley, president of Castle decided to introduce Monel because it offered a chance to improve competitiveness and expand the product line. Before expanding, Castley sought NERAC assistance on Monel technology. NERAC (New England Research Application Center) provided an information package which proved very helpful. The NASA database was included in NERAC's search and yielded a wealth of information on machining Monel.

1983-01-01

235

Final Report for the Operational Readiness Review fsor Startup of the K Basins Sludge Water System.  

National Technical Information Service (NTIS)

An Operational Readiness Review (ORR) was conducted by the U.S. Department of Energy (DOE), Richland Operations Office (RL) to verify that an adequate state of readiness has been achieved for startup of the K East Basin Sludge Water System (SWS) as applie...

2004-01-01

236

Study of universal-pressure boiler for cycling operation. Final report  

Microsoft Academic Search

Babcock and Wilcox, under contract with Electric Power Research Institute, conducted preliminary design studies and a series of cycling field tests on an oil-fired, subcritical once-through boiler designed for base load operation. The field tests indicated what design changes should be made to the plant prior to being used for cyclic operation. Major concerns with the existing plant are thermal

Crispin

1982-01-01

237

Political and legal implications of developing and operating a satellite power system. Final report  

Microsoft Academic Search

A number of political and legal implications of developing and operating a satellite power system (SPS) are identified and studied in this report. These include the vulnerability of SPS to actions of adversaries, communications impacts, the legality of an SPS in orbit including on-orbit military protection, alleviation of political concerns about deployment and operation of SPS, programmatic planning for SPS

Hazelrigg; G. A. Jr

1977-01-01

238

Final Report - Advanced MEA's for Enhanced Operating Conditions, Amenable to High Volume Manufacture  

Microsoft Academic Search

This report summarizes the work completed under a 3M\\/DOE contract directed at advancing the key fuel cell (FC) components most critical for overcoming the polymer electrolyte membrane fuel cell (PEMFC) performance, durability & cost barriers. This contract focused on the development of advanced ion exchange membranes & electrocatalysts for PEMFCs that will enable operation under ever more demanding automotive operating

Debe; Mark K

2007-01-01

239

Hospital incinerator operator training course. Volume 2. Presentation slides. Final report  

SciTech Connect

This document is Volume II of a three-volume training course for operators of hospital-waste incinerators. The course provides hospital waste-incinerator operators with a basic understanding of the principles of incineration and air pollution control and to identify good operation and maintenance (O M) practices. Proper O M, in addition to reducing air emissions, improves equipment reliability and performance, prolongs equipment life, and helps to ensure proper ash burnout. Volume II contains classroom materials including a copy of the presentation slides so that students can follow along during the class and worksheets that can be completed during the classroom sessions. The course includes 11 separate classroom sessions covering topics such as basic combustion principles and incinerator design; air pollution control equipment design, function, operation, and monitoring; incinerator operation; maintenance inspections; typical problems; and State regulations.

Neulicht, R.M.; Chaput, L.S.; Wallace, D.D.; Turner, M.B.; Smith, S.G.

1989-03-01

240

Parallelism in random access machines  

Microsoft Academic Search

A model of computation based on random access machines operating in parallel and sharing a common memory is presented. The computational power of this model is related to that of traditional models. In particular, deterministic parallel RAM's can accept in polynomial time exactly the sets accepted by polynomial tape bounded Turing machines; nondeterministic RAM's can accept in polynomial time exactly

Steven Fortune; James Wyllie

1978-01-01

241

The Blindstitch Machine. Module 11.  

ERIC Educational Resources Information Center

This module on the purpose and use of the blindstitch machine, one in a series on clothing construction for industrial sewing machine operators designed for student self-study, contains three sections. Each section includes the following parts: an introduction, directions, an objective, learning activities, student information, student self-check,…

South Carolina State Dept. of Education, Columbia. Office of Vocational Education.

242

Columbia River System Operation Review : Final Environmental Impact Statement, Appendix J: Recreation.  

SciTech Connect

This Appendix J of the Final Environmental Impact Statement for the Columbia River System discusses impacts on the recreational activities in the region. Major sections include the following: scope and processes; recreation in the Columbia River Basin today - by type, location, participation, user characteristics, factors which affect usage, and managing agencies; recreation analysis procedures and methodology; and alternatives and their impacts.

Columbia River System Operation Review (U.S.)

1995-11-01

243

Hospital incinerator operator training course. Volume 1. Student handbook. Final report  

SciTech Connect

This document is Volume I of a three-volume training course for operators of hospital-waste incinerators. The course provides hospital-waste incinerator operators with a basic understanding of the principles of incineration and air pollution control and to identify good operation and maintenance (O M) practices. Proper O M, in addition to reducing air emissions, improves equipment reliability and performance, prolongs equipment life, and helps to ensure proper ash burnout. The course is not intended to replace site-specific, hands-on training of operators with the specific equipment to be operated. Volume I is narrative in style and can be used as a reference at the completion of the class. Review questions and answers for students are provided at the end of each classroom session. The course includes 11 separate classroom sessions covering topics such as basic combustion principles and incinerator design; air pollution control equipment design, function, operation, and monitoring; incinerator operation; maintenance inspections; typical problems; and State regulations.

Neulicht, R.M.; Chaput, L.S.; Wallace, D.D.; Turner, M.B.; Smith, S.G.

1989-03-01

244

Machine Vision  

NSDL National Science Digital Library

An overview of a generic image-based machine vision system is provided on this Web site (1). The tutorial describes the main components of such a system, how its accuracy is measured, and what scientific and industrial applications benefit from machine vision. A more technical perspective of machine vision technology is given in an online publication of the Automated Imaging Association (2). Monthly feature articles discuss breaking issues related to machine vision, and several technical papers can be downloaded, which are sorted into categories such as three dimensional imaging and nanotechnology. Researchers from the MIT's Artificial Intelligence Laboratory (3) are investigating how to enable a computer to interpret visual and audio signals from its human user. By using machine perception systems to track the user's gaze, for example, the computer could ascertain the focus of the user's attention, thereby facilitating interaction between the human and the computer. The project's homepage includes numerous research papers, as well as video demonstrations of some of its systems. Machine vision is also finding its way into vehicles. A March 2003 news article (4) highlights a field test in Michigan of a collision avoidance system that uses, among other things, machine vision to warn drivers that they are approaching a slower or stopped object too quickly. The 3D Computer Vision Group at Carnegie Mellon University (5) is involved in several projects, including three dimensional object recognition and humanoid robot vision. Many of the group's recent publications are available for download. NASA's Mars Exploration Rovers, the second of which was launched in July 2003, have vision systems that will let them safely navigate rough terrain. These systems are described in this conference paper (6), including specifics of the stereo vision algorithm and insights into future missions. A new implementation of machine vision comes from a former researcher from Cambridge University. His shape recognition system, which is detailed in this news article (7), is reportedly much more related to human visual processes than existing techniques. For additional developments related to this evolving technology, Machine Vision News (8) has information about worldwide research and new applications of machine vision systems.

Leske, Cavin.

245

Operational readiness review for the Waste Experimental Reduction Facility. Final report  

SciTech Connect

An Operational Readiness Review (ORR) at the Idaho National Engineering Laboratory`s (INEL`s) Waste Experimental Reduction Facility (WERF) was conducted by EG&G Idaho, Inc., to verify the readiness of WERF to resume operations following a shutdown and modification period of more than two years. It is the conclusion of the ORR Team that, pending satisfactory resolution of all pre-startup findings, WERF has achieved readiness to resume unrestricted operations within the approved safety basis. ORR appraisal forms are included in this report.

Not Available

1993-11-01

246

Assessment of PEA's Operational Efficiency: 1. Corporate Planning (CP) Study. Final Report.  

National Technical Information Service (NTIS)

Ths study, conducted by Southern Electric International, was funded by the U.S. Trade and Development Agency. The report assesses the operational efficiency of the Provincial Electricity Authority in Bangkok, Thailand. Volume 2 is divided into the followi...

1997-01-01

247

Assessment of PEA's Operational Efficiency: 5. Human Resources (HR) Study, Appendices. Final Report.  

National Technical Information Service (NTIS)

This study, conducted by Southern Electric International, was funded by the U.S. Trade and Development Agency. The report assesses the operational efficiency of the Provincial Electricity Authority in Bangkok, Thailand. Volume 9 is divided into the follow...

1997-01-01

248

Assessment of PEA's Operational Efficiency: 4. Economic and Financial Systems (EF) Study. Final Report.  

National Technical Information Service (NTIS)

This study, conducted by Southern Electric International, was funded by the U.S. Trade and Development Agency. The report assesses the operational efficiency of the Provincial Electricity Authority in Bangkok, Thailand. Volume 7 is divided into the follow...

1997-01-01

249

Operation of Larger Trucks on Roads with Restrictive Geometry. Volume 1. Final Report.  

National Technical Information Service (NTIS)

The purpose of the study was to determine the effect of large truck configurations on traffic operations while negotiating roads and streets with restrictive geometry. Truck types of concern included truck-tractor-semitrailers with trailer lengths of 40, ...

C. V. Zegeer J. E. Hummer F. Hanscom

1987-01-01

250

Final Orwell ROPE (Reservoir Operation Plan Evaluation) Report and Environmental Assessment.  

National Technical Information Service (NTIS)

This report presents an evaluation of the existing reservoir operation plan and certain project features that affect the benefit-producing capability of the project. The plan formulation and evaluation were guided by the problems that were identified and ...

1986-01-01

251

Evaluation of the Effectiveness of the Operation Restore Trust Demonstration. Final Report, Executive Summary and Overview.  

National Technical Information Service (NTIS)

Operation Restore Trust (ORT) was jointly developed by the Office of Inspector General (OIG), the Administration on Aging (AoA), and the Health Care Financing Administration (HCFA) as a model to demonstrate improved methods for investigation and prosecuti...

A. J. Baker A. J. White C. M. Robinson K. H. Quinn L. B. Reardon N. R. Burstein R. F. Coulam R. J. Schmitz

1997-01-01

252

Municipal-waste-combustion systems - operation and maintenance study. Final report  

Microsoft Academic Search

The study was undertaken to determine the significant operation and maintenance (O and M) considerations that bear directly on the day in\\/day out air-pollution-compliance status of municipal-waste combustors (MWC's). Two independent tasks were performed to compile and document these O and M considerations. First, seven MWC sites were visited to interview equipment operators and management personnel to determine the nature

1987-01-01

253

Evaluation of the nuclear-power-plant operator-licensing examination. Final report  

SciTech Connect

The field work included interviews with operator licensing examiners, utility trainers, candidates, and plant management; interviews and discussions with professional; content analysis of the written portion of 24 control room operator examinations; observation of the conduct of examinations in plants; analysis of data obtained from NRC; and literature searches and reviews. The report includes chapters containing findings from a content analysis of 24 examinations, technical discussions of the concepts of validity and reliability, and the application of these concepts to the control room operator examination. Other chapters discuss the need to develop operator performance measures and the problems associated with this need including problems of influence of performance-shaping factors on control room operator performance. The last half of the report focuses on what could and should be done in the future. The report argues that any new examination must be based on a task analysis, most probably the INPO task analysis. It is also argued that attempts should be made to incorporate methods for measuring operators' problem solving ability in ill-defined situations. Further, it is pointed out that the NRC needs to clarify whether the licensing examination is to be a test of minimal competence or a mastery test, whether the examination system is to also serve the selection function, and whether separate licensing tests are needed for RO's and SRO's. The last chapter presents a model for a new licensing process.

Fullerton, A.M.; Peelle, E.; Reed, J.H.; Morrison, G.W.; Liebowitz, S.J.

1983-10-01

254

Operation and maintenance of hospital medical-waste incinerators. Final report  

SciTech Connect

This document identifies the operation and maintenance (O M) procedures that should be practiced on hospital medical-waste incinerators and associated air pollution control equipment to minimize air emissions. Proper O M, in addition to reducing air emissions, improves equipment reliability and performance, prolongs equipment life, and helps to ensure proper ash burnout. The document provides general guidance on proper O M procedures with the intention of identifying good operating practices. The document is intended as a technical guide for use by federal, state, and local agency personnel, hospital waste management personnel, and hospital-incinerator operators. The document presents background information on hospital medical-waste incineration systems including a summary of combustion principles and descriptions of the types of incinerators typically used for hospital medical wastes. Background information on add-on air pollution-control systems is presented. Key operating parameters and good operating practices for the incineration and air pollution systems are identified and discussed. General guidance on maintenance of the systems is provided.

Neulicht, R.M.; Turner, M.B.; Chaput, L.S.; Wallace, D.D.; Smith, S.G.

1989-03-01

255

Topic in Depth - Precision Machining  

NSDL National Science Digital Library

As technology advances and devices become smaller and more complex, the need for precision manufacturing processes is becoming increasingly important. A number of innovative techniques for precision machining have been developed to enable the construction and operation of such contrivances.

2010-09-06

256

Surface Integrity of Electrochemical Machining.  

National Technical Information Service (NTIS)

The report describes the general range of effects of electrochemical machining (ECM) on aerospace materials. The general effects from both 'standard' or 'off-standard' operating conditions are depicted. The effect on material properties includes a review ...

G. Bellows

1969-01-01

257

Public-transportation alternative fuels: A perspective for small transportation operations. final report  

SciTech Connect

The purpose of the study is to provide small, public transportation operators in the State of California with information necessary to evaluate alternative fuels and technologies for complying with future State and Federal emission regulations. The alternative fuels examined include 'clean diesel' fuel, methanol, natural gas (both compressed and liquefied), ethanol and liquefied petroleum gas (LPG). These fuels are examined across a variety of criteria including fuel availability and costs, vehicle reliability, durability, safety, fuel economy and emission characteristics. The equipment and facilities needed for refueling alternative technology buses are also examined along with modifications needed to maintenance garages to ensure safe operations with these new fuels. All capital and operating costs associated with implementing each of the alternative fuels are detailed for different size transit properties. Advanced electric propulsion technologies including batteries, hydrogen fuel cells, and electric trolley buses are also briefly examined but in less detail than the other alternative fuels.

Not Available

1992-06-30

258

Public transportation alternative fuels: A perspective for small transportation operations. Executive Summary. Final report  

SciTech Connect

The purpose of the study is to provide small, public transportation operators in the State of California with information necessary to evaluate alternative fuels and technologies for complying with future State and Federal emission regulations. The alternative fuels examined include 'clean diesel' fuel, methanol, natural gas (both compressed and liquefied), ethanol and liquefied petroleum gas (LPG). These fuels are examined across a variety of criteria including fuel availability and costs, vehicle reliability, durability, safety, fuel economy and emission characteristics. The equipment and facilities needed for refueling alternative technology buses are also examined along with modifications needed to maintenance garages to ensure safe operations with these new fuels. All capital and operating costs associated with implementing each of the alternative fuels are detailed for different size transit properties. Advanced electric propulsion technologies including batteries, hydrogen fuel cells, and electric trolley buses are also briefly examined but in less detail than the other alternative fuels.

Not Available

1992-06-30

259

Waste Isolation Pilot Plant Title I operator dose calculations. Final report, LATA report No. 90  

SciTech Connect

The radiation exposure dose was estimated for the Waste Isolation Pilot Plant (WIPP) operating personnel who do the unloading and transporting of the transuranic contact-handled waste. Estimates of the radiation source terms for typical TRU contact-handled waste were based on known composition and properties of the waste. The operations sequence for waste movement and storage in the repository was based upon the WIPP Title I data package. Previous calculations had been based on Conceptual Design Report data. A time and motion sequence was developed for personnel performing the waste handling operations both above and below ground. Radiation exposure calculations were then performed in several fixed geometries and folded with the time and motion studies for individual workers in order to determine worker exposure on an annual basis.

Hughes, P.S.; Rigdon, L.D.

1980-02-01

260

Analyses of operational times and technical aspects of the Salton Sea scientific drilling project: (Final report)  

SciTech Connect

The Deep Salton Sea Scientific Drilling Program (DSSSDP) was conducted in Imperial County of California at the Southeastern edge of the Salton Sea. Emphasis was on the acquisition of scientific data for the evaluation of the geological environment encountered during the drilling of the well. The scientific data acquisition activities consisted of coring, running of numerous downhole logs and tools in support of defining the geologic environment and conducting two full scale flow tests primarily to obtain pristine fluid samples. In addition, drill cuttings, gases and drilling fluid chemistry measurements were obtained from the drilling fluid returns concurrent with drilling and coring operations. The well was drilled to 10,564 feet. This report describes the field portions of the project and presents an analysis of the time spent on the various activities associated with the normal drilling operations, scientific data gathering operations and the three major downhole problem activities - lost circulation, directional control and fishing.

Not Available

1986-12-01

261

Chemical warfare: Implications for Operation Desert Storm and beyond. Final report  

SciTech Connect

This paper presents the potential for use of lethal and incapacitating chemical agents in the Persian Gulf. Insight from past chemical warfare case studies, current international law, and U.S. and Soviet policy, strategy and tactics provide a basis for examination of Iraq's chemical warfare potential and operational strategy. In addition, a survey of Naval War College students assesses the current U.S. Armed Forces level of chemical warfare readiness. This analysis combined with the U.S. experience and current war with Iraq as well as proposing a more viable operational capability to meet stated national policy in response to chemical weapons.

Trummer, F.G.; Twining, B.L.

1991-02-11

262

Culture Machine  

NSDL National Science Digital Library

Culture Machine is a new, refereed, electronic journal encompassing cultural studies and cultural theory. The international editorial board of the interactive journal aims to "generat[e] research in culture and theory" by promoting and publishing "the most provocative of new work." The theme of the inaugural issue is Taking Risks with the Future. Content includes articles such as Life After Death of the Text by Johan Fornas, Cultural Studies in the Clouds: Mourning for Detail by Tadeusz Slawek, and The Future States of Politics by Kenneth Surin. Culture Machine is hosted by the University of Teesside, England.

263

Environmental assessment for device assembly facility operations, Nevada Test Site, Nye County, Nevada. Final report  

SciTech Connect

The U.S. Department of Energy, Nevada Operations Office (DOE/NV), has prepared an environmental assessment (EA), (DOE/EA-0971), to evaluate the impacts of consolidating all nuclear explosive operations at the newly constructed Device Assembly Facility (DAF) in Area 6 of the Nevada Test Site. These operations generally include assembly, disassembly or modification, staging, transportation, testing, maintenance, repair, retrofit, and surveillance. Such operations have previously been conducted at the Nevada Test Site in older facilities located in Area 27. The DAF will provide enhanced capabilities in a state-of-the-art facility for the safe, secure, and efficient handling of high explosives in combination with special nuclear materials (plutonium and highly enriched uranium). Based on the information and analyses in the EA, DOE has determined that the proposed action would not constitute a major federal action significantly affecting the quality of the human environment within the meaning of the National Environmental Policy Act of 1969 (42 U.S.C. 4321 et seq.). Therefore, an environmental impact statement is not required, and DOE is issuing this finding of no significant impact.

NONE

1995-05-01

264

Evaluation of the central heating plant operation at Malmstrom Air Force Base, MT. Final report  

Microsoft Academic Search

In 1983, a new coal-fired central heating plant was built for Malmstrom Air Force Base (MAFB), MT, to replace the existing poorly operating system and provide for increased heating requirements. Although the generators had been fired intermittently with coal, an unofficial test in March 1986 failed due to plugging in the convective section. To determine the cause of the plugging,

M. J. Savoie; J. Davidson; J. Northrup; T. Ask; C. Schmidt

1995-01-01

265

Final report on evaluation of cyclocraft support of oil and gas operations in wetland areas  

Microsoft Academic Search

The cyclocraft is a proven hybrid aircraft, capable of VTOL, lifting heavy and bulky loads, highly controllable, having high safety characteristics and low operating costs. Mission Research Corporation (MRC), under Department of Energy sponsorship, is evaluating the potential use of cyclocraft in the transport of drill rigs, mud, pipes and other materials and equipment, in a cost effective and environmentally

W. J. Eggington; P. M. Stevens; C. J. John; B. J. Harder; D. M. Lindstedt

1994-01-01

266

Chemical Operations Technology Curriculum Development Project. PY95 Final Detailed Report.  

ERIC Educational Resources Information Center

A model curriculum for an associate of applied science degree in chemical operations technology (COT) was developed at Texas State Technical College in Marshall, Texas. First, a comprehensive analysis of the local and statewide labor market demand for trained personnel in the advanced field of COT was conducted. Next, a comprehensive task analysis…

Texas State Technical Coll., Marshall.

267

Reduced gas pressure operation of sludge digesters: Expanded studies. Final report  

SciTech Connect

Previous investigations strongly suggested that the municipal anaerobic sludge digestion process could be enhanced by reactor operation with subatmospheric headspace pressures. Enhanced solids destruction and methane production along with increased process stability were observed in these earlier studies. However, due to the small scale of the anaerobic reactors used ( {approx}1.5 L), definitive steady-state measurements could not be obtained. These expanded studies were undertaken to verify and define the magnitude of the benefits that might be obtained with vacuum operation of sludge digesters. Four reactors ({approx}15.0 L) were fed municipal sludge at three different organic loading rates while being maintained with a 15-day solids retention time. One reactor had a constant headspace pressure of 1.02 atm; a second was maintained at 0.75 atm; and the remaining two reactors were operated for the majority of the day at 1.02 atm, and for part of the day with a 0.75 atm headspace pressure. Additional small-scale, batch experiments were performed to help identify controlling digestion mechanisms. The results of these expanded studies indicate that vacuum operation did not yield significant advantages over the organic loading range investigated (0.088 to 0.352 lb VSS/ft{sup 3}{center_dot}d).

Not Available

1993-09-01

268

Energy Recovery from Textile Dryer Operations. Phase I Final Report, June 1980-June 1981.  

National Technical Information Service (NTIS)

The technical and economic feasibility of implementing a two-step approach for improving use of natural gas in textile dryer operations is presented. The first step involves automatic control of the dryer dampers to minimize the flow of exhaust heat witho...

F. J. McCrosson J. D. Jenkins P. W. Yngve

1981-01-01

269

The Feasibility of Generalized Acoustic Sensor Operator Training. Final Report for Period February 1974-February 1975.  

ERIC Educational Resources Information Center

The feasibility of generalized approaches to training military personnel in the use of different types of sonar/acoustic warfare systems was explored. The initial phase of the project consisted of the analysis of representative sonar and acoustic equipment to identify training areas and operator performance requirements that could be subjected to…

Daniels, Richard W.; Alden, David G.

270

Definition and Evaluation of Bus and Truck Automation Operations Concepts: Final Report  

Microsoft Academic Search

Traffic congestion will continue to worsen and likely worsen at a faster rate than ever. People throughput and freight throughput have become critical issues for California and the rest of the nation. PATH has funded a research project entitled Definition And Evaluation of Bus And Truck Automation Operations Concepts, proposed by the authors. This report summarizes the major findings of

H. S. Jacob Taso; Jan L. Botha

2003-01-01

271

Final Report for Organic Partitioning Resulting from Operation of an INTEC Double-needle Sampler  

SciTech Connect

The double needle sampler testing is a continuation of previous test series that investigated the fate of organic species in the Process Equipment Waste Evaporator (PEWE) system at the Idaho Nuclear Technology and Engineering Center (INTEC). This test series was designed to investigate the effects of operation of the double needle sampling systems on volatile organic constituents in an acidic feed matrix.

Michael B. Heiser

2003-09-01

272

EVALUATION OF AN INDIVIDUALLY PACED COURSE FOR AIRBORNE RADIO CODE OPERATORS. FINAL REPORT.  

ERIC Educational Resources Information Center

IN THIS STUDY COMPARISONS WERE MADE BETWEEN AN INDIVIDUALLY PACED VERSION OF THE AIRBORNE RADIO CODE OPERATOR (ARCO) COURSE AND TWO VERSIONS OF THE COURSE IN WHICH THE STUDENTS PROGRESSED AT A FIXED PACE. THE ARCO COURSE IS A CLASS C SCHOOL IN WHICH THE STUDENT LEARNS TO SEND AND RECEIVE MILITARY MESSAGES USING THE INTERNATIONAL MORSE CODE. THE…

BALDWIN, ROBERT O.; JOHNSON, KIRK A.

273

Quiet operating I.C. engine with complete highly efficient expansion cycle. Final technical report.  

National Technical Information Service (NTIS)

A program for the development of a quiet operating internal combustion engine with complete highly efficient expansion cycle was administered by the Department of Energy on June 14, 1988 through December 13, 1989. An extension, modification M001 to the co...

1991-01-01

274

Operation and maintenance of hospital medical-waste incinerators. Final report  

Microsoft Academic Search

This document identifies the operation and maintenance (O M) procedures that should be practiced on hospital medical-waste incinerators and associated air pollution control equipment to minimize air emissions. Proper O M, in addition to reducing air emissions, improves equipment reliability and performance, prolongs equipment life, and helps to ensure proper ash burnout. The document provides general guidance on proper O

R. M. Neulicht; M. B. Turner; L. S. Chaput; D. D. Wallace; S. G. Smith

1989-01-01

275

An Operational Blueprint for Health Career Education and Training Program. Final Report.  

ERIC Educational Resources Information Center

An operational blueprint for health career education and training was designed to provide the District of Columbia public schools with a documented strategy for implementing a comprehensive, multifocal health careers program. The blueprint will establish a mechanism for interagency communication and cooperation at all levels, involving all aspects…

Hood, Theresa W.; Thompson, Christopher W.

276

Flight Simulator: Use of SpaceGraph Display in an Instructor/Operator Station. Final Report.  

ERIC Educational Resources Information Center

This report describes SpaceGraph, a new computer-driven display technology capable of showing space-filling images, i.e., true three dimensional displays, and discusses the advantages of this technology over flat displays for use with the instructor/operator station (IOS) of a flight simulator. Ideas resulting from 17 brainstorming sessions with…

Sher, Lawrence D.

277

Operation of a telemetered seismic network on the Alaska Peninsula. Final report  

SciTech Connect

The purpose was the installation and operation of a seismic network to provide data for the investigation into the seismotectonics of the eastern portion of the Alaska-Aleutian arc. This paper gives an overview of the program and presents an earthquake catalogue and results of studies based on the network. (ACR)

Not Available

1983-07-01

278

Organization and Operation of Kentucky's Vocational Education Learning Centers. Final Report.  

ERIC Educational Resources Information Center

A project was undertaken to develop a model for organizing and operating learning centers in secondary and postsecondary vocational schools as well as in community colleges in Kentucky. During the first year of the project models were developed for learning centers at both instructional levels. Stressed in each model was the use of key elements of…

Omvig, Clayton P.; Tulloch, Charlotte

279

Final Report on the Operation of the Experimental Electrospray Source for Nanoparticles.  

National Technical Information Service (NTIS)

This report contains all of the academic reports made on the testing and operation of an electrospray apparatus designed to spray nanoparticles out of solution and introduce them into a vacuum environment for deposition in solid rare-gas matrices. Researc...

A. Malcolm

2009-01-01

280

Motor Vehicle Operator Fuel-Conservation Feedback Device. Final Technical Report.  

National Technical Information Service (NTIS)

A summary is given of the work performed to evaluate a number of existing fuel and vacuum monitoring devices from a technical and human factors viewpoint; the experimental analysis of the device presentation from the operator (user) standpoint both on the...

C. Fazio C. Hartley F. O'Neil R. Cooksey

1982-01-01

281

Brown coal preparation machines  

SciTech Connect

Lignite usually requires comminuting and screening before being used as a fuel in power plants. Reduction machines normally used for coarse crushing bituminous coal, such as jaw crushers, roll crushers, and impact crushers, are not generally suitable for lignite as they require a brittle feed and large grain size. In contrast to these requirements, lignite can be easily compressed and has a small grain size. Therefore, special crusher types have been developed for the coarse reduction of lignite. These machines resemble roll crushers but subject the feed to shearing and tearing forces rather than to compressive stress. It is often necessary to screen the lignite to remove the undersize or to limit the maximum particle size before the next comminution process. Screening the lignite is a particularly difficult operation due to the high water content and the presence of clay minerals which tend to clog the screening machines. These problems can be overcome with multi-roll sizers.

Bleckmann, H.; Sitte, W.; Kellerwessel, H.

1981-05-01

282

Columbia River System Operation Review : Final Environmental Impact Statement, Appendix D: Exhibits.  

SciTech Connect

The Columbia River and its tributaries are the primary water system in the Pacific Northwest, draining some 219,000 square miles in seven states and another 39,500 square miles in British Columbia. Beginning in the 1930`s, the Columbia River has been significantly modified by construction of 30 major dams on the river and its tributaries, along with dozens of non-Federal projects. Construction and subsequent operation of these water development projects have contributed to eight primary uses of the river system, including navigation, flood control, irrigation, electric power generation, fish migration, fish and wildlife habitat, recreation, and water supply and quality considerations. Increasing stress on the water development of the Columbia River and its tributaries has led primary Federal agencies to undertake intensive analysis and evaluation of the operation of these projects. These agencies are the U.S. Army Corps of Engineers and the Bureau of Reclamation, who operate the large Federal dams on the river, and the Bonneville Power Administration who sells the power generated at the dams. This review, termed the System Operation Review (SOR), has as its ultimate goal to define a strategy for future operation of the major Columbia River projects which effectively considers the needs of all river uses. This volume, Appendix D: Cultural resources appendix, Technical imput includes the following: Development of geomorphology based framework for cultural resources management, Dworshak Reservoir, Idaho; Impact profiles for SOR reservoirs; comments from the following Native American tribes: Burns Paiute Tribe; Coville Confederated Tribes; Confederated Tribes of the Warm Springs Indian Reservation; Confederated Tribes and bands of the Yakama Indian Nation (comments); Nez Perce Tribe; Coeur D`Alene Tribe; Spokane Tribe of Indians; The confederated Tribes of the Umatilla Indian Reservation.

Columbia River System Operation Review (U.S.)

1995-11-01

283

An Overview on Portable Human Machine Interfaces (HMI) for Teleoperation Control of Robotic Swarms  

Microsoft Academic Search

The paper contains an overview and an analysis of the interaction problems between humans and robots applied to the exploration of ground areas. An analysis of factors affecting the efficiency of the interaction is presented with an overview of the design principles of an Operator Control Unit (OCU). Finally, future pathways are suggested for the research on advanced human-machine interfaces.

Paolo Villella; Carlo Alberto Avizzano; Massimo Bergamasco

284

Electronic Fault Recording: A corporate memory for maintenance support of complex machines  

Microsoft Academic Search

The ESB system for electronic fault recording realizes a corporate memory which structures, preserves, and disseminates the experiences made during the maintenance of a complex machine for black coal mining. Model-based recording and knowledge evolution by systematic revision are key concepts of the approach. A first implementation is already operational. The final deployment of the system shall result in significant

Ansgar Bernardi

1997-01-01

285

Estimation of coordinate measuring machine error parameters  

Microsoft Academic Search

Positioning accuracies of computer controlled machines such as robots, CNC machines and coordinate measuring machines (CMMs) are of great importance to their operations. An estimation concept for quantifying the error parameters based on error indications from ball-bar testing is described. A preliminary simulation study was performed, and it has been concluded that the concept is feasible and is worth further

J. Chen; Y. F. Chen

1987-01-01

286

Stability Analysis of a Symmetrical Induction Machine  

Microsoft Academic Search

A stability study of an induction machine is performed by applying the root-locus criterion to the equations which describe the behavior of the machine during small displacements about a steady-state operating point. This investigation reveals that a symmetrical induction machine may become unstable at low speeds (low frequencies) even though balanced, constant amplitude, sinusoidal voltages are applied to the stator

ROBERT H. NELSON; THOMAS A. LIPO; PAUL C. KRAUSE

1969-01-01

287

Practical Feature Subset Selection for Machine Learning  

Microsoft Academic Search

Machine learning algorithms automatically extract knowledge from machine readable information. Unfortunately, their success is usually dependant on the quality of the data that they operate on. If the data is inadequate, or contains extraneous and irrelevant information, machine learning algorithms may produce less accurate and less understandable results, or may fail to discover anything of use at all. Feature subset

Mark A. Hall; Lloyd A. Smith

1996-01-01

288

FINAL REPORT: Reduction in Energy Consumption and Variability in Steel Foundry Operations  

SciTech Connect

This project worked to improve the efficiency of the steel casting industry by reducing the variability that occurs because of process and product variation. The project focused on the post shakeout operations since roughly half of the production costs are in this area. These improvements will reduce the amount of variability, making it easier to manage the operation and improve the competitiveness. The reduction in variability will also reduce the need for many rework operations, which will result in a direct reduction of energy usage, particularly by the reduction of repeated heat treatment operations. Further energy savings will be realized from the reduction of scrap and reduced handling. Field studies were conducted at ten steel foundries that represented the U.S. steel casting industry, for a total of over 100 weeks of production observation. These studies quantified the amount of variability, and looked toward determining the source. A focus of the data collected was the grinding operations since this is a major effort in the cleaning room, and it represents the overall casting quality. The grinding was divided into two categories, expected and unexpected. Expected grinding is that in which the location of the effort is known prior to making the casting, such as smoothing parting lines, gates, and riser contacts. Unexpected grinding, which was approximately 80% of the effort, was done to improve the surfaces at weld repair locations, to rectify burnt on sand, and other surface anomalies at random locations. Unexpected grinding represents about 80% of the grinding effort. By quantifying this effort, the project raised awareness within the industry and the industry is continuing to make improvements. The field studies showed that the amount of variation of grinding operations (normalized because of the diverse set of parts studied) was very consistent across the industry. The field studies identified several specific sources that individually contributed to large process variation. This indicates the need for ongoing monitoring of the process and system to quantify the effort being expended. A system to measure the grinding effort was investigated but did not prove to be successful. A weld wire counting system was shown to be very successful in tracking casting quality by monitoring the quantity of weld wire being expended on a per casting basis. Further use of such systems is highly recommended. The field studies showed that the visual inspection process for the casting surface was a potentially large source of process variation. Measurement system analysis studies were conducted at three steel casting producers. The tests measured the consistency of the inspectors in identifying the same surface anomalies. The repeatability (variation of the same operator inspecting the same casting) was found to be relatively consistent across the companies at about 60-70%. However, this is still are very large amount of variation. Reproducibility (variation of different operators inspecting the same casting) was worse, ranging between 20 to 80% at the three locations. This large amount of variation shows that there is a great opportunity for improvement. Falsely identifying anomalies for reworking will cause increased expense and energy consumption. This is particularly true if a weld repair and repeated heat treatment is required. However, not identifying an anomaly could also result in future rework processing, a customer return, or scrap. To help alleviate this problem, casting surface comparator plates were developed and distributed to the industry. These plates are very inexpensive which enables them to be provided to all those involved with casting surface quality, such as operators, inspectors, sales, and management.

F. Peters

2005-05-24

289

Extreme ultraviolet lithography machine  

DOEpatents

An extreme ultraviolet lithography (EUVL) machine or system for producing integrated circuit (IC) components, such as transistors, formed on a substrate. The EUVL machine utilizes a laser plasma point source directed via an optical arrangement onto a mask or reticle which is reflected by a multiple mirror system onto the substrate or target. The EUVL machine operates in the 10-14 nm wavelength soft x-ray photon. Basically the EUV machine includes an evacuated source chamber, an evacuated main or project chamber interconnected by a transport tube arrangement, wherein a laser beam is directed into a plasma generator which produces an illumination beam which is directed by optics from the source chamber through the connecting tube, into the projection chamber, and onto the reticle or mask, from which a patterned beam is reflected by optics in a projection optics (PO) box mounted in the main or projection chamber onto the substrate. In one embodiment of a EUVL machine, nine optical components are utilized, with four of the optical components located in the PO box. The main or projection chamber includes vibration isolators for the PO box and a vibration isolator mounting for the substrate, with the main or projection chamber being mounted on a support structure and being isolated.

Tichenor, Daniel A. (Castro Valley, CA); Kubiak, Glenn D. (Livermore, CA); Haney, Steven J. (Tracy, CA); Sweeney, Donald W. (San Ramon, CA)

2000-01-01

290

Transferable methods identified during the monitoring of the DOE Chicago Operations Office Weatherization Assistance Program. Final report. Task F  

SciTech Connect

This report provides the outcomes of the analyses performed under this task. The first of these is the presentation of a range of materials/approaches initially found by contract monitoring teams to be potentially unique/innovative/useful to Weatherization Program operators. The second is a summary of the general categories of information eventually selected as having good transfer potential. The third is a listing of areas of information currently needed by grantees. The final step is a matching of useful information to needs cited by grantees.

Not Available

1983-05-01

291

Capital and operating costs for industrial boilers. Final report Apr-Jun 79  

Microsoft Academic Search

The report provides estimates of capital and operating costs for industrial boilers. Costs are related to the type of fuel fired, firing design and rated capacity. Both package and field-erected boilers are evaluated. Fuels considered include coal, residual oil, distillate oil and natural gas. Firing designs for coal include underfeed-stoker, spreader-stoker and pulverized. Rated capacities range from 15(10 to the

L. L. Gibbs; J. P. AbrahaM; N. D. Noe; D. S. Forste; H. T. Kimball

1979-01-01

292

Biocide usage and ash-handling practices at selected operating steam electric plants. Final report  

Microsoft Academic Search

The objective of the project was to expand the Atomic Industrial Forum (AIF) POWER data base to include subsets containing state-of-the-practive information on biocide usage and ash handling systems at steam-electric generating plants in the United States. The work by AIF involved obtaining documents and data on all operating or planned units, confirming the data, and building specific POWER data

Bergesen

1981-01-01

293

Noise assessment of the rocket sled test track operation at Jolloman AFB, New Mexico. Final report  

Microsoft Academic Search

This report presents the results of noise data measurements of the Holloman AFB rocket-sled test-track operations. Impulse and community noise measurements were made to determine the impact of the rocket-sled noise on the surrounding community. A worst case sled run was measured and used to determine that the rocket sled has very little impact on the community for a worst-case

Shaffer

1988-01-01

294

Geological and operational summary, North Aleutian Shelf Coast No. 1 well, Bering Sea, Alaska. Final report  

SciTech Connect

Discusses the first continental offshore stratigraphic test well drilled in the North Aleutian Basin Planning Area, Bering Sea, Alaska. The well was drilled to determine the hydrocarbon potential of the area. The report covers drilling operations; lithology and core data; velocity analysis; geologic setting and tectonic framework; seismic stratigraphy; well-log interpretation and lithostratigraphy; paleontology and biostratigraphy; geothermal gradient; organic geochemistry; abnormal formation pressure; geologic hazards and shallow geology; and environmental considerations.

Turner, R.F.

1988-11-01

295

Operational Readiness Review Final Report For F-Canyon Restart. Phase 1  

SciTech Connect

An independent WSRC Operational Readiness Review was performed for the restart of Phase 1 processing in F-Canyon, Building 221-F. Readiness to restart the Second Plutonium Cycle process and solvent recovery was assessed. The ORR was conducted by an ORR board of ten members with the support of a subject matter expert. The chairman and four members were drawn from the Operational Safety Evaluation Department, ESH& QA Division; additional members were drawn from other WSRC divisions, independent of the F-Canyon operating division (NMPD). Based on the results of the readiness verification assessments performed according to the ORR plan and the validation of pre-restart corrective actions, the WSRC independent ORR Board has concluded that the facility has achieved the state of readiness committed to in the Restart Plan. Also, based on the scope of the ORR, it is the opinion of the board that F-Canyon Phase 1 processes can be restarted without undue risk to the safety of the public and onsite workers and without undue risk to the environment.

McFarlane, A.F.; Spangler, J.B.

1995-04-05

296

Final Report on the Operation and Maintenance Improvement Program for Concentrating Solar Power Plants  

SciTech Connect

This report describes the results of a six-year, $6.3 million project to reduce operation and maintenance (O&M) costs at power plants employing concentrating solar power (CSP) technology. Sandia National Laboratories teamed with KJC Operating Company to implement the O&M Improvement Program. O&M technologies developed during the course of the program were demonstrated at the 150-MW Kramer Junction solar power park located in Boron, California. Improvements were made in the following areas: (a) efficiency of solar energy collection, (b) O&M information management, (c) reliability of solar field flow loop hardware, (d) plant operating strategy, and (e) cost reduction associated with environmental issues. A 37% reduction in annual O&M costs was achieved. Based on the lessons learned, an optimum solar- field O&M plan for future CSP plants is presented. Parabolic trough solar technology is employed at Kramer Junction. However, many of the O&M improvements described in the report are also applicable to CSP plants based on solar power tower or dish/engine concepts.

Cohen Gilbert E.; Kearney, David W.; Kolb, Gregory J.

1999-06-01

297

Wacky Machines  

ERIC Educational Resources Information Center

Collectors everywhere know that local antique shops and flea markets are treasure troves just waiting to be plundered. Science teachers might take a hint from these hobbyists, for the next community yard sale might be a repository of old, quirky items that are just the things to get students thinking about simple machines. By introducing some…

Fendrich, Jean

2002-01-01

298

Simple Machines  

NSDL National Science Digital Library

A webquest about simple machines Please open microsoft word and re-type or copy and paste each question and then type your answer. Be sure to include your name at the top of the page!!! . . Follow the link below and click on the Start button. Go to either the house or the tool shed and go ...

Mr.rebello

2008-11-24

299

XML Machines  

NASA Astrophysics Data System (ADS)

In order to capture the dynamics of XML databases a general model of tree-based database transformations is required. In this paper such an abstract computational model is presented, which brings together ideas from Abstract State Machines and monadic second-order logic. The model captures all XML database transformations.

Wang, Qing; Ferrarotti, Flavio A.

300

Function Machine  

NSDL National Science Digital Library

This Java applet allows learners to explore simple linear functions. Students determine the algebraic form of a linear equation by entering inputs into the machine and by looking for patterns in the outputs. The function rules available are: integers from -10 to 10 are either added to, subtracted from, or multiplied by the input x to yield the output y.

2011-01-01

301

Using flower pollinating with artificial bees (FPAB) technique to determine machinable volumes in process planning for prismatic parts  

Microsoft Academic Search

Process planning (PP) has an important role in manufacturing systems design and operations. Volume decomposition and machinable\\u000a volumes (MVs) or machining features determination is the core activity in process planning. This process requires extraction\\u000a of elementary volumes (EVs), merging or clustering EVs to construct feasible MVs and finally selecting an optimal combination\\u000a of MVs. Development of MVs is an important

Mahmoud Houshmand; Din Mohammad Imani; S. T. A. Niaki

2009-01-01

302

Characterization of the performance of adiabatic reformers operated with logistic fuels. Final technical report  

SciTech Connect

United Technologies Corporation, in cooperation with the Electric Power Research Institute, has developed an adiabatic steam reformer capable of processing sulfur-containing fuels for commercial fuel cell power plants. No. 2 fuel oil and various coal-derived liquids have recently been successfully reformed to hydrogen using advanced catalyst formulations. The objective of this program is to determine the performance of the adiabatic reformer when operated with military logistic fuels. The test data will form the basis for system evaluation of the use of the adiabatic reformer in Army 'SLEEP' power plants using military logistic fuels. A two-inch diameter adiabatic reformer capable of supplying the hydrogen required for a 2.5 kW to 6 kW power plant was loaded with advanced metal oxide and nickel catalysts. It ran over 1400 hours; 840 hours with No. 2 fuel oil as reference fuel, 350 hours on unleaded gasoline, and 216 hours on diesel fuel. The performance of the reformer on No. 2 fuel oil (for calibration against previous tests) closely matched previous tests both with respect to fuel conversion and carbon formation characteristics. After an initial decay period of about 200 hours, the performance remained stable for the remaining 1200 hours of test. The reformer operated at conditions set as design goals for a commercial fuel cell power plant. With unleaded gasoline, the tendency for carbon formation was greatly reduced; even at the lowest values for oxygen to carbon ratio in the process steam no carbon was detected. Operating parameters were defined for each of the fuels. The effect of steam/carbon ratio, pressure and fuel flow rate on fuel conversion was determined.

Bett, J.A.S.; Lesieur, R.R.; Meyer, A.P.; Setzer, H.J.

1981-07-30

303

Extended life operation of light water reactors: economic and technological review. Final report  

SciTech Connect

This volume of Appendixes presents studies performed in the conduct of an evaluation of the extended life operation of light water reactors. A summary of this project is presented in Volume 1 of this report series. This appendix section includes the development of a basic economic model for evaluating the extended life option and technical assessments of the major replacement and refurbishment options that may be required. These data should serve as a valuable source file for those concerned with extended life and decommissioning options.

Negin, C.A.; Walker, R.S.; Shantzis, S.B.; Worku, G.

1982-06-01

304

Operation of a radio-controlled car by voice commands  

Microsoft Academic Search

The objective of this research is to operate a radio-controlled car (RC car) by using Thai voice commands. The research was conducted by sending a user's voice commands to a computer machine, and then the computer converted the voice commands into digital signal. After that, the digital signal was converted into a radio wave commands. Finally, an RC car operated

Parichart Leechor; Chomtip Pornpanomchai; Phichate Sukklay

2010-01-01

305

Coal-liquid fuel/diesel engine operating compatibility. Final report  

SciTech Connect

This work is intended to assess the possibilities of using coal-derived liquids (CDL) represented by a specific type (SRC II) and shale-derived distillate fuel in blends of petroleum-derived fuels in medium-speed, high-output, heavy-duty diesel engines. Conclusions are as follows: (1) Blends of solvent refined coal and diesel fuel may be handled safely by experienced diesel engine mechanics. (2) A serious corrosion problem was found in the fuel pump parts when operating with solvent refined coal blended with petroleum. It is expected that a metallurgy change can overcome this problem. (3) Proper selection of materials for the fuel system is required to permit handling coal-derived liquid fuels. (4) A medium speed, high horsepower, 4-cycle diesel engine can be operated on blends of solvent refined coal and petroleum without serious consequences save the fuel system corrosion previously mentioned. This is based on a single, short durability test. (5) As represented by the product evaluated, 100% shale-derived distillate fuel may be used in a medium speed, high horsepower, 4-cycle diesel engine without significant consequences. (6) The shale product evaluated may be blended with petroleum distillate or petroleum residual materials and used as a fuel for medium speed, high horsepower, 4-cycle diesel engines. 7 references, 24 figures, 20 tables.

Hoffman, J.G.; Martin, F.W.

1983-09-01

306

Development of an operational tool for biomonitoring using constant pressure respirometry. [Final report  

SciTech Connect

The United States Environmental Protection Agency (US EPA) policy statement (FR 49, 9016, 9 March 1984) for the development of water quality based permit limitations includes toxicity testing of effluents as an important part of a water quality approach to controlling toxics (Pickering, 1988). To assure that state waters are free of toxics, both chemical and biological methods were recommended for assessing effluent quality. The US EPA validated bioassay procedures for toxicity testing of wastewater discharges use three distinctive organisms groups: vertebrates, invertebrates, and algae (Weber, 1989). The specific species for these three groups are fathead minnow, Pimephales promelas; water tea, Ceriodaphnia, dubia; and the green algae, Selenastrum capricornum, respectively. Definitive testing estimates the concentration atwhich a certain percentage of organisms exhibit a certain response. The definitive test exposes several replicate groups of organisms to the target substrate for a predetermined time period effluent concentration. The overall goal of this study is to develop an acceptable protocol for operational biomonitoring based on constant pressure respirometry for LANL. The specific objectives include: Development an appropriate toxicity testing protocol based on constant pressure respirometry for whole effluent toxicity testing, and evaluate the protocol based on factors such as sensitivity, response time, cost of analysis, and simplicity of operation.

Zachritz, W.H. II; Morrow, J. [New Mexico State Univ., Las Cruces, NM (United States)

1992-06-29

307

Field Operations Program Chevrolet S-10 (Lead-Acid) Accelerated Reliability Testing - Final Report  

SciTech Connect

This report summarizes the Accelerated Reliability testing of five lead-acid battery-equipped Chevrolet S-10 electric vehicles by the US Department of Energy's Field Operations Program and the Program's testing partners, Electric Transportation Applications (ETA) and Southern California Edison (SCE). ETA and SCE operated the S-10s with the goal of placing 25,000 miles on each vehicle within 1 year, providing an accelerated life-cycle analysis. The testing was performed according to established and published test procedures. The S-10s' average ranges were highest during summer months; changes in ambient temperature from night to day and from season-to-season impacted range by as much as 10 miles. Drivers also noted that excessive use of power during acceleration also had a dramatic effect on vehicle range. The spirited performance of the S-10s created a great temptation to inexperienced electric vehicle drivers to ''have a good time'' and to fully utilize the S-10's acceleration capability. The price of injudicious use of power is greatly reduced range and a long-term reduction in battery life. The range using full-power accelerations followed by rapid deceleration in city driving has been 20 miles or less.

J. Francfort (INEEL); J. Argueta; M. Wehrey (Southern California Edison); D. Karner; L. Tyree (Electric Transportation Applications)

1999-07-01

308

Machine tests slow-speed sliding friction in high vacuum  

NASA Technical Reports Server (NTRS)

Testing machine that operates without any lubrication of the machine elements within the vacuum chamber measures static friction and sliding friction at very low speeds. Moving parts are held to a minimum to simplify operation in the vacuum chamber.

Skyrus, J.; Wilkinson, C.

1967-01-01

309

Linked State Machines: Speed Independent Design. Volume 4.  

National Technical Information Service (NTIS)

Necessary and sufficient conditions are developed for the speed independent operation of a linked state machine (LSM) that consists of one elementary state machine (ESM). Sufficient conditions for the speed independent operation of an LSM that consists of...

H. K. Knudsen

1985-01-01

310

Integration of Machining and Inspection in Aerospace Manufacturing  

NASA Astrophysics Data System (ADS)

The main challenge for aerospace manufacturers today is to develop the ability to produce high-quality products on a consistent basis as quickly as possible and at the lowest-possible cost. At the same time, rising material prices are making the cost of scrap higher than ever so making it more important to minimise waste. Proper inspection and quality control methods are no longer a luxury; they are an essential part of every manufacturing operation that wants to grow and be successful. However, simply bolting on some quality control procedures to the existing manufacturing processes is not enough. Inspection must be fully-integrated with manufacturing for the investment to really produce significant improvements. The traditional relationship between manufacturing and inspection is that machining is completed first on the company's machine tools and the components are then transferred to dedicated inspection equipment to be approved or rejected. However, as machining techniques become more sophisticated, and as components become larger and more complex, there are a growing number of cases where closer integration is required to give the highest productivity and the biggest reductions in wastage. Instead of a simple linear progression from CAD to CAM to machining to inspection, a more complicated series of steps is needed, with extra data needed to fill any gaps in the information available at the various stages. These new processes can be grouped under the heading of "adaptive machining". The programming of most machining operations is based around knowing three things: the position of the workpiece on the machine, the starting shape of the material to be machined, and the final shape that needs to be achieved at the end of the operation. Adaptive machining techniques allow successful machining when at least one of those elements is unknown, by using in-process measurement to close the information gaps in the process chain. It also allows any errors to be spotted earlier in the manufacturing process, so helping the problems to be resolved more quickly and at lower cost.

Simpson, Bart; Dicken, Peter J.

2011-12-01

311

Improvement of reliability of welding by in-process sensing and control (development of smart welding machines for girth welding of pipes). Final report  

SciTech Connect

Closed-loop control of the welding variables represents a promising, cost-effective approach to improving weld quality and therefore reducing the total cost of producing welded structures. The ultimate goal is to place all significant weld variables under direct closed-loop control; this contrasts with preprogrammed machines which place the welding equipment under control. As the first step, an overall strategy has been formulated and an investigation of weld pool geometry control for gas tungsten arc process has been completed. The research activities were divided into the areas of arc phenomena, weld pool phenomena, sensing techniques and control activities.

Hardt, D.E.; Masubuchi, K.; Paynter, H.M.; Unkel, W.C.

1983-04-01

312

Evaluation of integrated communications and control technology for traffic operations. Final report  

SciTech Connect

For traffic surveillance and control systems to function, an effective communications subsystem is required to transmit data from detector sites to a control center and to return control instructions to motorist information on control equipment. The primary goal of this research is to evaluate the cost effectiveness, flexibility, adaptability, and suitability of various communications media for collecting and transmitting information from and to detection and control sites. The specific objectives are to (1) evaluate the integrated communications and control for traffic operations and incident response (2) evaluate the cost-effectiveness and trade-offs of potential communication technology such as fiber optics, coaxial cable, and microwave systems for traffic control, and (3) assess the effectiveness of communication technology that is used on freeway in application for local jurisdictions. The report provides information intended for use by planners, designers, and construction managers in making decisions with regards to communication in traffic management and control systems.

Layton, R.; Corcoran, J.

1998-09-01

313

Noise assessment of the rocket sled test track operation at Jolloman AFB, New Mexico. Final report  

SciTech Connect

This report presents the results of noise data measurements of the Holloman AFB rocket-sled test-track operations. Impulse and community noise measurements were made to determine the impact of the rocket-sled noise on the surrounding community. A worst case sled run was measured and used to determine that the rocket sled has very little impact on the community for a worst-case rocket-sled run and little or no impact for the majority of the runs. Recommendations were made to limit the number of people exposed to the rocket sled noise and require test-track personnel to wear hearing protection. Sonic-boom measurement equipment should be purchased to document all sonic booms created by the rocket sled.

Shaffer, W.J.

1988-10-01

314

Development of an onboard data acquisition system for recording vehicle operating characteristics and emissions. Final report  

SciTech Connect

The purpose of the study was to design, install and test an onboard data acquisition system in a 1991-model Chevrolet Lumina, to collect engine and vehicle operating data, including tailpipe pollutant concentrations. The system measures and records manifold air pressure, manifold air temperature, engine RPM, throttle position, and coolant temperature, all on a second-by second basis. Lateral and longitudinal acceleration and oxygen sensor voltage are measured at 10 hertz and averages are calculated and recorded at 1 hertz. Vehicle speed is measured at 1 hertz and can be differentiated and subtracted from longitudinal acceleration to estimate grade. Additional digital data are sampled and recorded to document gear changes or change in status of the `service engine soon` indicator. A portable gas analyzer is used to measure and record concentrations on hydrocarbons, carbon dioxide, carbon monoxide and oxygen in engine exhaust.

Di Genova, F.; Austin, T.; Tilden, J.; Lee, J.M.; Tarczy, P.

1994-01-27

315

High-frequency acoustic sensors for operation in a gaseous medium. Final report  

SciTech Connect

Photothermal microscopy is a technique for measuring thermal properties on a small scale by using focused laser beams as heat sources and as temperature probes. Typically used for nondestructive evaluation (NDE) of materials, its main advantage is its ability to measure types of flaws that are not visible optically or acoustically. Because of the optical nature of photothermal microscopy, sub-micron resolutions can be obtained in many of these thermal measurements. The greatest limitation of these systems is their relatively poor signal-to-noise ratios and, consequently, slow imaging speeds. To circumvent this problem, a variety of approaches to the detection of thermal waves has been pursued in recent years. This thesis compares the relative merits of a common class of techniques that rely on direct observation of physical changes in the heated sample, including a novel approach to interferometric measurement of the thermal expansion. It is found that the optimum approach depends not only on the physical properties of the sample being studies, but also upon the resolution of the experiment and the damage threshold of the specimen. Finally, this dissertation describes the applications of photothermal microscopy to the study of the anisotropic thermal properties of the new high-{Tc} superconductors. By adding a high-vacuum cryostat to the microscope, the authors have been able to study the influence of the superconducting transition on the thermal conductivity. The measurements of the anisotropic thermal conductivity demonstrate that the heat flow along the superconducting planes is enhanced below the transition, and that no such enhancement exists in the non-superconducting direction. Material examined was Bi-Ca-Sr-Cu-O.

Kino, G.S.

1990-12-31

316

Brief Summary of the OSHA (Occupational Safety and Health Administration) Interim Final Rule on ''Hazardous Waste Operations and Emergency Response'' and Implications for Federal Facilities.  

National Technical Information Service (NTIS)

This report is a short briefing document to help OEGC in understanding the scope and provisions of the Occupational Safety and Health Administration's (OSHA's) interim final rule for protection of workers engaged in operations involving hazardous waste, a...

C. F. Baes J. E. Mrochek T. E. Aldrich C. L. Glatthaar

1987-01-01

317

Induction machine  

DOEpatents

A polyphase rotary induction machine for use as a motor or generator utilizing a single rotor assembly having two series connected sets of rotor windings, a first stator winding disposed around the first rotor winding and means for controlling the current induced in one set of the rotor windings compared to the current induced in the other set of the rotor windings. The rotor windings may be wound rotor windings or squirrel cage windings.

Owen, Whitney H. (Ogden, UT)

1980-01-01

318

Simple Machines  

NSDL National Science Digital Library

Can you identify the six types of simple machines? 1. What do you know about Inclined Planes? Draw an example on your graphic organizer and state one fact.Inclined Plane 2. What do you know about levers? Draw an example on your graphic organizer and state one fact.Lever. 3. What do you know about pulleys? Draw an example on your graphic organizer and ...

Stewart, Miss

2010-03-24

319

Living Machines  

Microsoft Academic Search

\\u000a Ecological studies have revealed that nature has an in-built system to restore itself, thereby sustaining its continuity.\\u000a In other words, natural ecosystems can act as “Living Machines” in keeping the ecosystems habitable. The biological communities\\u000a – microbes, plants, and animals – serve as the driving force of several living technological innovations – constructed wetlands,\\u000a Lake Restores, Eco-Restorers, and Reedbeds. These

Yung-Tse Hung; Joseph F. Hawumba; Lawrence K. Wang

320

Nuclear reactor operator training for disadvantaged Americans. Final report, March 1, 1984--November 30, 1992  

SciTech Connect

The Nuclear Engineering and Engineering Physics Department of the University of Virginia was awarded a grant by the US Department of Energy in 1984 to establish and administer a reactor operator training program for disadvantaged Americans. Stipends were provided by the US DOE for five trainees with the anticipation that four other educational facilities would participate in the program. Sub-contracts were awarded to four other Universities: Massachusetts Institute of Technology, The University of Missouri at Columbia, Oregon State University, and The State University of New York at Buffalo. The initial two year program was very successful and the grant was renewed in late 1986 for another two years. MIT declined to participate in the second program and was replaced by Ohio State University. U.VA. was notified in September, 1987 that new funding would no longer be provided for this program after December, 1987. U.VA. requested and was granted a no cost extention for the program through December, 1990, since sufficient funds remained in the initial grant to pursue the program further. DOE subsequently approved a no cost extension through November, 1992.

Farrar, J.P.; Mulder, R.U.

1992-12-01

321

Machine Vision Online: Tips for Successfully Applying Machine Vision  

NSDL National Science Digital Library

This Web site provides many articles and educational resources related to machine vision. Most of the materials come from companies with significant experience with the topic, including Ford Motor Company, Adept Technology, and many others. Visitors to the site can read about the basics of machine vision and learn how to successfully implement and design a system. Inexperienced people should start with the Strategies for New Users section, which contains a glossary of terms and a couple brief introductions. The Technical Papers section has information on the various components of a machine vision system, and Applications by Industry has case studies of several different operations.

322

Real-Time Traffic Information for Emergency Evacuation Operations: Phase A Final Report  

SciTech Connect

There are many instances in which it is possible to plan ahead for an emergency evacuation (e.g., an explosion at a chemical processing facility). For those cases, if an accident (or an attack) were to happen, then the best evacuation plan for the prevailing network and weather conditions would be deployed. In other cases (e.g., the derailment of a train transporting hazardous materials), there may not be any previously developed plan to be implemented and decisions must be made ad-hoc on how to proceed with an emergency evacuation. In both situations, the availability of real-time traffic information plays a critical role in the management of the evacuation operations. To improve public safety during a vehicular emergency evacuation it is necessary to detect losses of road capacity (due to incidents, for example) as early as possible. Once these bottlenecks are identified, re-routing strategies must be determined in real-time and deployed in the field to help dissipate the congestion and increase the efficiency of the evacuation. Due to cost constraints, only large urban areas have traffic sensor deployments that permit access to some sort of real-time traffic information; any evacuation taking place in any other areas of the country would have to proceed without real-time traffic information. The latter was the focus of this SERRI/DHS (Southeast Region Research Initiative/Department of Homeland Security) sponsored project. That is, the main objective on the project was to improve the operations during a vehicular emergency evacuation anywhere by using newly developed real-time traffic-information-gathering technologies to assess traffic conditions and therefore to potentially detect incidents on the main evacuation routes. Phase A of the project consisted in the development and testing of a prototype system composed of sensors that are engineered in such a way that they can be rapidly deployed in the field where and when they are needed. Each one of these sensors is also equipped with their own power supply and a GPS (Global Positioning System) device to auto-determine its spatial location on the transportation network under surveillance. The system is capable of assessing traffic parameters by identifying and re-identifying vehicles in the traffic stream as those vehicles pass over the sensors. The system of sensors transmits, through wireless communication, real-time traffic information (travel time and other parameters) to a command and control center via an NTCIP (National Transportation Communication for ITS Protocol) -compatible interface. As an alternative, an existing NTCIP-compatible system accepts the real-time traffic information mentioned and broadcasts the traffic information to emergency managers, the media and the public via the existing channels. A series of tests, both in a controlled environment and on the field, were conducted to study the feasibility of rapidly deploying the system of traffic sensors and to assess its ability to provide real-time traffic information during an emergency evacuation. The results of these tests indicated that the prototype sensors are reliable and accurate for the type of application that is the focus of this project.

Franzese, Oscar [ORNL; Zhang, Li [Mississippi State University (MSU); Mahmoud, Anas M. [Mississippi State University (MSU); Lascurain, Mary Beth [ORNL; Wen, Yi [Mississippi State University (MSU)

2010-05-01

323

Final report: Task 4a.2 20% wind scenario assessment of electric grid operational features  

SciTech Connect

Wind integration modeling in electricity generation capacity expansion models is important in that these models are often used to inform political or managerial decisions. Poor representation of wind technology leads to under-estimation of wind's contribution to future energy scenarios which may hamper growth of the industry. The NREL's Wind Energy Deployment System (WinDS) model provides the most detailed representation of geographically disperse renewable resources and the optimization of transmission expansion to access these resources. Because WinDS was selected as the primary modeling tool for the 20% Wind Energy by 2030 study, it is the ideal tool for supplemental studies of the transmission expansion results. However, as the wind industry grows and knowledge related to the wind resource and integration of wind energy into the electric system develops, the WinDS model must be continually improved through additional data and innovative algorithms to capture the primary effects of variable wind generation. The detailed representation of wind technology in the WinDS model can be used to provide improvements to the simplified representation of wind technology in other capacity expansion models. This task did not employ the WinDS model, but builds from it and its results. Task 4a.2 provides an assessment of the electric grid operational features of the 20% Wind scenario and was conducted using power flow models accepted by the utility industry. Tasks 2 provides information regarding the physical flow of electricity on the electric grid which is a critical aspect of infrastructure expansion scenarios. Expanding transmission infrastructure to access remote wind resource in a physically realizable way is essential to achieving 20% wind energy by 2030.

Toole, Gasper L. [Los Alamos National Laboratory

2009-01-01

324

Integrated Inverter For Driving Multiple Electric Machines  

DOEpatents

An electric machine drive (50) has a plurality of inverters (50a, 50b) for controlling respective electric machines (57, 62), which may include a three-phase main traction machine (57) and two-phase accessory machines (62) in a hybrid or electric vehicle. The drive (50) has a common control section (53, 54) for controlling the plurality of inverters (50a, 50b) with only one microelectronic processor (54) for controlling the plurality of inverters (50a, 50b), only one gate driver circuit (53) for controlling conduction of semiconductor switches (S1-S10) in the plurality of inverters (50a, 50b), and also includes a common dc bus (70), a common dc bus filtering capacitor (C1) and a common dc bus voltage sensor (67). The electric machines (57, 62) may be synchronous machines, induction machines, or PM machines and may be operated in a motoring mode or a generating mode.

Su, Gui-Jia [Knoxville, TN; Hsu, John S [Oak Ridge, TN

2006-04-04

325

Some Attempts for Estimating Rock Strength and Rock Mass Classification from Cutting Force and Investigation of Optimum Operation of Tunnel Boring Machines  

Microsoft Academic Search

Summary.  Tunnel face and wall collapse are common during excavations performed by tunnel boring machines (TBMs) due to the difficulty\\u000a of correctly identifying the properties of the excavated rock. This identification, however, can be simplified by using the\\u000a cutting force to estimate rock strength, a method that has already proved quite successful in Japanese tunnel excavations.\\u000a This paper summarizes knowledge relating

K. Fukui; S. Okubo

2006-01-01

326

Final Hazard Categorization for the Remediation of Six 300-FF-2 Operable Unit Solid Waste Burial Grounds  

SciTech Connect

This report provides the final hazard categorization (FHC) for the remediation of six solid waste disposal sites (referred to as burial grounds) located in the 300-FF-2 Operable Unit (OU) on the Hanford Site. These six sites (618-1, 618-2, 618-3, 618-7, 618-8, and 618-13 Burial Grounds) were determined to have a total radionuclide inventory (WCH 2005a, WCH 2005d, WCH 2005e and WCH 2006b) that exceeds the DOE-STD-1027 Category 3 threshold quantity (DOE 1997) and are the subject of this analysis. This FHC document examines the hazards, identifies appropriate controls to manage the hazards, and documents the FHC and commitments for the 300-FF-2 Burial Grounds Remediation Project.

J. D. Ludowise

2006-12-12

327

Stability Analysis of a Reluctance-Synchronous Machine  

Microsoft Academic Search

A stability study of a reluctance-synchronous machine (synchronous-induction machine) is performed by applying the Nyquist stability criterion to the equations which describe the behavior of the machine during small displacements about a steady- state operating point. This investigation reveals that machine instability can occur at low speeds (low frequencies) even though balanced, constant amplitude, sinusoidal voltages are applied to the

THOMAS A. LIPO; PAUL C. KRAUSE

1967-01-01

328

Comparison of Metalworking Fluid Mist Exposures from Machining with Different Levels of Machine Enclosure  

Microsoft Academic Search

This research investigated the efficacy of machine enclosures in reducing employee exposures to metalworking fluid mist. Four hundred fifty-five personal samples from automotive machining and grinding operations collected over six years were divided into three groups based on the type and extent of enclosure and local exhaust ventilation. The sample groups were (1) machining equipment with original equipment manufacturer (OEM)

David Hands; Maura J. Sheehan; Ben Wong; Henry B. Lick

1996-01-01

329

Safety checking of machine code  

Microsoft Academic Search

We show how to determine statically whether it is safe for untrusted machine code to be loaded into a trusted host system.Our safety-checking technique operates directly on the untrusted machine-code program, requiring only that the initial inputs to the untrusted program be annotated with typestate information and linear constraints. This approach opens up the possibility of being able to certify

Zhichen Xu; Barton P. Miller; Thomas Reps

2000-01-01

330

Early succession of bacterial biofilms in paper machines.  

PubMed

Formation of biofilms causes severe problems in paper machines, and hence financial costs. It would be preferable to prevent attachment of the primary-colonizing bacteria than to control the growth of secondary communities, which are sheltered by exopolysaccharide slime layers. We have therefore investigated the early succession of paper-machine biofilms by incubating stainless-steel test coupons in the process water-flow lines in two paper machines operating in slightly alkaline conditions in temperatures (45 and 49 degrees C) supporting thermophilic microbes. Microbial succession was profiled using length heterogeneity analysis of PCR-amplified 16S rRNA genes (LH-PCR) and linking the sequence data of the created 16S rRNA gene libraries to the dominant LH-PCR peaks. Although the bacterial fingerprints obtained from the attached surface communities varied slightly in different samples, the biomarker signals of the dominating primary-colonizing bacterial groups remained high over time in each paper machine. Most of the 16S rRNA gene copies in the early biofilms were assigned to the genera Rhodobacter, Tepidimonas, and Cloacibacterium. The dominance of these sequence types decreased in the developing biofilms. Finally, as phylogenetically identical primary-colonizers were detected in the two different paper mills, the machines evidently had similar environmental conditions for bacterial growth and potentially a common source of contamination. PMID:19390885

Tiirola, Marja; Lahtinen, Tomi; Vuento, Matti; Oker-Blom, Christian

2009-07-01

331

Development of portable laser machining system for laser writing applications  

NASA Astrophysics Data System (ADS)

This study presents a portable laser machining system that consists of a fiber-optic diode laser source with a wavelength of 808 nm, optic/opto-mechanical components, a laser scanning module, and a laser energy control module. The laser beam quality was measured at different operation frequencies during system evaluation. The experimental results of beam profile evaluation indicate that the enlarged collimated beam was the TEM00 mode with a roundness of approximately of 96%. The output laser power level increased as the pulse frequency increased during laser power evaluation. To control the rotating angle of the galvanometric scanning system, the deflective angle was adjusted using a 0.192 voltage to obtain a deflective value of 1mm and the maximum scan field of 100 × 100mm2. The laser source operated at different frequencies, with pulse widths ranging from 530 to 48 ?s. Finally, the proposed machine can also be used for black thick paper laser writing applications.

Hsiao, Wen-Tse; Tseng, Shih-Feng; Chung, Chien-Kai; Chen, Pin-Hung; Chen, Ming-Fei

2013-03-01

332

JBK-75 stainless steel machinability study.  

National Technical Information Service (NTIS)

The study on forgings characterized machinability of the material by varying cutting speeds and feedrates utilizing four tools for the roughing operation and four tools for the semi-finish operation. Tools tested were obtained from four manufacturers. Twe...

A. P. McManigle A. W. Simonis

1993-01-01

333

The Single Needle Lockstitch Machine. Module 1.  

ERIC Educational Resources Information Center

This module on parts of the machine, one in a series on the single needle lockstitch sewing machine for student self-study, contains eight sections. Each section contains the following parts: an introduction, directions, an objective, learning activities, student information, student self-check, check-out activities, and an instructor's final

South Carolina State Dept. of Education, Columbia. Office of Vocational Education.

334

Reading Machines for Blind People.  

ERIC Educational Resources Information Center

Ten stages of developing reading machines for blind people are analyzed: handling of text material; optics; electro-optics; pattern recognition; character recognition; storage; speech synthesizers; browsing and place finding; computer indexing; and other sources of input. Cost considerations of the final product are emphasized. (CL)

Fender, Derek H.

1983-01-01

335

EXPLAINING "TEACHING MACHINES" AND PROGRAMMING.  

ERIC Educational Resources Information Center

THIS IS A PROGRAMED INSTRUCTION BOOK ON THE SUBJECT OF PROGRAMED INSTRUCTION. IT DEFINES AND COMPARES LINEAR AND BRANCHING PROGRAMING, AND GIVES ADVANTAGES AND DISADVANTAGES OF EACH METHOD. SELF-ORGANIZING PROGRAMING IS ALSO DISCUSSED. FINALLY, THE AUTHOR SUGGESTS SEVERAL STEPS THAT SHOULD BE TAKEN BEFORE ANY TEACHING MACHINE IS SELECTED, AND…

CRAM, DAVID

336

Phase 3 of a brushless doubly-fed machine system development program. Final technical report, January 1, 1992--June 30, 1993.  

National Technical Information Service (NTIS)

Since the inception of the BDFM development program in 1989, the value of BDFM technology has become apparent. The BDFM provides for adjustable speed, synchronous operation while keeping costs associated with the required power conversion equipment lower ...

G. C. Alexander R. Spee A. K. Wallace

1993-01-01

337

Parallel machines: Parallel machine languages  

SciTech Connect

This book presents a framework for understanding the tradeoffs between the conventional view and the dataflow view with the objective of discovering the critical hardware structures which must be present in any scalable, general-purpose parallel computer to effectively tolerate latency and synchronization costs. The author presents an approach to scalable general purpose parallel computation. Linguistic Concerns, Compiling Issues, Intermediate Language Issues, and hardware/technological constraints are presented as a combined approach to architectural Develoement. This book presents the notion of a parallel machine language.

Iannucci, R.A. (IBM (US))

1990-01-01

338

The Final Count Down: A Review of Three Decades of Flight Controller Training Methods for Space Shuttle Mission Operations  

NASA Technical Reports Server (NTRS)

Operations of human spaceflight systems is extremely complex, therefore the training and certification of operations personnel is a critical piece of ensuring mission success. Mission Control Center (MCC-H), at the Lyndon B. Johnson Space Center, in Houston, Texas manages mission operations for the Space Shuttle Program, including the training and certification of the astronauts and flight control teams. As the space shuttle program ends in 2011, a review of how training for STS-1 was conducted compared to STS-134 will show multiple changes in training of shuttle flight controller over a thirty year period. This paper will additionally give an overview of a flight control team s makeup and responsibilities during a flight, and details on how those teams have been trained certified over the life span of the space shuttle. The training methods for developing flight controllers have evolved significantly over the last thirty years, while the core goals and competencies have remained the same. In addition, the facilities and tools used in the control center have evolved. These changes have been driven by many factors including lessons learned, technology, shuttle accidents, shifts in risk posture, and generational differences. A primary method used for training Space Shuttle flight control teams is by running mission simulations of the orbit, ascent, and entry phases, to truly "train like you fly." The reader will learn what it is like to perform a simulation as a shuttle flight controller. Finally, the paper will reflect on the lessons learned in training for the shuttle program, and how those could be applied to future human spaceflight endeavors.

Dittemore, Gary D.; Bertels, Christie

2011-01-01

339

High-intensity drying processes -- Impulse drying: Report 15 (final report). Production of linerboard on a pilot paper machine, subsequent commercial converting trials and preliminary economic assessment  

SciTech Connect

In September 1998, 33{number_sign} liner was produced on the {number_sign}4 pilot machine under both single-felted wet pressing and impulse drying conditions. In October 1998, the pilot produced liner and commercial liner were converted to combined board and corrugated boxes at a commercial box plant. In January 1999, linerboard, medium, and combined board and box testing were completed. The pilot trials demonstrated that 33{number_sign} liner could be impulse dried at a reel speed of 380 m/min. Press dryness was improved by as much as 4 points, while CD STFI and CD ring crush were improved by more than 10%. Improvements to the smoothness of heated side of sheet were also realized. Commercial box plant converting trials demonstrated that impulse dried linerboard can be used to increase ECT and box compression strength by as much as 10%. As anticipated, print quality was found to be superior. A preliminary economic analysis was performed in which an impulse dryer would increase press dryness by 4 points and would allow the basis weight to be reduced by 10%. The economic model showed that the 4 points in dryness would translate to a 17% tonnage increase. Applying the 10% basis weight reduction resulted in an increase in productivity, on an area basis, of 30%. The pulp cost savings was found to outweigh any additional electric power costs.

Orloff, D.I.

1999-04-01

340

Mind & Machine  

NSDL National Science Digital Library

Mind & Machine is a weekly column provided by Ashley Dunn for the New York Times Cybertimes that discusses topics related to computing, technology, and the Internet. Recent columns have addressed the topics of the development of Internet telephony, possible futures of user interfaces, the history of technology and standards, and the Internet as a vehicle for community. Articles are well written, opinionated, and thought provoking. Mr. Dunn is a free lance writer who has written for such papers as the New York Times, the Los Angeles Times, the Seattle Post-Intelligencer, and the South China Morning Post. Note that the site is available only upon registration and is free of charge only in the US.

Dunn, Ashley.

1996-01-01

341

VIRTUAL TRAINING ENVIRONMENT FOR A 3AXIS CNC MILLING MACHINE  

Microsoft Academic Search

A virtual training environment for a 3-axis CNC milling machine is presented. The key elements of the environment are: (a) textured 3D photo-realistic virtual models of the machines and lab; (b) machine simulator for the machines' controls and moving parts; (c) semi-empirical model of the machining operation; (d) hierarchical knowledge-base for process training; (e) unstructured knowledge-base for lecture delivery; (f)

Tamer M. Wasfy; Ayman M. Wasfy; Hazim El-Mounayri; Daniel Aw

342

Construction and validation tests of a torsion test machine  

Microsoft Academic Search

Present work aimed at developing, testing and operating a computerized prototype machine for performing cold plastic torsion tests. The operation and project of this machine were carried out in the Laboratory of Metal Forming at UDESC, Joinville. The equipment consists of a horizontal torsion machine composed of an electric motor, a wheel, a horizontal shaft and a control and acquisition

José Divo Bressan; Ricardo Kirchhof Unfer

2006-01-01

343

AN OPEN NUMERICAL CONTROL ARCHITECTURE FOR ELECTRO DISCHARGE MACHINING1  

Microsoft Academic Search

Numerical control (NC) systems are opening wide fields of application for ED machining. An operation along a 3-D course makes possible to produce a very complex geometry with a simple tool electrode and ED machining turns into a shaping technique. A standard NC system can not be used for control operations in ED machines because of substantial differences resulting from

A. Behrens; J. Ginzel; Bundeswehr Hamburg

344

FY05 LDRD Final Report Investigation of AAA+ Protein Machines that Participate in DNA Replication, Recombination, and in Response to DNA Damage LDRD Project Tracking Code: 04-LW-049.  

National Technical Information Service (NTIS)

The AAA+ proteins are remarkable macromolecules that are able to self-assemble into nanoscale machines. These protein machines play critical roles in many cellular processes, including the processes that manage a cell's genetic material, but the mechanism...

C. Venclovas D. Barsky D. Sawicka M. S. de Carvalho-Kavanagh

2006-01-01

345

Proprties of the Carrol system and a machine design for solar-powered, air-cooled, absorption space cooling. Phase I and Phase II. Final report, September 1977-March 1979  

SciTech Connect

The name Carrol has been selected as a convenient short-hand designation for a prime candidate chemical system comprising ethylene glycol-lithium bromide as an absorbent mixture with water as a refrigerant. The instrumentation, methods of handling data and numerical results from a systematic determination of Carrol property data required to design an air cooled absorption machine based on this chemical system are described. These data include saturation temperature, relative enthalpy, density, specific heat capacity, thermal conductivity, viscosity and absorber film heat transfer coefficient as functions of solution temperature and Carrol concentration over applicable ranges. For each of the major components of the absorption chiller, i.e., generator, chiller, absorber, condenser, heat exchanger, purge and controls, the report contains an assembly drawing and the principal operating characteristics of that component.

Biermann, W.J.

1981-05-01

346

Surface finish of precision machined advanced materials  

Microsoft Academic Search

This paper studies the surface finish and integrity of glass, silicon, some advanced ceramics and aluminum-based metal matrix composites (MMCs) reinforced with ceramic particles, precision machined by various machining processes. The studies revealed that grinding\\/lapping operations using inexpensive machine tools can produce ductile streaks on glass and silicon surfaces under good grinding\\/lapping conditions. This resulted in significantly shortened polishing time

Zhaowei Zhong

2002-01-01

347

Machinability and brittleness of glass-ceramics  

Microsoft Academic Search

The relationship between the machinability and the brittleness of glass-ceramic materials is investigated. A brittleness index (B), given by the ratio of the hardness to the fracture toughness, is proposed as a parameter for estimating the machinability. This approach is confirmed by considering experimental data from the literature on turning operations of mica-containing glass-ceramics. It is shown that machinability parameters,

A. R. Boccaccini

1997-01-01

348

Embedded control system for computerized franking machine  

NASA Astrophysics Data System (ADS)

This paper presents a novel control system for franking machine. A methodology for operating a franking machine using the functional controls consisting of connection, configuration and franking electromechanical drive is studied. A set of enabling technologies to synthesize postage management software architectures driven microprocessor-based embedded systems is proposed. The cryptographic algorithm that calculates mail items is analyzed to enhance the postal indicia accountability and security. The study indicated that the franking machine is reliability, performance and flexibility in printing mail items.

Shi, W. M.; Zhang, L. B.; Xu, F.; Zhan, H. W.

2007-12-01

349

Material Removal Rate, Kerf, and Surface Roughness of Tungsten Carbide Machined with Wire Electrical Discharge Machining  

NASA Astrophysics Data System (ADS)

In this article, the effects of varying seven different machining parameters in addition to varying the material thickness on the machining responses such as material removal rate, kerf, and surface roughness of tungsten carbide samples machined by wire electrical discharge machining (WEDM) were investigated. The design of experiments was based on a Taguchi orthogonal design with 8 control factors with three levels each, requiring a set of 27 experiments that were repeated three times. ANOVA was carried out after obtaining the responses to determine the significant factors. The work piece thickness was expected to have a major effect on the material removal rate but showed to be significant in the case of surface roughness only. Finally, optimization of the machining responses was carried out and models for the material removal rate, kerf, and surface roughness were created. The models were validated through confirmation experiments that showed significant improvements in machining performance for all investigated machining outcomes.

Shah, Aqueel; Mufti, Nadeem A.; Rakwal, Dinesh; Bamberg, Eberhard

2011-02-01

350

Performance Analysis of a Novel Magnetic-Geared Tubular Linear Permanent Magnet Machine  

Microsoft Academic Search

This paper presents a novel tubular linear permanent magnet machine for direct-drive applications, in which a magnetic gear is integrated with a tubular linear machine, aiming to improve the thrust force density and enhance the machine efficiency. The operating principle of the proposed machine is introduced and the machine design with improved thrust force density is presented and discussed. By

Shuangxia Niu; S. L. Ho; W. N. Fu

2011-01-01

351

Modular logic controllers for machining systems: formal representation and performance analysis using Petri nets  

Microsoft Academic Search

The machining systems considered are high volume transfer lines which are widely used in automotive manufacturing. In these machining systems, several machines linked together provide complete processing of a part. A logic controller is a discrete event supervisory system which controls parallel and synchronized sequences of elementary operations of each machine to achieve the goal of the machining system. Normal

D. M. Tilbury; P. P. Khargonekar

1999-01-01

352

Operation and Performance of a Biphase Turbine Power Plant at the Cerro Prieto Geothermal Field (Final Report)  

SciTech Connect

A full scale, wellhead Biphase turbine was manufactured and installed with the balance of plant at Well 103 of the Cerro Prieto geothermal resource in Baja, California. The Biphase turbine was first synchronized with the electrical grid of Comision Federal de Electricidad on August 20, 1997. The Biphase power plant was operated from that time until May 23, 2000, a period of 2 years and 9 months. A total of 77,549 kWh were delivered to the grid. The power plant was subsequently placed in a standby condition pending replacement of the rotor with a newly designed, higher power rotor and replacement of the bearings and seals. The maximum measured power output of the Biphase turbine, 808 kWe at 640 psig wellhead pressure, agreed closely with the predicted output, 840 kWe. When combined with the backpressure steam turbine the total output power from that flow would be increased by 40% above the power derived only from the flow by the present flash steam plant. The design relations used to predict performance and design the turbine were verified by these tests. The performance and durability of the Biphase turbine support the conclusion of the Economics and Application Report previously published, (Appendix A). The newly designed rotor (the Dual Pressure Rotor) was analyzed for the above power condition. The Dual Pressure Rotor would increase the power output to 2064 kWe by incorporating two pressure letdown stages in the Biphase rotor, eliminating the requirement for a backpressure steam turbine. The power plant availability was low due to deposition of solids from the well on the Biphase rotor and balance of plant problems. A great deal of plant down time resulted from the requirement to develop methods to handle the solids and from testing the apparatus in the Biphase turbine. Finally an online, washing method using the high pressure two-phase flow was developed which completely eliminated the solids problem. The availability of the Biphase turbine itself was 100% after implementations of this method in March 2000. However, failures of instrumentation and control system components led to additional plant down time and damage to the bearings and seals. The enthalpy and pressure of well 103 declined substantially from the inception of the project. When the project was started the wellhead pressure and enthalpy were 760 psig and 882 Btu/lb respectively. At the time the plant was placed in standby the corresponding values were only 525 psig and 658 Btu/lb. This reduced the available plant power to only 400 kWe making the project economically unfeasible. However, replacement of the existing rotor with the Dual Pressure Rotor and replacement of the bearings and seals will enable the existing Biphase turbine to produce 1190 kWe at the present well conditions without the backpressure steam turbine. Operation with the present staff can then be sustained by selling power under the existing Agreement with CFE. Implementation of this option is recommended with operation of the facility to continue as a demonstration plant. Biphase turbine theory, design and performance are reported herein. The construction of the Biphase turbine and power plant and operational experience are detailed. Improvements in the Biphase turbine are indicated and analyzed. The impact of Biphase techonology on geothermal power production is discussed and recommendations made.

Hays, Lance G. [Douglas Energy Company, Placentia, CA (United States)

2000-09-01

353

Machine Tool Series. Duty Task List.  

ERIC Educational Resources Information Center

This task list is intended for use in planning and/or evaluating a competency-based course to prepare machine tool, drill press, grinding machine, lathe, mill, and/or power saw operators. The listing is divided into six sections, with each one outlining the tasks required to perform the duties that have been identified for the given occupation.…

Oklahoma State Dept. of Vocational and Technical Education, Stillwater. Curriculum and Instructional Materials Center.

354

Building and simulating protein machines  

NASA Astrophysics Data System (ADS)

Glycolysis is a central metabolic pathway, present in almost all organisms, that produces energy. The pathway has been extensively investigated by biochemists. There is a significant body of structural and biochemical information about this pathway. The complete pathway is a ten step process. At each step, a specific chemical reaction is catalyzed by a specific enzyme. Fructose bisphosphate aldolase (FBA) and triosephosphate isomerase (TIM) catalyze the fourth and the fifth steps on the pathway. This thesis investigates the possible substrate transfer mechanism between FBA and TIM. FBA cleaves its substrate, the six-carbon fructose-1,6-bisphosphate (FBP), into two three-carbon products -- glyceraldehydes 3-phosphate (GAP) and dihydroxy acetone phosphate (DHAP). One component of these two products, DHAP, is the substrate for TIM and the other component GAP goes directly to GAPDH, the subsequent enzyme on the pathway. TIM converts DHAP to GAP and delivers the product to GAPDH. I employ Elastic Network Models (ENM) to investigate the mechanistic and dynamic aspects of the functionality of FBA and TIM enzymes -- (1) the effects of the oligomerization of these two enzymes on their functional dynamics and the coordination of the individual protein's structural components along the functional region; and (2) the mechanistic synchrony of these two protein machines that may enable them to operate in a coordinated fashion as a conjugate machine -- transferring the product from FBA as substrate to TIM. A macromolecular machine comprised of FBA and TIM will facilitate the substrate catalysis mechanism and the product flow between FBA and TIM. Such a machine could be used as a functional unit in building a larger a machine for the structural modeling of the whole glycolysis pathway. Building such machines for the glycolysis pathway may reveal the interplay of the enzymes as a complete machine. Also the methods and insights developed from the efforts to build such large machines could be applied to build macromolecular structures for other biologically important clusters of interacting enzymes centered around individual metabolic pathways.

Katebi, Ataur Rahim

355

Machining mode and error analysis in non-axisymmetric aspheric surface grinding  

NASA Astrophysics Data System (ADS)

To improve machining accuracy of non-axisymmetric lens, this paper presents the grinding mode with equal arc length feeding in parallel grinding, and analyses the relations between machining error and machining step in both equal length mode and equal arc length mode. For the same purpose, this paper also discusses the calculation of 2-axis machining path compared with 3-axis machining. Finally, the calculation and simulation of machining path are carried out to guide practical grinding.

Wang, Zhen-zhong; Guo, Yin-biao; Huang, Hao; Gou, Jiang

2007-12-01

356

Semantic Analysis in Machine Translation.  

ERIC Educational Resources Information Center

In many cases machine-translation does not produce satisfactory results within the framework of purely formal (morphological and syntaxic) analysis, particularly, in the case of syntaxic and lexical homonomy. An algorithm for syntaxic-semantic analysis is proposed, and its principles of operation are described. The syntaxico-semantic structure is…

Skorokhodko, E. F.

1970-01-01

357

Basic Mathematics Machine Calculator Course.  

ERIC Educational Resources Information Center

This series of four text-workbooks was designed for tenth grade mathematics students who have exhibited lack of problem-solving skills. Electric desk calculators are to be used with the text. In the first five chapters of the series, students learn how to use the machine while reviewing basic operations with whole numbers, decimals, fractions, and…

Windsor Public Schools, CT.

358

Optical-Fiber-Welding Machine  

NASA Technical Reports Server (NTRS)

Technique yields joints with average transmissivity of 91.6 percent. Electric arc passed over butted fiber ends to melt them together. Maximum optical transmissivity of joint achieved with optimum choice of discharge current, translation speed, and axial compression of fibers. Practical welding machine enables delicate and tedious joining operation performed routinely.

Goss, W. C.; Mann, W. A.; Goldstein, R.

1985-01-01

359

An industrial sewing machine variable speed controller  

NASA Technical Reports Server (NTRS)

The apparel industry is attempting to move in a new direction in the coming decade. Since the invention of an electrically powered sewing machine, the operator has been seated. Today, companies are switching from a sit down operation to a stand up operation involving modular stations. The old treadle worked well with the sitting operator, but problems have been found when trying to use the same treadle with a standing operator. This report details a new design for a treadle to operate an industrial sewing machine that has a standing operator. Emphasis is placed on the ease of use by the operator, as well as the ergonomics involved. Procedures for testing the design are included along with possible uses for the treadle in other applications besides an industrial sewing machine.

Estes, Christa; Spiggle, Charles; Swift, Shannon; Vangeffen, Stephen; Youngner, Frank

1992-01-01

360

An industrial sewing machine variable speed controller  

NASA Astrophysics Data System (ADS)

The apparel industry is attempting to move in a new direction in the coming decade. Since the invention of an electrically powered sewing machine, the operator has been seated. Today, companies are switching from a sit down operation to a stand up operation involving modular stations. The old treadle worked well with the sitting operator, but problems have been found when trying to use the same treadle with a standing operator. This report details a new design for a treadle to operate an industrial sewing machine that has a standing operator. Emphasis is placed on the ease of use by the operator, as well as the ergonomics involved. Procedures for testing the design are included along with possible uses for the treadle in other applications besides an industrial sewing machine.

Estes, Christa; Spiggle, Charles; Swift, Shannon; Vangeffen, Stephen; Youngner, Frank

361

Mechanical design of walking machines.  

PubMed

The performance of existing actuators, such as electric motors, is very limited, be it power-weight ratio or energy efficiency. In this paper, we discuss the method to design a practical walking machine under this severe constraint with focus on two concepts, the gravitationally decoupled actuation (GDA) and the coupled drive. The GDA decouples the driving system against the gravitational field to suppress generation of negative power and improve energy efficiency. On the other hand, the coupled drive couples the driving system to distribute the output power equally among actuators and maximize the utilization of installed actuator power. First, we depict the GDA and coupled drive in detail. Then, we present actual machines, TITAN-III and VIII, quadruped walking machines designed on the basis of the GDA, and NINJA-I and II, quadruped wall walking machines designed on the basis of the coupled drive. Finally, we discuss walking machines that travel on three-dimensional terrain (3D terrain), which includes the ground, walls and ceiling. Then, we demonstrate with computer simulation that we can selectively leverage GDA and coupled drive by walking posture control. PMID:17148055

Arikawa, Keisuke; Hirose, Shigeo

2007-01-15

362

Small-scale hydroelectric power demonstration project: Broad River Electric Cooperative, Inc. , Cherokee Falls, South Carolina: Final operations and maintenance report  

SciTech Connect

The purpose of this report is to give a final accounting of the costs and benefits derived from the first two years of operation of the Cherokee Falls, Broad River Hydroelectric Demonstration Project which was built at Cherokee Falls, South Carolina. Prior to construction, Broad River Electric Cooperative, Inc. (BREC) executed a Cooperative Agreement with the US Department of Energy (DOE) Number FC07-80ID12125 which provided $1,052,664 toward the construction of the facility. This agreement requires that BREC document for DOE a summary of the complete operating statistics, operating and maintenance cost, and revenues from power sales for a two-year operating period. A complete reporting covering the design, technical, construction, legal, institutional, environmental and other related aspects of the total project was furnished to DOE previously for publication as the ''Final Technical and Construction Cost Report''. For this reason these elements will not be addressed in detail in this report. In order to make this account a more meaningful discussion of the initial two-year and four month production period, it is necessary to detail several unique events concerning the project which set Cherokee Falls apart from other projects developed under similar Cooperative Agreements with DOE. Accordingly, this report will discuss certain major problems experienced with the design, operation and maintenance, energy production, as well as the operation and maintenance cost and value of the power produced for the first 28 months of operation. 3 figs.

Not Available

1988-08-01

363

Optimum torque control algorithm for wide speed range and four quadrant operation of stator flux oriented induction machine drive without regenerative unit  

Microsoft Academic Search

In general, low power induction motor drive systems are equipped with PWM inverter using a diode rectifier frond-end (has not a regenerative unit) to supply the ac power from the mains to the dc link. The main features of the proposed algorithm are the capability to generate the optimum torque, for four quadrant operation of drive system, over the wide

Nicola-Valeriu Olarescu; Martin Weinmann; Stefan Zeh; Sorin Musuroi; Ciprian Sorandaru

2011-01-01

364

Face Recognition in Humans and Machines  

NASA Astrophysics Data System (ADS)

The study of human face recognition by psychologists and neuroscientists has run parallel to the development of automatic face recognition technologies by computer scientists and engineers. In both cases, there are analogous steps of data acquisition, image processing, and the formation of representations that can support the complex and diverse tasks we accomplish with faces. These processes can be understood and compared in the context of their neural and computational implementations. In this chapter, we present the essential elements of face recognition by humans and machines, taking a perspective that spans psychological, neural, and computational approaches. From the human side, we overview the methods and techniques used in the neurobiology of face recognition, the underlying neural architecture of the system, the role of visual attention, and the nature of the representations that emerges. From the computational side, we discuss face recognition technologies and the strategies they use to overcome challenges to robust operation over viewing parameters. Finally, we conclude the chapter with a look at some recent studies that compare human and machine performances at face recognition.

O'Toole, Alice; Tistarelli, Massimo

365

Chip breaking system for automated machine tool  

DOEpatents

The invention is a rotary selectively directional valve assembly for use in an automated turret lathe for directing a stream of high pressure liquid machining coolant to the interface of a machine tool and workpiece for breaking up ribbon-shaped chips during the formation thereof so as to inhibit scratching or other marring of the machined surfaces by these ribbon-shaped chips. The valve assembly is provided by a manifold arrangement having a plurality of circumferentially spaced apart ports each coupled to a machine tool. The manifold is rotatable with the turret when the turret is positioned for alignment of a machine tool in a machining relationship with the workpiece. The manifold is connected to a non-rotational header having a single passageway therethrough which conveys the high pressure coolant to only the port in the manifold which is in registry with the tool disposed in a working relationship with the workpiece. To position the machine tools the turret is rotated and one of the tools is placed in a material-removing relationship of the workpiece. The passageway in the header and one of the ports in the manifold arrangement are then automatically aligned to supply the machining coolant to the machine tool workpiece interface for breaking up of the chips as well as cooling the tool and workpiece during the machining operation.

Arehart, Theodore A. (Clinton, TN); Carey, Donald O. (Oak Ridge, TN)

1987-01-01

366

U.S. DOE/RL OPERATIONS OFFICE FINAL REPORT FOR THE OPERATIONAL READINESS REVIEW FOR STARTUP OF THE K BASIN SLUDGE WATER SYSTEM  

SciTech Connect

An Operational Readiness Review (ORR) was conducted by the U.S. Department of Energy (DOE), Richland Operations Office (RL) to verify that an adequate state of readiness has been achieved for startup of the K East Basin Sludge Water System (SWS) as applied to the North Loadout Pit (NLOP). The DOE ORR was conducted during the period of May 19-26, 2004. The DOE ORR Team has concluded that the K Basins SWS is ready to start operations, subject to completion and verification of identified pre-start findings. The ORR was conducted in accordance with the Spent Nuclear Fuel (SNF) K Basin Sludge Water System (SWS) Operational Readiness Review (ORR) Plan of Action, December 19, 2003, and the Implementation Plan for the Operational Readiness Review for Startup of the K Basins Sludge Wafer System North Loadout Pit, DOE/RL-2003-21, Rev. 1. Review activities consisted of staff interviews, procedure and document reviews, observations of normal facility operations and operational drills and actual upset conditions that occurred during the ORR. The DOE ORR Team also reviewed and assessed the adequacy of the contractor ORR and the RL Line Management Review. The ORR Team generally concurs with the findings and observations of these previous assessments. Detailed comments regarding these reviews are documented herein.

IRWIN, R.M.

2004-06-15

367

Evaluation of coordinate measuring machines  

NASA Astrophysics Data System (ADS)

Positional accuracy, thermal distortion, and load distortion of the coordinate measuring machine (CMM) are among the most important factors contributing to the final accuracy of the inspected tool or gage. The positional accuracy of the CMM is addressed and a method to evaluate the volumetric accuracy of a bridge design CMM work zone (the volumetric space that houses inspection points on a part to be inspected is described.

Russell, R. J.

1982-11-01

368

Mill profiler machines soft materials accurately  

NASA Technical Reports Server (NTRS)

Mill profiler machines bevels, slots, and grooves in soft materials, such as styrofoam phenolic-filled cores, to any desired thickness. A single operator can accurately control cutting depths in contour or straight line work.

Rauschl, J. A.

1966-01-01

369

49 CFR 236.772 - Machine, interlocking.  

Code of Federal Regulations, 2013 CFR

...Definitions § 236.772 Machine, interlocking. An assemblage of manually operated levers or other devices for the control of signals, switches or other units. Cross Reference: Magnet, track, see §...

2013-10-01

370

Radial Force Characteristics of Switched Reluctance Machine.  

National Technical Information Service (NTIS)

The operation of a switched reluctance machine with eccentric rotor position creates asymmetrical airgap flux distributions and results in unbalanced magnetic pull. This paper comprehensively investigates the static and dynamic radial force characteristic...

N. R. Garrigan A. Storace W. L. Soong T. A. Lipo C. M. Stephens

1999-01-01

371

Investigation of Design, Maintenance and Operating Procedures of Wheelchair Lifts on Transit Buses: Final Report Phase 3.  

National Technical Information Service (NTIS)

The report describes the findings of a project conducted to investigate the design, operation, and maintenance aspects of wheelchair lifts. The project objective is to assess the nature of problems pertaining to design, manufacture, operation, and mainten...

H. Aktan S. Khasnabis J. Pandya

1995-01-01

372

76 FR 80409 - Draft Supplement 2 to Final Environmental Statement Related to the Operation of Watts Bar Nuclear...  

Federal Register 2010, 2011, 2012, 2013

...Statement Related to the Operation of Watts Bar Nuclear Plant, Unit 2; Tennessee...Supplement 2, Related to the Operation of Watts Bar Nuclear Plant [WBN], Unit 2...Stephen J. Campbell, Chief, Watts Bar Special Projects Branch,...

2011-12-23

373

76 FR 70169 - Draft Supplement 2 to Final Environmental Statement Related to the Operation of Watts Bar Nuclear...  

Federal Register 2010, 2011, 2012, 2013

...Statement Related to the Operation of Watts Bar Nuclear Plant, Unit 2; Tennessee...Supplement 2, Related to the Operation of Watts Bar Nuclear Plant [WBN], Unit 2...Stephen J. Campbell, Chief, Watts Bar Special Projects Branch,...

2011-11-10

374

Design and Experimental Validation for Direct-Drive Fault-Tolerant Permanent-Magnet Vernier Machines  

PubMed Central

A fault-tolerant permanent-magnet vernier (FT-PMV) machine is designed for direct-drive applications, incorporating the merits of high torque density and high reliability. Based on the so-called magnetic gearing effect, PMV machines have the ability of high torque density by introducing the flux-modulation poles (FMPs). This paper investigates the fault-tolerant characteristic of PMV machines and provides a design method, which is able to not only meet the fault-tolerant requirements but also keep the ability of high torque density. The operation principle of the proposed machine has been analyzed. The design process and optimization are presented specifically, such as the combination of slots and poles, the winding distribution, and the dimensions of PMs and teeth. By using the time-stepping finite element method (TS-FEM), the machine performances are evaluated. Finally, the FT-PMV machine is manufactured, and the experimental results are presented to validate the theoretical analysis.

Liu, Guohai; Yang, Junqin; Chen, Ming; Chen, Qian

2014-01-01

375

Cutting sound enhancement system for mining machines  

SciTech Connect

The invention relates to the field of acoustical monitoring in a mining environment in general, and in particular to a system for focusing an acoustical transducer on the cutting head of a mining machine and coupling the output of the transducer to headphones worn by the remotely positioned operator of the machine to assist the operator in audibly detecting the location of the parameters of a coal seam.

Leigh, M.C.; Kwitowski, A.J.

1991-01-24

376

Alpha Channeling in Mirror Machines  

SciTech Connect

Because of their engineering simplicity, high-?, and steady-state operation, mirror machines and related open-trap machines such as gas dynamic traps, are an attractive concept for achieving controlled nuclear fusion. In these open-trap machines, the confinement occurs by means of magnetic mirroring, without the magnetic field lines closing upon themselves within the region of particle confinement. Unfortunately, these concepts have not achieved to date very spectacular laboratory results, and their reactor prospects are dimmed by the prospect of a low Q-factor, the ratio of fusion power produced to auxiliary power. Nonetheless, because of its engineering promise, over the years numerous improvements have been proposed to enhance the reactor prospects of mirror fusion, such as tandem designs, end-plugging, and electric potential barriers.

Fisch N.J.

2005-10-19

377

Minimal universal quantum heat machine.  

PubMed

In traditional thermodynamics the Carnot cycle yields the ideal performance bound of heat engines and refrigerators. We propose and analyze a minimal model of a heat machine that can play a similar role in quantum regimes. The minimal model consists of a single two-level system with periodically modulated energy splitting that is permanently, weakly, coupled to two spectrally separated heat baths at different temperatures. The equation of motion allows us to compute the stationary power and heat currents in the machine consistent with the second law of thermodynamics. This dual-purpose machine can act as either an engine or a refrigerator (heat pump) depending on the modulation rate. In both modes of operation, the maximal Carnot efficiency is reached at zero power. We study the conditions for finite-time optimal performance for several variants of the model. Possible realizations of the model are discussed. PMID:23410316

Gelbwaser-Klimovsky, D; Alicki, R; Kurizki, G

2013-01-01

378

Precursor systems analyses of automated highway systems. Activity area K AHS roadway operational analysis. Final report, September 1993-November 1994  

SciTech Connect

This study considers the roadway operational requirements of an automated highway system (AHS) in light of corresponding operational requirements for existing conventional highways with traffic operations centers (TOCs). Contrasts and similarities between TOC and AHS operations are identified. Maintenance operations and activities are the focus of the study. Similarities and contrasts between AHS and conventional highways are considered, analyzed, and discussed to raise issues risks. Urban/rural, passenger/heavy vehicle, and representative system configuration differences are covered insofar as there are significant differences among these categories of possible AHS operations. Maintenance needs and incident response requirements as they would impact as AHS operating agency are qualitatively analyzed. Two possible staged deployment scenarios for AHS are presented. The fault tolerance of the AHS is assessed. Results of interviews with personnel in charge of several existing TOCs have been summarized. The role of the driver in an AHS is discussed.

Schulze, R.; Roper, D.; Tsao, J.; Michael, B.

1995-05-01

379

Applications and modelling of bulk HTSs in brushless ac machines  

NASA Astrophysics Data System (ADS)

The use of high temperature superconducting material in its bulk form for engineering applications is attractive due to the large power densities that can be achieved. In brushless electrical machines, there are essentially four properties that can be exploited; their hysteretic nature, their flux shielding properties, their ability to trap large flux densities and their ability to produce levitation. These properties translate to hysteresis machines, reluctance machines, trapped-field synchronous machines and linear motors respectively. Each one of these machines is addressed separately and computer simulations that reveal the current and field distributions within the machines are used to explain their operation.

Barnes, G. J.; McCulloch, M. D.; Dew-Hughes, D.

2000-06-01

380

The development of an optical fiber alignment and fusion machine  

Microsoft Academic Search

This paper introduces the development of an optical fiber alignment and fusion machine that has sub-micrometer precision. The system structure, resolution of machine components, and operation procedure are illustrated in this article. Experiments are conducted to test the function of this machine. The results are satisfactory and some of them are reported in this article.

Chih-Liang Chu; Shyng-Her Lin; Zu-Yu Fu; Kung-Kun Yen

2005-01-01

381

Parameter Optimization of Ultrasonic Machining Process Using Nontraditional Optimization Algorithms  

Microsoft Academic Search

The optimum selection of process parameters is essential for advanced machining processes, as these processes incur high initial investment, tooling cost, and operating and maintenance costs. This article presents optimization aspects of an important advanced machining process known as ultrasonic machining (USM). The objective considered is maximization of material removal rate (MRR) subjected to the constraint of surface roughness. The

Ravipudi Venkata Rao; P. J. Pawar; J. P. Davim

2010-01-01

382

Development of generalized 3-D braiding machines for composite preforms  

Microsoft Academic Search

The development of prototype braiding machines for the production of generalized braid patterns is described. Mechanical operating principles and control strategies are presented for two prototype machines which have been fabricated and evaluated. Both machines represent advances over current fabrication techniques for composite materials by enabling nearly ideal control of fiber orientations within preform structures. They permit optimum design of

Cecil O. Huey Jr.; Gary L. Farley

1992-01-01

383

MACHINABILITY OF NICKEL-BASED HIGH TEMPERATURE ALLOYS  

Microsoft Academic Search

Nickel-based high temperature alloys have excellent physical properties, which make them ideal for use in the manufacture of aerospace components. However, they exhibit poor machinability. Though conventional machining in industries is currently being carried out using carbide tools, there is little scope for improving the material removal rate. Machining, being a major operation, needs to be improved in order to

R. Arunachalam; M. A. Mannan

2000-01-01

384

1.8 gigahertz (GHz) digital Low Density Radio Communications Link (LDRCL) Operational Test and Evaluation (OT&E) integration and OT&E operational final test report  

NASA Astrophysics Data System (ADS)

This report contains the results of the Operational Test and Evaluation (OT&E) Integration and OT&E Operational Testing of the Commercial-Off-The-Shelf (COTS) Low Density Radio Communications Link's (LDRCL) 1.8-gigahertz (GHz) digital radio system. The OT&E testing was accomplished by first testing the LDRCL equipment against its equipment specification (FAA-E-2853) and then performing OT&E testing at the key site (Miami, Florida). These tests proved that the 1.8 GHz LDRCL equipment can fulfill its mission in the National Airspace System (NAS)l, and that, it is suitable and effective. Based on the test results, it is concluded that the 1.8 GHz LDRCL equipment is qualified for operational deployment.

Melillo, Michael R.

1994-01-01

385

Portable operating systems for network computers: distributed operating systems support for group communications. Final report, 12 April 1982-31 August 1985  

SciTech Connect

The project Portable Operating Systems for Network Computers that ran from April 1982 until August 1985 saw the creation of an entire distributed operating system (MICROS/SAM2S) for a multiple ethernet system of DEC LSI-11 and Motorola 68000 systems. The modularity, hidden type managers, abstract manager hierarchies, message-oriented drivers, and layered tasks used in the design of the SAM2S operating system allowed the easy porting of the original LSI-11 based system to Motorola 68000 processors and its extension to a plexus of four interconnected thernets. The system was used to explore ways to support efficient communications within groups of processes scattered over many computers, especially in very large networks. This project has carefully delineated different classes of multicast communications within networks and has shown three different efficient ways to implement multicast: host, channel, and tree-based protocols. Only tree multicast is suitably efficient for networks of thousands of computers.

Wittie, L.D.

1985-10-31

386

TOKOPS: Tokamak Reactor Operations Study: The influence of reactor operations on the design and performance of tokamaks with solid-breeder blankets: Final report  

SciTech Connect

Reactor system operation and procedures have a profound impact on the conception and design of power plants. These issues are studied here using a model tokamak system employing a solid-breeder blanket. The model blanket is one which has evolved from the STARFIRE and BCSS studies. The reactor parameters are similar to those characterizing near-term fusion engineering reactors such as INTOR or NET (Next European Tokamak). Plasma startup, burn analysis, and methods for operation at various levels of output power are studied. A critical, and complicating, element is found to be the self-consistent electromagnetic response of the system, including the presence of the blanket and the resulting forces and loadings. Fractional power operation, and the strategy for burn control, is found to vary depending on the scaling law for energy confinement, and an extensive study is reported. Full-power reactor operation is at a neutron wall loading pf 5 MW/m/sup 2/ and a surface heat flux of 1 MW/m/sup 2/. The blanket is a pressurized steel module with bare beryllium rods and low-activation HT-9-(9-C-) clad LiAlO/sub 2/ rods. The helium coolant pressure is 5 MPa, entering the module at 297/sup 0/C and exiting at 550/sup 0/C. The system power output is rated at 1000 MW(e). In this report, we present our findings on various operational scenarios and their impact on system design. We first start with the salient aspects of operational physics. Time-dependent analyses of the blanket and balance of plant are then presented. Separate abstracts are included for each chapter.

Conn, R.W.; Ghoniem, N.M.; Firestone, M.A. (eds.)

1986-09-01

387

A Novel Parallel Reduced Support Vector Machine  

Microsoft Academic Search

\\u000a Support Vector Machine (SVM) has been applied in many classification systems successfully. However, it is restricted to work\\u000a well on the small sample sets. This paper presents a novel parallel reduced support vector machine. The proposed algorithm\\u000a consists of three parts: firstly dividing the training samples into some grids; then training sample subset through density\\u000a clustering; and finally classifying the

Fangfang Wu; Yinliang Zhao; Zefei Jiang

2005-01-01

388

Smart Test Machines  

NASA Technical Reports Server (NTRS)

Vern Wedeven, president of Wedeven Associates, developed the WAM4, a computer-aided "smart" test machine for simulating stress on equipment, based on his bearing lubrication expertise gained while working for Lewis Research Center. During his NASA years from the 1970s into the early 1980s, Wedeven initiated an "Interdisciplinary Collaboration in Tribology," an effort that involved NASA, six universities, and several university professors. The NASA-sponsored work provided foundation for Wedeven in 1983 to form his own company. Several versions of the smart test machine, the WAM1, WAM2, and WAM3, have proceeded the current version, WAM4. This computer-controlled device can provide detailed glimpses at gear and bearing points of contact. WAM4 can yield a three-dimensional view of machinery as an operator adds "what-if" thermal and lubrication conditions, contact stress, and surface motion. Along with NASA, a number of firms, including Pratt & Whitney, Caterpillar Tractor, Exxon, and Chevron have approached Wedeven for help on resolving lubrication problems.

1997-01-01

389

Efficient assembly of threaded molecular machines for sequence-specific synthesis.  

PubMed

We report on an improved strategy for the preparation of artificial molecular machines that can pick up and assemble reactive groups in sequence by traveling along a track. In the new approach a preformed rotaxane synthon is attached to the end of an otherwise fully formed strand of building blocks. This "rotaxane-capping" protocol is significantly more efficient than the "final-step-threading" method employed previously and enables the synthesis of threaded molecular machines that operate on extended oligomer, and potentially polymer, tracks. The methodology is exemplified through the preparation of a machine that adds four amino acid building blocks from a strand in sequence, featuring up to 20-membered ring native chemical ligation transition states. PMID:24678971

De Bo, Guillaume; Kuschel, Sonja; Leigh, David A; Lewandowski, Bartosz; Papmeyer, Marcus; Ward, John W

2014-04-16

390

TOKOPS: Tokamak Reactor Operations Study: The Influence of Reactor Operations on the Design and Performance of Tokamaks with Solid-Breeder Blankets: Final Report.  

National Technical Information Service (NTIS)

Reactor system operation and procedures have a profound impact on the conception and design of power plants. These issues are studied here using a model tokamak system employing a solid-breeder blanket. The model blanket is one which has evolved from the ...

R. W. Conn N. M. Ghoniem M. A. Firestone

1986-01-01

391

Operations and maintenance report on Air Force oil/water separators. Final report, September 1985-August 1986  

SciTech Connect

This report is intended to provide general guidance for the routine operation and maintenance of oil/water separators. The report should help managers and operators to recognize and correct problems affecting the separation process of oil and water. The most common types of gravity separators used by the Air Force are discussed. Other topics include operation guidelines, flow measurements, maintenance service, waste disposal and regulations, sampling and testing, recordkeeping and spill-prevention measures.

Kilroy, M.D.

1986-10-01

392

Hard Machinable Machining of Cobalt Super Alloys  

NASA Astrophysics Data System (ADS)

The article deals with difficult-to-machine cobalt super alloys. The main aim is to test the basic properties of cobalt super alloys and propose suitable cutting materials and machining parameters under the designation 188 when machining. Although the development of technology in chipless machining such as moulding, precision casting and other manufacturing methods continues to advance, machining is still the leading choice for piece production, typical for energy and chemical engineering. Nowadays, super alloys are commonly used in turbine engines in regions that are subject to high temperatures, which require high strength, high temperature resistance, phase stability, as well as corrosion or oxidation resistance.

?ep, Robert; Janásek, Adam; Petr?, Jana; ?epová, Lenka; Sadílek, Marek; Kratochvíl, Ji?í

2012-12-01

393

Investigation for the Flashover Phenomenon in DC Machines  

NASA Astrophysics Data System (ADS)

Although in recent years, large DC machines have gradually been replaced with variable-speed AC machines, many large DC machines are still operating in steel mills. Flashover is still a frequent occurrence and has been ongoing issues since DC machines were first brought into use. In this investigation, flashover experiments were performed using model tests. The sustained voltage of the DC arc was cleared and copper dragging was found to be related to flashover.

Nakanishi, Yuji; Sugimoto, Kensho; Morita, Noboru

394

Lean, Green Energy Controller Machine, Final Report.  

National Technical Information Service (NTIS)

Achieving efficiency improvements and providing demand-response programs have been identified as key elements of our national energy initiative. The residential market is the largest, yet most difficult, segment to engage in efforts to meet these objectiv...

2013-01-01

395

The spring-back phenomenon: does the final position of the nipple areola complex correspond to the pre-operative markings in reduction mammoplasty?  

Microsoft Academic Search

This study investigates whether tissue recoil or patient intrinsic factors influence the final position of the nipple areola\\u000a complex (NAC) after reduction mammoplasty.\\u000a \\u000a The age, pre-operative ptosis, BMI and weight of the tissue resected were recorded as patient intrinsic factors in 37 patients\\u000a undergoing reduction mammoplasty. The “spring-back” value was defined as the distance from the sternal notch to a

Yvette Godwin; Maria del Pilar Schneider

2007-01-01

396

Analytical design of intelligent machines  

NASA Technical Reports Server (NTRS)

The problem of designing 'intelligent machines' to operate in uncertain environments with minimum supervision or interaction with a human operator is examined. The structure of an 'intelligent machine' is defined to be the structure of a Hierarchically Intelligent Control System, composed of three levels hierarchically ordered according to the principle of 'increasing precision with decreasing intelligence', namely: the organizational level, performing general information processing tasks in association with a long-term memory; the coordination level, dealing with specific information processing tasks with a short-term memory; and the control level, which performs the execution of various tasks through hardware using feedback control methods. The behavior of such a machine may be managed by controls with special considerations and its 'intelligence' is directly related to the derivation of a compatible measure that associates the intelligence of the higher levels with the concept of entropy, which is a sufficient analytic measure that unifies the treatment of all the levels of an 'intelligent machine' as the mathematical problem of finding the right sequence of internal decisions and controls for a system structured in the order of intelligence and inverse order of precision such that it minimizes its total entropy. A case study on the automatic maintenance of a nuclear plant illustrates the proposed approach.

Saridis, George N.; Valavanis, Kimon P.

1987-01-01

397

Nontraditional Machining of Beryllium.  

National Technical Information Service (NTIS)

The report deals with electrichemical machining (ECM), chemical milling, and electric-discharge machining (EDM). The general characteristics of these processes and their applications to the processing of beryllium parts are presented and covered in detail...

J. A. Gurklis

1972-01-01

398

Heat load estimation in the duct and blanket module region of the HNB during various operating scenarios of the ITER machine  

NASA Astrophysics Data System (ADS)

The neutral beam heating and current drive system in ITER consists of 3 beam lines (2 present plus one future upgrade) with each beam line designed to deliver 40 A of accelerated deuterium beams at 1 MeV with a 25% duty cycle. The beam line is coupled to the vacuum vessel port of the tokamak through a series of front end components and a connecting duct. The edge of the beam line and the walls of the vacuum vessel up to the blanket aperture are lined with duct liners to protect them from heat loads from the direct and re-ionised beam interception during the transport of the neutral beam. The direct interception of the beam is due to the inherent divergence of the beam or its halo component. The re-ionised beam consists of ions born due to the interaction of the accelerated neutral beam with the back ground gas all along the beam line, after the neutraliser exit. The motion of these ions is also affected by the electric field of the residual ion dump (RID) and the magnetic field from the tokamak during its various phases of operation. A systematic study to assess the heat loads during the neutral beam transport on the different front end components, the various regions of the duct and the blanket modules is necessary to ascertain the proper thermo-mechanical design of these components. The beam transmission code "BTR" has been used for that purpose. Simulations have been carried out of the gas profile along the neutral beam line considering gas flux from the ion source, the neutraliser, the RID (due to the dumped ion beams) and the flow of the gas from the tokamak to the duct. The re-ionisation losses have been estimated to be 13.8 % for the region between the exit of the neutraliser and the blanket module edge. The magnetic fields for the various operating scenarios of the tokamak like the start of the burn (SOB), end of burn (EOB), X point formation (XPF), XPF + 20 s, EOB + disruption have been simulated for the 15 MA DT scenario. The beamlet divergence has been considered to range between 3 - 7 mrad for the main beam component and 30 mrad for the halo fraction which has been taken as 15% of the main beam. The simulations have been performed for the neutral beam axis vertical inclination of 49 mrad with an additional 10 mrad vertical tilt, which is required for off-axis current drive and avoidance of beam excited toroidal Alvèn eigenmodes in the ITER plasma. The results of these simulations will be presented and discussed.

Singh, M. J.; Boilson, D.; Hemsworth, R.; Dlougach, E.; Geli, F.; Chareyre, J.; Urbani, M.; Krylov, A.; Panasenkov, A.; Lisgo, S.; Pitts, R.; Roccella, M.

2013-02-01

399

Setup reduction approaches for machining  

SciTech Connect

Rapid setup is a common improvement approach in press working operations such as blanking and shearing. It has paid major dividends in the sheet metal industry. It also has been a major improvement thrust for high-production machining operations. However, the literature does not well cover all the setup operations and constraints for job shop work. This review provides some insight into the issues involved. It highlights the floor problems and provides insights for further improvement. The report is designed to provide a quick understanding of the issues.

Gillespie, L.K.

1997-04-01

400

Some investigations into the electric discharge machining of hardened tool steel using different electrode materials  

Microsoft Academic Search

Electric discharge machining (EDM), a ‘non-traditional machining process’, has been replacing drilling, milling, grinding and other traditional machining operations and is now a well-established machining option in many manufacturing industries throughout the world. Modern ED machinery is capable of machining geometrically complex or hard material components, that are precise and difficult-to-machine such as heat treated tool steels, composites, super alloys,

Shankar Singh; S. Maheshwari; P. C. Pandey

2004-01-01

401

Chemical Agent Monitor (CAM) follow-on operational test and evaluation simulant test strategy. Final report, May 1988April 1989  

Microsoft Academic Search

This report was intended to provide technical guidance to the U.S. Army Armor and Engineering (A E) Board in the area of simulant use for the Chemical Agent Monitor (CAM) Follow-on Operational Test and Evaluation (FOT E). The Operational Science Branch (Op Sci Br) was requested to support the A E Board in their effort to design an FOT E

A. T. Seitzinger; P. S. Grasso; M. A. Guelta

1990-01-01

402

An Instructional Program on Operation of the Tektronix 545A Oscilloscope. Final Report, February 1964-December 1965.  

ERIC Educational Resources Information Center

A 368-frame programed instruction course in the operation of the Tektronix 545A Oscilloscope, together with a response booklet and an administrator's manual, is contained in the report. The oscilloscope operations taught in the program are: preset and calibration, voltage measurement, frequency measurement, comparison of waveshape to waveshape,…

Woods, Robert H.; And Others

403

YKAe Research programme on nuclear power plant systems behaviour and operational aspects of safety 1990-1994, Final report.  

National Technical Information Service (NTIS)

The research programme on Nuclear Power Plant Systems Behaviour and Operational Aspects of Safety was carried out between 1990 and 1994. In the field of Safe operational margins of nuclear fuel and reactor core, an up-to-date steady-state fuel performance...

L. Mattila T. Vanttola

1995-01-01

404

Estimation of the minimum machining performance in the abrasive waterjet machining using integrated ANN-SA  

Microsoft Academic Search

In this study, Artificial Neural Network (ANN) and Simulated Annealing (SA) techniques were integrated labeled as integrated ANN-SA to estimate optimal process parameters in abrasive waterjet (AWJ) machining operation. The considered process parameters include traverse speed, waterjet pressure, standoff distance, abrasive grit size and abrasive flow rate. The quality of the cutting of machined-material is assessed by looking to the

Azlan Mohd Zain; Habibollah Haron; Safian Sharif

2011-01-01

405

Pre-operative variables affecting final vision outcome with a critical review of ocular trauma classification for posterior open globe (zone III) injury  

PubMed Central

Purpose: To identify pre-operative variables affecting the outcome of posterior open globe (zone III) injuries. Secondary objective was to re-look at the definition or landmarks for zone III injury and its clinical significance for predicting visual prognosis following open globe injury. Materials and Methods: Retrospective review of medical records of all hospitalized patients with surgical repair of open globe injury over last 10 years at a tertiary referral eye care center in Singapore. Out of 172 eyes with open globe injury, 28 eyes (16.3%) with zone III injury was identified and reviewed further. Pre-operative visual acuity (VA) and other variables, extent of scleral wound in reference to rectus insertion, relative afferent pupillary defect (RAPD) and final vision outcome were recorded. Results: Median age was 37 years with male predilection (92.9%). Mean follow-up was 12.9 months. Pre-operative VA was no light perception (NLP) in 16 (57.1%) eyes. Final VA remained NLP in 14 eyes (50.0%). The factors contributing to poor post-operative vision based on univariate regression analysis were the presence of RAPD, poor pre-operative VA, blunt trauma, extent of trauma, associated traumatic cataract, hyphema, vitreous loss and associated vitreo-retinal trauma. Further on, zone III injuries with scleral wound limited anterior to rectus insertion (6 eyes) had better vision outcome than those with injuries extending beyond rectus insertion (22 eyes). Conclusion: Initial VA, blunt ocular trauma, visual axis involvement, loss of light perception, presence of RAPD, traumatic cataract, hyphema, vitreous loss were the important determinants for final visual outcome in patients with zone III injury. Wound extending posterior to rectus insertion has poorer outcome as those limited anterior to rectus insertion. We suggest that there may be a need to relook at zone III injuries with reference to rectus insertion for prognostic significance, and further studies are warranted.

Agrawal, Rupesh; Ho, Sue Wei; Teoh, Stephen

2013-01-01

406

The Advantage of Machines  

NSDL National Science Digital Library

In this lesson, students learn about work as defined by physical science and see that work is made easier through the use of simple machines. Already encountering simple machines everyday, students will be learn about their widespread uses in improving everyday life. This lesson serves as the starting point for the Simple Machines Unit.

Integrated Teaching And Learning Program

407

Holland Roller Windmill: Investigation and Demonstration of Principles. Final Report.  

National Technical Information Service (NTIS)

A horizontal axis wind power machine using a radially positioned spinning cylindrical roller was investigated and a demonstration machine was constructed and operated in the natural wind. Earlier wind machines using the Magnus rotor were reviewed, such as...

R. Holland

1981-01-01

408

Autocalibration of an SMT machine by machine vision  

Microsoft Academic Search

An SMT machine has many working coordinate frames—the fiducial mark camera frame, component camera frame, machine table frame, PCB frame, and reference frame. Because of many influences such as mechanical dimension errors, machine assembling errors, and camera lens distortions, all frames on the SMT machine must be calibrated to compensate for these machine errors. This paper applies machine vision techniques

C.-L. Shih; C.-W. Ruo

2005-01-01

409

Development of an Electronically-Scanned Pressure Module for Operation at Cryogenic Temperatures. Final Report, Period Ending September 1986.  

National Technical Information Service (NTIS)

Pressure and temperature characteristics were measured for a number of multichannel electronically scanned pressure sensors. The tests were made on commercially available units designed to operate in a controlled temperature environment. Measurements of z...

P. B. Johnson R. L. Ash

1988-01-01

410

Assessment of PEA's Operational Efficiency: 1. Corporate Planning (CP) Study, Appendix A. Corporate Strategy Formulation. Final Report.  

National Technical Information Service (NTIS)

This study, conducted by Southern Electric International, was funded by the U.S. Trade and Develoment Agency. The report assesses the operational efficiency of the Provincial Electricity Authority in Bangkok, Thailand. Volume 3 is composed of Appendix A: ...

1997-01-01

411

Final Environmental Impact Statement/Environment Impact Report. Truckee River Operating Agreement: Economics and Recreation Appendix. Volume 2.  

National Technical Information Service (NTIS)

The overall objective of this paper is to develop an economic impact model for estimating the economic effects from alternatives considered in the Truckee River Operating Agreement (TROA) Environmental Impact (EIS) and the Water Quality Settlement (WQSA) ...

K. McArthur R. Mead T. D. Darden T. R. Harris

2008-01-01

412

EERF (Eastern Environmental Radiation Facility) standard operating procedures for radon-222 measurement using charcoal canisters. Final report  

SciTech Connect

This report describes in detail EPA's office of Radiation Programs Eastern Environmental Radiation Facility's standard operating procedures for radon-222 measurement using charcoal canisters. It lists the materials and equipment that are used and explains their laboratory and survey methods.

Gray, D.J.; Windham, S.T.

1987-06-01

413

Demonstration of Surfactant-Enhanced Aquifer Remediation of Chlorinated Solvent DNAPL at Operable Unit 2, Hill AFB, Utah, Draft Final.  

National Technical Information Service (NTIS)

During 1996 and 1997, five separate partitioning interwell tracer tests (PITTs) were conducted as part of two separate surfactant-enhanced aquifer remediation (SEAR) demonstrations targeting DNAPL (primarily TCE) at Operable Unit 2 (OU2), Hill Air Force B...

1997-01-01

414

Error correction of the DEA (Digital Electronic Automation) Coordinate Measuring Machines at LLNL.  

National Technical Information Service (NTIS)

LLNL uses Coordinate Measuring Machines (CMM) manufactured by Digital Electronic Automation, Inc. (DEA) to provide in-process and final measurements of various components as they are assembled and aligned for later experimentation. The machines achieve th...

D. L. Carter

1989-01-01

415

HUMAN MACHINE COOPERATIVE TELEROBOTICS  

SciTech Connect

The remediation and deactivation and decommissioning (D&D) of nuclear waste storage tanks using telerobotics is one of the most challenging tasks faced in environmental cleanup. Since a number of tanks have reached the end of their design life and some of them have leaks, the unstructured, uncertain and radioactive environment makes the work inefficient and expensive. However, the execution time of teleoperation consumes ten to hundred times that of direct contact with an associated loss in quality. Thus, a considerable effort has been expended to improve the quality and efficiency of telerobotics by incorporating into teleoperation and robotic control functions such as planning, trajectory generation, vision, and 3-D modeling. One example is the Robot Task Space Analyzer (RTSA), which has been developed at the Robotics and Electromechanical Systems Laboratory (REMSL) at the University of Tennessee in support of the D&D robotic work at the Oak Ridge National Laboratory and the National Energy Technology Laboratory. This system builds 3-D models of the area of interest in task space through automatic image processing and/or human interactive manual modeling. The RTSA generates a task plan file, which describes the execution of a task including manipulator and tooling motions. The high level controller of the manipulator interprets the task plan file and executes the task automatically. Thus, if the environment is not highly unstructured, a tooling task, which interacts with environment, will be executed in the autonomous mode. Therefore, the RTSA not only increases the system efficiency, but also improves the system reliability because the operator will act as backstop for safe operation after the 3-D models and task plan files are generated. However, unstructured conditions of environment and tasks necessitate that the telerobot operates in the teleoperation mode for successful execution of task. The inefficiency in the teleoperation mode led to the research described as Human Machine Cooperative Telerobotics (HMCTR). The HMCTR combines the telerobot with robotic control techniques to improve the system efficiency and reliability in teleoperation mode. In this topical report, the control strategy, configuration and experimental results of Human Machines Cooperative Telerobotics (HMCTR), which modifies and limits the commands of human operator to follow the predefined constraints in the teleoperation mode, is described. The current implementation is a laboratory-scale system that will be incorporated into an engineering-scale system at the Oak Ridge National Laboratory in the future.

William R. Hamel; Spivey Douglass; Sewoong Kim; Pamela Murray; Yang Shou; Sriram Sridharan; Ge Zhang; Scott Thayer; Rajiv V. Dubey

2003-06-30

416

Edheads: The Compound Machine  

NSDL National Science Digital Library

This resource is a collection of interactive animations designed to help kids learn how forces and simple machines can work together to create the compound machine. Child-centered animated activities enhance understanding of how compound machines function and how they are differentiated from simple machines. Additionally the site includes a glossary of important terms, lesson plans, a teacher's guide and information about professionals who work with compound machines. This page is part of a larger collection of animated education resources for the elementary level.

2007-09-18

417

Man/Machine Interaction Dynamics And Performance (MMIDAP) capability  

NASA Technical Reports Server (NTRS)

The creation of an ability to study interaction dynamics between a machine and its human operator can be approached from a myriad of directions. The Man/Machine Interaction Dynamics and Performance (MMIDAP) project seeks to create an ability to study the consequences of machine design alternatives relative to the performance of both machine and operator. The class of machines to which this study is directed includes those that require the intelligent physical exertions of a human operator. While Goddard's Flight Telerobotic's program was expected to be a major user, basic engineering design and biomedical applications reach far beyond telerobotics. Ongoing efforts are outlined of the GSFC and its University and small business collaborators to integrate both human performance and musculoskeletal data bases with analysis capabilities necessary to enable the study of dynamic actions, reactions, and performance of coupled machine/operator systems.

Frisch, Harold P.

1991-01-01

418

Building a Successful Machine Safeguarding Program  

SciTech Connect

Safeguarding hazards associated with machines is a goal common to all health and safety professionals. Whether the individual is new to the safety field or has held associated responsibilities for a period of time, safeguarding personnel who work with or around machine tools and equipment should be considered an important aspect of the job. Although significant progress has been made in terms of safeguarding machines since the era prior to the organized safety movement, companies continue to be cited by the Occupational Safety and Health Administration (OSHA) and workers continue to be injured, even killed by machine tools and equipment. In the early 1900s, it was common practice to operate transmission machinery (gears, belts, pulleys, shafting, etc.) completely unguarded. At that time, the countersunk set screw used on shafting had not been invented and projecting set screws were involved in many horrific accidents. Manufacturers built machines with little regard for worker safety. Workers were killed or seriously injured before definitive actions were taken to improve safety in the workplace. Many states adopted legislation aimed at requiring machine guarding and improved injury reduction. The first patent for a machine safeguard was issued in 1868 for a mechanical interlock. Other patents followed. As methods for safeguarding machinery and tools were developed, standards were written and programs were set up to monitor factories for compliance. Many of those standards continue to govern how we protect workers today. It is common to see machine tools built in the forties, fifties and sixties being used in machine shops today. In terms of safeguarding, these machines may be considered poorly designed, improperly safeguarded or simply unguarded. In addition to the potential threat of an OSHA citation, these conditions expose the operator to serious hazards that must be addressed. The safety professional can help line management determine workable solutions for these problems.

McConnell, S

2003-03-06

419

Administrative simplification: adoption of operating rules for eligibility for a health plan and health care claim status transactions. Interim final rule with comment period.  

PubMed

Section 1104 of the Administrative Simplification provisions of the Patient Protection and Affordable Care Act (hereafter referred to as the Affordable Care Act) establishes new requirements for administrative transactions that will improve the utility of the existing HIPAA transactions and reduce administrative costs. Specifically, in section 1104(b)(2) of the Affordable Care Act, Congress required the adoption of operating rules for the health care industry and directed the Secretary of Health and Human Services to "adopt a single set of operating rules for each transaction * * * with the goal of creating as much uniformity in the implementation of the electronic standards as possible." This interim final rule with comment period adopts operating rules for two Health Insurance Portability and Accountability Act of 1996 (HIPAA) transactions: eligibility for a health plan and health care claim status. This rule also defines the term "operating rules" and explains the role of operating rules in relation to the adopted transaction standards. In general, transaction standards adopted under HIPAA enable electronic data interchange through a common interchange structure, thus minimizing the industry's reliance on multiple formats. Operating rules, in turn, attempt to define the rights and responsibilities of all parties, security requirements, transmission formats, response times, liabilities, exception processing, error resolution and more, in order to facilitate successful interoperability between data systems of different entities. PMID:21739765

2011-07-01

420

The Monitoring of Machines Surveillance des Machines.  

National Technical Information Service (NTIS)

The application of classical vibration analysis to the surveillance of the mechanical condition of machines is described. Automated procedures handled by specialized computers, using advanced signal processing techniques, are sought. Vibration measurement...

M. Gaillochet

1980-01-01

421

Passively operated spool valve for drain-down freeze protection of thermosyphon water heaters. Final technical report  

SciTech Connect

The work done to extend the existing drain-down valve technology to provide passive drain-down freeze protection for thermosyphon-based solar water heaters is described. The basic design of the existing valve model is that of a spool valve, employing a cylindrical spool which moves axially in a mating cartridge to open and close o-rings at the two operating extremes (drain and operate) to perform the valving function. Three passive actuators to drive the basic valving mechanism were designed, fabricated, and tested. Two piping configurations used to integrate the spool valve with the thermosyphon system are described, as are the passive actuators. The three actuator designs are: photovoltaic driven, refrigerant-based bellows, and heat motor cable-drive designs. Costs are compared for the alternative actuator designs, and operating characteristics were examined for the thermosyphon system, including field tests. The market for the valve for thermosyphon systems is then assessed. (LEW)

None

1982-04-30

422

Construction and operation of a prototype RESOX plant in conjunction with Bergbau-Forschung FGD system. Final report  

SciTech Connect

This report describes work done on an EPRI sponsored program intended to evaluate a dry FGD system. The program combined an existing Bergbau-Forschung activated coke SO/sub 2/ regenerative adsorption plant with the Foster Wheeler RESOX process. This process reduces concentrated SO/sub 2/ from the adsorption plant regenerator to elemental sulfur using coal as a reactant. The front end adsorption plant operates with a 43MW slip stream from the Kellerman Power Station located in Luenen, Germany. The EPRI funded program designed, built and tested the RESOX system in conjunction with operation of the Bergbau-Forschung FGD plant. Throughout the report mechanical performance aspects of the program are emphasized. The RESOX system processed SO/sub 2/ rich gas for an accumulated total of 1000 hours. Experience gained during this operation is discussed.

Pickering, H.C. Jr.; Raskin, N.

1982-07-01

423

Detecting single-nucleotide polymorphism by single-nucleotide polymorphism interactions in rheumatoid arthritis using a two-step approach with machine learning and a Bayesian threshold least absolute shrinkage and selection operator (LASSO) model.  

PubMed

The objective of this study was to detect interactions between relevant single-nucleotide polymorphisms (SNPs) associated with rheumatoid arthritis (RA). Data from Problem 1 of the Genetic Analysis Workshop 16 were used. These data consisted of 868 cases and 1,194 controls genotyped with the 500 k Illumina chip. First, machine learning methods were applied for preselecting SNPs. One hundred SNPs outside the HLA region and 1,500 SNPs in the HLA region were preselected using information-gain theory. The software weka was used to reduce colinearity and redundancy in the HLA region, resulting in a subset of 6 SNPs out of 1,500. In a second step, a parametric approach to account for interactions between SNPs in the HLA region, as well as HLA-nonHLA interactions was conducted using a Bayesian threshold least absolute shrinkage and selection operator (LASSO) model incorporating 2,560 covariates. This approach detected some main and interaction effects for SNPs in genes that have previously been associated with RA (e.g., rs2395175, rs660895, rs10484560, and rs2476601). Further, some other SNPs detected in this study may be considered in candidate gene studies. PMID:20018057

González-Recio, Oscar; de Maturana, Evangelina López; Vega, Andrés T; Engelman, Corinne D; Broman, Karl W

2009-01-01

424

Linked state machines: speed independent design. Volume 4  

SciTech Connect

Necessary and sufficient conditions are developed for the speed independent operation of a linked state machine (LSM) that consists of one elementary state machine (ESM). Sufficient conditions for the speed independent operation of an LSM that consists of two ESMs are also developed. Any LSM that consists of one ESM is characterized by its digraph in which each vertex corresponds to an LSM state, and each edge corresponds to a state-to-state transition. An LSM is defined to be speed independent if there exists no vertex in its digraph from which paths lead to distinct sinks. A sink of a digraph is a strongly connected subgraph from which no arc is directed outward. The rationale behind speed independent design of LSMs is to allow non-deterministic behavior in which the ESMs that comprise the LSM can have concurrent operation and in which the ESMs reach, from each initial state, a corresponding set of final states (a sink). 3 refs., 6 figs.

Knudsen, H.K.

1985-04-01

425

[Research on infrared safety protection system for machine tool].  

PubMed

In order to ensure personal safety and prevent injury accident in machine tool operation, an infrared machine tool safety system was designed with infrared transmitting-receiving module, memory self-locked relay and voice recording-playing module. When the operator does not enter the danger area, the system has no response. Once the operator's whole or part of body enters the danger area and shades the infrared beam, the system will alarm and output an control signal to the machine tool executive element, and at the same time, the system makes the machine tool emergency stop to prevent equipment damaged and person injured. The system has a module framework, and has many advantages including safety, reliability, common use, circuit simplicity, maintenance convenience, low power consumption, low costs, working stability, easy debugging, vibration resistance and interference resistance. It is suitable for being installed and used in different machine tools such as punch machine, pour plastic machine, digital control machine, armor plate cutting machine, pipe bending machine, oil pressure machine etc. PMID:18619302

Zhang, Shuan-Ji; Zhang, Zhi-Ling; Yan, Hui-Ying; Wang, Song-De

2008-04-01

426

Environmental review guide for operations (ERGO) supplement for the environmental assessment and management (TEAM) guide. Final report  

Microsoft Academic Search

The number of environmental laws and regulations have continued to grow in the United States, making compliance with these regulations increasingly difficult. Environmental assessments became a way to determine operational consistency and compliance with current environmental regulations. Beginning in 1989, the U.S. Army Construction Engineering Research Laboratories (USACERL) and a U.S. Army Corps of Engineers (USACE) steering committee began the

Schell

1994-01-01

427

Final 2008 Annual Adaptive Management Report for the Carlsbad Project Water Operations and Water Supply Conservation Environmental Impact Statement.  

National Technical Information Service (NTIS)

This report covers the period January 1, 2008 through the end of the calendar year December 31, 2008 as stated in the Carlsbad Project Water Operations and Water Supply Conservation EIS, June 1, 2006. This report describes the actual Adaptive Management P...

2009-01-01

428

Practical methods to integrate load management into normal operations of power system control centers: Volume 2, Appendixes: Final report  

Microsoft Academic Search

The number of utility load management installations has increased markedly in recent years - from less than 50 in 1979 to 259 in 1985. Case studies using Florida Power and Light data show that the decision-support software developed in this study can save time and effort in integrating load management into power system operations. This volume contains all the backup

M. L. Chan; F. Albuyeh; D. Imamura; G. Mesbah

1986-01-01

429

Site selection and design for minimizing pollution from underground coal mining operations. Final report June 1974December 1976  

Microsoft Academic Search

The objectives of this study were to determine how best to select a layout and mining system and also to develop and operate an underground coal mine while at the same time minimizing pollution of the environment. The pre-mining environment was assessed by sampling Cedar Creek 3 and other streams. Analyses of samples of groundwater into the mine, of the

R. Q. Shotts; E. Sterett; T. A. Simpson

1978-01-01

430

Development and use of the coal-fired central energy plant operations expert system (CEPES). Final report  

Microsoft Academic Search

Rising operation and maintenance (OM) costs of central heating plants have forced the Army to seek alternative methods of running these facilities. Computer technology offers a great potential to automate and assist in many OM tasks by helping to diagnose equipment malfunctions and failures. An automated diagnostic tool for coal-fired central heating plant equipment could reduce the demand for human

R. Moshage; T. Magliero; R. Lorand; M. Kantamnemi; T. Blindt

1993-01-01

431

Instructor/Operator Station Design Handbook for Aircrew Training Devices. Final Technical Report for Period March 1982-December 1986.  

ERIC Educational Resources Information Center

Human engineering guidelines for the design of instructor/operator stations (IOSs) for aircrew training devices are provided in this handbook. These guidelines specify the preferred configuration of IOS equipment across the range of the anticipated user sizes and performance capabilities. The guidelines are consolidated from various human…

Warner, H. D.

432

Virtual machine performance benchmarking.  

PubMed

The attractions of virtual computing are many: reduced costs, reduced resources and simplified maintenance. Any one of these would be compelling for a medical imaging professional attempting to support a complex practice on limited resources in an era of ever tightened reimbursement. In particular, the ability to run multiple operating systems optimized for different tasks (computational image processing on Linux versus office tasks on Microsoft operating systems) on a single physical machine is compelling. However, there are also potential drawbacks. High performance requirements need to be carefully considered if they are to be executed in an environment where the running software has to execute through multiple layers of device drivers before reaching the real disk or network interface. Our lab has attempted to gain insight into the impact of virtualization on performance by benchmarking the following metrics on both physical and virtual platforms: local memory and disk bandwidth, network bandwidth, and integer and floating point performance. The virtual performance metrics are compared to baseline performance on "bare metal." The results are complex, and indeed somewhat surprising. PMID:21207096

Langer, Steve G; French, Todd

2011-10-01

433

Monitoring and decision making by people in man machine systems  

NASA Technical Reports Server (NTRS)

The analysis of human monitoring and decision making behavior as well as its modeling are described. Classic and optimal control theoretical, monitoring models are surveyed. The relationship between attention allocation and eye movements is discussed. As an example of applications, the evaluation of predictor displays by means of the optimal control model is explained. Fault detection involving continuous signals and decision making behavior of a human operator engaged in fault diagnosis during different operation and maintenance situations are illustrated. Computer aided decision making is considered as a queueing problem. It is shown to what extent computer aids can be based on the state of human activity as measured by psychophysiological quantities. Finally, management information systems for different application areas are mentioned. The possibilities of mathematical modeling of human behavior in complex man machine systems are also critically assessed.

Johannsen, G.

1979-01-01

434

A Synthetic Ester as an Optimal Cutting Fluid for Minimal Quantity Lubrication Machining  

Microsoft Academic Search

Significant progress has been made in dry and semidry machining recently, and minimal quantity lubrication (MQL) machining in particular has been accepted as a successful semidry application because of its environmentally friendly characteristics. A number of studies have shown that MQL machining can show satisfactory performance in practical machining operations. However, there has been little investigation of the cutting fluids

S. Suda; H. Yokota; I. Inasaki; T. Wakabayashi

2002-01-01

435

Towards a haptic virtual coordinate measuring machine  

Microsoft Academic Search

In this paper, a novel coordinate measuring machine (CMM) inspection path planning environment, named haptic virtual coordinate measuring machine (HVCMM), is proposed, which makes use of haptic modeling technique for CMM off-line programming. HVCMM is an accurate model of real CMM, simulating a CMM’s operation and its measurement process in a virtual environment with haptic perception. It enables CMM off-line

Y. H Chen; Y. Z Wang; Z. Y Yang

2004-01-01

436

Design and market considerations for axial flux superconducting electric machine design  

NASA Astrophysics Data System (ADS)

In this paper, the authors investigate a number of design and market considerations for an axial flux superconducting electric machine design that uses high temperature superconductors. The axial flux machine design is assumed to utilise high temperature superconductors in both wire (stator winding) and bulk (rotor field) forms, to operate over a temperature range of 65-77 K, and to have a power output in the range from 10s of kW up to 1 MW (typical for axial flux machines), with approximately 2-3 T as the peak trapped field in the bulk superconductors. The authors firstly investigate the applicability of this type of machine as a generator in small- and medium-sized wind turbines, including the current and forecasted market and pricing for conventional turbines. Next, a study is also carried out on the machine's applicability as an in-wheel hub motor for electric vehicles. Some recommendations for future applications are made based on the outcome of these two studies. Finally, the cost of YBCO-based superconducting (2G HTS) wire is analysed with respect to competing wire technologies and compared with current conventional material costs and current wire costs for both 1G and 2G HTS are still too great to be economically feasible for such superconducting devices.

Ainslie, M. D.; George, A.; Shaw, R.; Dawson, L.; Winfield, A.; Steketee, M.; Stockley, S.

2014-05-01

437

Mining machine orientation using inertial, magnetic, and gravitational sensors  

Microsoft Academic Search

An onboard navigation system is under investigation for mining machines. The system is intended for use in autonomous mining operations. The system provides heading information using a gyroscope, two flux-gate sensors, and clinometers. Testing has shown that the flux-gate sensors exhibit a static error when mounted on the mining machine. Recalibration of the sensor improved this situation. The gyroscope operated

J. J. Sammarco

1988-01-01

438

[Operation/Maintenance of Fiber Placement Machine  

NASA Technical Reports Server (NTRS)

NASA contract NAS8-39749 was completed in January 2000. The contract period of performance covered six (6) years and included basic program technical support as required by NASA with up to thirty (30) different technical directives identified and issued by NASA for specific Advanced Composite Technology tasks during the course of the contract.

Pelham, L.; Dillard, T.

2000-01-01

439

Transfer of control skill by machine learning  

Microsoft Academic Search

Controlling complex dynamic systems requires skills that operators often cannot completely describe, but can demonstrate. This paper is concerned with the problem of transferring human control skill to an automatic controller. The process of reconstructing a skill from an operator's behavioural traces by means of machine learning (ML) techniques is called “behavioural cloning”. The paper gives a review of ML

Tanja Urban?i?

1997-01-01

440

Effects of operating Mt. Elbert pumped-storage powerplant on Twin Lakes, Colorado: 1982 report of findings. Final report  

SciTech Connect

A series of studies is being performed to identify and quantify changes that occur in the aquatic ecology of Twin Lakes, Colorado, because of the Mt. Elbert Pumped-Storage Powerplant, which began operation in September 1981. The report presents results of studies done is 1982. These results, along with those from studies presently being done, will be compared with results from preoperational limnology studies at Twin Lakes from 1971 through 1981.

LaBounty, J.F.; Sartoris, J.J.; Lieberman, D.M.

1984-09-01

441

R&D on an Ultra-Thin Composite Membrane for High-Temperature Operation in PEMFC. Final Report  

Microsoft Academic Search

FuelCell Energy developed a novel high-temperature proton exchange membrane for PEM fuel cells for building applications. The laboratory PEM fuel cell successfully operated at 100-400{supdegree}C and low relative humidity to improve CO tolerance, mitigate water and thermal management challenges, and reduce membrane cost. The developed high-temperature membrane has successfully completed 500h 120C endurance testing.

Yuh

2003-01-01

442

Monitored Natural Attenuation Remedial Action Work Plan for Test Area North Final Groundwater Remediation, Operable Unit 1 -07B  

Microsoft Academic Search

ABSTRACT This Remedial Action Work Plan identifies the approach and requirements for implementing,monitored natural attenuation as the distal zone remedy for Test Area North, Operable Unit 1 -07B at the Idaho National Engineering and Environmental Laboratory. This remedy is being implemented,in concert with in situ bioremediation as the remedy for the hot spot, and pump-and-treat is being implemented as the

Brennon R. Orr; Joseph S. Rothermel; Aran T. Armstrong

443

R&D on an Ultra-Thin Composite Membrane for High-Temperature Operation in PEMFC. Final Report  

SciTech Connect

FuelCell Energy developed a novel high-temperature proton exchange membrane for PEM fuel cells for building applications. The laboratory PEM fuel cell successfully operated at 100-400{supdegree}C and low relative humidity to improve CO tolerance, mitigate water and thermal management challenges, and reduce membrane cost. The developed high-temperature membrane has successfully completed 500h 120C endurance testing.

Yuh, C.-Y.

2003-10-06

444

Testing fluidized bed incinerators for energy-efficient operation for the Southtowns Sewage Treatment Agency. Final report  

SciTech Connect

Two methods for improving the energy efficiency of fluidized bed sludge incinerators were evaluated. The first method used paper pulp and polymer as conditioning agents for municipal sludge instead of lime and ferric chloride. Automatic control of the incinerator was the second method evaluated for energy savings. To evaluate the use of paper pulp and polymer as conditioning agents, varying quantities of paper pulp were added to the liquid sludge to determine the optimal sludge-to-paper pulp ratio. The effect of the paper pulp and polymer-conditioned sludge on plant operations also was evaluated. When compared to sludge conditioned with lime and ferric chloride, the paper pulp and polymer-conditioned sludge had similar cake release and feed characteristics, higher BTU values for the dry sludge solids, required less auxiliary fuel for incineration, and generated less ash for disposal. The paper pulp and polymer did not have any appreciable negative effects on the operation of the wastewater treatment plant. It was estimated that processing and incinerating the sludge conditioned with paper pulp and polymer resulted in a cost savings of up to $91.73 per dry ton of activated sludge solids. To evaluate the effect of automatic control, all the incinerator operating parameters including air flow rates, fuel oil feed rates, and sludge feed rates, were automatically monitored and controlled to minimize auxiliary fuel oil use and to keep the incinerator running at optimal conditions. Although effective, the estimated cost savings for automatic control of the incinerator were small.

NONE

1996-01-01

445

Hazard and operability study of an ethylene oxide sterilizer for National Institute for Occupational Safety and Health. Final report  

SciTech Connect

A hazard and operability (HAZOP) study was conducted on a sterilizer supplied by compressed gas cylinders of ethylene-oxide (EtO). The sterilizer installation, equipment, and operational procedures were reviewed, and recommendations were developed both specifically for the studied installation and for the generic installation. The sterilizer consisted of a jacketed chamber and associated pumps, pipes, filters, valves and other equipment. Sterilizer facility design, sterilizer equipment design, leak monitoring, system utilities, equipment maintenance, and operational procedures were discussed. These recommendations should provide guidance to hospitals installing EtO sterilizers. The study also showed how the HAZOP study procedures which are typically used in large chemical facilities can be used on a small scale setting. The HAZOP study involved evaluating the facility as a series of systems. Log sheets of information gathered were included in the report. A process diagram of an EtO sterilizer was included along with a schematic of EtO piping from tanks to sterilizer, a schematic of EtO sample line, calibration gas line, and carrier gas line, and schematics of the air inlet line to chamber and the piping from EtO tank to supply valve.

Not Available

1988-12-01

446

Machine tool locator  

DOEpatents

Machine tools can be accurately measured and positioned on manufacturing machines within very small tolerances by use of an autocollimator on a 3-axis mount on a manufacturing machine and positioned so as to focus on a reference tooling ball or a machine tool, a digital camera connected to the viewing end of the autocollimator, and a marker and measure generator for receiving digital images from the camera, then displaying or measuring distances between the projection reticle and the reference reticle on the monitoring screen, and relating the distances to the actual position of the autocollimator relative to the reference tooling ball. The images and measurements are used to set the position of the machine tool and to measure the size and shape of the machine tool tip, and examine cutting edge wear. patent

Hanlon, John A. (Los Alamos, NM); Gill, Timothy J. (Stanley, NM)

2001-01-01

447

Straightening-stretching machine  

SciTech Connect

A straightening-stretching machine has been designed at the All Union Design and Research Institute for Chemical Engineering. It straightens metal strips in the cold state by stretching beyond their limit with a maximum extension deformation of 3%. A sketch indicates stand, drive for untwisting strip, power cylinder, slide block, and front clamping head, among other aspects of the machine. The technical characteristics are specified and the process is explained. The economy affected on introducing the straightening-stretching machine is indicated.

Deryabin, G.N.; Kuz'min, G.G.

1983-07-01

448

Edheads: Simple Machines  

NSDL National Science Digital Library

This interactive Flash activity invites kids to learn about simple and compound machines by investigating common household objects found in the kitchen and tool shed. The animated activities help them understand how the machines work and how to differentiate the various types of simple machine. Additionally the site provides a glossary of important terms, lesson plans and a teacher's guide. This page is part of a larger collection of game-like animations developed to teach children about science.

2007-08-16

449

Machining: An Introduction  

NSDL National Science Digital Library

Basic machining processes are introduced on this site that is devoted to engineering fundamentals. Descriptions and illustrations of drilling, turning, grinding, and other common processes are provided for people with little to no prior machining knowledge. A waterjet is a non-traditional machining technology that uses high pressure streams of water with abrasive additives rather than solid cutting instruments to slice through metal and other materials.

2008-04-23

450

9. VIEW OF MILLING AND LATHE MACHINES, MILLING AND LATHE ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

9. VIEW OF MILLING AND LATHE MACHINES, MILLING AND LATHE MACHINES WERE USED TO FORM COMPONENTS INTO THEIR FINAL SHAPE. IN THE FOUNDRY, ENRICHED URANIUM WAS CAST INTO SPHERICAL SHAPES OR INGOT FROM WHICH WEAPONS COMPONENTS WERE FABRICATED. (4/4/66) - Rocky Flats Plant, General Manufacturing, Support, Records-Central Computing, Southern portion of Plant, Golden, Jefferson County, CO

451

MACHINE LEARNING TECHNIQUES FOR BRAIN-COMPUTER INTERFACES  

Microsoft Academic Search

This review discusses machine learning methods and their application to Brain-Computer Interfacing. A particular fo- cus is placed on feature selection. We also point out com- mon flaws when validating machine learning methods in the context of BCI. Finally we provide a brief overview on the Berlin-Brain Computer Interface (BBCI).

K.-R. Müller; M. Krauledat; G. Dornhege; G. Curio; B. Blankertz

2004-01-01

452

An Automatic Washing Machine to Remove Aluminum From Astronomical Mirrors  

NASA Astrophysics Data System (ADS)

Cleaning of large astronomical mirrors, before aluminization, required in the past a large amount of manual operations on the surface. With very large mirrors, 8 meter or more, manual operations become time consuming, expensive and often dangerous, both for mirror surface and operators. A fully automated procedure is thus mandatory when handling large mirrors. To this aim we experimented on a small scale (60 cm) an automatic procedure, free from any manual contact with the mirror, capable of removing old aluminum and leaving a clean, wet surface ready for a successful new aluminization. First we manually treated small borosilicate mirrors, obtained from the LBT primary mirror glass batch, with different sequences of chemicals, commonly used to this purpose. These small mirrors were checked with a Wyko interferometer before and after treating, to trace change in roughness of the surface. Quality and stability of the new aluminum deposition after cleaning was also checked. The washing machine prototype is composed by a water proof box on rigid PVC with a moving arm, a pump and a series of tanks containing the used chemicals. All the adopted components can be used with acids and other corrosive fluids. The machine is designed to hold the mirror in vertical position. An arm with 10 cm spaced nozzles moves up and down in front of the mirror spraying the adopted chemicals in a defined sequence. A pump forces the liquid through the circuit. After the washing, the mirror is left, protected from the dust in the washing machine, for about 2 hours to drip the water, then is moved into the vacuum pump to check the final result of aluminizing the cleaned surface. A homogeneous layer of aluminum follows only after a careful cleaning, otherwise a fast oxidize process, or a inhomogeneous aluminum coating appear. Scaling times, fluxes and costs from this experiment to large size mirrors leads to realistic, affordable figures.

Zitelli, Valentina

453

Supporting evaluation for the proposed plan for final remedial action for the groundwater operable unit at the chemical plant area of the Weldon Spring Site, Weldon Spring, Missouri.  

SciTech Connect

This report presents the technical information developed since the interim record of decision (IROD) was issued in September 2000 (U.S. Department of Energy [DOE] 2000). The information was incorporated into the evaluation that was performed in selecting the preferred alternative for the Chemical Plant groundwater operable unit (GWOU) of the Weldon Spring site. The contaminants of concern (COCs) in groundwater and springs are trichloroethylene (TCE), nitrate, uranium, and nitroaromatic compounds. The preferred alternative of monitored natural attenuation (MNA) coupled with institutional controls (ICs) and contingency activities is described in the ''Proposed Plan (PP) for Final Remedial Action for the Groundwater Operable Unit at the Chemical Plant Area of the Weldon Spring Site, Weldon Spring, Missouri'' (DOE 2003b).

NONE

2003-08-06

454

Translators and Machines--Can They Cooperate?  

ERIC Educational Resources Information Center

Discusses fundamental questions about the nature of machine translation and outlines its history. Also describes an experiment in cooperative translation called ITS (Interactive Translation System), evaluating the system's capabilities and predicting future developments. Finally, offers suggestions for translators interested in preparing to use…

Melby, Alan K.

1981-01-01

455

Controlled Language for Multilingual Machine Translation  

Microsoft Academic Search

In this paper, we present an overview of the issues in designing a controlled language, the implementation of a controlled language checker, and the deployment of KANT Con- trolled English for multilingual machine translation. We also discuss some success criteria for introducing controlled language. Finally, future vision of KANT controlled language development is discussed.

Teruko Mitamura

1999-01-01

456

Rosie - mobile robot worksystem for decommissioning and dismantling operations. Final report, April 1, 1996--January 31, 1997  

SciTech Connect

RedZone Robotics, Inc. has undertaken development of an advanced remote worksystem - Rosie - specifically designed to meet the challenges of performing a wide range of decontamination and dismantlement (D&D) operations in nuclear environments. The Rosie worksystem includes a locomotor, heavy manipulator, operator console, and control system for remote operations. The locomotor is a highly mobile platform with tether management and hydraulic power onboard. The heavy manipulator is a high-payload, long-reach boom used to deploy a wide variety of tools and/or sensors into the work area. Rosie`s advanced control system, broad work capabilities, and hardening/reliability for hazardous duty make it a new and unique capability that facilitates completion of significant cleanup projects throughout the Department of Energy (DOE) and private sector. Endurance testing of the first Rosie system from September 1995 to March 1996 has proven its capabilities and appropriateness for D&D applications. Design enhancements were incorporated into the second Rosie system to improve and add features necessary for deployment at a DOE facility decommissioning. This second Rosie unit was deployed to the Argonne National Laboratory`s CP-5 reactor facility in early December 1996, and it is currently being used in the decommissioning of the reactor there. This report will overview this second Rosie system and the design enhancements made to it based on the lessons learned during the design, fabrication, and testing of the first Rosie system. The Rosie system has been designed to be a versatile and adaptable tool that can be used in many different applications in D&D work at nuclear facilities. It can carry a wide variety of tooling, sensors, and other robotic equipment at the tip of its heavy manipulator, and it can deploy those items to many different hazardous work areas. Rosie`s capabilities and system design address the need for durability and reliability in these environments.

NONE

1998-12-31

457

Method and system for fault accommodation of machines  

NASA Technical Reports Server (NTRS)

A method for multi-objective fault accommodation using predictive modeling is disclosed. The method includes using a simulated machine that simulates a faulted actual machine, and using a simulated controller that simulates an actual controller. A multi-objective optimization process is performed, based on specified control settings for the simulated controller and specified operational scenarios for the simulated machine controlled by the simulated controller, to generate a Pareto frontier-based solution space relating performance of the simulated machine to settings of the simulated controller, including adjustment to the operational scenarios to represent a fault condition of the simulated machine. Control settings of the actual controller are adjusted, represented by the simulated controller, for controlling the actual machine, represented by the simulated machine, in response to a fault condition of the actual machine, based on the Pareto frontier-based solution space, to maximize desirable operational conditions and minimize undesirable operational conditions while operating the actual machine in a region of the solution space defined by the Pareto frontier.

Goebel, Kai Frank (Inventor); Subbu, Rajesh Venkat (Inventor); Rausch, Randal Thomas (Inventor); Frederick, Dean Kimball (Inventor)

2011-01-01

458

Machine intelligence for robotics applications  

SciTech Connect

The purpose of this paper is to review research in machine intelligence ongoing at the Center for Engineering Systems Advanced Research (CESAR). As a result of initial experimentation with our HERMIES-I mobile robot, hardware and software upgrades were implemented which enable fully asynchronous sonar operation, improved stepper motor control for the sensory platform, and more reliable wheel drive control. The current system, designated as HERMIES-II, is discussed. Successful demonstration of dead-reckoning navigation and the development of a sensor-based exploration and discovery algorithm which can now handle typical maze problems are reported. The development of HERMIES ''brain'' as a hypercube ensemble machine with concurrent computation and associated message passing is described. Algorithms for mapping precedence-constrained task graphs onto a hypercube yield results with high efficiency and proper load balance. A framework for a hybrid uncertainty analysis theory for decision making is described.

Weisbin, C.R.; Barhen, J.; de Saussure, G.; Hamel, W.R.; Jorgensen, C.; Oblow, E.M.; Ricks, R.E.

1985-01-01

459

Experimental and theoretical investigation of operational and survivability issues in thermal radiators for thermionic space nuclear power systems. Final report  

SciTech Connect

Heat pipes are a promising candidate for spacecraft radiators. This report describes a program designed to investigate the mass migration phenomenon in heat pipes. The program involved experiments to observe and measure the mass migration rates in both high and low operating temperature heat pipes. The low-temperature experiments were intended to simulate the operation of high-temperature, liquid metal heat pipes. Octadecane was the selected low-temperature working fluid. It is a paraffin and exhibits some of the characteristics of liquid metal working fluids. Sodium was the working fluid used in the high temperature experiment. A one-dimensional compressible flow model was developed for describing the hydrodynamics of rarefied vapor flow in heat pipe condensers. This model was compared with experimental data for the low-temperature octadecane heat pipes and the high-temperature sodium heat pipe. The model was found to satisfactorily predict the temperature profiles and location of freeze-fronts for the low-temperature heat pipes. Mass migration rate predictions using the model were satisfactory for the low-temperature heat pipes as well. However, the mass migration prediction for the high-temperature, sodium heat pipe was not in agreement with experimental data. An analytical model which accounts for property variations in the radial as well as longitudinal directions is recommended. A one-dimensional model was unsatisfactory for predicting mass migration rates in liquid metal heat pipes.

Keddy, M.D.

1994-03-15

460

Experimental Validation and Operation of the LHC Test String 2 Cryogenic System  

SciTech Connect

The LHC Test String 2 is a 107-m long superconducting magnet string representing a full-cell of the LHC machine. It was designed and commissioned at CERN in order to validate the final design choices and to investigate the collective behavior and operation modes of the LHC machine systems. It has been commissioned and operated since April 2001 and has accumulated more than 8000 hours at its nominal operating temperature of 1.9 K under machine-like conditions. We report on the experimental validation of the supercritical and superfluid helium cooling loops, quench propagation and recovery, heat loads, as well as on investigation of operational performances, advanced control techniques, process control, instrumentation and long term behavior under electrical and thermal cycling.

Blanco, E.; Calzas, C.; Casas, J.; Gomes, P.; Knoops, S.; Serio, L.; Weelderen, R. van [Accelerator Technology Division, CERN, 1211 Geneva 23 (Switzerland)

2004-06-23

461

Cost Effective Machining Of Ceramics (CEMOC)  

SciTech Connect

The purpose of the CEMOC program was to support U.S. industry needs in fabricating precision components, from difficult to machine materials, while maintaining and enhancing the precision manufacturing skills of the Oak Ridge Complex. Oak Ridge and partner company personnel worked in a team relationship wherein each contributed equally to the success of the program. In general, Oak Ridge contributed a wider range of expertise to a given task while the companies provided operations-specific equipment and shop-floor services. Process control technologies, machining procedures and parameters, and coolant-related environmental tasks were the primary focus areas. The companies were very pleased with the results of the CRADAs and are planning on continuing the relationships. Finish machining operations contribute the majority of the costs associated with fabricating high quality ceramic products. These components are typically used in harsh environments such as diesel engines, defense machinery, and automotive components. The required finishing operations involve a variety of technologies including process controls, machine coolants, product certification, etc. and are not limited only to component grinding methods. The broad range of manufacturing problem solving expertise available in Oak Ridge provided resources that were far beyond what are typically available to the CRADA partners. These partners contributed equipment, such as state-of-the-art machine tools, and operation-specific experience base. In addition, addressing these challenging tasks enabled Oak Ridge personnel to maintain familiarity with rapidly advancing technologies, such as those associated with computer control systems.

Barkman, W.E.

1997-04-18

462

15 CFR 700.31 - Metalworking machines.  

Code of Federal Regulations, 2013 CFR

...machines Miscellaneous machine tools Miscellaneous secondary metal forming and cutting machines Planers and shapers Polishing, lapping, boring, and finishing machines Punching and shearing machines Riveting machines Saws and filing...

2013-01-01

463

Superfund record of decision (EPA Region 1): Loring Air Force Base (Operable unit 6) site, ME, April 1994. Final report  

SciTech Connect

Loring AFB (LAFB) Operable Unit (OU) 6, consists of the Railroad Maintenance Site (RRMS), East Gate Waste Storage Tanks Site (EGWST), and Fuel Drop Sites (FDS) North 1 and 2 (FDS-N1 and FDS-N2, respectively), South-Active (FDS-SA) and South-Former (FDS-SF). The State of Maine Department of Environmental Protection (MEDEP) concurs with the selected remedy for the RRMS and with the No Action remedy under CERCLA for FDS-N1, FDS-N2, and FDS-SA. In separate actions which are not part of this Record of Decision (ROD), the Air Force is taking non-CERCLA remedial actions at EGWST and FDS-SF pursuant to state requirements under an Air Force/State Two-Party Supplement to the Federal Facility Agreement (FFA) being signed simultaneously with this ROD.

Not Available

1994-07-01

464

Commercialization of waste gob gas and methane produced in conjunction with coal mining operations. Final report, August 1992--December 1993  

SciTech Connect

The primary objectives of the project were to identify and evaluate existing processes for (1) using gas as a feedstock for production of marketable, value-added commodities, and (2) enriching contaminated gas to pipeline quality. The following gas conversion technologies were evaluated: (1) transformation to liquid fuels, (2) manufacture of methanol, (3) synthesis of mixed alcohols, and (4) conversion to ammonia and urea. All of these involved synthesis gas production prior to conversion to the desired end products. Most of the conversion technologies evaluated were found to be mature processes operating at a large scale. A drawback in all of the processes was the need to have a relatively pure feedstock, thereby requiring gas clean-up prior to conversion. Despite this requirement, the conversion technologies were preliminarily found to be marginally economic. However, the prohibitively high investment for a combined gas clean-up/conversion facility required that REI refocus the project to investigation of gas enrichment alternatives. Enrichment of a gas stream with only one contaminant is a relatively straightforward process (depending on the contaminant) using available technology. However, gob gas has a unique nature, being typically composed of from constituents. These components are: methane, nitrogen, oxygen, carbon dioxide and water vapor. Each of the four contaminants may be separated from the methane using existing technologies that have varying degrees of complexity and compatibility. However, the operating and cost effectiveness of the combined system is dependent on careful integration of the clean-up processes. REI is pursuing Phase 2 of this project for demonstration of a waste gas enrichment facility using the approach described above. This is expected to result in the validation of the commercial and technical viability of the facility, and the refinement of design parameters.

Not Available

1993-12-01

465

Investigation of electric and magnetic fields and operator exposure produced by VDTS: NIOSH VDT epidemiology study. Final report  

SciTech Connect

The report addresses the subject of electric and magnetic field emissions of video display terminals (VDTs), both radiofrequency (RF) and extremely-low frequency (ELF), at AT T and Bellsouth telephone operator facilities. The study represents one component of a larger study of possible reproductive effects in VDT operators being conducted by the National Institute for Occupational Safety and Health (NIOSH). The purpose of the study was to assess the strength of the electric and magnetic fields produced by the different types of displays to which participants in the NIOSH study could have been exposed. Because of the study design used in the epidemiology investigation, the exposure evaluation included a study of the fields associated with VDTs and two other forms of displays which do not use cathode-ray-tube technology. A study of 96 displays, selected at random, and located in nine cities, was conducted during April 23 through May 6, 1990. The comprehensive survey included measurements of very-low-frequency (VLF) RF electric and magnetic field emissions associated with the horizontal deflection circuits of the VDTs, at a distance of 30 centimeters (cm) from all accessible surfaces of each VDT. In addition, measurements of the ELF electric and magnetic fields produced by the vertical deflection circuits associated with the vertical refresh of the screen display were measured at a distance of 30 cm. The deflection frequencies were also measured. Based on the findings of the study, it is concluded that typical personnel exposures to VDT, NGT or LED electric or magnetic field emissions in the telephone offices investigated are relatively low, within the range of other exposure data on VDTs reported by other researchers, and are substantially less than any electric and magnetic field exposure limits developed for radiation protection purposes by organizations within the United States and many other countries.

Not Available

1990-09-18

466

Stone Picking Machines.  

National Technical Information Service (NTIS)

Stone picking machines are compared on the basis of their capabilities. Machines are classified as having a cyclic action which removes stones or a direct action which continuously loosens and sieves a layer of soil. The direct acting pickers have better ...

K. I. Preobrazhenskii V. S. Liflyandskii

1970-01-01

467

Fril++ for Machine Learning  

Microsoft Academic Search

Machine learning is one of the successful application areas of fuzzy set theory and fuzzy logic, which provide soft, and thus tolerant, way of partitioning attribute domains. Theoretical results have shown that there is no (fuzzy) machine learning algorithm that is the best for all tasks. Therefore, for a particular task, it is very useful to have a tool to

T. H. Cao; J. M. Rossiter

468

Semantics via Machine Translation  

ERIC Educational Resources Information Center

Recent experiments in machine translation have given the semantic elements of collocation in Russian more objective criteria. Soviet linguists in search of semantic relationships have attempted to devise a semantic synthesis for construction of a basic language for machine translation. One such effort is summarized. (CHK)

Culhane, P. T.

1977-01-01

469

Multimodal interactive machine translation  

Microsoft Academic Search

Interactive machine translation (IMT) [1] is an alternative approach to machine translation, integrating human expertise into the automatic translation process. In this framework, a human iteratively interacts with a system until the output desired by the human is completely generated. Traditionally, interaction has been performed using a keyboard and a mouse. However, the use of touchscreens has been popularised recently.

Vicent Alabau; Daniel Ortiz-Martínez; Alberto Sanchis; Francisco Casacuberta

2010-01-01

470

The Hooey Machine.  

ERIC Educational Resources Information Center

Describes how students can make and use Hooey Machines to learn how mechanical energy can be transferred from one object to another within a system. The Hooey Machine is made using a pencil, eight thumbtacks, one pushpin, tape, scissors, graph paper, and a plastic lid. (PR)

Scarnati, James T.; Tice, Craig J.

1992-01-01

471

Simple Machine Junk Cars  

ERIC Educational Resources Information Center

During the month of May, the author's eighth-grade physical science students study the six simple machines through hands-on activities, reading assignments, videos, and notes. At the end of the month, they can easily identify the six types of simple machine: inclined plane, wheel and axle, pulley, screw, wedge, and lever. To conclude this unit,…

Herald, Christine

2010-01-01

472

Automatic soldering machine  

NASA Technical Reports Server (NTRS)

Fully-automatic tube-joint soldering machine can be used to make leakproof joints in aluminum tubes of 3/16 to 2 in. in diameter. Machine consists of temperature-control unit, heater transformer and heater head, vibrator, and associated circuitry controls, and indicators.

Stein, J. A.

1974-01-01

473

Frozen beverage machine  

SciTech Connect

A frozen beverage machine is described, comprising: a. a frame having an exterior, an interior, a front and a back; b. a cylinder, having an interior and an exterior as well as first and second ends and further having an opening in each of the ends, the cylinder being horizontally and fixedly positioned within the interior of the frame with the second end facing the front of the frame; c. a means, sealingly attached to the opening in the second end of the cylinder, for emptying the cylinder; d. a means, positioned within the frame and communicating with the exterior of the cylinder, for removing heat from the cylinder; e. at least one support bracket; f. a shaft, rotatably attached within the opening in the support bracket and rotatably and sealingly attached within the opening in the first end of the cylinder and extending to the interior of the cylinder; g. a motor assembly, operatively connected to a portion of the shaft exterior to the cylinder and suspended from the shaft such that the weight of the motor assembly is supported only by the shaft; h. a contact switch; and i. a resilient means, connected to the frame and the motor assembly, for maintaining the position of the motor assembly relative to the shaft until a desired threshold resistance to rotation of the shaft within the cylinder occur, and then allowing the motor assembly to rotate to a desired position relative to the shaft.

Williams, J.D.

1988-04-12

474