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1

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

2

Stirling machine operating experience  

NASA Astrophysics Data System (ADS)

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 A.; Dudenhoefer, James E.

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

Research Support in Hungary Machine scheduling LED public lighting Microsimulation in public transportation Finally Optimization and Operation Research methods for  

E-print Network

Research Support in Hungary Machine scheduling LED public lighting Microsimulation in public, 2011 Industrial Innovation Problems #12;Research Support in Hungary Machine scheduling LED public Innovation Problems #12;Research Support in Hungary Machine scheduling LED public lighting Microsimulation

Balázs, Bánhelyi

5

Selection of sewing machine operators  

Microsoft Academic Search

50 sewing machine operators from a glove manufacturing concern, 25 from the highest fourth in earnings (at piece rate) and 25 from the lowest fourth, were administered the MacQuarrie Test for Mechanical Ability and the Blum Sewing Machine Test, the latter a simple work-sample test. Supervisors' ratings were obtained for these 50 operators. These ratings and earnings were used as

M. L. Blum

1943-01-01

6

Standard Operating Procedure (SOP) -Milling Machine  

E-print Network

Standard Operating Procedure (SOP) - Milling Machine · Keep all guards in place while operating the machine. · While operating the milling machine allow no one else to touch it. · Keep hands away from moving cutting tools. · Do not make measurements of the stock while the milling machine is powered. · Do

Veiga, Pedro Manuel Barbosa

7

30 CFR 18.61 - Final inspection of complete machine.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 false Final inspection of complete machine. 18.61 Section 18.61 Mineral Resources... 18.61 Final inspection of complete machine. (a) A completely assembled new machine or a substantially modified design...

2014-07-01

8

30 CFR 18.61 - Final inspection of complete machine.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Final inspection of complete machine. 18.61 Section 18.61 Mineral Resources... 18.61 Final inspection of complete machine. (a) A completely assembled new machine or a substantially modified design...

2012-07-01

9

30 CFR 18.61 - Final inspection of complete machine.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Final inspection of complete machine. 18.61 Section 18.61 Mineral Resources... 18.61 Final inspection of complete machine. (a) A completely assembled new machine or a substantially modified design...

2011-07-01

10

30 CFR 18.61 - Final inspection of complete machine.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Final inspection of complete machine. 18.61 Section 18.61 Mineral Resources... 18.61 Final inspection of complete machine. (a) A completely assembled new machine or a substantially modified design...

2010-07-01

11

30 CFR 18.61 - Final inspection of complete machine.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Final inspection of complete machine. 18.61 Section 18.61 Mineral Resources... 18.61 Final inspection of complete machine. (a) A completely assembled new machine or a substantially modified design...

2013-07-01

12

Machine Tool Design and Operation Strategies for Green Manufacturing  

E-print Network

Burden Analysis for Machining Operation using LCA Method,machining including machine tool design, process planning, and machine operationmachining, strategies to reduce the energy consumption of machine tools in the design and operation

2010-01-01

13

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.

14

Optimization of multi-pass machining operations  

Microsoft Academic Search

The purpose of this research was to develop an optimizing procedure for a multi. pass machining operation. Geometric programming was utilized to determine the values of the machining variable for each pass to yield minimum production cost. The levels of speed and feed were subject to certain restrictions based on allowable values of force, power and surface finish.

BRIAN K. LAMBERT; ARUN G. WALVEKAR

1978-01-01

15

Skill analysis of human in machine operation  

Microsoft Academic Search

A purpose of this paper is to discover catholic characteristic of human skill in machine manipulation for realization of a human adaptive mechatronics (HAM). HAM is a novel concept of intelligent mechanical systems that adapt themselves to the user's skill and assist to improve the user's skill. This paper reports experimental analyses of human characteristic in machine operation by utilizing

Satoshi Suzuki; F. Harashima; Y. Pan; K. Furuta

2005-01-01

16

Ergonomic study of automatic teller machine operability  

Microsoft Academic Search

In recent years, the most favorable interaction between information systems and people has drawn deep interest. An experimental study was conducted on the adaptation of computer?based communication to people at the automatic teller machines (ATMs) that are used by the general public. Forty?two subjects (24 young people, 6 housewives, and 12 elderly people) operated an automatic teller machine in the

Kazutoshi Hatta; Yuji Liyama

1991-01-01

17

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

18

Light Machines Operator Performance Support System  

SciTech Connect

The objective of this project was to create a multimedia operator performance support system (OPSS) shell that would provide a framework for delivering appropriate information to the student/novice machine tool user just when needed and in the most appropriate form. In addition, the program was designed so that it could be expanded and further developed by Light Machines personnel. The expertise of AlliedSignal Federal Manufacturing and Technologies (ASFM and T) in the areas of performance support system design and multimedia creation was employed to create the most user-friendly graphical user interface (GUI) while providing access to key topical areas. Light Machines provided a subject matter expert from their technical services group in order to provide the needed information for structuring the OPSS shell. They also provided a Benchman VMC 4000 machine tool at the ASFM and T New Mexico location as well as specific instruction on the safe and effective use of that machine tool.

Bohley, M.C.

1998-06-15

19

Operating System For Numerically Controlled Milling Machine  

NASA Technical Reports Server (NTRS)

OPMILL program is operating system for Kearney and Trecker milling machine providing fast easy way to program manufacture of machine parts with IBM-compatible personal computer. Gives machinist "equation plotter" feature, which plots equations that define movements and converts equations to milling-machine-controlling program moving cutter along defined path. System includes tool-manager software handling up to 25 tools and automatically adjusts to account for each tool. Developed on IBM PS/2 computer running DOS 3.3 with 1 MB of random-access memory.

Ray, R. B.

1992-01-01

20

Permanent Magnet Machines: Asychronous Operation  

Microsoft Academic Search

The permanent magnet motor operating at subsynchronous speeds, as during run-up, is treated with particular emphasis placed on the role that magnet excitation plays. The torque, during run-up, is separated into components called the \\

V. B. Honsinger

1980-01-01

21

Machine Operator Training Program and Curriculum.  

ERIC Educational Resources Information Center

This curriculum contains materials for use in duplicating the 11-week course for machine operators that was implemented at New Hampshire Vocational-Technical College in Nashua, New Hampshire. Addressed in the course, which is designed to prepare entry-level employees, are the following topics: basic math, blueprint reading, layout tools and

St. Cyr, David; And Others

22

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

23

Monitoring machine operations using on-line sensors  

Microsoft Academic Search

Monitoring machine operations and production process conditions using on-line sensors has drawn increasing attention recently. In this paper, we discuss a situation where an on-line sensor is used to monitor a randomly deteriorating machine operation. The machine condition is described by a finite number of states, and the machine deterioration follows a Markov process. It is assumed that the sensor

Linguo Gong; Kwei Tang

1997-01-01

24

From Operational Semantics to Abstract Machines John Hannan  

E-print Network

From Operational Semantics to Abstract Machines John Hannan Department of Computer Science 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

Miller, Dale

25

Musculoskeletal disorders among male sewing machine operators in shoemaking  

Microsoft Academic Search

Research on the relationship between the operation of sewing machines and the appearance of musculoskeletal disorders has been conducted mainly among women working in garment or textile production, in developed countries; little is known about male sewing machine operators in other industries, in less developed countries. This study involved 143 Mexican men operating sewing machines in eight shoe factories; 132

J. NIEVES SERRATOS-PEREZ; CARLOS MENDIOLA-ANDA

1993-01-01

26

Multi-Operation Multi-Machine Scheduling Weizhen Mao  

E-print Network

Multi-Operation Multi-Machine Scheduling Weizhen Mao The College of William and Mary, Williamsburg that in each shop there is only one machine to perform the required operations. In this paper, a parallel model of multi-operation scheduling is proposed, in which multiple machines are available in each shop to perform

Mao, Weizhen

27

A Queuing Network Model of a Single-Operator Manufacturing Workcell with Machine\\/Operator Interference  

Microsoft Academic Search

We present an analytical approach to evaluate the performance of a manufacturing workcell tended by a single operator when operator-induced machine interference occurs. Each part must be processed at every workstation in the workcell. The fact that one or more machines can request an operator service while the operator is busy at another machine induces machine interference. If the reduction

Paul Desruelle; Harold J. Steudel

1996-01-01

28

Superconductors in large synchronous machines. Final report  

Microsoft Academic Search

Research progress from the continuing program to apply superconductors in the field windings of large synchronous machines is reported for the eleven month contract period. The background of the project since 1969 is briefly reviewed. The general conclusion is that large superconducting turbogenerators are feasible and that the projected advantages should be realizable. Contractual details and a list of contributors

J. L. Jr

1976-01-01

29

An expert system of machining operation planning in Internet environment  

Microsoft Academic Search

A framework for machining operation planning systems is discussed, in which machining know-how, extracted and organized from electronic tool catalogs and machining instance databases available in the Internet environment plays a principal role. A system concept based on the use of reference machining instance data is proposed, which is derived from the investigation of tool catalogs, related international standards, reference

T Kojima; H Sekiguchi; H Kobayashi; S Nakahara; S Ohtani

2000-01-01

30

Impact of the host operating systems on virtual machine performance  

Microsoft Academic Search

Virtualization enables installation and running of multiple virtual machines on the same computer system. Operating system that communicates directly with hardware is known as the host operating system whereas virtual operating systems have all the features of a real operating system, but they run inside the host operating system. A virtual machine is separated from the computer hardware resources and

Goran Martinovic; Josip Balen; Snjezana Rimac-Drlje

2010-01-01

31

From Operational Semantics to Abstract Machines John Hannan  

E-print Network

From Operational Semantics to Abstract Machines John Hannan Department of Computer Science with respect to the operational semantics. We construc* *t these machines by repeatedly applying correctness@cis.upenn.edu Received 16 October 1992 We consider the problem of mechanically constructing abstract machines from

Miller, Dale

32

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

33

Food labeling; calorie labeling of articles of food in vending machines. Final rule.  

PubMed

To implement the vending machine food labeling provisions of the Patient Protection and Affordable Care Act of 2010 (ACA), the Food and Drug Administration (FDA or we) is establishing requirements for providing calorie declarations for food sold from certain vending machines. This final rule will ensure that calorie information is available for certain food sold from a vending machine that does not permit a prospective purchaser to examine the Nutrition Facts Panel before purchasing the article, or does not otherwise provide visible nutrition information at the point of purchase. The declaration of accurate and clear calorie information for food sold from vending machines will make calorie information available to consumers in a direct and accessible manner to enable consumers to make informed and healthful dietary choices. This final rule applies to certain food from vending machines operated by a person engaged in the business of owning or operating 20 or more vending machines. Vending machine operators not subject to the rules may elect to be subject to the Federal requirements by registering with FDA. PMID:25438345

2014-12-01

34

Virtual machine or virtual operating system?  

Microsoft Academic Search

Development of a multi-access system from an existing single-user system can be achieved by the virtual machine approach. If the virtual machines generated include as primitives the logical functions used by the single-user system activated on them, these extended virtual machines are able to support the single-user system at a decreased development, maintenance and running cost.

J. Bellino; Cl. Hans

35

The service machine as a service operation framework  

Microsoft Academic Search

Purpose Understanding and depicting service operations is important, as the contractual agreements have become more complex, particularly in offshore outsourcing. The purpose of this paper is to introduce the Service Machine as a metaphor and a parsimonious conceptual framework for analyzing outsourced service operations in a Business-to-Business-to-Consumer context. Conventional machines have frames or platforms that connect various components. The

Paul Lillrank; Minni Srkk

2011-01-01

36

Coordinated contour following control for machining operations-a survey  

Microsoft Academic Search

Contour following is one of the most critical requirements in multi-axial machining operations. In these operations, a tool path is defined to specify where material ought to be removed from the part being machined. The tool must precisely follow this contour as any deviations from the contour would result in unintentional material removal. In the paper, the main control approaches

Perry Y. Li

1999-01-01

37

Machining algebra for mapping volumes to machining operations for developing extensible generative CAPP  

Microsoft Academic Search

This paper presents geometric models for representing machining operations. The characteristic shapes produced by machining operations are represented in a uniform (canonical) form. The canonical representation is an algebraic expression that encodes the geometric shapes that can be produced by a process as a set of volumes resulting from two types of tool-workplace interactions. Each interaction is characterized by a

Arvind Shirur; Jami J. Shah; Kartheek Hirode

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

Robust operation of double-output AC machine drive  

Microsoft Academic Search

This paper presents strategies for maintaining operation of a double-output AC machine drive in the presence of various component failures. With a short\\/open-switch fault, the drive is capable of operating the AC machine at a reduced power capability by creating an artificial neutral. The procedures of mode transition are shown to depend on the system configuration. This operating method can

Y. Wang; T. A. Lipo; D. Pan

2011-01-01

40

Optimizing picking operations on dual-head placement machines  

Microsoft Academic Search

Dual-head placement machines, which operate according to a highly complex logic, are commonly used in circuit-card assembly lines to place large components with a high degree of accuracy. The purpose of this paper is to present a unique approach for optimizing the picking operations of a dual-head placement machine with the ultimate goal of improving the efficiency of assembly operations.

Wilbert E. Wilhelm; Ivette Arambula; N. N. D. Choudhry

2006-01-01

41

Work stress of women in sewing machine operation.  

PubMed

The study examined the work stresses of 107 women who were engaged in sewing machine operation in small garment manufacturing units. Of the three types of sewing machines (motor-operated, full and half shuttle foot-operated), 74% of the machines were foot-operated, where throttle action of the lower limb is required to move the shuttle of the machine. The motor-operated machines were faster than the foot-operated machines. The short cycle sewing work involves repetitive action of hand and feet. The women had to maintain a constant seated position on a stool without backrest and the body inclined forward. Long-term sewing work had a cumulative load on the musculo-skeletal structures, including the vertebral column and reflected in the form of high prevalence of discomfort and pain in different body parts. About 68% of the women complained of back pain, among whom 35% reported a persistent low back pain. Common sewing work accident is piercing of the needle through the fingers, particularly the right forefingers. Unsatisfactory man-machine incompatibility, work posture and fatigue, improper coordination of eye, leg and hand are the major problems of the operators. The design mis-match of the work place may be significantly improved by taking women's anthropometric dimensions in modifying the workplace, i.e. the seat surface, seat height, work height, backrest, etc. PMID:1491171

Nag, A; Desai, H; Nag, P K

1992-06-01

42

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.

43

Operational nuclear deterrence. Final report  

SciTech Connect

During the Cold War the superpower rivalry between the United States and the Soviet Union produced nuclear strategy based upon a now familiar concept, strategic nuclear deterrence. As we adjust to a remarkably different global security environment, one characteristic of which is the proliferation of weapons of mass destruction, a natural question arises: can deterrence play a part in nuclear strategies focused on regional foes possessing small nuclear arsenals. The paper examines the viability of 'operational' nuclear deterrence employed in the resolution of regional conflicts. The object of operational nuclear deterrence is to persuade an adversary not to use nuclear weapons. To be effective, a deterrent strategy must be credible; the enemy must perceive that we possess the means, will, and commitment to severely retaliate.... Nuclear deterrence, Regional conflict, Strategic deterrence, Operational deterrence.

Bedey, D.F.

1993-01-01

44

A comprehensive interactive microcomputer capability for demonstrating AC machine operation  

Microsoft Academic Search

A software package is described for graphically and analytically demonstrating the steady-state behavior of polyphase machines under a variety of operating conditions. Implemented in the C language, the program employs sophisticated screen color graphics to show the slow-motion progression of the appropriate voltage or current waves, the loci of the resulting magnetic fields, and the movement of the machine rotor.

H. A. Smolleck; D. S. Dwyer

1991-01-01

45

A human-assisted knowledge extraction method for machining operations  

Microsoft Academic Search

This paper deals with a human-assisted knowledge extraction method to extract ifthen rules from a small set of machining data. The presented method utilizes both probabilistic reasoning and fuzzy logical reasoning to benefit from the machining data and from the judgment and preference of a machinist. Using the extracted rules, one can determine the values of operational parameters (feed, cutting

A. M. M. Sharif Ullah; Khalifa H. Harib

2006-01-01

46

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

47

Teaching "Embedded Operating Systems" using Raspberry Pi and Virtual Machines  

E-print Network

Teaching "Embedded Operating Systems" using Raspberry Pi and Virtual Machines Diego R. Llanos Dpto of virtual machines and Raspberry Pi kits. Our experience shows that the topics covered and the project the case of the Raspberry Pi microcomputer. The Raspberry Pi [1] is a credit-card sized computer board

Llanos, Diego R.

48

Final Report: PSP No.14402-10-02 Improved Manufacturing of MC4531 Mold Bodies Using High-Speed Machining  

SciTech Connect

Document is the final report for PSP project No. 14402-10-02 entitled ''Improved Manufacturing of MC4531 Mold Bodies Using High-Speed Machining (HSM)''. The basic physics of high speed machining is discussed in detail including multiple vibrational mode machining systems (milling and turning) and the effect of spindle speed regulation on maximizing the depth of cut and metal removal rate of a machining operation. The topics of cutting tests and tap tests are also discussed as well as the use of the HSM assistance software ''Harmonizer''. Results of the application of HSM to the machining of encapsulation molds are explained in detail including cutting test results, new tool speeds and feeds, dimensional and surface finish measurements and a comparison to the original machining operations and cycle times. A 38% improvement in cycle time is demonstrated while achieving a 50% better surface finish than required.

JOKIEL JR., BERNHARD

2002-10-01

49

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

50

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

Federal Register 2010, 2011, 2012, 2013, 2014

...TA-W-74,575D] International Business Machines (IBM), Global Sales Operations Organization...Charleston, WV; International Business Machines (IBM), Global Sales Operations Organization...to workers of International Business Machines (IBM), Global Sales Operations...

2011-01-03

51

A trade test for power sewing machine operators  

Microsoft Academic Search

A trade test for power sewing machine operators consisting of 4 work samples was devised. Test scores correlated .64 with supervisors' ratings, .53 with production records, and .67 with combined criteria.

Edward Glanz

1949-01-01

52

Sewing-machine operators' work and musculo-skeletal complaints  

Microsoft Academic Search

The purpose of the study was to obtain information about the possible occupational origin of the high occurrence of musculo-skeletal (rheumatic) complaints among sewing-machine operators. The subjects were chosen by random sampling and comprised 40 sewing-machine operators with short work cycles (30-60 s) and 20 seamstresses as the reference group. The two groups were matched with respect to age and

TAPANI VIHMA; MARKKU NURMINEN; PERTTI MUTANEN

1982-01-01

53

Musculoskeletal disorders among male sewing machine operators in shoemaking.  

PubMed

Research on the relationship between the operation of sewing machines and the appearance of musculoskeletal disorders has been conducted mainly among women working in garment or textile production, in developed countries; little is known about male sewing machine operators in other industries, in less developed countries. This study involved 143 Mexican men operating sewing machines in eight shoe factories; 132 of them operated flat-type machines, 11 column-type machines. When studied, the operators had been in this task for at least one year. The study aimed to identify the body regions more liable to develop musculoskeletal disorders and the rates both of appearance of such troubles and of sick leave resulting from them. A questionnaire was given to each worker, asking for their work history, the presence of musculoskeletal disorders at the time of the inquiry, and the frequency of sick leave during the previous 12 months; additionally, a number of workers were filmed on video and this material was then used to identify the body regions undergoing the major work demands. 47.5% of the subjects declared current musculoskeletal disorders; a statistical difference was found when the two groups were considered separately. Low back pain was the most frequent at a rate of 18.2% for both groups; the shoulder was a site of complaint for 14% of the subjects, being three times more frequent among column-machine operators; the back as a whole was mentioned also by 14% of the subjects, all of them flat-machine operators; 4.9% of the subjects complained of neck pain and again none of the column-machine operators was affected.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:8339719

Serratos-Perez, J N; Mendiola-Anda, C

1993-07-01

54

Planning the Tree Planting Operation Figure 1. Example of a machine planting operation on a  

E-print Network

Planning the Tree Planting Operation FNR-223 Figure 1. Example of a machine planting operation." Although silvicultural operations vary with the type of planting scheme chosen, the planning process preclude the use of a planting machine (Fig. 1). During this site inspection, determine how many pre

55

Debugging operating systems with time-traveling virtual machines  

Microsoft Academic Search

Operating systems are difficult to debug with traditional cyclic debugging. They are non-deterministic; they run for long periods of time; they interact directly with hard- ware devices; and their state is easily perturbed by the act of debugging. This paper describes a time-traveling vir- tual machine that overcomes many of the difficulties as- sociated with debugging operating systems. Time travel

Samuel T. King; George W. Dunlap; Peter M. Chen

56

Machine tool for multiple operations, preferably for nuclear applications  

Microsoft Academic Search

Available from the Commission of European Communities, Luxembourg. A ; remotely controlled machine is described for multiple operations such as opening. ; unscrewing, welding and screwing of radioactive materials and articles comprising ; a circular plate on which are disposed a rotating plate with movable jaws, a ; turret with a tool carriage for said operations and a column with

R. Gillot; P. Montellanico; E. Righino; A. Sgarlata

1971-01-01

57

Sewing machine operation: workstation adjustment, working posture, and workers perceptions  

Microsoft Academic Search

At a traditional sewing machine workstation professional operators worked at ten different combined adjustments of table height, desk slope, and pedal position. Working posture and workers perceptions were measured. Two recommendations were formulated in order to minimize the load on the musculoskeletal system during operation, i.e. (1) the table desk should be adjusted between 5 and 15cm above elbow height

Nico J Delleman; Jan Dul

2002-01-01

58

Milling Machine Operator: Instructor's Guide for an Adult Course.  

ERIC Educational Resources Information Center

The instructor's guide is for a course expected to help meet the need for trained operators in metalworking. Students successfully completing the course will be qualified for an entry-level job as a milling machine operator. The course is suitable for use in adult education programs of school districts, or in manpower development and training

New York State Education Dept., Albany. Bureau of Secondary Curriculum Development.

59

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

60

Man-machine interface: The position of the anaesthetic machine in the operating room  

Microsoft Academic Search

The question posed for this study was: While holding a watching brief during an uneventful intra-abdominal surgical procedure\\u000a do anaesthetists adopt the same position in the operating room with reference to the patients head and anaesthetic machine\\u000a and, if they do, what is it?\\u000a \\u000a A study of the relative positions of the patient, the anaesthetist, and the anaesthetic machine during

J. W. R. McIntyre

1982-01-01

61

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

62

Linear parameter estimation for induction machines considering the operating conditions  

Microsoft Academic Search

The use of linear parameter estimation techniques to determine the stator resistance, self-inductance of the stator winding, transient inductance, rotor time constant, as well as the angular shaft speed of a three-phase induction machine is investigated in this paper. In order to obtain results with maximum accuracy, some specific procedures to reduce the effect of the operating conditions on the

L. A. de Souza Ribeiro; C. B. Jacobina; A. M. N. Lima

1999-01-01

63

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

64

A neutral information model for simulating machine shop operations  

Microsoft Academic Search

Small machine shops typically do not have the resources to develop custom simulations of their operations or data translators to import their data from other manufacturing software applications. We present an overview of an information model currently under development at the National Institute of Standards and Technology (NIST) to address this problem. The model provides neutral data interfaces for integrating

Y. Tina Lee; Charles McLean; Guodong Shao

2003-01-01

65

Robotics and Computer Integrated Manufacturing 18 (2002) 233239 Diagnosis of multi-operational machining processes through  

E-print Network

design information. The virtual machining concept is applied to isolate faults between operations variations from all operations. For example, a machining process could have many operations. At each single for the multi-operational machining process. Mantripragada and Whitney [3] adopted the concept of output

Zhou, Shiyu

66

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

67

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

68

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

Code of Federal Regulations, 2013 CFR

...Occupations involved in the operation of bakery machines (Order 11). 570.62 Section 570...Occupations involved in the operation of bakery machines (Order 11). (a) Finding and declaration...the operation of power-driven bakery machines are particularly hazardous for the...

2013-07-01

69

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

Code of Federal Regulations, 2014 CFR

...Occupations involved in the operation of bakery machines (Order 11). 570.62 Section 570...Occupations involved in the operation of bakery machines (Order 11). (a) Finding and declaration...the operation of power-driven bakery machines are particularly hazardous for the...

2014-07-01

70

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

Code of Federal Regulations, 2012 CFR

...Occupations involved in the operation of bakery machines (Order 11). 570.62 Section 570...Occupations involved in the operation of bakery machines (Order 11). (a) Finding and declaration...the operation of power-driven bakery machines are particularly hazardous for the...

2012-07-01

71

CIRP Conference on Modeling of Machining Operations (CIRP CMMO) Cyclic Variation of Residual Stress Induced by  

E-print Network

14th CIRP Conference on Modeling of Machining Operations (CIRP CMMO) Cyclic Variation of Residual Stress Induced by Tool Vibration in Machining Operations J.C. Outeiroa,* , J.-P. Costesa , J. R manuscript, published in "14th CIRP Conference on Modeling of Machining Operations (CIRP CMMO), Italy (2013

Boyer, Edmond

72

Computer Based Motor Parameter Determination for High Speed Operation of Permanent Magnet Synchronous Machines  

E-print Network

PM synchronous machine parameters in the high speed operating range. The theory and real for by recomputation of the machine model over a wide range of operating points. Such model recomputation is shown to provide repeatable analysis of any brushless PM synchronous machine over its entire operating range

Szabados, Barna

73

Landers, Ulsoy, and Furness 1 Process Monitoring and Control of Machining Operations  

E-print Network

Landers, Ulsoy, and Furness 1 Process Monitoring and Control of Machining Operations Robert G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 #12;Landers, Ulsoy, and Furness 2 1 INTRODUCTION Machining operations (e.g., drilling, milling phenomena naturally occur in machining operations which are detrimental to this objective. In this chapter

Landers, Robert G.

74

49 CFR 214.355 - Training and qualification in on-track safety for operators of roadway maintenance machines.  

Code of Federal Regulations, 2012 CFR

...safety for operators of roadway maintenance machines. 214.355 Section 214.355 Transportation...safety for operators of roadway maintenance machines. (a) The training and qualification...workers who operate roadway maintenance machines shall include, as a minimum:...

2012-10-01

75

49 CFR 214.355 - Training and qualification in on-track safety for operators of roadway maintenance machines.  

Code of Federal Regulations, 2010 CFR

...safety for operators of roadway maintenance machines. 214.355 Section 214.355 Transportation...safety for operators of roadway maintenance machines. (a) The training and qualification...workers who operate roadway maintenance machines shall include, as a minimum:...

2010-10-01

76

49 CFR 214.355 - Training and qualification in on-track safety for operators of roadway maintenance machines.  

Code of Federal Regulations, 2011 CFR

...safety for operators of roadway maintenance machines. 214.355 Section 214.355 Transportation...safety for operators of roadway maintenance machines. (a) The training and qualification...workers who operate roadway maintenance machines shall include, as a minimum:...

2011-10-01

77

49 CFR 214.355 - Training and qualification in on-track safety for operators of roadway maintenance machines.  

Code of Federal Regulations, 2013 CFR

...safety for operators of roadway maintenance machines. 214.355 Section 214.355 Transportation...safety for operators of roadway maintenance machines. (a) The training and qualification...workers who operate roadway maintenance machines shall include, as a minimum:...

2013-10-01

78

Nano is very small We operate machines all day. The alarm clock that wakes  

E-print Network

Nano is very small We operate machines all day. The alarm clock that wakes us up in the morning, enabling us easily to control them and to sense their operation. Nanotechnology promises to make machines, or telephone we have in our office, are just a few examples. These machines all have mechanical elements that

Lifshitz, Ron

79

An Operator-based Approach to Incremental Development of Conform Protocol State Machines  

E-print Network

An Operator-based Approach to Incremental Development of Conform Protocol State Machines Arnaud] introduces protocol state machines (PSMs) to describe valid sequences of operation calls of an object. PSMs development framework which supports a conform construction of Protocol State Machines (PSMs) is presented. We

Paris-Sud XI, Université de

80

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

81

Wire-cut electrical discharge machinability of ceramics. Final report  

Microsoft Academic Search

The wire-cut electrical discharge machinability of four ceramics was evaluated. Titanium diboride and silicon carbide workpieces were successfully cut in the monolithic state. Boron carbide could only be cut when a metallic sandwich structure was placed around the workpiece. Silicon nitride could not be successfully cut. Mechanisms of material removal as well as a minimum level of workpiece electrical conductance

W. S. Ricci; H. A. Skeele; W. R. Blumenthal

1987-01-01

82

An Approach to Verbalization and Translation by Machine. Final Report.  

ERIC Educational Resources Information Center

The report documents performance on a 24-month R&D effort oriented toward the development of a computerized model for machine translation of natural languages. The model is built around a set of procedures called verbalization, intended to stimulate the processes employed by a speaker or writer in turning stored information into words.

Chafe, Wallace L.

83

Tunnel boring machine and method of operating same  

SciTech Connect

A tunneling machine adapted to cut tunnels on a continuous basis and to apply continuous pressure on the tunnel face even during repositioning of the gripping legs is disclosed. The machine includes at least two supporting frames having a plurality of extendible feet which are adapted to grip the tunnel wall. The support frames are provided with axial bores therethrough, and a hollow piston extends through all of the bores for longitudinal movement along the axis of the tunnel. In accordance with the method, a tunneling operation is carried out by extending at least one pair of extendible feet against the walls of the tunnel to securely hold at least one of the support frames relative to the tunnel wall. The piston chamber of each support frame which is clamped to the wall is pressurized to drive the cutter head against the face of the tunnel. While the cutter head is being advanced in this manner, unclamped support feet are moved forward to a clamping position to take over when the first-mentioned support feet reach the end of their effective stroke. This operation is repeated to apply continuous thrust pressure to the cutting head.

Snyder, L.L.

1983-02-01

84

Wire-cut electrical discharge machinability of ceramics. Final report  

SciTech Connect

The wire-cut electrical discharge machinability of four ceramics was evaluated. Titanium diboride and silicon carbide workpieces were successfully cut in the monolithic state. Boron carbide could only be cut when a metallic sandwich structure was placed around the workpiece. Silicon nitride could not be successfully cut. Mechanisms of material removal as well as a minimum level of workpiece electrical conductance necessary for EDM are proposed. Characterization of the surface damage resulting from electrical-discharge machining is presented. Recast, partially melted, and heat-affected zones are identified. The effects of parametric processing variations on surface integrity are discussed. Flexure strength and residual stress data are compared for EDM cut and diamond-ground surfaces in titanium diboride. Certain limitations are proposed for the EDM fabrication of ceramic components where surface defects are strength limiting.

Ricci, W.S.; Skeele, H.A.; Blumenthal, W.R.

1987-09-01

85

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

86

Dynamic Motor Parameter Identification for High Speed Flux Weakening Operation of Brushless Permanent Magnet Synchronous Machines  

E-print Network

the behaviour of brushless PM synchronous machine parameters in the high speed flux weakening operating range and accounted for through recomputation of the machine model over a wide range of operating points. The authorsDynamic Motor Parameter Identification for High Speed Flux Weakening Operation of Brushless

Szabados, Barna

87

Nature of Soviet operational art. Final report  

SciTech Connect

Soviet operational art today provides a framework for, studying, understanding, preparing for, and conducting war. Together with strategy and tactics, it makes the study of war an academic discipline requiring intense research and scholarship on the part of those who write about and who would have to conduct war. As such, operational art performs distinct tasks associated with the conduct of war.

Glantz, D.M.

1985-01-01

88

Adaption of Machine Fluid Analysis for Manufacturing - Final Report  

SciTech Connect

Pacific Northwest National Laboratory (PNNL: Operated by Battelle Memorial Institute for the Department of Energy) is working with the Department of Energy (DOE) to develop technology for the US mining industry. Filtration and lubricant suppliers to the pulp and paper industry had noted the recent accomplishments by PNNL and its industrial partners in the DOE OIT Mining Industry of the Future Program, and asked for assistance in adapting this DOE-funded technology to the pulp and paper industry.

Pardini, Allan F.

2005-08-16

89

The REX-ISOLDE charge breeder as an operational machine  

NASA Astrophysics Data System (ADS)

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.

2006-03-01

90

Tunnel boring machine and method of operating same  

Microsoft Academic Search

A tunneling machine adapted to cut tunnels on a continuous basis and to apply continuous pressure on the tunnel face even during repositioning of the gripping legs is disclosed. The machine includes at least two supporting frames having a plurality of extendible feet which are adapted to grip the tunnel wall. The support frames are provided with axial bores therethrough,

1983-01-01

91

Code-generation for machines with multiregister operations  

Microsoft Academic Search

Previous work on optimal code generation has usually assumed that the underlying machine has identical registers and that all operands fit in a single register or memory location. This paper considers the more realistic problem of generating optimal code for expressions involving single and double length operands, using several models of register-pair machines permitting both single and double word instructions.

Alfred V. Aho; Stephen C. Johnson; Jeffrey D. Ullman

1977-01-01

92

Computer Programmed Milling Machine Operations. High-Technology Training Module.  

ERIC Educational Resources Information Center

This learning module for a high school metals and manufacturing course is designed to introduce the concept of computer-assisted machining (CAM). Through it, students learn how to set up and put data into the controller to machine a part. They also become familiar with computer-aided manufacturing and learn the advantages of computer numerical

Leonard, Dennis

93

A fuzzy expert system for the design of machining operations  

Microsoft Academic Search

In this paper, a fuzzy expert system called Smart Assistant to Machinist, or SAM, is introduced. The system consists of four modules: a database, a cutter selection module, a cutting condition design module and a learning module. The database consists of four data files: work material data file, machine tool data file, machining plan data file (which defines desirable material

Yuedong Chen; Albert Hui; R. Du

1995-01-01

94

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

95

Abstract --This article sets forth a design optimization methodology for an SMPM machine drive on an operating  

E-print Network

on an operating profile. The optimization parameters serve to describe both the machine geometry and electrical control is optimized at every operating point in order to not only minimize machine drive losses but also on the operating profile of an SMPM machine drive for a wave energy conversion application. The term "operating

Paris-Sud XI, Université de

96

Present Situation and Future Trends in Modelling of Machining Operations Progress Report of the CIRP Working Group Modelling of Machining Operations  

Microsoft Academic Search

In 1995 CIRP STC Cutting started a working group Modelling of Machining Operations with the aim of stimulating the development of models capable of predicting quantitatively the performance of metal cutting operations which will be better adapted to the needs of the metal cutting industry in the future. This paper has the character of a progress report. It presents the

C. A. van Luttervelt; T. H. C. Childs; I. S. Jawahir; F. Klocke; P. K. Venuvinod; Y. Altintas; E. Armarego; D. Dornfeld; I. Grabec; J. Leopold; B. Lindstrom; D. Lucca; T. Obikawa; Shirakashi; H. Sato

1998-01-01

97

Highway operation and plant damage. Final report  

SciTech Connect

A five year study investigated the relationship between highway operation and plant damage in the Tahoe Basin and adjacent highways. These studies include field surveys, greenhouse studies, soil salt application trials, foliar salt application trials, an Armillaria root rot inoculation study, a seasonal fluctuation of salt study, the effect of temperature on salt uptake and a bark absorption of salt study. Highway deicing salt is a cause of damage on conifers, usually limited to 30 feet from the pavement edge. Drainage patterns and salt carried by aerosols may extend damage farther from the pavement. Of the four principal conifers in the study area, Jeffrey pine and lodgepole pine appeared the most tolerant of salt and incense cedar was the most susceptible.

Leiser, A.T.; Palaniyandi, R.; Paul, J.L.; Raabe, R.

1980-04-01

98

Method and system for controlling a synchronous machine over full operating range  

DOEpatents

System and method for controlling a synchronous machine are provided. The method allows for calculating a stator voltage index. The method further allows for relating the magnitude of the stator voltage index against a threshold voltage value. An offset signal is generated based on the results of the relating step. A respective state of operation of the machine is determined. The offset signal is processed based on the respective state of the machine.

Walters, James E. (Carmel, IN); Gunawan, Fani S. (Westfield, IN); Xue, Yanhong (Westfield, IN)

2002-01-01

99

Quantification of uncertainty in machining operations for on-machine acceptance.  

SciTech Connect

Manufactured parts are designed with acceptance tolerances, i.e. deviations from ideal design conditions, due to unavoidable errors in the manufacturing process. It is necessary to measure and evaluate the manufactured part, compared to the nominal design, to determine whether the part meets design specifications. The scope of this research project is dimensional acceptance of machined parts; specifically, parts machined using numerically controlled (NC, or also CNC for Computer Numerically Controlled) machines. In the design/build/accept cycle, the designer will specify both a nominal value, and an acceptable tolerance. As part of the typical design/build/accept business practice, it is required to verify that the part did meet acceptable values prior to acceptance. Manufacturing cost must include not only raw materials and added labor, but also the cost of ensuring conformance to specifications. Ensuring conformance is a substantial portion of the cost of manufacturing. In this project, the costs of measurements were approximately 50% of the cost of the machined part. In production, cost of measurement would be smaller, but still a substantial proportion of manufacturing cost. The results of this research project will point to a science-based approach to reducing the cost of ensuring conformance to specifications. The approach that we take is to determine, a priori, how well a CNC machine can manufacture a particular geometry from stock. Based on the knowledge of the manufacturing process, we are then able to decide features which need further measurements from features which can be accepted 'as is' from the CNC. By calibration of the machine tool, and establishing a machining accuracy ratio, we can validate the ability of CNC to fabricate to a particular level of tolerance. This will eliminate the costs of checking for conformance for relatively large tolerances.

Claudet, Andre A.; Tran, Hy D.; Su, Jiann-Chemg

2008-09-01

100

Practical design and operating characteristic analysis of a 10 kW HTS DC induction heating machine  

NASA Astrophysics Data System (ADS)

Conventional induction heaters have been in operation in metal and related industries with poor energy efficiencies of only 50-60%. Also, the efficiency of atmosphere furnace, one of the various heating facilities for metal billets, is about 20%. Hence, a high temperature superconducting (HTS) DC induction heating machine to heat a rotating metal billet under uniform magnetic field generated by the 2G HTS magnet with about 80-90% of the system energy efficiency has been researched in this paper. We presented practical design specification, operational characteristics, and temperature distribution on a 10 kW class HTS DC induction heating machine which had been built and tested. The saturated temperature of an HTS no-insulated(NI) coil in the cryostat fabricated with 100 A of the operating current reached 45.9 K and the magnetic field at the centre point between two iron cores measured 0.2 T. The rotating machine for 4.1 kg of the aluminum billet was tested on 1760 rpm of the rated rotating speed. The final temperature of the aluminum billet has risen up to 500 C for 480 s. The research outcomes are expected to be useful for the design of a large scale HTS DC induction heating machine in industries.

Choi, Jongho; Kim, Kwangmin; Park, Minwon; Yu, In-Keun; Kim, Seokho; Sim, Kideok; Kim, Hae-jong

2014-09-01

101

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

Code of Federal Regulations, 2012 CFR

...operation of power-driven woodworking machines (Order 5). 570.55 Section 570...operation of power-driven woodworking machines (Order 5). (a) Finding and declaration...operation of power-driven wood-working machines are particularly hazardous for...

2012-07-01

102

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

Code of Federal Regulations, 2011 CFR

...operation of power-driven woodworking machines (Order 5). 570.55 Section 570...operation of power-driven woodworking machines (Order 5). (a) Finding and declaration...operation of power-driven wood-working machines are particularly hazardous for...

2011-07-01

103

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

Code of Federal Regulations, 2014 CFR

...operation of power-driven woodworking machines (Order 5). 570.55 Section 570...operation of power-driven woodworking machines (Order 5). (a) Finding and declaration...operation of power-driven wood-working machines are particularly hazardous for...

2014-07-01

104

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

Code of Federal Regulations, 2013 CFR

...operation of power-driven woodworking machines (Order 5). 570.55 Section 570...operation of power-driven woodworking machines (Order 5). (a) Finding and declaration...operation of power-driven wood-working machines are particularly hazardous for...

2013-07-01

105

This position paper argues that the operating system and applications currently running on a real machine should  

E-print Network

on different operating sys- tems. At least two recent research projects also use virtual machines: Disco uses virtual machines to run multiple commodity operating systems on large-scale multiproces- sors [4 is that the operating system and applica- tions that currently run directly on real machines should relocate

Chen, Peter M.

106

Study on Performance of Integration Control by Man and Machine in Stage of Final Approaching for Spaceship Rendezvous and Docking  

NASA Astrophysics Data System (ADS)

With the development of manned space technology, space rendezvous and docking (RVD) technology will play a more and more important role. The astronauts participation in a final close period of man-machine combination control is an important way of RVD technology. Spacecraft RVD control involves control problem of a total of 12 degrees of freedom (location) and attitude which it relative to the inertial space the orbit. Therefore, in order to reduce the astronauts operation load and reduce the security requirements to the ground station and achieve an optimal performance of the whole man-machine system, it is need to study how to design the number of control parameters of astronaut or aircraft automatic control system. In this study, with the laboratory conditions on the ground, a method was put forward to develop an experimental system in which the performance evaluation of spaceship RVD integration control by man and machine could be completed. After the RVD precision requirements were determined, 26 male volunteers aged 20-40 took part in the performance evaluation experiments. The RVD integration control success rates and total thruster ignition time were chosen as evaluation indices. Results show that if less than three RVD parameters control tasks were finished by subject and the rest of parameters control task completed by automation, the RVD success rate would be larger than eighty-eight percent and the fuel consumption would be optimized. In addition, there were two subjects who finished the whole six RVD parameters control tasks by enough train. In conclusion, if the astronauts' role should be integrated into the RVD control, it was suitable for them to finish the heading, pitch and roll control in order to assure the man-machine system high performance. If astronauts were needed to finish all parameter control, two points should be taken into consideration, one was enough fuel and another was enough long operation time.

Zhou, Qianxiang; Liu, Zhongqi

107

Occupational 50 Hz magnetic field exposure measurements among female sewing machine operators in Hungary.  

PubMed

Occupational magnetic field (MF) exposure is less thoroughly characterized in occupations typically held by women. Our objective was to characterize occupational 50 Hz MF personal exposure (PE) among female sewing machine operators. We measured the full shift PE of 51 seamstresses, who worked in two shifts (6-14 and 14-22 h) according to their normal work routine. Measurements were conducted using EMDEX PAL meters at chest level. The average duration of the measurement periods was 449 min (range 420-470). The average arithmetic mean exposure for all women was 0.76 microT (range 0.06-4.27). The average of maximum values was 4.30 microT (range 0.55-14.80). Women working with older sewing machines experienced higher exposure than women working on newer sewing machines. For women (n = 10) who operated sewing machines produced in 1990 or earlier, the average arithmetic mean exposure was 2.09 microT, and for women (n = 41) who operated sewing machines produced after 1990, the average arithmetic mean was 0.43 microT. We conclude that women working as sewing machine operators experience higher than average occupational MF exposure compared to other working women. Most important determinant of the women's personal MF exposure was the age of the sewing machine the women operated. PMID:16622866

Szab, J; Mezei, K; Thurczy, G; Mezei, G

2006-09-01

108

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

DOEpatents

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

109

Applying group technology in the operational planning of electronics assembly (multiple machine case)  

E-print Network

of PCBs such that the total make span is minimized. The assembly system under consideration consists of multiple non-identical placement machines. The operational planning problem is decomposed into three sub- problems. The three sub-problems are Group...

Awwad, Ghassan Samir

2012-06-07

110

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

111

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

112

The optimal subdivision of cut in multi-pass machining operations  

Microsoft Academic Search

The examination of the economics of multi-pass machining operations has significant practical importance, particularly in the development of algorithms for process planning, and area clearance macros for numerically controlled machine tools.The authors show that, for both turning and milling operations, the optimal widths of cut may usually be evaluated without a knowledge of the relevant tool-life equation. The exception to

I. YELLOWLEY; E. A. GUNN

1989-01-01

113

The psychological certificate of the computer. [operator performance in man machine system  

NASA Technical Reports Server (NTRS)

A systems structural approach is reported to study the operator for a computerized man machine system psychologically in order to obtain relative estimates for his performance in the particular system he serves. Considered are the reliability of sensorimotor control functions for the reconstructed system and its indices according to the level of effectiveness of the operator's accomplishment of intellectual operations.

Mileryan, Y. A.

1975-01-01

114

Tritium recovery from carbon particulate Until 2009 the JET machine has operated with a  

E-print Network

Tritium recovery from carbon particulate Background Until 2009 the JET machine has operated the vacuum vessel is vented for maintenance. Continued operation without recovery would result fuel cycle Tritium recovery system #12;Outcome Operating parameters for the recovery of tritium from

115

A human-machine interface for multireactor operation  

Microsoft Academic Search

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,

D. Zizzo; Y. Dayal; D. Carroll; S. Hashimoto; T. Ishida

1993-01-01

116

Operating System of a Double-Front Work Machine for Simultaneous Operation  

Microsoft Academic Search

Many kinds of work machines based on hydraulic excavators have been developed for various work fields, e.g. demolition and industrial waste disposal. These work machines have also played an important role in the recovery work after disasters such as earthquakes, typhoons, and floods. We think that adapting these work machines to complex works will be expected in the near future.

Akinori ISHII

117

Basic Operation of Cryocoolers and Related Thermal Machines  

NASA Astrophysics Data System (ADS)

This paper deals with the basics of cryocoolers and related thermodynamic systems. The treatment is based on the first and second law of thermodynamics for inhomogeneous, open systems using enthalpy flow, entropy flow, and entropy production. Various types of machines, which use an oscillating gas flow, are discussed such as: Stirling refrigerators, GM coolers, pulse-tube refrigerators, and thermoacoustic coolers and engines. Furthermore the paper deals with Joule-Thomson and dilution refrigerators which use a constant flow of the working medium.

de Waele, A. T. A. M.

2011-09-01

118

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

119

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

120

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

121

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

122

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

NASA Astrophysics Data System (ADS)

A mass transfer machine for gas/liquid operations under low gravity was developed. It consists of two flat rotors, the inner surfaces being ribbed in radial direction. Due to the rotation of the machine, the liquid introduced in the center, is repeatedly dispersed on the edges of the ribs, which are arranged in series. Transport, dispersion and separation of liquid and gas are effected by centrifugal forces. The fluid dynamics were investigated for countercurrent, transition and cocurrent flow. The mass transfer investigations were carried out by desorption of CO2 from water into air. The machine is well suited for air cleaning in spacecraft or submarine labs.

Brauer, H.; Gaebelein, W.

1984-07-01

123

Learning and optimization of machining operations using computing abilities of neural networks  

Microsoft Academic Search

The success of automated manufacturing relies to a large extent on the development of computer-based learning schemes that are able to code operational knowledge and to use this knowledge for synthesizing optimal strategies for machining operations. The authors present a scheme that uses a feedforward neural network for the learning and synthesis task. Neural networks consist of a collection of

S. S. Rangwala; D. A. Dornfeld

1989-01-01

124

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.

125

Modes of operation of the slip ring induction machine in wind energy conversion systems  

Microsoft Academic Search

Two modes of operation of the slip ring induction machine are investigated: the double-output induction generator (DOIG) and the double-excited induction generator. The output power, power factor, efficiency, system displacement angle, and firing angle of the two are compared. An optimal scheme of operation combining both modes is proposed. It is shown that the power generated by the DEIG is

M. T. El Hagry; A. A. Mohamed; M. N. Iskander

1989-01-01

126

Shoulder muscle load and muscle fatigue among industrial sewing-machine operators  

Microsoft Academic Search

SummaryPhysiological responses to physical work were assessed for 29 female industrial sewing-machine operators during an 8-h working day under ordinary working conditions. During sewing-machine work, the average (left and right) static load in the trapezius muscle was 9% of the maximal electromyogram (EMG) amplitude (% EMGmax), while the average mean load was 15% EMGmax, and the average peak load was

Bente R. Jensen; Bente Schibye; Karen Sgaard; Erik B. Simonsen; Gisela Sjgaard

1993-01-01

127

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.

128

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

129

Optimization of Operation Sequence in CNC Machine Tools Using Genetic Algorithm  

NASA Astrophysics Data System (ADS)

The productivity of machine tools is significantly improved by using microcomputer based CAD/CAM systems for NC program generation. Currently, many commercial CAD/CAM packages that provide automatic NC programming have been developed and applied to various cutting processes. Many cutting processes machined by CNC machine tools. In this paper, we attempt to find an efficient solution approach to determine the best sequence of operations for a set of operations that located in asymmetrical locations and different levels. In order to find the best sequence of operations that achieves the shortest cutting tool travel path (CTTP), genetic algorithm is introduced. After the sequence is optimized, the G-codes that use to code for the travel time is created. CTTP can be formulated as a special case of the traveling salesman problem (TSP). The incorporation of genetic algorithm and TSP can be included in the commercial CAD/CAM packages to optimize the CTTP during automatic generation of NC programs.

Abu Qudeiri, Jaber; Yamamoto, Hidehiko; Ramli, Rizauddin

130

Musculoskeletal disorders of the neck and upper limb among sewing machine operators: a clinical investigation.  

PubMed

One hundred and seven women participated in a clinical study of an age-stratified random sample of sewing machine operators compared to a group of auxiliary nurses and home helpers. Four groups, according to years of being a sewing machine operator, consisted of: (controls) 25; (0-7 years) 21; (8-15 years) 25; and (more than 15 years) 36. The numbers of the main clinical diagnoses in the four groups were: cervicobrachial fibromyalgia (myofascial pain syndrome) 2, 4, 11, 24; cervical syndrome 0, 1, 3, 10; and rotator cuff syndrome 1, 1, 6, 11. The observed exposure-response relationship between clinical outcomes and years as a sewing machine operator was maintained when adjusting for current exposure to musculoskeletal strain and other potential confounders. Muscle palpation proved to be a reproducible examination with kappa values around 0.70. PMID:8311099

Andersen, J H; Gaardboe, O

1993-12-01

131

A GENERIC MECHANICS OF CUTTING APPROACH TO PREDICTIVE TECHNOLOGICAL PERFORMANCE MODELING OF THE WIDE SPECTRUM OF MACHINING OPERATIONS  

Microsoft Academic Search

The need for quantitatively reliable predictive models for the many technological machining performance measures to optimize the economic performance of machining operations, and to design machine tools and cutting tools that enhance this economic performance, has been highlighted. Also highlighted is the formidable task of establishing the required quantitative technological performance data and equations, and the gap between theory and

E. J. A. Armarego

1998-01-01

132

Machine learning at the operating room of the future : a comparison of machine learning techniques applied to operating room scheduling  

E-print Network

The quality of an operating room schedule is determined by the accuracy of the surgery duration estimation used. State of the art estimation algorithms consider only three surgery variables-procedure type, surgeon identity, ...

Davies, Samuel Ingraham, 1980-

2004-01-01

133

Particle Size Studies on Uranium Aerosols from Machining and Metallurgy Operations  

Microsoft Academic Search

Cascade impactors and optical measurements were used to estimate the ; particle size distribution of uranium aerosols that were dispersed during ; machining and various metallurgical operations. The mass median diameter of air-; borne foundry dust ranged from 2.0 to 4.5 ic . The largest mass ; median diameter range determined by cascade impactors was 0.4 to 3.9 ic ;

E. C. Hyatt; W. D. Moss; H. F. Schulte

1959-01-01

134

Development of hybrid predictive models and optimization techniques for machining operations  

Microsoft Academic Search

This paper presents a summary of recent developments in modeling and optimization of machining processes, focusing on turning and milling operations. With a brief analysis of past research on predictive modeling, the paper presents the analytical, numerical and empirical modeling efforts for 2D and 3D chip formation covering the development of a universal slip-line model, a comprehensive finite element model,

I. S. Jawahir; X. Wang

2007-01-01

135

An integrated approach to determining the sequence of machining operations for prismatic parts with interacting features  

Microsoft Academic Search

This paper proposed a framework for integrating artificial intelligence (AI) techniques and mechanistic models in the task of generating process plans for prismatic parts. The main issue of process planning addressed in this paper is the determination of the operation sequence for mechanical parts containing interacting features where machining of one feature might adversely affect the surface quality of other

Alan C. Lin; Shou-Yee Lin; Das Diganta; Wen F. Lu

1998-01-01

136

An experimental study of an ejector cycle refrigeration machine operating on R113  

Microsoft Academic Search

This paper discusses an ejector cycle refrigeration machine that can use a wide range of refrigerants including halocarbons. The feature of such a system is the possibility of using a low grade heat source such as solar energy and waste heat to operate the system. A theoretical analysis was carried out to select a suitable refrigerant for the system. The

Nehad Al-Khalidy

1998-01-01

137

Effect of training on the productivity and tenure of sewing machine operators  

Microsoft Academic Search

A significant determinant of the high rate of personnel turnover among a population of female sewing machine operators was inadequate initial training. 208 new trainees received either 1, 2, or 3 days' vestibule training. The longer the training, the lower the turnover rate, but the lower the productivity as well. Both effects were statistically significant, but the effects on productivity

Joel Lefkowitz

1970-01-01

138

Reliability of the Demand-Control Questionnaire for sewing machine operators.  

PubMed

The Demand-Control Questionnaire (DCQ), a 20-item scale that measures psychological work demands, job control and workplace social support, has frequently been used to assess occupational stress. The purpose of this study was to determine the test-retest reliability and internal consistency of the DCQ with sewing machine operators. Forty-six sewing machine operators completed the DCQ on two occasions with an 11-week time interval. A repeated measures analysis of variance model and subsequent application of generalizability theory were used to calculate the test-retest reliability of the subjects' ratings on the DCQ. Cronbach's alpha was used to determine the internal consistency of the scale. The test-retest reliability was 0.33 (95% confidence interval = 0.05-0.61), indicating fair reliability. Good internal consistency (Cronbach's alpha = 0.70) was found. The DCQ appears to be a reliable measure for assessing occupational stress in sewing machine operators. Workplaces need to place greater emphasis on the role of occupational stress in the prevention and treatment of musculoskeletal injuries among sewing machine operators. PMID:12441460

Williams, Renee M.; Sundelin, Gunnevi; Schmuck, Mary Lou

2001-01-01

139

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

140

A tele-micro machining system with operational environment transmission under a stereo-SEM  

Microsoft Academic Search

This paper describes a tele-micro machining system which works under a stereo SEM and has operational environment transmission capability. The system includes a 3-axis force sensing table, the signal from which is converted into auditory information to enhance the operability of the system. Furthermore, the cutting state in micro-cutting is reflected as force feedback to the master joystick using a

Mamoru MITSUISHI; Naohiko SUGITA; Takaaki NAGAO; Yotaro HATAMURA

1996-01-01

141

Determining reaction abilities of sewing machine operators in joining curved seams  

Microsoft Academic Search

In accordance with his\\/her psycho-physical abilities and degree of skill, regulating system in the operator's brain will match the speed of sewing operations, e.g. actual machine stitching speed, using a simple movement of the foot, to adapt it to his\\/her sensory and motoric reaction abilities. Workpiece in sewing is fed employing three degrees of freedom movement, i.e. using three independent

Dubravko Rogale

2003-01-01

142

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

143

76 FR 81518 - Notice of Issuance of Final Determination Concerning Laser-Based Multi-Function Office Machines  

Federal Register 2010, 2011, 2012, 2013, 2014

...presented, the assembly and programming of the office machines together...it is at their assembly and programming where the last substantial...formatter operates the HP Embedded Web Server, which allows remote...provided, the assembly and programming operations performed in...

2011-12-28

144

A Final Approach Trajectory Model for Current Operations  

NASA Technical Reports Server (NTRS)

Predicting accurate trajectories with limited intent information is a challenge faced by air traffic management decision support tools in operation today. One such tool is the FAA's Terminal Proximity Alert system which is intended to assist controllers in maintaining safe separation of arrival aircraft during final approach. In an effort to improve the performance of such tools, two final approach trajectory models are proposed; one based on polynomial interpolation, the other on the Fourier transform. These models were tested against actual traffic data and used to study effects of the key final approach trajectory modeling parameters of wind, aircraft type, and weight class, on trajectory prediction accuracy. Using only the limited intent data available to today's ATM system, both the polynomial interpolation and Fourier transform models showed improved trajectory prediction accuracy over a baseline dead reckoning model. Analysis of actual arrival traffic showed that this improved trajectory prediction accuracy leads to improved inter-arrival separation prediction accuracy for longer look ahead times. The difference in mean inter-arrival separation prediction error between the Fourier transform and dead reckoning models was 0.2 nmi for a look ahead time of 120 sec, a 33 percent improvement, with a corresponding 32 percent improvement in standard deviation.

Gong, Chester; Sadovsky, Alexander

2010-01-01

145

Shoulder muscle load and muscle fatigue among industrial sewing-machine operators.  

PubMed

Physiological responses to physical work were assessed for 29 female industrial sewing-machine operators during an 8-h working day under ordinary working conditions. During sewing-machine work, the average (left and right) static load in the trapezius muscle was 9% of the maximal electromyogram (EMG) amplitude (% EMGmax), while the average mean load was 15% EMGmax, and the average peak load was 23% EMGmax. The static load level was unrelated to the muscle strength of the sewing-machine operators, which for the group as a whole was within the normal range. The load levels remained unchanged during the working day, while changes in the EMG mean power frequency and zero crossing frequency rate occurred, both indicating the development of muscle fatigue in left and right trapezius muscle during the working day. In line with this, the rating of perceived exertion in the shoulder and neck region increased during the working day. Dividing the group of sewing-machine operators into two groups, those with the highest frequency and those with the lowest frequency of shoulder/neck troubles showed that the former group had significantly lower muscle strength, despite the fact that no differences in the surface EMG during sewing were found between the two groups. It was concluded that industrial sewing-machine work involves a pattern of shoulder muscle activity which induces fatiguing processes in the shoulder and neck regions. Furthermore, since the static shoulder muscle load was independent of muscle strength, factors other than working posture may be of significance for the static shoulder muscle load. PMID:8299620

Jensen, B R; Schibye, B; Sgaard, K; Simonsen, E B; Sjgaard, G

1993-01-01

146

Electromagnetic Power Absorption and Temperature Changes due to Brain Machine Interface Operation  

Microsoft Academic Search

To fully understand neural function, chronic neural recordings must be made simultaneously from 10s or 100s of neurons. To\\u000a accomplish this goal, several groups are developing brain machine interfaces. For these devices to be viable for chronic human\\u000a use, it is likely that they will need to be operated and powered externally via a radiofrequency (RF) source. However, RF\\u000a exposure

Tamer S. Ibrahim; Doney Abraham; Robert L. Rennaker

2007-01-01

147

Sensorless control of reluctance machines at arbitrary operating conditions including standstill  

Microsoft Academic Search

Reluctance machines with three-phase stator windings and damperless rotors are usually operated in a closed-loop rotor-oriented control. The necessary position encoder reduces robustness considerably. In order to replace this sensor by a position-detecting algorithm based on electrical measurements, two methods are presented, well-suited to low velocity (INFORM model) and high velocity (EMF model), respectively. Based on this information, a Kalman

M. Schroedl; P. Weinmeier

1994-01-01

148

Evaluation of a spindle-based force sensor for monitoring and fault diagnosis of machining operations  

Microsoft Academic Search

This paper presents an evaluation of a spindle-based force sensor, the force ring, which is a strong candidate for in-process monitoring and fault diagnosis of machining operations. The evaluation criteria include the effect of integration of the force ring on the dynamics of the spindle, the drift behavior due to temperature change inside the spindle, the cross-talk between the channels,

Martin B. Jun; O. Burak Ozdoganlar; Richard E. DeVor; Shiv G. Kapoor; Andreas Kirchheim; Georges Schaffner

2002-01-01

149

Prevalence of persistent neck and upper limb pain in a historical cohort of sewing machine operators.  

PubMed

Four hundred and twenty-four sewing machine operators from a historical cohort of garment industry workers answered questionnaires concerning musculoskeletal symptoms and job exposure. They were compared with 781 women from the general population of the region and an internal control group of 89 women from the garment industry. The risk for persistent neck and shoulder complaints increased with years of being a sewing machine operator: (up to seven years, eight to fifteen years, and more than fifteen years: prevalence proportion ratio 1.8, 3.5 and 4.4 [neck] and 1.5, 4 and 6.8 [shoulder] compared with the controls [n = 781]). The exposure-response relationships remained when adjusted for potential confounders, of which age, current shoulder-neck exposure, and child bearing were the most contributing. The study revealed that work for more than eight years as a sewing machine operator probably has a cumulative deleterious effect on the neck and shoulders. PMID:8311098

Andersen, J H; Gaardboe, O

1993-12-01

150

Health problems among operators of plastic welding machines and exposure to radiofrequency electromagnetic fields.  

PubMed

To study possible medical effects of high radiofrequency radiation (RF), 113 Swedish men and women were studied by means of a structured interview and rating of subjective symptoms. A test session was included in order to examine coordination and muscular function of the hands. A neurological test concerning two-point discrimination (2-PD) was also done. As referents, 23 women, sewing machine operators and assembly workers, were chosen, interviewed and likewise tested. Exposure measurements were taken of the RF fields around the welding machines. The present Swedish ceiling value of 250 W/m2 for the equivalent power density was exceeded in more than 50% of the machines. The highest leakage fields, both for electric and magnetic fields, were found near machines used in factories for ready-made clothing, which gave a high exposure to the hands. Irritative eye symptoms were reported by 23% of the men and 40% of the women. A group of 27 persons was selected for a clinical eye examination and checked by photographs, and nine persons had modest conjunctivitis. A high prevalence of numbness in hands, especially among women, was found. A significantly impaired 2-PD was found in the exposed women as compared to the referent group. The pregnancy outcome for 305 female plastic welders during 1974-1984 did not show any significant differences with the Swedish average concerning malformation or prenatal mortality. PMID:3372031

Kolmodin-Hedman, B; Hansson Mild, K; Hagberg, M; Jnsson, E; Andersson, M C; Eriksson, A

1988-01-01

151

Operational Test Results of the Final Approach Spacing Tool  

NASA Technical Reports Server (NTRS)

A prototype decision support tool for terminal area air traffic controllers, referred to as the Final Approach Spacing Tool (FAST), was recently evaluated in operation with live air traffic at the Dallas/Fort Worth Terminal Radar Approach Control (TRACON) facility in the United States. Controllers utilized the FAST system's runway assignment and sequence advisories to manage and control arrival traffic during more than twenty five peak rush traffic periods. The system performed well resulting in capacity increases at the airport of 10-20% depending on weather and airport conditions. As a result of these tests, the US Federal Aviation Administration (FAA) is proceeding with plans to further develop the prototype FAST system for national deployment at five to ten TRACONs within the United States during the next five years. This paper will present the results of these tests including data on the FAST system impact on airport capacity, aircraft flight times in the terminal area, delay reduction, tower operations including ground movement, and human factors data including workload assessments.

Davis, Thomas J.; Isaacson, Douglas R.; Robinson, John E., III; Lee, Katharine K.; Tobias, Leonard (Technical Monitor)

1996-01-01

152

Modeling of Eddy-Current Loss of Electrical Machines and Transformers Operated by Pulsewidth-Modulated Inverters  

Microsoft Academic Search

Pulsewidth-modulated (PWM) inverters are used more and more to operate electrical machines and to interface renewable energy systems with the utility grid. However, there are abundant high-frequency harmonics in the output voltage of a PWM inverter, which increase the iron losses and result in derating of the machine or transformer connected to them. Predicting the iron losses caused by the

Ruifang Liu; Chris Chunting Mi; D. W. Gao

2008-01-01

153

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

154

29 CFR 570.63 - Occupations involved in the operation of paper-products machines, scrap paper balers, and paper...  

Code of Federal Regulations, 2010 CFR

...Labor 3 2010-07-01 2010-07-01 false Occupations involved in the operation of paper-products machines, scrap paper balers, and paper box compactors (Order 12). 570.63 Section 570.63 Labor Regulations Relating...

2010-07-01

155

An Hybrid-Excited Flux-Switching Machine for High Speed DC-Alternator Applications  

E-print Network

and the operation principle. Finally, the thermal behavior of the prototype machine is investigated through) machines was extensively studied in the past [1]. Flux weakening operation allows PM motors to operate over al. [13] (c) The high speed operation of Permanent Magnet machine is severely strained by mechanical

Paris-Sud XI, Université de

156

Project 1: Process of designing Inoculation machine I Inoculation is an essential operation in microbiological labs.  

E-print Network

simulation. Step 4. Detailed design and engineering Pneumatic cylinders, stepper motors, pulleys and tackles analyzed before finally determine the structure and configuration of each component. Pneumatic cylinders which commonly occurs in manual operation. Step 6. Extensive testing and comparison experiments Under

Matsuoka, Yoky

157

Comparison of Multiobjective Evolutionary Algorithms for Operations Scheduling under Machine Availability Constraints  

PubMed Central

Many of the problems that arise in production systems can be handled with multiobjective techniques. One of those problems is that of scheduling operations subject to constraints on the availability of machines and buffer capacity. In this paper we analyze different Evolutionary multiobjective Algorithms (MOEAs) for this kind of problems. We consider an experimental framework in which we schedule production operations for four real world Job-Shop contexts using three algorithms, NSGAII, SPEA2, and IBEA. Using two performance indexes, Hypervolume and R2, we found that SPEA2 and IBEA are the most efficient for the tasks at hand. On the other hand IBEA seems to be a better choice of tool since it yields more solutions in the approximate Pareto frontier. PMID:24489502

Frutos, M.; Mndez, M.; Tohm, F.; Broz, D.

2013-01-01

158

Comparison of multiobjective evolutionary algorithms for operations scheduling under machine availability constraints.  

PubMed

Many of the problems that arise in production systems can be handled with multiobjective techniques. One of those problems is that of scheduling operations subject to constraints on the availability of machines and buffer capacity. In this paper we analyze different Evolutionary multiobjective Algorithms (MOEAs) for this kind of problems. We consider an experimental framework in which we schedule production operations for four real world Job-Shop contexts using three algorithms, NSGAII, SPEA2, and IBEA. Using two performance indexes, Hypervolume and R2, we found that SPEA2 and IBEA are the most efficient for the tasks at hand. On the other hand IBEA seems to be a better choice of tool since it yields more solutions in the approximate Pareto frontier. PMID:24489502

Frutos, M; Mndez, M; Tohm, F; Broz, D

2013-01-01

159

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

160

Incidence of MSDs and neck and back pain among logging machine operators in the southern U.S.  

PubMed

There are limited data about the incidence and prevalence of musculoskeletal disorders (MSDs) among loggers in the southern U.S. despite the risk factors associated with these occupations. Risk factors are both personal (age, body mass index, etc.) and job-related (awkward postures, repetitive hand and foot movements, vibration, etc.). A survey was conducted to estimate the incidence of self-reported pain and diagnosed MSDs and to study the relationship with known risk factors. Respondents were loggers attending training and continuing education classes. Respondents were asked to identify personal attributes, machine use, awkward postures, repetitive movements, and recent incidence of pain and medical diagnoses. All were male with an average age of 44 (range of 19-67) and an average body mass index of 31.3. Most were machine operators (97%) who have worked in the logging industry for an average of 22.9 years. Most machines identified were manufactured within the past ten years (average machine age 6.7 years). For machine operators, 10.5% (16) reported an MSD diagnosis, 74.3% (113) reported at least mild back pain, and 71.7% (109) reported at least mild neck pain over the past year. Further analysis attempted to identify an association between personal attributes, machine use, posture, and pain. Risk factors related to machine use may be biased since most survey respondents had considerable choice or control in working conditions, as they were firm owners and/or supervisors. PMID:25174152

Lynch, S M; Smidt, M F; Merrill, P D; Sesek, R F

2014-07-01

161

Graphic Arts--Offset Press Operator/Duplicating Machine. TI-622. Instructor's Manual and Student Learning Activity Guide.  

ERIC Educational Resources Information Center

This instructor's manual and student learning activity guide comprise a kit for a graphic arts activity on offset press operator/duplicating machine. Purpose stated for the activity is to provide the student with an understanding of the basic operation involved in the production of printed matter in the graphic communications industry through the

Michelsen, Robert F.

162

An Inquiry into Adjustable Speed Operation of a Pumped Hydro Plant Part 1 - Machine Design and Performance  

Microsoft Academic Search

The possibility of variable speed operation of a pumped hydro plant is proposed by providing an asynchronous tie between the hydro site and main ac grid. Variable speed operation results in a substantial improvement in system efficiency and improved system performance, as well as new flexibility in hydro plant siting and machine design. The problems associated with applying conventional synchronous

R. J. Kerkman; T.A. Lipo; W. G. Newman; J. E. Thirkell

1980-01-01

163

Machine Tool Technology. Automatic Screw Machine Troubleshooting & Set-Up Training Outlines [and] Basic Operator's Skills Set List.  

ERIC Educational Resources Information Center

This set of two training outlines and one basic skills set list are designed for a machine tool technology program developed during a project to retrain defense industry workers at risk of job loss or dislocation because of conversion of the defense industry. The first troubleshooting training outline lists the categories of problems that develop

Anoka-Hennepin Technical Coll., Minneapolis, MN.

164

Demonstration of tunnel-boring machine for coal-mine development. Final technical report  

Microsoft Academic Search

A concept of mine development using a single entry bored with a tunnel driving machine was designed and completed. The effort was undertaken in hopes that the single entry could be rapidly advanced through the strata along the coal seam and increase access to coal reserves at a much faster rate than present mining systems. The concept used was proven

J. E. Tisdale; D. R. Skidmore

1979-01-01

165

Develop a field grid system for yield mapping and machine control. Final report, Invention 544  

SciTech Connect

The objective of this project was to build and test the Field Grid Sense system for yield mapping and machine control during harvesting. Secondly, to use Field Grid Sense system with chemical application equipment to demonstrate a workable in-field system. This document contains summarized quarterly reports.

NONE

1995-12-15

166

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

167

Control of Soft Machines using Actuators Operated by a Braille Display  

PubMed Central

One strategy for actuating soft machines (e.g., tentacles, grippers, and simple walkers) uses pneumatic inflation of networks of small channels in an elastomeric material. Although the management of a few pneumatic inputs and valves to control pressurized gas is straightforward, the fabrication and operation of manifolds containing many (>50) independent valves is an unsolved problem. Complex pneumatic manifoldsoften built for a single purposeare not easily reconfigured to accommodate the specific inputs (i.e., multiplexing of many fluids, ranges of pressures, and changes in flow rates) required by pneumatic systems. This paper describes a pneumatic manifold comprising a computer-controlled braille display and a micropneumatic device. The braille display provides a compact array of 64 piezoelectric actuators that actively close and open elastomeric valves of a micropneumatic device to route pressurized gas within the manifold. The positioning and geometries of the valves and channels in the micropneumatic device dictate the functionality of the pneumatic manifold, and the use of multi-layer soft lithography permits the fabrication of networks in a wide range of configurations with many possible functions. Simply exchanging micropneumatic devices of different designs enables rapid reconfiguration of the pneumatic manifold. As a proof of principle, a pneumatic manifold controlled a soft machine containing 32 independent actuators to move a ball above a flat surface. PMID:24196070

Mosadegh, Bobak; Mazzeo, Aaron D.; Shepherd, Robert F.; Morin, Stephen A.; Gupta, Unmukt; Sani, Idin Zhalehdoust; Lai, David; Takayama, Shuichi; Whitesides, George M.

2013-01-01

168

Development of a remotely operated concrete decontamination vehicle. Final report  

Microsoft Academic Search

This document describes the design, fabrication, testing and demonstration of a remotely operated (tethered) concrete scabbling vehicle. This vehicle was designed to remotely decontaminate concrete floor surfaces in nuclear facilities, and thereby increase productivity and reduce operator radiation exposure. The completed unit consists of a tethered chassis, a portable remote control console, a seven cylinder scabbler head, and a vacuum

H. G. Baker; A. V. Cugini; S. Lefkowitz

1985-01-01

169

Realization of universal optimal quantum machines by projective operators and stochastic maps  

NASA Astrophysics Data System (ADS)

Optimal quantum machines can be implemented by linear projective operations. In the present work a general qubit symmetrization theory is presented by investigating the close links to the qubit purification process and to the programmable teleportation of any generic optimal antiunitary map. In addition, the contextual realization of the N?M cloning map and of the teleportation of the N?(M-N) universal-NOT (UNOT) gate is analyzed by a very general angular momentum theory. An extended set of experimental realizations by state symmetrization linear optical procedures is reported. These include the 1?2 cloning process, the UNOT gate and the quantum tomographic characterization of the optimal partial transpose map of polarization encoded qubits.

Sciarrino, F.; Sias, C.; Ricci, M.; de Martini, F.

2004-11-01

170

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

171

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

172

A knowledge based model of electric utility operations. Final report  

SciTech Connect

This report consists of an appendix to provide a documentation and help capability for an analyst using the developed expert system of electric utility operations running in CLIPS. This capability is provided through a separate package running under the WINDOWS Operating System and keyed to provide displays of text, graphics and mixed text and graphics that explain and elaborate on the specific decisions being made within the knowledge based expert system.

NONE

1993-08-11

173

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

Code of Federal Regulations, 2011 CFR

...oiling, or cleaning any horizontal or vertical dough mixer; batter mixer; bread dividing, rounding, or molding machine; dough brake; dough sheeter; combination bread slicing and wrapping machine; or cake cutting band saw. (2) The...

2011-07-01

174

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

Code of Federal Regulations, 2010 CFR

...oiling, or cleaning any horizontal or vertical dough mixer; batter mixer; bread dividing, rounding, or molding machine; dough brake; dough sheeter; combination bread slicing and wrapping machine; or cake cutting band saw. (2) The...

2010-07-01

175

Methods, systems and apparatus for controlling third harmonic voltage when operating a multi-space machine in an overmodulation region  

SciTech Connect

Methods, system and apparatus are provided for controlling third harmonic voltages when operating a multi-phase machine in an overmodulation region. The multi-phase machine can be, for example, a five-phase machine in a vector controlled motor drive system that includes a five-phase PWM controlled inverter module that drives the five-phase machine. Techniques for overmodulating a reference voltage vector are provided. For example, when the reference voltage vector is determined to be within the overmodulation region, an angle of the reference voltage vector can be modified to generate a reference voltage overmodulation control angle, and a magnitude of the reference voltage vector can be modified, based on the reference voltage overmodulation control angle, to generate a modified magnitude of the reference voltage vector. By modifying the reference voltage vector, voltage command signals that control a five-phase inverter module can be optimized to increase output voltages generated by the five-phase inverter module.

Perisic, Milun; Kinoshita, Michael H; Ranson, Ray M; Gallegos-Lopez, Gabriel

2014-06-03

176

Recycle process for depleted-uranium machining chips by vacuum-induction remelt. Final report  

Microsoft Academic Search

The objective of the effort described in this report was to develop a method by which oxidized machining chips of depleted uranium, DU-3\\/4 titanium, generated in the production of large caliber penetrators, could be recycled as part of the charge in melting and casting of the alloy. The melting of this material was carried out by means of vacuum-induction techniques.

C. E. Latham-Brown; D. Vanderkooi

1987-01-01

177

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

178

An application of multiple criteria decision making principles for planning machining operations  

Microsoft Academic Search

Some recently introduced concepts of multiple criteria decision making (MCDM), such as the range of compromise and its use in dimensionless weighting of the objectives, are employed to formulate machining recommendations under multiple machining criteria. Two approaches are presented and applied to the machining of 390 die cast aluminum alloy. The first is a graphical presentation of nondominated solutions from

M. Ghiassi; R. E. Devor; M. I. Dessouky; B. A. Kijowski

1984-01-01

179

Energetic optimization of a piezo-based touch-operated button for man-machine interfaces  

NASA Astrophysics Data System (ADS)

This paper discusses the optimization of a touch-operated button for man-machine interfaces based on piezoelectric energy harvesting techniques. In the mechanical button, a common piezoelectric diaphragm, is assembled to harvest the ambient energy from the source, i.e. the operators touch. Under touch force load, the integrated diaphragm will have a bending deformation. Then, its mechanical strain is converted into the required electrical energy by means of the piezoelectric effect presented to the diaphragm. Structural design (i) makes the piezoceramic work under static compressive stress instead of static or dynamic tensile stress, (ii) achieves a satisfactory stress level and (iii) provides the diaphragm and the button with a fatigue lifetime in excess of millions of touch operations. To improve the buttons function, the effect of some key properties consisting of dimension, boundary condition and load condition on electrical behavior of the piezoelectric diaphragm are evaluated by electromechanical coupling analysis in ANSYS. The finite element analysis (FEA) results indicate that the modification of these properties could enhance the diaphragm significantly. Based on the key properties different contributions to the improvement of the diaphragms electrical energy output, they are incorporated into the piezoelectric diaphragms redesign or the structural design of the piezo-based button. The comparison of the original structure and the optimal result shows that electrical energy stored in the diaphragm and the voltage output are increased by 1576% and 120%, respectively, and the volume of the piezoceramic is reduced to 33.6%. These results will be adopted to update the design of the self-powered button, thus enabling a large decrease of energy consumption and lifetime cost of the MMI.

Sun, Hao; de Vries, Theo J. A.; de Vries, Rene; van Dalen, Harry

2012-03-01

180

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-Comt 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. PMID:22057869

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

2012-01-01

181

CAISI Operational Assessment (OA) data collection results. Final report  

SciTech Connect

One of the lessons learned from Operation Desert Shield/Storm was the inability of deployed Combat Service Support (CSS) computers to exchange data effectively in a battlefield environment. The work-around solution to this previously identified problem has been to physically carry floppy disks between computers. A General Officer Steering Committee, directed by the Vice Chief of Staff of the Army, determined that immediate corrective action was necessary to ensure viability of the CSS Battlefield Mission Area. The study recommended that a three-phased system development plan address short-, mid- and long-term CSS automation communication interface requirements. In response to this study, Program Executive Office (PEO) Standard Army Management Information System (STAMIS) authorized the development of the CSS Automated Information System Interface (CAISI). Phase I (Near-Term) equipped the {open_quotes}first to fight{close_quotes} Contingency Corps units. Phase II (Mid-Term) is being fielded to the remainder of Force Package One units in the active force. Phase III (Long-Term) will equip the remaining units. CAISI is now in the early stages of Phase II fielding. Prior to full Phase II fielding, CAISI must be approved for production by a Milestone III decision authority. Part of the data that will be used in the Milestone III decision is a demonstration of the CAISI`s operational suitability, as assessed by the US Army Operational Test and Evaluation Command (OPTEC). This assessment will be performed through an Operational Assessment (OA) using data provided from previous technical testing, such as the CAISI Customer User Test (CUT), and a field training exercise conducted by units of the XVIII Airborne Corps. The field training exercise data collection took place during two events.

NONE

1997-01-31

182

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

183

The Pica-B Computer An Abstract Target Machine For A Transportable Single-User Operating Environment  

Microsoft Academic Search

The Pica-B computer is a simple abstract machine designed to: 1. facilitate the portability of a simple single user operating environment written in BCPL. 2. serve the pedagogic goal of providing a basis for teaching concepts of hardware and system architecture, systems programming and programming language design in a unified setting, and 3. serve as a possible solution to the

Harvey Abramson; Mark Fox; Michael Gorlick; Vince Manis; John Peck

1978-01-01

184

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

185

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

Microsoft Academic Search

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

R H Westgaard; T Jansen

1992-01-01

186

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

187

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

188

Final Report - Membranes and MEA's for Dry, Hot Operating Conditions  

SciTech Connect

The focus of this program was to develop a new Proton Exchange Membrane (PEM) which can operate under hotter, dryer conditions than the state of the art membranes today and integrate it into a Membrane Electrode Assembly (MEA). These MEA's should meet the performance and durability requirements outlined in the solicitation, operating under low humidification conditions and at temperatures ranging from -20???ºC to 120???ºC, to meet 2010 DOE technical targets for membranes. This membrane should operate under low humidification conditions and at temperatures ranging from -20???ºC to 120???ºC in order to meet DOE HFCIT 2010 commercialization targets for automotive fuel cells. Membranes developed in this program may also have improved durability and performance characteristics making them useful in stationary fuel cell applications. The new membranes, and the MEA?¢????s comprising them, should be manufacturable at high volumes and at costs which can meet industry and DOE targets. This work included: A) Studies to better understand factors controlling proton transport within the electrolyte membrane, mechanisms of polymer degradation (in situ and ex situ) and membrane durability in an MEA; B) Development of new polymers with increased proton conductivity over the range of temperatures from -20???ºC to 120???ºC and at lower levels of humidification and with improved chemical and mechanical stability; C) Development of new membrane additives for increased durability and conductivity under these dry conditions; D) Integration of these new materials into membranes and membranes into MEA?¢????s, including catalyst and gas diffusion layer selection and integration; E) Verification that these materials can be made using processes which are scalable to commercial volumes using cost effective methods; F) MEA testing in single cells using realistic automotive testing protocols. This project addresses technical barriers A (Durability) and C (Performance) from the Fuel Cells section of the 2005 Hydrogen, Fuel Cells and Infrastructure Technologies Program Multi-Year R&D Plan. In the course of this four-year program we developed a new PEM with improved proton conductivity, chemical stability and mechanical stability. We incorporated this new membrane into MEAs and evaluated performance and durability.

Hamrock, Steven J.

2011-06-30

189

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

190

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.

191

Autonomous proximity operations using machine vision for trajectory control and pose estimation  

NASA Technical Reports Server (NTRS)

A machine vision algorithm was developed which permits guidance control to be maintained during autonomous proximity operations. At present this algorithm exists as a simulation, running upon an 80386 based personal computer, using a ModelMATE CAD package to render the target vehicle. However, the algorithm is sufficiently simple, so that following off-line training on a known target vehicle, it should run in real time with existing vision hardware. The basis of the algorithm is a sequence of single camera images of the target vehicle, upon which radial transforms were performed. Selected points of the resulting radial signatures are fed through a decision tree, to determine whether the signature matches that of the known reference signatures for a particular view of the target. Based upon recognized scenes, the position of the maneuvering vehicle with respect to the target vehicles can be calculated, and adjustments made in the former's trajectory. In addition, the pose and spin rates of the target satellite can be estimated using this method.

Cleghorn, Timothy F.; Sternberg, Stanley R.

1991-01-01

192

Neck and shoulder complaints among sewing-machine operators: a study concerning frequency, symptomatology and dysfunction.  

PubMed

The occupation of sewing-machine operators (SMO) involves monotonous and repetitive tasks, performed in a work position equivalent to a static component of muscular load on the neck and shoulder. The present study concerns the occurrence of neck-shoulder problems in a population of SMO. A total of 224 SMO from four textile factories in the western part of Sweden were subjected to a comprehensive questionnaire about demographic, vocational, medical and psychosocial data. The Nordic Ministry Questionnaire specifically directed towards neck-shoulder complaints showed a prevalence rate during the last 12 months of 75% and during the last seven days a rate of 51%. Daily problems were experienced by 26%. Some 27% had had problems leading to restraints in work time and 37% in leisure time. Those SMO screening positive were clinically examined in an attempt to describe the clinical picture behind the complaints. Diagnoses were made according to specific criteria. The tension neck syndrome (TNS) was most frequent, followed by the cervical syndrome. In half of those examined, symptoms and findings were too unspecific for diagnosis. A positive correlation between the TNS and working hours per week suggests a daily prolonged static load on the neck and shoulder to be of importance for neck-shoulder problems among the SMO. PMID:15676820

Blder, S; Barck-Holst, U; Danielsson, S; Ferhm, E; Kalpamaa, M; Leijon, M; Lindh, M; Markhede, G

1991-08-01

193

Modeling of spindle-bearing and machine tool systems for virtual simulation of milling operations  

Microsoft Academic Search

This paper presents a general, integrated model of the spindle bearing and machine tool system, consisting of a rotating shaft, tool holder, angular contact ball bearings, housing, and the machine tool mounting. The model allows virtual cutting of a work material with the numerical model of the spindle during the design stage. The proposed model predicts bearing stiffness, mode shapes,

Yuzhong Cao; Y. Altintas

2007-01-01

194

The JET machine: Design, construction, and operation of the major systems  

Microsoft Academic Search

The basic parameters of the Joint European Torus (JET) machine are presented together with the reasons that guided their choice. The design principles followed during the conceptual phase are also described. Existing technology and modular design were used as far as possible, with a view to reducing the technological risk and to make the machine easily maintained. For each of

M. Huguet; K. Dietz; J. L. Hemmerich; J. R. Last

1987-01-01

195

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

Microsoft Academic Search

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

Gabriel Gallegos-Lopez; James M. Nagashima; Milun Perisic; Silva Hiti

2012-01-01

196

Experience with directional couplers for partial discharge measurements on rotating machines in operation  

Microsoft Academic Search

Manitoba Hydro applied directional couplers for on-line partial discharge measurements on selected rotating machines beginning in 1981. With the instrumentation available at that time the measurement was vulnerable to the effects of noise external to the machine. There have been improvements in the available coupling capacitors which have allowed selection of more optimum measuring locations. In addition, new instrumentation has

W. McDermid; J. C. Bromley

1999-01-01

197

Multiple-objective optimisation of machining operations based on neural networks  

Microsoft Academic Search

Metal cutting plays an important role in manufacturing industries. Optimisation of cutting parameters represents a key component in machining process planning. In this paper, a neural network based approach to multiple-objective optimization of cutting parameters is presented. First, the problem of determining the optimum machining parameters is formulated as a multiple-objective optimization problem. Then, neural networks are proposed to represent

Jun Wang

1993-01-01

198

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

199

Incident management systems and strategies: Traffic Operations Center operations manual. Final report, December 1997--October 1998  

SciTech Connect

The Arizona Department of Transportation (ADOT) Traffic Operations Center (TOC) opened during 1995 in Phoenix. Procedures for its operation were developed on an informal basis and copies were maintained by each operator. In late 1997, the firms of Lima and Associates and PB Farradyne were retained to research existing programs in three states. This was done to determine if the procedures at the Phoenix TOC were adequate and whether additional procedures needed to be implemented.

Lima, P.M.; O`Laughlin, J.B.

1998-10-01

200

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

201

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

PubMed

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. PMID:22587048

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

2012-03-01

202

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

203

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

204

Applied machine vision of plants: a review with implications for field deployment in automated farming operations  

Microsoft Academic Search

Automated visual assessment of plant condition, specifically foliage wilting, reflectance and growth parameters, using machine\\u000a vision has potential use as input for real-time variable-rate irrigation and fertigation systems in precision agriculture.\\u000a This paper reviews the research literature for both outdoor and indoor applications of machine vision of plants, which reveals\\u000a that different environments necessitate varying levels of complexity in both

C. L. McCarthy; N. H. Hancock; S. R. Raine

2010-01-01

205

The self-excitation process in electrical rotating machines operating in pulsed power regime  

Microsoft Academic Search

The self-excitation process in pulsed air-core rotating generators is fundamental in assuring record values of power density and compactness. This paper analyzes the conditions for the self-excitation process in pulsed electrical machines used as power supplies for electromagnetic launchers, using the analogy and methods of the positive-feedback in control systems. In the classical ferromagnetic electrical machines in the self-excitation process,

M. D. Driga; S. B. Pratap; A. W. Walls; J. R. Kitzmiller

2001-01-01

206

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

DOEpatents

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

207

Control strategies for power smoothing using a flywheel driven by a sensorless vector-controlled induction machine operating in a wide speed range  

Microsoft Academic Search

This paper presents a novel control strategy for power smoothing. The system is based on a sensorless vector-controlled induction machine driving a flywheel. The problem of regulating the DC-link voltage against input power surges or sudden changes in load demand is addressed. The induction machine is controlled to operate in a wide speed range by using flux weakening above rated

Roberto Crdenas; Rubn Pea; Greg M. Asher; Jon Clare; Ramn Blasco-Gimnez

2004-01-01

208

THE UNIFIED-GENERALIZED MECHANICS OF CUTTING APPROACHA STEP TOWARDS A HOUSE OF PREDICTIVE PERFORMANCE MODELS FOR MACHINING OPERATIONS  

Microsoft Academic Search

This paper presents the series of on-going investigations, which led to the development of the Unified-Generalized Mechanics of Cutting Approach to predictive modelling of various technological performance measures for the wide spectrum of machining operations used in practice. It is shown that this approach involved the development of generalized mechanics of cutting analyses of the cutting processes for machining with

E. J. A. Armarego

2000-01-01

209

ME 350-Machine Tool Operation for Engineers ABET EC2000 syllabus  

E-print Network

week; 0 minutes 3. Lab: 2 per week; 180 minutes Design Assignments: Casting Project: Each student gage, and optical comparator. 8 weeks CNC (Computer Numerical Control) CAD/CAM Project: Use of CAD Objectives: · Develop the engineering student's understanding of the capabilities and limitations of machine

Ben-Yakar, Adela

210

Synchronous Machine Operational Impeadances From Low Voltage Measurements at the Stator Terminals  

Microsoft Academic Search

Models of a synchronous machine for use in stability studies have been derived by measurements off-line at standstill. The method involves accurate determination of magnitude and phase of the impedance as seen at the stator terminals, for a range of frequency from 0.005 to 100 Hz. The data obtained pertains particularly to establishment of parameters for equivalent rotor circuits of

W. Watson; G. Manchur

1974-01-01

211

Machine Shop. Module 4: Power Saw and Drill Press Operation. Instructor's Guide.  

ERIC Educational Resources Information Center

This document consists of materials for a six-unit course on the following topics: (1) power saw safety and maintenance; (2) cutting stock to length; (3) band machining and contouring; (4) drill press types and safety; (5) drill press work-holding devices; and (6) tools and tool holders. The instructor's guide begins with a list of competencies

Walden, Charles H.; Daniel, Bill

212

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

213

When is light work heavy? Components of the physical workload of sewing machine operators working at piecework rates.  

PubMed

Epidemiologists have associated the job of sewing machine operators with a high incidence of musculoskeletal and other health problems, despite its classifications as light work according to energy expenditure criteria. An ergonomic analysis was undertaken in a trouser factory in order to describe components of the physical load of this work: force exerted, repetitions, time allocation and postures. Work activity of ten operators was observed and timed in situ, and forces were measured with a dynamometer. The time required to sew one seam is very short, 10-15 s per trouser leg. This short cycle is repeated more than 1500 times during the work day, involving quasi-continuous movements of the same parts of the body. The fact that movements are repeated so many times means that small details of the task assume a great importance. During the work day, a substantial force is exerted, only part of which can be measured with current technology. By these measurements, operators lift an average 406.1 kg of trousers per day and exert an average total force of 2858.4 kg with the upper limbs and 24 267.9 kg with the lower limbs. The work posture is static: seated with upper back curved and head bent over the sewing machine. Movements of the upper limbs involve abduction and adduction of the shoulders while exerting a force. For the same task, there is considerable variation in the dimensions of workstations. Interviews were conducted to determine the types of musculoskeletal complaints. The components of work activity could be treated to these complaints and to existing epidemiological data on musculoskeletal problems among sewing machine operators. This type of detailed examination can be applied by health and safety personnel to identify task components which could be changed to minimize the probability of musculoskeletal problems. PMID:15676875

Vezina, N; Tierney, D; Messing, K

1992-08-01

214

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

Microsoft Academic Search

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

Rod

1991-01-01

215

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

216

Optimal use of human and machine resources for Space Station assembly operations  

NASA Technical Reports Server (NTRS)

This paper investigates the issues involved in determining the best mix of human and machine resources for assembly of the Space Station. It presents the current Station assembly sequence, along with descriptions of the available assembly resources. A number of methodologies for optimizing the human/machine tradeoff problem have been developed, but the Space Station assembly offers some unique issues that have not yet been addressed. These include a strong constraint on available EVA time for early flights and a phased deployment of assembly resources over time. A methodology for incorporating the previously developed decision methods to the special case of the Space Station is presented. This methodology emphasizes an application of multiple qualitative and quantitative techniques, including simulation and decision analysis, for producing an objective, robust solution to the tradeoff problem.

Parrish, Joseph C.

1988-01-01

217

Enabling flexibility on a dual head placement machine by optimizing platform-tray-feeder picking operations  

Microsoft Academic Search

The typical circuit card assembly line includes one or more dual head placement machines (DHPMs), which are capable of highly\\u000a accurate placement and promise the flexibility to assemble a broad variety of circuit card types, each in minimal time. Each\\u000a DHPM stages components for picking from feeder racks and platform tray feeders (PTFs), which are well suited for components\\u000a that

Wilbert E. Wilhelm; Xiaoyan Zhu

2009-01-01

218

Circular tests for HSM machine tools: Bore machining application  

E-print Network

operations lies in understanding the impact of machine tool behaviour on machining time and part qualityCircular tests for HSM machine tools: Bore machining application Abstract: Today's High-Speed Machining (HSM) machine tool combines productivity and part quality. The difficulty inherent in HSM

Paris-Sud XI, Université de

219

Theory of Molecular Machines. I. Channel Capacity of Molecular Machines  

E-print Network

that the machine could "gain" during its operation. The maximum possible information gain is a func- tion in the operation ¡ dspace¢ : Cy £ dspace log2 ¡ Py¤ Ny Ny ¢ bits per operation. This "machine capacity" is closely of the molecular machine's operation. Thus, the capacity of a molecular machine is sharply limited

Schneider, Thomas D.

220

A low cost remotely operable cutting machine for segmenting metal clad ceramic fuel pellets  

NASA Astrophysics Data System (ADS)

Cutting of irradiated zircaloy metal clad ceramic fuel pellets requires a special cutting saw that can be remotely operated. The remote operation is essential because of the pyrophoric nature of zircaloy metal and high radiation field associated with the irradiated fuel elements. Conventional saws cannot meet the operational requirements because these are not readily amenable for remote operation and maintenance. Hence we have developed a new laboratory scale cutting saw for cutting radioactive samples remotely.

Ravi sankar, G.; Manivannan, R.; Anandkumar, A.; Subramanian, S.; Antony, M. P.; Vasudeva Rao, P. R.

1997-03-01

221

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

222

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

223

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

224

Tamper-Resistant Execution in an Untrusted Operating System Using A Virtual Machine Monitor  

Microsoft Academic Search

Software applications today face constant threat of tampering because of the vulnerability in operating systems and their permissive interface. Unfortunately, existing tamper-resistance approaches often require non-trivial amount of changes to core CPU architectures, operating systems and\\/or applications. In this paper, we propose an approach that requires only minimal changes to existing commodity oper- ating systems running on commodity hardware without

Haibo Chen; Fengzhe Zhang; Cheng Chen; Ziye Yang; Rong Chen; Binyu Zang; Wenbo Mao

225

A structured approach to the automatic planning of machining operations for rotational parts based on computer integration of standard design and process data  

Microsoft Academic Search

The traditional procedure for developing a manufacturing process plan involves a number of interconnected steps beginning\\u000a with the initial design and culminating in the instructions for the machine that makes the part. When performed manually,\\u000a the procedure is very tedious, time consuming, and often, inconsistent. This paper presents an alternative method, called\\u000a the Automated Machining-Operations Process-Planning System (AMOPPS), to automatically

C.-H. Yeh; G. W. Fischer

1991-01-01

226

Benchmarking the effects of operating system interference on extreme-scale parallel machines  

Microsoft Academic Search

We investigate operating system noise, which we identify as one of the main reasons for a lack of synchronicity in parallel applications. Using a microbenchmark, we measure the noise on several contemporary platforms and find that, even with a general-purpose operating sys- tem, noise can be limited if certain precautions are taken. We then inject artificially generated noise into a

Peter H. Beckman; Kamil Iskra; Kazutomo Yoshii; Susan Coghlan; Aroon Nataraj

2008-01-01

227

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

228

The development of robot human-like behaviour for an efficient human- machine co-operation  

Microsoft Academic Search

Robotics can provide technological solutions for improving the quality of life of disabled o r elderly people. The main objective of this project is to give these people some independence. The use of a mobile base mounted arm allows for the restoration of some of the manipulatory functions lost by the person. Due to the cost of t he final

Y. Rybarczyk; S. Galerne; P. Hoppenot; E. Colle; D. Mestre

229

Performance evaluation of Automatic Extraction System. Volume IV. Recommended operating, maintenance, and training plans. Final technical report  

SciTech Connect

Since the AES is a different and more sochisticated machine, it became apparent during the in-mine trial that more than on-the-job training (OJT) is desirable for the operators. The AES is unique in that it should remain in the face for long periods rather than be moved often from the face to face. In addition, the operator should learn to trust the ACS in order to be more aware of the hazards in the face area. More training is one way to help increase operator and machine efficiency and safety consciousness. The lack of formal, organized, scheduled, non-productive-mode training of the AES operators appeared to affect the performance of the AES during mining, tramming, maneuvering, and bolting. Therefore, before the operator and bolters do their jobs and the mechanics maintain the AES on a regular basis in a production-mode, they should attend classes, including: (1) formal above ground classroom training, (2) non-productive-mode underground training, and (3) productive-mode OJT. The training department should have the authority and resources to train workers beforehand, and also whenever subsequent instruction is needed. This plan includes only those areas peculiar to the AES. It is assumed that mature, competent individuals (operators and bolters) have already been trained to use similar machines. If this is not the case, the training will require significantly more time.

Frantz, R.L.; King, R.H.; Bartsch, D.L.

1980-07-01

230

The Buttonhole Machine. Module 13.  

ERIC Educational Resources Information Center

This module on the bottonhole machine, one in a series dealing with industrial sewing machines, their attachments, and operation, covers two topics: performing special operations on the buttonhole machine (parts and purpose) and performing special operations on the buttonhole machine (gauged buttonholes). For each topic these components are

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

231

Benchmarking the effects of operating system interference on extreme-scale parallel machines.  

SciTech Connect

We investigate operating system noise, which we identify as one of the main reasons for a lack of synchronicity in parallel applications. Using a microbenchmark, we measure the noise on several contemporary platforms and find that, even with a general-purpose operating system, noise can be limited if certain precautions are taken. We then inject artificially generated noise into a massively parallel system and measure its influence on the performance of collective operations. Our experiments indicate that on extreme-scale platforms, the performance is correlated with the largest interruption to the application, even if the probability of such an interruption on a single process is extremely small. We demonstrate that synchronizing the noise can significantly reduce its negative influence.

Beckman, P.; Iskra, K.; Yoshii, K.; Coghlan, S.; Nataraj, A.; Mathematics and Computer Science; Univ. of Oregon

2008-03-01

232

Selection of cutting tools and conditions of machining operations using an expert system  

Microsoft Academic Search

This paper presents the development of a knowledge-based system for selection of cutting tools and conditions of turning operations. The system developed can be used to select the toolholder, insert and cutting conditions (feed, speed and depth of cut). It is able to analyse and optimise cutting tools and condition selection. In addition, the user or tool supplier is able

B. Arezoo; K. Ridgway; A. M. A. Al-Ahmari

2000-01-01

233

Engine Lathe Operator. Instructor's Guide. Part of Single-Tool Skills Program Series. Machine Industries Occupations.  

ERIC Educational Resources Information Center

Expected to help meet the need for trained operators in metalworking and suitable for use in the adult education programs of school districts, in manpower development and training programs, and in secondary schools, this guide consists of four sections: Introduction, General Job Content, Shop Projects, and Drawings for the Projects. General Job

New York State Education Dept., Albany. Bureau of Secondary Curriculum Development.

234

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

ERIC Educational Resources Information Center

This course, the second one to be published in what is expected to be a series of instructor's guides in the Single-Tool Skills Program, is expected to help meet the need for trained operators in metalworking and is designed for use in the adult education programs of school districts, in Manpower Development and Training Programs, and in secondary

New York State Education Dept., Albany. Bureau of Secondary Curriculum Development.

235

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

236

29 CFR 570.63 - Occupations involved in the operation of balers, compactors, and paper-products machines (Order 12).  

Code of Federal Regulations, 2013 CFR

...balers, compactors, and paper-products machines (Order 12). 570.63 Section 570...balers, compactors, and paper-products machines (Order 12). (a) Findings and declaration...following power-driven paper products machines: (i) Arm-type wire stitcher...

2013-07-01

237

29 CFR 570.63 - Occupations involved in the operation of balers, compactors, and paper-products machines (Order 12).  

Code of Federal Regulations, 2012 CFR

...balers, compactors, and paper-products machines (Order 12). 570.63 Section 570...balers, compactors, and paper-products machines (Order 12). (a) Findings and declaration...following power-driven paper products machines: (i) Arm-type wire stitcher...

2012-07-01

238

29 CFR 570.63 - Occupations involved in the operation of balers, compactors, and paper-products machines (Order 12).  

Code of Federal Regulations, 2014 CFR

...balers, compactors, and paper-products machines (Order 12). 570.63 Section 570...balers, compactors, and paper-products machines (Order 12). (a) Findings and declaration...following power-driven paper products machines: (i) Arm-type wire stitcher...

2014-07-01

239

Infinite Time Turing Machines  

Microsoft Academic Search

Infinite time Turing machines extend the operation of ordinary Turing machines into transfinite ordinal time. By doing so, they provide a natural model of infinitary computability, a theoretical setting for the analysis of the power and limitations of supertask algorithms.

Joel David Hamkins

2002-01-01

240

Evaluation of flyrock phenomenon due to blasting operation by support vector machine  

Microsoft Academic Search

Flyrock is an undesirable phenomenon in the blasting operation of open pit mines. Flyrock danger zone should be taken into\\u000a consideration because it is the major cause of considerable damage on the nearby structures. Even with the best care and competent\\u000a personnel, flyrock may not be totally avoided. There are several empirical methods for prediction of flyrock phenomenon. Low\\u000a performance

Hasel Amini; Raoof Gholami; Masoud Monjezi; Seyed Rahman Torabi; Jamal Zadhesh

241

Implementation and Evaluation of a Stator and Rotor Flux Linkage-Based Dead-Beat, Direct Torque Control of Induction Machines at the Operational Voltage Limits  

Microsoft Academic Search

Dead-beat, direct torque (and flux) control of an induction machine is experimentally achieved at a 10 kHz sampling frequency. The inverse solution utilized lends itself to a very insightful graphical representation. This allows for an objective experimental evaluation of voltage vector choices in the operational voltage limits. The parameter sensitivity of the control algorithm is also investigated.

N. T. West; R. D. Lorenz

2007-01-01

242

Validating cognitive support for operators of complex human-machine systems  

SciTech Connect

Modem nuclear power plants (NPPs) are complex systems whose performance is the result of an intricate interaction of human and system control. A complex system may be defined as one which supports a dynamic process involving a large number of elements that interact in many different ways. Safety is addressed through defense-in-depth design and preplanning; i.e., designers consider the types of failures that are most likely to occur and those of high consequence, and design their solutions in advance. However, complex interactions and their failure modes cannot always be anticipated by the designer and may be unfamiliar to plant personnel. These situations may pose cognitive demands on plant personnel, both individually and as a crew. Other factors may contribute to the cognitive challenges of NPP operation as well, including hierarchal processes, dynamic pace, system redundancy and reliability, and conflicting objectives. These factors are discussed in this paper.

O`Hara, J. [Brookhaven National Lab., Upton, NY (United States); Wachtel, J. [US Nuclear Regulatory Commission, Washington, DC (United States)

1995-10-01

243

The Knife Machine. Module 15.  

ERIC Educational Resources Information Center

This module on the knife machine, one in a series dealing with industrial sewing machines, their attachments, and operation, covers one topic: performing special operations on the knife machine (a single needle or multi-needle machine which sews and cuts at the same time). These components are provided: an introduction, directions, an objective,

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

244

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

245

78 FR 73206 - Logging Operations; Extension of the Office of Management and Budget's (OMB) Approval of the...  

Federal Register 2010, 2011, 2012, 2013, 2014

...information contained in the Logging Operations Standard are necessary...for each machine. Since the Logging Operations final rule has been in effect since 1995, OSHA assumes that...requirements contained in the Logging Operations Standard (29...

2013-12-05

246

Analysis of a display and control system man-machine interface concept. Volume 1: Final technical report  

NASA Technical Reports Server (NTRS)

An evaluation was made of the feasibility of utilizing a simplified man machine interface concept to manage and control a complex space system involving multiple redundant computers that control multiple redundant subsystems. The concept involves the use of a CRT for display and a simple keyboard for control, with a tree-type control logic for accessing and controlling mission, systems, and subsystem elements. The concept was evaluated in terms of the Phase B space shuttle orbiter, to utilize the wide scope of data management and subsystem control inherent in the central data management subsystem provided by the Phase B design philosophy. Results of these investigations are reported in four volumes.

Karl, D. R.

1972-01-01

247

New insulating materials and their use to achieve high operating stresses in electrostatic machines  

NASA Astrophysics Data System (ADS)

Compressed gas insulation has provided the main insulation for sustaining terminal voltages of electrostatic accelerators. Essentially coaxial geometry is used with mechanical support of the terminal achieved by long columns which also support the acceleration tubes. Because of the vacuum insulation in the acceleration tubes, the electric gradient along the columns is typically 10-20 kV/cm, whereas the radial gas gap can operate at stresses about ten times larger. Until now, the terminal support has always been located in the low stress axial direction along the column and not in the radial high stress region. This paper is concerned with support insulation to be used in the radial direction. Advantages of radial supports include: simpler, more compact column structures, higher total voltages, and support of discrete stress redistribution electrodes such as vivitron. Important factors to the design of radial support insulators include the insulation constraints imposed by the gas gap, mechanical contact to the solid insulator, and basic limits of gas-solid dielectric interfaces. The gas gap insulation strength is shown to be limited by surface microirregularities and this accounts for electrode area and pressure effects. Based on the gas gap requirements, a design strategy for the insulators is developed. Epoxy is employed as the dielectric to allow the use of cast-in metal inserts at the ends. The inserts provide mechanical contact, shielding of the triple junction, and redistribution of the interface electric stresses. By careful design, the electric stress on the interface is made lower than that in the plain coaxial electrode gap. Practical experience shows that voltage increases linearly with insulator length and that designs achieve more than 10 MV/m into the multimegavolt region.

Cooke, Chathan M.

1986-02-01

248

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

249

78 FR 24734 - Final Environmental Impact Statement for the Construction and Operation of an Infantry Platoon...  

Federal Register 2010, 2011, 2012, 2013, 2014

...collective (group) tactical movement techniques, and to detect, identify, engage, and defeat stationary and moving infantry and armor targets in a tactical array. Soldiers would engage targets with small arms, machine guns, and other weapon systems as...

2013-04-26

250

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

PubMed

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. PMID:1554612

Westgaard, R H; Jansen, T

1992-03-01

251

Cable-Twisting Machine  

NASA Technical Reports Server (NTRS)

New cable-twisting machine is smaller and faster than many production units. Is useful mainly in production of short-run special cables. Already-twisted cable can be fed along axis of machine. Faster operation than typical industrial cable-twisting machines possible by using smaller spools of wire.

Kurnett, S.

1982-01-01

252

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.

253

Evaluation of various slip estimation techniques for an induction machine operating under field-oriented control conditions  

Microsoft Academic Search

Six published methods of rotor slip estimation for sensorless speed control were evaluated using simulated data. Only two of these showed signs of being usable. Both are based on the steady-state machine model and produce a fair slip accuracy for a machine running under perfect field alignment conditions. It was not determined whether the other four techniques were unsuccessful because

Nicholas P. Rubin; Ronald G. Harley; Gregory Diana

1992-01-01

254

A NEW METHOD OF CURRENT-BASED CONDITION MONITORING IN INDUCTION MACHINES OPERATING UNDER ARBITRARY LOAD CONDITIONS  

Microsoft Academic Search

Fault conditions in induction machines such as eccentric air gaps and broken rotor bars result in harmonics in the stator current of the motor which can be used to monitor the health of the machine. However, variations in the load torque at multiples of rotational speed typically have the same effect on the motor current spectrum. When monitoring a single

RANDY R. SCHOEN; THOMAS G. HABETLER

1997-01-01

255

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

256

National Ignition Facility final optics assembly thermal effects of maintenance operations  

SciTech Connect

The National Ignition Facility (NIF), the world`s most powerful laser system, is being built at Lawrence Livermore National Laboratory (LLNL) to study inertial fusion and high-energy-density science. This billion-dollar facility consists of 192 beams focusing 1.8 MJ on a fusion target. The Final Optics Assembly (FOA), the last mechanical apparatus before the target chamber, converts the light from an incoming frequency of 1 {omega} to ia target-ready 3 {omega}, and focuses the laser beam. The performance of the frequency conversion crystals is very sensitive to temperature changes; crystal temperature must be maintained within a 0.1 C of a nominal temperature prior to a laser shot. Maximizing system availability requires minimizing thermal recovery times after thermal disturbances occurring in both normal and maintenance operations. To guide the design, it is important to have estimates of those recovery times. This report presents Computational Fluid Dynamics (CFD) design calculations to evaluate thermal effects of maintenance operations.

Parietti, L.; Martin, R.A.

1998-04-01

257

Machine learning-based receiver operating characteristic (ROC) curves for crisp and fuzzy classification of DNA microarrays in cancer research  

PubMed Central

Receiver operating characteristic (ROC) curves were generated to obtain classification area under the curve (AUC) as a function of feature standardization, fuzzification, and sample size from nine large sets of cancer-related DNA microarrays. Classifiers used included k nearest neighbor (kNN), nive Bayes classifier (NBC), linear discriminant analysis (LDA), quadratic discriminant analysis (QDA), learning vector quantization (LVQ1), logistic regression (LOG), polytomous logistic regression (PLOG), artificial neural networks (ANN), particle swarm optimization (PSO), constricted particle swarm optimization (CPSO), kernel regression (RBF), radial basis function networks (RBFN), gradient descent support vector machines (SVMGD), and least squares support vector machines (SVMLS). For each data set, AUC was determined for a number of combinations of sample size, total sum[?log(p)] of feature t-tests, with and without feature standardization and with (fuzzy) and without (crisp) fuzzification of features. Altogether, a total of 2,123,530 classification runs were made. At the greatest level of sample size, ANN resulted in a fitted AUC of 90%, while PSO resulted in the lowest fitted AUC of 72.1%. AUC values derived from 4NN were the most dependent on sample size, while PSO was the least. ANN depended the most on total statistical significance of features used based on sum[?log(p)], whereas PSO was the least dependent. Standardization of features increased AUC by 8.1% for PSO and -0.2% for QDA, while fuzzification increased AUC by 9.4% for PSO and reduced AUC by 3.8% for QDA. AUC determination in planned microarray experiments without standardization and fuzzification of features will benefit the most if CPSO is used for lower levels of feature significance (i.e., sum[?log(p)] ~ 50) and ANN is used for greater levels of significance (i.e., sum[?log(p)] ~ 500). When only standardization of features is performed, studies are likely to benefit most by using CPSO for low levels of feature statistical significance and LVQ1 for greater levels of significance. Studies involving only fuzzification of features should employ LVQ1 because of the substantial gain in AUC observed and low expense of LVQ1. Lastly, PSO resulted in significantly greater levels of AUC (89.5% average) when feature standardization and fuzzification were performed. In consideration of the data sets used and factors influencing AUC which were investigated, if low-expense computation is desired then LVQ1 is recommended. However, if computational expense is of less concern, then PSO or CPSO is recommended. PMID:19079753

Peterson, Leif E.; Coleman, Matthew A.

2008-01-01

258

Final  

E-print Network

OMB No. 0704-0188 The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to Department of Defense, Washington Headquarters Services, Directorate for information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway,

Poc Mr; Louis Kanaras

2004-01-01

259

Final Gleason Score Prediction Using Discriminant Analysis and Support Vector Machine Based on Preoperative Multiparametric MR Imaging of Prostate Cancer at 3T.  

PubMed

Objective. This study aimed at evaluating linear discriminant analysis (LDA) and support vector machine (SVM) classifiers for estimating final Gleason score preoperatively using multiparametric magnetic resonance imaging (mp-MRI) and clinical parameters. Materials and Methods. Thirty-three patients who underwent mp-MRI on a 3T clinical MR scanner and radical prostatectomy were enrolled in this study. The input features for classifiers were age, the presence of a palpable prostate abnormality, prostate specific antigen (PSA) level, index lesion size, and Likert scales of T2 weighted MRI (T2w-MRI), diffusion weighted MRI (DW-MRI), and dynamic contrast enhanced MRI (DCE-MRI) estimated by an experienced radiologist. SVM based recursive feature elimination (SVM-RFE) was used for eliminating features. Principal component analysis (PCA) was applied for data uncorrelation. Results. Using a standard PCA before final Gleason score classification resulted in mean sensitivities of 51.19% and 64.37% and mean specificities of 72.71% and 39.90% for LDA and SVM, respectively. Using a Gaussian kernel PCA resulted in mean sensitivities of 86.51% and 87.88% and mean specificities of 63.99% and 56.83% for LDA and SVM, respectively. Conclusion. SVM classifier resulted in a slightly higher sensitivity but a lower specificity than LDA method for final Gleason score prediction for prostate cancer for this limited patient population. PMID:25544944

Citak-Er, Fusun; Vural, Metin; Acar, Omer; Esen, Tarik; Onay, Aslihan; Ozturk-Isik, Esin

2014-01-01

260

Final Gleason Score Prediction Using Discriminant Analysis and Support Vector Machine Based on Preoperative Multiparametric MR Imaging of Prostate Cancer at 3T  

PubMed Central

Objective. This study aimed at evaluating linear discriminant analysis (LDA) and support vector machine (SVM) classifiers for estimating final Gleason score preoperatively using multiparametric magnetic resonance imaging (mp-MRI) and clinical parameters. Materials and Methods. Thirty-three patients who underwent mp-MRI on a 3T clinical MR scanner and radical prostatectomy were enrolled in this study. The input features for classifiers were age, the presence of a palpable prostate abnormality, prostate specific antigen (PSA) level, index lesion size, and Likert scales of T2 weighted MRI (T2w-MRI), diffusion weighted MRI (DW-MRI), and dynamic contrast enhanced MRI (DCE-MRI) estimated by an experienced radiologist. SVM based recursive feature elimination (SVM-RFE) was used for eliminating features. Principal component analysis (PCA) was applied for data uncorrelation. Results. Using a standard PCA before final Gleason score classification resulted in mean sensitivities of 51.19% and 64.37% and mean specificities of 72.71% and 39.90% for LDA and SVM, respectively. Using a Gaussian kernel PCA resulted in mean sensitivities of 86.51% and 87.88% and mean specificities of 63.99% and 56.83% for LDA and SVM, respectively. Conclusion. SVM classifier resulted in a slightly higher sensitivity but a lower specificity than LDA method for final Gleason score prediction for prostate cancer for this limited patient population. PMID:25544944

Citak-Er, Fusun; Vural, Metin; Acar, Omer; Esen, Tarik; Onay, Aslihan; Ozturk-Isik, Esin

2014-01-01

261

Agile Machining and Inspection Non-Nuclear Report (NNR) Project  

SciTech Connect

This report is a high level summary of the eight major projects funded by the Agile Machining and Inspection Non-Nuclear Readiness (NNR) project (FY06.0422.3.04.R1). The largest project of the group is the Rapid Response project in which the six major sub categories are summarized. This project focused on the operations of the machining departments that will comprise Special Applications Machining (SAM) in the Kansas City Responsive Infrastructure Manufacturing & Sourcing (KCRIMS) project. This project was aimed at upgrading older machine tools, developing new inspection tools, eliminating Classified Removable Electronic Media (CREM) in the handling of classified Numerical Control (NC) programs by installing the CRONOS network, and developing methods to automatically load Coordinated-Measuring Machine (CMM) inspection data into bomb books and product score cards. Finally, the project personnel leaned perations of some of the machine tool cells, and now have the model to continue this activity.

Lazarus, Lloyd

2009-02-19

262

3D simulation of tool machining  

Microsoft Academic Search

This paper describes a 3D tool machining simulation system. The initial tool and the grinding wheels are integrated with the machine tool. The application reads and interprets the CNC program code that controls the machine, it computes the positions and the motion of components and it translates the sequence of machining operations into Boolean operations. The machining is computed for

Anna Puig; Llu??s Perez-Vidal; Dani Tost

2003-01-01

263

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, Fentons 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

264

Impact of Winding Layer Number and Slot\\/Pole Combination on AC Armature Losses of Synchronous Surface PM Machines Designed for Wide Constant-Power Speed Range Operation  

Microsoft Academic Search

This paper examines the impact of the winding layer number (single- and double-layer), and magnet type (sintered and bonded), as well as slot\\/pole combinations on AC stator losses in surface permanent magnet (SPM) synchronous machines equipped with fractional-slot concentrated windings that are designed for wide speed ranges of constant-power operation. It is shown that the use of bonded magnets instead

Patel B. Reddy; T. M. Jahns; Ayman M. El-Refaie

2008-01-01

265

Environmental and Organizational Factors Associated with Elbow/Forearm and Hand/Wrist Disorder among Sewing Machine Operators of Garment Industry in Ethiopia  

PubMed Central

Occupational health problems related to upper limp musculoskeletal disorders were the major issue among sewing machine operators of garment industries in Ethiopia. The aim of this study was to assess the prevalence and associated risk factors of work related elbow and wrist musculoskeletal disorders among sewing machine operators of garment industries in Galan City, Oromia Regional State. A cross-sectional study was conducted from April 1 to 30, 2012. A total of 422 study subjects were included in this study. Standard Nordic Musculoskeletal Questionnaire was used to collect detailed information on musculoskeletal symptom, sociodemographic data, and factors associated with the problems through face to face interview. From a total of 422 sewing machine operators included in the study 370 (87.7%) were females and 306 (72.5%) were in the age group of <30 years. The prevalence of self-reported work related elbow and wrist musculoskeletal disorders was 40% and 37.7%, respectively. In multivariate analysis, those who had >16 years of service were about five times more likely to develop elbow and wrist musculoskeletal disorders than those who had short (15 years) year of services [AOR = 4.7, 95% CI: 1.5513.02], physical activities [AOR = 5.02, 95% CI: 1.5716.00], and methods of payment [AOR = 2.01, 95% CI: 1.233.28], factors significantly associated with this disorders. Work related elbow and wrist musculoskeletal disorders were high among sewing machine operators in selected garment industries. Moreover, personal and environmental factors were identified as the potential risk factors related to elbow and wrist musculoskeletal disorders among the study group. Therefore, government and the owner of the garment industries should give special attention to prevent and control the problems through proper occupational health and safety policy implementation in the country. PMID:25298780

Kebede Deyyas, Wakjira; Tafese, Ararso

2014-01-01

266

Environmental and organizational factors associated with elbow/forearm and hand/wrist disorder among sewing machine operators of garment industry in Ethiopia.  

PubMed

Occupational health problems related to upper limp musculoskeletal disorders were the major issue among sewing machine operators of garment industries in Ethiopia. The aim of this study was to assess the prevalence and associated risk factors of work related elbow and wrist musculoskeletal disorders among sewing machine operators of garment industries in Galan City, Oromia Regional State. A cross-sectional study was conducted from April 1 to 30, 2012. A total of 422 study subjects were included in this study. Standard Nordic Musculoskeletal Questionnaire was used to collect detailed information on musculoskeletal symptom, sociodemographic data, and factors associated with the problems through face to face interview. From a total of 422 sewing machine operators included in the study 370 (87.7%) were females and 306 (72.5%) were in the age group of <30 years. The prevalence of self-reported work related elbow and wrist musculoskeletal disorders was 40% and 37.7%, respectively. In multivariate analysis, those who had >16 years of service were about five times more likely to develop elbow and wrist musculoskeletal disorders than those who had short (1-5 years) year of services [AOR = 4.7, 95% CI: 1.55-13.02], physical activities [AOR = 5.02, 95% CI: 1.57-16.00], and methods of payment [AOR = 2.01, 95% CI: 1.23-3.28], factors significantly associated with this disorders. Work related elbow and wrist musculoskeletal disorders were high among sewing machine operators in selected garment industries. Moreover, personal and environmental factors were identified as the potential risk factors related to elbow and wrist musculoskeletal disorders among the study group. Therefore, government and the owner of the garment industries should give special attention to prevent and control the problems through proper occupational health and safety policy implementation in the country. PMID:25298780

Kebede Deyyas, Wakjira; Tafese, Ararso

2014-01-01

267

Analysis and design of a 100-kilowatt solar photovoltaic flat-panel power system for a machining and metalworking facility in Columbus, Ohio. Phase I. Photovoltaic flat panel application experiment. Final report, October 1, 1978February 28, 1979  

Microsoft Academic Search

A 100-kW-peak flat-panel photovoltaic power system to supply power to a machine-shop load in Columbus, Ohio has been designed and analyzed by a Battelle-led team. The system will provide three-phase, 240-volt ac power to a Machining and Metalworking Facility which has 100 pieces of machinery and employs 50 machinists and other craftsmen. The system will operate in parallel with the

G. T. Noel; G. Alexander; L. H. Stember; G. H. Stickford; J. H. Broehl; D. C. Carmichael

1979-01-01

268

A study of mechanization of the training of operators of complex semi-automatic machines as compared to existing methods of training  

E-print Network

eliminates the need for instructors and 1s faster than training with only an instruction sheet. INTRODUCTION AND REVIEl OF PRESENT TRAINING NACHINES Operators of semi-automatic machines or of operations which require manipulation of controls at a... STUDY The tz'aining mach1ne built for this study has two main components: The contzol board (F1guze 2, p. 11}, which teach- es the trainee the mach1ne cycle, and the remote control panel (Figuz'e 3, p. 12} on which the instructor sets up the varying...

Gerloff, Don Gerald

2012-06-07

269

Research at and Operation of the Materials Science Beamline (X-11) at the National Synchrotron Light Source. Final Report  

SciTech Connect

This is the final report for DOE DE-FG02-89ER45384. An overview of the operational history and status of beamline X-11A at the end of the contract period, and a brief review of the core science program at NCSU and the scientific results of X-11A since the last progress report is also presented.

Sayers, Dale E.

2003-10-15

270

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.

271

The Chainstitch Machine. Module 18.  

ERIC Educational Resources Information Center

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

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

272

An improved formula for lamination core loss calculations in machines operating with high frequency and high flux density excitation  

Microsoft Academic Search

For electrical machine designers, core loss data are usually provided in the form of tables or curves of total loss versus flux density or frequency. These can be used to extract the loss coefficients of the core loss formulas. In this paper, three currently available formulas are discussed and compared with the loss data supplied by lamination steel manufacturers. It

Yicheng Chen; Pragasen Pillay

2002-01-01

273

Simulation of induction machine operation using a step by step finite element method coupled with circuits and mechanical equations  

Microsoft Academic Search

The authors present the modeling of an induction machine using a nonlinear magnetodynamic complex method coupled with the circuit equations. The method is an extension to the harmonic solution of nonlinear magnetodynamic problems of the proposed classical finite element method. The coupling of the circuit equation completes the 2-D finite element method by making it possible to take into account

E. Vassent; G. Meunier; A. Foggia; G. Reyne

1991-01-01

274

Dictionary machine (for VLSI)  

SciTech Connect

The authors present the design of a dictionary machine that is suitable for VLSI implementation, and discusses how to realize this implementation efficiently. The machine supports the operations of search, insert, delete, and extractment on an arbitrary ordered set. Each of these operations takes time o(logn), where n is the number of entries present when the operation is performed. Moreover, arbitrary sequences of these instructions can be pipelined through the machine at a constant rate (i.e. independent of n and the capacity of the machine). The time o(logn) is an improvement over previous VLSI designs of dictionary machines which require time o(log n) per operation, where n is the maximum number of keys that can be stored. 10 references.

Ottmann, T.A.; Rosenberg, A.L.; Stockmeyer, L.J.

1982-09-01

275

Machine Learning  

NASA Astrophysics Data System (ADS)

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 as the scientific theories to be produced by machines are usually meant to be interpreted by humans. This chapter contains some of the most influential ideas and concepts in machine learning research to give the reader a basic insight into the field. After the introduction in Sect. 1, general ideas of how learning problems can be framed are given in Sect. 2. The section provides useful perspectives to better understand what learning algorithms actually do. Section 3 presents the Version space model which is an early learning algorithm as well as a conceptual framework, that provides important insight into the general mechanisms behind most learning algorithms. In section 4, a family of learning algorithms, the AQ family for learning classification rules is presented. The AQ family belongs to the early approaches in machine learning. The next, Sect. 5 presents the basic principles of decision tree learners. Decision tree learners belong to the most influential class of inductive learning algorithms today. Finally, a more recent group of learning systems are presented in Sect. 6, which learn relational concepts within the framework of logic programming. This is a particularly interesting group of learning systems since the framework allows also to incorporate background knowledge which may assist in generalisation. Section 7 discusses Association Rules - a technique that comes from the related field of Data mining. Section 8 presents the basic idea of the Naive Bayesian Classifier. While this is a very popular learning technique, the learning result is not well suited for human comprehension as it is essentially a large collection of probability values. In Sect. 9, we present a generic method for improving accuracy of a given learner by generatingmultiple classifiers using variations of the training data. While this works well in most cases, the resulting classifiers have significantly increased complexity and, hence, tend to destroy the human readability of the learning result that a single learner may produce. Section 10 contains a summary, mentions briefly other techniques not discussed in this chapter and presents outlook on the potential of machine learning in the future.

Hoffmann, Achim; Mahidadia, Ashesh

276

Machining of uranium and uranium alloys  

SciTech Connect

Uranium and uranium alloys can be readily machined by conventional methods in the standard machine shop when proper safety and operating techniques are used. Material properties that affect machining processes and recommended machining parameters are discussed. Safety procedures and precautions necessary in machining uranium and uranium alloys are also covered. 30 figures.

Morris, T.O.

1981-12-14

277

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

278

Infinite Time Turing Machines  

Microsoft Academic Search

We extend in a natural way the operation of Turing machines to infinite ordinal time, and investigate the resulting supertask theory of computability and decidability on the reals. Every ?11 set, for example, is decidable by such machines, and the semi-decidable sets form a portion of the ?12 sets. Our oracle concept leads to a notion of relative computability for

Joel David Hamkins; Andy Lewis

2000-01-01

279

Phase 3 of a Brushless Doubly-Fed Machine System Development Program : Final Technical Report for Period January 1, 1992-June 30, 1993.  

SciTech Connect

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 than in competing technologies. This provides for an advantage in initial as well as maintenance expenses over conventional drive system. Thus, the BDFM enables energy efficient, adjustable speed process control for applications where established drive technology has not been able to deliver satisfactory returns on investment. At the same time, the BDFM challenges conventional drive technologies in established markets by providing for improved performance at lower cost. BDFM converter rating is kept at a minimum, which significantly improves power quality at the utility interface over competing power conversion equipment. In summary, BDFM technology can be expected to provide significant benefits to utilities as well as their customers. This report discusses technical research and development activities related to Phase 3 of the Brushless Doubly-Fed Machine System Development Program, including work made possible by supplemental funds for laboratory improvement and prototype construction. Market research for the BDFM was provided by the College of Business at Oregon State University; market study results will be discussed in a separate report.

Alexander, Gerald C.; Spee, Rene; Wallace, Alan K.

1993-12-31

280

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

281

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

Microsoft Academic Search

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

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

1999-01-01

282

Interaction with Machine Improvisation  

NASA Astrophysics Data System (ADS)

We describe two multi-agent architectures for an improvisation oriented musician-machine interaction systems that learn in real time from human performers. The improvisation kernel is based on sequence modeling and statistical learning. We present two frameworks of interaction with this kernel. In the first, the stylistic interaction is guided by a human operator in front of an interactive computer environment. In the second framework, the stylistic interaction is delegated to machine intelligence and therefore, knowledge propagation and decision are taken care of by the computer alone. The first framework involves a hybrid architecture using two popular composition/performance environments, Max and OpenMusic, that are put to work and communicate together, each one handling the process at a different time/memory scale. The second framework shares the same representational schemes with the first but uses an Active Learning architecture based on collaborative, competitive and memory-based learning to handle stylistic interactions. Both systems are capable of processing real-time audio/video as well as MIDI. After discussing the general cognitive background of improvisation practices, the statistical modelling tools and the concurrent agent architecture are presented. Then, an Active Learning scheme is described and considered in terms of using different improvisation regimes for improvisation planning. Finally, we provide more details about the different system implementations and describe several performances with the system.

Assayag, Gerard; Bloch, George; Cont, Arshia; Dubnov, Shlomo

283

Site operator program final report for fiscal years 1992 through 1996  

SciTech Connect

The Site Operator Program was an electric vehicle testing and evaluation program sponsored by US Department of Energy and managed at the Idaho National Engineering and Environmental Laboratory. The Program`s goals included the field evaluation of electric vehicles in real-world applications and environments; the support of electric vehicle technology advancement; the development of infrastructure elements necessary to support significant electric vehicle use; and increasing the awareness and acceptance of electric vehicles. This report covers Program activities from 1992 to 1996. The Site Operator Program ended in September 1996, when it was superseded by the Field Operations Program. Electric vehicle testing included baseline performance testing, which was performed in conjunction with EV America. The baseline performance parameters included acceleration, braking, range, energy efficiency, and charging time. The Program collected fleet operations data on electric vehicles operated by the Program`s thirteen partners, comprising electric utilities, universities, and federal agencies. The Program`s partners had over 250 electric vehicles, from vehicle converters and original equipment manufacturers, in their operating fleets. Test results are available via the World Wide Web site at http://ev.inel.gov/sop.

Francfort, J.E. [Lockheed Martin Idaho Technologies Co., Idaho Falls, ID (United States). Idaho National Engineering and Environmental Lab.; Bassett, R.R. [Sandia National Labs., Albuquerque, NM (United States); Birasco, S. [Los Angeles Dept. of Water and Power, CA (United States)] [and others

1998-01-01

284

Tool allocation and machining conditions optimization for CNC machines  

Microsoft Academic Search

In the literature, there exist many variations of machining economics problem in terms of modelling approaches and solution methodologies. However most of the existing studies focus on the single machining operation which is seldom in practice. On the other hand, tool management approaches at the system level fail to relate the tooling issues to the machining conditions, and ignore the

M. Selim Akturk; Selcuk Avci

1996-01-01

285

Final Report: Operational Retrieval of Cloud Microphysical Properties Using Combined Measurements by Diverse Instruments  

SciTech Connect

The report on the final phase of the project describes improvements in the ice and liquid cloud retrieval algorithms due to the use of three-parameter particle size distributions in which all three parameters may vary with height, testing of the improved retrievals by comparisons of measured and calculated fluxes, and further improvement in liquid retrievals obtained by adding liquid water path information from the microwave radiometer to radar and visible optical depth information.

Richard T. Austin

2008-06-30

286

Shuttle Ground Operations Efficiencies/Technologies (SGOE/T) study. Volume 3: Final presentation material  

NASA Technical Reports Server (NTRS)

Charts used in the Final Phase 1 Oral Briefing at Kennedy Space Center on April 6, 1987, and to the Space Transportation Architecture Study (SPAS) Interim Program Review (IPS-5) held at MSFC on April 8, 1987, are contained. Topics discussed include: identification of existing or new technologies to reduce cost; management approaches; recommendations for research or development of specific technology for future use; and identification of new management techniques.

Scholz, A. L.; Hart, M. T.; Lowry, D. J.

1987-01-01

287

Turbine Reliability and Operability Optimization through the use of Direct Detection Lidar Final Technical Report  

SciTech Connect

The goal of this Department of Energy (DOE) project is to increase wind turbine efficiency and reliability with the use of a Light Detection and Ranging (LIDAR) system. The LIDAR provides wind speed and direction data that can be used to help mitigate the fatigue stress on the turbine blades and internal components caused by wind gusts, sub-optimal pointing and reactionary speed or RPM changes. This effort will have a significant impact on the operation and maintenance costs of turbines across the industry. During the course of the project, Michigan Aerospace Corporation (MAC) modified and tested a prototype direct detection wind LIDAR instrument; the resulting LIDAR design considered all aspects of wind turbine LIDAR operation from mounting, assembly, and environmental operating conditions to laser safety. Additionally, in co-operation with our partners, the National Renewable Energy Lab and the Colorado School of Mines, progress was made in LIDAR performance modeling as well as LIDAR feed forward control system modeling and simulation. The results of this investigation showed that using LIDAR measurements to change between baseline and extreme event controllers in a switching architecture can reduce damage equivalent loads on blades and tower, and produce higher mean power output due to fewer overspeed events. This DOE project has led to continued venture capital investment and engagement with leading turbine OEMs, wind farm developers, and wind farm owner/operators.

Johnson, David K; Lewis, Matthew J; Pavlich, Jane C; Wright, Alan D; Johnson, Kathryn E; Pace, Andrew M

2013-02-01

288

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

289

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

290

Tunneling machine  

SciTech Connect

A diametrically compact tunneling machine for boring tunnels is disclosed. The machine includes a tubular support frame having a hollow piston mounted therein which is movable from a retracted position in the support frame to an extended position. A drive shaft is rotatably mounted in the hollow piston and carries a cutter head at one end. The hollow piston is restrained against rotational movement relative to the support frame and the drive shaft is constrained against longitudinal movement relative to the hollow piston. A plurality of radially extendible feet project from the support frame to the tunnel wall to grip the tunnel wall during a tunneling operation wherein the hollow piston is driven forwardly so that the cutter head works on the tunnel face. When the hollow piston is fully extended, a plurality of extendible support feet, which are fixed to the rearward and forward ends of the hollow piston, are extended, the radially extendible feet are retracted and the support frame is shifted forwardly by the piston so that a further tunneling operation may be initiated.

Snyder, L.L.

1980-02-19

291

A Dictionary Machine (for VLSI)  

Microsoft Academic Search

The authors present the design of a dictionary machine that is suitable for VLSI implementation, and discusses how to realize this implementation efficiently. The machine supports the operations of search, insert, delete, and extractment on an arbitrary ordered set. Each of these operations takes time o(logn), where n is the number of entries present when the operation is performed. Moreover,

Thomas Ottmann; Arnold L. Rosenberg; Larry J. Stockmeyer

1982-01-01

292

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

293

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

294

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.

295

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.

296

Skills Conversion Project: Chapter 6, Forest Operations and Wood Products. Final Report.  

ERIC Educational Resources Information Center

A study of the forest operations and wood products industries was conducted in Atlanta and Seattle by the National Society of Professional Engineers. Included among these industries are tree development, crop and land management, logging, material handling transportation, cutting, peeling, assembly, pulp and paper, mobile homes, construction,

National Society of Professional Engineers, Washington, DC.

297

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.

298

Assessment of Educational Programs in State-Supported and State-Operated Schools. Final Report.  

ERIC Educational Resources Information Center

The document provides results of a study investigating implementation in 15 states of P.L. 89-313, an amendment to the Elementary and Secondary Education Act of 1965 which extends entitlement for Title I grant support to state agencies that operate or support schools serving handicapped children. Major areas of inquiry include a review of

Rehab Group, Inc., Arlington, VA.

299

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

300

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

301

Operation-Analysis in Application to a Learning Technology for Schools. Final Report.  

ERIC Educational Resources Information Center

The task of this program was very extensive and could not be completed in the time allotted. A major and effective start has been made in every category of effort, and the foundations for the complete framework of the methodology of operation analysis for summarizing, and recovery of experimental reports have been laid. These include the

Verplanck, William S.

302

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.

303

Strategic Defense System distributed operating system R D (research and development) review and recommendations. Final report  

SciTech Connect

The Strategic Defense System (SDS) imposes a set of requirements on distributed operating systems that is not met by state-of-the-art systems. In this paper, the key requirements are identified as being real-time support, reliability/fault tolerance, and security. The extent to which these requirements are being addressed by current distributed operating system research is discussed. The three distributed operating system projects that are currently receiving SDIO funds - Alpha, Cronus, and Mach - are reviewed. A fourth project, the V-distributed system project of Stanford University, is also highlighted, because of its unique potential for meeting certain SDS needs. Recommendations on the directions in which the SDIO should pursue each of these projects are made. The Office of Naval Research (ONR) Real-Time Computing Initiative, which is addressing some issues critical to the development of the SDS, is described. It is recommended that the SDIO seek to coordinate with the ONR in this effort. The appendix to this paper provides detailed descriptions of the Alpha, Cronus, Mach, and V-distributed operating system projects, as well as three other projects noted in the body of the paper: Amoeba, Clouds, and the Heterogeneous Computer Systems (HCS) Project.

Gordon, K.D.; Linn, C.J.

1989-04-01

304

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

305

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

306

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

307

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

308

Molten salt coal gasification process development unit. Phase 1. Volume 1. PDU operations. Final report  

SciTech Connect

This report summarizes the results of a test program conducted on the Molten Salt Coal Gasification Process, which included the design, construction, and operation of a Process Development Unit. In this process, coal is gasified by contacting it with air in a turbulent pool of molten sodium carbonate. Sulfur and ash are retained in the melt, and a small stream is continuously removed from the gasifier for regeneration of sodium carbonate, removal of sulfur, and disposal of the ash. The process can handle a wide variety of feed materials, including highly caking coals, and produces a gas relatively free from tars and other impurities. The gasification step is carried out at approximately 1800/sup 0/F. The PDU was designed to process 1 ton per hour of coal at pressures up to 20 atm. It is a completely integrated facility including systems for feeding solids to the gasifier, regenerating sodium carbonate for reuse, and removing sulfur and ash in forms suitable for disposal. Five extended test runs were made. The observed product gas composition was quite close to that predicted on the basis of earlier small-scale tests and thermodynamic considerations. All plant systems were operated in an integrated manner during one of the runs. The principal problem encountered during the five test runs was maintaining a continuous flow of melt from the gasifier to the quench tank. Test data and discussions regarding plant equipment and process performance are presented. The program also included a commercial plant study which showed the process to be attractive for use in a combined-cycle, electric power plant. The report is presented in two volumes, Volume 1, PDU Operations, and Volume 2, Commercial Plant Study.

Kohl, A.L.

1980-05-01

309

Locomotive data acquisition package phase II system development. Final report. Volume 2. LDR operations and maintenance  

SciTech Connect

An examination of the problems associated with railroad locomotive data acquisition is presented. The design of a minicomputer based locomotive data acquisition system is also presented. Special attention is placed on meeting the functional characteristics and environmental specifications required for the system. The system described consists of a magnetic tape digital data recorder, an ensemble of transducers, and analysis software. The system described is to be used as a research tool. This volume discusses the operation and maintenance of the Locomotive Data Recorder (LDR).

Abbott, R.K.; Kirsten, F.A.; Mullen, D.R.; Sidman, S.B.; Miller, J.G.; Ng, L.S.

1980-03-01

310

Operations, Maintenance, and Replacement 10-Year Plan 1990-1999 : Environmental Strategy. Final Report.  

SciTech Connect

In operating and maintaining its regional power transmission system, Bonneville Power Administration (BPA) must address environmental concerns. Pollution sources and pathways for pollution migration, including potential contamination from hazardous or toxic materials, are present. BPA must develop and follow precautionary measures, respond to emergencies, minimize wastes, redress past problems, alert and train employees to problems and safety needs, constantly evaluate this effort and update the program for improvements and changes in regulations and technology. Part of BPA's mission is to conduct its operation, maintenance, and replacement programs in an environmentally sound manner. BPA recognizes its responsibility to be good stewards of the environment. BPA will meet its environmental obligations as set forth in environmental laws and regulations. BPA intends to make consistent and measurable progress toward meeting these responsibilities. The target for the 10-Year Plan is to achieve environmental compliance and meet the following goals: (1) protect human health and the environment; (2) avoid or limit liability (3) set up an effective internal management structure to maintain compliance; and (4) achieve cost-effective compliance. 6 figs.

United States. Bonneville Power Administration.

1990-09-01

311

DNA-based machines.  

PubMed

The base sequence in nucleic acids encodes substantial structural and functional information into the biopolymer. This encoded information provides the basis for the tailoring and assembly of DNA machines. A DNA machine is defined as a molecular device that exhibits the following fundamental features. (1) It performs a fuel-driven mechanical process that mimics macroscopic machines. (2) The mechanical process requires an energy input, "fuel." (3) The mechanical operation is accompanied by an energy consumption process that leads to "waste products." (4) The cyclic operation of the DNA devices, involves the use of "fuel" and "anti-fuel" ingredients. A variety of DNA-based machines are described, including the construction of "tweezers," "walkers," "robots," "cranes," "transporters," "springs," "gears," and interlocked cyclic DNA structures acting as reconfigurable catenanes, rotaxanes, and rotors. Different "fuels", such as nucleic acid strands, pH (H?/OH?), metal ions, and light, are used to trigger the mechanical functions of the DNA devices. The operation of the devices in solution and on surfaces is described, and a variety of optical, electrical, and photoelectrochemical methods to follow the operations of the DNA machines are presented. We further address the possible applications of DNA machines and the future perspectives of molecular DNA devices. These include the application of DNA machines as functional structures for the construction of logic gates and computing, for the programmed organization of metallic nanoparticle structures and the control of plasmonic properties, and for controlling chemical transformations by DNA machines. We further discuss the future applications of DNA machines for intracellular sensing, controlling intracellular metabolic pathways, and the use of the functional nanostructures for drug delivery and medical applications. PMID:24647836

Wang, Fuan; Willner, Bilha; Willner, Itamar

2014-01-01

312

LDRD final report : a lightweight operating system for multi-core capability class supercomputers.  

SciTech Connect

The two primary objectives of this LDRD project were to create a lightweight kernel (LWK) operating system(OS) designed to take maximum advantage of multi-core processors, and to leverage the virtualization capabilities in modern multi-core processors to create a more flexible and adaptable LWK environment. The most significant technical accomplishments of this project were the development of the Kitten lightweight kernel, the co-development of the SMARTMAP intra-node memory mapping technique, and the development and demonstration of a scalable virtualization environment for HPC. Each of these topics is presented in this report by the inclusion of a published or submitted research paper. The results of this project are being leveraged by several ongoing and new research projects.

Kelly, Suzanne Marie; Hudson, Trammell B. (OS Research); Ferreira, Kurt Brian; Bridges, Patrick G. (University of New Mexico); Pedretti, Kevin Thomas Tauke; Levenhagen, Michael J.; Brightwell, Ronald Brian

2010-09-01

313

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

314

A Simple and Accurate Method to Calculate Transient EHL Film Thickness in Machine Components Undergoing Operation Cycles  

Microsoft Academic Search

This paper presents a new method to calculate EHL film thicknesses for contacts operating in transient conditions. The method approximates the EHL pressure distribution by its corresponding Hertz distribution. The transient Reynolds equation is simplified to a partial differential equation governing wave propagation of the film thickness from the inlet to the outlet of the Hertz contact region. The film

L. Chang

2000-01-01

315

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

SciTech Connect

This study attempts to identify and analyze the impacts of the System Operating Strategy (SOS) alternatives on cultural resources. The impacts include effects on Native American traditional cultural values, properties and practices. They also include effects on archeological or historic properties meeting the criteria of the National Register of Historic Places. In addition to responding to the requirements of the National Environmental Policy Act (NEPA), this analysis addresses the requirements of the National Historic Preservation Act (NHPA), the Archeological Resources Protection Act (ARPA), the Native American Graves Protection and Repatriation Act (NAGPRA), the Native American Religious Freedom Act (NARFA), and other relevant legislation. To meet their legally mandated cultural resources requirements, the SOR agencies will develop agreements and Implementation Plans with the appropriate State Historic Preservation Officers (SHPOs), Tribes, and the Advisory Council on Historic Preservation (ACHP) detailing the measures necessary to best manage the resource. The planning and implementation activities will be staged over a number of years in consultation with affected Tribes.

Columbia River System Operation Review (U.S.)

1995-11-01

316

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

317

Production prove-out of a process for remelting depleted-uranium machining chips by vacuum induction. Final report, October 1983-October 1984  

SciTech Connect

An MM and T program to pursue a production prove-out of recycling depleted uranium machining chips in an existing vacuum-induction remelting system was conducted. A viable method of processing DU chips and generating briquettes for remelting was developed. A pilot lot of 80 finished, machined M833 penetrators, fabricated under the guidelines of this program, is available for ballistic testing. Included in this report is a general analysis of facility requirements to implement chip recycling into the Aerojet production cycle.

Skillern, C.G.; Vogel, R.L.

1985-03-01

318

Automated solar module assembly line. Final report  

SciTech Connect

The solar module assembly machine which Kulicke and Soffa delivered under this contract is a cell tabbing and stringing machine, flexible in design, and capable of handling a variety of cells and assembling strings up to 4 feet long which then can be placed into a module array up to 2 feet by 4 feet in a series or parallel arrangement, and in a straight or interdigitated array format. The machine cycle is 5 seconds per solar cell. This machine is primarily adapted to 3 inch diameter round cells with two tabs between cells. Pulsed heat is used as the bond technique for solar cell interconnects. The solar module assembly machine unloads solar cells from a cassette, automatically orients them, applies flux and solders interconnect ribbons onto the cells. It then inverts the tabbed cells, connects them into cell strings, and delivers them into a module array format using a track mounted vacuum lance, from which they are taken to test and cleaning benches prior to final encapsulation into finished solar modules. Throughout the machine the solar cell is handled very carefully, and any contact with the collector side of the cell is avoided or minimized. A lamp simulator has been used to test bonded solar cells to determine if the bonding operation had any degrading effect on the cell. I-V profile curves taken of these sample cells, before and after the bonding operation indicate no apparent effect on the electrical characteristics of the solar cell by the bonding operation.

Bycer, M.

1980-08-01

319

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

320

Field-oriented asynchronous pulse-width modulation for high-performance AC machine drives operating at low switching frequency  

Microsoft Academic Search

A novel pulse-width modulation (PWM) technique is based on the prediction of the trajectory patterns that the stator current vector describes in a field-oriented coordinate system. The method of field-oriented PWM control minimizes the switching frequency at given torque ripple. The harmonics of the field producing current are left to develop freely, permitting operation at values of switching frequency that

Joachim Holtz; Eckhard Bube

1991-01-01

321

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

322

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.

2012-06-26

323

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

324

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

325

Simple Machines  

NSDL National Science Digital Library

This is a lesson about simple machines and how they relate to robots. Learners will gain an understanding of simple machines and how they may be used in our everyday lives. Students will also have an opportunity to design a Rube Goldberg Machine of their own. This is lesson 10 of 16 in the MarsBots learning module.

326

Multipurpose Prepregging Machine  

NASA Technical Reports Server (NTRS)

Machine designed and built for variety of uses involving coating or impregnating ("prepregging") fibers, tows, yarns, or webs or tapes made of such fibrous materials with thermoplastic or thermosetting resins. Prepreg materials produced used to make matrix/fiber composite materials. Comprises modules operated individually, sequentially, or simultaneously, depending on nature of specific prepreg material and prepregging technique used. Machine incorporates number of safety features.

Johnston, N. J.; Wilkinson, Steven; Marchello, J. M.; Dixon, D.

1995-01-01

327

Machine Instruction Count Program  

Microsoft Academic Search

The Machine Instruction Count Program (MIC Program) was originally developed in 1978 to produce 'operator' and 'operand' counts of object programs written for the AN\\/UYK-7 military computer. In 1981, its capability was expanded so that it could apply to the AN\\/UYS-1 (or Advanced Signal Processor) military computer. The former machine, made by UNIVAC, hosts the IBM-developed software for the sonar

John E. Gaffney Jr.

1982-01-01

328

A support vector machine-based state-of-health estimation method for lithium-ion batteries under electric vehicle operation  

NASA Astrophysics Data System (ADS)

Capacity and resistance are state-of-health (SOH) indicators that are essential to monitor during the application of batteries on board electric vehicles. For state-of-health determination in laboratory environment, standard battery performance tests are established and well-functioning. Since standard performance tests are not available on-board a vehicle, we are developing a method where those standard tests are applied virtually to a support vector machine-based battery model. This data-driven model is solely based on variables available during ordinary electric vehicle (EV) operation such as battery current, voltage and temperature. This article contributes with a thorough experimental validation of this method, as well as the introduction of new features - capacity estimation and temperature dependence. Typical EV battery usage data is generated and exposed to the suggested method in order to estimate capacity and resistance. These estimations are compared to direct measurements of the SOH indicators with standard tests. The obtained estimations of capacities and instantaneous resistances demonstrate good accuracy over a temperature and state-of-charge range typical for EV operating conditions and allow thus for online detection of battery degradation. The proposed method is also found to be suitable for on-board application in respect of processing power and memory restrictions.

Klass, Verena; Behm, Mrten; Lindbergh, Gran

2014-12-01

329

Evaluation of application for approval of alternative methodology for compliance with the NESHAP for shipbuilding and ship repair and recommended requirements for compliance (application submitted by Metro Machine Corporation, Norfolk, Virginia). Final report  

SciTech Connect

The US Environmental Protection Agency is providing background information that supports the use of Metro Machine Corporation`s (MMC) compliant all position enclosure (CAPE) plus air management system and regenerative thermal oxidizer (RTO) (CAPE + RTO System) as an alternative means of limiting the emissions of volatile organic hazardous air pollutants per volume of applied solids (nonvolatiles). This document also explains how the authors arrived at the operating, recordkeeping, and reporting conditions that MMC must meet for approval. The add-on control system they used consists of a pollution capture unit operation (CAPE) plus air management system and a destruction unit operation (RTO). When operated according to the specified procedures, it will control emissions to a level no greater than that from using coatings which comply with the limits in Table 2 of 40 CFR Part 63, Subpart II.

Serageldin, M.A.

1999-07-01

330

The Double-Needle Felling Machine. Module 17.  

ERIC Educational Resources Information Center

This module on the double-needle felling machine, one in a series dealing with industrial sewing machines, their attachments, and operation, covers two topics: performing special operations on the double-needle felling machine (straight seams) and performing special operations on the double-needle felling machine (curved flat-felled seams). For

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

331

Adult Competency Education Kit. Basic Skills in Speaking, Math, and Reading for Employment. Part K. ACE Competency Based Job Descriptions: #40--Salesperson, Automobile; #41--Salesperson, Men's Wear; #42--Waiter/Waitress; #45--Janitor; #46--Porter; #48--Pressing Machine Operator.  

ERIC Educational Resources Information Center

This eighth of fifteen sets of Adult Competency Education (ACE) Based Job Descriptions in the ACE kit contains job descriptions for Salesperson, Automotive; Salesperson, Men's Wear; Waiter/Waitress; Janitor; Porter; and Pressing Machine Operator. Each begins with a fact sheet that includes this information: occupational title, D.O.T. code, ACE

San Mateo County Office of Education, Redwood City, CA. Career Preparation Centers.

332

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.

333

The Button Sew Machine. Module 12.  

ERIC Educational Resources Information Center

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

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

334

The Bar Tack Machine. Module 16.  

ERIC Educational Resources Information Center

This module on the bar tack machine, one in a series dealing with industrial sewing machines, their attachments, and operation, covers one topic: performing special operations on the bar tack 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.

335

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

336

Recognition of machining features and feature topologies from NC programs  

Microsoft Academic Search

The machining feature is a high-level product geometric representation and macro description of the product geometry. It is vital to machining operation planning and integration of CAD and CAM systems. In the feature-based operation planning, given a feature, the operator needs its associated machining operation data. Since successful NC programs contain machining know-how of skilled workers associated with the machining

X. Yan; K. Yamazaki; J. Liu

2000-01-01

337

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

338

Cost effective machining and inspection of structural ceramic components for advanced high temperature application. Final CRADA report for CRADA number Y-1292-0151  

SciTech Connect

This Cooperative Research and Development Agreement (CRADA) was a mutual research and development (R and D) effort among the participants to investigate a range of advanced manufacturing technologies for two silicon nitride (Si{sub 3}N{sub 4}) ceramic materials. The general objective was to identify the most cost-effective part manufacturing processes for the ceramic materials of interest. The focus was determining the relationship between material removal rates, surface quality, and the structural characteristics of each ceramic resulting from three innovative processes. These innovated machining processes were studied using silicon nitride advanced materials. The particular (Si{sub 3}N{sub 4}) materials of interest were sintered GS-44 from the Norton Company, and reaction-bonded Ceraloy 147-3. The processes studied included the following activities: (1) direct laser machining; (2) rotary ultrasonic machining; and (3) diamond abrasive grinding, including both resinoid and vitreous-bonded grinding wheels. Both friable and non-friable diamond types were included within the abrasive grinding study. The task also conducted a comprehensive survey of European experience in use of ceramic materials, principally aluminum oxide. Originally, the effort of this task was to extend through a prototype manufacturing demonstration of selected engine components. During the execution of this program, however changes were made to the scope of the project, altering the goals. The Program goal became only the development of assessment of their impacts on product strength and surface condition.

Abbatiello, L.A. [Lockheed Martin Energy Systems, Inc., Oak Ridge, TN (United States); Haselkorn, M. [Caterpillar, Inc., Peoria, IL (United States)

1996-11-29

339

12 CFR 205.16 - Disclosures at automated teller machines.  

Code of Federal Regulations, 2012 CFR

... false Disclosures at automated teller machines. 205.16 Section 205.16 Banks and...205.16 Disclosures at automated teller machines. (a) Definition. Automated teller machine operator means any person that...

2012-01-01

340

12 CFR 1005.16 - Disclosures at automated teller machines.  

Code of Federal Regulations, 2014 CFR

... false Disclosures at automated teller machines. 1005.16 Section 1005.16 Banks...1005.16 Disclosures at automated teller machines. (a) Definition. Automated teller machine operator means any person that...

2014-01-01

341

12 CFR 1005.16 - Disclosures at automated teller machines.  

Code of Federal Regulations, 2012 CFR

... false Disclosures at automated teller machines. 1005.16 Section 1005.16 Banks...1005.16 Disclosures at automated teller machines. (a) Definition. Automated teller machine operator means any person that...

2012-01-01

342

12 CFR 205.16 - Disclosures at automated teller machines.  

Code of Federal Regulations, 2014 CFR

... false Disclosures at automated teller machines. 205.16 Section 205.16 Banks and...205.16 Disclosures at automated teller machines. (a) Definition. Automated teller machine operator means any person that...

2014-01-01

343

12 CFR 205.16 - Disclosures at automated teller machines.  

Code of Federal Regulations, 2010 CFR

... false Disclosures at automated teller machines. 205.16 Section 205.16 Banks and...205.16 Disclosures at automated teller machines. (a) Definition. Automated teller machine operator means any person that...

2010-01-01

344

12 CFR 1005.16 - Disclosures at automated teller machines.  

Code of Federal Regulations, 2013 CFR

... false Disclosures at automated teller machines. 1005.16 Section 1005.16 Banks...1005.16 Disclosures at automated teller machines. (a) Definition. Automated teller machine operator means any person that...

2013-01-01

345

12 CFR 205.16 - Disclosures at automated teller machines.  

Code of Federal Regulations, 2011 CFR

... false Disclosures at automated teller machines. 205.16 Section 205.16 Banks and...205.16 Disclosures at automated teller machines. (a) Definition. Automated teller machine operator means any person that...

2011-01-01

346

12 CFR 205.16 - Disclosures at automated teller machines.  

Code of Federal Regulations, 2013 CFR

... false Disclosures at automated teller machines. 205.16 Section 205.16 Banks and...205.16 Disclosures at automated teller machines. (a) Definition. Automated teller machine operator means any person that...

2013-01-01

347

49 CFR 236.772 - Machine, interlocking.  

Code of Federal Regulations, 2011 CFR

...Transportation 4 2011-10-01 2011-10-01 false Machine, interlocking. 236.772 Section 236.772 Transportation...SYSTEMS, DEVICES, AND APPLIANCES Definitions 236.772 Machine, interlocking. An assemblage of manually operated...

2011-10-01

348

49 CFR 236.771 - Machine, control.  

Code of Federal Regulations, 2011 CFR

...Transportation 4 2011-10-01 2011-10-01 false Machine, control. 236.771 Section 236.771 Transportation...SYSTEMS, DEVICES, AND APPLIANCES Definitions 236.771 Machine, control. An assemblage of manually operated devices...

2011-10-01

349

49 CFR 236.771 - Machine, control.  

Code of Federal Regulations, 2012 CFR

...Transportation 4 2012-10-01 2012-10-01 false Machine, control. 236.771 Section 236.771 Transportation...SYSTEMS, DEVICES, AND APPLIANCES Definitions 236.771 Machine, control. An assemblage of manually operated devices...

2012-10-01

350

49 CFR 236.771 - Machine, control.  

Code of Federal Regulations, 2010 CFR

...Transportation 4 2010-10-01 2010-10-01 false Machine, control. 236.771 Section 236.771 Transportation...SYSTEMS, DEVICES, AND APPLIANCES Definitions 236.771 Machine, control. An assemblage of manually operated devices...

2010-10-01

351

49 CFR 236.771 - Machine, control.  

Code of Federal Regulations, 2013 CFR

...Transportation 4 2013-10-01 2013-10-01 false Machine, control. 236.771 Section 236.771 Transportation...SYSTEMS, DEVICES, AND APPLIANCES Definitions 236.771 Machine, control. An assemblage of manually operated devices...

2013-10-01

352

49 CFR 236.772 - Machine, interlocking.  

Code of Federal Regulations, 2012 CFR

...Transportation 4 2012-10-01 2012-10-01 false Machine, interlocking. 236.772 Section 236.772 Transportation...SYSTEMS, DEVICES, AND APPLIANCES Definitions 236.772 Machine, interlocking. An assemblage of manually operated...

2012-10-01

353

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 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

354

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

355

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

356

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

357

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

358

: Helmholtz machine estimation .  

E-print Network

: Helmholtz machine density estimation . . : . . . (supervised learning) , (active learning) (query learning) [1, 3]. . (unsupervised learning), . , [5]. . Helmholtz machine , . Helmholtz machine : Helmholtz machine [2] . Helmholtz machine (generative network) (recognition network) . , , . Helmholtz machine (self

359

Kicking Machine  

NSDL National Science Digital Library

In this design challenge activity, learners build a machine that kicks a Ping-Pong ball into a cup lying on its side 12 inches away. Learners use a pendulum, a rubber band, or a combination of the two to do this and test the accuracy of their machines by shooting a Ping-Pong ball into a cup. Educators can use this activity to demonstrate simple machines and kinetic/potential energy. This activity can be followed up with "Extreme Kicking Machine" which adds an even greater challenge into the mix.

2012-08-20

360

Machine Learning for Robots: A Comparison of Different Paradigms  

E-print Network

Machine Learning for Robots: A Comparison of Different Paradigms Sridhar Mahadevan Department as a special case of the general problem of machine learning. Machine learning is a subfield of artificial painstakingly programming the robot to operate the machine. Machine learning research has studied many different

Mahadevan, Sridhar

361

Machine Learning for Robots: A Comparison of Di erent Paradigms  

E-print Network

Machine Learning for Robots: A Comparison of Di erent Paradigms Sridhar Mahadevan Department of the general problem of machine learning. Machine learning is a sub eld of arti cial intelligence (AI), whose programming the robot to operate the machine. Machine learning research has studied many di erent types

Duckett, Tom

362

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

363

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,

364

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

365

Ultrasonic Detection of Anomalous Machining Damage  

NASA Astrophysics Data System (ADS)

During manufacture, rotating jet-engine components are shaped into their final configurations by machining operations which may include turning, drilling and broaching. Anomalous machining conditions, such as a loss of lubricant or a damaged cutting tool, can result in an altered near-surface microstructure, shortening the useful life of the component. In this paper we report on preliminary attempts to detect anomalous machining damage using ultrasonic surface acoustic waves (SAWs). Two pulse/echo immersion setups are considered: normal-incidence acoustic microscopy (Method 1); and oblique-incidence SAW backscatter (Method 2). Each method is applied to pairs of Ti 6-4 turned coupons, one manufactured using accepted best practices; and one purposely damaged using abusive machining conditions. Representative results are presented for each method. Method 1 is very sensitive to changes in surface topology; thus near-surface damage that is accompanied by surface topology changes can be readily detected. For detecting microstructural damage in the absence of topology changes, Method 2 is preferable. In Method 2 the transducer tilt angle is found which results in the maximum backscattered SAW "noise." This angle is dependent on the effective surface wave speed, which in turn is influenced by the near-surface microstructure. For a set twenty Ti 6-4 turned coupons, Method 2 was generally able to distinguish damaged from undamaged surfaces.

Margetan, F. J.; Enyart, Darrel; Thompson, R. B.

2009-03-01

366

Final report study of alternatives for future operations of the naval petroleum and oil shale reserves NPR-2, California  

SciTech Connect

The US Department of Energy (DOE) has asked Gustavson Associates, Inc. to serve as an Independent Petroleum Consultant under contract DE-AC01-96FE64202. This authorizes a study and recommendations regarding future development of Naval Petroleum Reserve No. 2 (NPR-2) in Kern County, California. The report that follows is the Phase II Final Report for that study. Additional details are provided in the Addendum (the Phase I Property Description and Fact Finding Report). The key property elements that positively affect the estimated value of NPR-2 include the following: royalty income from producing oil and gas leases, rental income from non-producing oil and gas leases, income from grazing or leasing of grazing rights, potential income from oil and gas leasing on exploratory (or nonprospective) acreage, potential value of trading surface real estate as ranch land for sheep grazing (10,044 acres), and town lots for residential or commercial development (16.7 acres). Key elements that negatively impact the estimated value include: environmental assessment costs, operating budgets, and lease sale expenses.

NONE

1996-12-01

367

Residential and commercial space heating and cooling with possible greenhouse operation; Baca Grande development, San Luis Valley, Colorado. Final report  

SciTech Connect

A feasibility study was performed to evaluate the potential of multipurpose applications of moderate-temperature geothermal waters in the vicinity of the Baca Grande community development in the San Luis Valley, Colorado. The project resource assessment, based on a thorough review of existing data, indicates that a substantial resource likely exists in the Baca Grande region capable of supporting residential and light industrial activity. Engineering designs were developed for geothermal district heating systems for space heating and domestic hot water heating for residences, including a mobile home park, an existing motel, a greenhouse complex, and other small commercial uses such as aquaculture. In addition, a thorough institutional analysis of the study area was performed to highlight factors which might pose barriers to the ultimate commercial development of the resource. Finally, an environmental evaluation of the possible impacts of the proposed action was also performed. The feasibility evaluation indicates the economics of the residential areas are dependent on the continued rate of housing construction. If essentially complete development could occur over a 30-year period, the economics are favorable as compared to existing alternatives. For the commercial area, the economics are good as compared to existing conventional energy sources. This is especially true as related to proposed greenhouse operations. The institutional and environmental analyses indicates that no significant barriers to development are apparent.

Goering, S.W.; Garing, K.L.; Coury, G.E.; Fritzler, E.A.

1980-05-01

368

Simple Machines  

NSDL National Science Digital Library

Through a five-lesson series with five activities, students are introduced to six simple machinesinclined plane, wedge, screw, lever, pulley, wheel-and-axleas well as compound machines, which are combinations of two or more simple machines. Once students understand about work (work = force x distance), they become familiar with the machines' mechanical advantages, and see how they make work easier. Through an introduction to compound machines, students begin to think critically about machine inventions and their pervasive roles in our lives. After learning about Rube Goldberg contraptionsabsurd inventions that complete simple tasks in complicated waysthey evaluate the importance and usefulness of the many machines around them. Through the hands-on activities, students draw designs for contraptions that could move a circus elephant into a rail car, create a construction site ramp design by measuring different inclined planes and calculating the ideal vs. actual mechanical advantage of each, compare the theoretical and actual mechanical advantages of different pulley systems conceived to save a whale, build and test grape catapults made with popsicle sticks and rubber bands, and follow the steps of the engineering design process to design and build Rube Goldberg machines.

Integrated Teaching and Learning Program,

369

Electric machine  

SciTech Connect

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

370

Simple Machines  

NSDL National Science Digital Library

How do you get a glove and a ball up to your tree house? One answer is to use a pulley. A pulley is a simple machine. In this original KET interactive, children learn about the basic workings of three simple machines.

2010-11-03

371

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

372

Simple Machines  

NSDL National Science Digital Library

In this physical science mini-unit designed for grade 8 students, six groups of students each specialize in one of the six simple machines. As outlined here, the unit covers three to four class periods and deals with forces and motion, work and machines, and mechanical advantage. The teacher introduces students to these topics using the included PowerPoint presentation. Student groups do library or Internet research on their particular simple machine and then experiment with it in class. In culminating oral presentations, each group explains the function(s) of their machine, its mechanical advantage, and some of its everyday uses. The unit plan contains a worksheet for each simple machine group, a notes sheet, teacher pointers, and an assessment rubric.

Spaulding, Anna

2004-01-01

373

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.

374

An Integrated Process Planning System for Machining and Inspection  

E-print Network

, and measurement operation information. A mechanism to link tolerance requirements and machining feature-between machining operations. Measurement of each critical tolerance is also planned by the developed system proper adjustments to the immediate subsequent machining operation(s). A software prototype was developed

Boyer, Edmond

375

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

376

ELECTROCHEMICAL MACHINING OF CARBIDES AND BORIDES  

E-print Network

machining gap is not a parameter controlled during the operation,operation is always 10,000), consequently the pressure drop through the machiningmachining gap decreases with the current density and by extrapolation reaches a zero value, where ECM operation

Dissaux, Bernard Antoine

2011-01-01

377

Machine coolant recycling system  

SciTech Connect

Machining processes at the 272W Site Fabrication Services (SFS) produce a waste stream consisting of dirty machine coolant. During use the coolant becomes contaminated with metal chips from milling, and oil, dirt and solvents from the machining process. The mixture is designated as a Washington State dangerous waste with WP02 (persistence), D007 (chromium) and D008 (lead) waste codes. This process results in the generation of 13.5 m{sup 3} of hazardous waste per year with an annual cost for coolant replacement, waste management and waste disposal of approximately $137,000. To identify alternatives to this situation, ICF Kaiser Hanford Company (ICF KH) North Environmental Services conducted a pollution prevention opportunity assessment (P20A) on the machining processes. A coolant recycler and sump sucker unit were selected as the most cost-effective waste reduction options. In December 1994, ICF KH received return on investment (ROI) funding from the U.S. Department of Energy Richland Operations Office (DOE-RL) to implement this option. The coolant recycling and the sump sucker units were purchased and installed in July 1995 at a total cost of $61,000. The sump sucker removes the dirty coolant from the fabrication machinery and filters it to remove shavings and sludge. The filtered coolant then is transferred to the coolant recycling system for further processing. The coolant recycling system reconditions the filtered coolant for use in the machining equipment, and mixes the concentrated coolant to the correct concentration. As a result of implementing this option, the annual generation of waste coolant was reduced by 12 m{sup 3}. The annual cost savings exceed $119,000 with an ROI of 186%. Additional benefits include reduced coolant usage; improved tool life, wheel life, finish, size control, corrosion protection, and operator working conditions; increase machine {open_quotes}up-time{close_quotes}; and reduced machine tool maintenance.

Grabner, T.A. [ICF Kaiser Hanford Company, Richland, WA (United States)

1996-12-31

378

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. Its 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

379

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.

380

Machine safety: proper safeguarding techniques.  

PubMed

1. OSHA mandates certain safeguarding of machinery to prevent accidents and protect machine operators. OSHA specifies moving parts that must be guarded and sets criteria for the guards. 2. A 1989 OSHA standard for lockout/tagout requires locking the energy source during maintenance, periodically inspecting for power transmission, and training maintenance workers. 3. In an amputation emergency, first aid for cardiopulmonary resuscitation, shock, and bleeding are the first considerations. The amputated part should be wrapped in moist gauze, placed in a sealed plastic bag, and placed in a container of 50% water and 50% ice for transport. 4. The role of the occupational health nurse in machine safety is to conduct worksite analyses to identify proper safeguarding and to communicate deficiencies to appropriate personnel; to train workers in safe work practices and observe compliance in the use of machine guards; to provide care to workers injured by machines; and to reinforce safe work practices among machine operators. PMID:1388370

Martin, K J

1992-06-01

381

15 CFR 5.5 - Vending machines.  

Code of Federal Regulations, 2014 CFR

...2014-01-01 2014-01-01 false Vending machines. 5.5 Section 5.5 Commerce and...OPERATION OF VENDING STANDS 5.5 Vending machines. (a) The income from any vending machines which are located within reasonable...

2014-01-01

382

15 CFR 5.5 - Vending machines.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 2011-01-01 false Vending machines. 5.5 Section 5.5 Commerce and...OPERATION OF VENDING STANDS 5.5 Vending machines. (a) The income from any vending machines which are located within reasonable...

2011-01-01

383

Virtual Machine Monitors 36.1 Introduction  

E-print Network

36 Virtual Machine Monitors 36.1 Introduction Years ago, IBM sold mainframes to large organizations, and a problem arose: what if the organization wanted to run different operating systems on the machine? (some yet another level of indirection in the form of a virtual machine monitor, or VMM or just monitor

Sheridan, Jennifer

384

15 CFR 5.5 - Vending machines.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Vending machines. 5.5 Section 5.5 Commerce and...OPERATION OF VENDING STANDS 5.5 Vending machines. (a) The income from any vending machines which are located within reasonable...

2013-01-01

385

15 CFR 5.5 - Vending machines.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Vending machines. 5.5 Section 5.5 Commerce and...OPERATION OF VENDING STANDS 5.5 Vending machines. (a) The income from any vending machines which are located within reasonable...

2010-01-01

386

15 CFR 5.5 - Vending machines.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 2012-01-01 false Vending machines. 5.5 Section 5.5 Commerce and...OPERATION OF VENDING STANDS 5.5 Vending machines. (a) The income from any vending machines which are located within reasonable...

2012-01-01

387

???????????????????????????????????????????? Design and Development of Shrimp Straightening Machine  

Microsoft Academic Search

A semi automatic shrimp straightening machine controlled by a programmable logic controller (PLC) was designed and developed. The machine consisted of three main parts, a shrimp conveyor, a shrimp pressing straightening part and the controller. The machine had three operation steps. In the first step, a pneumatic cylinder retreated at the stroke of 5 cm to move the conveyor with

Prakarn Paemunkong

388

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

389

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

390

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.

391

Developing new multipurpose machine tools for the manufacture of complex parts  

Microsoft Academic Search

OAO Sterlitamakskii stankostroitelnyi zavod (the Sterlitamak plant) is Russian leading machine-tool manufacturer. The plant has considerable experience in creating metalworking machine tools. Machine tools produced by the plant perform various procedures: from simple and familiar machining operations to complex combinations of methods. The manufacturing industry today demands more efficient machining of machine parts, taking account of quality, productivity, and cost.

V. N. Zharinov; V. L. Zinov; R. G. Kudoyarov; E. M. Durko

2008-01-01

392

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

393

Drum cutter mining machine  

Microsoft Academic Search

A drum cutter mining machine includes a machine frame with a winch having a drive wheel to engage a rack or chain which extends along the path of travel by the mining machine to propel the machine along a mine face. The mining machine is made up of discrete units which include a machine body and machine housings joined to

K. Oberste-beulmann; H. Schupphaus

1980-01-01

394

IDMME 2006 Grenoble, France, May 17-19, 2006 EVALUATION OF MACHINING DISPERSIONS FOR TURNING  

E-print Network

of machining aims to simulate the operations of machining by taking into account the dispersions of machining of simulation of machining allows to simulate the behaviour of the operations of the process plan consideringIDMME 2006 Grenoble, France, May 17-19, 2006 1 EVALUATION OF MACHINING DISPERSIONS FOR TURNING

Paris-Sud XI, Université de

395

Different Virtual Stator Winding Configurations of Open-End Winding Five-Phase PM Machines for Wide Speed Range without Flux Weakening Operation  

E-print Network

. Besides, in order to insure electrical security and to reduce constraints on the Battery Management constant power speed range for a family-car is from 30-40km/h up to 120-150km/h. Electrical machines whose Because of large impact of road transportation on carbon emission, researches on Hybrid Electric Vehicles

Paris-Sud XI, Université de

396

Simulating Turing Machines on Maurer Machines  

E-print Network

Simulating Turing Machines on Maurer Machines J.A. Bergstra1,2 and C.A. Middelburg3 1 Programming MB Eindhoven, the Netherlands keesm@win.tue.nl Abstract. Maurer machines are much closer to real computers than Turing machines. Computer instructions play a prominent part in Mau- rer machines. We show

van der Zwaag, Mark

397

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.

398

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

399

Emulation tool for simulating matrix operations on an SIMD (Single Instruction Stream Multiple Data Stream) multiprocessor. Final report, 15 August 1984-14 August 1987  

SciTech Connect

The MJH1 is a very good software tool to use in the analysis of the correctness of various partitioning algorithms. It has the potential to be a forerunner in the discipline of Computer Engineering at North Carolina A and T State University. This is possible because the emulator is easily adaptable to fit system architectures other than SIMD. Through simulation, different architectures can be implemented, as well as various algorithms for exclusive partitioning of matrices to perform simple matrix operations in a parallel or multiprocessor environment. The MJH1 Emulator has the potential to be expanded tremendously. The instruction set could grow immensely. Also, the emulator could be made into a smarter, more-intelligent machine by combining some existing commands and making its language of a higher level.

Martin, H.L.

1987-10-01

400

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

401

How to Operate an Energy Advisory Service, Volume III: New York Tech Energy Hot Line Resource Material. Final Report.  

ERIC Educational Resources Information Center

This publication is the third of a three volume set summarizing the Energy Advisory Service operated by the New York Institute of Technology. The contents of this volume relate to the energy hot line operation part of this project. Contents include: (1) Hot Line Questions and Answer File; (2) Hot Line Pamphlet Collection; and (3) Key to Hot Line

Spak, Gale Tenen; Shelley, Edwin F.

402

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

403

A synchronous\\/permanent magnet hybrid AC machine  

Microsoft Academic Search

In this paper, a synchronous\\/permanent magnet hybrid (SynPM) machine is presented. It is shown that the machine has good power density and efficiency, and that the machine has true field regulation capability. The principle of operation, finite element analysis and simulation of this new machine are investigated in the paper

Xiaogang Luo; Thomas A. Lipo

2000-01-01

404

Virtual machine time travel using continuous data protection and checkpointing  

Microsoft Academic Search

Virtual machine (VM) time travel enables reverting a vir- tual machine's state, both transient and persistent, to past points in time. This capability can be used to improve vir- tual machine availability, to enable forensics on past VM states, and to recover from operator errors. We present an approach to virtual machine time travel which combines Continuous Data Protection (CDP)

Paula Ta-shma; Guy Laden; Muli Ben-yehuda; Michael Factor

2008-01-01

405

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

406

Decoding Machine  

NSDL National Science Digital Library

In this math lesson, learners explore variables and their uses. Learners pretend to be FBI agents and make a TOP SECRET tool that enables them to decode and find the values of hidden messages and words. Learners make their simple "decoding machines" out of paper and tape.

Lessonplans, Utah

2012-10-22

407

Leonardo's Machines  

NSDL National Science Digital Library

This Science NetLinks lesson will highlight some of Leonardo da Vinci's futuristic inventions, introducing the elements of machines. Through the use of student interactives, this lesson provides an interesting context in which students can begin to develop their ideas about the uniqueness of humans in the natural world.

Science Netlinks;

2003-03-05

408

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.

409

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

410

The Current Operation of the Chapter 1 Program. Final Report from the National Assessment of Chapter 1.  

ERIC Educational Resources Information Center

This final report is part of a national assessment on the Chapter 1 Compensatory education program. The assessment, which began in 1984, includes national data through 1987. The topics covered in the report are the following: (1) program framework; (2) findings and implications of the national assessment; (3) distribution, character, and selection

Birman, Beatrice F.; And Others

411

One-class support vector machinesan application in machine fault detection and classification  

Microsoft Academic Search

Fast incipient machine fault diagnosis is becoming one of the key requirements for economical and optimal process operation management. Artificial neural networks have been used to detect machine faults for a number of years and shown to be highly successful in this application area. This paper presents a novel test technique for machine fault detection and classification in electro-mechanical machinery

Hyun Joon Shin; Dong-Hwan Eom; Sung-Shick Kim

2005-01-01

412

Installation and evaluation of a nuclear power plant Operator Advisor based on artificial intelligence technology. Final report  

SciTech Connect

The Artificial Intelligence Group in the Nuclear Engineering Program has designed and built an Operator Advisor (OA), an AI system to monitor nuclear power plant parameters, detect component and system malfunctions, dispose their causes, and provide the plant operators with the correct procedures for mitigating the consequences of the malfunctions. It then monitors performance of the procedures, and provides backup steps when specific operator actions fail. The OA has been implemented on Sun 4 workstations in Common Lisp, and has been interfaced to run in real time on the Perry Nuclear Power Plant full-function simulator in the plant training department. The eventual goal for a fully functioning Operator Advisor would be to have reactor operators receive direction for all plant operations. Such a goal requires considerable testing of the system within limited malfunction boundaries, an extensive Verification & Validation (V&V) effort, a large knowledge base development effort, and development of tools as part of the system to automate its maintenance. Clearly, these efforts are beyond the scope of the feasibility effort expended during this project period. However, as a result of this project, we have an AI based platform upon which a complete system can be built.

Hajek, B.K.; Miller, D.W.

1993-02-01

413

Free-leg Hexapod: A novel approach of using parallel kinematic platforms for developing miniature machine tools for special purpose operations  

Microsoft Academic Search

The paper reports on the development, calibration and exploitation of a novel configuration of parallel kinematic platform, Free-leg Hexapod (FreeHex), on which the base (fixed) platform has been removed; thus, each leg can be individually positioned on workpiece surfaces of non-flat geometries. To enable the utilisation of FreeHex as a miniature machine tool, calibration methods (to reference the platform against

D. A. Axinte; J. M. Allen; R. Anderson; I. Dane; L. Uriarte; A. Olara

2011-01-01

414

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

415

''Diagonalization'' of a compound Atwood machine  

SciTech Connect

We consider a simple Atwood machine consisting of a massless frictionless pulley no. 0 supporting two masses m/sub 1/ and m/sub 2/ connected by a massless flexible string. We show that the string that supports massless pulley no. 0 ''thinks'' it is simply supporting a mass m/sub 0/, with m/sub 0/ = 4m/sub 1/m/sub 2//(m/sub 1/+m/sub 2/). This result, together with Einstein's equivalence principle, allows us to solve easily those compound Atwood machines created by replacing one or both of m/sub 1/ and m/sub 2/ in machine no. 0 by an Atwood machine. We may then replacing the masses in these new machines by machines, etc. The complete solution can be written down immediately, without solving simultaneous equations. Finally we give the effective mass of an Atwood machine whose pulley has nonzero mass and moment of inertia.

Crawford, F.S.

1987-06-01

416

High temperature process steam application at the Southern Union Refining Company, Hobbs, New Mexico. Solar energy in the oil patch. Final report, Phase III: operation, maintenance, and performance  

SciTech Connect

This final report summarizes the technical reports for Phase III of this project. The third phase included the operation, maintenance, upgrade and performance reporting of a 10,080 square foot Solar Industrial Process Heat System installed at the Famariss Energy Refinery of Southern Union Refining Company near Hobbs, New Mexico. This report contains a description of the upgraded system, and a summary of the overall operation, maintenance and performance of the installed system. The results of the upgrade activities can be seen in the last two months of operational data. Steam production was significantly greater in peak flow and monthly total than at any previous time. Also monthly total cost savings was greatly improved even though natural gas costs remain much lower than originally anticipated.

Wilson, L.E.; McGuire, D.R.

1984-05-01

417

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

418

Columbia River System Operation Review : Final Environmental Impact Statement, Appendix C: Anadromous Fish and Juvenile Fish Transportation.  

SciTech Connect

This Appendix C of the Final Environmental Impact Statement for the Columbia River System discusses impacts on andromous fish and juvenile fish transportation. The principal andromous fish in the Columbia basin include salmonid species (Chinook, coho, and sockeye salmon, and steelhead) and nonsalmoinid andromous species (sturgeon, lamprey, and shad). Major sections in this document include the following: background, scope and process; affected environment for salmon and steelhead, shaded, lamprey, sturgeon; study methods; description of alternatives: qualitative and quantitative findings.

Columbia River System Operation Review (U.S.)

1995-11-01

419

Electrical machine having controlled characteristics and its application to a wind-driven machine  

SciTech Connect

The invention provides an electrical machine having an inductor and an armature, one of which has at least two independent winding assemblies. The switching into and out of circuit of each winding assembly is controlled by a processor which receives monitoring parameters of the machine and desired value parameters, thereby controlling in real time the operating characteristics of the machine. The machine may be a winddriven generator.

Berna, M.; Kant, M.; Seger, R.; Vilain, J.P.

1983-07-26

420

State-Machine Replication  

E-print Network

State-Machine Replication #12;The Problem Clients Server #12;The Problem Clients Server #12;The (state machine) #12;The Solution 1. Make server deterministic (state machine) State machine #12;The Solution 1. Make server deterministic (state machine) 2. Replicate server State machines #12;The Solution 1

Venkataramani, Arun

421

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. An overview of a flight control team s makeup and responsibilities during a flight, and details on how those teams are trained and certified, reveals that while the training methodology for developing flight controllers has evolved significantly over the last thirty years the core goals and competencies have remained the same. In addition, the facilities and tools used in the control center have evolved. Changes in methodology and tools have been driven by many factors, including lessons learned, technology, shuttle accidents, shifts in risk posture, and generational differences. Flight controllers share their experiences in training and operating the space shuttle. The primary training method throughout the program has been mission simulations of the orbit, ascent, and entry phases, to truly train like you fly. A review of lessons learned from flight controller training suggests how they could be applied to future human spaceflight endeavors, including missions to the moon or to Mars. The lessons learned from operating the space shuttle for over thirty years will help the space industry build the next human transport space vehicle.

Dittermore, Gary; Bertels, Christie

2011-01-01

422

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.

423

Machining Damage in Edge Trimming of CFRP  

Microsoft Academic Search

Conventional machining processes such as turning, milling, drilling, abrasive cutting, and grinding are commonly used to bring composite parts to final shape and assembly requirements. However, due to the layered nature of these materials, their machining may generate undesirable defects such as delamination and high surface roughness. The service life of composite components is believed to be highly dependent on

Jamal Sheikh-Ahmad; Nebu Urban; Hossein Cheraghi

2012-01-01

424

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

425

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

426

Participation in the U.S. Department of Energy`s Electric and Hybrid Vehicle Site Operator`s Program. Final report  

SciTech Connect

The Center for Electrochemical Systems and Hydrogen Research (CESHR), a department of the Texas Engineering Station (TEES) at Texas A and M University (TAMU), has been involved in education, demonstration, research development, and testing of EVs and their components since 1988. CESHR`s participation in the US Department of Energy (DOE) Electric Vehicle and Site Operators` Programs (SOP) started in August 1991. The South Central Electric Vehicle Consortium (SCEVC), a CESHR-lead group of utilities and private companies in Texas and neighboring States, was organized at about the same time. The SCEVC has helped bring together electric vehicle (EV) fleet owners and operators in the south-central region of the country (Texas, Oklahoma, and Louisiana). The DOE, the SCEVC, TEES and the State of Texas Governor`s Energy Management Office supported the demonstration and field testing of EVs in the region. CESHR was, and continues to be, actively involved in the research in new materials for advanced batteries and in proton exchange membrane fuel cells for transportation applications. The above efforts at CESHR have been carried out by a dedicated team of engineering and electrochemical staff and graduate and undergraduate students in chemical, electrical, and mechanical engineering. The projects were supported by a cost share of 40%. The laboratory facilities available at CESHR are fully equipped for testing EV batteries of different technologies on programmable load profiles and other EV components.

NONE

1996-12-31

427

A Fire Safety Certification System for Board and Care Operators and Staff. SBIR Phase I: Final Report.  

ERIC Educational Resources Information Center

This report describes the development and pilot testing of a fire safety certification system for board and care operators and staff who serve clients with developmental disabilities. During Phase 1, training materials were developed, including a trainer's manual, a participant's coursebook a videotape, an audiotape, and a pre-/post test which was

Walker, Bonnie L.

428

Final Report for LDRD Project 05-ERD-050: "Developing a Reactive Chemistry Capability for the NARAC Operational Model (LODI)"  

SciTech Connect

In support of the National Security efforts of LLNL, this project addressed the existing imbalance between dispersion and chemical capabilities of LODI (Lagrangian Operational Dispersion Integrator--the NARAC operational dispersion model). We have demonstrated potentially large effects of atmospheric chemistry on the impact of chemical releases (e.g., industrial chemicals and nerve agents). Prior to our work, LODI could only handle chains of first-order losses (exponential decays) that were independent of time and space, limiting NARAC's capability to respond when reactive chemistry is important. We significantly upgraded the chemistry and aerosol capability of LODI to handle (1) arbitrary networks of chemical reactions, (2) mixing and reactions with ambient species, (3) evaporation and condensation of aerosols, and (4) heat liberated from chemical reactions and aerosol condensation (which can cause a cold and dense plume hugging the ground to rise into the atmosphere, then descend to the ground again as droplets). When this is made operational, it will significantly improve NARAC's ability to respond to terrorist attacks and industrial accidents that involve reactive chemistry, including many chemical agents and toxic industrial chemicals (TICS). As a dual-use, the resulting model also has the potential to be a state-of-the-art air-quality model. Chemical releases are the most common type of airborne hazardous release and many operational applications involve such scenarios. The new capability we developed is therefore relevant to the needs of the Department of Energy (DOE), Department of Homeland Security (DHS) and Department of Defense (DoD).

Cameron-Smith, P; Grant, K; Connell, P

2008-02-11

429

Final Environmental Assessment for the construction and operation of an office building at the Stanford Linear Accelerator Center. Part 2  

SciTech Connect

The Department of Energy (DOE) has prepared an Environmental Assessment (EA), DOE/EA-1107, analyzing the environmental effects relating to the construction and operation of an office building at the Stanford Linear Accelerator Center (SLAC). SLAC is a national facility operated by Stanford University, California, under contract with DOE. The center is dedicated to research in elementary particle physics and in those fields that make use of its synchrotron facilities. The objective for the construction and operation of an office building is to provide adequate office space for existing SLAC Waste Management (WM) personnel, so as to centralize WM personnel and to make WM operations more efficient and effective. Based on the analyses in the EA, the DOE has determined that the proposed action does 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 (NEPA). Therefore, the preparation of an Environmental Impact Statement is not required. This report contains the Environmental Assessment, as well as the Finding of No Significant Impact (FONSI).

NONE

1995-08-01

430

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.

431

A Study of Operator and Mechanic Training Needs in the Transit Industry. Volume I, Findings and Conclusions. Final Report.  

ERIC Educational Resources Information Center

Surveys of 188 transit properties and on-site visits were conducted to determine training needs of operators and mechanics in the urban mass transportation industry. Volume I presents findings and conclusions of the study with reference to survey methodology, site visit interviews and observations, questionnaire results, and specific

Henderson, Harold L.; And Others

432

Design and Performance of a Converter Optimized AC Machine  

Microsoft Academic Search

The design and performance of a unique concentrated winding machine specifically designed for operation with a static power converter is described. When operating in tonjunction with a converter supply, the machine is theoretically capable of 15 percent more power output for the same active copper and iron than a conventionally designed synchronous machine of the same rating. The performance of

Thomas A. Lipo; Feng X. Wang

1984-01-01

433

New Pump and Treat Facility Remedial Action Work Plan for Test Area North (TAN) Final Groundwater Remediation, Operable Unit 1-07B  

SciTech Connect

This remedial action work plan identifies the approach and requirements for implementing the medical zone remedial action for Test Area North, Operable Unit 1-07B, at the Idaho National Engineering and Environmental Laboratory (INEEL). This plan details management approach for the construction and operation of the New Pump and Treat Facility. As identified in the remedial design/remedial action scope of work, a separate remedial design/remedial action work plan will be prepared for each remedial component of the Operable Unit 1-07B remedial action. This work plan was originally prepared as an early implementation of the final Phase C remediation. At that time, The Phase C implementation strategy was to use this document as the overall Phase C Work Plan and was to be revised to include the remedial actions for the other remedial zones (hotspot and distal zones). After the completion of Record of Decision Amendment: Technical Support Facility Injection Well (TSF-05) and Surrounding Groundwater Contamination (TSF-23) and Miscellaneous No Action Sites, Final Remedial Action, it was determined that each remedial zone would have it own stand-alone remedial action work plan. Revision 1 of this document converts this document to a stand-alone remedial action plan specific to the implementation of the New Pump and Treat Facility used for plume remediation within the medical zone of the OU 1-07B contaminated plume.

D. Vandel

2003-09-01

434

The Intimate Machine  

NSDL National Science Digital Library

This episode of the PBS television show Scientific American Frontiers, entitled "The Intimate Machine," aired on October 22, 2002. The show is divided into four segments. Interactive, animated computer characters created at the MIT Media Lab are the focus of the first part. The second shows a virtual dog that, just like a real pet, can be trained. Advanced monitoring devices that recognize human emotions are examined in the third segment, while the final part demonstrates a furry robot that emulates human emotions. In addition to being able to view the hour-long episode in streaming video on this site, users can also browse certain Web features.

2002-01-01

435

Tool Path Planning Generation For Finish Machining of Freeform Surfaces in the Cybercut Process Planning Pipeline  

E-print Network

for the finishing operation. Machining large surfaces withmachining op- eration. Tools of small diameter are used for the finishing operation.machining criterion of specified design- tolerance. Feed-forward Marching Most of the cutting operation

Wright, Paul K; Dornfeld, David; Sundararajan, V.; Misra, Debananda

2007-01-01

436

Analysis of radiation exposure for troop observers, Exercise Desert Rock VI, Operation Teapot. Final report 1 Mar-15 Jul 80  

SciTech Connect

The radiation doses to troop observers and volunteer observers for Exercise Desert Rock VI are reconstructed for each applicable shot of Operation Teapot (1955). Initial neutron and gamma radiation doses are determined from transport codes ATR4 and ATR4.1. Residual radiation contours and decay rates are established through a new automated procedure that utilizes raw data in regression analysis to fit space-time models. Troop operations data are combined with the radiological data to determine integrated dose. Uncertainties are calculated for each parameter. The volunteers received the highest observer--1.6 rem gamma and 4.5 rem neutron. The highest dose received by troop observers was 1.4 rem gamma and 1.4 rem neutron at Shot Tesla.

Goetz, J.; McGahan, J.; Kaul, D.; Weitz, R.; Klemm, J.

1980-07-15

437

A new cell formation problem with the consideration of multifunctional machines and in-route machines dissimilarity - A two phase solution approach  

Microsoft Academic Search

The purpose of this paper is to develop a variety of cell formation problem (CFP) that considers new concepts. Due to utilizing the machine flexibility causing system flexibility, multifunctional machines are used in the CFP. Machine-operation and part-operation are defined to introduce machine capabilities and part requirements, respectively. A novel solution approach with two phases is presented to solve the

I. Mahdavi; N. Tahami Baher; E. Teymourian

2010-01-01

438

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

439

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

440

Machine Design  

NSDL National Science Digital Library

This website, the homepage of Machine Design.com, contains resources on a variety of information for engineers and technicians related to devices, components, design applications, products, and systems in the manufacturing technology sector. The site also features a CAD library, eBooks, audiovisual aids, webinars, whitepapers and a reference center. Some of the resources require a free login. The page offers an RSS feed to keep users up to date on new resources. A free login may be required to access some of these items.

441

Diamond turning machine controller implementation  

SciTech Connect

The standard controller for a Pnuemo ASG 2500 Diamond Turning Machine, an Allen Bradley 8200, has been replaced with a custom high-performance design. This controller consists of four major components. Axis position feedback information is provided by a Zygo Axiom 2/20 laser interferometer with 0.1 micro-inch resolution. Hardware interface logic couples the computers digital and analog I/O channels to the diamond turning machine`s analog motor controllers, the laser interferometer, and other machine status and control information. It also provides front panel switches for operator override of the computer controller and implement the emergency stop sequence. The remaining two components, the control computer hardware and software, are discussed in detail below.

Garrard, K.P.; Taylor, L.W.; Knight, B.F.; Fornaro, R.J.

1988-12-01

442

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

443

(Design and operation of a portable ethanol plant). Final report. [Small-scale (5-10 gal/h)  

SciTech Connect

A portable distillation plant with a packed reflux column was designed and built that is capable of producing 10 to 15 gallons of 190 proof ethanol per hour. Several kinds of feedstocks were used to produce ethanol. Corn served as a good feedstock and was easily processed in the still. However, because of the present high prices of corn and the manual labor for operation it cannot be used to produce ethanol commercially as a fuel at prices competitive with petroleum fuels. Cellulosic feedstocks such as paper, sawdust and grasses and leaves were enzymatically degraded to sugars and fermented to ethanol. Because of the manual labor required and small capacity of the still total operation costs would preclude competitive fuel prices. However, such a plant could be used on a farm for production of a supplementary fuel or for independence from petroleum fuels. The trials with cellulosic materials did give evidence that such feedstocks are plausible sources for ethanol when produced on a large scale in an automated production plant. On a large scale basis ethanol could be produced competitively as an alternative fuel for gasoline.

Glenn, K.C.

1983-09-25

444

Speed-Selector Guard For Machine Tool  

NASA Technical Reports Server (NTRS)

Simple guardplate prevents accidental reversal of direction of rotation or sudden change of speed of lathe, milling machine, or other machine tool. Custom-made for specific machine and control settings. Allows control lever to be placed at only one setting. Operator uses handle to slide guard to engage or disengage control lever. Protects personnel from injury and equipment from damage occurring if speed- or direction-control lever inadvertently placed in wrong position.

Shakhshir, Roda J.; Valentine, Richard L.

1992-01-01

445

Mechanical behavior of titanium aluminide under engine operating conditions. Final report, 1 July 1988-30 September 1990  

SciTech Connect

A brief study to optimize the heat treatment for a useful balance of mechanical properties in Ti-25%Al10%Nb-3%V-1%Mo (atomic percent) was conducted. The selected heat treatment consisted of solution treatment at 1115 deg C (in the alpha + beta field, about 25 deg C below the transus temperature) in vacuum for 1 hour followed by cooling to room temperature in argon, followed by aging at 760 deg C in vacuum for 8 hours, followed by cooling at room temperature in argon. This treatment resulted in fine transformed microstructure with high (25%) volume fraction of primary alpha2-phase. This treatment resulted in superior fatigue crack growth resistance while still maintaining good tensile and creep properties. This solution + age heat treatment was used for study of the effects of several factors such as temperature (25, 425, 540, and 650 deg C), environment (air and ultrahigh vacuum), frequency (0.01 to 1 Hz), R-ratio (0.1 and 0.8), and orientation (parallel and perpendicular to the final rolling direction) on the fatigue crack growth behavior.... Fatigue crack growth, Titanium aluminide plus niobium, Elevated temperature, Environmental influence, Heat treatment, Fractography.

Jayaraman, N.

1992-08-01

446

Development of electrolysis-cell separator for 125/sup 0/C operation. Advanced alkaline electrolysis cell development. Final report  

SciTech Connect

This report contains the findings of a seven-month contracted effort. The major technical task involved a 125/sup 0/C operating temperature test of the 20 v/o polybenzimidazole (PBI) - 80 v/o potassium titanate (K/sub 2/TiO/sub 3/) separator in combination with the nickel-molybdenum cathode electrocatalyst system dubbed the C-AN cathode using the ARIES test system which was developed previously. The test of the PBI-K/sub 2/TiO/sub 3/ separator was only partially successful. The anticipated 1.85 (75/sup 0/C) and 1.75 volt per cell (100/sup 0/C) input requirement at 550 ma/cm/sup 2/ were surpassed slightly. The test module operated stably for about 550 hr. Although there were some mechanical difficulties with the ARIES test unit, testing at 125/sup 0/C proceeded from 745 hr on test until the test was terminated at 2318 operating hours to allow diagnostic disassembly. The input voltage degraded to a value of 1.82 volt per cell at 125/sup 0/C which is unacceptable. Diagnostic disassembly showed the PBI portion of the separator was no longer present. PBI had been shown to be stable in 123/sup 0/C, 45 w/o KOH solutions in a 1000-hr test. The attack is suggested to be attributable to a peroxide or perchlorate type oxidizer which would be unique to the electrolysis mode and probably not present in alkaline fuel cell applications. Recommendations for further testing include an evaluation of the chemical compatibility of PBI with alkaline/oxidizer solutions and endurance testing the C-AN cathode with new improved anode structures at 125/sup 0/C using asbestos separators in combination with a silicate saturated KOH electrolyte. Demonstration of the stability of this 1.65 volt per cell (90% voltage efficiency) technology at 500 ma/cm/sup 2/ will document an inexpensive and intelligent hydrogen production process which will satisfy the needs of the United States in the 1990s.

Murray, J N

1983-03-01

447

Trends and developments in industrial machine vision: 2013  

NASA Astrophysics Data System (ADS)

When following current advancements and implementations in the field of machine vision there seems to be no borders for future developments: Calculating power constantly increases, and new ideas are spreading and previously challenging approaches are introduced in to mass market. Within the past decades these advances have had dramatic impacts on our lives. Consumer electronics, e.g. computers or telephones, which once occupied large volumes, now fit in the palm of a hand. To note just a few examples e.g. face recognition was adopted by the consumer market, 3D capturing became cheap, due to the huge community SW-coding got easier using sophisticated development platforms. However, still there is a remaining gap between consumer and industrial applications. While the first ones have to be entertaining, the second have to be reliable. Recent studies (e.g. VDMA [1], Germany) show a moderately increasing market for machine vision in industry. Asking industry regarding their needs the main challenges for industrial machine vision are simple usage and reliability for the process, quick support, full automation, self/easy adjustment at changing process parameters, "forget it in the line". Furthermore a big challenge is to support quality control: Nowadays the operator has to accurately define the tested features for checking the probes. There is an upcoming development also to let automated machine vision applications find out essential parameters in a more abstract level (top down). In this work we focus on three current and future topics for industrial machine vision: Metrology supporting automation, quality control (inline/atline/offline) as well as visualization and analysis of datasets with steadily growing sizes. Finally the general trend of the pixel orientated towards object orientated evaluation is addressed. We do not directly address the field of robotics taking advances from machine vision. This is actually a fast changing area which is worth an own contribution.

Niel, Kurt; Heinzl, Christoph

2014-03-01

448

Course info Machine Learning  

E-print Network

Course info Machine Learning Real life problems Lecture 1: Machine Learning Problem Qinfeng (Javen) Shi 28 July 2014 Intro. to Stats. Machine Learning COMP SCI 4401/7401 Qinfeng (Javen) Shi Lecture 1: Machine Learning Problem #12;Course info Machine Learning Real life problems Table of Contents I 1 Course

Shi, Qinfeng "Javen"

449

A Complexity Science-Based Framework for Global Joint Operations Analysis to Support Force Projection: LDRD Final Report.  

SciTech Connect

The military is undergoing a significant transformation as it modernizes for the information age and adapts to address an emerging asymmetric threat beyond traditional cold war era adversaries. Techniques such as traditional large-scale, joint services war gaming analysis are no longer adequate to support program evaluation activities and mission planning analysis at the enterprise level because the operating environment is evolving too quickly. New analytical capabilities are necessary to address modernization of the Department of Defense (DoD) enterprise. This presents significant opportunity to Sandia in supporting the nation at this transformational enterprise scale. Although Sandia has significant experience with engineering system of systems (SoS) and Complex Adaptive System of Systems (CASoS), significant fundamental research is required to develop modeling, simulation and analysis capabilities at the enterprise scale. This report documents an enterprise modeling framework which will enable senior level decision makers to better understand their enterprise and required future investments.

Lawton, Craig R.

2015-01-01

450

United States Department of Energy`s electric and hybrid vehicle site operator program. Final report, April 1991--September 1996  

SciTech Connect

Drivers in San Juan County, which, is comprised of islands making for short distances on rural (low speed limits) roads, found that present day electric vehicle technology can work in certain applications. An honest, accurate appraisal of the expectations of the vehicle is essential. When needs and capabilities are able to match up, then successful ownership and operation can occur. Today`s EV technology can accomplish certain driving tasks. Careful, honest analysis what is expected of the car can lead to a rewarding EV driving experience. Providing recharge locations in the community proved essential of the peace of mind of the EV driver. Since heating and air conditioning represent electric loads whose reduces range, a moderate to warm year round climate is best for today`s EV. Also, even limited solar recharging has been determined to improve battery pack life.

NONE

1997-11-06

451

An industrial sewing machine variable speed controller  

Microsoft Academic Search

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

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

1992-01-01

452

Study of the effect of machining parameters on the machining characteristics in electrical discharge machining of tungsten carbide  

Microsoft Academic Search

Electrical discharge machining (EDM) is a process for shaping hard metals and forming deep and complex-shaped holes by arc erosion in all kinds of electro-conductive materials. The objective of this research is to study the influence of operating parameters of EDM of tungsten carbide on the machining characteristics. The effectiveness of the EDM process with tungsten carbide is evaluated in

S. H. Lee; X. P. Li

2001-01-01

453

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

454

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

455

Aerosols generated during beryllium machining.  

PubMed

Some beryllium processes, especially machining, are associated with an increased risk of beryllium sensitization and disease. Little is known about exposure characteristics contributing to risk, such as particle size. This study examined the characteristics of beryllium machining exposures under actual working conditions. Stationary samples, using eight-stage Lovelace Multijet Cascade Impactors, were taken at the process point of operation and at the closest point that the worker would routinely approach. Paired samples were collected at the operator's breathing zone by using a Marple Personal Cascade Impactor and a 35-mm closed-faced cassette. More than 50% of the beryllium machining particles in the breathing zone were less than 10 microns in aerodynamic diameter. This small particle size may result in beryllium deposition into the deepest portion of the lung and may explain elevated rates of sensitization among beryllium machinists. PMID:10652683

Martyny, J W; Hoover, M D; Mroz, M M; Ellis, K; Maier, L A; Sheff, K L; Newman, L S

2000-01-01

456

Moving Along With Simple Machines A Lesson in Simple Machines  

NSDL National Science Digital Library

The purpose of this activity is to allow students to study simple machines, how they operate and how they differ from each other. This activity/lesson was developed by a K-12 science teacher in the American Physiological Society?s 2010 Frontiers in Physiology Program. For more information on this program, please visit www.frontiersinphys.org.

Ms. Josefina Goodwin (Raleigh Egypt High School)

2011-04-01

457

Real-Time Mode-Machines  

Microsoft Academic Search

Modes are a natural abstract way of structuring the behaviour of complex systems. The different ways in which a system can operate are associated with different modes, and transitions link modes to form mode-machines. However, mode-machines need a precise semantics if they are to be used for specifying the behaviour of critical systems. This paper analyses the possible relationships between

Stephen Paynter

1996-01-01

458

The Serger (Overlock) Machine. Module 10.  

ERIC Educational Resources Information Center

This module on the purpose and use of the serger machine, one in a series on clothing construction for industrial sewing machine operators designed for student self-study, contains nine 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.

459

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.

460

Socially guided machine learning  

E-print Network

Social interaction will be key to enabling robots and machines in general to learn new tasks from ordinary people (not experts in robotics or machine learning). Everyday people who need to teach their machines new things ...

Thomaz, Andrea Lockerd

2006-01-01

461

Design and experimental validation for direct-drive fault-tolerant permanent-magnet vernier machines.  

PubMed

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. PMID:25045729

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

2014-01-01

462

Piston for dry crankcase machines  

Microsoft Academic Search

There are several problems when such machines are operated in an inert gas medium. The major problem is at the joint between the pin and the bearing. The pin surface gets damaged because of the small rocking angle (less than the angle between adjacent needles), high .contact pressures (above 104 MPa), and comparatively large rocking frequency. Increasing the hardness of

A. V. Borodin; N. Kh. Khamitov

1990-01-01

463

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.

464

Turing Machines A Turing machine M is  

E-print Network

to perform computations. A function f is Turing-computable iff there exists some TM M such that f(x) = y iff1 Turing Machines A Turing machine M is: Q, a set of internal states. , the input alphabet. , tape of Turing machine M on input w Initial state q0, tape w, blanks around w, read-write head at first symbol

Bylander, Tom

465

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

466

Operation of beam line facilities for real-time x-ray studies at Sector 7 of the advanced photon source. Final Report  

SciTech Connect

This Final Report documents the research accomplishments achieved in the first phase of operations of a new Advanced Photon Source beam line (7-ID MHATT-CAT) dedicated to real-time x-ray studies. The period covered by this report covers the establishment of a world-class facility for time-dependent x-ray studies of materials. During this period many new and innovative research programs were initiated at Sector 7 with support of this grant, most notably using a combination of ultrafast lasers and pulsed synchrotron radiation. This work initiated a new frontier of materials research: namely, the study of the dynamics of materials under extreme conditions of high intensity impulsive laser irradiation.

Clarke, Roy

2003-09-10

467

Connection between machines durability during operation and the complex of physic-mechanical properties, formed during the production of critical parts  

NASA Astrophysics Data System (ADS)

The paper presents the effect of the processing technological structure on the hardening of metals and alloys by choosing the rational parameters of thermomechanical forming components at various stages of processing. The dependencies that can predict the destruction of the product during operation, depending on the structure oi the resulting metal fabrication are shown.

Shibakov, V. G.; Pankratov, D. L.; Shibakov, R. V.

2014-12-01

468

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

469

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

470

49 CFR 236.772 - Machine, interlocking.  

Code of Federal Regulations, 2010 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 ...

2010-10-01

471

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

472

DC Machine  

NSDL National Science Digital Library

The effect of the commutator is to produce a fixed spatial distribution of current directions in the armature conductors (shown as blue & green circles) independent of shaft rotation. The field created by these currents (armature reaction) is vertically directed along the quadrature axis. The field established by the excitation of the stator poles is directed along the horizontal direct axis. This package presents computer models of electric machines based on the space vector formulation leading to the assessment of the dynamic performance of open- and closed-loopac and dc drive systems. The Simulink/Matlab implementation is adopted because of its inherent integration of vectorized system representations in block diagram form, of numerical analysis methods, of graphical portrayal of time evolutions of signals combined with the simple realization of the functionality of controllers and power electronic excitations. The development of Simulink models of drive assemblies is a relatively simple task consisting of combining input-output block representation of the various components making up the system; these blocks can readily be reused (utilizing standard copy-and-paste techniques) to modify the system components or the configuration of the system. This approach provides a powerful design tool because of the ease of observing the effects of parameters modifications and of differing system configurations and control strategies.

Riaz, Mahmoud

2012-08-29

473

A characterization of the power of vector machines  

Microsoft Academic Search

Random access machines (RAMs) are usually defined to have registers that hold integers. While this captures in part the structure of a commercial computer, it overlooks an implementation-dependent feature of most binary oriented machines, namely their ability to operate bit by bit on the bit vectors used to represent integers. Typical operations are bit-wise Boolean operations (and, or, not, etc.)

Vaughan R. Pratt; Michael O. Rabin; Larry J. Stockmeyer

1974-01-01

474

40 CFR 63.462 - Batch cold cleaning machine standards.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Batch cold cleaning machine standards. 63.462 Section 63...Cleaning 63.462 Batch cold cleaning machine standards. (a) Each owner or operator...an immersion batch cold solvent cleaning machine shall comply with the requirements...

2012-07-01

475

40 CFR 63.462 - Batch cold cleaning machine standards.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Batch cold cleaning machine standards. 63.462 Section 63...Cleaning 63.462 Batch cold cleaning machine standards. (a) Each owner or operator...an immersion batch cold solvent cleaning machine shall comply with the requirements...

2010-07-01

476

49 CFR 214.341 - Roadway maintenance machines.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Roadway maintenance machines. 214.341 Section 214.341 Transportation...Protection 214.341 Roadway maintenance machines. (a) Each employer shall include...operate or work near roadway maintenance machines. Those provisions shall address:...

2010-10-01

477

Machines and the Body between Anatomy and Pathology  

E-print Network

Machines and the Body between Anatomy and Pathology Domenico Bertoloni Meli* 1. Introduction of anatomists sought to explain the operations of the body in terms of machines of varying nature and complexity. These machines responded to shifting criteria of intelligibility at the time: whereas Aristotelian or Galenic

Bertoloni Meli, Domenico

478

40 CFR 63.462 - Batch cold cleaning machine standards.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Batch cold cleaning machine standards. 63.462 Section 63...Cleaning 63.462 Batch cold cleaning machine standards. (a) Each owner or operator...an immersion batch cold solvent cleaning machine shall comply with the requirements...

2011-07-01

479

49 CFR 214.341 - Roadway maintenance machines.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Roadway maintenance machines. 214.341 Section 214.341 Transportation...Protection 214.341 Roadway maintenance machines. (a) Each employer shall include...operate or work near roadway maintenance machines. Those provisions shall address:...

2012-10-01

480

49 CFR 214.341 - Roadway maintenance machines.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Roadway maintenance machines. 214.341 Section 214.341 Transportation...Protection 214.341 Roadway maintenance machines. (a) Each employer shall include...operate or work near roadway maintenance machines. Those provisions shall address:...

2013-10-01

481

49 CFR 214.341 - Roadway maintenance machines.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Roadway maintenance machines. 214.341 Section 214.341 Transportation...Protection 214.341 Roadway maintenance machines. (a) Each employer shall include...operate or work near roadway maintenance machines. Those provisions shall address:...

2011-10-01

482

40 CFR 63.462 - Batch cold cleaning machine standards.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Batch cold cleaning machine standards. 63.462 Section 63...Cleaning 63.462 Batch cold cleaning machine standards. (a) Each owner or operator...an immersion batch cold solvent cleaning machine shall comply with the requirements...

2013-07-01

483

40 CFR 63.462 - Batch cold cleaning machine standards.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 false Batch cold cleaning machine standards. 63.462 Section 63...Cleaning 63.462 Batch cold cleaning machine standards. (a) Each owner or operator...an immersion batch cold solvent cleaning machine shall comply with the requirements...

2014-07-01

484

Saturation measurements in AC machines using carrier signal injection  

Microsoft Academic Search

This paper presents a technique for measuring the position and magnitude of saliencies in AC machines by injecting a balanced, three-phase, carrier signal. The technique allows detection of where a machine saturates under a full range operating conditions, without any modification to the machine design or construction. From these measurements insight into the causes of saturation and suggestions for improvement

M. L. Aime; M. W. Degnert; R. D. LorenzfS

1998-01-01

485

Geodetic Instrumentation for use on Machine Bored Tunnels  

E-print Network

Geodetic Instrumentation for use on Machine Bored Tunnels By Nod Clarke-Hackston International on Sophiaspoor Continuously Boring Machine June 24-26, 2008 ETH Zurich #12;Lötschberg TBM June 24-26, 2008 ETH Typical displays for Machine Operator June 24-26, 2008 ETH Zurich #12;Laser Based Guidance system

486

Looking west at Machine Shop (Bldg. 163) south bay interior. ...  

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

Looking west at Machine Shop (Bldg. 163) south bay interior. Note the Shaw 15-ton bridge crane. This portion of the building housed machine tools and locomotive component repair functions that supported the erecting shop operations - Atchison, Topeka, Santa Fe Railroad, Albuquerque Shops, Machine Shop, 908 Second Street, Southwest, Albuquerque, Bernalillo County, NM

487

Selected Sewing Machines Evaluated for Use by Blind Students.  

ERIC Educational Resources Information Center

Describes a study using blind high school students and a repeated subject design to evaluate six selected sewing machines. The major purposes were to compare and analyze specific sewing machine features and to determine the machines' overall ease of performance when operated by blind students. (CT)

MacDonald, Nora M.; Huffman, Vera J.

1982-01-01

488

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

489

Method of fabricating a micro machine  

DOEpatents

A micro machine may be in or less than the micrometer domain. The micro machine may include a micro actuator and a micro shaft coupled to the micro actuator. The micro shaft is operable to be driven by the micro actuator. A tool is coupled to the micro shaft and is operable to perform work in response to at least motion of the micro shaft.

Stalford, Harold L

2014-11-11

490

Probabilistic classification vector machines.  

PubMed

In this paper, a sparse learning algorithm, probabilistic classification vector machines (PCVMs), is proposed. We analyze relevance vector machines (RVMs) for classification problems and observe that adopting the same prior for different classes may lead to unstable solutions. In order to tackle this problem, a signed and truncated Gaussian prior is adopted over every weight in PCVMs, where the sign of prior is determined by the class label, i.e., +1 or -1. The truncated Gaussian prior not only restricts the sign of weights but also leads to a sparse estimation of weight vectors, and thus controls the complexity of the model. In PCVMs, the kernel parameters can be optimized simultaneously within the training algorithm. The performance of PCVMs is extensively evaluated on four synthetic data sets and 13 benchmark data sets using three performance metrics, error rate (ERR), area under the curve of receiver operating characteristic (AUC), and root mean squared error (RMSE). We compare PCVMs with soft-margin support vector machines (SVM(Soft)), hard-margin support vector machines (SVM(Hard)), SVM with the kernel parameters optimized by PCVMs (SVM(PCVM)), relevance vector machines (RVMs), and some other baseline classifiers. Through five replications of twofold cross-validation F test, i.e., 5 x 2 cross-validation F test, over single data sets and Friedman test with the corresponding post-hoc test to compare these algorithms over multiple data sets, we notice that PCVMs outperform other algorithms, including SVM(Soft), SVM(Hard), RVM, and SVM(PCVM), on most of the data sets under the three metrics, especially under AUC. Our results also reveal that the performance of SVM(PCVM) is slightly better than SVM(Soft), implying that the parameter optimization algorithm in PCVMs is better than cross validation in terms of performance and computational complexity. In this paper, we also discuss the superiority of PCVMs' formulation using maximum a posteriori (MAP) analysis and margin analysis, which explain the empirical success of PCVMs. PMID:19398403

Chen, Huanhuan; Tino, Peter; Yao, Xin

2009-06-01

491

Final environmental assessment and Finding-of-No-Significant-Impact - drum storage facility for interim storage of materials generated by environmental restoration operations  

SciTech Connect

The Department of Energy (DOE) has prepared an Environmental Assessment (EA), DOE/EA-0995, for the construction and operation of a drum storage facility at Rocky Flats Environmental Technology Site, Golden, Colorado. The proposal for construction of the facility was generated in response to current and anticipated future needs for interim storage of waste materials generated by environmental restoration operations. A public meeting was held on July 20, 1994, at which the scope and analyses of the EA were presented. The scope of the EA included evaluation of alternative methods of storage, including no action. A comment period from July 5, 1994 through August 4, 1994, was provided to the public and the State of Colorado to submit written comment on the EA. No written comments were received regarding this proposed action, therefore no comment response is included in the Final EA. Based on the analyses in the EA, DOE has determined that the proposed action would not significantly affect the quality of the human environment within the meaning of the National Environmental Policy Act of 1969 (NEPA). Therefore, preparation of an Environmental Impact Statement is not required and the Department is issuing this Finding of No Significant Impact.

Not Available

1994-09-01

492

Zeeman Catastrophe Machine Model  

NSDL National Science Digital Library

The Zeeman Catastrophe Machine Model shows the rotational motion of wheel that is free to rotate but is connected to two elastics, one which is free to move in the xy-plane, and one that is set a fixed distance d away. The model initiates in a steady state where there is no rotational velocity and the magnitude of the tensions in the two elastics are equal. The user can drag the blue point to change the torque on the wheel, or they can enter values in the input fields on the top panel. The user can also change the angle theta, the coefficient of dampening, the spring constant, the moment of inertia. The Zeeman Catastrophe Machine Model was developed as a final project in a sophomore-level Computational Physics course (Phy 200) using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the jar file will run the program if Java is installed. You can modify this simulation if you have EJS installed by right-clicking within the map and selecting "Open Ejs Model" from the pop-up menu item.

Glasmann, Andreu

2012-06-26

493

Bacteriological quality of drinks from vending machines.  

PubMed

A survey on the bacteriological quality of both drinking water and flavoured drinks from coin-operated vending machines is reported. Forty-four per cent of 25 drinking water samples examined contained coliforms and 84% had viable counts of greater than 1000 organisms ml at 30 degrees C. Thirty-one flavoured drinks were examined; 6% contained coliforms and 39% had total counts greater than 1000 organisms ml. It is suggested that the D.H.S.S. code of practice on coin-operated vending machines is not being followed. It is also suggested that drinking water alone should not be dispensed from such machines. PMID:3794325

Hunter, P R; Burge, S H

1986-12-01

494

JBK-75 stainless steel machinability study  

SciTech Connect

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. Twelve parts were machined utilizing an experimental design to determine all possible interactions between cutting speeds and feedrates. To evaluate the machinability of the material, quantitative measures in tool life, tool wear, surface finish, chip control, and material removal rates were analyzed. Benefits gained from this study are: higher material removal rates, longer tool life, minimal tool wear, improved chip control and reliability, increased productivity, and cost minimization.

McManigle, A.P.; Simonis, A.W.

1993-09-02

495

Experimental investigation on the influence of electrochemical machining parameters on machining rate and accuracy in micromachining domain  

Microsoft Academic Search

Non-conventional machining is increasing in importance due to some of the specific advantages which can be exploited during micromachining operation. Electrochemical micromachining (EMM) appears to be a promising technique, since in many areas of application, it offers several special advantages that include higher machining rate, better precision and control, and a wider range of materials that can be machined. A

B Bhattacharyya; J Munda

2003-01-01

496

Brake Wear and Performance Test Final December 2009  

E-print Network

on the operation of the PBBT machine. The work performed under the project included: · Drafting of the project Statement of Work · Drafting of the Field Operation Test Plan · Downselection of viable PBBT machines, and training Tennessee Department of Safety (TDOS) Staff on the operation of the PBBT machine. 17. Key Words

497

Medicaid program; cost limit for providers operated by units of government and provisions to ensure the integrity of federal-state financial partnership. Final rule with comment period.  

PubMed

This regulation clarifies that entities involved in the financing of the non-Federal share of Medicaid payments must be a unit of government; clarifies the documentation required to support a Medicaid certified public expenditure; limits Medicaid reimbursement for health care providers that are operated by units of government to an amount that does not exceed the health care provider's cost of providing services to Medicaid individuals; requires all health care providers to receive and retain the full amount of total computable payments for services furnished under the approved Medicaid State plan; and makes conforming changes to provisions governing the State Child Health Insurance Program (SCHIP) to make the same requirements applicable, with the exception of the cost limit on reimbursement. The Medicaid cost limit provision of this regulation does not apply to: Stand-alone SCHIP program payments made to governmentally-operated health care providers; Indian Health Service (IHS) facilities and tribal 638 facilities that are paid at the all-inclusive IHS rate; Medicaid Managed Care Organizations (MCOs), Prepaid Inpatient Health Plans (PIHPs), and Prepaid Ambulatory Health Plans (PAHPs); Federally Qualified Health Centers (FQHCs) and Rural Health Clinics (RHCs). Moreover, disproportionate share hospital (DSH) payments and payments authorized under Section 701(d) and Section 705 of the Benefits Improvement Protection Act of 2000 are not subject to the newly established Medicaid cost limit for governmentally-operated health care providers. Except as noted above, all Medicaid payments and SCHIP payments made under the authority of the State plan and under waiver and demonstration authorities, as well as associated State Medicaid and SCHIP financing arrangements, are subject to all provisions of this regulation. Finally, this regulation solicits comments from the public on issues related to the definition of the Unit of Government. PMID:17577965

2007-05-29

498

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

499

Sustainment Operations Team Final Report  

E-print Network

Improvement of Mission Capable Rate (MCR) depends on factors such as transportation & logistics, resource loading & scheduling, and Available Parts & materials (AP&M). As shown in Figure 1, AP&M is a function of forecasting ...

Harris, Wesley

500

Operation Crossroads-1946. Final report  

SciTech Connect

Crossroads was the first peacetime nuclear weapons test series. It was conducted at Bikini Atoll in 1946. Report emphasis is on the radiological safety of the personnel. Available records on personnel exposure are summarized.

Berkhouse, L.; Hallowell, J.H.; McMullan, F.W.; Davis, S.E.; Jones, C.B.

1984-05-01