Sample records for alternative work schedules

  1. Alternative Work Schedules Increase Employee Satisfaction.

    Turney, John R.; Cohen, Stanley L.


    Facets of alternative work schedules (AWS) are discussed: importance of employee control, possible negative consequences, AWS handbook, time monitoring systems, and treatment of exceptions. AWS' effect on productivity and motivation is examined. (SK)

  2. Flexible Workplace Policies: Lessons from the Federal Alternative Work Schedules Act

    Liechty, Janet M.; Anderson, Elaine A.


    This case study uses a feminist framework to examine the 7-year process by which the Federal Alternative Work Schedules Act (1978-1985) became law and the reasons for reenergized implementation in the 1990s. We analyze the legislative discourse for rationale in support of and opposition to this policy, connect findings to current flexible work…

  3. "Creative" Work Schedules.

    Blai, Boris

    Many creative or flexible work scheduling options are becoming available to the many working parents, students, handicapped persons, elderly individuals, and others who are either unable or unwilling to work a customary 40-hour work week. These options may be broadly categorized as either restructured or reduced work time options. The three main…

  4. University employees work schedule

    Basagoiti Alcázar, Javier


    The aim of this project is to create a website which is useful both employees and students of a university, so employees can add information, if they log in with username and password access, and students can view this information . Employees may modify and display information such as title, room, or their faculty (from a list defined by the administrator), and most importantly, their schedule, whether class, tutoring, free time, or any of tasks that the administrator define. There will be a ...

  5. Flexible Schedules and Shift Work.

    Beers, Thomas M.


    Flexible work hours have gained prominence, as more than 25 million workers (27.6% of all full-time workers) can now vary their schedules. However, there has been little change since the mid-1980s in the proportion who work a shift other than a regular daytime shift. (JOW)

  6. The effects of work-reinforcer schedules on skill acquisition for children with autism.

    Kocher, Colleen P; Howard, Monica R; Fienup, Daniel M


    This study evaluated the effects of continuous and discontinuous work-reinforcer schedule arrangements on skill acquisition for three students with autism. Participants were initially exposed to both schedules in an alternating schedules condition where they were taught different but equivalent skills for each schedule. In the discontinuous schedule condition, participants completed work in small increments to gain access to a reinforcer for short periods of time. In the continuous schedule condition, participants completed larger increments of work to gain longer access to a reinforcer. Results showed that two participants mastered the target responses with both schedules and the third participant only met mastery criterion with the continuous schedule. Preference for schedules varied across participants. Session duration was consistently shorter during the continuous work-reinforcer schedule, suggesting that continuous work-reinforcer schedules are more efficient. Participants engaged with the reinforcer less when provided longer access, suggesting that reinforcer access might be reduced with continuous schedules for further efficiency gains. PMID:25896361

  7. Prioritizing sleep for healthy work schedules

    Takahashi Masaya


    Full Text Available Abstract Good sleep is advantageous to the quality of life. Sleep-related benefits are particularly helpful for the working class, since poor or inadequate amounts of sleep degrade work productivity and overall health. This review paper explores the essential role of sleep in healthy work schedules and primarily focuses on the timing of sleep in relation to the work period (that is, before, during and after work. Data from laboratory, field and modeling studies indicate that consistent amounts of sleep prior to work are fundamental to improved performance and alertness in the workplace. In addition, planned naps taken during work maintain appropriate levels of waking function for both daytime and night-time work. Clearly, sufficient sleep after work is vital in promoting recovery from fatigue. Recent data also suggest that the time interval between shifts should be adjusted according to the biological timing of sleep. Although sleep is more likely to be replaced by job and other activities in the real life, research shows that it is worthwhile to revise the work schedules in order to optimize sleep before, sometime during and after the work period. Therefore, we suggest establishing work-sleep balance, similar to work-life balance, as a principle for designing and improving work schedules.

  8. Improved human performance through appropriate work scheduling

    The Nuclear Regulatory Commission (NRC) has had a policy, Generic Letter 82-12, on hours of work since 1982. The policy states that licensees should establish controls to prevent situations where fatigue could reduce the ability of operating personnel to perform their duties safely (USNRC 1982). While that policy does give guidance on hours of work and overtime, it does not address periods of longer than 7 days or work schedules other than the routine 8-hour day, 40-hour week. Recognizing that NRC policy could provide broader guidance for shift schedules and hours of overtime work, the Division of Human Factors Safety conducted a project with Pacific Northwest Laboratories (PNL) to help the NRC better understand the human factors principles and issues concerning hours of work so that the NRC could consider updating their policy as necessary. The results of this project are recommendations for guidelines and limits for periods of 14 days, 28 days, and 1 year to take into account the cumulative effects of fatigue. In addition, routine 12-hour shifts are addressed. This latter type of shift schedule has been widely adopted in the petroleum and chemical industries and several utilities operating nuclear power plants have adopted it as well. Since this is the case, it is important to consider including guidelines for implementing this type of schedule. This paper discusses the bases for the PNL recommendations which are currently being studied by the NRC

  9. The Growing Diversity of Work Schedules.

    Smith, Shirley J.


    The author highlights the predominance of the five-day, 40-hour workweek. Although finding little change in recent years in the proportion of workers on 40-hour schedules, Smith notes that there have been some changes in work patterns, with a still small but growing group of workers on "compressed" full-time weeks of less than five days. (CT)


    Vanhoucke, M.


    Repetitive projects involve the repetition of activities along the stages of the project. Since the resources required to perform these activities move from one stage to the other, a main objective of scheduling these projects is to maintain the continuity of work of these resources so as to minimize the idle time of resources. This requirement, often referred to as work continuity constraints, involves a trade-off between total project duration and the resource idle time. The contribution of...

  11. Parental Work Schedules and Adolescent Risky Behaviors

    Han, Wen-Jui; Miller, Daniel P.; Waldfogel, Jane


    Using a large contemporary data set, the National Longitudinal Survey of Youth-Child Supplement (NLSY-CS), this paper examines the effects of parental work schedules on adolescent risky behaviors at age 13 or 14 and the mechanisms that might explain them. Structural equation modeling suggests mothers who worked more often at night spent significantly less time with children and had lower quality home environments, and these mediators were significantly linked to adolescent r...

  12. 48 CFR 1352.271-73 - Schedule of work.


    ... of work. As prescribed in 48 CFR 1371.104, insert the following clause. Schedule of Work (APR 2010... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Schedule of work. 1352.271... arrival at the contractor's facility: (1) Production Schedule. (2) Work Package Network. (3)...

  13. Effects of Reinforcer Magnitude and Distribution on Preference for Work Schedules

    Ward-Horner, John C.; Pittenger, Alexis; Pace, Gary; Fienup, Daniel M.


    When the overall magnitude of reinforcement is matched between 2 alternative work schedules, some students prefer to complete all of their work for continuous access to a reinforcer (continuous work) rather than distributed access to a reinforcer while they work (discontinuous work). We evaluated a student's preference for continuous work by…

  14. Work schedules and fatigue: a prospective cohort study

    Jansen, N; van Amelsvoort, L G P M; Kristensen, T; van den Brandt, P.A.; Kant, I.


    Aims: (1) To describe the prevalence of fatigue among employees in different work schedules (day work, three-shift, five-shift, and irregular shift work); (2) to investigate whether different work schedules are related to increasing fatigue over time, while taking into account job title and job characteristics; and (3) to study fatigue among shift workers changing to day work.

  15. 5 CFR 532.513 - Flexible and compressed work schedules.


    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Flexible and compressed work schedules... REGULATIONS PREVAILING RATE SYSTEMS Premium Pay and Differentials § 532.513 Flexible and compressed work schedules. Federal Wage System employees who are authorized to work flexible and compressed work...

  16. Non-Work Activity Scheduling Effects in the Timing of Work Trips

    Picado, Rosella


    This dissertation examines the effect of work and non-work scheduling flexibility on the timing of work trips. It explores whether increasing activity scheduling flexibility, whether due to work or non-work factors, results in non-peak travel and hence shorter travel times. It examines in detail work scheduling flexibility, non-work scheduling flexibility, and travel time characteristics. An examination of trip timing choices using data from the 1990 Bay Area Travel Survey showed tha...

  17. 48 CFR 1371.104 - Schedule of work.


    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Schedule of work. 1371.104 Section 1371.104 Federal Acquisition Regulations System DEPARTMENT OF COMMERCE DEPARTMENT SUPPLEMENTAL... of work. Insert clause 1352.271-73, Schedule of Work, in all solicitations and contracts for...

  18. 5 CFR 610.121 - Establishment of work schedules.


    ... than 1 week; (2) The basic 40-hour workweek is scheduled on 5 days, Monday through Friday when possible... determined that the head of the agency: (i) Had knowledge of the specific days and hours of the work... employee had to be scheduled, or rescheduled, to meet the specific days and hours of that work...

  19. Job shop scheduling problem with late work criterion

    Piroozfard, Hamed; Wong, Kuan Yew


    Scheduling is considered as a key task in many industries, such as project based scheduling, crew scheduling, flight scheduling, machine scheduling, etc. In the machine scheduling area, the job shop scheduling problems are considered to be important and highly complex, in which they are characterized as NP-hard. The job shop scheduling problems with late work criterion and non-preemptive jobs are addressed in this paper. Late work criterion is a fairly new objective function. It is a qualitative measure and concerns with late parts of the jobs, unlike classical objective functions that are quantitative measures. In this work, simulated annealing was presented to solve the scheduling problem. In addition, operation based representation was used to encode the solution, and a neighbourhood search structure was employed to search for the new solutions. The case studies are Lawrence instances that were taken from the Operations Research Library. Computational results of this probabilistic meta-heuristic algorithm were compared with a conventional genetic algorithm, and a conclusion was made based on the algorithm and problem.


    Bocean, Claudiu George; Catalina Soriana SITNIKOV


    Flexible work arrangements should focus on providing employees with more options for when and how they do their work. Organizations can provide a suite of flexible options to enable employees to choose the arrangements that best balance their work with family and lifestyle preferences. In this paper we intended to investigate the flexibilization process of working time determined by the new trends of work organization. For this purpose, the various aspects of working time in a company were an...

  1. Inspector General audit report on Transportation Safeguards Division courier work schedules and escort vehicle replacements



    The Office of Inspector General`s (OIG) April 1995 report found that couriers received too much overtime and incurred too much unproductive time. This finding occurred because the Transportation Safeguards Division (TSD) employed a traditional work schedule that did not meet the demands of the job. The report recommended implementing an alternative work schedule that corresponded more closely to the couriers` actual work requirements. Management agreed to conduct a comparative analysis of work schedules to evaluate potential savings. The objectives of this audit were to (1) follow up on actions taken as a result of the OIG`s previous report, (2) determine if courier work schedules are cost effective, and (3) determine the cost effectiveness of escort vehicle replacements. The authors recommend: (1) implementing an alternative work schedule for courier which would achieve savings in overtime and unproductive time, while efficiently and cost effectively fulfilling TSD`s mission; (2) reexamining and adjusting the staffing level of each courier section in relation to the workload requirements in the area; and (3) discontinuing payment for travel time between courier lodging and temporary duty stations. The Albuquerque Operations Office agreed with the auditor`s findings and recommendations.

  2. Optimal scheduling of logistical support for an emergency roadway repair work schedule

    Yan, S.; Lin, C. K.; Chen, S. Y.


    The completion of every disaster rescue task performed by repair work teams relies on the in-time supply of materials to the rescue workers. Up to now, logistical support planning for emergency repair work in Taiwan has been done manually, which is neither effective nor efficient. To remedy the problem, this study presents a logistical support scheduling model for the given emergency repair work schedule. The objective is to minimize the short-term operating cost subject to time constraints and other related operating constraints. This model is formulated as an integer multiple-commodity network flow problem which is characterized as NP-hard. A heuristic algorithm, based on the problem decomposition and variable fixing techniques, is also proposed to efficiently solve this problem. Computational tests are performed using data from Taiwan's 1999 Chi-Chi earthquake. The results show that the model and the solution algorithm would be useful for the logistical support scheduling.

  3. 5 CFR 610.407 - Premium pay for holiday work for employees on compressed work schedules.


    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Premium pay for holiday work for employees on compressed work schedules. 610.407 Section 610.407 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS HOURS OF DUTY Flexible and Compressed Work Schedules § 610.407...

  4. Alternative Scheduling Models and Their Effect on Science Achievement at the High School Level

    Dostal, Jay Roland


    This study will evaluate alternative scheduling methods implemented in secondary level schools. Students were selected based on parent selection of programs. Traditional scheduling involves numerous academic subjects with small increments of time in each class and block scheduling focuses on fewer academic subjects and more instructional time.…

  5. A Comparison of Dense-to-Lean and Fixed Lean Schedules of Alternative Reinforcement and Extinction

    Hagopian, Louis P.; Toole, Lisa M.; Long, Ethan S.; Bowman, Lynn G.; Lieving, Gregory A.


    Behavior-reduction interventions typically employ dense schedules of alternative reinforcement in conjunction with operant extinction for problem behavior. After problem behavior is reduced in the initial treatment stages, schedule thinning is routinely conducted to make the intervention more practical in natural environments. In the current…

  6. Working from 9 to 6? An analysis of in-home and out-of-home working schedules

    Alexander, Bayarma; Dijst, M.J.; Ettema, D.F.


    The widespread adoption of information and communication technologies (ICT) and flexible work arrangements have enabled people to schedule their work activities in more flexible ways. New forms of working have already emerged. However, research about flexible work schedules is still scarce. The aim of this study is to determine the factors impacting the propensity to adopt a flexible work schedule, and establish how and to what extent the timing of work is influenced by ICTs, work, and sociod...

  7. The Effects of Work-Reinforcer Schedules on Performance and Preference in Students with Autism

    Bukala, Magdalena; Hu, Meng Yao; Lee, Ronald; Ward-Horner, John C.; Fienup, Daniel M.


    This study investigated performance under and preference for continuous and discontinuous work-reinforcer schedules in 3 students who had been diagnosed with autism. Under continuous schedules, participants completed all work and consumed all reinforcers in contiguous units. Under discontinuous schedules, work and reinforcer access were broken up…

  8. 5 CFR 610.405 - Holiday for part-time employees on flexible work schedules.


    ... flexible work schedules. 610.405 Section 610.405 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS HOURS OF DUTY Flexible and Compressed Work Schedules § 610.405 Holiday for part-time employees on flexible work schedules. If a part-time employee is relieved or prevented...

  9. PHENIX Work Breakdown Structure. Cost and schedule review copy


    The Work Breakdown Structure (WBS) Book begins with this Overview section, which contains the high-level summary cost estimate, the cost profile, and the global construction schedule. The summary cost estimate shows the total US cost and the cost in terms of PHENIX construction funds for building the PHENIX detector. All costs in the WBS book are shown in FY 1993 dollars. Also shown are the institutional and foreign contributions, the level of pre-operations funding, and the cost of deferred items. Pie charts are presented at PHENIX WBS level 1 and 2 that show this information. The PHENIX construction funds are shown broken down to PHENIX WBS level 3 items per fiscal year, and the resulting profile is compared to the RHIC target profile. An accumulated difference of the two profiles is also shown. The PHENIX global construction schedule is presented at the end of the Overview section. Following the Overview are sections for each subsystem. Each subsystem section begins with a summary cost estimate, cost profile, and critical path. The total level 3 cost is broken down into fixed costs (M&S), engineering costs (EDIA) and labor costs. Costs are further broken down in terms of PHENIX construction funds, institutional and foreign contributions, pre-operations funding, and deferred items. Also shown is the contingency at level 3 and the level 4 breakdown of the total cost. The cost profile in fiscal years is shown at level 3. The subsystem summaries are followed by the full cost estimate and schedule sheets for that subsystem. These detailed sheets are typically carried down to level 7 or 8. The cost estimate shows Total, M&S, EDIA, and Labor breakdowns, as well as contingency, for each WBS entry.

  10. Helping Children Understand Routines and Classroom Schedules. What Works Briefs.

    Ostrosky, M. M.; Jung, E. Y.; Hemmeter, M. L.; Thomas, D.

    Studies have documented that schedules and routines influence children's emotional, cognitive, and social development. Predictable and consistent schedules in preschool classrooms help children feel secure and comfortable. Also, schedules and routines help children understand the expectations of the environment and reduce the frequency of behavior…

  11. Work and citizenship: crises and alternatives

    Kovács, Ilona


    One purpose of this article is to refute some commonly held ideas which consider that ongoing changes in work and employment are inevitable and they have positive consequences at the social and individual level. It is subjacent on approach considering that there is no single striking trend while there are alternatives deserving discussion. The paper starts with analysis on the crises in the Fordist-Keynesian employment regime, the basis of our modern social citizenship. There is no consensus ...

  12. Breaking the Time Barrier: Algebra Instruction in an Alternate-Day Block Schedule

    Wright, Vella S.


    ABSTRACT Over half of the high schools in Virginia utilized a block schedule in 1996-97. With an extended block of time, teachers have the opportunity to vary instruction to incorporate a range of strategies to enhance student engagement and increase student achievement. The purpose of this study is to provide a detailed description of algebra instruction in an extended alternate-day block schedule. Using case study methodology, data were gathered from six algebra teachers' classrooms. ...

  13. Working from 9 to 6? An analysis of in-home and out-of-home working schedules

    Alexander, Bayarma; Dijst, M.J.; Ettema, D.F.


    The widespread adoption of information and communication technologies (ICT) and flexible work arrangements have enabled people to schedule their work activities in more flexible ways. New forms of working have already emerged. However, research about flexible work schedules is still scarce. The aim

  14. SafeTREC - UCTC Seminar: Flexible Work Schedules and Transportation Behavior at UC Berkeley

    Ng, Wei-Shiuen


    Flexible work schedules could be a solution to the problems of increasing transportation demand, congestion, energy use, and carbon emissions. The higher the flexibility of work schedule, the less time employees would spend commuting to work. Hence, reducing trip frequency and total distance traveled. Flexible work schedules have been studied extensively in transportation studies, especially in areas of peak period congestion, road pricing, transit services peak and off-peak utilization, and ...

  15. Impact of flexible scheduling on employee performance regarding stress and work-family conflict

    Raja Abdul Ghafoor Khan; Furqan Ahmad Khan; Dr. Muhammad Aslam Khan; Mohsin Shakeel


    Stress, work-family conflicts and flexible scheduling are three of the most important elements in organizational studies. The focus of current study is to understand the effect of Stress,work family conflicts and flexible scheduling on employee’s performance and also to understand whether flexible scheduling helps in reducing stress and work-family conflicts or not. The back bone of this study is the secondary data comprised of comprehensive literature review. A survey has also been conducted...

  16. Demystifying Alternative Education: Considering What Really Works

    Powell, Diane E.


    The effectiveness of alternative programs requires an understanding of both research and practice. Essential components of alternative educational programs must include opportunities to build and foster resilience in our youth. Program elements must be reflective of the quality and standards mandated by the "No Child Left Behind Act of 2001."…

  17. The Impact of Utilizing a Flexible Work Schedule on the Perceived Career Advancement Potential of Women

    Rogier, Sara A.; Padgett, Margaret Y.


    This study examined whether a woman working a flexible schedule would be perceived as having less career advancement potential than a woman on a regular schedule. Participants reviewed a packet of materials simulating the personnel file of a female employee in an accounting firm who was seeking promotion from manager to senior manager. Results…

  18. Making a Non-animal Alternative Work.

    Zawistowski, Stephen


    Described is the author's decision to help a student find alternatives to performing several terminal experiments on animals in a college physiology class. Replacement exercises used for studying the properties of muscle types are described. Details about the difficulties and successes of the entire experience are reported. (KR)

  19. The impact of changing work schedules on American firefighters’ sleep patterns and well-being

    Kristin M Salottolo


    Full Text Available Across the nation, fire departments are adopting the 48/96 work schedule, in which firefighters work 48 consecutive hours with the following 96 hours off. Our study objective was to explain and quantify the impact of switching from the Kelly schedule to the 48/96 schedule by measuring changes in sleep, feelings of daytime function, as well as perceptions of professional and personal well-being for American firefighters. Sleep diaries and self-reported surveys were administered to firefighters at an urban fire department. Sleep diaries measuring the number of hours slept and feelings of refreshment were compared one month before and four months after implementation of the 48/96 schedule. The self-reported surveys measured sleepiness levels via the Epworth Sleepiness Scale. Secondary study objectives included changes in professional and personal well-being time for personal schedules, satisfaction, and health habits before and after the 48/96 schedule was implemented. The 59 firefighters included in the study reported an increase in sleep on-shift after the new schedule implementation (5.8 to 6.6 hours/night, p < 0.001. Participants also reported increased feelings of refreshment on days off (p < 0.001 and decreased daytime sleepiness (p < 0.001. We also found a general trend of improved perceptions of satisfaction, less shift interference with personal schedules and decreased feelings of burnout. American firefighters appeared to benefit from a 48/96 schedule, with short-term improvements in sleep patterns, feelings of burnout, and time for personal schedules.

  20. Magnitude of Construction Cost and Schedule Overruns in Public Work Projects

    Pramen P. Shrestha; Burns, Leslie A.; David R. Shields


    This study analyzed 363 Clark County Department of Public Works (CCDPW) projects to determine construction cost and schedule overruns in various types and sizes of the projects. The sample projects were constructed from 1991 to 2008, with a total construction cost of $1.85 billion, equivalent to 2012 cost. A one-factor ANOVA test was conducted to determine whether construction cost and schedule overruns significantly varied based on types and sizes of the projects. The study showed that lar...

  1. Non-standard work schedules, gender, and parental stress

    Lozano, M.; Hamplová, Dana; Le Bourdais, C.


    Roč. 34, č. 9 (2016), s. 259-284. ISSN 1435-9871 R&D Projects: GA ČR(CZ) GA14-15008S Institutional support: RVO:68378025 Keywords : stress * employment * non-standard work hours Subject RIV: AO - Sociology, Demography Impact factor: 1.181, year: 2014

  2. Flexible Work Schedules: What Are We Trading off To Get Them?

    Golden, Lonnie


    Flexible work schedules have more than doubled since 1985, but workers sometimes must be willing to increase their hours, work evening shifts, or switch to part-time status, self-employment, or certain occupations to get flexibility. Flexibility was less likely for nonwhite, female, unmarried, and less-educated workers. (Contains 38 notes and…

  3. Optimal Work Shift Scheduling with Fatigue Minimization and Day Off Preferences

    Ta-Chung Wang; Cheng-Che Liu


    Shift work disrupts the sleep-wake cycle, leading to sleepiness, fatigue, and performance impairment, with implications for occupational health and safety. For example, aircraft maintenance crew work a 24-hour shift rotation under the job stress of sustaining the flight punctuality rate. If an error occurs during the aircraft maintenance process, this error may become a potential risk factor for flight safety. This paper focuses on optimal work shift scheduling to reduce the fa...

  4. Efficient Work Team Scheduling: Using Psychological Models of Knowledge Retention to Improve Code Writing Efficiency

    Michael J. Pelosi


    Full Text Available Development teams and programmers must retain critical information about their work during work intervals and gaps in order to improve future performance when work resumes. Despite time lapses, project managers want to maximize coding efficiency and effectiveness. By developing a mathematically justified, practically useful, and computationally tractable quantitative and cognitive model of learning and memory retention, this study establishes calculations designed to maximize scheduling payoff and optimize developer efficiency and effectiveness.

  5. Work-family conflict and enrichment from the perspective of psychosocial resources: comparing Finnish healthcare workers by working schedules.

    Mauno, Saija; Ruokolainen, Mervi; Kinnunen, Ulla


    We examined work-family conflict (WFC) and work-family enrichment (WFE) by comparing Finnish nurses, working dayshifts (non-shiftworkers, n = 874) and non-dayshifts. The non-dayshift employees worked either two different dayshifts (2-shiftworkers, n = 490) or three different shifts including nightshifts (3-shiftworkers, n = 270). Specifically, we investigated whether different resources, i.e. job control, managers' work-family support, co-workers' work-family support, control at home, personal coping strategies, and schedule satisfaction, predicted differently WFC and WFE in these three groups. Results showed that lower managers' work-family support predicted higher WFC only among 3-shiftworkers, whereas lower co-workers' support associated with increased WFC only in non-shiftworkers. In addition, shiftworkers reported higher WFC than non-shiftworkers. However, the level of WFE did not vary by schedule types. Moreover, the predictors of WFE varied only very little across schedule types. Shiftwork organizations should pay more attention to family-friendly management in order to reduce WFC among shiftworkers. PMID:25683534

  6. A Method to design job rotation schedules to prevent work-related musculoskeletal disorders in repetitive work

    Asensio-Cuesta, Sabina; Diego-Mas, J.A.; Cremades Oliver, Lázaro Vicente; González-Cruz, M.C.


    Job rotation is an organisational strategy widely used in human-based production lines with the aim of preventing work-related musculoskeletal disorders (WMSDs). These work environments are characterised by the presence of a high repetition of movements, which is a major risk factor associated with WMSDs. This article presents a genetic algorithm to obtain rotation schedules aimed at preventing WMSDs in such environments. To do this, it combines the effectiveness of genetic algori...

  7. Nonstandard Schedules and Young Children's Behavioral Outcomes among Working Low-Income Families

    Joshi, Pamela; Bogen, Karen


    This article focuses on how maternal employment in nonstandard schedules at night, on the weekends, or that rotate on a weekly basis influence preschoolers' behavioral outcomes. Examining low-income working mothers and their children aged 2-4 years from the Welfare, Children, and Families: A Three-City Study (N = 206), we find that maternal…

  8. Mothers’ non-standard working schedules and family time : enhancing regularity and togetherness

    Murtorinne-Lahtinen, Minna; Moilanen, Sanna; Tammelin, Mia; Rönkä, Anna; Laakso, Marja-Leena


    Purpose – The purpose of this paper is to investigate Finnish working mothers’ experiences of the effects of non-standard working schedules (NSWS) on family time in two family forms, coupled and lone-parent families. Furthermore the aim is to find out what meanings mothers with NSWS attached to family time paying particular attention to the circumstances in which mothers experienced NSWS positively. Design/methodology/approach – Thematic analysis of 20 semi-structured interviews was...

  9. An adaptive ant colony optimization framework for scheduling environmental flow management alternatives under varied environmental water availability conditions

    Szemis, J. M.; Maier, H. R.; Dandy, G. C.


    Human water use is increasing and, as such, water for the environment is limited and needs to be managed efficiently. One method for achieving this is the scheduling of environmental flow management alternatives (EFMAs) (e.g., releases, wetland regulators), with these schedules generally developed over a number of years. However, the availability of environmental water changes annually as a result of natural variability (e.g., drought, wet years). To incorporate this variation and schedule EFMAs in a operational setting, a previously formulated multiobjective optimization approach for EFMA schedule development used for long-term planning has been modified and incorporated into an adaptive framework. As part of this approach, optimal schedules are updated at regular intervals during the planning horizon based on environmental water allocation forecasts, which are obtained using artificial neural networks. In addition, the changes between current and updated schedules can be minimized to reduce any disruptions to long-term planning. The utility of the approach is assessed by applying it to an 89km section of the River Murray in South Australia. Results indicate that the approach is beneficial under a range of hydrological conditions and an improved ecological response is obtained in a operational setting compared with previous long-term approaches. Also, it successfully produces trade-offs between the number of disruptions to schedules and the ecological response, with results suggesting that ecological response increases with minimal alterations required to existing schedules. Overall, the results indicate that the information obtained using the proposed approach potentially aides managers in the efficient management of environmental water.

  10. Alternatives to Industrial Work Placement at Dublin Institute of Technology

    Bates, Catherine; Gamble, Elena


    In the current economic crisis, higher education graduates need transferable professional skills more than ever. They need resourcefulness, an ability to work reflectively, a sense of civic awareness and an impressive curriculum vitae. This case study analyses how Dublin Institute of Technology’s Programme for Students Learning With Communities provides cost-effective, sustainable solutions to these needs, offering an alternative to industrial work placement. Community-based learning and rese...

  11. Effect of alternative temozolomide schedules on glioblastoma O 6-methylguanine-DNA methyltransferase activity and survival

    Robinson, C G; Palomo, J M; Rahmathulla, G; McGraw, M; Donze, J; L. Liu; Vogelbaum, M A


    Background: O 6-methylguanine-DNA methyltransferase (MGMT) expression in glioblastoma correlates with temozolomide resistance. Dose-intense temozolomide schedules deplete MGMT activity in peripheral blood mononuclear cells; however, no published data exist evaluating the effect of temozolomide schedules on intracranial tumour MGMT activity. Methods: Human glioblastoma cells (GBM43) with an unmethylated MGMT promoter were implanted intracranially in immunodeficient rodents. Three weeks later, ...


    Vanhoucke, M.; K. VAN OSSELAER


    The scheduling of projects has gained increasing attention since the introduction of PERT and CPM. Both the scheduling literature and the software scheduling packages rely on heuristic and optimal procedures to schedule projects under various assumptions. However, there is still room for improvement by incorporating specific characteristics into the scheduling procedures. In this paper we describe the scheduling of a real-life project that aims at the construction of a tunnel at the Westersch...

  13. Working mothers see penalties when they adjust work schedules after having children

    Kmec, Julie A.; O’Connor, Lindsey Trimble; Schieman, Scott


    President Obama’s State of the Union address last month recognized that working women—and men—should not face hardship for taking care of their family responsibilities. Recent research by sociologists, Julie A. Kmec, Lindsey Trimble O’Connor and Scott Schieman suggests that workplaces have a long way to go before realizing the President’s message. In new research, they find that working mothers perceive penalties—like feeling ignored and that they are given the worst tasks—when they adjust t...

  14. Clinical outcome of an alternative fotemustine schedule in elderly patients with recurrent glioblastoma: a mono-institutional retrospective study.

    Lombardi, Giuseppe; Bellu, Luisa; Pambuku, Ardi; Della Puppa, Alessandro; Fiduccia, Pasquale; Farina, Miriam; D'Avella, Domenico; Zagonel, Vittorina


    The optimal treatment of recurrent glioblastoma (GBM) in elderly patients is unclear. Fotemustine (FTM) is a third-generation nitrosourea showing efficacy in gliomas and it has been used with different schedules in adult patients. We performed, for the first time anywhere, a mono-institutional retrospective study to analyze the clinical outcome of an alternative fotemustine schedule in elderly patients with recurrent GBM. Retrospectively, we analyzed all GBM patients 65 years or older previously treated with the combination of radiation therapy and temozolomide (TMZ), receiving an alternative FTM schedule as second-line treatment at our Oncological Center from October 2011 to October 2014 with an ECOG PS ≤ 2. FTM was administrated at 80 mg/m(2) every 2 weeks for five consecutive administrations (induction phase), and then every 4 weeks at 80 mg/m(2) as maintenance. We enrolled 44 patients, 33 males and 11 females; average age was 70 years. ECOG PS was 0-1 in 80 % of the patients. 38 patients relapsed during temozolomide (TMZ) therapy. MGMT methylation status was analyzed in 34 patients and MGMT was methylated in 53 % of the patients. The median progression free survival (PFS) and overall survival (OS) from FTM treatment was 4.1 months (95 % CI 3.1-5.2) and 7 months (95 % CI 5.2-8.4), respectively. Patients with MGMT methylated status and patients who relapsed after completing TMZ therapy had a longer PFS and OS from the beginning of FTM. Thrombocytopenia was the most frequent grade 3-4 haematological toxicity (9 %). The alternative schedule of FTM may be an active and safe treatment for elderly patients with recurrent glioblastoma, especially patients with methylated MGMT and who relapsed after completing temozolomide therapy. PMID:27165580

  15. Optimization for vehicle scheduling in iron and steel works based on semi-trailer swap transport

    CHENG Yao-rong; LIANG Bo; ZHOU Mei-hua


    In order to solve internal logistics problems of iron and steel works,such as low transportation efficiency of cehicles and high transportation cost,the production process and traditional transportation style of iron and steel work were introduced.The internal transport tasks of iron and steel works were grouped based on cluster analysis according to demand time of the transportation. An improved vehicle scheduling model of semi-trailer swap transport among loading nodes and unloading nodes in one task group was set up.The algorithm was designed to silve the vehicle routing problem with simultaneous pick-up and delivery (CRPSPD)problem based on semi-trailer swap transport.A solving program was written by MATLAB software and the method to figure out the optimal path of each grouping was obtainde.The dropping and pulling transportation plan of the tractor wan designed.And an decerase the numbers of semi-trailer swap transport in iron and steel works was given.The results indicate that semi-trailer swap transport can steel works,and the total distance traveled reduces by 43.5%.The semi-trailer swap transport can help the iron and steel works develop the productiong in intension.

  16. Control over the Scheduling of Simulated Office Work Reduces the Impact of Workload on Mental Fatigue and Task Performance

    Hockey, G. Robert J.; Earle, Fiona


    Two experiments tested the hypothesis that task-induced mental fatigue is moderated by control over work scheduling. Participants worked for 2 hr on simulated office work, with control manipulated by a yoking procedure. Matched participants were assigned to conditions of either high control (HC) or low control (LC). HC participants decided their…

  17. Meta-heuristic algorithms for parallel identical machines scheduling problem with weighted late work criterion and common due date.

    Xu, Zhenzhen; Zou, Yongxing; Kong, Xiangjie


    To our knowledge, this paper investigates the first application of meta-heuristic algorithms to tackle the parallel machines scheduling problem with weighted late work criterion and common due date ([Formula: see text]). Late work criterion is one of the performance measures of scheduling problems which considers the length of late parts of particular jobs when evaluating the quality of scheduling. Since this problem is known to be NP-hard, three meta-heuristic algorithms, namely ant colony system, genetic algorithm, and simulated annealing are designed and implemented, respectively. We also propose a novel algorithm named LDF (largest density first) which is improved from LPT (longest processing time first). The computational experiments compared these meta-heuristic algorithms with LDF, LPT and LS (list scheduling), and the experimental results show that SA performs the best in most cases. However, LDF is better than SA in some conditions, moreover, the running time of LDF is much shorter than SA. PMID:26702371

  18. Alternative Modelling Approach to Spatial Harvest Scheduling with Respect to Fragmentation of Forest Ecosystem

    Marušák, Róbert; Kašpar, Jan; Hlavatý, Robert; Kotek, Václav; Kuželka, Karel; Vopěnka, Petr


    Fragmentation of the forests affects forest ecosystems by changing the composition, shape, and configuration of the resulting patches. Subsequently, the prevailing conditions vary between patches. The exposure to the sun decreases from the patch boundary to the patch interior and this forms core and edge areas within each patch. Forest harvesting and, in particular, the clear-cut management system which is still preferred in many European countries has a significant impact on forest fragmentation. There are many indices of measuring fragmentation: non-spatial and spatial. The non-spatial indices measure the composition of patches, while the spatial indices measure both the shape and configuration of the resulting patches. The effect of forest harvesting on fragmentation, biodiversity, and the environment is extensively studied; however, the integration of fragmentation indices in the harvest scheduling model is a new, novel approach. This paper presents a multi-objective integer model of harvest scheduling for clear-cut management system and presents a case study demonstrating its use. Harvest balance and sustainability are ensured by the addition of constraints from the basic principle of the regulated forest model. The results indicate that harvest balance and sustainability can be also achieved in minimizing fragmentation of forest ecosystems. From the analyses presented in this study, it can be concluded that integration of fragmentation into harvest scheduling can provide better spatial structure. It depends on the initial spatial and age structure. It was confirmed that it is possible to find compromise solution while minimizing fragmentation and maximizing harvested area.

  19. Anatomy of Alternating Quantifier Satisfiability (Work in progress)

    Dung, Phan Anh; Bjørner, Nikolaj; Monniaux, David

    eliminating or partially eliminating quantifiers. We also apply the algorithm for Presburger Arithmetic formulas and evaluate it on formulas from a model checker for Duration Calculus [8]. We report on experiments on different variants of the auxiliary procedures. So far, there is an edge to applying SMT......We report on work in progress to generalize an algorithm recently introduced in [10] for checking satisfiability of formulas with quantifier alternation. The algorithm uses two auxiliary procedures: a procedure for producing a candidate formula for quantifier elimination and a procedure for......-TEST proposed in [10], while we found that a simpler approach which just eliminates quantified variables per round is almost as good. Both approaches offer drastic improvements to applying default quantifier elimination....

  20. A Work-Demand Analysis Compatible with Preemption-Aware Scheduling for Power-Aware Real-Time Tasks

    Da-Ren Chen


    Full Text Available Due to the importance of slack time utilization for power-aware scheduling algorithms,we propose a work-demand analysis method called parareclamation algorithm (PRA to increase slack time utilization of the existing real-time DVS algorithms. PRA is an online scheduling for power-aware real-time tasks under rate-monotonic (RM policy. It can be implemented and fully compatible with preemption-aware or transition-aware scheduling algorithms without increasing their computational complexities. The key technique of the heuristics method doubles the analytical interval and turns the deferrable workload out the potential slack time. Theoretical proofs show that PRA guarantees the task deadlines in a feasible RM schedule and takes linear time and space complexities. Experimental results indicate that the proposed method combining the preemption-aware methods seamlessly reduces the energy consumption by 14% on average over their original algorithms.

  1. Location-based Scheduling

    Andersson, Niclas; Christensen, Knud

    the predominant scheduling method since it was introduced in the late 1950s. Over the years, CPM has proven to be a very powerful technique for planning, scheduling and controlling projects, which among other things is indicated by the development of a large number of CPM-based software applications available...... on the market. However, CPM is primarily an activity based method that takes the activity as the unit of focus and there is criticism raised, specifically in the case of construction projects, on the method for deficient management of construction work and continuous flow of resources. To seek solutions...... to the identified limitations of the CPM method, an alternative planning and scheduling methodology that includes locations is tested. Location-based Scheduling (LBS) implies a shift in focus, from primarily the activities to the flow of work through the various locations of the project, i.e. the building. LBS uses...

  2. Humoral and Cell-Mediated Immune Responses to Alternate Booster Schedules of Anthrax Vaccine Adsorbed in Humans.

    Quinn, Conrad P; Sabourin, Carol L; Schiffer, Jarad M; Niemuth, Nancy A; Semenova, Vera A; Li, Han; Rudge, Thomas L; Brys, April M; Mittler, Robert S; Ibegbu, Chris C; Wrammert, Jens; Ahmed, Rafi; Parker, Scott D; Babcock, Janiine; Keitel, Wendy; Poland, Gregory A; Keyserling, Harry L; El Sahly, Hana; Jacobson, Robert M; Marano, Nina; Plikaytis, Brian D; Wright, Jennifer G


    Protective antigen (PA)-specific antibody and cell-mediated immune (CMI) responses to annual and alternate booster schedules of anthrax vaccine adsorbed (AVA; BioThrax) were characterized in humans over 43 months. Study participants received 1 of 6 vaccination schedules: a 3-dose intramuscular (IM) priming series (0, 1, and 6 months) with a single booster at 42 months (4-IM); 3-dose IM priming with boosters at 18 and 42 months (5-IM); 3-dose IM priming with boosters at 12, 18, 30, and 42 months (7-IM); the 1970 licensed priming series of 6 doses (0, 0.5, 1, 6, 12, and 18 months) and two annual boosters (30 and 42 months) administered either subcutaneously (SQ) (8-SQ) or IM (8-IM); or saline placebo control at all eight time points. Antibody response profiles included serum anti-PA IgG levels, subclass distributions, avidity, and lethal toxin neutralization activity (TNA). CMI profiles included frequencies of gamma interferon (IFN-γ)- and interleukin 4 (IL-4)-secreting cells and memory B cells (MBCs), lymphocyte stimulation indices (SI), and induction of IFN-γ, IL-2, IL-4, IL-6, IL-1β, and tumor necrosis factor alpha (TNF-α) mRNA. All active schedules elicited high-avidity PA-specific IgG, TNA, MBCs, and T cell responses with a mixed Th1-Th2 profile and Th2 dominance. Anti-PA IgG and TNA were highly correlated (e.g., month 7,r(2)= 0.86,Pvaccination. CMI responses to the 3-dose IM priming remained elevated up to 43 months. (This study has been registered at under registration no. NCT00119067.). PMID:26865594

  3. A framework for using ant colony optimization to schedule environmental flow management alternatives for rivers, wetlands, and floodplains

    Szemis, J. M.; Maier, H. R.; Dandy, G. C.


    Rivers, wetlands, and floodplains are in need of management as they have been altered from natural conditions and are at risk of vanishing because of river development. One method to mitigate these impacts involves the scheduling of environmental flow management alternatives (EFMA); however, this is a complex task as there are generally a large number of ecological assets (e.g., wetlands) that need to be considered, each with species with competing flow requirements. Hence, this problem evolves into an optimization problem to maximize an ecological benefit within constraints imposed by human needs and the physical layout of the system. This paper presents a novel optimization framework which uses ant colony optimization to enable optimal scheduling of EFMAs, given constraints on the environmental water that is available. This optimization algorithm is selected because, unlike other currently popular algorithms, it is able to account for all aspects of the problem. The approach is validated by comparing it to a heuristic approach, and its utility is demonstrated using a case study based on the Murray River in South Australia to investigate (1) the trade-off between plant recruitment (i.e., promoting germination) and maintenance (i.e., maintaining habitat) flow requirements, (2) the trade-off between flora and fauna flow requirements, and (3) a hydrograph inversion case. The results demonstrate the usefulness and flexibility of the proposed framework as it is able to determine EFMA schedules that provide optimal or near-optimal trade-offs between the competing needs of species under a range of operating conditions and valuable insight for managers.

  4. Shiftworking families: parents' working schedule and sleep patterns of adolescents attending school in two shifts

    Biserka Radoševic-Vidacek


    Full Text Available OBJECTIVE: To explore whether parents' engagement in shift work affects the sleep habits of their adolescent children who attend school in two shifts. METHODS: The data were drawn from an extensive survey of sleep and daytime functioning of adolescents attending school one week in the morning and the other in the afternoon. The participants were 1,386 elementary and high school students (11-18 years old whose parents were both employed. The data were analyzed using MANOVA, with parents' work schedule, adolescents' gender and type of school as between-subject factors. RESULTS: Parents' working schedule significantly affected the sleep patterns of high school adolescents. When attending school in the morning, adolescents whose parents were both day workers woke up somewhat later than adolescents with one shiftworking parent. In addition, they slept longer than adolescents whose parents were both shift workers. On weekends, adolescents whose parents both worked during the day went to bed earlier than adolescents whose parents were both shiftworkers. They also had smaller bedtime delay on weekends with respect to both morning and afternoon shifts than adolescents for whom one or both parents worked shifts. A significant interaction between parents' working schedule, adolescents' gender and type of school was found for sleep extension on weekends after afternoon shift school. CONCLUSIONS: Parental involvement in shift work has negative effects on the sleep of high school adolescents. It contributes to earlier wake-up time and shorter sleep in a week when adolescents attend school in the morning, as well as to greater bedtime irregularity.OBJETIVO: Investigar se a ocupação de pais com o trabalho em turnos interfere nos hábitos de sono dos filhos adolescentes que freqüentam a escola em dois períodos distintos. MÉTODOS: Os dados foram coletados em uma extensa pesquisa sobre sono e atividades diurnas de adolescentes que freqüentavam a escola no

  5. Self-Reported Recovery from 2-Week 12-Hour Shift Work Schedules: A 14-Day Follow-Up

    Merkus, Suzanne L.; Holte, Kari Anne; Huysmans, Maaike A.; van de Ven, Peter M; van Mechelen, Willem; van der Beek, Allard J


    Background Recovery from fatigue is important in maintaining night workers' health. This study compared the course of self-reported recovery after 2-week 12-hour schedules consisting of either night shifts or swing shifts (i.e., 7 night shifts followed by 7 day shifts) to such schedules consisting of only day work. Methods Sixty-one male offshore employees—20 night workers, 16 swing shift workers, and 25 day workers—rated six questions on fatigue (sleep quality, feeling rested, physical and m...

  6. Morningness-Eveningness and Flextime Possibilities: Connections Between Circadian Rhythm, Work Day Schedule, Well-Being and Productivity

    Stenvold, Linda Catrine


    The current study aimed to investigate earlier reported connections to the morningness- eveningness dimension or flextime, and to offer an explanatory model linking these variables to well-being and productivity. Earlier findings gave the impression that it could be beneficial for both organizations and employees to have work schedules allowing employees to take their own circadian rhythm into account when planning their work day, since well-rested employees have been shown to be happier an...

  7. Parental Involvement and Work Schedules: Time with Children in the United States, Germany, Norway, and the United Kingdom

    Hook, Jennifer L.; Wolfe, Christina M.


    We examine variation in parents’ time with children by work schedule in two-parent families, utilizing time use surveys from the United States (2003), Germany (2001), Norway (2000), and the United Kingdom (2000) (N = 6,835). We find that American fathers working the evening shift spend more time alone with children regardless of mothers’ employment status, whereas this association is conditional on mothers’ employment in the United Kingdom and Germany. We find no evidence that Norwegian fathe...


    Andersson, Niclas; Christensen, Knud


    The traditional method for planning, scheduling and controlling activities and resources in construction projects is the CPM-scheduling, which has been the predominant scheduling method since its introduction in the late 1950s. Over the years, CPM has proven to be a very powerful technique for...... planning, scheduling and controlling projects. However, criticism has been raised on the CPM method, specifically in the case of construction projects, for deficient management of construction work and discontinuous flow of resources. Alternative scheduling techniques, often called repetitive or linear...... scheduling methods, have proven to be well suited for projects of a repetitive nature, such as building projects. As the repetitive or linear scheduling methods may include locations or places, they are also referred to by the comprehensive term of location-based scheduling (LBS), which is the concept that...

  9. A multiobjective ant colony optimization approach for scheduling environmental flow management alternatives with application to the River Murray, Australia

    Szemis, J. M.; Dandy, G. C.; Maier, H. R.


    In regulated river systems, such as the River Murray in Australia, the efficient use of water to preserve and restore biota in the river, wetlands, and floodplains is of concern for water managers. Available management options include the timing of river flow releases and operation of wetland flow control structures. However, the optimal scheduling of these environmental flow management alternatives is a difficult task, since there are generally multiple wetlands and floodplains with a range of species, as well as a large number of management options that need to be considered. Consequently, this problem is a multiobjective optimization problem aimed at maximizing ecological benefit while minimizing water allocations within the infrastructure constraints of the system under consideration. This paper presents a multiobjective optimization framework, which is based on a multiobjective ant colony optimization approach, for developing optimal trade-offs between water allocation and ecological benefit. The framework is applied to a reach of the River Murray in South Australia. Two studies are formulated to assess the impact of (i) upstream system flow constraints and (ii) additional regulators on this trade-off. The results indicate that unless the system flow constraints are relaxed, there is limited additional ecological benefit as allocation increases. Furthermore the use of regulators can increase ecological benefits while using less water. The results illustrate the utility of the framework since the impact of flow control infrastructure on the trade-offs between water allocation and ecological benefit can be investigated, thereby providing valuable insight to managers.

  10. Collaborative Work as an Alternative for Writing Research Articles

    Nancy Emilce Carvajal Medina


    Full Text Available Academic writing in English in our context is a significant aspect that can be innovative when a convergence model of writing stages is used along with collaborative work. This article reports on a study aimed at analyzing how collaborative work relates to undergraduate electronics students’ academic writing development in English as a foreign language at a Colombian university, following some specific writing stages. Field notes, students’ artifacts, and semi-structured interviews were the instruments used to gather information. The results showed that writing is achievable if students can follow stages and receive feedback from the teacher. Additionally, collaborative work allowed students to write research articles in an easy and dynamic way.

  11. Innovation in two alternative elementary school programs: why it works.

    Dyson, B; O'Sullivan, M


    The purpose of this paper was to describe and interpret the factors that supported and maintained curricular innovation at two alternative elementary schools. The two schools have Project Adventure as their curriculum focus and use the concepts of risk, challenge, trust, cooperation, and problem solving; briefing and debriefing; and personal goal-setting contracts as part of their schoolwide curriculum (Project Adventure, 1991). Data were collected through formal interviews with the physical education teachers, the principals, and four classroom teachers at each school. Nonparticipant observation, field notes, informal interviews, and document analysis were also conducted. Inductive analysis and constant comparison were used to analyze and organize the data throughout the research process. Five factors emerged that supported the implementation of this innovative physical education program: a shared vision, external support for the schools' programs, curricula integration, centrality of physical education, and shared decision making. Project Adventure at these schools provides an example of substantive curricular reform where physical education was a critical element in the school programs. PMID:9777661

  12. Parents' Non-Standard Work Schedules Make Adequate Childrearing Difficult: Reforming Labor Market Practices Can Improve Children's Cognitive and Behavioral Outcomes. Issue Brief #400

    Morsy, Leila; Rothstein, Richard


    Recent developments in employment practices have increased the prevalence of non-standard work schedules--non-daytime shifts in which most hours do not fall between 8 a.m. and 4 p.m., when shifts rotate, or when schedules vary weekly or otherwise. For example, computer software now enables retail, restaurant, service, and other firms to predict…

  13. Numerical Studies On Bubble Pump With Alternate Working Fluids

    L. Bruno Augustin


    Full Text Available The importance of energy conservation in the context of growing global population and dwindling fossil fuel resources cannot be overemphasized. Energy can be conserved by using it more efficiently. The energy spent for an application should be of the correct amount and type. It would make more sense to spend heat energy for heating rather than the high grade electricity as most of the electric power in the world is generated from driving heat engines, for which heat is supplied from the combustion of fossil fuels. At the same time, depletion of these conventional resources also poses a serious problem in meeting energy requirements. In this paper, the bubble pump, which is an integral part of diffusion- absorption refrigeration system, has been investigated numerically .A thermally driven bubble pump, which can be powered by solar thermal energy, is used to lift the liquid. The bubble pump runs on solar energy and reduces the amount of energy spent by replacing the compressor in conventional vapour absorption refrigeration system. As a result of the absence of any mechanical moving part, the refrigerator is silent and very reliable in addition to an economical and environmental friendly device. The concept of such a pump is already in existence but optimization studies are yet to be extensively investigated. This paper deals with the comparison of various parameters of the bubble pump using water and Nonane as the working fluid. Numerical simulation of the bubble pump is carried out using simple numerical equations which assume slug flow in the bubble pump. The mass flow rate, the sensible heating time and position of heating element are varied and the effect it has on diameter of the pipe, pumping ratio and the heat required is studied for both the working fluids

  14. Schedule Control, Supervisor Support and Work Engagement: A Winning Combination for Workers in Hourly Jobs?

    Swanberg, Jennifer E.; McKechnie, Sharon P.; Ojha, Mamta U.; James, Jacquelyn B.


    The changing natures of both work and the lives of the U.S. workforce have created an array of challenges for organizations attempting to foster work engagement. To accommodate the work and family needs of an increasingly diverse workforce, many firms are offering flexible work solutions to employees. However, the distribution of these types of…

  15. The Social Organization of Care Work in India: Challenges and alternative strategies

    Neetha N


    Care work is organized differently in varied economies, though the broader contours may suggest some degree of uniformity. Understanding the social organization of care work and, the processes involved are important in evolving alternative strategies that are otherwise guided by the existing normative assumptions of care. Neetha Pillai addresses care work in social and labour policies, drawing attention to the possibilities of alternative care strategies, beyond the market, in the context of ...

  16. [Investigation of the actual conditions of hospital nurses working on three rotating shifts: questionnaire results of shift work schedules, feelings of sleep and fatigue, and depression].

    Matsumoto, M; Kamata, S; Naoe, H; Mutoh, F; Chiba, S


    These studies were performed to clarify (1) the actual conditions concerning rotating shift schedules of nurses in Japanese university and college hospitals and to evaluate (2) some aspects of the physical and mental health, and (3) sleep profile of hospital nurses working on counter-clockwise shift rotation. Two questionnaire surveys and the OSA sleep inventory (OSA) were carried out. The subjects in the study (1) were a total of 80 nursing directors in university and college hospitals. The questionnaire covered 4 categories, such as the schedule most frequently adopted and reasons for using the schedule. The questionnaires were returned by 67 directors (83.8%). The subjects in the study (2) were 189 nurses working on three-shift work schedules at Asahikawa Medical College Hospital. The items in the questionnaire covered 7 categories, as follows: 1) feeling of sleep after each shift (8 items); 2) feeling of fatigue after each shift (30 items); 3) physical symptoms; 4) inter-personal problems; 5) all the items on Zung's self-rating depression scale (SDS); 6) all the items on the Horne and Ostberg morningness-eveningness questionnaire; and 7) 24 items on the Maudsley personality inventory. The questionnaires were returned by 156 nurses (82.5%), whose mean age and duration of shift-work employment were 27.2 +/- 5.1 and 5.0 +/- 4.3 years (mean +/- SD), respectively. For 152 nurses (97.4%) of those returning the questionnaire, the working schedule consisted of 2 consecutive night shifts and 2 consecutive evening shifts, following a variable number of day shifts (rapid and counterclockwise shift rotation). The subjects in the study (3) were 8 healthy nurses working on above-mentioned three rotating shifts at the psychiatric ward of Asahikawa Medical College Hospital, whose mean age was 29.4 +/- 5.8 years (mean +/- SD). All the subjects recorded their sleep-logs and underwent OSA everyday for 30 consecutive days. Of the 240 OSA data, 95 data (16 after day shift, 17 after

  17. Dispatching AGVs to work centers for transport of a part in online FMS scheduling



    Full Text Available This work describes an user friendly approach, that can be used to obtain AGV dispatching by considering the important criterions from work centre Initiated decisions, Vehicle Initiated decisions and Vehicle & work Initiated decisions. The selection criteria are based on 1 Least Utilization AGV, 2 Most Idle AGV, 3 Nearest distance between AGV and work-centre, and 4 Maximum exit buffer queue size ofwork centre. These parameters are categorized based on numerical values with definite range and corresponding ranks are assigned. Accordingly presented an” Intelligent hybrid module” (IHM and shown how expert knowledge-base and Artificial neural networks (ANN can be used for implementing dispatching AGVs to requesting work centers.

  18. The Effects of the Mars Exploration Rovers (MER) Work Schedule Regime on Locomotor Activity Circadian Rhythms, Sleep and Fatigue

    DeRoshia, Charles W.; Colletti, Laura C.; Mallis, Melissa M.


    This study assessed human adaptation to a Mars sol by evaluating sleep metrics obtained by actigraphy and subjective responses in 22 participants, and circadian rhythmicity in locomotor activity in 9 participants assigned to Mars Exploration Rover (MER) operational work schedules (24.65 hour days) at the Jet Propulsion Laboratory in 2004. During MER operations, increased work shift durations and reduced sleep durations and time in bed were associated with the appearance of pronounced 12-hr (circasemidian) rhythms with reduced activity levels. Sleep duration, workload, and circadian rhythm stability have important implications for adaptability and maintenance of operational performance not only of MER operations personnel but also in space crews exposed to a Mars sol of 24.65 hours during future Mars missions.

  19. Decommissioning Programme Management: reducing risk and cost while accelerating schedules through improved planning, Earned Value Management and safe work execution

    CH2M HILL experience includes more than two decades of managing nuclear facilities and providing clean-up and operations support for commercial and government facilities worldwide. Our expertise ranges from decommissioning and defence sector businesses to nuclear technology development and innovation. Our approach places top priority on the safe execution of work while reducing both risk and cost. Our nuclear services include: programme management, nuclear safety analysis, radiological protection, radioactive waste management, nuclear remediation, nuclear materials and waste transportation management, nuclear safeguards and security services, and nuclear decontamination and decommissioning. This paper will discuss our approach which has resulted in a strong track record of accelerating schedules and reducing costs of major nuclear programmes, including Rocky Flats, Idaho, and our work at UKAEA sites. (author)

  20. Twelve-hour brain lithium concentration in lithium maintenance treatment of manic-depressive disorder: daily versus alternate-day dosing schedule

    Jensen, H.V.; Plenge, P; Stensgaard, A; Mellerup, E.T.; Thomsen, C; Aggernæs, H; Henriksen, O


    The 12-h brain lithium concentration was measured by lithium-7 magnetic resonance spectroscopy in ten manic-depressive patients receiving daily or alternate-day lithium carbonate treatment. The median dose of lithium carbonate was 800 mg in the daily treatment group and 1200 mg in the alternate...... linear regression), but correlated significantly with the 12-h serum lithium concentration (P = 0.003; B = 0.53, 95% c.l. 0.24-0.82; beta = 0.83). Thus at identical 12-h serum lithium concentrations the 12-h brain lithium concentration is similar with both treatment regimes. As the risk of manic-depressive...... relapse during alternate-day lithium treatment is in our experience 3-fold greater than with daily treatment (atsimilar mean 12-h serum lithium concentration), the findings suggest that the difference in the prophylactic efficacy of the two dosing schedules is unrelated to differences in the 12-h brain...

  1. Schedule of conditions for the personnel formation of category A or B working in nuclear facilities

    This document describes the main provisions concerning the formation and the radiation and conventional risks protection of A or B category personnel, working in nuclear facilities. It contents the application domain, the applicable documents, the liability, the formation organizations, the formation to the risk prevention, the retraining and the Passerelles formations. (A.L.B.)


    V.K Turner


    Full Text Available

    ENGLISH ABSTRACT: During the past five years, MRP based systems have increasingly been criticized for their inability to reduce inventory levels, meet due dates and to plan at an operational level. This paper suggests that the actual reasons for these problems are some fundamental flaws in the MRP logic and its assumptions. The logic of the optimized Production Technology (OPT is suggested as an alternative approach that addresses the limitations of MRP based systems.

    AFRIKAANSE OPSOMMING: Gedurende die afgelope vyf jaar het kritiek teen MRP-gebaseerde sisteme toegeneem. Die kritiek is hoofsaaklik dat MRP-sisteme vooraadvlakke nie voldoende verminder nie; beplande datums nie haal nie en ook nie op In operasionele vlak beplan nie. Hierdie artikel wil voorstel dat die rede hiervoor fundamentele foute in die MRP logika en aannames is. Die logika van "optimized Production Technology" (OPT word as alternatief voorgestel, aangesien dit die probleemareas in die MRP-logika aanspreek.

  3. Psychosocial Stress in Nurses With Shift Work Schedule Is Associated With Functional Gastrointestinal Disorders

    Koh, Seong-Joon; Kim, Mingoo; Oh, Da Yeon; Kim, Byeong Gwan; Lee, Kook Lae; Kim, Ji Won


    Background/Aims The aim of this study was to investigate the role of psychosocial problems and their associations with rotating shift work in the development of functional gastrointestinal disorders. Methods In this cross-sectional observation study, survey was administered to nurses and nurse assistants in a referral hospital. In addition to demographic questions, subjects were asked to complete the Rome III Questionnaire, Pittsburgh Sleep Quality Index and Rome III Psychosocial Alarm Questi...

  4. 77 FR 17457 - Work Group on Alternative Test Methods for Commercial Measuring Devices


    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF COMMERCE National Institute of Standards and Technology Work Group on Alternative Test Methods for Commercial...: The National Institute of Standards and Technology (NIST) is forming a Work Group (WG) to...

  5. A Quantitative Analysis of Response Elimination and Resurgence Using Rich, Lean, and Thinning Schedules of Alternative Reinforcement

    Sweeney, Mary M.


    A common approach to the treatment of instrumental problem behavior is the introduction of an acceptable alternative source of reinforcement. However, when alternative reinforcement is removed or reduced, the target behavior tends to relapse. The relapse of a target response following the removal of alternative reinforcement has been termed resurgence. Shahan and Sweeney developed a quantitative model of resurgence based on behavioral momentum theory that captures both the disruptive and stre...

  6. Algorithm of Alternating Current Schedule Power Flow for Bulk Interconnected Grid%大型互联电网交流计划潮流算法

    丁平; 李亚楼; 田芳; 李柏青; 严剑峰; 于之虹; 周孝信; 罗志强


    In China Power Grid, calculation of alternating current schedule power flow is an important foundation for checking security of schedule. An algorithm of AC schedule power flow applied to bulk interconnected power system was put forward in this paper. The principle of calculating was set firstly, which include four points, namely faithfulness, diversity by area, reality, selectable. Then solution based on interfaces controlling method was given. An approach to active schedule step by step was offered with three means of distributing unbalance power. To regulate reactive power, a method taking advantage of react power arranged in similar power flow was employed, which included using voltage of similar power flow as initial and determining parameter variation referring to closeness between active power of schedule and similar power flow. The algorithm was validated by cases from IEEE 39-node and China State Grid. The algorithm proposed is convergent well, can give power flow close to schedule data and situation appearing in power system, and owns good value for popularization and application.%在中国电网,交流计划潮流计算是校核计划安全性的重要基础。该文提出适用于大型互联电网的交流计划潮流算法。首先确立计算必须遵循的忠实性、分区域、真实性和可选择等4个原则;然后给出基于多断面控制法的实现方案。提出分阶段逐步逼近有功计划的方法,并给出3种不同的不平衡功率分配方式;提出以相似潮流中无功分布为初值并根据有功潮流相似度决定参数变化范围的无功调整方法。所提算法的有效性用 IEEE 39节点和中国国家电网的算例进行了验证。所提算法收敛性强,能给出与计划值和电网实际情况高度接近的潮流结果,具有良好的推广应用价值。

  7. A bio-economic approach to analyze the role of alternative seeding-harvesting schedules, water quality, stocking density and duration of cultivation in semi-intensive production of shrimp in Mexico

    Margarita Estrada-Pérez


    Full Text Available We used a bio-economic model to analyze the role that alternative seeding-harvesting schedules, temperature, dissolved oxygen, stocking density, and duration of cultivation play in the economic performance of semi-intensive shrimp cultivation in Mexico. The highest production was predicted for the May-August schedule (1130-2300 kg ha-1, while the lowest yields were obtained for the March-June schedule (949-1300 kg ha-1. The highest net revenues were projected for the August-November schedule (US$354-1444 ha-1, while the lowest was projected for the May-August schedule (US$330-923 ha-1. The highest annual net revenues were predicted for the combination of the March-June and August-November schedules (US$1432-2562 ha-1. Sensitivity analysis indicated temperature and dissolved oxygen were the most important factors determining net revenues in March-June schedule. For the May-August and August-November schedules, stocking density was the most important factor. Duration of cultivation was the least sensitive variable. Break-even production analysis confirmed that the combination of the March-June and August-November schedules were more efficient from an economic perspective. We recommend test some ponds with higher stocking density in the March-June and August-November schedules, and in the latter case, seeding in June or July rather than August.

  8. Evaluation of a twelve-hour/day shift schedule

    In April 1985, the operating crews at the Fast Flux Test Facility near Richland, Washington, changed their rotating shift schedule from an 8-hour to a 12-hour a day work schedule. The primary purpose of the change was to reduce the attrition of operators by increasing their job satisfaction. Eighty-four percent of the operators favored the change. A program was established to evaluate the effects on plant performance, operator alertness, attrition, sleep, health, job satisfaction, and off-the-job satisfaction. Preliminary results from that evaluation program indicate that the 12-hour shift schedule is a reasonable alternative to an 8-hour schedule at this facility

  9. Alternative Structures and Methods in Teacher Education. Report of a Technical Working Group (Kathmandu, Nepal, October 21-30, 1975).

    Philippines Univ., Quezon City. Asian Inst. for Teacher Educators.

    The technical working group meeting on alternative structures and methods in teacher education met to: 1) examine case studies prepared on alternative structures and methods in teacher education and other relevant materials; 2) prepare models of alternative structures and methods in teacher training; and 3) make suggestions on field-testing of…

  10. 76 FR 73025 - Medicare Program; Payment Policies Under the Physician Fee Schedule, Five-Year Review of Work...


    ... Situ Hybridization Testing FOTO Focus On Therapeutic Outcomes FQHC Federally Qualified Health Center FR... final rule, published on November 25, 1991 (56 FR 59502), set forth the fee schedule... Mineral Density BMI Body Mass Index BN Budget Neutrality BPM Benefit Policy Manual CABG Coronary...

  11. "Always work with a straight back": the fallacies of modern management and the alternative

    Petersen, Verner C.


    value-based leadership. Design/methodology/approach - Practical examples are used to discuss and demonstrate the problematic consequences of using management tools like detailed work descriptions, standards, comprehensive measurement schemes, and rule-based specifications of responsibility. Constructed...... mind-less and care-less behaviour by employees, while an alternative relying on self-organisation and value-based leadership might preserve and enhance insight, motivation and responsibility. Research limitations/implications - The paper is mainly a conceptual discussion using examples. Practical......Purpose - The purpose of this article is to show that the tools of modern management which are supposed to promote effectiveness, efficiency and responsible behaviour, may in fact contribute to the opposite, and to present the outline of an alternative based upon new ideas of self-organisation and...

  12. Flight Crew Scheduling

    Graves, Glenn W.; Richard D. McBride; Ira Gershkoff; Diane Anderson; Deepa Mahidhara


    A new crew scheduling optimization system has been developed for United Airlines. The system was developed to permit quick response to schedule changes and to reduce crew scheduling costs. It was designed to work efficiently for both the medium sized problems (300 flights daily) and the very large problems (1,700 flights daily) that United must solve. The system has two main components, a generator and an optimizer. The generator creates pairings (candidate crew trips) which are fed as variab...

  13. An educational alternative for improving working conditions in small and medium enterprises

    Eliana Castro S


    Full Text Available Managing health and safety at work involves considering two internal processes common to all organizations: knowledge and human talent management. These two processes are affected by globalizing phenomena that have an effect at the economic, environmental, and occupational levels. This is especially true for countries like Colombia. Objective: to provide an educational alternative that contributes to knowledge management in SME’s in order to improve the working conditions and to support their innovation processes. Methodology: an exploratory and descriptive study. We start by analyzing the concepts related to the improvement of working conditions and experiences from previous projects involving the university-industry relationship. This is done from the systemic viewpoint that characterizes the ergonomics and interdisciplinary perspectives of the professional practice of industrial design. Result: the proposal was approved by regional institutions wishing to conduct a pilot study, and is based on principles establishing health promotion at the workplace. It also includes a methodology for affecting the technological core of companies and contributes to the empowerment of the personnel involved. Conclusion:it is mandatory that organizations express their support and commitment through a policy that facilitates the active participation of employees in these processes.

  14. Work schedules in health care in France: very few changes between 1991 and 1998, according to national data.

    Estryn-Behar, M; Vinck, L; Caillard, J F


    It is important to know whether working time schemes offer, following the adoption of the 1990 ILO Night Work Convention, a better use of the actual knowledge in moderating the adverse effects of shiftwork for both sexes. The last two national studies on a representative sample, about working conditions in France (1991, 1998), show an increase of night work among female nursing staff. Long hours of work are becoming more common for nurses. The percentage of women health care workers not working the same number of days every week increased, with work weeks of 7 days or more. Few positive aspects exist such as a reduction in the proportion of those having to work 17 Sundays or more and a reduction of shifts beginning before 7 a.m. for female nurses. New negotiations, starting in 2001, should be an opportunity for improvements. PMID:14564903

  15. Project scheduling

    Starting with commercial service of Dresden Unit 1 in 1960, Commonwealth Edison Company has assumed a major role in the commercial development of nuclear power. Seven units are now in operation and eight additional units are scheduled for service through the mid-1980's. To manage this large volume of construction, a project oriented management information system has been developed. The major elements of this system include a Budget and Cost Reporting System, a Field Cost Reporting System, and a Project Scheduling System. The paper deals with the Scheduling System. In spite of the traditional resistance to change, the scheduling system is on the road to acceptance. Using three distinct levels of scheduling detail, schedule information is obtained from all key departments and processed through the computer and an electrostatic plotter. Schedule reports are carefully designed for specific management levels

  16. Psychosocial aspects of work and health in the North Sea oil and gas industry. Pt. 3: Sleep, mood, and performance in relation to offshore shift rotation schedules. Pt. 4: The offshore environment in the mid-1990s: a survey of psychosocial factors



    This report describes a study of offshore shift rotation patterns, the aim of which was to compare fixed-shift and rollover schedules in terms of sleep, mood, and cognitive performance. Two rollover patterns, night followed by days (7N + 7D) and days followed by nights (7D + 7N), and one fixed-shift pattern in which day and night shifts were worked on alternate tours (14D + 14N), were studied. Data were collected on four North Sea oil and gas platforms. For analysis purposes, the two-week work cycle was divided into three test phases, each covering three consecutive shifts. Prior to the first two phases, ``practice`` shifts (during which data were collected but not analysed) were scheduled, and phases were separated by one or two ``rest`` shifts (during which no data were collected). Assessments were carried out at the start, middle, and end of each test shift. (author)

  17. Flexible Scheduling: Making the Transition

    Creighton, Peggy Milam


    Citing literature that supports the benefits of flexible scheduling on student achievement, the author exhorts readers to campaign for flexible scheduling in their library media centers. She suggests tips drawn from the work of Graziano (2002), McGregor (2006) and Stripling (1997) for making a smooth transition from fixed to flexible scheduling:…

  18. Work schedule and self-reported hypertension - the potential beneficial role of on-shift naps for night workers.

    Rotenberg, Lúcia; Silva-Costa, Aline; Vasconcellos-Silva, Paulo Roberto; Griep, Rosane Härter


    Data on the association between shift work and hypertension are controversial. Sleep restriction is hypothesized to be involved in this relationship. Since on-shift nap can partly compensate for sleep deprivation among night workers, this investigation is aimed at (i) comparing the prevalence of hypertension among workers considering both current and former night work, (ii) testing the association between on-shift naps and hypertension among night workers, and (iii) analyzing the influence of sleep complaints in the association between on-shift nap and hypertension. Nap was defined as a sleep episode with duration shorter than the average nighttime sleep. A cross-sectional study was performed at the 18 largest public hospitals in Rio de Janeiro, Brazil, in 2010-2011 (N = 2588 female registered nurses). Nurses were informally allowed to nap for up to three consecutive hours during working nights. Workers completed a multidimensional questionnaire including self-reported information on physician diagnosis of hypertension, napping, and sleep complaints (insomnia, diurnal sleepiness, and non-satisfactory sleep). Epidemiological and statistical treatment of data included binomial logistic regression and interaction tests. Higher chances of hypertension were observed for both current and former night workers compared with workers with no previous experience in night work, i.e. exclusive day workers (OR = 1.68; CI95% 1.22-2.33 and OR = 1.40; CI95% 1.01-1.96, respectively) after adjustment for age, race/ethnicity, physical activity, smoking, alcohol consumption, insomnia, weekly work hours, and BMI. Compared with exclusive day workers, both non-nappers and nappers were at a higher likelihood of reporting hypertension (OR = 1.93 CI95% 1.35-2.79 and OR = 1.41 CI95% 1.08-2.20, respectively). An interaction was observed between napping behavior and insomnia (p = 0.037). In the whole sample of night workers, the lower OR for nappers was confirmed when they were directly

  19. Decentralized Ground Staff Scheduling

    Sørensen, M. D.; Clausen, Jens


    Typically, ground staff scheduling is centrally planned for each terminal in an airport. The advantage of this is that the staff is efficiently utilized, but a disadvantage is that staff spends considerable time walking between stands. In this paper a decentralized approach for ground staff...... scheduling is investigated. The airport terminal is divided into zones, where each zone consists of a set of stands geographically next to each other. Staff is assigned to work in only one zone and the staff scheduling is planned decentralized for each zone. The advantage of this approach is that the staff...... work in a smaller area of the terminal and thus spends less time walking between stands. When planning decentralized the allocation of stands to flights influences the staff scheduling since the workload in a zone depends on which flights are allocated to stands in the zone. Hence solving the problem...

  20. Decentralized Ground Staff Scheduling

    Sørensen, M. D.; Clausen, Jens


    Typically, ground staff scheduling is centrally planned for each terminal in an airport. The advantage of this is that the staff is efficiently utilized, but a disadvantage is that staff spends considerable time walking between stands. In this paper a decentralized approach for ground staff scheduling is investigated. The airport terminal is divided into zones, where each zone consists of a set of stands geographically next to each other. Staff is assigned to work in only one zone and the sta...

  1. Turbo-alternator-compressor design for supercritical high density working fluids

    Wright, Steven A.; Fuller, Robert L.


    Techniques for generating power are provided. Such techniques involve a thermodynamic system including a housing, a turbine positioned in a turbine cavity of the housing, a compressor positioned in a compressor cavity of the housing, and an alternator positioned in a rotor cavity between the turbine and compressor cavities. The compressor has a high-pressure face facing an inlet of the compressor cavity and a low-pressure face on an opposite side thereof. The alternator has a rotor shaft operatively connected to the turbine and compressor, and is supported in the housing by bearings. Ridges extending from the low-pressure face of the compressor may be provided for balancing thrust across the compressor. Seals may be positioned about the alternator for selectively leaking fluid into the rotor cavity to reduce the temperature therein.

  2. Flexible Scheduling to Fit the Firefighters.

    Cox, Clarice Robinson

    Three flexible scheduling plans were tried in order that firefighters could take regular college courses despite their 24 hours on the 24 off work schedule. Plan one scheduled the firefighters into a regular Monday-Wednesday-Friday class which they attended every other week, making up missed material outside of class. Plan two scheduled special…

  3. Audit Schedule

    Martinez Pinzon, Christian


    [CATALÀ] Audit Schedule és una aplicació web per a la gestió d'auditories al sector de l'aviació privada. Realitzada amb Salesforce per a l'empresa Puck Solutions S.L. [ANGLÈS] Audit Schedule is a web application for managing aduits of the private aviation sector. Performed with Salesforce for the Puck Solutions S.L. company.

  4. New Ways of Working and Organization: Alternative Agrifood Movements and Agrifood Researchers

    Friedland, William H.


    The remarkable growth of alternative agrifood movements--organics, fair trade, localism, Slow Food, farmers' markets, community-supported agriculture, food security, food safety, food sovereignty, anti-genetically modified organisms, animal welfare, and others--and their attraction to younger academic scholars offer a unique opportunity to explore…

  5. An alternative optimization model and robust experimental design for the Assignment Scheduling Capability for the Unmanned Aerial Vehicles (ASC-U) simulation

    Oliver, Derek M.


    The Modeling, Virtual Environments, and Simulations Institute (MOVES) and the United States Army Training and Doctrine Command (TRADOC) Analysis Center (TRAC) at the Naval Postgraduate School, Monterey, California, developed the Assignment Scheduling Capability for Unmanned Aerial Vehicles (ASC-U) discrete event simulation to aid in the analysis of future U.S. Army Unmanned Aerial Vehicle (UAV) requirements. TRAC selected ASC-U to provide insight into the programmatic decisions addresse...

  6. 33 CFR 203.50 - Nonstructural alternatives to rehabilitation of flood control works.


    ... rehabilitation of flood control works. 203.50 Section 203.50 Navigation and Navigable Waters CORPS OF ENGINEERS... DISASTER PROCEDURES Rehabilitation Assistance for Flood Control Works Damaged by Flood or Coastal Storm... of flood control works. (a) Authority. Under Public Law 84-99, the Chief of Engineers is...

  7. NASA Schedule Management Handbook


    The purpose of schedule management is to provide the framework for time-phasing, resource planning, coordination, and communicating the necessary tasks within a work effort. The intent is to improve schedule management by providing recommended concepts, processes, and techniques used within the Agency and private industry. The intended function of this handbook is two-fold: first, to provide guidance for meeting the scheduling requirements contained in NPR 7120.5, NASA Space Flight Program and Project Management Requirements, NPR 7120.7, NASA Information Technology and Institutional Infrastructure Program and Project Requirements, NPR 7120.8, NASA Research and Technology Program and Project Management Requirements, and NPD 1000.5, Policy for NASA Acquisition. The second function is to describe the schedule management approach and the recommended best practices for carrying out this project control function. With regards to the above project management requirements documents, it should be noted that those space flight projects previously established and approved under the guidance of prior versions of NPR 7120.5 will continue to comply with those requirements until project completion has been achieved. This handbook will be updated as needed, to enhance efficient and effective schedule management across the Agency. It is acknowledged that most, if not all, external organizations participating in NASA programs/projects will have their own internal schedule management documents. Issues that arise from conflicting schedule guidance will be resolved on a case by case basis as contracts and partnering relationships are established. It is also acknowledged and understood that all projects are not the same and may require different levels of schedule visibility, scrutiny and control. Project type, value, and complexity are factors that typically dictate which schedule management practices should be employed.

  8. How should periods without social interaction be scheduled? Children's preference for practical schedules of positive reinforcement.

    Luczynski, Kevin C; Hanley, Gregory P


    Several studies have shown that children prefer contingent reinforcement (CR) rather than yoked noncontingent reinforcement (NCR) when continuous reinforcement is programmed in the CR schedule. Preference has not, however, been evaluated for practical schedules that involve CR. In Study 1, we assessed 5 children's preference for obtaining social interaction via a multiple schedule (periods of fixed-ratio 1 reinforcement alternating with periods of extinction), a briefly signaled delayed reinforcement schedule, and an NCR schedule. The multiple schedule promoted the most efficient level of responding. In general, children chose to experience the multiple schedule and avoided the delay and NCR schedules, indicating that they preferred multiple schedules as the means to arrange practical schedules of social interaction. In Study 2, we evaluated potential controlling variables that influenced 1 child's preference for the multiple schedule and found that the strong positive contingency was the primary variable. PMID:24890928

  9. Play Hard, Work Harder. Alternative Reality Game and Scenario Based Assessments for Learning.

    Ryan, Barry


    In this paper, an evaluative case study is detailed as an example of alternative reality game and scenario based assessments for learning. This pedagogic approach is evaluated and recommendations for practice offered. Integrating technology into the assessment process, and final student product, influenced the chosen pedagogy. The use of technology permitted this assessment approach to be adopted for a medium sized (n=40) student cohort. The use of wikis, eportfolios and digital reflective di...

  10. Mother's Employment and Daughter's Work Orientation: A Test of Alternative Socialization Processes for Blacks and Whites.

    Macke, Anne; Morgan, William R.

    This study successively tests simple modeling, normative influence, and conditional positive modeling hypotheses about the working mother's effect on her daughter's work orientation. Four hypotheses are postulated and tested separately by race to examine possible racial differences. The most complex hypothesis is that if modeling is conditioned by…

  11. Alternative tools to mass production and human performance indicators in sheltered work centers of Valencian community (Spain

    Juan A. Marin-Garcia


    Full Text Available Purpose: The most popular alternative systems to mass production at an academic level (lean manufacturing, agile manufacturing, flexible customization, mass customization... share many characteristics. Our article identifies an extensive set of alternative practices to mass production; analyzes the classification of practices in categories (Flow, TQM, TPM, Customer Relations, Supplier Relations and Human Resources Practices and analyzes the impact on several human performance indicators such as satisfaction, absenteeism, voluntary turnover, permanent contracts, knowledge, personal & social adjustment activities and integration of workers into ordinary companies. Design/methodology/approach: Survey in sheltered work centers. We use regression analysis in order to prove relations between explicative and criterion variables. Findings: The results of our research allow us to identify that human resource management and customer relationship practices have significant effects on job satisfaction, knowledge, integration into ordinary companies and personal and social adjustment. Research limitations/implications: Data came only from one industry; therefore the results would not be directly generalized to other contexts. Practical implications: Managers in Sheltered work centers can estimate the impact of the deployment of alternative tools to mass production. Originality/value: There are few papers relating lean manufacturing tools and human resources performance indicators. At the same time, there are very few research carried out in sheltered work centers context.

  12. Modeling Employees' Perceptions and Proportional Preferences of Work Locations: The Regular Workplace and Telecommuting Alternatives

    Mokhtarian, Patricia; Bagley, Michael


    This paper develops measures of job and workplace perceptions, and examines the importance of those and other measures to the desired proportions of work time at each of three locations: regular workplace, home, and telecommuting center. Using data from 188 participants in the Neighborhood Telecenters Project, four job context perception factors were identified: productivity, job satisfaction, supervisor relationship, and co-worker interaction. Four generic workplace perception factors were i...

  13. Worked examples of alternative methods for the synthesis of qualitative and quantitative research in systematic reviews

    Law Catherine; Arai Lisa; Baird Janis; Lucas Patricia J; Roberts Helen M


    Abstract Background The inclusion of qualitative studies in systematic reviews poses methodological challenges. This paper presents worked examples of two methods of data synthesis (textual narrative and thematic), used in relation to one review, with the aim of enabling researchers to consider the strength of different approaches. Methods A systematic review of lay perspectives of infant size and growth was conducted, locating 19 studies (including both qualitative and quantitative). The dat...

  14. Block Scheduling: Center for School Success Promising Practices Series

    Imbimbo, Josephine; Gilkes, Alwyn


    This publication focuses on block scheduling. Alternative scheduling models--usually called "block scheduling" because they involve blocks of time for student learning--restructure the school day. Schools may adopt block scheduling to create more productive and personal relationships among teachers and students, to design challenging curricula…

  15. Diagnosis of an anaerobic pond treating temperate domestic wastewater: An alternative sludge strategy for small works

    Cruddas, Peter; Wang, K.; Best, D.; Jefferson, Bruce; Cartmell, Elise; Parker, Alison; McAdam, Ewan J.


    An anaerobic pond (AP) for treatment of temperate domestic wastewater has been studied as a small works sludge management strategy to challenge existing practice which comprises solids separation followed by open sludge storage, for up to 90 days. During the study, effluent temperature ranged between 0.1 °C and 21.1 °C. Soluble COD production was noted in the AP at effluent temperatures typically greater than 10 °C and was coincident with an increase in effluent volatile fatty acids (VFA) con...

  16. Excitotoxic lesion of the perirhinal cortex impairs spatial working memory in a delayed-alternation task.

    Maioli, Silvia; Gangarossa, Giuseppe; Locchi, Federica; Andrioli, Anna; Bertini, Giuseppe; Rimondini, Roberto


    The perirhinal cortex (PRh) is strategically located between the neocortex and memory-related structures such as the entorhinal cortex and the hippocampal formation. The pattern of strong reciprocal connections between these areas, together with experimental evidence that PRh damage induces specific memory deficits, has placed this cortical region at the center of a growing interest for its role in learning and memory mechanisms. The aim of the present study is to clarify the involvement of PRh in learning and retention in a novel experimental model of spatial working memory, the water T-maze. The data show that pre-acquisition neurotoxic PRh lesions caused task-learning deficits. This impairment was observed during the acquisition phase as well as the retrieval phase. On the other hand, a post-acquisition PRh neurotoxic lesion failed to impair the acquisition and the retrieval of the water T-maze task performed 32 day after lesion. These results suggest a possible key role of PRh in the acquisition but not in the retention of a working memory task. Furthermore, these results show that the water T-maze may be a suitable learning paradigm to study different components of learning and memory. PMID:22391121

  17. Online scheduling

    Pruhs, K.; Torng, E.; Sgall, Jiří

    Boca Raton: CRC Press, 2004, s. 1-41 R&D Projects: GA MŠk ME 103; GA MŠk ME 476; GA ČR GA201/01/1195; GA MŠk LN00A056; GA AV ČR IAA1019901 Institutional research plan: CEZ:AV0Z1019905 Keywords : online algorithms * scheduling Subject RIV: BA - General Mathematics

  18. Rostering and Task Scheduling

    Dohn, Anders Høeg

    rostering process is non-trivial and especially when service is required around the clock, rostering may involve considerable effort from a designated planner. Therefore, in order to minimize costs and overstaffing, to maximize the utilization of available staff, and to ensure a high level of satisfaction...... among the employees, sophisticated scheduling methods are required. When approaching the day of operation, the detail level of the planning becomes finer. With a given allocation of shifts to employees, the focus is turned to tasks scheduling within those shifts. The objective is to assign as much work...... as possible to the available staff, while respecting various requirements and rules and while including possible transportation time between tasks. This thesis presents a number of industrial applications in rostering and task scheduling. The applications exist within various contexts in health care...

  19. T-maze Forced Alternation and Left-right Discrimination Tasks for Assessing Working and Reference Memory in Mice

    Shoji, Hirotaka; Hagihara, Hideo; Takao, Keizo; Hattori, Satoko; Miyakawa, Tsuyoshi


    Forced alternation and left-right discrimination tasks using the T-maze have been widely used to assess working and reference memory, respectively, in rodents. In our laboratory, we evaluated the two types of memory in more than 30 strains of genetically engineered mice using the automated version of this apparatus. Here, we present the modified T-maze apparatus operated by a computer with a video-tracking system and our protocols in a movie format. The T-maze apparatus consists of runways pa...

  20. Why Doesn't The GRE or GPA Work in Selecting Graduate Students & What Alternatives Are There ?

    Sedlacek, William


    The simplest response to the title of this paper is that the measures that are commonly employed in evaluating prospective graduate and professional students don’t work. That is, scores from the Graduate Record Examination (GRE) and prior grades (GPA) appear to have little validity in assessing postbaccalaureate student potential (Sternberg & Williams, 1997; Sedlacek, 1998, 2004; Bair & Haworth, 1999). Measurement problems such as restriction of range will discussed and the need to consider a multiverse statistical model presented. An alternative assessment system based on noncognitive variables will be presented and examples of its use with graduate and professional students discussed (Sedlacek, 2004, 2012, in press).

  1. Horizontal career changes as an alternative to premature exit from work.

    Aleksandrowicz, Paula; Zieschang, Hanna; Bräunig, Dietmar; Jahn, Frauke


    Certain workplaces are called jobs with limited tenure. Due to physical or psychosocial risk factors, often coupled with qualification mismatches, workers cannot grow old in them. That may lead to premature exit into retirement, to a period of drawing a work incapacity pension or to a long spell of unemployment. A horizontal career change, which enables the worker to move on to a less burdening workplace while preserving social status, is a possible solution. The objective of the "Horizontal career change-a new job opportunity for older employees" project is to develop a model of career changes for workers employed in jobs with limited tenure and to implement it in the form of an information- and communication technology-based tool. Possible applications range from individual career planning, through institutionalized vocational reintegration, to personnel development in small and medium-sized enterprises. PMID:24629881

  2. Optimization and Scheduling Toolbox

    Kutil, Michal; Sucha, Premysl; Capek, Roman; Hanzalek, Zdenek


    This chapter presents the TORSCHE Scheduling Toolbox for Matlab covering: scheduling on monoprocessor/dedicated processors/parallel processors, open shop/flow shop/job shop scheduling, cyclic scheduling and real-time scheduling. The toolbox includes scheduling algorithms that have been used for various applications as scheduling of Digital Signal Processing algorithms on a hardware architecture with pipelined arithmetic units, scheduling the movements of hoists in a manufacturing environment...


    A.Neela Madheswari


    Full Text Available In the area of Computer Science, Parallel job scheduling is an important field of research. Finding a best suitable processor on the high performance or cluster computing for user submitted jobs plays animportant role in measuring system performance. A new scheduling technique called communication aware scheduling is devised and is capable of handling serial jobs, parallel jobs, mixed jobs and dynamic jobs.This work focuses the comparison of communication aware scheduling with the available parallel job scheduling techniques and the experimental results show that communication aware scheduling performs better when compared to the available parallel job scheduling techniques.

  4. A Hybrid Task Scheduling Algorithm in Grid

    ZHANG Yan-mei; CAO Huai-hu; YU Zhen-wei


    Task scheduling in Grid has been proved to be NP- complete problem. In this paper, to solve this problem, a Hybrid Task Scheduling Algorithm in Grid (HTS) has been presented, which joint the advantages of Ant Colony and Genetic Algorithm.Compared with the related work, the result shows that the HTS algorithm significantly surpasses the previous approaches in schedule length ratio and speedup.

  5. Range Chart-Guided Iterative Data-Flow-Graph Scheduling

    Heemstra de Groot, Sonia M.; Gerez, Sabih H.; Herrmann, Otto E.


    An alternative method for the scheduling of iterative data-flow graphs is described. The method is based on the scheduling-range chart, which contains the information on the range within which each operation in the graph can be scheduled. The scheduling range is determined by considering the intraiteration and interiteration precedence relations. The goal is to find an optimal position within the scheduling range of each operation in such a way that some quality criteria (number of hardware r...

  6. Dynamic scheduling. State of the art report.

    Kocjan, Waldemar


    Most of the research literature concerning scheduling concentrates on the static problems, i.e. problems where all input data is known and does not vary over the time. However, the real world scheduling problems are very seldom static. Events like machine failures or work overloads are, in some situations, impossible to predict. Dynamic scheduling is a research field which take into consideration uncertainty and dynamic changes in the scheduling problem. This paper gives...

  7. A Survey of determination of effects to conflicts in project scheduling

    D. B. Hanchate S. A. Shinde Y. N. Sakhare S. S. Kare


    In project management ,mainly scheduling refers to a set of policies and mechanisms to control the order of work performed .In scheduling of project there are many problems such as general employee scheduling problem, Bus driver scheduling problem, Scheduling problem in self suspending tasks. Resource scheduling problem ,university class scheduling problem and so on. Conflict measurement is one of the key tasks for project scheduling. This work is mainly focusing on parameters that affects to...

  8. Work.

    Haines, Annette M.


    Draws upon Maria Montessori's writings to examine work as a universal human tendency throughout life. Discusses the work of adaptation of the infant, work of "psycho-muscular organism" for the preschooler, work of the imagination for the elementary child, community work of the adolescent, and work of the adult. Asserts that Montessorians' role is…

  9. CMS multicore scheduling strategy

    Pérez-Calero Yzquierdo, Antonio; Hernández, Jose; Holzman, Burt; Majewski, Krista; McCrea, Alison; Cms Collaboration


    In the next years, processor architectures based on much larger numbers of cores will be most likely the model to continue "Moore's Law" style throughput gains. This not only results in many more jobs in parallel running the LHC Run 1 era monolithic applications, but also the memory requirements of these processes push the workernode architectures to the limit. One solution is parallelizing the application itself, through forking and memory sharing or through threaded frameworks. CMS is following all of these approaches and has a comprehensive strategy to schedule multicore jobs on the GRID based on the glideinWMS submission infrastructure. The main component of the scheduling strategy, a pilot-based model with dynamic partitioning of resources that allows the transition to multicore or whole-node scheduling without disallowing the use of single-core jobs, is described. This contribution also presents the experiences made with the proposed multicore scheduling schema and gives an outlook of further developments working towards the restart of the LHC in 2015.

  10. CMS multicore scheduling strategy

    Perez-Calero Yzquierdo, Antonio [Madrid, CIEMAT; Hernandez, Jose [Madrid, CIEMAT; Holzman, Burt [Fermilab; Majewski, Krista [Fermilab; McCrea, Alison [UC, San Diego


    In the next years, processor architectures based on much larger numbers of cores will be most likely the model to continue 'Moore's Law' style throughput gains. This not only results in many more jobs in parallel running the LHC Run 1 era monolithic applications, but also the memory requirements of these processes push the workernode architectures to the limit. One solution is parallelizing the application itself, through forking and memory sharing or through threaded frameworks. CMS is following all of these approaches and has a comprehensive strategy to schedule multicore jobs on the GRID based on the glideinWMS submission infrastructure. The main component of the scheduling strategy, a pilot-based model with dynamic partitioning of resources that allows the transition to multicore or whole-node scheduling without disallowing the use of single-core jobs, is described. This contribution also presents the experiences made with the proposed multicore scheduling schema and gives an outlook of further developments working towards the restart of the LHC in 2015.

  11. CMS multicore scheduling strategy

    In the next years, processor architectures based on much larger numbers of cores will be most likely the model to continue 'Moore's Law' style throughput gains. This not only results in many more jobs in parallel running the LHC Run 1 era monolithic applications, but also the memory requirements of these processes push the workernode architectures to the limit. One solution is parallelizing the application itself, through forking and memory sharing or through threaded frameworks. CMS is following all of these approaches and has a comprehensive strategy to schedule multicore jobs on the GRID based on the glideinWMS submission infrastructure. The main component of the scheduling strategy, a pilot-based model with dynamic partitioning of resources that allows the transition to multicore or whole-node scheduling without disallowing the use of single-core jobs, is described. This contribution also presents the experiences made with the proposed multicore scheduling schema and gives an outlook of further developments working towards the restart of the LHC in 2015.

  12. Network scheduling at Belene NPP construction site

    Four types of schedules differing in the level of their detail are singled out to enhance the efficiency of Belene NPP Project implementation planning and monitoring: Level 1 Schedule–Summary Integrated Overall Time Schedule (SIOTS) is an appendix to EPC Contract. The main purpose of SIOTS is the large scale presentation of the current information on the Project implementation. Level 2 Schedule–Integrated Overall Time Schedule (IOTS)is the contract schedule for the Contractor (ASE JSC) and their subcontractors.The principal purpose of IOTS is the work progress planning and monitoring, the analysis of the effect of activities implementation upon the progress of the Project as a whole. IOTS is the reporting schedule at the Employer –Contractor level. Level 3 Schedules, Detail Time Schedules(DTS) are developed by those who actually perform the work and are agreed upon with Atomstroyexport JSC.The main purpose of DTS is the detail planning of Atomstroyexport subcontractor's activities. DTSare the reporting schedules at the level of Contractor-Subcontractor. Level 4 Schedules are the High Detail Time Schedules (HDTS), which are the day-to-day plans of work implementation and are developed, as a rule, for a week's time period.Each lower level time schedule details the activities of the higher level time schedule

  13. Scheduled denoising autoencoders

    Geras, Krzysztof J.; Sutton, Charles


    We present a representation learning method that learns features at multiple different levels of scale. Working within the unsupervised framework of denoising autoencoders, we observe that when the input is heavily corrupted during training, the network tends to learn coarse-grained features, whereas when the input is only slightly corrupted, the network tends to learn fine-grained features. This motivates the scheduled denoising autoencoder, which starts with a high level of noise that lower...

  14. Scheduled Denoising Autoencoders

    Geras, Krzysztof; Sutton, Charles


    We present a representation learning method that learns features at multiple different levels of scale. Working within the unsupervised framework of denoising autoencoders, we observe that when the input is heavily corrupted during training, the network tends to learn coarse-grained features, whereas when the input is only slightly corrupted, the network tends to learn fine-grained features. This motivates the scheduled denoising autoencoder, which starts with a high level of noise that lower...

  15. 08071 Abstracts Collection -- Scheduling

    Jane W. S. Liu; Rolf H. Möhring; Pruhs, Kirk


    From 10.02. to 15.02., the Dagstuhl Seminar 08071 ``Scheduling'' was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in gen...

  16. 10071 Abstracts Collection -- Scheduling

    Albers, Susanne; Baruah, Sanjoy K; Rolf H. Möhring; Pruhs, Kirk


    From 14.02. to 19.02.2010, the Dagstuhl Seminar 10071 ``Scheduling '' was held in Schloss Dagstuhl-Leibniz Center for Informatics. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in general. Links to ext...

  17. Integrated Control and Scheduling

    Årzén, Karl-Erik; Bernhardsson, Bo; Eker, Johan; Cervin, Anton; Nilsson, Klas; Persson, Patrik; Sha, Lui


    The report gives a state-of-the-art survey of the field of integrated control and scheduling. Subtopics discussed are implementation and scheduling of periodic control loops, scheduling under overload, control and scheduling co-design, dynamic task adaptation, feedback scheduling, and scheduling of imprecise calculations. The report also presents the background, motivation, and research topics in the ARTES project Integrated Control and Scheduling.

  18. From "does it work?" to "what is 'it'?": implications for voodoo, psychotherapy, pop-psychology, regular, and alternative medicine.

    Mommaerts, Jean-Luc; Devroey, Dirk


    In this article, a "healing method" (HM) is defined as any method intended to improve health through non-somatic means. For many healing methods, especially within the realm of complementary and alternative medicine (CAM), there is mounting debate over the question "Does it work?" Indeed, this seems to be the primary question for most stakeholders. Yet in light of the well-documented effects of nonspecific factors, particularly empathy and placebo (EP), we contend that the basic question is: "What is 'it'?" Without answering this question, scientific progress is impossible, and research costs will spiral upwards without producing tangible results. Furthermore, it is impossible to characterize the potential side effects of healing methods without a full understanding of the underlying mechanisms through which they act. It is generally acknowledged that many healing methods are sociohistorical artifacts, based on underlying theoretical models that are divorced from established science. There is a need for healing method research that is accommodating of such methods' fluid nature while being congruent with accepted scientific practices. "It works" is no longer an adequate justification for any healing method, as "it" often turns out to be a combination of nonspecific factors. PMID:23974507

  19. A Scheduling Problem for Hospital Operating Theatre

    Sufahani, Suliadi F; Ismail, Zuhaimy


    This paper provides a classification of real scheduling problems. Various ways have been examined and described on the problem. Scheduling problem faces a tremendous challenges and difficulties in order to meet the preferences of the consumer. Dealing with scheduling problem is complicated, inefficient and time-consuming. This study aims to develop a mathematical model for scheduling the operating theatre during peak and off peak time. Scheduling problem is a well known optimization problem and the goal is to find the best possible optimal solution. In this paper, we used integer linear programming technique for scheduling problem in a high level of synthesis. In addition, time and resource constrained scheduling was used. An optimal result was fully obtained by using the software GLPK/AMPL. This model can be adopted to solve other scheduling problems, such as the Lecture Theatre, Cinemas and Work Shift.

  20. [Spanish version of the new World Health Organization Disability Assessment Schedule II (WHO-DAS-II): initial phase of development and pilot study. Cantabria disability work group].

    Vázquez-Barquero, J L; Vázquez Bourgón, E; Herrera Castanedo, S; Saiz, J; Uriarte, M; Morales, F; Gaite, L; Herrán, A; Ustün, T B


    The aim of the present paper is to present the initial phases of the development of the Spanish version of the "World Health Organization Disablement Assessment Schedule II" WHO-DAS-II and also to describe the quantitative and qualitative methodological strategies used in the elaboration process of an instrument: i) compatible with the new International Classification of Functioning and Disability -ICIDH-2- of the World Health Organisation; ii) with criteria of cross-cultural applicability and; iii) to allow us to assess the disability in all its dimensions. PMID:10937388

  1. Scheduling By Using Fuzzy Logic in Manufacturing

    Miss. Ashwini. A. Mate


    Full Text Available This paper represents the scheduling process in furniture manufacturing unit. It gives the fuzzy logic application in flexible manufacturing system. Flexible manufacturing systems are production system in furniture manufacturing unit. FMS consist of same multipurpose numerically controlled machines. Here in this project the scheduling has been done in FMS by using fuzzy logic tool in Matlab software. The fuzzy logic based scheduling model in this paper will deals with the job and best alternative route selection with multi-criteria of machine. Here two criteria for job and sequencing and routing with rules. This model is applicable to the scheduling of any manufacturing industry.

  2. TRU Waste Management Program cost/schedule optimization analysis

    Detamore, J.A. (Rockwell International Corp., Albuquerque, NM (United States). Joint Integration Office); Raudenbush, M.H.; Wolaver, R.W.; Hastings, G.A. (Stoller (S.M.) Corp., Boulder, CO (United States))


    The cost/schedule optimization task is a necessary function to insure that program goals and plans are optimized from a cost and schedule aspect. Results of this study will offer DOE information with which it can establish, within institutional constraints, the most efficient program for the long-term management and disposal of contact handled transuranic waste (CH-TRU). To this end, a comprehensive review of program cost/schedule tradeoffs has been made, to identify any major cost saving opportunities that may be realized by modification of current program plans. It was decided that all promising scenarios would be explored, and institutional limitations to implementation would be described. Since a virtually limitless number of possible scenarios can be envisioned, it was necessary to distill these possibilities into a manageable number of alternatives. The resultant scenarios were described in the cost/schedule strategy and work plan document. Each scenario was compared with the base case: waste processing at the originating site; transport of CH-TRU wastes in TRUPACT; shipment of drums in 6-Packs; 25 year stored waste workoff; WIPP operational 10/88, with all sites shipping to WIPP beginning 10/88; and no processing at WIPP. Major savings were identified in two alternate scenarios: centralize waste processing at INEL and eliminate rail shipment of TRUPACT. No attempt was made to calculate savings due to combination of scenarios. 1 ref., 5 figs., 1 tab. (MHB)

  3. Widening the Schedulability Hierarchical Scheduling Systems

    Boudjadar, Jalil; David, Alexandre; Kim, Jin Hyun; Larsen, Kim Guldstrand; Mikučionis, Marius; Nyman, Ulrik; Skou, Arne


    This paper presents a compositional approach for schedula-bility analysis of hierarchical systems, which enables to prove more sys-tems schedulable by having richer and more detailed scheduling models.We use a lightweight method (statistical model checking) for design ex-ploration, easily assuring high confidence in the correctness of the model.A satisfactory design can be proved schedulable using the computationcostly method (symbolic model checking). In order to analyze a hierar-chical sche...

  4. Planning and scheduling - A schedule's performance

    Planning and scheduling is a process whose time has come to PSI Energy. With an awareness of the challenges ahead, individuals must look for ways to enhance the corporate competitiveness. Working toward this goal means that each individual has to dedicate themselves to this more competitive corporate environment. Being competitive may be defined as the ability of each employee to add value to the corporation's economic well being. The timely and successful implementation of projects greatly enhances competitiveness. Those projects that do not do well often suffer from lack of proper execution - not for lack of talent or strategic vision. Projects are consumers of resources such as cash and people. They produce a return when completed and will generate a better return when properly completed utilizing proven project management techniques. Completing projects on time, within budget and meeting customer expectations is the way a corporation builds it's future. This paper offers suggestions on implementing planning and scheduling and provides a review of results in the form of management reports

  5. Application of workflow technology for workshop scheduling

    ZHOU Wan-kun; ZHU Jian-ying


    This paper attempts to solve the complexity of scheduling problems and meet the requirement of the ever-changing manufacturing environment. In this paper, a new Workflow-Based Scheduling System (WBSS) is proposed. The integration of Workflow Management System (WfMS) and rule-based scheduler provides us an effective way of generating a task-sheet according to the states of system and the scheduled objects. First, the definition of workflow model for scheduling is proposed, and following are the architecture and mechanism of the proposed WBSS. At last, an application is given to show how the established system works.

  6. Maximum-throughput scheduling with limited resources for iterative data-flow graphs by means of the scheduling-range chart

    Heemstra de Groot, Sonia M.; Herrmann, Otto E.


    An algorithm based on an alternative scheduling approach for iterative acyclic and cyclid DFGs (data-flow graphs) with limited resources that exploits inter- and intra-iteration parallelism is presented. The method is based on guiding the scheduling algorithm with the information supplied by a scheduling-range chart. This scheduling range is relative to a reference operation and can be finite or infinite. The information in the scheduling-range chart is used during scheduling in order to opti...


    A.Neela Madheswari; R. S. D. Wahida Banu


    In the area of Computer Science, Parallel job scheduling is an important field of research. Finding a best suitable processor on the high performance or cluster computing for user submitted jobs plays animportant role in measuring system performance. A new scheduling technique called communication aware scheduling is devised and is capable of handling serial jobs, parallel jobs, mixed jobs and dynamic jobs.This work focuses the comparison of communication aware scheduling with the available p...

  8. Customer Appeasement Scheduling

    Nikseresht, Mohammad R; Maheshwari, Anil


    Almost all of the current process scheduling algorithms which are used in modern operating systems (OS) have their roots in the classical scheduling paradigms which were developed during the 1970's. But modern computers have different types of software loads and user demands. We think it is important to run what the user wants at the current moment. A user can be a human, sitting in front of a desktop machine, or it can be another machine sending a request to a server through a network connection. We think that OS should become intelligent to distinguish between different processes and allocate resources, including CPU, to those processes which need them most. In this work, as a first step to make the OS aware of the current state of the system, we consider process dependencies and interprocess communications. We are developing a model, which considers the need to satisfy interactive users and other possible remote users or customers, by making scheduling decisions based on process dependencies and interproce...

  9. Alternative cathodes based on iron phthalocyanine catalysts for mini- or micro-DMFC working at room temperature

    Iron phthalocyanine based cathodes were prepared either by dispersion of FePc on carbon or by electropolymerization of aniline in presence of FeTsPc. The macrocycles based cathodes were compared to a classical commercial Pt/C cathode in a standard three-electrode electrochemical cell and under DMFC conditions at room temperature. It was shown that the molecular dispersion of FeTsPc into a PAni film greatly enhances the activity of the macrocycle catalyst towards oxygen reduction reaction (ORR). But, in the same time, the stability under DMFC conditions is drastically decreased compared to the stability obtained with a FePc/C electrode. It was suggested that this instability of the catalytic film was rather due to the release of the FeTsPc from the polymer than to the destruction of the macrocycle active centre. Even if iron phthalocyanine catalysts display total tolerance to methanol when the anode is fed with a 5 M methanol solution, the comparison between a PAni-FeTsPc/C cathode and a Pt/C cathode in DMFC working conditions is in favor of the Pt/C cathode, in term of maximum achieved power density. However, the ratio (platinum atoms per cm2/number of FeTsPc molecules per cm2) is close to 100, which allows to be optimistic for further enhancement of activity of polymer-FeTsPc electrodes. It was suggested that researches to develop new electron conductive polymers stable under oxidative environment and with a high doping capacity could be a direction to use platinum alternative cathode catalysts in DMFC technology

  10. Scheduling (Dagstuhl Seminar 13111)

    Albers, Susanne; Boxma, Onno J.; Pruhs, Kirk


    This report documents the program and the outcomes of Dagstuhl Seminar 13111 "Scheduling". The primary objective of the seminar is to facilitate dialog and collaboration between researchers in two different mathematically-oriented scheduling research communities, the stochastic scheduling and queuing community, and the worst-case approximation scheduling community.

  11. Optimizing Music Learning: Exploring How Blocked and Interleaved Practice Schedules Affect Advanced Performance

    Carter, Christine E.; Grahn, Jessica A.


    Repetition is the most commonly used practice strategy by musicians. Although blocks of repetition continue to be suggested in the pedagogical literature, work in the field of cognitive psychology suggests that repeated events receive less processing, thereby reducing the potential for long-term learning. Motor skill learning and sport psychology research offer an alternative. Instead of using a blocked practice schedule, with practice completed on one task before moving on to the next task, an interleaved schedule can be used, in which practice is frequently alternated between tasks. This frequent alternation involves more effortful processing, resulting in increased long-term learning. The finding that practicing in an interleaved schedule leads to better retention than practicing in a blocked schedule has been labeled the “contextual interference effect.” While the effect has been observed across a wide variety of fields, few studies have researched this phenomenon in a music-learning context, despite the broad potential for application to music practice. This study compared the effects of blocked and interleaved practice schedules on advanced clarinet performance in an ecologically valid context. Ten clarinetists were given one concerto exposition and one technical excerpt to practice in a blocked schedule (12 min per piece) and a second concerto exposition and technical excerpt to practice in an interleaved schedule (3 min per piece, alternating until a total of 12 min of practice were completed on each piece). Participants sight-read the four pieces prior to practice and performed them at the end of practice and again one day later. The sight-reading and two performance run-throughs of each piece were recorded and given to three professional clarinetists to rate using a percentage scale. Overall, whenever there was a ratings difference between the conditions, pieces practiced in the interleaved schedule were rated better than those in the blocked schedule

  12. Optimizing Music Learning: Exploring How Blocked and Interleaved Practice Schedules Affect Advanced Performance.

    Carter, Christine E; Grahn, Jessica A


    Repetition is the most commonly used practice strategy by musicians. Although blocks of repetition continue to be suggested in the pedagogical literature, work in the field of cognitive psychology suggests that repeated events receive less processing, thereby reducing the potential for long-term learning. Motor skill learning and sport psychology research offer an alternative. Instead of using a blocked practice schedule, with practice completed on one task before moving on to the next task, an interleaved schedule can be used, in which practice is frequently alternated between tasks. This frequent alternation involves more effortful processing, resulting in increased long-term learning. The finding that practicing in an interleaved schedule leads to better retention than practicing in a blocked schedule has been labeled the "contextual interference effect." While the effect has been observed across a wide variety of fields, few studies have researched this phenomenon in a music-learning context, despite the broad potential for application to music practice. This study compared the effects of blocked and interleaved practice schedules on advanced clarinet performance in an ecologically valid context. Ten clarinetists were given one concerto exposition and one technical excerpt to practice in a blocked schedule (12 min per piece) and a second concerto exposition and technical excerpt to practice in an interleaved schedule (3 min per piece, alternating until a total of 12 min of practice were completed on each piece). Participants sight-read the four pieces prior to practice and performed them at the end of practice and again one day later. The sight-reading and two performance run-throughs of each piece were recorded and given to three professional clarinetists to rate using a percentage scale. Overall, whenever there was a ratings difference between the conditions, pieces practiced in the interleaved schedule were rated better than those in the blocked schedule

  13. Operating System Process Schedulers



    Process scheduling is one of the key tasks of every operating system. Proper implementation of a scheduler reflects itself in a system responsiveness, especially when processes require execution in real-time. Multimedia playback is one of these processes, also being one of the most common operating system tasks nowadays. In the beginning of this thesis, I present theoretical basics of scheduling: its goals, different scheduling types and basics algorithms. I cover scheduling in single-proces...

  14. Dynamic Fractional Resource Scheduling vs. Batch Scheduling

    Casanova, Henri; Vivien, Frédéric


    We propose a novel job scheduling approach for homogeneous cluster computing platforms. Its key feature is the use of virtual machine technology to share fractional node resources in a precise and controlled manner. Other VM-based scheduling approaches have focused primarily on technical issues or on extensions to existing batch scheduling systems, while we take a more aggressive approach and seek to find heuristics that maximize an objective metric correlated with job performance. We derive absolute performance bounds and develop algorithms for the online, non-clairvoyant version of our scheduling problem. We further evaluate these algorithms in simulation against both synthetic and real-world HPC workloads and compare our algorithms to standard batch scheduling approaches. We find that our approach improves over batch scheduling by orders of magnitude in terms of job stretch, while leading to comparable or better resource utilization. Our results demonstrate that virtualization technology coupled with light...


    Ladislav Rosocha; Silvia Vernerova; Robert Verner


    Purpose: The efficiency of medical staff is a fundamental feature of healthcare facilities quality. Therefore the better implementation of their preferences into the scheduling problem might not only rise the work-life balance of doctors and nurses, but also may result into better patient care. This paper focuses on optimization of medical staff preferences considering the scheduling problem. Methodology/Approach: We propose a medical staff scheduling algorithm based on simulated annealing, a...


    Ladislav Rosocha; Silvia Vernerova; Robert Verner


    Purpose: The efficiency of medical staff is a fundamental feature of healthcare facilities quality. Therefore the better implementation of their preferences into the scheduling problem might not only rise the work-life balance of doctors and nurses, but also may result into better patient care. This paper focuses on optimization of medical staff preferences considering the scheduling problem.Methodology/Approach: We propose a medical staff scheduling algorithm based on simulated annealing, a ...

  17. Efficient generation of rotating workforce schedules

    Musliu, Nysret; Gaertner, Johannes; Slany, Wolfgang


    Generating high-quality schedules for a rotating workforce is a critical task in all settings where a certain staffing level must be guaranteed beyond the capacity of single employees, such as for instance in industrial plants, hospitals, or airline companies. Results from ergonomics \\cite{BEST91} indicate that rotating workforce schedules have a profound impact on the health and social life of employees as well as on their performance at work. Moreover, rotating workforce schedules must sati...

  18. A hybrid job-shop scheduling system

    Hellingrath, Bernd; Robbach, Peter; Bayat-Sarmadi, Fahid; Marx, Andreas


    The intention of the scheduling system developed at the Fraunhofer-Institute for Material Flow and Logistics is the support of a scheduler working in a job-shop. Due to the existing requirements for a job-shop scheduling system the usage of flexible knowledge representation and processing techniques is necessary. Within this system the attempt was made to combine the advantages of symbolic AI-techniques with those of neural networks.

  19. Widening the Schedulability Hierarchical Scheduling Systems

    Boudjadar, Jalil; David, Alexandre; Kim, Jin Hyun;


    This paper presents a compositional approach for schedula- bility analysis of hierarchical systems, which enables to prove more sys- tems schedulable by having richer and more detailed scheduling models. We use a lightweight method (statistical model checking) for design ex- ploration, easily...... assuring high confidence in the correctness of the model. A satisfactory design can be proved schedulable using the computation costly method (symbolic model checking). In order to analyze a hierar- chical scheduling system compositionally, we introduce the notion of a stochastic supplier modeling the...... supply of resources in each component. We specifically investigate two different techniques to widen the set of provably schedulable systems: 1) a new supplier model; 2) restricting the potential task offsets. We also provide a way to estimate the minimum resource supply (budget) that a component is...

  20. Dedicated heterogeneous node scheduling including backfill scheduling

    Wood, Robert R.; Eckert, Philip D.; Hommes, Gregg


    A method and system for job backfill scheduling dedicated heterogeneous nodes in a multi-node computing environment. Heterogeneous nodes are grouped into homogeneous node sub-pools. For each sub-pool, a free node schedule (FNS) is created so that the number of to chart the free nodes over time. For each prioritized job, using the FNS of sub-pools having nodes useable by a particular job, to determine the earliest time range (ETR) capable of running the job. Once determined for a particular job, scheduling the job to run in that ETR. If the ETR determined for a lower priority job (LPJ) has a start time earlier than a higher priority job (HPJ), then the LPJ is scheduled in that ETR if it would not disturb the anticipated start times of any HPJ previously scheduled for a future time. Thus, efficient utilization and throughput of such computing environments may be increased by utilizing resources otherwise remaining idle.

  1. A Flexible Nurse Scheduling Support System

    Ozkarahan, Irem


    Scheduling nursing personnel in hospitals is very complex because of the variety of conflicting interests and objectives. Also, demand varies 24-hour a day 7-day a week, is skill specific and hard to forecast. In the face of this complexity, the present nurse scheduling models have met with little success. In this paper, we propose a more flexible decision support system that will satisfy the interests of both hospitals and nurses through alternative models that attempt to accommodate flexibl...

  2. Automated Scheduling of Personnel to Staff Operations for the Mars Science Laboratory

    Knight, Russell; Mishkin, Andrew; Allbaugh, Alicia


    Leveraging previous work on scheduling personnel for space mission operations, we have adapted ASPEN (Activity Scheduling and Planning Environment) [1] to the domain of scheduling personnel for operations of the Mars Science Laboratory. Automated scheduling of personnel is not new. We compare our representations to a sampling of employee scheduling systems available with respect to desired features. We described the constraints required by MSL personnel schedulers and how each is handled by the scheduling algorithm.

  3. Scheduling Network Traffic for Grid Purposes

    Gamst, Mette

    This thesis concerns scheduling of network traffic in grid context. Grid computing consists of a number of geographically distributed computers, which work together for solving large problems. The computers are connected through a network. When scheduling job execution in grid computing, data...

  4. Childhood Immunization Schedule

    ... Why Immunize? Vaccines: The Basics Instant Childhood Immunization Schedule Recommend on Facebook Tweet Share Compartir Get the ... See Disclaimer for additional details. Based on Immunization Schedule for Children 0 through 6 Years of age ...

  5. Fair Scheduling in Networks Through Packet Election

    Jagabathula, Srikanth


    We consider the problem of designing a fair scheduling algorithm for discrete-time constrained queuing networks. Each queue has dedicated exogenous packet arrivals. There are constraints on which queues can be served simultaneously. This model effectively describes important special instances like network switches, interference in wireless networks, bandwidth sharing for congestion control and traffic scheduling in road roundabouts. Fair scheduling is required because it provides isolation to different traffic flows; isolation makes the system more robust and enables providing quality of service. Existing work on fairness for constrained networks concentrates on flow based fairness. As a main result, we describe a notion of packet based fairness by establishing an analogy with the ranked election problem: packets are voters, schedules are candidates and each packet ranks the schedules based on its priorities. We then obtain a scheduling algorithm that achieves the described notion of fairness by drawing upon ...

  6. AVLIS production plant project schedule and milestones

    An AVLIS Production Plant Deployment Schedule for the engineering, procurement, and construction for both the Initial Increment of Production and the fully Activated Plant, has been developed by the project team consisting of Lawrence Livermore National Laboratory, Martin Marietta Energy Systems, Inc. with architect-engineer support from Bechtel National, Inc., Stone and Webster Engineering Corporation, and Westinghouse Corporation. The initial deployment phase consists of six separators modules and the three laser power amplifier modules consistent with the FY84 reference design with a name plate capacity of 5 million separative work units/yr followed by a full plant activation to approximately 13 million separative work units/yr. The AVLIS Production Plant project team's strategy for deployment schedule analysis focused on three schedule options: engineering limited schedule; authorization limited schedule; and funding limited project schedule. The three deployment schedule options developed by AVLIS project team have been classified in ranges such as an optimistic, rapid/moderate, or moderate/pessimistic based on the probability of meeting the individual schedule option's major milestones or program objectives of enriching uranium by the AVLIS process in an effective cost and schedule manner. 47 figures, 7 tables

  7. Scheduling in polling systems

    Wierman, AC; Winands, EMM Erik; Boxma, OJ Onno


    We present a simple mean value analysis (MVA) framework for analyzing the effect of scheduling within queues in classical asymmetric polling systems with gated or exhaustive service. Scheduling in polling systems finds many applications in computer and communication systems. Our framework leads not only to unification but also to extension of the literature studying scheduling in polling systems. It illustrates that a large class of scheduling policies behaves similarly in the exhaustive poll...

  8. Reinforcement learning in scheduling

    Dietterich, Tom G.; Ok, Dokyeong; Zhang, Wei; Tadepalli, Prasad


    The goal of this research is to apply reinforcement learning methods to real-world problems like scheduling. In this preliminary paper, we show that learning to solve scheduling problems such as the Space Shuttle Payload Processing and the Automatic Guided Vehicle (AGV) scheduling can be usefully studied in the reinforcement learning framework. We discuss some of the special challenges posed by the scheduling domain to these methods and propose some possible solutions we plan to implement.

  9. Scheduling PVM Tasks

    鞠九滨; 王勇; 等


    This paper describes a PVM task scheduler designed and implemented by the authors.The scheduler supports selecting idle workstations,scheduling pool tasks and dynamically produced subtasks.It can improve resource utilization,reduce job response time and simplify programming.

  10. Endogenous scheduling preferences and congestion

    Fosgerau, Mogens; Small, Kenneth


    Dynamic models of congestion so far rely on exogenous scheduling preferences of travelers, based for example on disutility of deviation from a preferred departure or arrival time for a trip. This paper provides a more fundamental view in which travelers derive utility just from consumption and...... leisure, but agglomeration economies at home and at work lead to scheduling preferences forming endogenously. Using bottleneck congestion technology, we obtain an equilibrium queuing pattern consistent with a general version of the Vickrey bottleneck model. However, the policy implications are different....... Compared to the predictions of an analyst observing untolled equilibrium and taking scheduling preferences as exogenous, we find that both the optimal capacity and the marginal external cost of congestion have changed. The benefits of tolling are greater, and the optimal time varying toll is different....

  11. Batch Scheduling a Fresh Approach

    Cardo, Nicholas P.; Woodrow, Thomas (Technical Monitor)


    The Network Queueing System (NQS) was designed to schedule jobs based on limits within queues. As systems obtain more memory, the number of queues increased to take advantage of the added memory resource. The problem now becomes too many queues. Having a large number of queues provides users with the capability to gain an unfair advantage over other users by tailoring their job to fit in an empty queue. Additionally, the large number of queues becomes confusing to the user community. The High Speed Processors group at the Numerical Aerodynamics Simulation (NAS) Facility at NASA Ames Research Center developed a new approach to batch job scheduling. This new method reduces the number of queues required by eliminating the need for queues based on resource limits. The scheduler examines each request for necessary resources before initiating the job. Also additional user limits at the complex level were added to provide a fairness to all users. Additional tools which include user job reordering are under development to work with the new scheduler. This paper discusses the objectives, design and implementation results of this new scheduler

  12. Multiuser switched diversity scheduling schemes

    Shaqfeh, Mohammad


    Multiuser switched-diversity scheduling schemes were recently proposed in order to overcome the heavy feedback requirements of conventional opportunistic scheduling schemes by applying a threshold-based, distributed, and ordered scheduling mechanism. The main idea behind these schemes is that slight reduction in the prospected multiuser diversity gains is an acceptable trade-off for great savings in terms of required channel-state-information feedback messages. In this work, we characterize the achievable rate region of multiuser switched diversity systems and compare it with the rate region of full feedback multiuser diversity systems. We propose also a novel proportional fair multiuser switched-based scheduling scheme and we demonstrate that it can be optimized using a practical and distributed method to obtain the feedback thresholds. We finally demonstrate by numerical examples that switched-diversity scheduling schemes operate within 0.3 bits/sec/Hz from the ultimate network capacity of full feedback systems in Rayleigh fading conditions. © 2012 IEEE.

  13. PROMSYS, Plant Equipment Maintenance and Inspection Scheduling

    1 - Description of problem or function: PROMSYS is a computer system designed to automate the scheduling of routine maintenance and inspection of plant equipment. This 'programmed maintenance' provides the detailed planning and accomplishment of lubrication, inspection, and similar repetitive maintenance activities which can be scheduled at specified predetermined intervals throughout the year. The equipment items included are the typical pumps, blowers, motors, compressors, automotive equipment, refrigeration units, filtering systems, machine shop equipment, cranes, elevators, motor-generator sets, and electrical switchgear found throughout industry, as well as cell ventilation, shielding, containment, and material handling equipment unique to nuclear research and development facilities. Four related programs are used to produce sorted schedule lists, delinquent work lists, and optional master lists. Five additional programs are used to create and maintain records of all scheduled and unscheduled maintenance history. 2 - Method of solution: Service specifications and frequency are established and stored. The computer program reviews schedules weekly and prints, on schedule cards, instructions for service that is due the following week. The basic output from the computer program comes in two forms: programmed-maintenance schedule cards and programmed-maintenance data sheets. The data sheets can be issued in numerical building, route, and location number sequence as equipment lists, grouped for work assigned to a particular foreman as the foreman's equipment list, or grouped by work charged to a particular work order as the work-order list. Data sheets grouped by equipment classification are called the equipment classification list

  14. Schedule-Aware Workflow Management Systems

    Mans, Ronny S.; Russell, Nick C.; van der Aalst, Wil M. P.; Moleman, Arnold J.; Bakker, Piet J. M.

    Contemporary workflow management systems offer work-items to users through specific work-lists. Users select the work-items they will perform without having a specific schedule in mind. However, in many environments work needs to be scheduled and performed at particular times. For example, in hospitals many work-items are linked to appointments, e.g., a doctor cannot perform surgery without reserving an operating theater and making sure that the patient is present. One of the problems when applying workflow technology in such domains is the lack of calendar-based scheduling support. In this paper, we present an approach that supports the seamless integration of unscheduled (flow) and scheduled (schedule) tasks. Using CPN Tools we have developed a specification and simulation model for schedule-aware workflow management systems. Based on this a system has been realized that uses YAWL, Microsoft Exchange Server 2007, Outlook, and a dedicated scheduling service. The approach is illustrated using a real-life case study at the AMC hospital in the Netherlands. In addition, we elaborate on the experiences obtained when developing and implementing a system of this scale using formal techniques.

  15. Garbage Collection Scheduling of Aperiodic Tasks

    Ning Zhang; Guang-Ze Xiong


    In the previous work of garbage collection (GC) models, scheduling analysis was given based on an assumption that there were no aperiodic mutator tasks. However, it is not true in practical real-time systems. The GC algorithm which can schedule aperiodic tasks is proposed, and the variance of live memory is analyzed. In this algorithm, active tasks are deferred to be processed by GC until the states of tasks become inactive, and the saved sporadic server time can be used to schedule aperiodic tasks. Scheduling the sample task sets demonstrates that this algorithm in this paper can schedule aperiodic tasks and decrease GC work. Thus, the GC algorithm proposed is more flexible and portable.

  16. DSN Scheduling Engine

    Clement, Bradley; Johnston, Mark; Wax, Allan; Chouinard, Caroline


    The DSN (Deep Space Network) Scheduling Engine targets all space missions that use DSN services. It allows clients to issue scheduling, conflict identification, conflict resolution, and status requests in XML over a Java Message Service interface. The scheduling requests may include new requirements that represent a set of tracks to be scheduled under some constraints. This program uses a heuristic local search to schedule a variety of schedule requirements, and is being infused into the Service Scheduling Assembly, a mixed-initiative scheduling application. The engine resolves conflicting schedules of resource allocation according to a range of existing and possible requirement specifications, including optional antennas; start of track and track duration ranges; periodic tracks; locks on track start, duration, and allocated antenna; MSPA (multiple spacecraft per aperture); arraying/VLBI (very long baseline interferometry)/delta DOR (differential one-way ranging); continuous tracks; segmented tracks; gap-to-track ratio; and override or block-out of requirements. The scheduling models now include conflict identification for SOA(start of activity), BOT (beginning of track), RFI (radio frequency interference), and equipment constraints. This software will search through all possible allocations while providing a best-effort solution at any time. The engine reschedules to accommodate individual emergency tracks in 0.2 second, and emergency antenna downtime in 0.2 second. The software handles doubling of one mission's track requests over one week (to 42 total) in 2.7 seconds. Further tests will be performed in the context of actual schedules.

  17. Age-sensitive effects of enduring work with alternating cognitive and physical load. A study applying mobile EEG in a real life working scenario

    Edmund Wascher


    Full Text Available Ergonomic assessment of a workplace requires the evaluation of physical as well as cognitive aspects of a particular working situation. In particular the latter is hardly possible without interfering in the natural setting. Mobile acquisition of neurophysiological measures (such as parameters of the EEG may close this gap. At a simulated workplace we tracked older and younger participants with mobile EEG during a 4-5 hours work shift. They had to perform either a monotonous cognitive task, a self-paced cognitive task or a self-paced physical task in a predefined order. Self assessment, behavioral performance and spectral measures of the EEG (before most alpha power indicated that younger participants suffered from monotony. Older adults, on the other hand, were overall impaired by inefficient information processing. This was visible in EEG variations time-locked to eye blinks (blink-related synchronizations, a new measure to investigate cognitive processing in real life environments. Thus, we were able to distinguish between active and passive task-related aspects of mental fatigue without impinging on the natural working situation.

  18. Mixed-Integer Formulations for Constellation Scheduling

    Valicka, C.; Hart, W.; Rintoul, M.

    Remote sensing systems have expanded the set of capabilities available for and critical to national security. Cooperating, high-fidelity sensing systems and growing mission applications have exponentially increased the set of potential schedules. A definitive lack of advanced tools places an increased burden on operators, as planning and scheduling remain largely manual tasks. This is particularly true in time-critical planning activities where operators aim to accomplish a large number of missions through optimal utilization of single or multiple sensor systems. Automated scheduling through identification and comparison of alternative schedules remains a challenging problem applicable across all remote sensing systems. Previous approaches focused on a subset of sensor missions and do not consider ad-hoc tasking. We have begun development of a robust framework that leverages the Pyomo optimization modeling language for the design of a tool to assist sensor operators planning under the constraints of multiple concurrent missions and uncertainty. Our scheduling models have been formulated to address the stochastic nature of ad-hoc tasks inserted under a variety of scenarios. Operator experience is being leveraged to select appropriate model objectives. Successful development of the framework will include iterative development of high-fidelity mission models that consider and expose various schedule performance metrics. Creating this tool will aid time-critical scheduling by increasing planning efficiency, clarifying the value of alternative modalities uniquely provided by multi-sensor systems, and by presenting both sets of organized information to operators. Such a tool will help operators more quickly and fully utilize sensing systems, a high interest objective within the current remote sensing operations community. Preliminary results for mixed-integer programming formulations of a sensor scheduling problem will be presented. Assumptions regarding sensor geometry

  19. Tax Rates and Work Incentives in the Social Security Disability Insurance Program: Current Law and Alternative Reforms

    Hoynes, Hilary Williamson; Moffitt, Robert


    The Social Security Disability Insurance (SSDI) Program has long been criticized by economists for its apparent work disincentives stemming from the imposition of 100 percent tax rates on earnings. However, the program has been modified in recent years to allow recipients to keep some of their earnings for fixed periods of time. Moreover, additional proposals have been made for lowering the tax rate further and for providing various additional financial work incentives. We use the basic labor...

  20. Schedule control in Ling Ao nuclear power project

    Ling Ao Nuclear Power Station (LANP) is first one built up by self-reliance in China with power capacity 990x2 MWe. The results of quality control, schedule control and cost control are satisfactory. The commercial operation days of Unit 1 and Unit 2 were 28th May 2002 and 8th Jan. 2003 respectively, which were 48 days and 66 days in advance of the project schedule. This paper presents the practices of self-reliance schedule control system in LANP. The paper includes 10 sections: schedule control system; targets of schedule control; schedule control at early stage of project; construction schedule; scheduling practice; Point curves; schedule control of design and procurement; a good practice of construction schedule control on site; commissioning and startup schedule; schedule control culture. Three figures are attached. The main contents of the self-reliance schedule control system are as follows: to draw up reasonable schedules and targets; to setup management mechanism and procedures; to organize powerful project management team; to establish close monitoring system; to provide timely progress reports and statistics information. Five kinds of schedule control targets are introduced, i.e. bar-chart schedule; milesones; Point curves; interface management; hydraulic test schedule of auxiliary piping loops; EMR/EMC/EESR issuance schedules. Six levels of bar-chart schedules were adopted in LANP, but the bar-chart schedules were not satisfactory for complicated erection condition on site, even using six levels of schedules. So a kind of Point curves was developed and their advantages are explained. Scheduling method of three elements: activity, duration, logic, which was adopted in LANP, is introduced. The duration of each piping activities in LANP level 2 project schedule was calculated based on the relevant working Point quantities. The analysis and adjustment of Point curves are illustrated, i.e. balance of monthly quantities; possible production in the peakload


    HU Yanhai; YAN Junqi; MA Bengzhe; YE Feifan; ZHANG Jie


    A new concept of multi-shop (M) is put forward which contains all basic shops including open shop (O), job shop (J), flow shop (F) and hybrid flow shop (H) so that these basic shop can be scheduled together. Several algorithms including ant colony optimization (ACO), most work remaining (MWR), least work remaining (LWR), longest processing time (LPT) and shortest processing time (SPT) are used for scheduling the M. Numerical experiments of the M adopting data of some car and reC series benchmark instances are tested. The results show that the ACO algorithm has better performance for scheduling the M than the other algorithms, if minimizing the makespan ( C*max ) is taken as the objective function. As a comparison, the separate shops contained in the M are also scheduled by the ACO algorithm for the same objective function, when the completing time of the jobs in the previous shop is taken as the ready time of these jobs in the following shop. The results show that the Mhas the advantage of shortening the makespan upon separate shops.


    Ladislav Rosocha


    Full Text Available Purpose: The efficiency of medical staff is a fundamental feature of healthcare facilities quality. Therefore the better implementation of their preferences into the scheduling problem might not only rise the work-life balance of doctors and nurses, but also may result into better patient care. This paper focuses on optimization of medical staff preferences considering the scheduling problem.Methodology/Approach: We propose a medical staff scheduling algorithm based on simulated annealing, a well-known method from statistical thermodynamics. We define hard constraints, which are linked to legal and working regulations, and minimize the violations of soft constraints, which are related to the quality of work, psychic, and work-life balance of staff.Findings: On a sample of 60 physicians and nurses from gynecology department we generated monthly schedules and optimized their preferences in terms of soft constraints. Our results indicate that the final value of objective function optimized by proposed algorithm is more than 18-times better in violations of soft constraints than initially generated random schedule that satisfied hard constraints.Research Limitation/implication: Even though the global optimality of final outcome is not guaranteed, desirable solutionwas obtained in reasonable time. Originality/Value of paper: We show that designed algorithm is able to successfully generate schedules regarding hard and soft constraints. Moreover, presented method is significantly faster than standard schedule generation and is able to effectively reschedule due to the local neighborhood search characteristics of simulated annealing.

  3. How community action, science and common sense can work together to develop an alternative way to combat desertification.

    Bethune, Shirley; Schachtschneider, Klaudia


    The Spitzkoppe Community Campsite in western Namibia lies in an area with very limited water resources. Water scarcity places a constraint on community income generation and development opportunities. The existing water resources are overexploited and to ensure future water security, the community must take sustainable water management into consideration in their daily lives and business ventures, including tourism. This has been successfully achieved at the Spitzkoppe Community Campsite through a combination of high community motivation, organisation and action, the involvement of researchers and trainers in water resource management and support from developers. The most appropriate water management solutions were found through ongoing practical testing of different strategies and technologies over two years. This paper presents a case study of a community-based tourist camp at Spitzkoppe and traces the community's progress towards developing an alternative way to combat desertification and a potentially lucrative tourist business. PMID:15641379

  4. Optimal Schedules in Multitask Motor Learning.

    Lee, Jeong Yoon; Oh, Youngmin; Kim, Sung Shin; Scheidt, Robert A; Schweighofer, Nicolas


    Although scheduling multiple tasks in motor learning to maximize long-term retention of performance is of great practical importance in sports training and motor rehabilitation after brain injury, it is unclear how to do so. We propose here a novel theoretical approach that uses optimal control theory and computational models of motor adaptation to determine schedules that maximize long-term retention predictively. Using Pontryagin's maximum principle, we derived a control law that determines the trial-by-trial task choice that maximizes overall delayed retention for all tasks, as predicted by the state-space model. Simulations of a single session of adaptation with two tasks show that when task interference is high, there exists a threshold in relative task difficulty below which the alternating schedule is optimal. Only for large differences in task difficulties do optimal schedules assign more trials to the harder task. However, over the parameter range tested, alternating schedules yield long-term retention performance that is only slightly inferior to performance given by the true optimal schedules. Our results thus predict that in a large number of learning situations wherein tasks interfere, intermixing tasks with an equal number of trials is an effective strategy in enhancing long-term retention. PMID:26890347

  5. Automated telescope scheduling

    Johnston, Mark D.


    With the ever increasing level of automation of astronomical telescopes the benefits and feasibility of automated planning and scheduling are becoming more apparent. Improved efficiency and increased overall telescope utilization are the most obvious goals. Automated scheduling at some level has been done for several satellite observatories, but the requirements on these systems were much less stringent than on modern ground or satellite observatories. The scheduling problem is particularly acute for Hubble Space Telescope: virtually all observations must be planned in excruciating detail weeks to months in advance. Space Telescope Science Institute has recently made significant progress on the scheduling problem by exploiting state-of-the-art artificial intelligence software technology. What is especially interesting is that this effort has already yielded software that is well suited to scheduling groundbased telescopes, including the problem of optimizing the coordinated scheduling of more than one telescope.

  6. Combinatory CPU Scheduling Algorithm

    Saeeda Bibi; Farooque Azam*; Yasir Chaudhry


    Central Processing Unit (CPU) plays a significant role in computer system by transferring its control among different processes. As CPU is a central component, hence it must be used efficiently. Operating system performs an essential task that is known as CPU scheduling for efficient utilization of CPU. CPU scheduling has strong effect on resource utilization as well as overall performance of the system. In this paper, a new CPU scheduling algorithm called Combinatory is proposed that combine...

  7. Introducing Learning Effects in Resource-constrained Project Scheduling

    V. VAN PETEGHEM; Vanhoucke, M; -()


    Learning effects assume that the efficiency of a resource increases with the duration of a task. Although these effects are commonly used in machine scheduling environments, they are rarely used in a project scheduling setting. In this paper, we study and model learning effects in a project scheduling environment and apply the model to the discrete time/resource trade-o_ scheduling problem (DTRTP), where each activity has a _fixed work content for which a set of execution modes (duration/reso...

  8. Scheduling nursing personnel on a microcomputer.

    Liao, C J; Kao, C Y


    Suggests that with the shortage of nursing personnel, hospital administrators have to pay more attention to the needs of nurses to retain and recruit them. Also asserts that improving nurses' schedules is one of the most economic ways for the hospital administration to create a better working environment for nurses. Develops an algorithm for scheduling nursing personnel. Contrary to the current hospital approach, which schedules nurses on a person-by-person basis, the proposed algorithm constructs schedules on a day-by-day basis. The algorithm has inherent flexibility in handling a variety of possible constraints and goals, similar to other non-cyclical approaches. But, unlike most other non-cyclical approaches, it can also generate a quality schedule in a short time on a microcomputer. The algorithm was coded in C language and run on a microcomputer. The developed software is currently implemented at a leading hospital in Taiwan. The response to the initial implementation is quite promising. PMID:10167872

  9. Maximizing versus matching on concurrent variable-interval schedules

    Vyse, Stuart A.; Belke, Terry W


    Maximization and matching predictions were examined for a time-based analogue of the concurrent variable-interval variable-ratio schedule. One alternative was a variable interval whose time base operated relatively independent of the schedule chosen, and the other was a discontinuous variable interval for which timing progressed only when selected. Pigeons switched between schedules by pecking a changeover key. The maximization hypothesis predicts that subjects will show a bias toward the dis...

  10. Dynamic Scheduling on Grid Environments

    Bertogna, Mario Leandro


    The work carried out in the thesis describes efficient virtual environments management. One of the main contributions is a middleware scheduling optimization based on Grid environments. Being the overall goal to get an optimal resource selection plus a coordinate task execution optimization. In particular, the research was related with the interaction between non trivial quality service and tasks distribution issues in meta-organizations. While linking allocation and policies belonging to vir...

  11. Gemcitabine and cisplatin in locally advanced and metastatic bladder cancer; 3- or 4-week schedule?

    Als, Anne Birgitte; Sengeløv, Lisa; Von Der Maase, Hans


    BACKGROUND: Chemotherapy with gemcitabine and cisplatin (GC) is an active regimen in advanced transitional cell carcinoma (TCC). Traditionally, GC has been administered as a 4-week schedule. However, an alternative 3-week schedule may be more feasible. Long-term survival data for the alternative 3......-week schedule and comparisons of the feasibility and toxicity between the two schedules have not previously been published. MATERIAL AND METHODS: We performed a retrospective analysis of patients with stage IV TCC, treated with GC by a standard 4-week or by an alternative 3-week schedule. RESULTS: A...

  12. Scheduling Algorithm for Complex Product Development

    LIUMin; ZHANGLong; WUCheng


    This paper describes the Complex product development project scheduling problem (CPDPSP) with a great number of activities, complicated resource, precedence and calendar constraints. By the conversion of precedence constraint relations, the CPDPSP is simplified. Then, according to the predictive control principle, we propose a new scheduling algorithm Based on prediction (BoP-procedure). In order to get the problem characteristics coming from resource status and precedence constraints of the scheduling problem at the scheduling time, a sub-project is constructed on the basis of a sub-AoN (Activity on node) graph of the project. Then, we use the modified GDH-procedure to solve the sub-project scheduling problem and to obtain the maximum feasible active subset for determining the activity group which satisfies resource, precedence and calendar constraints and has the highest scheduling priority at the scheduling time. Additionaily, we make a great number of numerical computations and compare the performance of BoP-procedure algorithm with those of other scheduling algorithms. Computation results show that the BoP-procedure algorithm is more suitable for the CPDPSP. At last, we discuss briefly future research work in the CPDPSP.

  13. Block Scheduling Revisited.

    Queen, J. Allen


    Successful block scheduling depends on provision of initial and ongoing instructional training. Teaching strategies should vary and include cooperative learning, the case method, the socratic seminar, synectics, concept attainment, the inquiry method, and simulations. Recommendations for maximizing block scheduling are outlined. (Contains 52…

  14. Range Scheduling Aid (RSA)

    Logan, J. R.; Pulvermacher, M. K.


    Range Scheduling Aid (RSA) is presented in the form of the viewgraphs. The following subject areas are covered: satellite control network; current and new approaches to range scheduling; MITRE tasking; RSA features; RSA display; constraint based analytic capability; RSA architecture; and RSA benefits.

  15. Trimester Schedule. Research Brief

    Education Partnerships, Inc., 2012


    Why do a trimester schedule? With the advent of block scheduling, many high schools conducted research on utilizing that plan in a trimester format. There appeared to be three issues that most schools faced: (1) How to provide substantive instructional time that was not fragmented?; (2) How does the school climate contribute positively to…

  16. Estimating exponential scheduling preferences

    Hjorth, Katrine; Börjesson, Maria; Engelson, Leonid;


    Different assumptions about travelers' scheduling preferences yield different measures of the cost of travel time variability. Only few forms of scheduling preferences provide non-trivial measures which are additive over links in transport networks where link travel times are arbitrarily distribu...

  17. Scheduling: Seven Period Day

    Williamson, Ronald


    Driven by stable or declining financial resources many school districts are considering the costs and benefits of a seven-period day. While there is limited evidence that any particular scheduling model has a greater impact on student learning than any other, it is clear that the school schedule is a tool that can significantly impact teacher…

  18. DSN Resource Scheduling

    Wang, Yeou-Fang; Baldwin, John


    TIGRAS is client-side software, which provides tracking-station equipment planning, allocation, and scheduling services to the DSMS (Deep Space Mission System). TIGRAS provides functions for schedulers to coordinate the DSN (Deep Space Network) antenna usage time and to resolve the resource usage conflicts among tracking passes, antenna calibrations, maintenance, and system testing activities. TIGRAS provides a fully integrated multi-pane graphical user interface for all scheduling operations. This is a great improvement over the legacy VAX VMS command line user interface. TIGRAS has the capability to handle all DSN resource scheduling aspects from long-range to real time. TIGRAS assists NASA mission operations for DSN tracking of station equipment resource request processes from long-range load forecasts (ten years or longer), to midrange, short-range, and real-time (less than one week) emergency tracking plan changes. TIGRAS can be operated by NASA mission operations worldwide to make schedule requests for the DSN station equipment.

  19. 2-Layered Architecture of Vague Logic Based Multilevel Queue Scheduler

    Supriya Raheja


    Full Text Available In operating system the decisions which CPU scheduler makes regarding the sequence and length of time the task may run are not easy ones, as the scheduler has only a limited amount of information about the tasks. A good scheduler should be fair, maximizes throughput, and minimizes response time of system. A scheduler with multilevel queue scheduling partitions the ready queue into multiple queues. While assigning priorities, higher level queues always get more priorities over lower level queues. Unfortunately, sometimes lower priority tasks get starved, as the scheduler assures that the lower priority tasks may be scheduled only after the higher priority tasks. While making decisions scheduler is concerned only with one factor, that is, priority, but ignores other factors which may affect the performance of the system. With this concern, we propose a 2-layered architecture of multilevel queue scheduler based on vague set theory (VMLQ. The VMLQ scheduler handles the impreciseness of data as well as improving the starvation problem of lower priority tasks. This work also optimizes the performance metrics and improves the response time of system. The performance is evaluated through simulation using MatLab. Simulation results prove that the VMLQ scheduler performs better than the classical multilevel queue scheduler and fuzzy based multilevel queue scheduler.

  20. "Working and Learning Alternation" Nursing Teaching Mode in Hospital%护理"工学交替"教学模式在医院的实践



    Objective: To explore practical effects of reformed nursing teaching mode "working and learning alternation" performed by hospital and school together. Method: On the foundation of meeting the requirement of major courses, corresponding class featured in hospital and clinical practice teaching, which centered on nursing practice teaching and guided by employment, were administered to students by hospital. Result: Nursing teaching mode "working and learning mode" could effectively help students accumulate clinical work experience, enhance personal communication skills, fully improve comprehensive quality of students and also the scores of nursing licensed exam. Conclusion: Nursing teaching mode "working and learning alternation" demonstrates remarkable advantages in improving students' comprehensive quality, master and application of the knowledge compared with traditional teaching mode of school.%目的:探讨学校与医院联合进行"工学交替"护理教学模式改革的实践效果.方法:医院以护理实践教学为中心,以就业为导向,在满足学校本专业课程的基础上,对学生进行具有医院特色的课堂教学及临床实践教学.结果:"工学交替"的护理教学模式有效促进了学生实际工作经验的积累,增强了学生的人际沟通技巧,全面提高了学生的综合素质,学生护理执业考试成绩大幅提高.结论:"工学交替"的护理教学模式相较于学校传统教学模式在学生的综合素质提高、知识的掌握及运用上都有明显优势.

  1. Android-based sports competition scheduling system

    Ma, Teng


    This report is about building a mobile-based single round-robin sports scheduling system with heuristic methods. Based on the current meta-heuristic methods in sports scheduling, this work did further researches on applying the current algorithms to a mobile platform while guarantee the quality and efficiency. Besides, a new system with the ability to deal with all the possible situations in practical use is proposed. Moreover, a simple user interface is built for the application.

  2. Effects of Block Scheduling

    William R. Veal


    Full Text Available This study examined the effects of a tri-schedule on the academic achievement of students in a high school. The tri-schedule consists of traditional, 4x4 block, and hybrid schedules running at the same time in the same high school. Effectiveness of the schedules was determined from the state mandated test of basic skills in reading, language, and mathematics. Students who were in a particular schedule their freshman year were tested at the beginning of their sophomore year. A statistical ANCOVA test was performed using the schedule types as independent variables and cognitive skill index and GPA as covariates. For reading and language, there was no statistically significant difference in test results. There was a statistical difference mathematics-computation. Block mathematics is an ideal format for obtaining more credits in mathematics, but the block format does little for mathematics achievement and conceptual understanding. The results have content specific implications for schools, administrations, and school boards who are considering block scheduling adoption.

  3. Disk Scheduling: Selection of Algorithm

    Yashvir, S.; Prakash, Om


    The objective of this paper is to take some aspects of disk scheduling and scheduling algorithms. The disk scheduling is discussed with a sneak peak in general and selection of algorithm in particular.

  4. Developing Master Schedule Template for Capital Projects : Case Metso Power Finland

    Koivisto, Susanna


    The purpose of this Final Thesis was to develop the scheduling template used in creating executive project schedules in the case company. The objection of the development work was to create a functional and coherent schedule template based on the case company’s Work Breakdown Structure. This way also the schedule will be connected to the global management system implemented in the case company. Scheduling is linked to other project management areas tightly. To really get a deeper understa...

  5. Fuzzy Priority CPU Scheduling Algorithm

    Bashir Alam; M.N. Doja; R. Biswas; Mansaf Alam


    There are several CPU scheduling algorithms like FCFS, SRTN,RR , priority etc. Scheduling decision of these algorithms are based on parameters which are assumed to be crisp. However, in many circumstances these parameters are vague. The vagueness of these parameters suggests that scheduler should use fuzzy logic in scheduling the jobs. A fuzzy priority CPU scheduling algorithm has been proposed. This proposed algorithm improves the priority based CPU scheduling algorithm as obvious from simul...

  6. CMS Records Schedule

    U.S. Department of Health & Human Services — The CMS Records Schedule provides disposition authorizations approved by the National Archives and Records Administration (NARA) for CMS program-related records...

  7. Clinical Laboratory Fee Schedule

    U.S. Department of Health & Human Services — Outpatient clinical laboratory services are paid based on a fee schedule in accordance with Section 1833(h) of the Social Security Act. The clinical laboratory fee...

  8. Fee Schedules - General Information

    U.S. Department of Health & Human Services — A fee schedule is a complete listing of fees used by Medicare to pay doctors or other providers-suppliers. This comprehensive listing of fee maximums is used to...

  9. DMEPOS Fee Schedule

    U.S. Department of Health & Human Services — The list contains the fee schedule amounts, floors, and ceilings for all procedure codes and payment category, jurisdication, and short description assigned to each...

  10. Physician Fee Schedule Search

    U.S. Department of Health & Human Services — This website is designed to provide information on services covered by the Medicare Physician Fee Schedule (MPFS). It provides more than 10,000 physician services,...

  11. Childhood Vaccine Schedule

    ... Navigation Bar Home Current Issue Past Issues Childhood Vaccine Schedule Past Issues / Spring 2008 Table of Contents ... please turn Javascript on. When to Vaccinate What Vaccine Why Birth (or any age if not previously ...

  12. CERN confirms LHC schedule


    The CERN Council held its 125th session on 20 June. Highlights of the meeting included confirmation that the LHC is on schedule for a 2007 start-up, and the announcement of a new organizational structure in 2004.

  13. Introduction to Scheduling

    Robert, Yves


    Reviewing classical methods, realistic models, and algorithms, this book offers a through introduction to scheduling. Coverage includes fundamental concepts and basic methods, recent research, and applications with a special focus on distributed systems and computational grids. Other topics include online scheduling, stochastic task-resource systems, and platform models. Examples, theorems, and pedagogical proofs create an interactive learning format. Though rigorous, the book provides enough background to be self-contained and fully accessible to computer scientists, mathematicians, and resea

  14. Business Service Scheduling

    Jürgen Dorn


    The management and predictive planning of the processes to create business services is more difficult than the planning of production processes, because services cannot be produced in stock and customers are involved in their creation. In this paper, the author proposes a method for service scheduling and optimization based on an ontology to describe business services and related concepts. The author schedules operations required to create a service. With each service process and its operatio...

  15. ATLAS construction schedule

    Kotamaki, M

    The goal during the last few months has been to freeze and baseline as much as possible the schedules of various ATLAS systems and activities. The main motivations for the re-baselining of the schedules have been the new LHC schedule aiming at first collisions in early 2006 and the encountered delays in civil engineering as well as in the production of some of the detectors. The process was started by first preparing a new installation schedule that takes into account all the new external constraints and the new ATLAS staging scenario. The installation schedule version 3 was approved in the March EB and it provides the Ready For Installation (RFI) milestones for each system, i.e. the date when the system should be available for the start of the installation. TCn is now interacting with the systems aiming at a more realistic and resource loaded version 4 before the end of the year. Using the new RFI milestones as driving dates a new summary schedule has been prepared, or is under preparation, for each system....

  16. On the Road to Improved Scheduling

    Lindhard, Søren Munch; Wandahl, Søren


    Scheduling in onsite construction is based on commitments. Unmet commitments result in non-completions which leads to waste. Moreover, it is important that commitments are realistic to avoid both positive and negative variation in duration. Negative variation is destructive to plans and schedules...... total, 5424 activities have been registered whereof 1450 activities ended up as non-completions. Thus, 27% of the scheduled activities did not finish on schedule. Both positive and negative variation can be minimized by improving the quality of the commitments. Moreover, positive variation can be...... exploited by: (a) ensuring that the crew finishing an activity too early can continue their work and (b) ensuring that any connecting activity can start as fast as possible....

  17. A TQCS-based Scheduling Approach for Manufacturing Grid

    LIU Li-lan; YU Tao; CAO Hong-wu; SHI Zhan-bei


    With Open Grid Service Architecture (OGSA) as system framework, and Globus Toolkit3.0 (GT3) as developing tools, Manufacturing Grid (MG) is proposed in this research to realize resource sharing and collaborative working among manufacturing resources, and task scheduling is one of the most critical components in this system. Nevertheless, the Globus Resource Allocation Manager (GRAM) does not provide scheduling system by default, and traditional performance-guided or economy-guided schedulers cannot satisfy our needs in MG. So, in this paper, a TQCS (Time, Quality, Cost, Service)-based scheduling approach is presented and the corresponding scheduler (Manufacturing Grid Task Scheduler, MGTS) is implemented with the functions of Global Process Planning (GPP) analyzing, resource discovery, resource selection, AHP (Analytic Hierarchy Process)-based resource mapping, and fault-tolerant handling. Furthermore, the application architecture is depicted at the end of the paper to illustrate the utilization of our scheduler.


    N. Barathi


    Full Text Available MapReduce is a widely used parallel computing framework for large scale data processing. The two major performance metrics in MapReduce are job execution time and cluster throughput. They can be seriously impacted by straggler machines. Speculative execution is a common approach for dealing with the straggler problem by simply backing up those slow running tasks on alternative machines. To improve speculative execution strategies MCP (Maximum Cost Performance can identify slow task and EWMA (Exponentially Weighted Moving Average to predict process speed and calculate task completion time. Multiple speculative execution strategies have been proposed, but there is a pitfall: incoming jobs are allocated to nodes present in server and fail to schedule process type allocate to node for processing. To overcome this process we proposed a new scheduling based speculative execution strategy. For scheduling we first calculate number of name node residing in server, minimum threshold of resources allocated to name node. We use minimum to avoid huge interaction among the name node when the competition for resources arises. To choose a proper work node for computing the task, we take both time scheduling and ability of work node to compute the task.

  19. Estimating exponential scheduling preferences

    Hjorth, Katrine; Börjesson, Maria; Engelson, Leonid;

    travel costs of the used links, if independence of the link travel times is assumed. The purpose of this paper is to empirically estimate the exponential form of utility rates and to compare it both to a more general form and to conventional forms as regards conformity to collected data on travellers...... drivers commuting to work in the morning in central Stockholm. The survey contains observations of choices between car and public transport travel alternatives, which differ in terms of departure time, monetary cost, and the distribution of travel time. We develop a discrete choice model to describe......-affine specifications to two benchmarks: The generalised exponential-exponential specification and the conventional α-β-γ specification. As could be expected, exponential preferences are difficult to estimate: The estimated parameters of H and W have large standard errors, and some types of models exhibit severe...

  20. Data and Job Aware Community Scheduler Framework for Grid Scheduling Problems

    G. Kalpana


    Full Text Available Grid technologies have brought the promise of flawless combination of distributed heterogeneous resources. Scheduling in Grid computing is the hot topic of research and challenging to manage task, job in efficient manner. For instance, tasks are assumed to include all data needed for its computation or tasks are just the processes and data is assumed to be available in Grid nodes. All the existing works doesn’t focus on the data aware scheduling framework and it is almost impossible to make an optimal or approximate optimal scheduling for the end-to-end workflow with considering the intermediate data movement in grid computing environment. In order to solve this problem in this study a novel Community Scheduler Framework (CSF approach is proposed for solving the job and data aware scheduling problem together and it can be integrated to grid host environment. The system is able to find data-affinity hosts for user requested jobs and to adjust the data replicas dynamically according to the job load. The proposed work reviews the policies for scheduling of grid jobs in the context of data and task aware-intensive applications. Proposed data and task aware CSF Meta scheduler framework makes it possible for job requests to set data needs not only as absolute requirements but also as functions for resource ranking. As the experimental results show that, this makes it more flexible than currently used resource brokers to implement different data-aware scheduling algorithms. The experimentation of the proposed Meta scheduler work is implemented with the help of grid simulation toolkit.


    Glenn, Sophia J.; Kilmer, Richard L.; Stevens, Thomas J., III


    The economic basis for alternative delivery schedules between Florida Dairy Marketing Cooperatives (FDMCs) and fluid milk processors are analyzed, and the costs and benefits of improved coordination between these two market stages are highlighted. The additional costs incurred by FDMCs were they to switch from a uniform delivery schedule to various non-uniform delivery schedules are discussed. The seven-day uniform delivery schedule with the $0.25 discount scheme on total volume decreases FDM...

  2. Automated Scheduling Via Artificial Intelligence

    Biefeld, Eric W.; Cooper, Lynne P.


    Artificial-intelligence software that automates scheduling developed in Operations Mission Planner (OMP) research project. Software used in both generation of new schedules and modification of existing schedules in view of changes in tasks and/or available resources. Approach based on iterative refinement. Although project focused upon scheduling of operations of scientific instruments and other equipment aboard spacecraft, also applicable to such terrestrial problems as scheduling production in factory.

  3. Static Scheduling Strategies for Heterogeneous Systems

    Olivier Beaumont; Arnaud Legrand; Yves Robert


    In this paper, we consider static scheduling techniques for heterogeneous systems, such as clusters and grids. We successively deal with minimum makespan scheduling, divisible load scheduling and steady-state scheduling. Finally, we discuss the limitations of static scheduling approaches.

  4. Multiple DAG Applications Scheduling on a Cluster of Processors

    Uma Boregowda


    Full Text Available Many computational solutions can be expressed as Di rected Acyclic Graph (DAG, in which nodes represent tasks to be executed and edges repr esent precedence constraints among tasks. A Cluster of processors is a shared resource among several users and hence the need for a scheduler which deals with multi-user jobs presente d as DAGs. The scheduler must find the number of processors to be allotted for each DAG an d schedule tasks on allotted processors. In this work, a new method to find optimal and maximum number of processors that can be allotted for a DAG is proposed. Regression analysis is used to find the best possible way to share available processors, among suitable number of subm itted DAGs. An instance of a scheduler for each DAG, schedules tasks on the allotted proce ssors. Towards this end, a new framework to receive online submission of DAGs, allot process ors to each DAG and schedule tasks, is proposed and experimented using a simulator. This s pace-sharing of processors among multiple DAGs shows better performance than the other method s found in literature. Because of space- sharing, an online scheduler can be used for each D AG within the allotted processors. The use of online scheduler overcomes the drawbacks of stat ic scheduling which relies on inaccurate estimated computation and communication costs. Thus the proposed framework is a promising solution to perform online scheduling of tasks usin g static information of DAG, a kind of hybrid scheduling .

  5. Scheduling with genetic algorithms

    Fennel, Theron R.; Underbrink, A. J., Jr.; Williams, George P. W., Jr.


    In many domains, scheduling a sequence of jobs is an important function contributing to the overall efficiency of the operation. At Boeing, we develop schedules for many different domains, including assembly of military and commercial aircraft, weapons systems, and space vehicles. Boeing is under contract to develop scheduling systems for the Space Station Payload Planning System (PPS) and Payload Operations and Integration Center (POIC). These applications require that we respect certain sequencing restrictions among the jobs to be scheduled while at the same time assigning resources to the jobs. We call this general problem scheduling and resource allocation. Genetic algorithms (GA's) offer a search method that uses a population of solutions and benefits from intrinsic parallelism to search the problem space rapidly, producing near-optimal solutions. Good intermediate solutions are probabalistically recombined to produce better offspring (based upon some application specific measure of solution fitness, e.g., minimum flowtime, or schedule completeness). Also, at any point in the search, any intermediate solution can be accepted as a final solution; allowing the search to proceed longer usually produces a better solution while terminating the search at virtually any time may yield an acceptable solution. Many processes are constrained by restrictions of sequence among the individual jobs. For a specific job, other jobs must be completed beforehand. While there are obviously many other constraints on processes, it is these on which we focussed for this research: how to allocate crews to jobs while satisfying job precedence requirements and personnel, and tooling and fixture (or, more generally, resource) requirements.

  6. Prescribed Travel Schedules for Fatigue Management

    Whitmire, Alexandra; Johnston, Smith; Lockley, Steven


    The NASA Fatigue Management Team is developing recommendations for managing fatigue during travel and for shift work operations, as Clinical Practice Guidelines for the Management of Circadian Desynchrony in ISS Operations. The Guidelines provide the International Space Station (ISS ) flight surgeons and other operational clinicians with evidence-based recommendations for mitigating fatigue and other factors related to sleep loss and circadian desynchronization. As much international travel is involved both before and after flight, the guidelines provide recommendations for: pre-flight training, in-flight operations, and post-flight rehabilitation. The objective of is to standardize the process by which care is provided to crewmembers, ground controllers, and other support personnel such as trainers, when overseas travel or schedule shifting is required. Proper scheduling of countermeasures - light, darkness, melatonin, diet, exercise, and medications - is the cornerstone for facilitating circadian adaptation, improving sleep, enhancing alertness, and optimizing performance. The Guidelines provide, among other things, prescribed travel schedules that outline the specific implementation of these mitigation strategies. Each travel schedule offers evidence based protocols for properly using the NASA identified countermeasures for fatigue. This presentation will describe the travel implementation schedules and how these can be used to alleviate the effects of jet lag and/or schedule shifts.

  7. Customer Appeasement Scheduling

    Nikseresht, Mohammad R; Somayaji, Anil; Maheshwari, Anil


    Almost all of the current process scheduling algorithms which are used in modern operating systems (OS) have their roots in the classical scheduling paradigms which were developed during the 1970's. But modern computers have different types of software loads and user demands. We think it is important to run what the user wants at the current moment. A user can be a human, sitting in front of a desktop machine, or it can be another machine sending a request to a server through a network connec...

  8. Optimal Sensor Scheduling for Multiple Linear Dynamical Systems

    Duo, Han; Junfeng, Wu; Huanshui, Zhang; Ling, Shi


    We consider the design of an optimal collision-free sensor schedule for a number of sensors which monitor different linear dynamical systems correspondingly. At each time, only one of all the sensors can send its local estimate to the remote estimator. A preliminary work for the two-sensor scheduling case has been studied in the literature. The generalization into multiple-sensor scheduling case is shown to be nontrivial. We first find a necessary condition of the optimal solution provided th...

  9. Uplink Channel Dependent Scheduling for Future Cellular Systems

    Jersenius, Kristina


    One goal in the development of future cellular systems is to increase performance. Channel dependent scheduling can possibly contribute to a performance enhancement. It requires channel qualityinformation and uplink channel knowledge is often incomplete. This master thesis work compares channel dependent scheduling and channel independent scheduling for a Single Carrier Frequency Division Multiple Access-based uplink in time domain and time and frequencydomain assuming continuous channel qual...

  10. Alternative 23

    Jackson, Mark


    Alternative 23 is a curated exhibition of works by Steve Aylett, David Blandy & Daniel Locke, Let Me Feel Your Finger First, Laura Oldfield Ford, Plastique Fantastique and Henrik Schrat, including the first screening of Let Me Feel Your Finger First’s Postcolonial Capers. In 1985 DC Comics in the US had taken the commercial decision to unify the complex and contradictory character story arcs from its various strips such as Superman, Batman and Green Lantern. The resultant crossover series...

  11. Personnel Scheduling in Laboratories

    Franses, Philip; Post, Gerhard; Burke, Edmund; De Causmaecker, Patrick


    We describe an assignment problem particular to the personnel scheduling of organisations such as laboratories. Here we have to assign tasks to employees. We focus on the situation where this assignment problem reduces to constructing maximal matchings in a set of interrelated bipartite graphs. We d

  12. Routing and scheduling problems

    Reinhardt, Line Blander

    to a destination on a predefined network, the routing and scheduling of vessels in a liner shipping network given a demand forecast to be covered, the routing of manpower and vehicles transporting disabled passengers in an airport and the vehicle routing with time windows where one version studied includes edge...

  13. Schedulers are no Prophets

    Hartmanns, Arnd; Hermanns, Holger; Krčál, Jan


    Several formalisms for concurrent computation have been proposed in recent years that incorporate means to express stochastic continuous-time dynamics and non-determinism. In this setting, some obscure phenomena are known to exist, related to the fact that schedulers may yield too pessimistic verifi

  14. 75 FR 42831 - Proposed Collection; Comment Request for Form 1065, Schedule C, Schedule D, Schedule K-1...


    ... Internal Revenue Service Proposed Collection; Comment Request for Form 1065, Schedule C, Schedule D, Schedule K-1, Schedule L, Schedule M-1, Schedule M-2, and Schedule M-3 AGENCY: Internal Revenue Service...)). Currently, the IRS is soliciting comments concerning Form 1065 (U.S. Return of Partnership Income),...

  15. Developing scheduling benchmark tests for the Space Network

    Moe, Karen L.; Happell, Nadine; Brady, Sean


    A set of benchmark tests were developed to analyze and measure Space Network scheduling characteristics and to assess the potential benefits of a proposed flexible scheduling concept. This paper discusses the role of the benchmark tests in evaluating alternative flexible scheduling approaches and defines a set of performance measurements. The paper describes the rationale for the benchmark tests as well as the benchmark components, which include models of the Tracking and Data Relay Satellite (TDRS), mission spacecraft, their orbital data, and flexible requests for communication services. Parameters which vary in the tests address the degree of request flexibility, the request resource load, and the number of events to schedule. Test results are evaluated based on time to process and schedule quality. Preliminary results and lessons learned are addressed.

  16. Scheduling Support for Transactional Memory Contention Management

    Maldonado, Walther; Marler, Patrick; Felber, Pascal;


    different strategies for efficient communication between the kernel and the user-level TM library. To the best of our knowledge, our work is the first to investigate kernel-level support for TM contention management. We have introduced kernel-level TM scheduling support into both the Linux and Solaris...

  17. Schedulability analysis for linear transactions under fixed priority hybrid scheduling

    Zhi-gang GAO; Zhao-hui WU


    In hard real-time systems, schedulability analysis is not only one of the important means of guaranteeing the timelines of embedded software but also one of the fundamental theories of applying other new techniques, such as energy savings and fault tolerance. However, most of the existing schedulability analysis methods assume that schedulers use preemptive scheduling or non-preemptive scheduling. In this paper, we present a schedulability analysis method, i.e., the worst-case hybrid scheduling (WCHS) algorithm, which considers the influence of release jitters of transactions and extends schedulability analysis theory to timing analysis of linear transactions under fixed priority hybrid scheduling. To the best of our knowledge, this method is the first one on timing analysis of linear transactions under hybrid scheduling. An example is employed to demonstrate the use of this method. Experiments show that this method has lower computational complexity while keeping correctness, and that hybrid scheduling has little influence on the average worst-case response time (WCRT), but a negative impact on the schedulability of systems.

  18. The Effectiveness of Performance Incentives under Continuous and Variable Ration Schedules of Reinforcement

    Yukl, Gary A.; And Others


    Results of this study indicate that sample group of unskilled laborers were more productive working under a schedule of continuous reinforcement than under a varied schedule, despite higher average earnings during the latter program. (RW)

  19. PBL. Schedule of Oral Presentations (practical sessions) - 31710 General Linguistics I

    Muñoz Baell, Irma María


    Project Based Learning (PBL). Creating your own Linguistics Collage. Schedule of Oral Presentations Template – Weeks 13-15 (In-class work) - Academic year 2011-2012 (ECTS credits: 6 (150 hours)). See the Planned Weekly Schedule (Practical sessions).

  20. Battery-Aware Scheduling of Mixed Criticality Systems

    Wognsen, Erik Ramsgaard; Hansen, Rene Rydhof; Larsen, Kim Guldstrand


    hybrid system and study its performance under battery-aware scheduling strategies. We believe that this evaluation does not scale with current verification techniques for stochastic hybrid systems. Instead statistical model checking provides a viable alternative with statistical guarantees. Based on our...... model we also calculate an upper bound on the attainable number of task instances from a battery, and we provide a battery-aware scheduler that wastes no energy on instances that are not guaranteed to make their deadlines....

  1. Job shop scheduling problem based on DNA computing

    Yin Zhixiang; Cui Jianzhong; Yang Yan; Ma Ying


    To solve job shop scheduling problem, a new approach-DNA computing is used in solving job shop scheduling problem. The approach using DNA computing to solve job shop scheduling is divided into three stands. Finally, optimum solutions are obtained by sequencing. A small job shop scheduling problem is solved in DNA computing, and the "operations" of the computation were performed with standard protocols, as ligation, synthesis, electrophoresis etc. This work represents further evidence for the ability of DNA computing to solve NP-complete search problems.

  2. Scheduling Method for MTS/MTO Production System

    Tadeuz; Maruf, A.


    In order to fulfil the demand from customers, company can carry out its production activities using several policies. There are two policies which are commonly used, Make-to- Stock (MTS) and Make-to-Order (MTO). Both of these policies not only can be implemented separately, but also can be combined on a production floor, for example in foundry which the production activities have a flowshop characteristic. This paper proposes a Base-Stock Control System (BSCS) model to classify each incoming orders into the category of MTS and MTO. Each incoming orders will be first classified into the category of High Volume (HV) and Low Volume (LV). All products in these two categories will be and scheduled using two alternative methods, the First-In-First-Out (FIFO) and Priority Rule (PR). The production activities are scheduled by considering the capacity of each work station and performed in batch using overlapping operations. Several scenarios conducted on the proposed method reveals production delay reduction from 36% to 5.3% and also the total amount of finished products in ten months horizon planning by approxi mately 66.6%.

  3. Design and Implementation of a Two Level Scheduler for HADOOP Data Grids

    Dr G. Sudha sadhasivam


    Full Text Available Hadoop is a large scale distributed processing infrastructure designed to handle data intensive applications. In a commercial large scale cluster framework, a scheduler distributes user jobs evenly among the cluster resources. The proposed work enhances Hadoop’s fair scheduler that queues the jobs for execution in a fine grained manner using task scheduling. In contrast, the proposed approach allows backfilling ofjobs submitted to the scheduler. Thus job level and task level scheduling is enabled by this approach. The jobs are fairly scheduled with fairness among users, pools and priority. The outcome of the proposed work is that short narrow jobs will be executed in the slot if sufficient resource is not available for larger jobs. Thus shorter jobs get executed faster by the scheduler when compared to the existing fair scheduling policy that schedules tasks based on their fairness of remaining execution time. This approach prevents the starvation of smaller jobs if sufficient resources are available.

  4. A reduced feedback proportional fair multiuser scheduling scheme

    Shaqfeh, Mohammad


    Multiuser switched-diversity scheduling schemes were recently proposed in order to overcome the heavy feedback requirements of conventional opportunistic scheduling schemes by applying a threshold-based, distributed and ordered scheduling mechanism. A slight reduction in the prospected multiuser diversity gains is an acceptable trade-off for great savings in terms of required channel-state-information feedback messages. In this work, we propose a novel proportional fair multiuser switched-diversity scheduling scheme and we demonstrate that it can be optimized using a practical and distributed method to obtain the per-user feedback thresholds. We demonstrate by numerical examples that our reduced feedback proportional fair scheduler operates within 0.3 bits/sec/Hz from the achievable rates by the conventional full feedback proportional fair scheduler in Rayleigh fading conditions. © 2011 IEEE.

  5. Optimal investment and scheduling of distributed energy resources with uncertainty in electric vehicles driving schedules

    Cardoso, Goncalo [Technical Univ. of Lisbon (Portugal); Stadler, Michael [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Center for Energy and Innovation Technologies (Austria); Bozchalui, Mohammed C. [NEC Laboratories American Inc., Irving, TX (United States); Sharma, Ratnesh [NEC Laboratories American Inc., Irving, TX (United States); Marnay, Chris [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Barbosa-Povoa, Ana [Technical Univ. of Lisbon (Portugal); Ferrao, Paulo [Technical Univ. of Lisbon (Portugal)


    The large scale penetration of electric vehicles (EVs) will introduce technical challenges to the distribution grid, but also carries the potential for vehicle-to-grid services. Namely, if available in large enough numbers, EVs can be used as a distributed energy resource (DER) and their presence can influence optimal DER investment and scheduling decisions in microgrids. In this work, a novel EV fleet aggregator model is introduced in a stochastic formulation of DER-CAM [1], an optimization tool used to address DER investment and scheduling problems. This is used to assess the impact of EV interconnections on optimal DER solutions considering uncertainty in EV driving schedules. Optimization results indicate that EVs can have a significant impact on DER investments, particularly if considering short payback periods. Furthermore, results suggest that uncertainty in driving schedules carries little significance to total energy costs, which is corroborated by results obtained using the stochastic formulation of the problem.

  6. Long-term home care scheduling

    Gamst, Mette; Jensen, Thomas Sejr

    In several countries, home care is provided for certain citizens living at home. The long-term home care scheduling problem is to generate work plans spanning several days such that a high quality of service is maintained and the overall cost is kept as low as possible. A solution to the problem...... provides detailed information on visits and visit times for each employee on each of the covered days. We propose a branch-and-price algorithm for the long-term home care scheduling problem. The pricing problem generates one-day plans for an employee, and the master problem merges the plans with respect...

  7. CPU Scheduling Algorithms: A Survey

    Imran Qureshi


    Scheduling is the fundamental function of operating system. For scheduling, resources of system shared among processes which are going to be executed. CPU scheduling is a technique by which processes are allocating to the CPU for a specific time quantum. In this paper the review of different scheduling algorithms are perform with different parameters, such as running time, burst time and waiting times etc. The reviews algorithms are first come first serve, Shortest Job First, Round Robin, ...

  8. Immunization Schedules for Infants and Children

    ... Immunization Schedules Recommended Child and Adolescent Immunization Schedules History of the Vaccine Schedule Children's Hospital of Philadelphia's Vaccine Education Center Get Email Updates To receive email updates ...

  9. Schedule optimization study implementation plan

    This Implementation Plan is intended to provide a basis for improvements in the conduct of the Environmental Restoration (ER) Program at Hanford. The Plan is based on the findings of the Schedule Optimization Study (SOS) team which was convened for two weeks in September 1992 at the request of the U.S. Department of Energy (DOE) Richland Operations Office (RL). The need for the study arose out of a schedule dispute regarding the submission of the 1100-EM-1 Operable Unit (OU) Remedial Investigation/Feasibility Study (RI/FS) Work Plan. The SOS team was comprised of independent professionals from other federal agencies and the private sector experienced in environmental restoration within the federal system. The objective of the team was to examine reasons for the lengthy RI/FS process and recommend ways to expedite it. The SOS team issued their Final Report in December 1992. The report found the most serious impediments to cleanup relate to a series of management and policy issues which are within the control of the three parties managing and monitoring Hanford -- the DOE, U.S. Environmental Protection Agency (EPA), and the State of Washington Department of Ecology (Ecology). The SOS Report identified the following eight cross-cutting issues as the root of major impediments to the Hanford Site cleanup. Each of these eight issues is quoted from the SOS Report followed by a brief, general description of the proposed approach being developed

  10. Seal design alternatives study

    This report presents the results from a study of various sealing alternatives for the WIPP sealing system. Overall, the sealing system has the purpose of reducing to the extent possible the potential for fluids (either gas or liquid) from entering or leaving the repository. The sealing system is divided into three subsystems: drift and panel seals within the repository horizon, shaft seals in each of the four shafts, and borehole seals. Alternatives to the baseline configuration for the WIPP seal system design included evaluating different geometries and schedules for seal component installations and the use of different materials for seal components. Order-of-magnitude costs for the various alternatives were prepared as part of the study. Firm recommendations are not presented, but the advantages and disadvantages of the alternatives are discussed. Technical information deficiencies are identified and studies are outlined which can provide required information