Science.gov

Sample records for gramont schedule lv5fu2

  1. Flexible Scheduling.

    ERIC Educational Resources Information Center

    Davis, Harold S.; Bechard, Joseph E.

    A flexible schedule allows teachers to change group size, group composition, and class length according to the purpose of the lesson. This pamphlet presents various "master" schedules for flexible scheduling: (1) Simple block schedules, (2) back-to-back schedules, (3) interdisciplinary schedules, (4) school-wide block schedules, (5) open-lab…

  2. Scheduling Software

    NASA Technical Reports Server (NTRS)

    1993-01-01

    Advanced Scheduling Environment is a software product designed and marketed by AVYX, Inc. to provide scheduling solutions for complex manufacturing environments. It can be adapted to specific scheduling and manufacturing processes and has led to substantial cost savings. The system was originally developed for NASA use in scheduling Space Shuttle flights and satellite activities. AVYX, Inc. is an offshoot of a company formed to provide computer-related services to NASA. TREES-plus, the company's initial product became the programming language for the advanced scheduling environment system.

  3. Scheduling game

    SciTech Connect

    Kleck, W

    1982-04-01

    Structuring a schedule - whether by Critical Path Method (CPM) or Precedence Charting System (PCS) - involves estimating the duration of one or more activities and arranging them in the most logical sequence. Given the start date, the completion date is relatively simple to determine. What is then so complicated about the process. It is complicated by the people involved - the people who make the schedules and the people who attempt to follow them. Schedules are an essential part of project management and construction contract administration. Much of the material available pertains to the mechanics of schedules, the types of logic networks, the ways that data can be generated and presented. This paper sheds light on other facets of the subject - the statistical and philosophical fundamentals involved in scheduling.

  4. Mission scheduling

    NASA Technical Reports Server (NTRS)

    Gaspin, Christine

    1989-01-01

    How a neural network can work, compared to a hybrid system based on an operations research and artificial intelligence approach, is investigated through a mission scheduling problem. The characteristic features of each system are discussed.

  5. Scheduling the Secondary School.

    ERIC Educational Resources Information Center

    Dempsey, Richard A.; Traverso, Henry P.

    This "how-to-do-it" manual on the intricacies of school scheduling offers both technical information and common sense advice about the process of secondary school scheduling. The first of six chapters provides an overview of scheduling; chapter 2 examines specific considerations for scheduling; chapter 3 surveys the scheduling models and their…

  6. Scheduling Reconsidered (Again!)

    ERIC Educational Resources Information Center

    Hentschke, Guilbert C.; Fowler, William J.

    1974-01-01

    Computer technicians bring to school scheduling a certain naivete regarding the operation of schools. School administrators play a fundamental role of informing technicians about education scheduling needs. (Author)

  7. Iterative refinement scheduling

    NASA Technical Reports Server (NTRS)

    Biefeld, Eric

    1992-01-01

    We present a heuristics-based approach to deep space mission scheduling which is modeled on the approach used by expert human schedulers in producing schedules for planetary encounters. New chronological evaluation techniques are used to focus the search by using information gained during the scheduling process to locate, classify, and resolve regions of conflict. Our approach is based on the assumption that during the construction of a schedule there exist several disjunct temporal regions where the demand for one resource type or a single temporal constraint dominates (bottleneck regions). If the scheduler can identify these regions and classify them based on their dominant constraint, then the scheduler can select the scheduling heuristic.

  8. Robust telescope scheduling

    NASA Technical Reports Server (NTRS)

    Swanson, Keith; Bresina, John; Drummond, Mark

    1994-01-01

    This paper presents a technique for building robust telescope schedules that tend not to break. The technique is called Just-In-Case (JIC) scheduling and it implements the common sense idea of being prepared for likely errors, just in case they should occur. The JIC algorithm analyzes a given schedule, determines where it is likely to break, reinvokes a scheduler to generate a contingent schedule for each highly probable break case, and produces a 'multiply contingent' schedule. The technique was developed for an automatic telescope scheduling problem, and the paper presents empirical results showing that Just-In-Case scheduling performs extremely well for this problem.

  9. Protocols for distributive scheduling

    NASA Technical Reports Server (NTRS)

    Richards, Stephen F.; Fox, Barry

    1993-01-01

    The increasing complexity of space operations and the inclusion of interorganizational and international groups in the planning and control of space missions lead to requirements for greater communication, coordination, and cooperation among mission schedulers. These schedulers must jointly allocate scarce shared resources among the various operational and mission oriented activities while adhering to all constraints. This scheduling environment is complicated by such factors as the presence of varying perspectives and conflicting objectives among the schedulers, the need for different schedulers to work in parallel, and limited communication among schedulers. Smooth interaction among schedulers requires the use of protocols that govern such issues as resource sharing, authority to update the schedule, and communication of updates. This paper addresses the development and characteristics of such protocols and their use in a distributed scheduling environment that incorporates computer-aided scheduling tools. An example problem is drawn from the domain of space shuttle mission planning.

  10. Aspects of job scheduling

    NASA Technical Reports Server (NTRS)

    Phillips, K.

    1976-01-01

    A mathematical model for job scheduling in a specified context is presented. The model uses both linear programming and combinatorial methods. While designed with a view toward optimization of scheduling of facility and plant operations at the Deep Space Communications Complex, the context is sufficiently general to be widely applicable. The general scheduling problem including options for scheduling objectives is discussed and fundamental parameters identified. Mathematical algorithms for partitioning problems germane to scheduling are presented.

  11. Dedicated heterogeneous node scheduling including backfill scheduling

    DOEpatents

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

    2006-07-25

    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.

  12. Immunization Schedules for Adults

    MedlinePlus

    ... ACIP Vaccination Recommendations Why Immunize? Vaccines: The Basics Immunization Schedules for Adults in Easy-to-read Formats ... previous immunizations. View or Print a Schedule Recommended Immunizations for Adults (19 Years and Older) by Age ...

  13. Childhood Immunization Schedule

    MedlinePlus

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

  14. Reinforcement learning in scheduling

    NASA Technical Reports Server (NTRS)

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

    1994-01-01

    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.

  15. Block Scheduling. Research Brief

    ERIC Educational Resources Information Center

    Muir, Mike

    2003-01-01

    What are the effects of block scheduling? Results of transitioning from traditional to block scheduling are mixed. Some studies indicate no change in achievement results, nor change in teachers' opinions about instructional strategies. Other studies show that block scheduling doesn't work well for Advanced Placement or Music courses, that "hard to…

  16. DSN Scheduling Engine

    NASA Technical Reports Server (NTRS)

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

    2008-01-01

    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. NASA scheduling technologies

    NASA Technical Reports Server (NTRS)

    Adair, Jerry R.

    1994-01-01

    This paper is a consolidated report on ten major planning and scheduling systems that have been developed by the National Aeronautics and Space Administration (NASA). A description of each system, its components, and how it could be potentially used in private industry is provided in this paper. The planning and scheduling technology represented by the systems ranges from activity based scheduling employing artificial intelligence (AI) techniques to constraint based, iterative repair scheduling. The space related application domains in which the systems have been deployed vary from Space Shuttle monitoring during launch countdown to long term Hubble Space Telescope (HST) scheduling. This paper also describes any correlation that may exist between the work done on different planning and scheduling systems. Finally, this paper documents the lessons learned from the work and research performed in planning and scheduling technology and describes the areas where future work will be conducted.

  18. Integrated resource scheduling in a distributed scheduling environment

    NASA Technical Reports Server (NTRS)

    Zoch, David; Hall, Gardiner

    1988-01-01

    The Space Station era presents a highly-complex multi-mission planning and scheduling environment exercised over a highly distributed system. In order to automate the scheduling process, customers require a mechanism for communicating their scheduling requirements to NASA. A request language that a remotely-located customer can use to specify his scheduling requirements to a NASA scheduler, thus automating the customer-scheduler interface, is described. This notation, Flexible Envelope-Request Notation (FERN), allows the user to completely specify his scheduling requirements such as resource usage, temporal constraints, and scheduling preferences and options. The FERN also contains mechanisms for representing schedule and resource availability information, which are used in the inter-scheduler inconsistency resolution process. Additionally, a scheduler is described that can accept these requests, process them, generate schedules, and return schedule and resource availability information to the requester. The Request-Oriented Scheduling Engine (ROSE) was designed to function either as an independent scheduler or as a scheduling element in a network of schedulers. When used in a network of schedulers, each ROSE communicates schedule and resource usage information to other schedulers via the FERN notation, enabling inconsistencies to be resolved between schedulers. Individual ROSE schedules are created by viewing the problem as a constraint satisfaction problem with a heuristically guided search strategy.

  19. Automated telescope scheduling

    NASA Technical Reports Server (NTRS)

    Johnston, Mark D.

    1988-01-01

    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.

  20. The range scheduling aid

    NASA Technical Reports Server (NTRS)

    Halbfinger, Eliezer M.; Smith, Barry D.

    1991-01-01

    The Air Force Space Command schedules telemetry, tracking and control activities across the Air Force Satellite Control network. The Range Scheduling Aid (RSA) is a rapid prototype combining a user-friendly, portable, graphical interface with a sophisticated object-oriented database. The RSA has been a rapid prototyping effort whose purpose is to elucidate and define suitable technology for enhancing the performance of the range schedulers. Designing a system to assist schedulers in their task and using their current techniques as well as enhancements enabled by an electronic environment, has created a continuously developing model that will serve as a standard for future range scheduling systems. The RSA system is easy to use, easily ported between platforms, fast, and provides a set of tools for the scheduler that substantially increases his productivity.

  1. Wave scheduling - Decentralized scheduling of task forces in multicomputers

    NASA Technical Reports Server (NTRS)

    Van Tilborg, A. M.; Wittie, L. D.

    1984-01-01

    Decentralized operating systems that control large multicomputers need techniques to schedule competing parallel programs called task forces. Wave scheduling is a probabilistic technique that uses a hierarchical distributed virtual machine to schedule task forces by recursively subdividing and issuing wavefront-like commands to processing elements capable of executing individual tasks. Wave scheduling is highly resistant to processing element failures because it uses many distributed schedulers that dynamically assign scheduling responsibilities among themselves. The scheduling technique is trivially extensible as more processing elements join the host multicomputer. A simple model of scheduling cost is used by every scheduler node to distribute scheduling activity and minimize wasted processing capacity by using perceived workload to vary decentralized scheduling rules. At low to moderate levels of network activity, wave scheduling is only slightly less efficient than a central scheduler in its ability to direct processing elements to accomplish useful work.

  2. Scheduling: Seven Period Day

    ERIC Educational Resources Information Center

    Williamson, Ronald

    2010-01-01

    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…

  3. A Fluid Block Schedule

    ERIC Educational Resources Information Center

    Ubben, Gerald C.

    1976-01-01

    Achieving flexibility without losing student accountability is a challenge that faces every school. With a fluid block schedule, as described here, accountability is maintained without inhibiting flexibility. An additional advantage is that three levels of schedule decision making take some of the pressure off the principal. (Editor)

  4. Surviving Block Scheduling.

    ERIC Educational Resources Information Center

    Haley, Marjorie

    A discussion of block scheduling for second language instruction looks at the advantages and disadvantages and offers some suggestions for classroom management and course organization. It is argued that block scheduling may offer a potential solution to large classes, insufficient time for labs, too little individualized instruction; few…

  5. Fundamentals of School Scheduling.

    ERIC Educational Resources Information Center

    Schroth, Gwen

    The ability of the school administrator to schedule teachers' and students' time so that each receives the most from each school day has become an essential skill. This book has been prepared for school administrators at the elementary and middle school levels who need appropriate management techniques for scheduling students into classes. Chapter…

  6. Range Scheduling Aid (RSA)

    NASA Technical Reports Server (NTRS)

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

    1991-01-01

    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.

  7. What's behind Block Scheduling?

    ERIC Educational Resources Information Center

    Gierke, Carolyn

    1999-01-01

    Discussion of block scheduling in secondary schools focuses on its impact on the school library media center. Discusses increased demand for library services, scheduling classes, the impact on librarians' time, teaching information technology, local area networks, and the increased pace of activity. (LRW)

  8. DSN Resource Scheduling

    NASA Technical Reports Server (NTRS)

    Wang, Yeou-Fang; Baldwin, John

    2007-01-01

    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.

  9. Computerizing the Reference Desk Schedule.

    ERIC Educational Resources Information Center

    deHaas, Pat

    1983-01-01

    Discussion of the scheduling procedures of librarians' hours at the reference desk at the Rutherford Humanities and Social Sciences Library, University of Alberta, highlights services provided, the preference table system, and manual scheduling versus computer scheduling. (EJS)

  10. NASA Schedule Management Handbook

    NASA Technical Reports Server (NTRS)

    2011-01-01

    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.

  11. Prototype resupply scheduler

    NASA Technical Reports Server (NTRS)

    Tanner, Steve; Hughes, Angi; Byrd, Jim

    1987-01-01

    Resupply scheduling for the Space Station presents some formidable logistics problems. One of the most basic problems is assigning supplies to a series of shuttle resupply missions. A prototype logistics expert system which constructs resupply schedules was developed. This prototype is able to reconstruct feasible resupply plans. In addition, analysts can use the system to evaluate the impact of adding, deleting or modifying launches, cargo space, experiments, etc.

  12. Polynomial optimization techniques for activity scheduling. Optimization based prototype scheduler

    NASA Technical Reports Server (NTRS)

    Reddy, Surender

    1991-01-01

    Polynomial optimization techniques for activity scheduling (optimization based prototype scheduler) are presented in the form of the viewgraphs. The following subject areas are covered: agenda; need and viability of polynomial time techniques for SNC (Space Network Control); an intrinsic characteristic of SN scheduling problem; expected characteristics of the schedule; optimization based scheduling approach; single resource algorithms; decomposition of multiple resource problems; prototype capabilities, characteristics, and test results; computational characteristics; some features of prototyped algorithms; and some related GSFC references.

  13. Automated Scheduling Via Artificial Intelligence

    NASA Technical Reports Server (NTRS)

    Biefeld, Eric W.; Cooper, Lynne P.

    1991-01-01

    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.

  14. Constraint-based scheduling

    NASA Technical Reports Server (NTRS)

    Zweben, Monte

    1991-01-01

    The GERRY scheduling system developed by NASA Ames with assistance from the Lockheed Space Operations Company, and the Lockheed Artificial Intelligence Center, uses a method called constraint based iterative repair. Using this technique, one encodes both hard rules and preference criteria into data structures called constraints. GERRY repeatedly attempts to improve schedules by seeking repairs for violated constraints. The system provides a general scheduling framework which is being tested on two NASA applications. The larger of the two is the Space Shuttle Ground Processing problem which entails the scheduling of all inspection, repair, and maintenance tasks required to prepare the orbiter for flight. The other application involves power allocations for the NASA Ames wind tunnels. Here the system will be used to schedule wind tunnel tests with the goal of minimizing power costs. In this paper, we describe the GERRY system and its applications to the Space Shuttle problem. We also speculate as to how the system would be used for manufacturing, transportation, and military problems.

  15. Constraint-based scheduling

    NASA Technical Reports Server (NTRS)

    Zweben, Monte

    1991-01-01

    The GERRY scheduling system developed by NASA Ames with assistance from the Lockheed Space Operations Company, and the Lockheed Artificial Intelligence Center, uses a method called constraint-based iterative repair. Using this technique, one encodes both hard rules and preference criteria into data structures called constraints. GERRY repeatedly attempts to improve schedules by seeking repairs for violated constraints. The system provides a general scheduling framework which is being tested on two NASA applications. The larger of the two is the Space Shuttle Ground Processing problem which entails the scheduling of all the inspection, repair, and maintenance tasks required to prepare the orbiter for flight. The other application involves power allocation for the NASA Ames wind tunnels. Here the system will be used to schedule wind tunnel tests with the goal of minimizing power costs. In this paper, we describe the GERRY system and its application to the Space Shuttle problem. We also speculate as to how the system would be used for manufacturing, transportation, and military problems.

  16. Constraint-based scheduling

    NASA Technical Reports Server (NTRS)

    Zweben, Monte

    1993-01-01

    The GERRY scheduling system developed by NASA Ames with assistance from the Lockheed Space Operations Company, and the Lockheed Artificial Intelligence Center, uses a method called constraint-based iterative repair. Using this technique, one encodes both hard rules and preference criteria into data structures called constraints. GERRY repeatedly attempts to improve schedules by seeking repairs for violated constraints. The system provides a general scheduling framework which is being tested on two NASA applications. The larger of the two is the Space Shuttle Ground Processing problem which entails the scheduling of all the inspection, repair, and maintenance tasks required to prepare the orbiter for flight. The other application involves power allocation for the NASA Ames wind tunnels. Here the system will be used to schedule wind tunnel tests with the goal of minimizing power costs. In this paper, we describe the GERRY system and its application to the Space Shuttle problem. We also speculate as to how the system would be used for manufacturing, transportation, and military problems.

  17. Scheduling with genetic algorithms

    NASA Technical Reports Server (NTRS)

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

    1994-01-01

    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.

  18. Intelligent retail logistics scheduling

    SciTech Connect

    Rowe, J.; Jewers, K.; Codd, A.; Alcock, A.

    1996-12-31

    The Supply Chain Integrated Ordering Network (SCION) Depot Bookings system automates the planning and scheduling of perishable and non-perishable commodities and the vehicles that carry them into J. Sainsbury depots. This is a strategic initiative, enabling the business to make the key move from weekly to daily ordering. The system is mission critical, managing the inwards flow of commodities from suppliers into J. Sainsbury`s depots. The system leverages Al techniques to provide a business solution that meets challenging functional and performance needs. The SCION Depot Bookings system is operational providing schedules for 22 depots across the UK.

  19. Parent Interview Schedule.

    ERIC Educational Resources Information Center

    Purdue Univ., Lafayette, IN. Educational Research Center.

    This 116-item interview schedule designed for parents who failed to respond to the Questionnaire for Parents, is individually administered to the mother of the child of elementary school age. It consists of scales measuring 14 parent variables plus a section devoted to demographic variables: (1) parent's achievement aspirations for the child, (2)…

  20. CMS multicore scheduling strategy

    SciTech Connect

    Perez-Calero Yzquierdo, Antonio; Hernandez, Jose; Holzman, Burt; Majewski, Krista; McCrea, Alison

    2014-01-01

    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.

  1. CMS multicore scheduling strategy

    NASA Astrophysics Data System (ADS)

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

    2014-06-01

    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.

  2. Class Schedules--Computer Loaded or Student Self-Scheduled?

    ERIC Educational Resources Information Center

    Wall, Edward F.

    1979-01-01

    In the two-step process of student scheduling, the initial phase of course selection is the most important. At Chesterton High School in Indiana, student self-scheduling is preferred over computer loading. (Author/MLF)

  3. Completable scheduling: An integrated approach to planning and scheduling

    NASA Technical Reports Server (NTRS)

    Gervasio, Melinda T.; Dejong, Gerald F.

    1992-01-01

    The planning problem has traditionally been treated separately from the scheduling problem. However, as more realistic domains are tackled, it becomes evident that the problem of deciding on an ordered set of tasks to achieve a set of goals cannot be treated independently of the problem of actually allocating resources to the tasks. Doing so would result in losing the robustness and flexibility needed to deal with imperfectly modeled domains. Completable scheduling is an approach which integrates the two problems by allowing an a priori planning module to defer particular planning decisions, and consequently the associated scheduling decisions, until execution time. This allows a completable scheduling system to maximize plan flexibility by allowing runtime information to be taken into consideration when making planning and scheduling decision. Furthermore, through the criteria of achievability placed on deferred decision, a completable scheduling system is able to retain much of the goal-directedness and guarantees of achievement afforded by a priori planning. The completable scheduling approach is further enhanced by the use of contingent explanation-based learning, which enables a completable scheduling system to learn general completable plans from example and improve its performance through experience. Initial experimental results show that completable scheduling outperforms classical scheduling as well as pure reactive scheduling in a simple scheduling domain.

  4. Scheduling techniques in the Request Oriented Scheduling Engine (ROSE)

    NASA Technical Reports Server (NTRS)

    Zoch, David R.

    1991-01-01

    Scheduling techniques in the ROSE are presented in the form of the viewgraphs. The following subject areas are covered: agenda; ROSE summary and history; NCC-ROSE task goals; accomplishments; ROSE timeline manager; scheduling concerns; current and ROSE approaches; initial scheduling; BFSSE overview and example; and summary.

  5. Surprise Benefits of Arena Scheduling

    ERIC Educational Resources Information Center

    Surloff, Andrew

    2008-01-01

    One of the most challenging tasks a principal must accomplish every year is the construction of the master schedule. Free from the magnetic scheduling boards and wall charts of yesteryear, principals now have technological tools--such as programs that offer schools solutions for their scheduling needs--that can save time and enable them to work…

  6. Scheduling and Achievement. Research Brief

    ERIC Educational Resources Information Center

    Walker, Karen

    2006-01-01

    To use a block schedule or a traditional schedule? Which structure will produce the best and highest achievement rates for students? The research is mixed on this due to numerous variables such as: (1) socioeconomic levels; (2) academic levels; (3) length of time a given schedule has been in operation; (4) strategies being used in the classrooms;…

  7. FlexMod Scheduling Redux

    ERIC Educational Resources Information Center

    Murray, Shannon

    2008-01-01

    Flexible modular scheduling (flex mod)--a schedule philosophy and system that has been in place at Wausau West High School in Wausau, Wisconsin, for the last 35 years and aligns nicely with current research on student learning--is getting more and more attention from high school administrators across the country. Flexible modular scheduling was…

  8. Flexible Scheduling: Making the Transition

    ERIC Educational Resources Information Center

    Creighton, Peggy Milam

    2008-01-01

    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:…

  9. Scheduling a C-Section

    MedlinePlus

    ... Labor & birth > Scheduling a c-section Scheduling a c-section E-mail to a friend Please fill ... develop before she’s born. Why can scheduling a c-section for non-medical reasons be a problem? ...

  10. 75 FR 42831 - Proposed Collection; Comment Request for Form 1065, Schedule C, Schedule D, Schedule K-1...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-22

    ... Items), Schedule L (Balance Sheets per Books), Schedule M-1 (Reconciliation of Income (Loss) per Books.... (Schedule K-1), Balance Sheets per Books (Schedule L), Reconciliation of Income (Loss) per Books With...

  11. Revisiting conjugate schedules.

    PubMed

    MacAleese, Kenneth R; Ghezzi, Patrick M; Rapp, John T

    2015-07-01

    The effects of conjugate reinforcement on the responding of 13 college students were examined in three experiments. Conjugate reinforcement was provided via key presses that changed the clarity of pictures displayed on a computer monitor in a manner proportional to the rate of responding. Experiment 1, which included seven parameters of clarity change per response, revealed that responding decreased as the percentage clarity per response increased for all five participants. These results indicate that each participant's responding was sensitive to intensity change, which is a parameter of conjugate reinforcement schedules. Experiment 2 showed that responding increased during conjugate reinforcement phases and decreased during extinction phases for all four participants. Experiment 3 also showed that responding increased during conjugate reinforcement and further showed that responding decreased during a conjugate negative punishment condition for another four participants. Directions for future research with conjugate schedules are briefly discussed. PMID:26150349

  12. Revisiting conjugate schedules.

    PubMed

    MacAleese, Kenneth R; Ghezzi, Patrick M; Rapp, John T

    2015-07-01

    The effects of conjugate reinforcement on the responding of 13 college students were examined in three experiments. Conjugate reinforcement was provided via key presses that changed the clarity of pictures displayed on a computer monitor in a manner proportional to the rate of responding. Experiment 1, which included seven parameters of clarity change per response, revealed that responding decreased as the percentage clarity per response increased for all five participants. These results indicate that each participant's responding was sensitive to intensity change, which is a parameter of conjugate reinforcement schedules. Experiment 2 showed that responding increased during conjugate reinforcement phases and decreased during extinction phases for all four participants. Experiment 3 also showed that responding increased during conjugate reinforcement and further showed that responding decreased during a conjugate negative punishment condition for another four participants. Directions for future research with conjugate schedules are briefly discussed.

  13. Automated Platform Management System Scheduling

    NASA Technical Reports Server (NTRS)

    Hull, Larry G.

    1990-01-01

    The Platform Management System was established to coordinate the operation of platform systems and instruments. The management functions are split between ground and space components. Since platforms are to be out of contact with the ground more than the manned base, the on-board functions are required to be more autonomous than those of the manned base. Under this concept, automated replanning and rescheduling, including on-board real-time schedule maintenance and schedule repair, are required to effectively and efficiently meet Space Station Freedom mission goals. In a FY88 study, we developed several promising alternatives for automated platform planning and scheduling. We recommended both a specific alternative and a phased approach to automated platform resource scheduling. Our recommended alternative was based upon use of exactly the same scheduling engine in both ground and space components of the platform management system. Our phased approach recommendation was based upon evolutionary development of the platform. In the past year, we developed platform scheduler requirements and implemented a rapid prototype of a baseline platform scheduler. Presently we are rehosting this platform scheduler rapid prototype and integrating the scheduler prototype into two Goddard Space Flight Center testbeds, as the ground scheduler in the Scheduling Concepts, Architectures, and Networks Testbed and as the on-board scheduler in the Platform Management System Testbed. Using these testbeds, we will investigate rescheduling issues, evaluate operational performance and enhance the platform scheduler prototype to demonstrate our evolutionary approach to automated platform scheduling. The work described in this paper was performed prior to Space Station Freedom rephasing, transfer of platform responsibility to Code E, and other recently discussed changes. We neither speculate on these changes nor attempt to predict the impact of the final decisions. As a consequence some of our

  14. 2007 Wholesale Power Rate Schedules : 2007 General Rate Schedule Provisions.

    SciTech Connect

    United States. Bonneville Power Administration.

    2006-11-01

    This schedule is available for the contract purchase of Firm Power to be used within the Pacific Northwest (PNW). Priority Firm (PF) Power may be purchased by public bodies, cooperatives, and Federal agencies for resale to ultimate consumers, for direct consumption, and for Construction, Test and Start-Up, and Station Service. Rates in this schedule are in effect beginning October 1, 2006, and apply to purchases under requirements Firm Power sales contracts for a three-year period. The Slice Product is only available for public bodies and cooperatives who have signed Slice contracts for the FY 2002-2011 period. Utilities participating in the Residential Exchange Program (REP) under Section 5(c) of the Northwest Power Act may purchase Priority Firm Power pursuant to the Residential Exchange Program. Rates under contracts that contain charges that escalate based on BPA's Priority Firm Power rates shall be based on the three-year rates listed in this rate schedule in addition to applicable transmission charges. This rate schedule supersedes the PF-02 rate schedule, which went into effect October 1, 2001. Sales under the PF-07 rate schedule are subject to BPA's 2007 General Rate Schedule Provisions (2007 GRSPs). Products available under this rate schedule are defined in the 2007 GRSPs. For sales under this rate schedule, bills shall be rendered and payments due pursuant to BPA's 2007 GRSPs and billing process.

  15. Schedule-induced licking during multiple schedules1

    PubMed Central

    Jacquet, Yasuko Filby

    1972-01-01

    Schedule-induced polydipsia was studied in rats bar pressing under two-component multiple schedules of food reinforcement. The first component of the multiple schedule was a variable-interval 1-min schedule throughout the experiment. The schedule comprising the second component was varied over blocks of sessions in terms of rate and magnitude of reinforcement, and was either variable-interval 3-min (one pellet), variable-interval 3-min (three pellets), variable-interval 1-min (one pellet), or extinction. Water intake per session varied with the rate of reinforcement in the schedule comprising the second component and was highest when the schedule was variable-interval 1-min. Both bar-pressing behavior and licking behavior showed behavioral interactions between the two components of the multiple schedules. With magnitude of reinforcement held constant, a matching relationship was observed between lick rate and reinforcement rate; the relative frequency of licks in the constant component matched the relative frequency of reinforcement in that component. Bar pressing, however, showed only a moderate degree of relativity matching. During the schedule-induced licking, a burst of licking followed each delivery of a pellet (post-prandial drinking). The duration of these bursts of licking was observed to be a function of the inter-reinforcement interval. PMID:16811598

  16. 1993 Wholesale Power and Transmission Rate Schedules.

    SciTech Connect

    US Bonneville Power Administration

    1993-10-01

    Bonneville Power Administration 1993 Wholesale Power Rate Schedules and General Rate Schedule Provisions and 1993 Transmission Rate Schedules and General Transmission Rate Schedule Provisions, contained herein, were approved on an interim basis effective October 1, 1993. These rate schedules and provisions were approved by the Federal Energy Commission, United States Department of Energy, in September, 1993. These rate schedules and provisions supersede the Administration`s Wholesale Power Rate Schedules and General Rate Schedule Provisions and Transmission Rate Schedules and General Transmission Rate Schedule Provisions effective October 1, 1991.

  17. DTS: Building custom, intelligent schedulers

    NASA Technical Reports Server (NTRS)

    Hansson, Othar; Mayer, Andrew

    1994-01-01

    DTS is a decision-theoretic scheduler, built on top of a flexible toolkit -- this paper focuses on how the toolkit might be reused in future NASA mission schedulers. The toolkit includes a user-customizable scheduling interface, and a 'Just-For-You' optimization engine. The customizable interface is built on two metaphors: objects and dynamic graphs. Objects help to structure problem specifications and related data, while dynamic graphs simplify the specification of graphical schedule editors (such as Gantt charts). The interface can be used with any 'back-end' scheduler, through dynamically-loaded code, interprocess communication, or a shared database. The 'Just-For-You' optimization engine includes user-specific utility functions, automatically compiled heuristic evaluations, and a postprocessing facility for enforcing scheduling policies. The optimization engine is based on BPS, the Bayesian Problem-Solver (1,2), which introduced a similar approach to solving single-agent and adversarial graph search problems.

  18. The LSST OCS scheduler design

    NASA Astrophysics Data System (ADS)

    Delgado, Francisco; Schumacher, German

    2014-08-01

    The Large Synoptic Survey Telescope (LSST) is a complex system of systems with demanding performance and operational requirements. The nature of its scientific goals requires a special Observatory Control System (OCS) and particularly a very specialized automatic Scheduler. The OCS Scheduler is an autonomous software component that drives the survey, selecting the detailed sequence of visits in real time, taking into account multiple science programs, the current external and internal conditions, and the history of observations. We have developed a SysML model for the OCS Scheduler that fits coherently in the OCS and LSST integrated model. We have also developed a prototype of the Scheduler that implements the scheduling algorithms in the simulation environment provided by the Operations Simulator, where the environment and the observatory are modeled with real weather data and detailed kinematics parameters. This paper expands on the Scheduler architecture and the proposed algorithms to achieve the survey goals.

  19. COMPASS: An Ada based scheduler

    NASA Technical Reports Server (NTRS)

    Mcmahon, Mary Beth; Culbert, Chris

    1992-01-01

    COMPASS is a generic scheduling system developed by McDonnell Douglas and funded by the Software Technology Branch of NASA Johnson Space Center. The motivation behind COMPASS is to illustrate scheduling technology and provide a basis from which custom scheduling systems can be built. COMPASS was written in Ada to promote readability and to conform to DOD standards. COMPASS has some unique characteristics that distinguishes it from commercial products. This paper discusses these characteristics and uses them to illustrate some differences between scheduling tools.

  20. Chemical Kiloton Experiment schedules

    NASA Astrophysics Data System (ADS)

    The Lawrence Livermore National Laboratory will conduct a large chemical explosion (CE) called the Chemical Kiloton Experiment (CKE) in the Rainier Mesa area of the Nevada Test site. The explosion will involve a 30/70 Emulsion-to-ANFO blend of 1,147,000 kg to supply 1 kt, and is scheduled for January 29. It will be heavily instrumented with close-in, free-field surface seismic and regional seismic measurements. The CKE is located near several DNA-sponsored nuclear explosions (NEs) and will provide a unique opportunity for fundamental studies on explosion phenomenology (for example, CE/NE equivalence), scaling with CEs and NEs, and integration of multiple monitoring methods. This experiment will also address some critical proliferation monitoring problems such as CE masking of NEs, CEs as false alarms, CEs for regional calibration, and on-site inspection.

  1. Optimum connection management scheduling

    NASA Astrophysics Data System (ADS)

    Kadar, Ivan

    2000-08-01

    Connection Management plays a key role in both distributed 'local' network-centric and 'globally' connected info- centric systems. The role of Connection Management is to provide seamless demand-based sharing of the information products. For optimum distributed information fusion performance, these systems must minimize communications delays and maximize message throughput, and at the same time take into account relative-sensors-targets geometrical constraints and data pedigree. In order to achieve overall distributed 'network' effectiveness, these systems must be adaptive, and be able to distribute data s needed in real- time. A system concept will be described which provides optimum capacity-based information scheduling. A specific example, based on a satellite channel, is used to illustrate simulated performance results and their effects on fusion systems performance.

  2. Visually Exploring Transportation Schedules.

    PubMed

    Palomo, Cesar; Guo, Zhan; Silva, Cláudio T; Freire, Juliana

    2016-01-01

    Public transportation schedules are designed by agencies to optimize service quality under multiple constraints. However, real service usually deviates from the plan. Therefore, transportation analysts need to identify, compare and explain both eventual and systemic performance issues that must be addressed so that better timetables can be created. The purely statistical tools commonly used by analysts pose many difficulties due to the large number of attributes at trip- and station-level for planned and real service. Also challenging is the need for models at multiple scales to search for patterns at different times and stations, since analysts do not know exactly where or when relevant patterns might emerge and need to compute statistical summaries for multiple attributes at different granularities. To aid in this analysis, we worked in close collaboration with a transportation expert to design TR-EX, a visual exploration tool developed to identify, inspect and compare spatio-temporal patterns for planned and real transportation service. TR-EX combines two new visual encodings inspired by Marey's Train Schedule: Trips Explorer for trip-level analysis of frequency, deviation and speed; and Stops Explorer for station-level study of delay, wait time, reliability and performance deficiencies such as bunching. To tackle overplotting and to provide a robust representation for a large numbers of trips and stops at multiple scales, the system supports variable kernel bandwidths to achieve the level of detail required by users for different tasks. We justify our design decisions based on specific analysis needs of transportation analysts. We provide anecdotal evidence of the efficacy of TR-EX through a series of case studies that explore NYC subway service, which illustrate how TR-EX can be used to confirm hypotheses and derive new insights through visual exploration.

  3. Modeling the Cray memory scheduler

    SciTech Connect

    Wickham, K.L.; Litteer, G.L.

    1992-04-01

    This report documents the results of a project to evaluate low cost modeling and simulation tools when applied to modeling the Cray memory scheduler. The specific tool used is described and the basics of the memory scheduler are covered. Results of simulations using the model are discussed and a favorable recommendation is made to make more use of this inexpensive technology.

  4. Block Schedule: Breaking the Barriers.

    ERIC Educational Resources Information Center

    West, Mike

    As of 1996, Chaparral High School in Las Vegas, Nevada, was in the fourth year of a radical restructuring effort. The school changed from a 6-period day, composed of 51-minute periods, to an alternating day schedule, composed of 3 102-minute periods per day. This report describes how the school developed and implemented the new schedule. Faculty…

  5. Flexible Work Schedules. ERIC Digest.

    ERIC Educational Resources Information Center

    Kerka, Sandra

    Flexible work schedules are one response to changes in the composition of the work force, new life-styles, and changes in work attitudes. Types of alternative work schedules are part-time and temporary employment, job sharing, and flextime. Part-time workers are a diverse group--women, the very young, and older near-retirees. Although part-time…

  6. Scheduling Software for MS-DOS Microcomputers.

    ERIC Educational Resources Information Center

    Carlson, David H.; Prior, Barbara

    1991-01-01

    Identifies four microcomputer-based software packages for scheduling and evaluates their usefulness for scheduling employees in a library setting. Evaluation criteria are applied to (1) Schedule Master, from Schedule Master Corporation; (2) Schedule Plus, from Cyclesoft, Inc.; (3) Who Works When, from Newport Systems; and (4) Working Hours, from…

  7. Solve Your Scheduling Puzzle without a Computer.

    ERIC Educational Resources Information Center

    Toy, Steve

    1982-01-01

    The small Lone Star school district in Otis (Colorado) developed a year-long process for creating its master course schedule. The scheduling process includes a needs assessment, a curriculum scheduling committee of teachers and students, a trial run of the schedule, and board approval of the master schedule. (RW)

  8. Astronaut Office Scheduling System Software

    NASA Technical Reports Server (NTRS)

    Brown, Estevancio

    2010-01-01

    AOSS is a highly efficient scheduling application that uses various tools to schedule astronauts weekly appointment information. This program represents an integration of many technologies into a single application to facilitate schedule sharing and management. It is a Windows-based application developed in Visual Basic. Because the NASA standard office automation load environment is Microsoft-based, Visual Basic provides AO SS developers with the ability to interact with Windows collaboration components by accessing objects models from applications like Outlook and Excel. This also gives developers the ability to create newly customizable components that perform specialized tasks pertaining to scheduling reporting inside the application. With this capability, AOSS can perform various asynchronous tasks, such as gathering/ sending/ managing astronauts schedule information directly to their Outlook calendars at any time.

  9. The GBT Dynamic Scheduling System: A New Scheduling Paradigm

    NASA Astrophysics Data System (ADS)

    O'Neil, K.; Balser, D.; Bignell, C.; Clark, M.; Condon, J.; McCarty, M.; Marganian, P.; Shelton, A.; Braatz, J.; Harnett, J.; Maddalena, R.; Mello, M.; Sessoms, E.

    2009-09-01

    The Robert C. Byrd Green Bank Telescope (GBT) is implementing a new Dynamic Scheduling System (DSS) designed to maximize the observing efficiency of the telescope while ensuring that none of the flexibility and ease of use of the GBT is harmed and that the data quality of observations is not adversely affected. To accomplish this, the GBT DSS is implementing a dynamic scheduling system which schedules observers, rather than running scripts. The DSS works by breaking each project into one or more sessions which have associated observing criteria such as RA, Dec, and frequency. Potential observers may also enter dates when members of their team will not be available for either on-site or remote observing. The scheduling algorithm uses those data, along with the predicted weather, to determine the most efficient schedule for the GBT. The DSS provides all observers at least 24 hours notice of their upcoming observing. In the uncommon (< 20%) case where the actual weather does not match the predictions, a backup project, chosen from the database, is run instead. Here we give an overview of the GBT DSS project, including the ranking and scheduling algorithms for the sessions, the scheduling probabilities generation, the web framework for the system, and an overview of the results from the beta testing which were held from June - September, 2008.

  10. Transportation Baseline Schedule

    SciTech Connect

    Fawcett, Ricky Lee; John, Mark Earl

    2000-01-01

    The “1999 National Transportation Program - Transportation Baseline Report” presents data that form a baseline to enable analysis and planning for future Department of Energy (DOE) Environmental Management (EM) waste/material transportation. The companion “1999 Transportation ‘Barriers’ Analysis” analyzes the data and identifies existing and potential problems that may prevent or delay transportation activities based on the data presented. The “1999 Transportation Baseline Schedule” (this report) uses the same data to provide an overview of the transportation activities of DOE EM waste/materials. This report can be used to identify areas where stakeholder interface is needed, and to communicate to stakeholders the quantity/schedule of shipments going through their area. Potential bottlenecks in the transportation system can be identified; the number of packages needed, and the capacity needed at receiving facilities can be planned. This report offers a visualization of baseline DOE EM transportation activities for the 11 major sites and the “Geologic Repository Disposal” site (GRD).

  11. Immunization Schedules for Infants and Children

    MedlinePlus

    ... ACIP Vaccination Recommendations Why Immunize? Vaccines: The Basics Immunization Schedules for Infants and Children Recommend on Facebook ... any questions. View or Print a Schedule Recommended Immunizations for Children (Birth through 6 years) Schedule for ...

  12. Gang scheduling a parallel machine

    SciTech Connect

    Gorda, B.C.; Brooks, E.D. III.

    1991-03-01

    Program development on parallel machines can be a nightmare of scheduling headaches. We have developed a portable time sharing mechanism to handle the problem of scheduling gangs of processors. User program and their gangs of processors are put to sleep and awakened by the gang scheduler to provide a time sharing environment. Time quantums are adjusted according to priority queues and a system of fair share accounting. The initial platform for this software is the 128 processor BBN TC2000 in use in the Massively Parallel Computing Initiative at the Lawrence Livermore National Laboratory. 2 refs., 1 fig.

  13. 5 CFR 532.254 - Special schedules.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... exist in the private sector that are incompatible with regular schedule practices, and serious... authorization for a special schedule shall include instructions for its construction, application,...

  14. Scheduling Spitzer: The SIRPASS Story

    NASA Technical Reports Server (NTRS)

    Mittman, David S.; Hawkins, Robert

    2013-01-01

    NASA's Spitzer Space Telescope was launched on August 25, 2003 from Florida's Cape Canaveral Air Force Base. Drifting in a unique Earth-trailing orbit around the Sun, Spitzer sees an optically invisible universe dominated by dust and stars. Since 1997, the Spitzer Integrated Resource Planning and Scheduling System (SIRPASS) has helped produce spacecraft activity plans for the Spitzer Space Telescope. SIRPASS is used by members of the Observatory Planning and Scheduling Team to plan, schedule and sequence the Telescope from data made available to them from the science and engineering community. Because of the volume of data that needs to be scheduled, SIRPASS offers a variety of automated assistants to aid in this task. This paper will describe the functional elements of the SIRPASS software system -- emphasizing the role that automation plays in the system -- and will highlight lessons learned for the software developer from a decade of Spitzer Space Telescope operations experience.

  15. Progressive Ratio Schedules of Reinforcement

    PubMed Central

    Killeen, Peter R.; Posadas-Sanchez, Diana; Johansen, Espen Borgå; Thrailkill, Eric A.

    2009-01-01

    Pigeons’ pecks produced grain under progressive ratio (PR) schedules, whose response requirements increased systematically within sessions. Experiment 1 compared arithmetic (AP) and geometric (GP) progressions. Response rates increased as a function of the component ratio requirement, then decreased linearly (AP) or asymptotically (GP). Experiment 2 found the linear decrease in AP rates to be relatively independent of step size. Experiment 3 showed pausing to be controlled by the prior component length, which predicted the differences between PR and regressive ratio schedules found in Experiment 4. When the longest component ratios were signaled by different key colors, rates at moderate ratios increased, demonstrating control by forthcoming context. Models for response rate and pause duration described performance on AP schedules; GP schedules required an additional parameter representing the contextual reinforcement. PMID:19159161

  16. The GBT Dynamic Scheduling System

    NASA Astrophysics Data System (ADS)

    McCarty, M. T.; Balser, D. S.; Braatz, J.; Clark, M. H.; Condon, J.; Creager, R. E.; Maddalena, R. J.; Marganian, P.; O'Neil, K.; Sessoms, E.; Shelton, A. L.

    2012-09-01

    The Robert C. Byrd Green Bank Telescope (GBT) Dynamic Scheduling System (DSS), in use since September, 2009, was designed to maximize observing efficiency while preserving telescope flexibility and data quality without creating undue adversity for the observers. Using observing criteria; observer availability and qualifications for remote observing; three-dimensional weather forecasts; and telescope state, the DSS software optimally schedules observers 24 to 48 hours in advance for a telescope that has a wide-range of capabilities and a geographical location with variable weather patterns. The DSS project was closed October 28, 2011 and will now enter a continuing maintenance and enhancement phase. Recent improvements include a new resource calendar for incorporating telescope maintenance activities, a sensitivity calculator that leverages the scheduling algorithms to facilitate consistent tools for proposal preparation, improved support for monitoring observations, scheduling of high frequency continuum and spectral line observations for both sparse and fully sampled array receivers, and additional session parameters for observations having special requirements.

  17. Future aircraft networks and schedules

    NASA Astrophysics Data System (ADS)

    Shu, Yan

    2011-07-01

    Because of the importance of air transportation scheduling, the emergence of small aircraft and the vision of future fuel-efficient aircraft, this thesis has focused on the study of aircraft scheduling and network design involving multiple types of aircraft and flight services. It develops models and solution algorithms for the schedule design problem and analyzes the computational results. First, based on the current development of small aircraft and on-demand flight services, this thesis expands a business model for integrating on-demand flight services with the traditional scheduled flight services. This thesis proposes a three-step approach to the design of aircraft schedules and networks from scratch under the model. In the first step, both a frequency assignment model for scheduled flights that incorporates a passenger path choice model and a frequency assignment model for on-demand flights that incorporates a passenger mode choice model are created. In the second step, a rough fleet assignment model that determines a set of flight legs, each of which is assigned an aircraft type and a rough departure time is constructed. In the third step, a timetable model that determines an exact departure time for each flight leg is developed. Based on the models proposed in the three steps, this thesis creates schedule design instances that involve almost all the major airports and markets in the United States. The instances of the frequency assignment model created in this thesis are large-scale non-convex mixed-integer programming problems, and this dissertation develops an overall network structure and proposes iterative algorithms for solving these instances. The instances of both the rough fleet assignment model and the timetable model created in this thesis are large-scale mixed-integer programming problems, and this dissertation develops subproblem schemes for solving these instances. Based on these solution algorithms, this dissertation also presents

  18. Planning and scheduling for success

    NASA Technical Reports Server (NTRS)

    Manzanera, Ignacio

    1994-01-01

    Planning and scheduling programs are excellent management tools when properly introduced to the project management team and regularly maintained. Communications, creativity, flexibility and accuracy are substantially improved by following a simple set of rules. A planning and scheduling program will work for you if you believe in it, make others in your project team realize its benefits, and make it an extension of your project cost control philosophy.

  19. Non-clairvoyant Scheduling Games

    NASA Astrophysics Data System (ADS)

    Dürr, Christoph; Nguyen, Kim Thang

    In a scheduling game, each player owns a job and chooses a machine to execute it. While the social cost is the maximal load over all machines (makespan), the cost (disutility) of each player is the completion time of its own job. In the game, players may follow selfish strategies to optimize their cost and therefore their behaviors do not necessarily lead the game to an equilibrium. Even in the case there is an equilibrium, its makespan might be much larger than the social optimum, and this inefficiency is measured by the price of anarchy - the worst ratio between the makespan of an equilibrium and the optimum. Coordination mechanisms aim to reduce the price of anarchy by designing scheduling policies that specify how jobs assigned to a same machine are to be scheduled. Typically these policies define the schedule according to the processing times as announced by the jobs. One could wonder if there are policies that do not require this knowledge, and still provide a good price of anarchy. This would make the processing times be private information and avoid the problem of truthfulness. In this paper we study these so-called non-clairvoyant policies. In particular, we study the RANDOM policy that schedules the jobs in a random order without preemption, and the EQUI policy that schedules the jobs in parallel using time-multiplexing, assigning each job an equal fraction of CPU time.

  20. 77 FR 64848 - Proposed Collection; Comment Request for Form 1120S, Schedule D, Schedule K-1, and Schedule M-3

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-23

    ... Internal Revenue Service Proposed Collection; Comment Request for Form 1120S, Schedule D, Schedule K-1, and... With Total Assets of $10 Million or More, and Schedule K-1 (Form 1120S), Shareholder's Share of Income... Losses and Built-in Gains, Schedule K-1 (Form 1120S), Shareholder's Share of Income, Credits,...

  1. E-Scheduling the Deep Space Network

    NASA Technical Reports Server (NTRS)

    Smith, Jeffrey H.; Wang, Yeou-Fang

    2001-01-01

    This paper describes an operations concept for electronic scheduling and software interface for organizations to extract required views of the schedule. Advantages include widespread accessibility to a common schedule document, virtually instantaneous distribution of new schedule releases, and the ability of missions to perfom conflict resolution off-line without time-consuming meetings.

  2. Artificial intelligence approaches to astronomical observation scheduling

    NASA Technical Reports Server (NTRS)

    Johnston, Mark D.; Miller, Glenn

    1988-01-01

    Automated scheduling will play an increasing role in future ground- and space-based observatory operations. Due to the complexity of the problem, artificial intelligence technology currently offers the greatest potential for the development of scheduling tools with sufficient power and flexibility to handle realistic scheduling situations. Summarized here are the main features of the observatory scheduling problem, how artificial intelligence (AI) techniques can be applied, and recent progress in AI scheduling for Hubble Space Telescope.

  3. Scheduling: A guide for program managers

    NASA Technical Reports Server (NTRS)

    1994-01-01

    The following topics are discussed concerning scheduling: (1) milestone scheduling; (2) network scheduling; (3) program evaluation and review technique; (4) critical path method; (5) developing a network; (6) converting an ugly duckling to a swan; (7) network scheduling problem; (8) (9) network scheduling when resources are limited; (10) multi-program considerations; (11) influence on program performance; (12) line-of-balance technique; (13) time management; (14) recapitulization; and (15) analysis.

  4. Batch Scheduling a Fresh Approach

    NASA Technical Reports Server (NTRS)

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

    1994-01-01

    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

  5. The sleeping giant: Reinforcement schedules.

    PubMed

    Zeiler, M D

    1984-11-01

    Schedule research has been the core of operant conditioning, but it is no longer an active area, at least with respect to its traditional focus of describing and explaining moment-to-moment behavior. Yet schedules are central in psychology: Not only do they establish lawful behavior, but they also play a major role in determining the effects of other variables. The reason for the decline appears to be primarily theoretical, in that the work seems not to have led to meaningful integration. The search for controlling variables brought into play by schedule specification has proven unsuccessful, and a catalog of all possible schedule effects is of limited interest. The paper reviews the reasons for the contemporary state of affairs. One prediction about future developments is that instead of revealing component variables and their modes of interaction, schedule effects will be treated as basic empirical laws. Theory will take the form of abstract statements that integrate these separate laws by reference to higher-order principles rather than by reduction to supposedly simpler component variables.

  6. Environmental surveillance master sampling schedule

    SciTech Connect

    Bisping, L.E.

    1991-01-01

    Environmental surveillance of the Hanford Site and surrounding areas is conducted by the Pacific Northwest Laboratory (PNL) for the US Department of Energy (DOE). This document contains the planned schedule for routine sample collection for the Surface Environmental Surveillance Project (SESP) and Ground-Water Monitoring Project. The routine sampling plan for the SESP has been revised this year to reflect changing site operations and priorities. Some sampling previously performed at least annually has been reduced in frequency, and some new sampling to be performed at a less than annual frequency has been added. Therefore, the SESP schedule reflects sampling to be conducted in calendar year 1991 as well as future years. The ground-water sampling schedule is for 1991. This schedule is subject to modification during the year in response to changes in Site operation, program requirements, and the nature of the observed results. Operational limitations such as weather, mechanical failures, sample availability, etc., may also require schedule modifications. Changes will be documented in the respective project files, but this plan will not be reissued. The purpose of these monitoring projects is to evaluate levels of radioactive and nonradioactive pollutants in the Hanford evirons.

  7. The sleeping giant: Reinforcement schedules

    PubMed Central

    Zeiler, Michael D.

    1984-01-01

    Schedule research has been the core of operant conditioning, but it is no longer an active area, at least with respect to its traditional focus of describing and explaining moment-to-moment behavior. Yet schedules are central in psychology: Not only do they establish lawful behavior, but they also play a major role in determining the effects of other variables. The reason for the decline appears to be primarily theoretical, in that the work seems not to have led to meaningful integration. The search for controlling variables brought into play by schedule specification has proven unsuccessful, and a catalog of all possible schedule effects is of limited interest. The paper reviews the reasons for the contemporary state of affairs. One prediction about future developments is that instead of revealing component variables and their modes of interaction, schedule effects will be treated as basic empirical laws. Theory will take the form of abstract statements that integrate these separate laws by reference to higher-order principles rather than by reduction to supposedly simpler component variables. PMID:16812403

  8. A Generic Expert Scheduling System Architecture and Toolkit: GUESS (Generically Used Expert Scheduling System)

    NASA Technical Reports Server (NTRS)

    Liebowitz, Jay; Krishnamurthy, Vijaya; Rodens, Ira; Houston, Chapman; Liebowitz, Alisa; Baek, Seung; Radko, Joe; Zeide, Janet

    1996-01-01

    Scheduling has become an increasingly important element in today's society and workplace. Within the NASA environment, scheduling is one of the most frequently performed and challenging functions. Towards meeting NASA's scheduling needs, a research version of a generic expert scheduling system architecture and toolkit has been developed. This final report describes the development and testing of GUESS (Generically Used Expert Scheduling System).

  9. Computerized Schedule Effectiveness Technique /SET/ determines present and future schedule position

    NASA Technical Reports Server (NTRS)

    Ballard, D.; Birdsong, J.; Calva, R.

    1967-01-01

    Computerized scheduling system calculates an index of overall schedule-effectiveness. The schedule-effectiveness index is a measurement of actual overall performance against the existing schedule, and a series of schedule-effectiveness values indicates the trend of actual performance. This computer program is written in Fortran 4.

  10. Optimal randomized scheduling by replacement

    SciTech Connect

    Saias, I.

    1996-05-01

    In the replacement scheduling problem, a system is composed of n processors drawn from a pool of p. The processors can become faulty while in operation and faulty processors never recover. A report is issued whenever a fault occurs. This report states only the existence of a fault but does not indicate its location. Based on this report, the scheduler can reconfigure the system and choose another set of n processors. The system operates satisfactorily as long as, upon report of a fault, the scheduler chooses n non-faulty processors. We provide a randomized protocol maximizing the expected number of faults the system can sustain before the occurrence of a crash. The optimality of the protocol is established by considering a closely related dual optimization problem. The game-theoretic technical difficulties that we solve in this paper are very general and encountered whenever proving the optimality of a randomized algorithm in parallel and distributed computation.

  11. Environmental surveillance master sampling schedule

    SciTech Connect

    Bisping, L.E.

    1997-01-01

    Environmental surveillance of the Hanford Site and surrounding areas is conducted by the Pacific Northwest National Laboratory (PNNL)(a) for the US Department of Energy (DOE). This document contains the planned 1997 schedules for routine collection of samples for the Surface Environmental Surveillance Project (SESP) and Drinking Water Monitoring Project. In addition, Section 3.0, Biota, also reflects a rotating collection schedule identifying the year a specific sample is scheduled for collection. The purpose of these monitoring projects is to evaluate levels of radioactive and nonradioactive pollutants in the Hanford environs, as required in DOE Order 5400.1, General Environmental Protection Program, and DOE Order 5400.5, Radiation Protection of the Public and the Environment. The sampling methods will be the same as those described in the Environmental Monitoring Plan, US Department of Energy, Richland Operations Office, DOE/RL91-50, Rev. 1, US Department of Energy, Richland, Washington.

  12. [Fee schedules and cost containment].

    PubMed

    Herrmann, François R; Perneger, Thomas

    2009-11-11

    Medical fee schedules are controversial. In this paper we examine the reasons that justify the imposition of fee schedules in the presence of a socially financed health insurance system, and examine the ways of constructing a medical fee schedule. The weakness of fee-for-service tariffs is that they do not allow a control of health care costs if the volume of services is unchecked. Current solutions to this problem--audit of doctors' average cost per case, freeze on new medical practices, or the insurers' discretion in choosing the doctors they reimburse--have multiple drawbacks. Alternatives to fee-for-service payment--such as flat fees, or payment based on the quality of medical services--are discussed.

  13. A planning and scheduling lexicon

    NASA Technical Reports Server (NTRS)

    Cruz, Jennifer W.; Eggemeyer, William C.

    1989-01-01

    A lexicon related to mission planning and scheduling for spacecraft is presented. Planning and scheduling work is known as sequencing. Sequencing is a multistage process of merging requests from both the science and engineering arenas to accomplish the objectives defined in the requests. The multistage process begins with the creation of science and engineering goals, continues through their integration into the sequence, and eventually concludes with command execution onboard the spacecraft. The objective of this publication is to introduce some formalism into the field of spacecraft sequencing-system technology. This formalism will make it possible for researchers and potential customers to communicate about system requirements and capabilities in a common language.

  14. Hubble Systems Optimize Hospital Schedules

    NASA Technical Reports Server (NTRS)

    2009-01-01

    Don Rosenthal, a former Ames Research Center computer scientist who helped design the Hubble Space Telescope's scheduling software, co-founded Allocade Inc. of Menlo Park, California, in 2004. Allocade's OnCue software helps hospitals reclaim unused capacity and optimize constantly changing schedules for imaging procedures. After starting to use the software, one medical center soon reported noticeable improvements in efficiency, including a 12 percent increase in procedure volume, 35 percent reduction in staff overtime, and significant reductions in backlog and technician phone time. Allocade now offers versions for outpatient and inpatient magnetic resonance imaging (MRI), ultrasound, interventional radiology, nuclear medicine, Positron Emission Tomography (PET), radiography, radiography-fluoroscopy, and mammography.

  15. Sleep and circadian schedule disorders.

    PubMed

    Labyak, Susan

    2002-12-01

    The timing and synchronization of human circadian rhythms is important for health and well-being. Some individuals, for reasons that remain unclear, display less resilience or flexibility in their ability to synchronize to the 24-hour world and are thus diagnosed with a circadian schedule disorder. The objective of this article is to briefly introduce concepts about human circadian timing and to review what is known about chronic, long-term circadian schedule disorders such as delayed sleep phase syndrome, advanced sleep phase syndrome, irregular sleep-wake patterns, and non-24-hour sleep-wake disorder. Practical considerations for the clinician caring for these individuals are discussed. PMID:12587363

  16. Intelligent perturbation algorithms for space scheduling optimization

    NASA Technical Reports Server (NTRS)

    Kurtzman, Clifford R.

    1991-01-01

    Intelligent perturbation algorithms for space scheduling optimization are presented in the form of the viewgraphs. The following subject areas are covered: optimization of planning, scheduling, and manifesting; searching a discrete configuration space; heuristic algorithms used for optimization; use of heuristic methods on a sample scheduling problem; intelligent perturbation algorithms are iterative refinement techniques; properties of a good iterative search operator; dispatching examples of intelligent perturbation algorithm and perturbation operator attributes; scheduling implementations using intelligent perturbation algorithms; major advances in scheduling capabilities; the prototype ISF (industrial Space Facility) experiment scheduler; optimized schedule (max revenue); multi-variable optimization; Space Station design reference mission scheduling; ISF-TDRSS command scheduling demonstration; and example task - communications check.

  17. 1996 Wholesale Power and Transmission Rate Schedules.

    SciTech Connect

    United States. Bonneville Power Administration.

    1996-10-01

    Bonneville Power Administration`s (BPA) 1996 Wholesale Power Rate Schedules, 1996 Ancillary Products and Services Rate Schedule, 1996 Transmission Rate Schedules, and General Rate Schedule Provisions, contained herein, were approved on an interim basis effective October 1, 1996. These rate schedules and provisions were approved by the Federal Energy Regulatory Commission (FERC), United States Department of Energy, in September 1996 (Docket Nos EF96-2011-000 and EF96f-2021-000). These rate schedules and General Rate Schedule Provisions were approved on a final basis by the FERC July 30, 1997, in Dept. of Energy--Bonneville Power Administration, Docket Nos. EF96-2011-000 and EF96-2021-000. Except as noted elsewhere, these 1996 rate schedules and provisions supersede BPA`s Wholesale Power Rate Schedules and General Rate Schedule Provisions, and Transmission Rate Schedules and General Transmission Rate Schedule Provisions, effective October 1, 1995. These rate schedules and general rate schedule provisions include all errata.

  18. User requirements for a patient scheduling system

    NASA Technical Reports Server (NTRS)

    Zimmerman, W.

    1979-01-01

    A rehabilitation institute's needs and wants from a scheduling system were established by (1) studying the existing scheduling system and the variables that affect patient scheduling, (2) conducting a human-factors study to establish the human interfaces that affect patients' meeting prescribed therapy schedules, and (3) developing and administering a questionnaire to the staff which pertains to the various interface problems in order to identify staff requirements to minimize scheduling problems and other factors that may limit the effectiveness of any new scheduling system.

  19. Environmental surveillance master sampling schedule

    SciTech Connect

    Bisping, L.E.

    1996-02-01

    Environmental surveillance of the Hanford Site and surrounding areas is conducted by the Pacific Northwest National Laboratory (PNNL) for the US Department of Energy (DOE). This document contains the planned 1996 schedules for routine collection of samples for the Surface Environmental Surveillance Project (SESP), Drinking Water Project, and Ground-Water Surveillance Project.

  20. Block Scheduling: Three Years Later.

    ERIC Educational Resources Information Center

    Corley, Edward L.

    This is a followup study of teacher perceptions regarding block scheduling. The original study was done in 1996 at a small city high school in a predominantly rural county in Ohio. At that time, lack of communication was found to be the central theme in the resistance that emerged. This paper is based on data from written responses to open-ended…

  1. A scheduling model for astronomy

    NASA Astrophysics Data System (ADS)

    Solar, M.; Michelon, P.; Avarias, J.; Garces, M.

    2016-04-01

    Astronomical scheduling problem has several external conditions that change dynamically at any time during observations, like weather condition (humidity, temperature, wind speed, opacity, etc.), and target visibility conditions (target over the horizon, Sun/Moon blocking the target). Therefore, a dynamic re-scheduling is needed. An astronomical project will be scheduled as one or more Scheduling Blocks (SBs) as an atomic unit of astronomical observations. We propose a mixed integer linear programming (MILP) solution to select the best SBs, favors SBs with high scientific values, and thus maximizing the quantity of completed observation projects. The data content of Atacama Large Millimeter/Submillimeter Array (ALMA) projects of cycle 0 and cycle 1 were analyzed, and a synthetic set of tests of the real instances was created. Two configurations, one of 5000 SBs in a 3 months season and another 10,000 SBs a 6 months season were created. These instances were evaluated with excellent results. Through the testing it is showed that the MILP proposal has optimal solutions.

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

    PubMed

    Luczynski, Kevin C; Hanley, Gregory P

    2014-01-01

    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.

  3. Adaptive Parallel Job Scheduling with Flexible CoScheduling

    SciTech Connect

    Frachtenberg, Eitan; Feitelson, Dror; Petrini, Fabrizio; Fernandez, Juan

    2005-11-01

    Abstract—Many scientific and high-performance computing applications consist of multiple processes running on different processors that communicate frequently. Because of their synchronization needs, these applications can suffer severe performance penalties if their processes are not all coscheduled to run together. Two common approaches to coscheduling jobs are batch scheduling, wherein nodes are dedicated for the duration of the run, and gang scheduling, wherein time slicing is coordinated across processors. Both work well when jobs are load-balanced and make use of the entire parallel machine. However, these conditions are rarely met and most realistic workloads consequently suffer from both internal and external fragmentation, in which resources and processors are left idle because jobs cannot be packed with perfect efficiency. This situation leads to reduced utilization and suboptimal performance. Flexible CoScheduling (FCS) addresses this problem by monitoring each job’s computation granularity and communication pattern and scheduling jobs based on their synchronization and load-balancing requirements. In particular, jobs that do not require stringent synchronization are identified, and are not coscheduled; instead, these processes are used to reduce fragmentation. FCS has been fully implemented on top of the STORM resource manager on a 256-processor Alpha cluster and compared to batch, gang, and implicit coscheduling algorithms. This paper describes in detail the implementation of FCS and its performance evaluation with a variety of workloads, including large-scale benchmarks, scientific applications, and dynamic workloads. The experimental results show that FCS saturates at higher loads than other algorithms (up to 54 percent higher in some cases), and displays lower response times and slowdown than the other algorithms in nearly all scenarios.

  4. 40 CFR 52.825 - Compliance schedules.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... schedule. Editorial Note: For Federal Register citations affecting § 52.825, see the List of CFR Sections... variances if source(s) is on an accepted and approved compliance schedule. Note 3: City of Des...

  5. A DSN optimal spacecraft scheduling model

    NASA Technical Reports Server (NTRS)

    Webb, W. A.

    1982-01-01

    A computer model is described which uses mixed-integer linear programming to provide optimal DSN spacecraft schedules given a mission set and specified scheduling requirements. A solution technique is proposed which uses Bender's Method and a heuristic starting algorithm.

  6. Integrating protocol schedules with patients' personal calendars.

    PubMed

    Civan, Andrea; Gennari, John H; Pratt, Wanda

    2006-01-01

    We propose a new approach for integrating protocol care schedules into patients' personal calendars. This approach could provide patients with greater control over their current and future scheduling demands as they seek and receive protocol-based care. PMID:17238511

  7. Immunization Schedules for Preteens and Teens

    MedlinePlus

    ... ACIP Vaccination Recommendations Why Immunize? Vaccines: The Basics Immunization Schedules for Preteens and Teens Recommend on Facebook ... on track. View or Print a Schedule Recommended Immunizations for Preteens and Teens (7-18 years) 2016 ...

  8. 48 CFR 245.606 - Inventory schedules.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Inventory schedules. 245.606 Section 245.606 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM... Contractor Inventory 245.606 Inventory schedules....

  9. 11 CFR 9006.3 - Alphabetized schedules.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... FINANCING REPORTS AND RECORDKEEPING § 9006.3 Alphabetized schedules. If the authorized committee(s) of a candidate file a schedule of itemized receipts, disbursements, or debts and obligations pursuant to 11...

  10. Real-time scheduling using minimum search

    NASA Technical Reports Server (NTRS)

    Tadepalli, Prasad; Joshi, Varad

    1992-01-01

    In this paper we consider a simple model of real-time scheduling. We present a real-time scheduling system called RTS which is based on Korf's Minimin algorithm. Experimental results show that the schedule quality initially improves with the amount of look-ahead search and tapers off quickly. So it sppears that reasonably good schedules can be produced with a relatively shallow search.

  11. 40 CFR 141.702 - Sampling schedules.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 24 2013-07-01 2013-07-01 false Sampling schedules. 141.702 Section... Monitoring Requirements § 141.702 Sampling schedules. (a) Systems required to conduct source water monitoring under § 141.701 must submit a sampling schedule that specifies the calendar dates when the system...

  12. 9 CFR 390.6 - Fee schedule.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Fee schedule. 390.6 Section 390.6 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE FOOD SAFETY AND... schedule. Department regulations provide for a schedule of reasonable standard charges for document...

  13. 77 FR 41258 - FOIA Fee Schedule Update

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-13

    ... Proposed FOIA Fee Schedule, 77 FR 32433. No comments were received in response to that notice, and the... Schedule Update went into effect on July 29, 2011. 76 FR 43819. Board Action Accordingly, the Board issues... SAFETY BOARD 10 CFR Part 1703 FOIA Fee Schedule Update AGENCY: Defense Nuclear Facilities Safety...

  14. 21 CFR 1308.49 - Emergency scheduling.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 9 2010-04-01 2010-04-01 false Emergency scheduling. 1308.49 Section 1308.49 Food and Drugs DRUG ENFORCEMENT ADMINISTRATION, DEPARTMENT OF JUSTICE SCHEDULES OF CONTROLLED SUBSTANCES Hearings § 1308.49 Emergency scheduling. Pursuant to 21 U.S.C. 811(h) and without regard to...

  15. 19 CFR 122.63 - Scheduled airlines.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 19 Customs Duties 1 2014-04-01 2014-04-01 false Scheduled airlines. 122.63 Section 122.63 Customs... AIR COMMERCE REGULATIONS Clearance of Aircraft and Permission To Depart § 122.63 Scheduled airlines... scheduled airlines covered by this subpart. (a) Clearance at other than airport of final departure....

  16. 19 CFR 122.63 - Scheduled airlines.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 19 Customs Duties 1 2011-04-01 2011-04-01 false Scheduled airlines. 122.63 Section 122.63 Customs... AIR COMMERCE REGULATIONS Clearance of Aircraft and Permission To Depart § 122.63 Scheduled airlines... scheduled airlines covered by this subpart. (a) Clearance at other than airport of final departure....

  17. 19 CFR 122.63 - Scheduled airlines.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Scheduled airlines. 122.63 Section 122.63 Customs... AIR COMMERCE REGULATIONS Clearance of Aircraft and Permission To Depart § 122.63 Scheduled airlines... scheduled airlines covered by this subpart. (a) Clearance at other than airport of final departure....

  18. 19 CFR 122.63 - Scheduled airlines.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 19 Customs Duties 1 2012-04-01 2012-04-01 false Scheduled airlines. 122.63 Section 122.63 Customs... AIR COMMERCE REGULATIONS Clearance of Aircraft and Permission To Depart § 122.63 Scheduled airlines... scheduled airlines covered by this subpart. (a) Clearance at other than airport of final departure....

  19. 19 CFR 122.63 - Scheduled airlines.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 19 Customs Duties 1 2013-04-01 2013-04-01 false Scheduled airlines. 122.63 Section 122.63 Customs... AIR COMMERCE REGULATIONS Clearance of Aircraft and Permission To Depart § 122.63 Scheduled airlines... scheduled airlines covered by this subpart. (a) Clearance at other than airport of final departure....

  20. Response Strength in Extreme Multiple Schedules

    ERIC Educational Resources Information Center

    McLean, Anthony P.; Grace, Randolph C.; Nevin, John A.

    2012-01-01

    Four pigeons were trained in a series of two-component multiple schedules. Reinforcers were scheduled with random-interval schedules. The ratio of arranged reinforcer rates in the two components was varied over 4 log units, a much wider range than previously studied. When performance appeared stable, prefeeding tests were conducted to assess…

  1. Models of ratio schedule performance.

    PubMed

    Bizo, L A; Killeen, P R

    1997-07-01

    Predictions of P. R. Killeen's (1994) mathematical principles of reinforcement were tested for responding on ratio reinforcement schedules. The type of response key, the number of sessions per condition, and first vs. second half of a session had negligible effects on responding. Longer reinforcer durations and larger grain types engendered more responding, affecting primarily the parameter alpha (specific activation). Key pecking was faster than treadle pressing, affecting primarily the parameter delta (response time). Longer intertrial intervals led to higher overall response rates and shorter postreinforcement pauses and higher running rates, and ruled out some competing explanations. The treadle data required a distinction between the energetic requirements and rate-limiting properties of extended responses. The theory was extended to predict pause durations and run rates on ratio schedules.

  2. Fast Randomized STDMA Link Scheduling

    NASA Astrophysics Data System (ADS)

    Gomez, Sergio; Gras, Oriol; Friderikos, Vasilis

    In this paper a fast randomized parallel link swap based packing (RSP) algorithm for timeslot allocation in a spatial time division multiple access (STDMA) wireless mesh network is presented. The proposed randomized algorithm extends several greedy scheduling algorithms that utilize the physical interference model by applying a local search that leads to a substantial improvement in the spatial timeslot reuse. Numerical simulations reveal that compared to previously scheduling schemes the proposed randomized algorithm can achieve a performance gain of up to 11%. A significant benefit of the proposed scheme is that the computations can be parallelized and therefore can efficiently utilize commoditized and emerging multi-core and/or multi-CPU processors.

  3. 49 CFR Schedule C to Subpart B of... - Schedule C to Subpart B of Part 1139

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 8 2014-10-01 2014-10-01 false Schedule C to Subpart B of Part 1139 C Schedule C... REVENUE PROCEEDINGS Intercity Bus Industry Pt. 1139, Subpt. B, Sch. C Schedule C to Subpart B of Part 1139 Attachment 1 Schedule C Part I—Condensed Income Statement () Greyhound Lines, Inc.()Trailways combined()...

  4. 49 CFR Schedule C to Subpart B of... - Schedule C to Subpart B of Part 1139

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 8 2010-10-01 2010-10-01 false Schedule C to Subpart B of Part 1139 C Schedule C... REVENUE PROCEEDINGS Intercity Bus Industry Pt. 1139, Subpt. B, Sch. C Schedule C to Subpart B of Part 1139 Attachment 1 Schedule C Part I—Condensed Income Statement () Greyhound Lines, Inc.()Trailways combined()...

  5. 29 CFR 825.203 - Scheduling of intermittent or reduced schedule leave.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... OF LABOR OTHER LAWS THE FAMILY AND MEDICAL LEAVE ACT OF 1993 Employee Leave Entitlements Under the Family and Medical Leave Act § 825.203 Scheduling of intermittent or reduced schedule leave. Eligible... 29 Labor 3 2014-07-01 2014-07-01 false Scheduling of intermittent or reduced schedule......

  6. 29 CFR 825.203 - Scheduling of intermittent or reduced schedule leave.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... OF LABOR OTHER LAWS THE FAMILY AND MEDICAL LEAVE ACT OF 1993 Employee Leave Entitlements Under the Family and Medical Leave Act § 825.203 Scheduling of intermittent or reduced schedule leave. Eligible... 29 Labor 3 2010-07-01 2010-07-01 false Scheduling of intermittent or reduced schedule......

  7. 29 CFR 825.203 - Scheduling of intermittent or reduced schedule leave.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... OF LABOR OTHER LAWS THE FAMILY AND MEDICAL LEAVE ACT OF 1993 Employee Leave Entitlements Under the Family and Medical Leave Act § 825.203 Scheduling of intermittent or reduced schedule leave. Eligible... 29 Labor 3 2012-07-01 2012-07-01 false Scheduling of intermittent or reduced schedule......

  8. 29 CFR 825.203 - Scheduling of intermittent or reduced schedule leave.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... OF LABOR OTHER LAWS THE FAMILY AND MEDICAL LEAVE ACT OF 1993 Employee Leave Entitlements Under the Family and Medical Leave Act § 825.203 Scheduling of intermittent or reduced schedule leave. Eligible... 29 Labor 3 2013-07-01 2013-07-01 false Scheduling of intermittent or reduced schedule......

  9. 29 CFR 825.203 - Scheduling of intermittent or reduced schedule leave.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... OF LABOR OTHER LAWS THE FAMILY AND MEDICAL LEAVE ACT OF 1993 Employee Leave Entitlements Under the Family and Medical Leave Act § 825.203 Scheduling of intermittent or reduced schedule leave. Eligible... 29 Labor 3 2011-07-01 2011-07-01 false Scheduling of intermittent or reduced schedule......

  10. Environmental surveillance master sampling schedule

    SciTech Connect

    Bisping, L.E.

    1993-01-01

    Environmental surveillance of the Hanford Site and surrounding areas is conducted by the Pacific Northwest Laboratory (PNL) for the US Department of Energy (DOE). Samples are routinely collected and analyzed to determine the quality of air, surface water, ground water, soil, sediment, wildlife, vegetation, foodstuffs, and farm products at Hanford Site and surrounding communities. This document contains the planned schedule for routine sample collection for the Surface Environmental Surveillance Project (SESP) and Drinking Water Project, and Ground-Water Surveillance Project.

  11. Environmental surveillance master sampling schedule

    SciTech Connect

    Bisping, L.E.

    1995-02-01

    Environmental surveillance of the Hanford Site and surrounding areas is conducted by the Pacific Northwest Laboratory (PNL) for the U.S. Department of Energy (DOE). This document contains the planned 1994 schedules for routine collection of samples for the Surface Environmental Surveillance Project (SESP), Drinking Water Project, and Ground-Water Surveillance Project. Samples are routinely collected for the SESP and analyzed to determine the quality of air, surface water, soil, sediment, wildlife, vegetation, foodstuffs, and farm products at Hanford Site and surrounding communities. The responsibility for monitoring onsite drinking water falls outside the scope of the SESP. PNL conducts the drinking water monitoring project concurrent with the SESP to promote efficiency and consistency, utilize expertise developed over the years, and reduce costs associated with management, procedure development, data management, quality control, and reporting. The ground-water sampling schedule identifies ground-water sampling .events used by PNL for environmental surveillance of the Hanford Site. Sampling is indicated as annual, semi-annual, quarterly, or monthly in the sampling schedule. Some samples are collected and analyzed as part of ground-water monitoring and characterization programs at Hanford (e.g. Resources Conservation and Recovery Act (RCRA), Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), or Operational). The number of samples planned by other programs are identified in the sampling schedule by a number in the analysis column and a project designation in the Cosample column. Well sampling events may be merged to avoid redundancy in cases where sampling is planned by both-environmental surveillance and another program.

  12. Intelsat satellite scheduled for launch

    NASA Technical Reports Server (NTRS)

    1981-01-01

    The launch schedule for Intelsat 5-B, the prime Intelsat satellite to provide communications services between the Americas, Europe, the Middle East, and Africa, is presented. The planned placement of the satellite into an elliptical transfer orbit, and circularization of the orbit at geosynchronous altitude over the equator are described. Characteristics of the Atlas Centaur launch vehicle, AC-56, are given. The launch operation is summarized and the launch sequence presented. The Intelsat team and contractors are listed.

  13. Scheduled Peripheral Component Interconnect Arbiter

    NASA Technical Reports Server (NTRS)

    Nixon, Scott Alan (Inventor)

    2015-01-01

    Systems and methods are described for arbitrating access of a communication bus. In one embodiment, a method includes performing steps on one or more processors. The steps include: receiving an access request from a device of the communication bus; evaluating a bus schedule to determine an importance of the device based on the access request; and selectively granting access of the communication bus to the device based on the importance of the device.

  14. Obtaining schedules for digital systems

    NASA Technical Reports Server (NTRS)

    Jagadish, H. V.; Kailath, Thomas

    1991-01-01

    A systematic technique is presented to derive correct schedules for a synchronous digital system, given a signal flow graph for an algorithm. It is also shown how to use this technique to derive designs that are optimal in having the lowest latency, the highest throughput, or the smallest number of registers. The same technique can also be used to verify digital systems that have already been designed.

  15. Ada and cyclic runtime scheduling

    NASA Technical Reports Server (NTRS)

    Hood, Philip E.

    1986-01-01

    An important issue that must be faced while introducing Ada into the real time world is efficient and prodictable runtime behavior. One of the most effective methods employed during the traditional design of a real time system is the cyclic executive. The role cyclic scheduling might play in an Ada application in terms of currently available implementations and in terms of implementations that might be developed especially to support real time system development is examined. The cyclic executive solves many of the problems faced by real time designers, resulting in a system for which it is relatively easy to achieve approporiate timing behavior. Unfortunately a cyclic executive carries with it a very high maintenance penalty over the lifetime of the software that is schedules. Additionally, these cyclic systems tend to be quite fragil when any aspect of the system changes. The findings are presented of an ongoing SofTech investigation into Ada methods for real time system development. The topics covered include a description of the costs involved in using cyclic schedulers, the sources of these costs, and measures for future systems to avoid these costs without giving up the runtime performance of a cyclic system.

  16. Scheduler Design Criteria: Requirements and Considerations

    NASA Technical Reports Server (NTRS)

    Lee, Hanbong

    2016-01-01

    This presentation covers fundamental requirements and considerations for developing schedulers in airport operations. We first introduce performance and functional requirements for airport surface schedulers. Among various optimization problems in airport operations, we focus on airport surface scheduling problem, including runway and taxiway operations. We then describe a basic methodology for airport surface scheduling such as node-link network model and scheduling algorithms previously developed. Next, we explain how to design a mathematical formulation in more details, which consists of objectives, decision variables, and constraints. Lastly, we review other considerations, including optimization tools, computational performance, and performance metrics for evaluation.

  17. A planning language for activity scheduling

    NASA Technical Reports Server (NTRS)

    Zoch, David R.; Lavallee, David; Weinstein, Stuart; Tong, G. Michael

    1991-01-01

    Mission planning and scheduling of spacecraft operations are becoming more complex at NASA. Described here are a mission planning process; a robust, flexible planning language for spacecraft and payload operations; and a software scheduling system that generates schedules based on planning language inputs. The mission planning process often involves many people and organizations. Consequently, a planning language is needed to facilitate communication, to provide a standard interface, and to represent flexible requirements. The software scheduling system interprets the planning language and uses the resource, time duration, constraint, and alternative plan flexibilities to resolve scheduling conflicts.

  18. EOS distributed planning and scheduling prototype

    NASA Technical Reports Server (NTRS)

    Hull, Larry G.; Peters, Stephen F.; Davis, Randy

    1993-01-01

    Some of the more significant lessons learned during the development of the Earth Observing System (EOS) Distributed Planning and Scheduling Prototype are presented. The need for a central scheduler is not demonstrated. A mapping of scheduling and conflict-resolution responsibility across the nodes of the EOS distributed scheduling system is developed and shown to be both feasible and appropriate. Complex instrument scheduling is mostly accomplished at the ICC/IST (instrument control center/instrumental support terminal) with 'slidable' flexibility for slews and some kinds of calibrations resolved at the EOS Operations Center (EOC). All nodes have full visibility interinstrument contention for resource and environmental rights, e.g., vibration, thermal, and electromagnetic. The EOC assigns, by activity, initial action responsibility for conflict resolution to a node which is party to the conflict. Most interinstrument conflicts are resolved by the ICCs and ISTs during an intermediate scheduling phase while the EOC is negotiating a TDRS schedule with the NCC.

  19. A System for Automatically Generating Scheduling Heuristics

    NASA Technical Reports Server (NTRS)

    Morris, Robert

    1996-01-01

    The goal of this research is to improve the performance of automated schedulers by designing and implementing an algorithm by automatically generating heuristics by selecting a schedule. The particular application selected by applying this method solves the problem of scheduling telescope observations, and is called the Associate Principal Astronomer. The input to the APA scheduler is a set of observation requests submitted by one or more astronomers. Each observation request specifies an observation program as well as scheduling constraints and preferences associated with the program. The scheduler employs greedy heuristic search to synthesize a schedule that satisfies all hard constraints of the domain and achieves a good score with respect to soft constraints expressed as an objective function established by an astronomer-user.

  20. Mission and science activity scheduling language

    NASA Technical Reports Server (NTRS)

    Hull, Larry G.

    1993-01-01

    To support the distributed and complex operational scheduling required for future National Aeronautics and Space Administration (NASA) missions, a formal, textual language, the Scheduling Applications Interface Language (SAIL), has been developed. Increased geographic dispersion of investigators is leading to distributed mission and science activity planning, scheduling, and operations. SAIL is an innovation which supports the effective and efficient communication of scheduling information among physically dispersed applications in distributed scheduling environments. SAIL offers a clear, concise, unambiguous expression of scheduling information in a readable, hardware independent format. The language concept, syntax, and semantics incorporate language features found useful during five years of research and prototyping with scheduling languages in physically distributed environments. SAIL allows concise specification of mission and science activity plans in a format which promotes repetition and reuse.

  1. Scheduling of an aircraft fleet

    NASA Technical Reports Server (NTRS)

    Paltrinieri, Massimo; Momigliano, Alberto; Torquati, Franco

    1992-01-01

    Scheduling is the task of assigning resources to operations. When the resources are mobile vehicles, they describe routes through the served stations. To emphasize such aspect, this problem is usually referred to as the routing problem. In particular, if vehicles are aircraft and stations are airports, the problem is known as aircraft routing. This paper describes the solution to such a problem developed in OMAR (Operative Management of Aircraft Routing), a system implemented by Bull HN for Alitalia. In our approach, aircraft routing is viewed as a Constraint Satisfaction Problem. The solving strategy combines network consistency and tree search techniques.

  2. Environmental surveillance master sampling schedule

    SciTech Connect

    Bisping, L.E.

    1994-02-01

    This document contains the planned 1994 schedules for routine collection of samples for the Surface Environmental Surveillance Project (SESP), Drinking Water Project, and Ground-Water Surveillance Project. Samples are routinely collected for the SESP and analyzed to determine the quality of air, surface water, soil, sediment, wildlife, vegetation, foodstuffs, and farm products at Hanford Site and surrounding communities. The responsibility for monitoring the onsite drinking water falls outside the scope of the SESP. The Hanford Environmental Health Foundation is responsible for monitoring the nonradiological parameters as defined in the National Drinking Water Standards while PNL conducts the radiological monitoring of the onsite drinking water. PNL conducts the drinking water monitoring project concurrent with the SESP to promote efficiency and consistency, utilize the expertise developed over the years, and reduce costs associated with management, procedure development, data management, quality control and reporting. The ground-water sampling schedule identifies ground-water sampling events used by PNL for environmental surveillance of the Hanford Site.

  3. Steps Toward Optimal Competitive Scheduling

    NASA Technical Reports Server (NTRS)

    Frank, Jeremy; Crawford, James; Khatib, Lina; Brafman, Ronen

    2006-01-01

    This paper is concerned with the problem of allocating a unit capacity resource to multiple users within a pre-defined time period. The resource is indivisible, so that at most one user can use it at each time instance. However, different users may use it at different times. The users have independent, se@sh preferences for when and for how long they are allocated this resource. Thus, they value different resource access durations differently, and they value different time slots differently. We seek an optimal allocation schedule for this resource. This problem arises in many institutional settings where, e.g., different departments, agencies, or personal, compete for a single resource. We are particularly motivated by the problem of scheduling NASA's Deep Space Satellite Network (DSN) among different users within NASA. Access to DSN is needed for transmitting data from various space missions to Earth. Each mission has different needs for DSN time, depending on satellite and planetary orbits. Typically, the DSN is over-subscribed, in that not all missions will be allocated as much time as they want. This leads to various inefficiencies - missions spend much time and resource lobbying for their time, often exaggerating their needs. NASA, on the other hand, would like to make optimal use of this resource, ensuring that the good for NASA is maximized. This raises the thorny problem of how to measure the utility to NASA of each allocation. In the typical case, it is difficult for the central agency, NASA in our case, to assess the value of each interval to each user - this is really only known to the users who understand their needs. Thus, our problem is more precisely formulated as follows: find an allocation schedule for the resource that maximizes the sum of users preferences, when the preference values are private information of the users. We bypass this problem by making the assumptions that one can assign money to customers. This assumption is reasonable; a

  4. A prototype combinatorial scheduler for space-borne observational instruments

    NASA Technical Reports Server (NTRS)

    Gilstrap, Lewey O.; Botten, Leroy H.; Strang, Robert F.

    1988-01-01

    A prototype scheduler has been developed for observations to be carried out by the NASA Gamma Ray Observatory. The purpose of the scheduling system is to provide an automated method to determine optimized schedules conforming to all scheduling guidelines. Strategies used in creating COMPTEL/EGRET schedules and in scheduling OSSE targets are examined. It is concluded that the hybrid scheduler creates optimal schedules, or very nearly optimal schedules, and reduces the estimated scheduling time by 18 or 19 orders of magnitude, from about 10 to the 14th years to as few as 561 seconds.

  5. Dynamic Proportional Share Scheduling in Hadoop

    NASA Astrophysics Data System (ADS)

    Sandholm, Thomas; Lai, Kevin

    We present the Dynamic Priority (DP) parallel task scheduler for Hadoop. It allows users to control their allocated capacity by adjusting their spending over time. This simple mechanism allows the scheduler to make more efficient decisions about which jobs and users to prioritize and gives users the tool to optimize and customize their allocations to fit the importance and requirements of their jobs. Additionally, it gives users the incentive to scale back their jobs when demand is high, since the cost of running on a slot is then also more expensive. We envision our scheduler to be used by deadline or budget optimizing agents on behalf of users. We describe the design and implementation of the DP scheduler and experimental results. We show that our scheduler enforces service levels more accurately and also scales to more users with distinct service levels than existing schedulers.

  6. Schedule tightness among tractor-trailer drivers.

    PubMed

    Beilock, Richard

    2003-06-01

    The extent to which schedules are sufficiently tight to encourage violations of Hours-of-Service Regulations, speed limits, or both was investigated through a survey of over 1,600 tractor-trailer drivers. The focus was on drivers with refrigerated trailers. The results indicate high incidence levels of tight schedules. For example, assuming average speed limits of 65 mph, 24% had violation-inducing schedules with regard to the movement they were making at the time of the interviews. Incorporating information about previous driving, the incidence of violation-inducing schedules rose to 40%. Comparison with an earlier study suggests that, despite increases in speed limits which would tend to loosen schedules, schedules have become tighter over the past decade. The implications of these findings for reforms of Hours-of-Service Regulations are briefly discussed.

  7. Job Scheduling Under the Portable Batch System

    NASA Technical Reports Server (NTRS)

    Henderson, Robert L.; Woodrow, Thomas S. (Technical Monitor)

    1995-01-01

    The typical batch queuing system schedules jobs for execution by a set of queue controls. The controls determine from which queues jobs may be selected. Within the queue, jobs are ordered first-in, first-run. This limits the set of scheduling policies available to a site. The Portable Batch System removes this limitation by providing an external scheduling module. This separate program has full knowledge of the available queued jobs, running jobs, and system resource usage. Sites are able to implement any policy expressible in one of several procedural language. Policies may range from "bet fit" to "fair share" to purely political. Scheduling decisions can be made over the full set of jobs regardless of queue or order. The scheduling policy can be changed to fit a wide variety of computing environments and scheduling goals. This is demonstrated by the use of PBS on an IBM SP-2 system at NASA Ames.

  8. Minimally disruptive schedule repair for MCM missions

    NASA Astrophysics Data System (ADS)

    Molineaux, Matthew; Auslander, Bryan; Moore, Philip G.; Gupta, Kalyan M.

    2015-05-01

    Mine countermeasures (MCM) missions entail planning and operations in very dynamic and uncertain operating environments, which pose considerable risk to personnel and equipment. Frequent schedule repairs are needed that consider the latest operating conditions to keep mission on target. Presently no decision support tools are available for the challenging task of MCM mission rescheduling. To address this capability gap, we have developed the CARPE system to assist operation planners. CARPE constantly monitors the operational environment for changes and recommends alternative repaired schedules in response. It includes a novel schedule repair algorithm called Case-Based Local Schedule Repair (CLOSR) that automatically repairs broken schedules while satisfying the requirement of minimal operational disruption. It uses a case-based approach to represent repair strategies and apply them to new situations. Evaluation of CLOSR on simulated MCM operations demonstrates the effectiveness of case-based strategy. Schedule repairs are generated rapidly, ensure the elimination of all mines, and achieve required levels of clearance.

  9. A hybrid job-shop scheduling system

    NASA Technical Reports Server (NTRS)

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

    1992-01-01

    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.

  10. Computer-assisted warehouse personnel scheduling

    NASA Astrophysics Data System (ADS)

    Parker, Sandra C.; Malstrom, Eric J.; Usmani, Tariq

    1992-02-01

    A decision support system is developed for personnel scheduling in a multiple warehouse environment. The system incorporates current manpower level, historical data of workers used, empirical load distributions, and performance standards to generate manpower requirements for a specified planning horizon. The software has been developed to be easily adaptable to varying situational details, therefore is widely applicable in different warehouse settings. The system offers personnel managers a valuable tool for evaluating alternative schedules and making intelligent decisions regarding personnel scheduling in warehouses.

  11. Intelligent perturbation algorithms to space scheduling optimization

    NASA Technical Reports Server (NTRS)

    Kurtzman, Clifford R.

    1991-01-01

    The limited availability and high cost of crew time and scarce resources make optimization of space operations critical. Advances in computer technology coupled with new iterative search techniques permit the near optimization of complex scheduling problems that were previously considered computationally intractable. Described here is a class of search techniques called Intelligent Perturbation Algorithms. Several scheduling systems which use these algorithms to optimize the scheduling of space crew, payload, and resource operations are also discussed.

  12. Reducing barriers to timely MR imaging scheduling.

    PubMed

    Wessman, Brooke V; Moriarity, Andrew K; Ametlli, Vanda; Kastan, David J

    2014-01-01

    Scheduling a magnetic resonance (MR) imaging study at the authors' large health system in 2011 required considerable preparation before an appointment time was given to a patient. Difficulties in promptly scheduling appointments resulted from the varying time required for examinations, depending on the requested protocol, availability of appropriate MR imaging equipment, examination timing, prior insurance authorization verification, and proper patient screening. These factors contributed to a backlog of patients to schedule that regularly exceeded 300. A multidisciplinary process-improvement team was assembled to improve the turnaround time for scheduling an outpatient MR imaging examination (the interval between the time when the order was received and the time when the patient was informed about the MR imaging appointment). Process improvements targeted by the team included protocol turnaround time, schedule standardization, schedule intervals, examination timing, service standards, and scheduling redesign. Using lean methods and multiple plan-do-check-act cycles, the time to schedule an outpatient MR imaging examination improved from 117 hours to 33 hours, a 72% reduction, during the 9-month study period in 2011-2012. The number of patients in the scheduling queue was reduced by 90%. Overall MR imaging examinations within the specific patient population studied increased from 773 patient studies during the first month of intervention to 1444 studies the following month and averaged over 1279 patient studies per month throughout the study.

  13. 15 CFR 700.14 - Preferential scheduling.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...) BUREAU OF INDUSTRY AND SECURITY, DEPARTMENT OF COMMERCE NATIONAL SECURITY INDUSTRIAL BASE REGULATIONS DEFENSE PRIORITIES AND ALLOCATIONS SYSTEM Industrial Priorities § 700.14 Preferential scheduling. (a)...

  14. Empowering nurses through an innovative scheduling model.

    PubMed

    Maxson-Cooper, Pamela A

    2011-03-01

    In 1980, Froedtert Hospital opened its doors using an innovative registered nurse scheduling model. The hospital has grown to 500 beds, with over 1,600 registered nurses, and continues to use the 7/70 staffing pattern as a core scheduling model. Registered nurses work a straight seven, 10-hour days, and then have 1 week off, or 26 weeks off a year. For professional registered nurses in acute care, the schedule is predictable and consistent for years. This scheduling pattern has resulted in excellent registered nurse satisfaction, increased retention, and consistency in care delivery teams since 1980.

  15. AVLIS production plant project schedule and milestones

    SciTech Connect

    Not Available

    1984-11-15

    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.

  16. Payload crew training scheduler (PACTS) user's manual

    NASA Technical Reports Server (NTRS)

    Shipman, D. L.

    1980-01-01

    The operation of the payload specialist training scheduler (PACTS) is discussed in this user's manual which is used to schedule payload specialists for mission training on the Spacelab experiments. The PACTS program is a fully automated interactive, computerized scheduling program equipped with tutorial displays. The tutorial displays are sufficiently detailed for use by a program analyst having no computer experience. The PACTS program is designed to operate on the UNIVAC 1108 computer system, and has the capability to load output into a PDP 11/45 Interactive Graphics Display System for printing schedules. The program has the capacity to handle up to three overlapping Spacelab missions.

  17. Tool for Merging Proposals Into DSN Schedules

    NASA Technical Reports Server (NTRS)

    Khanampornpan, Teerapat; Kwok, John; Call, Jared

    2008-01-01

    A Practical Extraction and Reporting Language (Perl) script called merge7da has been developed to facilitate determination, by a project scheduler in NASA's Deep Space Network, of whether a proposal for use of the DSN could create a conflict with the current DSN schedule. Prior to the development of merge7da, there was no way to quickly identify potential schedule conflicts: it was necessary to submit a proposal and wait a day or two for a response from a DSN scheduling facility. By using merge7da to detect and eliminate potential schedule conflicts before submitting a proposal, a project scheduler saves time and gains assurance that the proposal will probably be accepted. merge7da accepts two input files, one of which contains the current DSN schedule and is in a DSN-standard format called '7da'. The other input file contains the proposal and is in another DSN-standard format called 'C1/C2'. merge7da processes the two input files to produce a merged 7da-format output file that represents the DSN schedule as it would be if the proposal were to be adopted. This 7da output file can be loaded into various DSN scheduling software tools now in use.

  18. SO/ST/SRG - SCHEDULING PROGRAMS

    NASA Technical Reports Server (NTRS)

    Collazo, F. F.

    1994-01-01

    The Schedule Organizer, SO (COSMIC Program MSC-21525), Schedule Tracker, ST (COSMIC Program MSC-21526), and Report Generator, SRG (COSMIC Program MSC-21527), are programs that manipulate data base files in ways that are advantageous to scheduling applications. Originally designed for the Space Shuttle flight schedule, the program can be easily modified for other scheduling situations. Schedule Organizer provides a simple method for generating distribution lists. These distribution lists contain readers' names for each task schedule defined by the input files. Schedule Organizer contains a primary menu that is displayed at the beginning of the program. The menu provides options as follows: to write input files to an output distribution file, to change a schedule title field and/or distribution list field, to browse through the schedule and input names file for requested schedule numbers, to create an input names file and a schedule titles file, and to delete input schedule titles and associated names. SO provides a choice of two input files. One file holds 25 groups of up to 25 names for each group. The other file holds 25 records. Each 60-character-long record holds a task schedule title or it is a blank entry. SO creates three output files. One holds the formatted list of schedule titles for printout. Another file holds the formatted distribution list for printout. There is one for each input names file schedule group. The third output file holds the schedule title of the last schedule title file deleted by the user. Schedule Tracker provides an effective method for tracking tasks that are "past due" and/or "near term". ST generates reports for each responsible staff member with one or more assigned tasks that fall within the two listed categories. This enables an engineering manager to monitor tasks assigned to staff by running ST on a weekly basis. ST only lists tasks on reports that have become past due or are scheduled for recent completion (near term

  19. Environmental surveillance master sampling schedule

    SciTech Connect

    Bisping, L E

    1992-01-01

    Environmental surveillance of the Hanford Site and surrounding areas is conducted by the Pacific Northwest Laboratory (PNL) for the US Department of Energy (DOE). This document contains the planned schedule for routine sample collection for the Surface Environmental Surveillance Project (SESP) and Ground-Water Monitoring Project. Samples for radiological analyses include Air-Particulate Filter, gases and vapor; Water/Columbia River, Onsite Pond, Spring, Irrigation, and Drinking; Foodstuffs/Animal Products including Whole Milk, Poultry and Eggs, and Beef; Foodstuffs/Produce including Leafy Vegetables, Vegetables, and Fruit; Foodstuffs/Farm Products including Wine, Wheat and Alfalfa; Wildlife; Soil; Vegetation; and Sediment. Direct Radiation Measurements include Terrestrial Locations, Columbia River Shoreline Locations, and Onsite Roadway, Railway and Aerial, Radiation Surveys.

  20. CASSIUS: The Cassini Uplink Scheduler

    NASA Technical Reports Server (NTRS)

    Bellinger, Earl

    2012-01-01

    The Cassini Uplink Scheduler (CASSIUS) is cross-platform software used to generate a radiation sequence plan for commands being sent to the Cassini spacecraft. Because signals must travel through varying amounts of Earth's atmosphere, several different modes of constant telemetry rates have been devised. These modes guarantee that the spacecraft and the Deep Space Network agree with respect to the data transmission rate. However, the memory readout of a command will be lost if it occurs on a telemetry mode boundary. Given a list of spacecraft message files as well as the available telemetry modes, CASSIUS can find an uplink sequence that ensures safe transmission of each file. In addition, it can predict when the two on-board solid state recorders will swap. CASSIUS prevents data corruption by making sure that commands are not planned for memory readout during telemetry rate changes or a solid state recorder swap.

  1. Variable-ratio schedules as variable-interval schedules with linear feedback loops.

    PubMed

    McDowell, J J; Wixted, J T

    1986-11-01

    The mathematical theory of linear systems has been used successfully to describe responding on variable-interval (VI) schedules. In the simplest extension of the theory to the variable-ratio (VR) case, VR schedules are treated as if they were VI schedules with linear feedback loops. The assumption entailed by this approach, namely, that VR and VI-plus-linear-feedback schedules are equivalent, was tested by comparing responding on the two types of schedule. Four human subjects' lever pressing produced monetary reinforcers on five VR schedules, and on five VI schedules with linear feedback loops that reproduced the feedback properties of the VR schedules. Pressing was initiated by instructions in 2 subjects, and was shaped by successive approximation in the other 2. The different methods of response initiation did not have differential effects on behavior. For each of the 4 subjects, the VR and the comparable VI-plus-linear-feedback schedules generated similar average response rates and similar response patterns. The subjects' behavior on both types of schedule was similar to that of avian and rodent species on VR schedules. These results indicate that the assumption entailed by the VI-plus-linear-feedback approach to the VR case is valid and, consequently, that the approach is worth pursuing. The results also confute interresponse-time theories of schedule performance, which require interval and ratio contingencies to produce different response rates.

  2. 78 FR 26701 - Schedules of Controlled Substances: Placement of Lorcaserin Into Schedule IV

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-08

    ... scheduling responsibilities under the CSA, with the concurrence of NIDA. 50 FR 9518. In addition, because the..., ``Schedules of Controlled Substances: Placement of Lorcaserin into Schedule IV'' on December 19, 2012 (77 FR... referenced were zopiclone (70 FR 16935), pregabalin (70 FR 43633), and ezogabine (76 FR 77895). DEA...

  3. 78 FR 21818 - Schedules of Controlled Substances: Placement of Methylone Into Schedule I

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-12

    ... Secretary's scheduling responsibilities under the CSA, with the concurrence of NIDA. 50 FR 9518. In addition... provisions of the CSA. 76 FR 55616. Following this, on October 21, 2011, DEA published a Final Order in the... Schedule I of the CSA pursuant to the temporary scheduling provisions of 21 U.S.C. 811(h). 76 FR...

  4. 49 CFR Schedule D to Subpart B of... - Schedule D to Subpart B of Part 1139

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 8 2013-10-01 2013-10-01 false Schedule D to Subpart B of Part 1139 D Schedule D... REVENUE PROCEEDINGS Intercity Bus Industry Pt. 1139, Subpt. B, Sch. D Schedule D to Subpart B of Part 1139... year 19__ (c) Calendar year 19__ (d) Base year actual (e) Part I.—Selected financial data...

  5. 23 CFR 140.604 - Reimbursable schedule.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 23 Highways 1 2014-04-01 2014-04-01 false Reimbursable schedule. 140.604 Section 140.604 Highways FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PAYMENT PROCEDURES REIMBURSEMENT... Interstate funds shall be subject to a 36-month reimbursable schedule upon conversion to regular...

  6. 23 CFR 140.604 - Reimbursable schedule.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 23 Highways 1 2011-04-01 2011-04-01 false Reimbursable schedule. 140.604 Section 140.604 Highways FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PAYMENT PROCEDURES REIMBURSEMENT... Interstate funds shall be subject to a 36-month reimbursable schedule upon conversion to regular...

  7. 23 CFR 140.604 - Reimbursable schedule.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 23 Highways 1 2012-04-01 2012-04-01 false Reimbursable schedule. 140.604 Section 140.604 Highways FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PAYMENT PROCEDURES REIMBURSEMENT... Interstate funds shall be subject to a 36-month reimbursable schedule upon conversion to regular...

  8. 23 CFR 140.604 - Reimbursable schedule.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 23 Highways 1 2013-04-01 2013-04-01 false Reimbursable schedule. 140.604 Section 140.604 Highways FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PAYMENT PROCEDURES REIMBURSEMENT... Interstate funds shall be subject to a 36-month reimbursable schedule upon conversion to regular...

  9. 23 CFR 140.604 - Reimbursable schedule.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Reimbursable schedule. 140.604 Section 140.604 Highways FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PAYMENT PROCEDURES REIMBURSEMENT... Interstate funds shall be subject to a 36-month reimbursable schedule upon conversion to regular...

  10. Evolutionary Scheduler for the Deep Space Network

    NASA Technical Reports Server (NTRS)

    Guillaume, Alexandre; Lee, Seungwon; Wang, Yeou-Fang; Zheng, Hua; Chau, Savio; Tung, Yu-Wen; Terrile, Richard J.; Hovden, Robert

    2010-01-01

    A computer program assists human schedulers in satisfying, to the maximum extent possible, competing demands from multiple spacecraft missions for utilization of the transmitting/receiving Earth stations of NASA s Deep Space Network. The program embodies a concept of optimal scheduling to attain multiple objectives in the presence of multiple constraints.

  11. A Heuristic Approach to Scheduling University Timetables.

    ERIC Educational Resources Information Center

    Loo, E. H.; And Others

    1986-01-01

    Categories of facilities utilization and scheduling requirements to be considered when using a heuristic approach to timetabling are described together with a nine-step algorithm and the computerized timetabling system, Timetable Schedules System (TTS); TTS utilizes heuristic approach. An example demonstrating use of TTS and a program flowchart…

  12. 40 CFR 58.12 - Operating schedules.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...) AMBIENT AIR QUALITY SURVEILLANCE Monitoring Network § 58.12 Operating schedules. State and local... part. Area-specific PAMS operating schedules must be included as part of the PAMS network description... remains once every six days. No less frequently than as part of each 5-year network assessment, the...

  13. 16 CFR 1203.13 - Test schedule.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 16 Commercial Practices 2 2011-01-01 2011-01-01 false Test schedule. 1203.13 Section 1203.13... STANDARD FOR BICYCLE HELMETS The Standard § 1203.13 Test schedule. (a) Helmet sample 1 of the set of eight... conditioned in the ambient, high temperature, low temperature, and water immersion environments as...

  14. Religion as Schedule-Induced Behavior

    ERIC Educational Resources Information Center

    Strand, Paul S.

    2009-01-01

    In this article, I argue that a class of religious behaviors exists that is induced, for prepared organisms, by specific stimuli that are experienced according to a response-independent schedule. Like other schedule-induced behaviors, the members of this class serve as minimal units out of which functional behavior may arise. In this way, there…

  15. 40 CFR 62.2354 - Compliance schedules.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... pursuant to 40 CFR 60.21(h) would be specified at that time; this is an acceptable procedure pursuant to 40 CFR 60.24(e)(2). However, the State must submit these schedules to EPA for approval; and these schedules must meet the public hearing requirements of 40 CFR 60.23 or ones deemed equivalent by...

  16. Dishabituation Produces Interactions during Multiple Schedules

    ERIC Educational Resources Information Center

    McSweeney, Frances K.; Kowal, Benjamin P.; Murphy, Eric S.; Isava, Duane M.

    2004-01-01

    McSweeney and Weatherly (1998) argued that differential habituation to the reinforcer contributes to the behavioral interactions observed during multiple schedules. The present experiment confirmed that introducing dishabituators into one component of a multiple schedule increases response rate in the other, constant, component. During baseline,…

  17. 40 CFR 52.134 - Compliance schedules.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 3 2012-07-01 2012-07-01 false Compliance schedules. 52.134 Section 52.134 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS Arizona § 52.134 Compliance schedules. (a)...

  18. 29 CFR 1952.351 - Developmental schedule.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... (CONTINUED) APPROVED STATE PLANS FOR ENFORCEMENT OF STATE STANDARDS Arizona § 1952.351 Developmental schedule. The Arizona State plan is developmental. The following is the developmental schedule as provided by...) The formulation and approval of inter-agency agreements with the Arizona Atomic Energy Commission,...

  19. 29 CFR 1952.351 - Developmental schedule.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... (CONTINUED) APPROVED STATE PLANS FOR ENFORCEMENT OF STATE STANDARDS Arizona § 1952.351 Developmental schedule. The Arizona State plan is developmental. The following is the developmental schedule as provided by...) The formulation and approval of inter-agency agreements with the Arizona Atomic Energy Commission,...

  20. 40 CFR 52.134 - Compliance schedules.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 3 2010-07-01 2010-07-01 false Compliance schedules. 52.134 Section 52.134 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS Arizona § 52.134 Compliance schedules. (a)...

  1. 40 CFR 52.134 - Compliance schedules.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 3 2011-07-01 2011-07-01 false Compliance schedules. 52.134 Section 52.134 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS Arizona § 52.134 Compliance schedules. (a)...

  2. 40 CFR 52.134 - Compliance schedules.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 3 2014-07-01 2014-07-01 false Compliance schedules. 52.134 Section 52.134 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS Arizona § 52.134 Compliance schedules. (a)...

  3. 40 CFR 52.134 - Compliance schedules.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 3 2013-07-01 2013-07-01 false Compliance schedules. 52.134 Section 52.134 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS Arizona § 52.134 Compliance schedules. (a)...

  4. 37 CFR 2.85 - Classification schedules.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2011-07-01 2011-07-01 false Classification schedules. 2..., DEPARTMENT OF COMMERCE RULES OF PRACTICE IN TRADEMARK CASES Classification § 2.85 Classification schedules. (a) International classification system. Section 6.1 of this chapter sets forth the...

  5. 37 CFR 2.85 - Classification schedules.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2012-07-01 2012-07-01 false Classification schedules. 2..., DEPARTMENT OF COMMERCE RULES OF PRACTICE IN TRADEMARK CASES Classification § 2.85 Classification schedules. (a) International classification system. Section 6.1 of this chapter sets forth the...

  6. 37 CFR 2.85 - Classification schedules.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2014-07-01 2014-07-01 false Classification schedules. 2..., DEPARTMENT OF COMMERCE RULES OF PRACTICE IN TRADEMARK CASES Classification § 2.85 Classification schedules. (a) International classification system. Section 6.1 of this chapter sets forth the...

  7. 37 CFR 2.85 - Classification schedules.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2013-07-01 2013-07-01 false Classification schedules. 2..., DEPARTMENT OF COMMERCE RULES OF PRACTICE IN TRADEMARK CASES Classification § 2.85 Classification schedules. (a) International classification system. Section 6.1 of this chapter sets forth the...

  8. 40 CFR 62.2354 - Compliance schedules.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... schedules must meet the public hearing requirements of 40 CFR 60.23 or ones deemed equivalent by the... Florida has provided that the individual source compliance schedules would be developed and submitted by the affected sources to the State following plan adoption; and that the increments of...

  9. 76 FR 43819 - FOIA Fee Schedule Update

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-22

    ... Schedule, 76 FR 28194. In response to the notice, one comment was received regarding excessive fees. The... was published in the Federal Register and went into effect on June 15, 2010, 75 FR 39629. Board Action... SAFETY BOARD 10 CFR Part 1703 FOIA Fee Schedule Update AGENCY: Defense Nuclear Facilities Safety...

  10. 75 FR 39629 - FOIA Fee Schedule Update

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-12

    ..., 2010 the Board published for comment in the Federal Register its Proposed FOIA Fee Schedule, 75 FR... Federal Register and went into effect on May 1, 2009, 74 FR 20934. Board Action Accordingly, the Board... 1703 FOIA Fee Schedule Update AGENCY: Defense Nuclear Facilities Safety Board. ACTION: Establishment...

  11. 42 CFR 412.610 - Assessment schedule.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 42 Public Health 2 2012-10-01 2012-10-01 false Assessment schedule. 412.610 Section 412.610 Public... Hospitals and Rehabilitation Units § 412.610 Assessment schedule. (a) General. For each Medicare Part A fee... must complete a patient assessment instrument as specified in § 412.606 that covers a time period...

  12. 42 CFR 412.610 - Assessment schedule.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 42 Public Health 2 2013-10-01 2013-10-01 false Assessment schedule. 412.610 Section 412.610 Public... Hospitals and Rehabilitation Units § 412.610 Assessment schedule. (a) General. For each Medicare Part A fee... must complete a patient assessment instrument as specified in § 412.606 that covers a time period...

  13. 42 CFR 412.610 - Assessment schedule.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 2 2011-10-01 2011-10-01 false Assessment schedule. 412.610 Section 412.610 Public... Hospitals and Rehabilitation Units § 412.610 Assessment schedule. (a) General. For each Medicare Part A fee... must complete a patient assessment instrument as specified in § 412.606 that covers a time period...

  14. State Teacher Salary Schedules. Policy Analysis

    ERIC Educational Resources Information Center

    Griffith, Michael

    2016-01-01

    In the United States most teacher compensation issues are decided at the school district level. However, a group of states have chosen to play a role in teacher pay decisions by instituting statewide teacher salary schedules. Education Commission of the States has found that 17 states currently make use of teacher salary schedules. This education…

  15. Streams-C Scheduler and Library

    2001-12-04

    The scheduler accepts a preprocessed C program with optional Streams-C extensions. It translates it to a normalized form with additional information for scheduling it on a reconfigurable architecture. The resulting file is accepted by the Streams-C VHDL generator, not part of this package.

  16. Four-Day Week Schedule. Research Brief

    ERIC Educational Resources Information Center

    Marx, Gary E.

    2007-01-01

    What does research say about the four-day week as an alternative school schedule? More than 100 districts in at least 12 states currently use a four-day week alternative schedule. Most are located in rural areas, serve less than 1000 students, and made the move to a shorter school week with longer instructional days for financial reasons. Although…

  17. Incremental Scheduling Engines: Cost Savings through Automation

    NASA Technical Reports Server (NTRS)

    Jaap, John; Phillips, Shaun

    2005-01-01

    As humankind embarks on longer space missions farther from home, the requirements and environments for scheduling the activities performed on these missions are changing. As we begin to prepare for these missions it is appropriate to evaluate the merits and applicability of the different types of scheduling engines. Scheduling engines temporally arrange tasks onto a timeline so that all constraints and ob.jectives are met and resources are not over-booked. Scheduling engines used to schedule space missions fall into three general categories: batch, mixed-initiative, and incremental. This paper, presents an assessment of the engine types, a discussion of the impact of human exploration of the moon and Mars on planning and scheduling, and the applicability of the different types of scheduling engines. This paper will pursue the hypothesis that incremental scheduling engines may have a place in the new environment; they have the potential to reduce cost, to improve the satisfaction of those who execute or benefit from a particular timeline (the customers), and to allow astronauts to plan their own tasks and those of their companion robots.

  18. 11 CFR 9037.4 - Alphabetized schedules.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 11 Federal Elections 1 2011-01-01 2011-01-01 false Alphabetized schedules. 9037.4 Section 9037.4 Federal Elections FEDERAL ELECTION COMMISSION PRESIDENTIAL ELECTION CAMPAIGN FUND: PRESIDENTIAL PRIMARY... candidate file a schedule of itemized receipts, disbursements, or debts and obligations pursuant to 11...

  19. 11 CFR 9037.4 - Alphabetized schedules.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 11 Federal Elections 1 2010-01-01 2010-01-01 false Alphabetized schedules. 9037.4 Section 9037.4 Federal Elections FEDERAL ELECTION COMMISSION PRESIDENTIAL ELECTION CAMPAIGN FUND: PRESIDENTIAL PRIMARY... candidate file a schedule of itemized receipts, disbursements, or debts and obligations pursuant to 11...

  20. 29 CFR 4901.32 - Fee schedule.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... added to the search time cost. (3) Search in computerized records. Charges for information that is... schedule. (a) Charges for searching and review of records. Charges applicable under this subpart to the search for and review of records will be made according to the following fee schedule: (1) Search...

  1. How Block Scheduling Reform Effects Classroom Practice

    ERIC Educational Resources Information Center

    Veal, William R.; Flinders, David J.

    2001-01-01

    Block scheduling has become an increasingly popular reform movement for schools, school districts, and principals to enact. Much of the decision making as to whether to implement some type of block scheduling has occurred without understanding the implications this type of reform has on teachers and their classroom practices. This paper reports on…

  2. 6 CFR 27.210 - Submissions schedule.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 6 Domestic Security 1 2010-01-01 2010-01-01 false Submissions schedule. 27.210 Section 27.210 Domestic Security DEPARTMENT OF HOMELAND SECURITY, OFFICE OF THE SECRETARY CHEMICAL FACILITY ANTI-TERRORISM STANDARDS Chemical Facility Security Program § 27.210 Submissions schedule. (a) Initial Submission....

  3. 49 CFR 665.21 - Scheduling.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... TRANSPORTATION BUS TESTING Operations § 665.21 Scheduling. (a) To schedule a bus for testing, a manufacturer shall contact the operator of FTA's bus testing program. Contact information and procedures are available on the operator's bus testing Web site, http://www.altoonabustest.com. (b) Upon contacting...

  4. 49 CFR 665.21 - Scheduling.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... TRANSPORTATION BUS TESTING Operations § 665.21 Scheduling. (a) To schedule a bus for testing, a manufacturer shall contact the operator of FTA's bus testing program. Contact information and procedures are available on the operator's bus testing Web site, http://www.altoonabustest.com. (b) Upon contacting...

  5. 7 CFR 1.18 - Fee schedule.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 1 2010-01-01 2010-01-01 false Fee schedule. 1.18 Section 1.18 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Official Records § 1.18 Fee schedule. Pursuant to § 2.28 of this title, the Chief Financial Officer is delegated authority to promulgate...

  6. Improved MLWDF scheduler for LTE downlink transmission

    NASA Astrophysics Data System (ADS)

    Obinna Nnamani, Christantus; Anioke, Chidera Linda; Ikechukwu Ani, Cosmas

    2016-11-01

    In long-term evolution (LTE) downlink transmission, modified least weighted delay first (MLWDF) scheduler is a quality of service (QoS) aware scheduling scheme for real-time (RT) services. Nevertheless, MLWDF performs below optimal among the trade-off between strict delay and loss restraints of RT and non-RT traffic flows, respectively. This is further worsened with the implementation of hybrid automatic retransmission request (HARQ). As these restraints grow unabated with increasing number of user demands, the performance of MLWDF further reduces. In order to ameliorate this situation, there is a need to directly incorporate the variations in user demands and HARQ implementation as parameters to the MLWDF scheduler. In this work, an improvement to the MLWDF scheduler is proposed. The improvement entails adding two novel parameters that characterise user demand and HARQ implementation. The scheduler was tested using varying three classes of service in QoS class identifiers (QCIs) table standardised by Third Generation Partnership Project for LTE network to characterise different services. It was also tested on the basis of packet prioritisation. The proposed scheduler was simulated with LTE-SIM simulator and compared with the MLWDF and proportional fairness schedulers. In terms of delay, throughput and packet loss ratio; the proposed scheduler increased overall system performance.

  7. 5 CFR 293.511 - Retention schedule.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Retention schedule. 293.511 Section 293.511 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS PERSONNEL RECORDS Employee Medical File System Records § 293.511 Retention schedule. (a) Temporary EMFS records...

  8. 14 CFR 415.121 - Launch schedule.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... TRANSPORTATION LICENSING LAUNCH LICENSE Safety Review and Approval for Launch of an Expendable Launch Vehicle From a Non-Federal Launch Site § 415.121 Launch schedule. An applicant's safety review document must... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false Launch schedule. 415.121 Section...

  9. 14 CFR 415.121 - Launch schedule.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... TRANSPORTATION LICENSING LAUNCH LICENSE Safety Review and Approval for Launch of an Expendable Launch Vehicle From a Non-Federal Launch Site § 415.121 Launch schedule. An applicant's safety review document must... 14 Aeronautics and Space 4 2011-01-01 2011-01-01 false Launch schedule. 415.121 Section...

  10. 14 CFR 415.121 - Launch schedule.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... TRANSPORTATION LICENSING LAUNCH LICENSE Safety Review and Approval for Launch of an Expendable Launch Vehicle From a Non-Federal Launch Site § 415.121 Launch schedule. An applicant's safety review document must... 14 Aeronautics and Space 4 2013-01-01 2013-01-01 false Launch schedule. 415.121 Section...

  11. 14 CFR 415.121 - Launch schedule.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... TRANSPORTATION LICENSING LAUNCH LICENSE Safety Review and Approval for Launch of an Expendable Launch Vehicle From a Non-Federal Launch Site § 415.121 Launch schedule. An applicant's safety review document must... 14 Aeronautics and Space 4 2012-01-01 2012-01-01 false Launch schedule. 415.121 Section...

  12. 40 CFR 58.12 - Operating schedules.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...) AMBIENT AIR QUALITY SURVEILLANCE Monitoring Network § 58.12 Operating schedules. State and local... part. Area-specific PAMS operating schedules must be included as part of the PAMS network description... remains once every six days. No less frequently than as part of each 5-year network assessment, the...

  13. 7 CFR 1.18 - Fee schedule.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 1 2013-01-01 2013-01-01 false Fee schedule. 1.18 Section 1.18 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Official Records § 1.18 Fee schedule. Pursuant to § 2.28 of this title, the Chief Financial Officer is delegated authority to promulgate...

  14. 45 CFR 96.137 - Payment schedule.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 45 Public Welfare 1 2011-10-01 2011-10-01 false Payment schedule. 96.137 Section 96.137 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL ADMINISTRATION BLOCK GRANTS Substance Abuse Prevention and Treatment Block Grant § 96.137 Payment schedule. (a) The Block Grant money that may be...

  15. 45 CFR 96.137 - Payment schedule.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 45 Public Welfare 1 2012-10-01 2012-10-01 false Payment schedule. 96.137 Section 96.137 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL ADMINISTRATION BLOCK GRANTS Substance Abuse Prevention and Treatment Block Grant § 96.137 Payment schedule. (a) The Block Grant money that may be...

  16. 45 CFR 96.137 - Payment schedule.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 45 Public Welfare 1 2013-10-01 2013-10-01 false Payment schedule. 96.137 Section 96.137 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL ADMINISTRATION BLOCK GRANTS Substance Abuse Prevention and Treatment Block Grant § 96.137 Payment schedule. (a) The Block Grant money that may be...

  17. 45 CFR 96.137 - Payment schedule.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 45 Public Welfare 1 2014-10-01 2014-10-01 false Payment schedule. 96.137 Section 96.137 Public Welfare Department of Health and Human Services GENERAL ADMINISTRATION BLOCK GRANTS Substance Abuse Prevention and Treatment Block Grant § 96.137 Payment schedule. (a) The Block Grant money that may be...

  18. 45 CFR 96.137 - Payment schedule.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 45 Public Welfare 1 2010-10-01 2010-10-01 false Payment schedule. 96.137 Section 96.137 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL ADMINISTRATION BLOCK GRANTS Substance Abuse Prevention and Treatment Block Grant § 96.137 Payment schedule. (a) The Block Grant money that may be...

  19. Shaping Academic Task Engagement with Percentile Schedules

    ERIC Educational Resources Information Center

    Athens, Elizabeth S.; Vollmer, Timothy R.; St. Peter Pipkin, Claire C.

    2007-01-01

    The purpose of this study was to examine the use of percentile schedules as a method of quantifying the shaping procedure in an educational setting. We compared duration of task engagement during baseline measurements for 4 students to duration of task engagement during a percentile schedule. As a secondary purpose, we examined the influence on…

  20. 33 CFR 242.6 - Fee schedule.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... based on a Corps-wide average of estimated current costs for providing that level of service. (f) Review... most current cost data available. If necessary, the Fee Schedule will be revised after public notice... MANAGEMENT SERVICES PROGRAM ESTABLISHMENT OF FEES FOR COST RECOVERY § 242.6 Fee schedule. (a) General....

  1. Soil water monitoring equipment for irrigation scheduling

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Equipment for monitoring soil water content and sometimes bulk electrical conductivity can be used for scheduling irrigations if the accuracy of the equipment is sufficient to avoid damanging plants and wasting water and fertilizer. Irrigation scheduling is the process of deciding when to irrigate a...

  2. 37 CFR 2.85 - Classification schedules.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2010-07-01 2010-07-01 false Classification schedules. 2..., DEPARTMENT OF COMMERCE RULES OF PRACTICE IN TRADEMARK CASES Classification § 2.85 Classification schedules. (a) International classification system. Section 6.1 of this chapter sets forth the...

  3. 5 CFR 610.121 - Establishment of work schedules.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 5 Administrative Personnel 1 2011-01-01 2011-01-01 false Establishment of work schedules. 610.121... DUTY Weekly and Daily Scheduling of Work Work Schedules § 610.121 Establishment of work schedules. (a... schedule the work of his or her employees to accomplish the mission of the agency. The head of an...

  4. 5 CFR 610.121 - Establishment of work schedules.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Establishment of work schedules. 610.121... DUTY Weekly and Daily Scheduling of Work Work Schedules § 610.121 Establishment of work schedules. (a... schedule the work of his or her employees to accomplish the mission of the agency. The head of an...

  5. 5 CFR 610.121 - Establishment of work schedules.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 5 Administrative Personnel 1 2012-01-01 2012-01-01 false Establishment of work schedules. 610.121... DUTY Weekly and Daily Scheduling of Work Work Schedules § 610.121 Establishment of work schedules. (a... schedule the work of his or her employees to accomplish the mission of the agency. The head of an...

  6. 5 CFR 610.121 - Establishment of work schedules.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 5 Administrative Personnel 1 2013-01-01 2013-01-01 false Establishment of work schedules. 610.121... DUTY Weekly and Daily Scheduling of Work Work Schedules § 610.121 Establishment of work schedules. (a... schedule the work of his or her employees to accomplish the mission of the agency. The head of an...

  7. Integrated online job-shop scheduling system

    NASA Astrophysics Data System (ADS)

    Zhao, Xing; Chen, Kuan H.; Luh, Peter B.; Chiueh, T. D.; Chang, ShihChang; Thakur, Lakshman S.

    1999-11-01

    The rapid development of information technology and e- commerce requires fast response form scheduling systems. Based on the Lagrangian relaxation approach for job shop scheduling, this paper present an integrated system that will generate schedules quickly. The Lagrangian relaxation approach is an iterative optimization process, where dynamic programming is solved in each iteration. Since dynamic programming is computational expensive especially for large problems, this paper develops the simplified dynamic programming, which will cut the computation time of each iteration by one order. Furthermore, a digital circuit to be embedded in PC is designed to implement the iterative optimization algorithm, leading to another order of speed improvement. The resulting integrated scheduling system consists of the hardware for optimization and the related software. It is estimated that two orders of magnitude gain in speed can be obtained, which will make on-line scheduling for practical job shops possible.

  8. NASA Instrument Cost/Schedule Model

    NASA Technical Reports Server (NTRS)

    Habib-Agahi, Hamid; Mrozinski, Joe; Fox, George

    2011-01-01

    NASA's Office of Independent Program and Cost Evaluation (IPCE) has established a number of initiatives to improve its cost and schedule estimating capabilities. 12One of these initiatives has resulted in the JPL developed NASA Instrument Cost Model. NICM is a cost and schedule estimator that contains: A system level cost estimation tool; a subsystem level cost estimation tool; a database of cost and technical parameters of over 140 previously flown remote sensing and in-situ instruments; a schedule estimator; a set of rules to estimate cost and schedule by life cycle phases (B/C/D); and a novel tool for developing joint probability distributions for cost and schedule risk (Joint Confidence Level (JCL)). This paper describes the development and use of NICM, including the data normalization processes, data mining methods (cluster analysis, principal components analysis, regression analysis and bootstrap cross validation), the estimating equations themselves and a demonstration of the NICM tool suite.

  9. ISAPS: Intelligent Scheduling And Planning System

    SciTech Connect

    King, M.S.; Rutherford, W.C.; Grice, J.V. . Kansas City Div.); Kessel, K.L.; Orel, M. )

    1990-08-01

    ISAPS is a scheduling and planning tool for shop floor personnel working in a Flexible Manufacturing System (FMS) environment. The ISAP system has two integrated components: the Predictive Scheduler (PS) and the Reactive Scheduler (RS). These components work cooperatively to satisfy the four goals of the ISAP system, which are: (G1) meet production due dates, (G2) maximize machining center utilization, (G3) minimize cutting tool migration, and (G4) minimize product flow time. The PS is used to establish schedules for new production requirements. The RS is used to adjust the schedules produced by the PS for unforeseen events that occur during production operations. The PS and RS subsystems have been developed using IntelliCorp's Knowledge Engineering Environment (KEE), an expert system development shell, and Common LISP. Software Quality Assurance (SQA) techniques have been incorporated throughout the development effort to assure the ISAP system meets the manufacturing goals and end user requirements. 5 refs., 4 figs.

  10. Scheduling nursing personnel on a microcomputer.

    PubMed

    Liao, C J; Kao, C Y

    1997-01-01

    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

  11. Improved utilization and responsiveness with gang scheduling

    SciTech Connect

    Feitelson, D.G.,; Jette, M.A.

    1996-10-01

    Most commercial multicomputers use space-slicing schemes in which each scheduling decision has an unknown impact on the future: should a job be scheduled, risking that it will block other larger jobs later, or should the processors be left idle for now in anticipation of future arrivals? This dilemma is solved by using gang scheduling, because then the impact of each decision is limited to its time slice, and future arrivals can be accommodated in other time slices. This added flexibility is shown to improve overall system utilization and responsiveness. Empirical evidence from using gang scheduling on a Cray T3D installed at Lawrence Livermore National Lab corroborates these results, and shows conclusively that gang scheduling can be very effective with current technology. 29 refs., 10 figs., 6 tabs.

  12. Scheduling multicore workload on shared multipurpose clusters

    NASA Astrophysics Data System (ADS)

    Templon, J. A.; Acosta-Silva, C.; Flix Molina, J.; Forti, A. C.; Pérez-Calero Yzquierdo, A.; Starink, R.

    2015-12-01

    With the advent of workloads containing explicit requests for multiple cores in a single grid job, grid sites faced a new set of challenges in workload scheduling. The most common batch schedulers deployed at HEP computing sites do a poor job at multicore scheduling when using only the native capabilities of those schedulers. This paper describes how efficient multicore scheduling was achieved at the sites the authors represent, by implementing dynamically-sized multicore partitions via a minimalistic addition to the Torque/Maui batch system already in use at those sites. The paper further includes example results from use of the system in production, as well as measurements on the dependence of performance (especially the ramp-up in throughput for multicore jobs) on node size and job size.

  13. Human choice under schedules of negative reinforcement.

    PubMed

    Alessandri, Jérôme; Cançado, Carlos R X

    2015-12-01

    The generalized matching equation provides a good description of response allocation in concurrent schedules of positive reinforcement in nonhumans as well as in humans. The present experiment was conducted to further investigate the allocation of responding under concurrent schedules of negative reinforcement (i.e., timeouts from pressing a force cell) in humans. Each of three participants was exposed to different reinforcement ratios (9:1, 1:1 and 1:9) in the terminal links of a concurrent-chains schedule of negative reinforcement. The allocation of responding under this schedule was well described by the generalized matching equation, for each participant. These results replicate previous findings obtained with nonhumans and humans under concurrent schedules of positive reinforcement. In addition, they extend the results reported by Alessandri and Rivière (2013) showing that human behavior maintained by timeouts from an effortful response is sensitive to changes in relative reinforcement ratios as well as relative delays of reinforcement. PMID:26518610

  14. Human choice under schedules of negative reinforcement.

    PubMed

    Alessandri, Jérôme; Cançado, Carlos R X

    2015-12-01

    The generalized matching equation provides a good description of response allocation in concurrent schedules of positive reinforcement in nonhumans as well as in humans. The present experiment was conducted to further investigate the allocation of responding under concurrent schedules of negative reinforcement (i.e., timeouts from pressing a force cell) in humans. Each of three participants was exposed to different reinforcement ratios (9:1, 1:1 and 1:9) in the terminal links of a concurrent-chains schedule of negative reinforcement. The allocation of responding under this schedule was well described by the generalized matching equation, for each participant. These results replicate previous findings obtained with nonhumans and humans under concurrent schedules of positive reinforcement. In addition, they extend the results reported by Alessandri and Rivière (2013) showing that human behavior maintained by timeouts from an effortful response is sensitive to changes in relative reinforcement ratios as well as relative delays of reinforcement.

  15. Routine Operational Environmental Monitoring schedule, CY 1994

    SciTech Connect

    Schmidt, J.W.

    1993-12-01

    This document provides Health Physics (HP) a schedule in accordance with the Environmental Compliance Manual, WHC-CM-7-5, of monitoring and sampling routines for the Operational Environmental Monitoring (OEM) Program during calendar year (CY) 1994. The survey frequencies for particular sites are determined by the technical judgment of EES and may depend on the site history, radiological status, use, and general conditions. Additional surveys may be requested at irregular frequencies if conditions warrant. All radioactive waste sites are scheduled to be surveyed annually at a minimum. Any newly discovered waste sites not documented by this schedule will be included in the revised schedule for CY 1995. This schedule does not discuss the manpower needs nor does it list the monitoring equipment to be used in completing specific routines.

  16. Observation scheduling scheme for the Subaru telescope

    NASA Astrophysics Data System (ADS)

    Sasaki, Toshiyuki; Kosugi, George; Kawai, Jun A.; Kusumoto, Toyoaki; Koura, Norikazu; Hawkins, Robert; Kramer, Laurence; Krueger, Anthony P.; Miller, Glenn E.

    2000-06-01

    Optimization of observation sequences is a function necessary to get high efficiency and reliability of observations. We are now implementing scheduling software into the observation software system for Subaru telescope. The scheduling engine, SPIKE, developed at STScI is used with some modification for the Subaru telescope. An observation target list prepared by observers is converted to SPIKE Lisp codes. SPIKE output is inversely converted to Subaru commands to be executed with the observation software system. Real-time scheduling is planned to re-schedule observations by judging the weather and satisfaction conditions with the help of observation history. The scheduling software can be also used as support tools for observers to indicate an object good for the next observation.

  17. A simple neural network scheduler for real-time machine task scheduling

    SciTech Connect

    Gritzo, R.E.

    1991-01-01

    The recent development of a new generation of automated radionuclide assay equipment in our facility requires embedded software at each machine for the scheduling of tasks. The execution time requirements of real-time embedded software limit the complexity of the scheduler design. By representing the scheduling problem properly, a simple backpropagation neural network performs the scheduling function within the imposed requirements. Operational tests have demonstrated that the neural network scheduler has met all development goals and is superior to the previous approaches. 3 refs., 1 tab.

  18. The comparison of predictive scheduling algorithms for different sizes of job shop scheduling problems

    NASA Astrophysics Data System (ADS)

    Paprocka, I.; Kempa, W. M.; Grabowik, C.; Kalinowski, K.; Krenczyk, D.

    2016-08-01

    In the paper a survey of predictive and reactive scheduling methods is done in order to evaluate how the ability of prediction of reliability characteristics influences over robustness criteria. The most important reliability characteristics are: Mean Time to Failure, Mean Time of Repair. Survey analysis is done for a job shop scheduling problem. The paper answers the question: what method generates robust schedules in the case of a bottleneck failure occurrence before, at the beginning of planned maintenance actions or after planned maintenance actions? Efficiency of predictive schedules is evaluated using criteria: makespan, total tardiness, flow time, idle time. Efficiency of reactive schedules is evaluated using: solution robustness criterion and quality robustness criterion. This paper is the continuation of the research conducted in the paper [1], where the survey of predictive and reactive scheduling methods is done only for small size scheduling problems.

  19. [Immunization schedule in the elderly].

    PubMed

    Gavazzi, Gaëtan; Berrut, Gilles; Jeandel, Claude

    2015-09-01

    Elderly people are more likely to develop severe infections diseases. Given the significant increase in the number of the elderly population, reducing the risk of infection by vaccination is a major preventive approach. The immunization schedule for 2014 in France yields, for the first time, vaccination recommendations for patients over 65 years. Tetanus-Diphtheria-Poliomyelitis vaccination is recommended to be given at the age of 65 years and then every 10 years, together with the pertussis vaccine to protect infants less than 6 months. Recommendation for vaccinations against seasonal influenza in autumn is maintained by the High Council for Public Health, which estimates that the population benefit persists despite the lower individual effectiveness in the elderly. The pneumococcal vaccine is recommended only in high-risk populations, and only once after the age 65. Zoster vaccine is recommended between 65 and 74, and the first year of its availability, can be proposed to elderly patients between 75 and 79 years. Vaccination in the elderly must be enhanced, and information about its advantages should be disseminated. PMID:26967928

  20. Eight Days a Week: The Art of Reference Desk Scheduling.

    ERIC Educational Resources Information Center

    Stelk, Roger; Lu, Suping

    1997-01-01

    Discusses philosophical issues and human elements in reference desk scheduling for public and academic libraries, highlighting institutionalization of a desk scheduling policy, the relationship between scheduler and schedulee (impartiality, consistency, flexibility, collegiality, diplomacy, dedication to reference service), and conflict management…

  1. Observing of chain-schedule stimuli.

    PubMed

    Slezak, Jonathan M; Anderson, Karen G

    2014-06-01

    A classical-conditioning account of the processes maintaining behavior under chained schedules entails a backward transmission of conditioned-reinforcement effects. Assessing this process in traditional chain schedules is limited because the response maintained by stimulus onset accompanied by each link in a chain schedule may also be maintained by the primary reinforcer. In the present experiment, an observing response was used to measure the conditioned-reinforcing effects of stimuli associated with a three-link chain variable-time (VT) food schedule, and resistance-to-change tests (extinction and prefeeding) were implemented to examine if a backward transmission of reinforcement effects occur. Four pigeons served as subjects. Observing was maintained by the production of stimuli correlated with links of a three-link chain VT schedule with the middle-link stimulus maintaining the highest rate of observing, followed by the initial-link stimulus and the terminal-link stimulus maintaining the lowest observing rate. Results from resistance-to-change tests of extinction and prefeeding were not supportive of a backward transmission of reinforcement effects and in general, the pattern of resistance-to-change was forward. Based on past and current research, it appears that a backward pattern of relative rate decreases in responses maintained by stimuli correlated with a chain schedule due to disruption (i.e., extinction and prefeeding) is not a ubiquitous process that is evident within different chain-schedule arrangements.

  2. Mission Operations Planning and Scheduling System (MOPSS)

    NASA Technical Reports Server (NTRS)

    Wood, Terri; Hempel, Paul

    2011-01-01

    MOPSS is a generic framework that can be configured on the fly to support a wide range of planning and scheduling applications. It is currently used to support seven missions at Goddard Space Flight Center (GSFC) in roles that include science planning, mission planning, and real-time control. Prior to MOPSS, each spacecraft project built its own planning and scheduling capability to plan satellite activities and communications and to create the commands to be uplinked to the spacecraft. This approach required creating a data repository for storing planning and scheduling information, building user interfaces to display data, generating needed scheduling algorithms, and implementing customized external interfaces. Complex scheduling problems that involved reacting to multiple variable situations were analyzed manually. Operators then used the results to add commands to the schedule. Each architecture was unique to specific satellite requirements. MOPSS is an expert system that automates mission operations and frees the flight operations team to concentrate on critical activities. It is easily reconfigured by the flight operations team as the mission evolves. The heart of the system is a custom object-oriented data layer mapped onto an Oracle relational database. The combination of these two technologies allows a user or system engineer to capture any type of scheduling or planning data in the system's generic data storage via a GUI.

  3. NRC comprehensive records disposition schedule. Revision 3

    SciTech Connect

    1998-02-01

    Title 44 US Code, ``Public Printing and Documents,`` regulations issued by the General Service Administration (GSA) in 41 CFR Chapter 101, Subchapter B, ``Management and Use of Information and Records,`` and regulations issued by the National Archives and Records Administration (NARA) in 36 CFR Chapter 12, Subchapter B, ``Records Management,`` require each agency to prepare and issue a comprehensive records disposition schedule that contains the NARA approved records disposition schedules for records unique to the agency and contains the NARA`s General Records Schedules for records common to several or all agencies. The approved records disposition schedules specify the appropriate duration of retention and the final disposition for records created or maintained by the NRC. NUREG-0910, Rev. 3, contains ``NRC`s Comprehensive Records Disposition Schedule,`` and the original authorized approved citation numbers issued by NARA. Rev. 3 incorporates NARA approved changes and additions to the NRC schedules that have been implemented since the last revision dated March, 1992, reflects recent organizational changes implemented at the NRC, and includes the latest version of NARA`s General Records Schedule (dated August 1995).

  4. SHRED: a CPU scheduler for heterogeneous applications

    NASA Astrophysics Data System (ADS)

    Moonian, Oveeyen; Coulson, Geoff

    2005-03-01

    General purpose workstations must support a wide variety of application characteristics; but it is hard to find a single CPU scheduling scheme that satisfactorily schedules processes from all types of applications. It is particularly difficult to get periodic deadline-driven continuous media processes to satisfactorily co-exist with others. A number of schemes have been proposed to address this issue, but these all suffer from one or more of the following limitations: i) unacceptable inefficiency, ii) non-determinism (i.e. introducing significant burstiness or jitter), iii) inability to explicitly support deadlines (so that deadlines may be missed even when the CPU is underloaded). This paper presents "SHRED (SHaretokens, Round-robin, Earliest-deadline-first, Deferred-processing)" -an efficient, proportional-share, deterministic, scheduling scheme that enables periodic deadline-driven processes to meet their explicit deadlines wherever possible, and degrades gracefully and adaptively when this is not possible. The scheme simultaneously ensures that non-deadline processes always obtain their fair share of CPU time whether in conditions of underload or overload. For experimental evaluation, a prototype of SHRED has been developed by replacing the Linux standard scheduler with the SHRED scheduler. The prototype has been evaluated against the standard Linux scheduler for various parameters and also against two proportional-share schemes, namely Stride and VTRR scheduling, for its overhead and its effect on jitter.

  5. Observation scheduling tools for Subaru Telescope

    NASA Astrophysics Data System (ADS)

    Sasaki, Toshiyuki; Kosugi, George; Hawkins, Robert; Kawai, Jun A.; Kusumoto, Toyoaki

    2004-09-01

    Optimization of observation sequences is a function necessary to get high efficiency and reliability of observations. We have implemented scheduling software in the Subaru Telescope observatory software system. The scheduling engine, Spike, developed at STScI is used with some modification for Subaru Telescope. Since the last report at SPIE (Munich, 2000), new functions to Spike are implemented on 1) optimized arrangement of an observation dataset, which consists of a target object and related calibrations, and 2) flexible scheduling of standard stars selected out of a standard star list, which is fed to Spike as a part of observation datasets. Observation datasets with some necessary information, prepared by an observer, are input to the scheduling tools to be converted to Spike Lisp input forms. A schedule created by Spike is inversely converted to Subaru observation commands to be executed with the observation control system. These applications are operable with Web-based display. We present an overall structure of the scheduling tools with some samples of Subaru observation commands of target datasets and a resultant schedule.

  6. Schedule-Aware Workflow Management Systems

    NASA Astrophysics Data System (ADS)

    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.

  7. Optimal radiotherapy dose schedules under parametric uncertainty

    NASA Astrophysics Data System (ADS)

    Badri, Hamidreza; Watanabe, Yoichi; Leder, Kevin

    2016-01-01

    We consider the effects of parameter uncertainty on the optimal radiation schedule in the context of the linear-quadratic model. Our interest arises from the observation that if inter-patient variability in normal and tumor tissue radiosensitivity or sparing factor of the organs-at-risk (OAR) are not accounted for during radiation scheduling, the performance of the therapy may be strongly degraded or the OAR may receive a substantially larger dose than the allowable threshold. This paper proposes a stochastic radiation scheduling concept to incorporate inter-patient variability into the scheduling optimization problem. Our method is based on a probabilistic approach, where the model parameters are given by a set of random variables. Our probabilistic formulation ensures that our constraints are satisfied with a given probability, and that our objective function achieves a desired level with a stated probability. We used a variable transformation to reduce the resulting optimization problem to two dimensions. We showed that the optimal solution lies on the boundary of the feasible region and we implemented a branch and bound algorithm to find the global optimal solution. We demonstrated how the configuration of optimal schedules in the presence of uncertainty compares to optimal schedules in the absence of uncertainty (conventional schedule). We observed that in order to protect against the possibility of the model parameters falling into a region where the conventional schedule is no longer feasible, it is required to avoid extremal solutions, i.e. a single large dose or very large total dose delivered over a long period. Finally, we performed numerical experiments in the setting of head and neck tumors including several normal tissues to reveal the effect of parameter uncertainty on optimal schedules and to evaluate the sensitivity of the solutions to the choice of key model parameters.

  8. Mixed-Integer Formulations for Constellation Scheduling

    NASA Astrophysics Data System (ADS)

    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

  9. Compiling Planning into Scheduling: A Sketch

    NASA Technical Reports Server (NTRS)

    Bedrax-Weiss, Tania; Crawford, James M.; Smith, David E.

    2004-01-01

    Although there are many approaches for compiling a planning problem into a static CSP or a scheduling problem, current approaches essentially preserve the structure of the planning problem in the encoding. In this pape: we present a fundamentally different encoding that more accurately resembles a scheduling problem. We sketch the approach and argue, based on an example, that it is possible to automate the generation of such an encoding for problems with certain properties and thus produce a compiler of planning into scheduling problems. Furthermore we argue that many NASA problems exhibit these properties and that such a compiler would provide benefits to both theory and practice.

  10. Gang scheduling a parallel machine. Revision 1

    SciTech Connect

    Gorda, B.C.; Brooks, E.D. III

    1991-12-01

    Program development on parallel machines can be a nightmare of scheduling headaches. We have developed a portable time sharing mechanism to handle the problem of scheduling gangs of processes. User programs and their gangs of processes are put to sleep and awakened by the gang scheduler to provide a time sharing environment. Time quantum are adjusted according to priority queues and a system of fair share accounting. The initial platform for this software is the 128 processor BBN TC2000 in use in the Massively Parallel Computing Initiative at the Lawrence Livermore National Laboratory.

  11. Proposed Schedule for Fenton Hill Experiments

    SciTech Connect

    Albright, James N.; Brown, Donald W.

    1990-10-22

    To help in planning Fenton Hill experimental operations in concert with preparations for the Long-Term Flow Test (LTFT) next summer, the following schedule is proposed. This schedule fits some of the realities of the next few months, including the Laboratory closure during the Holidays, the seismic monitoring tests in Roswell, and the difficulties of operating during the winter months. Whenever possible, cyclic pumping operations during the colder months will be scheduled so that the pump will be on during the late evening and early morning hours to prevent freezeup.

  12. Schedule Uncertainty Control: A Literature Review

    NASA Astrophysics Data System (ADS)

    Jun-yan, Liu

    Risk control on project schedule is one of the focus problems in the academic circle and the practical area all the time. Lots of research about risk control on project schedule have been fulfilled and many achievements have appeared in recent several decades. The literature on the techniques of schedule uncertainty control was reviewed. A summary analysis on those chievements is presented such as CPM, PERT, MC, BBN, and so on and in light of that summary analysis a deep discussion in terms of advantages and disadvantages of existing research has been analyzed, so that researchers can continue to refine their research.

  13. Bridging the Gap Between Planning and Scheduling

    NASA Technical Reports Server (NTRS)

    Smith, David E.; Frank, Jeremy; Jonsson, Ari K.; Norvig, Peter (Technical Monitor)

    2000-01-01

    Planning research in Artificial Intelligence (AI) has often focused on problems where there are cascading levels of action choice and complex interactions between actions. In contrast. Scheduling research has focused on much larger problems where there is little action choice, but the resulting ordering problem is hard. In this paper, we give an overview of M planning and scheduling techniques, focusing on their similarities, differences, and limitations. We also argue that many difficult practical problems lie somewhere between planning and scheduling, and that neither area has the right set of tools for solving these vexing problems.

  14. SRG - SCHEDULE REPORT GENERATOR COMPUTER PROGRAM

    NASA Technical Reports Server (NTRS)

    Collazo, F. F.

    1994-01-01

    The Schedule Organizer, SO (COSMIC Program MSC-21525), Schedule Tracker, ST (COSMIC Program MSC-21526), and Schedule Report Generator, SRG, are programs that manipulate data base files in ways that are advantageous to scheduling applications. Originally designed for the Space Shuttle flight schedule, the program can be easily modified for other scheduling situations. Schedule Organizer provides a simple method for generating distribution lists. These distribution lists contain readers' names for each task schedule defined by the input files. Schedule Tracker provides an effective method for tracking tasks that are 'past due' and/or 'near term'. ST generates reports for each responsible staff member with one or more assigned tasks that fall within the two listed categories. This enables an engineering manager to monitor tasks assigned to staff by running ST on a weekly basis. ST only lists tasks on reports that have become past due or are schedule for recent completion (near term). Schedule Reports Generator provides a simple method for generating periodic schedule reports. SRG enables an engineering manager to monitor tasks assigned to staff members on a weekly basis. SRG sorts three types of reports using one or more data fields as sort keys. One type is sorted using the calendar year as the primary key and the end date as the secondary key. Another type is sorted by flight number. A third type of report, Waterfall plots, is also generated by SRG using the end date as the sorting key. SRG requires as input a single file or two concatenated files with up to 400 single line entries. The user constructs the input file by using the LSE editor VAX utility prior to the execution of the program. The user is able to modify the current functional description text lines just displayed. ST and SRG use the same data base file as input. The common data base file has a maximum number of 400 entries. The time span of all three programs is nineteen months. Both of these maximum

  15. Space communications scheduler: A rule-based approach to adaptive deadline scheduling

    NASA Technical Reports Server (NTRS)

    Straguzzi, Nicholas

    1990-01-01

    Job scheduling is a deceptively complex subfield of computer science. The highly combinatorial nature of the problem, which is NP-complete in nearly all cases, requires a scheduling program to intelligently transverse an immense search tree to create the best possible schedule in a minimal amount of time. In addition, the program must continually make adjustments to the initial schedule when faced with last-minute user requests, cancellations, unexpected device failures, quests, cancellations, unexpected device failures, etc. A good scheduler must be quick, flexible, and efficient, even at the expense of generating slightly less-than-optimal schedules. The Space Communication Scheduler (SCS) is an intelligent rule-based scheduling system. SCS is an adaptive deadline scheduler which allocates modular communications resources to meet an ordered set of user-specified job requests on board the NASA Space Station. SCS uses pattern matching techniques to detect potential conflicts through algorithmic and heuristic means. As a result, the system generates and maintains high density schedules without relying heavily on backtracking or blind search techniques. SCS is suitable for many common real-world applications.

  16. The Composition of the Master Schedule

    NASA Technical Reports Server (NTRS)

    Thomas, Cynthia C.; Behrend, Dirk; MacMillan, Daniel S.

    2010-01-01

    Over a period of about four months, the IVS Coordinating Center (IVSCC) each year composes the Master Schedule for the IVS observing program of the next calendar year. The process begins in early July when the IVSCC contacts the IVS Network Stations to request information about available station time as well as holiday and maintenance schedules for the upcoming year. Going through various planning stages and a review process with the IVS Observing Program Committee (OPC), the final version of the Master Schedule is posted by early November. We describe the general steps of the composition and illustrate them with the example of the planning for the Master Schedule of the 2010 observing year.

  17. Intelligent perturbation algorithms for space scheduling optimization

    NASA Technical Reports Server (NTRS)

    Kurtzman, Clifford R.

    1990-01-01

    The optimization of space operations is examined in the light of optimization heuristics for computer algorithms and iterative search techniques. Specific attention is given to the search concepts known collectively as intelligent perturbation algorithms (IPAs) and their application to crew/resource allocation problems. IPAs iteratively examine successive schedules which become progressively more efficient, and the characteristics of good perturbation operators are listed. IPAs can be applied to aerospace systems to efficiently utilize crews, payloads, and resources in the context of systems such as Space-Station scheduling. A program is presented called the MFIVE Space Station Scheduling Worksheet which generates task assignments and resource usage structures. The IPAs can be used to develop flexible manifesting and scheduling for the Industrial Space Facility.

  18. 40 CFR 52.825 - Compliance schedules.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Iowa Army Ammunition Plant (explosive contaminated waste burning) Middletown, Iowa 400—4.2(1) June 14... schedule. Editorial Note: For Federal Register citations affecting § 52.825, see the List of CFR...

  19. 40 CFR 716.60 - Reporting schedule.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... HEALTH AND SAFETY DATA REPORTING General Provisions § 716.60 Reporting schedule. (a) General requirements... Constitution Ave., NW., Washington, DC, ATTN: Section 8(d) Extension. The DCO is open from 8 a.m. to 4...

  20. 29 CFR 1952.173 - Developmental schedule.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Inspection Scheduling System will be fully implemented and in operation March 31, 1975. ... implementation of the plan and enforcement rules and regulations will be promulgated, and an operations manual...

  1. Monitoring Building Systems for Schedule Compliance

    SciTech Connect

    Jensen, Andrew M.; Belew, Shan T.

    2013-02-19

    As Pacific Northwest National Laboratory (PNNL) initiated a Core Business Hours program, it became a challenge to ensure that the hundreds of systems campus wide were operating within their programmed schedules. Therefore, a collaborative exchange between PNNL operations and PNNL researchers developing the Decision Support for Operations and Maintenance (DSOM) software package was initiated to create a tool to solve this problem. This new DSOM tool verifies systems are operating within scheduled operation times by polling Building Automation and Control Network (BACnet) identifiers of systems’ on/off or command statuses. The tool records the time spent in operation state (ON) and totalizes each system over a rolling 7-day period, highlighting systems that are running over the scheduled hours. This snapshot view allows building management to look quickly at the entire campus to ensure that systems are not operating beyond their scheduled hours.

  2. Hanford Site Environmental Surveillance Master Sampling Schedule

    SciTech Connect

    Bisping, Lynn E.

    2000-01-27

    This document contains the CY2000 schedules for the routine collection of samples for the Surface Environmental Surveillance Project (SESP) and Drinking Water Monitoring Project. Each section includes sampling locations, sample types, and analyses to be performed.

  3. Effect of Uncertainty on Deterministic Runway Scheduling

    NASA Technical Reports Server (NTRS)

    Gupta, Gautam; Malik, Waqar; Jung, Yoon C.

    2012-01-01

    Active runway scheduling involves scheduling departures for takeoffs and arrivals for runway crossing subject to numerous constraints. This paper evaluates the effect of uncertainty on a deterministic runway scheduler. The evaluation is done against a first-come- first-serve scheme. In particular, the sequence from a deterministic scheduler is frozen and the times adjusted to satisfy all separation criteria; this approach is tested against FCFS. The comparison is done for both system performance (throughput and system delay) and predictability, and varying levels of congestion are considered. The modeling of uncertainty is done in two ways: as equal uncertainty in availability at the runway as for all aircraft, and as increasing uncertainty for later aircraft. Results indicate that the deterministic approach consistently performs better than first-come-first-serve in both system performance and predictability.

  4. 46 CFR 525.2 - Terminal schedules.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ..., or storing property at the marine terminal contained in a terminal schedule must be consistent with... paragraph (b)(2) of this section, this part does not apply to bulk cargo, forest products, recycled...

  5. Job Scheduling in a Heterogeneous Grid Environment

    NASA Technical Reports Server (NTRS)

    Shan, Hong-Zhang; Smith, Warren; Oliker, Leonid; Biswas, Rupak

    2004-01-01

    Computational grids have the potential for solving large-scale scientific problems using heterogeneous and geographically distributed resources. However, a number of major technical hurdles must be overcome before this potential can be realized. One problem that is critical to effective utilization of computational grids is the efficient scheduling of jobs. This work addresses this problem by describing and evaluating a grid scheduling architecture and three job migration algorithms. The architecture is scalable and does not assume control of local site resources. The job migration policies use the availability and performance of computer systems, the network bandwidth available between systems, and the volume of input and output data associated with each job. An extensive performance comparison is presented using real workloads from leading computational centers. The results, based on several key metrics, demonstrate that the performance of our distributed migration algorithms is significantly greater than that of a local scheduling framework and comparable to a non-scalable global scheduling approach.

  6. A synthesized heuristic task scheduling algorithm.

    PubMed

    Dai, Yanyan; Zhang, Xiangli

    2014-01-01

    Aiming at the static task scheduling problems in heterogeneous environment, a heuristic task scheduling algorithm named HCPPEFT is proposed. In task prioritizing phase, there are three levels of priority in the algorithm to choose task. First, the critical tasks have the highest priority, secondly the tasks with longer path to exit task will be selected, and then algorithm will choose tasks with less predecessors to schedule. In resource selection phase, the algorithm is selected task duplication to reduce the interresource communication cost, besides forecasting the impact of an assignment for all children of the current task permits better decisions to be made in selecting resources. The algorithm proposed is compared with STDH, PEFT, and HEFT algorithms through randomly generated graphs and sets of task graphs. The experimental results show that the new algorithm can achieve better scheduling performance.

  7. Job scheduling in a heterogenous grid environment

    SciTech Connect

    Oliker, Leonid; Biswas, Rupak; Shan, Hongzhang; Smith, Warren

    2004-02-11

    Computational grids have the potential for solving large-scale scientific problems using heterogeneous and geographically distributed resources. However, a number of major technical hurdles must be overcome before this potential can be realized. One problem that is critical to effective utilization of computational grids is the efficient scheduling of jobs. This work addresses this problem by describing and evaluating a grid scheduling architecture and three job migration algorithms. The architecture is scalable and does not assume control of local site resources. The job migration policies use the availability and performance of computer systems, the network bandwidth available between systems, and the volume of input and output data associated with each job. An extensive performance comparison is presented using real workloads from leading computational centers. The results, based on several key metrics, demonstrate that the performance of our distributed migration algorithms is significantly greater than that of a local scheduling framework and comparable to a non-scalable global scheduling approach.

  8. Learning to improve iterative repair scheduling

    NASA Technical Reports Server (NTRS)

    Zweben, Monte; Davis, Eugene

    1992-01-01

    This paper presents a general learning method for dynamically selecting between repair heuristics in an iterative repair scheduling system. The system employs a version of explanation-based learning called Plausible Explanation-Based Learning (PEBL) that uses multiple examples to confirm conjectured explanations. The basic approach is to conjecture contradictions between a heuristic and statistics that measure the quality of the heuristic. When these contradictions are confirmed, a different heuristic is selected. To motivate the utility of this approach we present an empirical evaluation of the performance of a scheduling system with respect to two different repair strategies. We show that the scheduler that learns to choose between the heuristics outperforms the same scheduler with any one of two heuristics alone.

  9. 78 FR 37246 - January 2013 Pay Schedules

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-20

    ... President signed Executive Order 13641 (78 FR 21503), which documented the January 2013 pay schedules... incorporated as part of this notice. U.S. Office of Personnel Management. Elaine Kaplan, Acting...

  10. Scheduling job shop - A case study

    NASA Astrophysics Data System (ADS)

    Abas, M.; Abbas, A.; Khan, W. A.

    2016-08-01

    The scheduling in job shop is important for efficient utilization of machines in the manufacturing industry. There are number of algorithms available for scheduling of jobs which depend on machines tools, indirect consumables and jobs which are to be processed. In this paper a case study is presented for scheduling of jobs when parts are treated on available machines. Through time and motion study setup time and operation time are measured as total processing time for variety of products having different manufacturing processes. Based on due dates different level of priority are assigned to the jobs and the jobs are scheduled on the basis of priority. In view of the measured processing time, the times for processing of some new jobs are estimated and for efficient utilization of the machines available an algorithm is proposed and validated.

  11. Alternative Work Schedules Increase Employee Satisfaction.

    ERIC Educational Resources Information Center

    Turney, John R.; Cohen, Stanley L.

    1983-01-01

    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)

  12. 40 CFR 52.778 - Compliance schedules.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... requirements of § 51.262(a) of this chapter are not met since the compliance schedules for sources of nitrogen oxides extend over a period of more than 18 months and periodic increments of progress are not...

  13. NASA Deep Space Network Operations Scheduling

    NASA Astrophysics Data System (ADS)

    Enari, D. M.

    The functioning of the Deep Space Network Operations Scheduling, Jet Propulsion Laboratory, CA is reviewed. The primary objectives of the Operations Scheduling are: to schedule the worldwide global allocation of ground communications, tracking facilities, and equipment; and to provide deep space telecommunications for command, tracking, telemetry, and control in support of flight mission operations and tests. Elements of the earth set are Deep Space Stations (DSS) which provide the telecommunications link between the earth and spacecraft; NASA Communications Network; Network Data Processing Area; Network Operations Control Area which provides operational direction to the DSS; Mission Control and Computing systems; and Mission Support areas which provide flight control of the spacecraft. Elements of the space set include mission priorities and requirements which determine the spacecraft queue for allocating network resources. Scheduling is discussed in terms of long-range (3 years), mid-range (8 weeks), and short-range (2 weeks).

  14. The GBT Dynamic Scheduling System: An Update

    NASA Astrophysics Data System (ADS)

    Clark, M. H.; Balser, D. S.; Braatz, J.; Condon, J.; Creager, R. E.; McCarty, M. T.; Maddalena, R. J.; Marganian, P.; O'Neil, K.; Sessoms, E.; Shelton, A. L.

    2011-07-01

    The Robert C. Byrd Green Bank Telescope's (GBT) Dynamic Scheduling System (DSS), in production use since September 2009, was designed to maximize observing efficiency while maintaining the GBT's flexibility, improving data quality, and minimizing any undue adversity for the observers. Using observing criteria, observer availability and qualifications, three-dimensional weather forecasts, and telescope state, the DSS software is capable of optimally scheduling observers 24 to 48 hours in advance on a telescope having a wide-range of capabilities in a geographical location with variable weather patterns. Recent improvements for the GBT include an expanded frequency coverage (0.390-90 GHz), proper treatment of fully sampled array receivers, increasingly diverse observing criteria, the ability to account for atmospheric instability from clouds, and new tools for scheduling staff to control and interact with generated schedules and the underlying database.

  15. 40 CFR 52.778 - Compliance schedules.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... requirements of § 51.262(a) of this chapter are not met since the compliance schedules for sources of nitrogen oxides extend over a period of more than 18 months and periodic increments of progress are not...

  16. 40 CFR 141.702 - Sampling schedules.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 141.702 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) WATER PROGRAMS (CONTINUED) NATIONAL PRIMARY DRINKING WATER REGULATIONS Enhanced Treatment for Cryptosporidium Source Water Monitoring Requirements § 141.702 Sampling schedules. (a) Systems required to conduct source water...

  17. 40 CFR 141.702 - Sampling schedules.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 141.702 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) WATER PROGRAMS (CONTINUED) NATIONAL PRIMARY DRINKING WATER REGULATIONS Enhanced Treatment for Cryptosporidium Source Water Monitoring Requirements § 141.702 Sampling schedules. (a) Systems required to conduct source water...

  18. 40 CFR 141.702 - Sampling schedules.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 141.702 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) WATER PROGRAMS (CONTINUED) NATIONAL PRIMARY DRINKING WATER REGULATIONS Enhanced Treatment for Cryptosporidium Source Water Monitoring Requirements § 141.702 Sampling schedules. (a) Systems required to conduct source water...

  19. 40 CFR 141.702 - Sampling schedules.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 141.702 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) WATER PROGRAMS (CONTINUED) NATIONAL PRIMARY DRINKING WATER REGULATIONS Enhanced Treatment for Cryptosporidium Source Water Monitoring Requirements § 141.702 Sampling schedules. (a) Systems required to conduct source water...

  20. 40 CFR 52.778 - Compliance schedules.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... requirements of § 51.262(a) of this chapter are not met since the compliance schedules for sources of nitrogen oxides extend over a period of more than 18 months and periodic increments of progress are not...

  1. 24 CFR 965.307 - Compliance schedule.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... DEVELOPMENT PHA-OWNED OR LEASED PROJECTS-GENERAL PROVISIONS Energy Audits and Energy Conservation Measures § 965.307 Compliance schedule. All energy conservation measures determined by energy audits to be...

  2. 24 CFR 965.307 - Compliance schedule.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... DEVELOPMENT PHA-OWNED OR LEASED PROJECTS-GENERAL PROVISIONS Energy Audits and Energy Conservation Measures § 965.307 Compliance schedule. All energy conservation measures determined by energy audits to be...

  3. Knowledge-based scheduling of arrival aircraft

    NASA Technical Reports Server (NTRS)

    Krzeczowski, K.; Davis, T.; Erzberger, H.; Lev-Ram, I.; Bergh, C.

    1995-01-01

    A knowledge-based method for scheduling arrival aircraft in the terminal area has been implemented and tested in real-time simulation. The scheduling system automatically sequences, assigns landing times, and assigns runways to arrival aircraft by utilizing continuous updates of aircraft radar data and controller inputs. The scheduling algorithms is driven by a knowledge base which was obtained in over two thousand hours of controller-in-the-loop real-time simulation. The knowledge base contains a series of hierarchical 'rules' and decision logic that examines both performance criteria, such as delay reduction, as well as workload reduction criteria, such as conflict avoidance. The objective of the algorithms is to devise an efficient plan to land the aircraft in a manner acceptable to the air traffic controllers. This paper will describe the scheduling algorithms, give examples of their use, and present data regarding their potential benefits to the air traffic system.

  4. Scheduling the future NASA Space Network: Experiences with a flexible scheduling prototype

    NASA Technical Reports Server (NTRS)

    Happell, Nadine; Moe, Karen L.; Minnix, Jay

    1993-01-01

    NASA's Space Network (SN) provides telecommunications and tracking services to low earth orbiting spacecraft. One proposal for improving resource allocation and automating conflict resolution for the SN is the concept of flexible scheduling. In this concept, each Payload Operations Control Center (POCC) will possess a Space Network User POCC Interface (SNUPI) to support the development and management of flexible requests. Flexible requests express the flexibility, constraints, and repetitious nature of the user's communications requirements. Flexible scheduling is expected to improve SN resource utilization and user satisfaction, as well as reduce the effort to produce and maintain a schedule. A prototype testbed has been developed to better understand flexible scheduling as it applies to the SN. This testbed consists of a SNUPI workstation, an SN scheduler, and a flexible request language that conveys information between the two systems. All three are being evaluated by operations personnel. Benchmark testing is being conducted on the scheduler to quantify the productivity improvements achieved with flexible requests.

  5. 49 CFR 10.75 - Fee schedule.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 1 2014-10-01 2014-10-01 false Fee schedule. 10.75 Section 10.75 Transportation Office of the Secretary of Transportation MAINTENANCE OF AND ACCESS TO RECORDS PERTAINING TO INDIVIDUALS Fees § 10.75 Fee schedule. (a) Copies of documents by photocopy or similar method: Each page not larger than 11×17 inches: First page $.25...

  6. Advanced Reactors Transition Program Resource Loaded Schedule

    SciTech Connect

    GANTT, D.A.

    2000-01-12

    The Advanced Reactors Transition (ART) Resource Loaded Schedule (RLS) provides a cost and schedule baseline for managing the project elements within the ART Program. The Fast Flux Test Facility (FETF) activities are delineated through the end of FY 2000, assuming continued standby. The Nuclear Energy (NE) Legacies and Plutonium Recycle Test Reactor (PRTR) activities are delineated through the end of the deactivation process. This revision reflects the 19 Oct 1999 baseline.

  7. Coordinating, Scheduling, Processing and Analyzing IYA09

    NASA Technical Reports Server (NTRS)

    Gipson, John; Behrend, Dirk; Gordon, David; Himwich, Ed; MacMillan, Dan; Titus, Mike; Corey, Brian

    2010-01-01

    The IVS scheduled a special astrometric VLBI session for the International Year of Astronomy 2009 (IYA09) commemorating 400 years of optical astronomy and 40 years of VLBI. The IYA09 session is the most ambitious geodetic session to date in terms of network size, number of sources, and number of observations. We describe the process of designing, coordinating, scheduling, pre-session station checkout, correlating, and analyzing this session.

  8. New write-off schedules hasten paybacks

    SciTech Connect

    Weaver, M.

    1983-04-04

    Energy-conservation office-building projects eligible for the new Accelerated Cost Recovery System (ACRS) depreciation schedules can have a faster payback, according to tax analysts. To use the five-year write-off schedule, equipment must meet tests of removability and obsolescence, with decisions made on a case-by-case basis. Qualifying equipment must be classified as personal property rather than structural property. Examples include cogeneration systems, lighting fixtures, and energy-management systems. (DCK)

  9. Advanced Reactors Transition Program Resource Loaded Schedule

    SciTech Connect

    BOWEN, W.W.

    1999-11-08

    The Advanced Reactors Transition (ART) Resource Loaded Schedule (RLS) provides a cost and schedule baseline for managing the project elements within the ART Program. The Fast Flux Test Facility (FFTF) activities are delineated through the end of FY 2000, assuming continued standby. The Nuclear Energy (NE) Legacies and Plutonium Recycle Test Reactor (PRTR) activities are delineated through the end of the deactivation process. This document reflects the 1 Oct 1999 baseline.

  10. Prescribed Travel Schedules for Fatigue Management

    NASA Technical Reports Server (NTRS)

    Whitmire, Alexandra; Johnston, Smith; Lockley, Steven

    2011-01-01

    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.

  11. Chandra mission scheduling on-orbit experience

    NASA Astrophysics Data System (ADS)

    Bucher, Sabina; Williams, Brent; Pendexter, Misty; Balke, David

    2008-07-01

    Scheduling observatory time to maximize both day-to-day science target integration time and the lifetime of the observatory is a formidable challenge. Furthermore, it is not a static problem. Of course, every schedule brings a new set of observations, but the boundaries of the problem change as well. As spacecraft ages, its capabilities may degrade. As in-flight experience grows, capabilities may expand. As observing programs are completed, the needs and expectations of the science community may evolve. Changes such as these impact the rules by which a mission scheduled. In eight years on orbit, the Chandra X-Ray Observatory Mission Planning process has adapted to meet the challenge of maximizing day-to-day and mission lifetime science return, despite a consistently evolving set of scheduling constraints. The success of the planning team has been achieved, not through the use of complex algorithms and optimization routines, but through processes and home grown tools that help individuals make smart short term and long term Mission Planning decisions. This paper walks through the processes and tools used to plan and produce mission schedules for the Chandra X-Ray Observatory. Nominal planning and scheduling, target of opportunity response, and recovery from on-board autonomous safing actions are all addressed. Evolution of tools and processes, best practices, and lessons learned are highlighted along the way.

  12. Schedule-induced locomotor activity in humans.

    PubMed

    Muller, P G; Crow, R E; Cheney, C D

    1979-01-01

    In two experiments, humans received tokens either on a fixed-interval schedule for plunger pulling or various response-nondependent fixed-time schedules ranging from 16 to 140 seconds. Locomotor activity such as walking, shifting weight, or pacing was recorded in quarters of the interreinforcement interval to examine the induced characteristics of that behavior in humans. While performance was variable, several characteristics were present that have counterparts in experiments with nonhumans during periodic schedules of food reinforcement: (a) first quarter rates, and sometimes overall rates, of locomotor activity were greater during intervals that terminated in a visual stimulus and token delivery than those without: (b) overall rates of locomotor activity were greater during fixed-time 16-second schedules than during fixed-time 80- or 140-second schedules; (c) rates of locomotor activity decreased during the interreinforcement intervals; (d) locomotor activity was induced by response-dependent and response-nondependent token delivery. These results showed that the rate and temporal pattern of locomotor activity can be schedule-induced in humans. PMID:429959

  13. Stochastic Modeling of Airlines' Scheduled Services Revenue

    NASA Technical Reports Server (NTRS)

    Hamed, M. M.

    1999-01-01

    Airlines' revenue generated from scheduled services account for the major share in the total revenue. As such, predicting airlines' total scheduled services revenue is of great importance both to the governments (in case of national airlines) and private airlines. This importance stems from the need to formulate future airline strategic management policies, determine government subsidy levels, and formulate governmental air transportation policies. The prediction of the airlines' total scheduled services revenue is dealt with in this paper. Four key components of airline's scheduled services are considered. These include revenues generated from passenger, cargo, mail, and excess baggage. By addressing the revenue generated from each schedule service separately, air transportation planners and designers arc able to enhance their ability to formulate specific strategies for each component. Estimation results clearly indicate that the four stochastic processes (scheduled services components) are represented by different Box-Jenkins ARIMA models. The results demonstrate the appropriateness of the developed models and their ability to provide air transportation planners with future information vital to the planning and design processes.

  14. Stochastic Modeling of Airlines' Scheduled Services Revenue

    NASA Technical Reports Server (NTRS)

    Hamed, M. M.

    1999-01-01

    Airlines' revenue generated from scheduled services account for the major share in the total revenue. As such, predicting airlines' total scheduled services revenue is of great importance both to the governments (in case of national airlines) and private airlines. This importance stems from the need to formulate future airline strategic management policies, determine government subsidy levels, and formulate governmental air transportation policies. The prediction of the airlines' total scheduled services revenue is dealt with in this paper. Four key components of airline's scheduled services are considered. These include revenues generated from passenger, cargo, mail, and excess baggage. By addressing the revenue generated from each schedule service separately, air transportation planners and designers are able to enhance their ability to formulate specific strategies for each component. Estimation results clearly indicate that the four stochastic processes (scheduled services components) are represented by different Box-Jenkins ARIMA models. The results demonstrate the appropriateness of the developed models and their ability to provide air transportation planners with future information vital to the planning and design processes.

  15. Force dynamics in fixed-ratio schedules.

    PubMed

    Pinkston, Jonathan W; McBee, Lindsey N

    2014-03-01

    Fixed-ratio schedules are widely used in behavioral research. Although fixed-ratio schedules often conjure up relationships to work and effort, little is known about effort-related measures in these schedules. Early research had shown that force and effort of operant behavior vary systematically during the execution of ratio schedules, and the goal of the present study was to revisit early research on force dynamics in fixed-ratio schedules. Four rats earned sucrose by pressing an isometric force transducer. Presses produced sucrose after ten or twenty responses. In general, the force of responses increased then decreased systematically across the ratio. The possibility that decreases in force during ratio execution was due to a trade-off with the differential reinforcement of short inter-response times (IRT) was investigated in an additional condition where sucrose was made available according to a tandem fixed-ratio 19 inter-response (IRT)> t schedule. The tandem IRT requirement did not eliminate decreasing trends in force across the ratio; unexpectedly, the tandem requirement did eliminate increases in force early in the ratio, which may reflect sequence-level organization operating in the control of force dynamics. PMID:24315798

  16. Scheduling periodic jobs using imprecise results

    NASA Technical Reports Server (NTRS)

    Chung, Jen-Yao; Liu, Jane W. S.; Lin, Kwei-Jay

    1987-01-01

    One approach to avoid timing faults in hard, real-time systems is to make available intermediate, imprecise results produced by real-time processes. When a result of the desired quality cannot be produced in time, an imprecise result of acceptable quality produced before the deadline can be used. The problem of scheduling periodic jobs to meet deadlines on a system that provides the necessary programming language primitives and run-time support for processes to return imprecise results is discussed. Since the scheduler may choose to terminate a task before it is completed, causing it to produce an acceptable but imprecise result, the amount of processor time assigned to any task in a valid schedule can be less than the amount of time required to complete the task. A meaningful formulation of the scheduling problem must take into account the overall quality of the results. Depending on the different types of undesirable effects caused by errors, jobs are classified as type N or type C. For type N jobs, the effects of errors in results produced in different periods are not cumulative. A reasonable performance measure is the average error over all jobs. Three heuristic algorithms that lead to feasible schedules with small average errors are described. For type C jobs, the undesirable effects of errors produced in different periods are cumulative. Schedulability criteria of type C jobs are discussed.

  17. Optimal Schedules in Multitask Motor Learning.

    PubMed

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

    2016-04-01

    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

  18. Interactive Dynamic Mission Scheduling for ASCA

    NASA Astrophysics Data System (ADS)

    Antunes, A.; Nagase, F.; Isobe, T.

    The Japanese X-ray astronomy satellite ASCA (Advanced Satellite for Cosmology and Astrophysics) mission requires scheduling for each 6-month observation phase, further broken down into weekly schedules at a few minutes resolution. Two tools, SPIKE and NEEDLE, written in Lisp and C, use artificial intelligence (AI) techniques combined with a graphic user interface for fast creation and alteration of mission schedules. These programs consider viewing and satellite attitude constraints as well as observer-requested criteria and present an optimized set of solutions for review by the planner. Six-month schedules at 1 day resolution are created for an oversubscribed set of targets by the SPIKE software, originally written for HST and presently being adapted for EUVE, XTE and AXAF. The NEEDLE code creates weekly schedules at 1 min resolution using in-house orbital routines and creates output for processing by the command generation software. Schedule creation on both the long- and short-term scale is rapid, less than 1 day for long-term, and one hour for short-term.

  19. An algorithm for a single machine scheduling problem with sequence dependent setup times and scheduling windows

    NASA Technical Reports Server (NTRS)

    Moore, J. E.

    1975-01-01

    An enumeration algorithm is presented for solving a scheduling problem similar to the single machine job shop problem with sequence dependent setup times. The scheduling problem differs from the job shop problem in two ways. First, its objective is to select an optimum subset of the available tasks to be performed during a fixed period of time. Secondly, each task scheduled is constrained to occur within its particular scheduling window. The algorithm is currently being used to develop typical observational timelines for a telescope that will be operated in earth orbit. Computational times associated with timeline development are presented.

  20. Schedule Matters: Understanding the Relationship between Schedule Delays and Costs on Overruns

    NASA Technical Reports Server (NTRS)

    Majerowicz, Walt; Shinn, Stephen A.

    2016-01-01

    This paper examines the relationship between schedule delays and cost overruns on complex projects. It is generally accepted by many project practitioners that cost overruns are directly related to schedule delays. But what does "directly related to" actually mean? Some reasons or root causes for schedule delays and associated cost overruns are obvious, if only in hindsight. For example, unrealistic estimates, supply chain difficulties, insufficient schedule margin, technical problems, scope changes, or the occurrence of risk events can negatively impact schedule performance. Other factors driving schedule delays and cost overruns may be less obvious and more difficult to quantify. Examples of these less obvious factors include project complexity, flawed estimating assumptions, over-optimism, political factors, "black swan" events, or even poor leadership and communication. Indeed, is it even possible the schedule itself could be a source of delay and subsequent cost overrun? Through literature review, surveys of project practitioners, and the authors' own experience on NASA programs and projects, the authors will categorize and examine the various factors affecting the relationship between project schedule delays and cost growth. The authors will also propose some ideas for organizations to consider to help create an awareness of the factors which could cause or influence schedule delays and associated cost growth on complex projects.

  1. Enabling a New Planning and Scheduling Paradigm

    NASA Technical Reports Server (NTRS)

    Jaap, John; Davis, Elizabeth

    2004-01-01

    The Flight Projects Directorate at NASA's Marshall Space Flight Center is developing a new planning and scheduling environment and a new scheduling algorithm to enable a paradigm shift in planning and scheduling concepts. Over the past 33 years Marshall has developed and evolved a paradigm for generating payload timelines for Skylab, Spacelab, various other Shuttle payloads, and the International Space Station. The current paradigm starts by collecting the requirements, called "tasks models," from the scientists and technologists for the tasks that they want to be done. Because of shortcomings in the current modeling schema, some requirements are entered as notes. Next a cadre with knowledge of vehicle and hardware modifies these models to encompass and be compatible with the hardware model; again, notes are added when the modeling schema does not provide a better way to represent the requirements. Finally, another cadre further modifies the models to be compatible with the scheduling engine. This last cadre also submits the models to the scheduling engine or builds the timeline manually to accommodate requirements that are expressed in notes. A future paradigm would provide a scheduling engine that accepts separate science models and hardware models. The modeling schema would have the capability to represent all the requirements without resorting to notes. Furthermore, the scheduling engine would not require that the models be modified to account for the capabilities (limitations) of the scheduling engine. The enabling technology under development at Marshall has three major components. (1) A new modeling schema allows expressing all the requirements of the tasks without resorting to notes or awkward contrivances. The chosen modeling schema is both maximally expressive and easy to use. It utilizes graphics methods to show hierarchies of task constraints and networks of temporal relationships. (2) A new scheduling algorithm automatically schedules the models

  2. Routine environmental monitoring schedule, calendar year 1998

    SciTech Connect

    McKinney, S.M.

    1997-11-24

    This document provides the Environmental Restorations Contractor (ERC) and the Project Hanford Management Contractor (PHMC) a schedule in accordance with the HNF-PRO-454, Inactive Waste Sites` HNF-PRO-455, Solid Waste 3 Management4 and BHI-EE-02, Environmental Requirements, of monitoring and sampling, routines for the near-facility environmental monitoring program during calendar year (CY) 1998. Every attempt will be made to consistently follow this schedule; any deviation from this schedule will be documented by an internal memorandum (DSI) explaining the reason for the deviation. The DSI will be issued by the scheduled performing organization and directed to Environmental Monitoring and Investigations. The survey frequencies for particular sites are determined by the technical judgment of Environmental Monitoring and investigations and may depend on the site history, radiological status, use, and general conditions. Additional surveys may be requested at irregular frequencies if conditions warrant. All radioactive wastes sites are scheduled to be surveyed at least annually. Any newly discovered wastes sites not documented by this schedule will be included in the revised schedule for CY 1999. The outside perimeter road surveys of 200 East and West Area and the rail survey from the 300 Area to Columbia Center will be performed in the year 2000 per agreement with Department of Energy, Richland Field Office. This schedule does not discuss staffing needs, nor does it list the monitoring equipment to be used in completing specific routines. Personnel performing routines to meet this schedule shall communicate any need for 1332 assistance in completing these routines to Radiological Control management and Environmental Monitoring and Investigations. After each routine survey is completed, a copy of the survey record, maps, and data sheets will be forwarded to Environmental Monitoring and Investigations. These routine surveys will not be considered complete until this

  3. System/360 Computer Assisted Network Scheduling (CANS) System

    NASA Technical Reports Server (NTRS)

    Brewer, A. C.

    1972-01-01

    Computer assisted scheduling techniques that produce conflict-free and efficient schedules have been developed and implemented to meet needs of the Manned Space Flight Network. CANS system provides effective management of resources in complex scheduling environment. System is automated resource scheduling, controlling, planning, information storage and retrieval tool.

  4. 39 CFR 3020.11 - Initial Mail Classification Schedule.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 39 Postal Service 1 2014-07-01 2014-07-01 false Initial Mail Classification Schedule. 3020.11 Section 3020.11 Postal Service POSTAL REGULATORY COMMISSION PERSONNEL PRODUCT LISTS Mail Classification Schedule § 3020.11 Initial Mail Classification Schedule. The initial Mail Classification Schedule...

  5. Single-Sample Discrimination of Different Schedules' Reinforced Interresponse Times

    ERIC Educational Resources Information Center

    Tanno, Takayuki; Silberberg, Alan; Sakagami, Takayuki

    2009-01-01

    Food-deprived rats in Experiment 1 responded to one of two tandem schedules that were, with equal probability, associated with a sample lever. The tandem schedules' initial links were different random-interval schedules. Their values were adjusted to approximate equality in time to completing each tandem schedule's response requirements. The…

  6. An Examination of the Balanced School Day Schedule

    ERIC Educational Resources Information Center

    Woehrle, Trisha; Fox, Susan; Hoskin, Brenda

    2005-01-01

    Principals are always looking for effective ways to enhance the learning environment. The Balanced School Day (BSD) schedule, an alternative to the traditional schedule, reframes the school day by eliminating recess and lunch breaks and providing two scheduled nutrition breaks. Advantages and disadvantages to the schedule have been anecdotally…

  7. 40 CFR 86.115-78 - EPA dynamometer driving schedules.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 19 2014-07-01 2014-07-01 false EPA dynamometer driving schedules. 86... Complete Heavy-Duty Vehicles; Test Procedures § 86.115-78 EPA dynamometer driving schedules. (a) The driving schedules for the Urban Dynamometer Driving Schedule, US06, SC03, and the New York City Cycles...

  8. 15 CFR 30.61 - Statistical classification schedules.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 15 Commerce and Foreign Trade 1 2011-01-01 2011-01-01 false Statistical classification schedules... § 30.61 Statistical classification schedules. The following statistical classification schedules are....census.gov/trade. (a) Schedule B—Statistical Classification for Domestic and Foreign Commodities...

  9. 15 CFR 30.61 - Statistical classification schedules.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 15 Commerce and Foreign Trade 1 2014-01-01 2014-01-01 false Statistical classification schedules... § 30.61 Statistical classification schedules. The following statistical classification schedules are....census.gov/trade. (a) Schedule B—Statistical Classification for Domestic and Foreign Commodities...

  10. 15 CFR 30.61 - Statistical classification schedules.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 15 Commerce and Foreign Trade 1 2012-01-01 2012-01-01 false Statistical classification schedules... § 30.61 Statistical classification schedules. The following statistical classification schedules are....census.gov/trade. (a) Schedule B—Statistical Classification for Domestic and Foreign Commodities...

  11. 15 CFR 30.61 - Statistical classification schedules.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 15 Commerce and Foreign Trade 1 2013-01-01 2013-01-01 false Statistical classification schedules... § 30.61 Statistical classification schedules. The following statistical classification schedules are....census.gov/trade. (a) Schedule B—Statistical Classification for Domestic and Foreign Commodities...

  12. Recent reinforcement-schedule research and applied behavior analysis

    PubMed Central

    Lattal, Kennon A.; Neef, Nancy A.

    1996-01-01

    Reinforcement schedules are considered in relation to applied behavior analysis by examining several recent laboratory experiments with humans and other animals. The experiments are drawn from three areas of contemporary schedule research: behavioral history effects on schedule performance, the role of instructions in schedule performance of humans, and dynamic schedules of reinforcement. All of the experiments are discussed in relation to the role of behavioral history in current schedule performance. The paper concludes by extracting from the experiments some more general issues concerning reinforcement schedules in applied research and practice. PMID:16795888

  13. A heuristic approach to incremental and reactive scheduling

    NASA Technical Reports Server (NTRS)

    Odubiyi, Jide B.; Zoch, David R.

    1989-01-01

    An heuristic approach to incremental and reactive scheduling is described. Incremental scheduling is the process of modifying an existing schedule if the initial schedule does not meet its stated initial goals. Reactive scheduling occurs in near real-time in response to changes in available resources or the occurrence of targets of opportunity. Only minor changes are made during both incremental and reactive scheduling because a goal of re-scheduling procedures is to minimally impact the schedule. The described heuristic search techniques, which are employed by the Request Oriented Scheduling Engine (ROSE), a prototype generic scheduler, efficiently approximate the cost of reaching a goal from a given state and effective mechanisms for controlling search.

  14. A Practical Variation of a Multiple-Schedule Procedure: Brief Schedule-Correlated Stimuli

    ERIC Educational Resources Information Center

    Tiger, Jeffrey H.; Hanley, Gregory P.; Larsen, Kylie M.

    2008-01-01

    Multiple schedules using continuous discriminative stimuli have been used to minimize children's disruptive requesting for teacher attention (e.g., colored floral leis; Tiger & Hanley, 2004; Tiger, Hanley, & Heal, 2006). The present study evaluated the effectiveness of, and children's preferences for, two multiple-schedule arrangements in which…

  15. Investigations into Generalization of Constraint-Based Scheduling Theories with Applications to Space Telescope Observation Scheduling

    NASA Technical Reports Server (NTRS)

    Muscettola, Nicola; Smith, Steven S.

    1996-01-01

    This final report summarizes research performed under NASA contract NCC 2-531 toward generalization of constraint-based scheduling theories and techniques for application to space telescope observation scheduling problems. Our work into theories and techniques for solution of this class of problems has led to the development of the Heuristic Scheduling Testbed System (HSTS), a software system for integrated planning and scheduling. Within HSTS, planning and scheduling are treated as two complementary aspects of the more general process of constructing a feasible set of behaviors of a target system. We have validated the HSTS approach by applying it to the generation of observation schedules for the Hubble Space Telescope. This report summarizes the HSTS framework and its application to the Hubble Space Telescope domain. First, the HSTS software architecture is described, indicating (1) how the structure and dynamics of a system is modeled in HSTS, (2) how schedules are represented at multiple levels of abstraction, and (3) the problem solving machinery that is provided. Next, the specific scheduler developed within this software architecture for detailed management of Hubble Space Telescope operations is presented. Finally, experimental performance results are given that confirm the utility and practicality of the approach.

  16. 76 FR 77895 - Schedules of Controlled Substances: Placement of Ezogabine Into Schedule V

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-15

    ... 21, 2011 (76 FR 65424), which proposed placement of ezogabine into Schedule V of the CSA. The... substance ezogabine, including its salts, isomers, and salts of isomers whenever the existence of such salts, isomers, and salts of isomers is possible, into Schedule V of the Controlled Substances Act (CSA)....

  17. 78 FR 72013 - Schedules of Controlled Substances: Placement of Perampanel into Schedule III

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-02

    ... the CSA, with the concurrence of NIDA. 50 FR 9518, Mar. 8, 1995. In addition, because the Secretary of... Perampanel into Schedule III'' on October 22, 2013 (78 FR 62500), which proposed placement of perampanel in...) benzonitrile], including its salts, isomers, and salts of isomers, into schedule III of the...

  18. 77 FR 63766 - Schedules of Controlled Substances: Placement of Methylone Into Schedule I

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-17

    ...- methylenedioxypyrovalerone (MDPV)) into Schedule I pursuant to the temporary scheduling provisions of the CSA (76 FR 55616... FR 65371) amending 21 CFR 1308.11(g) to temporarily place these three synthetic cathinones into...-methylcathinone (methylone) including its salts, isomers, and salts of isomers whenever the existence of...

  19. 78 FR 62500 - Schedules of Controlled Substances: Placement of Perampanel into Schedule III

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-22

    ..., isomers, and salts of isomers, into Schedule III of the Controlled Substances Act (CSA). This proposed...) benzonitrile hydrate], including its salts, isomers, and salts of isomers, warrants control in Schedule III of... entities. The purpose of this proposed rule is to place perampanel, including its salts, isomers, and...

  20. Considerations for Using an Incremental Scheduler for Human Exploration Task Scheduling

    NASA Technical Reports Server (NTRS)

    Jaap, John; Phillips, Shaun

    2005-01-01

    As humankind embarks on longer space missions farther from home, the requirements and environments for scheduling the activities performed on these missions are changing. As we begin to prepare for these missions it is appropriate to evaluate the merits and applicability of the different types of scheduling engines. Scheduling engines temporally arrange tasks onto a timeline so that all constraints and objectives are met and resources are not overbooked. Scheduling engines used to schedule space missions fall into three general categories: batch, mixed-initiative, and incremental. This paper presents an assessment of the engine types, a discussion of the impact of human exploration of the moon and Mars on planning and scheduling, and the applicability of the different types of scheduling engines. This paper will pursue the hypothesis that incremental scheduling engines may have a place in the new environment; they have the potential to reduce cost, to improve the satisfaction of those who execute or benefit from a particular timeline (the customers), and to allow astronauts to plan their own tasks.

  1. Investigations into Generalization of Constraint-Based Scheduling Theories with Applications to Space Telescope Observation Scheduling

    NASA Astrophysics Data System (ADS)

    Muscettola, Nicola; Smith, Steven S.

    1996-09-01

    This final report summarizes research performed under NASA contract NCC 2-531 toward generalization of constraint-based scheduling theories and techniques for application to space telescope observation scheduling problems. Our work into theories and techniques for solution of this class of problems has led to the development of the Heuristic Scheduling Testbed System (HSTS), a software system for integrated planning and scheduling. Within HSTS, planning and scheduling are treated as two complementary aspects of the more general process of constructing a feasible set of behaviors of a target system. We have validated the HSTS approach by applying it to the generation of observation schedules for the Hubble Space Telescope. This report summarizes the HSTS framework and its application to the Hubble Space Telescope domain. First, the HSTS software architecture is described, indicating (1) how the structure and dynamics of a system is modeled in HSTS, (2) how schedules are represented at multiple levels of abstraction, and (3) the problem solving machinery that is provided. Next, the specific scheduler developed within this software architecture for detailed management of Hubble Space Telescope operations is presented. Finally, experimental performance results are given that confirm the utility and practicality of the approach.

  2. The Probability of Small Schedule Values and Preference for Random-Interval Schedules

    ERIC Educational Resources Information Center

    Soreth, Michelle Ennis; Hineline, Philip N.

    2009-01-01

    Preference for working on variable schedules and temporal discrimination were simultaneously examined in two experiments using a discrete-trial, concurrent-chains arrangement with fixed interval (FI) and random interval (RI) terminal links. The random schedule was generated by first sampling a probability distribution after the programmed delay to…

  3. Planning and Scheduling for Environmental Sensor Networks

    NASA Astrophysics Data System (ADS)

    Frank, J. D.

    2005-12-01

    Environmental Sensor Networks are a new way of monitoring the environment. They comprise autonomous sensor nodes in the environment that record real-time data, which is retrieved, analyzed, integrated with other data sets (e.g. satellite images, GIS, process models) and ultimately lead to scientific discoveries. Sensor networks must operate within time and resource constraints. Sensors have limited onboard memory, energy, computational power, communications windows and communications bandwidth. The value of data will depend on when, where and how it was collected, how detailed the data is, how long it takes to integrate the data, and how important the data was to the original scientific question. Planning and scheduling of sensor networks is necessary for effective, safe operations in the face of these constraints. For example, power bus limitations may preclude sensors from simultaneously collecting data and communicating without damaging the sensor; planners and schedulers can ensure these operations are ordered so that they do not happen simultaneously. Planning and scheduling can also ensure best use of the sensor network to maximize the value of collected science data. For example, if data is best recorded using a particular camera angle but it is costly in time and energy to achieve this, planners and schedulers can search for times when time and energy are available to achieve the optimal camera angle. Planning and scheduling can handle uncertainty in the problem specification; planners can be re-run when new information is made available, or can generate plans that include contingencies. For example, if bad weather may prevent the collection of data, a contingent plan can check lighting conditions and turn off data collection to save resources if lighting is not ideal. Both mobile and immobile sensors can benefit from planning and scheduling. For example, data collection on otherwise passive sensors can be halted to preserve limited power and memory

  4. Second-order schedules of token reinforcement with pigeons: effects of fixed- and variable-ratio exchange schedules.

    PubMed

    Foster, T A; Hackenberg, T D; Vaidya, M

    2001-09-01

    Pigeons' key pecks produced food under second-order schedules of token reinforcement, with light-emitting diodes serving as token reinforcers. In Experiment 1, tokens were earned according to a fixed-ratio 50 schedule and were exchanged for food according to either fixed-ratio or variable-ratio exchange schedules, with schedule type varied across conditions. In Experiment 2, schedule type was varied within sessions using a multiple schedule. In one component, tokens were earned according to a fixed-ratio 50 schedule and exchanged according to a variable-ratio schedule. In the other component, tokens were earned according to a variable-ratio 50 schedule and exchanged according to a fixed-ratio schedule. In both experiments, the number of responses per exchange was varied parametrically across conditions, ranging from 50 to 400 responses. Response rates decreased systematically with increases in the fixed-ratio exchange schedules, but were much less affected by changes in the variable-ratio exchange schedules. Response rates were consistently higher under variable-ratio exchange schedules than tinder comparable fixed-ratio exchange schedules, especially at higher exchange ratios. These response-rate differences were due both to greater pre-ratio pausing and to lower local rates tinder the fixed-ratio exchange schedules. Local response rates increased with proximity to food under the higher fixed-ratio exchange schedules, indicative of discriminative control by the tokens. PMID:11599637

  5. Second-order schedules of token reinforcement with pigeons: effects of fixed- and variable-ratio exchange schedules.

    PubMed Central

    Foster, T A; Hackenberg, T D; Vaidya, M

    2001-01-01

    Pigeons' key pecks produced food under second-order schedules of token reinforcement, with light-emitting diodes serving as token reinforcers. In Experiment 1, tokens were earned according to a fixed-ratio 50 schedule and were exchanged for food according to either fixed-ratio or variable-ratio exchange schedules, with schedule type varied across conditions. In Experiment 2, schedule type was varied within sessions using a multiple schedule. In one component, tokens were earned according to a fixed-ratio 50 schedule and exchanged according to a variable-ratio schedule. In the other component, tokens were earned according to a variable-ratio 50 schedule and exchanged according to a fixed-ratio schedule. In both experiments, the number of responses per exchange was varied parametrically across conditions, ranging from 50 to 400 responses. Response rates decreased systematically with increases in the fixed-ratio exchange schedules, but were much less affected by changes in the variable-ratio exchange schedules. Response rates were consistently higher under variable-ratio exchange schedules than tinder comparable fixed-ratio exchange schedules, especially at higher exchange ratios. These response-rate differences were due both to greater pre-ratio pausing and to lower local rates tinder the fixed-ratio exchange schedules. Local response rates increased with proximity to food under the higher fixed-ratio exchange schedules, indicative of discriminative control by the tokens. PMID:11599637

  6. A procedure for thinning the schedule of time-out.

    PubMed

    Donaldson, Jeanne M; Vollmer, Timothy R

    2012-01-01

    Few studies have evaluated ways to thin punishment schedules. The purpose of this study was to examine the effects of using variable ratio (VR) schedules to thin the time-out schedule gradually. Warnings were used in some conditions to assist potentially with schedule thinning, but this analysis was limited. Participants were 3 young students who engaged in problem behavior during enriched time-in periods. Dense schedules of intermittent time-out were effective at reducing problem behavior.

  7. Hybrid Scheduling Model for Independent Grid Tasks

    PubMed Central

    Shanthini, J.; Kalaikumaran, T.; Karthik, S.

    2015-01-01

    Grid computing facilitates the resource sharing through the administrative domains which are geographically distributed. Scheduling in a distributed heterogeneous environment is intrinsically very hard because of the heterogeneous nature of resource collection. Makespan and tardiness are two different measures of scheduling, and many of the previous researches concentrated much on reduction of makespan, which measures the machine utilization. In this paper, we propose a hybrid scheduling algorithm for scheduling independent grid tasks with the objective of reducing total weighted tardiness of grid tasks. Tardiness is to measure the due date performance, which has a direct impact on cost for executing the jobs. In this paper we propose BG_ATC algorithm which is a combination of best gap (BG) search and Apparent Tardiness Cost (ATC) indexing algorithm. Furthermore, we implemented these two algorithms in two different phases of the scheduling process. In addition to that, the comparison was made on results with various benchmark algorithms and the experimental results show that our algorithm outperforms the benchmark algorithms. PMID:26543897

  8. Hybrid Scheduling Model for Independent Grid Tasks.

    PubMed

    Shanthini, J; Kalaikumaran, T; Karthik, S

    2015-01-01

    Grid computing facilitates the resource sharing through the administrative domains which are geographically distributed. Scheduling in a distributed heterogeneous environment is intrinsically very hard because of the heterogeneous nature of resource collection. Makespan and tardiness are two different measures of scheduling, and many of the previous researches concentrated much on reduction of makespan, which measures the machine utilization. In this paper, we propose a hybrid scheduling algorithm for scheduling independent grid tasks with the objective of reducing total weighted tardiness of grid tasks. Tardiness is to measure the due date performance, which has a direct impact on cost for executing the jobs. In this paper we propose BG_ATC algorithm which is a combination of best gap (BG) search and Apparent Tardiness Cost (ATC) indexing algorithm. Furthermore, we implemented these two algorithms in two different phases of the scheduling process. In addition to that, the comparison was made on results with various benchmark algorithms and the experimental results show that our algorithm outperforms the benchmark algorithms. PMID:26543897

  9. A flexible nurse scheduling support system.

    PubMed

    Ozkarahan, I

    1989-01-01

    Salaries paid to nursing personnel constitute the largest chunk of a hospital's budget. Therefore, this human resource must be utilized efficiently. Hospitals provide continuous service without the exception of holidays and personal preferences. This causes the nurses' discontent in shift scheduling. And the consequence of this discontent is the nurse shortage. This and the pressures on hospitals to limit costs increase the importance of the nurse scheduling problem. Scheduling nursing personnel in hospitals is very complex due to the variety of conflicting interests or objectives between hospitals and nurses. Also, the demand, which varies widely 24-h 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 flexible work patterns as it integrates time of the day (TOD) and day of the week (DOW) scheduling problems. PMID:2582748

  10. Hybrid Scheduling Model for Independent Grid Tasks.

    PubMed

    Shanthini, J; Kalaikumaran, T; Karthik, S

    2015-01-01

    Grid computing facilitates the resource sharing through the administrative domains which are geographically distributed. Scheduling in a distributed heterogeneous environment is intrinsically very hard because of the heterogeneous nature of resource collection. Makespan and tardiness are two different measures of scheduling, and many of the previous researches concentrated much on reduction of makespan, which measures the machine utilization. In this paper, we propose a hybrid scheduling algorithm for scheduling independent grid tasks with the objective of reducing total weighted tardiness of grid tasks. Tardiness is to measure the due date performance, which has a direct impact on cost for executing the jobs. In this paper we propose BG_ATC algorithm which is a combination of best gap (BG) search and Apparent Tardiness Cost (ATC) indexing algorithm. Furthermore, we implemented these two algorithms in two different phases of the scheduling process. In addition to that, the comparison was made on results with various benchmark algorithms and the experimental results show that our algorithm outperforms the benchmark algorithms.

  11. Scheduling Future Water Supply Investments Under Uncertainty

    NASA Astrophysics Data System (ADS)

    Huskova, I.; Matrosov, E. S.; Harou, J. J.; Kasprzyk, J. R.; Reed, P. M.

    2014-12-01

    Uncertain hydrological impacts of climate change, population growth and institutional changes pose a major challenge to planning of water supply systems. Planners seek optimal portfolios of supply and demand management schemes but also when to activate assets whilst considering many system goals and plausible futures. Incorporation of scheduling into the planning under uncertainty problem strongly increases its complexity. We investigate some approaches to scheduling with many-objective heuristic search. We apply a multi-scenario many-objective scheduling approach to the Thames River basin water supply system planning problem in the UK. Decisions include which new supply and demand schemes to implement, at what capacity and when. The impact of different system uncertainties on scheme implementation schedules are explored, i.e. how the choice of future scenarios affects the search process and its outcomes. The activation of schemes is influenced by the occurrence of extreme hydrological events in the ensemble of plausible scenarios and other factors. The approach and results are compared with a previous study where only the portfolio problem is addressed (without scheduling).

  12. Quay crane scheduling with dual cycling

    NASA Astrophysics Data System (ADS)

    Wang, Dandan; Li, Xiaoping

    2015-10-01

    In this article, the dual cycling quay crane scheduling problem (D-QCSP) with hatches is addressed to minimize the operation cycles of quay cranes. The problem is decomposed into two sub-problems: the intra-group stage (sequencing stacks within each hatch) and the inter-group stage (scheduling all hatches). A new stack sequencing method is constructed for stacks of each hatch, which is modelled as a two-machine non-permutation flow shop scheduling problem. By removing inner gaps using left-shifting, the adapted hatch scheduling sub-problem is modelled as a two-machine grouped flow shop scheduling problem, which contains more precise processing times. A composite heuristic is proposed for the D-QCSP. Based on the derived lower bound, the heuristic is compared with the best existing heuristics on a large number of instances. Experimental results illustrate that the proposal outperforms the existing methods on all instances and dual cycling needs many fewer quay crane operating cycles than single cycling.

  13. Integrated network design and scheduling problems :

    SciTech Connect

    Nurre, Sarah G.; Carlson, Jeffrey J.

    2014-01-01

    We consider the class of integrated network design and scheduling problems. These problems focus on selecting and scheduling operations that will change the characteristics of a network, while being speci cally concerned with the performance of the network over time. Motivating applications of INDS problems include infrastructure restoration after extreme events and building humanitarian distribution supply chains. While similar models have been proposed, no one has performed an extensive review of INDS problems from their complexity, network and scheduling characteristics, information, and solution methods. We examine INDS problems under a parallel identical machine scheduling environment where the performance of the network is evaluated by solving classic network optimization problems. We classify that all considered INDS problems as NP-Hard and propose a novel heuristic dispatching rule algorithm that selects and schedules sets of arcs based on their interactions in the network. We present computational analysis based on realistic data sets representing the infrastructures of coastal New Hanover County, North Carolina, lower Manhattan, New York, and a realistic arti cial community CLARC County. These tests demonstrate the importance of a dispatching rule to arrive at near-optimal solutions during real-time decision making activities. We extend INDS problems to incorporate release dates which represent the earliest an operation can be performed and exible release dates through the introduction of specialized machine(s) that can perform work to move the release date earlier in time. An online optimization setting is explored where the release date of a component is not known.

  14. Dispatch Scheduling to Maximize Exoplanet Detection

    NASA Astrophysics Data System (ADS)

    Johnson, Samson; McCrady, Nate; MINERVA

    2016-01-01

    MINERVA is a dedicated exoplanet detection telescope array using radial velocity measurements of nearby stars to detect planets. MINERVA will be a completely robotic facility, with a goal of maximizing the number of exoplanets detected. MINERVA requires a unique application of queue scheduling due to its automated nature and the requirement of high cadence observations. A dispatch scheduling algorithm is employed to create a dynamic and flexible selector of targets to observe, in which stars are chosen by assigning values through a weighting function. I designed and have begun testing a simulation which implements the functions of a dispatch scheduler and records observations based on target selections through the same principles that will be used at the commissioned site. These results will be used in a larger simulation that incorporates weather, planet occurrence statistics, and stellar noise to test the planet detection capabilities of MINERVA. This will be used to heuristically determine an optimal observing strategy for the MINERVA project.

  15. Maglev guideway cost and construction schedule assessment

    SciTech Connect

    Plotkin, D.; Kim, S.

    1997-05-01

    A summary of construction cost and scheduling information is presented for four maglev guideway designs on an example route from Baltimore, MD to Newark, NJ. This work results from the National Maglev Initiative (NMI), a government-industry effort from 1989 to 1994. The system design concepts used as a basis for developing cost and construction scheduling information, were submitted by four industry consortia solely for this analysis, and represent their own unpublished designs. The detailed cost and construction schedule analyses cover the main guideway only. A summary estimate was made for stations, power distribution systems, maintenance facilities, and other types of infrastructure. The results of the analyses indicate a number of design aspects which must receive further consideration by future designers. These aspects will affect the practical and economic construction and long-term maintenance of a high-speed maglev guideway.

  16. CRI planning and scheduling for space

    NASA Technical Reports Server (NTRS)

    Aarup, Mads

    1994-01-01

    Computer Resources International (CRI) has many years of experience in developing space planning and scheduling systems for the European Space Agency. Activities range from AIT/AIV planning over mission planning to research in on-board autonomy using advanced planning and scheduling technologies in conjunction with model based diagnostics. This article presents four projects carried out for ESA by CRI with various subcontractors: (1) DI, Distributed Intelligence for Ground/Space Systems is an on-going research project; (2) GMPT, Generic Mission Planning Toolset, a feasibility study concluded in 1993; (3) OPTIMUM-AIV, Open Planning Tool for AIV, development of a knowledge based AIV planning and scheduling tool ended in 1992; and (4) PlanERS-1, development of an AI and knowledge-based mission planning prototype for the ERS-1 earth observation spacecraft ended in 1991.

  17. Religion as Schedule-Induced Behavior

    PubMed Central

    Strand, Paul S

    2009-01-01

    In this article, I argue that a class of religious behaviors exists that is induced, for prepared organisms, by specific stimuli that are experienced according to a response-independent schedule. Like other schedule-induced behaviors, the members of this class serve as minimal units out of which functional behavior may arise. In this way, there exist two classes of religious behavior: nonoperant schedule-induced behaviors and operant behaviors. This dichotomy is consistent with the distinction insisted upon by religious scholars and philosophers between “graceful” and “effortful” religious behaviors. Embracing the distinction allows an explanation of many aspects of religious experience and behavior that have been overlooked or disregarded by other scientific approaches to religion. PMID:22478521

  18. What is a "schedule of reinforcement"?

    PubMed

    Schoenfeld, W N; Cole, B K

    1975-01-01

    Several ambiguities in the present terminology of behavior theory obscure some important theoretical assumptions and experimental details in current research. Left unclarified, such ambiguities impede the accurate analysis of laboratory procedures, and prevent reliable communication among researchers. This paper focuses on the term "schedule of reinforcement". It points out that two distinguishable operational rules are implicated in the term: in the case where reinforcement is of the so-called response contingent type, the "schedule" is really a rule to identify the response to be reinforced; in the case of non-contingent reinforcement, the "schedule" is truly a rule for delivery of reinforcement. Other terminological ambiguities that are encountered in a discussion of this term include "reinforcement" and "intermittency." A resolution of these problems will necessarily involve the procedures of non-contingent reinforcement, and the parameter of reinforcement probability.

  19. A progressive-duration schedule of reinforcement.

    PubMed

    Gulotta, Kara B; Byrne, Tom

    2015-12-01

    We describe a schedule of reinforcement involving systematic, within-session increases in response-duration requirements. Rats received access to appetitive reinforcers for depressing and holding down a response lever. Duration requirements increased after each reinforcer delivery. Sessions ended when reinforcement criteria were unmet for a period of ten minutes. Breaking points, defined as the terminal duration requirement in effect prior to the end of the session, stabilized when environmental conditions were held constant. Breaking points were sensitive to manipulations of both food deprivation and reinforcer quality. Analogous to progressive-ratio schedules, progressive-duration schedules may provide an assay for measuring the amount of behavior an organism will emit for a given reinforcer under current motivational conditions.

  20. Distributed job scheduling in MetaCentrum

    NASA Astrophysics Data System (ADS)

    Tóth, Šimon; Ruda, Miroslav

    2015-05-01

    MetaCentrum - The Czech National Grid provides access to various resources across the Czech Republic. The utilized resource management and scheduling system is based on a heavily modified version of the Torque Batch System. This open source resource manager is maintained in a local fork and was extended to facilitate the requirements of such a large installation. This paper provides an overview of unique features deployed in MetaCentrum. Notably, we describe our distributed setup that encompasses several standalone independent servers while still maintaining full cooperative scheduling across the grid. We also present the benefits of our virtualized infrastructure that enables our schedulers to dynamically request ondemand virtual machines, that are then used to facilitate the varied requirements of users in our system, as well as enabling support for user requested virtual clusters that can be further interconnected using a private VLAN.

  1. Experiments with a decision-theoretic scheduler

    NASA Technical Reports Server (NTRS)

    Hansson, Othar; Holt, Gerhard; Mayer, Andrew

    1992-01-01

    This paper describes DTS, a decision-theoretic scheduler designed to employ state-of-the-art probabilistic inference technology to speed the search for efficient solutions to constraint-satisfaction problems. Our approach involves assessing the performance of heuristic control strategies that are normally hard-coded into scheduling systems, and using probabilistic inference to aggregate this information in light of features of a given problem. BPS, the Bayesian Problem-Solver, introduced a similar approach to solving single-agent and adversarial graph search problems, yielding orders-of-magnitude improvement over traditional techniques. Initial efforts suggest that similar improvements will be realizable when applied to typical constraint-satisfaction scheduling problems.

  2. Scheduling Earth Observing Satellites with Evolutionary Algorithms

    NASA Technical Reports Server (NTRS)

    Globus, Al; Crawford, James; Lohn, Jason; Pryor, Anna

    2003-01-01

    We hypothesize that evolutionary algorithms can effectively schedule coordinated fleets of Earth observing satellites. The constraints are complex and the bottlenecks are not well understood, a condition where evolutionary algorithms are often effective. This is, in part, because evolutionary algorithms require only that one can represent solutions, modify solutions, and evaluate solution fitness. To test the hypothesis we have developed a representative set of problems, produced optimization software (in Java) to solve them, and run experiments comparing techniques. This paper presents initial results of a comparison of several evolutionary and other optimization techniques; namely the genetic algorithm, simulated annealing, squeaky wheel optimization, and stochastic hill climbing. We also compare separate satellite vs. integrated scheduling of a two satellite constellation. While the results are not definitive, tests to date suggest that simulated annealing is the best search technique and integrated scheduling is superior.

  3. Expert system for scheduling simulation lab sessions

    NASA Technical Reports Server (NTRS)

    Lund, Chet

    1990-01-01

    Implementation and results of an expert system used for scheduling session requests for the Systems Engineering Simulator (SES) laboratory at the NASA Johnson Space Center (JSC) are discussed. Weekly session requests are received from astronaut crew trainers, procedures developers, engineering assessment personnel, software developers, and various others who wish to access the computers, scene generators, and other simulation equipment available to them in the SES lab. The expert system under discussion is comprised of a data acquisition portion - two Pascal programs run on a personal computer - and a CLIPS program installed on a minicomputer. A brief introduction to the SES lab and its scheduling background is given. A general overview of the system is provided, followed by a detailed description of the constraint-reduction process and of the scheduler itself. Results from a ten-week trial period using this approach are discussed. Finally, a summary of the expert system's strengths and shortcomings are provided.

  4. Fault-tolerant dynamic task graph scheduling

    SciTech Connect

    Kurt, Mehmet C.; Krishnamoorthy, Sriram; Agrawal, Kunal; Agrawal, Gagan

    2014-11-16

    In this paper, we present an approach to fault tolerant execution of dynamic task graphs scheduled using work stealing. In particular, we focus on selective and localized recovery of tasks in the presence of soft faults. We elicit from the user the basic task graph structure in terms of successor and predecessor relationships. The work stealing-based algorithm to schedule such a task graph is augmented to enable recovery when the data and meta-data associated with a task get corrupted. We use this redundancy, and the knowledge of the task graph structure, to selectively recover from faults with low space and time overheads. We show that the fault tolerant design retains the essential properties of the underlying work stealing-based task scheduling algorithm, and that the fault tolerant execution is asymptotically optimal when task re-execution is taken into account. Experimental evaluation demonstrates the low cost of recovery under various fault scenarios.

  5. S-CHART - SCHEDULING CHART PROGRAM

    NASA Technical Reports Server (NTRS)

    Klinkner, E. R.

    1994-01-01

    The Scheduling Chart Program (S-Chart) uses simple menu choices to produce high quality Gantt type scheduling and production time-line charts with minimal data entry requirements. The software produces high quality charts (20, 40, and 80 day options) in 10-20 minutes including start up, data entry, and printing. Reprints take less than one minute. Some of the more significant features are as follows: speed and ease of use with menu driven selections from start to finish, storage and catalogs of all data sets for rapid access and manipulation, compact program size to permit storage of dozens of data sets on the program disc, and creation of ASCII text files of graphs for rapid printing. The final product of the plot routine is an extended ASCII character file which shows the events scheduled and actual work dates. This file may be printed from the program, from DOS, or imported to a word processor for customizing. S-Chart is not intended to take the place of commercial scheduling/project management software. However, it is a simple, somewhat limited Gantt chart plotter and scheduling tracking program with an emphasis on straightforward data entry. There is no complex relationship building between the scheduled events. Dates are entered as dates, not as algebraic functions. All the files of S-Chart, except for the graph picture and the stand-alone executable, were written in 100% dBASE III compatible code. The executable code was created with CLIPPER and the graph picture files are written in ASCII code. S-Chart was implemented on an IBM PC series machine under DOS and requires 215k bytes of memory. The program was developed in 1988.

  6. Research on schedulers for astronomical observatories

    NASA Astrophysics Data System (ADS)

    Colome, Josep; Colomer, Pau; Guàrdia, Josep; Ribas, Ignasi; Campreciós, Jordi; Coiffard, Thierry; Gesa, Lluis; Martínez, Francesc; Rodler, Florian

    2012-09-01

    The main task of a scheduler applied to astronomical observatories is the time optimization of the facility and the maximization of the scientific return. Scheduling of astronomical observations is an example of the classical task allocation problem known as the job-shop problem (JSP), where N ideal tasks are assigned to M identical resources, while minimizing the total execution time. A problem of higher complexity, called the Flexible-JSP (FJSP), arises when the tasks can be executed by different resources, i.e. by different telescopes, and it focuses on determining a routing policy (i.e., which machine to assign for each operation) other than the traditional scheduling decisions (i.e., to determine the starting time of each operation). In most cases there is no single best approach to solve the planning system and, therefore, various mathematical algorithms (Genetic Algorithms, Ant Colony Optimization algorithms, Multi-Objective Evolutionary algorithms, etc.) are usually considered to adapt the application to the system configuration and task execution constraints. The scheduling time-cycle is also an important ingredient to determine the best approach. A shortterm scheduler, for instance, has to find a good solution with the minimum computation time, providing the system with the capability to adapt the selected task to varying execution constraints (i.e., environment conditions). We present in this contribution an analysis of the task allocation problem and the solutions currently in use at different astronomical facilities. We also describe the schedulers for three different projects (CTA, CARMENES and TJO) where the conclusions of this analysis are applied to develop a suitable routine.

  7. Scheduling Operations for Massive Heterogeneous Clusters

    NASA Technical Reports Server (NTRS)

    Humphrey, John; Spagnoli, Kyle

    2013-01-01

    High-performance computing (HPC) programming has become increasingly difficult with the advent of hybrid supercomputers consisting of multicore CPUs and accelerator boards such as the GPU. Manual tuning of software to achieve high performance on this type of machine has been performed by programmers. This is needlessly difficult and prone to being invalidated by new hardware, new software, or changes in the underlying code. A system was developed for task-based representation of programs, which when coupled with a scheduler and runtime system, allows for many benefits, including higher performance and utilization of computational resources, easier programming and porting, and adaptations of code during runtime. The system consists of a method of representing computer algorithms as a series of data-dependent tasks. The series forms a graph, which can be scheduled for execution on many nodes of a supercomputer efficiently by a computer algorithm. The schedule is executed by a dispatch component, which is tailored to understand all of the hardware types that may be available within the system. The scheduler is informed by a cluster mapping tool, which generates a topology of available resources and their strengths and communication costs. Software is decoupled from its hardware, which aids in porting to future architectures. A computer algorithm schedules all operations, which for systems of high complexity (i.e., most NASA codes), cannot be performed optimally by a human. The system aids in reducing repetitive code, such as communication code, and aids in the reduction of redundant code across projects. It adds new features to code automatically, such as recovering from a lost node or the ability to modify the code while running. In this project, the innovators at the time of this reporting intend to develop two distinct technologies that build upon each other and both of which serve as building blocks for more efficient HPC usage. First is the scheduling and dynamic

  8. Expanding symmetric multiprocessor capability through gang scheduling

    SciTech Connect

    Jette, M.A.

    1998-03-01

    Symmetric Multiprocessor (SMP) systems normally provide both space- sharing and time-sharing to insure high system utilization and good responsiveness. However the prevailing lack of concurrent scheduling for parallel programs precludes SMP use in addressing many large-scale problems. Tightly synchronized communications are impractical and normal time-sharing reduces the benefit of cache memory. Evidence gathered at Lawrence Livermore National Laboratory (LLNL) indicates that gang scheduling can increase the capability of SMP systems and parallel program performance without adverse impact upon system utilization or responsiveness.

  9. Standardizing criteria for scheduling elective labor inductions.

    PubMed

    Durham, Laurel; Veltman, Larry; Davis, Peggy; Ferguson, Linda; Hacker, Margaret; Hooker, Debra; Larison, Kristine; Pribyl, Jennifer; Twilleager, Karen; Van Hout, Gretchen

    2008-01-01

    Induction of labor has become routine practice in perinatal units across the United States, with rates reaching a high of 21.2% of births in 2003-2004. This article describes the process our institution used to standardize the criteria for scheduling inductions. Specifically, we aimed to increase the consistency in practice for scheduling and performing elective inductions, including mandating gestational age of 39 completed weeks, ensuring cervical ripeness, and disallowing the use of cervical ripening agents. The nurses' participation, from planning to implementation, was critical in the success of this evidence-based practice change.

  10. Scheduling Projects with Multiskill Learning Effect

    PubMed Central

    2014-01-01

    We investigate the project scheduling problem with multiskill learning effect. A new model is proposed to deal with the problem, where both autonomous and induced learning are considered. In order to obtain the optimal solution, a genetic algorithm with specific encoding and decoding schemes is introduced. A numerical example is used to illustrate the proposed model. The computational results show that the learning effect cannot be neglected in project scheduling. By means of determining the level of induced learning, the project manager can balance the project makespan with total cost. PMID:24683355

  11. Autonomous scheduling technology for Earth orbital missions

    NASA Technical Reports Server (NTRS)

    Srivastava, S.

    1982-01-01

    The development of a dynamic autonomous system (DYASS) of resources for the mission support of near-Earth NASA spacecraft is discussed and the current NASA space data system is described from a functional perspective. The future (late 80's and early 90's) NASA space data system is discussed. The DYASS concept, the autonomous process control, and the NASA space data system are introduced. Scheduling and related disciplines are surveyed. DYASS as a scheduling problem is also discussed. Artificial intelligence and knowledge representation is considered as well as the NUDGE system and the I-Space system.

  12. Temporal planning for transportation planning and scheduling

    NASA Technical Reports Server (NTRS)

    Frederking, Robert E.; Muscettola, Nicola

    1992-01-01

    In this paper we describe preliminary work done in the CORTES project, applying the Heuristic Scheduling Testbed System (HSTS) to a transportation planning and scheduling domain. First, we describe in more detail the transportation problems that we are addressing. We then describe the fundamental characteristics of HSTS and we concentrate on the representation of multiple capacity resources. We continue with a more detailed description of the transportation planning problem that we have initially addressed in HSTS and of its solution. Finally we describe future directions for our research.

  13. Planning, scheduling, and control for automatic telescopes

    NASA Technical Reports Server (NTRS)

    Drummond, Mark; Swanson, Keith; Philips, Andy; Levinson, Rich; Bresina, John

    1992-01-01

    This paper presents an argument for the appropriateness of Entropy Reduction Engine (ERE) technology to the planning, scheduling, and control components of Automatic Photoelectric Telescope (APT) management. The paper is organized as follows. In the next section, we give a brief summary of the planning and scheduling requirements for APTs. Following this, in section 3, we give an ERE project precis, couched primarily in terms of project objectives. Section 4 gives a sketch of the match-up between problem and technology, and section 5 outlines where we want to go with this work.

  14. Scheduling and rescheduling with iterative repair

    NASA Technical Reports Server (NTRS)

    Zweben, Monte; Davis, Eugene; Daun, Brian; Deale, Michael

    1992-01-01

    This paper describes the GERRY scheduling and rescheduling system being applied to coordinate Space Shuttle Ground Processing. The system uses constraint-based iterative repair, a technique that starts with a complete but possibly flawed schedule and iteratively improves it by using constraint knowledge within repair heuristics. In this paper we explore the tradeoff between the informedness and the computational cost of several repair heuristics. We show empirically that some knowledge can greatly improve the convergence speed of a repair-based system, but that too much knowledge, such as the knowledge embodied within the MIN-CONFLICTS lookahead heuristic, can overwhelm a system and result in degraded performance.

  15. Shaping academic task engagement with percentile schedules.

    PubMed

    Athens, Elizabeth S; Vollmer, Timothy R; Pipkin, Claire C St Peter

    2007-01-01

    The purpose of this study was to examine the use of percentile schedules as a method of quantifying the shaping procedure in an educational setting. We compared duration of task engagement during baseline measurements for 4 students to duration of task engagement during a percentile schedule. As a secondary purpose, we examined the influence on shaping of manipulations of the number of observations used to determine the criterion for reinforcement (the m parameter of the percentile formula). Results showed that the percentile formula was most effective when a relatively large m value (20 observations) was used.

  16. Workshop Scheduling in the MRO Context

    NASA Astrophysics Data System (ADS)

    Rupp, Benjamin; Pauli, Dirk; Feller, Sebastian; Skyttä, Manu

    2010-09-01

    Scheduling is an important task in production planning, as it can significantly increase the productivity of a workshop. In this paper we concentrate on a job-shop problem which arises at workshops of typical MRO service providers. An MRO does not only need to minimize the production time (the makespan) and maximize the plant utilization, it also needs to maximize the service and protection level of its stock. Hence, it has several objective functions which usually contradict each other. In this paper we present the novel CTO algorithm which helps to find a schedule regarding the mentioned objective functions.

  17. Shaping Academic Task Engagement with Percentile Schedules

    PubMed Central

    Athens, Elizabeth S; Vollmer, Timothy R; St. Peter Pipkin, Claire C

    2007-01-01

    The purpose of this study was to examine the use of percentile schedules as a method of quantifying the shaping procedure in an educational setting. We compared duration of task engagement during baseline measurements for 4 students to duration of task engagement during a percentile schedule. As a secondary purpose, we examined the influence on shaping of manipulations of the number of observations used to determine the criterion for reinforcement (the m parameter of the percentile formula). Results showed that the percentile formula was most effective when a relatively large m value (20 observations) was used. PMID:17970261

  18. Transit scheduling: Basic and advanced manuals. Final report

    SciTech Connect

    Pine, R.; Niemeyer, J.; Chisholm, R.

    1998-12-01

    This manual will be of interest to new transit schedulers, experienced schedulers, transit planners, operating staff, and others who need to be conversant with the scheduling process. The materials clearly describe all steps in the bus and light rail scheduling process, under TCRP Project A-11, Transit Scheduling: A Manual with Materials, research was undertaken by Transportation Management and Design of Solana Beach, California, to prepare a transit scheduling manual that incorporates modern training techniques for bus and light rail transit scheduling. The manual consists of two sections: a basic treatment and an advanced section. The basic-level section is in an instructional format designed primarily for novice schedulers and other transit staff. The advance section covers more complex scheduling requirements. Each section may be used sequentially or independently and is designed to integrate with agency apprenticeship and on-the-job training.

  19. The Probability of Small Schedule Values and Preference for Random-Interval Schedules

    PubMed Central

    Soreth, Michelle Ennis; Hineline, Philip N

    2009-01-01

    Preference for working on variable schedules and temporal discrimination were simultaneously examined in two experiments using a discrete-trial, concurrent-chains arrangement with fixed interval (FI) and random interval (RI) terminal links. The random schedule was generated by first sampling a probability distribution after the programmed delay to reinforcement on the FI schedule had elapsed, and thus the RI never produced a component schedule value shorter than the FI and maintained a rate of reinforcement half that of the FI. Despite these features, the FI was not strongly preferred. The probability of obtaining the smallest programmed delay to reinforcement on the RI schedule was manipulated in Experiment 1, and the interaction of this probability and initial link length was examined in Experiment 2. As the probability of obtaining small values in the RI increased, preference for the schedule increased while the discriminated time of reinforcer availability in the terminal link decreased. Both of these effects were attenuated by lengthening the initial links. The results support the view that in addition to the delay to reinforcement, the probability of obtaining a short delay is an important choice-affecting variable that likely contributes to the robust preferences for variable, as opposed to fixed, schedules of reinforcement. PMID:19230514

  20. Decomposability and scalability in space-based observatory scheduling

    NASA Technical Reports Server (NTRS)

    Muscettola, Nicola; Smith, Stephen F.

    1992-01-01

    In this paper, we discuss issues of problem and model decomposition within the HSTS scheduling framework. HSTS was developed and originally applied in the context of the Hubble Space Telescope (HST) scheduling problem, motivated by the limitations of the current solution and, more generally, the insufficiency of classical planning and scheduling approaches in this problem context. We first summarize the salient architectural characteristics of HSTS and their relationship to previous scheduling and AI planning research. Then, we describe some key problem decomposition techniques supported by HSTS and underlying our integrated planning and scheduling approach, and we discuss the leverage they provide in solving space-based observatory scheduling problems.

  1. 29 CFR 1952.123 - Developmental schedule.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 9 2012-07-01 2012-07-01 false Developmental schedule. 1952.123 Section 1952.123 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) APPROVED STATE PLANS FOR ENFORCEMENT OF STATE STANDARDS Washington § 1952.123...

  2. 29 CFR 1952.123 - Developmental schedule.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 9 2013-07-01 2013-07-01 false Developmental schedule. 1952.123 Section 1952.123 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) APPROVED STATE PLANS FOR ENFORCEMENT OF STATE STANDARDS Washington § 1952.123...

  3. Minimizing metastatic risk in radiotherapy fractionation schedules

    NASA Astrophysics Data System (ADS)

    Badri, Hamidreza; Ramakrishnan, Jagdish; Leder, Kevin

    2015-11-01

    Metastasis is the process by which cells from a primary tumor disperse and form new tumors at distant anatomical locations. The treatment and prevention of metastatic cancer remains an extremely challenging problem. This work introduces a novel biologically motivated objective function to the radiation optimization community that takes into account metastatic risk instead of the status of the primary tumor. In this work, we consider the problem of developing fractionated irradiation schedules that minimize production of metastatic cancer cells while keeping normal tissue damage below an acceptable level. A dynamic programming framework is utilized to determine the optimal fractionation scheme. We evaluated our approach on a breast cancer case using the heart and the lung as organs-at-risk (OAR). For small tumor α /β values, hypo-fractionated schedules were optimal, which is consistent with standard models. However, for relatively larger α /β values, we found the type of schedule depended on various parameters such as the time when metastatic risk was evaluated, the α /β values of the OARs, and the normal tissue sparing factors. Interestingly, in contrast to standard models, hypo-fractionated and semi-hypo-fractionated schedules (large initial doses with doses tapering off with time) were suggested even with large tumor α/β values. Numerical results indicate the potential for significant reduction in metastatic risk.

  4. 48 CFR 2908.404 - Using schedules.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 7 2010-10-01 2010-10-01 false Using schedules. 2908.404 Section 2908.404 Federal Acquisition Regulations System DEPARTMENT OF LABOR ACQUISITION PLANNING REQUIRED... subcontracting goals to the DOL Office of Small Business Programs)....

  5. 76 FR 57683 - Regulatory Review Schedule

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-16

    ... Regulation of Class II Gaming; (b) A Sole Proprietary Interest regulation; and (c) Class III MICS. The... regulations and Class III MICS after completion of the Tribal Advisory Committee process. This document... National Indian Gaming Commission 25 CFR Chapter III Regulatory Review Schedule AGENCY: National...

  6. Evaluation of Scheduling Methods for Multiple Runways

    NASA Technical Reports Server (NTRS)

    Bolender, Michael A.; Slater, G. L.

    1996-01-01

    Several scheduling strategies are analyzed in order to determine the most efficient means of scheduling aircraft when multiple runways are operational and the airport is operating at different utilization rates. The study compares simulation data for two and three runway scenarios to results from queuing theory for an M/D/n queue. The direction taken, however, is not to do a steady-state, or equilibrium, analysis since this is not the case during a rush period at a typical airport. Instead, a transient analysis of the delay per aircraft is performed. It is shown that the scheduling strategy that reduces the delay depends upon the density of the arrival traffic. For light traffic, scheduling aircraft to their preferred runways is sufficient; however, as the arrival rate increases, it becomes more important to separate traffic by weight class. Significant delay reduction is realized when aircraft that belong to the heavy and small weight classes are sent to separate runways with large aircraft put into the 'best' landing slot.

  7. Advance Resource Provisioning in Bulk Data Scheduling

    SciTech Connect

    Balman, Mehmet

    2012-10-01

    Today?s scientific and business applications generate mas- sive data sets that need to be transferred to remote sites for sharing, processing, and long term storage. Because of increasing data volumes and enhancement in current net- work technology that provide on-demand high-speed data access between collaborating institutions, data handling and scheduling problems have reached a new scale. In this paper, we present a new data scheduling model with ad- vance resource provisioning, in which data movement operations are defined with earliest start and latest comple- tion times. We analyze time-dependent resource assign- ment problem, and propose a new methodology to improve the current systems by allowing researchers and higher-level meta-schedulers to use data-placement as-a-service, so they can plan ahead and submit transfer requests in advance. In general, scheduling with time and resource conflicts is NP-hard. We introduce an efficient algorithm to organize multiple requests on the fly, while satisfying users? time and resource constraints. We successfully tested our algorithm in a simple benchmark simulator that we have developed, and demonstrated its performance with initial test results.

  8. Group scheduling problems in directional sensor networks

    NASA Astrophysics Data System (ADS)

    Singh, Alok; Rossi, André

    2015-12-01

    This article addresses the problem of scheduling a set of groups of directional sensors arising as a result of applying an exact or a heuristic approach for solving a problem involving directional sensors. The problem seeks a schedule for these groups that minimizes the total energy consumed in switching from one group to the next group in the schedule. In practice, when switching from a group to the next one, active sensors in the new group have to rotate in order to face their working direction. These rotations consume energy, and the problem is to schedule the groups so as to minimize the total amount of energy consumed by all the sensor rotations, knowing the initial angular positions of all the sensors. In this article, it is assumed that energy consumption is proportional to the angular movement for all the sensors. Another problem version is also investigated that seeks to minimize the total time during which the sensor network cannot cover all the targets because active sensors are rotating. Both problems are proved to be ?-hard, and a lower bound for the first problem is presented. A greedy heuristic and a genetic algorithm are also proposed for addressing the problem of minimizing total rotation in the general case. Finally, a local search is also proposed to improve the solutions obtained through a genetic algorithm.

  9. 45 CFR 1801.52 - Payment schedule.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Welfare Regulations Relating to Public Welfare (Continued) HARRY S. TRUMAN SCHOLARSHIP FOUNDATION HARRY S. TRUMAN SCHOLARSHIP PROGRAM Payment Conditions and Procedures § 1801.52 Payment schedule. The Foundation will pay the Scholar a portion of the award of the Scholarship stipend (as described in the...

  10. 45 CFR 1801.52 - Payment schedule.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Welfare Regulations Relating to Public Welfare (Continued) HARRY S. TRUMAN SCHOLARSHIP FOUNDATION HARRY S. TRUMAN SCHOLARSHIP PROGRAM Payment Conditions and Procedures § 1801.52 Payment schedule. The Foundation will pay the Scholar a portion of the award of the Scholarship stipend (as described in the...

  11. 45 CFR 1801.52 - Payment schedule.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Welfare Regulations Relating to Public Welfare (Continued) HARRY S. TRUMAN SCHOLARSHIP FOUNDATION HARRY S. TRUMAN SCHOLARSHIP PROGRAM Payment Conditions and Procedures § 1801.52 Payment schedule. The Foundation will pay the Scholar a portion of the award of the Scholarship stipend (as described in the...

  12. 45 CFR 1801.52 - Payment schedule.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Welfare Regulations Relating to Public Welfare (Continued) HARRY S. TRUMAN SCHOLARSHIP FOUNDATION HARRY S. TRUMAN SCHOLARSHIP PROGRAM Payment Conditions and Procedures § 1801.52 Payment schedule. The Foundation will pay the Scholar a portion of the award of the Scholarship stipend (as described in the...

  13. 45 CFR 1801.52 - Payment schedule.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Welfare Regulations Relating to Public Welfare (Continued) HARRY S. TRUMAN SCHOLARSHIP FOUNDATION HARRY S. TRUMAN SCHOLARSHIP PROGRAM Payment Conditions and Procedures § 1801.52 Payment schedule. The Foundation will pay the Scholar a portion of the award of the Scholarship stipend (as described in the...

  14. Parental Work Schedules and Adolescent Risky Behaviors

    ERIC Educational Resources Information Center

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

    2010-01-01

    Using a large contemporary data set (the National Longitudinal Survey of Youth-Child Supplement), the authors examined 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…

  15. 76 FR 10233 - Schedule of Water Charges

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-24

    ... amendments appeared in the Federal Register on February 19, 2010 (75 FR 7411), as well as in the Delaware... COMMISSION 18 CFR Part 420 Schedule of Water Charges AGENCY: Delaware River Basin Commission. ACTION: Final...--Water Supply Charges. Accordingly, the Commission's water charging rates for consumptive use and...

  16. 29 CFR 1952.351 - Developmental schedule.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 9 2013-07-01 2013-07-01 false Developmental schedule. 1952.351 Section 1952.351 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR... the plan: (a) Development of a complete management information and control system by July 1, 1976....

  17. 29 CFR 1952.351 - Developmental schedule.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 9 2012-07-01 2012-07-01 false Developmental schedule. 1952.351 Section 1952.351 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR... the plan: (a) Development of a complete management information and control system by July 1, 1976....

  18. 29 CFR 1952.351 - Developmental schedule.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 9 2010-07-01 2010-07-01 false Developmental schedule. 1952.351 Section 1952.351 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR... the plan: (a) Development of a complete management information and control system by July 1, 1976....

  19. 14 CFR § 1214.109 - Scheduling.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 5 2014-01-01 2014-01-01 false Scheduling. § 1214.109 Section § 1214.109 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION SPACE FLIGHT General Provisions Regarding Space Shuttle Flights of Payloads for Non-U.S. Government, Reimbursable Customers § 1214.109...

  20. 14 CFR 1214.109 - Scheduling.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 5 2013-01-01 2013-01-01 false Scheduling. 1214.109 Section 1214.109 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION SPACE FLIGHT General Provisions Regarding Space Shuttle Flights of Payloads for Non-U.S. Government, Reimbursable Customers § 1214.109...

  1. 14 CFR 1214.109 - Scheduling.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 5 2011-01-01 2010-01-01 true Scheduling. 1214.109 Section 1214.109 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION SPACE FLIGHT General Provisions Regarding Space Shuttle Flights of Payloads for Non-U.S. Government, Reimbursable Customers § 1214.109...

  2. 14 CFR 1214.109 - Scheduling.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 5 2010-01-01 2010-01-01 false Scheduling. 1214.109 Section 1214.109 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION SPACE FLIGHT General Provisions Regarding Space Shuttle Flights of Payloads for Non-U.S. Government, Reimbursable Customers § 1214.109...

  3. 40 CFR 52.825 - Compliance schedules.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... schedule. Editorial Note: For Federal Register citations affecting § 52.825, see the List of CFR Sections... Pollution Control of the Iowa Air Pollution Control Commission” shall, no later than December 31, 1972... chapter. All regulations cited are air pollution control regulations of the State, unless otherwise...

  4. 40 CFR 52.825 - Compliance schedules.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... schedule. Editorial Note: For Federal Register citations affecting § 52.825, see the List of CFR Sections... Pollution Control of the Iowa Air Pollution Control Commission” shall, no later than December 31, 1972... chapter. All regulations cited are air pollution control regulations of the State, unless otherwise...

  5. Scheduling with Automatic Resolution of Conflicts

    NASA Technical Reports Server (NTRS)

    Clement, Bradley; Schaffer, Steve

    2006-01-01

    DSN Requirement Scheduler is a computer program that automatically schedules, reschedules, and resolves conflicts for allocations of resources of NASA s Deep Space Network (DSN) on the basis of ever-changing project requirements for DSN services. As used here, resources signifies, primarily, DSN antennas, ancillary equipment, and times during which they are available. Examples of project-required DSN services include arraying, segmentation, very-long-baseline interferometry, and multiple spacecraft per aperture. Requirements can include periodic reservations of specific or optional resources during specific time intervals or within ranges specified in terms of starting times and durations. This program is built on the Automated Scheduling and Planning Environment (ASPEN) software system (aspects of which have been described in previous NASA Tech Briefs articles), with customization to reflect requirements and constraints involved in allocation of DSN resources. Unlike prior DSN-resource- scheduling programs that make single passes through the requirements and require human intervention to resolve conflicts, this program makes repeated passes in a continuing search for all possible allocations, provides a best-effort solution at any time, and presents alternative solutions among which users can choose.

  6. 40 CFR 52.2524 - Compliance schedules.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...) Federal compliance schedules. (1) The owner or operator of any boiler or furnace of more than 250 million... said regulation by utilizing low-sulfur fuel, stack gas desulfurization, or a combination of stack gas...) of this section who elects to utilize low-sulfur fuel, either alone or in combination with stack...

  7. 40 CFR 52.2524 - Compliance schedules.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...) Federal compliance schedules. (1) The owner or operator of any boiler or furnace of more than 250 million... said regulation by utilizing low-sulfur fuel, stack gas desulfurization, or a combination of stack gas...) of this section who elects to utilize low-sulfur fuel, either alone or in combination with stack...

  8. 40 CFR 52.2524 - Compliance schedules.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...) Federal compliance schedules. (1) The owner or operator of any boiler or furnace of more than 250 million... said regulation by utilizing low-sulfur fuel, stack gas desulfurization, or a combination of stack gas...) of this section who elects to utilize low-sulfur fuel, either alone or in combination with stack...

  9. 40 CFR 52.2524 - Compliance schedules.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...) Federal compliance schedules. (1) The owner or operator of any boiler or furnace of more than 250 million... said regulation by utilizing low-sulfur fuel, stack gas desulfurization, or a combination of stack gas...) of this section who elects to utilize low-sulfur fuel, either alone or in combination with stack...

  10. Effects of industrialization on working schedules.

    PubMed

    Kogi, K

    1976-12-01

    Recent increase in industrialization has resulted in attention being drawn to diversity of working schedules and their interrelation with content of work. The results of joint research revealed that adaptation to industrial jobs is made difficult because of urban conditions and modern work-control systems, such as workers in flexible-working-time systems who apparently favored regular daily working cycles. Long overtime work in smaller undertakings and the spread of shift systems are two important features of industrial work schedules, each being dominant among skilled and non-skilled jobs. Another important facet is the problem of intra-shift work-rest schedules significant for machine operations and vigilance tasks. It is suggested that phases of work that become intolerable are correlated with unnatural work rhythms. More emphasis should thus be laid on both phase-shifted work and non-self-governing work, the key factor being the relevance of attained data to real work in the whole course of schedules of work and rest.

  11. Scheduling constrained tools using heuristic techniques

    NASA Astrophysics Data System (ADS)

    Maram, Venkataramana; Rahman, Syariza Abdul; Maram, Sandhya Rani

    2015-12-01

    One of the main challenge to the current manufacturing production planning is to provide schedules of operations to maximize resource utilization to yield highest overall productivity. This is achieved by scheduling available resources to activities. There can be many different real time scenarios with different combination of input resources to produce parts. In this paper, the problem is simplified to single machine with individual process times and due dates to represent the real world scheduling problem. The main objective function is to minimize the total tardiness or late jobs. Nearest greedy method of assignment problem algorithm is used to find the initial solution followed by Simulated Annealing (SA) algorithm for the improvement part. Simulated Annealing is one of the meta-heuristic techniques in solving combinatorial optimization problem. The general purpose Microsoft Visual C++ is used to developed algorithm for finding the best solution. The proposed hybrid approach able to generate best schedule in 7th and optimal in 170th iteration with tardiness 8 and 7 hours respectively.

  12. 12 CFR 229.12 - Availability schedule.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 12 Banks and Banking 3 2010-01-01 2010-01-01 false Availability schedule. 229.12 Section 229.12 Banks and Banking FEDERAL RESERVE SYSTEM (CONTINUED) BOARD OF GOVERNORS OF THE FEDERAL RESERVE SYSTEM AVAILABILITY OF FUNDS AND COLLECTION OF CHECKS (REGULATION CC) Availability of Funds and Disclosure of...

  13. Quantifying Scheduling Challenges for Exascale System Software

    SciTech Connect

    Mondragon, Oscar; Bridges, Patrick G.; Jones, Terry R

    2015-01-01

    The move towards high-performance computing (HPC) ap- plications comprised of coupled codes and the need to dra- matically reduce data movement is leading to a reexami- nation of time-sharing vs. space-sharing in HPC systems. In this paper, we discuss and begin to quantify the perfor- mance impact of a move away from strict space-sharing of nodes for HPC applications. Specifically, we examine the po- tential performance cost of time-sharing nodes between ap- plication components, we determine whether a simple coor- dinated scheduling mechanism can address these problems, and we research how suitable simple constraint-based opti- mization techniques are for solving scheduling challenges in this regime. Our results demonstrate that current general- purpose HPC system software scheduling and resource al- location systems are subject to significant performance de- ciencies which we quantify for six representative applica- tions. Based on these results, we discuss areas in which ad- ditional research is needed to meet the scheduling challenges of next-generation HPC systems.

  14. Automated observation scheduling for the VLT

    NASA Technical Reports Server (NTRS)

    Johnston, Mark D.

    1988-01-01

    It is becoming increasingly evident that, in order to optimize the observing efficiency of large telescopes, some changes will be required in the way observations are planned and executed. Not all observing programs require the presence of the astronomer at the telescope: for those programs which permit service observing it is possible to better match planned observations to conditions at the telescope. This concept of flexible scheduling has been proposed for the VLT: based on current and predicted environmental and instrumental observations which make the most efficient possible use of valuable time. A similar kind of observation scheduling is already necessary for some space observatories, such as Hubble Space Telescope (HST). Space Telescope Science Institute is presently developing scheduling tools for HST, based on the use of artificial intelligence software development techniques. These tools could be readily adapted for ground-based telescope scheduling since they address many of the same issues. The concept are described on which the HST tools are based, their implementation, and what would be required to adapt them for use with the VLT and other ground-based observatories.

  15. 40 CFR 716.60 - Reporting schedule.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 31 2014-07-01 2014-07-01 false Reporting schedule. 716.60 Section 716.60 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) TOXIC SUBSTANCES CONTROL ACT... mixture being listed in § 716.120. (b)(1) Submission of lists of initiated studies. Persons subject to...

  16. 29 CFR 1952.311 - Developmental schedule.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 9 2011-07-01 2011-07-01 false Developmental schedule. 1952.311 Section 1952.311 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR.... (d) Complete implementation of the occupational health program by July 1975. (e) Complete State...

  17. 5 CFR 293.511 - Retention schedule.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... RECORDS Employee Medical File System Records § 293.511 Retention schedule. (a) Temporary EMFS records must not be placed in a newly-created EMF for a separating employee and must be removed from an already existing EMF before its transfer to another agency or to the NPRC. Such records must be disposed of...

  18. Schedule and status of irradiation experiments

    SciTech Connect

    Rowcliffe, A.F.; Grossbeck, M.L.; Robertson, J.P.

    1998-03-01

    The current status of reactor irradiation experiments is presented in tables summarizing the experimental objectives, conditions, and schedule. Currently, the program has four irradiation experiments in reactor, and five experiments in the design or construction stages. Postirradiation examination and testing is in progress on ten experiments.

  19. 10 CFR 51.15 - Time schedules.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... CFR part 2, the presiding officer, the Atomic Safety and Licensing Board or the Commissioners acting... 10 Energy 2 2014-01-01 2014-01-01 false Time schedules. 51.15 Section 51.15 Energy NUCLEAR... REGULATORY FUNCTIONS National Environmental Policy Act-Regulations Implementing Section 102(2) § 51.15...

  20. 10 CFR 51.15 - Time schedules.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... CFR part 2, the presiding officer, the Atomic Safety and Licensing Board or the Commissioners acting... 10 Energy 2 2011-01-01 2011-01-01 false Time schedules. 51.15 Section 51.15 Energy NUCLEAR... REGULATORY FUNCTIONS National Environmental Policy Act-Regulations Implementing Section 102(2) § 51.15...

  1. 10 CFR 51.15 - Time schedules.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... CFR part 2, the presiding officer, the Atomic Safety and Licensing Board or the Commissioners acting... 10 Energy 2 2013-01-01 2013-01-01 false Time schedules. 51.15 Section 51.15 Energy NUCLEAR... REGULATORY FUNCTIONS National Environmental Policy Act-Regulations Implementing Section 102(2) § 51.15...

  2. 14 CFR 1214.109 - Scheduling.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 5 2012-01-01 2012-01-01 false Scheduling. 1214.109 Section 1214.109 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION SPACE FLIGHT General Provisions Regarding Space Shuttle Flights of Payloads for Non-U.S. Government, Reimbursable Customers § 1214.109...

  3. 40 CFR 63.1291 - Compliance schedule.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 11 2010-07-01 2010-07-01 true Compliance schedule. 63.1291 Section 63.1291 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES National Emission Standards for Hazardous Air Pollutants for...

  4. 42 CFR 457.525 - Public schedule.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 4 2010-10-01 2010-10-01 false Public schedule. 457.525 Section 457.525 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) STATE CHILDREN'S HEALTH INSURANCE PROGRAMS (SCHIPs) ALLOTMENTS AND GRANTS TO STATES State...

  5. 42 CFR 457.525 - Public schedule.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 4 2014-10-01 2014-10-01 false Public schedule. 457.525 Section 457.525 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) STATE CHILDREN'S HEALTH INSURANCE PROGRAMS (SCHIPs) ALLOTMENTS AND GRANTS TO STATES State...

  6. A molar theory of reinforcement schedules.

    PubMed

    Rachlin, H

    1978-11-01

    Behavior of subjects exposed to concurrent and individual interval and ratio schedules of reinforcement may be described in terms of a set of expressions relating the value of responses to their durations, a feedback equation relating reinforcement to response duration, and the assumption that subjects allocate their time among various responses so as to maximize value.

  7. 40 CFR 52.1482 - Compliance schedules.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 4 2013-07-01 2013-07-01 false Compliance schedules. 52.1482 Section 52.1482 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED... adoption Jack N. Tedford, Inc Fallon Not given Aug. 14, 1972. Basic, Inc Gabbs Article 4 Feb. 13,...

  8. Schedule and status of irradiation experiments

    SciTech Connect

    Rowcliffe, A.F.; Grossbeck, M.L.; Robertson, J.P.

    1998-09-01

    The current status of reactor irradiation experiments is presented in tables summarizing the experimental objectives, conditions, and schedule. Currently, the program has one irradiation experiment in reactor and five experiments in the design or construction stages. Postirradiation examination and testing is in progress on ten experiments.

  9. 21 CFR 1308.12 - Schedule II.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...) Editorial Note: For Federal Register citations affecting § 1308.12, see the List of CFR Sections Affected...) and ecgonine (9180) and their salts, isomers, derivatives and salts of isomers and derivatives), and... another schedule any of the following opiates, including its isomers, esters, ethers, salts and salts...

  10. 21 CFR 1308.12 - Schedule II.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...) Editorial Note: For Federal Register citations affecting § 1308.12, see the List of CFR Sections Affected...) and ecgonine (9180) and their salts, isomers, derivatives and salts of isomers and derivatives), and... another schedule any of the following opiates, including its isomers, esters, ethers, salts and salts...

  11. 21 CFR 1308.12 - Schedule II.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...) Editorial Note: For Federal Register citations affecting § 1308.12, see the List of CFR Sections Affected...) and ecgonine (9180) and their salts, isomers, derivatives and salts of isomers and derivatives), and... another schedule any of the following opiates, including its isomers, esters, ethers, salts and salts...

  12. 21 CFR 1308.12 - Schedule II.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...) Editorial Note: For Federal Register citations affecting § 1308.12, see the List of CFR Sections Affected...) and ecgonine (9180) and their salts, isomers, derivatives and salts of isomers and derivatives), and... another schedule any of the following opiates, including its isomers, esters, ethers, salts and salts...

  13. 21 CFR 1308.12 - Schedule II.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... (PCC) 8603 Editorial Note: For Federal Register citations affecting § 1308.12, see the List of CFR...) and ecgonine (9180) and their salts, isomers, derivatives and salts of isomers and derivatives), and... another schedule any of the following opiates, including its isomers, esters, ethers, salts and salts...

  14. 29 CFR 1952.201 - Developmental schedule.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 9 2010-07-01 2010-07-01 false Developmental schedule. 1952.201 Section 1952.201 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) APPROVED STATE PLANS FOR ENFORCEMENT OF STATE STANDARDS Minnesota § 1952.201...

  15. 29 CFR 1952.201 - Developmental schedule.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 9 2011-07-01 2011-07-01 false Developmental schedule. 1952.201 Section 1952.201 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) APPROVED STATE PLANS FOR ENFORCEMENT OF STATE STANDARDS Minnesota § 1952.201...

  16. 29 CFR 1952.201 - Developmental schedule.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 9 2014-07-01 2014-07-01 false Developmental schedule. 1952.201 Section 1952.201 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) APPROVED STATE PLANS FOR ENFORCEMENT OF STATE STANDARDS Minnesota § 1952.201...

  17. 29 CFR 1952.201 - Developmental schedule.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 9 2013-07-01 2013-07-01 false Developmental schedule. 1952.201 Section 1952.201 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) APPROVED STATE PLANS FOR ENFORCEMENT OF STATE STANDARDS Minnesota § 1952.201...

  18. 29 CFR 1952.201 - Developmental schedule.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 9 2012-07-01 2012-07-01 false Developmental schedule. 1952.201 Section 1952.201 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) APPROVED STATE PLANS FOR ENFORCEMENT OF STATE STANDARDS Minnesota § 1952.201...

  19. 40 CFR 52.626 - Compliance schedules.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Subpart N of this chapter. The regulations cited are air pollution control regulations of the State....626 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS Hawaii § 52.626 Compliance schedules. (a) (b)...

  20. 40 CFR 52.1175 - Compliance schedules.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...) APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS (CONTINUED) Michigan § 52.1175 Compliance schedules. (a... Rule 336.49 of the Michigan Air Pollution Control Commission provides for individual compliance... source subject to the following emission-limiting regulations in the Michigan implementation plan...

  1. 40 CFR 52.1175 - Compliance schedules.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...) APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS (CONTINUED) Michigan § 52.1175 Compliance schedules. (a... Rule 336.49 of the Michigan Air Pollution Control Commission provides for individual compliance... source subject to the following emission-limiting regulations in the Michigan implementation plan...

  2. 40 CFR 52.1175 - Compliance schedules.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...) APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS (CONTINUED) Michigan § 52.1175 Compliance schedules. (a... Rule 336.49 of the Michigan Air Pollution Control Commission provides for individual compliance... source subject to the following emission-limiting regulations in the Michigan implementation plan...

  3. MHEC Academic Scheduling Software Survey Results.

    ERIC Educational Resources Information Center

    Midwestern Higher Education Commission Academic Software Committee Research Bulletin, 1995

    1995-01-01

    This bulletin summarizes the chief quantitative findings of a survey of 264 small and medium sized colleges and universities in the midwest concerning their use of and interest in academic scheduling software. This type of software assists in planning course offerings, assigning instructors and course functions to facilities and time slots, and…

  4. An integrated scheduling and program management system

    NASA Astrophysics Data System (ADS)

    Porter, D.; Gibson, J. D.; Williams, G. G.

    2012-09-01

    An integrated scheduling and program management system is being developed for the MMT Observatory (MMTO), Arizona, USA. A systems engineering approach is used to combine existing and new relational databases, spreadsheets, file storage systems, and web-based user interfaces into a single unified system. An overview of software design, data management, user interfaces, and techniques for performance assessment is presented. Goals of this system include streamlined data management and an optimized user experience. The MMTO has over a dozen different telescope configurations, including three secondary mirrors and a wide range of observing instruments. Scheduling is complex for the varying telescope configurations, limited available observing time, and appropriate astronomic conditions (e.g., lunar phase) for each science project. Scheduled telescope configurations can be used to perform safety checks of actual configuration during telescope operations. Programmatic information is automatically input into nightly telescope operator (TO) logs by the system. The TO's provide additional information into the system on telescope usage, observing conditions (e.g., weather conditions), and observatory closure (e.g., from instrument malfunction or inclement weather). All of this information is synthesized to assess telescope and observatory performance. Web interfaces to the system can be used by observers to submit information, such as travel plans, instrumentation requirements, and observing catalogs. A service request (SR) (i.e., trouble report) system has also been developed for tracking operational issues. The specific needs of the MMTO have been met through in-house software development of this integrated scheduling and program management system.

  5. Schedule and status of irradiation experiments

    SciTech Connect

    Rowcliffe, A.F.; Grossbeck, M.L.

    1997-04-01

    To provide an updated summary of the status of irradiation experiments for the neutron-interactive materials program. The current status of reactor irradiation experiments is presented in tables summarizing the experimental objectives, conditions, and schedule. Currently, the program has two irradiation experiments in reactor; and 8 experiments in the planning or design stages. Postirradiation examination and testing is in progress on 18 experiments.

  6. 24 CFR 965.307 - Compliance schedule.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 24 Housing and Urban Development 4 2013-04-01 2013-04-01 false Compliance schedule. 965.307 Section 965.307 Housing and Urban Development REGULATIONS RELATING TO HOUSING AND URBAN DEVELOPMENT (CONTINUED) OFFICE OF ASSISTANT SECRETARY FOR PUBLIC AND INDIAN HOUSING, DEPARTMENT OF HOUSING AND...

  7. 40 CFR 62.2354 - Compliance schedules.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Administrator pursuant to 40 CFR 60.23(g). Metals, Acid Gases, Organic Compounds and Nitrogen Oxide Emissions... pursuant to 40 CFR 60.21(h) would be specified at that time; this is an acceptable procedure pursuant to 40 CFR 60.24(e)(2). However, the State must submit these schedules to EPA for approval; and...

  8. 40 CFR 62.2354 - Compliance schedules.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Administrator pursuant to 40 CFR 60.23(g). Metals, Acid Gases, Organic Compounds and Nitrogen Oxide Emissions... pursuant to 40 CFR 60.21(h) would be specified at that time; this is an acceptable procedure pursuant to 40 CFR 60.24(e)(2). However, the State must submit these schedules to EPA for approval; and...

  9. 40 CFR 52.1335 - Compliance schedules.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 4 2010-07-01 2010-07-01 false Compliance schedules. 52.1335 Section 52.1335 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED... Effective date Final compliance date Pilot Knob Pelleting Co Pilot Knob, MO V(10 CSR 10-3.050) Oct. 19,...

  10. 29 CFR 2702.6 - Fee schedule.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... FREEDOM OF INFORMATION ACT § 2702.6 Fee schedule. (a) Search fee. The fee for searching for information and records shall be the salary rate (that is, basic pay plus 16%) of the employee making the search. This hourly rate is listed on the Commission's Web site at http://www.fmshrc.gov. Fees for searches...

  11. 40 CFR 63.1401 - Compliance schedule.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 11 2010-07-01 2010-07-01 true Compliance schedule. 63.1401 Section 63.1401 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES National Emission...

  12. Planning for the Intensively Scheduled Class.

    ERIC Educational Resources Information Center

    Hertz, Vivienne

    How does the college faculty member involved in off-campus teaching plan for intensively scheduled classes comprised of forty hours of instruction in three weekends? Two main areas of concern are (1) the differences between these students and those found on the main campus and (2) methods of providing variety in instruction to maintain a…

  13. Fall 1977 Student Survey of Schedule.

    ERIC Educational Resources Information Center

    Corbitt, Gail

    A survey was conducted to find out how students felt about the scheduling of classes at Arapahoe Community College. A stratified random sample of 97 classes, involving 1,775 students or 28% of the student body, was used. Questions were designed to assess: (1) the type of classes in which the student typically enrolled, day/night, etc.; (2) an…

  14. 10 CFR 51.15 - Time schedules.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... CFR part 2, the presiding officer, the Atomic Safety and Licensing Board or the Commissioners acting... 10 Energy 2 2010-01-01 2010-01-01 false Time schedules. 51.15 Section 51.15 Energy NUCLEAR... REGULATORY FUNCTIONS National Environmental Policy Act-Regulations Implementing Section 102(2) § 51.15...

  15. 5 CFR 293.404 - Retention schedule.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... RECORDS Employee Performance File System Records § 293.404 Retention schedule. (a)(1) Except as provided... in this system, including transfer with the employee who changes positions, shall be as agencies... performance-related documents five years old or less shall be forwarded in the Employee Performance File...

  16. 5 CFR 838.132 - Payment schedules.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... (CONTINUED) COURT ORDERS AFFECTING RETIREMENT BENEFITS Court Orders Generally Procedures Applicable to All Court Orders § 838.132 Payment schedules. (a) Under CSRS and FERS, employee annuities and survivor... accrues. (b) In honoring and complying with a court order, OPM will not disrupt the payment...

  17. 5 CFR 838.132 - Payment schedules.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... (CONTINUED) COURT ORDERS AFFECTING RETIREMENT BENEFITS Court Orders Generally Procedures Applicable to All Court Orders § 838.132 Payment schedules. (a) Under CSRS and FERS, employee annuities and survivor... accrues. (b) In honoring and complying with a court order, OPM will not disrupt the payment...

  18. 5 CFR 838.132 - Payment schedules.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... (CONTINUED) COURT ORDERS AFFECTING RETIREMENT BENEFITS Court Orders Generally Procedures Applicable to All Court Orders § 838.132 Payment schedules. (a) Under CSRS and FERS, employee annuities and survivor... accrues. (b) In honoring and complying with a court order, OPM will not disrupt the payment...

  19. 5 CFR 838.132 - Payment schedules.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... (CONTINUED) COURT ORDERS AFFECTING RETIREMENT BENEFITS Court Orders Generally Procedures Applicable to All Court Orders § 838.132 Payment schedules. (a) Under CSRS and FERS, employee annuities and survivor... accrues. (b) In honoring and complying with a court order, OPM will not disrupt the payment...

  20. 5 CFR 838.132 - Payment schedules.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... (CONTINUED) COURT ORDERS AFFECTING RETIREMENT BENEFITS Court Orders Generally Procedures Applicable to All Court Orders § 838.132 Payment schedules. (a) Under CSRS and FERS, employee annuities and survivor... accrues. (b) In honoring and complying with a court order, OPM will not disrupt the payment...

  1. 40 CFR 52.1677 - Compliance schedules.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... progress toward compliance by affected sources or categories of sources. (c) The requirements of § 51.262(a... been submitted for every source for which they are required. (d) Federal compliance schedules. (1) The... 1, 1973, of his intent to utilize either low-sulfur fuel or stack gas desulfurization to meet...

  2. 40 CFR 52.927 - Compliance schedules.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... progress have not been submitted for every source for which they are required. (b) Federal compliance schedules. (1) Except as provided in paragraph (b)(5) of this section, the owner or operator of any fuel... apply to sulfur dioxide sources, shall notify the Regional Administrator, by no later than November...

  3. 40 CFR 52.927 - Compliance schedules.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... progress have not been submitted for every source for which they are required. (b) Federal compliance schedules. (1) Except as provided in paragraph (b)(5) of this section, the owner or operator of any fuel... apply to sulfur dioxide sources, shall notify the Regional Administrator, by no later than November...

  4. 40 CFR 52.1677 - Compliance schedules.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... progress toward compliance by affected sources or categories of sources. (c) The requirements of § 51.262(a... been submitted for every source for which they are required. (d) Federal compliance schedules. (1) The... 1, 1973, of his intent to utilize either low-sulfur fuel or stack gas desulfurization to meet...

  5. 40 CFR 58.12 - Operating schedules.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... seasons exempted by the Regional Administrator. (b) For Pb manual methods, at least one 24-hour sample must be collected every 6 days except during periods or seasons exempted by the Regional Administrator... must operate on at least a 1-in-3 day schedule. (ii) For SLAMS PM 2.5 sites with both manual...

  6. 40 CFR 58.12 - Operating schedules.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... seasons exempted by the Regional Administrator. (b) For Pb manual methods, at least one 24-hour sample must be collected every 6 days except during periods or seasons exempted by the Regional Administrator... on at least a 1-in-3 day schedule. (ii) For SLAMS PM2.5 sites with both manual and continuous...

  7. Parental Work Schedules and Children's Cognitive Trajectories

    ERIC Educational Resources Information Center

    Han, Wen-Jui; Fox, Liana E.

    2011-01-01

    Previous work has shown an association between mothers' nonstandard work schedules and children's well-being. We built on this research by examining the relationship between parental shift work and children's reading and math trajectories from age 5-6 to 13-14. Using data (N = 7,105) from the National Longitudinal Survey of Youth and growth-curve…

  8. A molar theory of reinforcement schedules

    PubMed Central

    Rachlin, Howard

    1978-01-01

    Behavior of subjects exposed to concurrent and individual interval and ratio schedules of reinforcement may be described in terms of a set of expressions relating the value of responses to their durations, a feedback equation relating reinforcement to response duration, and the assumption that subjects allocate their time among various responses so as to maximize value. PMID:16812114

  9. 12 CFR 229.12 - Availability schedule.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 3 2012-01-01 2012-01-01 false Availability schedule. 229.12 Section 229.12 Banks and Banking FEDERAL RESERVE SYSTEM (CONTINUED) BOARD OF GOVERNORS OF THE FEDERAL RESERVE SYSTEM AVAILABILITY OF FUNDS AND COLLECTION OF CHECKS (REGULATION CC) Availability of Funds and Disclosure of...

  10. 12 CFR 229.12 - Availability schedule.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 3 2013-01-01 2013-01-01 false Availability schedule. 229.12 Section 229.12 Banks and Banking FEDERAL RESERVE SYSTEM (CONTINUED) BOARD OF GOVERNORS OF THE FEDERAL RESERVE SYSTEM (CONTINUED) AVAILABILITY OF FUNDS AND COLLECTION OF CHECKS (REGULATION CC) Availability of Funds...

  11. 12 CFR 229.12 - Availability schedule.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 3 2014-01-01 2014-01-01 false Availability schedule. 229.12 Section 229.12 Banks and Banking FEDERAL RESERVE SYSTEM (CONTINUED) BOARD OF GOVERNORS OF THE FEDERAL RESERVE SYSTEM (CONTINUED) AVAILABILITY OF FUNDS AND COLLECTION OF CHECKS (REGULATION CC) Availability of Funds...

  12. 12 CFR 229.12 - Availability schedule.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 12 Banks and Banking 3 2011-01-01 2011-01-01 false Availability schedule. 229.12 Section 229.12 Banks and Banking FEDERAL RESERVE SYSTEM (CONTINUED) BOARD OF GOVERNORS OF THE FEDERAL RESERVE SYSTEM AVAILABILITY OF FUNDS AND COLLECTION OF CHECKS (REGULATION CC) Availability of Funds and Disclosure of...

  13. Energy-Efficient Scheduling of Bedding Plants

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Desirable scheduling of garden plants includes producing a marketable crop for a specific date with the least amount of inputs as possible. A large contribution to input costs for greenhouse production are overhead expenses, and during winter and early spring production, heating can be a large comp...

  14. A User Centered Faculty Scheduled Development Framework

    ERIC Educational Resources Information Center

    Hadian, Shohreh; Sly, Nancy

    2014-01-01

    Colleges provide professional development opportunities to faculty to promote knowledge growth and improvement of skills. At the college, Scheduled Development (SD) time for faculty is based on the educational practice and recognition of the need for continuous professional development of faculty members. The paper presents a user-centered…

  15. Irrigation scheduling: When, where, and how much?

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Irrigation scheduling, a key element of proper water management, is the accurate forecasting of water application (amount and timing) for optimal crop production (yield and fruit quality). The goal is to apply the correct amount of water at the right time to minimize irrigation costs and maximize cr...

  16. 76 FR 33181 - Regulatory Review Schedule

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-08

    ... processes. (76 FR 18457, April 4, 2011). The Commission's regulatory review process establishes a detailed... National Indian Gaming Commission 25 CFR Chapter III Regulatory Review Schedule AGENCY: National Indian... Notice of Consultation advising the public that the NIGC was conducting a comprehensive review of all...

  17. 76 FR 54408 - Regulatory Review Schedule

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-01

    .... (76 FR 18457, April 4, 2011). The Commission's regulatory review process established a tribal... National Indian Gaming Commission 25 CFR Chapter III Regulatory Review Schedule AGENCY: National Indian..., 1441 L Street, NW., Suite 9100, Washington, DC 20005. Telephone: 202-632-7003; e-mail:...

  18. 76 FR 26967 - Regulatory Review Schedule

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-10

    ... National Indian Gaming Commission 25 CFR Chapter III Regulatory Review Schedule AGENCY: National Indian... advising the public that the NIGC was conducting a comprehensive review of its regulations and requesting public comment on the process for conducting the regulatory review. On April 4, 2011, after holding...

  19. A Computerized Scheduling System for Media Centers.

    ERIC Educational Resources Information Center

    Purvis, Benjamin P.; Root, Jon R.

    1986-01-01

    Reviews Oregon State University Communication Media Center's experiences in designing, developing, and using a computerized scheduling system to help with the center's operation. Description includes purposes for developing the system, creation of the system using a commercial database management software package, and the five menus used in the…

  20. 7 CFR 283.29 - Scheduling conference.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 4 2013-01-01 2013-01-01 false Scheduling conference. 283.29 Section 283.29 Agriculture Regulations of the Department of Agriculture (Continued) FOOD AND NUTRITION SERVICE, DEPARTMENT OF AGRICULTURE FOOD STAMP AND FOOD DISTRIBUTION PROGRAM APPEALS OF QUALITY CONTROL (âQCâ) CLAIMS...

  1. 7 CFR 283.29 - Scheduling conference.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 4 2014-01-01 2014-01-01 false Scheduling conference. 283.29 Section 283.29 Agriculture Regulations of the Department of Agriculture (Continued) FOOD AND NUTRITION SERVICE, DEPARTMENT OF AGRICULTURE FOOD STAMP AND FOOD DISTRIBUTION PROGRAM APPEALS OF QUALITY CONTROL (âQCâ) CLAIMS Summary Procedure for Appeals of QC Claims of...

  2. 7 CFR 283.29 - Scheduling conference.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 4 2012-01-01 2012-01-01 false Scheduling conference. 283.29 Section 283.29 Agriculture Regulations of the Department of Agriculture (Continued) FOOD AND NUTRITION SERVICE, DEPARTMENT OF AGRICULTURE FOOD STAMP AND FOOD DISTRIBUTION PROGRAM APPEALS OF QUALITY CONTROL (âQCâ) CLAIMS...

  3. 7 CFR 283.29 - Scheduling conference.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 4 2011-01-01 2011-01-01 false Scheduling conference. 283.29 Section 283.29 Agriculture Regulations of the Department of Agriculture (Continued) FOOD AND NUTRITION SERVICE, DEPARTMENT OF AGRICULTURE FOOD STAMP AND FOOD DISTRIBUTION PROGRAM APPEALS OF QUALITY CONTROL (âQCâ) CLAIMS...

  4. 29 CFR 1952.211 - Developmental schedule.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 9 2012-07-01 2012-07-01 false Developmental schedule. 1952.211 Section 1952.211 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) APPROVED STATE PLANS FOR ENFORCEMENT OF STATE STANDARDS Maryland § 1952.211...

  5. 29 CFR 1952.211 - Developmental schedule.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 9 2013-07-01 2013-07-01 false Developmental schedule. 1952.211 Section 1952.211 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) APPROVED STATE PLANS FOR ENFORCEMENT OF STATE STANDARDS Maryland § 1952.211...

  6. 29 CFR 1952.211 - Developmental schedule.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 9 2014-07-01 2014-07-01 false Developmental schedule. 1952.211 Section 1952.211 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) APPROVED STATE PLANS FOR ENFORCEMENT OF STATE STANDARDS Maryland § 1952.211...

  7. 29 CFR 1952.211 - Developmental schedule.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 9 2011-07-01 2011-07-01 false Developmental schedule. 1952.211 Section 1952.211 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) APPROVED STATE PLANS FOR ENFORCEMENT OF STATE STANDARDS Maryland § 1952.211...

  8. 29 CFR 1952.211 - Developmental schedule.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 9 2010-07-01 2010-07-01 false Developmental schedule. 1952.211 Section 1952.211 Labor Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR (CONTINUED) APPROVED STATE PLANS FOR ENFORCEMENT OF STATE STANDARDS Maryland § 1952.211...

  9. 6 CFR 27.210 - Submissions schedule.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 6 Domestic Security 1 2014-01-01 2014-01-01 false Submissions schedule. 27.210 Section 27.210 Domestic Security DEPARTMENT OF HOMELAND SECURITY, OFFICE OF THE SECRETARY CHEMICAL FACILITY ANTI-TERRORISM... facility's vulnerabilities, the level and immediacy of security risk, or for other reasons. If...

  10. 6 CFR 27.210 - Submissions schedule.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 6 Domestic Security 1 2011-01-01 2011-01-01 false Submissions schedule. 27.210 Section 27.210 Domestic Security DEPARTMENT OF HOMELAND SECURITY, OFFICE OF THE SECRETARY CHEMICAL FACILITY ANTI-TERRORISM... facility's vulnerabilities, the level and immediacy of security risk, or for other reasons. If...

  11. 6 CFR 27.210 - Submissions schedule.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 6 Domestic Security 1 2013-01-01 2013-01-01 false Submissions schedule. 27.210 Section 27.210 Domestic Security DEPARTMENT OF HOMELAND SECURITY, OFFICE OF THE SECRETARY CHEMICAL FACILITY ANTI-TERRORISM... facility's vulnerabilities, the level and immediacy of security risk, or for other reasons. If...

  12. 6 CFR 27.210 - Submissions schedule.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 6 Domestic Security 1 2012-01-01 2012-01-01 false Submissions schedule. 27.210 Section 27.210 Domestic Security DEPARTMENT OF HOMELAND SECURITY, OFFICE OF THE SECRETARY CHEMICAL FACILITY ANTI-TERRORISM... facility's vulnerabilities, the level and immediacy of security risk, or for other reasons. If...

  13. 42 CFR 441.58 - Periodicity schedule.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... recognized medical and dental organizations involved in child health care; (b) Specifies screening services... 42 Public Health 4 2012-10-01 2012-10-01 false Periodicity schedule. 441.58 Section 441.58 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES...

  14. 42 CFR 441.58 - Periodicity schedule.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... recognized medical and dental organizations involved in child health care; (b) Specifies screening services... 42 Public Health 4 2013-10-01 2013-10-01 false Periodicity schedule. 441.58 Section 441.58 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES...

  15. 42 CFR 441.58 - Periodicity schedule.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... recognized medical and dental organizations involved in child health care; (b) Specifies screening services... 42 Public Health 4 2014-10-01 2014-10-01 false Periodicity schedule. 441.58 Section 441.58 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES...

  16. 42 CFR 441.58 - Periodicity schedule.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... recognized medical and dental organizations involved in child health care; (b) Specifies screening services... 42 Public Health 4 2011-10-01 2011-10-01 false Periodicity schedule. 441.58 Section 441.58 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES...

  17. 46 CFR 525.2 - Terminal schedules.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 9 2014-10-01 2014-10-01 false Terminal schedules. 525.2 Section 525.2 Shipping FEDERAL MARITIME COMMISSION REGULATIONS AFFECTING OCEAN SHIPPING IN FOREIGN COMMERCE MARINE TERMINAL OPERATOR... paragraph (b)(2) of this section, this part does not apply to bulk cargo, forest products, recycled...

  18. 46 CFR 525.2 - Terminal schedules.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 9 2012-10-01 2012-10-01 false Terminal schedules. 525.2 Section 525.2 Shipping FEDERAL MARITIME COMMISSION REGULATIONS AFFECTING OCEAN SHIPPING IN FOREIGN COMMERCE MARINE TERMINAL OPERATOR... paragraph (b)(2) of this section, this part does not apply to bulk cargo, forest products, recycled...

  19. 46 CFR 525.2 - Terminal schedules.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 9 2010-10-01 2010-10-01 false Terminal schedules. 525.2 Section 525.2 Shipping FEDERAL MARITIME COMMISSION REGULATIONS AFFECTING OCEAN SHIPPING IN FOREIGN COMMERCE MARINE TERMINAL OPERATOR... paragraph (b)(2) of this section, this part does not apply to bulk cargo, forest products, recycled...

  20. 46 CFR 525.2 - Terminal schedules.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 9 2013-10-01 2013-10-01 false Terminal schedules. 525.2 Section 525.2 Shipping FEDERAL MARITIME COMMISSION REGULATIONS AFFECTING OCEAN SHIPPING IN FOREIGN COMMERCE MARINE TERMINAL OPERATOR... paragraph (b)(2) of this section, this part does not apply to bulk cargo, forest products, recycled...

  1. Scheduling for Public Service in International Operations

    NASA Technical Reports Server (NTRS)

    Brenner, M. A.

    1972-01-01

    The factors involved in scheduling airline services for international operations are discussed. Charts are presented to show the transatlantic pattern of flights for a typical airline during the summer and winter months. The operations of a domestic airline operating overseas and a foreign airline operating to the United States are compared.

  2. 40 CFR 52.1482 - Compliance schedules.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...) APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS (CONTINUED) Nevada § 52.1482 Compliance schedules. (a)-(b... adoption Jack N. Tedford, Inc Fallon Not given Aug. 14, 1972. Basic, Inc Gabbs Article 4 Feb. 13, 1973. Article 7 June 26, 1973. Duval Corp Battle Mountain Article 5 Feb. 13, 1973. Mohave Generating...

  3. Artificial intelligence for the CTA Observatory scheduler

    NASA Astrophysics Data System (ADS)

    Colomé, Josep; Colomer, Pau; Campreciós, Jordi; Coiffard, Thierry; de Oña, Emma; Pedaletti, Giovanna; Torres, Diego F.; Garcia-Piquer, Alvaro

    2014-08-01

    The Cherenkov Telescope Array (CTA) project will be the next generation ground-based very high energy gamma-ray instrument. The success of the precursor projects (i.e., HESS, MAGIC, VERITAS) motivated the construction of this large infrastructure that is included in the roadmap of the ESFRI projects since 2008. CTA is planned to start the construction phase in 2015 and will consist of two arrays of Cherenkov telescopes operated as a proposal-driven open observatory. Two sites are foreseen at the southern and northern hemispheres. The CTA observatory will handle several observation modes and will have to operate tens of telescopes with a highly efficient and reliable control. Thus, the CTA planning tool is a key element in the control layer for the optimization of the observatory time. The main purpose of the scheduler for CTA is the allocation of multiple tasks to one single array or to multiple sub-arrays of telescopes, while maximizing the scientific return of the facility and minimizing the operational costs. The scheduler considers long- and short-term varying conditions to optimize the prioritization of tasks. A short-term scheduler provides the system with the capability to adapt, in almost real-time, the selected task to the varying execution constraints (i.e., Targets of Opportunity, health or status of the system components, environment conditions). The scheduling procedure ensures that long-term planning decisions are correctly transferred to the short-term prioritization process for a suitable selection of the next task to execute on the array. In this contribution we present the constraints to CTA task scheduling that helped classifying it as a Flexible Job-Shop Problem case and finding its optimal solution based on Artificial Intelligence techniques. We describe the scheduler prototype that uses a Guarded Discrete Stochastic Neural Network (GDSN), for an easy representation of the possible long- and short-term planning solutions, and Constraint

  4. XOPPS - OEL PROJECT PLANNER/SCHEDULER TOOL

    NASA Technical Reports Server (NTRS)

    Mulnix, C. L.

    1994-01-01

    XOPPS is a window-based graphics tool for scheduling and project planning that provides easy and fast on-screen WYSIWYG editing capabilities. It has a canvas area which displays the full image of the schedule being edited. The canvas contains a header area for text and a schedule area for plotting graphic representations of milestone objects in a flexible timeline. XOPPS is object-oriented, but it is unique in its capability for creating objects that have date attributes. Each object on the screen can be treated as a unit for moving, editing, etc. There is a mouse interface for simple control of pointer location. The user can position objects to pixel resolution, but objects with an associated date are positioned automatically in their correct timeline position in the schedule area. The schedule area has horizontal lines across the page with capabilities for multiple pages and for editing the number of lines per page and the line grid. The text on a line can be edited and a line can be moved with all objects on the line moving with it. The timeline display can be edited to plot any time period in a variety of formats from Fiscal year to Calendar Year and days to years. Text objects and image objects (rasterfiles and icons) can be created for placement anywhere on the page. Milestone event objects with a single associated date (and optional text and milestone symbol) and activity objects with start and end dates (and an optional completion date) have unique editing panels for entering data. A representation for schedule slips is also provided with the capability to automatically convert a milestone event to a slip. A milestone schedule on another computer can be saved to an ASCII file to be read by XOPPS. The program can print a schedule to a PostScript file. Dependencies between objects can also be displayed on the chart through the use of precedence lines. This program is not intended to replace a commercial scheduling/project management program. Because XOPPS has

  5. Analysis of Issues for Project Scheduling by Multiple, Dispersed Schedulers (distributed Scheduling) and Requirements for Manual Protocols and Computer-based Support

    NASA Technical Reports Server (NTRS)

    Richards, Stephen F.

    1991-01-01

    Although computerized operations have significant gains realized in many areas, one area, scheduling, has enjoyed few benefits from automation. The traditional methods of industrial engineering and operations research have not proven robust enough to handle the complexities associated with the scheduling of realistic problems. To address this need, NASA has developed the computer-aided scheduling system (COMPASS), a sophisticated, interactive scheduling tool that is in wide-spread use within NASA and the contractor community. Therefore, COMPASS provides no explicit support for the large class of problems in which several people, perhaps at various locations, build separate schedules that share a common pool of resources. This research examines the issue of distributing scheduling, as applied to application domains characterized by the partial ordering of tasks, limited resources, and time restrictions. The focus of this research is on identifying issues related to distributed scheduling, locating applicable problem domains within NASA, and suggesting areas for ongoing research. The issues that this research identifies are goals, rescheduling requirements, database support, the need for communication and coordination among individual schedulers, the potential for expert system support for scheduling, and the possibility of integrating artificially intelligent schedulers into a network of human schedulers.

  6. An Analysis of Shuttle Crew Scheduling Violations

    NASA Technical Reports Server (NTRS)

    Bristol, Douglas

    2012-01-01

    From the early years of the Space Shuttle program, National Aeronautics and Space Administration (NASA) Shuttle crews have had a timeline of activities to guide them through their time on-orbit. Planners used scheduling constraints to build timelines that ensured the health and safety of the crews. If a constraint could not be met it resulted in a violation. Other agencies of the federal government also have scheduling constraints to ensure the safety of personnel and the public. This project examined the history of Space Shuttle scheduling constraints, constraints from Federal agencies and branches of the military and how these constraints may be used as a guide for future NASA and private spacecraft. This was conducted by reviewing rules and violations with regard to human aerospace scheduling constraints, environmental, political, social and technological factors, operating environment and relevant human factors. This study includes a statistical analysis of Shuttle Extra Vehicular Activity (EVA) related violations to determine if these were a significant producer of constraint violations. It was hypothesized that the number of SCSC violations caused by EVA activities were a significant contributor to the total number of violations for Shuttle/ISS missions. Data was taken from NASA data archives at the Johnson Space Center from Space Shuttle/ISS missions prior to the STS-107 accident. The results of the analysis rejected the null hypothesis and found that EVA violations were a significant contributor to the total number of violations. This analysis could help NASA and commercial space companies understand the main source of constraint violations and allow them to create constraint rules that ensure the safe operation of future human private and exploration missions. Additional studies could be performed to evaluate other variables that could have influenced the scheduling violations that were analyzed.

  7. Scheduling lessons learned from the Autonomous Power System

    NASA Technical Reports Server (NTRS)

    Ringer, Mark J.

    1992-01-01

    The Autonomous Power System (APS) project at NASA LeRC is designed to demonstrate the applications of integrated intelligent diagnosis, control, and scheduling techniques to space power distribution systems. The project consists of three elements: the Autonomous Power Expert System (APEX) for Fault Diagnosis, Isolation, and Recovery (FDIR); the Autonomous Intelligent Power Scheduler (AIPS) to efficiently assign activities start times and resources; and power hardware (Brassboard) to emulate a space-based power system. The AIPS scheduler was tested within the APS system. This scheduler is able to efficiently assign available power to the requesting activities and share this information with other software agents within the APS system in order to implement the generated schedule. The AIPS scheduler is also able to cooperatively recover from fault situations by rescheduling the affected loads on the Brassboard in conjunction with the APEX FDIR system. AIPS served as a learning tool and an initial scheduling testbed for the integration of FDIR and automated scheduling systems. Many lessons were learned from the AIPS scheduler and are now being integrated into a new scheduler called SCRAP (Scheduler for Continuous Resource Allocation and Planning). This paper will service three purposes: an overview of the AIPS implementation, lessons learned from the AIPS scheduler, and a brief section on how these lessons are being applied to the new SCRAP scheduler.

  8. Implementation of self-scheduling in the poison center.

    PubMed

    Hauburger, N M

    1997-06-01

    Self-scheduling was introduced to our Poison Control Center (PCC) as an alternative method of scheduling. The traditional method of scheduling was becoming an overwhelming task for the managing director, and the specialists' individual needs were not adequately met. Therefore, self-scheduling was implemented to meet the needs of the PCC as well as create the feelings of empowerment and autonomy for the specialists. The staff was educated on the process of self-scheduling. This process involved assessing, planning, implementing and evaluating. Using the democratic process, guidelines were established for shift hours, shift rotation, weekends, vacation and holidays. The plan included assigning a specialist as "schedule mediator". The mediator was responsible for assessing the schedule for any over- or under-staffing and negotiating schedule changes between the specialists. When the schedule's gaps had been negotiated, the completed schedule was posted. Finally, the staff completed a questionnaire to evaluate self-scheduling. All of the specialists strongly agreed that there had been a positive outcome from implementing self-scheduling. Their comments included "enjoyed the flexibility in doing her own schedule" and "enjoyed the participating in the operation of the PCC".

  9. 17 CFR Schedule A to Part 286 - Schedule A to Part 286

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...) Schedule A to Part 285 GENERAL RULES AND REGULATIONS PURSUANT TO SECTION 11(a) OF THE INTER-AMERICAN... sales literature to be provided by the Bank or any of the principal underwriters for general use...

  10. 75 FR 14538 - Schedules of Controlled Substances: Placement of Carisoprodol Into Schedule IV; Announcement of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-26

    ... Federal Register (74 FR 59108) to place the substance carisoprodol into schedule IV of the Controlled... carisoprodol is being abused with other controlled drugs such as opioids. There are incidences of pain...

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

    SciTech Connect

    Cardoso, Goncalo; Stadler, Michael; Bozchalui, Mohammed C.; Sharma, Ratnesh; Marnay, Chris; Barbosa-Povoa, Ana; Ferrao, Paulo

    2013-12-06

    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.

  12. 49 CFR Schedule C to Subpart B of... - Schedule C to Subpart B of Part 1139

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... REVENUE PROCEEDINGS Intercity Bus Industry Pt. 1139, Subpt. B, Sch. C Schedule C to Subpart B of Part 1139... (h) 1. Passenger revenue L. 1 2. Special bus revenue L. 2 3. Baggage revenue L. 3 4. Mail revenue...

  13. 78 FR 17895 - Schedules of Controlled Substances: Placement of Alfaxalone into Schedule IV

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-25

    ... dependence or psychological dependence relative to the drugs or other substances in Schedule III. 21 U.S.C... models of anxiety, such as the elevated plus maze, the conflict test and restraint stress. In a...

  14. Projecting Future Scheduled Airline Demand, Schedules and NGATS Benefits Using TSAM

    NASA Technical Reports Server (NTRS)

    Dollyhigh, Samuel; Smith, Jeremy; Viken, Jeff; Trani, Antonio; Baik, Hojong; Hinze, Nickolas; Ashiabor, Senanu

    2006-01-01

    The Transportation Systems Analysis Model (TSAM) developed by Virginia Tech s Air Transportation Systems Lab and NASA Langley can provide detailed analysis of the effects on the demand for air travel of a full range of NASA and FAA aviation projects. TSAM has been used to project the passenger demand for very light jet (VLJ) air taxi service, scheduled airline demand growth and future schedules, Next Generation Air Transportation System (NGATS) benefits, and future passenger revenues for the Airport and Airway Trust Fund. TSAM can project the resulting demand when new vehicles and/or technology is inserted into the long distance (100 or more miles one-way) transportation system, as well as, changes in demand as a result of fare yield increases or decreases, airport transit times, scheduled flight times, ticket taxes, reductions or increases in flight delays, and so on. TSAM models all long distance travel in the contiguous U.S. and determines the mode choice of the traveler based on detailed trip costs, travel time, schedule frequency, purpose of the trip (business or non-business), and household income level of the traveler. Demand is modeled at the county level, with an airport choice module providing up to three airports as part of the mode choice. Future enplanements at airports can be projected for different scenarios. A Fratar algorithm and a schedule generator are applied to generate future flight schedules. This paper presents the application of TSAM to modeling future scheduled air passenger demand and resulting airline schedules, the impact of NGATS goals and objectives on passenger demand, along with projections for passenger fee receipts for several scenarios for the FAA Airport and Airway Trust Fund.

  15. OPPS - OEL PROJECT PLANNER/SCHEDULER

    NASA Technical Reports Server (NTRS)

    Murphy, S. C.

    1994-01-01

    OPPS is a window-based graphics tool that provides easy and fast on-screen WYSIWYG editing capabilities. It has a canvas area which displays a full image of the schedule being edited. The canvas contains a header area (for text) and a schedule area (for plotting graphic representations of milestone objects in a flexible timeline). The OPPS tool is object-oriented, but it is unique in its capability for creating objects that have date attributes. Each object on the screen can be treated as a unit for moving, editing, etc. There is a mouse interface for simple control of pointer location. The user can position objects to pixel resolution, but objects with an associated date are positioned automatically in their correct timeline position in the schedule area. The schedule area has horizontal lines across the page with capabilities for multiple pages and for editing the number of lines per page and the line grid. The text on a line can be edited and a line can be moved with all objects on the line moving with it. The timeline display can be edited to plot any time period in a variety of formats from Fiscal Year to Calendar Year and days to years. Text objects and image objects (rasterfiles and icons) can be created for placement anywhere on the page. Milestone event objects with a single associated date (and optional text and milestone symbol) and activity objects with start and end dates (and an optional completion date) have unique editing panels for entering data. A representation for schedule slips is also provided. A milestone schedule can be saved to an ASCII file on another computer to be read by OPPS. The program can also print a schedule to a PostScript file. This program is not intended to replace a commercial scheduling/project management program. It does not provide the capability for defining dependencies between activities; dates must be provided manually. However, because OPPS has an ASCII file interface it can be used in conjunction with a project

  16. 10 CFR 626.8 - Deferrals of contractually scheduled deliveries.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... PETROLEUM FOR THE STRATEGIC PETROLEUM RESERVE § 626.8 Deferrals of contractually scheduled deliveries. (a) General. (1) DOE prefers to take deliveries of petroleum for the SPR at times scheduled under...

  17. 10 CFR 626.8 - Deferrals of contractually scheduled deliveries.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... PETROLEUM FOR THE STRATEGIC PETROLEUM RESERVE § 626.8 Deferrals of contractually scheduled deliveries. (a) General. (1) DOE prefers to take deliveries of petroleum for the SPR at times scheduled under...

  18. 10 CFR 626.8 - Deferrals of contractually scheduled deliveries.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... PETROLEUM FOR THE STRATEGIC PETROLEUM RESERVE § 626.8 Deferrals of contractually scheduled deliveries. (a) General. (1) DOE prefers to take deliveries of petroleum for the SPR at times scheduled under...

  19. 10 CFR 626.8 - Deferrals of contractually scheduled deliveries.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... PETROLEUM FOR THE STRATEGIC PETROLEUM RESERVE § 626.8 Deferrals of contractually scheduled deliveries. (a) General. (1) DOE prefers to take deliveries of petroleum for the SPR at times scheduled under...

  20. Intelligent scheduling support for the US Coast Guard

    SciTech Connect

    Darby-Dowman, K.; Lucas, C.; Mitra, G.; Fink, R.; Kingsley, L.; Smith, J.W.

    1992-12-31

    This paper will discuss a joint effort by the U.S. Coast Guard Research & Development Center, Idaho National Engineering Laboratory and Brunel University to provide the necessary tools to increase the human scheduler`s capability to handle the scheduling process more efficiently and effectively. Automating the scheduling process required a system that could think independently of the scheduler, that is, the systems needed its own control mechanism and knowledge base. Further, automated schedule generation became a design requirement and sophisticated algorithms were formulated to solve a complex combinatorial problem. In short, the resulting design can be viewed as a hybrid knowledge-based mathematical programming application system. This document contains an overview of the integrated system, a discrete optimization model for scheduling, and schedule diagnosis and analysis.