Science.gov

Sample records for maintenance problem resolution

  1. Detection of structural deterioration and associated airline maintenance problems

    NASA Technical Reports Server (NTRS)

    Henniker, H. D.; Mitchell, R. G.

    1972-01-01

    Airline operations involving the detection of structural deterioration and associated maintenance problems are discussed. The standard approach to the maintenance and inspection of aircraft components and systems is described. The frequency of inspections and the application of preventive maintenance practices are examined. The types of failure which airline transport aircraft encounter and the steps taken to prevent catastrophic failure are reported.

  2. The Public School Infrastructure Problem: Deteriorating Buildings and Deferred Maintenance

    ERIC Educational Resources Information Center

    Hunter, Richard C.

    2009-01-01

    The deterioration of public school buildings is more prevalent in large cities that, because of funding shortfalls, have deferred maintenance and require huge sums to bring their buildings up to acceptable standards. Cities such as New York will require approximately $680 million to address the problem of deferred maintenance for needed painting,…

  3. Ground-water problems in highway construction and maintenance

    USGS Publications Warehouse

    Rasmussen, W.C.; Haigler, L.B.

    1953-01-01

    This report discusses the occurrence of ground water in relation to certain problems in highway construction and maintenance. These problems are: the subdrainage of roads; quicksand; the arrest of soil creep in road cuts; the construction of lower and larger culverts necessitated by the farm-drainage program; the prevention of failure of bridge abutments and retaining walls; and the water-cement ratio of sub-water-table concrete. Although the highway problems and suggested solutions are of general interest, they are considered with special reference to the State of Delaware, in relation to the geology of that State. The new technique of soil stabilization by electroosmosis is reviewed in the hope that it might find application here in road work and pile setting, field application by the Germans and Russians is reviewed.

  4. JIT single machine scheduling problem with periodic preventive maintenance

    NASA Astrophysics Data System (ADS)

    Shahriari, Mohammadreza; Shoja, Naghi; Zade, Amir Ebrahimi; Barak, Sasan; Sharifi, Mani

    2016-03-01

    This article investigates a JIT single machine scheduling problem with a periodic preventive maintenance. Also to maintain the quality of the products, there is a limitation on the maximum number of allowable jobs in each period. The proposed bi-objective mixed integer model minimizes total earliness-tardiness and makespan simultaneously. Due to the computational complexity of the problem, multi-objective particle swarm optimization (MOPSO) algorithm is implemented. Also, as well as MOPSO, two other optimization algorithms are used for comparing the results. Eventually, Taguchi method with metrics analysis is presented to tune the algorithms' parameters and a multiple criterion decision making technique based on the technique for order of preference by similarity to ideal solution is applied to choose the best algorithm. Comparison results confirmed the supremacy of MOPSO to the other algorithms.

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

    SciTech Connect

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

    2014-12-10

    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.

  6. The Resolution of Health Problems in School Children.

    ERIC Educational Resources Information Center

    Oda, Dorothy S.; And Others

    1985-01-01

    School health services work towards promoting and maintaining health of school-age children. An additional aspect of an effective program is to identify problems and manage or follow these problems to resolution. Resolution rates of health problems identified in students by primary care, physical examination, or screenings are examined. (Author/DF)

  7. Approximate resolution of hard numbering problems

    SciTech Connect

    Bailleux, O.; Chabrier, J.J.

    1996-12-31

    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.

  8. 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...

  9. Interventions for Weight Reduction: Facing the Maintenance Problem

    ERIC Educational Resources Information Center

    Anderson, Drew A.; Simmons, Angela M.; Milnes, Suzanne M.

    2005-01-01

    Behavioral treatments are perhaps the cornerstone of modern obesity treatment. Maintenance of weight lost via behavioral treatments has been less than hoped for, however. Weight regain is the result of complex interactions between physiological, behavioral, cognitive, and environmental factors; in this paper we review some of these factors and…

  10. Predictors of children's sleep onset and maintenance problems after road traffic accidents

    PubMed Central

    Wittmann, Lutz; Zehnder, Daniel; Jenni, Oskar G.; Landolt, Markus A.

    2012-01-01

    Background Sleep onset and maintenance problems are a frequent complaint after traumatic events in children. However, the association of traumatic experiences and disturbed sleep remains to be explained. Objective To examine the incidence of sleep onset and maintenance problems in children after road traffic accidents and identify potential predictors of sleep onset and maintenance problems, including putative psychopathological mechanisms as well as stressors affecting the family system. Method In 33 children treated for injuries after road traffic accidents, sleep and measures of psychopathology were assessed 10 days, 2 months, and 6 months after hospital admission. The predictive value of four clusters of predictor variables for children's sleep onset and maintenance problems was prospectively tested by multiple regression analyses. These clusters included socio-demographic, injury- and accident-related, and psychopathological variable clusters as well as factors reflecting stressors concerning mothers and family. Results Children suffering from posttraumatic stress reported a prolonged subjective sleep latency. The severity of sleep onset and maintenance problems was predicted by female sex and the child's as well as mothers’ posttraumatic stress disorder (PTSD) severity. Conclusions Sleep onset and maintenance problems in children after trauma appear to result from a complex interaction of multiple factors. Our findings support the transactional model of sleep-wake regulation that bears implications for the development of adequate intervention strategies. PMID:22893829

  11. Internet-Based Recording Service Solves Maintenance Reporting Problems.

    ERIC Educational Resources Information Center

    Noah, Marilyn

    2001-01-01

    Details the response to a health threat caused by illegal wastewater disposal in Wisconsin. Traces the identification of the problem, ordinances and policies adopted to guide the remedy, and subsequent monitoring of environmental quality. (DDR)

  12. Problem Resolution through Electronic Mail: A Five-Step Model.

    ERIC Educational Resources Information Center

    Grandgenett, Neal; Grandgenett, Don

    2001-01-01

    Discusses the use of electronic mail within the general resolution and management of administrative problems and emphasizes the need for careful attention to problem definition and clarity of language. Presents a research-based five-step model for the effective use of electronic mail based on experiences at the University of Nebraska at Omaha.…

  13. Resolutions of Problems that Occurred in SPEAR3 Magnet Production

    SciTech Connect

    Li, Nanyang

    2005-05-27

    Some problems occurred during the SPEAR3 magnet production at IHEP, China. It was very hard to find resolution from existing knowledge of those problems. It was possible that similar problems might have happen in building accelerator magnet in other institutes before, but they were not addressed in public papers. These problems were discussed and solved by engineers from both SLAC and IHEP after conducting certain experiments. Traditionally, the magnet design and measurement data have been always well documented and addressed in papers, but the production experiences have not been recorded adequately. It is the goal of this paper to record the problems and their resolutions during SPEAR3 magnet production at IHEP China, which will certainly benefit future magnet projects.

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

    SciTech Connect

    Nijs, Els L. F.; Cahill, Anne Marie

    2010-12-15

    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.

  15. Theoretical Problems in High Resolution Solar Physics, 2

    NASA Technical Reports Server (NTRS)

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

    1987-01-01

    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.

  16. Optimization as a Tool for Consistency Maintenance in Multi-Resolution Simulation

    NASA Technical Reports Server (NTRS)

    Drewry, Darren T; Reynolds, Jr , Paul F; Emanuel, William R

    2006-01-01

    The need for new approaches to the consistent simulation of related phenomena at multiple levels of resolution is great. While many fields of application would benefit from a complete and approachable solution to this problem, such solutions have proven extremely difficult. We present a multi-resolution simulation methodology that uses numerical optimization as a tool for maintaining external consistency between models of the same phenomena operating at different levels of temporal and/or spatial resolution. Our approach follows from previous work in the disparate fields of inverse modeling and spacetime constraint-based animation. As a case study, our methodology is applied to two environmental models of forest canopy processes that make overlapping predictions under unique sets of operating assumptions, and which execute at different temporal resolutions. Experimental results are presented and future directions are addressed.

  17. CONTEMPORARY SITUATIONS AND PROBLEMS OF ROAD/BRIDGE MAINTENANCE TECHNICAL COOPERATION PROJECTS

    NASA Astrophysics Data System (ADS)

    Nishimiya, Noriaki; Sanui, Kazumasa; Mizota, Yuzo

    It is widely acknowledged that roads are the most important transport infrastructure in developing countries. Unlike railroads requiring organizations and systems to operate, individuals can drive on roads. Almost all donors have assisted developing countr ies for new road constructions and rehabilitations. Report of insufficient maintenance in the developing countries, however, has been notable. As a result of the maintenance problems, deterioration of roads is pr ogressing with speed more than expected. It causes the traffic safety problems and an obstacle of economic development. JICA and other donors recognize that this situation can not be overlooked and reci pient countries are increasing their expectation of obtaining assistance on road/bridge maintenance. JICA has implemented over 10 technical cooper ation projects for road/b ridge maintenance in developing countries. JICA conducted a study to review those projects comprehensively. That study aims at obtaining problems, lessons learned and discussion material for policy making and method improvement for future similar pr ojects. This report introduces the outline of the study including additional analysis and recommendations by the authors.

  18. The role of romantic attraction and conflict resolution in predicting shorter and longer relationship maintenance among adolescents.

    PubMed

    Appel, Israel; Shulman, Shmuel

    2015-04-01

    This study examined the role of romantic attraction and conflict resolution patterns in shorter and longer relationship maintenance among adolescent couples. Data were used from 55 couples aged 15-18 years. Partners completed the Romantic Attraction scale and were observed negotiating a disagreement. Three and 6 months later, they were asked to report whether they were still together. Findings indicated that partners' romantic attraction and the tendency to minimize disagreements during interaction predicted shorter relationship maintenance. In contrast, longer relationship maintenance was predicted by partners' capability to resolve conflicts constructively in a positive atmosphere. Findings are embedded and discussed within Fisher's (2004) evolutionary theory of love. PMID:25663237

  19. A resource conflict resolution problem formulated in continuous time

    NASA Astrophysics Data System (ADS)

    Gaver, D. P.; Fayolle, G.; Weiss, A.

    1985-08-01

    In many situations involving data transmission from diverse sources there can be conflict for a limited number of channels or other facilities. Uncoordinated attempts by several sources to use a single facility can result in collision, the destruction of all participants in the collision, meaning the loss of the transmission, and hence the need for re-transmission. An important problem concerns the development of workable procedures for alleviating the conflict and corresponding message delay problems. Often such problems are viewed as occurring in discrete time: slots of equal length occur in temporal succession, and each slot can handle just one packet of data at a time, if two or more packets try to use the same slot simultaneously, a collision occurs that somehow must be resolved. A recent paper analyzed a stack protocol for handling such a situation, but there are many other proposals. This report is concerned with some simple models for a single facility (channel), and for contention or conflict resolution. The models are formulated in a continuous-time manner: messages, or numbers of packets constituting messages, are long, meaning that they occupy many consecutive slots on the average if a single transmission is occurring.

  20. NASA Engineering and Safety Center NDE Super Problem Resolution Team

    NASA Astrophysics Data System (ADS)

    Prosser, W. H.

    2007-03-01

    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.

  1. Application of Column Generation for Train-set Scheduling Problems with Regular Maintenance Constraints

    NASA Astrophysics Data System (ADS)

    Ohno, Akiyoshi; Nishi, Tatsushi; Inuiguchi, Masahiro; Takahashi, Satoru; Ueda, Kenji

    In this paper, we propose a column generation for the train-set scheduling problem with regular maintenance constraints. The problem is to allocate the minimum train-set to the train operations required to operate a given train timetable. In the proposed method, a tight lower bound can be obtained from the continuous relaxation for Dantzig-Wolfe reformulation by column generation. The subproblem for the column generation is an elementary shortest path problem with resource constraints. A labeling algorithm is applied to solve the subproblem. In order to reduce the computational effort for solving subproblems, a new state space relaxation of the subproblem is developed in the labeling algorithm. An upper bound is computed by a heuristic algorithm. Computational results demonstrate the effectiveness of the proposed method.

  2. Oxidative stress in the development, maintenance and resolution of paclitaxel-induced painful neuropathy.

    PubMed

    Duggett, Natalie A; Griffiths, Lisa A; McKenna, Olivia E; de Santis, Vittorio; Yongsanguanchai, Nutcha; Mokori, Esther B; Flatters, Sarah J L

    2016-10-01

    Paclitaxel is a first-line chemotherapeutic with the major dose-limiting side effect of painful neuropathy. Previous preclinical studies indicate mitochondrial dysfunction and oxidative stress are associated with this disorder; however no direct assessment of reactive oxygen species (ROS) levels and antioxidant enzyme activity in sensory neurons following paclitaxel has been undertaken. As expected, repeated low doses of systemic paclitaxel in rats induced long-lasting pain behaviour with a delayed onset, akin to the clinical scenario. To elucidate the role of ROSinthe development and maintenance ofpaclitaxel-inducedpainful neuropathy, we have assessed ROS and antioxidant enzyme activity levels in the nociceptive system in vivo at three key behavioural time-points; prior to pain onset (day 7), peak pain severity and pain resolution. In isolated dorsal root ganglia (DRG) neurons, ROS levels were unchanged following paclitaxel-exposure in vitro or in vivo. ROS levels were further assessed in DRG and spinal cord in vivo following intrathecal MitoTracker®RedCM-H2XRos administration in paclitaxel-/vehicle-treated rats. ROS levels were increased at day 7, specifically in non-peptidergic DRG neurons. In the spinal cord, neuronally-derived ROS was increased at day 7, yet ROS levels in microglia and astrocytes were unaltered. In DRG, CuZnSOD and glutathione peroxidase (GPx) activity were increased at day 7 and peak pain time-points, respectively. In peripheral sensory nerves, CuZnSOD activity was increased at day 7, and at peak pain, MnSOD, CuZnSOD and GPx activity were increased. Catalase activity was unaltered in DRG and saphenous nerves. These data suggest that neuronally-derived mitochondrial ROS, accompanied with an inadequate endogenous antioxidant enzyme response, are contributory factors in paclitaxel-induced painful neuropathy. PMID:27393249

  3. Automatic resolution of the three-points geological problem

    NASA Astrophysics Data System (ADS)

    Martinez-Torres, Luis M.; Lopetegui, Ane; Eguiluz, Luis

    2012-05-01

    The problem of three points, or 3P problem, is the basic geometrical reference of numerous geological structures. We propose a simple Microsoft Excel spreadsheet program that determines from three georeferenced points the strike and dip of the plane that contains them. Practical examples showing the application in Google Earth and LIDAR data are presented.

  4. Taxonomic Resolution as a Conceptual Problem for Understanding Ecological Science.

    NASA Astrophysics Data System (ADS)

    Lafrancois, T.

    2005-05-01

    The results of ecological analyses can vary with the taxonomic resolution(s) used to sort and quantify the organisms studied. It seems intuitive that the finest unit of taxonomy results in the finest discrimination of ecological processes, and this is certainly true in many cases (e.g. Hawkins 2000, Attayde 2001). However, other important work suggests that some ecological processes (e.g. Bowman 1997) or concepts (e.g. Schoener 1986, Olsgard 1998) are only supported by analysis at supra-specific taxonomic resolution. In fact, taxonomic levels above species are often necessary for detecting certain ecological relationships, such as key measurements of food webs (Vanderklift 1998) or stability of ecological communities over time (Bowman 1997). If some levels of organization result in different ecological outcomes, two questions are immediately raised. First, why do these levels lead to different outcomes, and second, what is the basis of choosing one resolution over another? I will address the first question by outlining four aspects of the problematic relationship between taxonomy and ecology: taxonomic variance, taxonomic heterogeneity, and taxonomic ambiguity both within and between groups. I aim to show that these interactions suggest a dependence relationship of ecological outcomes on taxonomic concepts.

  5. Problem drinking in relation to treatment outcome among opiate addicts in methadone maintenance treatment.

    PubMed

    Stenbacka, M; Beck, O; Leifman, A; Romelsjö, A; Helander, A

    2007-01-01

    This study analyzed indicators of alcohol-related problems in opiate addicts before, during, and after leaving methadone maintenance treatment (MMT), in relation to illicit drug use and retention in treatment. The study was based on 204 patients, admitted to MMT for the first time between 1 January 1995 and 31 July 2000, and followed until 31 December 2000. Three measures were used to indicate alcohol use and alcohol-related problems; records of hospital care with an alcohol-related diagnosis, any treatment with alcohol-sensitizing drugs (disulfiram or calcium carbimide) during MMT, and results of the 5-hydroxytryptophol to 5-hydroxyindoleacetic acid ratio (5HTOL/5HIAA) in urine, a sensitive biomarker for recent drinking. Use of illicit drugs was determined by routine urine drug testing. About one third of the patients (n = 69) had a lifetime prevalence of hospital treatment for an alcohol-related diagnosis, 45 of whom had been hospitalized (mean 4.2 stays) prior to the start of MMT. There was a significant association (p<0.05) between the number of alcohol-related diagnoses prior to treatment and a positive 5HTOL/5HIAA test during MMT. The alcohol indicators first became positive on average 1.6 years after admission to treatment, compared with after about 4 months for illicit drugs. Use of cannabis or benzodiazepines was significantly associated with alcohol use. Female methadone patients with indications of alcohol-related problems relapsed more often into illicit drug use than did women without such indications (3.9 vs. 2.5 relapse periods/year; p<0.005), whereas no significant association was found for men. The results of the present study indicate that drinking problems among patients undergoing MMT is associated with an increased risk of relapse into illicit drug use and with discharge from treatment. Concurrent treatment of alcohol-related problems, including systematic monitoring of alcohol use, therefore should be recommended to reduce the risk for relapse

  6. Clarification process: Resolution of decision-problem conditions

    NASA Technical Reports Server (NTRS)

    Dieterly, D. L.

    1980-01-01

    A model of a general process which occurs in both decisionmaking and problem-solving tasks is presented. It is called the clarification model and is highly dependent on information flow. The model addresses the possible constraints of individual indifferences and experience in achieving success in resolving decision-problem conditions. As indicated, the application of the clarification process model is only necessary for certain classes of the basic decision-problem condition. With less complex decision problem conditions, certain phases of the model may be omitted. The model may be applied across a wide range of decision problem conditions. The model consists of two major components: (1) the five-phase prescriptive sequence (based on previous approaches to both concepts) and (2) the information manipulation function (which draws upon current ideas in the areas of information processing, computer programming, memory, and thinking). The two components are linked together to provide a structure that assists in understanding the process of resolving problems and making decisions.

  7. A high-resolution numerical technique for inviscid gas-dynamic problems with weak solutions

    NASA Technical Reports Server (NTRS)

    Yee, H. C.; Warming, R. F.; Harten, A.

    1982-01-01

    The shock resolution of Harten's (1982) second-order explicit method for one-dimensional hyperbolic conservation laws is investigated for a two-dimensional gas-dynamic problem. The possible extension to a high resolution implicit method for both one- and two-dimensional problems is also investigated. Applications of Harten's method to the quasi-one-dimensional nozzle problem with two nozzle shapes (divergent and convergent-divergent) and the two-dimensional shock-reflection problem resulted in high shock resolution steady-state numerical solutions.

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

    ERIC Educational Resources Information Center

    Ferrari, Michel

    2003-01-01

    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…

  9. Solving the inverse problem of magnetisation-stress resolution

    NASA Astrophysics Data System (ADS)

    Staples, S. G. H.; Vo, C.; Cowell, D. M. J.; Freear, S.; Ives, C.; Varcoe, B. T. H.

    2013-04-01

    Magnetostriction in various metals has been known since 1842, recently the focus has shifted away from ferrous metals, towards materials with a straightforward or exaggerated stress magnetostriction relationship. However, there is an increasing interest in understanding ferrous metal relationships, especially steels, because of its widespread use in building structures, transportation infrastructure, and pipelines. The aim of this paper is to solve the inverse problem of determining stress from an observed magnetic field which implies a given magnetic structure and to demonstrate that theoretical calculations using a multi-physics modeling technique agree with this experimental observation.

  10. Resolution of the Band Gap Prediction Problem for Materials Design.

    PubMed

    Crowley, Jason M; Tahir-Kheli, Jamil; Goddard, William A

    2016-04-01

    An important property with any new material is the band gap. Standard density functional theory methods grossly underestimate band gaps. This is known as the band gap problem. Here, we show that the hybrid B3PW91 density functional returns band gaps with a mean absolute deviation (MAD) from experiment of 0.22 eV over 64 insulators with gaps spanning a factor of 500 from 0.014 to 7 eV. The MAD is 0.28 eV over 70 compounds with gaps up to 14.2 eV, with a mean error of -0.03 eV. To benchmark the quality of the hybrid method, we compared the hybrid method to the rigorous GW many-body perturbation theory method. Surprisingly, the MAD for B3PW91 is about 1.5 times smaller than the MAD for GW. Furthermore, B3PW91 is 3-4 orders of magnitude faster computationally. Hence, B3PW91 is a practical tool for predicting band gaps of materials before they are synthesized and represents a solution to the band gap prediction problem. PMID:26944092

  11. Operation and maintenance manual for the high resolution stereoscopic video camera system (HRSVS) system 6230

    SciTech Connect

    Pardini, A.F., Westinghouse Hanford

    1996-07-16

    The High Resolution Stereoscopic Video Cameral System (HRSVS),system 6230, is a stereoscopic camera system that will be used as an end effector on the LDUA to perform surveillance and inspection activities within Hanford waste tanks. It is attached to the LDUA by means of a Tool Interface Plate (TIP), which provides a feed through for all electrical and pneumatic utilities needed by the end effector to operate.

  12. Towards the resolution of the solar neutrino problem

    SciTech Connect

    Friedland, Alexander

    2000-08-29

    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

  13. Scrutinizing the cosmological constant problem and a possible resolution

    NASA Astrophysics Data System (ADS)

    Bernard, Denis; LeClair, André

    2013-03-01

    We suggest a new perspective on the cosmological constant problem by scrutinizing its standard formulation. In classical and quantum mechanics without gravity, there is no definition of the zero point of energy. Furthermore, the Casimir effect only measures how the vacuum energy changes as one varies a geometric modulus. This leads us to propose that the physical vacuum energy in a Friedmann-Lemaître-Robertson-Walker expanding universe only depends on the time variation of the scale factor a(t). Equivalently, requiring that empty Minkowski space is gravitationally stable is a principle that fixes the ambiguity in the zero-point energy. On the other hand, if there is a meaningful bare cosmological constant, this prescription should be viewed as a fine-tuning. We describe two different choices of vacuum, one of which is consistent with the current universe consisting only of matter and vacuum energy. The resulting vacuum energy density ρvac is constant in time and approximately kc2H02, where kc is a momentum cutoff and H0 is the current Hubble constant; for a cutoff close to the Planck scale, values of ρvac in agreement with astrophysical measurements are obtained. Another choice of vacuum is more relevant to the early universe consisting of only radiation and vacuum energy, and we suggest it as a possible model of inflation.

  14. High Resolution Doppler Imager FY 2001,2002,2003 Operations and Algorithm Maintenance

    NASA Technical Reports Server (NTRS)

    Skinner, Wilbert

    2004-01-01

    During the performance period of this grant HRDI (High Resolution Doppler Imager) operations remained nominal. The instrument has suffered no loss of scientific capability and operates whenever sufficient power is available. Generally, there are approximately 5-7 days per month when the power level is too low to permit observations. The daily latitude coverage for HRDI measurements in the mesosphere, lower thermosphere (MLT) region are shown.It shows that during the time of this grant, HRDI operations collected data at a rate comparable to that achieved during the UARS (Upper Atmosphere Research Satellite) prime mission (1991 -1995). Data collection emphasized MLT wind to support the validation efforts of the TIDI instrument on TIMED, therefore fulfilling one of the primary objectives of this phase of the UARS mission. Skinner et al., (2003) present a summary of the instrument performance during this period.

  15. Coding "Corrective Recasts": The Maintenance of Meaning and More Fundamental Problems

    ERIC Educational Resources Information Center

    Hauser, Eric

    2005-01-01

    A fair amount of descriptive research in the field of second language acquisition has looked at the presence of what have been labeled corrective recasts. This research has relied on the methodological practice of coding to identify particular turns as "corrective recasts." Often, the coding criteria make use of the notion of the maintenance of…

  16. Problems and Resolutions in the Practice of Project Teaching in Higher Vocational Schools

    ERIC Educational Resources Information Center

    Sheng, Zhichong; Tan, Jianhua

    2011-01-01

    Recently, there has been a hot discussion on project teaching theory among many higher vocational schools; however the practice of project teaching is still in the beginning period. Hence, many problems appear in project lead. This paper aims to analyze the existing problems in the practice of project teaching and also raise some resolutions.

  17. Two fuzzy possibilistic bi-objective zero-one programming models for outsourcing the equipment maintenance problem

    NASA Astrophysics Data System (ADS)

    Vahdani, Behnam; Jolai, Fariborz; Tavakkoli-Moghaddam, Reza; Meysam Mousavi, S.

    2012-07-01

    Maintenance outsourcing can be regarded as a strategic weapon to increase productivity and customer satisfaction in many companies, and this critical activity can be performed in a more efficient and effective way. This article presents two novel fuzzy possibilistic bi-objective zero-one programming (FPBOZOP) models for outsourcing of the equipment maintenance. In these models, cost parameters, including outsourcing cost, risk cost, time operations for performing the equipment maintenance and reliability level, as well as other influential parameters are considered through the outsourcing process. Moreover, the presented models can measure the capability of the company in doing different activities, unlike previous studies, in order to see the possibility of maintenance in-house, and can lead to make a best decision on the basis of the models' results. Both models are developed under uncertainty, which bring top managers the possibility of assigning more than one equipment or project to the supplier so that the profit is maximized, and the cost is minimized by considering bi-objectives concurrently. Then, a new fuzzy mathematical programming based possibilistic approach is introduced as a solution methodology from the recent literature to solve the proposed bi-objective zero-one programming (BOZOP) models and to reach a preferred compromise solution. Furthermore, a real-case study is utilized to demonstrate and to validate the effectiveness of the presented models. The computational results revealed that the models can be implemented in variety of problems in the domain of the equipment maintenance outsourcing and project outsourcing either from theory or application perspectives.

  18. Behavioral Economic Analysis of Natural Resolution of Drinking Problems using IVR Self-Monitoring

    PubMed Central

    Tucker, Jalie A.; Foushee, H. Russell; Black, Bethany C.

    2008-01-01

    This study investigated whether a behavioral economic index of the value of rewards available over different time horizons predicted patterns of alcohol consumption shortly after natural resolution when the risk of relapse is high. Using a computerized Interactive Voice Response (IVR) telephone system, untreated problem drinkers (n = 41) self-monitored their daily drinking, monetary expenditures, and surrounding contexts over intervals that ranged from a maximum of 42 to 128 days. Expanded Timeline Followback interviews were conducted before and after the IVR interval and one year after the baseline assessment. Stable resolutions generally and moderation resolutions specifically were associated with proportionally more pre-resolution expenditures on savings and less on alcohol compared to heavy drinking outcomes. The findings replicated and extended earlier research and suggested that the extent to which problem drinkers organized their behavior over longer intervals, even when drinking abusively, helped identify who resolved, including who transitioned to stable moderation. PMID:18729688

  19. "Living with the dirty secret": problems of disclosure for methadone maintenance clients.

    PubMed

    Murphy, S; Irwin, J

    1992-01-01

    This article focuses on the management of stigma by methadone maintenance patients. It explores (1) the consequences of this persistent stigma, which necessitates the need for secrecy, (2) the adaptations made in order to successfully "pass as normal," and (3) the contexts in which methadone-maintained individuals decide to disclose their stigmatized status. The data reported and analyzed were gathered between 1980 and 1989 during a series of studies funded by the National Institute on Drug Abuse. The three studies--"Women on Methadone," "Getting Off Methadone," and "Alameda County Methadone Study"--utilized qualitative, in-depth interviews and ethnographic sampling techniques, primarily chain referral sampling. After ten years of interviewing women and men in various stages of their methadone maintenance careers, recurring themes emerged, one of which was that being a methadone patient is a marginal identity; not quite junkie, not quite conventional. Clients' efforts to manage this stigmatized identity were often shrouded in anguish and secrecy. Methadone patients were in a kind of identity limbo; a holding pattern between two extremely different social worlds. They were trying to effect an identity transformation; however, in many circumstances they were still associated with and defined by their "dirty secret." PMID:1432404

  20. Resolution Analysis for Experiment Planning of a Nonlinear Seafloor Acoustic Inverse Problem

    NASA Astrophysics Data System (ADS)

    Ganse, A. A.; Odom, R. I.

    2007-12-01

    Geoacoustic inversion is the estimation of physical properties of the ocean bottom as a continuous function of position (or depth) in the seafloor given acoustic receptions in the water column. It is closely related to marine reflection seismology but also has features of refraction seismology, and uses sonar equipment and less than ideal geometries because accurate scientific determination of the seafloor may not be the primary goal of the experiments. However, the authors show how a pre-measurement inverse theory resolution analysis can be used as part of experiment planning regarding sensor placement and ship tracks, such that a desire for an experimental configuration giving the most information in bottom inversion can be quantitatively balanced with that for other needs like tracking and communication. This nonlinear geoacoustic inverse problem is ill-posed, so that one can only estimate the continuous function of seafloor properties to a limited resolution. This limited resolution varies with experiment geometry, frequency, and other such factors, and can be quantified in either a frequentist or Bayesian framework. Given statistics of the measurement noise (but without any new measurements themselves), the resolution can be quantified exactly for a linear inverse problem, and compared between different experiment geometries. Nonlinear problems complicate this picture, but if the problem can be transformed into a weakly nonlinear form then the resolution may still be explored in an approximate sense and used as a tool in the planning phase. The ideal situation is when previous seafloor estimates exist for the same region in which a new experiment with new geometry and configuration is being planned. For the scenario without previous results, a somewhat more ad-hoc approach can still compare changes in resolution across different seafloor models. This presentation demonstrates the technique for a synthetic problem involving a single stationary source and a

  1. Complete Resolution of Neuroendocrine Tumor Soft Tissue Metastases After 177Lu DOTATATE PRRT Induction and Maintenance Therapy.

    PubMed

    Makis, William; McCann, Karey; Buteau, Francois A; McEwan, Alexander J B

    2015-08-01

    A 60-year-old woman diagnosed with a well-differentiated neuroendocrine tumor metastatic to the liver and lymph nodes was treated with 4 induction cycles and 2 maintenance cycles of (177)Lu [DOTA,(0)Tyr(3)]octreotate (DOTATATE) peptide receptor radionuclide therapy. Her posttreatment imaging showed partial response after 4 induction cycles and complete response after 2 additional maintenance cycles. This case highlights the need for further research into maintenance (177)Lu DOTATATE therapy to improve outcomes in neuroendocrine tumor patients. PMID:25546219

  2. High Order And High Resolution Methods For a Model CAA Problem

    NASA Technical Reports Server (NTRS)

    Goodrich, John W.

    2004-01-01

    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.

  3. A theoretical and numerical resolution of an acoustic multiple scattering problem in three-dimensional case

    NASA Astrophysics Data System (ADS)

    Amamou, Manel L.

    2016-05-01

    This paper develops an analytical solution for sound, electromagnetic or any other wave propagation described by the Helmholtz equation in three-dimensional case. First, a theoretical investigation based on multipole expansion method and spherical wave functions was established, through which we show that the resolution of the problem is reduced to solving an infinite, complex and large linear system. Second, we explain how to suitably truncate the last infinite dimensional system to get an accurate stable and fast numerical solution of the problem. Then, we evaluate numerically the theoretical solution of scattering problem by multiple ideal rigid spheres. Finally, we made a numerical study to present the "Head related transfer function" with respect to different physical and geometrical parameters of the problem.

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

    NASA Astrophysics Data System (ADS)

    Yilmaz, Hüseyin

    1989-03-01

    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)

  5. Wilkinson Microwave Anisotropy Probe (WMAP) Battery Operations Problem Resolution Team (PRT)

    NASA Technical Reports Server (NTRS)

    Keys, Denney J.

    2010-01-01

    The NASA Technical Discipline Fellow for Electrical Power, was requested to form a Problem Resolution Team (PRT) to help assess the health of the flight battery that is currently operating aboard NASA's Wilkinson Microwave Anisotropy Probe (WMAP) and provide recommendations for battery operations to mitigate the risk of impacting science operations for the rest of the mission. This report contains the outcome of the PRT's assessment.

  6. Preventive maintenance. 'Problem recognition style' can be used to segment the market and promote healthier lifestyles.

    PubMed

    Jayanti, R K

    1997-01-01

    Problem recognition styles--desired state types (DSTs) and actual state types (ASTs)--have an effect on preventive health care decision making. Segmenting the market along these lines can help marketers position products and services to educate and attract people who will not see a doctor unless there is something wrong with them. Both groups expect the same benefits from preventive health care actions, but ASTs fail to act on those expectations. Therefore, marketing strategy touting the benefits of preventive health care might be futile. Educational promotional campaigns aimed at both DSTs and ASTs also are wasteful because DSTs already possess much health knowledge, lead wellness-oriented lifestyles, and practice preventive health behaviors. PMID:10169031

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

    NASA Astrophysics Data System (ADS)

    Tamura, Yoshinobu; Yamada, Shigeru

    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.

  8. 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

    Okrent, D.

    1989-03-01

    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.

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

    SciTech Connect

    Okrent, D.

    1989-03-01

    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.

  10. Social environmental influences on the development and resolution of alcohol problems.

    PubMed

    McCrady, Barbara S; Zucker, Robert A; Molina, Brooke S G; Ammon, Lyndsay; Ames, Genevieve M; Longabaugh, Richard

    2006-04-01

    This article summarizes the proceedings of a symposium presented at the 2005 Annual Meeting of the Research Society on Alcoholism, Santa Barbara, California, June 25-30. The overall goal of the symposium was to consider the broad impact of the social environment on the development of and successful or unsuccessful resolution of drinking problems. The presentations addressed multiple social environmental influences including: the influence of children on parents (Dr. Zucker), the influence of peers and parents on adolescents (Dr. Molina), the influence of family members on adult drinking (Dr. McCrady), the influence of adult peers/friends (Dr. Kaskutas), and the influence of the occupational environment (Dr. Ames). Dr. Longabaugh, the symposium discussant, addressed models for understanding the relationships between social influences and drinking problems. PMID:16573588

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

    SciTech Connect

    Tate, D.D.

    1982-01-01

    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.

  12. Applications of shallow high-resolution seismic reflection to various environmental problems

    USGS Publications Warehouse

    Miller, R.D.; Steeples, D.W.

    1994-01-01

    Shallow seismic reflection has been successfully applied to environmental problems in a variety of geologic settings. Increased dynamic range of recording equipment and decreased cost of processing hardware and software have made seismic reflection a cost-effective means of imaging shallow geologic targets. Seismic data possess sufficient resolution in many areas to detect faulting with displacement of less than 3 m and beds as thin as 1 m. We have detected reflections from depths as shallow as 2 m. Subsurface voids associated with abandoned coal mines at depths of less than 20 m can be detected and mapped. Seismic reflection has been successful in mapping disturbed subsurface associated with dissolution mining of salt. A graben detected and traced by seismic reflection was shown to be a preferential pathway for leachate leaking from a chemical storage pond. As shown by these case histories, shallow high-resolution seismic reflection has the potential to significantly enhance the economics and efficiency of preventing and/or solving many environmental problems. ?? 1994.

  13. Application of CFD Analysis to Design Support and Problem Resolution for ASRM and RSRM

    NASA Technical Reports Server (NTRS)

    Dill, Richard A.; Whitesides, R. Harold

    1993-01-01

    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 proven to be of great benefit in explaining problems associated with operational motors such as in the case of the pressure spike problem with the STS-54B flight motor. This paper presents results from analyses involving both motor design support and problem resolution. The issues discussed include the fluid dynamic/mechanical stress coupling at field joints relative to significant propellant deformations, the prediction of axial and radial pressure gradients in the motor associated with motor performance and propellant mechanical loading, the prediction of transition of the internal flow in the motor associated with erosive burning, the accumulation of slag at the field joints and in the submerged nozzle region, impingement of flow on the nozzle nose, and pressure gradients in the nozzle region of the motor. The analyses presented in this paper have been performed using a two-dimensional axisymmetric model. Fluent/BFC, a three dimensional Navier-Stokes flow field code, has been used to make the numerical calculations. This code utilizes a staggered grid formulation along with the SIMPLER numerical pressure-velocity coupling algorithm. Wall functions are used to represent the character of the viscous sub-layer flow, and an adjusted k-epsilon turbulence model especially configured for mass injection internal flows, is used to model the growth of turbulence in the motor port. Conclusions discussed in this paper consider flow field effects on the forward, center, and aft propellant grains except for the head end star grain region of the forward propellant segment. The field joints and the

  14. Defer Maintenance, Invite Disaster

    ERIC Educational Resources Information Center

    Bowman, William W.

    1977-01-01

    An AGB- and NACUBO-sponsored survey showed that "wish lists" are accumulating overdue major maintenance projects because energy costs are consuming physical plant budgets. Problem areas are discussed: budget "guesstimation," preventive maintenance, deferred maintenance inventory, the APPA accounting format, resource allocation, and inflation.…

  15. Solving the problem of imaging resolution: stochastic multi-scale image fusion

    NASA Astrophysics Data System (ADS)

    Karsanina, Marina; Mallants, Dirk; Gilyazetdinova, Dina; Gerke, Kiril

    2016-04-01

    Structural features of porous materials define the majority of its physical properties, including water infiltration and redistribution, multi-phase flow (e.g. simultaneous water/air flow, gas exchange between biologically active soil root zone and atmosphere, etc.) and solute transport. To characterize soil and rock microstructure X-ray microtomography is extremely useful. However, as any other imaging technique, this one also has a significant drawback - a trade-off between sample size and resolution. The latter is a significant problem for multi-scale complex structures, especially such as soils and carbonates. Other imaging techniques, for example, SEM/FIB-SEM or X-ray macrotomography can be helpful in obtaining higher resolution or wider field of view. The ultimate goal is to create a single dataset containing information from all scales or to characterize such multi-scale structure. In this contribution we demonstrate a general solution for merging multiscale categorical spatial data into a single dataset using stochastic reconstructions with rescaled correlation functions. The versatility of the method is demonstrated by merging three images representing macro, micro and nanoscale spatial information on porous media structure. Images obtained by X-ray microtomography and scanning electron microscopy were fused into a single image with predefined resolution. The methodology is sufficiently generic for implementation of other stochastic reconstruction techniques, any number of scales, any number of material phases, and any number of images for a given scale. The methodology can be further used to assess effective properties of fused porous media images or to compress voluminous spatial datasets for efficient data storage. Potential practical applications of this method are abundant in soil science, hydrology and petroleum engineering, as well as other geosciences. This work was partially supported by RSF grant 14-17-00658 (X-ray microtomography study of shale

  16. Cryogenics maintenance strategy

    NASA Astrophysics Data System (ADS)

    Cruzat, Fabiola

    2012-09-01

    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.

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

    SciTech Connect

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

    2014-09-01

    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.

  18. Problem of mixtures with known compositions and IRONFLEA method for multivariate curve resolution.

    PubMed

    Zyrianov, Yegor

    2007-10-17

    A special case of gray spectral data systems [(a) F.-T. Chau, Y.-Z. Liang, J. Gao, X.-G. Shao (Eds.), Chemometrics: From Basics to Wavelet Transform, Chemical Analysis Series, vol. 164, John Wiley & Sons, Inc., 2004; (b) Y.Z. Liang, O.M. Kvalheim, R. Manne, Chemom. Intell. Lab. Syst. 18 (1993) 235-250] is discussed here and the least-squares method for the multivariate curve resolution (MCR) named IRONFLEA is proposed. The system under consideration is the bilinear spectral data of the samples with known chemical compositions and unknown concentration matrix. If the spectra of samples (A(i)) and (Q+A(i)) (i = 1, ..., n, n > or = 2) are available, then the spectrum and the concentrations of Q could be found and the solution is unique. A practical chemical model for this problem could be mixtures, polymers, peptides, oligosaccharides, or supramolecular formations made of a limited number of monomeric components. In the cases of polymeric or oligomeric samples the spectral contributions and the concentrations of the particular monomeric units are extracted. The method is capable of extracting chemically meaningful spectra of components. The method is implemented in SAS IML code and tested for the deconvolution of spectra of polymers made of styrene derivatives with known monomeric compositions [(a) H. Fenniri, L. Ding, A.E. Ribbe, Y. Zyrianov, J. Am. Chem. Soc. 123 (2001) 8151-8152; (b) H. Fenniri, S. Chun, L. Ding, Y. Zyrianov, K. Hallenga, J. Am. Chem. Soc. 125 (2003) 10546-10560]. The method performs calculations fast enough to allow the incorporation of leave-one-out outlier removal procedure. PMID:17936106

  19. The Application of High-Resolution Electron Microscopy to Problems in Solid State Chemistry: The Exploits of a Peeping TEM.

    ERIC Educational Resources Information Center

    Eyring, LeRoy

    1980-01-01

    Describes methods for using the high-resolution electron microscope in conjunction with other tools to reveal the identity and environment of atoms. Problems discussed include the ultimate structure of real crystalline solids including defect structure and the mechanisms of chemical reactions. (CS)

  20. Inhibitory Control Is Needed for the Resolution of Arithmetic Word Problems: A Developmental Negative Priming Study

    ERIC Educational Resources Information Center

    Lubin, Amélie; Vidal, Julie; Lanoë, Céline; Houdé, Olivier; Borst, Grégoire

    2013-01-01

    Solving simple arithmetic word problems is a major ability that children must acquire throughout the primary-grade mathematics curriculum. However, this skill is often challenging for them. For instance, "unknown referent problems" are more difficult to solve than "unknown compare problems." In unknown compare problems, the…

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

    PubMed Central

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

    2014-01-01

    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

  2. The Geometrization of Matter Proposal in the Barrett-Crane Model and Resolution of Cosmological Problems

    SciTech Connect

    Alexander, Stephon

    2003-07-15

    We give an overview of the current issues in early universe cosmology and consider the potential resolution of these issues in an as yet nascent spin foam cosmology. The model is the Barrett-Crane Model for quantum gravity along with a generalization of manifold complexes to complexes including conical singularities.

  3. Prosocial Problem-Solving Techniques for Conflict Resolution in the Kindergarten Classroom.

    ERIC Educational Resources Information Center

    Linde, Dorri B.

    A practicum project was developed and implemented to reduce the incidents of aggressive behavior and impulsive actions among kindergarten students by means of win-win situations for conflict resolution. The objectives for the program were to achieve: (1) a 25 percent decrease of impulsive and aggressive behavior; (2) 50 percent of the target group…

  4. Is the Resolution Style "Exiting Statements" Related to Adolescent Problem Behavior?

    ERIC Educational Resources Information Center

    Wijsbroek, Saskia A. M.; Hale, William W., III; Van Doorn, Muriel D.; Raaijmakers, Quinten A. W.; Meeus, Wim H. J.

    2010-01-01

    This study examined the association between the adolescents' conflict resolution style "exiting statements" (i.e., the expression of the adolescent' desire to minimize or end the contact with his or her parents) in parent-adolescent conflicts with self-rated adolescent GAD symptoms and delinquency symptoms of 1313 adolescents. A multi-group,…

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

    ERIC Educational Resources Information Center

    Girill, T. R.; And Others

    1991-01-01

    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…

  6. Proactive maintenance initiatives at Argonne National Laboratory-West

    SciTech Connect

    Duckwitz, N.R.; Duncan, L.W.; Whipple, J.J.

    1995-06-01

    In the late 1980`s, ANL-W Management foresaw a need to provide dedicated technical support for maintenance supervisors. Maintenance supervisors were facing increased challenges to ensure all environmental, safety, and waste management regulations were followed in daily maintenance activities. This increased burden was diverting supervisory time away from on-the-job supervision. Supervisors were finding less time for their ``mentor`` roles to ensure maintenance focused on finding and correcting root causes. Additionally the traditional maintenance organization could not keep up with the explosion in predictive maintenance technologies. As a result, engineers were tasked to provide direct technical support to the maintenance organization. Today the maintenance technical support group consists of two mechanical engineers, two electrical engineers and an I&C engineer. The group provides a readily available, quick response resource for crafts people and their supervisors. They can and frequently do ask the support group for help to determine the root cause and to effect permanent fixes. Crafts and engineers work together informally to make an effective maintenance team. In addition to day-to-day problem solving, the technical support group has established several maintenance improvement programs for the site. This includes vibration analysis of rotating machinery, testing of fuel for emergency diesel generators, improving techniques for testing of high efficiency particulate air (HEPA) filters, and capacity testing of UPS and emergency diesel starting batteries. These programs have increased equipment reliability, reduced conventional routine maintenance, reduced unexpected maintenance, and improved testing accuracy. This paper will discuss the interaction of the technical support group within the maintenance department. Additionally the maintenance improvement programs will be presented along with actual cases encountered, the resolutions and lessons learned.

  7. Automating Preventive Maintenance.

    ERIC Educational Resources Information Center

    Oshier, Michael J.

    1984-01-01

    Describes the following aspects of the State University of New York-Brockport's preventive maintenance computerization project: (1) software selection, (2) project implementation; and (3) problems and benefits of the system. (MCG)

  8. Perceived Competency and Resolution of Homelessness Among Women with Substance Abuse Problems

    PubMed Central

    Finfgeld-Connett, Deborah; Bloom, Tina L.; Johnson, E. Diane

    2011-01-01

    Using a metasynthesis approach, our aim was to articulate new insights relating to the most efficient and effective means of helping homeless women with substance abuse problems to enhance their well-being and become more stably housed. Distorted perceptions of competency, which are shaped by dysfunctional relationships and mental health problems, make it challenging for women with substance abuse problems to resolve homelessness. Women with particularly low or high levels of perceived competency tend to grapple with challenges related to structure and control, trust, and hopelessness. Therapeutic strategies for approaching these women include careful assessment, caring, personalized structure and control, development of interpersonal trust, instillation of hope, and the targeted use of psychotherapeutic agents and counseling. Framing care for homeless women within the context of perceived competency offers a new way of understanding their plight and shaping interventions to more expeditiously move them toward healthy and stable lives. PMID:21890717

  9. Perceived competency and resolution of homelessness among women with substance abuse problems.

    PubMed

    Finfgeld-Connett, Deborah; Bloom, Tina L; Johnson, E Diane

    2012-03-01

    Using a metasynthesis approach, our aim was to articulate new insights relating to the most efficient and effective means of helping homeless women with substance abuse problems to enhance their well-being and become more stably housed. Distorted perceptions of competency, which are shaped by dysfunctional relationships and mental health problems, make it challenging for women with substance abuse problems to resolve homelessness. Women with particularly low or high levels of perceived competency tend to grapple with challenges related to structure and control, trust, and hopelessness. Therapeutic strategies for approaching these women include careful assessment, caring, personalized structure and control, development of interpersonal trust, instillation of hope, and the targeted use of psychotherapeutic agents and counseling. Framing care for homeless women within the context of perceived competency offers a new way of understanding their plight and shaping interventions to more expeditiously move them toward healthy and stable lives. PMID:21890717

  10. Compound classification by computer treatment of low resolution mass spectra - Application to geochemical and environmental problems.

    NASA Technical Reports Server (NTRS)

    Smith, D. H.; Eglinton, G.

    1972-01-01

    A description is given of a development of computer analysis of low-resolution chromatographic-mass spectrometric data, which provides a preliminary classification of an unknown spectrum as a listing of candidate classes of compounds. This procedure, referred to as COMSOC (Classification of Mass Spectra on Computers), operates by converting an incoming unknown mass spectrum into a simplified key word which is then compared with each of the key words held in its reference file. The advantages of COMSOC in characterizing complex mixtures are emphasized.

  11. Response to Contradiction: Conflict Resolution Strategies Used by Students in Solving Problems of Chemical Equilibrium.

    ERIC Educational Resources Information Center

    Niaz, Mansoor

    2001-01-01

    Illustrates how a novel problem of chemical equilibrium based on a closely related sequence of items can facilitate students' conceptual understanding. Students were presented with a chemical reaction in equilibrium to which a reactant was added as an external effect. Three studies were conducted to assess alternative conceptions. (Author/SAH)

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

    ERIC Educational Resources Information Center

    Schweitzer, L. E.

    1986-01-01

    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)

  13. Selection and Resolution of Function Problems and Their Effects on Student Learning

    ERIC Educational Resources Information Center

    Bayazit, Ibrahim

    2011-01-01

    This paper examines two experienced Turkish teachers', Ahmet and Burak, selection and implementation of function problems and relates this to the quality of their students' understanding of this notion. The research findings indicate that regardless of the task quality Ahmet engages, through process-oriented teaching, his students with the notion…

  14. Promoting Health by Addressing Basic Needs: Effect of Problem Resolution on Contacting Health Referrals

    ERIC Educational Resources Information Center

    Thompson, Tess; Kreuter, Matthew W.; Boyum, Sonia

    2016-01-01

    Members of vulnerable populations have heightened needs for health services. One advantage of integrating health risk assessment and referrals into social service assistance systems such as 2-1-1 is that such systems help callers resolve problems in other areas (e.g., housing). Callers to 2-1-1 in Missouri (N = 1,090) with at least one behavioral…

  15. Fast Single Image Super-Resolution Using a New Analytical Solution for l2 - l2 Problems.

    PubMed

    Zhao, Ningning; Wei, Qi; Basarab, Adrian; Dobigeon, Nicolas; Kouame, Denis; Tourneret, Jean-Yves

    2016-08-01

    This paper addresses the problem of single image super-resolution (SR), which consists of recovering a high-resolution image from its blurred, decimated, and noisy version. The existing algorithms for single image SR use different strategies to handle the decimation and blurring operators. In addition to the traditional first-order gradient methods, recent techniques investigate splitting-based methods dividing the SR problem into up-sampling and deconvolution steps that can be easily solved. Instead of following this splitting strategy, we propose to deal with the decimation and blurring operators simultaneously by taking advantage of their particular properties in the frequency domain, leading to a new fast SR approach. Specifically, an analytical solution is derived and implemented efficiently for the Gaussian prior or any other regularization that can be formulated into an l2 -regularized quadratic model, i.e., an l2 - l2 optimization problem. The flexibility of the proposed SR scheme is shown through the use of various priors/regularizations, ranging from generic image priors to learning-based approaches. In the case of non-Gaussian priors, we show how the analytical solution derived from the Gaussian case can be embedded into traditional splitting frameworks, allowing the computation cost of existing algorithms to be decreased significantly. Simulation results conducted on several images with different priors illustrate the effectiveness of our fast SR approach compared with existing techniques. PMID:27187960

  16. PREPP (Process Experimental Pilot Plant) rotary kiln seals: Problem and resolution

    SciTech Connect

    Drexler, R.L. )

    1990-01-01

    The Process Experimental Pilot Plant (PREPP) is a facility designed to demonstrate processing of low level chemical and transuranic hazardous waste. The plant includes equipment for handling the incoming waste containers, shredding, incineration and cooling the waste, grouting the residue and scrubbing and filtration of the off gas. The process incinerator is a rotary kiln approximately 8-{1/2} ft diameter and 25 ft long with a rotary seal assembly at each end. Each seal assembly consists of a primary, secondary and tertiary seal, with a positive air pressure between primary and secondary seals to prevent out-leakage from the kiln. The kiln operates at 0.5 inch water negative pressure. From the very outset the kiln seals exhibited excessive drag which taxed the kiln drive capacity and excessive in-leakage which limited kiln temperature. An engineering evaluation concluded that the original seals supplied by the kiln vendor could not accommodate expansion and centerline shift of the kiln resulting from heatup of the kiln and its support system. A totally new concept kiln seal design has been generated to replace the (modified) original seals. This new seal system has been designed to provide a very tight long lasting seal which will accommodate the 1.5 inch axial shift and up to 1 inch radial movement of the kiln shell. Design lifetime of the seal is 10,000 operating hours between major maintenance services while maintaining an acceptable leak rate hot or cold, rotating or stopped. The design appears adaptable to any size kiln and is suitable for retrofit to existing kilns. A one-third scale prototype seal assembly is being built to verify the concept prior to construction of the 10 ft diameter seals for the PREPP rotary kiln. 4 figs.

  17. Measuring The Flux of Nitrogen From Watersheds, Errors and The Temporal Resolution Problem

    NASA Astrophysics Data System (ADS)

    Showers, W. J.

    2003-12-01

    Agricultural and urban land use has increased the fluxes of nutrients and sediments into surface waters and ground waters. Transport of nitrogen through watersheds into coastal waters has resulted in eutrophication and water quality degradation. Management actions aimed at reducing nitrate contamination of surface waters need a better understanding of fundamental processes that control water quality on a watershed scale. RiverNet, a high resolution (hourly) in situ nitrate monitoring program has found significant concentration variations associated with point sources in the Neuse River Basin, NC. Nutrient inputs from agricultural watersheds are highly correlated to discharge. Nutrient inputs from waste application fields are variable and most important during falling hydrographs. Nitrogen, carbon and oxygen isotopes of nitrate and POM indicate that in-stream nutrient consumption is not an important process in riverine nutrient transport to the estuary in the river mainstem, but can be important in smaller streams and creeks. This water depth/nitrogen in-stream loss data indicates that the contribution of point sources have been underestimated on a watershed scale. In addition large fluxes of nitrate from contaminated groundwater to surface waters adjacent to WAF occur over a 1 to 3 day period after large rain events. The flux of contaminated groundwater has not been taken into account in the NPDES permitting process. 17O of river and groundwater nitrate indicates that atmospheric deposition can be a significant contributor (90 %) to nitrate flux in urban watersheds and to a lesser extent in forested watersheds, but contributes less than 10% of the nitrate flux exported from the basin as a whole. Nitrate fluxes calculated from hourly measurements differ from daily calculated fluxes by up to 20% during high flow conditions and 80% during low flow conditions. These findings indicate that significant errors can be produced by monitoring programs that try to determine

  18. Retaining nurses through conflict resolution. Training staff to confront problems and communicate openly can improve the work climate.

    PubMed

    Fowler, A R; Bushardt, S C; Jones, M A

    1993-06-01

    The way nurses resolve conflict may be leading them to quit their jobs or leave the profession altogether. Conflict is inevitable in a dynamic organization. What is important is not to avoid conflict but to seek its resolution in a constructive manner. Organizational conflict is typically resolved through one of five strategies: withdrawal, force, conciliation, compromise, or confrontation. A recent study of nurses in three different hospitals showed that the approach they use most is withdrawal. This might manifest itself in a request to change shifts or assignments and may lead to a job change and, eventually, abandonment of the field altogether. Given this scenario, changing nurses' conflict resolution style may help administrators combat the nursing shortage. Healthcare organizations must examine themselves to determine why nurses so frequently use withdrawal; then they must restructure work relationships as needed. Next, organizations need to increase nurses' awareness of the problem and train them to use a resolution style more conducive to building stable relationships: confrontation. Staff should also be trained in effective communications skills to develop trust and openness in their relationships. PMID:10126220

  19. High-resolution Inductively Coupled Plasma--Atomic Emission Spectroscopy applied to problems in Nuclear Waste Management

    SciTech Connect

    Edelson, M.C.; Winge, R.K.; Eckels, D.E. ); Douglas, J.G. )

    1990-01-01

    High-resolution Inductively Coupled Plasma-Atomic Emission Spectroscopy (ICP-AES) is a variant of the more conventional ICP-AES that is widely used for environmental monitoring. The relevance of high-resolution capabilities of three such analytical problems are discussed herein. (1) Pu in very complex, radioactive matrices can be determined with good accuracy without the need for prior chemical separations. Isotopically resolved spectra from actinides in fuel dissolver solutions can be obtained after a simple ion-exchange step. (2) High-resolution methods permit the simultaneous determination of fission products and actinides in simulated high-level nuclear waste solutions. Such measurements can be useful for both safeguards and waste processing. (3) The ICP-AES technique, with a photodiode array detector, can be used to determine the composition of nuclear waste glasses. Such measurements can assist the glass producer as well as providing predictors of nuclear waste form performance in a repository. 16 refs., 5 figs., 4 tabs.

  20. RBS/ERD simulation problems: Stopping powers, nuclear reactions and detector resolution

    NASA Astrophysics Data System (ADS)

    Ziegler, J. F.

    1998-03-01

    A new program has been developed for the graphical analysis of data from Rutherford Back scattering (RBS) and Elastic Recoil Detection (ERD) material analysis experiments. The program can evaluate experiments using any incident ion, at any energy, for any planar target. It incorporates the full stopping power database of the SRIM/TRIM ion beam programs. All scattered ions and recoiling target atoms are followed out of the target and through any filtering absorbers (ERD absorber foils and foils on detector windows). Straggling is included using any of five optional straggling theories. Commonly used nuclear reaction cross-sections are automatically incorporated. By comparison with experimental data, weaknesses in the theoretical basis of RBS/ERD simulations become apparent. These will be discussed with emphasis on stopping powers, detector resolution, target setup and nuclear reaction cross-sections. The complete RBS/ERD software package can be downloaded from the web site: http://www.research.ibm.com/ionbeams. This package includes an installation manual and a full tutorial.

  1. General aviation avionics equipment maintenance

    NASA Technical Reports Server (NTRS)

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

    1978-01-01

    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.

  2. Self-resolution of alcohol problems as a process of investing and re-investing in self.

    PubMed

    Finfgeld, D L

    1999-08-01

    Resolution of alcohol problems without formal treatment or participation in support groups was studied using a grounded theory approach. Thirteen former problem drinkers and their close associates were interviewed, and verbatim transcripts were analyzed using grounded theory methods. The core of self-resolving alcohol problems involves investing and/or reinvesting in self to gain or regain the essence of who or what one wants to be. Self-resolvers tend to independently change for their own benefit rather than the benefit of others, and personal resources may promote or delay the process. The effort required to self-resolve drinking problems varies, and close associates tend to be minority investors in the process. Input from health-care providers regarding the health-related hazards of drinking are largely ignored because threats to who or what one wants to be are perceived as more significant. As such, clinical interventions should emphasize personally relevant threats to self versus focusing solely on the physical consequences of alcohol abuse. PMID:10478499

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

    PubMed Central

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

    2014-01-01

    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

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

    PubMed

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

    2014-08-01

    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

  5. S-Genius, a universal software platform with versatile inverse problem resolution for scatterometry

    NASA Astrophysics Data System (ADS)

    Fuard, David; Troscompt, Nicolas; El Kalyoubi, Ismael; Soulan, Sébastien; Besacier, Maxime

    2013-05-01

    S-Genius is a new universal scatterometry platform, which gathers all the LTM-CNRS know-how regarding the rigorous electromagnetic computation and several inverse problem solver solutions. This software platform is built to be a userfriendly, light, swift, accurate, user-oriented scatterometry tool, compatible with any ellipsometric measurements to fit and any types of pattern. It aims to combine a set of inverse problem solver capabilities — via adapted Levenberg- Marquard optimization, Kriging, Neural Network solutions — that greatly improve the reliability and the velocity of the solution determination. Furthermore, as the model solution is mainly vulnerable to materials optical properties, S-Genius may be coupled with an innovative material refractive indices determination. This paper will a little bit more focuses on the modified Levenberg-Marquardt optimization, one of the indirect method solver built up in parallel with the total SGenius software coding by yours truly. This modified Levenberg-Marquardt optimization corresponds to a Newton algorithm with an adapted damping parameter regarding the definition domains of the optimized parameters. Currently, S-Genius is technically ready for scientific collaboration, python-powered, multi-platform (windows/linux/macOS), multi-core, ready for 2D- (infinite features along the direction perpendicular to the incident plane), conical, and 3D-features computation, compatible with all kinds of input data from any possible ellipsometers (angle or wavelength resolved) or reflectometers, and widely used in our laboratory for resist trimming studies, etching features characterization (such as complex stack) or nano-imprint lithography measurements for instance. The work about kriging solver, neural network solver and material refractive indices determination is done (or about to) by other LTM members and about to be integrated on S-Genius platform.

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

    NASA Technical Reports Server (NTRS)

    DeBonis, James R.

    2013-01-01

    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.

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

    NASA Astrophysics Data System (ADS)

    Usui, Y.; Uehara, M.

    2009-12-01

    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

  8. Resolution of Hyperreninemia, Secondary Hyperaldosteronism, and Hypokalemia With 177Lu-DOTATATE Induction and Maintenance Peptide Receptor Radionuclide Therapy in a Patient With Pancreatic Neuroendocrine Tumor.

    PubMed

    Makis, William; McCann, Karey; Riauka, Terence A; McEwan, Alexander J B

    2015-11-01

    A 54-year-old woman presented with a history of nausea, vomiting, diarrhea, and recurrent episodes of severe hypokalemia requiring hospitalization. Imaging revealed a pancreatic mass with liver metastases, histologically confirmed to be a neuroendocrine tumor. Elevated active renin and aldosterone levels were identified, and the patient was treated with 4 induction cycles of Lu-DOTATATE, which resolved the diarrhea, nausea, and hypokalemia, and normalized the renin and aldosterone levels. After 3 additional maintenance Lu-DOTATATE treatments, the pancreatic tumor had decreased in size, was deemed operable, and was resected. She remains on maintenance Lu-DOTATATE therapy with progression-free survival of 45 months thus far. PMID:26359564

  9. Reputation mechanism: From resolution for truthful online auctions to the model of optimal one-gambler problem

    SciTech Connect

    Bradonjic, Milan

    2009-01-01

    In this paper we study reputation mechanisms, and show how the notion of reputation can help us in building truthful online auction mechanisms. From the mechanism design prospective, we derive the conditions on and design a truthful online auction mechanism. Moreover, in the case when some agents may lay or cannot have the real knowledge about the other agents reputations, we derive the resolution of the auction, such that the mechanism is truthful. Consequently, we move forward to the optimal one-gambler/one-seller problem, and explain how that problem is refinement of the previously discussed online auction design in the presence of reputation mechanism. In the setting of the optimal one-gambler problem, we naturally rise and solve the specific question: What is an agent's optimal strategy, in order to maximize his revenue? We would like to stress that our analysis goes beyond the scope, which game theory usually discusses under the notion of reputation. We model one-player games, by introducing a new parameter (reputation), which helps us in predicting the agent's behavior, in real-world situations, such as, behavior of a gambler, real-estate dealer, etc.

  10. Sibling relationships as sources of risk and resilience in the development and maintenance of internalizing and externalizing problems during childhood and adolescence.

    PubMed

    Dirks, Melanie A; Persram, Ryan; Recchia, Holly E; Howe, Nina

    2015-12-01

    Sibling relationships are a unique and powerful context for children's development, characterized by strong positive features, such as warmth and intimacy, as well as negative qualities like intense, potentially destructive conflict. For these reasons, sibling interactions may be both a risk and a protective factor for the development and maintenance of emotional and behavioral dysfunction. We review evidence indicating that sibling interactions are linked to internalizing and externalizing symptoms and identify possible mechanisms for these associations. Sibling conflict contributes uniquely to symptomatology and may be particularly problematic when accompanied by lack of warmth, which is generally associated with decreased internalizing and externalizing problems. On the other hand, greater warmth can be associated with heightened externalizing symptoms for later-born children who may model the behavior of older siblings. Although it will be important to monitor for increased sibling collusion, several intervention studies demonstrate that it is possible to reduce conflict and increase warmth between brothers and sisters, and that improving sibling interactions can teach children social-cognitive skills that are beneficial in other relationships (e.g., friendships). Developing brief assessment tools differentiating normative from pathogenic sibling conflict would assist clinical decision making. Future intervention work could provide a more stringent test of the hypothesis that strengthening sibling relationships improves children's socio-emotional adjustment. PMID:26254557

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

    PubMed

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

    2015-08-01

    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

  12. Radiometric calibration of IR Fourier transform spectrometers - Solution to a problem with the High-Resolution Interferometer Sounder

    NASA Technical Reports Server (NTRS)

    Revercomb, Henry E.; Smith, William L.; Buijs, H.; Howell, Hugh B.; Laporte, D. D.

    1988-01-01

    A calibrated Fourier transform spectrometer, known as the High-Resolution Interferometer Sounder (HIS), has been flown on the NASA U-2 research aircraft to measure the infrared emission spectrum of the earth. The primary use - atmospheric temperature and humidity sounding - requires high radiometric precision and accuracy (of the order of 0.1 and 1 C, respectively). To meet these requirements, the HIS instruments, the HIS instrument performs inflight radiometric calibration, using observations of hot and cold blackbody reference sources as the basis for two-point calibrations at each wavenumber. Initially, laboratory tests revealed a calibration problem with brightness temperature errors as large as 15 C between 600 and 900/cm. The symptom of the problem, which occurred in one of the three spectral bands of HIS, was a source-dependent phase response. Minor changes to the calibration equations completely eliminated the anomalous errors. The new analysis properly accounts for the situation in which the phase response for radiance from the instrument itself differs from that for radiance from an external source. The mechanism responsible for the dual phase response of the HIS instrument is identified as emission from the interferometer beam splitter.

  13. Maintenance Budgeting.

    ERIC Educational Resources Information Center

    Smith, J. McCree

    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…

  14. Preventative Maintenance.

    ERIC Educational Resources Information Center

    Migliorino, James

    Boards of education must be convinced that spending money up front for preventive maintenance will, in the long run, save districts' tax dollars. A good program of preventive maintenance can minimize disruption of service; reduce repair costs, energy consumption, and overtime; improve labor productivity and system equipment reliability; handle…

  15. Software Maintenance.

    ERIC Educational Resources Information Center

    Cannon, Glenn; Jobe, Holly

    Proper cleaning and storage of audiovisual aids is outlined in this brief guide. Materials and equipment needed for first line maintenance are listed, as well as maintenance procedures for records, audio and video tape, film, filmstrips, slides, realia, models, prints, graphics, maps, and overhead transparencies. A 15-item quiz on software…

  16. Maintenance Downtime

    Atmospheric Science Data Center

    2013-07-10

    ... 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. ...

  17. ASBESTOS PROBLEM RESOLUTION

    EPA Science Inventory

    The paper discusses the variety of regulations applicable to asbestos in buildings, ranging from the Clean Air Act to the Asbestos Hazard Emergency Response Act. Remedial actions are discussed (removal, enclosure and encapsulation) and the ongoing research related to those areas ...

  18. [Medical Equipment Maintenance Methods].

    PubMed

    Liu, Hongbin

    2015-09-01

    Due to the high technology and the complexity of medical equipment, as well as to the safety and effectiveness, it determines the high requirements of the medical equipment maintenance work. This paper introduces some basic methods of medical instrument maintenance, including fault tree analysis, node method and exclusive method which are the three important methods in the medical equipment maintenance, through using these three methods for the instruments that have circuit drawings, hardware breakdown maintenance can be done easily. And this paper introduces the processing methods of some special fault conditions, in order to reduce little detours in meeting the same problems. Learning is very important for stuff just engaged in this area. PMID:26904890

  19. Reaction Control System Thruster Cracking Consultation: NASA Engineering and Safety Center (NESC) Materials Super Problem Resolution Team (SPRT) Findings

    NASA Technical Reports Server (NTRS)

    MacKay, Rebecca A.; Smith, Stephen W.; Shah, Sandeep R.; Piascik, Robert S.

    2005-01-01

    The shuttle orbiter s reaction control system (RCS) primary thruster serial number 120 was found to contain cracks in the counter bores and relief radius after a chamber repair and rejuvenation was performed in April 2004. Relief radius cracking had been observed in the 1970s and 1980s in seven thrusters prior to flight; however, counter bore cracking had never been seen previously in RCS thrusters. Members of the Materials Super Problem Resolution Team (SPRT) of the NASA Engineering and Safety Center (NESC) conducted a detailed review of the relevant literature and of the documentation from the previous RCS thruster failure analyses. It was concluded that the previous failure analyses lacked sufficient documentation to support the conclusions that stress corrosion cracking or hot-salt cracking was the root cause of the thruster cracking and lacked reliable inspection controls to prevent cracked thrusters from entering the fleet. The NESC team identified and performed new materials characterization and mechanical tests. It was determined that the thruster intergranular cracking was due to hydrogen embrittlement and that the cracking was produced during manufacturing as a result of processing the thrusters with fluoride-containing acids. Testing and characterization demonstrated that appreciable environmental crack propagation does not occur after manufacturing.

  20. Applications of high-resolution spatial discretization scheme and Jacobian-free Newton–Krylov method in two-phase flow problems

    SciTech Connect

    Zou, Ling; Zhao, Haihua; Zhang, Hongbin

    2015-09-01

    The majority of the existing reactor system analysis codes were developed using low-order numerical schemes in both space and time. In many nuclear thermal–hydraulics applications, it is desirable to use higher-order numerical schemes to reduce numerical errors. High-resolution spatial discretization schemes provide high order spatial accuracy in smooth regions and capture sharp spatial discontinuity without nonphysical spatial oscillations. In this work, we adapted an existing high-resolution spatial discretization scheme on staggered grids in two-phase flow applications. Fully implicit time integration schemes were also implemented to reduce numerical errors from operator-splitting types of time integration schemes. The resulting nonlinear system has been successfully solved using the Jacobian-free Newton–Krylov (JFNK) method. The high-resolution spatial discretization and high-order fully implicit time integration numerical schemes were tested and numerically verified for several two-phase test problems, including a two-phase advection problem, a two-phase advection with phase appearance/disappearance problem, and the water faucet problem. Numerical results clearly demonstrated the advantages of using such high-resolution spatial and high-order temporal numerical schemes to significantly reduce numerical diffusion and therefore improve accuracy. Our study also demonstrated that the JFNK method is stable and robust in solving two-phase flow problems, even when phase appearance/disappearance exists.

  1. Floors: Selection and Maintenance.

    ERIC Educational Resources Information Center

    Berkeley, Bernard

    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,…

  2. Maintenance of hydrostatic transmissions

    NASA Astrophysics Data System (ADS)

    Esposito, A.

    1981-10-01

    Problems in hydrostatic transmission maintenance are identified and ways of overcoming them are suggested. It is found that problems arise from lack of lubrication, impurities in the oil, and cavitation at the pump and at the motor. It is under suggested that under nonsevere operating conditions, oil and filter should be changed every year, or every 1500 to 2000 hr running time. Under severe operating conditions or in dusty environments, the interval should be every 6 months or 1000 hr.

  3. Landscaping With Maintenance in Mind.

    ERIC Educational Resources Information Center

    Sorensen, Randy

    2000-01-01

    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)

  4. Genetic variation and its maintenance

    SciTech Connect

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

    1986-01-01

    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.

  5. Privatizing Maintenance.

    ERIC Educational Resources Information Center

    Hounsell, Dan

    1996-01-01

    Schools and other government facilities want to see whether privatization of maintenance can provide services as efficiently and at less cost than inhouse workers. Privatization proponents say that everyone will benefit the most if the bidding process involves competition. Offers examples from the Memphis City Schools and the Union Public Schools…

  6. Space Telescope maintenance and refurbishment

    NASA Technical Reports Server (NTRS)

    Trucks, H. F.

    1983-01-01

    The Space Telescope (ST) represents a new concept regarding spaceborne astronomical observatories. Maintenance crews will be brought to the orbital worksite to make repairs and replace scientific instruments. For major overhauls the telescope can be temporarily returned to earth with the aid of the Shuttle. It will, thus, be possible to conduct astronomical studies with the ST for two decades or more. The five first-generation scientific instruments used with the ST include a wide field/planetary camera, a faint object camera, a faint object spectrograph, a high resolution spectrograph, and a high speed photometer. Attention is given to the optical telescope assembly, the support systems module, aspects of mission and science operations, unscheduled maintenance, contingency orbital maintenance, planned on-orbit maintenance, ground maintenance, ground refurbishment, and ground logistics.

  7. Periodontal maintenance.

    PubMed

    Tan, A E S

    2009-09-01

    The main goal of periodontal therapy is to establish an oral environment compatible with periodontal health by the physical disruption of the plaque biofilm and adjunctive chemical means if required. Implicit in this objective is the ongoing requirement of detection and interception of new and recurrent disease, which continues at selected intervals for the life of the dentition after the initial ("active") phase of periodontal treatment. This concept of ongoing periodontal maintenance therapy has been embraced as the mandatory requirement for favourable periodontal outcomes based on institutional clinical trials and in practice-based studies in various parts of the world. This review examines the ramifications of periodontal maintenance therapy based upon a multi-level assessment of logistic issues and risk factors at three levels: (1) The patient level - treatment time; patient attendance compliance; and homecare measures, antiseptics/antibiotics and smoking. (2) The level of the individual tooth - tooth loss; and evaluation of success versus survival. (3) The level of each tooth surface ("site") - probing depth, loss of attachment and bleeding on probing; and changes in clinical attachment levels. In spite of the diversity of studies conducted, there is agreement on the efficacy of periodontal maintenance therapy when compared with studies on untreated populations and in treated cases that were not maintained. PMID:19737263

  8. 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

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

    2012-01-01

    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

  9. UNITED NATION'S RESOLUTION ON ELIMINATION OF FEMALE GENITAL RITUAL: A LEGITIMATE RESPONSE TO A HUMAN RIGHTS PROBLEM OR WHAT?

    PubMed

    Nnamuchi, Obiajulu

    2014-12-01

    A recent United Nations' (U.N.) Resolution, "Intensifying Global Efforts for the Elimination of Female Genital Mutilations," urging all countries to enact legislation outlawing female circumcision or female genital ritual (FGR) signals a disturbingly new frontier in the polemic surrounding the ancient cultural practice. Never before has the apex global institution lent its imprimatur to a project whose foundation is profoundly muddled in uncertainties and murkiness. That the Resolution received an instantaneous and near-universal acclaim as a necessary protective weapon against supposed assault on the human rights of women is not news. After all, aside from essentially validating extant legislative frameworks in several countries, the proclamation fits seamlessly with decades-long agitations of activists, scholars and media pundits of one stripe or the other. What is absurd--indeed, the real news--is continued neglect of calls for a rethinking of the criminalization fervor currently gripping the world, for a reassessment of the evidence trumpeted by abolitionists as justificatory of their unbridled interference in what practicing communities revere as a sacred cultural rite. Relying on the premise that claims regarding harmful impact of FGR, the fulcrum upon which eradication forces depend for their activism, cannot be substantiated, this paper argues that prohibitory regimes based thereon, whether at the U.N. or country level, is per se a violation of the human rights of the women purportedly sought to be protected. Human rights (including, in this case, its self-appointed "apostles"), cannot, as a popular Igbo maxim admonishes, become "outsiders who wept louder than the bereaved." This is the prism from which this paper analyzes the on-going supranational crusade to suppress FGR. It is a critique of extant FGR legal and policy regimes, an instance of which is the U.N. Resolution, as unrepresentative of legitimate advancement of human rights. PMID:27351048

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

    ERIC Educational Resources Information Center

    Dohrenwend, Bruce P.

    2006-01-01

    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…

  11. The Riemann problem and a high-resolution Godunov method for a model of compressible two-phase flow

    NASA Astrophysics Data System (ADS)

    Schwendeman, D. W.; Wahle, C. W.; Kapila, A. K.

    2006-03-01

    This paper considers the Riemann problem and an associated Godunov method for a model of compressible two-phase flow. The model is a reduced form of the well-known Baer-Nunziato model that describes the behavior of granular explosives. In the analysis presented here, we omit source terms representing the exchange of mass, momentum and energy between the phases due to compaction, drag, heat transfer and chemical reaction, but retain the non-conservative nozzling terms that appear naturally in the model. For the Riemann problem the effect of the nozzling terms is confined to the contact discontinuity of the solid phase. Treating the solid contact as a layer of vanishingly small thickness within which the solution is smooth yields jump conditions that connect the states across the contact, as well as a prescription that allows the contribution of the nozzling terms to be computed unambiguously. An iterative method of solution is described for the Riemann problem, that determines the wave structure and the intermediate states of the flow, for given left and right states. A Godunov method based on the solution of the Riemann problem is constructed. It includes non-conservative flux contributions derived from an integral of the nozzling terms over a grid cell. The Godunov method is extended to second-order accuracy using a method of slope limiting, and an adaptive Riemann solver is described and used for computational efficiency. Numerical results are presented, demonstrating the accuracy of the numerical method and in particular, the accurate numerical description of the flow in the vicinity of a solid contact where phases couple and nozzling terms are important. The numerical method is compared with other methods available in the literature and found to give more accurate results for the problems considered.

  12. A Shadowing Problem in the Detection of Overlapping Communities: Lifting the Resolution Limit through a Cascading Procedure

    PubMed Central

    Young, Jean-Gabriel; Allard, Antoine; Hébert-Dufresne, Laurent; Dubé, Louis J.

    2015-01-01

    Community detection is the process of assigning nodes and links in significant communities (e.g. clusters, function modules) and its development has led to a better understanding of complex networks. When applied to sizable networks, we argue that most detection algorithms correctly identify prominent communities, but fail to do so across multiple scales. As a result, a significant fraction of the network is left uncharted. We show that this problem stems from larger or denser communities overshadowing smaller or sparser ones, and that this effect accounts for most of the undetected communities and unassigned links. We propose a generic cascading approach to community detection that circumvents the problem. Using real and artificial network datasets with three widely used community detection algorithms, we show how a simple cascading procedure allows for the detection of the missing communities. This work highlights a new detection limit of community structure, and we hope that our approach can inspire better community detection algorithms. PMID:26461919

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

    PubMed Central

    Dohrenwend, Bruce P.

    2006-01-01

    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

  14. Operational Interventions to Maintenance Error

    NASA Technical Reports Server (NTRS)

    Kanki, Barbara G.; Walter, Diane; Dulchinos, VIcki

    1997-01-01

    A significant proportion of aviation accidents and incidents are known to be tied to human error. However, research of flight operational errors has shown that so-called pilot error often involves a variety of human factors issues and not a simple lack of individual technical skills. In aircraft maintenance operations, there is similar concern that maintenance errors which may lead to incidents and accidents are related to a large variety of human factors issues. Although maintenance error data and research are limited, industry initiatives involving human factors training in maintenance have become increasingly accepted as one type of maintenance error intervention. Conscientious efforts have been made in re-inventing the team7 concept for maintenance operations and in tailoring programs to fit the needs of technical opeRAtions. Nevertheless, there remains a dual challenge: 1) to develop human factors interventions which are directly supported by reliable human error data, and 2) to integrate human factors concepts into the procedures and practices of everyday technical tasks. In this paper, we describe several varieties of human factors interventions and focus on two specific alternatives which target problems related to procedures and practices; namely, 1) structured on-the-job training and 2) procedure re-design. We hope to demonstrate that the key to leveraging the impact of these solutions comes from focused interventions; that is, interventions which are derived from a clear understanding of specific maintenance errors, their operational context and human factors components.

  15. Frequency-domain calculation of the self-force: The high-frequency problem and its resolution

    SciTech Connect

    Barack, Leor; Sago, Norichika; Ori, Amos

    2008-10-15

    The mode-sum method provides a practical means for calculating the self-force acting on a small particle orbiting a larger black hole. In this method, one first computes the spherical-harmonic l-mode contributions F{sub l}{sup {mu}} of the 'full-force' field F{sup {mu}}, evaluated at the particle's location, and then sums over l subject to a certain regularization scheme. In the frequency-domain variant of this procedure the quantities F{sub l}{sup {mu}} are obtained by fully decomposing the particle's self-field into Fourier-harmonic modes lm{omega}, calculating the contribution of each such mode to F{sub l}{sup {mu}}, and then summing over {omega} and m for given l. This procedure has the advantage that one only encounters ordinary differential equations. However, for eccentric orbits, the sum over {omega} is found to converge badly at the particle's location. This problem (reminiscent of the familiar Gibbs phenomenon of Fourier analysis) results from the discontinuity of the time-domain F{sub l}{sup {mu}} field at the particle's worldline. Here we propose a simple and practical method to resolve this problem. The method utilizes the homogeneous modes lm{omega} of the self-field to construct F{sub l}{sup {mu}} (rather than the inhomogeneous modes, as in the standard method), which guarantees an exponentially fast convergence to the correct value of F{sub l}{sup {mu}}, even at the particle's location. We illustrate the application of the method with the example of the monopole scalar-field perturbation from a scalar charge in an eccentric orbit around a Schwarzschild black hole. Our method, however, should be applicable to a wider range of problems, including the calculation of the gravitational self-force using either Teukolsky's formalism, or a direct integration of the metric perturbation equations.

  16. Maintenance Business Plans.

    ERIC Educational Resources Information Center

    Adams, Matt

    2002-01-01

    Discusses maintenance business plans, statements which provide accountability for facilities maintenance organizations' considerable budgets. Discusses the plan's components: statement of plan objectives, macro and detailed description of the facility assets, maintenance function descriptions, description of key performance indicators, milestone…

  17. Reformulation of Density Functional Theory for N-Representable Densities and the Resolution of the v-Representability Problem

    SciTech Connect

    Gonis, A.; Zhang, X. G.; Stocks, G. M.; Nicholson, D. M.

    2015-10-23

    Density functional theory for the case of general, N-representable densities is reformulated in terms of density functional derivatives of expectation values of operators evaluated with wave functions leading to a density, making no reference to the concept of potential. The developments provide a complete solution of the v-representability problem by establishing a mathematical procedure that determines whether a density is v-representable and in the case of an affirmative answer determines the potential (within an additive constant) as a derivative with respect to the density of a constrained search functional. It also establishes the existence of an energy functional of the density that, for v-representable densities, assumes its minimum value at the density describing the ground state of an interacting many-particle system. The theorems of Hohenberg and Kohn emerge as special cases of the formalism.

  18. Reformulation of Density Functional Theory for N-Representable Densities and the Resolution of the v-Representability Problem

    DOE PAGESBeta

    Gonis, A.; Zhang, X. G.; Stocks, G. M.; Nicholson, D. M.

    2015-10-23

    Density functional theory for the case of general, N-representable densities is reformulated in terms of density functional derivatives of expectation values of operators evaluated with wave functions leading to a density, making no reference to the concept of potential. The developments provide a complete solution of the v-representability problem by establishing a mathematical procedure that determines whether a density is v-representable and in the case of an affirmative answer determines the potential (within an additive constant) as a derivative with respect to the density of a constrained search functional. It also establishes the existence of an energy functional of themore » density that, for v-representable densities, assumes its minimum value at the density describing the ground state of an interacting many-particle system. The theorems of Hohenberg and Kohn emerge as special cases of the formalism.« less

  19. New collinear twist-3 analysis of transverse SSA: Toward a resolution for the sign-mismatch problem

    SciTech Connect

    Kanazawa, Koichi; Pitonyak, Daniel; Koike, Yuji; Metz, Andreas

    2014-10-19

    We present a new collinear twist-3 analysis of the transverse SSA AN at RHIC. We use the TMD Sivers/Collins function to fix some of the relevant collinear twist-3 functions and perform a fit of the RHIC data with other parameterized twist-3 functions. This allows us to keep the consistency among descriptions in pp collision, SIDIS, and e+e annihilation and thus could provide a unified description of the spin asymmetries in the low- and high-PT processes. In conclusion, by taking into account the twist-3 fragmentation contribution, we show for the first time this contribution could be the main source of AN in pp → hX and its inclusion could provide a solution for the sign-mismatch problem.

  20. New collinear twist-3 analysis of transverse SSA: Toward a resolution for the sign-mismatch problem

    DOE PAGESBeta

    Kanazawa, Koichi; Pitonyak, Daniel; Koike, Yuji; Metz, Andreas

    2014-10-19

    We present a new collinear twist-3 analysis of the transverse SSA AN at RHIC. We use the TMD Sivers/Collins function to fix some of the relevant collinear twist-3 functions and perform a fit of the RHIC data with other parameterized twist-3 functions. This allows us to keep the consistency among descriptions in pp collision, SIDIS, and e+e– annihilation and thus could provide a unified description of the spin asymmetries in the low- and high-PT processes. In conclusion, by taking into account the twist-3 fragmentation contribution, we show for the first time this contribution could be the main source of ANmore » in pp↑ → hX and its inclusion could provide a solution for the sign-mismatch problem.« less

  1. Maintenance requirements in solar air heating systems

    SciTech Connect

    Lof, G.O.G.; Junk, J.P.

    1983-06-01

    The maintenance requirements of a well designed and constructed solar air-heating system are comparable to those of conventional, forced warm air heating systems. One of the major reasons for this low maintenance is the absence of problems associated with corrosion, freezing, boiling, and leakage often encountered in solar liquid systems. Experience shows that most problems are due to overly complex designs, control problems, faulty installation, and adjustment of the moving parts in the system. Operational histories show negligible requirements for maintenance of air collectors, pebble-bed heat-storage bins, and system ducts and connections. Good quality control in the manufacture and installation of airtight collectors, heat-storage bins, and interconnecting ductwork is essential, however. The paper includes a description of solar air-heating systems and their characteristics, an evaluation of the various maintenance requirements, and several case histories illustrating the handling of solar air system maintenance.

  2. Stick with a School Maintenance Plan

    ERIC Educational Resources Information Center

    Kennedy, Mike

    2012-01-01

    The U.S. Department of Education's "Planning Guide for Maintaining School Facilities" states that a sound facilities maintenance plan serves as evidence that school facilities are, and will be, cared for appropriately. On the other hand, negligent facilities maintenance planning can cause real problems. Budget restraints and cuts in areas not…

  3. Deferred Maintenance Strategies You Must Try.

    ERIC Educational Resources Information Center

    Sturgeon, Julie

    2000-01-01

    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)

  4. Facilities maintenance handbook

    NASA Technical Reports Server (NTRS)

    1991-01-01

    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

  5. Light Vehicle Preventive Maintenance.

    ERIC Educational Resources Information Center

    Marine Corps Inst., Washington, DC.

    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)…

  6. Asphalt in Pavement Maintenance.

    ERIC Educational Resources Information Center

    Asphalt Inst., College Park, MD.

    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…

  7. Maintenance of Mechanical Services. Maintenance and Renewal in Educational Buildings. Building Bulletin 70.

    ERIC Educational Resources Information Center

    Haworth-Roberts, A., Ed.

    School building maintenance must find an appropriate balance between planned and reactive work in order to conserve costs. This document provides ways in which authorities can assess their maintenance requirements and make better use of the resources available. It considers how to deal with problems which have their roots in historical design…

  8. Endo-restorative treatment of a severly discolored upper incisor: resolution of the “aesthetic” problem through Componeer veneering System

    PubMed Central

    Migliau, Guido; Besharat, Laith Konstantinos; Sofan, Afrah Ali Abdullah; Sofan, Eshrak Ali Abdullah; Romeo, Umberto

    2015-01-01

    minimal lost of tooth tissue, easy standardized technique, low cost and immediate restoration of the tooth (without provisional passage). From a radiological point of view it’s possible to check the good quality of endodontic retreatment on the post-operative periapical X-ray. To verify the long-term result Authors consider follow up at six months and one year. Conclusion A multidisciplinary approach is always necessary to program a treatment plan in dentistry; in the case reported Authors decide to perform an endo-conservative treatment with different steps: - root canal therapy to resolve endodontical problem- glass fiber post to reinforce the conservative restoration- direct composite veneer restoration (after bleaching) to obtain the resolution of anterior aesthetic problems. PMID:26941900

  9. Research requirements to reduce maintenance costs of civil helicopters

    NASA Technical Reports Server (NTRS)

    Million, D. J.; Waters, K. T.

    1978-01-01

    The maintenance problems faced by the operators of civil helicopters that result in high costs are documented. Existing technology that can be applied to reduce maintenance costs and research that should be carried out were identified. Good design practice and application of existing technology were described as having a significant impact on reducing maintenance costs immediately. The research and development that have potential for long range reduction of maintenance costs are presented.

  10. Innovation for maintenance technology improvements

    NASA Technical Reports Server (NTRS)

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

    1982-01-01

    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.

  11. Resolution on the population and food equation and the search for rational and efficient solutions to the problem of Third World debt to ensure that the world can eat, 9 September 1989.

    PubMed

    1989-01-01

    In September 1989, the 82nd Inter-Parliamentary Conference passed a resolution "on the population and food equation and the search for rational and efficient solutions to the problem of Third World debt to ensure that the world can eat." This document contains major portions of that resolution. In the area of population, the resolution affirms family planning (FP) as a basic human right and affirms the right of governments to establish their own population policies. Governments are asked to provide the educational opportunities necessary to secure equality and rights for women. Service delivery systems should be improved to make FP accessible to the 300 million women in need. Governments should reduce infant and maternal mortality, promote child care and birth spacing, and increase population education activities. The resolution also states that the creation of peaceful conditions for development is an essential precondition for solving the world's problems. In the area of food, the eradication of hunger is designated one of the primary tasks of the international community. This will only occur when developing countries increase their food production and achieve self-sufficiency. Such action is a basic and primary responsibility of developing countries but creditor nations can provide low interest rates for food import assistance and funds to strengthen the agricultural sector. The resolution further considers the problem of developing country debt and deplores coercive measures applied by certain developed countries against developing countries. The resolution contains many suggestions for reducing debt in developing countries and achieving a more equitable distribution of wealth in the world. In the area of food resources and sustainable development, the resolution acknowledges that protection of the environment and the earth's resource base for future generations is a collective responsibility. Ecological threats to the production of food should be dealt with

  12. Industrial Maintenance Strategies

    SciTech Connect

    Sajjad Akbar

    2006-07-01

    Industrial plants have become more complex due to technological advancement. This has made the task of maintenance more difficult. The maintenance costs in terms of resources and downtime loss are so high that maintenance function has become a critical factor in a plant's profitability. Industry should devote as much forethought to the management of maintenance function as to production. Maintenance has grown from an art to a precise, technical engineering science. Planning, organizing scheduling and control of maintenance using modern techniques pays dividends in the form of reduced costs and increased reliability. The magnitude and the dimension of maintenance have multiplied due to development in the engineering technologies. Production cost and capacities are directly affected by the breakdown time. Total operating cost including the maintenance cost plays an important role in replacement dimension. The integrated system approach would bring forth the desired results of high maintenance standards. The standards once achieved and sustained, would add to the reliability of the plan and relieve heavy stresses and strains on the engineering logistic support. (author)

  13. Product modular design incorporating preventive maintenance issues

    NASA Astrophysics Data System (ADS)

    Gao, Yicong; Feng, Yixiong; Tan, Jianrong

    2016-03-01

    Traditional modular design methods lead to product maintenance problems, because the module form of a system is created according to either the function requirements or the manufacturing considerations. For solving these problems, a new modular design method is proposed with the considerations of not only the traditional function related attributes, but also the maintenance related ones. First, modularity parameters and modularity scenarios for product modularity are defined. Then the reliability and economic assessment models of product modularity strategies are formulated with the introduction of the effective working age of modules. A mathematical model used to evaluate the difference among the modules of the product so that the optimal module of the product can be established. After that, a multi-objective optimization problem based on metrics for preventive maintenance interval different degrees and preventive maintenance economics is formulated for modular optimization. Multi-objective GA is utilized to rapidly approximate the Pareto set of optimal modularity strategy trade-offs between preventive maintenance cost and preventive maintenance interval difference degree. Finally, a coordinate CNC boring machine is adopted to depict the process of product modularity. In addition, two factorial design experiments based on the modularity parameters are constructed and analyzed. These experiments investigate the impacts of these parameters on the optimal modularity strategies and the structure of module. The research proposes a new modular design method, which may help to improve the maintainability of product in modular design.

  14. Effective maintenance: an essential ingredient of successful mining operations

    SciTech Connect

    Tomlingson, P.D.

    1982-12-01

    In today's mining industry the maintenance of production equipment has emerged as a vital function that is getting a significant amount of attention. Mine managers are becoming increasingly aware of the need to improve maintenance practices and accomplish the maintenance function effectively. Costs are a major problem. It is no longer possible for mine management to relegate maintenance to the status of a necessary evil. Maintenance must be managed. It must be an integral part of the whole production strategy. Production managers and supervisors are finding that they must do more than yell for help. They realize now that their input is necessary in planning, scheduling, ensuring preventive maintenance services are adequate, or determining when equipment must be overhauled or replaced. Maintenance departments are having to adopt up-to-date management and control techniques. More sophisticated equipment is demanding higher levels of training and worker proficiency. Analytical procedures are being introduced. Engineering is becoming a necessary element of overall maintenance actions.

  15. A Study on Machine Maintenance Scheduling Using Distributed Cooperative Approach

    NASA Astrophysics Data System (ADS)

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

    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.

  16. Halt Runaway Maintenance Costs.

    ERIC Educational Resources Information Center

    Trotter, Andrew

    1988-01-01

    To keep expensive computer software and hardware functioning requires good housekeeping, some protective equipment, ground rules, and supervision. Schools can arrange microcomputer maintenance through service agreements with computer manufacturers, pay-as-you-go service from local computer stores, or setting up their own maintenance and repair…

  17. Fixing Maintenance Productivity.

    ERIC Educational Resources Information Center

    Fickes, Michael

    2003-01-01

    Describes how one university's facility managers use Nextel communications technology in conjunction with a Famis Software maintenance management system to improve the productivity of its maintenance technicians. The system uses a wireless Internet connection to automate the flow of work order information to and from technicians. The key to these…

  18. Maintenance of School Gymnasiums.

    ERIC Educational Resources Information Center

    Finchum, R. N.

    1965-01-01

    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)…

  19. Maintenance Trades Guidelines

    ERIC Educational Resources Information Center

    Weidner, Theodore J.

    2008-01-01

    In 2002, APPA published "Maintenance Staffing Guidelines for Educational Facilities," the first building maintenance trades staffing guideline designed to assist educational facilities professionals with their staffing needs. addresses how facilities professionals can determine the appropriate size and mix of their organization. Contents include…

  20. Maximizing Hard Floor Maintenance.

    ERIC Educational Resources Information Center

    Steger, Michael

    2000-01-01

    Explains the maintenance options available for hardwood flooring that can help ensure long life cycles and provide inviting spaces. Developing a maintenance system, knowing the type of traffic that the floor must endure, using entrance matting, and adhering to manufacturers guidelines are discussed. Daily, monthly or quarterly, and long-term…

  1. Review of maintenance personnel practices at nuclear power plants

    SciTech Connect

    Chockie, A.D.; Badalamente, R.V.; Hostick, C.J.; Vickroy, S.C.; Bryant, J.L.; Imhoff, C.H.

    1984-05-01

    As part of the Nuclear Regulatory Commission (NRC) sponsored Maintenance Qualifications and Staffing Project, the Pacific Northwest Laboratory (PNL) has conducted a preliminary assessment of nuclear power plant (NPP) maintenance practices. As requested by the NRC, the following areas within the maintenance function were examined: personnel qualifications, maintenance training, overtime, shiftwork and staffing levels. The purpose of the assessment was to identify the primary safety-related problems that required further analysis before specific recommendations can be made on the regulations affecting NPP maintenance operations.

  2. Reduction of Maintenance Error Through Focused Interventions

    NASA Technical Reports Server (NTRS)

    Kanki, Barbara G.; Walter, Diane; Rosekind, Mark R. (Technical Monitor)

    1997-01-01

    It is well known that a significant proportion of aviation accidents and incidents are tied to human error. In flight operations, research of operational errors has shown that so-called "pilot error" often involves a variety of human factors issues and not a simple lack of individual technical skills. In aircraft maintenance operations, there is similar concern that maintenance errors which may lead to incidents and accidents are related to a large variety of human factors issues. Although maintenance error data and research are limited, industry initiatives involving human factors training in maintenance have become increasingly accepted as one type of maintenance error intervention. Conscientious efforts have been made in re-inventing the "team" concept for maintenance operations and in tailoring programs to fit the needs of technical operations. Nevertheless, there remains a dual challenge: to develop human factors interventions which are directly supported by reliable human error data, and to integrate human factors concepts into the procedures and practices of everyday technical tasks. In this paper, we describe several varieties of human factors interventions and focus on two specific alternatives which target problems related to procedures and practices; namely, 1) structured on-the-job training and 2) procedure re-design. We hope to demonstrate that the key to leveraging the impact of these solutions comes from focused interventions; that is, interventions which are derived from a clear understanding of specific maintenance errors, their operational context and human factors components.

  3. 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

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

    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.…

  4. Health Maintenance Organizations and the Elderly: Promises, Problems and Prospects. Hearing before the Select Committee on Aging. House of Representatives, Ninety-Ninth Congress, Second Session (Boynton Beach and Margate, FL). Part II.

    ERIC Educational Resources Information Center

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

    This document contains witness testimonies and prepared statements from the Congressional hearing to examine the efficiency of health maintenance organizations (HMOs) in providing medical care to the elderly. Opening statements are given by Congressmen Mica and Boucher. The hearing is organized into a morning and afternoon session with each…

  5. Powerful drivers for maintenance.

    PubMed

    Mason, Steve

    2013-10-01

    A UPS system is the central building block of a Power Continuity Plan in medical facilities, but such equipment requires careful maintenance to continue fulfilling its vital role in delivering power resilience, and avoid catastrophic downtime, and potentially tens of thousands of pounds in costs to rectify the issues caused by poor maintenance. In our latest technical guidance article, Steve Mason, MD at Bender UK, one of the leading providers of isolated power supplies, theatre control panels, UPS systems, and Steris surgical products, and a turnkey provider of solutions for safe handling of electrical power and advanced provision of critical care products, examines some of the issue surrounding UPS maintenance. PMID:24341105

  6. Power systems handbook: Design, operation and maintenance

    SciTech Connect

    Seevers, O.C.

    1991-01-01

    This handbook contains innovative methods for improving and streamlining all phases of electric utility operation outside the power plant. Part One describes step by step through each element of system operation and maintenance, covering such specifics as land rights, tree clearance, lightning and effective grounding, pole maintenance, switch maintenance, OCR and oil switch maintenance, meter testing, inspections, preventive maintenance, system coordination, substation construction, and effective use of contractors. Also presented is a comprehensive efficiency rating system developed by the author to systematically assess all aspects of operations and determine where improvements are feasible. It describes a simple, accurate and effective computerized load management program which can be used to insure optimum transformer and line loading, phase balance, and system coordination. Maintenance operations may benefit from a time-tested computerized program of trouble analysis which makes it possible to eliminate many potential problems before they occur. Part Two describes twenty-eight unique power system problems which the author has encountered in every phase of operation, and presents a proven solution for each. Covering such scenarios as mysterious equipment failures, unexplained voltages, unanticipated grounding problems, and lightning and icing problems, this section guides one to an understanding of not only the solution, but the systematic assessment process which led to that solution. Phase rotation and phase sequence are explained in clear terms, and difficult calculations involving value of losses, reduced voltage drops, motor dip and system impedances are simplified. This handbook provides a powerful problem-solving desk reference for electric utility engineers, managers and superintendents, as well as for consultants who work within the utility industry.

  7. Maintenance of Automated Library Systems.

    ERIC Educational Resources Information Center

    Epstein, Susan Baerg

    1983-01-01

    Discussion of the maintenance of both the software and hardware in an automated library system highlights maintenance by the vendor, contracts and costs, the maintenance log, downtime, and planning for trouble. (EJS)

  8. Reflective Teaching via a Problem Exploration--Teaching Adaptations--Resolution Cycle: A Mixed Methods Study of Preservice Teachers' Reflective Notes

    ERIC Educational Resources Information Center

    Hayden, H. Emily; Chiu, Ming Ming

    2015-01-01

    We explore development of elementary preservice teachers' reflective practices as they solved problems encountered while teaching in a reading clinic. Written reflections (N = 175) were collected across 8 weeks from 23 preservice teachers and analyzed to investigate relationships among problem exploration, teaching adaptations, and problem…

  9. Getting into Motorcycle Maintenance

    ERIC Educational Resources Information Center

    Mosher, Lynn

    1978-01-01

    This article tells how to start a high school course in motorcycle maintenance and includes names and addresses of some motorcycle manufacturers and a list of needed tools, equipment, and materials. (MF)

  10. Computerized Fleet Maintenance.

    ERIC Educational Resources Information Center

    Cataldo, John J.

    1985-01-01

    The Computerized Fleet Maintenance (CFM) program of a New York school district has major component areas of garage operation, vehicle replacement, and fuel consumption. CFM detects high expenditures and provides the rationale for bus replacement. (MLF)

  11. Carpet Maintenance Guide.

    ERIC Educational Resources Information Center

    Griffin, William R.

    1999-01-01

    Discusses ways to make carpet maintenance in schools easier and effective for keeping carpeted areas in schools attractive and long lasting. Covers cleaning tips for basic spills, ideas for staying on top of stains, and suggestions for eliminating odors. (GR)

  12. Care and Maintenance.

    ERIC Educational Resources Information Center

    Hampton, Carolyn H.; Hampton, Carol D.

    1979-01-01

    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)

  13. Lunar robotic maintenance module

    NASA Technical Reports Server (NTRS)

    Ayres, Michael L.

    1988-01-01

    A design for a robotic maintenance module that will assist a mobile 100-meter lunar drill is introduced. The design considers the following areas of interest: the atmospheric conditions, actuator systems, power supply, material selection, weight, cooling system and operation.

  14. Woodwind Instrument Maintenance.

    ERIC Educational Resources Information Center

    Sperl, Gary

    1980-01-01

    The author presents a simple maintenance program for woodwind instruments which includes the care of tendon corks, the need for oiling keys, and methods of preventing cracks in woodwind instruments. (KC)

  15. Infrared Scanning For Electrical Maintenance

    NASA Astrophysics Data System (ADS)

    Eisenbath, Steven E.

    1983-03-01

    Given the technological age that we have now entered, the purpose of this paper is to relate how infrared scanning can be used for an electrical preventative maintenance program. An infrared scanner is able to produce an image because objects give off infrared radiation in relationship to their temperature. Most electrical problems will show up as an increase in temperature, thereby making the infrared scanner a useful preventative maintenance tool. Because of the sensitivity of most of the scanners, .1 to .2 of a degree, virtually all electrical problems can be pinpointed long before they become a costly failure. One of the early uses of infrared scanning was to check the power company's electrical distribution system. Most of this was performed via aircraft or truck mounted scanning devices which necessitated its semi-permanent mounting. With the advent of small hand held infrared imagers, along with more portability of the larger systems, infrared scanning has gained more popularity in checking electrical distribution systems. But the distribution systems are now a scaled down model, mainly the in-plant electrical systems. By in-plant, I mean any distribution of electricity; once it leaves the power company's grid. This can be in a hospital, retail outlet, warehouse or manufacturing facility.

  16. Generalization and Maintenance of Classroom Treatment Effects.

    ERIC Educational Resources Information Center

    Walker, Hill M.; And Others

    Reported were two experiments which investigated, respectively, the maintenance of appropriate classroom behavior in children with behavior problems following treatment in an experimental classroom and cross situational consistency and generalization of treatment effects. In the first experiment followup performances of two groups of five subjects…

  17. Maintenance and Security Begin at Home

    ERIC Educational Resources Information Center

    School Management, 1974

    1974-01-01

    Sometimes districts can improve their maintenance and security and find more efficient and less costly approaches to both areas when they tap their own personnel resources. Illustrations show how effectively problems have been dealt with by people of talent and ability "within the system." (Author/MLF)

  18. The $7-Billion Patch for Campus Maintenance

    ERIC Educational Resources Information Center

    Carlson, Scott

    2009-01-01

    Colleges are facing a growing deferred-maintenance problem, which at many public institutions adds up to repair bills in the hundreds of millions of dollars. Sometimes state legislatures have not supported those colleges at levels needed to maintain campus infrastructure. But at the same time, colleges continue to expand their campuses even as…

  19. Qualitative Analysis for Maintenance Process Assessment

    NASA Technical Reports Server (NTRS)

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

    1996-01-01

    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.

  20. Towards a General-Purpose Belief Maintenance System.

    ERIC Educational Resources Information Center

    Falkenhainer, Brian

    This paper addresses the problem of probabilistic reasoning as it applies to Truth Maintenance Systems (TMS). A computer-based Belief Maintenance System (BMS) has been constructed which manages a current set of probabilistic beliefs in much the same way that a TMS manages a set of true/false beliefs. It may be thought of as a generalization of a…

  1. Maintenance strategies for greater availability

    SciTech Connect

    Pradhan, S. )

    1994-01-01

    Benchmark studies have confirmed there is a very wide gap in perceived world-class versus actual maintenance performance. To bridge this gap, companies will have to quickly adopt appropriate preventive and predictive maintenance practices and implement total productive maintenance (TPM) and reliability centered maintenance (RCM) practices. In process plants the whole approach to maintenance is slipshod, with a jumble of acronyms like PM/RM/CPM/flexing/multi-skilling, etc., giving a false sense of progress. North American maintenance benchmarks and British maintenance best practice give a very clear picture of current maintenance practices. Both of these studies indicate that breakdown maintenance is the dominant mode of maintenance in the progress industries. There are several key steps to be followed in establishing a strategy for maintenance improvements: (1) Recognize maintenance as an executive function; (2) Establish a solid maintenance performance database; (3) Review the existing plant maintenance practices; (4) Review and understand world-class maintenance practices; and (5) Design a master plan for a world-class system: Define the plant and maintenance resources; Define multi-skilling strategy; Define training and education levels for each job grouping; and Apply, and don't just talk about TPM and RCM.

  2. Developpement de competences de resolution reflexive de problemes environnementaux aupres d'enseignants en formation du Botswana: Apport d'un modele pedagogique base sur une recherche-action participative

    NASA Astrophysics Data System (ADS)

    Gauthier, Benoit

    2000-10-01

    Cette etude s'interesse au developpement de competences de resolution de problemes environnementaux dans un contexte culturel africain. Pour y parvenir, elle elabore un modele pedagogique pouvant se situer dans le cadre theorique de la vision reflexive emergeant presentement en education relative a l'environnement (ERE). Provenant du champ d'etude de la systemique, la methodologie des systemes souples (MSS) s'avere compatible avec le cadre de la reflexivite qui est emergent. Un modele pedagogique preliminaire fut ainsi etabli en transposant et en adaptant plusieurs des principes et des constituantes de la MSS au domaine de l'ERE. Ce modele, s'appuyant sur une strategie de recherche-action, a ete ensuite mis a l'essai aupres d'enseignants du secondaire en formation au Botswana, dans le cadre de leurs activites parascolaires. Cette recherche-developpement de type participatif s'appuie sur une analyse qualitative. Durant sa mise a l'essai, le modele preliminaire a subi plusieurs modifications generees entre autres par les interactions entre les participants et le facilitateur; ces modifications suggerent fortement une prise en charge par les participants de la demarche d'investigation, condition essentielle pour le developpement de competences de resolution de problemes environnementaux. Durant la demarche de resolution du probleme, des competences relatives a l'acquisition de connaissances sur la situation investiguee et a l'action environnementale ont ete sollicitees de maniere repetee. Ceci ne semble pas avoir ete le cas pour les competences associees a la reflexion par les participants sur leurs propres perceptions (metacognition), sur celles des autres ou encore sur la nature de la connaissance (cognition epistemique). En ce qui a trait a la conception de chaque apprenant concernant le probleme environnemental etudie, les observations recueillies tout au long de la demarche suggerent, pour certains des participants, une complexification. Le modele resultant de l

  3. Reliability Centered Maintenance - Methodologies

    NASA Technical Reports Server (NTRS)

    Kammerer, Catherine C.

    2009-01-01

    Journal article about Reliability Centered Maintenance (RCM) methodologies used by United Space Alliance, LLC (USA) in support of the Space Shuttle Program at Kennedy Space Center. The USA Reliability Centered Maintenance program differs from traditional RCM programs because various methodologies are utilized to take advantage of their respective strengths for each application. Based on operational experience, USA has customized the traditional RCM methodology into a streamlined lean logic path and has implemented the use of statistical tools to drive the process. USA RCM has integrated many of the L6S tools into both RCM methodologies. The tools utilized in the Measure, Analyze, and Improve phases of a Lean Six Sigma project lend themselves to application in the RCM process. All USA RCM methodologies meet the requirements defined in SAE JA 1011, Evaluation Criteria for Reliability-Centered Maintenance (RCM) Processes. The proposed article explores these methodologies.

  4. Antimicrobials in periodontal maintenance.

    PubMed

    Jorgensen, M G; Slots, J

    2001-01-01

    Mechanical and chemical antimicrobial intervention is the mainstay of preventive periodontal therapy. Successful periodontal maintenance care depends upon the ability of oral health care professionals to combat periodontal infections, and patient compliance with prescribed follow-up care. Since tooth brushing, flossing, and oral rinsing do not reach pathogens present in furcations and at the depths of deep periodontal pockets, adequate oral hygiene should include subgingival treatment with home irrigators or other appropriate self-care remedies in patients with these conditions. Povidone-iodine for professional use and diluted bleach for self-care are inexpensive and valuable antimicrobial agents in periodontal maintenance. The present article outlines the prudent use of antimicrobial therapy in periodontal maintenance. PMID:11603305

  5. Maintenance simulation: Software issues

    SciTech Connect

    Luk, C.H.; Jette, M.A.

    1995-07-01

    The maintenance of a distributed software system in a production environment involves: (1) maintaining software integrity, (2) maintaining and database integrity, (3) adding new features, and (4) adding new systems. These issues will be discussed in general: what they are and how they are handled. This paper will present our experience with a distributed resource management system that accounts for resources consumed, in real-time, on a network of heterogenous computers. The simulated environments to maintain this system will be presented relate to the four maintenance areas.

  6. 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

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

    2010-01-01

    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…

  7. The Air Force modular automatic test equipment (mate) maintenance concepts

    NASA Astrophysics Data System (ADS)

    Stout, J.; Persans, D.; Caporale, J.

    The Air Force has developed the Modular Automatic Test Equipment (MATE) system as a disciplined approach to the definition, acquisition, and support of automatic test equipment. The system is expressed in a series of guides regarding the hardware, computer program, human factors, and documentation required to implement the considered approach. The present investigation is concerned with the facet of the guidelines which addresses the MATE maintenance concepts. Attention is given to maintenance problems in the field, a MATE system maintenance concept overview, maintenance-oriented tests, integrated diagnostics, the MATE system operational/confidence test scenario, and a MATE system optional self-test.

  8. Raisonnements arithmetiques et algebriques dans un contexte de resolution des problemes: difficultes rencontrees par les futurs enseignants (Arithmetic and Algebra Teaching within a Problem-Solving Context: Difficulties Encountered by Future Instructors).

    ERIC Educational Resources Information Center

    Schmidt, Sylvine; Bednarz, Nadine

    1997-01-01

    Discusses the difficulties observed in the transition from teaching arithmetic to teaching algebra. Future teachers (n=164) were questioned regarding to what extent they were able to shift back and forth between teaching methods within the context of problem solving. Interviews were conducted individually and in a dyad format. (AIM)

  9. Les Representations Graphiques Dans La Resolution De Problemes: Une Experience D'Entrainement D'Etudiants Dans Un Club Mathematique (Graphic Representations in Problem Solving: A Training Program for Students in a Mathematical Club).

    ERIC Educational Resources Information Center

    Callejo, Maria Luz

    1994-01-01

    Reports, in French, an investigation on the use of graphic representations in problem-solving tasks of the type in Spanish Mathematical Olympiads. Analysis showed that the choice and interpretation of the first graphic representation played a decisive role in the discovery of the solution. (34 references) (Author/MKR)

  10. Home Maintenance Manual.

    ERIC Educational Resources Information Center

    Richmond, Jim; And Others

    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…

  11. CH Packaging Maintenance Manual

    SciTech Connect

    Washington TRU Solutions

    2002-01-02

    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.

  12. Floors: Care and Maintenance.

    ERIC Educational Resources Information Center

    Post Office Dept., Washington, DC.

    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…

  13. Diesel Vehicle Maintenance Competencies.

    ERIC Educational Resources Information Center

    Braswell, Robert; And Others

    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,…

  14. Operations and maintenance philosophy

    SciTech Connect

    DUNCAN, G.P.

    1999-10-28

    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.

  15. Maintenance Crisis vs Solutions.

    ERIC Educational Resources Information Center

    Haggard, Susie

    Industrial maintenance in Northeast Georgia is facing an acute crisis. Contributing factors are economic development that is depleting the work force, aging of the population, downsizing of the military, and lack of technical school graduates. Solutions to the crisis fall into three categories: short-term, mid-term, and long-term. For short-term…

  16. Industrial Mechanical Maintenance.

    ERIC Educational Resources Information Center

    Hendrix, Laborn J.

    This manual was developed to assist teachers in Oklahoma in preparing students for industrial mechanical maintenance. The materials in this teacher's guide are organized in 14 units of instruction covering the following four areas: receiving and setting equipment; equipment hookup and operation; equipment layout, anchoring, and setup; and…

  17. Electrical Maintenance Technician.

    ERIC Educational Resources Information Center

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

    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…

  18. Care and Maintenance.

    ERIC Educational Resources Information Center

    Hampton, Carol D.; Hampton, Carolyn H.

    1980-01-01

    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)

  19. Computerized Fleet Maintenance.

    ERIC Educational Resources Information Center

    Cataldo, John J.

    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,…

  20. Summer Roof Maintenance.

    ERIC Educational Resources Information Center

    Liscum, Curtis L.

    1999-01-01

    Presents the items to review in roofing maintenance to prepare for the impact of summer, including checking drainage, roof-field surface and membrane, flashings, sheet metal, and rooftop equipment, such as skylights and penthouses. A list of roofing facts facility managers should know are highlighted. (GR)

  1. School Maintenance Needs

    ERIC Educational Resources Information Center

    Erickson, Paul W.

    2011-01-01

    The United States is full of schools built in the 1950s and 60s that supported the boomer school-age enrollment increase. These schools, once beacons of the neighborhood, are 50 to 60 years old and susceptible to becoming the community "eyesore." Budgeting for maintenance was fairly systematic for school districts for the first 10 to 20 years…

  2. Conflict Resolution for Contrasting Cultures.

    ERIC Educational Resources Information Center

    Clarke, Clifford C.; Lipp, G. Douglas

    1998-01-01

    A seven-step process can help people from different cultures understand each other's intentions and perceptions so they can work together harmoniously: problem identification, problem clarification, cultural exploration, organizational exploration, conflict resolution, impact assessment, and organizational integration. (JOW)

  3. Human factors in aircraft maintenance and inspection

    NASA Technical Reports Server (NTRS)

    Shepherd, William T.

    1992-01-01

    The events which have led to the intensive study of aircraft structural problems have contributed in no less measure to the study of human factors which influence aircraft maintenance and inspection. Initial research emphasis on aging aircraft maintenance and inspection has since broadened to include all aircraft types. Technicians must be equally adept at repairing old and new aircraft. Their skills must include the ability to repair sheet metal and composite materials; control cable and fly-by-wire systems; round dials and glass cockpits. Their work performance is heavily influenced by others such as designers, technical writers, job card authors, schedulers, and trainers. This paper describes the activities concerning aircraft and maintenance human factors.

  4. Exact tensor hypercontraction: a universal technique for the resolution of matrix elements of local finite-range N-body potentials in many-body quantum problems.

    PubMed

    Parrish, Robert M; Hohenstein, Edward G; Schunck, Nicolas F; Sherrill, C David; Martínez, Todd J

    2013-09-27

    Configuration-space matrix elements of N-body potentials arise naturally and ubiquitously in the Ritz-Galerkin solution of many-body quantum problems. For the common specialization of local, finite-range potentials, we develop the exact tensor hypercontraction method, which provides a quantized renormalization of the coordinate-space form of the N-body potential, allowing for a highly separable tensor factorization of the configuration-space matrix elements. This representation allows for substantial computational savings in chemical, atomic, and nuclear physics simulations, particularly with respect to difficult "exchangelike" contractions. PMID:24116775

  5. ROV overcomes deepwater problems

    SciTech Connect

    Frisbie, F.R.; Hughes, E.W.

    1984-09-01

    The use of remotely operated vehicles (ROVs) in supportive drill ships operating in more than 200 meters of water poses severe technical and operational problems. Defining these problems beforehand and addressing them during design, manufacture, testing and installation ensures a functional and effective support capability. Such problems as the availability of desk space, and the subsequent installation, maintenance, and the launch/recovery of the system are described.

  6. Terminal automation system maintenance

    SciTech Connect

    Coffelt, D.; Hewitt, J.

    1997-01-01

    Nothing has improved petroleum product loading in recent years more than terminal automation systems. The presence of terminal automation systems (TAS) at loading racks has increased operational efficiency and safety and enhanced their accounting and management capabilities. However, like all finite systems, they occasionally malfunction or fail. Proper servicing and maintenance can minimize this. And in the unlikely event a TAS breakdown does occur, prompt and effective troubleshooting can reduce its impact on terminal productivity. To accommodate around-the-clock loading at racks, increasingly unattended by terminal personnel, TAS maintenance, servicing and troubleshooting has become increasingly demanding. It has also become increasingly important. After 15 years of trial and error at petroleum and petrochemical storage and transfer terminals, a number of successful troubleshooting programs have been developed. These include 24-hour {open_quotes}help hotlines,{close_quotes} internal (terminal company) and external (supplier) support staff, and {open_quotes}layered{close_quotes} support. These programs are described.

  7. Flight Crew Health Maintenance

    NASA Technical Reports Server (NTRS)

    Gullett, C. C.

    1970-01-01

    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.

  8. Proposed SOLCOST maintenance activities

    SciTech Connect

    1980-01-01

    This document provides a short description of work that has been accomplished to date and work in progress. A discussion of the program status as it is currently configured follows and finally proposed work by Solar Environmental Engineering Company (SEEC) in its most recently signed contract with the Department of Energy (DOE) is given. Early statements are designed to give the reader a good background so that the suggested SOLCOST maintenance activities will be more easily understood.

  9. AUTOMOTIVE DIESEL MAINTENANCE. PROGRAM OUTLINE.

    ERIC Educational Resources Information Center

    Human Engineering Inst., Cleveland, OH.

    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…

  10. PREVENTIVE MAINTENANCE. HONEYWELL PLANNING GUIDE.

    ERIC Educational Resources Information Center

    Honeywell, Inc., Minneapolis, Minn.

    THIS HONEYWELL PAMPHLET DISCUSSES SOME ASPECTS OF PREVENTIVE MAINTENANCE OF AUTOMATIC CONTROLS, HEATING, VENTILATING, AND AIR CONDITIONING, AND COMPARES IN-PLANT WITH CONTRACT SERVICE, CONCLUDING THAT CONTRACT SERVICE IS PREFERABLE AND DESCRIBING A NUMBER OF MAINTENANCE PLANS WHICH THEY FURNISH. PREVENTIVE MAINTENANCE PROVIDES--(1) MORE EFFICIENT…

  11. Designing with Maintenance in Mind.

    ERIC Educational Resources Information Center

    Hoffman, Kisty

    2002-01-01

    When planning for a new facility, consideration of maintenance needs is crucial to successful design. Designing for maintenance needs involves considering such factors as the durability of materials used, the cost and lifecycle of the materials, and the flexibility of the maintenance staff. Stresses the importance of including key members of the…

  12. Paranal maintenance and CMMS experience

    NASA Astrophysics Data System (ADS)

    Montano, Nelson

    2004-10-01

    During the last four years of operations, low technical downtime has been one of the relevant records of the Paranal Observatory. From the beginning of the Very Large Telescope (VLT) project, European Southern Observatory (ESO) has considered the implementation of a proper maintenance strategy a fundamental point in order to ensure low technical down time and preserve the Observatory's assets. The implementation of the maintenance strategy was based on the following aspects: - Strong maintenance sense during the design stage. Line Replacement Unit (LRU) concept, standardization and modularity of the Observatory equipment - Creation of a dedicated team for Maintenance - The implementation of a Computerized Maintenance Management System After four operational years, the result of these aspects has exceeded the expectations; the Observatory has been operating with high availability under a sustainable strategy. The strengths of the maintenance strategy have been based on modern maintenance concepts applied by regular production companies, where any minute of down time involves high cost. The operation of the actual Paranal Maintenance System is based mainly on proactive activities, such as regular inspections, preventive maintenance (PM) and predictive maintenance (PdM) plans. Nevertheless, it has been necessary to implement a strong plan for corrective maintenance (CM). The Spare Parts Strategy has also been an important point linked to the Maintenance Strategy and CMMS implementation. At present, almost 4,000 items related to the Observatory spare parts are loaded into the CMMS database. Currently, we are studying the implementation of a Reliability Centered Maintenance (RCM) project in one of our critical systems The following document presents the actual status of the Paranal Maintenance Strategy and which have been the motivations to implement the established strategy.

  13. Towards automated traceability maintenance.

    PubMed

    Mäder, Patrick; Gotel, Orlena

    2012-10-01

    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

  14. Towards automated traceability maintenance

    PubMed Central

    Mäder, Patrick; Gotel, Orlena

    2012-01-01

    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

  15. Maintenance and supply options

    NASA Technical Reports Server (NTRS)

    1988-01-01

    The object of the Maintenance and Supply Option was to develop a high level operational philosophy related to maintenance and supply operations and incorporate these concepts into the Lunar Base Study. Specific products to be generated during this task were three trade studies and a conceptual design of the Logistic Supply Module. The crew size study was performed to evaluate crew sizes from the baseline size of four to a crew size of eight and determine the preferred crew size. The second trade study was to determine the impact of extending surface stay times and recommend a preferred duration of stay time as a function of crew, consumables, and equipment support capabilities. The third trade study was an evaluation of packaging and storage methods to determine the preferred logistics approach to support the lunar base. A modified scenario was developed and served as the basis of the individual trade studies. Assumptions and guidelines were also developed from experience with Apollo programs, Space Shuttle operations, and Space Station studies. With this information, the trade studies were performed and a conceptual design for the Logistic Supply Module was developed.

  16. Remote maintenance monitoring system

    NASA Technical Reports Server (NTRS)

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

    1992-01-01

    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.

  17. 22 CFR 120.38 - Maintenance levels.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... § 120.38 Maintenance levels. (a) Organizational-level maintenance (or basic-level maintenance) is the first level of maintenance that can be performed “on-equipment” (directly on the defense article or... defense article. (b) Intermediate-level maintenance is second-level maintenance performed...

  18. Augmented reality application utility for aviation maintenance work instruction

    NASA Astrophysics Data System (ADS)

    Pourcho, John Bryan

    Current aviation maintenance work instructions do not display information effectively enough to prevent costly errors and safety concerns. Aircraft are complex assemblies of highly interrelated components that confound troubleshooting and can make the maintenance procedure difficult (Drury & Gramopadhye, 2001). The sophisticated nature of aircraft maintenance necessitates a revolutionized training intervention for aviation maintenance technicians (United States General Accounting Office, 2003). Quite simply, the paper based job task cards fall short of offering rapid access to technical data and the system or component visualization necessary for working on complex integrated aircraft systems. Possible solutions to this problem include upgraded standards for paper based task cards and the use of integrated 3D product definition used on various mobile platforms (Ropp, Thomas, Lee, Broyles, Lewin, Andreychek, & Nicol, 2013). Previous studies have shown that incorporation of 3D graphics in work instructions allow the user to more efficiently and accurately interpret maintenance information (Jackson & Batstone, 2008). For aircraft maintenance workers, the use of mobile 3D model-based task cards could make current paper task card standards obsolete with their ability to deliver relevant, synchronized information to and from the hangar. Unlike previous versions of 3D model-based definition task cards and paper task cards, which are currently used in the maintenance industry, 3D model based definition task cards have the potential to be more mobile and accessible. Utilizing augmented reality applications on mobile devices to seamlessly deliver 3D product definition on mobile devices could increase the efficiency, accuracy, and reduce the mental workload for technicians when performing maintenance tasks (Macchiarella, 2004). This proposal will serve as a literary review of the aviation maintenance industry, the spatial ability of maintenance technicians, and benefits of

  19. Revision of certification standards for aviation maintenance personnel

    NASA Technical Reports Server (NTRS)

    Vipond, Leslie K.

    1992-01-01

    Part 65, Subparts D and E, of the Federal Aviation Regulations (FAR) identify the certification requirements for aviation mechanics and aviation repairmen. The training, experience, privileges, ratings, recordkeeping, and currency requirements for aviation maintenance personnel are also addressed by those parts of the FAR. The recent emergence of the aging fleet problem and the introduction of new technologies, aircraft, engines, and aeronautical products has caused certain portions of these rules to become obsolete. Further, international political arrangements, such as bilateral airworthiness and maintenance agreements, International Civil Aviation Organization (ICAO) standards, certain international agreements for maintenance personnel training, and mechanic certificate reciprocity, have all impacted on the current regulatory policy.

  20. EPRI research publications, products, and expertise in maintenance

    SciTech Connect

    Not Available

    1991-05-01

    The intent of this revision to the original NP-7014D cross-referencing index is to identify EPRI expertise and the associated EPRI products with respect to the Maintenance Issues. Whether prepared by the Nuclear Maintenance Applications Center (NMAC), or other organizations within EPRI, they are being included for information. This document was compiled from the EPRI resource catalogs database. The EPRI/NMAC Project Manager Expertise List provides contact phone numbers for selected maintenance subjects. The EPRI Research, Technical Reports, and Products information provides a listing and brief description of EPRI projects and products by selected maintenance subjects. Additionally, listings of EPRI maintenance-related documents are sorted by document number and title. Certain research reports which contain software have been intentionally omitted due to the lack of (at most utility maintenance departments) computer hardware. The Nuclear Maintenance Applications Center (NMAC) has not reviewed or endorsed the EPRI products listed in this document, except for those produced by NMAC. The planned updating of this cross-reference index is semiannually. Should any further assistance be required for plant-related maintenance problems, contact NMAC at (800) 356-7448.

  1. [Dispute Resolutions].

    ERIC Educational Resources Information Center

    Hale, Claudia L.; Cooks, Leda M.

    1994-01-01

    Focusing on the teaching of alternative dispute resolutions at universities, Claudia L. Hale and Leda M. Cooks argue that mediation should be taught primarily as a communication process that involves the joint efforts of mediator and disputants. Teachers of mediation should begin by distinguishing mediation from other forms of dispute resolution,…

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

    SciTech Connect

    Vesely, W.E.; Rezos, J.T.

    1995-09-01

    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.

  3. Insect maintenance and transmission.

    PubMed

    Kingdom, Heather

    2013-01-01

    Phytoplasmas are plant pathogens of huge economic importance due to responsibility for crop yield losses worldwide. Institutions around the world are trying to understand and control this yield loss at a time when food security is high on government agendas. In order to fully understand the mechanisms of phytoplasma infection and spread, more insect vector and phytoplasma colonies will need to be established for research worldwide. Rearing and study of these colonies is essential in the research and development of phytoplasma control measures. This chapter highlights general materials and methods for raising insect vector colonies and maintenance of phytoplasmas. Specific methods of rearing the maize leafhopper and maize bushy stunt phytoplasma and the aster leafhopper and aster yellows phytoplasma strain witches' broom are also included. PMID:22987405

  4. DCSP hardware maintenance system

    SciTech Connect

    Pazmino, M.

    1995-11-01

    This paper discusses the necessary changes to be implemented on the hardware side of the DCSP database. DCSP is currently tracking hardware maintenance costs in six separate databases. The goal is to develop a system that combines all data and works off a single database. Some of the tasks that will be discussed in this paper include adding the capability for report generation, creating a help package and preparing a users guide, testing the executable file, and populating the new database with data taken from the old database. A brief description of the basic process used in developing the system will also be discussed. Conclusions about the future of the database and the delivery of the final product are then addressed, based on research and the desired use of the system.

  5. Maintenance of certification.

    PubMed

    Rhodes, Robert S

    2007-02-01

    Maintenance of Certification (MOC) is the most recent stage in the evolution of specialty board certification. Driven by increasing concerns over the quality and safety of medical care, MOC represents a change in the frequency and the nature of the requirements of existing recertification. Under MOC, the every 10-year snapshot of professionalism, participation in continuing medical education, and medical expertise that are part of current recertification will become a more continuous process. MOC adds the assessment of practice performance to these measures and represents a philosophical change as well as a requirement change. The focus of these assessments is for improvement rather than judgment. The extent to which MOC succeeds will reflect surgeons' ability to improve the quality of care through voluntary efforts. PMID:17305290

  6. School Building Maintenance Procedures. School Plant Management Series. Bulletin, 1964, No. 17. OE-21027

    ERIC Educational Resources Information Center

    Finchum, R. N.

    1964-01-01

    Adequate maintenance of school buildings representing a public investment of billions of dollars is a problem of grave concern to both taxpayers and school officials. This publication, one of a series dealing with school plant management problems, identifies, describes, shows the function of, and outlines maintenance procedures for many components…

  7. TCMS operations and maintenance philosophy

    NASA Technical Reports Server (NTRS)

    Buehler, David P.; Griffin, Rock E.

    1992-01-01

    The purpose is to describe the basic philosophies of operating and maintaining the Test, Control, and Monitor System (TCMS) equipment. TCMS is a complex and sophisticated checkout system. Operations and maintenance processes developed to support it will be based upon current experience, but will be focused on the specific needs of TCMS in support of Space Station Freedom Program (SSFP) and related activities. An overview of the operations and maintenance goals and philosophies are presented. The assumptions, roles and responsibilities, concepts and interfaces for operation, on-line maintenance, off-line support, and Operations and Maintenance (O&M) personnel training on all TCMS equipment located at KSC are described.

  8. International Conflict Resolution Workshops.

    ERIC Educational Resources Information Center

    Cohen, Stephen P.

    This paper describes two attempts to utilize a conflict resolution approach in academic settings. The approach includes: (1) the significance of the structure of communication between parties in conflict; (2) the understanding of face-to-face interaction processes; (3) problems of perceptual distortion; and (4) political socializations. The…

  9. High resolution drift chambers

    SciTech Connect

    Va'vra, J.

    1985-07-01

    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.

  10. Space shuttle maintenance program planning document

    NASA Technical Reports Server (NTRS)

    Brown, D. V.

    1972-01-01

    A means for developing a space shuttle maintenance program which will be acceptable to the development centers, the operators (KSC and AF), and the manufacturer is presented. The general organization and decision processes for determining the essential scheduled maintenance requirements for the space shuttle orbiter are outlined. The development of initial scheduled maintenance programs is discussed. The remaining maintenance, that is non-scheduled or non-routine maintenance, is directed by the findings of the scheduled maintenance program and the normal operation of the shuttle. The remaining maintenance consists of maintenance actions to correct discrepancies noted during scheduled maintenance tasks, nonscheduled maintenance, normal operation, or condition monitoring.

  11. Illinois Occupational Skill Standards: Industrial Maintenance General Maintenance Cluster.

    ERIC Educational Resources Information Center

    Illinois Occupational Skill Standards and Credentialing Council, Carbondale.

    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…

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

    NASA Technical Reports Server (NTRS)

    Vonholle, Joseph C.

    1987-01-01

    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.

  13. High resolution MR microscopy

    NASA Astrophysics Data System (ADS)

    Ciobanu, Luisa

    Magnetic resonance imaging (MRI) microscopy [1] has the potential to bring the full capabilities of NMR to arbitrarily specified localized positions within small samples. The most interesting target of study is the living biological cell, with typical dimensions ˜100 mum, but with substructures that are much smaller, such as the cell nucleus (typically ˜10 mu m) and mitochondria (1--10 mum). One anticipates that the development of MR microscopy with resolution at the level of these substructures or better and with a wide, three dimensional field-of-view could open a new avenue of investigation into the biology of the living cell. Although the first MR image of a single biological cell was reported in 1987 [2], the cell imaged had quite large (˜1 mm diameter) spatial dimensions and the resolution obtained (on the order of 10 mu m) was not adequate for meaningful imaging of more typically sized cells. The quest for higher resolution has continued. In 1989 Zhou et al. [3] obtained fully three dimensional images with spatial resolution of (6.37 mum)3, or 260 femtoliters. While better "in-plane" resolutions (i.e., the resolution in 2 of the 3 spatial dimensions) have since been obtained, [4, 5] this volume resolution was not exceeded until quite recently by Lee et al., [6] who report 2D images having volume resolution of 75 mum 3 and in-plane resolution of 1 mum. In parallel with these advances in raw resolution several investigators [7, 8, 9] have focused on localized spectroscopy and/or chemical shift imaging. The key obstacles to overcome in MR microscopy are (1) the loss of signal to noise that occurs when observing small volumes and (2) molecular diffusion during the measurement or encoding. To date the problem of sensitivity has typically been addressed by employing small micro-coil receivers. [10] The problem of molecular diffusion can only be defeated with strong magnetic field gradients that can encode spatial information quickly. We report MR microscopy

  14. Cognitive Load and Maintenance Rehearsal.

    ERIC Educational Resources Information Center

    Naveh-Benjamin, Moshe; and Jonides, John

    1984-01-01

    Studies the much-debated issue of the role of rote, repetitive rehearsal (maintenance rehearsal) on the establishment of memory traces that outlast the rehearsal process itself. Results show that there is an effect of maintenance rehearsal on long-term recognition performance and that this effect depends on the mental resources devoted to the…

  15. Automotive Engine Maintenance and Repair.

    ERIC Educational Resources Information Center

    Marine Corps Inst., Washington, DC.

    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…

  16. Maintenance Audit through Value Analysis Technique: A Case Study

    NASA Astrophysics Data System (ADS)

    Carnero, M. C.; Delgado, S.

    2008-11-01

    The increase in competitiveness, technological changes and the increase in the requirements of quality and service have forced a change in the design and application of maintenance, as well as the way in which it is considered within the managerial strategy. There are numerous maintenance activities that must be developed in a service company. As a result the maintenance functions as a whole have to be outsourced. Nevertheless, delegating this subject to specialized personnel does not exempt the company from responsibilities, but rather leads to the need for control of each maintenance activity. In order to achieve this control and to evaluate the efficiency and effectiveness of the company it is essential to carry out an audit that diagnoses the problems that could develop. In this paper a maintenance audit applied to a service company is developed. The methodology applied is based on the expert systems. The expert system by means of rules uses the weighting technique SMART and value analysis to obtain the weighting between the decision functions and between the alternatives. The expert system applies numerous rules and relations between different variables associated with the specific maintenance functions, to obtain the maintenance state by sections and the general maintenance state of the enterprise. The contributions of this paper are related to the development of a maintenance audit in a service enterprise, in which maintenance is not generally considered a strategic subject and to the integration of decision-making tools such as the weighting technique SMART with value analysis techniques, typical in the design of new products, in the area of the rule-based expert systems.

  17. The NEW Good School Maintenance. A Manual of Programs and Procedures for Buildings, Grounds, and Equipment. Second Edition: Revised and Expanded.

    ERIC Educational Resources Information Center

    Harroun, Jack T., Ed.

    This manual is designed to fill two distinct needs in the school maintenance field: (1) a text or resource in training new maintenance staff members and in staff development, and (2) a reference source for the routine tasks and problems encountered in school sanitation and maintenance. Section 1 covers the basics of good school maintenance,…

  18. Robots for Aircraft Maintenance

    NASA Technical Reports Server (NTRS)

    1993-01-01

    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.

  19. Symbolic Constraint Maintenance Grid

    NASA Technical Reports Server (NTRS)

    James, Mark

    2006-01-01

    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.

  20. Cell Maintenance Systems

    NASA Technical Reports Server (NTRS)

    Morrison, D. R.

    1985-01-01

    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.

  1. Applying MORT maintenance safety analysis in Finnish industry

    NASA Astrophysics Data System (ADS)

    Ruuhilehto, Kaarin; Virolainen, Kimmo

    1992-02-01

    A safety analysis method based on MORT (Management Oversight and Risk Tree) method, especially on the version developed for safety considerations in the evaluation of maintenance programs, is presented. The MORT maintenance safety analysis is intended especially for the use maintenance safety management. The analysis helps managers evaluate the goals of their safety work and measures taken to reach them. The analysis is done by a team or teams. The team ought to have expert knowledge of the organization both vertically and horizontally in order to be able to identify factors that may contribute to accidents or other interruptions in the maintenance work. Identification is made by using the MORT maintenance key question set as a check list. The questions check the way safety matters are connnected with the maintenance planning and managing, as well as the safety management itself. In the second stage, means to eliminate the factors causing problems are developed. New practices are established to improve safety of maintenance planning and managing in the enterprise.

  2. Maintenance of an angle between planes of orbits in multisatellite systems

    NASA Astrophysics Data System (ADS)

    Baranov, A. A.; Budyansky, A. A.; Chernov, N. V.

    2015-09-01

    The problem of the maintenance of an angle between planes of orbits in a multisatellite system is considered. It is assumed that one of the satellites is active, to be later used for the servicing of a spacecraft located in an orbit of another level. Simple maintenance of system configuration is also considered. Various schemes of the maintenance of the angle including schemes that provide the minimum angle between the planes of the orbits at the time of the optimal phase mismatch for approach maneuvers. Four examples of the solution of the problem are given that make it possible to estimate the effectiveness of various maintenance schemes.

  3. Health maintenance in women.

    PubMed

    Riley, Margaret; Dobson, Margaret; Jones, Elizabeth; Kirst, Nell

    2013-01-01

    The health maintenance examination is an opportunity to focus on disease prevention and health promotion. The patient history should include screening for tobacco use, alcohol misuse, intimate partner violence, and depression. Premenopausal women should receive preconception counseling and contraception as needed, and all women planning or capable of pregnancy should take 400 to 800 mcg of folic acid per day. High-risk sexually active women should be counseled on reducing the risk of sexually transmitted infections, and screened for chlamydia, gonorrhea, and syphilis. All women should be screened for human immunodeficiency virus. Adults should be screened for obesity and elevated blood pressure. Women 20 years and older should be screened for dyslipidemia if they are at increased risk of coronary heart disease. Those with sustained blood pressure greater than 135/80 mm Hg should be screened for type 2 diabetes mellitus. Women 55 to 79 years of age should take 75 mg of aspirin per day when the benefits of stroke reduction outweigh the increased risk of gastrointestinal hemorrhage. Women should begin cervical cancer screening by Papanicolaou test at 21 years of age, and if results have been normal, screening may be discontinued at 65 years of age or after total hysterectomy. Breast cancer screening with mammography may be considered in women 40 to 49 years of age based on patients' values, and potential benefits and harms. Mammography is recommended biennially in women 50 to 74 years of age. Women should be screened for colorectal cancer from 50 to 75 years of age. Osteoporosis screening is recommended in women 65 years and older, and in younger women with a similar risk of fracture. Adults should be immunized at recommended intervals according to guidelines from the Centers for Disease Control and Prevention. PMID:23317023

  4. Psychological health maintenance on Space Station Freedom

    NASA Technical Reports Server (NTRS)

    Santy, Patricia A.

    1990-01-01

    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.

  5. [Maintenance therapy for colorectal cancer].

    PubMed

    Yamaguchi, Shigeo; Kato, Shunsuke

    2014-08-01

    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

  6. Practical considerations in developing an instrument-maintenance plan--

    SciTech Connect

    Guth, M.A.S. )

    1989-06-01

    The author develops a general set of considerations to explain how a consistent, well-organized, prioritized, and adequate time-allowance program plan for routine maintenance can be constructed. The analysis is supplemented with experience from the high flux isotope reactor (HFIR) at US Oak Ridge National Laboratory (ORNL). After the preventive maintenance (PM) problem was defined, the instruments on the schedule were selected based on the manufacturer's design specifications, quality-assurance requirements, prior classifications, experiences with the incidence of breakdowns or calibration, and dependencies among instruments. The effects of repair error in PM should be also studied. The HFIR requires three full-time technicians to perform both PM and unscheduled maintenance. A review is presented of concepts from queuing theory to determine anticipated breakdown patterns. In practice, the pneumatic instruments have a much longer lifetime than the electric/electronic instruments on various reactors at ORNL. Some special considerations and risk aversion in choosing a maintenance schedule.

  7. The economics of satellite maintenance

    NASA Technical Reports Server (NTRS)

    Derocher, W. L., Jr.; Sosnay, R. G.

    1975-01-01

    The primary goal of the space transportation system - to reduce the cost of space programs while satisfying their mission requirements - can be enhanced by the proper choice of a satellite-maintenance concept. This paper develops the life-cycle costs of performing an automated satellite program during the shuttle era in three competitive modes: expendable, ground-refurbishable, and in-orbit maintainable. In-orbit maintenance is shown to be the most economic maintenance mode for both low- and high-earth orbits.

  8. 49 CFR 214.503 - Good-faith challenges; procedures for notification and resolution.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Roadway Maintenance Machines and Hi-Rail Vehicles § 214.503 Good-faith challenges; procedures for notification and resolution. (a) An employee operating an on-track roadway maintenance machine or hi-rail.... (b) Any employee charged with operating an on-track roadway maintenance machine or hi-rail...

  9. 49 CFR 214.503 - Good-faith challenges; procedures for notification and resolution.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Roadway Maintenance Machines and Hi-Rail Vehicles § 214.503 Good-faith challenges; procedures for notification and resolution. (a) An employee operating an on-track roadway maintenance machine or hi-rail.... (b) Any employee charged with operating an on-track roadway maintenance machine or hi-rail...

  10. 49 CFR 214.503 - Good-faith challenges; procedures for notification and resolution.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Roadway Maintenance Machines and Hi-Rail Vehicles § 214.503 Good-faith challenges; procedures for notification and resolution. (a) An employee operating an on-track roadway maintenance machine or hi-rail.... (b) Any employee charged with operating an on-track roadway maintenance machine or hi-rail...

  11. 49 CFR 214.503 - Good-faith challenges; procedures for notification and resolution.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Roadway Maintenance Machines and Hi-Rail Vehicles § 214.503 Good-faith challenges; procedures for notification and resolution. (a) An employee operating an on-track roadway maintenance machine or hi-rail.... (b) Any employee charged with operating an on-track roadway maintenance machine or hi-rail...

  12. Sirtuins, Tissue Maintenance, and Tumorigenesis

    PubMed Central

    Mohrin, Mary

    2013-01-01

    Aging is a degenerative process resulting in compromised tissue maintenance and increased susceptibility to diseases, such as cancer. Recent advancements support the notion that aging is a highly regulated process governed by evolutionarily conserved pathways. In mammals, tissue-specific adult stem cells (ASCs) persist throughout the lifetime to maintain and repair tissues. While reduced ASC self-renewal is thought to contribute to compromised tissue maintenance, increased self-renewal of cancer stem cells (CSCs) may lead to tumorigenesis. It is speculated that genetic regulators of aging, such as sirtuins, are likely to impinge upon the ASC compartments to regulate tissue maintenance and tumorigenesis. In this review, we discuss the emerging evidence linking sirtuins to normal and malignant ASC self-renewal, tissue maintenance, and tumorigenesis. PMID:24019997

  13. Avionics Maintenance Technology Program Standards.

    ERIC Educational Resources Information Center

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

    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…

  14. 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, ...

  15. Maintenance Downtime March 13, 2015

    Atmospheric Science Data Center

    2015-03-11

    ... Impact:  Due to Earthdata User Registration System (URS) maintenance scheduled Friday 3/13, users may expect potential downtime or degraded service for all subsetters requiring URS login authentication during this time. ...

  16. Managing Custodial and Maintenance Staffs.

    ERIC Educational Resources Information Center

    Fickes, Michael

    2001-01-01

    Presents some basic maintenance management techniques that can help schools meet their budgets, preserve staffing levels, meet productivity needs, and sustain quality services. Tips for staff recruitment, training, and retention are explored. (GR)

  17. 33 CFR 127.401 - Maintenance: General.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...) WATERFRONT FACILITIES WATERFRONT FACILITIES HANDLING LIQUEFIED NATURAL GAS AND LIQUEFIED HAZARDOUS GAS Waterfront Facilities Handling Liquefied Natural Gas Maintenance § 127.401 Maintenance: General. The...

  18. Optimal maintenance of a multi-unit system under dependencies

    NASA Astrophysics Data System (ADS)

    Sung, Ho-Joon

    The availability, or reliability, of an engineering component greatly influences the operational cost and safety characteristics of a modern system over its life-cycle. Until recently, the reliance on past empirical data has been the industry-standard practice to develop maintenance policies that provide the minimum level of system reliability. Because such empirically-derived policies are vulnerable to unforeseen or fast-changing external factors, recent advancements in the study of topic on maintenance, which is known as optimal maintenance problem, has gained considerable interest as a legitimate area of research. An extensive body of applicable work is available, ranging from those concerned with identifying maintenance policies aimed at providing required system availability at minimum possible cost, to topics on imperfect maintenance of multi-unit system under dependencies. Nonetheless, these existing mathematical approaches to solve for optimal maintenance policies must be treated with caution when considered for broader applications, as they are accompanied by specialized treatments to ease the mathematical derivation of unknown functions in both objective function and constraint for a given optimal maintenance problem. These unknown functions are defined as reliability measures in this thesis, and theses measures (e.g., expected number of failures, system renewal cycle, expected system up time, etc.) do not often lend themselves to possess closed-form formulas. It is thus quite common to impose simplifying assumptions on input probability distributions of components' lifetime or repair policies. Simplifying the complex structure of a multi-unit system to a k-out-of-n system by neglecting any sources of dependencies is another commonly practiced technique intended to increase the mathematical tractability of a particular model. This dissertation presents a proposal for an alternative methodology to solve optimal maintenance problems by aiming to achieve the

  19. Maintenance of Mechanical Equipment in Minnesota Schools, 1968 Survey.

    ERIC Educational Resources Information Center

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

    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…

  20. Operation and Maintenance of the 16mm Sound Film Projector.

    ERIC Educational Resources Information Center

    Rampino, Tony; Schexnaydre, Linda

    This manual presents information in seven sections: (1) parts of a 16mm film projector--film transport, threading, control, film projection, and sound system, and film projection correction devices, (2) threading procedures, (3) projection screens, (4) typical operating problems, (5) minor maintenance and repair techniques, (6) hints for the film…

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

    NASA Astrophysics Data System (ADS)

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

    2013-04-01

    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

  2. TPX remote maintenance and shielding

    SciTech Connect

    Rennich, M.J.; Nelson, B.E.

    1994-09-01

    The Tokamak Physics Experiment machine design incorporates comprehensive planning for efficient and safe component maintenance. Three programmatic decisions have been made to insure the successful implementation of this objective. First, the tokamak incorporates radiation shielding to reduce activation of components and limit the dose rate to personnel working on the outside of the machine. This allows most of the ex-vessel equipment to be maintained through conventional ``hands-on`` procedures. Second, to the maximum extent possible, low activation materials will be used inside the shielding volume. This resulted in the selection of Titanium (Ti-6Al-4V) for the vacuum vessel and PFC structures. The third decision stipulated that the primary in-vessel components will be replaced or repaired via remote maintenance tools specifically provided for the task. The component designers have been given the responsibility of incorporating maintenance design and for proving the maintainability of the design concepts in full-scale mockup tests prior to the initiation of final fabrication. Remote maintenance of the TPX machine is facilitated by general purpose tools provided by a special purpose design team. Major tools will include an in-vessel transporter, a vessel transfer system and a large component transfer container. In addition, tools such as manipulators and remotely operable impact wrenches will be made available to the component designers by this group. Maintenance systems will also provide the necessary controls for this equipment.

  3. Preventive Maintenance Study: A Key Component in Engineering Education to Enhance Industrial Productivity and Competitiveness.

    ERIC Educational Resources Information Center

    Nachlas, Joel A.; Cassady, C. Richard

    1999-01-01

    Suggests that a chief contributor to the continued economic success of the western economies will be the productivity gains available through efficient preventative maintenance planning and argues for appropriate changes in engineering curricula. Describes the formulation of maintenance planning problems and illustrates with numerical examples the…

  4. Guidance on Software Maintenance. Final Report. Reports on Computer Science and Technology.

    ERIC Educational Resources Information Center

    Martin, Roger J.; Osborne, Wilma M.

    Based on informal discussions with personnel at selected federal agencies and private sector organizations and on additional research, this publication addresses issues and problems of software maintenance and suggests actions and procedures which can help software maintenance organizations meet the growing demands of maintaining existing systems.…

  5. Committing to the Cost of Ownership: Maintenance and Repair of Public Buildings.

    ERIC Educational Resources Information Center

    National Academy of Sciences - National Research Council, Washington, DC. Building Research Board.

    Guidance for public decision makers and facilities managers in coping with the persistent problem of underfunding of maintenance and repair (M&R) is provided in this report. A committee of experts was selected to review maintenance and repair activities of government agencies and to offer recommendations for improvement, with a focus on…

  6. 18 CFR 367.81 - Maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Maintenance. 367.81... Expense Instructions § 367.81 Maintenance. (a) The cost of maintenance chargeable to the various operating... maintenance work. A list of work operations applicable generally to service company property is included...

  7. 49 CFR 193.2605 - Maintenance procedures.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Maintenance procedures. 193.2605 Section 193.2605...: FEDERAL SAFETY STANDARDS Maintenance § 193.2605 Maintenance procedures. (a) Each operator shall determine... maintenance standards prescribed by this subpart. (b) Each operator shall follow one or more manuals...

  8. 14 CFR 91.405 - Maintenance required.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Maintenance required. 91.405 Section 91.405... AND GENERAL OPERATING RULES GENERAL OPERATING AND FLIGHT RULES Maintenance, Preventive Maintenance, and Alterations § 91.405 Maintenance required. Each owner or operator of an aircraft— (a) Shall...

  9. Iron production maintenance effectiveness system

    SciTech Connect

    Augstman, J.J.

    1996-12-31

    In 1989, an internal study in the Coke and Iron Maintenance Department identified the opportunities available to increase production, by decreasing unscheduled maintenance delays from 4.6%. A five year front loaded plan was developed, and presented to the company president. The plan required an initial investment of $1.4 million and a conservative break-even point was calculated to be 2.5 years. Due to budget restraints, it would have to be self-funded, i.e., generate additional production or savings, to pay for the program. The program began in 1991 at number 2 coke plant and the blast furnaces. This paper will describe the Iron Production Maintenance Effectiveness System (ME), which began with the mechanical and pipefitting trades.

  10. Active maintenance of semantic representations.

    PubMed

    Nishiyama, Ryoji

    2014-12-01

    In research on verbal working memory, articulatory rehearsal, a maintenance mechanism for phonological representations, has undergone intensive and excellent study. Possible mechanisms for semantic representation have received less attention. However, several studies have reported a double dissociation in types of memory deficits (semantic memory difficulties vs. phonological memory difficulties). This suggests the separability of two maintenance mechanisms. The present study focused on this separability in individuals with normal memory abilities, using a dual-task interference paradigm. The results indicate a crossover interaction between memory and interference task effects: Preventing articulatory rehearsal more strongly disrupted the phonological memory task, whereas performing a tapping task that interfered with attentional control more strongly disrupted semantic memory. These results suggest that semantic representations are actively maintained by a mechanism other than phonological maintenance. PMID:24687734

  11. NASA Critical Facilities Maintenance Assessment

    NASA Technical Reports Server (NTRS)

    Oberhettinger, David J.

    2006-01-01

    Critical Facilities Maintenance Assessment (CFMA) was first implemented by NASA following the March 2000 overtest of the High Energy Solar Spectroscopic Imager (HESSI) spacecraft. A sine burst dynamic test using a 40 year old shaker failed. Mechanical binding/slippage of the slip table imparted 10 times the planned force to the test article. There was major structural damage to HESSI. The mechanical "health" of the shaker had not been assessed and tracked to assure the test equipment was in good working order. Similar incidents have occurred at NASA facilities due to inadequate maintenance (e.g., rainwater from a leaky roof contaminated an assembly facility that housed a spacecraft). The HESSI incident alerted NASA to the urgent need to identify inadequacies in ground facility readiness and maintenance practices. The consequences of failures of ground facilities that service these NASA systems are severe due to the high unit value of NASA products.

  12. Maintenance of photovoltaic power systems. Revision 1. Maintenance manual

    SciTech Connect

    Hall, M.R.

    1985-06-01

    This publication establishes standard practices for inspection, testing, and maintenance of photovoltaic power systems at Department of the Navy installations. The practices and procedures are recommended to ensure reliable operation of the power systems. The manual covers photovoltaic-array, battery, voltage-regulator, inverter, and wiring subsystems. In addition, this manual provides a troubleshooting guide and self-study questions and answers.

  13. IAQ: An operation and maintenance perspective

    SciTech Connect

    Tamblyn, B.T.; Khandekar, S. )

    1994-07-01

    This article describes training, documentation and monitoring as the key strategies for sustaining good indoor air quality in commercial buildings. Over 500 commercial buildings have been investigated by an engineering consulting company to determine their indoor air quality (IAQ) and then to improve the functioning of their HVAC systems. The HVAC problems encountered in these buildings were categorized as resulting from deficiencies in maintenance, operation, control, design, occupancy, air balancing and documentation of building systems. When unattended, these deficiencies lead to problems that were identified as IAQ-related problems. By determining the relationship between the IAQ problems and the deficiencies, the engineers were able to develop solutions to improve the buildings' indoor air quality. Further work in these buildings focused on total building performance. The result of this work has been the development of a methodology for training the building operators, and the development of building operation manuals, building operation logs and building automation system trend logs. Guidelines for performance standards to maintain good IAQ were also developed for the building operators and managers.

  14. 1980 Resolutions: National Association for Asian and Pacific American Education.

    ERIC Educational Resources Information Center

    National Association for Asian and Pacific American Education, Berkeley, CA.

    This paper contains nineteen resolutions adopted by the National Association for Asian and Pacific American Education (NAAPAE). The resolutions concern (1) the maintenance of Asian/Pacific American linguistic and cultural traditions by educational institutions, (2) the support of Asian/Pacific American studies programs, (3) NAAPAE support of…

  15. A Grounded Theory Study of Aircraft Maintenance Technician Decision-Making

    NASA Astrophysics Data System (ADS)

    Norcross, Robert

    Aircraft maintenance technician decision-making and actions have resulted in aircraft system errors causing aircraft incidents and accidents. Aircraft accident investigators and researchers examined the factors that influence aircraft maintenance technician errors and categorized the types of errors in an attempt to prevent similar occurrences. New aircraft technology introduced to improve aviation safety and efficiency incur failures that have no information contained in the aircraft maintenance manuals. According to the Federal Aviation Administration, aircraft maintenance technicians must use only approved aircraft maintenance documents to repair, modify, and service aircraft. This qualitative research used a grounded theory approach to explore the decision-making processes and actions taken by aircraft maintenance technicians when confronted with an aircraft problem not contained in the aircraft maintenance manuals. The target population for the research was Federal Aviation Administration licensed aircraft and power plant mechanics from across the United States. Nonprobability purposeful sampling was used to obtain aircraft maintenance technicians with the experience sought in the study problem. The sample population recruitment yielded 19 participants for eight focus group sessions to obtain opinions, perceptions, and experiences related to the study problem. All data collected was entered into the Atlas ti qualitative analysis software. The emergence of Aircraft Maintenance Technician decision-making themes regarding Aircraft Maintenance Manual content, Aircraft Maintenance Technician experience, and legal implications of not following Aircraft Maintenance Manuals surfaced. Conclusions from this study suggest Aircraft Maintenance Technician decision-making were influenced by experience, gaps in the Aircraft Maintenance Manuals, reliance on others, realizing the impact of decisions concerning aircraft airworthiness, management pressures, and legal concerns

  16. 14 CFR 91.1425 - CAMP: Maintenance, preventive maintenance, and alteration programs.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false CAMP: Maintenance, preventive maintenance... RULES Fractional Ownership Operations Program Management § 91.1425 CAMP: Maintenance, preventive... have an inspection program and a program covering other maintenance, preventive maintenance,...

  17. 14 CFR 121.377 - Maintenance and preventive maintenance personnel duty time limitations.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Maintenance and preventive maintenance personnel duty time limitations. 121.377 Section 121.377 Aeronautics and Space FEDERAL AVIATION..., Preventive Maintenance, and Alterations § 121.377 Maintenance and preventive maintenance personnel duty...

  18. 14 CFR 121.377 - Maintenance and preventive maintenance personnel duty time limitations.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 3 2011-01-01 2011-01-01 false Maintenance and preventive maintenance personnel duty time limitations. 121.377 Section 121.377 Aeronautics and Space FEDERAL AVIATION..., Preventive Maintenance, and Alterations § 121.377 Maintenance and preventive maintenance personnel duty...

  19. 14 CFR 121.377 - Maintenance and preventive maintenance personnel duty time limitations.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 3 2014-01-01 2014-01-01 false Maintenance and preventive maintenance personnel duty time limitations. 121.377 Section 121.377 Aeronautics and Space FEDERAL AVIATION..., Preventive Maintenance, and Alterations § 121.377 Maintenance and preventive maintenance personnel duty...

  20. 14 CFR 121.377 - Maintenance and preventive maintenance personnel duty time limitations.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 3 2012-01-01 2012-01-01 false Maintenance and preventive maintenance personnel duty time limitations. 121.377 Section 121.377 Aeronautics and Space FEDERAL AVIATION..., Preventive Maintenance, and Alterations § 121.377 Maintenance and preventive maintenance personnel duty...

  1. 14 CFR 121.377 - Maintenance and preventive maintenance personnel duty time limitations.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 3 2013-01-01 2013-01-01 false Maintenance and preventive maintenance personnel duty time limitations. 121.377 Section 121.377 Aeronautics and Space FEDERAL AVIATION..., Preventive Maintenance, and Alterations § 121.377 Maintenance and preventive maintenance personnel duty...

  2. The problem of pain.

    PubMed

    Nicholson, Keith; Martelli, Michael F

    2004-01-01

    Pain problems, especially posttraumatic headache, are very common following head trauma. Pain may be the most significant problem, more disabling than any brain or other injuries, and interfering with aspects of cognition or other function. However, posttraumatic headache and most other chronic posttraumatic pain problems remain poorly understood. This article reviews fundamental issues that should be considered in understanding the nature of chronic pain including the distinction between acute and chronic pain; neurobiological distinctions between the lateral and medial pain system; nociceptive versus neuropathic or other central pain; sensitization effects; the widely accepted view of chronic pain as a multidimensional subjective experience involving sensory, motivational-affective and cognitive-behavioral components; the problem of mind-body dualism; the role of psychosocial factors in the onset, maintenance, exacerbation or severity of pain; plus issues of response bias and malingering. PMID:14732827

  3. Conventional anticancer therapeutics and telomere maintenance mechanisms.

    PubMed

    Uziel, Orit; Lahav, Meir

    2014-01-01

    The telomere-telomerase system has a unique role in the biology of cancer. Telomere maintenance, mostly affected by the up regulation of telomerase activity, is a prerequisite for perpetuation of malignant cells. This fundamental biologic feature defines telomere maintenance as an attractive therapeutic target for most types of cancer. This review summarizes some critical aspects of telomere biology with special emphasis on the connection to anticancer therapy. In particular, the effects on the telomere - telomerase system of conventional anticancer treatments, including various cytotoxic drugs, targeted biological agents and radiotherapy, and their possible combination with telomerase-directed therapy are discussed. Several potential problems, including side effects and complications inherent to perturbations of telomere biology in normal cells, are also highlighted. In spite of significant progress in this field, there are still several issues that have to be addressed and ultimately resolved in order to obtain a better characterization of the pros and cons of telomerase-directed therapies and, consequently, their clinical relevance. PMID:24975606

  4. Circassian Language Maintenance in Jordan

    ERIC Educational Resources Information Center

    Rannut, Ulle

    2009-01-01

    The central goal of this research is to explore the language policy aspects in Jordan by focusing on the Circassian language maintenance issues and to provide measures for language revitalisation in the current demographic, linguistic and political situation. Research is based on multiple sources of information, but primarily on the empirical data…

  5. Drive alignment pays maintenance dividends

    SciTech Connect

    Fedder, R.

    2008-12-15

    Proper alignment of the motor and gear drive on conveying and processing equipment will result in longer bearing and coupling life, along with lower maintenance costs. Selecting an alignment free drive package instead of a traditional foot mounted drive and motor is a major advancement toward these goals. 4 photos.

  6. Electrical Mechanical Maintenance. Instructor's Guide.

    ERIC Educational Resources Information Center

    Santa Clara County Superintendent of Schools, San Jose, CA.

    This instructor's guide describes the development of a sixteen-week postsecondary course in electrical mechanical maintenance. Following introductory sections that provide background information and a course summary, the third section describes the instructional model used in the course. Section 4 presents an overview of instructional media used…

  7. Maintenance of photovoltaic power systems

    NASA Astrophysics Data System (ADS)

    Hall, M. R.

    1984-08-01

    This publication establishes standard practices for inspection, testing, and maintenance of photovoltaic power systems at Dept. of the Navy installations. The practices and procedures are recommended to ensure reliable operation of the power systems. The manual covers photovoltaic-array, battery, voltage-regulator, inverter, and wiring subsystems. In addition, this manual provides a troubleshooting guide and self-study questions and answers.

  8. Maintenance of photovoltaic power systems

    SciTech Connect

    Hall, M.R.

    1984-08-01

    This publication establishes standard practices for inspection, testing, and maintenance of photovoltaic power systems at Department of the Navy installations. The practices and procedures are recommended to ensure reliable operation of the power systems. The manual covers photovoltaic-array, battery, voltage-regulator, inverter, and wiring subsystems. In addition, this manual provides a troubleshooting guide and self-study questions and answers.

  9. The Benefits of Health Maintenance.

    ERIC Educational Resources Information Center

    Rosenstein, Alan H.

    1987-01-01

    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)

  10. Afrikaans Language Maintenance in Australia

    ERIC Educational Resources Information Center

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

    2011-01-01

    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…

  11. Maintenance Sessions Prolong Cigarette Abstinence.

    ERIC Educational Resources Information Center

    Brandon, Thomas H.; And Others

    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…

  12. Avionics Maintenance Technology Program Guide.

    ERIC Educational Resources Information Center

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

    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…

  13. Locker Room Maintenance Made Easy.

    ERIC Educational Resources Information Center

    Theel, James

    1998-01-01

    Provides examples on ways to make locker room maintenance easier and their use more student-friendly. Improvements include use of indoor-outdoor carpeting with numerous floor drains to cut mildew buildup, adequate ventilation to reduce musty smells, better hot water management, ceramic tiles to reduce water-damage repair and painting needs, and…

  14. Laboratory Maintenance of Rickettsia rickettsii

    PubMed Central

    Beier-Sexton, Magda; Azad, Abdu F.

    2009-01-01

    This unit includes protocols for the laboratory maintenance of the obligate intracellular bacterium Rickettsia rickettsii, including propagation in mammalian cell cultures, as well as isolation, counting, and storage procedures. Regulations for working with R. rickettsii in biosafety level 3 containment are also discussed. PMID:19016440

  15. New Directions in Maintenance Simulation.

    ERIC Educational Resources Information Center

    Miller, Gary G.

    A two-phase effort was conducted to design and evaluate a maintenance simulator which incorporated state-of-the-art information in simulation and instructional technology. The particular equipment selected to be simulated was the 6883 Convert/Flight Controls Test Station. Phase I included a generalized block diagram of the computer-trainer, the…

  16. Maintenance Sourcebook: A Caretaker's Manual.

    ERIC Educational Resources Information Center

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

    2002-01-01

    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)

  17. Checklist for School Maintenance Surveys.

    ERIC Educational Resources Information Center

    Maryland State Dept. of Education, Baltimore.

    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…

  18. Computer-Assisted School Maintenance

    ERIC Educational Resources Information Center

    Kennedy, Mike

    2012-01-01

    At thousands of schools and universities, years of economic troubles have led to repeated budget cuts. The reductions typically fall disproportionately on maintenance departments, where cuts are viewed as less critical than those that directly affect classroom instruction. And so nearly every facility manager at an education institution faces a…

  19. Building Maintenance. Student Learning Guide.

    ERIC Educational Resources Information Center

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

    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…

  20. Laboratory Maintenance of Acinetobacter baumannii.

    PubMed

    Jacobs, Anna C; Zurawski, Daniel V

    2014-01-01

    Acinetobacter baumannii has recently drawn great interest in the microbiology research community due to the increase in clinical antibiotic resistance of this organism, and persistence of this bacterial species in the hospital environment. This unit outlines protocols for the growth and maintenance of A. baumannii in the laboratory. PMID:25367273

  1. Dynamic Evolution of Squeezing Maintenance

    NASA Astrophysics Data System (ADS)

    Wan, Zhi-Long; Fan, Hong-Yi

    2016-08-01

    By virtue of the coherent state representation and solving Riccati equation we derive dynamic evolution operator for maintaining squeezing, i.e., we demonstrate that the final state keeps squeezing when the initial state is a squeezed vacuum state. The number-phase squeezing maintenance mechanism is also studied.

  2. Test evaluation of space station ECLSS maintenance concepts. [Environmental Control and Life Support System

    NASA Technical Reports Server (NTRS)

    Reysa, R. P.; Flugel, C. W.; Thompson, C. D.

    1978-01-01

    The Space Station Prototype (SSP) Environmental Control and Life Support System (ECLSS) hardware was designed and built to be maintainable by the flight crew. To achieve this goal, subsystems were designed for ease of component removal and installation, which included accessibility to component fasteners and connectors, adequate tool clearance, minimum fluid loss during changeout, positive capture of loose parts during changeout, replacement by one crewman, and protection of adjacent parts during maintenance. During testing of this hardware, many day-to-day problems arose which allowed the evaluation of the maintenance concepts under actual maintenance conditions. This paper briefly discusses the maintenance objectives of the hardware design. Specific maintenance designs and their test evaluations are discussed. A removable cartridge valve concept for liquid line components and threaded mechanical fittings and V-band couplings for gaseous line components are critiqued. Other maintenance devices are also evaluated.

  3. High resolution analysis

    NASA Technical Reports Server (NTRS)

    Robinove, C. J.

    1982-01-01

    The possibilities for the use of high spectral resolution analysis in the field of hydrology and water resources are examined. Critical gaps in scientific knowledge that must be filled before technology can be evaluated involve the spectral response of water, substances dissolved and suspended in water, and substances floating on water. The most complete mapping of oil slicks can be done in the ultraviolet region. A mean of measuring the ultraviolet reflection at the surface from satellite altitudes needs to be determined. The use of high spectral resolution sensors in a reasonable number of narrow bands may be able to sense the reflectance or emission characteristics of water and its contained materials that can be correlated with commonly used water quality variables. Technological alternative available to experiment with problems of sensing water quality are to use existing remote sensing instrumentation in an empirical mode and to develop instruments for either testing hypoteses or conducting empirical experiments.

  4. Problem Periods

    MedlinePlus

    ... gov/ Home Body Getting your period Problem periods Problem periods It’s common to have cramps or feel ... doctor Some common period problems Signs of period problems top One way to know if you may ...

  5. Balance Problems

    MedlinePlus

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

  6. 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 ...

  7. Potassium Balances in Maintenance Hemodialysis

    PubMed Central

    Choi, Hoon Young

    2013-01-01

    Potassium is abundant in the ICF compartment in the body and its excretion primarily depends on renal (about 90%), and to a lesser extent (about 10%) on colonic excretion. Total body potassium approximated to 50mmol/kg body weight and 2% of total body potassium is in the ECF compartment and 98% of it in the intracellular compartment.Dyskalemia is a frequent electrolyte imbalance observed among the maintenance hemodialysis patients. In case of hyperkalemia, it is frequently "a silent and a potential life threatening electrolyte imbalance" among patients with ESRD under maintenance hemodialysis. The prevalence of hyperkalemia in maintenance HD patients was reported to be about 8.7-10%. Mortality related to the hyperkalemia has been shown to be about 3.1/1,000 patient-years and about 24% of patients with HD required emergency hemodialysis due to severe hyperkalemia. In contrast to the hyperkalemia, much less attention has been paid to the hypokalemia in hemodialysis patients because of the low prevalence under maintenance hemodialysis patients. Severe hypokalemia in the hemodialysis patients usually was resulted from low potassium intake (malnutrition), chronic diarrhea, mineralocorticoid use, and imprudent use of K-exchange resins. Recently, the numbers of the new patients with advanced chronic kidney disease undergoing maintenance hemodialysis are tremendously increasing worldwide. However, the life expectancy of these patients is still much lower than that of the general population. The causes of excess mortality in these patients seem to various, but dyskalemia is a common cause among the patients with ESRD undergoing hemodialysis. PMID:23946760

  8. Geophysical methods for road construction and maintenance

    NASA Astrophysics Data System (ADS)

    Rasul, Hedi; Karlson, Caroline; Jamali, Imran; Earon, Robert; Olofsson, Bo

    2015-04-01

    Infrastructure, such as road transportation, is a vital in civilized societies; which need to be constructed and maintained regularly. A large part of the project cost is attributed to subsurface conditions, where unsatisfactory conditions could increase either the geotechnical stabilization measures needed or the design cost itself. A way to collect information of the subsurface and existing installations which can lead to measures reducing the project cost and damage is to use geophysical methods during planning, construction and maintenance phases. The moisture in road layers is an important factor, which will affect the bearing capacity of the construction as well as the maintenances. Moisture in the road is a key factor for a well-functioning road. On the other hand the excessive moisture is the main reason of road failure and problems. From a hydrological point of view geophysical methods could help road planners identify the water table, geological strata, pollution arising from the road and the movement of the pollution before, during and after construction. Geophysical methods also allow road planners to collect valuable data for a large area without intrusive investigations such as with boreholes, i.e. minimizing the environmental stresses and costs. However, it is important to specify the investigation site and to choose the most appropriate geophysical method based on the site chosen and the objective of the investigation. Currently, numerous construction and rehabilitation projects are taking places around the world. Many of these projects are focused on infrastructural development, comprising both new projects and expansion of the existing infrastructural network. Geophysical methods can benefit these projects greatly during all phases. During the construction phase Ground Penetrating radar (GPR) is very useful in combination with Electrical Resistivity (ER) for detecting soil water content and base course compaction. However, ER and Electromagnetic

  9. Tutoring electronic troubleshooting in a simulated maintenance work environment

    NASA Technical Reports Server (NTRS)

    Gott, Sherrie P.

    1987-01-01

    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.

  10. Maintenance of white adipose tissue in man.

    PubMed

    Hyvönen, Mervi T; Spalding, Kirsty L

    2014-11-01

    Obesity is increasing in an epidemic manner in most countries and constitutes a public health problem by enhancing the risk for diseases such as diabetes, fatty liver disease and atherosclerosis. Together these diseases form a cluster referred to as the metabolic syndrome. Despite the negative health consequences associated with excess adipose tissue, very little is known about the origin and maintenance of white adipose tissue in man. In this review we discuss what is known about the turnover of adult human adipocytes and their precursors, as well as adipose tissue heterogeneity, plasticity and developmental origins. The focus of this review is human tissue, however in many cases human data are missing and are inferred from animal studies. As such, reference to animal studies are made where human data is not available. This article is part of a directed issue entitled: Regenerative Medicine: the challenge of translation. PMID:25240584

  11. Crustal growth: Some major problems

    NASA Technical Reports Server (NTRS)

    Arculus, R. J.

    1988-01-01

    Fundamental problems with models currently used to explain the genesis and evolution of continental crust were raised. These problems focus around the difficulty of generating the upper continental crust from a lower crustal or mantle protolith without leaving a very large, and so far undetected, volume of restite. No conclusive resolution to the problems was achieved.

  12. Implementation of an agile maintenance mechanic assignment methodology

    NASA Astrophysics Data System (ADS)

    Jimenez, Jesus A.; Quintana, Rolando

    2000-10-01

    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.

  13. Tools to support maintenance strategies under soft soil conditions

    NASA Astrophysics Data System (ADS)

    Lambert, J. W. M.; van Meerten, J. J.; Woning, M. P.; Eijbersen, M. J.; Huber, M.

    2015-11-01

    Costs for maintenance of infrastructure in municipalities with soft soil underground conditions, are estimated to be almost 40 % higher than in others. As a result, these municipalities meet financial problems that cause overdue maintenance. In some cases municipalities are even afraid to be unable to offer a minimum service level in future. In common, traditional practice, roads and sewerage systems have been constructed in trenches that consist of sandy material that replaces the upper meters of the soft soil. Under influence of its weight, this causes accelerated settlements of the construction. A number of alternative constructions have been developed, e.g. using light-weight materials to limit settlement velocity. In order to limit future maintenance costs, improvement of maintenance strategies is desired. Tools have been and will be developed to support municipalities in improving their maintenance strategies and save money by doing that. A model (BALANS) that weighs the attractiveness of alternative solutions under different soil, environmental and economic circumstances, will be presented.

  14. Maintenance of defibrillators in a state of readiness.

    PubMed

    White, R D

    1993-02-01

    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

  15. The Evidence Regarding Maintenance Tocolysis

    PubMed Central

    Elliott, John P.; Morrison, John C.

    2013-01-01

    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

  16. Mining Surveillance and Maintenance Dollars

    SciTech Connect

    MARTINEZ, R.

    2000-02-01

    Accelerating site cleanup to reduce facility risks to the workers, the public and the environment during a time of declining federal budgets represents a significant technical and economic challenge to U.S. Department of Energy (DOE) Operations Offices and their respective contractors. A significant portion of a facility's recurring annual expenses are associated with routine, long-term surveillance and maintenance (S&M) activities. However, ongoing S&M activities do nothing to reduce risks and basically spend money that could be reallocated towards facility deactivation. This paper discusses the background around DOE efforts to reduce surveillance and maintenance costs, one approach used to perform cost reviews, lessons learned from field implementation and what assistance is available to assist DOE sites in performing these evaluations.

  17. Orbital assembly and maintenance study

    NASA Technical Reports Server (NTRS)

    Gorman, D.; Grant, C.; Kyrias, G.; Lord, C.; Rombach, J.; Salis, M.; Skidmore, R.; Thomas, R.

    1975-01-01

    The requirements, conceptual design, tradeoffs, procedures, and techniques for orbital assembly of the support structure of the microwave power transmission system and the radio astronomy telescope are described. Thermal and stress analyses, packaging, alignment, and subsystems requirements are included along with manned vs. automated and transportation tradeoffs. Technical and operational concepts for the manned and automated maintenance of satellites were investigated and further developed results are presented.

  18. Designing a scrubber for maintenance

    SciTech Connect

    Mahlmeister, M.E.; Baron, E.S.; Watts, J.

    1996-12-01

    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.

  19. Demonstration of reliability centered maintenance

    SciTech Connect

    Schwan, C.A.; Morgan, T.A. )

    1991-04-01

    Reliability centered maintenance (RCM) is an approach to preventive maintenance planning and evaluation that has been used successfully by other industries, most notably the airlines and military. Now EPRI is demonstrating RCM in the commercial nuclear power industry. Just completed are large-scale, two-year demonstrations at Rochester Gas Electric (Ginna Nuclear Power Station) and Southern California Edison (San Onofre Nuclear Generating Station). Both demonstrations were begun in the spring of 1988. At each plant, RCM was performed on 12 to 21 major systems. Both demonstrations determined that RCM is an appropriate means to optimize a PM program and improve nuclear plant preventive maintenance on a large scale. Such favorable results had been suggested by three earlier EPRI pilot studies at Florida Power Light, Duke Power, and Southern California Edison. EPRI selected the Ginna and San Onofre sites because, together, they represent a broad range of utility and plant size, plant organization, plant age, and histories of availability and reliability. Significant steps in each demonstration included: selecting and prioritizing plant systems for RCM evaluation; performing the RCM evaluation steps on selected systems; evaluating the RCM recommendations by a multi-disciplinary task force; implementing the RCM recommendations; establishing a system to track and verify the RCM benefits; and establishing procedures to update the RCM bases and recommendations with time (a living program). 7 refs., 1 tab.

  20. 14 CFR 145.217 - Contract maintenance.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 3 2014-01-01 2014-01-01 false Contract maintenance. 145.217 Section 145...) SCHOOLS AND OTHER CERTIFICATED AGENCIES REPAIR STATIONS Operating Rules § 145.217 Contract maintenance. (a) A certificated repair station may contract a maintenance function pertaining to an article to...

  1. 40 CFR 610.52 - Maintenance.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 31 2012-07-01 2012-07-01 false Maintenance. 610.52 Section 610.52 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) ENERGY POLICY FUEL ECONOMY RETROFIT DEVICES Test Procedures and Evaluation Criteria Durability Test Procedures § 610.52 Maintenance. (a) Maintenance during the durability...

  2. 49 CFR 260.39 - Maintenance standards.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 4 2013-10-01 2013-10-01 false Maintenance standards. 260.39 Section 260.39... REHABILITATION AND IMPROVEMENT FINANCING PROGRAM Standards for Maintenance of Facilities Involved in the Project § 260.39 Maintenance standards. (a) When the proceeds of a direct loan or an obligation guaranteed...

  3. 49 CFR 260.39 - Maintenance standards.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 4 2014-10-01 2014-10-01 false Maintenance standards. 260.39 Section 260.39... REHABILITATION AND IMPROVEMENT FINANCING PROGRAM Standards for Maintenance of Facilities Involved in the Project § 260.39 Maintenance standards. (a) When the proceeds of a direct loan or an obligation guaranteed...

  4. 14 CFR 145.217 - Contract maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Contract maintenance. 145.217 Section 145...) SCHOOLS AND OTHER CERTIFICATED AGENCIES REPAIR STATIONS Operating Rules § 145.217 Contract maintenance. (a) A certificated repair station may contract a maintenance function pertaining to an article to...

  5. 33 CFR 127.401 - Maintenance: General.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Maintenance: General. 127.401 Section 127.401 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED... Waterfront Facilities Handling Liquefied Natural Gas Maintenance § 127.401 Maintenance: General. The...

  6. 49 CFR 192.749 - Vault maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Vault maintenance. 192.749 Section 192.749 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY... BY PIPELINE: MINIMUM FEDERAL SAFETY STANDARDS Maintenance § 192.749 Vault maintenance. (a) Each...

  7. 49 CFR 195.420 - Valve maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Valve maintenance. 195.420 Section 195.420 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY... PIPELINE Operation and Maintenance § 195.420 Valve maintenance. (a) Each operator shall maintain each...

  8. 30 CFR 57.5066 - Maintenance standards.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Maintenance standards. 57.5066 Section 57.5066... Maintenance standards. (a) Any diesel powered equipment operated at any time in underground areas must meet the following maintenance standards: (1) The operator must maintain any approved engine in...

  9. 23 CFR 1.27 - Maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Maintenance. 1.27 Section 1.27 Highways FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION GENERAL MANAGEMENT AND ADMINISTRATION GENERAL § 1.27 Maintenance... maintenance of projects shall be carried out in accordance with policies and procedures issued by...

  10. 49 CFR 37.203 - Lift maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 1 2010-10-01 2010-10-01 false Lift maintenance. 37.203 Section 37.203... DISABILITIES (ADA) Over-the-Road Buses (OTRBs) § 37.203 Lift maintenance. (a) The entity shall establish a system of regular and frequent maintenance checks of lifts sufficient to determine if they are...

  11. 47 CFR 87.69 - Maintenance tests.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Maintenance tests. 87.69 Section 87.69... Operating Requirements and Procedures Operating Requirements § 87.69 Maintenance tests. The licensee may make routine maintenance tests on equipment other than emergency locator transmitters if there is...

  12. 47 CFR 80.96 - Maintenance tests.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Maintenance tests. 80.96 Section 80.96... MARITIME SERVICES Operating Requirements and Procedures Operating Procedures-General § 80.96 Maintenance tests. Stations are authorized to engage in test transmissions necessary for maintenance of the...

  13. 49 CFR 260.39 - Maintenance standards.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Maintenance standards. 260.39 Section 260.39... REHABILITATION AND IMPROVEMENT FINANCING PROGRAM Standards for Maintenance of Facilities Involved in the Project § 260.39 Maintenance standards. (a) When the proceeds of a direct loan or an obligation guaranteed...

  14. 40 CFR 86.001-25 - Maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 18 2010-07-01 2010-07-01 false Maintenance. 86.001-25 Section 86.001...-Fueled and Methanol-Fueled Heavy-Duty Vehicles § 86.001-25 Maintenance. Section 86.001-25 includes text... engines. (2) Maintenance performed on vehicles, engines, subsystems, or components used to...

  15. 41 CFR 101-39.303 - Maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 41 Public Contracts and Property Management 2 2010-07-01 2010-07-01 true Maintenance. 101-39.303... Maintenance. In order to ensure uninterrupted operation of GSA Interagency Fleet Management System (IFMS) vehicles, safety and preventive maintenance inspections will be performed at regularly scheduled...

  16. 5 CFR 850.302 - Record maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 2 2010-01-01 2010-01-01 false Record maintenance. 850.302 Section 850... (CONTINUED) RETIREMENT SYSTEMS MODERNIZATION Records § 850.302 Record maintenance. (a) The retirement and..., for the initiation and maintenance of records, evidence, or other information described in this...

  17. 40 CFR 63.1655 - Maintenance requirements.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 12 2010-07-01 2010-07-01 true Maintenance requirements. 63.1655....1655 Maintenance requirements. (a) The owner or operator of an affected source must comply with the... maintenance plan for each air pollution control device associated with submerged arc furnaces, metal...

  18. Maintenance Staffing Guidelines For Educational Facilities.

    ERIC Educational Resources Information Center

    APPA: Association of Higher Education Facilities Officers, Alexandria, VA.

    The purpose of this publication is to provide a resource or guide for educational facilities in establishing or developing a maintenance trades organization that is sufficient to accomplish basic facilities maintenance functions. The guidelines are intended to suggest staffing levels for those routine facilities maintenance activities that are…

  19. 49 CFR 195.420 - Valve maintenance.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 3 2012-10-01 2012-10-01 false Valve maintenance. 195.420 Section 195.420... PIPELINE Operation and Maintenance § 195.420 Valve maintenance. (a) Each operator shall maintain each valve..., inspect each mainline valve to determine that it is functioning properly. (c) Each operator shall...

  20. 49 CFR 195.420 - Valve maintenance.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 3 2014-10-01 2014-10-01 false Valve maintenance. 195.420 Section 195.420... PIPELINE Operation and Maintenance § 195.420 Valve maintenance. (a) Each operator shall maintain each valve..., inspect each mainline valve to determine that it is functioning properly. (c) Each operator shall...

  1. 49 CFR 195.420 - Valve maintenance.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 3 2013-10-01 2013-10-01 false Valve maintenance. 195.420 Section 195.420... PIPELINE Operation and Maintenance § 195.420 Valve maintenance. (a) Each operator shall maintain each valve..., inspect each mainline valve to determine that it is functioning properly. (c) Each operator shall...

  2. 49 CFR 195.420 - Valve maintenance.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 3 2011-10-01 2011-10-01 false Valve maintenance. 195.420 Section 195.420... PIPELINE Operation and Maintenance § 195.420 Valve maintenance. (a) Each operator shall maintain each valve..., inspect each mainline valve to determine that it is functioning properly. (c) Each operator shall...

  3. 47 CFR 87.69 - Maintenance tests.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Maintenance tests. 87.69 Section 87.69... Operating Requirements and Procedures Operating Requirements § 87.69 Maintenance tests. The licensee may make routine maintenance tests on equipment other than emergency locator transmitters if there is...

  4. Laboratory services series: a programmed maintenance system

    SciTech Connect

    Tuxbury, D.C.; Srite, B.E.

    1980-01-01

    The diverse facilities, operations and equipment at a major national research and development laboratory require a systematic, analytical approach to operating equipment maintenance. A computer-scheduled preventive maintenance program is described including program development, equipment identification, maintenance and inspection instructions, scheduling, personnel, and equipment history.

  5. 40 CFR 610.52 - Maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) ENERGY POLICY FUEL ECONOMY RETROFIT... scheduled vehicle maintenance is the periodic service specified in the original owner's manual supplied to... maintenance, the Administrator may decide that before and after maintenance fuel economy tests are...

  6. Computerizing Maintenance Management Improves School Processes.

    ERIC Educational Resources Information Center

    Conroy, Pat

    2002-01-01

    Describes how a Computerized Maintenance Management System (CMMS), a centralized maintenance operations database that facilitates work order procedures and staff directives, can help individual school campuses and school districts to manage maintenance. Presents the benefits of CMMS and things to consider in CMMS selection. (EV)

  7. 23 CFR 633.208 - Maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Maintenance. 633.208 Section 633.208 Highways FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION ENGINEERING AND TRAFFIC OPERATIONS REQUIRED CONTRACT PROVISIONS Federal-Aid Contracts (Appalachian Contracts) § 633.208 Maintenance. Maintenance of all...

  8. 23 CFR 633.208 - Maintenance.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 23 Highways 1 2013-04-01 2013-04-01 false Maintenance. 633.208 Section 633.208 Highways FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION ENGINEERING AND TRAFFIC OPERATIONS REQUIRED CONTRACT PROVISIONS Federal-Aid Contracts (Appalachian Contracts) § 633.208 Maintenance. Maintenance of all...

  9. 23 CFR 633.208 - Maintenance.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 23 Highways 1 2014-04-01 2014-04-01 false Maintenance. 633.208 Section 633.208 Highways FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION ENGINEERING AND TRAFFIC OPERATIONS REQUIRED CONTRACT PROVISIONS Federal-Aid Contracts (Appalachian Contracts) § 633.208 Maintenance. Maintenance of all...

  10. 23 CFR 633.208 - Maintenance.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 23 Highways 1 2011-04-01 2011-04-01 false Maintenance. 633.208 Section 633.208 Highways FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION ENGINEERING AND TRAFFIC OPERATIONS REQUIRED CONTRACT PROVISIONS Federal-Aid Contracts (Appalachian Contracts) § 633.208 Maintenance. Maintenance of all...

  11. 23 CFR 633.208 - Maintenance.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 23 Highways 1 2012-04-01 2012-04-01 false Maintenance. 633.208 Section 633.208 Highways FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION ENGINEERING AND TRAFFIC OPERATIONS REQUIRED CONTRACT PROVISIONS Federal-Aid Contracts (Appalachian Contracts) § 633.208 Maintenance. Maintenance of all...

  12. High resolution telescope

    DOEpatents

    Massie, Norbert A.; Oster, Yale

    1992-01-01

    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.

  13. High resolution telescope

    SciTech Connect

    Massie, N.A.; Oster, Y.

    1990-01-01

    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 2.1m in a circle-of-nine configuration. The telescope array has an effective aperture of 12m 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 activities. The cost of the telescope scales with the first power of the aperture rather than its third power as in conventional telescopes. 9 figs., 1 tab.

  14. High resolution telescope

    SciTech Connect

    Massie, N.A.; Oster, Y.

    1990-12-31

    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 2.1m in a circle-of-nine configuration. The telescope array has an effective aperture of 12m 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 activities. The cost of the telescope scales with the first power of the aperture rather than its third power as in conventional telescopes. 9 figs., 1 tab.

  15. Analysis of Maintenance Service Contracts for Dump Trucks Used in Mining Industry with Simulation Approach

    NASA Astrophysics Data System (ADS)

    Dymasius, A.; Wangsaputra, R.; Iskandar, B. P.

    2016-02-01

    A mining company needs high availability of dump trucks used to haul mining materials. As a result, an effective maintenance action is required to keep the dump trucks in a good condition and hence reducing failure and downtime of the dump trucks. To carry out maintenance in-house requires a high intensive maintenance facility and high skilled maintenance specialists. Often, outsourcing maintenance is an economic option for the company. An external agent takes a proactive action with offering some maintenance contract options to the owner. The decision problem for the owner is to decide the best option and for the agent is to determine the optimal price for each option offered. A non-cooperative game-theory is used to formulate the decision problems for the owner and the agent. We consider that failure pattern of each truck follows a non-homogeneous Poisson process (NHPP) and a queueing theory with multiple servers is used to estimate the downtime. As it involves high complexity to model downtime using a queueing theory, then in this paper we use a simulation method. Furthermore, we conduct experiment to seek for the best number of maintenance facilities (servers) which minimises maintenance and penalty costs incurred to the agent.

  16. On the application of copula in modeling maintenance contract

    NASA Astrophysics Data System (ADS)

    Iskandar, B. P.; Husniah, H.

    2016-02-01

    This paper deals with the application of copula in maintenance contracts for a nonrepayable item. Failures of the item are modeled using a two dimensional approach where age and usage of the item and this requires a bi-variate distribution to modelling failures. When the item fails then corrective maintenance (CM) is minimally repaired. CM can be outsourced to an external agent or done in house. The decision problem for the owner is to find the maximum total profit whilst for the agent is to determine the optimal price of the contract. We obtain the mathematical models of the decision problems for the owner as well as the agent using a Nash game theory formulation.

  17. Childbirth Problems

    MedlinePlus

    ... labor starts before 37 completed weeks of pregnancy Problems with the umbilical cord Problems with the position of the baby, such as ... feet first Birth injuries For some of these problems, the baby may need to be delivered surgically ...

  18. Balance Problems

    MedlinePlus

    ... version of this page please turn Javascript on. Balance Problems About Balance Problems Have you ever felt dizzy, lightheaded, or ... dizziness problem during the past year. Why Good Balance is Important Having good balance means being able ...

  19. 14 CFR 145.205 - Maintenance, preventive maintenance, and alterations performed for certificate holders under...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... sections of its maintenance manual. (b) A certificated repair station that performs inspections for a...) SCHOOLS AND OTHER CERTIFICATED AGENCIES REPAIR STATIONS Operating Rules § 145.205 Maintenance, preventive.... (a) A certificated repair station that performs maintenance, preventive maintenance, or...

  20. 14 CFR 145.205 - Maintenance, preventive maintenance, and alterations performed for certificate holders under...

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... sections of its maintenance manual. (b) A certificated repair station that performs inspections for a...) SCHOOLS AND OTHER CERTIFICATED AGENCIES REPAIR STATIONS Operating Rules § 145.205 Maintenance, preventive.... (a) A certificated repair station that performs maintenance, preventive maintenance, or...

  1. 14 CFR 121.379 - Authority to perform and approve maintenance, preventive maintenance, and alterations.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... its continuous airworthiness maintenance program and its maintenance manual. In addition, a... airworthiness maintenance program and maintenance manual of the other certificate holder. (b) A certificate... section. However, in the case of a major repair or major alteration, the work must have been done...

  2. 14 CFR 121.379 - Authority to perform and approve maintenance, preventive maintenance, and alterations.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... its continuous airworthiness maintenance program and its maintenance manual. In addition, a... airworthiness maintenance program and maintenance manual of the other certificate holder. (b) A certificate... section. However, in the case of a major repair or major alteration, the work must have been done...

  3. 14 CFR 145.205 - Maintenance, preventive maintenance, and alterations performed for certificate holders under...

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... sections of its maintenance manual. (b) A certificated repair station that performs inspections for a...) SCHOOLS AND OTHER CERTIFICATED AGENCIES REPAIR STATIONS Operating Rules § 145.205 Maintenance, preventive.... (a) A certificated repair station that performs maintenance, preventive maintenance, or...

  4. 14 CFR 145.205 - Maintenance, preventive maintenance, and alterations performed for certificate holders under...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... sections of its maintenance manual. (b) A certificated repair station that performs inspections for a...) SCHOOLS AND OTHER CERTIFICATED AGENCIES REPAIR STATIONS Operating Rules § 145.205 Maintenance, preventive.... (a) A certificated repair station that performs maintenance, preventive maintenance, or...

  5. 14 CFR 145.205 - Maintenance, preventive maintenance, and alterations performed for certificate holders under...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... sections of its maintenance manual. (b) A certificated repair station that performs inspections for a...) SCHOOLS AND OTHER CERTIFICATED AGENCIES REPAIR STATIONS Operating Rules § 145.205 Maintenance, preventive.... (a) A certificated repair station that performs maintenance, preventive maintenance, or...

  6. Themes from a Camp Maintenance Network: Camp Maintenance and Property Personnel Share Their Insights and Challenges.

    ERIC Educational Resources Information Center

    Whyman, Wynne

    2003-01-01

    A camp maintenance survey was completed by maintenance personnel from 99 camps. Results highlighted several important considerations: ensuring sufficient maintenance funds for aging infrastructure, including camp/property personnel in decision making, publicizing completed maintenance projects, examining long-term needs of the land, and adopting…

  7. 14 CFR 91.1433 - CAMP: Maintenance and preventive maintenance training program.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false CAMP: Maintenance and preventive... RULES Fractional Ownership Operations Program Management § 91.1433 CAMP: Maintenance and preventive... performing maintenance or preventive maintenance functions for it must have a training program to ensure...

  8. 14 CFR 43.3 - Persons authorized to perform maintenance, preventive maintenance, rebuilding, and alterations.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Persons authorized to perform maintenance, preventive maintenance, rebuilding, and alterations. 43.3 Section 43.3 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT MAINTENANCE, PREVENTIVE MAINTENANCE, REBUILDING, AND ALTERATION § 43.3...

  9. A novel super-resolution camera model

    NASA Astrophysics Data System (ADS)

    Shao, Xiaopeng; Wang, Yi; Xu, Jie; Wang, Lin; Liu, Fei; Luo, Qiuhua; Chen, Xiaodong; Bi, Xiangli

    2015-05-01

    Aiming to realize super resolution(SR) to single image and video reconstruction, a super resolution camera model is proposed for the problem that the resolution of the images obtained by traditional cameras behave comparatively low. To achieve this function we put a certain driving device such as piezoelectric ceramics in the camera. By controlling the driving device, a set of continuous low resolution(LR) images can be obtained and stored instantaneity, which reflect the randomness of the displacements and the real-time performance of the storage very well. The low resolution image sequences have different redundant information and some particular priori information, thus it is possible to restore super resolution image factually and effectively. The sample method is used to derive the reconstruction principle of super resolution, which analyzes the possible improvement degree of the resolution in theory. The super resolution algorithm based on learning is used to reconstruct single image and the variational Bayesian algorithm is simulated to reconstruct the low resolution images with random displacements, which models the unknown high resolution image, motion parameters and unknown model parameters in one hierarchical Bayesian framework. Utilizing sub-pixel registration method, a super resolution image of the scene can be reconstructed. The results of 16 images reconstruction show that this camera model can increase the image resolution to 2 times, obtaining images with higher resolution in currently available hardware levels.

  10. Geothermal Well Maintenance and Repair in Cerro Prieto

    SciTech Connect

    Aguirre, B. D.; Blanco, F. V.

    1981-01-01

    When the first well is drilled at a geothermal field, procedures for the cleaning, repair, and control of wells should be established. This aspect will be increasingly important as more wells are drilled. Equipment, tools and techniques need to be improved to achieve economic and safe results. Different systems have been developed and applied in maintenance of wells, in problems of casing incrustations, repairs, plugging, and well control. These systems should be improved, even though they have been reasonably satisfactory to date.

  11. Optimization of nuclear plant preventive maintenance

    SciTech Connect

    McClymonds, S.L.; Winge, D.E.

    1987-01-01

    It is generally accepted that preventive maintenance can achieve greater equipment reliability. Most would also agree that the taking of precautions and checking reduces the need to perform corrective maintenance. In the nuclear industry, however, preventive maintenance has not been completely successful in sustaining equipment reliability levels. This paper presents methods for developing an optimum preventive maintenance program for nuclear power plants, one which will contribute to high plant availability by concentrating resources on those maintenance tasks that are directly applicable to equipment reliability.

  12. Reconcile: A Coreference Resolution Research Platform

    SciTech Connect

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

    2009-10-29

    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.

  13. Multivariate curve resolution in liquid chromatography

    SciTech Connect

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

    1983-12-01

    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.

  14. Fanconi anemia proteins in telomere maintenance.

    PubMed

    Sarkar, Jaya; Liu, Yie

    2016-07-01

    Mammalian chromosome ends are protected by nucleoprotein structures called telomeres. Telomeres ensure genome stability by preventing chromosome termini from being recognized as DNA damage. Telomere length homeostasis is inevitable for telomere maintenance because critical shortening or over-lengthening of telomeres may lead to DNA damage response or delay in DNA replication, and hence genome instability. Due to their repetitive DNA sequence, unique architecture, bound shelterin proteins, and high propensity to form alternate/secondary DNA structures, telomeres are like common fragile sites and pose an inherent challenge to the progression of DNA replication, repair, and recombination apparatus. It is conceivable that longer the telomeres are, greater is the severity of such challenges. Recent studies have linked excessively long telomeres with increased tumorigenesis. Here we discuss telomere abnormalities in a rare recessive chromosomal instability disorder called Fanconi Anemia and the role of the Fanconi Anemia pathway in telomere biology. Reports suggest that Fanconi Anemia proteins play a role in maintaining long telomeres, including processing telomeric joint molecule intermediates. We speculate that ablation of the Fanconi Anemia pathway would lead to inadequate aberrant structural barrier resolution at excessively long telomeres, thereby causing replicative burden on the cell. PMID:27118469

  15. Pacific Northwest Laboratory Maintenance Implementation plan

    SciTech Connect

    Bright, J.D.

    1992-06-01

    This Maintenance Implementation plan has been developed for Pacific Northwest Laboratory`s (PNL) Nuclear Facilities: 306W, 324, 325, 327 and 329NMF. It is based on a graded approach, self-assessment of the existing maintenance program(s) per the requirements specified by US Department of Energy (DOE) Order 4330.4A, Chapter II, Change {number_sign}3. The results of this assessment were evaluated to determine needed improvements in PNL Craft Services` current maintenance program. The objective of this implementation plan is to provide baseline information for compliance to the DOE 4330.4A, and for needed improvements. The prime consideration in applying a graded approach to the Order has been to maintain safe and reliable operations, environmental compliance, safeguards and security, programmatic mission, facility preservation, and/or other facility-specific requirements. Using the results of the self-assessment, PNL has selected nine of the 18 elements of the Maintenance Program defined by DOE Order 4330.4A for improvement. The elements selected for improvement are Training and Qualification of Maintenance Personnel; Maintenance Procedures; Planning, Scheduling, and Coordination of Maintenance; Control of Maintenance Activities; Post-Maintenance Testing; Facility Condition Inspection; Management Involvement; Maintenance History; and Additional Maintenance Requirements. Based upon 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.

  16. Pacific Northwest Laboratory Maintenance Implementation plan

    SciTech Connect

    Bright, J.D.

    1992-06-01

    This Maintenance Implementation plan has been developed for Pacific Northwest Laboratory's (PNL) Nuclear Facilities: 306W, 324, 325, 327 and 329NMF. It is based on a graded approach, self-assessment of the existing maintenance program(s) per the requirements specified by US Department of Energy (DOE) Order 4330.4A, Chapter II, Change {number sign}3. The results of this assessment were evaluated to determine needed improvements in PNL Craft Services' current maintenance program. The objective of this implementation plan is to provide baseline information for compliance to the DOE 4330.4A, and for needed improvements. The prime consideration in applying a graded approach to the Order has been to maintain safe and reliable operations, environmental compliance, safeguards and security, programmatic mission, facility preservation, and/or other facility-specific requirements. Using the results of the self-assessment, PNL has selected nine of the 18 elements of the Maintenance Program defined by DOE Order 4330.4A for improvement. The elements selected for improvement are Training and Qualification of Maintenance Personnel; Maintenance Procedures; Planning, Scheduling, and Coordination of Maintenance; Control of Maintenance Activities; Post-Maintenance Testing; Facility Condition Inspection; Management Involvement; Maintenance History; and Additional Maintenance Requirements. Based upon 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.

  17. Resolution analysis by random probing

    NASA Astrophysics Data System (ADS)

    Simutė, S.; Fichtner, A.; van Leeuwen, T.

    2015-12-01

    We develop and apply methods for resolution analysis in tomography, based on stochastic probing of the Hessian or resolution operators. Key properties of our methods are (i) low algorithmic complexity and easy implementation, (ii) applicability to any tomographic technique, including full-waveform inversion and linearized ray tomography, (iii) applicability in any spatial dimension and to inversions with a large number of model parameters, (iv) low computational costs that are mostly a fraction of those required for synthetic recovery tests, and (v) the ability to quantify both spatial resolution and inter-parameter trade-offs. Using synthetic full-waveform inversions as benchmarks, we demonstrate that auto-correlations of random-model applications to the Hessian yield various resolution measures, including direction- and position-dependent resolution lengths, and the strength of inter-parameter mappings. We observe that the required number of random test models is around 5 in one, two and three dimensions. This means that the proposed resolution analyses are not only more meaningful than recovery tests but also computationally less expensive. We demonstrate the applicability of our method in 3D real-data full-waveform inversions for the western Mediterranean and Japan. In addition to tomographic problems, resolution analysis by random probing may be used in other inverse methods that constrain continuously distributed properties, including electromagnetic and potential-field inversions, as well as recently emerging geodynamic data assimilation.

  18. Resolution analysis by random probing

    NASA Astrophysics Data System (ADS)

    Fichtner, Andreas; Leeuwen, Tristan van

    2015-08-01

    We develop and apply methods for resolution analysis in tomography, based on stochastic probing of the Hessian or resolution operators. Key properties of our methods are (i) low algorithmic complexity and easy implementation, (ii) applicability to any tomographic technique, including full-waveform inversion and linearized ray tomography, (iii) applicability in any spatial dimension and to inversions with a large number of model parameters, (iv) low computational costs that are mostly a fraction of those required for synthetic recovery tests, and (v) the ability to quantify both spatial resolution and interparameter trade-offs. Using synthetic full-waveform inversions as benchmarks, we demonstrate that autocorrelations of random-model applications to the Hessian yield various resolution measures, including direction- and position-dependent resolution lengths and the strength of interparameter mappings. We observe that the required number of random test models is around five in one, two, and three dimensions. This means that the proposed resolution analyses are not only more meaningful than recovery tests but also computationally less expensive. We demonstrate the applicability of our method in a 3-D real-data full-waveform inversion for the western Mediterranean. In addition to tomographic problems, resolution analysis by random probing may be used in other inverse methods that constrain continuously distributed properties, including electromagnetic and potential-field inversions, as well as recently emerging geodynamic data assimilation.

  19. [Maintenance care for dental implant].

    PubMed

    Kamoi, K

    1989-10-01

    Dental implant has tried at the early stage in 19th century recovering an oral function and esthetics. Technological revolutions in biochemical and new materials have developed on the remarkable change in the dental implants, nowadays we call the three generation therapy for dental implantology. There are many kinds of methods and techniques in dental implants, however a lot of troublesome complication on the process of surgical phase, construction of prothodontics and prognosis of maintenance care. In the proceedings of this symposium, I would like to propose you how to manage the maintenance care for various kind of dental implants through the methodology and case presentations. Tendenay and future for dental implants The current outlook of dental implant has increasing supply and demand not only dentists but also patients. According to Japanese Welfare Ministry's report in 1987, average missing teeth over sixty years old generations are approximately 42% in accordance with NIDR (U.S.A.) research. They are missed on ten over teeth in full 28th teeth dentitions owing to dental caries and periodontal diseases. Generally speaking, latent implant patients are occupied on the same possibility of needs for dental implants both Japan and U.S.A. Management of maintenance care The patients hardly recognized the importance of plaque control for the maintenance care in the intraoral condition after implantation. Dentists and dental staffs must be instruct patients for importance of plaque removal and control, because they already had forgotten the habit of teeth cleaning, especially in the edenturous conditions. 1) Concept of establishment in oral hygiene. Motivation and instruction for patients include very important factors in dental implants as well as in periodontal diseases. Patients who could not achieve on good oral hygiene levels obtained no good results in the long term observations. To establish good oral hygiene are how to control supra plaque surrounding tissues

  20. No maintenance -- no energy efficiency

    SciTech Connect

    Szydlowski, R.F.; Schliesing, J.S.; Winiarski, D.W.

    1994-12-01

    Field investigations illustrate that it is not realistic to expect new high-tech equipment to function for a full life expectancy at high efficiency without significant operations and maintenance (O&M). A simple walk through inspection of most buildings reveals extensive equipment that is being operated on manual override, is incorrectly adjusted and operating inefficiently, or is simply inoperative. This point is illustrated with two examples at Robins Air Force Base, Georgia. The first describes development of a comprehensive, base-wide, steam trap maintenance program. The second describes a measured evaluation from a typical office building. The objective of both examples was to assess the importance of proper O&M. The proposed ``O&M First`` philosophy will result in more efficient building HVAC operation, provide improved services to the building occupants, and reduce energy consumption and unscheduled equipment repair/replacement. Implementation of a comprehensive O&M program will result in a 15--25% energy savings. The O&M foundation that is established will allow other energy conservation activities such is demand side management or energy management and control systems, to achieve and maintain their expected energy savings.

  1. Maintenance dialysis in developing countries.

    PubMed

    Sinha, Aditi; Bagga, Arvind

    2015-02-01

    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

  2. Implant Maintenance: A Clinical Update

    PubMed Central

    Gulati, Minkle; Govila, Vivek; Anand, Vishal; Anand, Bhargavi

    2014-01-01

    Introduction. The differences in the supporting structure of the implant make them more susceptible to inflammation and bone loss when plaque accumulates as compared to the teeth. Therefore, a comprehensive maintenance protocol should be followed to ensure the longevity of the implant. Material and Method. A research to provide scientific evidence supporting the feasibility of various implant care methods was carried out using various online resources to retrieve relevant studies published since 1985. Results. The electronic search yielded 708 titles, out of which a total of 42 articles were considered appropriate and finally included for the preparation of this review article. Discussion. A typical maintenance visit for patients with dental implants should last 1 hour and should be scheduled every 3 months to evaluate any changes in their oral and general history. It is essential to have a proper instrument selection to prevent damage to the implant surface and trauma to the peri-implant tissues. Conclusion. As the number of patients opting for dental implants is increasing, it becomes increasingly essential to know the differences between natural teeth and implant care and accept the challenges of maintaining these restorations. PMID:27437506

  3. Crafting Elegant Solutions: Strategies for Conflict Resolution.

    ERIC Educational Resources Information Center

    Koch, Susan J.; Decker, Robert H.

    1993-01-01

    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)

  4. Index : A Rule Based Expert System For Computer Network Maintenance

    NASA Astrophysics Data System (ADS)

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

    1988-03-01

    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.

  5. Maintenance of Certification®, Maintenance of Public Trust

    PubMed Central

    Chung, Kevin C.; Clapham, Philip J.; Lalonde, Donald H.

    2010-01-01

    The Maintenance of Certification® (MOC) program has been well received by many physicians, but faced significant opposition from others, who complain that it is overly tedious, costly, and irrelevant to their practice. This article offers a consolidated and concise history of the MOC program and a summary of what plastic surgeons need to know to successfully complete the American Board of Plastic Surgery’s (ABPS) own MOC requirements. The authors have justified each step of the ABPS’s MOC process in terms of how it improves the quality of care delivered to Plastic Surgery patients. Finally, a summary of research is presented that demonstrates both that the public supports the MOC process for all physicians and that continuing education and formal assessment and improvement initiatives have been linked in multiple studies to a better and more evidence-based medical practice. PMID:21285803

  6. [Hospital integrated maintenance management system design and application].

    PubMed

    Zeng, Li

    2011-03-01

    According to hospital medical equipment, information equipment and water, electricity and other equipment maintenance procedures, this paper planned and developed a comprehensive maintenance management system for hospitals. The system implements equipment maintenance, maintenance applications, maintenance registration, preventive maintenance, data quantitative analysis and other functions. PMID:21706796

  7. 49 CFR 214.503 - Good-faith challenges; procedures for notification and resolution.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Roadway Maintenance Machines and Hi-Rail Vehicles § 214.503 Good-faith challenges; procedures for notification and resolution. (a) An employee operating an on-track roadway maintenance machine or hi-rail vehicle shall inform the employer whenever the employee makes a good-faith determination that the...

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

    NASA Technical Reports Server (NTRS)

    Brown, Aaron J.

    2011-01-01

    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.

  9. Second Line of Defense: Electronic Maintenance Reports, Local Maintenance Provider User Guide, Rev. 3

    SciTech Connect

    Leigh, Richard J.

    2012-09-01

    The Electronic Maintenance Report forms allow Local Maintenance Providers (LMP) and other program staff to enter maintenance information into a simple and secure system. This document describes the features and information required to complete the Maintenance Report forms. It is expected that all Corrective Maintenance Reports from LMPs will be submitted electronically into the SLD Portal. As an exception (e.g., when access to the SLD Portal is unavailable), Maintenance Reports can be submitted via a secure Adobe PDF form available through the Sustainability Manager assigned to each country.

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

    PubMed Central

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

    2014-01-01

    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

  11. Initial flight qualification and operational maintenance of X-29A flight software

    NASA Technical Reports Server (NTRS)

    Earls, Michael R.; Sitz, Joel R.

    1989-01-01

    A discussion is presented of some significant aspects of the initial flight qualification and operational maintenance of the flight control system softward for the X-29A technology demonstrator. Flight qualification and maintenance of complex, embedded flight control system software poses unique problems. The X-29A technology demonstrator aircraft has a digital flight control system which incorporates functions generally considered too complex for analog systems. Organizational responsibilities, software assurance issues, tools, and facilities are discussed.

  12. Resolution in Electromagnetic Prospecting

    NASA Astrophysics Data System (ADS)

    Aldridge, D. F.; Bartel, L. C.; Knox, H. A.; Schramm, K. A.

    2014-12-01

    Low-frequency electromagnetic (EM) signals are commonly used in geophysical exploration of the shallow subsurface. Sensitivity to conductivity implies they are particularly useful for inferring fluid content of porous media. However, low-frequency EM wavefields are diffusive, and have significantly larger wavelengths compared to seismic signals of equal frequency. The wavelength of a 30 Hz sinusoid propagating with seismic velocity 3000 m/s is 100 m, whereas an analogous EM signal diffusing through a conductive body of 0.1 S/m (clayey shale) has wavelength 1825 m. The larger wavelength has implications for resolution of the EM prospecting method. We are investigating resolving power of the EM method via theoretical and numerical experiments. Normal incidence plane wave reflection/transmission by a thin geologic bed is amenable to analytic solution. Responses are calculated for beds that are conductive or resistive relative to the host rock. Preliminary results indicate the classic seismic resolution/detection limit of bed thickness ~1/8 wavelength is not achieved. EM responses for point or line current sources recorded by general acquisition geometries are calculated with a 3D finite-difference algorithm. These exhibit greater variability which may allow inference of bed thickness. We also examine composite responses of two point scatterers with separation when illuminated by an incident EM field. This is analogous to the Rayleigh resolution problem of estimating angular separation between two light sources. The First Born Approximation implies that perturbations in permittivity, permeability, and conductivity have different scattering patterns, which may be indicators of EM medium properties. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the US Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000.

  13. The High Resolution Hurricane Test

    NASA Astrophysics Data System (ADS)

    Tripoli, G. J.

    2009-09-01

    It has been suggested that an answer to the hurricane intensity forecast problem is to use very high cloud-resolving resolution in operational forecast models. In consideration of this hypothesis, the United States National Atmospheric and Oceanic Administration commissioned a major study to take place over the past 1.5 years whereby the hypothesis would be tested with 6 different hurricane models featuring different dynamics cores and different physics. These models included the GFDL hurricane, Navy COAMPS, the WRF-ARW, WRF-AHW, WRF-NMM, and the UW-NMS. The experiment design was to choose and optimal mix of historic hurricanes where good observations of intensity at land fall existed and run 5 day model forecasts with 3 different resolutions of about 9-12 km (low resolution), 3-4 km (medium resolution) and 1-1.5 km (high resolution) and document how much the forecast improved in each case. The project focused on 10 storms over 2-12, 1-5 day forecast periods, for a total of 67 simulations. Not all groups completed all 67 simulations, but there were sufficient results to reach a stunning conclusion. The results of these tests suggested that little or no improvement in intensity prediction was achieved with high resolution.

  14. Walking Problems

    MedlinePlus

    ... daily activities, get around, and exercise. Having a problem with walking can make daily life more difficult. ... walk is called your gait. A variety of problems can cause an abnormal gait and lead to ...

  15. Breathing Problems

    MedlinePlus

    ... re not getting enough air. Sometimes mild breathing problems are from a stuffy nose or hard exercise. ... emphysema or pneumonia cause breathing difficulties. So can problems with your trachea or bronchi, which are part ...

  16. Erection problems

    MedlinePlus

    ... cord injury In some cases, your emotions or relationship problems can lead to ED, such as: Poor ... you stressed, depressed, or anxious? Are you having relationship problems? You may have a number of different ...

  17. Joint Problems

    MedlinePlus

    ... ankles and toes. Other types of arthritis include gout or pseudogout. Sometimes, there is a mechanical problem ... for more information on osteoarthritis, rheumatoid arthritis and gout. How Common are Joint Problems? Osteoarthritis, which affects ...

  18. PFP MICON maintenance manual. Revision 1

    SciTech Connect

    Silvan, G.R.

    1995-01-25

    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.

  19. Estimating Maintenance Demands Of A Space Station

    NASA Technical Reports Server (NTRS)

    Bream, B. L.

    1995-01-01

    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.

  20. Reliability centered maintenance in astronomical infrastructure facilities

    NASA Astrophysics Data System (ADS)

    Ansorge, W. R.

    2006-06-01

    Hundreds of mirror segment, thousands of high precision actuators, highly complex mechanical, hydraulic, electrical and other technology subsystems, and highly sophisticated control systems: an ELT system consists of millions of individual parts and components, each of them may fail and lead to a partial or complete system breakdown. The traditional maintenance concepts characterized by predefined preventive maintenance activities and rigid schedules are not suitable for handling this large number of potential failures and malfunctions and the extreme maintenance workload. New maintenance strategies have to be found suitable to increase reliability while reducing the cost of needless maintenance services. The Reliability Centred Maintenance (RCM) methodology is already used extensively by airlines, and in industrial and marine facilities and even by scientific institutions like NASA. Its application increases the operational reliability while reducing the cost of unnecessary maintenance activities and is certainly also a solution for current and future ELT facilities. RCM is a concept of developing a maintenance scheme based on the reliability of the various components of a system by using "feedback loops between instrument / system performance monitoring and preventive/corrective maintenance cycles." Ideally RCM has to be designed within a system and should be located in the requirement definition, the preliminary and final design phases of new equipment and complicated systems. However, under certain conditions, an implementation of RCM into the maintenance management strategy of already existing astronomical infrastructure facilities is also possible. This presentation outlines the principles of the RCM methodology, explains the advantages, and highlights necessary changes in the observatory development, operation and maintenance philosophies. Presently, it is the right time to implement RCM into current and future ELT projects and to save up to 50% maintenance

  1. Improvement of aircraft maintenance methods

    NASA Astrophysics Data System (ADS)

    Vladimirov, N. I.

    The papers presented in this volume provide an overview of recent theoretical and experimental research aimed at improving the maintenance of aircraft, developing advanced diagnostic techniques, and increasing the efficiency and safety of flight operations. Topics discussed include design characteristics of the functional systems of aircraft and prediction of their technical condition, a probability analysis of a method for diagnosing gas turbine engines on the basis of thermogasdynamic parameters, characteristics of fatigue crack growth under the service-spectrum loading of the tail boom, and the accuracy of nonparametric reliability estimates under varying operation conditions. Papers are also presented on ways of reducing the aeration of hydraulic fluids in aircraft, evaluation of the efficiency of the pilot's control activity in a flight simulator, and using control charts for the analysis of the performance of aviation specialists. (For individual items see A93-18327 to A93-18351)

  2. Autonomous spacecraft maintenance study group

    NASA Technical Reports Server (NTRS)

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

    1981-01-01

    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.

  3. Simulated maintenance a virtual reality

    SciTech Connect

    Lirvall, P.

    1995-10-01

    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.

  4. 40 CFR 610.52 - Maintenance.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...) PCV Inspection. (iv) Dwell and timing check. (v) Charging circuit check. (3) Periodic maintenance... retrofit). (iii) Windshield wipers. (iv) Fluid levels unrelated to retrofit. (v) Brakes. (vi)...

  5. 40 CFR 610.52 - Maintenance.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...) PCV Inspection. (iv) Dwell and timing check. (v) Charging circuit check. (3) Periodic maintenance... retrofit). (iii) Windshield wipers. (iv) Fluid levels unrelated to retrofit. (v) Brakes. (vi)...

  6. 40 CFR 610.52 - Maintenance.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...) PCV Inspection. (iv) Dwell and timing check. (v) Charging circuit check. (3) Periodic maintenance... retrofit). (iii) Windshield wipers. (iv) Fluid levels unrelated to retrofit. (v) Brakes. (vi)...

  7. [Development of Hospital Equipment Maintenance Information System].

    PubMed

    Zhou, Zhixin

    2015-11-01

    Hospital equipment maintenance information system plays an important role in improving medical treatment quality and efficiency. By requirement analysis of hospital equipment maintenance, the system function diagram is drawed. According to analysis of input and output data, tables and reports in connection with equipment maintenance process, relationships between entity and attribute is found out, and E-R diagram is drawed and relational database table is established. Software development should meet actual process requirement of maintenance and have a friendly user interface and flexible operation. The software can analyze failure cause by statistical analysis. PMID:27066680

  8. Maintenance management at La Silla Paranal Observatory

    NASA Astrophysics Data System (ADS)

    Montano, Nelson

    2008-07-01

    From the beginning of the VLT project, the European Southern Observatory (ESO) considered the application of a competent maintenance strategy a fundamental aspect for future operations of the Paranal Observatory. For that purpose, a special maintenance philosophy was developed during the project stage and applied during the initial years of operations. The merging of the La Silla and Paranal Observatories in 2005 added a new managerial challenge to the regular operational requirements (high availability and reliability) which motivated ESO Management to develop a stronger strategy for the operations of the new merged Observatory. Part of the new strategy considered the creation of a dedicated department for the management of all maintenance activities, separating this support from the traditional scheme where the Engineering Department had the responsibility for the entire technical support to operations. In order to keep a competent level of maintenance operations for the new unified Observatory, the La Silla Paranal (LSP) Maintenance Department has been using a well known maintenance management model used in various industrial applications as a guide. Today the operations of the Maintenance Department are concentrated on developing and implementing practices regarding concepts such as Maintenance Tactics, Planning, Data Management, Performance Indicators and Material Management. In addition to that, advances related to Reliability Analysis been taken in order to reach a superior level of excellence. The results achieved by the LSP Maintenance Department are reflected in a reduced rate of functional failures, allowing uninterrupted operations of the Observation sites.

  9. Modularization and installation, maintenance, and repair aspects of GASP technology

    SciTech Connect

    Dick, P. )

    1992-03-01

    This paper reports that the Goodfellow Assocs. Susbsea Processing (GASP) project addressed most of the major problem posed by the development of remote, small, marginal, or satellite oil and natural gas fields in deep waters. It considered a number of field development scenarios and , in particular, reviewed cases for fields situated up to 30 km from a platform- or shore-based processing facility. During the design of the resultant modularized GASP system, it was determined that an inspection, maintenance, and repair (IMR) philosophy needed to be developed. The number of field development scenarios involved, the different module dimensions and weights, and the remote driverless activities required in deeper waters resulted in a separate project, Maintenance and Retrieval Equipment (MARE).

  10. Managing Highway Maintenance: Management Data and Maintenance Standards; Levels 1 & 2, For Training in Maintenance Standards and Crew Scheduling.

    ERIC Educational Resources Information Center

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

    Part of the series "Managing Highway Maintenance," the unit is designed for use with unit eight, level one, and unit 13, level two, and the certification tests for those units in the series. It contains typical management data and selected highway maintenance standards for the areas of: surface and shoulder; roadside and drainage; traffic…

  11. 75 FR 4099 - Maintenance Wage Rate Wage Recommendation and Maintenance Wage Survey; Report of Additional...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-26

    ... adopt prevailing wage rates for maintenance laborers and mechanics, and to approve or refer to the U.S... maintenance laborers and mechanics, and to approve or refer to the U.S. Department of Labor for approval,...

  12. Resolution in forensic microbial genotyping

    SciTech Connect

    Velsko, S P

    2005-08-30

    Resolution is a key parameter for differentiating among the large number of strain typing methods that could be applied to pathogens involved in bioterror events or biocrimes. In this report we develop a first-principles analysis of strain typing resolution using a simple mathematical model to provide a basis for the rational design of microbial typing systems for forensic applications. We derive two figures of merit that describe the resolving power and phylogenetic depth of a strain typing system. Rough estimates of these figures-of-merit for MLVA, MLST, IS element, AFLP, hybridization microarrays, and other bacterial typing methods are derived from mutation rate data reported in the literature. We also discuss the general problem of how to construct a ''universal'' practical typing system that has the highest possible resolution short of whole-genome sequencing, and that is applicable with minimal modification to a wide range of pathogens.

  13. KINOFORM LENSES - TOWARD NANOMETER RESOLUTION.

    SciTech Connect

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

    2004-10-23

    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.

  14. Technology and the future of medical equipment maintenance.

    PubMed

    Wear, J O

    1999-05-01

    Maintenance of medical equipment has been changing rapidly in the past few years. It is changing more rapidly in developed countries, but changes are also occurring in developing countries. Some of the changes may permit improved maintenance on the higher technology equipment in developing countries, since they do not require onsite expertise. Technology has had an increasing impact on the development of medical equipment with the increased use of microprocessors and computers. With miniaturization from space technology and electronic chip design, powerful microprocessors and computers have been built into medical equipment. The improvement in manufacturing technology has increased the quality of parts and therefore the medical equipment. This has resulted in increased mean time between failures and reduced maintenance needs. This has made equipment more reliable in remote areas and developing countries. The built-in computers and advances in software design have brought about self-diagnostics in medical equipment. The technicians now have a strong tool to be used in maintenance. One problem in this area is getting access to the self-diagnostics. Some manufacturers will not readily provide this access to the owner of the equipment. Advances in telecommunications in conjunction with self-diagnostics make available remote diagnosis and repair. Since components can no longer be repaired, a remote repair technician can instruct an operator or an on-site repairman on board replacement. In case of software problems, the remote repair technician may perform the repairs over the telephone. It is possible for the equipment to be monitored remotely by modern without interfering with the operation of the equipment. These changes in technology require the training of biomedical engineering technicians (BMETs) to change. They must have training in computers and telecommunications. Some of this training can be done with telecommunications and computers. PMID:10537671

  15. 14 CFR 43.3 - Persons authorized to perform maintenance, preventive maintenance, rebuilding, and alterations.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... major repair, or preventive maintenance, are listed in appendix A. (b) The holder of a mechanic... a mechanic or repairman certificate may perform the maintenance, preventive maintenance, and... pilot is authorized to perform; (3) There is no certificated mechanic available to perform...

  16. 14 CFR 135.433 - Maintenance and preventive maintenance training program.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... training program. 135.433 Section 135.433 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT... maintenance training program. Each certificate holder or a person performing maintenance or preventive maintenance functions for it shall have a training program to ensure that each person (including...

  17. 14 CFR 135.437 - Authority to perform and approve maintenance, preventive maintenance, and alterations.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ..., preventive maintenance, and alterations as provided in its maintenance manual. In addition, a certificate holder may perform these functions for another certificate holder as provided in the maintenance manual... alterations that are performed under paragraph (a) of this section. However, in the case of a major repair...

  18. 14 CFR 135.437 - Authority to perform and approve maintenance, preventive maintenance, and alterations.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ..., preventive maintenance, and alterations as provided in its maintenance manual. In addition, a certificate holder may perform these functions for another certificate holder as provided in the maintenance manual... alterations that are performed under paragraph (a) of this section. However, in the case of a major repair...

  19. Grounds Maintenance Equipment and Procedures. Building Maintenance. Module VI. Instructor's Guide.

    ERIC Educational Resources Information Center

    Crank, Virgil

    This curriculum guide, one of six modules keyed to the building maintenance competency profile developed by industry and education professionals, provides materials for two units on grounds maintenance equipment and procedures. The first unit deals with grounds maintenance equipment and includes the following lessons: safety; changing oil/filter…

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

    ERIC Educational Resources Information Center

    Dainton, Marianne

    2013-01-01

    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…

  1. 40 CFR 89.109 - Maintenance instructions and minimum allowable maintenance intervals.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... ultimate purchaser of each new nonroad engine subject to standards under this part written instructions for... manufacturer's maintenance instructions furnished to the ultimate purchaser of the engine under paragraph (a... engine, provided that no maintenance operation is deleted from the maintenance schedule after...

  2. 40 CFR 89.109 - Maintenance instructions and minimum allowable maintenance intervals.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... ultimate purchaser of each new nonroad engine subject to standards under this part written instructions for... manufacturer's maintenance instructions furnished to the ultimate purchaser of the engine under paragraph (a... engine, provided that no maintenance operation is deleted from the maintenance schedule after...

  3. 40 CFR 89.109 - Maintenance instructions and minimum allowable maintenance intervals.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... ultimate purchaser of each new nonroad engine subject to standards under this part written instructions for... manufacturer's maintenance instructions furnished to the ultimate purchaser of the engine under paragraph (a... engine, provided that no maintenance operation is deleted from the maintenance schedule after...

  4. 47 CFR 80.1074 - Radio maintenance personnel for at-sea maintenance.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Radio maintenance personnel for at-sea... AND SPECIAL RADIO SERVICES STATIONS IN THE MARITIME SERVICES Global Maritime Distress and Safety System (GMDSS) General Provisions § 80.1074 Radio maintenance personnel for at-sea maintenance. (a)...

  5. 47 CFR 80.1074 - Radio maintenance personnel for at-sea maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Radio maintenance personnel for at-sea... AND SPECIAL RADIO SERVICES STATIONS IN THE MARITIME SERVICES Global Maritime Distress and Safety System (GMDSS) General Provisions § 80.1074 Radio maintenance personnel for at-sea maintenance. (a)...

  6. 47 CFR 80.1074 - Radio maintenance personnel for at-sea maintenance.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Radio maintenance personnel for at-sea... AND SPECIAL RADIO SERVICES STATIONS IN THE MARITIME SERVICES Global Maritime Distress and Safety System (GMDSS) General Provisions § 80.1074 Radio maintenance personnel for at-sea maintenance. (a)...

  7. 47 CFR 80.1074 - Radio maintenance personnel for at-sea maintenance.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 5 2013-10-01 2013-10-01 false Radio maintenance personnel for at-sea... AND SPECIAL RADIO SERVICES STATIONS IN THE MARITIME SERVICES Global Maritime Distress and Safety System (GMDSS) General Provisions § 80.1074 Radio maintenance personnel for at-sea maintenance. (a)...

  8. 47 CFR 80.1074 - Radio maintenance personnel for at-sea maintenance.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Radio maintenance personnel for at-sea... AND SPECIAL RADIO SERVICES STATIONS IN THE MARITIME SERVICES Global Maritime Distress and Safety System (GMDSS) General Provisions § 80.1074 Radio maintenance personnel for at-sea maintenance. (a)...

  9. Maintenance program guidelines for programmatic equipment

    SciTech Connect

    Not Available

    1994-11-01

    The Division Directors at Lawrence Berkeley Laboratory are responsible for implementing a maintenance program for research equipment (also referred to as programmatic equipment) assigned to them. The program must allow maintenance to be accomplished in a manner that promotes operational safety, environmental protection and compliance, and cost effectiveness; that preserves the intended functions of the facilities and equipment; and that supports the programmatic mission of the Laboratory. Programmatic equipment -- such as accelerators, lasers, radiation detection equipment, and glove boxes -- is dedicated specifically to research. Installed equipment, by contrast, includes the mechanical and electrical systems installed as part of basic building construction, equipment essential to the normal functioning of the facility and its intended use. Examples of installed equipment are heating, ventilating, and air conditioning systems; elevators; and communications systems. The LBL Operating and Assurance Program Plan (PUB-3111, Revision 4) requires that a maintenance program be prepared for programmatic equipment and defines the basic maintenance program elements. Such a program of regular, documented maintenance is vital to the safety and quality of research activities. As a part of that support, this document offers guidance to Laboratory organizations for developing their maintenance programs. It clarifies the maintenance requirements of the Operating and Assurance Program (OAP) and presents an approach that, while not the only possibility, can be expected to produce an effective maintenance program for research equipment belonging to the Laboratory`s organizations.

  10. Minor Maintenance. A Resource Manual for Custodians.

    ERIC Educational Resources Information Center

    Florida State Dept. of Education, Tallahassee.

    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…

  11. Maintenance Downtime Wednesday, 2/24

    Atmospheric Science Data Center

    2016-02-23

    ... 07:00 am - 12:00 pm EST Event Impact:  The Data Pool, MISR order and browse tools, TAD, TES and MOPITT Search and Subset ... unavailable from 7am - 12pm for scheduled maintenance. Data processing and distribution may be impacted during maintenance.   ...

  12. Maintenance Downtime Wed., 5/04

    Atmospheric Science Data Center

    2016-05-04

    ... 07:00 am - 11:00 am EST Event Impact:  The Data Pool, Reverb, MISR order and browse tools, CERES, MOPITT, TAD and TES ... Wed. at 7am - 11am for scheduled maintenance. Data processing and distribution may be impacted during maintenance. We apologize ...

  13. 30 CFR 57.5066 - Maintenance standards.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 30 Mineral Resources 1 2012-07-01 2012-07-01 false Maintenance standards. 57.5066 Section 57.5066... SAFETY AND HEALTH SAFETY AND HEALTH STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Air Quality, Radiation... Maintenance standards. (a) Any diesel powered equipment operated at any time in underground areas must...

  14. School Bus Maintenance. Bulletin, 1948, No. 2

    ERIC Educational Resources Information Center

    Featherston, E. Glenn

    1948-01-01

    This bulletin is one in the series on pupil transportation issued by the Office of Education. Its purpose is to furnish information and guidance for local school administrators and others who are concerned with school bus maintenance. Programs of school bus maintenance vary among the 48 States. Presumably all contract vehicles are maintained by…

  15. 40 CFR 1033.125 - Maintenance instructions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 32 2010-07-01 2010-07-01 false Maintenance instructions. 1033.125 Section 1033.125 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR POLLUTION CONTROLS CONTROL OF EMISSIONS FROM LOCOMOTIVES Emission Standards and Related Requirements § 1033.125 Maintenance instructions. Give the owner of...

  16. Operation and maintenance cost-cutting

    SciTech Connect

    Hollingshead, T.W.

    1996-12-31

    This presentation by Timothy W. Hollingshead, Technical Services Manager, Pacific Gas and Electric, is about cutting costs in the Operation and Maintenance phase of geothermal energy production. The necessity of cost control, keeping workers well-trained and avoiding OSHA fines, taking advantages of new technologies, and establishing predictive maintenance programs are some of the issues discussed in this article.

  17. The Chemistry of Swimming Pool Maintenance

    ERIC Educational Resources Information Center

    Salter, Carl; Langhus, David L.

    2007-01-01

    The study of chemistry involved in the maintenance of a swimming pool provides a lot of chemical education to the students, including the demonstration of the importance of pH in water chemistry. The various chemical aspects hidden in the maintenance of the pool are being described.

  18. Preventive Maintenance Guidelines for School Facilities.

    ERIC Educational Resources Information Center

    Maciha, John C.

    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…

  19. Plumbing. Building Maintenance. Module III. Instructor's Guide.

    ERIC Educational Resources Information Center

    Brunk, Art

    This curriculum guide, one of six modules keyed to the building maintenance competency profile developed by industry and education professionals, provides materials for a plumbing procedures unit of seven lessons. Lesson topics are: safety procedures, joining pipes, water systems, fixtures and appliances, maintenance and repair, drainage systems,…

  20. Test, Control and Monitor System maintenance plan

    NASA Technical Reports Server (NTRS)

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

    1993-01-01

    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.

  1. 40 CFR 1042.125 - Maintenance instructions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... accumulation on your emission-data engines as described in § 1042.245 and in 40 CFR part 1065. The restrictions...-related maintenance generally includes maintenance on the components we specify in 40 CFR part 1068... this section: (i) For EGR-related filters and coolers, PCV valves, and fuel injector tips...

  2. 40 CFR 1042.125 - Maintenance instructions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... accumulation on your emission-data engines as described in § 1042.245 and in 40 CFR part 1065. The restrictions...-related maintenance generally includes maintenance on the components we specify in 40 CFR part 1068... this section: (i) For EGR-related filters and coolers, PCV valves, and fuel injector tips...

  3. 40 CFR 1042.125 - Maintenance instructions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... accumulation on your emission-data engines as described in § 1042.245 and in 40 CFR part 1065. The restrictions...-related maintenance generally includes maintenance on the components we specify in 40 CFR part 1068... this section: (i) For EGR-related filters and coolers, PCV valves, and fuel injector tips...

  4. 40 CFR 1042.125 - Maintenance instructions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... accumulation on your emission-data engines as described in § 1042.245 and in 40 CFR part 1065. The restrictions...-related maintenance generally includes maintenance on the components we specify in 40 CFR part 1068... this section: (i) For EGR-related filters and coolers, PCV valves, and fuel injector tips...

  5. Problematics of different technical maintenance for computers

    NASA Technical Reports Server (NTRS)

    Dostalek, Z.

    1977-01-01

    Two modes of operations are used in the technical maintenance of computers: servicing provided by the equipment supplier, and that done by specially trained computer users. The advantages and disadvantages of both modes are discussed. Maintenance downtime is tabulated for two computers serviced by user employees over an eight year period.

  6. 21 CFR 211.58 - Maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 4 2010-04-01 2010-04-01 false Maintenance. 211.58 Section 211.58 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) DRUGS: GENERAL... Maintenance. Any building used in the manufacture, processing, packing, or holding of a drug product shall...

  7. 7 CFR 772.5 - Security maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... liquidation if warranted. (3) For real estate security for IMP loans, service the account according to 7 CFR... 7 Agriculture 7 2010-01-01 2010-01-01 false Security maintenance. 772.5 Section 772.5 Agriculture... SPECIAL PROGRAMS SERVICING MINOR PROGRAM LOANS § 772.5 Security maintenance. (a) General. Borrowers...

  8. 40 CFR 86.098-25 - Maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 18 2010-07-01 2010-07-01 false Maintenance. 86.098-25 Section 86.098-25 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED...-Fueled and Methanol-Fueled Heavy-Duty Vehicles § 86.098-25 Maintenance. (a) (b)(1)-(2) (3)(i)-(v)...

  9. 49 CFR 399.211 - Maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 5 2010-10-01 2010-10-01 false Maintenance. 399.211 Section 399.211 Transportation Other Regulations Relating to Transportation (Continued) FEDERAL MOTOR CARRIER SAFETY... STANDARDS Step, Handhold, and Deck Requirements for Commercial Motor Vehicles § 399.211 Maintenance....

  10. 23 CFR 660.115 - Maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Maintenance. 660.115 Section 660.115 Highways FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION ENGINEERING AND TRAFFIC OPERATIONS SPECIAL PROGRAMS (DIRECT FEDERAL) Forest Highways § 660.115 Maintenance. The cooperator having jurisdiction over a FH...

  11. 14 CFR 91.1113 - Maintenance recordkeeping.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Maintenance recordkeeping. 91.1113 Section 91.1113 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION... Operations Program Management § 91.1113 Maintenance recordkeeping. Each fractional ownership program...

  12. 30 CFR 56.9313 - Roadway maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Roadway maintenance. 56.9313 Section 56.9313 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND NONMETAL MINE... § 56.9313 Roadway maintenance. Water, debris, or spilled material on roadways which creates hazards...

  13. 12 CFR 347.205 - Record maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 12 Banks and Banking 4 2010-01-01 2010-01-01 false Record maintenance. 347.205 Section 347.205 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION REGULATIONS AND STATEMENTS OF GENERAL POLICY INTERNATIONAL BANKING Foreign Banks § 347.205 Record maintenance. The records of each insured branch shall...

  14. 12 CFR 347.210 - Asset maintenance.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 5 2014-01-01 2014-01-01 false Asset maintenance. 347.210 Section 347.210 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION REGULATIONS AND STATEMENTS OF GENERAL POLICY INTERNATIONAL BANKING Foreign Banks § 347.210 Asset maintenance. (a) An insured branch of a foreign bank...

  15. 12 CFR 347.205 - Record maintenance.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 5 2014-01-01 2014-01-01 false Record maintenance. 347.205 Section 347.205 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION REGULATIONS AND STATEMENTS OF GENERAL POLICY INTERNATIONAL BANKING Foreign Banks § 347.205 Record maintenance. The records of each insured branch shall...

  16. 12 CFR 347.205 - Record maintenance.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 12 Banks and Banking 4 2011-01-01 2011-01-01 false Record maintenance. 347.205 Section 347.205 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION REGULATIONS AND STATEMENTS OF GENERAL POLICY INTERNATIONAL BANKING Foreign Banks § 347.205 Record maintenance. The records of each insured branch shall...

  17. 12 CFR 347.205 - Record maintenance.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 5 2013-01-01 2013-01-01 false Record maintenance. 347.205 Section 347.205 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION REGULATIONS AND STATEMENTS OF GENERAL POLICY INTERNATIONAL BANKING Foreign Banks § 347.205 Record maintenance. The records of each insured branch shall...

  18. 12 CFR 347.210 - Asset maintenance.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 5 2012-01-01 2012-01-01 false Asset maintenance. 347.210 Section 347.210 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION REGULATIONS AND STATEMENTS OF GENERAL POLICY INTERNATIONAL BANKING Foreign Banks § 347.210 Asset maintenance. (a) An insured branch of a foreign bank...

  19. 12 CFR 347.210 - Asset maintenance.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 5 2013-01-01 2013-01-01 false Asset maintenance. 347.210 Section 347.210 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION REGULATIONS AND STATEMENTS OF GENERAL POLICY INTERNATIONAL BANKING Foreign Banks § 347.210 Asset maintenance. (a) An insured branch of a foreign bank...

  20. 12 CFR 347.210 - Asset maintenance.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 12 Banks and Banking 4 2011-01-01 2011-01-01 false Asset maintenance. 347.210 Section 347.210 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION REGULATIONS AND STATEMENTS OF GENERAL POLICY INTERNATIONAL BANKING Foreign Banks § 347.210 Asset maintenance. (a) An insured branch of a foreign bank...

  1. 12 CFR 347.210 - Asset maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 12 Banks and Banking 4 2010-01-01 2010-01-01 false Asset maintenance. 347.210 Section 347.210 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION REGULATIONS AND STATEMENTS OF GENERAL POLICY INTERNATIONAL BANKING Foreign Banks § 347.210 Asset maintenance. (a) An insured branch of a foreign bank...

  2. 12 CFR 347.205 - Record maintenance.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 5 2012-01-01 2012-01-01 false Record maintenance. 347.205 Section 347.205 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION REGULATIONS AND STATEMENTS OF GENERAL POLICY INTERNATIONAL BANKING Foreign Banks § 347.205 Record maintenance. The records of each insured branch shall...

  3. 40 CFR 1042.125 - Maintenance instructions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... service accumulation on your emission-data engines. (c) Special maintenance. You may specify more frequent... written maintenance instructions that a repair shop or person of the owner's choosing may maintain... warranty on a requirement that the engine be serviced by your franchised dealers or any other...

  4. 14 CFR 91.1111 - Maintenance training.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 2 2013-01-01 2013-01-01 false Maintenance training. 91.1111 Section 91.1111 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED... Operations Program Management § 91.1111 Maintenance training. The program manager must ensure that...

  5. 14 CFR 91.1111 - Maintenance training.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 2 2011-01-01 2011-01-01 false Maintenance training. 91.1111 Section 91.1111 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED... Operations Program Management § 91.1111 Maintenance training. The program manager must ensure that...

  6. 14 CFR 91.1111 - Maintenance training.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 2 2014-01-01 2014-01-01 false Maintenance training. 91.1111 Section 91.1111 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED... Operations Program Management § 91.1111 Maintenance training. The program manager must ensure that...

  7. 14 CFR 91.1111 - Maintenance training.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 2 2012-01-01 2012-01-01 false Maintenance training. 91.1111 Section 91.1111 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED... Operations Program Management § 91.1111 Maintenance training. The program manager must ensure that...

  8. 47 CFR 101.1109 - Records maintenance.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Records maintenance. 101.1109 Section 101.1109 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES FIXED MICROWAVE SERVICES Competitive Bidding Procedures for LMDS § 101.1109 Records maintenance. All winning...

  9. 40 CFR 141.33 - Record maintenance.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 23 2014-07-01 2014-07-01 false Record maintenance. 141.33 Section 141.33 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) WATER PROGRAMS (CONTINUED) NATIONAL PRIMARY DRINKING WATER REGULATIONS Reporting and Recordkeeping § 141.33 Record maintenance. Any owner or operator of a public water...

  10. 14 CFR 91.1111 - Maintenance training.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Maintenance training. 91.1111 Section 91... Operations Program Management § 91.1111 Maintenance training. The program manager must ensure that all... annual recurrent training and are competent to perform those duties....

  11. Void Fraction Instrument operation and maintenance manual

    SciTech Connect

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

    1994-09-01

    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.

  12. Competency-Based Horticulture: Turfgrass Maintenance Worker.

    ERIC Educational Resources Information Center

    College of DuPage, Glen Ellyn, IL.

    This competency-based horticulture curriculum guide is designed to provide secondary and postsecondary horticulture teachers with a task-oriented program for training turfgrass maintenance workers. It contains a master resource list, a listing of turfgrass maintenance resources available from various states, and 59 competency task sheets organized…

  13. 7 CFR 772.5 - Security maintenance.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 7 2014-01-01 2014-01-01 false Security maintenance. 772.5 Section 772.5 Agriculture... SPECIAL PROGRAMS SERVICING MINOR PROGRAM LOANS § 772.5 Security maintenance. (a) General. Borrowers are responsible for maintaining the collateral that is serving as security for their Minor Program loan...

  14. 7 CFR 772.5 - Security maintenance.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... liquidation if warranted. (3) For real estate security for IMP loans, service the account according to 7 CFR... 7 Agriculture 7 2012-01-01 2012-01-01 false Security maintenance. 772.5 Section 772.5 Agriculture... SPECIAL PROGRAMS SERVICING MINOR PROGRAM LOANS § 772.5 Security maintenance. (a) General. Borrowers...

  15. School Facilities Maintenance and Operations Manual.

    ERIC Educational Resources Information Center

    Association of School Business Officials International, Reston, VA.

    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…

  16. 47 CFR 80.96 - Maintenance tests.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Maintenance tests. 80.96 Section 80.96... tests. Stations are authorized to engage in test transmissions necessary for maintenance of the station. Test transmissions must conform to appropriate test operating procedures....

  17. Standardized Curriculum for General Industrial Maintenance Trades.

    ERIC Educational Resources Information Center

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

    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)…

  18. Computer Maintenance Technology. Suggested Basic Course Outline.

    ERIC Educational Resources Information Center

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

    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…

  19. 50 CFR 80.17 - Maintenance.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...) FINANCIAL ASSISTANCE-WILDLIFE SPORT FISH RESTORATION PROGRAM ADMINISTRATIVE REQUIREMENTS, PITTMAN-ROBERTSON WILDLIFE RESTORATION AND DINGELL-JOHNSON SPORT FISH RESTORATION ACTS § 80.17 Maintenance. The State is responsible for maintenance of all capital improvements acquired or constructed with Wildlife and Sport...

  20. 47 CFR 101.1109 - Records maintenance.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 5 2013-10-01 2013-10-01 false Records maintenance. 101.1109 Section 101.1109 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES FIXED MICROWAVE SERVICES Competitive Bidding Procedures for LMDS § 101.1109 Records maintenance. All winning...

  1. 47 CFR 101.1109 - Records maintenance.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Records maintenance. 101.1109 Section 101.1109 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES FIXED MICROWAVE SERVICES Competitive Bidding Procedures for LMDS § 101.1109 Records maintenance. All winning...

  2. 47 CFR 101.1109 - Records maintenance.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Records maintenance. 101.1109 Section 101.1109 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES FIXED MICROWAVE SERVICES Competitive Bidding Procedures for LMDS § 101.1109 Records maintenance. All winning...

  3. The Cognitive Behavioral Approach to Weight Maintenance.

    ERIC Educational Resources Information Center

    Girdano, Dorothy Dusek

    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…

  4. 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

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

    2015-03-01

    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 α-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 α-pinene. Comparison of different types of Lavender essential oils showed the composition similarity between Iranian and Italian (Sardinia Island) Lavenders. PMID:25621436

  5. Effective maintenance practices to manage system aging

    NASA Astrophysics Data System (ADS)

    Chockie, Alan; Bjorkelo, Kenneth

    A study for the Nuclear Regulatory Commission was recently undertaken to identify effective maintenance practices that could be adapted by the nuclear industry in the United States to assist in managing the aging degradation of plant systems and components. Four organizations were examined to assess the influence of maintenance programs on addressing the system and component aging degradation issues. An effective maintenance program was found to be essential to the management of system and component aging. Four key elements of an effective maintenance program that are important to an aging management were identified: (1) the selection of critical systems and components; (2) the development of an understanding of aging through the collection and analysis of equipment performance information; (3) the development of appropriate preventive and predictive maintenance tasks to manage equipment and system aging degradation; and (4) the use of feedback mechanisms to continuously improve the management of aging systems and components. These elements were found to be common to all four organizations.

  6. Remote Maintenance Support in Virtual Service Enterprises

    NASA Astrophysics Data System (ADS)

    Kamio, Yoichi; Kasai, Fumio; Kimura, Toshiaki; Fukuda, Yoshiro; Hartel, Ingo; Zhou, Mingwei

    This paper discusses a scheme that allows all parties involved in the maintenance of a chemical plant: the plant owner (customer), the engineering company, the equipment vendors, and the maintenance firms, to form a virtual service enterprise (VSE) whenever a maintenance service is necessary, in an attempt to provide required services more timely. This paper also discusses the requirements for knowledge management and risk management in such a VSE environment, and proposes a secure hosting service environment that allows all the parties to share information and applications, and to collaborate during plant operation and service fulfilment. To evaluate and demonstrate the feasibility of this scheme, a prototype of the remote maintenance system developed for a fertiliser plant in Indonesia is presented. Finally, a scenario of how to utilise such a remote maintenance system, the possibility of collaboration among VSE partners, and the advantages of utilising the proposed hosting services in VSE are also discussed.

  7. Psychotherapy in the maintenance treatment of depression.

    PubMed

    Weissman, M M

    1994-12-01

    A review of epidemiologic and clinical data on depression suggests that psychotherapy is both an important alternative as well as a supplement to medication for the maintenance treatment of depression. Psychotherapy is an alternative for patients during periods when medication may not be suitable or feasible (e.g. pregnancy, nursing, before or during major surgery, or in the elderly). Psychotherapy also has a role in maintenance treatment in dealing with the social and interpersonal consequences or triggers of recurrent depression. Although the number of continuation or maintenance treatment trials that include psychotherapy is quite limited, the efficacy of maintenance treatment in the delay of recurrence and enhancement of social functioning is best established for interpersonal psychotherapy. There are also some results concerning cognitive and behavioural therapies for maintenance treatment of depression. PMID:7873137

  8. DARHT operations and maintenance manual

    SciTech Connect

    Not Available

    1991-12-01

    The Dual Axis Radiographic Hydrodynamic Test (DARHT) injector system was designed, constructed and tested in the dummy load configuration at Pulse Sciences, Inc. (PSI), San Leandro, CA for Los Alamos National Laboratories (LANL) during the period from September 1989 through December 1990. The injector was installed and its operation was demonstrated in the dummy load configuration at LANL from January 1991 through April 1991. Testing of the system configuration into a diode load began in June 1991. Cross-sectional views of the injector in both the dummy load and system configurations are shown. The injector is designed to produce a 4 MV, flat-top ({plus_minus} 1%), 65 nsec (99--99%) acceleration pulse into a 150 ohm load with a command fire jitter of less than 3 nsec (3{sigma}). The load consists of an adjustable sodium thiosulfate solution resistor located at the vacuum tube interface in parallel with an {approximately}1 k{Omega} electron beam diode. This manual describes the injector and its ancillary systems and gives operating, maintenance and assembly instructions for the system in the dummy load configuration.

  9. Designing a scrubber for maintenance

    SciTech Connect

    Mahlmeister, M.E.; Baron, E.S.; Watts, J.

    1996-07-01

    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 1 and 2 at the Milliken Steam Electric Station. Units 1 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 1 system in June 1995. The project incorporates several unique aspects: low pH operation; a ceramic tile-lined concurrent/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.

  10. KSHV Genome Replication and Maintenance

    PubMed Central

    Purushothaman, Pravinkumar; Dabral, Prerna; Gupta, Namrata; Sarkar, Roni; Verma, Subhash C.

    2016-01-01

    Kaposi's sarcoma associated herpesvirus (KSHV) or human herpesvirus 8 (HHV8) is a major etiological agent for multiple severe malignancies in immune-compromised patients. KSHV establishes lifetime persistence in the infected individuals and displays two distinct life cycles, generally a prolonged passive latent, and a short productive or lytic cycle. During latent phase, the viral episome is tethered to the host chromosome and replicates once during every cell division. Latency-associated nuclear antigen (LANA) is a predominant multifunctional nuclear protein expressed during latency, which plays a central role in episome tethering, replication and perpetual segregation of the episomes during cell division. LANA binds cooperatively to LANA binding sites (LBS) within the terminal repeat (TR) region of the viral episome as well as to the cellular nucleosomal proteins to tether viral episome to the host chromosome. LANA has been shown to modulate multiple cellular signaling pathways and recruits various cellular proteins such as chromatin modifying enzymes, replication factors, transcription factors, and cellular mitotic framework to maintain a successful latent infection. Although, many other regions within the KSHV genome can initiate replication, KSHV TR is important for latent DNA replication and possible segregation of the replicated episomes. Binding of LANA to LBS favors the recruitment of various replication factors to initiate LANA dependent DNA replication. In this review, we discuss the molecular mechanisms relevant to KSHV genome replication, segregation, and maintenance of latency. PMID:26870016

  11. Balance Problems

    MedlinePlus

    ... our e-newsletter! Aging & Health A to Z Balance Problems Basic Facts & Information What are Balance Problems? Having good balance means being able to ... Only then can you “keep your balance.” Why Balance is Important Your feelings of dizziness may last ...

  12. Parking Problem

    ERIC Educational Resources Information Center

    Foster, Colin

    2012-01-01

    This is the story of a real problem, not a problem that is contrived, or invented for the convenience of the appropriate planning tool. This activity by a group of students, defined simply as "8FN", might be likened to an "end of term concert". If you just happened to be a delegate at the ATM Conference 2003 you might remember the analogy. Social…

  13. File Maintenance of MeSH Headings in MEDLINE.

    ERIC Educational Resources Information Center

    Humphrey, Susanne M.

    1984-01-01

    Emphasizes class maintenance of National Library of Medicine's bibliographic retrieval file in which maintenance actions (replacement, deletion, addition) reflect yearly changes in Medical Subject Headings (MeSH). File maintenance of other authoritative information attached to headings, class maintenance failures, checking class maintenance,…

  14. Maintenance self-assessments - An INPO (Institute of Nuclear Power Operation) perspective

    SciTech Connect

    Subalusky, W.T.

    1990-06-01

    In March 1987, all nuclear utilities in the US were requested by the Institute of Nuclear Power Operations (INPO) to perform a self-assessment of their maintenance programs. The goal of these self-assessments was to have each station identify any existing problem areas in maintenance in clear and sufficient detail to determine the root causes of the problems and to provide a foundation for subsequent corrective actions. The self-assessments were to be performed by each nuclear station using the INPO document Guidelines for the Conduct of Maintenance at Nuclear Power Stations. By December 1987, 72 of 74 stations had completed the self-assessments, and by the middle of 1988, all stations had completed this systematic review of their maintenance programs. As part of an industry plan to ensure continued improvements in maintenance, INPO is following up on the effectiveness of these self-assessments during the course of plant evaluation visits. This presentation briefly reviews the approaches to self-assessment of the station's maintenance programs, some of the lessons learned from this effort, and the results, to date, of INPO follow-up efforts in this area.

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

    SciTech Connect

    1995-12-01

    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.

  16. Building a maintenance policy through a multi-criterion decision-making model

    NASA Astrophysics Data System (ADS)

    Faghihinia, Elahe; Mollaverdi, Naser

    2012-08-01

    A major competitive advantage of production and service systems is establishing a proper maintenance policy. Therefore, maintenance managers should make maintenance decisions that best fit their systems. Multi-criterion decision-making methods can take into account a number of aspects associated with the competitiveness factors of a system. This paper presents a multi-criterion decision-aided maintenance model with three criteria that have more influence on decision making: reliability, maintenance cost, and maintenance downtime. The Bayesian approach has been applied to confront maintenance failure data shortage. Therefore, the model seeks to make the best compromise between these three criteria and establish replacement intervals using Preference Ranking Organization Method for Enrichment Evaluation (PROMETHEE II), integrating the Bayesian approach with regard to the preference of the decision maker to the problem. Finally, using a numerical application, the model has been illustrated, and for a visual realization and an illustrative sensitivity analysis, PROMETHEE GAIA (the visual interactive module) has been used. Use of PROMETHEE II and PROMETHEE GAIA has been made with Decision Lab software. A sensitivity analysis has been made to verify the robustness of certain parameters of the model.

  17. Optimisation of maintenance concept choice using risk-decision factor - a case study

    NASA Astrophysics Data System (ADS)

    Popovic, Vladimir M.; Vasic, Branko M.; Rakicevic, Branislav B.; Vorotovic, Goran S.

    2012-10-01

    The design of maintenance system and the corresponding logistic support is a very complex process, during which the aim is to find the compromise solutions regarding the relations among different maintenance procedures and the ways of their implementation. As a result of this, various solutions can be adopted, since this is conditioned by a series of important factors and criteria, which can be contradictory sometimes. There are different perspectives on ways of solving practical maintenance problems, that is dilemmas when it comes to the choice of maintenance concept. The principal dilemma is how and when to decide on carrying out maintenance procedures. Should the decision be based on theoretical grounds or experience, how does one reconcile those two extremes, who is to decide upon this? In this article we have offered one, basically new solution as a possibility for maintenance concept choice, based on a significant modification of the widely used failure modes and effects analysis (FMEA) method. This solution is risk-decision factor (RDF). This is a result of seven parameters (of different importance and weight) that have the key impact on the process of production and logistic support. The application of this factor is illustrated by the example of planning, organisation and functioning of the maintenance system applied in The Institute for Manufacturing Banknotes and Coins (ZIN) in Belgrade.

  18. Magnetically Attached Multifunction Maintenance Rover

    NASA Technical Reports Server (NTRS)

    Bar-Cohen, Yoseph; Joffe, Benjamin

    2005-01-01

    A versatile mobile telerobot, denoted the magnetically attached multifunction maintenance rover (MAGMER), has been proposed for use in the inspection and maintenance of the surfaces of ships, tanks containing petrochemicals, and other large ferromagnetic structures. As its name suggests, this robot would utilize magnetic attraction to adhere to a structure. As it moved along the surface of the structure, the MAGMER would perform tasks that could include close-up visual inspection by use of video cameras, various sensors, and/or removal of paint by water-jet blasting, laser heating, or induction heating. The water-jet nozzles would be mounted coaxially within compressed-air-powered venturi nozzles that would collect the paint debris dislodged by the jets. The MAGMER would be deployed, powered, and controlled from a truck, to which it would be connected by hoses for water, compressed air, and collection of debris and by cables for electric power and communication (see Figure 1). The operation of the MAGMER on a typical large structure would necessitate the use of long cables and hoses, which can be heavy. To reduce the load of the hoses and cables on the MAGMER and thereby ensure its ability to adhere to vertical and overhanging surfaces, the hoses and cables would be paid out through telescopic booms that would be parts of a MAGMER support system. The MAGMER would move by use of four motorized, steerable wheels, each of which would be mounted in an assembly that would include permanent magnets and four pole pieces (see Figure 2). The wheels would protrude from between the pole pieces by only about 3 mm, so that the gap between the pole pieces and the ferromagnetic surface would be just large enough to permit motion along the surface but not so large as to reduce the magnetic attraction excessively. In addition to the wheel assemblies, the MAGMER would include magnetic adherence enhancement fixtures, which would comprise arrays of permanent magnets and pole pieces

  19. Does the Health Maintenance Facility Provide Speciality Capabilities?

    NASA Technical Reports Server (NTRS)

    Boyce, Joey; Wurgler, James; Broadwell, Kim; Martin, William; Stiernberg, Charles M.; Bove, Alfred; Fromm, Rob; O'Neill, Daniel

    1991-01-01

    The Health Maintenance Facility (HMF) is capable of handling all minor illnesses, most moderate illnesses, and some major illnesses on board a space station. Its primary purpose should be to treat problems that are mission threatening, not life threatening. The HMF will have greater medical capabilities than those currently on Navy submarines. Much of the discussion in this document focuses on the possibilities of treating specific medical conditions on board a space station. The HMF will be limited to caring for critically ill patients for a few days, so a crew return vehicle will be important.

  20. Building an experience factory for maintenance

    NASA Technical Reports Server (NTRS)

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

    1994-01-01

    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.

  1. Identifying Human Factors Issues in Aircraft Maintenance Operations

    NASA Technical Reports Server (NTRS)

    Veinott, Elizabeth S.; Kanki, Barbara G.; Shafto, Michael G. (Technical Monitor)

    1995-01-01

    Maintenance operations incidents submitted to the Aviation Safety Reporting System (ASRS) between 1986-1992 were systematically analyzed in order to identify issues relevant to human factors and crew coordination. This exploratory analysis involved 95 ASRS reports which represented a wide range of maintenance incidents. The reports were coded and analyzed according to the type of error (e.g, wrong part, procedural error, non-procedural error), contributing factors (e.g., individual, within-team, cross-team, procedure, tools), result of the error (e.g., aircraft damage or not) as well as the operational impact (e.g., aircraft flown to destination, air return, delay at gate). The main findings indicate that procedural errors were most common (48.4%) and that individual and team actions contributed to the errors in more than 50% of the cases. As for operational results, most errors were either corrected after landing at the destination (51.6%) or required the flight crew to stop enroute (29.5%). Interactions among these variables are also discussed. This analysis is a first step toward developing a taxonomy of crew coordination problems in maintenance. By understanding what variables are important and how they are interrelated, we may develop intervention strategies that are better tailored to the human factor issues involved.

  2. Portable Knowledge-Based Diagnostic And Maintenance Systems

    NASA Astrophysics Data System (ADS)

    Darvish, John; Olson, Noreen S.

    1989-03-01

    It is difficult to diagnose faults and maintain weapon systems because (1) they are highly complex pieces of equipment composed of multiple mechanical, electrical, and hydraulic assemblies, and (2) talented maintenance personnel are continuously being lost through the attrition process. To solve this problem, we developed a portable diagnostic and maintenance aid that uses a knowledge-based expert system. This aid incorporates diagnostics, operational procedures, repair and replacement procedures, and regularly scheduled maintenance into one compact, 18-pound graphics workstation. Drawings and schematics can be pulled up from the CD-ROM to assist the operator in answering the expert system's questions. Work for this aid began with the development of the initial knowledge-based expert system in a fast prototyping environment using a LISP machine. The second phase saw the development of a personal computer-based system that used videodisc technology to pictorially assist the operator. The current version of the aid eliminates the high expenses associated with videodisc preparation by scanning in the art work already in the manuals. A number of generic software tools have been developed that streamlined the construction of each iteration of the aid; these tools will be applied to the development of future systems.

  3. Two-machine flow shop scheduling integrated with preventive maintenance planning

    NASA Astrophysics Data System (ADS)

    Wang, Shijin; Liu, Ming

    2016-02-01

    This paper investigates an integrated optimisation problem of production scheduling and preventive maintenance (PM) in a two-machine flow shop with time to failure of each machine subject to a Weibull probability distribution. The objective is to find the optimal job sequence and the optimal PM decisions before each job such that the expected makespan is minimised. To investigate the value of integrated scheduling solution, computational experiments on small-scale problems with different configurations are conducted with total enumeration method, and the results are compared with those of scheduling without maintenance but with machine degradation, and individual job scheduling combined with independent PM planning. Then, for large-scale problems, four genetic algorithm (GA) based heuristics are proposed. The numerical results with several large problem sizes and different configurations indicate the potential benefits of integrated scheduling solution and the results also show that proposed GA-based heuristics are efficient for the integrated problem.

  4. Design of a decision support system for preventive maintenance planning in health structures.

    PubMed

    Miniati, Roberto; Dori, Fabrizio; Gentili, Guido Biffi

    2012-01-01

    The appropriate maintenance of medical devices, including performance inspections and preventive maintenance, is fundamental in mitigating clinical risk caused by adverse events in health care. Although several models for managing and planning preventive maintenance have been developed, the problem is lacking in standard methodology and still presents an open challenge for today's health experts. This paper aims to provide and develop methodology together with support systems able to assist decision makers in constructing preventive maintenance and performance inspection plans, taking into account both the technical and economic needs of hospital clinical engineering departments. Interventions by decision makers are of crucial importance within complex situations where large numbers, types of devices and different contractual situations are involved. SISMA system has achieved optimal results with minimum expense and maximum security for patients and technicians at the University Hospital of Florence where it has been applied in actual case studies. PMID:22735735

  5. Randomized trial of tapas acupressure technique for weight loss maintenance

    PubMed Central

    2012-01-01

    Background Obesity is an urgent public health problem, yet only a few clinical trials have systematically tested the efficacy of long-term weight-loss maintenance interventions. This randomized clinical trial tested the efficacy of a novel mind and body technique for weight-loss maintenance. Methods Participants were obese adults who had completed a six-month behavioral weight-loss program prior to randomization. Those who successfully lost weight were randomized into either an experimental weight-loss maintenance intervention, Tapas Acupressure Technique (TAT®), or a control intervention comprised of social-support group meetings (SS) led by professional facilitators. TAT combines self-applied light pressure to specific acupressure points accompanied by a prescribed sequence of mental steps. Participants in both maintenance conditions attended eight group sessions over six months of active weight loss maintenance intervention, followed by an additional 6 months of no intervention. The main outcome measure was change in weight from the beginning of the weight loss maintenance intervention to 12 months later. Secondary outcomes were change in depression, stress, insomnia, and quality of life. We used analysis of covariance as the primary analysis method. Missing values were replaced using multiple imputation. Results Among 285 randomized participants, 79% were female, mean age was 56 (standard deviation (sd) = 11), mean BMI at randomization was 34 (sd = 5), and mean initial weight loss was 9.8 kg (sd = 5). In the primary outcome model, there was no significant difference in weight regain between the two arms (1.72 kg (se 0.85) weight regain for TAT and 2.96 kg (se 0.96) weight regain for SS, p < 0.097) Tests of between- arm differences for secondary outcomes were also not significant. A secondary analysis showed a significant interaction between treatment and initial weight loss (p < .036), with exploratory post hoc tests showing that greater initial weight loss

  6. Small satellite debris catalog maintenance issues

    NASA Technical Reports Server (NTRS)

    Jackson, Phoebe A.

    1991-01-01

    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.

  7. Conflict Resolution Communications.

    ERIC Educational Resources Information Center

    Lincoln, Melinda G.

    2002-01-01

    Suggests that, due to escalating violence in contemporary society, community colleges should offer certificate or degree programs in conflict resolution. Describes a conflict resolution communication program, which teaches communication skills, mediation processes, and coping strategies to prospective mediators. (NB)

  8. A Proposed Approach for Prioritizing Maintenance at NASA Centers

    NASA Technical Reports Server (NTRS)

    Dunn, Steven C.; Sawyer, Melvin H.

    2013-01-01

    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.

  9. The Many Features of Stanford's Housing Maintenance Software.

    ERIC Educational Resources Information Center

    Milshtein, Amy

    1999-01-01

    Explains how Stanford University custom designed its own building maintenance and administration software package: the Housing Operations Maintenance Enterprise Resource (HOMER). Describes how HOMER relieved facility maintenance staff from some archaic systems, and its development and functionality. (GR)

  10. 28 CFR 35.133 - Maintenance of accessible features.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Maintenance of accessible features. 35... DISABILITY IN STATE AND LOCAL GOVERNMENT SERVICES General Requirements § 35.133 Maintenance of accessible... access due to maintenance or repairs....

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

    SciTech Connect

    Fisk, E.L.

    1994-06-01

    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.

  12. Urination Problems

    MedlinePlus

    ... back or groin? Yes You may have a KIDNEY STONE or another serious problem. EMERGENCY See your doctor ... the bladder, called INTERSTITIAL CYSTITIS, or from a KIDNEY STONE stuck in the bladder, or a chemical in ...

  13. Kidney Problems

    MedlinePlus

    ... our e-newsletter! Aging & Health A to Z Kidney Problems Basic Facts & Information The kidneys are two ... the production of red blood cells. What are Kidney Diseases? For about one-third of older people, ...

  14. Hearing Problems

    MedlinePlus

    ... This flow chart will help direct you if hearing loss is a problem for you or a family ... may damage the inner ear. This kind of hearing loss is called OCCUPATIONAL. Prevent occupational hearing loss by ...

  15. Sleep Problems

    MedlinePlus

    ... For Consumers Consumer Information by Audience For Women Sleep Problems Share Tweet Linkedin Pin it More sharing ... PDF 474KB) En Español Medicines to Help You Sleep Tips for Better Sleep Basic Facts about Sleep ...

  16. Thyroid Problems

    MedlinePlus

    ... treated differently. Common thyroid disorders and problems include: Hypothyroidism Hypothyroidism is a disorder in which your thyroid doesn’ ... normal after you get better. If you have hypothyroidism, however, the levels of T4 in your blood ...

  17. Nipple problems

    MedlinePlus

    ... Inverted nipple; Nipple problems Images Female breast Intraductal papilloma Mammary gland Abnormal discharge from the nipple Normal ... 8. Read More Breast cancer Endocrine glands Intraductal papilloma Update Date 11/16/2014 Updated by: Cynthia ...

  18. Vision problems

    MedlinePlus

    ... which nothing can be seen) Vision loss and blindness are the most severe vision problems. Causes Vision ... that look faded. The most common cause of blindness in people over age 60. Eye infection, inflammation, ...

  19. Swallowing problems

    MedlinePlus

    ... the home Dry mouth during cancer treatment Enteral nutrition - child - managing problems Gastrostomy feeding tube - bolus Jejunostomy feeding tube Mouth and neck radiation - discharge Multiple sclerosis - discharge Stroke - discharge Update Date 5/15/2014 ...

  20. Speech Problems

    MedlinePlus

    ... a person's ability to speak clearly. Some Common Speech Disorders Stuttering is a problem that interferes with fluent ... is a language disorder, while stuttering is a speech disorder. A person who stutters has trouble getting out ...