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1

Solving complex maintenance planning optimization problems using stochastic simulation and multi-criteria fuzzy decision making  

NASA Astrophysics Data System (ADS)

One of the most important factors in the operations of many cooperations today is to maximize profit and one important tool to that effect is the optimization of maintenance activities. Maintenance activities is at the largest level divided into two major areas, corrective maintenance (CM) and preventive maintenance (PM). When optimizing maintenance activities, by a maintenance plan or policy, we seek to find the best activities to perform at each point in time, be it PM or CM. We explore the use of stochastic simulation, genetic algorithms and other tools for solving complex maintenance planning optimization problems in terms of a suggested framework model based on discrete event simulation.

Tahvili, Sahar; Österberg, Jonas; Silvestrov, Sergei; Biteus, Jonas

2014-12-01

2

Multi-resolution Social Network Community Identification and Maintenance on Big Data Platform  

E-print Network

Multi-resolution Social Network Community Identification and Maintenance on Big Data Platform topics in rich social network content simultaneously. Keywords-community identification; Big Data {korpe,oulusoy}@cs.bilkent.edu.tr Abstract--Community identification in social networks is of great

Ulusoy, �zgür

3

EMPLOYMENT PROBLEMS: INFORMAL RESOLUTION AND GRIEVANCE 7.01 Informal Resolution  

E-print Network

CHAPTER 7 EMPLOYMENT PROBLEMS: INFORMAL RESOLUTION AND GRIEVANCE PROCEDURES 7.01 Informal Resolution An academic staff member who has an employment problem that may lead to the grievance procedure the employing unit or needs information about the process to resolve employment problems. The academic staff

Sheridan, Jennifer

4

Approximate resolution of hard numbering problems  

SciTech Connect

We present a new method for estimating the number of solutions of constraint satisfaction problems. We use a stochastic forward checking algorithm for drawing a sample of paths from a search tree. With this sample, we compute two values related to the number of solutions of a CSP instance. First, an unbiased estimate, second, a lower bound with an arbitrary low error probability. We will describe applications to the Boolean Satisfiability problem and the Queens problem. We shall give some experimental results for these problems.

Bailleux, O.; Chabrier, J.J. [CRID Universite de Bourgogne, Dijon (France)

1996-12-31

5

ENVIRONMENTAL ISOTOPES FOR RESOLUTION OF HYDROLOGY PROBLEMS  

EPA Science Inventory

The use of environmental isotopes as tracers in the hydrosphere is increasing as analytical instrumentation improves and more applications are discovered. There exists still misconceptions on the role of isotopes in resolving hydrology problems. Naturally occurring isotopes in th...

6

Pediatric Enteric Feeding Techniques: Insertion, Maintenance, and Management of Problems  

SciTech Connect

Enteral feeding is considered a widespread, well-accepted means of delivering nutrition to adults and children who are unable to consume food by mouth or who need support in maintaining adequate nutrition for a variety of reasons, including acute and chronic disease states. Delivery of enteral feeding to nutritionally deprived patients may be achieved by several means. In this article, the indications and insertion of enteral access in children will be reviewed. In addition, common complications and management of problems will be discussed.

Nijs, Els L. F., E-mail: nijs@email.chop.ed [University of Pennsylvania, Department of Clinical Radiology, Children's Hospital of Philadelphia (United States); Cahill, Anne Marie, E-mail: cahill@email.chop.ed [University of Pennsylvania, Department of Radiology, Children's Hospital of Philadelphia (United States)

2010-12-15

7

A new game-theoretic approach to maintenance scheduling problems in competitive electricity markets  

Microsoft Academic Search

A new approach to unit maintenance scheduling (UMS) problems in competitive electricity markets is presented in this paper. The objectives of this study are to develop a new framework for UMS in competitive markets, to analyze a strategic behavior of profit maximizing generating companies (Gencos) in an UMS game, and to discuss equilibriums of the game from the standpoint of

Jin-Ho Kim; Jong-Keun Park

2002-01-01

8

Theoretical Problems in High Resolution Solar Physics, 2  

NASA Technical Reports Server (NTRS)

The Science Working Group for the High Resolution Solar Observatory (HRSO) laid plans beginning in 1984 for a series of workshops designed to stimulate a broadbased input from the scientific community to the HRSO mission. These workshops have the dual objectives of encouraging an early start on the difficult theoretical problems in radiative transfer, magnetohydrodynamics, and plasma physics that will be posed by the HRSO data, and maintaining current discussions of results in high resolution solar studies. This workshop was the second in the series. The workshop format presented invited review papers during the formal sessions and contributed poster papers for discussions during open periods. Both are presented.

Athay, G. (editor); Spicer, D. S. (editor)

1987-01-01

9

Application of the genetic algorithm for global scheduling and a single machine scheduling problem with periodic maintenance and semiresumable jobs  

E-print Network

This thesis considers two different scheduling problems in industrial settings. The first problem consists of minimizing the total completion time of jobs scheduled on a single machine that must undergo periodic maintenance. Additionally, if a job...

Graves, Gregory Howard

2012-06-07

10

NASA Engineering and Safety Center NDE Super Problem Resolution Team  

NASA Astrophysics Data System (ADS)

The NASA Engineering and Safety Center (NESC) is an independent organization, which was charted in the wake of the Space Shuttle Columbia accident to serve as an Agency-wide technical resource focused on engineering excellence. The objective of the NESC is to improve safety by performing in-depth independent engineering assessments, testing, and analysis to uncover technical vulnerabilities and to determine appropriate preventative and corrective actions for problems, trends or issues within NASA's programs, projects and institutions. Critical to the NESC are teams of experts in a number of core disciplines including nondestructive evaluation (NDE). These teams, designated Super Problem Resolution Teams (SPRTs), draw upon the best engineering expertise from across the Agency and include partnerships with other government agencies, national laboratories, universities and industry. The NESC NDE SPRT provides a ready resource of NDE technical expertise to support NESC Independent Technical Assessments and Investigations. The purpose of this session will be to provide an overview of the NESC and the NDE SPRT along with a few examples of NDE related problems that the team has addressed for NASA Programs. It is hoped that this session will be of interest to the general NDE community and will foster contacts with additional NDE experts that might provide future support to the NASA NESC NDE SPRT.

Prosser, W. H.

2007-03-01

11

Hybrid Particle Swarm Optimization for Hybrid Flowshop Scheduling Problem with Maintenance Activities  

PubMed Central

A hybrid algorithm which combines particle swarm optimization (PSO) and iterated local search (ILS) is proposed for solving the hybrid flowshop scheduling (HFS) problem with preventive maintenance (PM) activities. In the proposed algorithm, different crossover operators and mutation operators are investigated. In addition, an efficient multiple insert mutation operator is developed for enhancing the searching ability of the algorithm. Furthermore, an ILS-based local search procedure is embedded in the algorithm to improve the exploitation ability of the proposed algorithm. The detailed experimental parameter for the canonical PSO is tuning. The proposed algorithm is tested on the variation of 77 Carlier and Néron's benchmark problems. Detailed comparisons with the present efficient algorithms, including hGA, ILS, PSO, and IG, verify the efficiency and effectiveness of the proposed algorithm. PMID:24883414

Li, Jun-qing; Pan, Quan-ke; Mao, Kun

2014-01-01

12

Maintenance problems associated with the operation of the F402 /Pegasus/ engine in the AV-8A /Harrier/ aircraft  

NASA Technical Reports Server (NTRS)

The U.S. Marine Corp (USMC) has been operating the only V/STOL attack aircraft in the western world since 1971. Some of the maintenance problems experienced are related to the unique V/STOL design criteria of the Pegasus engine. However, the major part of the required maintenance effort is found to involve the more conventional engine problems. A description of the aircraft engine is provided and the problems resulting from V/STOL design demands are examined. Attention is given to the fuel system control, the engine air bleed, foreign object damage to the hp compressor, and the engine exhaust system.

Stanley, C. W.; Hood, W. E.

1981-01-01

13

RESOLUTION AND STABILITY ANALYSIS OF AN INVERSE PROBLEM IN ELECTRICAL IMPEDANCE TOMOGRAPHY  

E-print Network

RESOLUTION AND STABILITY ANALYSIS OF AN INVERSE PROBLEM IN ELECTRICAL IMPEDANCE TOMOGRAPHY words. elliptic inverse problem, electrical impedance tomography, conductivity imaging, stability, 15A09, 65N99 1. Introduction. In electrical impedance tomography, the problem is to #12;nd

14

The maintenance of tornadoes observed with high-resolution mobile Doppler radars.  

E-print Network

??High-resolution dual-Doppler wind syntheses and ensemble Kalman filter data assimilation experiments performed using Doppler on Wheels velocity data collected in four tornadic supercells are examined… (more)

Marquis, James

2010-01-01

15

Lightweight Relevance Filtering for Machine-Generated Resolution Problems  

E-print Network

extensive tests with a set of 285 such problems (153 small, 132 large). Vampire does well on our problem set problem, which is more realistic for user interaction, Vampire's success rate drops to 53 percent. (See

Paulson, Lawrence C.

16

The Problem of Subrayleigh Resolution in Interference Microscopy  

Microsoft Academic Search

A method allowing subwavelength resolution within the framework of optical interferometric microscopy is proposed. It is shown that overcoming the diffraction limit is not a necessary requirement. Generally speaking, “subrayleigh resolution” and “overcoming the diffraction limit” are basically different concepts. The method developed uses the all-parameter modulation of the light source and separation of the phase shifts generated due to

V. A. Andreev; K. V. Indukaev

2003-01-01

17

THE PROBLEM OF SUBRAYLEIGH RESOLUTION IN INTERFERENCE MICROSCOPY  

Microsoft Academic Search

A method allowing subwavelength resolution within the framework of optical interferometric microscopy is proposed. It is shown that overcoming the diraction limit is not a necessary requirement. Generally speaking, \\

V. A. Andreev; K. V. Indukaev

2003-01-01

18

The problem of sub-Rayleigh resolution in interference microscopy  

Microsoft Academic Search

The method allowing one to achieve sub-Rayleigh resolution in optical interferometric microscopy is offered. It is shown that for this purpose it is not necessary to overcome the diffraction limit. Generally speaking, \\

Konstantin V. Indukaev; V. A. Andreev

2003-01-01

19

Four index transportation problem: principle, resolution and application in industry  

Microsoft Academic Search

Due to the importance of freight transport in the panel of the logistics cost, our research is conducted to optimize transportation on cost criterion. Its aim is to find a solution on the minimum transportation cost for the four index transportation problem (4ITP). This linear programming problem may be degenerated and it may not verify the solution existence condition (SEC).

M. Gourgand; T. H. Pham; A. Tanguy

2011-01-01

20

Truth Maintenance  

Microsoft Academic Search

General purpose truth maintenance systems have receivedconsiderable attention in the past few years. Thispaper discusses the functionality of truth maintenancesystems and compares various existing algorithms. Applicationsand directions for future research are also discussed.IntroductionIn 1978 Jon Doyle wrote a masters thesis at the MIT AILaboratory entitled "Truth Maintenance Systems forProblem Solving" [ Doyle, 1979 ] . In this thesis Doyledescribed an

David A. Mcallester

1990-01-01

21

RESOLUTION AND STABILITY ANALYSIS OF AN INVERSE PROBLEM IN ELECTRICAL IMPEDANCE TOMOGRAPHY  

E-print Network

RESOLUTION AND STABILITY ANALYSIS OF AN INVERSE PROBLEM IN ELECTRICAL IMPEDANCE TOMOGRAPHY in numerical calculations. Key words. elliptic inverse problem, electrical impedance tomography, conductivity classifications. 35R30, 15A09, 65N99 1. Introduction. In electrical impedance tomography, the problem is to find

22

Maintenance Deferred.  

ERIC Educational Resources Information Center

Discusses how colleges and universities are scrambling to catch up on deferred maintenance before the backlog becomes overwhelming. The problems, and some solutions, for acquiring repair funding and collecting needs data are addressed. (GR)

Kennedy, Mike

2000-01-01

23

Baldwin's Two Developmental Resolutions of the Mind-Body Problem.  

ERIC Educational Resources Information Center

Pursues William Kessen's analysis of psychologist Baldwin's 1905 paper by examining Baldwin's two proposed solutions to the mind-body problem: the materialist solution and the idealist solution. Demonstrates that Baldwin's ideas presaged those of developmental theorists and philosophers. Discusses Baldwin's proposal that current scientific ideas…

Ferrari, Michel

2003-01-01

24

A resolution of Stewartson's quarter-infinite plate problem  

NASA Astrophysics Data System (ADS)

We revisit a problem originally considered by Stewartson in 1961: the incompressible, high-Reynolds-number flow past a quarter-infinite plate, with a leading edge that is perpendicular to, and a side edge that is parallel to, an undisturbed oncoming freestream. Particular emphasis is placed on the key region close to the side edge, where the flow is (superficially) three-dimensional, although the use of similarity variables reduces the dimensionality of the problem down to two. As noted by Stewartson, this problem has several intriguing features; it includes singularities and is also of a mixed parabolic type, with edge conditions influencing the solution in both directions across the flow domain. These features serve to greatly complicate the (numerical) solution process (the problem is of course also highly non-linear), and computation was clearly infeasible in 1961. In the present paper, a detailed computational study is presented, answering many of the questions that arose from the 1961 study. We present detailed numerical results together with asymptotic analyses of the key locations in the flow.

Duck, P. W.; Hewitt, R. E.

2012-01-01

25

Towards the resolution of the solar neutrino problem  

SciTech Connect

A number of experiments have accumulated over the years a large amount of solar neutrino data. The data indicate that the observed solar neutrino flux is significantly smaller than expected and, furthermore, that the electron neutrino survival probability is energy dependent. This ''solar neutrino problem'' is best solved by assuming that the electron neutrino oscillates into another neutrino species. Even though one can classify the solar neutrino deficit as strong evidence for neutrino oscillations, it is not yet considered a definitive proof. Traditional objections are that the evidence for solar neutrino oscillations relies on a combination of hard, different experiments, and that the Standard Solar Model (SSM) might not be accurate enough to precisely predict the fluxes of different solar neutrino components. Even though it seems unlikely that modifications to the SSM alone can explain the current solar neutrino data, one still cannot completely discount the possibility that a combination of unknown systematic errors in some of the experiments and certain modifications to the SSM could conspire to yield the observed data. To conclusively demonstrate that there is indeed new physics in solar neutrinos, new experiments are aiming at detecting ''smoking gun'' signatures of neutrino oscillations, such as an anomalous seasonal variation in the observed neutrino flux or a day-night variation due to the regeneration of electron neutrinos in the Earth. In this dissertation we study the sensitivity reach of two upcoming neutrino experiments, Borexino and KamLAND, to both of these effects. Results of neutrino oscillation experiments for the case of two-flavor oscillations have always been presented on the (sin{sup 2} 2{theta}, {Delta}m{sup 2}) parameter space. We point out, however, that this parameterization misses the half of the parameter space {pi}/4 < {theta} {le} {pi}/2, which is physically inequivalent to the region 0 {le} {theta} {le} {pi}/4 in the presence of matter effects. The MSW solutions to the solar neutrino problem can extend to the ({theta} > {pi}/4) side. Furthermore, even the ''vacuum oscillation'' solutions are affected by solar matter effects and hence are different in the two sides.

Friedland, Alexander

2000-08-29

26

A High-Resolution Hybrid Compact-ENO Scheme for Shock-Turbulence Interaction Problems  

Microsoft Academic Search

A class of upwind-biased finite-difference schemes with a compact stencil is proposed in general form, suitable for the time-accurate direct numerical simulation of fluid-convection problems. These schemes give uniformly high approximation order and allow for a spectral-like wave resolution while dissipating non-resolved wavenumbers. When coupled with an essentially non-oscillatory scheme near discontinuities, the compact schemes become shock-capturing and their resolution

N. A. Adams; K. Shariff

1996-01-01

27

A High-Resolution Hybrid Compact-ENO Scheme for Shock-Turbulence Interaction Problems  

NASA Astrophysics Data System (ADS)

A class of upwind-biased finite-difference schemes with a compact stencil is proposed in general form, suitable for the time-accurate direct numerical simulation of fluid-convection problems. These schemes give uniformly high approximation order and allow for a spectral-like wave resolution while dissipating non-resolved wavenumbers. When coupled with an essentially non-oscillatory scheme near discontinuities, the compact schemes become shock-capturing and their resolution properties are preserved. The derivation of the compact schemes is discussed in detail. Their convergence and resolution properties as well as numerical stability are analyzed. Upwinding and coupling procedures are described. Application examples for typical non-linear wave interaction problems are given.

Adams, N. A.; Shariff, K.

1996-08-01

28

A high-resolution hybrid compact-ENO scheme for shock-turbulence interaction problems  

SciTech Connect

A class of upwind-biased finite-difference schemes with a compact stencil is proposed in general form, suitable for the time-accurate direct numerical simulation of fluid-convection problems. These schemes give uniformly high approximation order and allow for a spectral-like wave resolution while dissipating non-resolved wavenumbers. When coupled with an essentially non-oscillatory scheme near discontinuities, the compact schemes become shock-capturing and their resolution properties are preserved. The derivation of the compact schemes is discussed in detail. Their convergence and resolution properties as well as numerical stability are analyzed. Upwinding and coupling procedures are described. Application examples for typical non-linear wave interaction problems are given. 50 refs., 17 figs., 7 tabs.

Adams, N.A.; Shariff, K. [NASA Ames Research Center, Moffett Field, CA (United States)] [NASA Ames Research Center, Moffett Field, CA (United States)

1996-08-01

29

Combined Multipath and Spatial Resolution for Multiuser Detection: Potentials and Problems  

E-print Network

Combined Multipath and Spatial Resolution for Multiuser Detection: Potentials and Problems Howard C and temporal (RAKE-type) combin- ing have been shown [l]to provide near-far resistant solutions which of us- ing spatial combining in conjunction with multiuser detection and temporal combining

Verdú, Sergio

30

Joint application of AI techniques, PRA and disturbance analysis methodology to problems in the maintenance and design of nuclear power plants  

SciTech Connect

This final report summarizes the accomplishments of a two year research project entitled Joint Application of Artificial Intelligence Techniques, Probabilistic Risk Analysis, and Disturbance Analysis Methodology to Problems in the Maintenance and Design of Nuclear Power Plants. The objective of this project is to develop and apply appropriate combinations of techniques from artificial intelligence, (AI), reliability and risk analysis and disturbance analysis to well-defined programmatic problems of nuclear power plants. Reactor operations issues were added to those of design and maintenance as the project progressed.

Okrent, D.

1989-03-01

31

Joint application of AI techniques, PRA and disturbance analysis methodology to problems in the maintenance and design of nuclear power plants. Final report  

SciTech Connect

This final report summarizes the accomplishments of a two year research project entitled ``Joint Application of Artificial Intelligence Techniques, Probabilistic Risk Analysis, and Disturbance Analysis Methodology to Problems in the Maintenance and Design of Nuclear Power Plants. The objective of this project is to develop and apply appropriate combinations of techniques from artificial intelligence, (AI), reliability and risk analysis and disturbance analysis to well-defined programmatic problems of nuclear power plants. Reactor operations issues were added to those of design and maintenance as the project progressed.

Okrent, D.

1989-03-01

32

Predicting natural resolution of alcohol-related problems: a prospective behavioral economic analysis.  

PubMed

This study investigated whether the relative allocation of discretionary monetary expenditures to alcoholic beverages versus savings (presumed to reflect relative preferences for immediate vs. delayed rewards) before quitting abusive drinking predicted natural resolution among untreated problem drinkers. Drinking, life events, income, and expenditures were assessed for the year before resolution and again 1 and 2 years later (N = 50). Compared with those who relapsed, participants who remained resolved at 2 years reported proportionally more pre-resolution discretionary expenditures on savings and less on alcohol. Income and expenditures were similar across groups. The findings support the predictive utility of this functional index of relative reward preferences that operate over variable time horizons and suggest that temporal discounting is an important process in addictive behavior change. PMID:12233985

Tucker, Jalie A; Vuchinich, Rudy E; Rippens, Paula D

2002-08-01

33

High Order And High Resolution Methods For a Model CAA Problem  

NASA Technical Reports Server (NTRS)

The initial value problem for the first order linear wave equation in one space dimension is treated for two cases with specified initial data and grid, and data from solutions at t = 400 and t = 800 are presented, as prescribed for Problem 1 in Category 1. Results are shown from computations with a sequence of recently developed high order and high resolution methods which combine Hermite interpolation, Cauchy-Kowaleskya recursion for time derivatives, and Taylor series time advancement. These methods have the same order of accuracy in time as in space. Results are shown from methods that range from third to nineteenth order. The stated problems with the prescribed coarse grid can be simulated with errors that are at the level of machine accuracy if the method is sufficiently high order. In addition, the growth of the maximum absolute error out to t = 100,000 is given for simulations with the stated problem data.

Goodrich, John W.

2004-01-01

34

Reliability Analysis and Optimal Release Problem Considering Maintenance Time of Software Components for an Embedded OSS Porting Phase  

NASA Astrophysics Data System (ADS)

OSS (open source software) systems which serve as key components of critical infrastructures in our social life are still ever-expanding now. Especially, embedded OSS systems have been gaining a lot of attention in the embedded system area, i.e., Android, BusyBox, TRON, etc. However, the poor handling of quality problem and customer support prohibit the progress of embedded OSS. Also, it is difficult for developers to assess the reliability and portability of embedded OSS on a single-board computer. In this paper, we propose a method of software reliability assessment based on flexible hazard rates for the embedded OSS. Also, we analyze actual data of software failure-occurrence time-intervals to show numerical examples of software reliability assessment for the embedded OSS. Moreover, we compare the proposed hazard rate model for the embedded OSS with the typical conventional hazard rate models by using the comparison criteria of goodness-of-fit. Furthermore, we discuss the optimal software release problem for the porting-phase based on the total expected software maintenance cost.

Tamura, Yoshinobu; Yamada, Shigeru

35

Divergence identities in curved space-time a resolution of the stress-energy problem  

Microsoft Academic Search

It is noted that the joint use of two basic differential identities in curved space-time, namely, 1) the Einstein-Hilbert identity (1915), and 2) the identity of P. Freud (1939), permits a viable alternative to general relativity and a resolution of the ``field stress-energy'' problem of the gravitational theory. (A tribute to Eugene P. Wigner's 1957 presidential address to the APS)

Hüseyin Yilmaz

1989-01-01

36

Postmodern Strategies for Working with Resistance: Problem Resolution or Self-Revolution?  

Microsoft Academic Search

Theoretical conceptualizations of resistance to change and working strategies to address resistance are reviewed within six contemporary postmodern psychotherapies: relational psychoanalytic therapy, personal construct psychotherapy, process-experiential psychotherapy, depth-oriented brief therapy, narrative therapy, and motivational interviewing. These therapies are positioned along a continuum spanning self-revolution and problem resolution strategies for treating resistance. The article reviews empirical findings on treatments for resistance

Ze'ev Frankel; Heidi M. Levitt

2006-01-01

37

Cryogenics maintenance strategy  

NASA Astrophysics Data System (ADS)

ALMA is an interferometer composed of 66 independent systems, with specific maintenance requirements for each subsystem. To optimize the observation time and reduce downtime maintenance, requirements are very demanding. One subsystem with high maintenance efforts is cryogenics and vacuum. To organize the maintenance, the Cryogenic and Vacuum department is using and implementing different tools. These are monitoring and problem reporting systems and CMMS. This leads to different maintenance approaches: Preventive Maintenance, Corrective Maintenance and Condition Based Maintenance. In order to coordinate activities with other departments the preventive maintenance schedule is kept as flexible as systems allow. To cope with unavoidable failures, the team has to be prepared to work under any condition with the spares on time. Computerized maintenance management system (CMMS) will help to manage inventory control for reliable spare part handling, the correct record of work orders and traceability of maintenance activities. For an optimized approach the department is currently evaluating where preventive or condition based maintenance applies to comply with the individual system demand. Considering the change from maintenance contracts to in-house maintenance will help to minimize costs and increase availability of parts. Due to increased number of system and tasks the cryo team needs to grow. Training of all staff members is mandatory, in depth knowledge must be built up by doing complex maintenance activities in the Cryo group, use of advanced computerized metrology systems.

Cruzat, Fabiola

2012-09-01

38

Problems and process of identity maintenance in the anti-nuclear movement in America: a qualitative analysis  

SciTech Connect

These strategic and tactical problems are examined within two basic areas of concern: (1) external public relations and (2) internal membership identify. This study contributes to the resource-mobilization perspective by theoretically reducing the significant variables of concern to external and internal identity maintenance and by stressing the constant dilemma between the structure of the movement and the actual process by which this structure is carried out. It is based on a social psychological analysis in which the dynamics of social movements is viewed both externally and internally in relation to the movement structure and process. The Sunbelt Alliance anti-nuclear group of Oklahoma is used as the empirical example. The research methodology consists of a series of focused personal interviews. The Sunbelt Alliance anti-nuclear organization experienced a dilemma resulting from the tension between external and internal contingencies. The promotion of cooperative interdependence based on member cohesiveness within the group suffered because of the inability of the organization to maintain consistent agreement concerning external targets. The structure of the group, or its goals and ideology, was not consistently reflected in its process. Disagreement over external priorities eventually reduced internal solidarity, and the organization dissolved.

Tate, D.D.

1982-01-01

39

Multiple-resolution divide and conquer neural networks for large-scale TSP-like energy minimization problems  

Microsoft Academic Search

We describe a multiple-resolution divide-and-conquer ANN approach for large-scale constrained optimization problems like the TSP. The goal of the approach is to divide a problem into sub-problems, solve them with parallel ANNs, then combine the resulting sub-solutions. The divide-and-conquer approach is based on a mathematical principle of orthogonal division errors, which provides the criteria for optimal problem division. The resulting

Steven Noel; Harold Szu

1997-01-01

40

Sumoylation and the Structural Maintenance of Chromosomes (Smc) 5/6 Complex Slow Senescence through Recombination Intermediate Resolution*  

PubMed Central

Telomeres are repetitive nucleoprotein structures that cap the ends of chromosomes. Without telomerase, telomeres shorten with replication and eventually signal cell cycle arrest (cell senescence). Homologous recombination (HR)-based mechanisms slow senescence, and distinct HR mechanisms support the growth of the rare survivors of senescence. Here, we report novel roles for the post-translational modification of small ubiquitin-like modifier (SUMO) in regulating the rate of senescence in Saccharomyces cerevisiae telomerase mutants. We identify Mms21 as the relevant SUMO E3 ligase and demonstrate that cells lacking Mms21-dependent sumoylation accumulate HR intermediates selectively at telomeres during senescence. One target of Mms21-dependent sumoylation is the cohesin- and condensin-related Smc5-Smc6 complex (Smc5/6). We show that hypomorphic smc5 or smc6 alleles exhibit phenotypes similar to mms21 sumoylation-deficient mutants with regard to senescence and the accumulation of unresolved HR intermediates. Further, we provide evidence that Mms21 and Smc5/6 prevent aberrant recombination between sister telomeres and also globally facilitate resolution of sister chromatid HR intermediates. PMID:20159973

Chavez, Alejandro; George, Vanessa; Agrawal, Vishesh; Johnson, F. Brad

2010-01-01

41

Common ``unique'' cavity wall flashing problems: Mistakes frequently made, their resolution, and presentations from case histories  

SciTech Connect

Building design drawings for masonry cavity wall construction generally attempt to contain most of the information needed to instruct the construction team on the types and placement of wall flashings. Some unique, low frequency conditions are often not described in detail in the drawings, and reliance is placed on the contractors to detail and install these unique flashing areas for watertight performance, using the concepts shown in the drawings for other areas. Frequently the resulting installation does not perform well, and leakage and disputes result. Sometimes subcontractor trades do not realize or anticipate how their work interfaces with another trade. Masonry flashings that are possibly installed in a water-tight and well-performing manner can be damaged by other trades who do not realize the damage being caused, and the resulting combination leaks. One example is the manner in which window heads are sometimes anchored or fastened to the underside of steel shelf angles which support brick masonry veneer above. This paper will discuss several examples of common leakage problems in masonry cavity wall construction, attributed to the above two concepts. The resolution of the problems, performed in recent case histories, will be presented, with suggestions for changes in original design drawings to help prevent the problems.

Wilson, M.D.

1999-07-01

42

Regular methods of solution of ill-posed problems for remote sensing of Earth atmosphere using high-resolution spectrometry  

Microsoft Academic Search

General regular methods of solution of ill-posed inverse problems and their application to geophysical sounding of Earth interior were developing during long time at Institute of Mathematics and Mechanics of Ural Branch of RAS. In this paper we apply the developed regular methods of solution of the inverse problems for retrieval of vertical temperature profiles from high-resolution thermal emission spectra

V. V. Vasin; K. G. Gribanov; V. I. Zakharov; E. N. Akimova; G. Ya. Perestoronina; L. Yu. Timerkhanova

2006-01-01

43

Minisuperspace model of Machian Resolution of Problem of Time. I. Isotropic Case  

E-print Network

A local resolution to the Problem of Time that is Machian and was previously demonstrated for various relational mechanics models is here shown to work for a more widely studied quantum cosmological model. Namely, closed isotropic minisuperspace GR with minimally-coupled scalar field matter. This uses work firstly along the lines of Barbour's at the classical level. Secondly, it uses a Machianized version of the Semiclassical Approach to Quantum Cosmology. Finally, it uses a combined Machianized version of a combined Semiclassical Histories Timeless Records scheme along the lines of Halliwell's work. This program's goal is the treatment of inhomogeneous perturbations about the present paper's model, drawing also qualitatively from the relational mechanics examples since these have nontrivial notions of inhomogeneity/structure (clumping) as well as nontrivial linear constraints.

Edward Anderson

2014-02-22

44

Heavy Ion Beam in Resolution of the Critical Point Problem for Uranium and Uranium Dioxide  

E-print Network

Important advantages of heavy ion beam (HIB) irradiation of matter are discussed in comparison with traditional sources - laser heating, electron beam, electrical discharge etc. High penetration length (~ 10 mm) is of primary importance for investigation of dense matter properties. This gives an extraordinary chance to reach the uniform heating regime when HIB irradiation is being used for thermophysical property measurements. Advantages of HIB heating of highly-dispersive samples are claimed for providing free and relatively slow quasi-isobaric heating without fast hydrodynamic expansion of heated sample. Perspective of such HIB application are revised for resolution of long-time thermophysical problems for uranium and uranium-bearing compounds (UO2). The priorities in such HIB development are stressed: preferable energy levels, beam-time duration, beam focusing, deposition of the sample etc.

Igor Iosilevskiy; Victor Gryaznov

2010-05-23

45

The Effects of Dissipation and Coarse Grid Resolution for Multigrid in Flow Problems  

NASA Technical Reports Server (NTRS)

The objective of this paper is to investigate the effects of the numerical dissipation and the resolution of the solution on coarser grids for multigrid with the Euler equation approximations. The convergence is accomplished by multi-stage explicit time-stepping to steady state accelerated by FAS multigrid. A theoretical investigation is carried out for linear hyperbolic equations in one and two dimensions. The spectra reveals that for stability and hence robustness of spatial discretizations with a small amount of numerical dissipation the grid transfer operators have to be accurate enough and the smoother of low temporal accuracy. Numerical results give grid independent convergence in one dimension. For two-dimensional problems with a small amount of numerical dissipation, however, only a few grid levels contribute to an increased speed of convergence. This is explained by the small numerical dissipation leading to dispersion. Increasing the mesh density and hence making the problem over resolved increases the number of mesh levels contributing to an increased speed of convergence. If the steady state equations are elliptic, all grid levels contribute to the convergence regardless of the mesh density.

Eliasson, Peter; Engquist, Bjoern

1996-01-01

46

GUIDELINES FOR IMPLEMENTATION OF AN ADVANCED OUTAGE CONTROL CENTER TO IMPROVE OUTAGE COORDINATION, PROBLEM RESOLUTION, AND OUTAGE RISK MANAGEMENT  

SciTech Connect

This research effort is a part of the Light-Water Reactor Sustainability (LWRS) Program, which is a research and development (R&D) program sponsored by Department of Energy (DOE) and performed in close collaboration with industry R&D programs that provide the technical foundations for licensing and managing the long-term, safe, and economical operation of current nuclear power plants. The LWRS program serves to help the U.S. nuclear industry adopt new technologies and engineering solutions that facilitate the continued safe operation of the plants and extension of the current operating licenses. Managing NPP outages is a complex and difficult task due to the large number of maintenance and repair activities that are accomplished in a short period of time. During an outage, the outage control center (OCC) is the temporary command center for outage managers and provides several critical functions for the successful execution of the outage schedule. Essentially, the OCC functions to facilitate information inflow, assist outage management in processing information, and to facilitate the dissemination of information to stakeholders. Currently, outage management activities primarily rely on telephone communication, face to face reports of status, and periodic briefings in the OCC. It is a difficult task to maintain current the information related to outage progress and discovered conditions. Several advanced communication and collaboration technologies have shown promise for facilitating the information flow into, across, and out of the OCC. The use of these technologies will allow information to be shared electronically, providing greater amounts of real-time information to the decision makers and allowing OCC coordinators to meet with supporting staff remotely. Passively monitoring status electronically through advances in the areas of mobile worker technologies, computer-based procedures, and automated work packages will reduce the current reliance on manually reporting progress. The use of these technologies will also improve the knowledge capture and management capabilities of the organization. The purpose of this research is to improve management of NPP outages through the development of an advanced outage control center (AOCC) that is specifically designed to maximize the usefulness of communication and collaboration technologies for outage coordination and problem resolution activities. This technical report for industry implementation outlines methods and considerations for the establishment of an AOCC. This report provides a process for implementation of a change management plan, evaluation of current outage processes, the selection of technology, and guidance for the implementation of the selected technology. Methods are presented for both adoption of technologies within an existing OCC and for a complete OCC replacement, including human factors considerations for OCC design and setup.

Germain, Shawn St; Farris, Ronald; Whaley, April M; Medema, Heather; Gertman, David

2014-09-01

47

Study on Intelligent Expressway Maintenance System  

Microsoft Academic Search

Expressway maintenance is very important for the well operation of expressway which is an essential part of national infrastructure. But traditional methods could not meet the requirements of maintenance management of fast developed expressway. Intelligent expressway maintenance system (IEMS) is a new way to solve the problem of expressway maintenance. Firstly, characters of expressway maintenance work are pointed out to

Tao Han; Congdong Li

2008-01-01

48

General Relativity without paradigm of space-time covariance, and resolution of the problem of time  

E-print Network

The framework of a theory of gravity from the quantum to the classical regime is presented. The paradigm shift from full spacetime covariance to spatial diffeomorphism invariance, together with clean decomposition of the canonical structure, yield transparent physical dynamics and a resolution of the problem of time. The deep divide between quantum mechanics and conventional canonical formulations of quantum gravity is overcome with a Schr\\"{o}dinger equation for quantum geometrodynamics that describes evolution in intrinsic time. Unitary time development with gauge-invariant temporal ordering is also viable. All Kuchar observables become physical; and classical spacetime, with direct correlation between its proper times and intrinsic time intervals, emerges from constructive interference. The framework not only yields a physical Hamiltonian for Einstein's theory, but also prompts natural extensions and improvements towards a well behaved quantum theory of gravity. It is a consistent canonical scheme to discuss Horava-Lifshitz theories with intrinsic time evolution, and of the many possible alternatives that respect 3-covariance (rather than the more restrictive 4-covariance of Einstein's theory), Horava's ``detailed balance" form of the Hamiltonian constraint is essentially pinned down by this framework.

Chopin Soo; Hoi-Lai Yu

2014-02-07

49

Substation Reliability Centered Maintenance  

SciTech Connect

Substation Reliability Centered Maintenance (RCM) is a technique that is used to develop maintenance plans and criteria so the operational capability of substation equipment is achieved, restored, or maintained. The objective of the RCM process is to focus attention on system equipment in a manner that leads to the formulation of an optimal maintenance plan. The RCM concept originated in the airline industry in the 1970s and has been used since 1985 to establish maintenance requirements for nuclear power plants. The RCM process is initially applied during the design and development phase of equipment or systems on the premise that reliability is a design characteristic. It is then reapplied, as necessary, during the operational phase to sustain a more optimal maintenance program based on actual field experiences. The purpose of the RCM process is to develop a maintenance program that provides desired or specified levels of operational safety and reliability at the lowest possible overall cost. The objectives are to predict or detect and correct incipient failures before they occur or before they develop into major defects, reduce the probability of failure, detect hidden problems, and improve the cost-effectiveness of the maintenance program. RCM accomplishes two basic purposes: (1) It identifies in real-time incipient equipment problems, averting potentially expensive catastrophic failures by communicating potential problems to appropriate system operators and maintenance personnel. (2) It provides decision support by recommending, identifying, and scheduling preventive maintenance. Recommendations are based on maintenance criteria, maintenance history, experience with similar equipment, real-time field data, and resource constraints. Hardware and software are used to accomplish these two purposes. The RCM system includes instrumentation that monitors critical substation equipment as well as computer software that helps analyze equipment data.

Purucker, S.L.

1992-11-01

50

Resolution of a WDM network design problem using a decomposition approach and a size reduction method  

Microsoft Academic Search

Multicommodity flow models have been proposed in the literature to formulate different network design problems as mixed integer linear programming (MILP) problems. The formulations axe important because there are algorithms that find the optimal solution to these problems. However, MILP problems are NP-hard, which makes the solution of design problem instances of non trivial size numerically intractable. In this article

Josue KURI; Nicolas PUECH; Maurice GAGNAIRE

2002-01-01

51

General aviation avionics equipment maintenance  

NASA Technical Reports Server (NTRS)

Maintenance of general aviation avionics equipment was investigated with emphasis on single engine and light twin engine general aviation aircraft. Factors considered include the regulatory agencies, avionics manufacturers, avionics repair stations, the statistical character of the general aviation community, and owners and operators. The maintenance, environment, and performance, repair costs, and reliability of avionics were defined. It is concluded that a significant economic stratification is reflected in the maintenance problems encountered, that careful attention to installations and use practices can have a very positive impact on maintenance problems, and that new technologies and a general growth in general aviation will impact maintenance.

Parker, C. D.; Tommerdahl, J. B.

1978-01-01

52

Estimating the model resolution matrix for large seismic tomography problems based on Lanczos bidiagonalization with partial reorthogonalization  

NASA Astrophysics Data System (ADS)

The PROPACK package developed by Larsen is able to efficiently and accurately estimate singular values and vectors for large matrices based on the Lanczos bidiagonalization with partial reorthogonalization. We incorporate the Pavtial Reorthogonalization Package (PROPACK) package into the double-difference seismic tomography code tomoDD and estimate the model resolution matrix for large seismic tomography problems. Compared to previous Least Squares QR (LSQR)-based methods for estimating the model resolution matrix the PROPACK-based method calculates the full resolution matrix and thus gives a complete description of how well the model is resolved. Several observations are drawn from the application to data from the 2001 eruption of Mt Etna: for this example, it is reasonable to use ray-sampling density information to characterize the model resolution qualitatively; the model resolution resulting from just velocity inversion bears a close linear relationship to that from simultaneous inversion but always overestimates resolution; and the inversion system using differential times has a greater ability to resolve the source region structure than the system using absolute times.

Zhang, H.; Thurber, C. H.

2007-07-01

53

The Effect of Conflict Resolution Training on Children’s Behavioral Problems in Shiraz, Southern Iran: A Randomized Controlled Trial  

PubMed Central

Background: There is evidence that marital problems can contribute to child behavior problems. In fact, the way that parents solve their conflicts, such as aggression, physical violence, and poor communication skills, can eventually culminate in aggression and emotional problems in children. This study aimed to evaluate the effectiveness of conflict resolution training on children’s behavioral problems in a sample of Iranian couples. Methods: This randomized controlled trial study was carried out on the couples who referred to counseling centers in Shiraz, Iran. In this study, 56 couples were selected through convenience sampling and assigned to an intervention and a control group. The intervention group received 10 sessions of communication skills training. All the participants filled out conflict resolution questionnaire and Child Behavior Problem Checklist (CBCL). To analyze the data we used the SPSS statistical software (version 16), using repeated measurement test, paired t-test, and independent t test. Results: In this study, no statistically significant differences were found between the two groups regarding the demographic characteristics. Also, no significant difference was observed between the two groups regarding the mean score of child behavior problems. Besides, a significant difference was found in the intervention group’s mean score of marital conflict in post-test compared to the pre-test; however, no such trend was observed in the control group. Conclusion: Conflict resolution skill training was effective in reducing marital conflict. Also, it showed a slight reduction in the score of child behavior problems after the intervention. But this reduction wasn’t statisticaly significant. Trial Registration Number: IRCT201109112812N2 PMID:25349861

Soleimani, Sara; Sharif, Farkhondeh; Mani, Arash; Keshavarzi, Sareh

2014-01-01

54

Extended Subject Access to Hypertext Online Documentation. Parts I and II: The Search-Support and Maintenance Problems.  

ERIC Educational Resources Information Center

Describes enhancements made to a hypertext information retrieval system at the National Energy Research Supercomputer Center (NERSC) called DFT (Document, Find, and Theseus). The enrichment of DFT's entry vocabulary is described, DFT and other hypertext systems are compared, and problems that occur due to the need for frequent updates are…

Girill, T. R.; And Others

1991-01-01

55

Remote Maintenance Monitoring  

NASA Technical Reports Server (NTRS)

Automated system gives new life to aging network of computers. Remote maintenance monitoring system developed to diagnose problems in large distributed computer network. Consists of data links, displays, controls, software, and more than 200 computers. Uses sensors to collect data on failures and expert system to examine data, diagnose causes of failures, and recommend cures. Designed to be retrofitted into launch processing system at Kennedy Space Center. Reduces downtime, lowers workload and expense of maintenance, and makes network less dependent on human expertise.

Owens, Richard C.; Simkins, Lorenz; Rochette, Donn

1990-01-01

56

Algorithms and hardness results for the jump number problem, the joint replenishment problem, and the optimal clustering of frequency-constrained maintenance jobs  

E-print Network

In the first part of this thesis we present a new, geometric interpretation of the jump number problem on 2-dimensional 2-colorable (2D2C) partial order. We show that the jump number of a 2D2C poset is equivalent to the ...

Telha Cornejo, Claudio (Claudio A.)

2012-01-01

57

Resolution of the general T-coloring problem using an MBO based algorithm  

Microsoft Academic Search

om Abstract. A generalization of the classical graph coloring model is studied in this paper. The problem we are interested in is the T -coloring problem related in the literature. It consists on coloring the vertices of a graph in such a way that the two colors assigned to two adjacent vertices i and j does not appear in Tij,

Nouioua Leila; Bessedik Malika

2011-01-01

58

Application of CFD analysis to design support and problem resolution for ASRM and RSRM  

Microsoft Academic Search

The use of Navier-Stokes CFD codes to predict the internal flow field environment in a solid rocket motor is a very important analysis element during the design phase of a motor development program. These computational flow field solutions uncover a variety of potential problems associated with motor performance as well as suggesting solutions to these problems. CFD codes have also

Richard A. Dill; R. Harold Whitesides

1993-01-01

59

Interval Newton\\/Generalized Bisection in the resolution of Electrical Power Load Flow Problem  

Microsoft Academic Search

This paper presents an interval approach to a class ic electrical engineering paradigm: the Power Load Flow problem. The solution to this problem is fundamental to any behavior and sensibility analysi s of electrical power transmission systems, as a consequence of network p arameters alteration due to different causes. This classical nonlinear syste m of equations with several practical restrictions

Eustaquio A. Martínez; Tiaraju Asmuz Diverio; Benjamín Barán; Centro Nacional de Computación

60

Maintenance Downtime  

Atmospheric Science Data Center

... will be unavailable March 5, 2013 8:00 am to 5:00 pm due to database maintenance. Date(s):  Tuesday, March 5, 2013 ... will be unavailable March 5, 2013 8:00 am to 5:00 pm due to database maintenance. ...

2013-07-10

61

Maintenance Budgeting.  

ERIC Educational Resources Information Center

Three methods for the preparation of maintenance budgets are discussed--(1) a traditional method, inconclusive and obsolete, based on gross square footage, (2) the formula approach method based on building classification (wood-frame, masonry-wood, masonry-concrete) with maintenance cost factors for each type plus custodial service rates by type of…

Smith, J. McCree

62

Resolution Analysis and the Backus-Gilbert Local Estimator for the Inverse Problem in the Scanning Magnetometory  

NASA Astrophysics Data System (ADS)

The scanning magnetometory reveals fine-scale magnetic field images over geological samples, offering unique paleomagnetic information. Recent scanning magnetometory reaches high moment sensitivity and high spatial resolution (less than 1 mm), owing to the high field-sensitivity sensors (e.g., SQUID, Magneto-Impedance (MI), Giant-Magneto-Resistance) and small sample-to-sensor distance. Using an MI sensor driven by low-noise circuit, we successfully obtained magnetic field images of thin-sectioned geological samples carrying natural remanent magnetization. The main challenge in the scanning magnetometory is to invert the obtained field data into a magnetization pattern (Weiss et al., 2007). Since the magnetization pattern is a continuous function of position, the magnetic inverse problem is essentially underdetermined. Consequently, there should always be limitations in the resolving power of the estimated magnetization. Assessing the resolving power is essential to properly interpret the solution of inverse problems. Nevertheless, this has not been done for the scanning magnetometory. In this study, we used the model-resolution to assess the problem. We developed software to calculate and visualize the model-resolution for a single target point using the Backus-Gilbert method and iterative least-square calculation. Examples using results obtained by our MI scanning magnetometer will be presented. Any solution to a linear inverse problem can be expressed as a linear combination of data. The corresponding combination of data kernel constructs an averaging kernel. Thus, any solution is a weighted average of the true magnetization pattern of the sample. In other words, the resolving power of the solution, or the model-resolution, can be assessed by drawing the averaging kernel. Since the scanning magnetometory measures 2-dimensional samples, the averaging kernel for single target point becomes 2-dimensioanl image. Preliminary calculation was performed on a field image of 3.2 cm x 3.2 cm containing a basaltic section of 1cm x 1cm which was measured under 500 ?m grid and 500 ?m sample-to-sensor distance. The target point for which magnetization was estimated was arbitrary determined. The Backus-Gilbert method resulted in an averaging kernel with single pronounced peak with half-width of approximately 1 mm. In contrast, the model-resolution for a least-square solution revealed pronounced side lobe at ~5mm from the target point. We argue that when one want to make comparison between some petrologic features (e.g. mineral species) and magnetization pattern, the Backus-Gilbert method is easier to interpret because the averaging kernel is spatially concentrated. The main limitation of this analysis is that we had to determine the analyzing point before the inversion calculation.

Usui, Y.; Uehara, M.

2009-12-01

63

The nonlinear dynamics of family problem solving in adolescence: the predictive validity of a peaceful resolution attractor.  

PubMed

In this study we examined the videotaped family interactions of a community sample of adolescents and their parents. Youths were assessed in early to late adolescence on their levels of antisocial behavior. At age 16-17, youths and their parents were videotaped interacting while completing a variety of tasks, including family problem solving. The interactions were coded and compared for three developmental patterns of antisocial behavior: early onset, persistent; adolescence onset; and typically developing. The mean duration of conflict bouts was the only interaction pattern that discriminated the 3 groups. In the prediction of future antisocial behavior, parent and youth reports of transition entropy and conflict resolution interacted to account for antisocial behavior at age 18-19. Families with low entropy and peaceful resolutions predicted low levels of youth antisocial behavior at age 18-19. These findings suggest the need to study both attractors and repellers to understand family dynamics associated with health and social and emotional development. PMID:22695152

Dishion, Thomas J; Forgatch, Marion; Van Ryzin, Mark; Winter, Charlotte

2012-07-01

64

Management Team Analysis of Crop Production Systems: A Course in Problem Identification and Resolution.  

ERIC Educational Resources Information Center

Describes the organization of a crop production systems course for undergraduates in agriculture. Emphasis is placed on problem solving and student interaction and co-operation while working on grain farms and in the classroom. Samples of student evaluations of the course are included. (ML)

Schweitzer, L. E.

1986-01-01

65

Floors: Selection and Maintenance.  

ERIC Educational Resources Information Center

Flooring for institutional, commercial, and industrial use is described with regard to its selection, care, and maintenance. The following flooring and subflooring material categories are discussed--(1) resilient floor coverings, (2) carpeting, (3) masonry floors, (4) wood floors, and (5) "formed-in-place floors". The properties, problems,…

Berkeley, Bernard

66

Landscaping With Maintenance in Mind.  

ERIC Educational Resources Information Center

Examines school ground landscape design that enhances attractive of the school and provides for easier maintenance. Landscape design issues discussed include choice of grass, trees, and shrubs; irrigation; and safety and access. Other considerations for lessening maintenance problems for facility managers are also highlighted. (GR)

Sorensen, Randy

2000-01-01

67

Artificial Intelligence in Maintenance  

Microsoft Academic Search

Over the past two decades their has been substantial research and development in operations management including maintenance.\\u000a Kobbacy et al. (2007) argue that the continous research in these areas implies that solutions were not found to many problems. This was\\u000a attributed to the fact that many of the solutions proposed were for well-defined problems, that the solutions assumed accurate\\u000a data

Khairy A. H. Kobbacy

68

Resolution of complex esthetic problems in abnormal anterior teeth: a clinical report.  

PubMed

A conservative treatment is presented for a patient with complex severe esthetic problems related to the presence of anomalous teeth. The patient showed a rare occurrence of macrodontia of the maxillary right lateral incisor and microdontia of the maxillary left lateral incisor. The treatment plan was conservative to avoid tooth extraction, periodontal tissue trauma, and the risk of an unpredictable esthetic outcome. A multidisciplinary treatment involving orthodontic extrusion, endodontic therapy, periodontal therapy, and minimally invasive restorations was performed. A successful outcome was observed after a 2-year follow-up. PMID:24445025

Pegoraro, Luiz F; do Valle, Accácio L; Pegoraro, Thiago A; Corotti, Karyna M V; Vidotti, Hugo A

2014-08-01

69

Does consciousness really collapse the wave function? A possible objective biophysical resolution of the measurement problem  

E-print Network

An analysis has been performed of the theories and postulates advanced by von Neumann, London and Bauer, and Wigner, concerning the role that consciousness might play in the collapse of the wave function, which has become known as the measurement problem. This reveals that an error may have been made by them in the area of biology and its interface with quantum mechanics, when they called for the reduction of any superposition states in the brain through the mind or consciousness. Many years later Wigner changed his mind to reflect a simpler and more realistic objective position, expanded upon by Shimony, which appears to offer a way to resolve this issue. The argument is therefore made that the wave function of any superposed photon state or states is always objectively changed within the complex architecture of the eye in a continuous linear process initially for most of the superposed photons, followed by a discontinuous nonlinear collapse process later for any remaining superposed photons, thereby guaranteeing that only final, measured information is presented to the brain, mind or consciousness. An experiment to be conducted in the near future may enable us to simultaneously resolve the measurement problem and also determine if the linear nature of quantum mechanics is violated by the perceptual process.

Fred H. Thaheld

2005-09-06

70

The non-Boussinesq lock-exchange problem. Part 2. High-resolution simulations  

NASA Astrophysics Data System (ADS)

The present investigation explores the unsteady dynamics of large density contrast non-Boussinesq lock-exchange flows by means of high-resolution two-dimensional simulations of the incompressible variable-density Navier Stokes equations, employing a combination of spectral and compact finite-difference methods. For small density contrasts, the simulations closely reproduce earlier Boussinesq results for corresponding flows. Across the entire range of density contrasts, good agreement is obtained between the computed front propagation velocities and corresponding experimental observations reported in Part 1 of this investigation and by other authors. The simulations yield the required quantitative information with respect to the light and dense front heights, their propagation velocities, and the spatial structure of the dissipation fields in order to determine conclusively which of the scenarios developed in Part 1 is observed in reality. Simulations are conducted for fluids with the same kinematic viscosity, as well as for fluids with the same dynamic viscosity. For both slip and no-slip boundary conditions, and for all Re values, we find that for larger density contrasts, the dense front dissipates an increasing amount of energy. In contrast, the energy dissipated by the light front remains near its Boussinesq level for all values of the density ratio. In addition, for all density ratios, the height of the light front is very close to half the channel height, and it propagates with a non-dimensional velocity close to a half. This provides strong evidence that the dynamics of the light front is indeed approximated by the energy-conserving solution described in an earlier theoretical analysis. In contrast, the height of the dense front is substantially less than half the channel height. In addition, its velocity is close to the value derived in Part 1 for a dissipative gravity current. Together with the above results for the dissipation field, this confirms that the dense front behaves as a dissipative gravity current.

Birman, V. K.; Martin, J. E.; Meiburg, E.

2005-08-01

71

High-resolution coupled physics solvers for analysing fine-scale nuclear reactor design problems  

PubMed Central

An integrated multi-physics simulation capability for the design and analysis of current and future nuclear reactor models is being investigated, to tightly couple neutron transport and thermal-hydraulics physics under the SHARP framework. Over several years, high-fidelity, validated mono-physics solvers with proven scalability on petascale architectures have been developed independently. Based on a unified component-based architecture, these existing codes can be coupled with a mesh-data backplane and a flexible coupling-strategy-based driver suite to produce a viable tool for analysts. The goal of the SHARP framework is to perform fully resolved coupled physics analysis of a reactor on heterogeneous geometry, in order to reduce the overall numerical uncertainty while leveraging available computational resources. The coupling methodology and software interfaces of the framework are presented, along with verification studies on two representative fast sodium-cooled reactor demonstration problems to prove the usability of the SHARP framework. PMID:24982250

Mahadevan, Vijay S.; Merzari, Elia; Tautges, Timothy; Jain, Rajeev; Obabko, Aleksandr; Smith, Michael; Fischer, Paul

2014-01-01

72

The Mad Era: A Possible New Resolution to the Horizon, Flatness, and Monopole Problems  

E-print Network

A cosmology with a dynamical Planck mass $m_{pl}$ is shown to solve the horizon and monopole problems (and possibly flatness) if there is an early MAD (modified aging) era where the universe becomes older than in the standard model as a result of a large $m_{pl}$: the causality condition is $m_{pl}(T_c)/ m_{pl}(T_o) \\gta T_c/T_o$ ($T_c$ is some high temperature while $T_o = 2.74K$.) Unlike inflation, there is no period of vacuum domination nor any entropy violation. We study: a) bare scalar theories of gravity, b) self-interacting models, and c) bare theories with a phase transition in the matter sector.

Katherine Freese; Janna J Levin

1992-11-10

73

High-resolution coupled physics solvers for analysing fine-scale nuclear reactor design problems.  

PubMed

An integrated multi-physics simulation capability for the design and analysis of current and future nuclear reactor models is being investigated, to tightly couple neutron transport and thermal-hydraulics physics under the SHARP framework. Over several years, high-fidelity, validated mono-physics solvers with proven scalability on petascale architectures have been developed independently. Based on a unified component-based architecture, these existing codes can be coupled with a mesh-data backplane and a flexible coupling-strategy-based driver suite to produce a viable tool for analysts. The goal of the SHARP framework is to perform fully resolved coupled physics analysis of a reactor on heterogeneous geometry, in order to reduce the overall numerical uncertainty while leveraging available computational resources. The coupling methodology and software interfaces of the framework are presented, along with verification studies on two representative fast sodium-cooled reactor demonstration problems to prove the usability of the SHARP framework. PMID:24982250

Mahadevan, Vijay S; Merzari, Elia; Tautges, Timothy; Jain, Rajeev; Obabko, Aleksandr; Smith, Michael; Fischer, Paul

2014-08-01

74

Generalizing resolution  

NASA Astrophysics Data System (ADS)

Of those things that can be estimated well in an inverse problem, which is best to estimate? Backus-Gilbert resolution theory answers a version of this question for linear (or linearized) inverse problems in Hilbert spaces with additive zero-mean errors with known, finite covariance, and no constraints on the unknown other than the data. This paper generalizes resolution: it defines the resolution and Bayes resolution of an estimator, intrinsic minimax and Bayes resolution, and intrinsic minimax and Bayes design resolution. Intrinsic resolution is the smallest value of a penalty across parameters that can be estimated with controlled (minimax or Bayes) risk. Intrinsic minimax resolution includes Backus-Gilbert resolution and subtractive optimally localized averages (SOLA) as special cases. Intrinsic design resolution is the smallest value of a penalty among parameters that can be estimated with controlled (minimax or Bayes) risk using observations with controlled acquisition cost. Intrinsic resolution wraps the classical problem of choosing an optimal estimator of an abstract parameter inside the problem of choosing an optimal parameter to estimate. Intrinsic design resolution adds another layer: optimizing what to observe. Equivalently, it wraps a problem in information-based complexity inside the problem of choosing an optimal parameter. The definitions apply to inverse problems with constraints, to nonlinear inverse problems, to nonlinear and biased estimators and estimators with controlled computational cost, to general definitions of risk (not just the variance of unbiased estimators), to confidence set estimators as well as point estimators, and to abstract penalties not necessarily related to 'spread'. Simple examples are given, including a definition of the resolution of 'strict bounds' confidence intervals.

Stark, Philip B.

2008-06-01

75

Genetic variation and its maintenance  

SciTech Connect

This book contains several papers divided among three sections. The section titles are: Genetic Diversity--Its Dimensions; Genetic Diversity--Its Origin and Maintenance; and Genetic Diversity--Applications and Problems of Complex Characters.

Roberts, D.F.; De Stefano, G.F.

1986-01-01

76

Solutions of the Taylor-Green Vortex Problem Using High-Resolution Explicit Finite Difference Methods  

NASA Technical Reports Server (NTRS)

A computational fluid dynamics code that solves the compressible Navier-Stokes equations was applied to the Taylor-Green vortex problem to examine the code s ability to accurately simulate the vortex decay and subsequent turbulence. The code, WRLES (Wave Resolving Large-Eddy Simulation), uses explicit central-differencing to compute the spatial derivatives and explicit Low Dispersion Runge-Kutta methods for the temporal discretization. The flow was first studied and characterized using Bogey & Bailley s 13-point dispersion relation preserving (DRP) scheme. The kinetic energy dissipation rate, computed both directly and from the enstrophy field, vorticity contours, and the energy spectra are examined. Results are in excellent agreement with a reference solution obtained using a spectral method and provide insight into computations of turbulent flows. In addition the following studies were performed: a comparison of 4th-, 8th-, 12th- and DRP spatial differencing schemes, the effect of the solution filtering on the results, the effect of large-eddy simulation sub-grid scale models, and the effect of high-order discretization of the viscous terms.

DeBonis, James R.

2013-01-01

77

Analysis of resolution problems in ray-based traveltime tomography under regular station deployments like USArray  

NASA Astrophysics Data System (ADS)

Traveltime sensitivity kernels depend on how traveltimes are estimated; with the family of banana-doughnut kernels as well-known good approximations when frequencies are low, and rays when frequencies are very high. We extend previous analyses on small-scale problems to the case of large and dense arrays like Earth Scope/USArray. By combination of the multichannel deconvolution method (Jacobsen et al. 1999) and the distortion spectrum method (Jacobsen et al. 2008) we are able to pin down that very pattern in deep earth where efficient approximations (such as geometric rays) perform worst compared to modelling with more accurate sensitivity kernels. We call this special irregular slowness pattern "the Devil's checkerboard". In this way, we show that the ray approximation will tend to fail dramatically for fine scale structure still resolved by accurate sensitivity kernels, and we extend the analysis also to possible shortcomings of other kernel approximations like "fat rays" and summary rays. Jacobsen BH, Moller I, Jensen JM, and Efferso, F, 1999: Multichannel deconvolution, MCD, in geophysics and helioseismology. Phys. and Chem. of the Earth, Part A. 24, 215-220. Jacobsen, BH, Bondo, A, Weidle, C, Nielsen, L, Balling, N, 2008: Identification of adverse effects of wrong sensitivity kernels in 3D-tomographic inversion. Geophysical Research Abstracts, 10, EGU2008-A-05398

Jacobsen, B.; Sigloch, K.

2009-04-01

78

Nuclear maintenance: criteria for the '80s  

SciTech Connect

The broadening scope of maintenance problems being encountered at nuclear power plants is discussed. The capabilities of the nuclear maintenance and retrofit services industry to handle a broad, comprehensive range of total plant maintenance operations are discussed. This industry had proliferated to a multibillion dollar a year enterprise in which hundreds of firms of varying degrees of capability and expertise are now engaged.

Friedlander, G.D.

1984-05-01

79

Parent-Adolescent Conflict as Sequences of Reciprocal Negative Emotion: Links with Conflict Resolution and Adolescents' Behavior Problems.  

PubMed

Although conflict is a normative part of parent-adolescent relationships, conflicts that are long or highly negative are likely to be detrimental to these relationships and to youths' development. In the present article, sequential analyses of data from 138 parent-adolescent dyads (adolescents' mean age was 13.44, SD = 1.16; 52 % girls, 79 % non-Hispanic White) were used to define conflicts as reciprocal exchanges of negative emotion observed while parents and adolescents were discussing "hot," conflictual issues. Dynamic components of these exchanges, including who started the conflicts, who ended them, and how long they lasted, were identified. Mediation analyses revealed that a high proportion of conflicts ended by adolescents was associated with longer conflicts, which in turn predicted perceptions of the "hot" issue as unresolved and adolescent behavior problems. The findings illustrate advantages of using sequential analysis to identify patterns of interactions and, with some certainty, obtain an estimate of the contingent relationship between a pattern of behavior and child and parental outcomes. These interaction patterns are discussed in terms of the roles that parents and children play when in conflict with each other, and the processes through which these roles affect conflict resolution and adolescents' behavior problems. PMID:25358960

Moed, Anat; Gershoff, Elizabeth T; Eisenberg, Nancy; Hofer, Claire; Losoya, Sandra; Spinrad, Tracy L; Liew, Jeffrey

2014-10-31

80

Reinforcement Learning for Scheduling of Maintenance  

NASA Astrophysics Data System (ADS)

Improving maintenance scheduling has become an area of crucial importance in recent years. Condition-based maintenance (CBM) has started to move away from scheduled maintenance by providing an indication of the likelihood of failure. Improving the timing of maintenance based on this information to maintain high reliability without resorting to over-maintenance remains, however, a problem. In this paper we propose Reinforcement Learning (RL), to improve long term reward for a multistage decision based on feedback given either during or at the end of a sequence of actions, as a potential solution to this problem. Several indicative scenarios are presented and simulated experiments illustrate the performance of RL in this application.

Knowles, Michael; Baglee, David; Wermter, Stefan

81

Design and maintenance of a network for collecting high-resolution suspended-sediment data at remote locations on rivers, with examples from the Colorado River  

USGS Publications Warehouse

Management of sand and finer sediment in fluvial settings has become increasingly important for reasons ranging from endangered-species habitat to transport of sediment-associated contaminants. In all rivers, some fraction of the suspended load is transported as washload, and some as suspended bed material. Typically, the washload is composed of silt-and-clay-size sediment, and the suspended bed material is composed of sand-size sediment. In most rivers, as a result of changes in the upstream supply of silt and clay, large, systematic changes in the concentration of the washload occur over time, independent of changes in water discharge. Recent work has shown that large, systematic, discharge-independent changes in the concentration of the suspended bed material are also present in many rivers. In bedrock canyon rivers, such as the Colorado River in Grand Canyon National Park, changes in the upstream tributary supply of sand may cause large changes in the grain-size distribution of the bed sand, resulting in changes in both the concentration and grain-size distribution of the sand in suspension. Large discharge-independent changes in suspended-sand concentration coupled to discharge-independent changes in the grain-size distribution of the suspended sand are not unique to bedrock canyon rivers, but also occur in large alluvial rivers, such as the Mississippi River. These systematic changes in either suspended-silt-and-clay concentration or suspended-sand concentration may not be detectable by using conventional equal-discharge- or equal-width-increment measurements, which may be too infrequently collected relative to the time scale over which these changes in the sediment load are occurring. Furthermore, because large discharge-independent changes in both suspended-silt-and-clay and suspended-sand concentration are possible in many rivers, methods using water discharge as a proxy for suspended-sediment concentration (such as sediment rating curves) may not produce sufficiently accurate estimates of sediment loads. Finally, conventional suspended-sediment measurements are both labor and cost intensive and may not be possible at the resolution required to resolve discharge-independent changes in suspended-sediment concentration, especially in more remote locations. For these reasons, the U.S. Geological Survey has pursued the use of surrogate technologies (such as acoustic and laser diffraction) for providing higher-resolution measurements of suspended-sediment concentration and grain size than are possible by using conventional suspended-sediment measurements alone. These factors prompted the U.S. Geological Survey's Grand Canyon Monitoring and Research Center to design and construct a network to automatically measure suspended-sediment transport at 15-minute intervals by using acoustic and laser-diffraction surrogate technologies at remote locations along the Colorado River within Marble and Grand Canyons in Grand Canyon National Park. Because of the remoteness of the Colorado River in this reach, this network also included the design of a broadband satellite-telemetry system to communicate with the instruments deployed at each station in this network. Although the sediment-transport monitoring network described in this report was developed for the Colorado River in Grand Canyon National Park, the design of this network can easily be adapted for use on other rivers, no matter how remote. In the Colorado River case-study example described in this report, suspended-sediment concentration and grain size are measured at five remote stations. At each of these stations, surrogate measurements of suspended-sediment concentration and grain size are made at 15-minute intervals using an array of different single-frequency acoustic-Doppler side-looking profilers. Laser-diffraction instruments are also used at two of these stations to measure both suspended-sediment concentrations and grain-size distributions. Cross-section calibrations of these instruments have been constructed and verified by using either equal-discharge-increment

Griffiths, Ronald E.; Topping, David J.; Andrews, Timothy; Bennett, Glenn E.; Sabol, Thomas A.; Melis, Theodore S.

2012-01-01

82

Adaptive Maintenance Knowledge Bases for Field Service  

Microsoft Academic Search

A maintenance knowledge base (MKB) is an information system capable of offering solutions to diagnostic problems at a level comparable with that of experts in the field. The development of a maintenance knowledge base for a system is an iterative process; it is typically built using previous experience and expertise. In most cases, the development of diagnostic procedures in a

Jianhui Luo; Sudipto Ghoshal; A. Mathur; K. R. Pattipati

2007-01-01

83

Distributed Facility Location for Sensor Network Maintenance  

Microsoft Academic Search

The continuous growth of wireless sensor networks demands new approaches to efficiently manage and service them. We present an approximation solution to the facility location problem for sensor network maintenance based on static sensors and mobile facilities. The main goal is to increase the network lifetime by recharging or redeploying sensors with the help of mobile multi-purpose maintenance facilities. Our

Elio Velasquez; Nicola Santoro

2009-01-01

84

Deferred Maintenance Strategies You Must Try.  

ERIC Educational Resources Information Center

Discusses how some college administrators have found "over-the-counter" cures for deferred maintenance problems resulting from budgeting shortfalls. Catch-up approaches discussed include those involving planning, prioritizing, partnering, and gift giving. (GR)

Sturgeon, Julie

2000-01-01

85

Maintenance operations and pollution prevention  

SciTech Connect

This chapter focuses on pollution prevention in industrial plant maintenance; continuing publicity surrounding environmental concerns suggests that the problems resulting from the generation of waste are approaching crisis proportions with the general public and have reached the highest levels of government. The initial reaction to these concerns has been the development of pollution prevention programs within most manufacturing plants. The long-term response must ben an emphasis on pollution prevention in all activities associated with manufacturing--from design and engineering through construction and operation. One area in which a pollution prevention orientation is crucial in maintenance, the vital link assuring that operation of the unit is able to achieve a performance level consistent with design and engineering. Many activities associated with maintenance, such as good housekeeping, tank cleaning, inventory control, and waste segregation, are among the first areas addressed in a pollution prevention program.

Berglund, R.L. [M.W. Kellogg Co., Houston, TX (United States)

1995-09-01

86

Winter Maintenance Guidelines for Porous Asphalt Maintenance  

E-print Network

Winter Maintenance Guidelines for Porous Asphalt General Maintenance · Plow after every storm · Up to ~75% net salt reductions for porous asphalt have been documented. USE SALT REDUCTION NUMBERS Asphalt Pavement Association (PAPA) Porous Asphalt Pavements Guide: http://www.pahotmix.org/PDF/porous1

87

The Analysis of an Ill-Posed Problem Using Multi-Scale Resolution and Second-Order Adjoint  

E-print Network

Slide 1 #12;Outline of talk Ill-posed problems Singular Value decomposition as a tool Computerized tomography Input is an X-ray source System is the object being scanned (often the human brain of is a decomposition of the form: ¡¢ £¥¤ ¦¦§ ¨© ¦ ¤ ¦ (1) where

Navon, Michael

88

Inventorying Stressful Life Events as Risk Factors for Psychopathology: Toward Resolution of the Problem of Intracategory Variability  

ERIC Educational Resources Information Center

An explosion of research on life events has occurred since the publication of the Holmes and Rahe checklist in 1967. Despite criticism, especially of their use in research on psychopathology, such economical inventories have remained dominant. Most of the problems of reliability and validity with traditional inventories can be traced to the…

Dohrenwend, Bruce P.

2006-01-01

89

Facilities maintenance handbook  

NASA Technical Reports Server (NTRS)

This handbook is a guide for facilities maintenance managers. Its objective is to set minimum facilities maintenance standards. It also provides recommendations on how to meet the standards to ensure that NASA maintains its facilities in a manner that protects and preserves its investment in the facilities in a cost-effective manner while safely and efficiently performing its mission. This handbook implements NMI 8831.1, which states NASA facilities maintenance policy and assigns organizational responsibilities for the management of facilities maintenance activities on all properties under NASA jurisdiction. It is a reference for facilities maintenance managers, not a step-by-step procedural manual. Because of the differences in NASA Field Installation organizations, this handbook does not assume or recommend a typical facilities maintenance organization. Instead, it uses a systems approach to describe the functions that should be included in any facilities maintenance management system, regardless of its organizational structure. For documents referenced in the handbook, the most recent version of the documents is applicable. This handbook is divided into three parts: Part 1 specifies common definitions and facilities maintenance requirements and amplifies the policy requirements contained in NMI 8831. 1; Part 2 provides guidance on how to meet the requirements of Part 1, containing recommendations only; Part 3 contains general facilities maintenance information. One objective of this handbook is to fix commonality of facilities maintenance definitions among the Centers. This will permit the application of uniform measures of facilities conditions, of the relationship between current replacement value and maintenance resources required, and of the backlog of deferred facilities maintenance. The utilization of facilities maintenance system functions will allow the Centers to quantitatively define maintenance objectives in common terms, prepare work plans, and develop management information in order to statistically identify and analyze variances from those plans. It will also add credibility to the NASA facilities maintenance budgeting process. The key to a successful maintenance program is the understanding and support of the senior Center managers.

1991-01-01

90

Inventorying Stressful Life Events as Risk Factors for Psychopathology: Toward Resolution of the Problem of Intracategory Variability  

PubMed Central

An explosion of research on life events has occurred since the publication of the Holmes and Rahe checklist in 1967. Despite criticism, especially of their use in research on psychopathology, such economical inventories have remained dominant. Most of the problems of reliability and validity with traditional inventories can be traced to the intracategory variability of actual events reported in their broad checklist categories. The purposes of this review are, first, to examine how this problem has been addressed within the tradition of economical checklist approaches; second, to determine how it has been dealt with by far less widely used and far less economical labor-intensive interview and narrative-rating approaches; and, third, to assess the prospects for relatively economical, as well as reliable and valid, solutions. PMID:16719570

Dohrenwend, Bruce P.

2006-01-01

91

The analysis of an ill-posed problem using multi-scale resolution and second-order adjoint techniques  

Microsoft Academic Search

A wavelet regularization approach is presented for dealing with an ill-posed problem of adjoint parameter estimation applied to estimating inflow parameters from down-flow data in an inverse convection case applied to the two-dimensional parabolized Navier–Stokes equations. The wavelet method provides a decomposition into two subspaces, by identifying both a well-posed as well as an ill-posed subspace, the scale of which

A. K. Alekseev; I. Michael Navon

2001-01-01

92

The Variational Theory of Complex Rays: An answer to the resolution of mid-frequency 3D engineering problems  

NASA Astrophysics Data System (ADS)

The Variational Theory of Complex Rays (VTRC) is an approach to the simulation of mid-frequency phenomena whose wavelengths are relatively small compared to the dimensions of the domain. This is a wave-based computational technique which involves a nonclassical variational formulation. This paper focuses on the development of the approach for 3D engineering problems and shows that it is a mature technique. Illustrations are given to show the capabilities of this method.

Riou, H.; Ladevèze, P.; Kovalevsky, L.

2013-04-01

93

Light Vehicle Preventive Maintenance.  

ERIC Educational Resources Information Center

This correspondence course, originally developed for the Marine Corps, is designed to instruct students in the performance of preventive maintenance on motor vehicles. Instructional materials are presented in three chapters as follows: (1) Major Maintenance Areas (maintenance system, tires, batteries, cooling systems, and vehicle lubrication; (2)…

Marine Corps Inst., Washington, DC.

94

Maintenance team inspections  

Microsoft Academic Search

Good maintenance is a key factor in achieving and maintaining a high level of safety in plant operations throughout the life of a nuclear power plant. Thus, maintenance was chosen as the special area of emphasis in the Mandatory Team Inspection Program. This emphasis will continue throughout 1990 due to the increased interest in maintenance and the proposed rulemaking being

A. T. Gody; E. McKenna; K. R. Hart

1990-01-01

95

Asphalt in Pavement Maintenance.  

ERIC Educational Resources Information Center

Maintenance methods that can be used equally well in all regions of the country have been developed for the use of asphalt in pavement maintenance. Specific information covering methods, equipment and terminology that applies to the use of asphalt in the maintenance of all types of pavement structures, including shoulders, is provided. In many…

Asphalt Inst., College Park, MD.

96

Guideline on Software Maintenance.  

ERIC Educational Resources Information Center

Citing a need for a strong, clearly-defined approach to software maintenance, this report emphasizes the importance of maintenance throughout the life cycle of a software system. It also stresses the need to plan, develop, use, and maintain a software system with future maintenance in mind. The report presents guidance for controlling and…

National Bureau of Standards (DOC), Washington, DC.

97

Microgravity maintenance workstation development  

Microsoft Academic Search

Space Station maintenance workstation will be used to support equipment servicing and repair operations. The maintenance workstation provides different work area configurations, giving open workbench or a contained area. In the conceptual design evaluated, up to five operators can work at the workstation simultaneously. A series of maintenance workstation evaluations have been conducted at NASA Johnson Space Center to determine

Mihriban Whitmore; Frances E. Mount

1995-01-01

98

Decelerating Flows in TeV Blazars: A Resolution to the BL Lac -- FR I Unification Problem  

NASA Technical Reports Server (NTRS)

TeV emission from BL Lacertae (BL) objects i s commonly modeled as Synchrotron-Self Compton (SSC) radiation from relativistically moving homogeneous plasma blobs. In the context of these models, the blob Lorentz factors needed to reproduce the corrected for absorption by the diffuse IR background (DIRB) TeV emission are large ($\\delta \\gtrsim 50$). The main reason for this is that stronger beaming eases the problem of the lack of $\\sim$ IR-UV synchrotron seed photons needed to produce the de-absorbed $\\sim $ few TeV peak of the spectral energy distribution (SED). However, such high Doppler factors are in strong disagreement with the unified scheme, according to which BLs are FR I radio galaxies with their jets closely aligned to the line of sight. Here, motivated by the detection of sub-luminal velocities in the sub-pc scale jets of the best studied TeV blazars, MKN 421 and MKN 501, we examine the possibility that the relativistic flows in the TeV BLs decelerate. In this case, the problem of the missing seed photons is solved because of Upstream Compton (UC) scattering, a process in which the upstream energetic electrons from the fast base of the flow 'see' the synchrotron seed photons produced in the slow part of the flow relativistically beamed. Modest Lorentz factors ($\\Gamma \\sim 15$), decelerating down to values compatible with the recent radio interferometric observations, reproduce the $\\sim $ few TeV peak energy of these sources. Furthermore, such decelerating flows are shown to be in agreement with the BL - FR I unification, naturally reproducing the observed BL/FR I broadband luminosity ratios.

Kazanas, Demosthenes

2005-01-01

99

Innovation for maintenance technology improvements  

NASA Technical Reports Server (NTRS)

A group of 34 submitted entries (32 papers and 2 abstracts) from the 33rd meeting of the Mechanical Failures Prevention Group whose subject was maintenance technology improvement through innovation. Areas of special emphasis included maintenance concepts, maintenance analysis systems, improved maintenance processes, innovative maintenance diagnostics and maintenance indicators, and technology improvements for power plant applications.

Shives, T. R. (editor); Willard, W. A. (editor)

1982-01-01

100

Industrial Maintenance Resource Website  

NSDL National Science Digital Library

This website, authored by Maintenance Resources.com provides a series of helpful how-to articles about various topics related to industrial maintenance, such as variable speed drives, fluid power, and mechanics The topics covered include: alignment, balancing, bearing, belts, CMMS, CNC, compressors, compressed air, control valves, electrical, failure analysis, gears, hydraulics, infrared thermography, maintenance management, motor drives, oil analysis, pipefitting, pumps, RCM/predictive maintenance, roller chain drives, seals, shafts, Spanish articles, steam traps, and vibration analysis. This is a nice collection of resource relating to the fundamental elements of this topic.

101

A Study on Machine Maintenance Scheduling Using Distributed Cooperative Approach  

NASA Astrophysics Data System (ADS)

In this study, we propose a distributed cooperative scheduling method, and apply the method into a machine maintenance scheduling problem in re-entrant production systems. As one of the distributed cooperative scheduling methods, we focus on Lagrangian decomposition and coordination (LDC) method, and formulate the machine maintenance scheduling problem with LDC so as to improve computational efficiency by decomposing an original scheduling problem into several sub-problems. The derived solutions by solving the decomposed dual problem are converted into feasible solutions with a heuristic procedure applied in this study. The proposed approach regards maintenance as job with starting and finishing time constraints, so that product and maintenance schedule can realize proper maintenance operations without losing productivity. We show the effectiveness of the proposed method in several simulation experiments.

Tsujibe, Akihisa; Kaihara, Toshiya; Fujii, Nobutada; Nonaka, Youichi

102

Maintenance of School Gymnasiums.  

ERIC Educational Resources Information Center

Procedures are suggested that may be helpful to those responsible for the operation and maintenance of school buildings and gymnasiums. Most schools with gymnasiums utilize them for both instructional and sports purposes. Maintenance of the multipurpose gym are discussed under four subject areas--(1) floors, (2) lighting, (3) sanitation, and (4)…

Finchum, R. N.

1965-01-01

103

Total Productive Maintenance (TPM)  

NSDL National Science Digital Library

It can be considered as the medical science of machines. Total Productive Maintenance (TPM) is a maintenance program which involves a newly defined concept for maintaining plants and equipment. The goal of the TPM program is to markedly increase production while, at the same time, increasing employee morale and job satisfaction.TPM brings maintenance into focus as a necessary and vitally important part of the business. It is no longer regarded as a non-profit activity. Down time for maintenance is scheduled as a part of the manufacturing day and, in some cases, as an integral part of the manufacturing process. The goal is to hold emergency and unscheduled maintenance to a minimum.

104

Aviation Maintenance Alerts  

NSDL National Science Digital Library

The FAA has published monthly aviation maintenance alerts online for the past 10 years. This site is of particular interests for those studying or teaching aviation maintenance, as it will provide users with up to date maintenance alerts. The alerts contain critical reports that regard manufacturing defects or design flaws, along with any known solutions to the issues. In addition to alerts, visitors can find out how to report safety issues, as well as obtain information on aircraft safety programs funded by the FAA.

105

Care and Maintenance.  

ERIC Educational Resources Information Center

The classroom care and maintenance of terrestrial isopods is described. Includes illustrations of isopod external anatomy, a potato trap for collecting isopods, and a constructed habitat for raising isopods. (MA)

Hampton, Carolyn H.; Hampton, Carol D.

1979-01-01

106

MAINTENANCE The Aviation Maintenance Technology Program offers an associate of  

E-print Network

AVIATION MAINTENANCE TECHNOLOGY The Aviation Maintenance Technology Program offers an associate of applied science in aviation maintenance and certificates in airframe, powerplant, or airframe and powerplant maintenance. It is one of the few twelve month Federal Aviation Administration Part-147 certified

Ickert-Bond, Steffi

107

Qualitative Analysis for Maintenance Process Assessment  

NASA Technical Reports Server (NTRS)

In order to improve software maintenance processes, we first need to be able to characterize and assess them. These tasks must be performed in depth and with objectivity since the problems are complex. One approach is to set up a measurement-based software process improvement program specifically aimed at maintenance. However, establishing a measurement program requires that one understands the problems to be addressed by the measurement program and is able to characterize the maintenance environment and processes in order to collect suitable and cost-effective data. Also, enacting such a program and getting usable data sets takes time. A short term substitute is therefore needed. We propose in this paper a characterization process aimed specifically at maintenance and based on a general qualitative analysis methodology. This process is rigorously defined in order to be repeatable and usable by people who are not acquainted with such analysis procedures. A basic feature of our approach is that actual implemented software changes are analyzed in order to understand the flaws in the maintenance process. Guidelines are provided and a case study is shown that demonstrates the usefulness of the approach.

Brand, Lionel; Kim, Yong-Mi; Melo, Walcelio; Seaman, Carolyn; Basili, Victor

1996-01-01

108

Maintenance care in chiropractic – what do we know?  

Microsoft Academic Search

BACKGROUND: Back problems are often recurring or chronic. It is therefore not surprising that chiropractors wish to prevent their return or reduce their impact. This is often attempted with a long-term treatment strategy, commonly called maintenance care. However, some aspects of maintenance care are considered controversial. It is therefore relevant to investigate the scientific evidence forming the basis for its

Charlotte Leboeuf-Yde; Lise Hestbæk

2008-01-01

109

Health Maintenance Organizations and the Elderly: Promises, Problems, and Prospects. Hearing before the Select Committee on Aging. House of Representatives, Ninety-Eighth Congress, Second Session (Boca Raton, Florida).  

ERIC Educational Resources Information Center

This document contains the transcripts of witness testimony and prepared statements from the Congressional hearing called to explore the impact of the Health Maintenance Organization (HMO) on the health care system and on the elderly in particular. Opening statements are given from Representatives Dan Mica, Matthew Rinaldo, and Lawrence Smith.…

Congress of the U.S., Washington, DC. House Select Committee on Aging.

110

Software Maintenance Documentation  

Microsoft Academic Search

This work aims at presenting a model for assisting in the development of Information System for software maintenance documentation.It seeks to emphasize the optimization of the functions related to the documentation, by employing automatic processes.In this study the system of documentation is based on a Data Dictionary structure, adequately designed for the organized storage of the information needed for the

Miheko L. Ouchi; S. Paolo

1985-01-01

111

Total Productive Maintenance  

NSDL National Science Digital Library

Created by Kaye Krueger of Wisconsin Online Resource Center, this presentation allows user to read about how total productive maintenance can prevent breakdowns, defects, and a variety of other losses. This is a nice brief introduction to this important topic in manufacturing engineering.

Krueger, Kaye

112

Care and Maintenance.  

ERIC Educational Resources Information Center

Described is a method for bringing the sea into the classroom by setting up a saltwater aquarium. Included is selection of an aquarium, filtering systems, water (whether natural salt or synthetic sea salts), bottom materials, setting up an aquarium, system stabilization, stocking an aquarium, and maintenance of the aquarium. (DS)

Hampton, Carol D.; Hampton, Carolyn H.

1980-01-01

113

Floors: Care and Maintenance.  

ERIC Educational Resources Information Center

Guidelines, methods and policies regarding the care and maintenance of post office building floors are overviewed in this handbook. Procedures outlined are concerned with maintaining a required level of appearance without wasting manpower. Flooring types and characteristics and the particular cleaning requirements of each type are given along with…

Post Office Dept., Washington, DC.

114

Electrical Maintenance Technician.  

ERIC Educational Resources Information Center

This document contains 30 units to consider for use in a tech prep competency profile for the occupation of electrical maintenance technician. All the units listed will not necessarily apply to every situation or tech prep consortium, nor will all the competencies within each unit be appropriate. Several units appear within each specific…

Ohio State Univ., Columbus. Center on Education and Training for Employment.

115

Computerized Fleet Maintenance.  

ERIC Educational Resources Information Center

The computerization of school bus maintenance records by the Niskayuna (New York) Central School District enabled the district's transportation department to engage in management practices resulting in significant savings. The district obtains computer analyses of the work performed on all vehicles, including time spent, parts, labor, costs,…

Cataldo, John J.

116

Multiagent truth maintenance  

Microsoft Academic Search

The concept of logical consistency of belief among a group of computational agents that are able to reason nonmonotonically is defined. An algorithm for truth maintenance is then provided that guarantees local consistency for each agent and global consistency for data shared by the agents. The algorithm is shown to be complete, in the sense that if a consistent state

Michael N. Huhns; David M. Bridgeland

1991-01-01

117

Sewer Maintenance Manual.  

ERIC Educational Resources Information Center

Outlined are practices and procedures that should be followed in order to protect and fully realize the benefits of sewer systems and also to maximize service and minimize inconveniences to the public. Written in practical terms, the manual is designed to be of immediate use to municipal employees and others involved in sewer maintenance

Ontario Ministry of the Environment, Toronto.

118

Operations and maintenance philosophy  

SciTech Connect

This Operations and Maintenance (O&M) Philosophy document is intended to establish a future O&M vision, with an increased focus on minimizing worker exposure, ensuring uninterrupted retrieval operations, and minimizing operation life-cycle cost. It is intended that this document would incorporate O&M lessons learned into on-going and future project upgrades.

DUNCAN, G.P.

1999-10-28

119

Diesel Vehicle Maintenance Competencies.  

ERIC Educational Resources Information Center

Designed to provide a model set of competencies, this manual presents tasks which were identified by employers, employees, and teachers as important in a postsecondary diesel vehicle maintenance curriculum. The tasks are divided into seven major component areas of instruction: chassis and suspension, diesel engines, diesel fuel, electrical,…

Braswell, Robert; And Others

120

Aviation Maintenance Technician Handbook  

NSDL National Science Digital Library

This document from SpaceTEC National Aerospace Technical Education Center is one of three handbooks for people preparing for mechanic certification with airframe or powerplant ratings, or both. This particular volume contains information on mathematics, aircraft drawings, weight and balance, aircraft materials, processes and tools, physics, electricity, inspection, ground operations, and FAA regulations governing the certification and work of maintenance technicians.

2011-07-20

121

CH Packaging Maintenance Manual  

SciTech Connect

This procedure provides instructions for performing inner containment vessel (ICV) and outer containment vessel (OCV) maintenance and periodic leakage rate testing on the following packaging seals and corresponding seal surfaces using a nondestructive helium (He) leak test. In addition, this procedure provides instructions for performing ICV and OCV structural pressure tests.

Washington TRU Solutions

2002-01-02

122

Home Maintenance Manual.  

ERIC Educational Resources Information Center

This manual, written especially for the Navajo and Hopi Indian Relocation Commission, is a simply worded, step-by-step guide to home maintenance for new homeowners. It can be used for self-study or it can serve as instructional material for a training class on home ownership. The manual is organized in nine sections that cover the following…

Richmond, Jim; And Others

123

Maritime and offshore structure maintenance  

SciTech Connect

This volume provides the most up-to date material available on methods of keeping maritime installations operational. It also draws out the exceptionally valuable expertise that has been gained from servicing the major installations in the North Sea and elsewhere in the world. Subjects cover maintenance and repair including a detailed analysis of structural maintenance on specific structures. Papers include expertise in North Sea structures, corrosion protection of a North Sea platform, maintenance of ports overseas, East Africa, low maintenance concrete and maintenance of steel offshore structures. Guidelines are also included for the inspection and maintenance of marine facilities and offshore installations.

Not Available

1986-01-01

124

Process Technology: Process Maintenance Engineer  

NSDL National Science Digital Library

In this video adapted from Pathways to Technology, youâ??ll meet Tyrone Walker, who keeps the enormous machines at a Tupperware factory running 24/7/365. Tyrone is a process maintenance engineer. This means he inspects all the parts of a machineâ??s electronics system looking for problems, from the tiniest components to the machine as a whole. Tyrone's community college degree in electronic engineering is key to doing this job, which he loves.The video runs 2:46 and is accompanied by a background essay, standards alignment, and discussion questions. Users who sign up for a free account can save the resource and download the video as well.

125

Designing an on-line multimedia maintenance manual for a production environment  

E-print Network

advanced and need less maintenance. As a result, maintenance personnel face more difficult tasks. The literature states that this is a typical problem in the execution of maintenance procedures. Based Mechatronics, Philips Centre for Manufacturing Technology, Eindhoven, The Netherlands. 2 . Psychology

Brinkman, Willem-Paul

126

Maintenance Decision Support System in Small and Medium Industries: An Approach to New Optimization Model  

Microsoft Academic Search

Summary Maintenance management is one of the main focuses in industrial sector. Many maintenance functions with varieties optimization models have been proposed to aid maintenance management. However, there are limited models have been implemented in small and medium industries (SMIs). The data problems and the gap between theory and practice have always become a reason. In this paper, a new

Zulkifli Tahir; Anton Satria Prabuwono; Hang Tuah Jaya

2008-01-01

127

A Fuzzy Comprehensive Evaluation Method of Maintenance Quality Based on Improved Radar Chart  

Microsoft Academic Search

There are some problems in comprehensive evaluation of maintenance quality. For example, the evaluation is invisible, the importance of each factor is unclear, and especially the appraisal results ordering of several appraisal objects with similar maintenance quality performance is difficult. For this, this paper presents an improved radar chart model and studies the fuzzy comprehensive evaluation of maintenance quality based

Liu Hongliang; Liu Anxin; Zhang Bin; Zhang Tiefu; Zhang Xin

2008-01-01

128

Knowledge architecture and framework design for preventing human error in maintenance tasks  

Microsoft Academic Search

Effective and efficient problem solving mechanism is one of the critical processes that ensure a good service quality in the maintenance environment. Maintenance errors can be easily induced by the time stress due to frequent task varieties and logistic decision uncertainties. In the sense, comprehensive maintenance support to the maintainers in critical events to reduce maintainer errors was strongly suggested.

Kuo-Wei Su; Sheue-Ling Hwang; Thu-Hua Liu

2000-01-01

129

Coal pile environmental impact problems  

SciTech Connect

Some of such problems are discussed briefly: water pollution; ground water contamination; air pollution by fugitive dust; noise generated by maintenance machinery; fires and safety; aesthetics; and solutions of such problems.

Cross, F.L.

1981-07-01

130

Flight Crew Health Maintenance  

NASA Technical Reports Server (NTRS)

The health maintenance program for commercial flight crew personnel includes diet, weight control, and exercise to prevent heart disease development and disability grounding. The very high correlation between hypertension and overweight in cardiovascular diseases significantly influences the prognosis for a coronary prone individual and results in a high rejection rate of active military pilots applying for civilian jobs. In addition to physical fitness the major items stressed in pilot selection are: emotional maturity, glucose tolerance, and family health history.

Gullett, C. C.

1970-01-01

131

AUTOMOTIVE DIESEL MAINTENANCE. PROGRAM OUTLINE.  

ERIC Educational Resources Information Center

INFORMATIONAL TOPICS COVERED IN THE TEXT MATERIALS AND SELF-INSTRUCTIONAL BRANCH PROGRAMED TRAINING FILMS FOR A 2-YEAR, 55 MODULE PROGRAM IN AUTOMOTIVE DIESEL MAINTENANCE ARE GIVEN. THE 30 MODULES FOR "AUTOMOTIVE DIESEL MAINTENANCE 1" ARE AVAILABLE AS VT 005 655 - VT 005 684, AND THE 25 MODULES FOR "AUTOMOTIVE DIESEL MAINTENANCE 2" ARE AVAILABLE…

Human Engineering Inst., Cleveland, OH.

132

NUPlans Web Chart String Maintenance  

E-print Network

NUPlans Web Chart String Maintenance Job Aid NUPlansChartStringMaintV1.1 Last Updated 4/14/2013 - mac © 2013 Northwestern University FMS705 NUPlans Web 1 of 3 Chart String Maintenance in NUPlans Web. This job aid helps you understand and complete tasks related to chart string maintenance in NUPlans Web

Shull, Kenneth R.

133

Maintenance of Neuronal Polarity  

PubMed Central

Neurons are highly polarized cells with distinct domains responsible for receiving, transmitting, and propagating electrical signals. Central to these functions is the axon initial segment (AIS), a short region of the axon adjacent to the cell body that is enriched in voltage-gated ion channels, cell adhesion molecules, and cytoskeletal scaffolding proteins. Traditionally, the function of the AIS has been limited to its role in action potential initiation and modulation. However, recent experiments indicate that it also plays essential roles in neuronal polarity. Here, we review how initial segments are assembled, and discuss proposed mechanisms for how the AIS contributes to maintenance of neuronal polarity. PMID:21557501

Ho, Tammy Szu-Yu; Rasband, Matthew N.

2010-01-01

134

Demystifying maintenance of certification.  

PubMed

Board certification for a medical specialty was first proposed in 1908. Subsequently, the American Board of Medical Specialties (ABMS) was formed in 1933. The ABMS approved emergency medicine as the 23rd medical specialty in 1979. Since its inception, the American Board of Emergency Medicine (ABEM) has always had time-limited certification requiring a recertification examination every 10 years. The notion of recertification has since evolved into maintenance of certification (MOC). I define the various components of the ABEM MOC program. The MOC axioms of continuous professional development and adherence to quality development are discussed. Finally, physician participation in the ABEM MOC is reviewed. PMID:23489653

Nelson, Richard N

2014-04-01

135

Fusion unit preventive maintenance  

SciTech Connect

The lack of preventive maintenance on any mechanical apparatus can lead to the death of that machine. Experience with fusion equipment, as well as other special purpose equipment manufactured has shown that improperly maintained equipment will require overhaul maintenance from 6 to 10 times earlier than a properly maintained one. This figure can probably be used for most pieces of equipment. The principle of heat fusion is to heat two opposing surfaces of a polyolefin material to a designated temperature, then fuse them together by application of a designated force. This causes flow of the melted materials that results in mixing of the molecular chains and thus fusion. Polyethylene consists of crystalline and amorphous materials, but for all practical purposes, at normal ambient temperatures, it is basically a crystalline structure. When the polyethylene is heated beyond melting temperature, the crystallinity disappears completely and the molecular structure becomes completely amorphous (has no definite shape). When fusion force is applied, the amorphous molecules from each pipe end or fitting mix. As the joint cools below the crystalline melting point, the molecular chain becomes crystalline again. When proper mixing occurs, crystals are formed from one pipe through the joining plane to the other pipe. The original interfaces are gone and the two pipes or fittings have become one homogenous material. The joint area becomes stronger than the pipe or fitting themselves.

Striplin, T.H.

1986-07-01

136

Towards automated traceability maintenance  

PubMed Central

Traceability relations support stakeholders in understanding the dependencies between artifacts created during the development of a software system and thus enable many development-related tasks. To ensure that the anticipated benefits of these tasks can be realized, it is necessary to have an up-to-date set of traceability relations between the established artifacts. This goal requires the creation of traceability relations during the initial development process. Furthermore, the goal also requires the maintenance of traceability relations over time as the software system evolves in order to prevent their decay. In this paper, an approach is discussed that supports the (semi-) automated update of traceability relations between requirements, analysis and design models of software systems expressed in the UML. This is made possible by analyzing change events that have been captured while working within a third-party UML modeling tool. Within the captured flow of events, development activities comprised of several events are recognized. These are matched with predefined rules that direct the update of impacted traceability relations. The overall approach is supported by a prototype tool and empirical results on the effectiveness of tool-supported traceability maintenance are provided. PMID:23471308

Mäder, Patrick; Gotel, Orlena

2012-01-01

137

Remote maintenance monitoring system  

NASA Technical Reports Server (NTRS)

A remote maintenance monitoring system retrofits to a given hardware device with a sensor implant which gathers and captures failure data from the hardware device, without interfering with its operation. Failure data is continuously obtained from predetermined critical points within the hardware device, and is analyzed with a diagnostic expert system, which isolates failure origin to a particular component within the hardware device. For example, monitoring of a computer-based device may include monitoring of parity error data therefrom, as well as monitoring power supply fluctuations therein, so that parity error and power supply anomaly data may be used to trace the failure origin to a particular plane or power supply within the computer-based device. A plurality of sensor implants may be rerofit to corresponding plural devices comprising a distributed large-scale system. Transparent interface of the sensors to the devices precludes operative interference with the distributed network. Retrofit capability of the sensors permits monitoring of even older devices having no built-in testing technology. Continuous real time monitoring of a distributed network of such devices, coupled with diagnostic expert system analysis thereof, permits capture and analysis of even intermittent failures, thereby facilitating maintenance of the monitored large-scale system.

Simpkins, Lorenz G. (Inventor); Owens, Richard C. (Inventor); Rochette, Donn A. (Inventor)

1992-01-01

138

Risk-based maintenance modeling. Prioritization of maintenance importances and quantification of maintenance effectiveness  

SciTech Connect

This report describes methods for prioritizing the risk importances of maintenances using a Probabilistic Risk Assessment (PRA). Approaches then are described for quantifying their reliability and risk effects. Two different PRA importance measures, minimal cutset importances and risk reduction importances, were used to prioritize maintenances; the findings show that both give similar results if appropriate criteria are used. The justifications for the particular importance measures also are developed. The methods developed to quantify the reliability and risk effects of maintenance actions are extensions of the usual reliability models now used in PRAs. These extended models consider degraded states of the component, and quantify the benefits of maintenance in correcting degradations and preventing failures. The negative effects of maintenance, including downtimes, also are included. These models are specific types of Markov models. The data for these models can be obtained from plant maintenance logs and from the Nuclear Plant Reliability Data System (NPRDS). To explore the potential usefulness of these models, the authors analyzed a range of postulated values of input data. These models were used to examine maintenance effects on a components reliability and performance for various maintenance programs and component data. Maintenance schedules were analyzed to optimize the component`s availability. In specific cases, the effects of maintenance were found to be large.

Vesely, W.E.; Rezos, J.T. [Science Applications International Corp., Dublin, OH (United States)

1995-09-01

139

Sustainability of green space maintenance  

E-print Network

In Japan, recent changes in socio-economic and political structures -- decreasing tax revenue, declining communication among community members, and privatization of public services-- have influenced existing maintenance ...

Nomura, Wataru

2011-01-01

140

Low Maintenance Verification Valeria Bertacco  

E-print Network

Low Maintenance Verification Valeria Bertacco Advanced Computer Architecture Lab The University of Michigan ­ Ann Arbor, MI Email: valeria@umich.edu Abstract-- Guaranteeing the functional correctness

Bertacco, Valeria

141

Evaluation of Counseling Outcomes at a University Counseling Center: The Impact of Clinically Significant Change on Problem Resolution and Academic Functioning  

ERIC Educational Resources Information Center

The main purpose of this study was to investigate how receiving personal counseling at a university counseling center helps students deal with their personal problems and facilitates academic functioning. To that end, this study used both clinical and academic outcome measures that are relevant to the practice of counseling provided at a…

Choi, Keum-Hyeong; Buskey, Wendy; Johnson, Bonita

2010-01-01

142

Illinois Occupational Skill Standards: Industrial Maintenance General Maintenance Cluster.  

ERIC Educational Resources Information Center

These skill standards for the industrial maintenance general maintenance cluster are intended to be a guide to workforce preparation program providers in defining content for their programs and to employers to establish the skills and standards necessary for job acquisition. An introduction provides the Illinois perspective; Illinois Occupational…

Illinois Occupational Skill Standards and Credentialing Council, Carbondale.

143

IMIS: Integrated Maintenance Information System. A maintenance information delivery concept  

NASA Technical Reports Server (NTRS)

The Integrated Maintenance Information System (IMIS) will optimize the use of available manpower, enhance technical performance, improve training, and reduce the support equipment and documentation needed for deployment. It will serve as the technician's single, integrated source of all the technical information required to perform modern aircraft maintenance.

Vonholle, Joseph C.

1987-01-01

144

Automotive Engine Maintenance and Repair.  

ERIC Educational Resources Information Center

This correspondence course, originally developed for the Marine Corps, is designed to provide students with an understanding of automotive engine maintenance and repair. The course contains six study units covering automotive engine maintenance and repair; design classification; engine malfunction, diagnosis, and repair; engine disassembly; engine…

Marine Corps Inst., Washington, DC.

145

Scheduling technicians for planned maintenance of geographically distributed equipment  

Microsoft Academic Search

A real-world planned maintenance scheduling problem that exists at several business units within United Technologies Corporation (UTC) is addressed in this paper. The scheduling problem is formulated as a multiple tour maximum collection problem with time-dependent rewards and an adaptive memory tabu search heuristic is developed to solve it. The effectiveness of the proposed solution approach is examined using real-world

Hao Tang; Elise Miller-Hooks; Robert Tomastik

2007-01-01

146

Resolution Matters  

NSDL National Science Digital Library

This is an activity about image resolution. Learners will recreate a solar image taken by the Solar Dynamics Observatory (SDO) using various sizes of building bricks, and discuss how their recreations relate to image resolution. Learners will also compare SDO images to solar images from older spacecraft to see how improved technology helps scientists learn more about the Sun.

147

High resolution drift chambers  

SciTech Connect

High precision drift chambers capable of achieving less than or equal to 50 ..mu..m resolutions are discussed. In particular, we compare so called cool and hot gases, various charge collection geometries, several timing techniques and we also discuss some systematic problems. We also present what we would consider an ''ultimate'' design of the vertex chamber. 50 refs., 36 figs., 6 tabs.

Va'vra, J.

1985-07-01

148

Cell Maintenance Systems  

NASA Technical Reports Server (NTRS)

Living human cells require attachment to a suitable surface and special culture conditions in order to grow. These requirements are modified and amplified when cells are taken into a weightless environment. Special handling and maintenance systems are required for routine laboratory procedures conducted in the Orbiter and in the Spacelab. Methods were developed to maintain cells in special incubators designed for the Orbiter middeck, however, electrophoresis and other experiments require cells to be harvested off of the culture substrate before they can be processed or used. The cell transport assembly (CTA) was flown on STS-8, and results show that improvements are required to maintain adequate numbers of cells in this device longer than 48 hours. The life sciences middeck centrifuge probably can be used, but modifications will be required to transfer cells from the CTA and keep the cells sterile. Automated systems such as the Skylab SO-15 flight hardware and crew operated systems are being evaluated for use on the Space Shuttle, Spacelab, and Space Station research modules.

Morrison, D. R.

1985-01-01

149

Symbolic Constraint Maintenance Grid  

NASA Technical Reports Server (NTRS)

Version 3.1 of Symbolic Constraint Maintenance Grid (SCMG) is a software system that provides a general conceptual framework for utilizing pre-existing programming techniques to perform symbolic transformations of data. SCMG also provides a language (and an associated communication method and protocol) for representing constraints on the original non-symbolic data. SCMG provides a facility for exchanging information between numeric and symbolic components without knowing the details of the components themselves. In essence, it integrates symbolic software tools (for diagnosis, prognosis, and planning) with non-artificial-intelligence software. SCMG executes a process of symbolic summarization and monitoring of continuous time series data that are being abstractly represented as symbolic templates of information exchange. This summarization process enables such symbolic- reasoning computing systems as artificial- intelligence planning systems to evaluate the significance and effects of channels of data more efficiently than would otherwise be possible. As a result of the increased efficiency in representation, reasoning software can monitor more channels and is thus able to perform monitoring and control functions more effectively.

James, Mark

2006-01-01

150

Robots for Aircraft Maintenance  

NASA Technical Reports Server (NTRS)

Marshall Space Flight Center charged USBI (now Pratt & Whitney) with the task of developing an advanced stripping system based on hydroblasting to strip paint and thermal protection material from Space Shuttle solid rocket boosters. A robot, mounted on a transportable platform, controls the waterjet angle, water pressure and flow rate. This technology, now known as ARMS, has found commercial applications in the removal of coatings from jet engine components. The system is significantly faster than manual procedures and uses only minimal labor. Because the amount of "substrate" lost is minimal, the life of the component is extended. The need for toxic chemicals is reduced, as is waste disposal and human protection equipment. Users of the ARMS work cell include Delta Air Lines and the Air Force, which later contracted with USBI for development of a Large Aircraft Paint Stripping system (LARPS). LARPS' advantages are similar to ARMS, and it has enormous potential in military and civil aircraft maintenance. The technology may also be adapted to aircraft painting, aircraft inspection techniques and paint stripping of large objects like ships and railcars.

1993-01-01

151

14 CFR 121.365 - Maintenance, preventive maintenance, and alteration organization.  

Code of Federal Regulations, 2011 CFR

...preventive maintenance, and alteration organization. 121.365 Section 121.365 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION...Preventive Maintenance, and Alterations § 121.365 Maintenance, preventive maintenance, and...

2011-01-01

152

14 CFR 121.365 - Maintenance, preventive maintenance, and alteration organization.  

Code of Federal Regulations, 2014 CFR

...preventive maintenance, and alteration organization. 121.365 Section 121.365 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION...Preventive Maintenance, and Alterations § 121.365 Maintenance, preventive maintenance, and...

2014-01-01

153

14 CFR 121.365 - Maintenance, preventive maintenance, and alteration organization.  

Code of Federal Regulations, 2012 CFR

...preventive maintenance, and alteration organization. 121.365 Section 121.365 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION...Preventive Maintenance, and Alterations § 121.365 Maintenance, preventive maintenance, and...

2012-01-01

154

14 CFR 121.365 - Maintenance, preventive maintenance, and alteration organization.  

Code of Federal Regulations, 2010 CFR

...preventive maintenance, and alteration organization. 121.365 Section 121.365 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION...Preventive Maintenance, and Alterations § 121.365 Maintenance, preventive maintenance, and...

2010-01-01

155

[Maintenance therapy for colorectal cancer].  

PubMed

Some trials have demonstrated the benefits of maintenance chemotherapy for advanced colorectal cancer. In chemotherapeutic strategies for advanced colorectal cancer, chemotherapy-related toxicity prevention and quality of life(QOL)maintenance are more important than the introduction of a strong regimen, especially when additional surgery is not possible. In Japan, the combination of a folinic acid/5-fluorouracil/oxaliplatin(FOLFOX)regimen and bevacizumab is a popular first-line chemotherapy regimen. However, despite its effectiveness, neuropathy or hand-foot syndrome after 5 or 6 cycles tends to lead to chemotherapy withdrawal. CAIRO3 trial reported the effectiveness of capecitabine and bevacizumab as a maintenance chemotherapy regimen. Additionally, the ML18147 trial demonstrated that bevacizumab beyond progression(BBP)prolonged overall survival(OS)and progression free survival(PFS)in patients with advanced colorectal cancer. Although those trials demonstrated the effectiveness of continuous or maintenance bevacizumab administration, no trials have compared the effectiveness of cytotoxic drugs with bevacizumab as maintenance therapies. Moreover, controversy exists regarding the selection of drugs as a maintenance therapy and the identification of patients who would benefit from maintenance therapy. PMID:25132024

Yamaguchi, Shigeo; Kato, Shunsuke

2014-08-01

156

Psychological health maintenance on Space Station Freedom  

NASA Technical Reports Server (NTRS)

The scheduling of crew rotations at intervals of as much as 180 days on NASA's Space Station Freedom entails that the cumulative effects of psychological, emotional, and social stressors on astronauts be monitored. The Space Station's Health Maintenance Facility (HMF) will furnish preventive, diagnostic, and therapeutic assistance for significant psychiatric and interpersonal problems. Mental health professionals must be part of the team of medical personnel charged with facilitating the physiological and phychological transition from earth to space and back. An account is presently given of the critical factors to be addressed by HMF personnel on extended-duration missions.

Santy, Patricia A.

1990-01-01

157

Optimal scheduling of fighter aircraft maintenance  

E-print Network

The effective scheduling of fighter aircraft maintenance in the Air Force is crucial to overall mission accomplishment. An effective maintenance scheduling policy maximizes the use of maintenance resources and aircraft ...

Cho, Philip Y

2011-01-01

158

Bones and genes: resolution problems in three Vietnamese species of Crocidura (Mammalia, Soricomorpha, Soricidae) and the description of an additional new species  

PubMed Central

Abstract Recent investigations of Southeast Asian white toothed shrews belonging to the genus Crocidura have revealed discrepancies between the results of morphological and molecular studies. The following study concerns three species of Crocidura occurring in Vietnam, namely Crocidura attenuata, Crocidura tanakae and Crocidura wuchihensis, and an undescribed fourth species revealed by molecular analysis. For many years Crocidura attenuata has been known to occur in Vietnam but, until very recently, the morphologically similar and comparably sized Crocidura tanakae was believed to be restricted to Taiwan. Following several molecular studies over the last few years, this species is now believed to be considerably more widespread and recognised as occuring also in Vietnam. The results of one of these recent molecular studies also revealed the presence of an undescribed species of Crocidura, similar in size and morphology to Crocidura wuchihensis, which is herein described. Data are provided on geographical variation in Vietnam and the problems of defining morphologically similar yet molecularly disparate species are discussed. PMID:23840165

Jenkins, Paulina D.; Abramov, Alexei V.; Bannikova, Anna A.; Rozhnov, Viatcheslav V.

2013-01-01

159

Health Maintenance Organization (HMO) Plan  

MedlinePLUS

... your enrollment Find doctors, hospitals, & facilities Health Maintenance Organization (HMO) Plan In most HMO Plans, you can ... certain service when needed. Related Resources Preferred Provider Organization (PPO) Private Fee-for-Service (PFFS) Special Needs ...

160

Avionics Maintenance Technology Program Standards.  

ERIC Educational Resources Information Center

This publication contains statewide standards for the avionics maintenance technology program in Georgia. The standards are divided into the following categories: foundations, diploma/degree (philosophy, purpose, goals, program objectives, availability, evaluation); admissions, diploma/degree (admission requirements, provisional admission…

Georgia Univ., Athens. Dept. of Vocational Education.

161

Maintenance and Monitoring of BMPS  

EPA Science Inventory

Two best management practice (BMP) sites in the Staten Island Bluebelt in Richmond Creek Watershed are Richmond Creek 5 (RC-5) and Richmond Creek 4 (RC-4). This presentation includes site description, briefing of initial monitoring activity, representative maintenance activity, ...

162

Intravenous opiate maintenance in a cohort of injecting drug addicts  

Microsoft Academic Search

Background: Drug addiction is a major problem in many societies. The opiate maintenance program includes a prospective cohort of injecting drug addicts, treated with opiates such as heroin intravenously. An important aim of this program is to keep patients under medical supervision in order to reduce the health hazards associated with illicit drug consumption. In this paper we report the

Pedram Sendi; Matthias Hoffmann; Heiner C Bucher; Peter Erb; Patricia Haller; Niklaus Gyr; Manuel Battegay

2003-01-01

163

Factors affecting effective communication between building clients and maintenance contractors  

Microsoft Academic Search

Purpose – Studies on communication in the construction industry have generally concentrated on the briefing process and the construction process. However, studies on communication problems experienced by building clients' and maintenance contractors' representatives in the field of facilities management are less common. Thus, there is a need for studies of effective communication in facilities management, particularly between building clients' and

Goh Choon Hua; Willy Sher; Low Sui Pheng

2005-01-01

164

Maintenance of Mechanical Equipment in Minnesota Schools, 1968 Survey.  

ERIC Educational Resources Information Center

Results of a one-year research program to study maintenance procedures for operating mechanical equipment were based on the determination of--(1) the present condition and level of performance of operating mechanical equipment, (2) the problems encountered by school administrators and custodial engineers pertaining to operating mechanical…

Larson, R. E.; Rust, L. W.

165

Optimal Maintenance Scheduling of a Gas Engine Power Plant  

E-print Network

is to minimize payment for skilled labor · Plants or equipments will maintain separately · Generator maintenance one of the most significant problems in power systems operation & management ­ Tries to avoid plant involving multiple shutdowns for each generator · Saving online hours for the season with highest

Grossmann, Ignacio E.

166

A Framework for Monitoring and Maintenance of a Tsunami Early Warning System using ITIL®  

NASA Astrophysics Data System (ADS)

Within this work, we present our approach and ongoing efforts to establish monitoring and maintenance processes for Tsunami Early Warning Systems. Practical work is done within the context of the Indonesian Tsunami Warning System (INATEWS) at Badan Meteorologi, Klimatologi dan Geofisika (BMKG) in Jakarta, Indonesia. The German contribution is well known as GITEWS. INATEWS is composed of several thousand integrated system components and numerous software processes. Due to the heterogeneity and complexity of the system, as well as the high availability needs, being an operational TEWS, real-time monitoring, reporting and scheduled preventive maintenance are needed. To develop and install an organizational and operational methodology for maintenance processes for INATEWS, we asserted ITIL® methods and are in development of Standard Operating Procedures (SOP) together with BMKG operational and management staff. ITIL®-conforming methods are one means of IT Service Management which has been adopted by a variety of service oriented IT providers. An early warning system does not expose classical consumer services, but the dissemination of warning messages and an early warning as a product may nevertheless be viewed as distinct services provided by a TEWS. We applied methods from ITIL® to the modular and hierarchical components of an early warning center, where minimum requirements on service availability, reliability and correctness of the warning product exist, from dissemination down to each sensor component. We describe functions of actors that ensure management of incidents and problems, as well as managing applications, IT operations and further technical issues. For the components of the early warning system, we present a model of event detection and event resolution. Real-time monitoring provides automated health-checks. Errors lead to reports to designated targets. Preventive maintenance provides findings on data and system availability, and data quality. Each of the three may lead to event detection, which is filtered, categorized and prioritized. As soon as an event is detected, a corrective maintenance process is triggered, which is modeled as a circular process. The developed procedure is being tested on the full process chain for the seismic component. Afterwards, the model will be applied to the full INATEWS system. Although we present a tailor-made approach for INATEWS, the general schema of our approach can be useful for large and complex warning systems with a multitude of sensors and sensor systems that are widely geographically distributed. It may help to keep each component at a functional level, so that the final product, the dissemination of a warning message, is not going to be endangered, due to malfunction of a sub-component.

Gensch, Stephan; Günther, Michael; Henneberger, Ralph; Strollo, Angelo

2013-04-01

167

Optimal Maintenance and Sale Age for a Machine Subject to Failure  

Microsoft Academic Search

A problem of optimal machine maintenance policy is studied. The value of the machine's output is independent of age, but the natural probability of machine failure increases with age. Preventive maintenance can be applied to reduce the probability of machine failure (but a failed machine can only be junked). The machine may be sold at any time providing it is

Morton I. Kamien; Nancy L. Schwartz

1971-01-01

168

Intelligent aircraft maintenance support system using genetic algorithms and case-based reasoning  

Microsoft Academic Search

The maintenance of aircraft components is crucial for avoiding aircraft accidents and aviation fatalities. To provide reliable and effective maintenance support, it is important for the airline companies to utilise previous repair experience with the aid of advanced decision support technology. Case-based reasoning (CBR) is a machine learning method that adapts previous similar cases to solve current problems. To effectively

C. Chiu; N.-H. Chiu; C.-I. Hsu

2004-01-01

169

Relational maintenance strategies and equity in marriage  

Microsoft Academic Search

Utilizing equity theory, this study extends previous research on maintenance strategies. The manner in which relational maintenance strategies are reported and perceived is examined. It was hypothesized that maintenance strategies are used more in equitable relationships than in relationships characterized by underbenefitedness. Further, the use of maintenance efforts by individuals in overbenefited relationships was explored. In addition, this study examined

Daniel J. Canary; Laura Stafford

1992-01-01

170

Software maintenance outsourcing: Issues and strategies  

Microsoft Academic Search

Software maintenance outsourcing is becoming a popular alternative in software industry. Software companies are looking at outsourcing their maintenance and support activities as an area for competitive advantage. There are risks and benefits of introducing subcontractors in the framework of software outsourcing. Reliable maintenance is only possible if adequate measures are taken in advance during project’s development and maintenance planning

Rana Ejaz Ahmed

2006-01-01

171

Autosite.com Repairs - Maintenance  

NSDL National Science Digital Library

A subsection of Autosite.com, a for-profit (from ads, the content is free) information source for auto buyers, the maintenance and repair area offers free and detailed information on auto care and repair that is accessible but not simplistic. In the maintenance section, users will find a preventative maintenance checklist, illustrated guides to fluids and exterior systems, a discussion on tires, and FAQs. The Repair section features troubleshooting tips, an illustrated repair guide, a fairly deep Auto Repair Encyclopedia, and several related links. Whether you are a die-hard do-it-yourselfer or just prefer to be forearmed before taking your car to the mechanics, this site can help.

172

Aerospace Maintenance Technician Course Volume 2: Aerospace Maintenance  

NSDL National Science Digital Library

This document from SpaceTEC National Aerospace Technical Education Center presents a core readiness course which will serve to prepare individuals entering the aerospace field. The document is 226 pages and includes required proficiencies for aerospace maintenance technicians. Topics include electronic principles, applied mechanics, test and measurements and materials and processes.

Munden, Msgt S.

2011-06-07

173

RIS-M-2426 RESOLUTION IN DIFFRACTION  

E-print Network

RISÃ?-M-2426 RESOLUTION IN DIFFRACTION An Outline of the Method of Conjugate Diameters. Lecture-plane resolution of a diffraction apparatus is discussed in the Gaussian approximation. This approximation with the general problem of resolution in a diffraction experiment. The approach taken here builds on the method

174

A resolution of the cosmic Lithium problem  

E-print Network

In 1982, Monique and Francois Spite discovered that the 7Li abundance in the atmosphere of old metal-poor dwarf stars in the galactic halo was independent of metallicity and temperature. Since then, 7Li abundance in the Universe has become a subject of intrigue, because there is less of it in Population II dwarf stars (by a factor of 3) than standard big bang nucleosynthesis predicts. Here we show how quark-novae (QNe) occurring in the wake of Pop. III stars, can elegantly produce an A(Li) ~ 2.2 Lithium plateau in Pop. II (low-mass) stars formed in the pristine cloud swept up by the mixed SN+QN ejecta. We also find an increase in the scatter as well as an eventual drop in A(Li) below the Spite plateau values for very low metallicity ([Fe/H] < -3) in excellent agreement with observations. We propose a solution to the discrepancy between the Big Bang Nucleosynthesis 7Li abundance and the Spite plateau and list some implications and predictions of our model.

Rachid Ouyed

2014-02-20

175

A combinational theory for maintenance of sex  

PubMed Central

Sexual reproduction implies high costs, but it is difficult to give evidence for evolutionary advantages that would explain the predominance of meiotic sex in eukaryotes. A combinational theory discussing evolution, maintenance and loss of sex may resolve the problem. The main function of sex is the restoration of DNA and consequently a higher quality of offspring. Recombination at meiosis evolved, perhaps, as a repair mechanism of DNA strand damages. This mechanism is most efficient for DNA restoration in multicellular eukaryotes, because the initial cell starts with a re-optimized genome, which is passed to all the daughter cells. Meiosis acts also as creator of variation in haploid stages, in which selection can purge most efficiently deleterious mutations. A prolonged diploid phase buffers the effects of deleterious recessive alleles as well as epigenetic defects and is thus optimal for prolonged growth periods. For complex multicellular organisms, the main advantage of sexuality is thus the alternation of diploid and haploid stages, combining advantages of both. A loss of sex is constrained by several, partly group-specific, developmental features. Hybridization may trigger shifts from sexual to asexual reproduction, but crossing barriers of the parental sexual species limit this process. For the concerted break-up of meiosis-outcrossing cycles plus silencing of secondary features, various group-specific changes in the regulatory system may be required. An establishment of asexuals requires special functional modifications and environmental opportunities. Costs for maintenance of meiotic sex are consequently lower than a shift to asexual reproduction. PMID:19623209

Hörandl, E

2010-01-01

176

Checklist for School Maintenance Surveys.  

ERIC Educational Resources Information Center

This document is a simple 34-category checklist to be used by technicians conducting maintenance surveys. Categories includes: roadways & parking lots; site appearance; site utilities; exterior appearance; playground equipment; exterior structural conditions; gutters and downspouts; windows and caulking; sidewalks; entryways and exit doors; roof…

Maryland State Dept. of Education, Baltimore.

177

Operational and maintenance data collection  

Microsoft Academic Search

This article presents an effort to collect operational and maintenance data on 240 power generation, power distribution and heating, ventilation, and air conditioning (HVAC) items, including gas turbine generators, diesel engine generators, electrical switchgear, cables, circuit breakers, boilers, piping, valves, pumps, motors, and chillers. The information collected in this study will be useful in determining site reliability or availability. The

Peyton Hale; Robert Arno

2009-01-01

178

Building Maintenance. Student Learning Guide.  

ERIC Educational Resources Information Center

This student learning guide contains one module for completing a course in building maintenance. It is designed especially for use in secondary schools in Palm Beach County, Florida. The module covers one task, and consists of a purpose, performance objective, enabling objectives, learning activities keyed to resources, information sheets, student…

Palm Beach County Board of Public Instruction, West Palm Beach, FL.

179

Organization, Information, Maintenance Jrme Denis  

E-print Network

Organization, Information, Maintenance Jérôme Denis LTCI (UMR5141) CNRS - Telecom Paris Association, Boston : United States (2011)" #12;Information, inscription and stability In organization studies objects of this perspective on materiality in organizations is information and its enactment: inscriptions

Paris-Sud XI, Université de

180

Focus Article Maintenance and differentiation  

E-print Network

-renewable, multipotent neural stem cells (NSCs) that are responsible for neurogenesis and plasticity in specific regions-renewal and the multipotent state of these cells. This intricate and well-tuned signaling network regulates the tranFocus Article Maintenance and differentiation of neural stem cells Katlin B. Massirer,1 Cassiano

Bellugi, Ursula

181

Maintenance Sessions Prolong Cigarette Abstinence.  

ERIC Educational Resources Information Center

Recent smoking treatment programs have shifted emphasis from initial cessation rates to long-term abstinence, with aversion therapy and coping response training having had the most success. A smoking cessation treatment consisting of rapid smoking and behavioral counseling was supplemented with two maintenance treatments. After completing the…

Brandon, Thomas H.; And Others

182

Avionics Maintenance Technology Program Guide.  

ERIC Educational Resources Information Center

This program guide presents the avionics maintenance technology curriculum for technical institutes in Georgia. The general information section contains the following for both the diploma program and the associate degree program: purpose and objectives; program description, including admissions, typical job titles, and accreditation and…

Georgia Univ., Athens. Dept. of Vocational Education.

183

Hornet maintenance [aircraft system management  

Microsoft Academic Search

A step toward life cycle cost reduction was the introduction of a Flight Incident Recording and Aircraft Monitoring Set (FIRAMS) in the F\\/A-18 Hornet. FIRAMS provides onboard nonvolatile storage of operational flight information and maintenance parameters. It also integrates fuel and engine displays and performs the fuel gaging and transfer functions. FIRAMS also promotes the concept of using onboard computers

H. A. Chase

1989-01-01

184

Afrikaans Language Maintenance in Australia  

ERIC Educational Resources Information Center

Changes in the political climate in the home country have resulted in the emigration of South Africans to English speaking countries such as Britain, Canada, Australia and New Zealand. Despite the scale of movement of the South African population, language maintenance in these diasporic contexts has received little consideration. This paper…

Hatoss, Aniko; Starks, Donna; van Rensburg, Henriette Janse

2011-01-01

185

Insomnia in maintenance haemodialysis patients  

Microsoft Academic Search

Background. Studies in the last 15 years have shown a high prevalence of sleep disorders in maintenance haemodialysis (HD) patients. Methods. To investigate whether the new technical and therapeutic advances of the last decade have had a positive impact on sleep disturbances in HD patients: 694 patients (384 males, 310 females) were surveyed using a specific questionnaire; their clinical, lifestyle

Massimo Sabbatini; Bruno Minale; Anna Crispo; Antonio Pisani; Annalisa Ragosta; Raffaela Esposito; Antonio Cesaro; Bruno Cianciaruso; Vittorio E. Andreucci

2002-01-01

186

Mother Tongue Maintenance: The Debate.  

ERIC Educational Resources Information Center

This debate presents two viewpoints on mother tongue maintenance: (1) that all individuals have a fundamental right to education in their native tongue, and that multilingual societies should actively promote multilingualism for all individuals; and (2) that the multitude of languages and rapid economic development in many countries calls for…

Skutnabb-Kangas, Tove; Sridhar, Kamal

1994-01-01

187

Maintenance Sourcebook: A Caretaker's Manual.  

ERIC Educational Resources Information Center

Discusses five areas of custodial maintenance caretaking in which facility managers need continual education: first aid and safety, hazardous materials, products and supplies, chemicals and their intended use, and cleaning procedures. Includes an annotated list of resources related to these areas. (EV)

Yeatts, G. Dewey; Stoverink, Al; Conry, Terry; Goulet, Nicole; Wilson, Joe; Ryan, Rob

2002-01-01

188

The Benefits of Health Maintenance.  

ERIC Educational Resources Information Center

The article focuses on the merits of a comprehensive, medically-oriented health maintenance/risk assessment program, and suggests that such conditions as heart disease, cancer, and arteriosclerosis can be prevented or postponed through proper nutrition, weight control, exercise, smoking cessation, and stress management. (Author/CB)

Rosenstein, Alan H.

1987-01-01

189

Video telehealth for weight maintenance of African-American women  

PubMed Central

Summary We evaluated the effect of home telehealth on weight maintenance after a group-based weight loss programme. The home telehealth intervention comprised telephone counselling and home Internet-enabled digital video recorders (DVRs) with three channels of video programmes. The video content provided reinforcement and support to promote problem solving, prevent relapse, and sustain motivation. Eighty-eight obese or overweight African-American women were randomized to receive monthly telephone counselling (control) or the home telehealth intervention. The weight change during maintenance was not significant in either group (0.6 kg in the intervention group, 0.0 kg in the control group), and there was no significant difference between them. Changes in diet, physical activity, social support and self-efficacy during the maintenance period did not differ significantly between groups. DVR use was low: during the intervention, the number of valid DVR viewings ranged from zero to 42 per person. DVR use was positively associated with previous attendance at the weight loss classes. Home video-based telehealth is a new method of delivering a weight loss maintenance intervention to African-American women. It had no effect on weight maintenance in the present study. PMID:24163236

Gerber, Ben S; Schiffer, Linda; Brown, Allison A; Berbaum, Michael L; Rimmer, James H; Braunschweig, Carol L; Fitzgibbon, Marian L

2013-01-01

190

Implementation of an agile maintenance mechanic assignment methodology  

NASA Astrophysics Data System (ADS)

The objective of this research was to develop a decision support system (DSS) to study the impact of introducing new equipment into a medical apparel plant from a maintenance organizational structure perspective. This system will enable the company to determine if their capacity is sufficient to meet current maintenance challenges. The DSS contains two database sets that describe equipment and maintenance resource profiles. The equipment profile specifies data such as mean time to failures, mean time to repairs, and minimum mechanic skill level required to fix each machine group. Similarly, maintenance-resource profile reports information about the mechanic staff, such as number and type of certifications received, education level, and experience. The DSS will then use this information to minimize machine downtime by assigning the highest skilled mechanics to machines with higher complexity and product value. A modified version of the simplex method, the transportation problem, was used to perform the optimization. The DSS was built using the Visual Basic for Applications (VBA) language contained in the Microsoft Excel environment. A case study was developed from current existing data. The analysis consisted of forty-two machine groups and six mechanic categories with ten skill levels. Results showed that only 56% of the mechanic workforce was utilized. Thus, the company had available resources for meeting future maintenance requirements.

Jimenez, Jesus A.; Quintana, Rolando

2000-10-01

191

Studying Thermoelectric Oxides using High-Resolution Scanning Transmission Electron Figure 4: a) Atomic resolution Z-  

E-print Network

Studying Thermoelectric Oxides using High-Resolution Scanning Transmission Electron Microscopy 0 the environmental impact, and deliver energy continuously, such as thermo-electric power generation, have often been overlooked. Thermo-electric (TE) power applications offer a potentially cheap, pollution- and maintenance

Ben-Arie, Jezekiel

192

Tutoring electronic troubleshooting in a simulated maintenance work environment  

NASA Technical Reports Server (NTRS)

A series of intelligent tutoring systems, or intelligent maintenance simulators, is being developed based on expert and novice problem solving data. A graded series of authentic troubleshooting problems provides the curriculum, and adaptive instructional treatments foster active learning in trainees who engage in extensive fault isolation practice and thus in conditionalizing what they know. A proof of concept training study involving human tutoring was conducted as a precursor to the computer tutors to assess this integrated, problem based approach to task analysis and instruction. Statistically significant improvements in apprentice technicians' troubleshooting efficiency were achieved after approximately six hours of training.

Gott, Sherrie P.

1987-01-01

193

Abrasion resistant valves cut platform maintenance cost  

SciTech Connect

Shell Exploration and Production, operator of Brent field in the UK North Sea, turned to Anglo-US valve maker Serck Audco Valves for help in solving persistent valve maintenance problems. Brent Charlie platform was selected as a test site for the supplier`s new line of abrasion-resistant valves. The most common failure cause is abrasion by solids in the line fluid, particularly sand, which damages even stainless steel and Duplex valve seats, creating leak paths which prevent valve sealing. Serck Audco manufacturers the Super-H all-metal pressure-balanced plug valve, which has proved particularly resistant to erosion in some of the world`s harshest operating environments. The paper describes the valve`s extra abrasion resistance and the Brent Charlie test.

NONE

1997-02-01

194

Cost Analysis of Two-Dissimilar-Unit Cold Standby System with three States and Preventive Maintenance Using Linear First Order Differential Equations  

Microsoft Academic Search

Problem statement: Several researchers have studied the reliability behavior of a three state systems, but no attention was paid to the reliability evaluation due to preventive maintenance. The better maintenance of the system originates better reliability. Also, standby support increases the reliability of the system. Approach: Determine the efficacy of preventive maintenance on the reliability and performance of the system.

M. Y. Haggag

2009-01-01

195

Maintenance of defibrillators in a state of readiness.  

PubMed

Since 1984, the US Food and Drug Administration (FDA) has utilized the Medical Device Reporting system as a mechanism for reporting adverse incidents associated with the use of medical devices, including external defibrillators. The frequency and content of these reports prompted an FDA-conducted five-state study of defibrillator-user training and maintenance practices for both devices and batteries. The study also included inspection and testing of defibrillators and batteries to assess their state of maintenance. A detailed review of the reports and of the five-state data confirmed that in the majority of cases, adverse incidents were related to improper defibrillator operation and maintenance, prompting the FDA Center for Devices and Radiological Health to launch an educational effort directed toward those who operate and maintain defibrillators. Proper maintenance of batteries (both nickel-cadmium and sealed lead-acid) was a major component of the educational thrust, because battery failure was identified as a recurrent and preventable problem. In an effort to correct the diverse types of incidents being reported, checklists were developed by the FDA for both manual and automated defibrillators. The checklists are designed to cover the spectrum of reported problems related to both device and user. The advent of more stringent FDA adverse incident-reporting regulations, coupled with increased use of defibrillators in diverse settings with varying usage frequencies, would seem to give a major impetus to the regular use of these checklists wherever defibrillators are employed. PMID:8434829

White, R D

1993-02-01

196

18 CFR 367.81 - Maintenance.  

Code of Federal Regulations, 2010 CFR

...GAS ACT Operating Expense Instructions § 367.81 Maintenance...provided in operating expense instruction in § 367.82. (d) This...following items: (1) Direct field supervision of maintenance... Service Company Property Instruction in §...

2010-04-01

197

18 CFR 367.81 - Maintenance.  

Code of Federal Regulations, 2014 CFR

...GAS ACT Operating Expense Instructions § 367.81 Maintenance...provided in operating expense instruction in § 367.82. (d) This...following items: (1) Direct field supervision of maintenance... Service Company Property Instruction in §...

2014-04-01

198

Maintenance cost studies of present aircraft subsystems  

E-print Network

This report describes two detailed studies of actual maintenance costs for present transport aircraft. The first part describes maintenance costs for jet transport aircraft broken down into subsystem costs according to an ...

Pearlman, Chaim Herman Shalom

1966-01-01

199

The Evidence Regarding Maintenance Tocolysis  

PubMed Central

Preterm delivery is a public health issue of major proportion. More than 12% of deliveries in the United States that occur at less than 37 weeks gestation preterm labor (PTL) represents the largest single reason for preterm birth (PTB). Attempts to prevent PTB have been unsuccessful. This paper of maintenance tocolytic therapy will examine the efficacy and safety of the drugs, both oral and subcutaneous, which have been utilized for prolongation of pregnancy following successful arrest of a documented episode of acute preterm labor. The evidence for oral tocolytics as maintenance therapy as well as parenteral medications for such patients is offered. Finally, the effects in the United States of the Food and Drug Administration (FDA) action on such medications are reported. PMID:23577034

Elliott, John P.; Morrison, John C.

2013-01-01

200

Orifice meters operation and maintenance  

SciTech Connect

Accurate measurement is of utmost importance to all companies involved in the purchase or sale of natural gas. Orifice meters act as a cash register for the industry. Proper operation and maintenance of the orifice meter is essential to ensure that both producers and customers receive an accurate account on every delivery. The orifice meter was developed in the early 1900`s. They have become the industry standard for measurement of large volumes of natural gas.

Meredith, J.L. [Lone Star Gas Co., Dallas, TX (United States)

1995-12-01

201

A Ubiquitous Computing Environment for Aircraft Maintenance  

E-print Network

in the area of aircraft maintenance. Extensive requirements regarding quality, safety, and documentationA Ubiquitous Computing Environment for Aircraft Maintenance Matthias Lampe Department of Computer as well as high costs for having aircrafts idle during maintenance demand for an efficient execution

202

Institute for Software Technology Software Maintenance  

E-print Network

1 Institute for Software Technology Software Maintenance VU 3.0 WS 2006 Univ.Prof. Dr. Franz Wotawa Institut für Softwaretechnologie wotawa@ist.tugraz.at VU Software Maintenance 2Institute for Software Technology Wozu Software Maintenance? Meine Software ist immer korrekt! Keine Modifikationen. Nur neue

203

Truth Maintenance David McAllester \\Lambda  

E-print Network

Truth Maintenance David McAllester \\Lambda Massachusetts Institute of Technology Artificial.ai.mit.edu:/pub/dam/dam.bib. Abstract General purpose truth maintenance systems have re­ ceived considerable attention in the past few years. This paper discusses the functionality of truth maintenance systems and compares various existing

McAllester, David

204

Automatic elevator system for maintenance services  

Microsoft Academic Search

This work presents an electrically assisted automatic elevator system for maintenance of street lights. The system was installed in a public illumination maintenance truck. It consists of a telescopic column, a base structure, and a platform. The whole operation is monitored and controlled by a PLC. The system aims at reducing efforts in maintenance tasks as well as improving the

R. A. Roncolatto; N. W. Romanelli; O. Horikawa; A. Hirakawa; S. M. Amancio; M. Silverio

2006-01-01

205

Designing a scrubber for maintenance  

SciTech Connect

Under Round 4 of the U.S. Department of Energy`s (DOE) Clean Coal Technology program, New York State Electric & Gas Corporation (NYSEG), in partnership with Saarberg-Holter-Umwelttechnik (SHU), Consolidation Coal Company and Stebbins Engineering and Manufacturing Company, has retrofitted a formic acid enhanced forced oxidation wet limestone scrubber on Units I and 2 at the Milliken Steam Electric Station. Units I and 2 are 1950s vintage Combustion Engineering tangentially fired pulverized coal units, which are rated at nominal 150 MW each and operate in balanced draft mode. The Flue Gas Desulfurization (FGD) system for Unit 2 was placed into operation in January 1995 and the Unit I system in June 1995. The project incorporates several unique aspects: low pH operation; a ceramic tile-lined cocurrent/countercurrent, split module absorber; a wet stack supported on the roof of the FGD building; and closed loop, zero liquid discharge operation that produces commercial grade gypsum and calcium chloride brine. The project objectives include 98% SO{sub 2} removal efficiency while burning high sulfur coal, the production of marketable byproducts to minimize solid waste disposal, zero wastewater discharge, space-saving design, and minimization of maintenance requirements of a wet scrubber. The paper provides a brief overview of the project scrubber design relating to maintenance considerations. A discussion of the early results of the maintenance history is also provided. Repair techniques that have been developed and tested for ceramic tile lined modules are included. 1 fig.

Mahlmeister, M.E.; Baron, E.S. [New York State Electric and Gas Corp., Binghamton, NY (United States); Watts, J. [USDOE Pittsburgh Energy Technology Center, PA (United States)

1996-12-01

206

Vehicle Maintenance Policy Outline the policy regarding vehicle maintenance at University of Michigan (U-M).  

E-print Network

Vehicle Maintenance Policy Objective Outline the policy regarding vehicle maintenance at University of Michigan (U-M). Policy 1. All maintenance performed on U-M vehicles must be coordinated through Garage to repair their fleet vehicles. 2. U-M vehicles leased through Fleet Services include routine maintenance

Kirschner, Denise

207

Prediction of Equipment Maintenance Using Optimized Support Vector Machine  

Microsoft Academic Search

\\u000a Failure can be prevented in time by prediction of equipment maintenance so as to promote reliability only if failures can\\u000a be early predicted. Substantially, it can be boiled down to a pattern recognition problem. Recenty, support vector machine\\u000a (SVM) becomes a hot technique in this area. When using SVM, how to simultaneously obtain the optimal feature subset and SVM\\u000a parameters

Yi Zeng; Wei Jiang; Changan Zhu; Jianfeng Liu; Weibing Teng; Yidong Zhang

208

Operation and maintenance budgeting for commercial buildings in Hong Kong  

Microsoft Academic Search

The significance of whole?life costs for building operation and maintenance (O&M) is well known. The causes of ill?budgeted O&M resources, however, are often uncertain. An in?depth exploration of the problems with budgeting O&M works for commercial buildings in Hong Kong was carried out, based on interviews with building owners, management companies and O&M contractors. The practice of historical?based budgeting predominates

Joseph Hung Kit Lai

2010-01-01

209

Comparable Efficacy of Contingency Management for Cocaine Dependence Among African American, Hispanic, and White Methadone Maintenance Clients  

Microsoft Academic Search

Cocaine use is a significant problem among methadone maintenance clients. Contingency management (CM) is a reinforcement-based approach with demonstrated efficacy for reducing cocaine use. This study examines whether the efficacy of CM treatment for cocaine-dependent individuals receiving methadone maintenance for opioid dependence differs by ethnicity. Participants were 191 African American, Hispanic, and White cocaine-dependent methadone maintenance clients, randomly assigned to

Danielle Barry; Brendan Sullivan; Nancy M. Petry

2009-01-01

210

Research on the Maintenance Decision-Making of Cement Concrete Pavement Based on Preventive Maintenance  

Microsoft Academic Search

The cement concrete pavement maintenance decision-making model has been proposed, by analyzing the formation and development characteristics of pavement diseases and considering the actual maintenance in Hunan Expressway. The maintenance decision-making tree and the decision-making progress have been established in order to realize the purpose of rational distribution of maintenance funds and improve maintenance quality, under the thought of preventive

Jian Zhao; Jia Xu

2009-01-01

211

High resolution telescope  

DOEpatents

A large effective-aperture, low-cost optical telescope with diffraction-limited resolution enables ground-based observation of near-earth space objects. The telescope has a non-redundant, thinned-aperture array in a center-mount, single-structure space frame. It employs speckle interferometric imaging to achieve diffraction-limited resolution. The signal-to-noise ratio problem is mitigated by moving the wavelength of operation to the near-IR, and the image is sensed by a Silicon CCD. The steerable, single-structure array presents a constant pupil. The center-mount, radar-like mount enables low-earth orbit space objects to be tracked as well as increases stiffness of the space frame. In the preferred embodiment, the array has elemental telescopes with subaperture of 2.1 m in a circle-of-nine configuration. The telescope array has an effective aperture of 12 m which provides a diffraction-limited resolution of 0.02 arc seconds. Pathlength matching of the telescope array is maintained by an electro-optical system employing laser metrology. Speckle imaging relaxes pathlength matching tolerance by one order of magnitude as compared to phased arrays. Many features of the telescope contribute to substantial reduction in costs. These include eliminating the conventional protective dome and reducing on-site construction activites. The cost of the telescope scales with the first power of the aperture rather than its third power as in conventional telescopes.

Massie, Norbert A. (San Ramon, CA); Oster, Yale (Danville, CA)

1992-01-01

212

[The "induction-maintenance" strategy].  

PubMed

The strategy of induction-maintenance therapy with lopinavir-ritonavir (LPV7r) consists of initiating antiretroviral therapy in a treatment-naïve patient with two nucleosides plus LPV/r. When the patient has achieved an undetectable HIV RNA viral load of < 50 copies/mL for a specified time period, the nucleosides are withdrawn and the patient continues to receive antiretroviral therapy with LPV/r monotherapy. The induction-maintenance strategy with LPV/r has been analyzed in the M03-613 clinical trial. In this trial, antiretroviral-naïve patients were randomized to receive zidovudine/lamivudine plus LPV/r (n = 104) or efavirenz (n = 51). In patients randomized to receive LPV/r who achieved an HIV RNA viral load of < 50 copies/mL for 3 consecutive months, nucleoside therapy was suspended. In an intention-to-treat analysis (missing equals failure), 60% of the patients randomized to receive LPV/r and 63% of those randomized to receive efavirenz maintained an HIV RNA viral load of < 50 copies/mL at 96 weeks of follow-up (p = 0.73; 95% confidence interval for the difference -19% to 13%). Moreover, this study showed that patients randomized to LPV/r experienced less lipoatrophy than those randomized to efavirenz. The M03-613 trial suggests that the induction-maintenance strategy with LPV/r is safe in most patients. However, rates of virological efficacy are lower than those achieved with the simplification strategy. Moreover, this trial demonstrates that LPV/r monotherapy may have major benefits in peripheral fat preservation. PMID:19572438

Arribas López, José R

2008-12-01

213

Reconcile: A Coreference Resolution Research Platform  

SciTech Connect

Despite the availability of standard data sets and metrics, approaches to the problem of noun phrase coreference resolution are hard to compare empirically due to the different evaluation setting stemming, in part, from the lack of comprehensive coreference resolution research platforms. In this tech report we present Reconcile, a coreference resolution research platform that aims to facilitate the implementation of new approaches to coreference resolution as well as the comparison of existing approaches. We discuss Reconcile's architecture and give results of running Reconcile on six data sets using four evaluation metrics, showing that Reconcile's performance is comparable to state-of-the-art systems in coreference resolution.

Stoyanov, V; Cardie, C; Gilbert, N; Riloff, E; Buttler, D; Hysom, D

2009-10-29

214

Multivariate curve resolution in liquid chromatography  

SciTech Connect

Self-modeling curve resolution has been shown to allow resolution of two co-eluting chromatographic peaks without requiring any assumption of an underlying peak shape. The subsequent problem of quantitation of these co-eluting peaks is limited by both the chromatographic resolution (separation in time and difference in elution profile) and by the degree of spectral uniqueness. An experimental system of two water-soluble vitamins has been used to examine the effects of varying chromatographic resolution on the quantitative accuracy of the curve resolution method.

Osten, D.W.; Kowalski, B.R.

1983-12-01

215

Methodology for minimizing maintenance costs  

SciTech Connect

Research conducted in the case study of a large applications system shows that the two primary causes of high maintenance costs are: the frequency of user-requested changes to software; and the psychological complexity of the software. A tool kit is suggested which, when applied to the design of new systems or rewrites, will produce systems which users are less likely to need changed, and will contribute to the reduction of psychological complexity of code, making it easier to change when necessary. The tool kit is easy to use, can be applied to large or small systems in any language on any equipment, and requires no purchase of hardware or software.

Brice, L.; Connell, J.

1983-01-01

216

Engineering Technology: Electronic Maintenance Engineer  

NSDL National Science Digital Library

In this video adapted from Pathways to Technology, youâ??ll learn about the role of an electronic maintenance technician, and see how this important position keeps the machines in a factory moving. Community college graduate Brad Richardson always liked taking things apart to see how they work, and his job at Tupperware gives him that satisfaction. Brad describes what brought him to study engineering, and what he does in his career. The video runs 3:03 and is accompanied by a background essay, standards alignment, and discussion questions. Users who sign up for a free account can save the resource and download the video as well.

217

Index : A Rule Based Expert System For Computer Network Maintenance  

NASA Astrophysics Data System (ADS)

Communications is an expert intensive discipline. The application of expert systems for maintenance of large and complex networks, mainly as an aid in trouble shooting, can simplify the task of network management. The important steps involved in troubleshooting are fault detection, fault reporting, fault interpretation and fault isolation. At present, Network Maintenance Facilities are capable of detecting and reporting the faults to network personnel. Fault interpretation refers to the next step in the process, which involves coming up with reasons for the failure. Fault interpretation can be characterized in two ways. First, it involves such a diversity of facts that it is difficult to predict. Secondly, it embodies a wealth of knowledge in the form of network management personnel. The application of expert systems in these interpretive tasks is an important step towards automation of network maintenance. In this paper, INDEX (Intelligent Network Diagnosis Expediter), a rule based production system for computer network alarm interpretation is described. It acts as an intelligent filter for people analyzing network alarms. INDEX analyzes the alarms in the network and identifies proper maintenance action to be taken.The important feature of this production system is that it is data driven. Working memory is the principal data repository of production systems and its contents represent the current state of the problem. Control is based upon which productions match the constantly changing working memory elements. Implementation of the prototype is in OPS83. Major issues in rule based system development such as rule base organization, implementation and efficiency are discussed.

Chaganty, Srinivas; Pitchai, Anandhi; Morgan, Thomas W.

1988-03-01

218

Optimizing expressway maintenance planning by coupling ant algorithm and geography information system transportation in Hubei province, China  

Microsoft Academic Search

Highway maintenance scheduling is a complex optimization problem and imposes a challenge for GIS-T research. In this paper, a new approach was put forward to determining the optimal set of alternatives for highway infrastructure facilities by using ant colony algorithm and GIS. In the proposed approach, GIS was used to analyze traffic flux, toll and maintenance time of each highway

Hongga Li; Xiaoxia Huang; Quan Feng

2011-01-01

219

Scheduling Jobs and a Variable Maintenance on a Single Machine with Common Due-Date Assignment  

PubMed Central

We investigate a common due-date assignment scheduling problem with a variable maintenance on a single machine. The goal is to minimize the total earliness, tardiness, and due-date cost. We derive some properties on an optimal solution for our problem. For a special case with identical jobs we propose an optimal polynomial time algorithm followed by a numerical example. PMID:25147861

Wan, Long

2014-01-01

220

Maintenance dialysis in developing countries.  

PubMed

Patients with end-stage renal disease require renal replacement therapy with maintenance hemodialysis or chronic peritoneal dialysis while awaiting transplantation. In addition to economic issues and limited state funding for advanced health care, the lack of trained medical personnel contributes to scarce dialysis facilities for children in developing countries. The establishment and operation of a hemodialysis unit with multidisciplinary facilities is both cost- and labor-intensive. Hemodialysis is usually carried out three times a week in a hospital setting and affects the curricular and extracurricular activities of the patient. Chronic ambulatory or cyclic peritoneal dialysis is technically simpler and allows better nutrition and growth, but is expensive for the majority of patients who must pay out of their own pocket. Multiple initiatives to enhance the training of pediatricians and nurses in skills related to initiating and managing patients on maintenance dialysis have resulted in the improved survival of children with end-stage renal disease. Support from state governments and philanthropic institutions have helped in establishing pediatric nephrology units that are equipped to provide renal replacement therapy for children. PMID:24469439

Sinha, Aditi; Bagga, Arvind

2015-02-01

221

A Minimum Delta V Orbit Maintenance Strategy for Low-Altitude Missions Using Burn Parameter Optimization  

NASA Technical Reports Server (NTRS)

Orbit maintenance is the series of burns performed during a mission to ensure the orbit satisfies mission constraints. Low-altitude missions often require non-trivial orbit maintenance Delta V due to sizable orbital perturbations and minimum altitude thresholds. A strategy is presented for minimizing this Delta V using impulsive burn parameter optimization. An initial estimate for the burn parameters is generated by considering a feasible solution to the orbit maintenance problem. An low-lunar orbit example demonstrates the Delta V savings from the feasible solution to the optimal solution. The strategy s extensibility to more complex missions is discussed, as well as the limitations of its use.

Brown, Aaron J.

2011-01-01

222

Scheduling jobs and maintenances in flexible job shop with a hybrid genetic algorithm  

Microsoft Academic Search

Most flexible job shop scheduling models assume that the machines are available all of the time. However, in most realistic\\u000a situations, machines may be unavailable due to maintenances, pre-schedules and so on. In this paper, we study the flexible\\u000a job shop scheduling problem with availability constraints. The availability constraints are non-fixed in that the completion\\u000a time of the maintenance tasks

Jie Gao; Mitsuo Gen; Linyan Sun

2006-01-01

223

Baclofen in the short-term maintenance treatment of benzodiazepine dependence.  

PubMed

Benzodiazepine (BZD) dependence is a significant public health problem. Apart from the long-term tapering doses of BZD, no others drugs are available for the maintenance treatment of BZD dependence. Baclofen has been used in alcohol and other drug dependence as long-term anti-craving agent. Since alcohol and BZD act through the GABA receptor, we attempted to study the effect of Baclofen as maintenance treatment in a series of five cases with BZD dependence. PMID:25540541

Shukla, Lekhansh; Kandasamy, Arun; Kesavan, Muralidharan; Benegal, Vivek

2014-11-01

224

Baclofen in the short-term maintenance treatment of benzodiazepine dependence  

PubMed Central

Benzodiazepine (BZD) dependence is a significant public health problem. Apart from the long-term tapering doses of BZD, no others drugs are available for the maintenance treatment of BZD dependence. Baclofen has been used in alcohol and other drug dependence as long-term anti-craving agent. Since alcohol and BZD act through the GABA receptor, we attempted to study the effect of Baclofen as maintenance treatment in a series of five cases with BZD dependence.

Shukla, Lekhansh; Kandasamy, Arun; Kesavan, Muralidharan; Benegal, Vivek

2014-01-01

225

PFP MICON maintenance manual. Revision 1  

SciTech Connect

This manual covers the use of maintenance displays, maintenance procedures, system alarms and common system failures. This manual is intended to supplement the MICON maintenance training not replace it. It also assumes that the user is familiar with the normal operation of the MICON A/S system. The MICON system is a distributed control computer and, among other things, controls the HVAC system for the Plutonium Finishing Plant.

Silvan, G.R.

1995-01-25

226

Estimating Maintenance Demands Of A Space Station  

NASA Technical Reports Server (NTRS)

RENEW computer program simulates maintenance events and estimates data pertinent to maintenance demands. Developed in support of Space Station Freedom Program (SSFP) Work Package 4. Uses data on reliability and maintainability (R&M) as well as logistical data to estimate both average and time-dependent maintenance demands. Estimates failure and repair times by use of Monte Carlo simulations. Written in BASIC and Assembly language.

Bream, B. L.

1995-01-01

227

FAA Safety Resources for Aviation Maintenance Technicians  

NSDL National Science Digital Library

Brought to you by the FAA Safety Team, the aviation maintenance technician (AMT) section of the Safety Team�s digital library offers videos, power point presentations, pamphlets, and articles on topics such as runway safety and maintenance for aircraft owners. While the number of resources in the aviation maintenance technician section of the digital library may be low, the resources themselves are informative and would be valuable to instructors and students concerned with Aviation Safety.

2007-02-24

228

Preventive maintenance program uses ultrasonic detection  

SciTech Connect

An active policy preventive maintenance requires the timely replacement of worn parts, which, in turn, means an accurate system for tracking wear. The benefits of such a well-managed preventive maintenance plan are fairly obvious: timely repairs extend the life of equipment, ensure it performs at its rated capacity, and reduce downtime. The preventive maintenance program of Chevron USA's oil field at Snyder, Tex., could well be a model for the industry, and ultrasonic inspection is an important part of their procedures.

Feit, E.

1988-02-01

229

Crafting Elegant Solutions: Strategies for Conflict Resolution.  

ERIC Educational Resources Information Center

The conflict-resolution technique of interpersonal negotiation involves five steps: (1) state your positive intentions; (2) define, analyze, and discuss the problem; (3) summarize progress; (4) explore alternative solutions; and (5) set a time for follow-up. (MLF)

Koch, Susan J.; Decker, Robert H.

1993-01-01

230

49 CFR 193.2639 - Maintenance records.  

Code of Federal Regulations, 2010 CFR

...Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY LIQUEFIED NATURAL GAS FACILITIES: FEDERAL SAFETY STANDARDS Maintenance § 193.2639...

2010-10-01

231

49 CFR 193.2605 - Maintenance procedures.  

Code of Federal Regulations, 2010 CFR

...Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY LIQUEFIED NATURAL GAS FACILITIES: FEDERAL SAFETY STANDARDS Maintenance § 193.2605...

2010-10-01

232

40 CFR 68.56 - Maintenance.  

Code of Federal Regulations, 2010 CFR

...Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CHEMICAL ACCIDENT PREVENTION PROVISIONS Program 2 Prevention Program § 68.56 Maintenance. (a) The owner or operator shall prepare and...

2010-07-01

233

PROFESSIONALIZATION: SELECTED ETHICAL ISSUES IN DISPUTE RESOLUTION  

Microsoft Academic Search

Several perplexing and controversial ethical issues confront professionals in the field of dispute resolution. Recognizing the need to address these contemporary problems, the Ethics Committee of the Society of Professionals in Dispute Resolution (SPIDR) has been considering several issues in depth over the past year. This article discusses the topics under consideration by the Ethics Committee: neutral confidentiality, certification and

LINDA I. HAY; CAROL M. CARNEVALE; ANTHONY V. SINICROPI

1984-01-01

234

Need telomere maintenance? Call 911  

PubMed Central

"Natura non facit saltum" (nature makes no leap) the Latins used to say, meaning that nature does not like discontinuities. Cells make no exception and indeed any discontinuity in the DNA double helix is promptly detected, triggering an alteration of cell proliferation and an attempt to repair. Yet, linear chromosomes bear DNA ends that are compatible with normal cell proliferation and they escape, under normal conditions, any repair. How telomeres, the chromosomes tips, achieve that is not fully understood. We recently observed that the Rad9/Hus1/Rad1 (911) complex, previously known for its functions in DNA metabolism and DNA damage responses, is constitutively associated with telomeres and plays an important role in their maintenance. Here, we summarize the available data and discuss the potential mechanisms of 911 action at telomeres. PMID:17229321

Francia, Sofia; Weiss, Robert S; d'Adda di Fagagna, Fabrizio

2007-01-01

235

Autonomous spacecraft maintenance study group  

NASA Technical Reports Server (NTRS)

A plan to incorporate autonomous spacecraft maintenance (ASM) capabilities into Air Force spacecraft by 1989 is outlined. It includes the successful operation of the spacecraft without ground operator intervention for extended periods of time. Mechanisms, along with a fault tolerant data processing system (including a nonvolatile backup memory) and an autonomous navigation capability, are needed to replace the routine servicing that is presently performed by the ground system. The state of the art fault handling capabilities of various spacecraft and computers are described, and a set conceptual design requirements needed to achieve ASM is established. Implementations for near term technology development needed for an ASM proof of concept demonstration by 1985, and a research agenda addressing long range academic research for an advanced ASM system for 1990s are established.

Marshall, M. H.; Low, G. D.

1981-01-01

236

Simulated maintenance a virtual reality  

SciTech Connect

The article describes potential applications of personal computer-based virtual reality software. The applications are being investigated by Atomic Energy of Canada Limited`s (AECL) Chalk River Laboratories for the Canadian deuterium-uranium (Candu) reactor. Objectives include: (1) reduction of outage duration and improved safety, (2) cost-effective and safe maintenance of equipment, (3) reduction of exposure times and identification of overexposure situations, (4) cost-effective training in a virtual control room simulator, (5) human factors evaluation of design interface, and (6) visualization of conceptual and detailed designs of critical nuclear field environments. A demonstration model of a typical reactor control room, the use of virtual reality in outage planning, and safety issues are outlined.

Lirvall, P. [Atomic Energy of Canada Limited`s Chalk River Lab., Ontario (Canada)

1995-10-01

237

The present status of maintenance strategies and the impact of maintenance on reliability  

Microsoft Academic Search

In this paper, the most frequently used power system maintenance strategies are reviewed. Distinction is made between strategies where maintenance consists of replacement by a new (or “good as new”) component and where it is represented by a less costly activity resulting in a limited improvement of the component's condition. Methods are also divided into categories where maintenance is performed

J. Endrenyi; S. Aboresheid; R. N. Allan; G. J. Anders; S. Asgarpoor; R. Billinton; N. Chowdhury; E. N. Dialynas; M. Fipper; R. H. Fletcher; C. Grigg; J. McCalley; S. Meliopoulos; T. C. Mielnik; P. Nitu; N. Rau; N. D. Reppen; L. Salvaderi; A. Schneider; Ch. Singh

2001-01-01

238

Vehicle Maintenance Procedure Outline the procedure for vehicle maintenance at University of Michigan (U-M).  

E-print Network

Vehicle Maintenance Procedure Objective Outline the procedure for vehicle maintenance at University of Michigan (U-M). Procedure 1. Your U-M vehicle has a mechanical and/or safety issue. 2. Contact Garage of the vehicle or if needed, have the vehicle towed to the maintenance facility. 4. If a loaner is needed while

Kirschner, Denise

239

Managing Highway Maintenance: Instructor's Guide: For Training in Managing Highway Maintenance.  

ERIC Educational Resources Information Center

The guide, intended for use by training officers and field instructors in highway maintenance management, contains five courses with a combined total of 17 units of instruction for maintenance engineers and supervisors. The curriculum incorporates management concepts and practices of State, county, and city maintenance agencies which have…

Federal Highway Administration (DOT), Washington, DC. Offices of Research and Development.

240

Relationship Maintenance on Facebook: Development of a Measure, Relationship to General Maintenance, and Relationship Satisfaction  

ERIC Educational Resources Information Center

Previous research indicates that the primary reason college students use Facebook is for relationship maintenance. The present study sought to determine the relationship between Facebook maintenance and general maintenance efforts in college student romantic relationships, as well as the impacts of such behaviors on the relationship. Survey data…

Dainton, Marianne

2013-01-01

241

Airline Fleet Maintenance: Trade-off Analysis of Alternate Aircraft Maintenance Approaches  

E-print Network

Airline Fleet Maintenance: Trade-off Analysis of Alternate Aircraft Maintenance Approaches Mike; for airlines to be profitable, companies must maximize passenger and cargo traffic flow, minimize expenses the profitability of airlines, including direct and indirect maintenance costs, increasing complexity of aircraft

242

47 CFR 80.1074 - Radio maintenance personnel for at-sea maintenance.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Radio maintenance personnel for at-sea maintenance...COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES STATIONS IN THE MARITIME SERVICES... General Provisions § 80.1074 Radio maintenance personnel for at-sea...

2010-10-01

243

Lexical ambiguity resolution  

SciTech Connect

This book collects much of the best research currently available on the problem of lexical ambiguity resolution in the processing of human language. When taken out of context, sentences are usually ambiguous. When actually uttered in a dialogue or written in text, these same sentences often have unique interpretations. The inherent ambiguity of isolated sentences, becomes obvious in the attempt to write a computer program to understand them. Different views have emerged on the nature of context and the mechanisms by which it directs unambiguous understanding of words and sentences. These perspectives are represented and discussed. Eighteen original papers from a valuable source book for cognitive scientists in AI, psycholinguistics, neuropsychology, or theoretical linguistics.

Small, S.; Cottrell, G.; Tanenhaus, M.

1987-01-01

244

Maintenance implementation plan for solid waste management  

SciTech Connect

This Maintenance Implementation Plan (MIP)was developed for implementation of the U.S. Department of Energy (DOE) Order 4330.4A, A Maintenance Implementation Program (DOE 1990) which has been replaced by 4330.4B (DOE 1994) at the Hanford Site SWM complex. It addresses maintenance functions associated with SWM, which includes the field operational group and the facilities operational group. An assessment of the existing maintenance programs for SWM was performed, and the results of this assessment were evaluated to determine corrective actions required to bring Solid Waste Maintenance into compliance with the order. The objective of this MIP is to provide baseline information for the control and execution of SWM Maintenance activities relative to the requirements of Order 4330.4B, Chapter II. (Nuclear Facilities) It also describes actions that are planned to achieve compliance. Section 2.0 of this MIP summarizes the mission, history, and future plans of SWM. Section 3.0 describes maintenance scope and requirements, and outlines the overall strategy (both near- term and long-term) for implementing improvements to the maintenance program. Specific elements of DOE Order 4330.4B are addressed in Section 4.0, including objectives of each element, a discussion of how SWM addresses these objectives, proposed improvements, and references to Westinghouse Hanford Company (Westinghouse Hanford) policies and procedures. Section 5.0 addresses deviations from policy requirements, and Section 6.0 presents the implementation schedule for planned improvements.

Reddinger, R.W., Westinghouse Hanford

1996-06-27

245

The Cognitive Behavioral Approach to Weight Maintenance.  

ERIC Educational Resources Information Center

The cognitive behavioral approach to weight maintenance assumes that obese people should be concerned with weight control rather than weight loss, and it embraces both the behavioral approach and a maintenance program which examines risks, value priorities, and the basic principles of weight loss/weight gain. The University of Maryland offers a…

Girdano, Dorothy Dusek

246

Computer Maintenance Technology. Suggested Basic Course Outline.  

ERIC Educational Resources Information Center

This competency-based basic course outline is designed for a two-year secondary program in computer maintenance technology. The first year is devoted to basic electricity and electronics, the second to the troubleshooting, maintenance, and service of microcomputers. (The repair section is based upon the Apple II computer, disc drive, monitor, and…

Texas A and M Univ., College Station. Vocational Instructional Services.

247

Modelling epigenetic information maintenance a Kappa tutorial  

E-print Network

Modelling epigenetic information maintenance a Kappa tutorial Jean Krivine1 , Vincent Danos2, that of the maintenance of epigenetic information. Our plan is to: - articulate in purely biological terms an epigenetic make progress in our plan. 1 Epigenetic repair Key epigenetic information is encoded in the human

Paris-Sud XI, Université de

248

Modelling epigenetic information maintenance a Kappa tutorial  

E-print Network

Modelling epigenetic information maintenance a Kappa tutorial Jean Krivine1 , Vincent Danos2, that of the maintenance of epigenetic information. Our plan is to: - propose in biological and informal terms a repair Epigenetic repair Epigenetic information is encoded in the human genome via a chemical modification of C

Danos, Vincent - Laboratoire Preuves, Programmes et Systèmes, Université Paris 7

249

Fair cost sharing of network maintenance  

Microsoft Academic Search

A network used by agents or players is considered. Nodes of the network are divided into some players and maintenance costs are allocated among the players. The more the player uses the network, the higher the player has to pay. We can give actual examples like railway networks or expressway networks. We propose a fair sharing method of the maintenance

Harunori Shishido

2003-01-01

250

Minor Maintenance. A Resource Manual for Custodians.  

ERIC Educational Resources Information Center

Areas of minor maintenance covered by this manual are--(1) electrical, (2) carpentry, (3) plumbing, (4) painting, and (5) masonry. Each area is defined, tools and equipment for maintenance are listed, and the job procedure is given. The description of electrical work also covers sources of electricity and power transmission. The description of…

Florida State Dept. of Education, Tallahassee.

251

Maintenance issues in outsourced software components  

Microsoft Academic Search

Software outsourcing is becoming a popular alternative in the software industry, and the evidence for the importance of assuring the quality of subcontractors' contributions is found in ISO 9000-3 Std and ISO\\/IEC 2001. There are risks and benefits of introducing subcontractors in the framework of the project. One of the major risks is the future maintenance difficulty. Reliable maintenance is

Rana Ejaz Ahmed

2004-01-01

252

Standardized Curriculum for General Industrial Maintenance Trades.  

ERIC Educational Resources Information Center

Standardized vocational education course titles and core contents for two courses in Mississippi are provided: general industrial maintenance trades I and II. The first course contains the following units: (1) orientation and leadership activities; (2) safety; (3) blueprint reading; (4) oxyacetylene cutting; (5) preventative maintenance; (6)…

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

253

Preventive Maintenance Guidelines for School Facilities.  

ERIC Educational Resources Information Center

This five-part manual, intended to increase the integrity and support the longevity of school facilities, provides easy-to-use preventive maintenance (PM) system guidelines. Part 1 outlines the special considerations of school maintenance as compared to other facilities. Part 2 establishes the basic components of a PM program and provides Work…

Maciha, John C.

254

Void Fraction Instrument operation and maintenance manual  

SciTech Connect

This Operations and Maintenance Manual (O&MM) addresses riser installation, equipment and personnel hazards, operating instructions, calibration, maintenance, removal, and other pertinent information necessary to safely operate and store the Void Fraction Instrument. Final decontamination and decommissioning of the Void Fraction Instrument are not covered in this document.

Borgonovi, G.; Stokes, T.I.; Pearce, K.L.; Martin, J.D.; Gimera, M.; Graves, D.B.

1994-09-01

255

DIPLOMARBEIT Fault Injection for Diagnosis and Maintenance  

E-print Network

DIPLOMARBEIT Fault Injection for Diagnosis and Maintenance in the Time-Triggered Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . #12;#12;Fault Injection for Diagnosis and Maintenance in the Time-Triggered Architecture view over the system, and analysis in order to assess the health state of the system. A fault injection

256

Test, Control and Monitor System maintenance plan  

NASA Technical Reports Server (NTRS)

The maintenance requirements for Test, Control, and Monitor System (TCMS) and the method for satisfying these requirements prior to First Need Date (FND) of the last TCMS set are described. The method for satisfying maintenance requirements following FND of the last TCMS set will be addressed by a revision to this plan. This maintenance plan serves as the basic planning document for maintenance of this equipment by the NASA Payloads Directorate (CM) and the Payload Ground Operations Contractor (PGOC) at KSC. The terms TCMS Operations and Maintenance (O&M), Payloads Logistics, TCMS Sustaining Engineering, Payload Communications, and Integrated Network Services refer to the appropriate NASA and PGOC organization. For the duration of their contract, the Core Electronic Contractor (CEC) will provide a Set Support Team (SST). One of the primary purposes of this team is to help NASA and PGOC operate and maintain TCMS. It is assumed that SST is an integral part of TCMS O&M. The purpose of this plan is to describe the maintenance concept for TCMS hardware and system software in order to facilitate activation, transition planning, and continuing operation. When software maintenance is mentioned in this plan, it refers to maintenance of TCMS system software.

Buehler, David P.; Lougheed, M. J.

1993-01-01

257

Software Testing and Maintenance 1 Regression Testing  

E-print Network

1 Software Testing and Maintenance 1 Regression Testing Introduction Test Selection Test Minimization Test Prioritization Summary Software Testing and Maintenance 2 What is it? Regression testing refers to the portion of the test cycle in which a program is tested to ensure that changes do not affect

Lei, Jeff Yu

258

Computer Applications To An Integrated Maintenance System.  

ERIC Educational Resources Information Center

A computerized system for maintenance management is described in terms of components--inventory control, scheduling of custodial work, preventive maintenance, new work and review and analysis. A flow chart for the system is presented showing the interrelation of the components and the details of each component, for example, 'New Work' includes…

Berry, John A.; Roberson, Robert

259

School Facilities Maintenance and Operations Manual.  

ERIC Educational Resources Information Center

Often a community's largest single investment is in its physical plants, including public school buildings and grounds. An essential factor in efficient school district operation is a well-organized, responsive plant operations and maintenance division. Maintenance has generally been defined as those services, activities, and procedures concerned…

Association of School Business Officials International, Reston, VA.

260

Nitrous Oxide Systems Maintenance in Clinical Areas  

E-print Network

/30/2013 Page 1 of 2 A. Purpose To maintain nitrous oxide delivery system in clinical areas operated/scope This policy applies to clinical locations where nitrous oxide is used as an anxiolytic or analgesic. It specifically speaks to maintenance of nitrous oxide delivery systems, preventive maintenance for house

Jia, Songtao

261

Results of Highway Maintenance Survey Prepared for  

E-print Network

Results of Highway Maintenance Survey Prepared for The SC Department of Transportation Prepared of Transportation In Cooperation with the United States Department of Transportation Federal Highway Administration #12;Results of Highway Maintenance Survey Executive Summary The use of surveys to elicit public

Almor, Amit

262

AUDIO-VISUAL AND MAINTENANCE SERVICES  

E-print Network

AUDIO-VISUAL AND MAINTENANCE SERVICES University Policy No: AD2510 Classification: Administration for the Use of Audio Visual Services PURPOSE 1.00 The purpose of this policy is to set out provisions for Audio Visual: services, equipment rental and maintenance on campus. DEFINITIONS For the purposes

Victoria, University of

263

Recommended lighting maintenance practices for Army installations  

Microsoft Academic Search

A well-maintained lighting system contributes to workforce efficiency and safety. This report recommends routine lighting maintenance practices (primarily relamping and fixture cleaning) for Army installations. The recommendations are derived from consideration of a comparative economic analysis, current maintenance practices in the military and nonmilitary sectors, and information obtained from industry trade and professional associations. Most common sources of interior and

Kedl

1987-01-01

264

Integration of maintenance strategies for improved asset reliability and availability  

Microsoft Academic Search

The simplicity and ruggedness of erstwhile ‘equipment sufficed maintenance’ used to revolve around preventive and run-to-failure methodology. With advancement in technology and arrival of complex machinery, the operational and maintenance philosophies have changed. Many maintenance management concepts, such as Reliability Centered Maintenance (RCM), Total Productive Maintenance (TPM), Total Quality Management (TQM) each having its own merits and demerits, have emerged.

N. K. K. Prasanna; Shakti Akula; Tushar N. Desai

2011-01-01

265

CleanFleet. Final report: Volume 3, vehicle maintenance and durability  

SciTech Connect

CleanFleet is a demonstration of panel vans operating on five alternative motorfuels in commercial package delivery operations in the South Coast Air Basin of California. The five alternative fuels are propane gas, compressed natural gas (CNG), California Phase 2 reformulated gasoline (RFG), methanol (M-85 with 15 percent RFG), and electricity. Data were gathered on in-use emissions, operations, and fleet economics. This volume of the final report summarizes the maintenance required on these vans from the time they were introduced into the demonstration (April through early November 1992) until the end of the demonstration in September 1994. The vans were used successfully in FedEx operations; but, to varying degrees, the alternative fuel vehicles required more maintenance than the unleaded gasoline control vehicles. The maintenance required was generally associated with the development state of the fuel-related systems. During the demonstration, no non-preventive maintenance was required on the highly developed fuel-related systems in any of the unleaded gasoline production vehicles used either as controls or as RFG test vehicles. The maintenance problems encountered with the less developed systems used in this demonstration may persist in the short term with vehicles featuring the same or similar systems. This means that fleet operators planning near-term acquisitions of vehicles incorporating such systems should consider the potential for similar problems when (1) selecting vendors and warranty provisions and (2) planning maintenance programs.

NONE

1995-12-01

266

Subpixel resolution from multiple images  

NASA Technical Reports Server (NTRS)

Multiple images taken from similar locations and under similar lighting conditions contain similar, but not identical, information. Slight differences in instrument orientation and position produces mismatches between the projected pixel grids. These mismatches ensure that any point on the ground is sampled differently in each image. If all the images can be registered with respect to each other to a small fraction of a pixel accuracy, then the information from the multiple images can be combined to increase linear resolution by roughly the square root of the number of images. In addition, the gray-scale resolution of the composite image is also improved. We describe methods for multiple image registration and combination, and discuss some of the problems encountered in developing and extending them. We display test results with 8:1 resolution enhancement, and Viking Orbiter imagery with 2:1 and 4:1 enhancements.

Cheeseman, Peter; Kanefsky, Rob; Stutz, John; Kraft, Richard

1994-01-01

267

KINOFORM LENSES - TOWARD NANOMETER RESOLUTION.  

SciTech Connect

While hard x-rays have wavelengths in the nanometer and sub-nanometer range, the ability to focus them is limited by the quality of sources and optics, and not by the wavelength. A few options, including reflective (mirrors), diffractive (zone plates) and refractive (CRL's) are available, each with their own limitations. Here we present our work with kinoform lenses which are refractive lenses with all material causing redundant 2{pi} phase shifts removed to reduce the absorption problems inherently limiting the resolution of refractive lenses. By stacking kinoform lenses together, the effective numerical aperture, and thus the focusing resolution, can be increased. The present status of kinoform lens fabrication and testing at Brookhaven is presented as well as future plans toward achieving nanometer resolution.

STEIN, A.; EVANS-LUTTERODT, K.; TAYLOR, A.

2004-10-23

268

Building an experience factory for maintenance  

NASA Technical Reports Server (NTRS)

This paper reports the preliminary results of a study of the software maintenance process in the Flight Dynamics Division (FDD) of the National Aeronautics and Space Administration/Goddard Space Flight Center (NASA/GSFC). This study is being conducted by the Software Engineering Laboratory (SEL), a research organization sponsored by the Software Engineering Branch of the FDD, which investigates the effectiveness of software engineering technologies when applied to the development of applications software. This software maintenance study began in October 1993 and is being conducted using the Quality Improvement Paradigm (QIP), a process improvement strategy based on three iterative steps: understanding, assessing, and packaging. The preliminary results represent the outcome of the understanding phase, during which SEL researchers characterized the maintenance environment, product, and process. Findings indicate that a combination of quantitative and qualitative analysis is effective for studying the software maintenance process, that additional measures should be collected for maintenance (as opposed to new development), and that characteristics such as effort, error rate, and productivity are best considered on a 'release' basis rather than on a project basis. The research thus far has documented some basic differences between new development and software maintenance. It lays the foundation for further application of the QIP to investigate means of improving the maintenance process and product in the FDD.

Valett, Jon D.; Condon, Steven E.; Briand, Lionel; Kim, Yong-Mi; Basili, Victor R.

1994-01-01

269

Maintenance scheduling for modular systems-models and algorithms  

E-print Network

Maintenance scheduling is an integral part of many complex systems. For instance, without effective maintenance scheduling, the combined effects of preventative and corrective maintenance can have severe impacts on the ...

Zarybnisky, Eric J. (Eric Jack), 1979-

2011-01-01

270

42 CFR 405.2470 - Reports and maintenance of records.  

Code of Federal Regulations, 2012 CFR

...false Reports and maintenance of records. 405...2470 Reports and maintenance of records. (a) Maintenance and availability...and containing the data required by CMS...ownership. (d) Collection of additional...

2012-10-01

271

42 CFR 405.2470 - Reports and maintenance of records.  

Code of Federal Regulations, 2011 CFR

...false Reports and maintenance of records. 405...2470 Reports and maintenance of records. (a) Maintenance and availability...and containing the data required by CMS...ownership. (d) Collection of additional...

2011-10-01

272

42 CFR 405.2470 - Reports and maintenance of records.  

Code of Federal Regulations, 2014 CFR

...false Reports and maintenance of records. 405...2470 Reports and maintenance of records. (a) Maintenance and availability...and containing the data required by CMS...ownership. (d) Collection of additional...

2014-10-01

273

42 CFR 405.2470 - Reports and maintenance of records.  

Code of Federal Regulations, 2013 CFR

...false Reports and maintenance of records. 405...2470 Reports and maintenance of records. (a) Maintenance and availability...and containing the data required by CMS...ownership. (d) Collection of additional...

2013-10-01

274

Enhancing Building Performance Through More Responsive Maintenance System  

E-print Network

costs more than its initial cost. The aim of this study is to improve maintenance processes by simulating the concept of multi-skilled technician to an existing maintenance process. Statistical data and maintenance process map of Saudi Consolidated...

Alsudairi, A. A.

2012-01-01

275

14 CFR 125.247 - Inspection programs and maintenance.  

Code of Federal Regulations, 2010 CFR

...false Inspection programs and maintenance. 125.247 Section 125.247 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION...PERSONS ON BOARD SUCH AIRCRAFT Maintenance § 125.247 Inspection programs and maintenance. (a)...

2010-01-01

276

30 CFR 212.51 - Records and files maintenance.  

Code of Federal Regulations, 2010 CFR

... 2010-07-01 false Records and files maintenance. 212.51 Section 212...MINERALS REVENUE MANAGEMENT RECORDS AND FILES MAINTENANCE Oil, Gas, and OCS Sulphur-General § 212.51 Records and files maintenance. (a)...

2010-07-01

277

31 CFR 202.7 - Maintenance of balances within authorizations.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Maintenance of balances within authorizations. 202.7 Section...GOVERNMENT 1 § 202.7 Maintenance of balances within authorizations. (a...are responsible for the maintenance of balances in such accounts within the limits...

2013-07-01

278

31 CFR 202.7 - Maintenance of balances within authorizations.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Maintenance of balances within authorizations. 202.7 Section...GOVERNMENT 1 § 202.7 Maintenance of balances within authorizations. (a...are responsible for the maintenance of balances in such accounts within the limits...

2011-07-01

279

31 CFR 202.7 - Maintenance of balances within authorizations.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 false Maintenance of balances within authorizations. 202.7 Section...GOVERNMENT 1 § 202.7 Maintenance of balances within authorizations. (a...are responsible for the maintenance of balances in such accounts within the limits...

2014-07-01

280

31 CFR 202.7 - Maintenance of balances within authorizations.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Maintenance of balances within authorizations. 202.7 Section...GOVERNMENT 1 § 202.7 Maintenance of balances within authorizations. (a...are responsible for the maintenance of balances in such accounts within the limits...

2012-07-01

281

31 CFR 202.7 - Maintenance of balances within authorizations.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Maintenance of balances within authorizations. 202.7 Section...GOVERNMENT 1 § 202.7 Maintenance of balances within authorizations. (a...are responsible for the maintenance of balances in such accounts within the limits...

2010-07-01

282

Small satellite debris catalog maintenance issues  

NASA Technical Reports Server (NTRS)

The United States Space Command (USSPACECOM) is a unified command of the Department of Defense, and one of its tasks is to detect, track, identify, and maintain a catalog of all man-made objects in Earth orbit. This task is called space surveillance, and the most important tool for space surveillance is the satellite catalog. The command's reasons for performing satellite catalog maintenance is presented. A satellite catalog is described, and small satellite-debris catalog-maintenance issues are identified. The underlying rationale is to describe the catalog maintenance services so that the members of the community can use them with assurance.

Jackson, Phoebe A.

1991-01-01

283

A Proposed Approach for Prioritizing Maintenance at NASA Centers  

NASA Technical Reports Server (NTRS)

The National Aeronautics and Space Administration (NASA) manages a vast array of infrastructure assets across ten National Centers with a worth of at least 30 billion dollars. Eighty percent of this infrastructure is greater than 40 years old and is in degraded condition. Maintenance budgets are typically less than one percent of current replacement value (CRV), much less than the 2-4% recommended by the National Research Council. The maintenance backlog was 2.55 billion dollars in FY10 and growing. NASA s annual budgets have flattened and are at risk of being reduced, so the problem is becoming even more difficult. NASA Centers utilize various means to prioritize and accomplish maintenance within available budgets, though data is suspect and processes are variable. This paper offers a structured means to prioritize maintenance based on mission criticality and facility performance (ability of the facility to deliver on its purpose). Mission alignment is assessed using the current timeframe Mission Dependence Index and a measure of facility alignment with the 2011 NASA Strategic Plan for the long-term perspective. Facility performance is assessed by combining specific findings from a structured facility condition assessment and an assessment of actual functional output. These are then combined in a matrix to identify the facilities most critical to mission and able to deliver services. The purpose of this approach is to provide the best benefits for the available funding. Additionally, this rationale can also be applied to the prioritization of investment (recapitalization) projects so that the ultimate customers of this paper, the senior infrastructure managers at each NASA Center, are better able to strategically manage their capabilities.

Dunn, Steven C.; Sawyer, Melvin H.

2013-01-01

284

Site Maintenance Plan: Part 2, Site Maintenance Action Plan for FY 1994  

SciTech Connect

This Fiscal Year (FY) 1994 Site Maintenance Action Plan (SMAP) is Part II of the Site Maintenance Plan, and has been written by Westinghouse Hanford Company (WHC) to outline the requirements stated in DOE Order 4330.4B, Maintenance Management Program, Chapter 1, Paragraph 3.3.1. The SMAP provides an annual status of maintenance initiatives completed and planned, a summary of performance indicators, a summary of maintenance backlog, a listing of real property and capital equipment maintenance cost estimates that were used to create the FY 1996 infrastructure and maintenance budget input, and a listing of proposed line item and general plant projects. Additionally, assumptions for various Site programs are listed to bring the Site Maintenance Plan into focus with overall Site activities. The primary mission at Hanford is to clean up the Site. In this cleanup process WHC will provide scientific and technological expertise to meet global needs, and partnership with stakeholders in the region to develop regional economic diversification. Other missions at the Hanford Site include energy research and development, and waste management and disposal activities. Their primary mission has a 30-year projected life span and will direct the shutting down and cleanup of defense production facilities and the Fast Flux Test Facility. This long-term mission requires continuous maintenance and in many instances, replacement of existing basic infrastructure, support facilities, and utilities. Without adequate maintenance and capital funding these infrastructure, support facilities, and utilities will continue to deteriorate causing an increase in backlogged work.

Fisk, E.L.

1994-06-01

285

Ordinances and Resolutions ORDINANCES, RESOLUTIONS AND REGULATIONS  

E-print Network

come into effect on the day on 27th October 2000. #12;Page 2.2 Ordinances and Resolutions III. DEGREE of its approval by Her Majesty in Council. II. AWARD OF POSTGRADUATE DIPLOMAS AND DEGREES Resolution) the degree of Doctor of Languages (D.Lang.), (c) the degree of Doctor of Philosophy in Arts, Divinity

Brierley, Andrew

286

Scheduling Planned Maintenance of Electrical Power Transmission Networks Using  

E-print Network

Scheduling Planned Maintenance of Electrical Power Transmission Networks Using Genetic Algorithms Technical Report: CSRP­97­26 10 November 1997 Abstract The maintenance of the electrical power transmission

Fernandez, Thomas

287

Maintenance accountability, jobs, and inventory control (MAJIC) program  

SciTech Connect

This document describes the operating procedures for the maintenance accountability, jobs, and inventory control (MAJIC) program for the Maintenance Management Department of the ORNL Instrumentation and Controls Division.

Adkisson, B.P.

1990-01-01

288

Resolution measurement for scanning electron microscopes  

NASA Astrophysics Data System (ADS)

The resolution performance of a scanning electron microscope (SEM) is a primary specification of the instrument. For a high-resolution SEM (HRSEM) equipped with a field emission gun (FEG), image resolutions of less than 2 nm are commonly claimed. Generally, both manufacturers and customers identify image resolution as the single most important performance criterion. It is traditionally determined with specimens such as gold islands on bulk carbon supports, where the minimum apparent separation of two islands is claimed as the resolution. This procedure is highly subjective since the spacings are not known independently. Dodson and Joy have pointed out the paradox implicit in this approach - that 'the resolution of a given instrument can be verified only after a better instrument is available to characterize the structure spacing.' By analogy to the now standard approach for high-resolution transmission electron microscopes (TEM's), Dodson and Joy investigated the use of Fourier transforms (FT) of high-resolution SEM images for measuring resolution. Problems encountered by Dodson and Joy included obtaining a specimen with structural detail over the required range of spatial frequencies, and practical aspects of performing the FT processing. While we hope and expect that such FT techniques will be developed in the future, we have explored a different route to a less subjective resolution test that was also prompted by TEM experience, and which directly addresses the paradox posed by Dodson and Joy.

Bentley, J.; Kenik, E. A.; Evans, N. D.

289

43 CFR 1610.5-4 - Maintenance.  

Code of Federal Regulations, 2012 CFR

...Public Lands (Continued) BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR GENERAL MANAGEMENT (1000) PLANNING, PROGRAMMING, BUDGETING Resource Management Planning § 1610.5-4 Maintenance. Resource management plans and supporting...

2012-10-01

290

Probabilistic Weather Forecasting for Winter Road Maintenance  

E-print Network

Probabilistic Weather Forecasting for Winter Road Maintenance Veronica J. Berrocal, Adrian E are needed. Currently, anti-icing decisions are usually based on deterministic weather forecasts. However. Starting with deterministic numerical weather predictions, they produce a joint predictive probability dis

Washington at Seattle, University of

291

40 CFR 86.1725-99 - Maintenance.  

Code of Federal Regulations, 2010 CFR

...this section. (d) When air conditioning SFTP exhaust emission tests...document that the vehicle's air conditioning system is operating properly...prior to testing. Required air conditioning system maintenance is...

2010-07-01

292

40 CFR 86.1725-99 - Maintenance.  

Code of Federal Regulations, 2013 CFR

...this section. (d) When air conditioning SFTP exhaust emission tests...document that the vehicle's air conditioning system is operating properly...prior to testing. Required air conditioning system maintenance is...

2013-07-01

293

40 CFR 86.1725-99 - Maintenance.  

Code of Federal Regulations, 2011 CFR

...this section. (d) When air conditioning SFTP exhaust emission tests...document that the vehicle's air conditioning system is operating properly...prior to testing. Required air conditioning system maintenance is...

2011-07-01

294

40 CFR 86.1725-99 - Maintenance.  

Code of Federal Regulations, 2012 CFR

...this section. (d) When air conditioning SFTP exhaust emission tests...document that the vehicle's air conditioning system is operating properly...prior to testing. Required air conditioning system maintenance is...

2012-07-01

295

Aircraft Electronics Maintenance Training Simulator. Curriculum Outlines.  

ERIC Educational Resources Information Center

Instructional materials are provided for nine courses in an aircraft electronics maintenance training program. Courses are as follows: aviation basic electricity, direct current and alternating current electronics, basic avionic installations, analog electronics, digital electronics, microcomputer electronics, radio communications, aircraft…

Blackhawk Technical Coll., Janesville, WI.

296

Lenalidomide Maintenance Therapy for Multiple Myeloma  

Cancer.gov

In this trial, researchers are exploring whether maintenance therapy with lenalidomide after single autologous stem cell transplantation can slow or prevent the return of multiple myeloma in patients who have undergone induction therapy.

297

40 CFR 63.1655 - Maintenance requirements.  

Code of Federal Regulations, 2010 CFR

...requirement to develop maintenance plans, the owner or operator may use the affected source's standard operating procedures (SOP) manual or other plan, provided the alternative plan meets the requirements of this paragraph and is made available for...

2010-07-01

298

40 CFR 63.1655 - Maintenance requirements.  

Code of Federal Regulations, 2011 CFR

...operator must develop and implement a written maintenance plan for each air pollution control device associated with submerged arc furnaces, metal oxygen refining processes, and crushing and screening operations subject to the provisions...

2011-07-01

299

40 CFR 63.1655 - Maintenance requirements.  

Code of Federal Regulations, 2014 CFR

...operator must develop and implement a written maintenance plan for each air pollution control device associated with submerged arc furnaces, metal oxygen refining processes, and crushing and screening operations subject to the provisions...

2014-07-01

300

40 CFR 63.1655 - Maintenance requirements.  

Code of Federal Regulations, 2013 CFR

...operator must develop and implement a written maintenance plan for each air pollution control device associated with submerged arc furnaces, metal oxygen refining processes, and crushing and screening operations subject to the provisions...

2013-07-01

301

40 CFR 63.1655 - Maintenance requirements.  

Code of Federal Regulations, 2012 CFR

...operator must develop and implement a written maintenance plan for each air pollution control device associated with submerged arc furnaces, metal oxygen refining processes, and crushing and screening operations subject to the provisions...

2012-07-01

302

40 CFR 86.098-25 - Maintenance.  

Code of Federal Regulations, 2010 CFR

...Engines, and for 1985 and Later Model Year New Gasoline Fueled, Natural Gas-Fueled, Liquefied Petroleum Gas-Fueled and Methanol-Fueled Heavy-Duty Vehicles § 86.098-25 Maintenance. (a) [Reserved] (b)(1)-(2) [Reserved]...

2010-07-01

303

A case model for predictive maintenance  

E-print Network

This project is to respond to a need by Varian Semiconductor Equipment Associates, Inc. (VSEA) to help predict failure of ion implanters. Predictive maintenance would help to reduce the unscheduled downtime of ion implanters, ...

Li, Jiawei, M. Eng. Massachusetts Institute of Technology

2008-01-01

304

Sound maintenance practices protect fan investments  

SciTech Connect

Since underground coal miners depend on axial fans, lack of maintenance could prove costly. A number of pre-emptive actions that can help keep fans running at optimal performance can also be taken. 2 photos.

Bauer, M.

2009-11-15

305

Balance Problems  

MedlinePLUS

... often, it could be a sign of a balance problem. Balance problems can make you feel unsteady or as ... fall-related injuries, such as hip fracture. Some balance problems are due to problems in the inner ...

306

Preventive maintenance, the key to increased productivity  

SciTech Connect

In order to increase availability of equipment and therefore increase productivity, a new Preventive Maintenance Program was developed at Martin County Coal Corporation. Over the course of the first two years of the program, software and the method of compiling input information was developed. As soon as the program was in motion an increase in equipment availability was realized. As the program progressed, overburden removal and coal production began an upward trend while maintenance cost began to drop.

Bradbury, P.; Beatty, B.

1982-12-01

307

Ground Software Maintenance Facility (GSMF) user's manual  

NASA Technical Reports Server (NTRS)

Instructions for the Ground Software Maintenance Facility (GSMF) system user is provided to operate the GSMF in all modes. The GSMF provides the resources for the Automatic Test Equipment (ATE) computer program maintenance (GCOS and GOAL). Applicable reference documents are listed. An operational overview and descriptions of the modes in terms of operator interface, options, equipment, material utilization, and operational procedures are contained. Test restart procedures are described. The GSMF documentation tree is presented including the user manual.

Aquila, V.; Derrig, D.; Griffith, G.

1986-01-01

308

Measuring the performance of maintenance service outsourcing.  

PubMed

The aims of this paper are (1) to identify the characteristics of maintenance service providers that directly impact maintenance service quality, using 18 independent covariables; (2) to quantify the change in risk these covariables present to service quality, measured in terms of equipment turnaround time (TAT). A survey was applied to every maintenance service provider (n = 19) for characterization purposes. The equipment inventory was characterized, and the TAT variable recorded and monitored for every work order of each service provider (N = 1,025). Finally, the research team conducted a statistical analysis to accomplish the research objectives. The results of this study offer strong empirical evidence that the most influential variables affecting the quality of maintenance service performance are the following: type of maintenance, availability of spare parts in the country, user training, technological complexity of the equipment, distance between the company and the hospital, and the number of maintenance visits performed by the company. The strength of the results obtained by the Cox model built are supported by the measure of the Rp,e(2) = 0.57 with a value of Rp,e= 0.75. Thus, the model explained 57% of the variation in equipment TAT, with moderate high positive correlation between the dependent variable (TAT) and independent variables. PMID:24328978

Cruz, Antonio Miguel; Rincon, Adriana Maria Rios; Haugan, Gregory L

2013-01-01

309

A performance improvement case study in aircraft maintenance and its implications for hazard identification.  

PubMed

Aircraft maintenance is a highly regulated, safety critical, complex and competitive industry. There is a need to develop innovative solutions to address process efficiency without compromising safety and quality. This paper presents the case that in order to improve a highly complex system such as aircraft maintenance, it is necessary to develop a comprehensive and ecologically valid model of the operational system, which represents not just what is meant to happen, but what normally happens. This model then provides the backdrop against which to change or improve the system. A performance report, the Blocker Report, specific to aircraft maintenance and related to the model was developed gathering data on anything that 'blocks' task or check performance. A Blocker Resolution Process was designed to resolve blockers and improve the current check system. Significant results were obtained for the company in the first trial and implications for safety management systems and hazard identification are discussed. Statement of Relevance: Aircraft maintenance is a safety critical, complex, competitive industry with a need to develop innovative solutions to address process and safety efficiency. This research addresses this through the development of a comprehensive and ecologically valid model of the system linked with a performance reporting and resolution system. PMID:20099178

Ward, Marie; McDonald, Nick; Morrison, Rabea; Gaynor, Des; Nugent, Tony

2010-02-01

310

A Decision Support System for Concrete Bridge Maintenance  

NASA Astrophysics Data System (ADS)

The maintenance of bridges as a key element in transportation infrastructure has become a major concern for asset managers and society due to increasing traffic volumes, deterioration of existing bridges and well-publicised bridge failures. A pivotal responsibility for asset managers in charge of bridge remediation is to identify the risks and assess the consequences of remediation programs to ensure that the decisions are transparent and lead to the lowest predicted losses in recognized constraint areas. The ranking of bridge remediation treatments can be quantitatively assessed using a weighted constraint approach to structure the otherwise ill-structured phases of problem definition, conceptualization and embodiment [1]. This Decision Support System helps asset managers in making the best decision with regards to financial limitations and other dominant constraints imposed upon the problem at hand. The risk management framework in this paper deals with the development of a quantitative intelligent decision support system for bridge maintenance which has the ability to provide a source for consistent decisions through selecting appropriate remediation treatments based upon cost, service life, product durability/sustainability, client preferences, legal and environmental constraints. Model verification and validation through industry case studies is ongoing.

Rashidi, Maria; Lemass, Brett; Gibson, Peter

2010-05-01

311

As aging takes its toll on America's infrastructure, the cost and maintenance  

E-print Network

the Gilbert, Cooper, W&W Steel Chair in civil engineering, has a highway data collection technology pavement survey technology. Wang's product already offers excellent data collection and analysis data to diagnose problems. Highway maintenance is a huge public investment of more than $40 billion

Piao, Daqing

312

Examining the Relationship Between Passenger Airline Aircraft Maintenance Outsourcing and Aircraft Safety  

Microsoft Academic Search

The problem addressed was the concern for aircraft safety rates as they relate to the rate of maintenance outsourcing. Data gathered from 14 passenger airlines: AirTran, Alaska, America West, American, Continental, Delta, Frontier, Hawaiian, JetBlue, Midwest, Northwest, Southwest, United, and USAir covered the years 1996 through 2008. A quantitative correlational design, utilizing Pearson's correlation coefficient, and the coefficient of determination

Kari L. Monaghan

2011-01-01

313

Trend curve optimal control model for highway pavement maintenance: Case study and evaluation  

Microsoft Academic Search

This paper presents a control theoretic dynamic model for optimizing the timing and intensity of major highway pavement maintenance actions. The solution procedure is demonstrated through a simple case study, and the worthiness as a problem-solving tool is discussed through a systematic evaluation of the solutions.

Koji Tsunokawa; Joseph L. Schofer

1994-01-01

314

Good School Maintenance. A Manual of Programs and Procedures for Buildings--Grounds--Equipment.  

ERIC Educational Resources Information Center

This guide provides a basic program for managers and supervisors responsible for the care of buildings, grounds, and equipment; provides the maintenance staff member with basic information and solutions to typical problems; and is intended to be used as a training tool and a reference source. The manual is divided into five categories. (1) "Basics…

Harroun, Jack T., Ed.

315

A Case Study: Implementing an Interactive Video Instruction System in Teaching Electronics and Industrial Maintenance.  

ERIC Educational Resources Information Center

A study examined the development and implementation of an interactive video instruction system for teaching electronics and industrial maintenance at the University of Tennessee. The specific purposes of the study were to document unusual problems that may be encountered when this new technology is implemented, suggest corrective actions, and…

Shipe, Ron; And Others

316

Antidepressant Treatment Patterns in a Novel Methadone Maintenance Clinic Targeting Young Adults  

Microsoft Academic Search

This observational study examined the antidepressant treatment patterns of a novel New York City methadone maintenance treatment program (MMTP), founded for the treatment of adolescents and now targeting young adults and older patients with special problems. The goal of the study was to investigate demographic or clinical characteristics that were associated with prescribing patterns, as well as whether antidepressant use

David W. Galarneau; Jedediah J. Teres; Andrew C. Leon; Dorothy Melia; Charles Lilly; Scott Kellogg; Elizabeth Khuri; Mary Jeanne Kreek

2006-01-01

317

[Development of a high resolution simultaneous microwave plasma torch spectrometer].  

PubMed

A unique high resolution simultaneous microwave plasma torch (MPT) atomic emission spectrometer was developed and studied preliminarily. Some advanced technologies were applied to the spectrometer, such as echelle grating, UV-intensified CCD array detector, adjustable microwave generator, and water cooling system for the generator, etc. The detection limits of the spectrometer for some elements were determined, the spectral resolution and pixel resolution of the spectrometer were calculated, and an analysis of a practical sample was carried out. The preliminary results demonstrate that such simultaneous spectrometer has advantages of saving sample and time, possessing high sensitivity and resolution, and low-cost for the purchase and maintenance. Taking analytical figures of merit into consideration, the high resolution simultaneous MPT spectrometer will have extended application areas and greater competition potential as compared with sequential MPT spectrometers. PMID:18260435

Jiang, Jie; Huan, Yan-Fu; Jin, Wei; Feng, Guo-Dong; Fei, Qiang; Cao, Yan-Bo; Jin, Qin-Han

2007-11-01

318

Integrated Exams System Course Maintenance (Assessments) Page 1 of 5  

E-print Network

Collection\\User Guides\\SSTU0081 Course Maintenance - Assessments.doc Guide to Assessments Background Data:\\Colin\\Exams\\BSc Data Collection\\User Guides\\SSTU0081 Course Maintenance - Assessments.doc 2.0 Maintenance of SubIntegrated Exams System ­­ Course Maintenance (Assessments) Page 1 of 5 G:\\Colin\\Exams\\BSc Data

Sussex, University of

319

Standardized Auditing and Surveillance of Aircraft Maintenance Operations  

Microsoft Academic Search

The safety and reliability of air transportation depends on minimizing inspection and maintenance errors that occur in the complex aircraft maintenance system. Significant efforts have been invested to investigate and track maintenance errors. However, these efforts are typically not preventative measures; rather they are reactive in nature: they focus on analyzing maintenance accidents and errors after their occurrence. There exists

Kunal Kapoor; Pallavi Dharwada; Nikhil Iyengar; Joel S. Greenstein; Anand K. Gramopadhye

320

MEDEMAS Medical Device Management and Maintenance System Architecture  

Microsoft Academic Search

In the proposed study, a medical device maintenance management system (MEDEMAS) is designed and implemented which provides a data pool of medical devices, the maintenance protocols and other required information for these devices. The system also contains complete repair and maintenance history of a specific device. MEDEMAS creates optimal maintenance schedule for devices and enables the service technician to carry

Ülkü Balci Dogan; Mehmet Ugur Dogan; Yekta Ülgen; Mehmed Özkan

2010-01-01

321

Atomic resolution holography.  

PubMed

Atomic resolution holography, such as X-ray fluorescence holography (XFH)[1] and photoelectron holography (PH), has the attention of researcher as an informative local structure analysis, because it provides three dimensional atomic images around specific elements within a range of a few nanometers. It can determine atomic arrangements around a specific element without any prior knowledge of structures. It is considered that the atomic resolution holographic is a third method of structural analysis at the atomic level after X-ray diffraction (XRD) and X-ray absorption fine structure (XAFS). As known by many researchers, XRD and XAFS are established methods that are widespread use in various fields. XRD and XAFS provide information on long-range translational periodicities and very local environments, respectively, whereas the atomic resolution holography gives 3D information on the local order and can visualize surrounding atoms with a large range of coordination shells. We call this feature "3D medium-range local structure observation".In addition to this feature, the atomic resolution holography is very sensitive to the displacement of atoms from their ideal positions, and one can obtain quantitative information about local lattice distortions by analyzing reconstructed atomic images[2] When dopants with different atomic radii from the matrix elements are present, the lattices around the dopants are distorted. However, using the conventional methods of structural analysis, one cannot determine the extent to which the local lattice distortions are preserved from the dopants. XFH is a good tool for solving this problem.Figure 1 shows a recent achievement on a relaxor ferroelectric of Pb(Mg1/3Nb2/3)O3 (PMN) using XFH. The structural studies of relaxor ferroelectrics have been carried out by X-ray or neutron diffractions, which suggested rhombohedral distortions of their lattices. However, their true pictures have not been obtained, yet. The Nb K? holograms showed four separate Pb images, as shown in Fig.1. Using these images, we could obtain acute and obtuse rhombohedral structures of the crystal unit cells. Moreover, the Pb-Pb correlated images reconstructed from Pb L? holograms showed a local structure of body center-like 2a0 ×2a0 × 2a0 superlattice, proving a rigid 3D network structural model combining the two kinds of rhombohedrons. This superstructure are believed to play an important role in the relaxor behaviour of PMN at atomic level[3].jmicro;63/suppl_1/i13/DFU047F1F1DFU047F1Fig. 1.3D images of the nearest Pb and O atoms around Nb in Pb(Mg1/3Nb2/3)O3. The cube represents 1/8 of the unit cell. PMID:25359802

Hayashi, Kouichi

2014-11-01

322

A Minimum (Delta)V Orbit Maintenance Strategy for Low-Altitude Missions Using Burn Parameter Optimization  

NASA Technical Reports Server (NTRS)

Orbit maintenance is the series of burns performed during a mission to ensure the orbit satisfies mission constraints. Low-altitude missions often require non-trivial orbit maintenance (Delta)V due to sizable orbital perturbations and minimum altitude thresholds. A strategy is presented for minimizing this (Delta)V using impulsive burn parameter optimization. An initial estimate for the burn parameters is generated by considering a feasible solution to the orbit maintenance problem. An example demonstrates the dV savings from the feasible solution to the optimal solution.

Brown, Aaron J.

2011-01-01

323

Application of Theorem Proving to Problem Solving  

Microsoft Academic Search

This paper shows how an extension of the resolution proof procedure can be used to con­ struct problem solutions. The extended proof procedure can solve problems involving state transformations. The paper explores several alternate problem representations and provides a discussion of solutions to sample problems including the \\

C. Cordell Green

1969-01-01

324

AUTOMOTIVE DIESEL MAINTENANCE 1. UNIT XX, CUMMINS DIESEL ENGINE, MAINTENANCE SUMMARY.  

ERIC Educational Resources Information Center

THIS MODULE OF A 30-MODULE COURSE IS DESIGNED TO PROVIDE A SUMMARY OF THE REASONS AND PROCEDURES FOR DIESEL ENGINE MAINTENANCE. TOPICS ARE WHAT ENGINE BREAK-IN MEANS, ENGINE BREAK-IN, TORQUING BEARINGS (TEMPLATE METHOD), AND THE NEED FOR MAINTENANCE. THE MODULE CONSISTS OF A SELF-INSTRUCTIONAL BRANCH PROGRAMED TRAINING FILM "CUMMINS DIESEL ENGINE…

Minnesota State Dept. of Education, St. Paul. Div. of Vocational and Technical Education.

325

Multiple Mechanisms Contribute To Telomere Maintenance  

PubMed Central

The unlimited growth potential of tumors depends on telomere maintenance and typically depends on telomerase, an RNA-dependent DNA polymerase, which reverse transcribes the telomerase RNA template, synthesizing telomere repeats at the ends of chromosomes. Studies in various model organisms genetically deleted for telomerase indicate that several recombination-based mechanisms also contribute to telomere maintenance. Understanding the molecular basis of these mechanisms is critical since some human tumors form without telomerase, yet the sequence is maintained at the telomeres. Recombination-based mechanisms also likely contribute at some frequency to telomere maintenance in tumors expressing telomerase. Preventing telomere maintenance is predicted to impact tumor growth, yet inhibiting telomerase may select for the recombination-based mechanisms. Telomere recombination mechanisms likely involve altered or unregulated pathways of DNA repair. The use of some DNA damaging agents may encourage the use of these unregulated pathways of DNA repair to be utilized and may allow some tumors to generate resistance to these agents depending on which repair pathways are altered in the tumors. This review will discuss the various telomere recombination mechanisms and will provide rationale regarding the possibility that L1 retrotransposition may contribute to telomere maintenance in tumors lacking telomerase. PMID:25285314

Morrish, Tammy A.; Bekbolysnov, Dulat; Velliquette, David; Morgan, Michelle; Ross, Bryan; Wang, Yongheng; Chaney, Benjamin; McQuigg, Jessica; Fager, Nathan; Maine, Ira P.

2014-01-01

326

Some optimization problems in power system reliability analysis  

E-print Network

This dissertation aims to address two optimization problems involving power system reliabilty analysis, namely multi-area power system adequacy planning and transformer maintenance optimization. A new simulation method for power system reliability...

Jirutitijaroen, Panida

2009-05-15

327

Maintenance of submersible pumps in the septic tanks: ergonomic and biological risks to the worker.  

PubMed

In this study was observed the maintenance task of submersible pumps septic tanks installed in industrial bathrooms. This maintenance activity operators are exposed to various biological and ergonomic risks. This type of activity requires its great physical performers who are also subject to contact with human waste in the form of liquids, gases and solids. Besides the problems mentioned, are still exposed to high temperatures that can cause diseases such as hyperthermia or heatstroke. These aspects were observed using the ergonomic assessment methodology in order to suggest improvements that are reflected in productivity and employee satisfaction. PMID:22316797

Mariño, Suzi; Figueiredo, Alex

2012-01-01

328

Designing for on-orbit maintenance  

NASA Technical Reports Server (NTRS)

The history of conducting maintenance in space is outlined with particular emphasis on Skylab and shuttle missions to develop maintenance concepts for applications to maintaining the Space Station Freedom. In-flight maintenance (IFM) encompasses the activities of the crew alone or with robotic devices inside or outside the pressurized elements. The extravehicular activities (EVAs) and 141 on-orbit intravehicular activities (IVAs) related to space shuttle flights are discussed in terms of task and level of success. Skylab IFM procedures including IVA and EVA are similarly assessed, and two critical issues are identified. Coordination of flight crew, technicians, and other personnel is critical, and the efficient generation, collection, and storage of data is a key to IFM effectiveness. The overriding concern is that design guidelines for IFM learned from other programs are built into the development of technologies for the Space Station Freedom.

Accola, Anne L.; Johnson, Gerald E.; Robbins, Richard L.

1991-01-01

329

Flight control electronics reliability/maintenance study  

NASA Technical Reports Server (NTRS)

Collection and analysis of data are reported that concern the reliability and maintenance experience of flight control system electronics currently in use on passenger carrying jet aircraft. Two airlines B-747 airplane fleets were analyzed to assess the component reliability, system functional reliability, and achieved availability of the CAT II configuration flight control system. Also assessed were the costs generated by this system in the categories of spare equipment, schedule irregularity, and line and shop maintenance. The results indicate that although there is a marked difference in the geographic location and route pattern between the airlines studied, there is a close similarity in the reliability and the maintenance costs associated with the flight control electronics.

Dade, W. W.; Edwards, R. H.; Katt, G. T.; Mcclellan, K. L.; Shomber, H. A.

1977-01-01

330

Guidance for UMTRA project surveillance and maintenance  

SciTech Connect

The Guidance for UMTRA Project Surveillance and Maintenance describes the procedures that will be used to verify that Uranium Mill Tailings Remedial Action (UMTRA) Project disposal sites continue to function as designed. The approach of this guidance document is to identify surveillance requirements and maintenance procedures that will be used to comply with NRC license requirements. This document addresses five primary activities: Definition and characterization of final site conditions. Site inspections; Ground-water monitoring; Aerial photography; and Custodial maintenance and contingency repair. Final site conditions will be defined and characterized prior to the completion of remedial actions at a site. As-built drawings will be compiled, a final topographic survey will be performed, a vicinity map will be prepared, and ground and aerial photographs will be taken. Survey monuments, site markers, and signs will be established as will a network of monitoring wells.

NONE

1986-01-01

331

Problem Solving  

NSDL National Science Digital Library

Problem solving is the thought processes involved in solving a problem. It is both a means of developing students' knowledge of mathematics and a critical outcome of a good mathematics education. A mathematical problem, as distinct from an exercise, requires the solver to search for a method for solving the problem rather than following a set procedure. Mathematical problem solving, therefore, requires an understanding of relevant concepts, procedures, and strategies. To become good problem solvers, students need many opportunities to formulate questions, model problem situations in a variety of ways, generalize mathematical relationships, and solve problems in both mathematical and everyday contexts.

K-12 Outreach,

332

Maintenance of BWR control rod drive mechanisms  

SciTech Connect

Control rod drive mechanism (CRDM) replacement and rebuilding is one of the highest dose, most physically demanding, and complicated maintenance activities routinely accomplished by BWR utilities. A recent industry workshop sponsored by the Oak Ridge National Laboratory, which dealt with the effects of CRDM aging, revealed enhancements in maintenance techniques and tooling which have reduced ALARA, improved worker comfort and productivity, and have provided revised guidelines for CRDM changeout selection. Highlights of this workshop and ongoing research on CRDM aging are presented in this paper.

Greene, R.H.

1991-01-01

333

Effective Implementation of Reliability Centered Maintenance  

NASA Astrophysics Data System (ADS)

This article is intended to guide industry to effective implementation of Reliability Centered Maintenance (RCM) by identifying the pitfalls to avoid, by introducing new concepts that make RCM simple, by discussing the uncomplicated tools needed to commence the RCM analysis, by explaining the step-by-step RCM implementation logic process with actual real life examples, and the step-by-step explanation of the preventive maintenance (PM) strategies, by explaining how to establish an RCM living program, by explaining how to monitor and trend performance of the RCM program. Finally by knowing when the optimum balance point of the RCM efforts have been a chieved.

Nabhan, M. Bassam

2010-06-01

334

Accelerated learning approaches for maintenance training  

SciTech Connect

As a training tool, Accelerated Learning techniques have been in use since 1956. Trainers from a variety of applications and disciplines have found success in using Accelerated Learning approaches, such as training aids, positive affirmations, memory aids, room arrangement, color patterns, and music. Some have thought that maintenance training and Accelerated Learning have nothing in common. Recent training applications by industry and education of Accelerated Learning are proving very successful by several standards. This paper cites available resource examples and challenges maintenance trainers to adopt new ideas and concepts to accelerate learning in all training setting. 7 refs.

Erickson, E.J.

1991-01-01

335

Navy composite maintenance and repair experience  

NASA Technical Reports Server (NTRS)

The Navy has been a strong proponent of composites for aircraft structure. Fleet use of composites started with the F-14 in the early 1970's and has steadily increased. This experience base provides sufficient information to allow an evaluation of the maintenance performance of polymer composites in service. A summary is presented of the Navy's experience with maintenance of composite structure. The general types of damage experienced in the fleet as well as specific examples of composite damage to aircraft is described. The impact of future designs on supportability is also discussed.

Donnellan, T. M.; Cochran, R. C.; Rosenzweig, E. L.; Trabocco, R. E.

1992-01-01

336

Current-oriented swimming by jellyfish and its role in bloom maintenance.  

PubMed

Cross-flows (winds or currents) affect animal movements [1-3]. Animals can temporarily be carried off course or permanently carried away from their preferred habitat by drift depending on their own traveling speed in relation to that of the flow [1]. Animals able to only weakly fly or swim will be the most impacted (e.g., [4]). To circumvent this problem, animals must be able to detect the effects of flow on their movements and respond to it [1, 2]. Here, we show that a weakly swimming organism, the jellyfish Rhizostoma octopus, can orientate its movements with respect to currents and that this behavior is key to the maintenance of blooms and essential to reduce the probability of stranding. We combined in situ observations with first-time deployment of accelerometers on free-ranging jellyfish and simulated the behavior observed in wild jellyfish within a high-resolution hydrodynamic model. Our results show that jellyfish can actively swim countercurrent in response to current drift, leading to significant life-history benefits, i.e., increased chance of survival and facilitated bloom formation. Current-oriented swimming may be achieved by jellyfish either directly detecting current shear across their body surface [5] or indirectly assessing drift direction using other cues (e.g., magnetic, infrasound). Our coupled behavioral-hydrodynamic model provides new evidence that current-oriented swimming contributes to jellyfish being able to form aggregations of hundreds to millions of individuals for up to several months, which may have substantial ecosystem and socioeconomic consequences [6, 7]. It also contributes to improve predictions of jellyfish blooms' magnitude and movements in coastal waters. PMID:25619761

Fossette, Sabrina; Gleiss, Adrian Christopher; Chalumeau, Julien; Bastian, Thomas; Armstrong, Claire Denise; Vandenabeele, Sylvie; Karpytchev, Mikhail; Hays, Graeme Clive

2015-02-01

337

Elimination of chromatographic and mass spectrometric problems in GC-MS analysis of Lavender essential oil by multivariate curve resolution techniques: Improving the peak purity assessment by variable size moving window-evolving factor analysis.  

PubMed

In analysis of complex natural matrices by gas chromatography-mass spectrometry (GC-MS), many disturbing factors such as baseline drift, spectral background, homoscedastic and heteroscedastic noise, peak shape deformation (non-Gaussian peaks), low S/N ratio and co-elution (overlapped and/or embedded peaks) lead the researchers to handle them to serve time, money and experimental efforts. This study aimed to improve the GC-MS analysis of complex natural matrices utilizing multivariate curve resolution (MCR) methods. In addition, to assess the peak purity of the two-dimensional data, a method called variable size moving window-evolving factor analysis (VSMW-EFA) is introduced and examined. The proposed methodology was applied to the GC-MS analysis of Iranian Lavender essential oil, which resulted in extending the number of identified constituents from 56 to 143 components. It was found that the most abundant constituents of the Iranian Lavender essential oil are ?-pinene (16.51%), camphor (10.20%), 1,8-cineole (9.50%), bornyl acetate (8.11%) and camphene (6.50%). This indicates that the Iranian type Lavender contains a relatively high percentage of ?-pinene. Comparison of different types of Lavender essential oils showed the composition similarity between Iranian and Italian (Sardinia Island) Lavenders. PMID:25621436

Jalali-Heravi, Mehdi; Moazeni-Pourasil, Roudabeh Sadat; Sereshti, Hassan

2015-03-01

338

Pacific Northwest Laboratory FY 1993 Site Maintenance Plan for maintenance of DOE nonnuclear facilities  

SciTech Connect

This Site Maintenance Plan has been developed for Pacific Northwest Laboratory`s (PNL) Nonnuclear Facilities. It is based on requirements specified by US Department of Energy (DOE) Order 4330.4A, Chapter I, Change No. 4. The objective of this maintenance plan is to provide baseline information for compliance to the DOE Order 4330.4A, to identify needed improvements, and to document the planned maintenance budget for Fiscal Year (FY) 1993 and to estimate maintenance budgets for FY 1994 and FY 1995 for all PNL facilities. Using the results of the self-assessment, PNL has selected 12 of the 36 elements of the Maintenance Program defined by DOE Order 4330.4A, Chapter I, for improvement. The elements selected for improvement are: Facility Condition Inspections; Work Request (Order) System; Formal Job Planning and Estimating; Work Performance (Time) Standards; Priority System; Maintenance Procedures and Other Work-Related Documents; Scheduling System; Post Maintenance Testing; Backlog Work Control; Equipment Repair History and Vendor Information; Work Sampling; and Identification and Control. Based upon a graded approach and current funding, those elements considered most important have been selected as goals for earliest compliance. Commitment dates for these elements have been established for compliance. The remaining elements of noncompliance will be targeted for implementation during later budget periods.

Bright, J.D.

1992-09-28

339

Pacific Northwest Laboratory FY 1993 Site Maintenance Plan for maintenance of DOE nonnuclear facilities  

SciTech Connect

This Site Maintenance Plan has been developed for Pacific Northwest Laboratory's (PNL) Nonnuclear Facilities. It is based on requirements specified by US Department of Energy (DOE) Order 4330.4A, Chapter I, Change No. 4. The objective of this maintenance plan is to provide baseline information for compliance to the DOE Order 4330.4A, to identify needed improvements, and to document the planned maintenance budget for Fiscal Year (FY) 1993 and to estimate maintenance budgets for FY 1994 and FY 1995 for all PNL facilities. Using the results of the self-assessment, PNL has selected 12 of the 36 elements of the Maintenance Program defined by DOE Order 4330.4A, Chapter I, for improvement. The elements selected for improvement are: Facility Condition Inspections; Work Request (Order) System; Formal Job Planning and Estimating; Work Performance (Time) Standards; Priority System; Maintenance Procedures and Other Work-Related Documents; Scheduling System; Post Maintenance Testing; Backlog Work Control; Equipment Repair History and Vendor Information; Work Sampling; and Identification and Control. Based upon a graded approach and current funding, those elements considered most important have been selected as goals for earliest compliance. Commitment dates for these elements have been established for compliance. The remaining elements of noncompliance will be targeted for implementation during later budget periods.

Bright, J.D.

1992-09-28

340

Lexical Ambiguity Resolution  

E-print Network

Lexical Ambiguity Resolution: Perspectives from Psycholinguistics, Neuropsychology, and Artificial throughout the short history of psycholinguistics. In what follows, we organize old and present new evidence

341

USGS aerial resolution targets.  

USGS Publications Warehouse

It is necessary to measure the achievable resolution of any airborne sensor that is to be used for metric purposes. Laboratory calibration facilities may be inadequate or inappropriate for determining the resolution of non-photographic sensors such as optical-mechanical scanners, television imaging tubes, and linear arrays. However, large target arrays imaged in the field can be used in testing such systems. The USGS has constructed an array of resolution targets in order to permit field testing of a variety of airborne sensing systems. The target array permits any interested organization with an airborne sensing system to accurately determine the operational resolution of its system. -from Author

Salamonowicz, P.H.

1982-01-01

342

Planification de la maintenance d'un parc de turbines-alternateurs par programmation mathematique  

NASA Astrophysics Data System (ADS)

A growing number of Hydro-Quebec's hydro generators are at the end of their useful life and maintenance managers fear to face a number of overhauls exceeding what can be handled. Maintenance crews and budgets are limited and these withdrawals may take up to a full year and mobilize significant resources in addition to the loss of electricity production. In addition, increased export sales forecasts and severe production patterns are expected to speed up wear that can lead to halting many units at the same time. Currently, expert judgment is at the heart of withdrawals which rely primarily on periodic inspections and in-situ measurements and the results are sent to the maintenance planning team who coordinate all the withdrawals decisions. The degradations phenomena taking place is random in nature and the prediction capability of wear using only inspections is limited to short-term at best. A long term planning of major overhauls is sought by managers for the sake of justifying and rationalizing budgets and resources. The maintenance managers are able to provide a huge amount of data. Among them, is the hourly production of each unit for several years, the repairs history on each part of a unit as well as major withdrawals since the 1950's. In this research, we tackle the problem of long term maintenance planning for a fleet of 90 hydro generators at Hydro-Quebec over a 50 years planning horizon period. We lay a scientific and rational framework to support withdrawals decisions by using part of the available data and maintenance history while fulfilling a set of technical and economic constraints. We propose a planning approach based on a constrained optimization framework. We begin by decomposing and sorting hydro generator components to highlight the most influential parts. A failure rate model is developed to take into account the technical characteristics and unit utilization. Then, replacement and repair policies are evaluated for each of the components then strategies are derived for the whole unit. Traditional univariate policies such as the age replacement policy and the minimal repair policy are calculated. These policies are extended to build alternative bivariate maintenance policy as well as a repair strategy where the state of a component after a repair is rejuvenated by a constant coefficient. These templates form the basis for the calculation of objective function for the scheduling problem. On one hand, this issue is treated as a nonlinear problem where the objective is to minimize the average total maintenance cost per unit of time on an infinite horizon for the fleet with technical and economic constraints. A formulation is also proposed in the case of a finite time horizon. In the event of electricity production variation, and given that the usage profile is known, the influence of production scenarios is reflected on the unit's components through their failure rate. In this context, prognoses on possible resources problems are made by studying the characteristics of the generated plans. On the second hand, the withdrawals are now subjected to two decision criteria. In addition to minimizing the average total maintenance cost per unit of time on an infinite time horizon, the best achievable reliability of remaining turbo generators is sought. This problem is treated as a biobjective nonlinear optimization problem. Finally a series of problems describing multiple contexts are solved for planning renovations of 90 turbo generators units considering 3 major components in each unit and 2 types of maintenance policies for each component.

Aoudjit, Hakim

343

Solicitation - Geothermal Drilling Development and Well Maintenance Projects  

SciTech Connect

Energy (DOE)-industry research and development (R and D) organization, sponsors near-term technology development projects for reducing geothermal drilling and well maintenance costs. Sandia National Laboratories (Albuquerque, NM) administers DOE funds for GDO cost-shared projects and provides technical support. The GDO serves a very important function in fostering geothermal development. It encourages commercialization of emerging, cost-reducing drilling technologies, while fostering a spirit of cooperation among various segments of the geothermal industry. For Sandia, the GDO also serves as a means of identifying the geothermal industry's drilling fuel/or well maintenance problems, and provides an important forum for technology transfer. Successfully completed GDO projects include: the development of a high-temperature borehole televiewer, high-temperature rotating head rubbers, a retrievable whipstock, and a high-temperature/high-pressure valve-changing tool. Ongoing GDO projects include technology for stemming lost circulation; foam cement integrity log interpretation, insulated drill pipe, percussive mud hammers for geothermal drilling, a high-temperature/ high-pressure valve changing tool assembly (adding a milling capability), deformed casing remediation, high- temperature steering tools, diagnostic instrumentation for casing in geothermal wells, and elastomeric casing protectors.

Sattler, A.R.

1999-07-07

344

Teaching Guide for Building Maintenance Occupations.  

ERIC Educational Resources Information Center

This teaching guide for building maintenance is one of a series of five performance- and employer-based secondary level vocational education guides. Part 1 provides tools, resources, and a process to be used at the local level to develop a training curriculum and supporting instructional activities. It includes a comprehensive overview of the…

Kempton, Robert F.

345

Lithium in maintenance therapy for bipolar disorder  

Microsoft Academic Search

Lithium has been used for the medical treatment of bipolar disorder for over 50 years. The purpose of this paper is to review the evidence base supporting the use of lithium in the maintenance phase of treatment of bipolar disorder and the limitations which reduce the clinical effectiveness of this medication. A selective review of the relevant literature was carried

Allan H. Young; James I. Newham

2006-01-01

346

Business Machine Maintenance. Performance Objectives. Basic Course.  

ERIC Educational Resources Information Center

Several intermediate performance objectives and corresponding criterion measures are listed for each of 25 terminal objectives presented in this guide for a basic business machine maintenance course at the secondary level. (For the intermediate course guide see CE 010 948.) The materials were developed for a two-semester (2 hour daily) course…

McMinn, Robert

347

Linking color polymorphism maintenance and speciation  

E-print Network

Linking color polymorphism maintenance and speciation Suzanne M. Gray1 and Jeffrey S. McKinnon2 1 contribute to both color poly- morphism persistence and speciation. As expected, divergent selection clearly can couple with gene flow to maintain color polymorphism and mediate speciation. More surprisingly

348

Implementation of a Computerized Maintenance Management System  

NASA Technical Reports Server (NTRS)

A primer Computerized Maintenance Management System (CMMS) has been established for NASA Ames pressure component certification program. The CMMS takes full advantage of the latest computer technology and SQL relational database to perform periodic services for vital pressure components. The Ames certification program is briefly described and the aspects of the CMMS implementation are discussed as they are related to the certification objectives.

Shen, Yong-Hong; Askari, Bruce

1994-01-01

349

Epigenetic Regulation of Memory Formation and Maintenance  

ERIC Educational Resources Information Center

Understanding the cellular and molecular mechanisms underlying the formation and maintenance of memories is a central goal of the neuroscience community. It is well regarded that an organism's ability to lastingly adapt its behavior in response to a transient environmental stimulus relies on the central nervous system's capability for structural…

Zovkic, Iva B.; Guzman-Karlsson, Mikael C.; Sweatt, J. David

2013-01-01

350

Language Maintenance: A Liberal-Egalitarian Approach  

ERIC Educational Resources Information Center

This paper will seek to determine what types of legislative or policy measures should be considered as morally acceptable ones for the state to implement as part of a language maintenance effort. It will approach the issue from a liberal-egalitarian perspective. As a first step, a series of normative constraints that liberal-egalitarians would…

Lewis, Huw

2013-01-01

351

Generalized Training Devices for Avionic Systems Maintenance.  

ERIC Educational Resources Information Center

A research study was conducted to determine the feasibility and desirability of developing generalized training equipment for use in avionic systems maintenance training. The study consisted of a group of survey and analytic tasks to provide useful guidance to serve the needs of the Naval Aviation community in future years. The study had four…

Parker, Edward L.

352

Cost Management of Medical Equipment Maintenance  

Microsoft Academic Search

In the present study we combine Activity Based Costing (ABC) with a microprocess-based custom-made management system used to control of the medical equipment maintenance service performed by a clinical engineering group in a public health institution in Brazil. Results show the cost of service orders calculated through the allocation of the expenditure per cost center to activities performed during the

L. S. Rocha; J. W. M. Bassani

2004-01-01

353

Davis PV plant operation and maintenance manual  

SciTech Connect

This operation and maintenance manual contains the information necessary to run the Photovoltaics for Utility Scale Applications (PVUSA) test facility in Davis, California. References to more specific information available in drawings, data sheets, files, or vendor manuals are included. The PVUSA is a national cooperative research and demonstration program formed in 1987 to assess the potential of utility scale photovoltaic systems.

NONE

1994-09-01

354

PORTFOLIO OF POTENTIAL STRATEGIES IN AERONAUTIC MAINTENANCE  

SciTech Connect

EADS divisions aim more and more at developing services associated to their platforms. EADS divisions, like Airbus and Eurocopter, are investigating on services associated to their platforms in order to add them value. One possible service consists in structural maintenance operation assistance, especially for NDT operations performed by the customer. EADS Innovation Works envisages three different and complementary enhanced structural maintenance categories. Enhanced NDT improves standard NDT operation environment. This is made possible by the existence of 'smart' NDT tools that are computer based and therefore able to support other functions. These functions range from local smart data processing and display to remote expert assisted operation. Passive Sensor Network relies on sensors permanently installed on aircraft structure. Interrogation of sensors is performed on ground and off line (while structure is not loaded except by its own weight). It can be done at arbitrary times in order to determine structure health. The aim is to give easy access to some hidden ''hot spots,'' to reduce human factor in structure health assessment and optimize maintenance. Structural Health Monitoring goes a step beyond Passive Sensor Network, because interrogation units are on board the aircraft and may be connected to aircraft network. It allows to use on-line techniques such as adapted acoustic emission and to automatically raise an alarm when a defect appears in the structure. This paper presents these different ways of improving structural maintenance operations in service, with their respective advantages and limitations.

Rolet, S. [Structural Health Engineering department, EADS Innovation Works, Toulouse (France)

2010-02-22

355

ICD Complex Operations and Maintenance Plan  

SciTech Connect

This Operations and Maintenance (O&M) Plan describes how the Idaho National Laboratory (INL) conducts operations, winterization, and startup of the Idaho CERCLA Disposal Facility (ICDF) Complex. The ICDF Complex is the centralized INL facility responsible for the receipt, storage, treatment (as necessary), and disposal of INL Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) remediation waste.

Gibson, P. L.

2007-06-25

356

Industrial Maintenance Technology. Technical Committee Report.  

ERIC Educational Resources Information Center

This Technical Committee Report prepared by industry representatives in Idaho lists the skills currently necessary for an employee in that state to obtain a job in industrial maintenance technology, retain a job once hired, and advance in that occupational field. (Task lists are grouped according to duty areas generally used in industry settings,…

Idaho State Dept. of Education, Boise. Div. of Vocational Education.

357

Safety and maintenance engineering: A compilation  

NASA Technical Reports Server (NTRS)

A compilation is presented for the dissemination of information on technological developments which have potential utility outside the aerospace and nuclear communities. Safety of personnel engaged in the handling of hazardous materials and equipment, protection of equipment from fire, high wind, or careless handling by personnel, and techniques for the maintenance of operating equipment are reported.

1974-01-01

358

A formal ontology for industrial maintenance  

E-print Network

-ENIT, University of Toulouse 2- Dr. Brigitte CHEBEL-MORELLO, Automatic Control and Micro-Mechatronic Systems Department, FEMTO-ST institute 3- Pr. Noureddine ZERHOUNI, Automatic Control and Micro-Mechatronic Systems The rapid advancement of information and communication technologies has resulted in a variety of maintenance

Boyer, Edmond

359

Business Machine Maintenance. Performance Objectives. Intermediate Course.  

ERIC Educational Resources Information Center

Several intermediate performance objectives and corresponding criterion measures are listed for each of 28 terminal objectives presented in this guide for an intermediate business machine maintenance course at the secondary level. (For the basic course guide see CE 010 949.) Titles of the 28 terminal objective sections are Career Opportunities,…

McMinn, Robert

360

Employment Patterns of Methadone Maintenance Clients  

ERIC Educational Resources Information Center

Analysis of employment patterns of methadone maintenance clients had indicated that the majority were not employed at time of program admission. At time of evaluation, 70 percent of the sample were employed; 88 percent of these clients had previous work histories and brought marketable skills with them. (Author)

Bloch, Harriet I.; And Others

1977-01-01

361

Project Surveillance and Maintenance Plan. [UMTRA Project  

SciTech Connect

The Project Surveillance and Maintenance Plan (PSMP) describes the procedures that will be used by the US Department of Energy (DOE), or other agency as designated by the President to verify that inactive uranium tailings disposal facilities remain in compliance with licensing requirements and US Environmental Protection Agency (EPA) standards for remedial actions. The PSMP will be used as a guide for the development of individual Site Surveillance and Maintenance Plans (part of a license application) for each of the UMTRA Project sites. The PSMP is not intended to provide minimum requirements but rather to provide guidance in the selection of surveillance measures. For example, the plan acknowledges that ground-water monitoring may or may not be required and provides the (guidance) to make this decision. The Site Surveillance and Maintenance Plans (SSMPs) will form the basis for the licensing of the long-term surveillance and maintenance of each UMTRA Project site by the NRC. Therefore, the PSMP is a key milestone in the licensing process of all UMTRA Project sites. The Project Licensing Plan (DOE, 1984a) describes the licensing process. 11 refs., 22 figs., 8 tabs.

Not Available

1985-09-01

362

Korean Heritage Language Maintenance and Language Ideology  

ERIC Educational Resources Information Center

This paper explores ways in which language ideology is linked to maintenance of Korean as a heritage language by Koreans in America. The data for this ethnographic study come from three separate sources: 1) a Korean language program at an American university; 2) a community-based ESL program for Korean seniors; and 3) a recently immigrated Korean…

Jeon, Mihyon

2008-01-01

363

Automobile Maintenance. Reading and Language Activities.  

ERIC Educational Resources Information Center

Designed primarily for special needs students in a vocational program in automobile maintenance, this book was written to refine the basic skills of following directions, reading comprehension, vocabulary building, spelling, word usage, and word recognition, while relating these skills to some of the tasks a beginning student in the program must…

Kessman, William A.

364

The PEB Property Management File. Maintenance.  

ERIC Educational Resources Information Center

The poor condition of many schools and other educational buildings is giving rise to increasing concern in many countries that are members of the Organisation for Economic Development and Cooperation. The disparity between concern with deterioration of educational buildings and the failure to fund improvements and/or maintenance is referred to as…

PEB Exchange, 1995

1995-01-01

365

Industrial Maintenance. Ohio's Competency Analysis Profile.  

ERIC Educational Resources Information Center

Developed through a modified DACUM (Developing a Curriculum) process involving business, industry, labor, and community agency representatives in Ohio, this document is a comprehensive and verified employer competency profile for industrial maintenance occupations. The list contains units (with and without subunits), competencies, and competency…

Ohio State Univ., Columbus. Vocational Instructional Materials Lab.

366

Building Maintenance. Performance Objectives. Basic Course.  

ERIC Educational Resources Information Center

Several intermediate performance objectives and corresponding criterion measures are listed for each of the 13 terminal objectives for a basic high school building maintenance course (the first year of a 3-year program). The materials were developed for a 36-week course (2 hours daily) designed to enable 10th grade students to develop competencies…

Taylor, Ernest

367

Linking color polymorphism maintenance and speciation  

Microsoft Academic Search

Here, we review the recently burgeoning literature on color polymorphisms, seeking to integrate studies of the maintenance of genetic variation and the evolution of reproductive isolation. Our survey reveals that several mechanisms, some operating between populations and others within them, can contribute to both color poly- morphism persistence and speciation. As expected, divergent selection clearly can couple with gene flow

Suzanne M. Gray; Jeffrey S. McKinnon

2006-01-01

368

A process for risk-focused maintenance  

SciTech Connect

This report presents a process for focusing maintenance resources on components that enable nuclear plant systems to perform their essential functions and on components whose failure may initiate challenges to safety systems, so as to have the greatest impact in decreasing risk. The process provides criteria, based on risk, for deciding which components are critical to risk and determining what maintenance activities are required to ensure reliable operation of those risk-critical components. Two approaches are provided for selection of risk-critical components. One approach uses the results of a Probabilistic Risk Assessment (PRA); the other is based on the methodology developed for this report, which has a basis in PRA although it does not use the results of a PRA study. Following identification of risk-critical components, both approaches use a single methodology for determining what maintenance activities are required to ensure reliable operation of the identified components. The report also provides demonstrations of application of the two approaches to selection of risk-critical components and demonstrations of application of the methodology for determining what maintenance activities are required to an active standby safety system, a normally operating system, and passive components. 5 refs., 11 figs., 1 tab.

Lofgren, E.V.; Cooper, S.E.; Kurth, R.E.; Phillips, L.B. (Science Applications International Corp., McLean, VA (USA))

1991-03-01

369

OPERATION AND MAINTENANCE MANUAL FOR ELECTROSTATIC PRECIPITATORS  

EPA Science Inventory

The manual focuses on the operation and maintenance (O/M) of typical electrostatic precipitators (ESPs). It summarizes available information on theory and design in sufficient detail to provide a basic background O/M portions of the manual. Although O/M-related air pollution prob...

370

School Plant Maintenance and Custodial Services  

ERIC Educational Resources Information Center

School maintenance guidelines are directed to the local school situation where the custodian may have neither the opportunity for any formal training or experienced personnel available to instruct him. Topics covered are those that are thought to be of greatest value to the local school custodian and include--(1) floor care, (2) carpet cleaning,…

Kentucky State Dept. of Education, Frankfort.

371

Examining the Relationship Between Passenger Airline Aircraft Maintenance Outsourcing and Aircraft Safety  

NASA Astrophysics Data System (ADS)

The problem addressed was the concern for aircraft safety rates as they relate to the rate of maintenance outsourcing. Data gathered from 14 passenger airlines: AirTran, Alaska, America West, American, Continental, Delta, Frontier, Hawaiian, JetBlue, Midwest, Northwest, Southwest, United, and USAir covered the years 1996 through 2008. A quantitative correlational design, utilizing Pearson's correlation coefficient, and the coefficient of determination were used in the present study to measure the correlation between variables. Elements of passenger airline aircraft maintenance outsourcing and aircraft accidents, incidents, and pilot deviations within domestic passenger airline operations were analyzed, examined, and evaluated. Rates of maintenance outsourcing were analyzed to determine the association with accident, incident, and pilot deviation rates. Maintenance outsourcing rates used in the evaluation were the yearly dollar expenditure of passenger airlines for aircraft maintenance outsourcing as they relate to the total airline aircraft maintenance expenditures. Aircraft accident, incident, and pilot deviation rates used in the evaluation were the yearly number of accidents, incidents, and pilot deviations per miles flown. The Pearson r-values were calculated to measure the linear relationship strength between the variables. There were no statistically significant correlation findings for accidents, r(174)=0.065, p=0.393, and incidents, r(174)=0.020, p=0.793. However, there was a statistically significant correlation for pilot deviation rates, r(174)=0.204, p=0.007 thus indicating a statistically significant correlation between maintenance outsourcing rates and pilot deviation rates. The calculated R square value of 0.042 represents the variance that can be accounted for in aircraft pilot deviation rates by examining the variance in aircraft maintenance outsourcing rates; accordingly, 95.8% of the variance is unexplained. Suggestions for future research include replication of the present study with the inclusion of maintenance outsourcing rate data for all airlines differentiated between domestic and foreign repair station utilization. Replication of the present study every five years is also encouraged to continue evaluating the impact of maintenance outsourcing practices on passenger airline safety.

Monaghan, Kari L.

372

Optimal Maintenance Works for the Aborshada Road in the Western Region of Libya  

NASA Astrophysics Data System (ADS)

In this research, the condition of a road pavement was investigated for the Aborshada Road in the Gharian region of Libya to determine the optimal maintenance works. Previously, a simple engineering judgment was the only procedure followed by the Gharian municipal engineers for evaluating pavements and prioritizing maintenance. The surface condition of the Aborshada Road pavement was investigated using "the Pavement Condition Index (PCI)" visual technique. The pavement was inspected to survey the different distresses in each sample unit. Ninteen pavement distresses were classified according to the PCI standards (PCI for roads and parking lots became an ASTM standard in 2007 (D6433-07)). It was necessary to know the most common distresses of the Aborshada Road to provide assistance for the decision maker in his evaluation of the pavement and the optimum repair method to be selected. This study reveals the actual performance of the pavements and suggests the research required for dealing with the pavement maintenance problem in Libya, especially in the western region. The best maintenance alternative for Aborshada Road was Case No. 3 (Potholes, Long. & Trans. Cracking and Alligator Crack Maintenance). Also, the most common pavement distresses on the Aborshada Road were Distress Nos. 1, 3, 6, 7, 10 and 13 according to the ASTM - D6433-07 classification

Youssef, Medhat Abdelrahman; Elbasher, Abdelbary Altayb

2014-09-01

373

The Possibility of Traditional Chinese Medicine as Maintenance Therapy for Advanced Nonsmall Cell Lung Cancer  

PubMed Central

Lung cancer has become the leading cause of cancer deaths, with nonsmall cell lung cancer (NSCLC) accounting for around 80% of lung cancer cases. Chemotherapy is the main conventional therapy for advanced NSCLC. However, the disease control achieved with classical chemotherapy in advanced NSCLC is usually restricted to only a few months. Thus, sustaining the therapeutic effect of first-line chemotherapy is an important problem that requires study. Maintenance therapy is given for patients with advanced NSCLC if three is no tumor progression after four to six cycles of first-line platinum-based chemotherapy. However, selection of appropriate maintenance therapy depends on several factors, while traditional Chinese medicine (TCM) as maintenance therapy is recommended for all kinds of patients. It has been demonstrated that TCM can prolong the survival time, improve the quality of life (QOL), and reduce the side effects for advanced NSCLC. Although the trials we searched about TCM serving as maintenance therapy is only 9 studies, the results indicate TCM can prolong the progression free survival (PFS) and improve the QOL. So it is possible for TCM to be as maintenance therapy for advanced NSCLC. More rigorous trials are required to further verify its efficacy. PMID:25165478

Xu, Weiru; Yang, Guowang; Xu, Yongmei; Zhang, Qing; Fu, Qi; Yu, Jie; Yu, Mingwei; Zhao, Wenshuo; Yang, Zhong; Hu, Fengshan; Han, Dong; Wang, Xiaomin

2014-01-01

374

A 12-month controlled trial of methadone medical maintenance integrated into an adaptive treatment model.  

PubMed

Methadone medical maintenance (MMM) reduces the reporting schedule for stable and well-functioning methadone maintenance patients to once a month, with counseling provided by medical staff. We report on the 12-month outcomes of 92 highly stable methadone maintenance patients randomly assigned to one of three study conditions: routine care, MMM at the methadone maintenance program, and MMM at a physician's office. Methadone medical maintenance patients received a 28-day supply of methadone, whereas routine care patients received five or six take-home methadone doses each week. All patients performed a medication recall once a month and submitted two urine samples each month. An adaptive stepped-care system of treatment intensification was used for patients who failed recall or who had drug-positive urine specimens. Seventy-seven patients completed the 12-month study period. Dropout was caused primarily by problems with handling methadone and disliking the recall frequency. There were low rates of drug use or failed medication recall. Treatment satisfaction was high in all groups, but the MMM patients initiated more new employment or family/social activities than did routine care patients over the study period. The stepped-care approach was well tolerated and matched patients to an appropriate step of service within a continuum of treatment intensity. PMID:17084792

King, Van L; Kidorf, Michael S; Stoller, Kenneth B; Schwartz, Robert; Kolodner, Kenneth; Brooner, Robert K

2006-12-01

375

Standard Hydrogen Monitoring System-D operation and maintenance manual  

SciTech Connect

The purpose of this document is to provide information for the operation and maintenance of the Standard Hydrogen Monitoring System-D (SHMS-D) used in the 200E and 200W area tank farms on the Hanford Site. This provides information specific to the mechanical operation of the system and is not intended to take the place of a Plant Operating Procedure. However, it does provide more information on the system than a Plant Operating Procedure. The intent here is that the system is started up by a technician or engineer who has completed tank farms training course No. 351405, and then the only actions performed by Operations will be routine log taking. If any problems not addressed by the operating procedure are encountered with the unit, engineering should be contacted.

Schneider, T.C.

1997-05-01

376

Well-defined maintenance practices lower environmental, legal risks  

SciTech Connect

Equipment and vehicle maintenance and repair facilities may be small contributors to environmental pollution, but they are not immune to state and federal discharge requirements and enforcement actions. The shift in the last two decades from managing water quality to managing effluent quality at the source has had profound effects on smaller facilities that discharge contaminants. Owners and operators of such facilities should develop and implement ``environmental guidelines`` or ``best management practices`` for employees to follow daily. If a program is later implemented, this preliminary step should reduce the risk of contaminants entering the environment and potentially lower the company`s exposure to fines, criminal liability, cleanup requirements, lawsuits, negative publicity, land resale problems and possible shutdowns. Regional and local environmental regulatory agencies can provide information on state and local requirements pertaining to specific businesses. The authors present guidelines for storing hazardous waste onsite.

Fink, R.G.; Rinehimer, S.B. [RGF Environmental Group, West Palm Beach, FL (United States)

1995-04-01

377

Postextraction maintenance of the alveolar ridge: rationale and review.  

PubMed

Alveolar ridge resorption has long been considered an unavoidable consequence of tooth extraction and can be a significant problem in implant and restorative dentistry. Postextraction maintenance of the alveolar ridge minimizes residual ridge resorption and allows placement of an implant that satisfies both esthetic and functional criteria. Guided bone-regeneration techniques and the use of bone-replacement materials have been shown to enhance socket healing and potentially modify the resorption process. The prime indication for socket preservation is the prevention of alveolar-bone and soft-tissue collapse, which would cause unacceptable prosthesis esthetics. This review describes the rationale behind socket preservation, and the various techniques and materials used for extraction site grafting. PMID:22616214

Agarwal, Garima; Thomas, Raison; Mehta, Dhoom

2012-05-01

378

Temporal Resolution [Normal Form  

E-print Network

Michael Fisher An Introduction to Practical Formal Methods Using Temporal Logic [TEMPORAL RESOLUTION: SNF] ­ p.1/20 Recap: SNF As in classical resolution, PTL formulae are transformed into a clausal form; in our case SNF: i Ci where each PTL-clause, Ci , is in one of the following forms: start c lc (an

Fisher, Michael

379

Temporal Resolution [Normal Form  

E-print Network

Michael Fisher An Introduction to Practical Formal Methods Using Temporal Logic [TEMPORAL RESOLUTION: SNF] ­ p.1/20 #12;Recap: SNF As in classical resolution, PTL formulae are transformed into a clausal form; in our case SNF: i Ci where each PTL-clause, Ci , is in one of the following forms: start c lc (an

Fisher, Michael

380

Temporal Resolution [Loop Search  

E-print Network

perform the following steps. 1. Transform A into SNF, giving a set of clauses AS. 2. Perform step Logic [TEMPORAL RESOLUTION: LOOP SEARCH] ­ p.2/24 #12;Merged SNF To apply the temporal resolution rule, it is often convenient to combine one or more step clauses. Consequently, a variant on SNF called merged-SNF

Fisher, Michael

381

Risk Based Maintenance Optimization using Probabilistic Maintenance Quantification Models of Circuit Breaker  

E-print Network

at component and system level. A probabilistic maintenance model is proposed using similar approach recently introduced for power transformers. Probabilistic models give better insight into the interplay among monitoring techniques, failure modes...

Natti, Satish

2010-01-14

382

Sibling Conflict Resolution Skills: Assessment and Training  

ERIC Educational Resources Information Center

Sibling conflict can rise to the level of a clinical problem. In Phase 1 a lengthy behavioral role-play analog sampling child reactions to normal sibling conflicts was successfully shortened. In Phase 2 normal children who lacked sibling conflict resolution skills were randomly assigned to a Training or Measurement Only condition. Training…

Thomas, Brett W.; Roberts, Mark W.

2009-01-01

383

Nurses' Resolutions of Six Ethical Dilemmas.  

ERIC Educational Resources Information Center

Six ethical dilemmas related to nursing practice were developed and presented to registered and trainee nurses for their resolution. A non-nurse group of university students also gave decisions about what a nurse should do in each ethically-loaded situation. A dilemma was classified as recurrent if its core problem was spontaneously mentioned by…

Lawrence, Jeanette A.; Crisham, Patricia

384

An evaluation of the generalization and maintenance of functional communication and self-control skills with preschoolers.  

PubMed

The preschool life skills (PLS) program (Hanley, Heal, Tiger, & Ingvarsson, 2007; Luczynski & Hanley, 2013) involves teaching social skills as a means of decreasing and preventing problem behavior. However, achieving durable outcomes as children transition across educational settings depend on the generalization and long-term maintenance of those skills. The purpose of this study was to evaluate procedures for promoting generalization and long-term maintenance of functional communication and self-control skills for 6 preschool children. When the children's social skills decreased across repeated observations during a generalization assessment, we incorporated modifications to the teaching procedures. However, the effects of the modifications were variable across skills and children. Satisfactory generalization was observed only after the teacher was informed of the target skills and teaching strategies. Maintenance of most social skills was observed 3 months after teaching was discontinued. We discuss the importance of improving child and teacher behavior to promote generalization and maintenance of important social skills. PMID:24829050

Luczynski, Kevin C; Hanley, Gregory P; Rodriguez, Nicole M

2014-01-01

385

GUIDES TO POLLUTION PREVENTION: THE MARINE MAINTENANCE AND REPAIR INDUSTRY  

EPA Science Inventory

Marine maintenance and repair facilities generate a variety of waste streams during repair and maintenance of mechanical systems, structural components, upholstery, electrical systems, and surfaces of ships and boats. ypical wastes generated from these operations, which present o...

386

14 CFR 151.97 - Maintenance and repair.  

Code of Federal Regulations, 2011 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.97 Maintenance and repair. (a) Maintenance work is not airport development as...

2011-01-01

387

29 CFR 779.116 - Custodial and maintenance employees.  

Code of Federal Regulations, 2010 CFR

...false Custodial and maintenance employees. 779.116 Section 779.116 Labor Regulations Relating to Labor (Continued...Or in the Production of Goods for Commerce § 779.116 Custodial and maintenance employees....

2010-07-01

388

1. EXTERIOR OF CIVIL ENGINEERING MAINTENANCE SHOP, BUILDING 103, LOOKING ...  

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

1. EXTERIOR OF CIVIL ENGINEERING MAINTENANCE SHOP, BUILDING 103, LOOKING NORTH. - Mill Valley Air Force Station, Civil Engineering Maintenance Shop, East Ridgecrest Boulevard, Mount Tamalpais, Mill Valley, Marin County, CA

389

3. INTERIOR VIEW OF MAINTENANCE ROOM OF THE CIVIL ENGINEERING ...  

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

3. INTERIOR VIEW OF MAINTENANCE ROOM OF THE CIVIL ENGINEERING SHOP, BUILDING 103, LOOKING WEST. - Mill Valley Air Force Station, Civil Engineering Maintenance Shop, East Ridgecrest Boulevard, Mount Tamalpais, Mill Valley, Marin County, CA

390

MEDEMAS -Medical Device Management and Maintenance System Architecture  

NASA Astrophysics Data System (ADS)

In the proposed study, a medical device maintenance management system (MEDEMAS) is designed and implemented which provides a data pool of medical devices, the maintenance protocols and other required information for these devices. The system also contains complete repair and maintenance history of a specific device. MEDEMAS creates optimal maintenance schedule for devices and enables the service technician to carry out and report maintenance/repair processes via remote access. Thus predicted future failures are possible to prevent or minimize. Maintenance and repair is essential for patient safety and proper functioning of the medical devices, as it prevents performance decrease of the devices, deterioration of the equipment, and detrimental effects on the health of a patient, the user or other interacting people. The study aims to make the maintenance process more accurate, more efficient, faster and easier to manage and organize; and much less confusing. The accumulated history of medical devices and maintenance personnel helps efficient facility planning.

Dogan, Ülkü Balc?; Dogan, Mehmet Ugur; Ülgen, Yekta; Özkan, Mehmed

391

7 CFR 400.683 - Administration and maintenance.  

Code of Federal Regulations, 2011 CFR

...false Administration and maintenance. 400.683 Section 400...683 Administration and maintenance. (a) Ineligible producer data will be maintained in a...credit reporting agencies and collection agencies; in...

2011-01-01

392

7 CFR 400.683 - Administration and maintenance.  

Code of Federal Regulations, 2010 CFR

...false Administration and maintenance. 400.683 Section 400...683 Administration and maintenance. (a) Ineligible producer data will be maintained in a...credit reporting agencies and collection agencies; in...

2010-01-01

393

PROGRAMME SPECIFICATION POSTGRADUATE PROGRAMMES Programme name Aircraft Maintenance Management  

E-print Network

- Assess safety as the over-riding objective within the air transport Industry - Recognise that qualities1 PROGRAMME SPECIFICATION ­ POSTGRADUATE PROGRAMMES KEY FACTS Programme name Aircraft Maintenance delivery PROGRAMME SUMMARY MSc Aircraft Maintenance Management is for experienced aviation industry

Weyde, Tillman

394

14 CFR 125.407 - Maintenance log: Airplanes.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 false Maintenance log: Airplanes. 125.407 Section 125.407 ...OPERATIONS CERTIFICATION AND OPERATIONS: AIRPLANES HAVING A SEATING CAPACITY OF 20 OR...Reports § 125.407 Maintenance log: Airplanes. (a) Each person who takes...

2010-01-01

395

40 CFR 86.429-78 - Maintenance, unscheduled; test vehicles.  

Code of Federal Regulations, 2013 CFR

...false Maintenance, unscheduled; test vehicles. 86.429-78 Section 86.429-78...EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES Emission Regulations for...429-78 Maintenance, unscheduled; test vehicles. (a) Any unscheduled...

2013-07-01

396

42 CFR 493.1254 - Standard: Maintenance and function checks.  

Code of Federal Regulations, 2011 CFR

... false Standard: Maintenance and function checks. 493.1254 Section 493...493.1254 Standard: Maintenance and function checks. (a) Unmodified manufacturer's...specified by the manufacturer. (2) Function checks as defined by the...

2011-10-01

397

42 CFR 493.1254 - Standard: Maintenance and function checks.  

Code of Federal Regulations, 2010 CFR

... false Standard: Maintenance and function checks. 493.1254 Section 493...493.1254 Standard: Maintenance and function checks. (a) Unmodified manufacturer's...specified by the manufacturer. (2) Function checks as defined by the...

2010-10-01

398

7 CFR 654.40 - Responsibility for operation and maintenance.  

Code of Federal Regulations, 2014 CFR

...NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE SUPPORT ACTIVITIES OPERATION AND MAINTENANCE Emergency Watershed Protection § 654.40 Responsibility for operation and maintenance. (a) Non-Federal lands. The need...

2014-01-01

399

7 CFR 654.41 - Performance of operation and maintenance.  

Code of Federal Regulations, 2014 CFR

...NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE SUPPORT ACTIVITIES OPERATION AND MAINTENANCE Emergency Watershed Protection § 654.41 Performance of operation and maintenance. (a) Arrangement. O&M is a prerequisite...

2014-01-01

400

7 CFR 654.40 - Responsibility for operation and maintenance.  

Code of Federal Regulations, 2012 CFR

...NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE SUPPORT ACTIVITIES OPERATION AND MAINTENANCE Emergency Watershed Protection § 654.40 Responsibility for operation and maintenance. (a) Non-Federal lands. The need...

2012-01-01

401

7 CFR 654.41 - Performance of operation and maintenance.  

Code of Federal Regulations, 2011 CFR

...NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE SUPPORT ACTIVITIES OPERATION AND MAINTENANCE Emergency Watershed Protection § 654.41 Performance of operation and maintenance. (a) Arrangement. O&M is a prerequisite...

2011-01-01

402

7 CFR 654.40 - Responsibility for operation and maintenance.  

Code of Federal Regulations, 2010 CFR

...NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE SUPPORT ACTIVITIES OPERATION AND MAINTENANCE Emergency Watershed Protection § 654.40 Responsibility for operation and maintenance. (a) Non-Federal lands. The need...

2010-01-01

403

7 CFR 654.41 - Performance of operation and maintenance.  

Code of Federal Regulations, 2013 CFR

...NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE SUPPORT ACTIVITIES OPERATION AND MAINTENANCE Emergency Watershed Protection § 654.41 Performance of operation and maintenance. (a) Arrangement. O&M is a prerequisite...

2013-01-01

404

7 CFR 654.40 - Responsibility for operation and maintenance.  

Code of Federal Regulations, 2011 CFR

...NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE SUPPORT ACTIVITIES OPERATION AND MAINTENANCE Emergency Watershed Protection § 654.40 Responsibility for operation and maintenance. (a) Non-Federal lands. The need...

2011-01-01

405

7 CFR 654.40 - Responsibility for operation and maintenance.  

Code of Federal Regulations, 2013 CFR

...NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE SUPPORT ACTIVITIES OPERATION AND MAINTENANCE Emergency Watershed Protection § 654.40 Responsibility for operation and maintenance. (a) Non-Federal lands. The need...

2013-01-01

406

7 CFR 654.41 - Performance of operation and maintenance.  

Code of Federal Regulations, 2010 CFR

...NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE SUPPORT ACTIVITIES OPERATION AND MAINTENANCE Emergency Watershed Protection § 654.41 Performance of operation and maintenance. (a) Arrangement. O&M is a prerequisite...

2010-01-01

407

7 CFR 654.41 - Performance of operation and maintenance.  

Code of Federal Regulations, 2012 CFR

...NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE SUPPORT ACTIVITIES OPERATION AND MAINTENANCE Emergency Watershed Protection § 654.41 Performance of operation and maintenance. (a) Arrangement. O&M is a prerequisite...

2012-01-01

408

Gas Turbine Technology, Part B: Components, Operations and Maintenance  

E-print Network

specifications are also reviewed. Practical aspects such as coatings, materials, fuel handling and auxiliary systems will also be highlighted. Operations and maintenance aspects including Preventative Maintenance, Repairs, Fuel and Air Filtration, Compressor...

Meher-Homji, C. B.; Focke, A. B.

409

50 CFR 600.410 - Collection and maintenance of statistics.  

Code of Federal Regulations, 2012 CFR

...false Collection and maintenance of statistics. 600.410 Section 600.410 ...MAGNUSON-STEVENS ACT PROVISIONS Confidentiality of Statistics § 600.410 Collection and maintenance of statistics. (a) General. (1) All...

2012-10-01

410

50 CFR 600.410 - Collection and maintenance of statistics.  

Code of Federal Regulations, 2011 CFR

...false Collection and maintenance of statistics. 600.410 Section 600.410 ...MAGNUSON-STEVENS ACT PROVISIONS Confidentiality of Statistics § 600.410 Collection and maintenance of statistics. (a) General. (1) All...

2011-10-01

411

32 CFR 2402.10 - Maintenance of statistics.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Maintenance of statistics. 2402.10 Section 2402.10 ...INFORMATION ACT § 2402.10 Maintenance of statistics. (a) OSTP shall maintain records...accurate reporting of FOIA processing statistics, as required under 5...

2013-07-01

412

50 CFR 600.410 - Collection and maintenance of statistics.  

Code of Federal Regulations, 2013 CFR

...false Collection and maintenance of statistics. 600.410 Section 600.410 ...MAGNUSON-STEVENS ACT PROVISIONS Confidentiality of Statistics § 600.410 Collection and maintenance of statistics. (a) General. (1) All...

2013-10-01

413

32 CFR 2402.10 - Maintenance of statistics.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 false Maintenance of statistics. 2402.10 Section 2402.10 ...INFORMATION ACT § 2402.10 Maintenance of statistics. (a) OSTP shall maintain records...accurate reporting of FOIA processing statistics, as required under 5...

2014-07-01

414

50 CFR 600.410 - Collection and maintenance of statistics.  

Code of Federal Regulations, 2010 CFR

...false Collection and maintenance of statistics. 600.410 Section 600.410 ...MAGNUSON-STEVENS ACT PROVISIONS Confidentiality of Statistics § 600.410 Collection and maintenance of statistics. (a) General. (1) All...

2010-10-01

415

40 CFR 52.975 - Redesignations and maintenance plans; ozone.  

Code of Federal Regulations, 2013 CFR

... Redesignations and maintenance plans; ozone. 52.975 Section 52.975 Protection... Redesignations and maintenance plans; ozone. Link to an amendment published at...these approvability issues in supplemental ozone redesignation requests and...

2013-07-01

416

40 CFR 52.975 - Redesignations and maintenance plans; ozone.  

Code of Federal Regulations, 2012 CFR

... Redesignations and maintenance plans; ozone. 52.975 Section 52.975 Protection... Redesignations and maintenance plans; ozone. (a) Approval. The...these approvability issues in supplemental ozone redesignation requests and...

2012-07-01

417

40 CFR 52.975 - Redesignations and maintenance plans; ozone.  

Code of Federal Regulations, 2011 CFR

... Redesignations and maintenance plans; ozone. 52.975 Section 52.975 Protection... Redesignations and maintenance plans; ozone. (a) Approval. The...these approvability issues in supplemental ozone redesignation requests and...

2011-07-01

418

40 CFR 52.975 - Redesignations and maintenance plans; ozone.  

Code of Federal Regulations, 2014 CFR

... Redesignations and maintenance plans; ozone. 52.975 Section 52.975 Protection... Redesignations and maintenance plans; ozone. (a) Approval. The...these approvability issues in supplemental ozone redesignation requests and...

2014-07-01

419

45 CFR 1309.23 - Insurance, bonding and maintenance.  

Code of Federal Regulations, 2011 CFR

... 4 2011-10-01 2011-10-01 false Insurance, bonding and maintenance. 1309.23 Section 1309.23 Public... Protection of Federal Interest § 1309.23 Insurance, bonding and maintenance. (a) At the time of...

2011-10-01

420

45 CFR 1309.23 - Insurance, bonding and maintenance.  

Code of Federal Regulations, 2013 CFR

... 4 2013-10-01 2013-10-01 false Insurance, bonding and maintenance. 1309.23 Section 1309.23 Public... Protection of Federal Interest § 1309.23 Insurance, bonding and maintenance. (a) At the time of...

2013-10-01

421

45 CFR 1309.23 - Insurance, bonding and maintenance.  

Code of Federal Regulations, 2012 CFR

... 4 2012-10-01 2012-10-01 false Insurance, bonding and maintenance. 1309.23 Section 1309.23 Public... Protection of Federal Interest § 1309.23 Insurance, bonding and maintenance. (a) At the time of...

2012-10-01

422

25 CFR 170.812 - What is emergency maintenance?  

Code of Federal Regulations, 2010 CFR

...Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER INDIAN RESERVATION ROADS PROGRAM BIA Road Maintenance...maintenance include: ice and snow control, traffic control, work in slide areas, repairs to drainage washouts, retrieving hazardous...

2010-04-01

423

40 CFR 52.975 - Redesignations and maintenance plans; ozone.  

Code of Federal Regulations, 2010 CFR

... Redesignations and maintenance plans; ozone. 52.975 Section 52.975 Protection... Redesignations and maintenance plans; ozone. (a) Approval. The...these approvability issues in supplemental ozone redesignation requests and...

2010-07-01

424

48 CFR 811.202 - Maintenance of standardization documents.  

Code of Federal Regulations, 2010 CFR

...Maintenance of standardization documents. 811.202 Section...Maintaining Requirements Documents 811.202 Maintenance of standardization documents. (a) Military and...either from DLA or from local dealers. (3)...

2010-10-01

425

48 CFR 811.202 - Maintenance of standardization documents.  

Code of Federal Regulations, 2011 CFR

...Maintenance of standardization documents. 811.202 Section...Maintaining Requirements Documents 811.202 Maintenance of standardization documents. (a) Military and...either from DLA or from local dealers. (3)...

2011-10-01

426

48 CFR 811.202 - Maintenance of standardization documents.  

Code of Federal Regulations, 2014 CFR

...Maintenance of standardization documents. 811.202 Section...Maintaining Requirements Documents 811.202 Maintenance of standardization documents. (a) Military and...either from DLA or from local dealers. (3)...

2014-10-01

427

48 CFR 811.202 - Maintenance of standardization documents.  

Code of Federal Regulations, 2012 CFR

...Maintenance of standardization documents. 811.202 Section...Maintaining Requirements Documents 811.202 Maintenance of standardization documents. (a) Military and...either from DLA or from local dealers. (3)...

2012-10-01

428

48 CFR 811.202 - Maintenance of standardization documents.  

Code of Federal Regulations, 2013 CFR

...Maintenance of standardization documents. 811.202 Section...Maintaining Requirements Documents 811.202 Maintenance of standardization documents. (a) Military and...either from DLA or from local dealers. (3)...

2013-10-01

429

40 CFR 35.636 - Maintenance of effort.  

Code of Federal Regulations, 2010 CFR

... 2010-07-01 false Maintenance of effort. 35.636 Section 35.636 Protection of Environment ENVIRONMENTAL PROTECTION...Source Management Grants (sections 319(h) and 518(f)) § 35.636 Maintenance of effort. To receive...

2010-07-01

430

40 CFR 35.636 - Maintenance of effort.  

Code of Federal Regulations, 2013 CFR

... 2013-07-01 false Maintenance of effort. 35.636 Section 35.636 Protection of Environment ENVIRONMENTAL PROTECTION...Source Management Grants (sections 319(h) and 518(f)) § 35.636 Maintenance of effort. To receive...

2013-07-01

431

40 CFR 35.636 - Maintenance of effort.  

Code of Federal Regulations, 2011 CFR

... 2011-07-01 false Maintenance of effort. 35.636 Section 35.636 Protection of Environment ENVIRONMENTAL PROTECTION...Source Management Grants (sections 319(h) and 518(f)) § 35.636 Maintenance of effort. To receive...

2011-07-01

432

40 CFR 35.636 - Maintenance of effort.  

Code of Federal Regulations, 2012 CFR

... 2012-07-01 false Maintenance of effort. 35.636 Section 35.636 Protection of Environment ENVIRONMENTAL PROTECTION...Source Management Grants (sections 319(h) and 518(f)) § 35.636 Maintenance of effort. To receive...

2012-07-01

433

40 CFR 35.636 - Maintenance of effort.  

Code of Federal Regulations, 2014 CFR

... 2014-07-01 false Maintenance of effort. 35.636 Section 35.636 Protection of Environment ENVIRONMENTAL PROTECTION...Source Management Grants (sections 319(h) and 518(f)) § 35.636 Maintenance of effort. To receive...

2014-07-01

434

45 CFR 1309.23 - Insurance, bonding and maintenance.  

Code of Federal Regulations, 2010 CFR

... 4 2010-10-01 2010-10-01 false Insurance, bonding and maintenance. 1309.23 Section 1309.23 Public... Protection of Federal Interest § 1309.23 Insurance, bonding and maintenance. (a) At the time of...

2010-10-01

435

Solving the 10 Most Common Carpet Problems.  

ERIC Educational Resources Information Center

Identifies the 10 most common carpet problems in school facilities and offers solutions. These include: transition areas, moisture, spot removal, recurring spots, cleaning agents, allergens, wicking, biological contamination, equipment selection, and cleaning methods. Ensuring a successful maintenance program results in satisfactory appearance,…

Hilton, Michael

1998-01-01

436

Direct television satellites: Prospects and problems  

Microsoft Academic Search

A general description is given of the direct broadcasting TV satellite and the technology required for signal reception. Problems related to the introduction of these satellites are outlined; they are mainly legal and economic. Future prospects such as the use of space transportation systems for launch and maintenance and the use of higher frequencies are discussed.

A. Lebeau

1977-01-01

437

Erection problems  

MedlinePLUS

... heart problems, or low testosterone A device you wear at night to check for normal nighttime erections Ultrasound of your penis to check for blood flow problems Rigidity monitoring to test how strong your erection is Psychological tests to ...

438

Walking Problems  

MedlinePLUS

... your legs or feet Movement disorders such as Parkinson's disease Diseases such as arthritis or multiple sclerosis Vision or balance problems Treatment of walking problems depends on the cause. Physical ...

439

MEDEMAS Medical Device Management and Maintenance System Architecture  

Microsoft Academic Search

\\u000a In the proposed study, a medical device maintenance management system (MEDEMAS) is designed and implemented which provides\\u000a a data pool of medical devices, the maintenance protocols and other required information for these devices. The system also\\u000a contains complete repair and maintenance history of a specific device. MEDEMAS creates optimal maintenance schedule for devices\\u000a and enables the service technician to carry

Yekta Ülgen; Mehmed Özkan

440

Application of fuzzy linear programming to maintenance scheduling  

SciTech Connect

In this paper initially, methods of fuzzy linear programming are discussed, which is then followed by an explanation of fuzzy 0-1 programming and finally the authors show how this method is applied to maintenance scheduling of a series of generators. Fuzzy linear 0-1 programming may be used for maintenance scheduling of generating units, this makes it possible to represent some of the maintenance constraints in flexible form and hence better suited to the requirements of maintenance personnel.

Noor, S.F.; McDonald, J.R. [Univ. of Strathclyde, Glasgow (United Kingdom). Centre for Electrical Power Engineering

1995-10-01

441

Classic Problems  

NSDL National Science Digital Library

Classic problems from the Ask Dr. Math FAQ (Frequently Asked Questions) files, including: age word problems, birthday probability, boy or girl?, camel and bananas, coin problems, doubling pennies, grazing animals, liars and truthtellers, the missing dollar, Monty Hall (three doors), three houses three utilities, the Tower of Hanoi, two trains, two trains and a fly, and working together.

Forum, Math; Math Forum; Ask Dr. Math FAQ

2002-01-01

442

Maintenance and storage of fuel oil for residential heating systems: A guide for residential heating system maintenance personnel  

SciTech Connect

The quality of No. 2 fuel affects the performance of the heating system and is an important parameter in the proper and efficient operation of an oil-burning system. The physical and chemical characteristics of the fuel can affect the flow, atomization and combustion processes, all of which help to define and limit the overall performance of the heating system. The use of chemical additives by fuel oil marketershas become more common as a method of improving the quality of the fuel, especially for handling and storage. Numerous types of additives are available, but reliable information on their effectiveness and proper use is limited. This makes selecting an additive difficult in many situations. Common types of problems that contribute to poor fuel quality and how they affect residential heating equipment are identified inof this booklet. It covers the key items that are needed in an effective fuel quality monitoring program, such as what to look for when evaluating the quality of fuel as it is received from a supplier, or how to assess fuel problems associated with poor storage conditions. References to standard procedures and brief descriptions of the procedures also are given. Approaches for correcting a fuel-related problem, including the potential uses of chemical additives are discussed. Different types of additives are described to help users understand the functions and limitations of chemical treatment. Tips on how to select andeffectively use additives also are included. Finally, the importance of preventative maintenance in any fuel monitoring program is emphasized.

Litzke, Wai-Lin

1992-12-01

443

Ground Software Maintenance Facility (GSMF) system manual  

NASA Technical Reports Server (NTRS)

The Ground Software Maintenance Facility (GSMF) is designed to support development and maintenance of spacelab ground support software. THE GSMF consists of a Perkin Elmer 3250 (Host computer) and a MITRA 125s (ATE computer), with appropriate interface devices and software to simulate the Electrical Ground Support Equipment (EGSE). This document is presented in three sections: (1) GSMF Overview; (2) Software Structure; and (3) Fault Isolation Capability. The overview contains information on hardware and software organization along with their corresponding block diagrams. The Software Structure section describes the modes of software structure including source files, link information, and database files. The Fault Isolation section describes the capabilities of the Ground Computer Interface Device, Perkin Elmer host, and MITRA ATE.

Derrig, D.; Griffith, G.

1986-01-01

444

Maintenance is key to competitiveness and reliability  

SciTech Connect

Good maintenance of power delivery systems is essential to customer satisfaction in the new competitive arena. Customers will be looking for competitively priced electricity that is safe and reliable. But, there are no standardized assessment and inspection procedures. Not all utilities have the personnel for in-house inspections and will use inspection services. One deficiency found fairly often is inadequate lightning protection and grounding systems. An electrical system is a complex and sensitive combination of electronics, instrumentation, process control, data processing, communications systems and electrical equipment. The use of robotics in power delivery system maintenance is relatively new in North America. Today`s demand for high quality and continuous service to a wide variety of customer needs and future expectations have already provided the road map for utility telerobotics.

Beaty, W.

1995-06-01

445

Laser technology for maintenance of nuclear piping  

SciTech Connect

As a part of R and D technologies for maintenance of piping in nuclear power plants, a cutting and welding device which integrates a high power CO{sub 2} laser and a high power YAG laser were developed, and their characteristics and qualities have been studied. As a result, it was found that in case of welding O{sub 2} gas assisted laser-cut joint, porosities in the weld zone disappeared, but the mechanical properties also decreased. Also, it was found that lap welding from the inside of the narrow tube (inner diameter: 10 mm) caused no porosity when N{sub 2} gas was applied as a shielding gas and that its welding quality proved the joint to be sound. This indicates that the piping maintenance technique using this cutting and welding device has promise for practical use because of its usefulness and reliability.

Kimura, Seiichiro; Kono, Wataru; Makino, Yoshinobu; Sakamoto, Hiroshi [Toshiba Corp., Tokyo (Japan). Heavy Apparatus Engineering Lab.; Ikeda, Masayuki [Hokkaido Univ. (Japan). Dept. of Precision Engineering

1995-11-01

446

Super resolution fluorescence microscopy  

PubMed Central

Achieving a spatial resolution that is not limited by the diffraction of light, recent developments of super-resolution fluorescence microscopy techniques allow the observation of many biological structures not resolvable in conventional fluorescence microscopy. New advances in these techniques now give them the ability to image three-dimensional (3D) structures, measure interactions by multicolor colocalization, and record dynamic processes in living cells at the nanometer scale. It is anticipated that super-resolution fluorescence microscopy will become a widely used tool for cell and tissue imaging to provide previously unobserved details of biological structures and processes. PMID:19489737

Huang, Bo; Bates, Mark; Zhuang, Xiaowei

2010-01-01

447

CELL BIOLOGY: Signaling Vascular Morphogenesis and Maintenance  

NSDL National Science Digital Library

Access to the article is free, however registration and sign-in are required. Blood vessels are formed and maintained by a family of soluble factors that interact with tyrosine kinase receptors on the endothelial cell surface. A new angiogenesis factor (Ang2) is reported in an article by Maisonpierre et al. in this week's issue. Hanahan describes what is known about the process of vascular morphogenesis and maintenance and how this new factor fits into this complex regulatory system.

Douglas Hanahan (University of California at San Francisco; Department of Biochemistry and Biophysics and the Hormone Research Institute)

1997-07-04

448

Maintenance cost study of rotary wing aircraft  

NASA Technical Reports Server (NTRS)

The feasibility was studied of predicting rotary wing operation maintenance costs by using several aircraft design factors for the aircraft dynamic systems. The dynamic systems considered were engines, drives and transmissions, rotors, and flight controls. Multiple regression analysis was used to correlate aircraft design and operational factors with manhours per flight hour, and equations for each dynamic system were developed. Results of labor predictions using the equations compare favorably with actual values.

1977-01-01

449

Operating and maintenance guidelines for screenbowl centrifuges  

SciTech Connect

Plant dewatering circuits equipped with screenbowl centrifuges need to be well designed, properly operated, and adequately maintained to maximize the dewatering performance. The most important 'feed variables' are particle size, dry solids feed rate and slurry flow rate. The most important 'machine variables' include pool depth, rotational speed and gearbox ratio. The article discusses the effect of these parameters and offers some maintenance guidelines. The article was adapted from a paper presented at CoalPrep 2008. 6 refs., 2 figs., 2 tabs.

Jahnig, W.S.R.; Bratton, R.; Luttrell, G. [Decanter Machine, Johnson City, TN (United States)

2009-01-15

450

Safety assured financial evaluation of maintenance  

E-print Network

to upgrade - degradation of SGs relation...............................................22 Figure 19. Simplified layout of PWR-design reactor.......................................................25 Figure 20. Schematic of the SAFE-M model ("A" stands... to implement the RIAM concept on their other systems, expecting by some time in the future to cover all systems one by one. The goal for this dissertation was to develop a model of a PWR-design nuclear power plant, and to demonstrate how maintenance...

Erguina, Vera

2004-09-30

451

Maintenance of tropical tropopause layer cirrus  

Microsoft Academic Search

A two-dimensional cloud resolving model with explicit bin microphysics is used to study the maintenance of tropical tropopause layer (TTL) cirrus. Numerical simulations using this model show that a TTL cirrus with a maximum radiative heating rate of 3 K\\/day is able to self-maintain for as long as 2 days if it contains ice crystals whose initial mean radius is

T. P. Dinh; D. R. Durran; T. P. Ackerman

2010-01-01

452

Mechanical Loading: Bone Remodeling and Cartilage Maintenance  

Microsoft Academic Search

Bone remodeling and cartilage maintenance are strongly influenced by biomechanical signals generated by mechanical loading.\\u000a Although moderate loading is required to maintain bone mass and cartilage homeostasis, loading can cause deleterious effects\\u000a such as bone fracture and cartilage degradation. Because a tight coupling exists between cartilage and bone, alterations in\\u000a one tissue can affect the other. Bone marrow lesions are

Hiroki Yokota; Daniel J. Leong; Hui B. Sun

453

Evaluation of In-House versus Contract Computer Hardware Maintenance  

SciTech Connect

The issue of In-House versus Contract Computer Hardware Maintenance is one which every organization who uses computers must resolve. This report discusses the advantages and disadvantages of both approaches to computer maintenance, the costs involved (based on the current AGNS computer inventory), and the AGNS maintenance experience to date. A recommendation on an appropriate approach for AGNS is made.

Wright, H.P.

1981-09-01

454

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

455

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

456

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

457

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

458

Expressway Maintenance Decision Support System Based on GIS  

Microsoft Academic Search

In road maintenance management, the most important thing is to reduce the unreasonable investment, saving maintenance costs, ensuring all the data of road conditions the accuracy, we must take advantage of computerized technology to make up for shortage of primary management system. Above all we analyze factual requirement about highway maintenance and management system, then we design the frame and

Quanwen Li; Feng Xie

2010-01-01

459

Development on preventive maintenance management system for expressway asphalt pavements  

Microsoft Academic Search

In view of the status that there was no expressway pavement preventive maintenance management system at home and abroad at present, based on the technology theory obtained by the author and the demands and process of expressway asphalt pavement preventive maintenance management, preventive maintenance management system for expressway asphalt pavement (EPMMS (V1.0)) was developed. The work or functions of expressway

Hu Guoxiang; Li Jie

2010-01-01

460

Regular Inspection and Maintenance Guidance for Porous Pavements  

E-print Network

Regular Inspection and Maintenance Guidance for Porous Pavements Regular inspection and maintenance is critical to the effective operation of porous pavement. It is the responsibility of the owner to maintain the pavement in accordance with the minimum design standards. This page provides guidance on maintenance

461

Maintenance: the key to successful periodontal and implant therapy.  

PubMed

The management of periodontal diseases requires an effective treatment and maintenance program, as well as collaboration among clinicians. Having a better understanding of the factors contributing to periodontal maintenance is key. The components of a maintenance program and determining proper intervals ensure that patients increase their chances for maintaining their teeth and implants in an optimal state of health. PMID:25279534

McClain, Pamela K

2014-09-01

462

Team training: role of computers in the aircraft maintenance environment  

Microsoft Academic Search

Research on civil aircraft inspection and maintenance has shown the importance of teamwork in the aircraft maintenance environment. In addition, training has been identified as one of the primary intervention strategies in improving team performance. With improvements in technology-based training devices, it may be possible to provide aircraft maintenance technicians with training tools to help enhance their team skills and

David Kraus; Anand K Gramopadhye

1999-01-01

463

An adaptive-learning expert system for maintenance diagnostics  

Microsoft Academic Search

The Artificial Intelligence Applications to O-level Maintenance (AIATOM) expert system is the product of research into how artificial intelligence experience-based learning can improve the accuracy and cost effectiveness of fault diagnosis in a military maintenance environment. An adaptive diagnostic maintenance advisor, developed using LISP on a VAX system, learns new symptoms and forms new associations between sets of known symptoms

LUC P. TRAN; JOHN P. HANCOCK

1989-01-01

464

Regular Inspection and Maintenance Guidance for Bioretention Systems / Tree Filters  

E-print Network

3 Regular Inspection and Maintenance Guidance for Bioretention Systems / Tree Filters Maintenance of bioretention systems and tree filters can typically be performed as part of standard landscaping. Regular inspection and maintenance is critical to the effective operation of bioretention systems and tree filters

465

Regular Inspection and Maintenance Guidance for Bioretention Systems / Tree Filters  

E-print Network

Regular Inspection and Maintenance Guidance for Bioretention Systems / Tree Filters Maintenance of bioretention systems and tree filters can typically be performed as part of standard landscaping. Regular inspection and maintenance is critical to the effective operation of bioretention systems and tree filters

466

Dopaminergic System in Birdsong Learning and Maintenance  

PubMed Central

Dopamine function in birdsong has been studied extensively in recent years. Several song and auditory nuclei are innervated by midbrain dopaminergic fibers and contain neurons with various dopamine receptors. During sexually motivated singing, activity of midbrain dopaminergic neurons in the ventral tegmental area and dopamine release in the striatal Area X, involved in song learning and maintenance, are higher. In this review we provide an overview of the dopaminergic system and neurotransmission in songbirds and the outline of possible involvement of dopamine in control of song learning, production, and maintenance. Based on both behavioral and computational biology data, we describe several models of song learning and the proposed role of dopamine in them. Special attention is given to possible role of dopamine in incentive salience (wanting) and reward prediction error signaling during song learning and maintenance, as well as the role of dopamine-mediated synaptic plasticity in reward processing. Finally, the role of dopamine in determination of personality traits in relation to birdsong is discussed. PMID:19900537

Kubikova, Lubica; Košt’ál, L’ubor

2009-01-01

467

Human RECQL1 participates in telomere maintenance  

PubMed Central

A variety of human tumors employ alternative and recombination-mediated lengthening for telomere maintenance (ALT). Human RecQ helicases, such as BLM and WRN, can efficiently unwind alternate/secondary structures during telomere replication and/or recombination. Here, we report a novel role for RECQL1, the most abundant human RecQ helicase but functionally least studied, in telomere maintenance. RECQL1 associates with telomeres in ALT cells and actively resolves telomeric D-loops and Holliday junction substrates. RECQL1 physically and functionally interacts with telomere repeat-binding factor 2 that in turn regulates its helicase activity on telomeric substrates. The telomeric single-stranded binding protein, protection of telomeres 1 efficiently stimulates RECQL1 on telomeric substrates containing thymine glycol, a replicative blocking lesion. Loss of RECQL1 results in dysfunctional telomeres, telomere loss and telomere shortening, elevation of telomere sister-chromatid exchanges and increased aphidicolin-induced telomere fragility, indicating a role for RECQL1 in telomere maintenance. Further, our results indicate that RECQL1 may participate in the same pathway as WRN, probably in telomere replication. PMID:24623817

Popuri, Venkateswarlu; Hsu, Joseph; Khadka, Prabhat; Horvath, Kent; Liu, Yie; Croteau, Deborah L.; Bohr, Vilhelm A.

2014-01-01

468

Achieving sub-10-nm resolution using scanning electron beam lithography  

E-print Network

Achieving the highest possible resolution using scanning-electron-beam lithography (SEBL) has become an increasingly urgent problem in recent years, as advances in various nanotechnology applications have driven demand for ...

Cord, Bryan M. (Bryan Michael), 1980-

2009-01-01

469

Creative Conflict Resolution  

NSDL National Science Digital Library

Creative Conflict Resolution is an instructional technique tailor-made for examining science and society issues. This technique provides an excellent forum for students to present data and discuss their findings with their peers. Conflict exists

JoAnne Vasquez

1999-09-01

470

Resolutions of Aloneliness.  

ERIC Educational Resources Information Center

"Aloneliness" includes such states as loneliness, solitude, alienation, and isolation. Resolution must be an individual issue with each client. Coping and conquering strategies can help individuals adapt and establish meaningful realtionships. (JAC)

Kubistant, Tom M.

1981-01-01

471

Conflict Management Resolution.  

ERIC Educational Resources Information Center

Outlines the Mt Diablo High School (CA) conflict resolution program that has become a model program. In its first two years it has been responsible for a 67 percent reduction in the number of student conflicts. (MD)

Faconti, Pietro

1987-01-01

472

Shower counter resolution scaling  

SciTech Connect

The EM shower counter for the SDC detector has a resolution expression containing two stochastic terms plus a constant term. Recent measurements clarifying the sources of these terms are presented here. 3 refs., 4 figs.

Kirk, T.B.W.

1991-10-14

473

Constrained Graph Optimization: Interdiction and Preservation Problems  

SciTech Connect

The maximum flow, shortest path, and maximum matching problems are a set of basic graph problems that are critical in theoretical computer science and applications. Constrained graph optimization, a variation of these basic graph problems involving modification of the underlying graph, is equally important but sometimes significantly harder. In particular, one can explore these optimization problems with additional cost constraints. In the preservation case, the optimizer has a budget to preserve vertices or edges of a graph, preventing them from being deleted. The optimizer wants to find the best set of preserved edges/vertices in which the cost constraints are satisfied and the basic graph problems are optimized. For example, in shortest path preservation, the optimizer wants to find a set of edges/vertices within which the shortest path between two predetermined points is smallest. In interdiction problems, one deletes vertices or edges from the graph with a particular cost in order to impede the basic graph problems as much as possible (for example, delete edges/vertices to maximize the shortest path between two predetermined vertices). Applications of preservation problems include optimal road maintenance, power grid maintenance, and job scheduling, while interdiction problems are related to drug trafficking prevention, network stability assessment, and counterterrorism. Computational hardness results are presented, along with heuristic methods for approximating solutions to the matching interdiction problem. Also, efficient algorithms are presented for special cases of graphs, including on planar graphs. The graphs in many of the listed applications are planar, so these algorithms have important practical implications.

Schild, Aaron V [Los Alamos National Laboratory

2012-07-30

474

Protocol-based conflict resolution for finite information horizon  

Microsoft Academic Search

Proposes a protocol-based multiple aircraft conflict resolution for a finite information horizon, in which the communication range of an aircraft is finite. A protocol for multiple aircraft conflict resolution for an infinite information horizon is presented and then this protocol is extended to a finite information horizon problem using graph theory. Communication topology among aircraft is important for the finite

Inseok Hwang; Claire Tomlin

2002-01-01

475

Resolution of Conflicts Involving Many Aircraft via Semidefinite Programming  

Microsoft Academic Search

Aircraft conèict detection and resolution is currently attracting the interest of many air transportation service providersand isconcernedwiththefollowingquestion: Given aset ofairborneaircraftand theirintended trajecto- ries,whatcontrolstrategyshould befollowedbythepilotsand theairtrafécserviceprovidertopreventtheaircraft from coming too close to each other? This paper addresses this problem by presenting a resolution methodology whereby each aircraft proposes its desired heading while a centralized air trafé c control authority resolves any conè

E. Frazzoli; Z.-H. Mao; J.-H. Oh; E. Feron

2001-01-01

476

High-Resolution Autoradiography  

NASA Technical Reports Server (NTRS)

This investigation was made to adapt wet-process autoradiography to metallurgical samples to obtain high resolution of segregated radioactive elements in microstructures. Results are confined to development of the technique, which was perfected to a resolution of less than 10 microns. The radioactive samples included carbon-14 carburized iron and steel, nickel-63 electroplated samples, a powder product containing nickel-63, and tungsten-185 in N-155 alloy.

Towe, George C; Gomberg, Henry J; Freemen, J W

1955-01-01

477

High-Resolution Paleoclimatology  

Microsoft Academic Search

\\u000a High resolution paleoclimatology involves studies of natural archives as proxies for past climate variations at a temporal\\u000a scale that is comparable to that of instrumental data. In practice, this generally means annually resolved records, from tree\\u000a rings, ice cores, banded corals, laminated speleothems and varved sediments. New analytical techniques offer many unexplored\\u000a avenues of research in high resolution paleoclimatology. However,

Raymond S. Bradley

478

Ultrahigh resolution AMOLED  

Microsoft Academic Search

AMOLED microdisplays continue to show improvement in resolution and optical performance, enhancing their appeal for a broad range of near-eye applications such as night vision, simulation and training, situational awareness, augmented reality, medical imaging, and mobile video entertainment and gaming. eMagin's latest development of an HDTV+ resolution technology integrates an OLED pixel of 3.2 × 9.6 microns in size on

Ihor Wacyk; Olivier Prache; Amal Ghosh

2011-01-01

479

10.1177/0146167203253124 ARTICLEPERSONALITY AND SOCIAL PSYCHOLOGY BULLETINJosephs et al. / SELF-ESTEEM MAINTENANCE Self-Esteem Maintenance Processes  

E-print Network

for their assistance with data collection. Correspondence con- cerning this article should be directed to Robert A-ESTEEM MAINTENANCE Self-Esteem Maintenance Processes: Why Low Self-Esteem May Be Resistant to Change Robert A on many of the mechanisms that promote maintenance of high self-esteem (e.g., Steele, 1988; Taylor & Brown

Josephs, Robert

480

Reduced Energy and Maintenance Costs Using Polyurethane as a Replacement Roof System  

E-print Network

of the maintenance problems associated with built-up roofs. Standard specifications for this replacement roof were developed, requiring the application of 2 inches of polyurethane foam and 45 mils of a urethane coating. The result being a monolithic weatherproof.... The black surface helps to elevate the surface temperature which aids the foaming action of the urethane. 4. Application of Protective Coatings. Coatings are applied in three layers of 15 mils each with each coat a different color, for a total thickness...

Scott, G. D.

481

Everolimus and reduced cyclosporine trough levels in maintenance heart transplant recipients  

Microsoft Academic Search

BackgroundLong-term survival of patients after oHTX significantly increased over the last years, but CAV and chronic renal failure due to nephrotoxic side-effects of CNIs still remain unsolved problems. Everolimus has shown to reduce acute cellular rejection and may allow CsA dosage reduction. In this study the effectiveness of Everolimus in combination with CsA dosage reduction in maintenance oHTX immunosuppression and

Martin Schweiger; Andre Wasler; Guenther Prenner; Philipp Stiegler; Vanessa Stadlbauer; Michaela Schwarz; Karlheinz Tscheliessnigg

2006-01-01

482

Single shot high resolution digital holography.  

PubMed

We demonstrate a novel computational method for high resolution image recovery from a single digital hologram frame. The complex object field is obtained from the recorded hologram by solving a constrained optimization problem. This approach which is unlike the physical hologram replay process is shown to provide high quality image recovery even when the dc and the cross terms in the hologram overlap in the Fourier domain. Experimental results are shown for a Fresnel zone hologram of a resolution chart, intentionally recorded with a small off-axis reference beam angle. Excellent image recovery is observed without the presence of dc or twin image terms and with minimal speckle noise. PMID:23481715

Khare, Kedar; Ali, P T Samsheer; Joseph, Joby

2013-02-11

483

Application and Preventive Maintenance of Neurology Medical Equipment in Isfahan Alzahra Hospital  

PubMed Central

Background: Nowadays Medical equipment plays an important role in the treatment and in the medical education. Using outdated preventive maintenance (PM) system may cause problems in the cutting edge medical equipment, Nervous system disease's equipment (In diagnosis and treatment) which are crucial for every medical center. Based on above facts we focused on nervous system treat units’ equipment and informed the supervisors and their colleagues about the latest equipment maintenance status and promoted methodical and correct method to be used for medical equipment maintenance. Methods: This research is an analytical descriptive and has been done on the base information from a particular time to past. We gathered our required information of 2009 from Alzahra Medical Center. We divided this research info 2 main phases. In the first phase, we picked out Neurosurgery and Neourology diseases medical equipment (diagnosis and therapy equipment) and in the second phase, we need to implement a methodical PM for every equipment. Results: Research has shown that there are 19nervous system equipment in Alzahra Medical center, categorized in diagnostic (13 pcs), therapeutic (4 pcs) and diagnostic-therapeutic (2 pcs). As we declare in methods part of this research, we categorized medical equipment in Food and Drug Administration (FDA) segmentation. Capital-scarce equipment: Magnetic resonance imaging, Eco Doppler, Kamalaarak ultrasonic surgical aspirator, Stereotactic, computed tomography-scan, euroendoscope/vital-scarce equipment: Coblation, Sonoco, vaterjet/scarce equipment: Transcranial color Doppler, electroencephalogram, electromyography, surgical microscope. Conclusions: Survey of application and preventive maintenance of neurology medical equipment in Isfahan Alzahra hospital show there is no P.M system. Implementing a complete P.M system for this medical center is crucial to preventing cause problems for these medical equipment and decreasing maintenance costs and gaining uptime. Researchers of this article have tried to provide PM, use of texts, web and experts. PMID:23776746

Alikhani, Parivash; Vesal, Sahar; Kashefi, Parviz; Pour, Ramin Etamadi; Khorvash, Fariborz; Askari, Gholamreza; Meamar, Rokhsareh

2013-01-01

484

Weekly Problems  

NSDL National Science Digital Library

This is an archive of previous problems from "Math by the Month", a regular department of Teaching Children Mathematics Journal from NCTM for K-5 teachers that features activities organized by grades K-2 and grades 3-5 and usually based on a theme associated with the particular month. Activities and problems posed are classroom-tested with an inquiry or problem-solving orientation.

2011-01-01

485

Knee Problems  

MedlinePLUS

... medicine, nursing, dentistry, veterinary medicine, the health care system, and preclinical sciences. Where Can People Find More Information About Knee Problems? National Institute of Arthritis and ...

486

Generalized radar/radiometry imaging problems  

E-print Network

Paper Generalized radar/radiometry imaging problems Ivan Prudyus, Sviatoslav Voloshynovskiy, Andriy- ing simulation based on radar, synthetic aperture radar (SAR) and radiometry systems are presented systems, synthetic aperture radar, spatio-temporal imaging. 1. Introduction Resolution of radar

Genève, Université de

487

Incremental Query Rewriting with Resolution  

NASA Astrophysics Data System (ADS)

We address the problem of semantic querying of relational databases (RDB) modulo knowledge bases using very expressive knowledge representation formalisms, such as full first-order logic or its various fragments. We propose to use a resolution-based first-order logic (FOL) reasoner for computing schematic answers to deductive queries, with the subsequent translation of these schematic answers to SQL queries which are evaluated using a conventional relational DBMS. We call our method incremental query rewriting, because an original semantic query is rewritten into a (potentially infinite) series of SQL queries. In this chapter, we outline the main idea of our technique - using abstractions of databases and constrained clauses for deriving schematic answers, and provide completeness and soundness proofs to justify the applicability of this technique to the case of resolution for FOL without equality. The proposed method can be directly used with regular RDBs, including legacy databases. Moreover, we propose it as a potential basis for an efficient Web-scale semantic search technology.

Riazanov, Alexandre; Aragão, Marcelo A. T.

488

An Evaluation of the Generalization and Maintenance of Functional Communication and Self-Control Skills with Preschoolers  

ERIC Educational Resources Information Center

The preschool life skills (PLS) program (Hanley, Heal, Tiger, & Ingvarsson, 2007; Luczynski & Hanley, 2013) involves teaching social skills as a means of decreasing and preventing problem behavior. However, achieving durable outcomes as children transition across educational settings depend on the generalization and long-term maintenance

Luczynski, Kevin C.; Hanley, Gregory P.; Rodriguez, Nicole M.

2014-01-01

489

Copyright 2001 by the Genetics Society of America Recessive Mutations and the Maintenance of Sex in Structured Populations  

E-print Network

genera- can result in a substantial advantage to sexual reproduc- tion is tion over asexual reproduction The evolutionary maintenance of sexual reproduction remains a controversial problem. It was recently shown that recessive deleterious mutations create differences in the mutation load of sexual vs. asexual populations

Chasnov, Jeffrey R.

490

An Educational Program for Sub-Professional Personnel to be Employed in Health Maintenance Organizations. Final Report.  

ERIC Educational Resources Information Center

Through Medicaid, the Health Maintenance Organization Act (HMO), and Prepaid Health Programs (PHP) approaches were established whereby the government can help alleviate the medical problems of the needy. A program to educate and train students in California in the philosophy, administration, and development of PHP was developed in response to…

HMO Management, Inc., Los Angeles, CA.

491

Inverse problems in astronomical adaptive optics  

Microsoft Academic Search

Adaptive optics (AO) is a technology used in ground-based astronomy to correct for the wavefront aberrations and loss of image quality caused by atmospheric turbulence. Provided some difficult technical problems can be overcome, AO will enable future astronomers to achieve nearly diffraction-limited performance with the extremely large telescopes that are currently under development, thereby greatly improving spatial resolution, spectral resolution

B L Ellerbroek; C R Vogel

2009-01-01

492

High-resolution numerical simulations for galaxy formation  

E-print Network

Understanding of the structure evolution in the Universe has been greatly advanced with a rapid progress in high-resolution cosmological simulations. In this contribution, we report a new set of cosmological simulations with $512^3$ ($\\sim 1.4\\times 10^8$) particles in a simulation box of $100\\mpc$. With this unprecedented resolution, we have successfully overcomed the over-merging problem while retaining a cosmological volume size that is crucial for the statistical analysis. The simulations are being applied to studying important astrophysical problems that are sensitive to the simulation resolution.

Y. P. Jing; Yasushi Suto

2002-01-10

493

Quantifying tomographic model resolution using higher-order adjoint methods  

NASA Astrophysics Data System (ADS)

We consider the definition of model resolution in non-linear inverse problems, and describe some practical methods for its quantification. To do so, we describe a simple extension of the adjoint method that enables the calculation of higher-order Fréchet derivatives, and show how they can be employed in estimates of model resolution. In particular, we focus on computing the action of the resolution operator associated with the iterative solution of an inverse problems for which the Hessian at a local minima is singular.

Al-Attar, D.

2013-12-01

494

OASIS, LLNL version: Software maintenance manual  

NASA Astrophysics Data System (ADS)

The OASIS laser beam propagation code has been used extensively to support design and analysis in the Free Electron Laser Master Oscillator Program, the Medium Power Solid State Laser Program, and the Active Optical Countermeasures Program. The version of OASIS currently used at the Lawrence Livermore National Laboratory (LLNL) is significantly enhanced compared to the initial version supplied by the Air Force Weapons Laboratory. This software maintenance manual presents the details of the LLNL version of OASIS so it can be modified as necessary by new personnel. The manual presents in great detail the content and organization of the OASIS software.

Auerbach, J. M.

1990-03-01

495

Growth and Maintenance of Thiobacillus ferrooxidans Cells  

PubMed Central

A rapid and sensitive spectrophotometric procedure was developed for monitoring the growth of Thiobacillus ferrooxidans in liquid culture. Values determined for the optical densities at 500 nm of washed T. ferrooxidans cell suspensions were directly proportional to both total cell number and total cell protein concentration and provided an accurate measurement of culture growth rate. The utility of this procedure was demonstrated by conducting physiological studies on the influence of CO2 and FeSO4 availability on the growth of T. ferrooxidans. In addition, we describe a procedure for the long-term maintenance of cells T. ferrooxidans that ensures culture purity and genetic stability. PMID:16348288

Barron, Jean LaCombe; Lueking, Donald R.

1990-01-01

496

Reliability based fatigue design and maintenance procedures  

NASA Technical Reports Server (NTRS)

A stochastic model has been developed to describe a probability for fatigue process by assuming a varying hazard rate. This stochastic model can be used to obtain the desired probability of a crack of certain length at a given location after a certain number of cycles or time. Quantitative estimation of the developed model was also discussed. Application of the model to develop a procedure for reliability-based cost-effective fail-safe structural design is presented. This design procedure includes the reliability improvement due to inspection and repair. Methods of obtaining optimum inspection and maintenance schemes are treated.

Hanagud, S.

1977-01-01

497

Plant maintenance and advanced reactors issue, 2004  

SciTech Connect

The focus of the September-October issue is on plant maintenance and advanced reactors. Major articles/reports in this issue include: Optimism about the future of nuclear power, by Ruth G. Shaw, Duke Power Company; Licensed in three countries, by GE Energy; Enhancing public acceptance, by Westinghouse Electric Company; Standardized MOV program, by Ted Neckowicz, Exelon; Inservice testing, by Steven Unikewicz, U.S. Nuclear Regulatory Commission; Asian network for education, Fatimah Mohd Amin, Malaysian Institute for Nuclear Technology Research; and, Cooling water intake optimization, by Jeffrey M. Jones and Bert Mayer, P.E., Framatome ANP.

Agnihotri, Newal (ed.)

2004-09-15

498

Shuttle Repair Tools Automate Vehicle Maintenance  

NASA Technical Reports Server (NTRS)

Successfully building, flying, and maintaining the space shuttles was an immensely complex job that required a high level of detailed, precise engineering. After each shuttle landed, it entered a maintenance, repair, and overhaul (MRO) phase. Each system was thoroughly checked and tested, and worn or damaged parts replaced, before the shuttle was rolled out for its next mission. During the MRO period, workers needed to record exactly what needed replacing and why, as well as follow precise guidelines and procedures in making their repairs. That meant traceability, and with it lots of paperwork. In 2007, the number of reports generated during electrical system repairs was getting out of hand-placing among the top three systems in terms of paperwork volume. Repair specialists at Kennedy Space Center were unhappy spending so much time at a desk and so little time actually working on the shuttle. "Engineers weren't spending their time doing technical work," says Joseph Schuh, an electrical engineer at Kennedy. "Instead, they were busy with repetitive, time-consuming processes that, while important in their own right, provided a low return on time invested." The strain of such inefficiency was bad enough that slow electrical repairs jeopardized rollout on several occasions. Knowing there had to be a way to streamline operations, Kennedy asked Martin Belson, a project manager with 30 years experience as an aerospace contractor, to co-lead a team in developing software that would reduce the effort required to document shuttle repairs. The result was System Maintenance Automated Repair Tasks (SMART) software. SMART is a tool for aggregating and applying information on every aspect of repairs, from procedures and instructions to a vehicle s troubleshooting history. Drawing on that data, SMART largely automates the processes of generating repair instructions and post-repair paperwork. In the case of the space shuttle, this meant that SMART had 30 years worth of operations that it could apply to ongoing maintenance work. According to Schuh, "SMART standardized and streamlined many shuttle repair processes, saving time and money while increasing safety and the quality of repairs." Maintenance technicians and engineers now had a tool that kept them in the field, and because SMART is capable of continually evolving, each time an engineer put it to use, it would enrich the Agency-wide knowledge base. "If an engineer sees something in the work environment that they could improve, a repair process or a procedure, SMART can incorporate that data for use in future operations," says Belson.

2013-01-01

499

Health maintenance facility: Dental equipment requirements  

NASA Technical Reports Server (NTRS)

The objectives were to test the effectiveness of the Health Maintenance Facility (HMF) dental suction/particle containment system, which controls fluids and debris generated during simulated dental treatment, in microgravity; to test the effectiveness of fiber optic intraoral lighting systems in microgravity, while simulating dental treatment; and to evaluate the operation and function of off-the-shelf dental handheld instruments, namely a portable dental hand drill and temporary filling material, in microgravity. A description of test procedures, including test set-up, flight equipment, and the data acquisition system, is given.

Young, John; Gosbee, John; Billica, Roger

1991-01-01

500

Year 2000 TWRS Maintenance procedure review report  

SciTech Connect

A concern exists that some equipment in use might contain microprocessors that are dependent upon a time date function. The majority of the software programming for microprocessors has only utilized a 2 digit identifier for the year. With the approach of the year 2000, (Y2K), there is concern that the date function will not be correctly recognized and some functions will not operate properly. TWRS maintenance procedures have been reviewed to identify equipment components that may not be Y2K compliant. Engineering judgment was utilized to eliminate procedures and equipment that is obviously not impacted by Y2K.

ADAMS, M.R.

1999-02-24