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Sample records for frequency assignment problem

  1. Achieving spectrum conservation for the minimum-span and minimum-order frequency assignment problems

    NASA Technical Reports Server (NTRS)

    Heyward, Ann O.

    1992-01-01

    Effective and efficient solutions of frequency assignment problems assumes increasing importance as the radiofrequency spectrum experiences ever increasing utilization by diverse communications services, requiring that the most efficient use of this resource be achieved. The research presented explores a general approach to the frequency assignment problem, in which such problems are categorized by the appropriate spectrum conserving objective function, and are each treated as an N-job, M-machine scheduling problem appropriate for the objective. Results obtained and presented illustrate that such an approach presents an effective means of achieving spectrum conserving frequency assignments for communications systems in a variety of environments.

  2. Optimizing a realistic large-scale frequency assignment problem using a new parallel evolutionary approach

    NASA Astrophysics Data System (ADS)

    Chaves-González, José M.; Vega-Rodríguez, Miguel A.; Gómez-Pulido, Juan A.; Sánchez-Pérez, Juan M.

    2011-08-01

    This article analyses the use of a novel parallel evolutionary strategy to solve complex optimization problems. The work developed here has been focused on a relevant real-world problem from the telecommunication domain to verify the effectiveness of the approach. The problem, known as frequency assignment problem (FAP), basically consists of assigning a very small number of frequencies to a very large set of transceivers used in a cellular phone network. Real data FAP instances are very difficult to solve due to the NP-hard nature of the problem, therefore using an efficient parallel approach which makes the most of different evolutionary strategies can be considered as a good way to obtain high-quality solutions in short periods of time. Specifically, a parallel hyper-heuristic based on several meta-heuristics has been developed. After a complete experimental evaluation, results prove that the proposed approach obtains very high-quality solutions for the FAP and beats any other result published.

  3. Vibrational spectra of trimethylsilanol. The problem of the assignment of the SiOH group frequencies

    NASA Astrophysics Data System (ADS)

    Ignatyev, Igor S.; Partal, F.; López González, J. J.; Sundius, Tom

    2004-04-01

    The assignment of the SiOH group vibrations of trimethylsilanol, which is still controversial, is proposed. This assignment is based on theoretical B3LYP force field scaled using the constants of the (CH 3) 3Si group optimized to fit experimental vibrational frequencies of (CH 3) 3SiF and (CD 3) 3SiF molecules as well as the OH stretching scale factor from methanol. The ab initio force field defined in this way gives a good agreement of the theoretical vibrational frequencies of trimethylsilanol with the positions of IR and Raman bands observed in the gas phase. This force field predicts the greatest contribution of the δ SiOH coordinates to the vibration with frequency of 804 cm -1. The elimination of the coupling of the SiOH deformation with methyl rocking modes by the normal coordinate treatment of (CD 3) 3SiOH gives 832 cm -1 for silanol deformation which is in a good agreement with the 834 cm -1 value proposed earlier for the bending mode of free silanol groups. The geometry and force field of the open chain H 3SiOH trimer is computed to model the change of the δ SiOH frequencies upon formation of the hydrogen-bonded polymers. This model predicts a significant shift of SiOH bending frequencies to the 1000-1200 cm -1 range while those of SiOD to the 800-850 cm -1 range. These predictions allow us to ascribe the 1087 cm -1 band observed in the IR spectrum of crystalline (CH 3) 3SiOH and the Raman 775 cm -1 band of the liquid (CH 3) 3SiOD to deformations of the hydrogen-bonded silanol groups.

  4. 47 CFR 74.802 - Frequency assignment.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 4 2012-10-01 2012-10-01 false Frequency assignment. 74.802 Section 74.802... Frequency assignment. (a) Frequencies within the following bands may be assigned for use by low power... MHz. All zones 113 km (70 miles) (c) Specific frequency operation is required when operating...

  5. 47 CFR 74.802 - Frequency assignment.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 4 2014-10-01 2014-10-01 false Frequency assignment. 74.802 Section 74.802... Frequency assignment. (a) Frequencies within the following bands may be assigned for use by low power... MHz. All zones 113 km (70 miles) (c) Specific frequency operation is required when operating...

  6. 47 CFR 74.802 - Frequency assignment.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Frequency assignment. 74.802 Section 74.802... Frequency assignment. (a) Frequencies within the following bands may be assigned for use by low power... MHz. All zones 113 km (70 miles) (c) Specific frequency operation is required when operating...

  7. 47 CFR 74.802 - Frequency assignment.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 4 2013-10-01 2013-10-01 false Frequency assignment. 74.802 Section 74.802... Frequency assignment. (a) Frequencies within the following bands may be assigned for use by low power... MHz. All zones 113 km (70 miles) (c) Specific frequency operation is required when operating...

  8. 47 CFR 80.509 - Frequency assignment.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 5 2013-10-01 2013-10-01 false Frequency assignment. 80.509 Section 80.509... MARITIME SERVICES Private Coast Stations and Marine Utility Stations § 80.509 Frequency assignment. Frequencies assignable to private coast stations and marine utility stations are listed in subpart H....

  9. 47 CFR 80.509 - Frequency assignment.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Frequency assignment. 80.509 Section 80.509... MARITIME SERVICES Private Coast Stations and Marine Utility Stations § 80.509 Frequency assignment. Frequencies assignable to private coast stations and marine utility stations are listed in subpart H....

  10. 47 CFR 80.509 - Frequency assignment.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Frequency assignment. 80.509 Section 80.509... MARITIME SERVICES Private Coast Stations and Marine Utility Stations § 80.509 Frequency assignment. Frequencies assignable to private coast stations and marine utility stations are listed in subpart H....

  11. 47 CFR 80.509 - Frequency assignment.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Frequency assignment. 80.509 Section 80.509... MARITIME SERVICES Private Coast Stations and Marine Utility Stations § 80.509 Frequency assignment. Frequencies assignable to private coast stations and marine utility stations are listed in subpart H....

  12. 47 CFR 80.509 - Frequency assignment.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Frequency assignment. 80.509 Section 80.509... MARITIME SERVICES Private Coast Stations and Marine Utility Stations § 80.509 Frequency assignment. Frequencies assignable to private coast stations and marine utility stations are listed in subpart H....

  13. 47 CFR 74.103 - Frequency assignment.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Frequency assignment. 74.103 Section 74.103....103 Frequency assignment. (a) Frequencies allocated to broadcasting and the various categories of auxiliary stations, in the FCC's Table of Frequency Allocations (Part 2 of this chapter), may be...

  14. 47 CFR 74.402 - Frequency assignment.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 4 2011-10-01 2011-10-01 false Frequency assignment. 74.402 Section 74.402....402 Frequency assignment. Operation on all channels listed in this section (except: frequencies 26.07 MHz, 26.11 MHz, and 26.45 MHz, and frequencies listed in paragraphs (a)(4) and (c)(1) of this...

  15. 47 CFR 74.103 - Frequency assignment.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 4 2011-10-01 2011-10-01 false Frequency assignment. 74.103 Section 74.103....103 Frequency assignment. (a) Frequencies allocated to broadcasting and the various categories of auxiliary stations, in the FCC's Table of Frequency Allocations (Part 2 of this chapter), may be...

  16. 47 CFR 74.402 - Frequency assignment.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Frequency assignment. 74.402 Section 74.402....402 Frequency assignment. Operation on all channels listed in this section (except: frequencies 26.07 MHz, 26.11 MHz, and 26.45 MHz, and frequencies listed in paragraphs (a)(4) and (c)(1) of this...

  17. 47 CFR 74.402 - Frequency assignment.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 4 2014-10-01 2014-10-01 false Frequency assignment. 74.402 Section 74.402....402 Frequency assignment. Operation on all channels listed in this section (except: frequencies 26.07 MHz, 26.11 MHz, and 26.45 MHz, and frequencies listed in paragraphs (a)(4) and (c)(1) of this...

  18. 47 CFR 74.402 - Frequency assignment.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 4 2013-10-01 2013-10-01 false Frequency assignment. 74.402 Section 74.402....402 Frequency assignment. Operation on all channels listed in this section (except: frequencies 26.07 MHz, 26.11 MHz, and 26.45 MHz, and frequencies listed in paragraphs (a)(4) and (c)(1) of this...

  19. 47 CFR 74.103 - Frequency assignment.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 4 2012-10-01 2012-10-01 false Frequency assignment. 74.103 Section 74.103....103 Frequency assignment. (a) Frequencies allocated to broadcasting and the various categories of auxiliary stations, in the FCC's Table of Frequency Allocations (Part 2 of this chapter), may be...

  20. 47 CFR 74.402 - Frequency assignment.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 4 2012-10-01 2012-10-01 false Frequency assignment. 74.402 Section 74.402....402 Frequency assignment. Operation on all channels listed in this section (except: frequencies 26.07 MHz, 26.11 MHz, and 26.45 MHz, and frequencies listed in paragraphs (a)(4) and (c)(1) of this...

  1. 33 CFR 401.61 - Assigned frequencies.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 3 2013-07-01 2013-07-01 false Assigned frequencies. 401.61 Section 401.61 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT... frequencies. The Seaway stations operate on the following assigned VHF frequencies: 156.8 MHz—(channel...

  2. 33 CFR 401.61 - Assigned frequencies.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Assigned frequencies. 401.61 Section 401.61 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT... frequencies. The Seaway stations operate on the following assigned VHF frequencies: 156.8 MHz—(channel...

  3. 33 CFR 401.61 - Assigned frequencies.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 3 2014-07-01 2014-07-01 false Assigned frequencies. 401.61 Section 401.61 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT... frequencies. The Seaway stations operate on the following assigned VHF frequencies: 156.8 MHz—(channel...

  4. 47 CFR 74.1202 - Frequency assignment.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 4 2012-10-01 2012-10-01 false Frequency assignment. 74.1202 Section 74.1202... FM Broadcast Booster Stations § 74.1202 Frequency assignment. (a) An applicant for a new FM broadcast... stations. The application must be specific with regard to the frequency requested. Only one output...

  5. 47 CFR 74.502 - Frequency assignment.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Frequency assignment. 74.502 Section 74.502... § 74.502 Frequency assignment. (a) Except as provided in NG30, broadcast auxiliary stations licensed as... Frequency Allocations. These stations will be protected from possible interference caused by new users...

  6. 47 CFR 74.1202 - Frequency assignment.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 4 2011-10-01 2011-10-01 false Frequency assignment. 74.1202 Section 74.1202... FM Broadcast Booster Stations § 74.1202 Frequency assignment. (a) An applicant for a new FM broadcast... stations. The application must be specific with regard to the frequency requested. Only one output...

  7. 47 CFR 74.1202 - Frequency assignment.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Frequency assignment. 74.1202 Section 74.1202... FM Broadcast Booster Stations § 74.1202 Frequency assignment. (a) An applicant for a new FM broadcast... stations. The application must be specific with regard to the frequency requested. Only one output...

  8. 47 CFR 74.502 - Frequency assignment.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 4 2014-10-01 2014-10-01 false Frequency assignment. 74.502 Section 74.502... § 74.502 Frequency assignment. (a) Except as provided in NG30, broadcast auxiliary stations licensed as... Frequency Allocations. These stations will be protected from possible interference caused by new users...

  9. 33 CFR 401.61 - Assigned frequencies.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 3 2011-07-01 2011-07-01 false Assigned frequencies. 401.61 Section 401.61 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT... frequencies. The Seaway stations operate on the following assigned VHF frequencies: 156.8 MHz—(channel...

  10. 47 CFR 74.1202 - Frequency assignment.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 4 2014-10-01 2014-10-01 false Frequency assignment. 74.1202 Section 74.1202... FM Broadcast Booster Stations § 74.1202 Frequency assignment. (a) An applicant for a new FM broadcast... stations. The application must be specific with regard to the frequency requested. Only one output...

  11. 47 CFR 74.502 - Frequency assignment.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 4 2013-10-01 2013-10-01 false Frequency assignment. 74.502 Section 74.502... § 74.502 Frequency assignment. (a) Except as provided in NG30, broadcast auxiliary stations licensed as... Frequency Allocations. These stations will be protected from possible interference caused by new users...

  12. 47 CFR 74.1202 - Frequency assignment.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 4 2013-10-01 2013-10-01 false Frequency assignment. 74.1202 Section 74.1202... FM Broadcast Booster Stations § 74.1202 Frequency assignment. (a) An applicant for a new FM broadcast... stations. The application must be specific with regard to the frequency requested. Only one output...

  13. 33 CFR 401.61 - Assigned frequencies.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 3 2012-07-01 2012-07-01 false Assigned frequencies. 401.61 Section 401.61 Navigation and Navigable Waters SAINT LAWRENCE SEAWAY DEVELOPMENT CORPORATION, DEPARTMENT... frequencies. The Seaway stations operate on the following assigned VHF frequencies: 156.8 MHz—(channel...

  14. 47 CFR 78.18 - Frequency assignments.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... channel. Editorial Note: For Federal Register citations affecting § 78.18, see the List of CFR Sections... 47 Telecommunication 4 2014-10-01 2014-10-01 false Frequency assignments. 78.18 Section 78.18... SERVICE Applications and Licenses § 78.18 Frequency assignments. (a) The Cable Television Relay Service...

  15. 47 CFR 78.18 - Frequency assignments.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... channel. Editorial Note: For Federal Register citations affecting § 78.18, see the List of CFR Sections... 47 Telecommunication 4 2013-10-01 2013-10-01 false Frequency assignments. 78.18 Section 78.18... SERVICE Applications and Licenses § 78.18 Frequency assignments. (a) The Cable Television Relay Service...

  16. 47 CFR 78.18 - Frequency assignments.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ....25 GHz band must demonstrate that the applicant has exhausted all spectrum available to it in the 12... assigned the band of frequencies from 12.70 to 13.20 GHz. This band is shared with the Fixed-Satellite... narrow band signals. Group D Channels Designation Channel boundaries (GHz) Alternate channel...

  17. 47 CFR 78.18 - Frequency assignments.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ....25 GHz band must demonstrate that the applicant has exhausted all spectrum available to it in the 12... assigned the band of frequencies from 12.70 to 13.20 GHz. This band is shared with the Fixed-Satellite... narrow band signals. Group D Channels Designation Channel boundaries (GHz) Alternate channel...

  18. Absolute Points for Multiple Assignment Problems

    ERIC Educational Resources Information Center

    Adlakha, V.; Kowalski, K.

    2006-01-01

    An algorithm is presented to solve multiple assignment problems in which a cost is incurred only when an assignment is made at a given cell. The proposed method recursively searches for single/group absolute points to identify cells that must be loaded in any optimal solution. Unlike other methods, the first solution is the optimal solution. The…

  19. Optimum frequency assignment for satellite SCPC systems

    NASA Astrophysics Data System (ADS)

    Okinaka, H.; Yasuda, Y.; Hirata, Y.

    A technique for deriving a quasi-optimum solution for IM-minimum channel allocation for single-level SCPC systems is presented. Two types of IM products are considered as the dominant components in an RF band. The third order IM product is proportional to the product of the power of concerned carriers, allowing a weighting function to be defined for calculating the IM noise. An IM minimum channel allocation technique can then be used to reduce the IM noise occurring in the carrier slots through frequency assignment. The worst carrier is automatically deleted with an initial channel allocation and the process is iterated until the maximum noise reduction is obtained. The first two or three carriers are assigned to unused frequency slots with low noise. The method is also viable when dealing with a larger number of carriers.

  20. The Airport Gate Assignment Problem: A Survey

    PubMed Central

    Ghaleb, Mageed A.; Salem, Ahmed M.

    2014-01-01

    The airport gate assignment problem (AGAP) is one of the most important problems operations managers face daily. Many researches have been done to solve this problem and tackle its complexity. The objective of the task is assigning each flight (aircraft) to an available gate while maximizing both conveniences to passengers and the operational efficiency of airport. This objective requires a solution that provides the ability to change and update the gate assignment data on a real time basis. In this paper, we survey the state of the art of these problems and the various methods to obtain the solution. Our survey covers both theoretical and real AGAP with the description of mathematical formulations and resolution methods such as exact algorithms, heuristic algorithms, and metaheuristic algorithms. We also provide a research trend that can inspire researchers about new problems in this area. PMID:25506074

  1. Unifying Temporal and Structural Credit Assignment Problems

    NASA Technical Reports Server (NTRS)

    Agogino, Adrian K.; Tumer, Kagan

    2004-01-01

    Single-agent reinforcement learners in time-extended domains and multi-agent systems share a common dilemma known as the credit assignment problem. Multi-agent systems have the structural credit assignment problem of determining the contributions of a particular agent to a common task. Instead, time-extended single-agent systems have the temporal credit assignment problem of determining the contribution of a particular action to the quality of the full sequence of actions. Traditionally these two problems are considered different and are handled in separate ways. In this article we show how these two forms of the credit assignment problem are equivalent. In this unified frame-work, a single-agent Markov decision process can be broken down into a single-time-step multi-agent process. Furthermore we show that Monte-Carlo estimation or Q-learning (depending on whether the values of resulting actions in the episode are known at the time of learning) are equivalent to different agent utility functions in a multi-agent system. This equivalence shows how an often neglected issue in multi-agent systems is equivalent to a well-known deficiency in multi-time-step learning and lays the basis for solving time-extended multi-agent problems, where both credit assignment problems are present.

  2. A multistage linear array assignment problem

    NASA Technical Reports Server (NTRS)

    Nicol, David M.; Shier, D. R.; Kincaid, R. K.; Richards, D. S.

    1988-01-01

    The implementation of certain algorithms on parallel processing computing architectures can involve partitioning contiguous elements into a fixed number of groups, each of which is to be handled by a single processor. It is desired to find an assignment of elements to processors that minimizes the sum of the maximum workloads experienced at each stage. This problem can be viewed as a multi-objective network optimization problem. Polynomially-bounded algorithms are developed for the case of two stages, whereas the associated decision problem (for an arbitrary number of stages) is shown to be NP-complete. Heuristic procedures are therefore proposed and analyzed for the general problem. Computational experience with one of the exact problems, incorporating certain pruning rules, is presented with one of the exact problems. Empirical results also demonstrate that one of the heuristic procedures is especially effective in practice.

  3. The generalized pole assignment problem. [dynamic output feedback control systems

    NASA Technical Reports Server (NTRS)

    Djaferis, T. E.; Mitter, S. K.

    1979-01-01

    For some linear, strictly proper system given by its transfer function, two dynamic output feedback problems can be posed. The first one is that of using dynamic-output feedback to assign the closed-loop characteristic polynomial and the second that of assigning the closed-loop invariant factors. These problems and their interrelationships are discussed. The formulation is done in the frequency domain and the investigation carried out from an algebraic point of view, in terms of linear equations over rings of polynomials. Using the notion of genericity, several necessary and sufficient conditions are expressed.

  4. Solving multiconstraint assignment problems using learning automata.

    PubMed

    Horn, Geir; Oommen, B John

    2010-02-01

    This paper considers the NP-hard problem of object assignment with respect to multiple constraints: assigning a set of elements (or objects) into mutually exclusive classes (or groups), where the elements which are "similar" to each other are hopefully located in the same class. The literature reports solutions in which the similarity constraint consists of a single index that is inappropriate for the type of multiconstraint problems considered here and where the constraints could simultaneously be contradictory. This feature, where we permit possibly contradictory constraints, distinguishes this paper from the state of the art. Indeed, we are aware of no learning automata (or other heuristic) solutions which solve this problem in its most general setting. Such a scenario is illustrated with the static mapping problem, which consists of distributing the processes of a parallel application onto a set of computing nodes. This is a classical and yet very important problem within the areas of parallel computing, grid computing, and cloud computing. We have developed four learning-automata (LA)-based algorithms to solve this problem: First, a fixed-structure stochastic automata algorithm is presented, where the processes try to form pairs to go onto the same node. This algorithm solves the problem, although it requires some centralized coordination. As it is desirable to avoid centralized control, we subsequently present three different variable-structure stochastic automata (VSSA) algorithms, which have superior partitioning properties in certain settings, although they forfeit some of the scalability features of the fixed-structure algorithm. All three VSSA algorithms model the processes as automata having first the hosting nodes as possible actions; second, the processes as possible actions; and, third, attempting to estimate the process communication digraph prior to probabilistically mapping the processes. This paper, which, we believe, comprehensively reports the

  5. Approximate algorithms for partitioning and assignment problems

    NASA Technical Reports Server (NTRS)

    Iqbal, M. A.

    1986-01-01

    The problem of optimally assigning the modules of a parallel/pipelined program over the processors of a multiple computer system under certain restrictions on the interconnection structure of the program as well as the multiple computer system was considered. For a variety of such programs it is possible to find linear time if a partition of the program exists in which the load on any processor is within a certain bound. This method, when combined with a binary search over a finite range, provides an approximate solution to the partitioning problem. The specific problems considered were: a chain structured parallel program over a chain-like computer system, multiple chain-like programs over a host-satellite system, and a tree structured parallel program over a host-satellite system. For a problem with m modules and n processors, the complexity of the algorithm is no worse than O(mnlog(W sub T/epsilon)), where W sub T is the cost of assigning all modules to one processor and epsilon the desired accuracy.

  6. 47 CFR 2.102 - Assignment of frequencies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... frequency band not exclusively allocated to the passive services (including the radio astronomy service). (4... Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL FREQUENCY ALLOCATIONS AND RADIO TREATY MATTERS; GENERAL RULES AND REGULATIONS Allocation, Assignment, and Use of Radio Frequencies § 2.102 Assignment...

  7. 47 CFR 2.102 - Assignment of frequencies.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... frequency band not exclusively allocated to the passive services (including the radio astronomy service). (4... Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL FREQUENCY ALLOCATIONS AND RADIO TREATY MATTERS; GENERAL RULES AND REGULATIONS Allocation, Assignment, and Use of Radio Frequencies § 2.102 Assignment...

  8. 47 CFR 2.102 - Assignment of frequencies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... (including the radio astronomy service). (4) In the event a band is reallocated so as to delete its... Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL FREQUENCY ALLOCATIONS AND RADIO TREATY MATTERS; GENERAL RULES AND REGULATIONS Allocation, Assignment, and Use of Radio Frequencies § 2.102 Assignment...

  9. The generalized pole assignment problem. [dynamic output feedback problems

    NASA Technical Reports Server (NTRS)

    Djaferis, T. E.; Mitter, S. K.

    1979-01-01

    Two dynamic output feedback problems for a linear, strictly proper system are considered, along with their interrelationships. The problems are formulated in the frequency domain and investigated in terms of linear equations over rings of polynomials. Necessary and sufficient conditions are expressed using genericity.

  10. 47 CFR 2.102 - Assignment of frequencies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... frequencies. (a) Except as otherwise provided in this section, the assignment of frequencies and bands of... authorized the use of any frequency or frequency band not exclusively allocated to the passive services (including the radio astronomy service). (4) In the event a band is reallocated so as to delete...

  11. 47 CFR 2.102 - Assignment of frequencies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... frequencies. (a) Except as otherwise provided in this section, the assignment of frequencies and bands of... authorized the use of any frequency or frequency band not exclusively allocated to the passive services (including the radio astronomy service). (4) In the event a band is reallocated so as to delete...

  12. 47 CFR 101.147 - Frequency assignments.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... MHz may be authorized on a case-by-case basis to Government or non-Government space research earth stations for telecommand purposes in connection with deep space research. (8) This frequency band is shared... segments 10.95-11.2 and 11.45-11.7 GHz are shared with space stations (space to earth) in the...

  13. 47 CFR 101.147 - Frequency assignments.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...-case basis to Government or non-Government space research earth stations for telecommand purposes in connection with deep space research. (8) This frequency band is shared with station(s) in the Local... shared with space stations (space to earth) in the fixed-satellite service. (10) This band is...

  14. 47 CFR 101.147 - Frequency assignments.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ...-case basis to Government or non-Government space research earth stations for telecommand purposes in connection with deep space research. (8) This frequency band is shared with station(s) in the Local... shared with space stations (space to earth) in the fixed-satellite service. (10) This band is...

  15. 47 CFR 101.147 - Frequency assignments.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... MHz may be authorized on a case-by-case basis to Government or non-Government space research earth stations for telecommand purposes in connection with deep space research. (8) This frequency band is shared... segments 10.95-11.2 and 11.45-11.7 GHz are shared with space stations (space to earth) in the...

  16. Behavior of 1 Ω resistors at frequencies below 1 Hz and the problem of assigning a dc value

    NASA Astrophysics Data System (ADS)

    Fletcher, Nick; Götz, Martin; Rolland, Benjamin; Pesel, Eckart

    2015-08-01

    This paper presents a systematic study of the effects of reversals of current polarity on 1 Ω standard resistors. A selection of 1 Ω standards were measured on a dc cryogenic current comparator bridge and also on an ac current comparator bridge operating at 1 Hz. We find that the apparent 4 terminal resistance depends strongly on the dc reversal rate, in one case showing a variation of more than 0.1 μΩ/Ω for cycle times between 10 s and 1000 s. Even in the best cases, effects of at least 0.01 μΩ/Ω are present. Furthermore, the assumption that the apparent resistance value converges to a limiting value for long waiting times after reversal is not always upheld, making it difficult to quote a simple dc value. Existing models of Peltier heating at wire junctions do not completely explain our observations. The problems presented have been the limiting factor for 1 Ω measurements as part of a recent on-site comparison of quantum Hall effect resistance standards.

  17. 47 CFR 73.702 - Assignment and use of frequencies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... begin testing in the following season. (e) Within 14 days after the end of each season, a report shall... authorized to all licensees of international broadcasting stations during any one day for any season is 100...) Frequencies will be assigned by the Commission prior to the start of each season to authorized...

  18. 47 CFR 73.702 - Assignment and use of frequencies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... begin testing in the following season. (e) Within 14 days after the end of each season, a report shall... authorized to all licensees of international broadcasting stations during any one day for any season is 100...) Frequencies will be assigned by the Commission prior to the start of each season to authorized...

  19. 47 CFR 80.1177 - Assignment and use of frequencies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Assignment and use of frequencies. 80.1177 Section 80.1177 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES STATIONS IN THE MARITIME SERVICES Voluntary Radio Installations On-Board Communications §...

  20. Solution of the determinantal assignment problem using the Grassmann matrices

    NASA Astrophysics Data System (ADS)

    Karcanias, Nicos; Leventides, John

    2016-02-01

    The paper provides a direct solution to the determinantal assignment problem (DAP) which unifies all frequency assignment problems of the linear control theory. The current approach is based on the solvability of the exterior equation ? where ? is an n -dimensional vector space over ? which is an integral part of the solution of DAP. New criteria for existence of solution and their computation based on the properties of structured matrices are referred to as Grassmann matrices. The solvability of this exterior equation is referred to as decomposability of ?, and it is in turn characterised by the set of quadratic Plücker relations (QPRs) describing the Grassmann variety of the corresponding projective space. Alternative new tests for decomposability of the multi-vector ? are given in terms of the rank properties of the Grassmann matrix, ? of the vector ?, which is constructed by the coordinates of ?. It is shown that the exterior equation is solvable (? is decomposable), if and only if ? where ?; the solution space for a decomposable ?, is the space ?. This provides an alternative linear algebra characterisation of the decomposability problem and of the Grassmann variety to that defined by the QPRs. Further properties of the Grassmann matrices are explored by defining the Hodge-Grassmann matrix as the dual of the Grassmann matrix. The connections of the Hodge-Grassmann matrix to the solution of exterior equations are examined, and an alternative new characterisation of decomposability is given in terms of the dimension of its image space. The framework based on the Grassmann matrices provides the means for the development of a new computational method for the solutions of the exact DAP (when such solutions exist), as well as computing approximate solutions, when exact solutions do not exist.

  1. A hybrid hopfield network-simulated annealing approach for frequency assignment in satellite communications systems.

    PubMed

    Salcedo-Sanz, Sancho; Santiago-Mozos, Ricardo; Bousoño-Calzón, Carlos

    2004-04-01

    A hybrid Hopfield network-simulated annealing algorithm (HopSA) is presented for the frequency assignment problem (FAP) in satellite communications. The goal of this NP-complete problem is minimizing the cochannel interference between satellite communication systems by rearranging the frequency assignment, for the systems can accommodate the increasing demands. The HopSA algorithm consists of a fast digital Hopfield neural network which manages the problem constraints hybridized with a simulated annealing which improves the quality of the solutions obtained. We analyze the problem and its formulation, describing and discussing the HopSA algorithm and solving a set of benchmark problems. The results obtained are compared with other existing approaches in order to show the performance of the HopSA approach.

  2. A Linear Programming Solution to the Faculty Assignment Problem

    ERIC Educational Resources Information Center

    Breslaw, Jon A.

    1976-01-01

    Investigates the problem of assigning faculty to courses at a university. A program is developed that is both efficient, in that integer programming is not required, and effective, in that it facilitates interaction by administration in determining the optimal solution. The results of some empirical tests are also reported. (Author)

  3. Locomotive assignment problem with train precedence using genetic algorithm

    NASA Astrophysics Data System (ADS)

    Noori, Siamak; Ghannadpour, Seyed Farid

    2012-07-01

    This paper aims to study the locomotive assignment problem which is very important for railway companies, in view of high cost of operating locomotives. This problem is to determine the minimum cost assignment of homogeneous locomotives located in some central depots to a set of pre-scheduled trains in order to provide sufficient power to pull the trains from their origins to their destinations. These trains have different degrees of priority for servicing, and the high class of trains should be serviced earlier than others. This problem is modeled using vehicle routing and scheduling problem where trains representing the customers are supposed to be serviced in pre-specified hard/soft fuzzy time windows. A two-phase approach is used which, in the first phase, the multi-depot locomotive assignment is converted to a set of single depot problems, and after that, each single depot problem is solved heuristically by a hybrid genetic algorithm. In the genetic algorithm, various heuristics and efficient operators are used in the evolutionary search. The suggested algorithm is applied to solve the medium sized numerical example to check capabilities of the model and algorithm. Moreover, some of the results are compared with those solutions produced by branch-and-bound technique to determine validity and quality of the model. Results show that suggested approach is rather effective in respect of quality and time.

  4. Web-Based Problem-Solving Assignment and Grading System

    NASA Astrophysics Data System (ADS)

    Brereton, Giles; Rosenberg, Ronald

    2014-11-01

    In engineering courses with very specific learning objectives, such as fluid mechanics and thermodynamics, it is conventional to reinforce concepts and principles with problem-solving assignments and to measure success in problem solving as an indicator of student achievement. While the modern-day ease of copying and searching for online solutions can undermine the value of traditional assignments, web-based technologies also provide opportunities to generate individualized well-posed problems with an infinite number of different combinations of initial/final/boundary conditions, so that the probability of any two students being assigned identical problems in a course is vanishingly small. Such problems can be designed and programmed to be: single or multiple-step, self-grading, allow students single or multiple attempts; provide feedback when incorrect; selectable according to difficulty; incorporated within gaming packages; etc. In this talk, we discuss the use of a homework/exam generating program of this kind in a single-semester course, within a web-based client-server system that ensures secure operation.

  5. A polyhedral approach to a constrained assignment problem

    SciTech Connect

    Hefner, A.; Kleinschmidt, P.

    1994-12-31

    We consider the following problem (called the Master/Slave-Matching Problem): Given an undirected bipartite graph G(V, E) with bipartition V = W {union} U and a digraph D = (U, A). A Master/Slave-matching in G is a matching in G such that for every arc (u, v) {element_of} A the node v is matched whenever the node u is matched. The problem is, to find a Master/Slave-matching of maximum cardinality. The motivation for the study of this problem arises from the area of manpower scheduling where one tries to assign workers to jobs such that the assigned jobs satisfy certain dependence constraints. Let k be the maximum size of a (weakly) connected component of D. First we show that the problem is NP-hard and remains NP-hard even if k = 3. Second we focus on the case k = 2: We use polyhedral combinatorics to establish a min-max equation which well-characterizes the cardinality of a maximum Master/Slave-matching. This equation can be viewed as a generalization of Konig`s min-max theorem. Finally, we show (for k = 2) how the weighted Master/Slave-Matching Problem (where every edge e {element_of} E has a nonnegative weight) can be transformed to the (non-bipartite) weighted Matching Problem.

  6. Restart-Based Genetic Algorithm for the Quadratic Assignment Problem

    NASA Astrophysics Data System (ADS)

    Misevicius, Alfonsas

    The power of genetic algorithms (GAs) has been demonstrated for various domains of the computer science, including combinatorial optimization. In this paper, we propose a new conceptual modification of the genetic algorithm entitled a "restart-based genetic algorithm" (RGA). An effective implementation of RGA for a well-known combinatorial optimization problem, the quadratic assignment problem (QAP), is discussed. The results obtained from the computational experiments on the QAP instances from the publicly available library QAPLIB show excellent performance of RGA. This is especially true for the real-life like QAPs.

  7. Principles for problem aggregation and assignment in medium scale multiprocessors

    NASA Technical Reports Server (NTRS)

    Nicol, David M.; Saltz, Joel H.

    1987-01-01

    One of the most important issues in parallel processing is the mapping of workload to processors. This paper considers a large class of problems having a high degree of potential fine grained parallelism, and execution requirements that are either not predictable, or are too costly to predict. The main issues in mapping such a problem onto medium scale multiprocessors are those of aggregation and assignment. We study a method of parameterized aggregation that makes few assumptions about the workload. The mapping of aggregate units of work onto processors is uniform, and exploits locality of workload intensity to balance the unknown workload. In general, a finer aggregate granularity leads to a better balance at the price of increased communication/synchronization costs; the aggregation parameters can be adjusted to find a reasonable granularity. The effectiveness of this scheme is demonstrated on three model problems: an adaptive one-dimensional fluid dynamics problem with message passing, a sparse triangular linear system solver on both a shared memory and a message-passing machine, and a two-dimensional time-driven battlefield simulation employing message passing. Using the model problems, the tradeoffs are studied between balanced workload and the communication/synchronization costs. Finally, an analytical model is used to explain why the method balances workload and minimizes the variance in system behavior.

  8. Assignment Algorithms For The Passive Sensor Data Association Problem

    NASA Astrophysics Data System (ADS)

    Deb, Somnath; Pattipati, Krishna R.; Bar-Shalom, Yaakov; Washburn, Robert B.

    1989-09-01

    This paper is concerned with the problem of associating measurements from multiple passive line-of-sight only sensors in the presence of clutter, missed detections and unknown number of targets. The measurement-target association problem is formulated as one of maximizing the joint likelihood function of the measurement partition. Mathematically, this formulation of the data association problem leads to a generalization of the multi-dimensional matching problem, which is known to be NP-complete ( of non polynomial complexity ) when the number of sensors S >= 3. Suboptimal algorithms are therefore of considerable importance. In this paper we present two suboptimal algorithms - a backtracking algorithm with a complexity of order 0(M in M), where M is the number of possible measurement-target associations, and a relaxation algorithm that successively solves a series of generalized two-dimensional assignment problems, with the worst case complexity of 0(3k n3 ), where n is the number of reports from each sensor, and k is the number of relaxation iterations. The performance of the backtracking algorithm is guaranteed to be much better than the "row-column" heuristic, which has complexity of 0(M). A nice feature of the relaxation approach is that the resulting primal and dual solutions provide a measure of how close the solution is to the (perhaps unknowable) optimal solution in terms of the duality gap. For the passive sensor data association problem, the duality gaps are typically less than 1%. We present comparisons between the two algorithms in terms of performance and time complexity in the context of passive sensor data-association problem involving three sensors. Both of the algorithms are tested on a wide variety of scenarios involving a wide range of target densities, measurement accuracy, and false alarm and missed-detection probabilities.

  9. Neural-network dedicated processor for solving competitive assignment problems

    NASA Technical Reports Server (NTRS)

    Eberhardt, Silvio P. (Inventor)

    1993-01-01

    A neural-network processor for solving first-order competitive assignment problems consists of a matrix of N x M processing units, each of which corresponds to the pairing of a first number of elements of (R sub i) with a second number of elements (C sub j), wherein limits of the first number are programmed in row control superneurons, and limits of the second number are programmed in column superneurons as MIN and MAX values. The cost (weight) W sub ij of the pairings is programmed separately into each PU. For each row and column of PU's, a dedicated constraint superneuron insures that the number of active neurons within the associated row or column fall within a specified range. Annealing is provided by gradually increasing the PU gain for each row and column or increasing positive feedback to each PU, the latter being effective to increase hysteresis of each PU or by combining both of these techniques.

  10. Planning Nurses in Maternity Care: a Stochastic Assignment Problem

    NASA Astrophysics Data System (ADS)

    Phillipson, Frank

    2015-05-01

    With 23 percent of all births taking place at home, The Netherlands have the highest rate of home births in the world. Also if the birth did not take place at home, it is not unusual for the mother and child to be out of hospital in a few hours after the baby was born. The explanation for both is the very well organised maternity care system. However, getting the right maternity care nurse available on time introduces a complex planning issue that can be recognized as a Stochastic Assignment Problem. In this paper an expert rule based approach is combined with scenario analysis to support the planner of the maternity care agency in his work.

  11. Massively parallel solution of the assignment problem. Technical report

    SciTech Connect

    Wein, J.; Zenios, S.

    1990-12-01

    In this paper we discuss the design, implementation and effectiveness of massively parallel algorithms for the solution of large-scale assignment problems. In particular, we study the auction algorithms of Bertsekas, an algorithm based on the method of multipliers of Hestenes and Powell, and an algorithm based on the alternating direction method of multipliers of Eckstein. We discuss alternative approaches to the massively parallel implementation of the auction algorithm, including Jacobi, Gauss-Seidel and a hybrid scheme. The hybrid scheme, in particular, exploits two different levels of parallelism and an efficient way of communicating the data between them without the need to perform general router operations across the hypercube network. We then study the performance of massively parallel implementations of two methods of multipliers. Implementations are carried out on the Connection Machine CM-2, and the algorithms are evaluated empirically with the solution of large scale problems. The hybrid scheme significantly outperforms all of the other methods and gives the best computational results to date for a massively parallel solution to this problem.

  12. 47 CFR 90.173 - Policies governing the assignment of frequencies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Policies governing the assignment of frequencies. 90.173 Section 90.173 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES PRIVATE LAND MOBILE RADIO SERVICES Policies Governing the Assignment of Frequencies § 90.173 Policies governing the...

  13. Assignment of circadian function for the Neurospora clock gene frequency.

    PubMed

    Merrow, M; Brunner, M; Roenneberg, T

    1999-06-10

    Circadian clocks consist of three elements: entrainment pathways (inputs), the mechanism generating the rhythmicity (oscillator), and the output pathways that control the circadian rhythms. It is difficult to assign molecular clock components to any one of these elements. Experiments show that inputs can be circadianly regulated and outputs can feed back on the oscillator. Mathematical simulations indicate that under- or overexpression of a gene product can result in arrhythmicity, whether the protein is part of the oscillator or substantially part of a rhythmically expressed input pathway. To distinguish between these two possibilities, we used traditional circadian entrainment protocols on a genetic model system, Neurospora crassa.

  14. Effect of frequency boundary assignment on speech recognition with the Nucleus 24 ACE speech coding strategy.

    PubMed

    Fourakis, Marios S; Hawks, John W; Holden, Laura K; Skinner, Margaret W; Holden, Timothy A

    2007-09-01

    The choice of frequency boundaries for the analysis channels of cochlear implants has been shown to impact the speech perception performance of adult recipients (Skinner et al, 1995; Fourakis et al, 2004). While technological limitations heretofore have limited the clinical feasibility of investigating novel frequency assignments, the SPEAR3 research processor affords the opportunity to investigate an unlimited number of possibilities. Here, four different assignments are evaluated using a variety of speech stimuli. All participants accommodated to assignment changes, and no one assignment was significantly preferred. The results suggest that better performance can be achieved using a strategy whereby (1) there are at least 7-8 electrodes allocated below 1000 Hz, (2) the majority of remaining electrodes are allocated between 1100-3000 Hz, and (3) the region above 3 kHz is represented by relatively few electrodes (i.e., 1-3). The results suggest that such frequency assignment flexibility should be made clinically available. PMID:18326156

  15. Lexical stress assignment as a problem of probabilistic inference.

    PubMed

    Jouravlev, Olessia; Lupker, Stephen J

    2015-10-01

    A new conceptualization of the process of stress assignment, couched in the principles of (Bayesian) probabilistic inference, is introduced in this paper. According to this approach, in deciding where to place stress in a polysyllabic word, a reader estimates the posterior probabilities of alternative stress patterns. This estimation is accomplished by adjusting a prior belief about the likelihoods of alternative stress patterns (derived from experience with the distribution of stress patterns in the language) by using lexical and non-lexical sources of evidence for stress derived from the orthographic input. The proposed theoretical framework was used to compute probabilities of stress patterns for Russian disyllabic words and nonwords which were then compared with the performance of readers. The results showed that the estimated probabilities of stress patterns were reflective of actual stress assignment performance and of naming latencies, suggesting that the mechanisms that are involved in the process of stress assignment might indeed be inferentially-based.

  16. The role of service areas in the optimization of FSS orbital and frequency assignments

    NASA Technical Reports Server (NTRS)

    Levis, C. A.; Wang, C. W.; Yamamura, Y.; Reilly, C. H.; Gonsalvez, D. J.

    1985-01-01

    A relationship is derived, on a single-entry interference basis, for the minimum allowable spacing between two satellites as a function of electrical parameters and service-area geometries. For circular beams, universal curves relate the topocentric satellite spacing angle to the service-area separation angle measured at the satellite. The corresponding geocentric spacing depends only weakly on the mean longitude of the two satellites, and this is true also for alliptical antenna beams. As a consequence, if frequency channels are preassigned, the orbital assignment synthesis of a satellite system can be formulated as a mixed-integer programming (MIP) problem or approximated by a linear programming (LP) problem, with the interference protection requirements enforced by constraints while some linear function is optimized. Possible objective-function choices are discussed and explicit formulations are presented for the choice of the sum of the absolute deviations of the orbital locations from some prescribed ideal location set. A test problem is posed consisting of six service areas, each served by one satellite, all using elliptical antenna beams and the same frequency channels. Numerical results are given for the three ideal location prescriptions for both the MIP and LP formulations. The resulting scenarios also satisfy reasonable aggregate interference protection requirements.

  17. Solving the assignment problem using continuous-time and discrete-time improved dual networks.

    PubMed

    Hu, Xiaolin; Wang, Jun

    2012-05-01

    The assignment problem is an archetypal combinatorial optimization problem. In this brief, we present a continuous-time version and a discrete-time version of the improved dual neural network (IDNN) for solving the assignment problem. Compared with most assignment networks in the literature, the two versions of IDNNs are advantageous in circuit implementation due to their simple structures. Both of them are theoretically guaranteed to be globally convergent to a solution of the assignment problem if only the solution is unique. PMID:24806130

  18. Effects of Problem Order on Accuracy, Preference, and Choice of Multiplication Assignments

    ERIC Educational Resources Information Center

    Jaspers, Kathryn E.; Skinner, Christopher H.; Williams, Robert L.; Saecker, Lee B.

    2007-01-01

    College students (N = 151) completed three in-class mathematics assignments that varied with respect to the order of short, medium, and long multiplication problems, including a short-to-long order, a long-to-short order, and a random order. Problem order within assignments did not significantly affect work accuracy, completion time, or assignment…

  19. Reducing Perceptions of Time Required to Complete Math Assignments by Adding Problems to Assignments: A Synthesis of the Additive Interspersal Research

    ERIC Educational Resources Information Center

    Billington, Eric J.; Skinner, Christopher H.

    2006-01-01

    Results from nine experiments were analyzed to evaluate the relationship between relative problem completion rates (RPCR) and judgments of time involving mathematics assignments. For each experiment, control assignments contained only target mathematics computation or word problems. Matched experimental assignments contained similar target…

  20. Simulated annealing algorithm for solving chambering student-case assignment problem

    NASA Astrophysics Data System (ADS)

    Ghazali, Saadiah; Abdul-Rahman, Syariza

    2015-12-01

    The problem related to project assignment problem is one of popular practical problem that appear nowadays. The challenge of solving the problem raise whenever the complexity related to preferences, the existence of real-world constraints and problem size increased. This study focuses on solving a chambering student-case assignment problem by using a simulated annealing algorithm where this problem is classified under project assignment problem. The project assignment problem is considered as hard combinatorial optimization problem and solving it using a metaheuristic approach is an advantage because it could return a good solution in a reasonable time. The problem of assigning chambering students to cases has never been addressed in the literature before. For the proposed problem, it is essential for law graduates to peruse in chambers before they are qualified to become legal counselor. Thus, assigning the chambering students to cases is a critically needed especially when involving many preferences. Hence, this study presents a preliminary study of the proposed project assignment problem. The objective of the study is to minimize the total completion time for all students in solving the given cases. This study employed a minimum cost greedy heuristic in order to construct a feasible initial solution. The search then is preceded with a simulated annealing algorithm for further improvement of solution quality. The analysis of the obtained result has shown that the proposed simulated annealing algorithm has greatly improved the solution constructed by the minimum cost greedy heuristic. Hence, this research has demonstrated the advantages of solving project assignment problem by using metaheuristic techniques.

  1. An integer programming model for gate assignment problem at airline terminals

    NASA Astrophysics Data System (ADS)

    Chun, Chong Kok; Nordin, Syarifah Zyurina

    2015-05-01

    In this paper, we concentrate on a gate assignment problem (GAP) at the airlines terminal. Our problem is to assign an arrival plane to a suitable gate. There are two considerations needed to take. One of its is passenger walking distance from arrival gate to departure gate while another consideration is the transport baggage distance from one gate to another. Our objective is to minimize the total distance between the gates that related to assign the arrival plane to the suitable gates. An integer linear programming (ILP) model is proposed to solve this gate assignment problem. We also conduct a computational experiment using CPLEX 12.1 solver in AIMMS 3.10 software to analyze the performance of the model. Results of the computational experiments are presented. The efficiency of flights assignment is depends on the ratio of the weight for both total passenger traveling distances and total baggage transport distances.

  2. Successive linear optimization approach to the dynamic traffic assignment problem

    SciTech Connect

    Ho, J.K.

    1980-11-01

    A dynamic model for the optimal control of traffic flow over a network is considered. The model, which treats congestion explicitly in the flow equations, gives rise to nonlinear, nonconvex mathematical programming problems. It has been shown for a piecewise linear version of this model that a global optimum is contained in the set of optimal solutions of a certain linear program. A sufficient condition for optimality which implies that a global optimum can be obtained by successively optimizing at most N + 1 objective functions for the linear program, where N is the number of time periods in the planning horizon is presented. Computational results are reported to indicate the efficiency of this approach.

  3. Inverse scattering problems with multi-frequencies

    NASA Astrophysics Data System (ADS)

    Bao, Gang; Li, Peijun; Lin, Junshan; Triki, Faouzi

    2015-09-01

    This paper is concerned with computational approaches and mathematical analysis for solving inverse scattering problems in the frequency domain. The problems arise in a diverse set of scientific areas with significant industrial, medical, and military applications. In addition to nonlinearity, there are two common difficulties associated with the inverse problems: ill-posedness and limited resolution (diffraction limit). Due to the diffraction limit, for a given frequency, only a low spatial frequency part of the desired parameter can be observed from measurements in the far field. The main idea developed here is that if the reconstruction is restricted to only the observable part, then the inversion will become stable. The challenging task is how to design stable numerical methods for solving these inverse scattering problems inspired by the diffraction limit. Recently, novel recursive linearization based algorithms have been presented in an attempt to answer the above question. These methods require multi-frequency scattering data and proceed via a continuation procedure with respect to the frequency from low to high. The objective of this paper is to give a brief review of these methods, their error estimates, and the related mathematical analysis. More attention is paid to the inverse medium and inverse source problems. Numerical experiments are included to illustrate the effectiveness of these methods.

  4. 47 CFR 101.805 - Assignment of frequencies to mobile stations.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 5 2013-10-01 2013-10-01 false Assignment of frequencies to mobile stations. 101.805 Section 101.805 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES FIXED MICROWAVE SERVICES Local Television Transmission Service § 101.805...

  5. 47 CFR 101.805 - Assignment of frequencies to mobile stations.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Assignment of frequencies to mobile stations. 101.805 Section 101.805 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES FIXED MICROWAVE SERVICES Local Television Transmission Service § 101.805...

  6. 47 CFR 101.805 - Assignment of frequencies to mobile stations.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Assignment of frequencies to mobile stations. 101.805 Section 101.805 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES FIXED MICROWAVE SERVICES Local Television Transmission Service § 101.805...

  7. 47 CFR 101.805 - Assignment of frequencies to mobile stations.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Assignment of frequencies to mobile stations. 101.805 Section 101.805 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES FIXED MICROWAVE SERVICES Local Television Transmission Service § 101.805...

  8. 47 CFR 101.805 - Assignment of frequencies to mobile stations.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Assignment of frequencies to mobile stations. 101.805 Section 101.805 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES FIXED MICROWAVE SERVICES Local Television Transmission Service § 101.805...

  9. Decision Making In Assignment Problem With Multiple Attributes Under Intuitionistic Fuzzy Environment

    NASA Astrophysics Data System (ADS)

    Mukherjee, Sathi; Basu, Kajla

    2010-10-01

    In this paper we develop a methodology to solve the multiple attribute assignment problems where the attributes are considered to be Intuitionistic Fuzzy Sets (IFS). We apply the concept of similarity measures of IFS to solve the Intuitionistic Fuzzy Multi-Attribute Assignment Problem (IFMAAP). The weights of the attributes are determined from expert opinion. An illustrative example is solved to verify the developed approach and to demonstrate its practicality.

  10. A Parallel Biological Optimization Algorithm to Solve the Unbalanced Assignment Problem Based on DNA Molecular Computing.

    PubMed

    Wang, Zhaocai; Pu, Jun; Cao, Liling; Tan, Jian

    2015-10-23

    The unbalanced assignment problem (UAP) is to optimally resolve the problem of assigning n jobs to m individuals (m < n), such that minimum cost or maximum profit obtained. It is a vitally important Non-deterministic Polynomial (NP) complete problem in operation management and applied mathematics, having numerous real life applications. In this paper, we present a new parallel DNA algorithm for solving the unbalanced assignment problem using DNA molecular operations. We reasonably design flexible-length DNA strands representing different jobs and individuals, take appropriate steps, and get the solutions of the UAP in the proper length range and O(mn) time. We extend the application of DNA molecular operations and simultaneity to simplify the complexity of the computation.

  11. A Parallel Biological Optimization Algorithm to Solve the Unbalanced Assignment Problem Based on DNA Molecular Computing.

    PubMed

    Wang, Zhaocai; Pu, Jun; Cao, Liling; Tan, Jian

    2015-01-01

    The unbalanced assignment problem (UAP) is to optimally resolve the problem of assigning n jobs to m individuals (m < n), such that minimum cost or maximum profit obtained. It is a vitally important Non-deterministic Polynomial (NP) complete problem in operation management and applied mathematics, having numerous real life applications. In this paper, we present a new parallel DNA algorithm for solving the unbalanced assignment problem using DNA molecular operations. We reasonably design flexible-length DNA strands representing different jobs and individuals, take appropriate steps, and get the solutions of the UAP in the proper length range and O(mn) time. We extend the application of DNA molecular operations and simultaneity to simplify the complexity of the computation. PMID:26512650

  12. A Parallel Biological Optimization Algorithm to Solve the Unbalanced Assignment Problem Based on DNA Molecular Computing

    PubMed Central

    Wang, Zhaocai; Pu, Jun; Cao, Liling; Tan, Jian

    2015-01-01

    The unbalanced assignment problem (UAP) is to optimally resolve the problem of assigning n jobs to m individuals (m < n), such that minimum cost or maximum profit obtained. It is a vitally important Non-deterministic Polynomial (NP) complete problem in operation management and applied mathematics, having numerous real life applications. In this paper, we present a new parallel DNA algorithm for solving the unbalanced assignment problem using DNA molecular operations. We reasonably design flexible-length DNA strands representing different jobs and individuals, take appropriate steps, and get the solutions of the UAP in the proper length range and O(mn) time. We extend the application of DNA molecular operations and simultaneity to simplify the complexity of the computation. PMID:26512650

  13. On the problem of vehicles assignment in the conditions of open-cast mining

    NASA Astrophysics Data System (ADS)

    Davkaev, K. S.; Lyakhovets, M. V.

    2016-10-01

    The problem of optimal truck-excavators assignment is considered. A new objective function is offered, which takes into account the performance of a given amount of work and the capacity of each truck and excavator. Different solutions are offered and an example of a problem solution is provided.

  14. Ontological Problem-Solving Framework for Assigning Sensor Systems and Algorithms to High-Level Missions

    PubMed Central

    Qualls, Joseph; Russomanno, David J.

    2011-01-01

    The lack of knowledge models to represent sensor systems, algorithms, and missions makes opportunistically discovering a synthesis of systems and algorithms that can satisfy high-level mission specifications impractical. A novel ontological problem-solving framework has been designed that leverages knowledge models describing sensors, algorithms, and high-level missions to facilitate automated inference of assigning systems to subtasks that may satisfy a given mission specification. To demonstrate the efficacy of the ontological problem-solving architecture, a family of persistence surveillance sensor systems and algorithms has been instantiated in a prototype environment to demonstrate the assignment of systems to subtasks of high-level missions. PMID:22164081

  15. Agreement on diagnoses of mental health problems between an online clinical assignment and a routine clinical assignment.

    PubMed

    Brøndbo, Per Håkan; Mathiassen, Børge; Martinussen, Monica; Handegård, Bjørn Helge; Kvernmo, Siv

    2013-02-01

    We examined the agreement between diagnoses assigned based on the Development and Well Being Assessment (DAWBA) information collected online, and ordinary day-to-day diagnostic assignment by Child and Adolescent Mental Health Service (CAMHS) clinicians. Diagnoses were compared for 286 patients. Raw agreement for diagnostic categories was 74-90%, resulting in kappa values of 0.41-0.49. Multinomial regression models for 'emotional diagnosis' and 'hyperkinetic/conduct diagnosis' were significant (P < 0.001). Age, gender and number of informants significantly contributed to the explanation of agreement and disagreement. Agreement on mental health diagnoses may be sufficient to replace routine clinical assignment of diagnoses with an online clinical assignment, thereby saving time and resources.

  16. An analysis of spectral envelope-reduction via quadratic assignment problems

    NASA Technical Reports Server (NTRS)

    George, Alan; Pothen, Alex

    1994-01-01

    A new spectral algorithm for reordering a sparse symmetric matrix to reduce its envelope size was described. The ordering is computed by associating a Laplacian matrix with the given matrix and then sorting the components of a specified eigenvector of the Laplacian. In this paper, we provide an analysis of the spectral envelope reduction algorithm. We described related 1- and 2-sum problems; the former is related to the envelope size, while the latter is related to an upper bound on the work involved in an envelope Cholesky factorization scheme. We formulate the latter two problems as quadratic assignment problems, and then study the 2-sum problem in more detail. We obtain lower bounds on the 2-sum by considering a projected quadratic assignment problem, and then show that finding a permutation matrix closest to an orthogonal matrix attaining one of the lower bounds justifies the spectral envelope reduction algorithm. The lower bound on the 2-sum is seen to be tight for reasonably 'uniform' finite element meshes. We also obtain asymptotically tight lower bounds for the envelope size for certain classes of meshes.

  17. Knowledge-based design of generate-and-patch problem solvers that solve global resource assignment problems

    NASA Technical Reports Server (NTRS)

    Voigt, Kerstin

    1992-01-01

    We present MENDER, a knowledge based system that implements software design techniques that are specialized to automatically compile generate-and-patch problem solvers that satisfy global resource assignments problems. We provide empirical evidence of the superior performance of generate-and-patch over generate-and-test: even with constrained generation, for a global constraint in the domain of '2D-floorplanning'. For a second constraint in '2D-floorplanning' we show that even when it is possible to incorporate the constraint into a constrained generator, a generate-and-patch problem solver may satisfy the constraint more rapidly. We also briefly summarize how an extended version of our system applies to a constraint in the domain of 'multiprocessor scheduling'.

  18. Probabilistic Cross-identification in Crowded Fields as an Assignment Problem

    NASA Astrophysics Data System (ADS)

    Budavári, Tamás; Basu, Amitabh

    2016-10-01

    One of the outstanding challenges of cross-identification is multiplicity: detections in crowded regions of the sky are often linked to more than one candidate associations of similar likelihoods. We map the resulting maximum likelihood partitioning to the fundamental assignment problem of discrete mathematics and efficiently solve the two-way catalog-level matching in the realm of combinatorial optimization using the so-called Hungarian algorithm. We introduce the method, demonstrate its performance in a mock universe where the true associations are known, and discuss the applicability of the new procedure to large surveys.

  19. A Genetic Algorithm Approach for the TV Self-Promotion Assignment Problem

    NASA Astrophysics Data System (ADS)

    Pereira, Paulo A.; Fontes, Fernando A. C. C.; Fontes, Dalila B. M. M.

    2009-09-01

    We report on the development of a Genetic Algorithm (GA), which has been integrated into a Decision Support System to plan the best assignment of the weekly self-promotion space for a TV station. The problem addressed consists on deciding which shows to advertise and when such that the number of viewers, of an intended group or target, is maximized. The GA proposed incorporates a greedy heuristic to find good initial solutions. These solutions, as well as the solutions later obtained through the use of the GA, go then through a repair procedure. This is used with two objectives, which are addressed in turn. Firstly, it checks the solution feasibility and if unfeasible it is fixed by removing some shows. Secondly, it tries to improve the solution by adding some extra shows. Since the problem faced by the commercial TV station is too big and has too many features it cannot be solved exactly. Therefore, in order to test the quality of the solutions provided by the proposed GA we have randomly generated some smaller problem instances. For these problems we have obtained solutions on average within 1% of the optimal solution value.

  20. 47 CFR 90.173 - Policies governing the assignment of frequencies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Federal Register citations affecting § 90.173, see the List of CFR Sections Affected, which appears in the... 47 Telecommunication 5 2012-10-01 2012-10-01 false Policies governing the assignment of... SPECIAL RADIO SERVICES PRIVATE LAND MOBILE RADIO SERVICES Policies Governing the Assignment of...

  1. 47 CFR 90.173 - Policies governing the assignment of frequencies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Federal Register citations affecting § 90.173, see the List of CFR Sections Affected, which appears in the... 47 Telecommunication 5 2014-10-01 2014-10-01 false Policies governing the assignment of... SPECIAL RADIO SERVICES PRIVATE LAND MOBILE RADIO SERVICES Policies Governing the Assignment of...

  2. 47 CFR 90.265 - Assignment and use of frequencies in the bands allocated for Federal use.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... only to licensees directly responsible for the prevention, detection, and suppression of forest fires... for the prevention, detection, and suppression of forest fires; or to licensees engaged in forest... center frequencies are available for assignment to licensees engaged in forest firefighting...

  3. 47 CFR 90.265 - Assignment and use of frequencies in the bands allocated for Federal use.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... only to licensees directly responsible for the prevention, detection, and suppression of forest fires... for the prevention, detection, and suppression of forest fires; or to licensees engaged in forest... center frequencies are available for assignment to licensees engaged in forest firefighting...

  4. 47 CFR 90.265 - Assignment and use of frequencies in the bands allocated for Federal use.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... only to licensees directly responsible for the prevention, detection, and suppression of forest fires... for the prevention, detection, and suppression of forest fires; or to licensees engaged in forest... center frequencies are available for assignment to licensees engaged in forest firefighting...

  5. 47 CFR 90.265 - Assignment and use of frequencies in the bands allocated for Federal use.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... only to licensees directly responsible for the prevention, detection, and suppression of forest fires... for the prevention, detection, and suppression of forest fires; or to licensees engaged in forest... center frequencies are available for assignment to licensees engaged in forest firefighting...

  6. 47 CFR 90.265 - Assignment and use of frequencies in the bands allocated for Federal use.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... only to licensees directly responsible for the prevention, detection, and suppression of forest fires... for the prevention, detection, and suppression of forest fires; or to licensees engaged in forest... center frequencies are available for assignment to licensees engaged in forest firefighting...

  7. A multi-period capacitated school location problem with modular equipment and closest assignment considerations

    NASA Astrophysics Data System (ADS)

    Delmelle, Eric M.; Thill, Jean-Claude; Peeters, Dominique; Thomas, Isabelle

    2014-07-01

    In rapidly growing urban areas, it is deemed vital to expand (or contract) an existing network of public facilities to meet anticipated changes in the level of demand. We present a multi-period capacitated median model for school network facility location planning that minimizes transportation costs, while functional costs are subject to a budget constraint. The proposed Vintage Flexible Capacitated Location Problem (ViFCLP) has the flexibility to account for a minimum school-age closing requirement, while the maximum capacity of each school can be adjusted by the addition of modular units. Non-closest assignments are controlled by the introduction of a parameter penalizing excess travel. The applicability of the ViFCLP is illustrated on a large US school system (Charlotte-Mecklenburg, North Carolina) where high school demand is expected to grow faster with distance to the city center. Higher school capacities and greater penalty on travel impedance parameter reduce the number of non-closest assignments. The proposed model is beneficial to policy makers seeking to improve the provision and efficiency of public services over a multi-period planning horizon.

  8. Heuristic algorithms for a storage location assignment problem in a chaotic warehouse

    NASA Astrophysics Data System (ADS)

    Quintanilla, Sacramento; Pérez, Ángeles; Ballestín, Francisco; Lino, Pilar

    2015-10-01

    The extensive application of emerging technologies is revolutionizing warehouse management. These technologies facilitate working with complex and powerful warehouse management models in which products do not have assigned fixed locations (random storage). Random storage allows the utilization of the available space to be optimized. In this context, and motivated by a real problem, this article presents a model that looks for the optimal allocation of goods in order to maximize the storage space availability within the restrictions of the warehouse. For the proposed model a construction method, a local search algorithm and different metaheuristics have been developed. The introduced algorithms can also be used for other purposes such as to assess when and how it is convenient to perform relocation of stored items to improve the current level of storage space availability. Computational tests performed on a set of randomly generated and real warehouse instances show the effectiveness of the proposed methods.

  9. Study on MAX-MIN Ant System with Random Selection in Quadratic Assignment Problem

    NASA Astrophysics Data System (ADS)

    Iimura, Ichiro; Yoshida, Kenji; Ishibashi, Ken; Nakayama, Shigeru

    Ant Colony Optimization (ACO), which is a type of swarm intelligence inspired by ants' foraging behavior, has been studied extensively and its effectiveness has been shown by many researchers. The previous studies have reported that MAX-MIN Ant System (MMAS) is one of effective ACO algorithms. The MMAS maintains the balance of intensification and diversification concerning pheromone by limiting the quantity of pheromone to the range of minimum and maximum values. In this paper, we propose MAX-MIN Ant System with Random Selection (MMASRS) for improving the search performance even further. The MMASRS is a new ACO algorithm that is MMAS into which random selection was newly introduced. The random selection is one of the edgechoosing methods by agents (ants). In our experimental evaluation using ten quadratic assignment problems, we have proved that the proposed MMASRS with the random selection is superior to the conventional MMAS without the random selection in the viewpoint of the search performance.

  10. A Biogeography-Based Optimization Algorithm Hybridized with Tabu Search for the Quadratic Assignment Problem

    PubMed Central

    Lim, Wee Loon; Wibowo, Antoni; Desa, Mohammad Ishak; Haron, Habibollah

    2016-01-01

    The quadratic assignment problem (QAP) is an NP-hard combinatorial optimization problem with a wide variety of applications. Biogeography-based optimization (BBO), a relatively new optimization technique based on the biogeography concept, uses the idea of migration strategy of species to derive algorithm for solving optimization problems. It has been shown that BBO provides performance on a par with other optimization methods. A classical BBO algorithm employs the mutation operator as its diversification strategy. However, this process will often ruin the quality of solutions in QAP. In this paper, we propose a hybrid technique to overcome the weakness of classical BBO algorithm to solve QAP, by replacing the mutation operator with a tabu search procedure. Our experiments using the benchmark instances from QAPLIB show that the proposed hybrid method is able to find good solutions for them within reasonable computational times. Out of 61 benchmark instances tested, the proposed method is able to obtain the best known solutions for 57 of them. PMID:26819585

  11. A new approach on auxiliary vehicle assignment in capacitated location routing problem

    NASA Astrophysics Data System (ADS)

    Bashiri, Mahdi; Rasoulinejad, Zeinab; Fallahzade, Ehsan

    2016-03-01

    The location routing problem (LRP) considers locating depots and vehicle routing decisions simultaneously. In classic LRP the number of customers in each route depends on the capacity of the vehicle. In this paper a capacitated LRP model with auxiliary vehicle assignment is presented in which the length of each route is not restricted by main vehicle capacity. Two kinds of vehicles are considered: main vehicles with higher capacity and fixed cost and auxiliary vehicles with lower capacity and fixed cost. The auxiliary vehicles can be added to the transportation system as an alternative strategy to cover the capacity limitations and they are just used to transfer goods from depots to vehicles and cannot serve the customers by themselves. To show the applicability of the proposed model, some numerical examples derived from the well-known instances are used. Moreover the model has been solved by some meta-heuristics for large sized instances. The results show the efficiency of the proposed model and the solution approach, considering the classic model and the exact solution approach, respectively.

  12. Frequency-Weighting Filter Selection, for H2 Control of Microgravity Isolation Systems: A Consideration of the "Implicit Frequency Weighting" Problem

    NASA Technical Reports Server (NTRS)

    Hampton, Roy David; Whorton, Mark S.

    1999-01-01

    Many space-science experiments need an active isolation system to provide them with the requisite microgravity environment. The isolation systems planned for use with the International Space Station (ISS) have been appropriately modeled using relative position, relative velocity, and acceleration states. In theory, frequency-weighting design filters can be applied to these state-space models, in order to develop optimal H2 or mixed-norm controllers with desired stability and performance characteristics. In practice, however, since there is a kinematic relationship among the various states, any frequency weighting applied to one state will implicitly weight other states. These implicit frequency-weighting effects must be considered, for intelligent frequency-weighting filter assignment. This paper suggests a rational approach to the assignment of frequency-weighting design filters, in the presence of the kinematic coupling among states that exists in the microgravity vibration isolation problem.

  13. Binge drinking among Brazilians: Higher drinking frequency increases related problems.

    PubMed

    de Castro, Daniel Sócrates; Sanchez, Zila M; Zaleski, Marcos; Palhares Alves, Hamer Nastasy; Pinsky, Ilana; Caetano, Raul; Laranjeira, Ronaldo Ramos

    2014-05-14

    Abstract Aims: To correlate binge drinking (BD) with alcohol-related problems (ARP) in the Brazilian population. Methods: A representative cross-sectional survey was conducted in 143 Brazilian cities. Associations between the frequencies of BD and ARP were gathered using an ordered logit regression model. Results: Higher BD frequencies significantly increased the chance of injury in accidents, job loss, and involvement in intense arguments and assaults over the year. High frequency in BD increases the odds of all ARP. Conclusion: There is a dose-response association between the frequency BD and ARP and is therefore a possible target for public prevention policies. PMID:24829095

  14. A gradual neural-network algorithm for jointly time-slot/code assignment problems in packet radio networks.

    PubMed

    Funabiki, N; Kitamichi, J

    1998-01-01

    A gradual neural network (GNN) algorithm is presented for the jointly time-slot/code assignment problem (JTCAP) in a packet radio network in this paper. The goal of this newly defined problem is to find a simultaneous assignment of a time-slot and a code to each communication link, whereas time-slots and codes have been independently assigned in existing algorithms. A time/code division multiple access protocol is adopted for conflict-free communications, where packets are transmitted in repetition of fixed-length time-slots with specific codes. GNN seeks the time-slot/code assignment with the minimum number of time-slots subject to two constraints: 1) the number of codes must not exceed its upper limit and 2) any couple of links within conflict distance must not be assigned to the same time-slot/code pair. The restricted problem for only one code is known to be NP-complete. The performance of GNN is verified through solving 3000 instances with 100-500 nodes and 100-1000 links. The comparison with the lower bound and a greedy algorithm shows the superiority of GNN in terms of the solution quality with the comparable computation time.

  15. 47 CFR 5.85 - Frequencies and policy governing their assignment.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... frequency a direct wave fundamental field strength of greater than 10 mV/m in the authorized bandwidth of service (-65.8 dBW/m2 power flux density assuming a free space characteristic impedance of 120π ohms) at... field strength or power flux density figure indicated would be exceeded by their proposed...

  16. 47 CFR 5.85 - Frequencies and policy governing their assignment.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... frequency a direct wave fundamental field strength of greater than 10 mV/m in the authorized bandwidth of service (-65.8 dBW/m2 power flux density assuming a free space characteristic impedance of 120π ohms) at... field strength or power flux density figure indicated would be exceeded by their proposed...

  17. 47 CFR 80.479 - Assignment and use of frequencies for AMTS.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ....479 Section 80.479 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES STATIONS IN THE MARITIME SERVICES Public Coast Stations Automated Systems § 80.479... frequencies may be used for mobile-to-mobile communications if written consent is obtained from all...

  18. 47 CFR 80.479 - Assignment and use of frequencies for AMTS.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ....479 Section 80.479 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES STATIONS IN THE MARITIME SERVICES Public Coast Stations Automated Systems § 80.479... frequencies may be used for mobile-to-mobile communications if written consent is obtained from all...

  19. 47 CFR 80.479 - Assignment and use of frequencies for AMTS.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ....479 Section 80.479 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES STATIONS IN THE MARITIME SERVICES Public Coast Stations Automated Systems § 80.479... frequencies may be used for mobile-to-mobile communications if written consent is obtained from all...

  20. 47 CFR 90.173 - Policies governing the assignment of frequencies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... primary governmental or business activities of the licensee. (e) Persons requesting authority to operate... effective use of the authorized facilities. Licensees of stations suffering or causing harmful interference are expected to cooperate and resolve this problem by mutually satisfactory arrangements. If...

  1. Developing Problem Solving and Communication Skills through Memo Assignments in a Management Science Course

    ERIC Educational Resources Information Center

    Williams, Julie Ann Stuart; Reid, Randall C.

    2010-01-01

    The authors describe how to structure a memo format for homework assignments in which a manager requests analysis of a particular issue from the student. The student must respond with a memo stating a recommendation and describing the solution approach. The results from using the memo format include improved student performance and professional…

  2. 47 CFR 90.261 - Assignment and use of the frequencies in the band 450-470 MHz for fixed operations.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Assignment and use of the frequencies in the band 450-470 MHz for fixed operations. 90.261 Section 90.261 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES PRIVATE LAND MOBILE RADIO SERVICES Standards for Special Frequencies or Frequency Bands...

  3. Multi-frequency orthogonality sampling for inverse obstacle scattering problems

    NASA Astrophysics Data System (ADS)

    Griesmaier, Roland

    2011-08-01

    We discuss a simple non-iterative method to reconstruct the support of a collection of obstacles from the measurements of far-field patterns of acoustic or electromagnetic waves corresponding to plane-wave incident fields with one or few incident directions at several frequencies. The method is a variant of the orthogonality sampling algorithm recently studied by Potthast (2010 Inverse Problems 26 074015). Our theoretical analysis of the algorithm relies on an asymptotic expansion of the far-field pattern of the scattered field as the size of the scatterers tends to zero with respect to the wavelength of the incident field that holds not only at a single frequency, but also across appropriate frequency bands. This expansion suggests some modifications to the original orthogonality sampling algorithm and yields a theoretical motivation for its multi-frequency version. We illustrate the performance of the reconstruction method by numerical examples.

  4. A two-stage approach for a multi-objective component assignment problem for a stochastic-flow network

    NASA Astrophysics Data System (ADS)

    Lin, Yi-Kuei; Yeh, Cheng-Ta

    2013-03-01

    Many real-life systems, such as computer systems, manufacturing systems and logistics systems, are modelled as stochastic-flow networks (SFNs) to evaluate network reliability. Here, network reliability, defined as the probability that the network successfully transmits d units of data/commodity from an origin to a destination, is a performance indicator of the systems. Network reliability maximization is a particular objective, but is costly for many system supervisors. This article solves the multi-objective problem of reliability maximization and cost minimization by finding the optimal component assignment for SFN, in which a set of multi-state components is ready to be assigned to the network. A two-stage approach integrating Non-dominated Sorting Genetic Algorithm II and simple additive weighting are proposed to solve this problem, where network reliability is evaluated in terms of minimal paths and recursive sum of disjoint products. Several practical examples related to computer networks are utilized to demonstrate the proposed approach.

  5. Vibrational spectra of cis and trans but-2-enes: assignments, isolated CH stretching frequencies and CH bond lengths

    NASA Astrophysics Data System (ADS)

    McKean, D. C.; Mackenzie, M. W.; Morrisson, A. R.; Lavalley, J. C.; Janin, A.; Fawcett, V.; Edwards, H. G. M.

    Infrared and Raman spectra have been obtained from 11 isotopomers of cis and trans but-2-enes in various phases ( c- and t-CH 3CHCHCH 3, CH 3CHCDCH 3, CD 3CHCHCD 3, CD 3CHCDCD 3, CD 3CDCDCD 3; c-CH 3CDCDCH 3). Nearly all the fundamentals are securely assigned. Isolated CH stretching frequencies ν isCH are observed or deduced from the spectra and used to predict CH bond lengths and dissociation energies. The olefinic CH and methyl CH s bonds are stronger in the cis compound than those in the trans, in keeping with substituent effects previously observed in propene, and with molecular mechanics predictions. Comparison of ν isCH values with local mode fifth overtone spectra for cis-CH 3CHCHCH 3 indicates that the part of the latter associated with the CH a bond cannot be readily interpreted.

  6. A decomposition approach for the combined master surgical schedule and surgical case assignment problems.

    PubMed

    Agnetis, Alessandro; Coppi, Alberto; Corsini, Matteo; Dellino, Gabriella; Meloni, Carlo; Pranzo, Marco

    2014-03-01

    This research aims at supporting hospital management in making prompt Operating Room (OR) planning decisions, when either unpredicted events occur or alternative scenarios or configurations need to be rapidly evaluated. We design and test a planning tool enabling managers to efficiently analyse several alternatives to the current OR planning and scheduling. To this aim, we propose a decomposition approach. More specifically, we first focus on determining the Master Surgical Schedule (MSS) on a weekly basis, by assigning the different surgical disciplines to the available sessions. Next, we allocate surgeries to each session, focusing on elective patients only. Patients are selected from the waiting lists according to several parameters, including surgery duration, waiting time and priority class of the operations. We performed computational experiments to compare the performance of our decomposition approach with an (exact) integrated approach. The case study selected for our simulations is based on the characteristics of the operating theatre (OT) of a medium-size public Italian hospital. Scalability of the method is tested for different OT sizes. A pilot example is also proposed to highlight the usefulness of our approach for decision support. The proposed decomposition approach finds satisfactory solutions with significant savings in computation time.

  7. A decomposition approach for the combined master surgical schedule and surgical case assignment problems.

    PubMed

    Agnetis, Alessandro; Coppi, Alberto; Corsini, Matteo; Dellino, Gabriella; Meloni, Carlo; Pranzo, Marco

    2014-03-01

    This research aims at supporting hospital management in making prompt Operating Room (OR) planning decisions, when either unpredicted events occur or alternative scenarios or configurations need to be rapidly evaluated. We design and test a planning tool enabling managers to efficiently analyse several alternatives to the current OR planning and scheduling. To this aim, we propose a decomposition approach. More specifically, we first focus on determining the Master Surgical Schedule (MSS) on a weekly basis, by assigning the different surgical disciplines to the available sessions. Next, we allocate surgeries to each session, focusing on elective patients only. Patients are selected from the waiting lists according to several parameters, including surgery duration, waiting time and priority class of the operations. We performed computational experiments to compare the performance of our decomposition approach with an (exact) integrated approach. The case study selected for our simulations is based on the characteristics of the operating theatre (OT) of a medium-size public Italian hospital. Scalability of the method is tested for different OT sizes. A pilot example is also proposed to highlight the usefulness of our approach for decision support. The proposed decomposition approach finds satisfactory solutions with significant savings in computation time. PMID:23783452

  8. A Simple Assignment that Enhances Students' Ability to Solve Organic Chemistry Synthesis Problems and Understand Mechanisms

    ERIC Educational Resources Information Center

    Teixeira, Jennifer; Holman, R. W.

    2008-01-01

    Organic chemistry students typically struggle with the retrosynthetic approach to solving synthesis problems because most textbooks present the chemistry grouped by "reactions of the functional group". In contrast, the retrosynthetic approach requires the student to envision "reactions that yield the functional group". A second challenge is the…

  9. Binary Bees Algorithm - bioinspiration from the foraging mechanism of honeybees to optimize a multiobjective multidimensional assignment problem

    NASA Astrophysics Data System (ADS)

    Xu, Shuo; Ji, Ze; Truong Pham, Duc; Yu, Fan

    2011-11-01

    The simultaneous mission assignment and home allocation for hospital service robots studied is a Multidimensional Assignment Problem (MAP) with multiobjectives and multiconstraints. A population-based metaheuristic, the Binary Bees Algorithm (BBA), is proposed to optimize this NP-hard problem. Inspired by the foraging mechanism of honeybees, the BBA's most important feature is an explicit functional partitioning between global search and local search for exploration and exploitation, respectively. Its key parts consist of adaptive global search, three-step elitism selection (constraint handling, non-dominated solutions selection, and diversity preservation), and elites-centred local search within a Hamming neighbourhood. Two comparative experiments were conducted to investigate its single objective optimization, optimization effectiveness (indexed by the S-metric and C-metric) and optimization efficiency (indexed by computational burden and CPU time) in detail. The BBA outperformed its competitors in almost all the quantitative indices. Hence, the above overall scheme, and particularly the searching history-adapted global search strategy was validated.

  10. On the problem of resonance assignments in solid state NMR of uniformly ¹⁵N,¹³C-labeled proteins.

    PubMed

    Tycko, Robert

    2015-04-01

    Determination of accurate resonance assignments from multidimensional chemical shift correlation spectra is one of the major problems in biomolecular solid state NMR, particularly for relative large proteins with less-than-ideal NMR linewidths. This article investigates the difficulty of resonance assignment, using a computational Monte Carlo/simulated annealing (MCSA) algorithm to search for assignments from artificial three-dimensional spectra that are constructed from the reported isotropic (15)N and (13)C chemical shifts of two proteins whose structures have been determined by solution NMR methods. The results demonstrate how assignment simulations can provide new insights into factors that affect the assignment process, which can then help guide the design of experimental strategies. Specifically, simulations are performed for the catalytic domain of SrtC (147 residues, primarily β-sheet secondary structure) and the N-terminal domain of MLKL (166 residues, primarily α-helical secondary structure). Assuming unambiguous residue-type assignments and four ideal three-dimensional data sets (NCACX, NCOCX, CONCA, and CANCA), uncertainties in chemical shifts must be less than 0.4 ppm for assignments for SrtC to be unique, and less than 0.2 ppm for MLKL. Eliminating CANCA data has no significant effect, but additionally eliminating CONCA data leads to more stringent requirements for chemical shift precision. Introducing moderate ambiguities in residue-type assignments does not have a significant effect. PMID:25797013

  11. 47 CFR 90.257 - Assignment and use of frequencies in the band 72-76 MHz.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ...) Radio remote control of models is permitted on frequencies 10 kHz removed from these frequencies authorized for fixed and mobile operations in the 72-76 MHz band. Remote control operations are secondary to... otherwise, to use other available frequencies. (iii) The applicant has a plan to control any...

  12. Considerations Taken in Developing the Frequency Assignment Guidelines for Communications in the Mars Region Provided in SFCG Recommendation 22-1, (SFCG Action Item No. 23/10)

    NASA Technical Reports Server (NTRS)

    Wang, Charles C.; Peng, Ted; Sue, Miles K.

    2004-01-01

    In the 23'd Annual SFCG meeting in San Diego, CA, the SFCG created SFCG Action Item No. 23/10 to provide a readable summary of the work done by the Mars Interim Working Group (MIWG). The SFCG created the MIWG to develop a frequency plan for future Mars missions. The working group has produced a number of documents resulting in a recommendation, SFCG Rec 22-1 [1], titled Frequency Assignment Guidelines for Communications in Mars Region, including a frequency plan for the Mars Region. This document is prepared in response to the SFCG Action Item to provide an overview of the considerations taken when selecting the frequencies and to point out where detailed information of the considerations can be found.

  13. Word Frequency, Function Words and the Second Gavagai Problem

    ERIC Educational Resources Information Center

    Hochmann, Jean-Remy

    2013-01-01

    The classic gavagai problem exemplifies the difficulty to identify the referent of a novel word uttered in a foreign language. Here, we consider the reverse problem: identifying the referential part of a label. Assuming "gavagai" indicates a rabbit in a foreign language, it may very well mean ""a" rabbit" or ""that" rabbit". How can a learner know…

  14. Jet spectroscopy of arylmethyl radicals in the visible region: assignment of low-frequency vibrational modes in diphenylmethyl and chlorodiphenylmethyl radicals.

    PubMed

    Tsuge, Masashi; Hamatani, Satoshi; Kawai, Akio; Tsuji, Kazuhide; Shibuya, Kazuhiko

    2006-01-14

    The D(1)-D(0) transitions of diphenylmethyl (DPM) and chlorodiphenylmethyl (CDPM) radicals were studied by laser induced fluorescence (LIF) spectroscopy in a supersonic jet. Laser induced fluorescence excitation and dispersed fluorescence (DF) spectra were obtained for DPM and CDPM radicals produced by ArF excimer laser (193 nm) photolyses of their chlorides. With the aid of the density functional theory (DFT) calculation, vibronic bands are assigned by comparing the observed LIF excitation spectra of the jet-cooled radicals with the single vibronic level DF spectra. Low-frequency vibrations of 55 and 53 cm(-1) in the ground and excited states, respectively, are assigned to the symmetric phenyl torsional mode of the DPM radical. The geometries of DPM in the ground and excited states are discussed with regards to observed spectra and DFT calculations. Similarly for the CDPM radical, symmetric phenyl torsional and Ph-C-Ph bending modes are assigned and the halogen-substitution effect in equilibrium geometry is discussed.

  15. Career, Personal, and Educational Problems of Community College Students: Severity and Frequency.

    ERIC Educational Resources Information Center

    Coll, Kenneth M.

    1995-01-01

    Gathered information about the severity and frequency of community college student problems, through a survey of 65 public community college counselors. Most reported an increase in severity of personal problems (family, alcohol, self-worth), career (goals, job market), and educational problems (lack of skills, time management). Reports other…

  16. Learning Problems and the TS Child [and] Specific Classroom Strategies and Techniques for Students with Tourette Syndrome [and] Techniques To Aid Students with TS in Completing Written Assignments.

    ERIC Educational Resources Information Center

    Davidovicz, Herman; And Others

    Three fact sheets provide parents and educators with basic information on Tourette Syndrome (TS). The first sheet is titled "Learning Problems and the TS Child" and is by Herman Davidovicz, a neuropsychologist. It notes the high frequency of attention deficit disorders and learning problems in children with TS and provides information for parents…

  17. The interaction of subsyllabic encoding and stress assignment: A new examination of an old problem in Spanish

    PubMed Central

    Shelton, Michael; Gerfen, Chip; Palma, Nicolás Gutiérrez

    2012-01-01

    This study employs a naming task to examine the role of the syllable in speech production, focusing on a lesser-studied aspect of syllabic processing, the interaction of subsyllabic patterns (i.e. syllable phonotactics) and higher-level prosody, in this case, stress assignment in Spanish. Specifically, we examine a controversial debate in Spanish regarding the interaction of syllable weight and stress placement, showing that traditional representations of weight fail to predict the differential modulation of stress placement by rising versus falling diphthongs in Spanish nonce forms. Our results also suggest that the internal structure of the syllable plays a larger role than is assumed in the processing literature in that it modulates higher-level processes such as stress encoding. Our results thus inform the debate regarding syllable weight in Spanish and linguistic theorizing more broadly, as well as expand our understanding of the importance of the syllable, and more specifically its internal structure, in modulating word processing. PMID:23264712

  18. How the credit assignment problems in motor control could be solved after the cerebellum predicts increases in error

    PubMed Central

    Verduzco-Flores, Sergio O.; O'Reilly, Randall C.

    2015-01-01

    We present a cerebellar architecture with two main characteristics. The first one is that complex spikes respond to increases in sensory errors. The second one is that cerebellar modules associate particular contexts where errors have increased in the past with corrective commands that stop the increase in error. We analyze our architecture formally and computationally for the case of reaching in a 3D environment. In the case of motor control, we show that there are synergies of this architecture with the Equilibrium-Point hypothesis, leading to novel ways to solve the motor error and distal learning problems. In particular, the presence of desired equilibrium lengths for muscles provides a way to know when the error is increasing, and which corrections to apply. In the context of Threshold Control Theory and Perceptual Control Theory we show how to extend our model so it implements anticipative corrections in cascade control systems that span from muscle contractions to cognitive operations. PMID:25852535

  19. Talk aloud problem solving: Exploration of acquisition and frequency building in science text

    NASA Astrophysics Data System (ADS)

    Dembek, Ginny

    Discovering new ways to help students attain higher levels of scientific knowledge and to think critically is a national goal (Educate to Innovate campaign). Despite the best intentions, many students struggle to achieve a basic level of science knowledge (NAEP, 2011). The present study examined Talk Aloud Pair Problem Solving and frequency building with five students who were diagnosed with a disability and receive specialized reading instruction in a special education setting. Acquisition was obtained through scripted lessons and frequency building or practice strengthened the student's verbal repertoire making the problem solving process a durable behavior. Overall, students all demonstrated improvements in problem solving performance when compared to baseline. Students became more significantly accurate in performance and maintenance in learning was demonstrated. Generalization probes indicated improvement in student performance. Implications for practice and future research are discussed.

  20. Two Point Exponential Approximation Method for structural optimization of problems with frequency constraints

    NASA Technical Reports Server (NTRS)

    Fadel, G. M.

    1991-01-01

    The point exponential approximation method was introduced by Fadel et al. (Fadel, 1990), and tested on structural optimization problems with stress and displacement constraints. The reports in earlier papers were promising, and the method, which consists of correcting Taylor series approximations using previous design history, is tested in this paper on optimization problems with frequency constraints. The aim of the research is to verify the robustness and speed of convergence of the two point exponential approximation method when highly non-linear constraints are used.

  1. Motivational pathways from reward sensitivity and punishment sensitivity to gambling frequency and gambling-related problems.

    PubMed

    Wardell, Jeffrey D; Quilty, Lena C; Hendershot, Christian S; Bagby, R Michael

    2015-12-01

    Motives for gambling have been shown to have an important role in gambling behavior, consistent with the literature on motives for substance use. While studies have demonstrated that traits related to sensitivity to reward (SR) and sensitivity to punishment (SP) are predictive of substance use motives, little research has examined the role of these traits in gambling motives. This study investigated motivational pathways from SR and SP to gambling frequency and gambling problems via specific gambling motives, while also taking into account history of substance use disorder (SUD). A community sample of gamblers (N = 248) completed self-report questionnaires assessing SR, SP, gambling frequency, gambling-related problems, and motives for gambling (social, negative affect, and enhancement/winning motives). Lifetime SUD was also assessed with a structured clinical interview. The results of a path analysis showed that SR was uniquely associated with all 3 types of gambling motives, whereas SP and SUD were associated with negative affect and enhancement/winning motives but not social motives. Also, both negative affect and enhancement/winning motives were associated with gambling problems, but only enhancement/winning motives were significantly related to gambling frequency. Analyses of indirect associations revealed significant indirect associations from SR, SP, and SUD to gambling frequency mediated through enhancement/winning motives and to gambling problems mediated through both negative affect and enhancement/winning motives. The findings highlight the importance of SR and SP as independent predictors of gambling motives and suggest that specific motivational pathways underlie their associations with gambling outcomes.

  2. Motivational pathways from reward sensitivity and punishment sensitivity to gambling frequency and gambling-related problems.

    PubMed

    Wardell, Jeffrey D; Quilty, Lena C; Hendershot, Christian S; Bagby, R Michael

    2015-12-01

    Motives for gambling have been shown to have an important role in gambling behavior, consistent with the literature on motives for substance use. While studies have demonstrated that traits related to sensitivity to reward (SR) and sensitivity to punishment (SP) are predictive of substance use motives, little research has examined the role of these traits in gambling motives. This study investigated motivational pathways from SR and SP to gambling frequency and gambling problems via specific gambling motives, while also taking into account history of substance use disorder (SUD). A community sample of gamblers (N = 248) completed self-report questionnaires assessing SR, SP, gambling frequency, gambling-related problems, and motives for gambling (social, negative affect, and enhancement/winning motives). Lifetime SUD was also assessed with a structured clinical interview. The results of a path analysis showed that SR was uniquely associated with all 3 types of gambling motives, whereas SP and SUD were associated with negative affect and enhancement/winning motives but not social motives. Also, both negative affect and enhancement/winning motives were associated with gambling problems, but only enhancement/winning motives were significantly related to gambling frequency. Analyses of indirect associations revealed significant indirect associations from SR, SP, and SUD to gambling frequency mediated through enhancement/winning motives and to gambling problems mediated through both negative affect and enhancement/winning motives. The findings highlight the importance of SR and SP as independent predictors of gambling motives and suggest that specific motivational pathways underlie their associations with gambling outcomes. PMID:25915690

  3. Stereospecificity of (1) H, (13) C and (15) N shielding constants in the isomers of methylglyoxal bisdimethylhydrazone: problem with configurational assignment based on (1) H chemical shifts.

    PubMed

    Afonin, Andrei V; Pavlov, Dmitry V; Ushakov, Igor A; Keiko, Natalia A

    2012-07-01

    In the (13) C NMR spectra of methylglyoxal bisdimethylhydrazone, the (13) C-5 signal is shifted to higher frequencies, while the (13) C-6 signal is shifted to lower frequencies on going from the EE to ZE isomer following the trend found previously. Surprisingly, the (1) H-6 chemical shift and (1) J(C-6,H-6) coupling constant are noticeably larger in the ZE isomer than in the EE isomer, although the configuration around the -CH═N- bond does not change. This paradox can be rationalized by the C-H⋯N intramolecular hydrogen bond in the ZE isomer, which is found from the quantum-chemical calculations including Bader's quantum theory of atoms in molecules analysis. This hydrogen bond results in the increase of δ((1) H-6) and (1) J(C-6,H-6) parameters. The effect of the C-H⋯N hydrogen bond on the (1) H shielding and one-bond (13) C-(1) H coupling complicates the configurational assignment of the considered compound because of these spectral parameters. The (1) H, (13) C and (15) N chemical shifts of the 2- and 8-(CH(3) )(2) N groups attached to the -C(CH(3) )═N- and -CH═N- moieties, respectively, reveal pronounced difference. The ab initio calculations show that the 8-(CH(3) )(2) N group conjugate effectively with the π-framework, and the 2-(CH(3) )(2) N group twisted out from the plane of the backbone and loses conjugation. As a result, the degree of charge transfer from the N-2- and N-8- nitrogen lone pairs to the π-framework varies, which affects the (1) H, (13) C and (15) N shieldings. PMID:22615146

  4. Assignment Choice, Effort, and Assignment Completion: Does Work Ethic Predict Those Who Choose Higher-Effort Assignments?

    ERIC Educational Resources Information Center

    Parkhurst, John T.; Fleisher, Matthew S.; Skinner, Christopher H.; Woehr, David J.; Hawthorn-Embree, Meredith L.

    2011-01-01

    After completing the Multidimensional Work-Ethic Profile (MWEP), 98 college students were given a 20-problem math computation assignment and instructed to stop working on the assignment after completing 10 problems. Next, they were allowed to choose to finish either the partially completed assignment that had 10 problems remaining or a new…

  5. 47 CFR 90.267 - Assignment and use of frequencies in the 450-470 MHz band for low power use.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... operation determine whether a station is within an “80 km circle.” (i) The maximum ERP for low power... ERP for low power operation on these frequencies is as follows: Operation Low side of frequency pair.... (2) Operation on these frequencies is limited to 6 watts ERP for base, mobile or operational...

  6. Development of a Microbiology Course for Diverse Majors: Longitudinal Survey of the Use of Various Active, Problem-Based Learning Assignments.

    ERIC Educational Resources Information Center

    Cundell, Diana R.

    2002-01-01

    Reports on the development of a series of assignments for use in a basic microbiology course involving sophomore-, junior-, and senior-level students from five different biology majors. Assignments include writing, a class debate, and case history studies. (Author/MM)

  7. Automated Negotiation for Resource Assignment in Wireless Surveillance Sensor Networks

    PubMed Central

    de la Hoz, Enrique; Gimenez-Guzman, Jose Manuel; Marsa-Maestre, Ivan; Orden, David

    2015-01-01

    Due to the low cost of CMOS IP-based cameras, wireless surveillance sensor networks have emerged as a new application of sensor networks able to monitor public or private areas or even country borders. Since these networks are bandwidth intensive and the radioelectric spectrum is limited, especially in unlicensed bands, it is mandatory to assign frequency channels in a smart manner. In this work, we propose the application of automated negotiation techniques for frequency assignment. Results show that these techniques are very suitable for the problem, being able to obtain the best solutions among the techniques with which we have compared them. PMID:26610512

  8. Automated Negotiation for Resource Assignment in Wireless Surveillance Sensor Networks.

    PubMed

    de la Hoz, Enrique; Gimenez-Guzman, Jose Manuel; Marsa-Maestre, Ivan; Orden, David

    2015-01-01

    Due to the low cost of CMOS IP-based cameras, wireless surveillance sensor networks have emerged as a new application of sensor networks able to monitor public or private areas or even country borders. Since these networks are bandwidth intensive and the radioelectric spectrum is limited, especially in unlicensed bands, it is mandatory to assign frequency channels in a smart manner. In this work, we propose the application of automated negotiation techniques for frequency assignment. Results show that these techniques are very suitable for the problem, being able to obtain the best solutions among the techniques with which we have compared them.

  9. An Examination of Problems and Solutions Related to the Chronic "Revolving Door" Alcohol Abuser. DHSS Planning Guideline #1, Task Assignment #1.11. Long-Term Support, Chronic Alcoholism and Other Drug Abuse.

    ERIC Educational Resources Information Center

    Vick, John W.; Houden, Dorothy

    This report contains recommendations of a Wisconsin Task Assignment Steering Committee created to explore solutions to some significant problems facing adult chronic "revolving-detox-door" alcohol abusers (CRA's), persons with repeated admissions for detoxification services; and to examine the system that serves and funds them. This report is…

  10. Adolescent Alcohol-Drinking Frequency and Problem-Gambling Severity: Adolescent Perceptions Regarding Problem-Gambling Prevention and Parental/Adult Behaviors and Attitudes

    PubMed Central

    Rahman, Ardeshir S.; Balodis, Iris M.; Pilver, Corey E.; Leeman, Robert F.; Hoff, Rani A.; Steinberg, Marvin A.; Rugle, Loreen; Krishnan-Sarin, Suchitra; Potenza, Marc N.

    2014-01-01

    Background To examine in adolescents how alcohol-drinking frequency relates to gambling-related attitudes and behaviors and their perceptions of both problem-gambling prevention strategies and adult (including parental) behaviors/attitudes. Methods A survey assessing alcohol, gambling and health and functioning measures in 1609 high-school students. Students were stratified into low-frequency/non-drinking and high-frequency drinking groups, and into low-risk and at-risk/problematic gambling groups. Results High-frequency drinking was associated with at-risk/problematic gambling (χ2(1, N=1842)=49.22, p<.0001). High-frequency-drinking versus low-frequency/non-drinking adolescents exhibited more permissive attitudes towards gambling (e.g., less likely to report multiple problem-gambling prevention efforts to be important). At-risk problematic gamblers exhibited more severe drinking patterns and greater likelihood of acknowledging parental approval of drinking (χ2(1, N=1842)=31.58, p<.0001). Problem-gambling severity was more strongly related to gambling with adults among high-frequency-drinking adolescents (odds ratio [OR]=3.17, 95% confidence interval [95%CI]=[1.97, 5.09]) versus low-frequency/non-drinking (OR=1.86, 95%CI=[0.61, 2.68]) adolescents (Interaction OR=1.78, 95%CI=[1.05, 3.02]). Conclusions Inter-relationships between problematic drinking and gambling in youth may relate to more permissive attitudes across these domains. Stronger links between at-risk/problem gambling and gambling with adults in the high-frequency-drinking group raises the possibility that interventions targeting adults may help mitigate youth gambling and drinking. PMID:25147928

  11. Ethics, finance, and automation: a preliminary survey of problems in high frequency trading.

    PubMed

    Davis, Michael; Kumiega, Andrew; Van Vliet, Ben

    2013-09-01

    All of finance is now automated, most notably high frequency trading. This paper examines the ethical implications of this fact. As automation is an interdisciplinary endeavor, we argue that the interfaces between the respective disciplines can lead to conflicting ethical perspectives; we also argue that existing disciplinary standards do not pay enough attention to the ethical problems automation generates. Conflicting perspectives undermine the protection those who rely on trading should have. Ethics in finance can be expanded to include organizational and industry-wide responsibilities to external market participants and society. As a starting point, quality management techniques can provide a foundation for a new cross-disciplinary ethical standard in the age of automation.

  12. Ethics, finance, and automation: a preliminary survey of problems in high frequency trading.

    PubMed

    Davis, Michael; Kumiega, Andrew; Van Vliet, Ben

    2013-09-01

    All of finance is now automated, most notably high frequency trading. This paper examines the ethical implications of this fact. As automation is an interdisciplinary endeavor, we argue that the interfaces between the respective disciplines can lead to conflicting ethical perspectives; we also argue that existing disciplinary standards do not pay enough attention to the ethical problems automation generates. Conflicting perspectives undermine the protection those who rely on trading should have. Ethics in finance can be expanded to include organizational and industry-wide responsibilities to external market participants and society. As a starting point, quality management techniques can provide a foundation for a new cross-disciplinary ethical standard in the age of automation. PMID:23138232

  13. On the fundamental sloshing frequency in the ice-fishing problem

    NASA Astrophysics Data System (ADS)

    Kozlov, Vladimir; Kuznetsov, Nikolay

    2002-11-01

    The sloshing problem is considered in a half-space covered by a rigid dock with apertures. The dependence of the fundamental sloshing frequency on the shape of the free surface region is studied. It is proved that the inequality holds between the fundamental eigenvalues corresponding to two different regions if some conditions are fulfilled. These conditions are verified for particular classes of regions of a fixed area in order to demonstrate that the disk yields the maximum of the fundamental eigenvalue for each of these classes. On the other hand, examples of regions are constructed for which the fundamental eigenfrequency is larger than that for the circular aperture of the same area and even as large as one wishes. To cite this article: V. Kozlov, N. Kuznetsov, C. R. Mecanique 330 (2002) 723-728.

  14. Lexical Stress Assignment in Italian Developmental Dyslexia

    ERIC Educational Resources Information Center

    Paizi, Despina; Zoccolotti, Pierluigi; Burani, Cristina

    2011-01-01

    Stress assignment to Italian polysyllabic words is unpredictable, because stress is neither marked nor predicted by rule. Stress assignment, especially to low frequency words, has been reported to be a function of stress dominance and stress neighbourhood. Two experiments investigate stress assignment in sixth-grade, skilled and dyslexic, readers.…

  15. Concentration of frequencies of trapped waves in problems on freely floating bodies

    SciTech Connect

    Nazarov, Sergei A

    2012-09-30

    It is shown that by choosing the shape of two identical bodies floating freely in a channel with symmetric cross-section it is possible to form any pre-assigned number of linearly independent trapped waves (localized solutions). Bibliography: 27 titles.

  16. Novel frequency domain techniques and advances in Finite Difference Time domain (FDTD) method for efficient solution of multiscale electromagnetic problems

    NASA Astrophysics Data System (ADS)

    Panayappan, Kadappan

    With the advent of sub-micron technologies and increasing awareness of Electromagnetic Interference and Compatibility (EMI/EMC) issues, designers are often interested in full- wave solutions of complete systems, taking to account a variety of environments in which the system operates. However, attempts to do this substantially increase the complexities involved in computing full-wave solutions, especially when the problems involve multi- scale geometries with very fine features. For such problems, even the well-established numerical methods, such as the time domain technique FDTD and the frequency domain methods FEM and MoM, are often challenged to the limits of their capabilities. In an attempt to address such challenges, three novel techniques have been introduced in this work, namely Dipole Moment (DM) Approach, Recursive Update in Frequency Domain (RUFD) and New Finite Difference Time Domain ( vFDTD). Furthermore, the efficacy of the above techniques has been illustrated, via several examples, and the results obtained by proposed techniques have been compared with other existing numerical methods for the purpose of validation. The DM method is a new physics-based approach for formulating MoM problems, which is based on the use of dipole moments (DMs), as opposed to the conventional Green's functions. The absence of the Green's functions, as well as those of the vector and scalar potentials, helps to eliminate two of the key sources of difficulties in the conventional MoM formulation, namely the singularity and low-frequency problems. Specifically, we show that there are no singularities that we need to be concerned with in the DM formulation; hence, this obviates the need for special techniques for integrating these singularities. Yet another salutary feature of the DM approach is its ability to handle thin and lossy structures, or whether they are metallic, dielectric-type, or even combinations thereof. We have found that the DM formulation can handle these

  17. The Relationship between Frequency of Family Dinner and Adolescent Problem Behaviors after Adjusting for Other Family Characteristics

    ERIC Educational Resources Information Center

    Sen, Bisakha

    2010-01-01

    Objective: To examine the association between frequency of family dinners (FFD) and selected problem behaviors for adolescents after adjusting for family connectedness, parental awareness, other family activities, and other potentially confounding factors. Methods: Data are drawn from the National Longitudinal Survey of Youth, 1997. The primary…

  18. Particle-Filter-Based Multisensor Fusion For Solving Low-Frequency Electromagnetic NDE Inverse Problems

    SciTech Connect

    Khan, T.; Ramuhalli, Pradeep; Dass, Sarat

    2011-06-30

    Flaw profile characterization from NDE measurements is a typical inverse problem. A novel transformation of this inverse problem into a tracking problem, and subsequent application of a sequential Monte Carlo method called particle filtering, has been proposed by the authors in an earlier publication [1]. In this study, the problem of flaw characterization from multi-sensor data is considered. The NDE inverse problem is posed as a statistical inverse problem and particle filtering is modified to handle data from multiple measurement modes. The measurement modes are assumed to be independent of each other with principal component analysis (PCA) used to legitimize the assumption of independence. The proposed particle filter based data fusion algorithm is applied to experimental NDE data to investigate its feasibility.

  19. Fleet Assignment Using Collective Intelligence

    NASA Technical Reports Server (NTRS)

    Antoine, Nicolas E.; Bieniawski, Stefan R.; Kroo, Ilan M.; Wolpert, David H.

    2004-01-01

    Product distribution theory is a new collective intelligence-based framework for analyzing and controlling distributed systems. Its usefulness in distributed stochastic optimization is illustrated here through an airline fleet assignment problem. This problem involves the allocation of aircraft to a set of flights legs in order to meet passenger demand, while satisfying a variety of linear and non-linear constraints. Over the course of the day, the routing of each aircraft is determined in order to minimize the number of required flights for a given fleet. The associated flow continuity and aircraft count constraints have led researchers to focus on obtaining quasi-optimal solutions, especially at larger scales. In this paper, the authors propose the application of this new stochastic optimization algorithm to a non-linear objective cold start fleet assignment problem. Results show that the optimizer can successfully solve such highly-constrained problems (130 variables, 184 constraints).

  20. Assignments That Work.

    ERIC Educational Resources Information Center

    Hashimoto, I.

    1986-01-01

    Suggests, on a humorous note, a game-plan for assignment justification and elaboration that utilizes, in a constructive and professional manner, the best of what is known about assignment-making. (EL)

  1. 47 CFR 78.18 - Frequency assignments.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... channel. Editorial Note: For Federal Register citations affecting § 78.18, see the List of CFR Sections... IEEE standard 100-1972 as amended. Group B Channels Designation Channel boundaries (GHz) B01 1 12.7125...: Polarization designations shall be in accordance with IEEE standard 100-1972 as amended. (2) CARS...

  2. 47 CFR 74.602 - Frequency assignment.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... stations (CARS) operating between 12,700 and 13,200 MHz. Auxiliary stations licensed to low power TV... with and must accept interference from current and future full-power UHF-TV stations, LPTV stations...-13.20 GHz is reserved for television pickup and CARS pickup stations inside a 50 km radius of the...

  3. 47 CFR 74.602 - Frequency assignment.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... stations (CARS) operating between 12,700 and 13,200 MHz. Auxiliary stations licensed to low power TV... with and must accept interference from current and future full-power UHF-TV stations, LPTV stations...-13.20 GHz is reserved for television pickup and CARS pickup stations inside a 50 km radius of the...

  4. 47 CFR 74.602 - Frequency assignment.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... current and future full-power UHF-TV stations, LPTV stations, and translator stations. They will also be... CARS pickup stations inside a 50 km radius of the 100 television markets delineated in § 76.51 of this..., television pickup stations, CARS stations and NGSO FSS gateway earth stations shall operate on a primary...

  5. 47 CFR 74.602 - Frequency assignment.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... stations (CARS) operating between 12,700 and 13,200 MHz. Auxiliary stations licensed to low power TV... with and must accept interference from current and future full-power UHF-TV stations, LPTV stations...-13.20 GHz is reserved for television pickup and CARS pickup stations inside a 50 km radius of the...

  6. 47 CFR 74.602 - Frequency assignment.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... current and future full-power UHF-TV stations, LPTV stations, and translator stations. They will also be... CARS pickup stations inside a 50 km radius of the 100 television markets delineated in § 76.51 of this..., television pickup stations, CARS stations and NGSO FSS gateway earth stations shall operate on a primary...

  7. 47 CFR 74.802 - Frequency assignment.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ....000-88.000 MHz: Zone I 105 km (65 miles) Zones II and III 129 km (80 miles) (2) 174.000-216.000 MHz... low power auxiliary station in the affected market area must cease operation within 60 days. (iii)...

  8. 47 CFR 74.502 - Frequency assignment.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... of November 21, 1984, to operate in the band 942-944 MHz 1 may continue to operate on a co-equal, primary basis to other stations and services operating in the band in accordance with the Table of... the band by the technical standards specified in § 101.105(c)(2). 1 Note: In addition to this...

  9. 47 CFR 74.502 - Frequency assignment.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... of November 21, 1984, to operate in the band 942-944 MHz 1 may continue to operate on a co-equal, primary basis to other stations and services operating in the band in accordance with the Table of... the band by the technical standards specified in § 101.105(c)(2). 1 Note: In addition to this...

  10. 47 CFR 101.147 - Frequency assignments.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ...-Government space research earth stations for telecommand purposes in connection with deep space research. (8... Radiocommunications Services. (9) The band segments 10.95-11.2 and 11.45-11.7 GHz are shared with space stations (space to earth) in the fixed-satellite service. (10) This band is co-equally shared with stations in...

  11. REVIEWS OF TOPICAL PROBLEMS: New phenomena in the low-frequency dynamics of magnetic domain ensembles

    NASA Astrophysics Data System (ADS)

    Kandaurova, Gerta S.

    2002-10-01

    Research into the phenomenon of dynamic self-organization and the excited ('anger') state of multidomain magnetic films with perpendicular anisotropy is reviewed. The phenomenon was dicsovered in 1988 when studying the domain structure of iron garnet films in low-frequency (0.1-10 kHz) ac magnetic fields.

  12. Talk Aloud Problem Solving: Exploration of Acquisition and Frequency Building in Science Text

    ERIC Educational Resources Information Center

    Dembek, Ginny

    2013-01-01

    Discovering new ways to help students attain higher levels of scientific knowledge and to think critically is a national goal (Educate to Innovate campaign). Despite the best intentions, many students struggle to achieve a basic level of science knowledge (NAEP, 2011). The present study examined Talk Aloud Pair Problem Solving and frequency…

  13. A scheme for noise suppression and spectral enhancement of speech to alleviate speech reception problems from loss of frequency selectivity

    NASA Astrophysics Data System (ADS)

    Lyzenga, Johannes; Festen, Joost M.; Houtgast, Tammo

    2002-05-01

    Even after sufficient amplification, hearing-impaired listeners often experience problems in understanding speech under noisy conditions. This may be caused by suprathreshold deficits such as loss of compression and reduced frequency selectivity. In this project we investigate a scheme in which speech and noise are processed before presentation to try and alleviate intelligibility problems caused by reduced frequency selectivity. The scheme contains three strategies, one in which the peak-to-valley ratios of selected modulations in the speech spectrum are enlarged, a second in which the overall speech spectrum is modified, and a third in which noise is suppressed before the two enhancement steps. An overlap-and-add (OLA) algorithm is used in the implementation. The effect of the speech processing is evaluated by measuring speech-reception thresholds (SRT) for sentences in speech noise, estimating the signal-to-noise ratio at which listeners can correctly reproduce 50% of presented sentences. Hearing-impaired and normal-hearing listeners were used. To simulate the hearing impairment resulting from a loss of frequency selectivity, we spectrally smeared the stimuli presented to the normal-hearing listeners. We found that the preprocessing scheme achieved a modest improvement of nearly 2 dB in the SRT for normal-hearing listeners. Data for hearing-impaired listeners are presently being collected.

  14. Solving the EEG inverse problem based on space-time-frequency structured sparsity constraints.

    PubMed

    Castaño-Candamil, Sebastián; Höhne, Johannes; Martínez-Vargas, Juan-David; An, Xing-Wei; Castellanos-Domínguez, German; Haufe, Stefan

    2015-09-01

    We introduce STOUT (spatio-temporal unifying tomography), a novel method for the source analysis of electroencephalograpic (EEG) recordings, which is based on a physiologically-motivated source representation. Our method assumes that only a small number of brain sources are active throughout a measurement, where each of the sources exhibits focal (smooth but localized) characteristics in space, time and frequency. This structure is enforced through an expansion of the source current density into appropriate spatio-temporal basis functions in combination with sparsity constraints. This approach combines the main strengths of two existing methods, namely Sparse Basis Field Expansions (Haufe et al., 2011) and Time-Frequency Mixed-Norm Estimates (Gramfort et al., 2013). By adjusting the ratio between two regularization terms, STOUT is capable of trading temporal for spatial reconstruction accuracy and vice versa, depending on the requirements of specific analyses and the provided data. Due to allowing for non-stationary source activations, STOUT is particularly suited for the localization of event-related potentials (ERP) and other evoked brain activity. We demonstrate its performance on simulated ERP data for varying signal-to-noise ratios and numbers of active sources. Our analysis of the generators of visual and auditory evoked N200 potentials reveals that the most active sources originate in the temporal and occipital lobes, in line with the literature on sensory processing. PMID:26048621

  15. Scaling Preference Data for Program Assignments.

    ERIC Educational Resources Information Center

    Carifio, James

    The present study devised a computerized assignment-by-preference algorithm for a ninth-grade exploratory curriculum. The problem addressed was one of maximally mapping all students into 8 of 12 vocational programs in terms of their preferences for studying each of the programs and the assignment restrictions established by the school. To minimize…

  16. Using Cognitive Science to Assign Test Weights.

    ERIC Educational Resources Information Center

    Bhaskar, R.; Dillard, Jesse F.

    1983-01-01

    Description of an objective method for assigning weights to questions on examinations includes discussions of classical test theory, knowledge organization, and how task analysis can be used to identify knowledge elements required to solve specific problems, rank them, and assign objective weights to exam questions using a Pareto distribution (7…

  17. A framework for solving atomistic phonon-structure scattering problems in the frequency domain using perfectly matched layer boundaries

    SciTech Connect

    Kakodkar, Rohit R.; Feser, Joseph P.

    2015-09-07

    We present a numerical approach to the solution of elastic phonon-interface and phonon-nanostructure scattering problems based on a frequency-domain decomposition of the atomistic equations of motion and the use of perfectly matched layer (PML) boundaries. Unlike molecular dynamic wavepacket analysis, the current approach provides the ability to simulate scattering from individual phonon modes, including wavevectors in highly dispersive regimes. Like the atomistic Green's function method, the technique reduces scattering problems to a system of linear algebraic equations via a sparse, tightly banded matrix regardless of dimensionality. However, the use of PML boundaries enables rapid absorption of scattered wave energies at the boundaries and provides a simple and inexpensive interpretation of the scattered phonon energy flux calculated from the energy dissipation rate in the PML. The accuracy of the method is demonstrated on connected monoatomic chains, for which an analytic solution is known. The parameters defining the PML are found to affect the performance and guidelines for selecting optimal parameters are given. The method is used to study the energy transmission coefficient for connected diatomic chains over all available wavevectors for both optical and longitudinal phonons; it is found that when there is discontinuity between sublattices, even connected chains of equivalent acoustic impedance have near-zero transmission coefficient for short wavelengths. The phonon scattering cross section of an embedded nanocylinder is calculated in 2D for a wide range of frequencies to demonstrate the extension of the method to high dimensions. The calculations match continuum theory for long-wavelength phonons and large cylinder radii, but otherwise show complex physics associated with discreteness of the lattice. Examples include Mie oscillations which terminate when incident phonon frequencies exceed the maximum available frequency in the embedded nanocylinder, and

  18. Fleet Assignment Using Collective Intelligence

    NASA Technical Reports Server (NTRS)

    Antoine, Nicolas E.; Bieniawski, Stefan R.; Kroo, Ilan M.; Wolpert, David H.

    2004-01-01

    Airline fleet assignment involves the allocation of aircraft to a set of flights legs in order to meet passenger demand, while satisfying a variety of constraints. Over the course of the day, the routing of each aircraft is determined in order to minimize the number of required flights for a given fleet. The associated flow continuity and aircraft count constraints have led researchers to focus on obtaining quasi-optimal solutions, especially at larger scales. In this paper, the authors propose the application of an agent-based integer optimization algorithm to a "cold start" fleet assignment problem. Results show that the optimizer can successfully solve such highly- constrained problems (129 variables, 184 constraints).

  19. The Failed Writing Assignment.

    ERIC Educational Resources Information Center

    Swyt, Wendy

    1995-01-01

    Discusses an unsuccessful English 101 writing assignment in which students were asked to analyze a Gary Larson cartoon. Examines critically the type of assignment that seeks to address and incorporate the student writer's "local knowledge" of cultural texts, while at the same time containing what counts as knowledge within limited parameters of…

  20. Cubic Icosahedra? A Problem in Assigning Symmetry

    ERIC Educational Resources Information Center

    Lloyd, D. R.

    2010-01-01

    There is a standard convention that the icosahedral groups are classified separately from the cubic groups, but these two symmetry types have been conflated as "cubic" in some chemistry textbooks. In this note, the connection between cubic and icosahedral symmetries is examined, using a simple pictorial model. It is shown that octahedral and…

  1. An approach for large-scale gyroscopic eigenvalue problems with application to high-frequency response of rolling tires

    NASA Astrophysics Data System (ADS)

    Brinkmeier, Maik; Nackenhorst, Udo

    2008-03-01

    The transient dynamic response of rolling tires is of essential importance for comfort questions, e.g. noise radiation. Whereas finite element models are well established for stationary rolling simulations, it lacks computational methods for the treatment of the high frequency response. One challenge is the large mode density of tire structures that is up to the acoustic frequency domain and another lies on the physically correct description of rolling (gyroscopic) structures. Despite that the eigenvalue analysis of gyroscopic systems, described by complex-valued quadratic eigenvalue systems, seems to be well understood in general, specific problems arise for the computability of large scale three-dimensional tire models. In this presentation an overall computational strategy for the high frequency response of FE-tire models is outlined, where special emphasis is placed upon the efficient numerical treatment of the complex-valued eigenproblems for large scale gyroscopic systems. The practicability of the proposed approach will be demonstrated by the analysis of detailed finite element tire models. The physical interpretation of the computational results is also discussed in detail.

  2. Frequency of gambling problems among parents of pathological, versus nonpathological, casino gamblers using slot machines.

    PubMed

    Versini, Audrey; LeGauffre, Cindy; Romo, Lucia; Adès, Jean; Gorwood, Philip

    2012-01-01

    Familial and twin studies suggest the implication of a genetic factor in pathological gambling, but mainly assess probands through treatment settings or advertisements. The question raised here is: are parents of casino pathological gamblers using slot machines more affected with pathological gambling than nonpathological gamblers, all interviewed on site at the same casino? Three hundred and fifty-five casino gamblers on slot machines, which included 96 pathological gamblers, 116 problem gamblers, and 143 nonproblem gamblers, were recruited in situ at the largest casino in the Paris suburbs. We evaluated pathological gambling and two addictive disorders (alcohol dependence and tobacco consumption) in the gamblers and their 690 parents (through the proband). Familial aggregation of pathological gambling was confirmed, with a risk of 3.3 for being a pathological gambler when at least one of the parents has problematic gambling. No familial co-aggregation of pathological gambling with alcohol or tobacco dependence was observed. Pathological gambling is found in excess in the parents of pathological casino gamblers, in accordance with previous aggregation studies devoted to other types of gambling, and with studies recruiting gamblers in different settings. 

  3. Optimal processor assignment for pipeline computations

    NASA Technical Reports Server (NTRS)

    Nicol, David M.; Simha, Rahul; Choudhury, Alok N.; Narahari, Bhagirath

    1991-01-01

    The availability of large scale multitasked parallel architectures introduces the following processor assignment problem for pipelined computations. Given a set of tasks and their precedence constraints, along with their experimentally determined individual responses times for different processor sizes, find an assignment of processor to tasks. Two objectives are of interest: minimal response given a throughput requirement, and maximal throughput given a response time requirement. These assignment problems differ considerably from the classical mapping problem in which several tasks share a processor; instead, it is assumed that a large number of processors are to be assigned to a relatively small number of tasks. Efficient assignment algorithms were developed for different classes of task structures. For a p processor system and a series parallel precedence graph with n constituent tasks, an O(np2) algorithm is provided that finds the optimal assignment for the response time optimization problem; it was found that the assignment optimizing the constrained throughput in O(np2log p) time. Special cases of linear, independent, and tree graphs are also considered.

  4. Designing Cyber-Assignments.

    ERIC Educational Resources Information Center

    Drogemuller, Richard

    1997-01-01

    Recommends that teachers prevent plagiarism by structuring research assignments so that copying material from references is very difficult. Suggests that teachers be specific, select relevant topics, and insist on full referencing. (DDR)

  5. My Favorite Assignment.

    ERIC Educational Resources Information Center

    Post, Robert E.; Johnson, Jack E.

    1982-01-01

    Presents two assignments that show (1) how George Orwell's "Politics and the English Language" can be applied to business writing and (2) how structured student-teacher conferences can generate enthusiasm for oral expression in a business communication course. (AEA)

  6. Personal Writing Assignments.

    ERIC Educational Resources Information Center

    Connors, Robert J.

    1987-01-01

    Examines one element of rhetorical history--the sorts of subjects teachers have assigned students and their change from objective, centripetal writing tasks to subjective, centrifugal tasks. Documents the historical evolution of rhetorical tradition. (AEW)

  7. Decentralized Dynamic Sub-Carrier Assignment for OFDMA-Based Adhoc and Cellular Networks

    NASA Astrophysics Data System (ADS)

    Nguyen, Van-Duc; Haas, Harald; Kyamakya, Kyandoghere; Chedjou, Jean-Chamerlain; Nguyen, Tien-Hoa; Yoon, Seokho; Choo, Hyunseung

    In this paper, a novel decentralised dynamic sub-carrier assignment (DSA) algorithm for orthogonal frequency division multiple access (OFDMA)-based adhoc and cellular networks operating in time division duplexing (TDD) mode is proposed to solve the hidden and exposed node problem in media access control (MAC). This method reduces the co-channel interference (CCI), and thus increases the overall throughput of the network. Reduced CCI and increased throughput can be achieved, if time and frequency selectivity of the multi-path fading channel and the channel reciprocity offered by the TDD are fully exploited. The time and frequency selectivity of the channel are usually the main problem in mobile communication. However, in the context of channel assignment for OFDMA-based networks in TDD mode, the time and frequency selectivity of the channel are the key to reduce the interference. In the proposed channel assignment mechanism, several clusters of sub-carriers are assigned for data transmission between a transmitter and a receiver only if the corresponding channels of those sub-carriers linking this transmitter to potential victim receivers are deeply faded. In addition, the proposed algorithm works in a fully decentralised fashion and, therefore, it is able to effectively support ad hoc and multihop communication as well as network self-organisation. Numerical results show that the throughput obtained by the proposed approach for a given quality of service is higher than those of the conventional methods in any precondition of adhoc geographic scenario.

  8. 42 CFR 433.146 - Rights assigned; assignment method.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 4 2011-10-01 2011-10-01 false Rights assigned; assignment method. 433.146 Section 433.146 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN... Assignment of Rights to Benefits § 433.146 Rights assigned; assignment method. (a) Except as specified...

  9. 42 CFR 433.146 - Rights assigned; assignment method.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 4 2010-10-01 2010-10-01 false Rights assigned; assignment method. 433.146 Section 433.146 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN... Assignment of Rights to Benefits § 433.146 Rights assigned; assignment method. (a) Except as specified...

  10. Optimization of orbital assignment and specification of service areas in satellite communications

    NASA Technical Reports Server (NTRS)

    Wang, Cou-Way; Levis, Curt A.; Buyukdura, O. Merih

    1987-01-01

    The mathematical nature of the orbital and frequency assignment problem for communications satellites is explored, and it is shown that choosing the correct permutations of the orbit locations and frequency assignments is an important step in arriving at values which satisfy the signal-quality requirements. Two methods are proposed to achieve better spectrum/orbit utilization. The first, called the delta S concept, leads to orbital assignment solutions via either mixed-integer or restricted basis entry linear programming techniques; the method guarantees good single-entry carrier-to-interference ratio results. In the second, a basis for specifying service areas is proposed for the Fixed Satellite Service. It is suggested that service areas should be specified according to the communications-demand density in conjunction with the delta S concept in order to enable the system planner to specify more satellites and provide more communications supply.

  11. OptAssign--A Web-Based Tool for Assigning Students to Groups

    ERIC Educational Resources Information Center

    Meyer, David

    2009-01-01

    A frequent task in educational settings is to assign students to groups based on stated preferences for some projects or topics. This paper introduces a web-based tool supporting both the work flow of collecting student data and the group formation. The latter is based on finding optimal solutions to suitable mathematical assignment problems,…

  12. Generalised Assignment Matrix Methodology in Linear Programming

    ERIC Educational Resources Information Center

    Jerome, Lawrence

    2012-01-01

    Discrete Mathematics instructors and students have long been struggling with various labelling and scanning algorithms for solving many important problems. This paper shows how to solve a wide variety of Discrete Mathematics and OR problems using assignment matrices and linear programming, specifically using Excel Solvers although the same…

  13. Principals Make Assignments Matter

    ERIC Educational Resources Information Center

    Dougherty, Eleanor

    2013-01-01

    The inner-city high school in Washington, DC, that Guillaume Gendre joined as an assistant principal had a modest reputation for achievement but was nevertheless challenged to raise expectations for student work. In other schools, Gendre had used assignments--a specific kind of instructional task in which students are charged to think about an…

  14. Learning through Writing: Teaching Critical Thinking Skills in Writing Assignments

    ERIC Educational Resources Information Center

    Cavdar, Gamze; Doe, Sue

    2012-01-01

    Traditional writing assignments often fall short in addressing problems in college students' writing as too often these assignments fail to help students develop critical thinking skills and comprehension of course content. This article reports the use of a two-part (staged) writing assignment with postscript as a strategy for improving critical…

  15. Now you Bayes, now you don't: effects of set-problem and frequency-format mental representations on statistical reasoning.

    PubMed

    Sirota, Miroslav; Kostovičová, Lenka; Vallée-Tourangeau, Frédéric

    2015-10-01

    People appear to be Bayesian when statistical information is presented in terms of natural frequencies and non-Bayesian when presented in terms of single-event probabilities, unless the probabilities resemble natural frequencies, for example, as chances. The isomorphic format of chances, however, does not always facilitate performance to the extent that the format of natural frequencies does. Prior research has not addressed the underlying mechanism that accounts for this gap despite its theoretical significance. The mechanism explaining this external format gap could lie in the interpretation of the problem as a set-problem, which cues relevant problem model and arithmetic operations (the problem interpretation hypothesis) and/or in the interpretation of the format as frequencies, which may be easier to process (the format interpretation hypothesis). In two parallel experiments, we found support for the problem interpretation hypothesis only: set representations mediated solely the isomorphic format gap (Experiment 1: part A) and accounted for the transfer effect to natural frequencies (Experiment 1: part B); priming set representations improved performance with chances (Experiment 2). We discuss how the supported explanation corroborates the nested-sets rather than the ecological rationality account of statistical reasoning and how it helps explain individual differences in Bayesian reasoning.

  16. A new slant on the inverse problems of electromagnetic frequency sounding: 'convexification' of a multiextremal objective function via the Carleman weight functions

    NASA Astrophysics Data System (ADS)

    Klibanov, Michael V.; Timonov, Alexandre

    2001-12-01

    Some coefficient inverse problems of electromagnetic frequency sounding of inhomogeneous media are considered. Such problems occur in many areas of applied physics, such as the geophysical exploration of gas, oil and mineral deposits, reservoir monitoring, marine acoustics and electromagnetics, optical sensing, and radio physics. Reformulating these problems in terms of nonlinear least squares, also known in the applied literature as matched field processing, often leads to a multiextremal and multidimensional objective function. This makes it extremely difficult to find its global extremum which corresponds to the solution of the original problem. It is shown in this paper that an inverse problem of frequency sounding can first be identically transformed to a certain boundary value problem which does not explicitly contain an unknown coefficient. The nonlinear least squares are then applied to the transformed problem. Using the weight functions associated with the Carleman estimates for the Laplace operator, an objective function is constructed in such a way that it is strictly convex on a certain compact set. The feasibility of the proposed approach is demonstrated in computational experiments with a model problem of magnetotelluric frequency sounding of layered media.

  17. Gain weighted eigenspace assignment

    NASA Technical Reports Server (NTRS)

    Davidson, John B.; Andrisani, Dominick, II

    1994-01-01

    This report presents the development of the gain weighted eigenspace assignment methodology. This provides a designer with a systematic methodology for trading off eigenvector placement versus gain magnitudes, while still maintaining desired closed-loop eigenvalue locations. This is accomplished by forming a cost function composed of a scalar measure of error between desired and achievable eigenvectors and a scalar measure of gain magnitude, determining analytical expressions for the gradients, and solving for the optimal solution by numerical iteration. For this development the scalar measure of gain magnitude is chosen to be a weighted sum of the squares of all the individual elements of the feedback gain matrix. An example is presented to demonstrate the method. In this example, solutions yielding achievable eigenvectors close to the desired eigenvectors are obtained with significant reductions in gain magnitude compared to a solution obtained using a previously developed eigenspace (eigenstructure) assignment method.

  18. Vibrational assignments of 2-iodopyridine

    NASA Astrophysics Data System (ADS)

    Sortur, Veenasangeeta; Yenagi, Jayashree; Tonannavar, J.

    2008-02-01

    A review of the vibrational assignments for 2-iodopyridine has been proposed based on the FT-Raman (3500-50 cm -1) and IR (4000-400 cm -1) spectral measurements. Equilibrium geometries and vibrational frequencies have been computed from a variety of electronic structure methods: the ab initio (RHF), six DFT (BLYP, BP86, B3LYP, B3P86, B3PW91 and SVWN) and MP2 methods using 3-21G*, LANL2DZ and DGDZVP basis sets. A normal coordinate analysis has been carried out: the normal modes and their couplings are characterized in terms of potential energy distributions (PEDs). The comparison of assignments for pyridine and halopyridines shows that several of the normal modes arise from coupled vibrations in 2-iodopyridine. The BP86 and B3LYP methods with LANL2DZ basis set have performed reasonably well in reproducing the observed spectra, demonstrating that the LANL2DZ basis set (with effective core potential representations of electrons near the nuclei for post-third row atoms) is suitable for 2-iodopyridine.

  19. Optimal Assignment Problem Applications of Finite Mathematics to Business and Economics. [and] Difference Equations with Applications. Applications of Difference Equations to Economics and Social Sciences. [and] Selected Applications of Mathematics to Finance and Investment. Applications of Elementary Algebra to Finance. [and] Force of Interest. Applications of Calculus to Finance. UMAP Units 317, 322, 381, 382.

    ERIC Educational Resources Information Center

    Gale, David; And Others

    Four units make up the contents of this document. The first examines applications of finite mathematics to business and economies. The user is expected to learn the method of optimization in optimal assignment problems. The second module presents applications of difference equations to economics and social sciences, and shows how to: 1) interpret…

  20. Evaluation of Dynamic Channel and Power Assignment for Cognitive Networks

    SciTech Connect

    Syed A. Ahmad; Umesh Shukla; Ryan E. Irwin; Luiz A. DaSilva; Allen B. MacKenzie

    2011-03-01

    In this paper, we develop a unifying optimization formulation to describe the Dynamic Channel and Power Assignment (DCPA) problem and evaluation method for comparing DCPA algorithms. DCPA refers to the allocation of transmit power and frequency channels to links in a cognitive network so as to maximize the total number of feasible links while minimizing the aggregate transmit power. We apply our evaluation method to five algorithms representative of DCPA used in literature. This comparison illustrates the tradeoffs between control modes (centralized versus distributed) and channel/power assignment techniques. We estimate the complexity of each algorithm. Through simulations, we evaluate the effectiveness of the algorithms in achieving feasible link allocations in the network, as well as their power efficiency. Our results indicate that, when few channels are available, the effectiveness of all algorithms is comparable and thus the one with smallest complexity should be selected. The Least Interfering Channel and Iterative Power Assignment (LICIPA) algorithm does not require cross-link gain information, has the overall lowest run time, and highest feasibility ratio of all the distributed algorithms; however, this comes at a cost of higher average power per link.

  1. Evolution of Protein Lipograms: A Bioinformatics Problem

    ERIC Educational Resources Information Center

    White, Harold B., III; Dhurjati, Prasad

    2006-01-01

    A protein lacking one of the 20 common amino acids is a protein lipogram. This open-ended problem-based learning assignment deals with the evolution of proteins with biased amino acid composition. It has students query protein and metabolic databases to test the hypothesis that natural selection has reduced the frequency of each amino acid…

  2. Pathways to assignment of payees.

    PubMed

    Rosen, Marc I; Ablondi, Karen; Black, Anne C; Serowik, Kristin L; Rowe, Michael

    2014-04-01

    How clients come to be assigned representative payees and/or conservators to manage their funds is not well understood. We compared clients assigned a payee during a clinical trial of a money management-based intervention to those not assigned payees and examined antecedents to payee assignment. One year after randomization, significantly more clients assigned to the advisor teller money manager (ATM) money management intervention were assigned payees than participants in the control condition (10 of 47 vs. 2 of 43; p = .02); those assigned payees had lower baseline GAF scores and participated more in study therapies. Several ATM clients were assigned payees after third parties paid more attention to clients' finances, and others after having negotiated storage of their funds with the ATM money manager during the study. Assignment of payees appears to be influenced by whether third parties critically attend to how clients' manage funds and by clients' receptiveness to having a payee.

  3. Alcohol Use Problems Mediate the Relation between Cannabis Use Frequency and College Functioning among Students Mandated to an Alcohol Diversion Program

    ERIC Educational Resources Information Center

    McChargue, Dennis E.; Klanecky, Alicia K.; Anderson, Jennifer

    2012-01-01

    The present study examined the degree to which alcohol use problems explained the relationship between cannabis use frequency and college functioning. Undergraduates (N = 546) mandated to an alcohol diversion program at a Midwestern United States university completed screening questionnaires between October 2003 and April 2006. Sobel's (1982) test…

  4. COMPONENTS OF LASER SYSTEMS AND STABILITY PROBLEMS: High-frequency CO2 waveguide with optothermal and optogalvanic stabilization of the radiation frequency and power

    NASA Astrophysics Data System (ADS)

    Anufriev, É. V.; Biryulin, V. P.; Gerasimchuk, A. G.; Kornilov, S. T.; Ovechkin, V. A.; Ostreĭkovskiĭ, I. V.; Protsenko, E. D.

    1988-08-01

    Optothermal and optogalvanic stabilization of a CO2 waveguide laser with selective and nonselective resonators and with hf excitation of the active medium was investigated. The optothermal method ensured stability of the average signal frequency amounting to 3×10-10 τ -1/2, whereas the stability achieved by the optogalvanic method was 1.5×10-9 τ -1/2 for averaging times of 0.01 <= τ <= 10 s. The optogalvanic method ensured that the power of a laser with resonators of different types was stable to within 0.2%.

  5. Integrated assignment and path planning

    NASA Astrophysics Data System (ADS)

    Murphey, Robert A.

    2005-11-01

    A surge of interest in unmanned systems has exposed many new and challenging research problems across many fields of engineering and mathematics. These systems have the potential of transforming our society by replacing dangerous and dirty jobs with networks of moving machines. This vision is fundamentally separate from the modern view of robotics in that sophisticated behavior is realizable not by increasing individual vehicle complexity, but instead through collaborative teaming that relies on collective perception, abstraction, decision making, and manipulation. Obvious examples where collective robotics will make an impact include planetary exploration, space structure assembly, remote and undersea mining, hazardous material handling and clean-up, and search and rescue. Nonetheless, the phenomenon driving this technology trend is the increasing reliance of the US military on unmanned vehicles, specifically, aircraft. Only a few years ago, following years of resistance to the use of unmanned systems, the military and civilian leadership in the United States reversed itself and have recently demonstrated surprisingly broad acceptance of increasingly pervasive use of unmanned platforms in defense surveillance, and even attack. However, as rapidly as unmanned systems have gained acceptance, the defense research community has discovered the technical pitfalls that lie ahead, especially for operating collective groups of unmanned platforms. A great deal of talent and energy has been devoted to solving these technical problems, which tend to fall into two categories: resource allocation of vehicles to objectives, and path planning of vehicle trajectories. An extensive amount of research has been conducted in each direction, yet, surprisingly, very little work has considered the integrated problem of assignment and path planning. This dissertation presents a framework for studying integrated assignment and path planning and then moves on to suggest an exact

  6. Involving Students in Assignment Evaluation.

    ERIC Educational Resources Information Center

    Rademacher, Joyce A.

    2000-01-01

    The first part of this article explains the connection between planning, presenting, and evaluating assignments for students who demonstrate ineffective assignment completion strategies. The second part offers specific guidelines for teaching students to check their own finished assignments according to a set of quality work criteria. (Contains…

  7. Structural Case Assignment in Korean

    ERIC Educational Resources Information Center

    Koak, Heeshin

    2012-01-01

    In this dissertation, I aim to provide a theory on the distribution of structural Case in Korean. I propose the following Structural Case Assignment Hypothesis (SCAH) regarding the assignment of structural Case: "Structural Case is assigned by phase heads (C: nominative; v: accusative) to every argument in the c-command domain of the phase…

  8. Characteristics and Predictors of Health Problems from Use among High-Frequency Cannabis Users in a Canadian University Student Population

    ERIC Educational Resources Information Center

    Fischer, Benedikt; Dawe, Meghan; Mcguire, Fraser; Shuper, Paul A; Jones, Wayne; Rudzinski, Katherine; Rehm, Jurgen

    2012-01-01

    Aims: Assess key cannabis use, risk and outcome characteristics among high-frequency cannabis users within a university student sample in Toronto, Canada. Methods: N = 134 active universities students (ages of 18-28) using cannabis at least three times per week were recruited by mass advertisement, telephone-screened and anonymously assessed by an…

  9. Balanced input-output assignment

    NASA Technical Reports Server (NTRS)

    Gawronski, W.; Hadaegh, F. Y.

    1989-01-01

    Actuator/sensor locations and balanced representations of linear systems are considered for a given set of controllability and observability grammians. The case of equally controlled and observed states is given special attention. The assignability of grammians is examined, and the conditions for their existence are presented, along with several algorithms for their determination. Although an arbitrary positive semidefinite matrix is not always assignable, the identity grammian is shown to be always assignable. The results are extended to the case of flexible structures.

  10. REVIEWS OF TOPICAL PROBLEMS: Natural and man-made low-frequency magnetic fields as a potential health hazard

    NASA Astrophysics Data System (ADS)

    Ptitsyna, N. G.; Villoresi, G.; Dorman, L. I.; Iucci, N.; Tyasto, Marta I.

    1998-07-01

    Is human health affected by low-frequency low-intensity environmental magnetic fields? There is much diehard evidence that it is. For this reason irregular, spectrally complex ULF (0-10 Hz) magnetic fields have recently come under scrutiny, typical of natural geomagnetic perturbations or electric transportation. Recent work shows that such fields do affect the nervous system and may even cause heart attacks.

  11. Automated protein NMR resonance assignments.

    PubMed

    Wan, Xiang; Xu, Dong; Slupsky, Carolyn M; Lin, Guohui

    2003-01-01

    NMR resonance peak assignment is one of the key steps in solving an NMR protein structure. The assignment process links resonance peaks to individual residues of the target protein sequence, providing the prerequisite for establishing intra- and inter-residue spatial relationships between atoms. The assignment process is tedious and time-consuming, which could take many weeks. Though there exist a number of computer programs to assist the assignment process, many NMR labs are still doing the assignments manually to ensure quality. This paper presents (1) a new scoring system for mapping spin systems to residues, (2) an automated adjacency information extraction procedure from NMR spectra, and (3) a very fast assignment algorithm based on our previous proposed greedy filtering method and a maximum matching algorithm to automate the assignment process. The computational tests on 70 instances of (pseudo) experimental NMR data of 14 proteins demonstrate that the new score scheme has much better discerning power with the aid of adjacency information between spin systems simulated across various NMR spectra. Typically, with automated extraction of adjacency information, our method achieves nearly complete assignments for most of the proteins. The experiment shows very promising perspective that the fast automated assignment algorithm together with the new score scheme and automated adjacency extraction may be ready for practical use. PMID:16452794

  12. 42 CFR 433.146 - Rights assigned; assignment method.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 42 Public Health 4 2012-10-01 2012-10-01 false Rights assigned; assignment method. 433.146 Section 433.146 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL ASSISTANCE PROGRAMS STATE FISCAL ADMINISTRATION Third Party...

  13. 42 CFR 433.146 - Rights assigned; assignment method.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 4 2014-10-01 2014-10-01 false Rights assigned; assignment method. 433.146 Section 433.146 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL ASSISTANCE PROGRAMS STATE FISCAL ADMINISTRATION Third Party...

  14. 42 CFR 433.146 - Rights assigned; assignment method.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 42 Public Health 4 2013-10-01 2013-10-01 false Rights assigned; assignment method. 433.146 Section 433.146 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL ASSISTANCE PROGRAMS STATE FISCAL ADMINISTRATION Third Party...

  15. Fostering Critical Literacy: The Art of Assignment Design

    ERIC Educational Resources Information Center

    Wilner, Arlene

    2005-01-01

    Applying reading and writing theory to cases in composition, this chapter troubleshoots assignments that produced disappointing results and illustrates how the model of the "ill-structured problem" can help writing instructors craft assignments that foster the cognitive and affective maturation essential to college-level literacy. (Contains 2…

  16. On Automated Grading of Programming Assignments in an Academic Institution

    ERIC Educational Resources Information Center

    Cheang, Brenda; Kurnia, Andy; Lim, Andrew; Oon, Wee-Chong

    2003-01-01

    Practise is one of the most important steps in learning the art of computer programming. Unfortunately, human grading of programming assignments is a tedious and error-prone task, a problem compounded by the large enrolments of many programming courses. As a result, students in such courses tend to be given fewer programming assignments than…

  17. Improving load balance with flexibly assignable tasks

    SciTech Connect

    Pinar, Ali; Hendrickson, Bruce

    2003-09-09

    In many applications of parallel computing, distribution ofthe data unambiguously implies distribution of work among processors. Butthere are exceptions where some tasks can be assigned to one of severalprocessors without altering the total volume of communication. In thispaper, we study the problem of exploiting this flexibility in assignmentof tasks to improve load balance. We first model the problem in terms ofnetwork flow and use combinatorial techniques for its solution. Ourparametric search algorithms use maximum flow algorithms for probing on acandidate optimal solution value. We describe two algorithms to solve theassignment problem with \\logW_T and vbar P vbar probe calls, w here W_Tand vbar P vbar, respectively, denote the total workload and number ofproce ssors. We also define augmenting paths and cuts for this problem,and show that anyalgorithm based on augmenting paths can be used to findan optimal solution for the task assignment problem. We then consideracontinuous version of the problem, and formulate it as a linearlyconstrained optimization problem, i.e., \\min\\|Ax\\|_\\infty,\\; {\\rms.t.}\\;Bx=d. To avoid solving an intractable \\infty-norm optimization problem,we show that in this case minimizing the 2-norm is sufficient to minimizethe \\infty-norm, which reduces the problem to the well-studiedlinearly-constrained least squares problem. The continuous version of theproblem has the advantage of being easily amenable to parallelization.Our experiments with molecular dynamics and overlapped domaindecomposition applications proved the effectiveness of our methods withsignificant improvements in load balance. We also discuss how ourtechniques can be enhanced for heterogeneous systems.

  18. Key Words in Instruction Assignment.

    ERIC Educational Resources Information Center

    Callison, Daniel

    2000-01-01

    Discusses library-based assignments for information literacy and suggests the focus needs to change from information location to information use. Topics include online searching; reporting facts; more thoughtful research projects to develop skills; pitfalls of library assignments; and how to make information sources play a secondary role. (LRW)

  19. Powerful low-frequency vibrators and outlooks of their application at monitoring of engineering constructions and at solving other problems of active seismology

    SciTech Connect

    Alekseev, A. S.; Chichinin, I. S.; Korneev, V. A.; Komissarov, V. V.; Seleznev, V. S.; Emanov, A. F.

    2004-06-11

    In the past two decades, active seismology studies in Russia have made use of powerful (40- and 100-ton) low-frequency vibrators. These sources create a force amplitude of up to 100 tons and function in the 1.5-3, 3-6 and 5-10 Hz frequency bands. The mobile versions of the vibrator have a force amplitude of 40 tons and a 6-12 Hz frequency band. Registration distances for the 100 ton vibrator are as large as 350 km, enabling the refracted waves to penetrate down to 50 km depths. Vibrator operation sessions are highly repeatable, having distinct ''summer'' or ''winter'' spectral patterns. A long profile of seismic records allows estimating of fault zone depths using changes in recorded spectra. Other applications include deep seismic profiling, seismic hazard mapping, structural testing, stress induced anisotropy studies, seismic station calibration, and large-structure integrity testing. In more detail, these questions are discussed in reports of our colleagues from Novosibirsk. This report is devoted mainly to powerful low-frequency vibrators, their theoretical description and design. Besides, problems of vibroseismic monitoring of engineering constructions are briefly elucidated.

  20. An Assignment Sequence for Underprepared Writers.

    ERIC Educational Resources Information Center

    Nimmo, Kristi

    2000-01-01

    Presents a sequenced writing assignment on shopping to aid basic writers. Describes a writing assignment focused around online and mail-order shopping. Notes steps in preparing for the assignment, the sequence, and discusses responses to the assignments. (SC)

  1. Multiobjective controller synthesis via eigenstructure assignment with state feedback

    NASA Astrophysics Data System (ADS)

    Li, Zhao; Lam, James

    2016-10-01

    A general parameter scheme for multiobjective controller synthesis via eigenstructure assignment with state feedback is proposed. The scheme provides total pole configurability, that is, pole assignment constraints, partial pole assignment constraints, generalised regional pole assignment constraints can be dealt with simultaneously without introducing essential conservatism. The scheme is derived from the pole assignment approach using Sylvester equations, and the parameter space is the Cartesian product of some subspaces characterising the free parameters. Under the scheme, the controller design problems are formulated as nonlinear optimisation problems with both objectives and constraints being differentiable and can be solved by derivative-based nonlinear programming technique. Numerical examples are given to illustrate the efficiency of the proposed method.

  2. Exploiting Flexibly Assignable Work to Improve Load Balance

    SciTech Connect

    Pinar, Ali; Hendrickson, Bruce

    2002-12-09

    In many applications of parallel computing, distribution of the data unambiguously implies distribution of work among processors. But there are exceptions where some tasks can be assigned to one of several processors without altering the total volume of communication. In this paper, we study the problem of exploiting this flexibility in assignment of tasks to improve load balance. We first model the problem in terms of network flow and use combinatorial techniques for its solution. Our parametric search algorithms use maximum flow algorithms for probing on a candidate optimal solution value. We describe two algorithms to solve the assignment problem with log W{sub T} and |P| probe calls, where W{sub T} and |P|, respectively, denote the total workload and number of processors. We also define augmenting paths and cuts for this problem, and show that any algorithm based on augmenting paths can be used to find an optimal solution for the task assignment problem. We then consider a continuous version of the problem, and formulate it as a linearly constrained optimization problem, i.e., min ||Ax||{sub {infinity}}, s.t. Bx = d. To avoid solving an intractable {infinity}-norm optimization problem, we show that in this case minimizing the 2-norm is sufficient to minimize the {infinity}-norm, which reduces the problem to the well-studied linearly-constrained least squares problem. The continuous version of the problem has the advantage of being easily amenable to parallelization.

  3. Node assignment in heterogeneous computing

    NASA Technical Reports Server (NTRS)

    Som, Sukhamoy

    1993-01-01

    A number of node assignment schemes, both static and dynamic, are explored for the Algorithm to Architecture Mapping Model (ATAMM). The architecture under consideration consists of heterogeneous processors and implements dataflow models of real-time applications. Terminology is developed for heterogeneous computing. New definitions are added to the ATAMM for token and assignment classifications. It is proved that a periodic execution is possible for dataflow graphs. Assignment algorithms are developed and proved. A design procedure is described for satisfying an objective function in an heterogeneous architecture. Several examples are provided for illustration.

  4. Marijuana use and later problems: when frequency of recent use explains age of initiation effects (and when it does not).

    PubMed

    Ellickson, Phyllis L; D'Amico, Elizabeth J; Collins, Rebecca L; Klein, David J

    2005-01-01

    Tobacco, alcohol, and marijuana are among the most commonly used drugs during adolescence. Initiation of marijuana use typically peaks at age 15, with risk of initiation continuing throughout adolescence. The goal of the current study was to prospectively examine the influence of age of marijuana initiation on four outcomes: physical health, mental health, illicit drug use other than marijuana, and marijuana-use related consequences at age 18. We controlled for several important predictors of adolescent drug use and its associated consequences, including demographics, social bonding variables, personality variables, and recent use of marijuana. Baseline survey data were collected in 1984 at grade 7 and follow up surveys were conducted at grades 8, 9, 10, and 12 (N = 2079). This initiates-only sample was 47% female, 66% White, 11% African American, 13% Hispanic, 5% Asian, and 5% other race or ethnicity. Findings indicated that age of initiation predicted marijuana consequences and other illicit drug use after controlling for demographic, social, and behavioral factors. However, once frequency of recent marijuana use was included in the models, age of initiation was only associated with other illicit drug use. Both primary and secondary prevention are needed to curb marijuana use and its associated harms. PMID:15776981

  5. 47 CFR 87.303 - Frequencies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Frequencies. 87.303 Section 87.303... Flight Test Stations § 87.303 Frequencies. (a) These frequencies are available for assignment to flight....375 3 123.450 3 (b) These additional frequencies are available for assignment only to flight...

  6. 47 CFR 87.303 - Frequencies.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 5 2013-10-01 2013-10-01 false Frequencies. 87.303 Section 87.303... Flight Test Stations § 87.303 Frequencies. (a) These frequencies are available for assignment to flight....375 3 123.450 3 (b) These additional frequencies are available for assignment only to flight...

  7. 47 CFR 87.303 - Frequencies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Frequencies. 87.303 Section 87.303... Flight Test Stations § 87.303 Frequencies. (a) These frequencies are available for assignment to flight....375 3 123.450 3 (b) These additional frequencies are available for assignment only to flight...

  8. 47 CFR 87.303 - Frequencies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Frequencies. 87.303 Section 87.303... Flight Test Stations § 87.303 Frequencies. (a) These frequencies are available for assignment to flight....375 3 123.450 3 (b) These additional frequencies are available for assignment only to flight...

  9. 47 CFR 87.303 - Frequencies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Frequencies. 87.303 Section 87.303... Flight Test Stations § 87.303 Frequencies. (a) These frequencies are available for assignment to flight....375 3 123.450 3 (b) These additional frequencies are available for assignment only to flight...

  10. Toward a better understanding of structural divergences in proteins using different secondary structure assignment methods

    NASA Astrophysics Data System (ADS)

    Rocha, L. F. O.

    2014-04-01

    Structural disagreements on the location and quantity of secondary structure segments comprise a current challenging problem leading to several limitations for theoretical and applied research. This paper presents 116 structural evaluations by steric and hydrophobic interactions in secondary structures within a specific template group; determines simple prediction rules that calculate 88 occurrence frequencies of large and hydrophobic residues into target intra- and inter-subgroups with structure disagreements; and utilizes 42 comparisons between the methods PROMOTIF, DSSP and STRIDE. In the stereochemical predictions inside the subgroups there are predominantly excellent and/or good success amounts with their expected values, and the disclosure of a triple molecular mechanism by residue volumetric and hydrophobic ingredients. The method comparisons show high compatibility scores between them, therefore validating their seemingly incompatible assignments. Thus, the nonconsensual ascriptions are better understood and appreciated. Furthermore, such results suggest a broad utility of our assignment method for other benchmark datasets and known methods.

  11. Multi-frequency subspace migration for imaging of perfectly conducting, arc-like cracks in full- and limited-view inverse scattering problems

    NASA Astrophysics Data System (ADS)

    Park, Won-Kwang

    2015-02-01

    Multi-frequency subspace migration imaging techniques are usually adopted for the non-iterative imaging of unknown electromagnetic targets, such as cracks in concrete walls or bridges and anti-personnel mines in the ground, in the inverse scattering problems. It is confirmed that this technique is very fast, effective, robust, and can not only be applied to full- but also to limited-view inverse problems if a suitable number of incidents and corresponding scattered fields are applied and collected. However, in many works, the application of such techniques is heuristic. With the motivation of such heuristic application, this study analyzes the structure of the imaging functional employed in the subspace migration imaging technique in two-dimensional full- and limited-view inverse scattering problems when the unknown targets are arbitrary-shaped, arc-like perfectly conducting cracks located in the two-dimensional homogeneous space. In contrast to the statistical approach based on statistical hypothesis testing, our approach is based on the fact that the subspace migration imaging functional can be expressed by a linear combination of the Bessel functions of integer order of the first kind. This is based on the structure of the Multi-Static Response (MSR) matrix collected in the far-field at nonzero frequency in either Transverse Magnetic (TM) mode (Dirichlet boundary condition) or Transverse Electric (TE) mode (Neumann boundary condition). The investigation of the expression of imaging functionals gives us certain properties of subspace migration and explains why multi-frequency enhances imaging resolution. In particular, we carefully analyze the subspace migration and confirm some properties of imaging when a small number of incident fields are applied. Consequently, we introduce a weighted multi-frequency imaging functional and confirm that it is an improved version of subspace migration in TM mode. Various results of numerical simulations performed on the far

  12. Inverse problem in ionospheric science: prediction of solar soft-X-ray spectrum from very low frequency radiosonde results

    NASA Astrophysics Data System (ADS)

    Palit, S.; Ray, S.; Chakrabarti, S. K.

    2016-05-01

    X-rays and gamma-rays from astronomical sources such as solar flares are mostly absorbed by the Earth's atmosphere. Resulting electron-ion production rate as a function of height depends on the intensity and wavelength of the injected spectrum and therefore the effects vary from one source to another. In other words, the ion density vs. altitude profile has the imprint of the incident photon spectrum. In this paper, we investigate whether we can invert the problem uniquely by deconvolution of the VLF amplitude signal to obtain the details of the injected spectrum. We find that it is possible to do this up to a certain accuracy. This leads us to the possibility of uninterrupted observation of X-ray photon spectra of solar flares that are often hindered by the restricted observation window of space satellites to avoid charge particle damages. Such continuous means of observation are essential in deriving information on time evolution of physical processes related to electron acceleration and interaction with plasma in solar atmosphere. Our method is useful to carry out a similar exercise to infer the spectra of more energetic events such as the Gamma Ray Bursts (GRBs), Soft Gamma-ray Repeaters (SGRs) etc., by probing even the lower part of the Earth's atmosphere. We thus show that to certain extent, the Earth's atmosphere could be used as a gigantic detector of relatively strong astronomical events.

  13. An Assessment of Health Behavior Peer Effects in Peking University Dormitories: A Randomized Cluster-Assignment Design for Interference

    PubMed Central

    Yuan, Changzheng; Lv, Jun; VanderWeele, Tyler J.

    2013-01-01

    Background Relatively little is known about the peer influence in health behaviors within university dormitory rooms. Moreover, in China, the problem of unhealthy behaviors among university students has not yet been sufficiently recognized. We thus investigated health behavior peer influence in Peking University dormitories utilizing a randomized cluster-assignment design. Methods Study design: Cross-sectional in-dormitory survey. Study population: Current students from Peking University Health Science Center from April to June, 2009. Measurement: Self-reported questionnaire on health behaviors: physical activity (including bicycling), dietary intake and tobacco use. Results Use of bicycle, moderate-intensity exercise, frequency of sweet food and soybean milk intake, frequency of roasted/baked/toasted food intake were behaviors significantly or marginally significantly affected by peer influence. Conclusion Health behavior peer effects exist within dormitory rooms among university students. This could provide guidance on room assignment, or inform intervention programs. Examining these may demand attention from university administrators and policy makers. PMID:24040377

  14. Assigning functional meaning to digital circuits

    SciTech Connect

    Eckmann, S.T.; Chisholm, G.H.

    1997-07-01

    During computer-aided design, the problem of how to determine the logical function of a digital circuit arises in many contexts. For example, assigning functional meaning to a circuit is a fundamental operation in both reverse engineering and implementation validation. This report describes such a determination by discussing how a higher-level functional representation is constructed from a detailed circuit description (i.e., a gate-level netlist, which is a list of logic gates and their interconnections). The approach used involves transforming parts of the netlist into a functional representation and then manipulating this representation. Two types of functional representations are described: (1) a mathematical representation based on the logical operators ``exor`` and ``and`` and (2) a directed acyclic graph representation based on binary decision trees. Each representation provides a canonical form of the logical function being implemented (i.e., a form that is independent of implementation details). Such forms, however, have a well-known problem associated with the ordering of inputs: for each order, a unique form exists. A solution to this problem is given for both representations. Experimental results that demonstrate the use of these representations in the process of assigning functional meaning to a circuit are provided. The report also identifies and discusses issues critical to the performance required of this fundamental operation.

  15. 47 CFR 90.621 - Selection and assignment of frequencies.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... affecting § 90.621, see the List of CFR Sections Affected, which appears in the Finding Aids section of the... 47° 30′ 14.4″ 122° 03′ 34.4″ Tiger Mountain 47° 30′ 13.4″ 121° 58′ 32.4″ Devils Mountain 48° 21′...

  16. 47 CFR 90.621 - Selection and assignment of frequencies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... pending. Editorial Notes 1. For Federal Register citations affecting § 90.621, see the List of CFR... 47° 30′ 14.4″ 122° 03′ 34.4″ Tiger Mountain 47° 30′ 13.4″ 121° 58′ 32.4″ Devils Mountain 48° 21′...

  17. 47 CFR 90.621 - Selection and assignment of frequencies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... affecting § 90.621, see the List of CFR Sections Affected, which appears in the Finding Aids section of the... 47° 30′ 14.4″ 122° 03′ 34.4″ Tiger Mountain 47° 30′ 13.4″ 121° 58′ 32.4″ Devils Mountain 48° 21′...

  18. 47 CFR 90.621 - Selection and assignment of frequencies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... affecting § 90.621, see the List of CFR Sections Affected, which appears in the Finding Aids section of the... 47° 30′ 14.4″ 122° 03′ 34.4″ Tiger Mountain 47° 30′ 13.4″ 121° 58′ 32.4″ Devils Mountain 48° 21′...

  19. 47 CFR 90.621 - Selection and assignment of frequencies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... pending. Editorial Notes 1. For Federal Register citations affecting § 90.621, see the List of CFR... 47° 30′ 14.4″ 122° 03′ 34.4″ Tiger Mountain 47° 30′ 13.4″ 121° 58′ 32.4″ Devils Mountain 48° 21′...

  20. 47 CFR 90.723 - Selection and assignment of frequencies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... this chapter, with a 9 dB correction factor for antenna height differential. The 10 dB protection to... correction factor for antenna height differential. ... Effective Separation distance (kilometers) Radiated power (watts) 1 0.0-0.3 (2) 0.3-0.5 5 0.5-0.6 10...

  1. 47 CFR 90.723 - Selection and assignment of frequencies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... this chapter, with a 9 dB correction factor for antenna height differential. The 10 dB protection to... correction factor for antenna height differential. ... Effective Separation distance (kilometers) Radiated power (watts) 1 0.0-0.3 (2) 0.3-0.5 5 0.5-0.6 10...

  2. 47 CFR 90.723 - Selection and assignment of frequencies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... this chapter, with a 9 dB correction factor for antenna height differential. The 10 dB protection to... correction factor for antenna height differential. ... Effective Separation distance (kilometers) Radiated power (watts) 1 0.0-0.3 (2) 0.3-0.5 5 0.5-0.6 10...

  3. 47 CFR 73.702 - Assignment and use of frequencies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... world into three Regions, which are defined in 47 CFR 2.104(b). The bands 7100-7300 kHz and 7400-7450 k... basis throughout the world, except in the countries listed in 47 CFR 2.106, footnote 5.143C where the... throughout the world: 5900-6200 kHz, 7300-7350 kHz, 9400-9900 kHz, 11600-12100 kHz, 13570-13870 kHz,...

  4. 47 CFR 73.702 - Assignment and use of frequencies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... divided the world into three Regions, which are defined in 47 CFR 2.104(b). The bands 7,200-7,300 kHz and...-primary: 7,350-7,400 kHz, except in the countries listed in 47 CFR 2.106, footnote 5.143C, where this band... international broadcasting bands; see 47 CFR 2.106, footnotes 5.136, 5.143, 5.143A, 5.143B, 5.143D, 5.146,...

  5. 47 CFR 73.702 - Assignment and use of frequencies.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... divided the world into three Regions, which are defined in 47 CFR 2.104(b). The bands 7,200-7,300 kHz and...-primary: 7,350-7,400 kHz, except in the countries listed in 47 CFR 2.106, footnote 5.143C, where this band... international broadcasting bands; see 47 CFR 2.106, footnotes 5.136, 5.143, 5.143A, 5.143B, 5.143D, 5.146,...

  6. Expert systems for personnel assignment

    SciTech Connect

    Hardee, J.L.; Liepins, G.

    1986-01-01

    In order to reduce stress on assignment personnel (detailers) and ensure maximum fairness and consistency in the Navy's personnel assignment process, The Navy Military Personnel Command (NMPC) has begun to explore the potential use of expert systems to supplement current manual and computerized distribution methods. The Detailer's Assistant expert system is being developed to improve the detailers' ability to satisfy the needs of their constituents and Navy management. An initial prototype of the Detailer's Assistant is now being evaluated. Numerous upgrades and extensions should lead to an operational system in the near future. Further development to a production system will involve additional research in machine learning, intelligent database methods, and cooperating expert systems.

  7. A Stochastic Employment Problem

    ERIC Educational Resources Information Center

    Wu, Teng

    2013-01-01

    The Stochastic Employment Problem(SEP) is a variation of the Stochastic Assignment Problem which analyzes the scenario that one assigns balls into boxes. Balls arrive sequentially with each one having a binary vector X = (X[subscript 1], X[subscript 2],...,X[subscript n]) attached, with the interpretation being that if X[subscript i] = 1 the ball…

  8. Puzzles & Problems.

    ERIC Educational Resources Information Center

    Murphy, Pat, Ed.

    1993-01-01

    "Exploring" is a magazine of science, art, and human perception, produced by Exploratorium in collaboration with other participating museums. This issue focuses on puzzles and problem solving. Brain teasers, puzzles, and the strategies for solving them are included. Features include: (1) "Homework Assignment #3" (Paul Doherty); (2) "The Case of…

  9. Some remarks on assignment maps

    NASA Astrophysics Data System (ADS)

    Masillo, F.; Scolarici, G.; Solombrino, L.

    2011-01-01

    We study the properties of general linear assignment maps, showing that positivity axiom can be suitably relaxed, and propose a new class of dynamical maps (generalized dynamics). A puzzling result, arising in such a context in quantum information theory, is also discussed.

  10. Who Benefits from Homework Assignments?

    ERIC Educational Resources Information Center

    Ronning, Marte

    2011-01-01

    Using Dutch data on pupils in elementary school this paper is the first empirical study to analyze whether assigning homework has a heterogeneous impact on pupil achievement. Addressing potential biases by using a difference-in-difference approach, I find that the test score gap is larger in classes where everybody gets homework than in classes…

  11. The Year of Secret Assignments

    ERIC Educational Resources Information Center

    Moriarty, Jaclyn

    2004-01-01

    The path to "novelist" was a convoluted one for Moriarty, who began writing fiction as doctoral student at Cambridge University. Her interest in young adults stems from an appreciation for the "troubles, strengths, and surprises of that age group." Now, in a uniquely formatted book titled "The Year of Secret Assignments," we peek inside the mind…

  12. Managing Large Volumes of Assignments

    ERIC Educational Resources Information Center

    Park, James; Hagen, John, Jr.

    2005-01-01

    In spring 2003, the Distance Education Network (DEN), Viterbi School of Engineering at the University of Southern California (USC), had 860 students and more than 1,000 enrollments in 70 courses toward 10 different degrees. Typically, for assignments in engineering courses, professors require students to show how their answers are derived so that…

  13. 47 CFR 24.839 - Transfer of control or assignment of license.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Transfers of Licenses for Frequency Blocks C and F won in closed bidding. No assignment or transfer of control of a license for frequency Block C or frequency Block F won in closed bidding pursuant to the... license(s) for frequency blocks C and F and, at the time of receipt of such license(s), met...

  14. 47 CFR 24.839 - Transfer of control or assignment of license.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Transfers of Licenses for Frequency Blocks C and F won in closed bidding. No assignment or transfer of control of a license for frequency Block C or frequency Block F won in closed bidding pursuant to the... license(s) for frequency blocks C and F and, at the time of receipt of such license(s), met...

  15. 47 CFR 24.839 - Transfer of control or assignment of license.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Transfers of Licenses for Frequency Blocks C and F won in closed bidding. No assignment or transfer of control of a license for frequency Block C or frequency Block F won in closed bidding pursuant to the... license(s) for frequency blocks C and F and, at the time of receipt of such license(s), met...

  16. 47 CFR 24.839 - Transfer of control or assignment of license.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Transfers of Licenses for Frequency Blocks C and F won in closed bidding. No assignment or transfer of control of a license for frequency Block C or frequency Block F won in closed bidding pursuant to the... license(s) for frequency blocks C and F and, at the time of receipt of such license(s), met...

  17. 47 CFR 24.839 - Transfer of control or assignment of license.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Transfers of Licenses for Frequency Blocks C and F won in closed bidding. No assignment or transfer of control of a license for frequency Block C or frequency Block F won in closed bidding pursuant to the... license(s) for frequency blocks C and F and, at the time of receipt of such license(s), met...

  18. [Frequency and distribution of sleep problems and insomnia in the adult population in Germany: results of the German Health Interview and Examination Survey for Adults (DEGS1)].

    PubMed

    Schlack, R; Hapke, U; Maske, U; Busch, M; Cohrs, S

    2013-05-01

    Sleep disturbances are associated with a variety of physical and mental health disorders and cause high direct and indirect economic costs. The aim of this study was to report the frequency and distribution of problems of sleep onset and maintaining sleep, sleep quality, effective sleep time, and the consumption of sleeping pills in the adult population in Germany. During the 4 weeks prior to the interview, about one third of the respondents reported potentially clinically relevant problems initiating or maintaining sleep; about one-fifth reported poor quality of sleep. When additionally considering impairments during the daytime such as daytime fatigue or exhaustion, a prevalence of 5.7 % for an insomnia syndrome was found. Women were twice as likely to be affected by insomnia-syndrome as men. Significant age differences were not seen. Persons with low socioeconomic status had an increased risk of insomnia (OR: 3.44) as did people residing in West Germany (OR: 1.53). Women with low socioeconomic status (OR: 4.12) and West German men (OR: 1.79) were more affected. The results illustrate the considerable public health relevance of insomnia-related sleep disturbances. An English full-text version of this article is available at SpringerLink as supplemental. PMID:23703493

  19. Stress assignment in reading Italian: friendship outweighs dominance.

    PubMed

    Burani, Cristina; Paizi, Despina; Sulpizio, Simone

    2014-05-01

    Stress assignment to polysyllabic words is the only aspect of the pronunciation of written Italian that cannot be predicted by rule. It could be a function of stress dominance in the language or of stress neighborhood (i.e., the number of words sharing an ending and a stress pattern). In two experiments, we investigated stress assignment in Italian adult and, most importantly, young readers. Word frequency and number of stress friends influenced reading times and accuracy, outweighing any effect of stress dominance. In the presence of a majority of stress friends, the reading of low-frequency words was only affected by stress neighborhood. These effects were the same in fourth graders and adult readers. We argue that distributional information based on the number of stress friends-rather than stress dominance-is the most effective factor in assigning stress to words in reading.

  20. Overcoming the overlap problem in the assignment of 1H NMR spectra of larger proteins by use of three-dimensional heteronuclear 1H-15N Hartmann-Hahn-multiple quantum coherence and nuclear Overhauser-multiple quantum coherence spectroscopy: application to interleukin 1 beta.

    PubMed

    Marion, D; Driscoll, P C; Kay, L E; Wingfield, P T; Bax, A; Gronenborn, A M; Clore, G M

    1989-07-25

    The application of three-dimensional (3D) heteronuclear NMR spectroscopy to the sequential assignment of the 1H NMR spectra of larger proteins is presented, using uniformly labeled (approximately 95%) [15N]interleukin 1 beta, a protein of 153 residues and molecular mass of 17.4 kDa, as an example. The two-dimensional (2D) 600-MHz spectra of interleukin 1 beta are too complex for complete analysis, owing to extensive cross-peak overlap and chemical shift degeneracy. We show that the combined use of 3D 1H-15N Hartmann-Hahn-multiple quantum coherence (HOHAHA-HMQC) and nuclear Overhauser-multiple quantum coherence (NOESY-HMQC) spectroscopy, designed to provide the necessary through-bond and through-space correlations for sequential assignment, provides a practical general-purpose method for resolving ambiguities which severely limit the analysis of conventional 2D NMR spectra. The absence of overlapping cross-peaks in these 3D spectra allows the unambiguous identification of C alpha H(i)-NH(i+1) and NH(i)-NH(i+1) through-space nuclear Overhauser connectivities necessary for connecting a particular C alpha H(i)-NH(i) through-bond correlation with its associated through-space sequential cross-peak The problem of amide NH chemical shift degeneracy in the 1H NMR spectrum is therefore effectively removed, and the assignment procedure simply involves inspecting a series of 2D 1H-1H slices edited by the chemical shift of the directly bonded 15N atom. Connections between residues can be identified almost without any knowledge of the spin system types involved, though this type of information is clearly required for the eventual placement of the connected residues within the primary sequence.

  1. Efficient Credit Assignment through Evaluation Function Decomposition

    NASA Technical Reports Server (NTRS)

    Agogino, Adrian; Turner, Kagan; Mikkulainen, Risto

    2005-01-01

    Evolutionary methods are powerful tools in discovering solutions for difficult continuous tasks. When such a solution is encoded over multiple genes, a genetic algorithm faces the difficult credit assignment problem of evaluating how a single gene in a chromosome contributes to the full solution. Typically a single evaluation function is used for the entire chromosome, implicitly giving each gene in the chromosome the same evaluation. This method is inefficient because a gene will get credit for the contribution of all the other genes as well. Accurately measuring the fitness of individual genes in such a large search space requires many trials. This paper instead proposes turning this single complex search problem into a multi-agent search problem, where each agent has the simpler task of discovering a suitable gene. Gene-specific evaluation functions can then be created that have better theoretical properties than a single evaluation function over all genes. This method is tested in the difficult double-pole balancing problem, showing that agents using gene-specific evaluation functions can create a successful control policy in 20 percent fewer trials than the best existing genetic algorithms. The method is extended to more distributed problems, achieving 95 percent performance gains over tradition methods in the multi-rover domain.

  2. 47 CFR 80.389 - Frequencies for maritime support stations.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... associated public coast station. (b) Shore radar and radiolocation tests. The following frequency bands are available for assignment to demonstrate radar and radiolocation equipment. The use of frequencies...

  3. 47 CFR 80.389 - Frequencies for maritime support stations.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... associated public coast station. (b) Shore radar and radiolocation tests. The following frequency bands are available for assignment to demonstrate radar and radiolocation equipment. The use of frequencies...

  4. 47 CFR 80.389 - Frequencies for maritime support stations.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... associated public coast station. (b) Shore radar and radiolocation tests. The following frequency bands are available for assignment to demonstrate radar and radiolocation equipment. The use of frequencies...

  5. 47 CFR 80.389 - Frequencies for maritime support stations.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... associated public coast station. (b) Shore radar and radiolocation tests. The following frequency bands are available for assignment to demonstrate radar and radiolocation equipment. The use of frequencies...

  6. 47 CFR 80.389 - Frequencies for maritime support stations.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... associated public coast station. (b) Shore radar and radiolocation tests. The following frequency bands are available for assignment to demonstrate radar and radiolocation equipment. The use of frequencies...

  7. Integrated Project Scheduling and Staff Assignment with Controllable Processing Times

    PubMed Central

    Framinan, Jose M.

    2014-01-01

    This paper addresses a decision problem related to simultaneously scheduling the tasks in a project and assigning the staff to these tasks, taking into account that a task can be performed only by employees with certain skills, and that the length of each task depends on the number of employees assigned. This type of problems usually appears in service companies, where both tasks scheduling and staff assignment are closely related. An integer programming model for the problem is proposed, together with some extensions to cope with different situations. Additionally, the advantages of the controllable processing times approach are compared with the fixed processing times. Due to the complexity of the integrated model, a simple GRASP algorithm is implemented in order to obtain good, approximate solutions in short computation times. PMID:24895672

  8. Neural Mechanisms of Credit Assignment in a Multicue Environment

    PubMed Central

    Kolling, Nils; Brown, Joshua W.; Rushworth, Matthew

    2016-01-01

    In complex environments, many potential cues can guide a decision or be assigned responsibility for the outcome of the decision. We know little, however, about how humans and animals select relevant information sources that should guide behavior. We show that subjects solve this relevance selection and credit assignment problem by selecting one cue and its association with a particular outcome as the main focus of a hypothesis. To do this, we examined learning while using a task design that allowed us to estimate the focus of each subject's hypotheses on a trial-by-trial basis. When a prediction is confirmed by the outcome, then credit for the outcome is assigned to that cue rather than an alternative. Activity in medial frontal cortex is associated with the assignment of credit to the cue that is the main focus of the hypothesis. However, when the outcome disconfirms a prediction, the focus shifts between cues, and the credit for the outcome is assigned to an alternative cue. This process of reselection for credit assignment to an alternative cue is associated with lateral orbitofrontal cortex. SIGNIFICANCE STATEMENT Learners should infer which features of environments are predictive of significant events, such as rewards. This “credit assignment” problem is particularly challenging when any of several cues might be predictive. We show that human subjects solve the credit assignment problem by implicitly “hypothesizing” which cue is relevant for predicting subsequent outcomes, and then credit is assigned according to this hypothesis. This process is associated with a distinctive pattern of activity in a part of medial frontal cortex. By contrast, when unexpected outcomes occur, hypotheses are redirected toward alternative cues, and this process is associated with activity in lateral orbitofrontal cortex. PMID:26818500

  9. Assignment of laser lines in optically pumped submillimeter lasers - HDCO, D2CO

    NASA Astrophysics Data System (ADS)

    Dangoisse, D.; Duterage, B.; Glorieux, P.

    1980-03-01

    Respectively, three and eight laser lines have been precisely measured and assigned in asymmetric-top molecules HDCO and D2CO. Frequency calculations of rotational transitions use parameters obtained from microwave studies. For frequency calculations of rovibrational transitions, vibrational energies derived from infrared band analysis have been also taken into account. The assignment is confirmed by infrared radio frequency double resonance experiments inside the submillimeter laser cavity.

  10. 5 CFR 870.901 - Assignments permitted.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... (CONTINUED) FEDERAL EMPLOYEES' GROUP LIFE INSURANCE PROGRAM Assignments of Life Insurance § 870.901..., and compensationers. (2) An individual may assign ownership of all life insurance under this part.../she must assign all the insurance; an individual cannot assign only a portion of the coverage....

  11. Automated analysis of protein NMR assignments using methods from artificial intelligence.

    PubMed

    Zimmerman, D E; Kulikowski, C A; Huang, Y; Feng, W; Tashiro, M; Shimotakahara, S; Chien, C; Powers, R; Montelione, G T

    1997-06-20

    An expert system for determining resonance assignments from NMR spectra of proteins is described. Given the amino acid sequence, a two-dimensional 15N-1H heteronuclear correlation spectrum and seven to eight three-dimensional triple-resonance NMR spectra for seven proteins, AUTOASSIGN obtained an average of 98% of sequence-specific spin-system assignments with an error rate of less than 0.5%. Execution times on a Sparc 10 workstation varied from 16 seconds for smaller proteins with simple spectra to one to nine minutes for medium size proteins exhibiting numerous extra spin systems attributed to conformational isomerization. AUTOASSIGN combines symbolic constraint satisfaction methods with a domain-specific knowledge base to exploit the logical structure of the sequential assignment problem, the specific features of the various NMR experiments, and the expected chemical shift frequencies of different amino acids. The current implementation specializes in the analysis of data derived from the most sensitive of the currently available triple-resonance experiments. Potential extensions of the system for analysis of additional types of protein NMR data are also discussed.

  12. Using deflation in the pole assignment problem with output feedback

    NASA Technical Reports Server (NTRS)

    Miminis, George

    1989-01-01

    A direct algorithm is suggested for the computation of a linear output feedback for a multi input, multi output system such that the resultant closed-loop matrix has eigenvalues that include a specified set of eigenvalues. The algorithm uses deflation based on unitary similarity transformations. Thus researchers hope the algorithm is numerically stable; however, this has not been proven as yet.

  13. Task Assignment Heuristics for Parallel and Distributed CFD Applications

    NASA Technical Reports Server (NTRS)

    Lopez-Benitez, Noe; Djomehri, M. Jahed; Biswas, Rupak

    2003-01-01

    This paper proposes a task graph (TG) model to represent a single discrete step of multi-block overset grid computational fluid dynamics (CFD) applications. The TG model is then used to not only balance the computational workload across the overset grids but also to reduce inter-grid communication costs. We have developed a set of task assignment heuristics based on the constraints inherent in this class of CFD problems. Two basic assignments, the smallest task first (STF) and the largest task first (LTF), are first presented. They are then systematically costs. To predict the performance of the proposed task assignment heuristics, extensive performance evaluations are conducted on a synthetic TG with tasks defined in terms of the number of grid points in predetermined overlapping grids. A TG derived from a realistic problem with eight million grid points is also used as a test case.

  14. Static assignment of complex stochastic tasks using stochastic majorization

    NASA Technical Reports Server (NTRS)

    Nicol, David; Simha, Rahul; Towsley, Don

    1992-01-01

    We consider the problem of statically assigning many tasks to a (smaller) system of homogeneous processors, where a task's structure is modeled as a branching process, and all tasks are assumed to have identical behavior. We show how the theory of majorization can be used to obtain a partial order among possible task assignments. Our results show that if the vector of numbers of tasks assigned to each processor under one mapping is majorized by that of another mapping, then the former mapping is better than the latter with respect to a large number of objective functions. In particular, we show how measurements of finishing time, resource utilization, and reliability are all captured by the theory. We also show how the theory may be applied to the problem of partitioning a pool of processors for distribution among parallelizable tasks.

  15. Student's Lab Assignments in PDE Course with MAPLE.

    ERIC Educational Resources Information Center

    Ponidi, B. Alhadi

    Computer-aided software has been used intensively in many mathematics courses, especially in computational subjects, to solve initial value and boundary value problems in Partial Differential Equations (PDE). Many software packages were used in student lab assignments such as FORTRAN, PASCAL, MATLAB, MATHEMATICA, and MAPLE in order to accelerate…

  16. Using Staged Assignments as Student Spotters: Learning Research Methods.

    ERIC Educational Resources Information Center

    Keating, Barbara

    1991-01-01

    Compares providing staged assignments for teaching research methods to providing a spotter for safety in gymnastics. Describes guidelines for a research proposal. Discusses problem definition, literature review, hypothesis development, data collection, and analysis. Argues that students must know the rules and reasons for the ideal model of…

  17. Listener Reliability in Assigning Utterance Boundaries in Children's Spontaneous Speech

    ERIC Educational Resources Information Center

    Stockman, Ida J.

    2010-01-01

    Research and clinical practices often rely on an utterance unit for spoken language analysis. This paper calls attention to the problems encountered when identifying utterance boundaries in young children's spontaneous conversational speech. The results of a reliability study of utterance boundary assignment are described for 20 females with…

  18. TEACHING PHYSICS: Individual work assignments

    NASA Astrophysics Data System (ADS)

    Evans, J. G.

    2000-09-01

    Here are two examples of techniques for individual problem-setting, one a worksheet on electricity produced using Excel, the other a computer simulation on radioactive decay. Both have been found to work well.

  19. Context-Aware Reviewer Assignment for Trust Enhanced Peer Review.

    PubMed

    Li, Lei; Wang, Yan; Liu, Guanfeng; Wang, Meng; Wu, Xindong

    2015-01-01

    Reviewer assignment is critical to peer review systems, such as peer-reviewed research conferences or peer-reviewed funding applications, and its effectiveness is a deep concern of all academics. However, there are some problems in existing peer review systems during reviewer assignment. For example, some of the reviewers are much more stringent than others, leading to an unfair final decision, i.e., some submissions (i.e., papers or applications) with better quality are rejected. In this paper, we propose a context-aware reviewer assignment for trust enhanced peer review. More specifically, in our approach, we first consider the research area specific expertise of reviewers, and the institution relevance and co-authorship between reviewers and authors, so that reviewers with the right expertise are assigned to the corresponding submissions without potential conflict of interest. In addition, we propose a novel cross-assignment paradigm, and reviewers are cross-assigned in order to avoid assigning a group of stringent reviewers or a group of lenient reviewers to the same submission. More importantly, on top of them, we propose an academic CONtext-aware expertise relevanCe oriEnted Reviewer cross-assignmenT approach (CONCERT), which aims to effectively estimate the "true" ratings of submissions based on the ratings from all reviewers, even though no prior knowledge exists about the distribution of stringent reviewers and lenient reviewers. The experiments illustrate that compared with existing approaches, our proposed CONCERT approach can less likely assign more than one stringent reviewers or lenient reviewers to a submission simultaneously and significantly reduce the influence of ratings from stringent reviewers and lenient reviewers, leading to trust enhanced peer review and selection, no matter what kind of distributions of stringent reviewers and lenient reviewers are.

  20. The Mechanism Design Approach to Student Assignment

    ERIC Educational Resources Information Center

    Pathak, Parag A.

    2011-01-01

    The mechanism design approach to student assignment involves the theoretical, empirical, and experimental study of systems used to allocate students into schools around the world. Recent practical experience designing systems for student assignment has raised new theoretical questions for the theory of matching and assignment. This article reviews…

  1. 43 CFR 2521.3 - Assignment.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... OF THE INTERIOR LAND RESOURCE MANAGEMENT (2000) DESERT-LAND ENTRIES Procedures § 2521.3 Assignment...), assignments of desert-land entries were recognized, the Department of the Interior, largely for administrative reasons, held that a desert-land entry might be assigned as a whole or in its entirety, but refused...

  2. 43 CFR 2521.3 - Assignment.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... OF THE INTERIOR LAND RESOURCE MANAGEMENT (2000) DESERT-LAND ENTRIES Procedures § 2521.3 Assignment...), assignments of desert-land entries were recognized, the Department of the Interior, largely for administrative reasons, held that a desert-land entry might be assigned as a whole or in its entirety, but refused...

  3. 43 CFR 2521.3 - Assignment.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... OF THE INTERIOR LAND RESOURCE MANAGEMENT (2000) DESERT-LAND ENTRIES Procedures § 2521.3 Assignment...), assignments of desert-land entries were recognized, the Department of the Interior, largely for administrative reasons, held that a desert-land entry might be assigned as a whole or in its entirety, but refused...

  4. 43 CFR 2521.3 - Assignment.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... OF THE INTERIOR LAND RESOURCE MANAGEMENT (2000) DESERT-LAND ENTRIES Procedures § 2521.3 Assignment...), assignments of desert-land entries were recognized, the Department of the Interior, largely for administrative reasons, held that a desert-land entry might be assigned as a whole or in its entirety, but refused...

  5. Assigning Homework to Couples and Families

    ERIC Educational Resources Information Center

    Dattilio, Frank M.; Dickson, Jan

    2007-01-01

    Homework assignments, or "out-of-session assignments," have gained popularity among couple and family therapists due to their potential to solidify the work achieved during the course of therapy and to help clients take responsibility for their own change. Homework assignments also serve as a testing ground in therapy to determine what works and…

  6. 7 CFR 1437.104 - Assigned production.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false Assigned production. 1437.104 Section 1437.104... Determining Yield Coverage Using Actual Production History § 1437.104 Assigned production. (a) When determining losses under this section, assigned production will be used to offset the loss of production...

  7. 31 CFR 337.5 - Assignments.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Assignments. 337.5 Section 337.5... ADMINISTRATION DEBENTURES Certificated Debentures § 337.5 Assignments. (a) If the registered payee, or an assignee holding a certificated debenture under proper assignment from the registered payee, desires...

  8. 28 CFR 548.17 - Work assignments.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 28 Judicial Administration 2 2010-07-01 2010-07-01 false Work assignments. 548.17 Section 548.17... PROGRAMS Religious Beliefs and Practices of Committed Offenders § 548.17 Work assignments. When the religious tenets of an inmate's faith are violated or jeopardized by a particular work assignment,...

  9. 28 CFR 548.17 - Work assignments.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 28 Judicial Administration 2 2014-07-01 2014-07-01 false Work assignments. 548.17 Section 548.17... PROGRAMS Religious Beliefs and Practices of Committed Offenders § 548.17 Work assignments. When the religious tenets of an inmate's faith are violated or jeopardized by a particular work assignment,...

  10. 28 CFR 548.17 - Work assignments.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 28 Judicial Administration 2 2013-07-01 2013-07-01 false Work assignments. 548.17 Section 548.17... PROGRAMS Religious Beliefs and Practices of Committed Offenders § 548.17 Work assignments. When the religious tenets of an inmate's faith are violated or jeopardized by a particular work assignment,...

  11. 28 CFR 548.17 - Work assignments.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 28 Judicial Administration 2 2012-07-01 2012-07-01 false Work assignments. 548.17 Section 548.17... PROGRAMS Religious Beliefs and Practices of Committed Offenders § 548.17 Work assignments. When the religious tenets of an inmate's faith are violated or jeopardized by a particular work assignment,...

  12. 28 CFR 548.17 - Work assignments.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 28 Judicial Administration 2 2011-07-01 2011-07-01 false Work assignments. 548.17 Section 548.17... PROGRAMS Religious Beliefs and Practices of Committed Offenders § 548.17 Work assignments. When the religious tenets of an inmate's faith are violated or jeopardized by a particular work assignment,...

  13. 47 CFR 87.375 - Frequencies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Aeronautical Search and Rescue Stations § 87.375 Frequencies. (a) The frequency 123.100 MHz is available for assignment to aeronautical search and rescue stations for actual search and rescue missions. Each search and... for assignment to aeronautical search and rescue stations for organized search and rescue training...

  14. 47 CFR 87.375 - Frequencies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Aeronautical Search and Rescue Stations § 87.375 Frequencies. (a) The frequency 123.100 MHz is available for assignment to aeronautical search and rescue stations for actual search and rescue missions. Each search and... for assignment to aeronautical search and rescue stations for organized search and rescue training...

  15. 47 CFR 87.375 - Frequencies.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Aeronautical Search and Rescue Stations § 87.375 Frequencies. (a) The frequency 123.100 MHz is available for assignment to aeronautical search and rescue stations for actual search and rescue missions. Each search and... for assignment to aeronautical search and rescue stations for organized search and rescue training...

  16. 47 CFR 87.375 - Frequencies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Aeronautical Search and Rescue Stations § 87.375 Frequencies. (a) The frequency 123.100 MHz is available for assignment to aeronautical search and rescue stations for actual search and rescue missions. Each search and... for assignment to aeronautical search and rescue stations for organized search and rescue training...

  17. 47 CFR 87.375 - Frequencies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Aeronautical Search and Rescue Stations § 87.375 Frequencies. (a) The frequency 123.100 MHz is available for assignment to aeronautical search and rescue stations for actual search and rescue missions. Each search and... for assignment to aeronautical search and rescue stations for organized search and rescue training...

  18. Raman vapor spectrum and vibrational assignment for pyridine

    NASA Astrophysics Data System (ADS)

    Klots, T. D.

    1998-09-01

    Assignment modifications for the pyridine fundamentals are proposed, based on first time Raman vapor measurements, and a more complete set of infrared and Raman spectra for the gas and liquid. Raman polarization measurements are newly given for some 70 lines between 1600 and 3000 cm -1. The Kakiuti et al. (Kakiuti et al., J. Mol. Spectrosc. 61 (1976) 164) assignment for the nonplanar modes in CS 2 solution is shown to be the only previous correct assignment. Planar assignment modifications, though generally small, are warranted because of the benchmark nature of pyridine. A previous set of vibrational frequencies, derived from a scaled 4-21G force field calculation (Pongor et al., J. Am. Chem. Soc. 106 (1984) 2765; Pongor et al., J. Mol. Spectrosc. 114 (1985) 445), is in excellent agreement with the observed fundamentals, and in fact, tips the balance in favor of assigning ν22 to 1053 cm -1. Ideal-gas entropies derived from spectroscopic constants are also seen to be in excellent agreement with those from calorimetry (Chirico et al., J. Chem. Thermodyn. 28 (1996) 797; Chirico and Steele, J. Chem. Thermodyn. 28 (1996) 819).

  19. Dominant pole and eigenstructure assignment for positive systems with state feedback

    NASA Astrophysics Data System (ADS)

    Li, Zhao; Lam, James

    2016-09-01

    In this paper, the dominant pole assignment problem, the dominant eigenstructure assignment problem and the robust dominant pole assignment problem for linear time-invariant positive systems with state feedback are considered. The dominant pole assignment problem is formulated as a linear programming problem, and the dominant eigenstructure problem is formulated as a quasiconvex optimisation problem with linear constraints. The robust dominant pole assignment problem is formulated as a non-convex optimisation problem with non-linear constraints which is solved using particle swarm optimisation (PSO) with an efficient scheme which employs the dominant eigenstructure assignment technique to accelerate the convergence of the PSO procedure. Each of the three problems can be further constrained by requiring that the controller has a pre-specified structure, or the gain matrix have both elementwise upper and lower bounds. These constraints can be incorporated into the proposed scheme without increasing the complexity of the algorithms. Both the continuous-time case and the discrete-time case are treated in the paper.

  20. Is Poor Frequency Modulation Detection Linked to Literacy Problems? A Comparison of Specific Reading Disability and Mild to Moderate Sensorineural Hearing Loss

    ERIC Educational Resources Information Center

    Halliday, L. F.; Bishop, D. V. M.

    2006-01-01

    Specific reading disability (SRD) is now widely recognised as often being caused by phonological processing problems, affecting analysis of spoken as well as written language. According to one theoretical account, these phonological problems are due to low-level problems in auditory perception of dynamic acoustic cues. Evidence for this has come…

  1. Library-Based Assignments That Enrich the Business Communication Course.

    ERIC Educational Resources Information Center

    Hiemstra, Kathleen M.

    2002-01-01

    Reviews the benefits of library work (and some cautions) before describing four assignments that exploit library resources: a business report assignment; a professional journal assignment; a style manual format assignment; and an international business communication assignment. (SG)

  2. Caseload Assignments. Position Statement. Revised

    ERIC Educational Resources Information Center

    DuRant, Bonnie V.; Gibbons, Linda J.; Poole, Cynthia; Suessmann, Mary; Wyckoff, Leah

    2010-01-01

    It is the position of the National Association of School Nurses (NASN) that schools should employ professionally prepared Registered Nurses, to conduct and supervise school health programs which address the variety of health problems experienced by school children. NASN recommends a formula-based approach with minimum ratios of nurses-to-students…

  3. Voltage and Level-Shifter Assignment Driven Floorplanning

    NASA Astrophysics Data System (ADS)

    Yu, Bei; Dong, Sheqin; Chen, Song; Goto, Satoshi

    Low Power Design has become a significant requirement when the CMOS technology entered the nanometer era. Multiple-Supply Voltage (MSV) is a popular and effective method for both dynamic and static power reduction while maintaining performance. Level shifters may cause area and Interconnect Length Overhead (ILO), and should be considered at both floorplanning and post-floorplanning stages. In this paper, we propose a two phases algorithm framework, called VLSAF, to solve voltage and level shifter assignment problem. At floorplanning phase, we use a convex cost network flow algorithm to assign voltage and a minimum cost flow algorithm to handle level-shifter assignment. At post-floorplanning phase, a heuristic method is adopted to redistribute white spaces and calculate the positions and shapes of level shifters. The experimental results show VLSAF is effective.

  4. Robust eigensystem assignment for second-order estimators

    NASA Technical Reports Server (NTRS)

    Juang, Jer-Nan; Maghami, Peiman G.

    1990-01-01

    An approach for the robust eigensystem assignment of flexible structures using full state or output feedback is developed. Using the second-order dynamic equations, the approach can assign the eigenvalues of the system via velocity and displacement feedbacks, or acceleration and velocity feedbacks. The eigenvalues and eigenvectors of the system are assigned, via the second-order eigenvalue problem for the structural system, in two steps. First, an orthonormal basis spanning the attainable closed-loop eigenvector space corresponding to each desired closed-loop eigenvalue is generated using the Singular Value or QR decompositions. Second, a sequential procedure is used to choose a set of closed-loop eigenvectors that are as close as possible to the column space of a well-conditioned target matrix. Among the possible choices of the target matrix, the closest unitary matrix to the open-loop eigenvector matrix appears to be a suitable choice. A numerical example is given to illustrate the proposed algorithm.

  5. 48 CFR 211.274-5 - Policy for assignment of Government-assigned serial numbers.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Using and Maintaining Requirements Documents 211.274-5 Policy for assignment of Government-assigned serial numbers. It is DoD policy that contractors apply Government-assigned serial numbers, such as tail... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Policy for assignment...

  6. 48 CFR 211.274-5 - Policy for assignment of Government-assigned serial numbers.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Using and Maintaining Requirements Documents 211.274-5 Policy for assignment of Government-assigned serial numbers. It is DoD policy that contractors apply Government-assigned serial numbers, such as tail... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false Policy for assignment...

  7. 48 CFR 211.274-5 - Policy for assignment of Government-assigned serial numbers.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Using and Maintaining Requirements Documents 211.274-5 Policy for assignment of Government-assigned serial numbers. It is DoD policy that contractors apply Government-assigned serial numbers, such as tail... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Policy for assignment...

  8. 48 CFR 211.274-5 - Policy for assignment of Government-assigned serial numbers.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Using and Maintaining Requirements Documents 211.274-5 Policy for assignment of Government-assigned serial numbers. It is DoD policy that contractors apply Government-assigned serial numbers, such as tail... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Policy for assignment...

  9. 48 CFR 211.274-5 - Policy for assignment of Government-assigned serial numbers.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Using and Maintaining Requirements Documents 211.274-5 Policy for assignment of Government-assigned serial numbers. It is DoD policy that contractors apply Government-assigned serial numbers, such as tail... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Policy for assignment...

  10. An Investigation of the Partial-Assignment Completion Effect on Students' Assignment Choice Behavior

    ERIC Educational Resources Information Center

    Hawthorn-Embree, Meredith L.; Skinner, Christopher H.; Parkhurst, John; Conley, Elisha

    2011-01-01

    This study was designed to investigate the partial assignment completion effect. Seventh-grade students were given a math assignment. After working for 5 min, they were interrupted and their partially completed assignments were collected. About 20 min later, students were given their partially completed assignment and a new, control assignment…

  11. Due-Window Assignment Scheduling with Variable Job Processing Times

    PubMed Central

    Wu, Yu-Bin

    2015-01-01

    We consider a common due-window assignment scheduling problem jobs with variable job processing times on a single machine, where the processing time of a job is a function of its position in a sequence (i.e., learning effect) or its starting time (i.e., deteriorating effect). The problem is to determine the optimal due-windows, and the processing sequence simultaneously to minimize a cost function includes earliness, tardiness, the window location, window size, and weighted number of tardy jobs. We prove that the problem can be solved in polynomial time. PMID:25918745

  12. 47 CFR 87.421 - Frequencies.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 5 2013-10-01 2013-10-01 false Frequencies. 87.421 Section 87.421... Airport Control Tower Stations § 87.421 Frequencies. The Commission will assign VHF frequencies after coordination with the FAA. Frequencies in the following bands are available to control towers and RCOs....

  13. 47 CFR 87.349 - Frequencies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Frequencies. 87.349 Section 87.349... Aeronautical Utility Mobile Stations § 87.349 Frequencies. (a) The frequency assigned to an aeronautical... frequency used by the control tower for ground traffic control or by the flight service station...

  14. 47 CFR 74.661 - Frequency tolerance.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 4 2013-10-01 2013-10-01 false Frequency tolerance. 74.661 Section 74.661... Stations § 74.661 Frequency tolerance. Stations in this service shall maintain the carrier frequency of each authorized transmitter to within the following percentage of the assigned frequency....

  15. 47 CFR 24.129 - Frequencies.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 2 2013-10-01 2013-10-01 false Frequencies. 24.129 Section 24.129... SERVICES Narrowband PCS § 24.129 Frequencies. The following frequencies are available for narrowband PCS: (a) Eighteen frequencies are available for assignment on a nationwide basis as follows: (1) Seven...

  16. 47 CFR 95.853 - Frequency segments.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Frequency segments. 95.853 Section 95.853... SERVICES 218-219 MHz Service Technical Standards § 95.853 Frequency segments. There are two frequency segments available for assignment to the 218-219 MHz Service in each service area. Frequency segment A...

  17. 47 CFR 74.661 - Frequency tolerance.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 4 2012-10-01 2012-10-01 false Frequency tolerance. 74.661 Section 74.661... Stations § 74.661 Frequency tolerance. Stations in this service shall maintain the carrier frequency of each authorized transmitter to within the following percentage of the assigned frequency....

  18. 47 CFR 74.661 - Frequency tolerance.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 4 2014-10-01 2014-10-01 false Frequency tolerance. 74.661 Section 74.661... Stations § 74.661 Frequency tolerance. Stations in this service shall maintain the carrier frequency of each authorized transmitter to within the following percentage of the assigned frequency....

  19. 47 CFR 95.853 - Frequency segments.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 5 2013-10-01 2013-10-01 false Frequency segments. 95.853 Section 95.853... SERVICES 218-219 MHz Service Technical Standards § 95.853 Frequency segments. There are two frequency segments available for assignment to the 218-219 MHz Service in each service area. Frequency segment A...

  20. 47 CFR 24.129 - Frequencies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 2 2011-10-01 2011-10-01 false Frequencies. 24.129 Section 24.129... SERVICES Narrowband PCS § 24.129 Frequencies. The following frequencies are available for narrowband PCS: (a) Eighteen frequencies are available for assignment on a nationwide basis as follows: (1) Seven...

  1. 47 CFR 95.853 - Frequency segments.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Frequency segments. 95.853 Section 95.853... SERVICES 218-219 MHz Service Technical Standards § 95.853 Frequency segments. There are two frequency segments available for assignment to the 218-219 MHz Service in each service area. Frequency segment A...

  2. 47 CFR 87.217 - Frequencies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Frequencies. 87.217 Section 87.217... Aeronautical Advisory Stations (Unicoms) § 87.217 Frequencies. (a) Only one unicom frequency will be assigned at any one airport. Applicants must request a particular frequency, which will be taken...

  3. 47 CFR 87.349 - Frequencies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Frequencies. 87.349 Section 87.349... Aeronautical Utility Mobile Stations § 87.349 Frequencies. (a) The frequency assigned to an aeronautical... frequency used by the control tower for ground traffic control or by the flight service station...

  4. 47 CFR 74.1261 - Frequency tolerance.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 4 2014-10-01 2014-10-01 false Frequency tolerance. 74.1261 Section 74.1261... FM Broadcast Booster Stations § 74.1261 Frequency tolerance. (a) The licensee of an FM translator or... frequency at the output of the translator within 0.01 percent of its assigned frequency. (b) The licensee...

  5. 47 CFR 87.349 - Frequencies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Frequencies. 87.349 Section 87.349... Aeronautical Utility Mobile Stations § 87.349 Frequencies. (a) The frequency assigned to an aeronautical... frequency used by the control tower for ground traffic control or by the flight service station...

  6. 47 CFR 87.217 - Frequencies.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 5 2013-10-01 2013-10-01 false Frequencies. 87.217 Section 87.217... Aeronautical Advisory Stations (Unicoms) § 87.217 Frequencies. (a) Only one unicom frequency will be assigned at any one airport. Applicants must request a particular frequency, which will be taken...

  7. 47 CFR 74.1261 - Frequency tolerance.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 4 2013-10-01 2013-10-01 false Frequency tolerance. 74.1261 Section 74.1261... FM Broadcast Booster Stations § 74.1261 Frequency tolerance. (a) The licensee of an FM translator or... frequency at the output of the translator within 0.01 percent of its assigned frequency. (b) The licensee...

  8. 47 CFR 87.421 - Frequencies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Frequencies. 87.421 Section 87.421... Airport Control Tower Stations § 87.421 Frequencies. The Commission will assign VHF frequencies after coordination with the FAA. Frequencies in the following bands are available to control towers and RCOs....

  9. 47 CFR 80.375 - Radiodetermination frequencies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Radiodetermination frequencies. 80.375 Section... SERVICES STATIONS IN THE MARITIME SERVICES Frequencies Radiodetermination § 80.375 Radiodetermination frequencies. This section describes the carrier frequencies assignable to radiodetermination stations....

  10. 47 CFR 87.217 - Frequencies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Frequencies. 87.217 Section 87.217... Aeronautical Advisory Stations (Unicoms) § 87.217 Frequencies. (a) Only one unicom frequency will be assigned at any one airport. Applicants must request a particular frequency, which will be taken...

  11. 47 CFR 87.287 - Frequencies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Frequencies. 87.287 Section 87.287... Data Link Land Test Stations § 87.287 Frequencies. (a) The frequencies assignable to aircraft data link..., 136.925 MHz, 136.950 MHz, and 136.975 MHz. Interstitial frequencies separated by 8.33 kilohertz...

  12. 47 CFR 95.853 - Frequency segments.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Frequency segments. 95.853 Section 95.853... SERVICES 218-219 MHz Service Technical Standards § 95.853 Frequency segments. There are two frequency segments available for assignment to the 218-219 MHz Service in each service area. Frequency segment A...

  13. 47 CFR 24.129 - Frequencies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 2 2010-10-01 2010-10-01 false Frequencies. 24.129 Section 24.129... SERVICES Narrowband PCS § 24.129 Frequencies. The following frequencies are available for narrowband PCS: (a) Eighteen frequencies are available for assignment on a nationwide basis as follows: (1) Seven...

  14. 47 CFR 87.421 - Frequencies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Frequencies. 87.421 Section 87.421... Airport Control Tower Stations § 87.421 Frequencies. The Commission will assign VHF frequencies after coordination with the FAA. Frequencies in the following bands are available to control towers and RCOs....

  15. 47 CFR 74.661 - Frequency tolerance.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Frequency tolerance. 74.661 Section 74.661... Stations § 74.661 Frequency tolerance. Stations in this service shall maintain the carrier frequency of each authorized transmitter to within the following percentage of the assigned frequency....

  16. 47 CFR 74.1261 - Frequency tolerance.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 4 2012-10-01 2012-10-01 false Frequency tolerance. 74.1261 Section 74.1261... FM Broadcast Booster Stations § 74.1261 Frequency tolerance. (a) The licensee of an FM translator or... frequency at the output of the translator within 0.01 percent of its assigned frequency. (b) The licensee...

  17. 47 CFR 87.349 - Frequencies.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 5 2013-10-01 2013-10-01 false Frequencies. 87.349 Section 87.349... Aeronautical Utility Mobile Stations § 87.349 Frequencies. (a) The frequency assigned to an aeronautical... frequency used by the control tower for ground traffic control or by the flight service station...

  18. 47 CFR 87.349 - Frequencies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Frequencies. 87.349 Section 87.349... Aeronautical Utility Mobile Stations § 87.349 Frequencies. (a) The frequency assigned to an aeronautical... frequency used by the control tower for ground traffic control or by the flight service station...

  19. 47 CFR 74.1261 - Frequency tolerance.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Frequency tolerance. 74.1261 Section 74.1261... FM Broadcast Booster Stations § 74.1261 Frequency tolerance. (a) The licensee of an FM translator or... frequency at the output of the translator within 0.01 percent of its assigned frequency. (b) The licensee...

  20. 47 CFR 74.661 - Frequency tolerance.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 4 2011-10-01 2011-10-01 false Frequency tolerance. 74.661 Section 74.661... Stations § 74.661 Frequency tolerance. Stations in this service shall maintain the carrier frequency of each authorized transmitter to within the following percentage of the assigned frequency....

  1. 47 CFR 87.421 - Frequencies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Frequencies. 87.421 Section 87.421... Airport Control Tower Stations § 87.421 Frequencies. The Commission will assign VHF frequencies after coordination with the FAA. Frequencies in the following bands are available to control towers and RCOs....

  2. 47 CFR 80.375 - Radiodetermination frequencies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Radiodetermination frequencies. 80.375 Section... SERVICES STATIONS IN THE MARITIME SERVICES Frequencies Radiodetermination § 80.375 Radiodetermination frequencies. This section describes the carrier frequencies assignable to radiodetermination stations....

  3. 47 CFR 74.1261 - Frequency tolerance.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 4 2011-10-01 2011-10-01 false Frequency tolerance. 74.1261 Section 74.1261... FM Broadcast Booster Stations § 74.1261 Frequency tolerance. (a) The licensee of an FM translator or... frequency at the output of the translator within 0.01 percent of its assigned frequency. (b) The licensee...

  4. 47 CFR 95.853 - Frequency segments.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Frequency segments. 95.853 Section 95.853... SERVICES 218-219 MHz Service Technical Standards § 95.853 Frequency segments. There are two frequency segments available for assignment to the 218-219 MHz Service in each service area. Frequency segment A...

  5. 47 CFR 87.217 - Frequencies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Frequencies. 87.217 Section 87.217... Aeronautical Advisory Stations (Unicoms) § 87.217 Frequencies. (a) Only one unicom frequency will be assigned at any one airport. Applicants must request a particular frequency, which will be taken...

  6. 47 CFR 24.129 - Frequencies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 2 2012-10-01 2012-10-01 false Frequencies. 24.129 Section 24.129... SERVICES Narrowband PCS § 24.129 Frequencies. The following frequencies are available for narrowband PCS: (a) Eighteen frequencies are available for assignment on a nationwide basis as follows: (1) Seven...

  7. 47 CFR 24.129 - Frequencies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 2 2014-10-01 2014-10-01 false Frequencies. 24.129 Section 24.129... SERVICES Narrowband PCS § 24.129 Frequencies. The following frequencies are available for narrowband PCS: (a) Eighteen frequencies are available for assignment on a nationwide basis as follows: (1) Seven...

  8. 47 CFR 87.217 - Frequencies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Frequencies. 87.217 Section 87.217... Aeronautical Advisory Stations (Unicoms) § 87.217 Frequencies. (a) Only one unicom frequency will be assigned at any one airport. Applicants must request a particular frequency, which will be taken...

  9. 47 CFR 87.421 - Frequencies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Frequencies. 87.421 Section 87.421... Airport Control Tower Stations § 87.421 Frequencies. The Commission will assign VHF frequencies after coordination with the FAA. Frequencies in the following bands are available to control towers and RCOs....

  10. Integer Linear Programming for Constrained Multi-Aspect Committee Review Assignment.

    PubMed

    Karimzadehgan, Maryam; Zhai, Chengxiang

    2012-07-01

    Automatic review assignment can significantly improve the productivity of many people such as conference organizers, journal editors and grant administrators. A general setup of the review assignment problem involves assigning a set of reviewers on a committee to a set of documents to be reviewed under the constraint of review quota so that the reviewers assigned to a document can collectively cover multiple topic aspects of the document. No previous work has addressed such a setup of committee review assignments while also considering matching multiple aspects of topics and expertise. In this paper, we tackle the problem of committee review assignment with multi-aspect expertise matching by casting it as an integer linear programming problem. The proposed algorithm can naturally accommodate any probabilistic or deterministic method for modeling multiple aspects to automate committee review assignments. Evaluation using a multi-aspect review assignment test set constructed using ACM SIGIR publications shows that the proposed algorithm is effective and efficient for committee review assignments based on multi-aspect expertise matching.

  11. 47 CFR 5.85 - Frequencies and policy governing frequency assignment.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... this chapter. (2) In the event that calculated value of expected field strength exceeds a direct wave... kW or more average ERP in the primary plane of polarization in the azimuthal direction of the Monitoring Station; (iv) Stations within 80 kilometers (50 statute miles) with 25 kW or more average ERP...

  12. 47 CFR 5.85 - Frequencies and policy governing frequency assignment.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... this chapter. (2) In the event that calculated value of expected field strength exceeds a direct wave... kW or more average ERP in the primary plane of polarization in the azimuthal direction of the Monitoring Station; (iv) Stations within 80 kilometers (50 statute miles) with 25 kW or more average ERP...

  13. Spatio-Temporal Credit Assignment in Neuronal Population Learning

    PubMed Central

    Friedrich, Johannes; Urbanczik, Robert; Senn, Walter

    2011-01-01

    In learning from trial and error, animals need to relate behavioral decisions to environmental reinforcement even though it may be difficult to assign credit to a particular decision when outcomes are uncertain or subject to delays. When considering the biophysical basis of learning, the credit-assignment problem is compounded because the behavioral decisions themselves result from the spatio-temporal aggregation of many synaptic releases. We present a model of plasticity induction for reinforcement learning in a population of leaky integrate and fire neurons which is based on a cascade of synaptic memory traces. Each synaptic cascade correlates presynaptic input first with postsynaptic events, next with the behavioral decisions and finally with external reinforcement. For operant conditioning, learning succeeds even when reinforcement is delivered with a delay so large that temporal contiguity between decision and pertinent reward is lost due to intervening decisions which are themselves subject to delayed reinforcement. This shows that the model provides a viable mechanism for temporal credit assignment. Further, learning speeds up with increasing population size, so the plasticity cascade simultaneously addresses the spatial problem of assigning credit to synapses in different population neurons. Simulations on other tasks, such as sequential decision making, serve to contrast the performance of the proposed scheme to that of temporal difference-based learning. We argue that, due to their comparative robustness, synaptic plasticity cascades are attractive basic models of reinforcement learning in the brain. PMID:21738460

  14. Assigning African elephant DNA to geographic region of origin: Applications to the ivory trade

    PubMed Central

    Wasser, Samuel K.; Shedlock, Andrew M.; Comstock, Kenine; Ostrander, Elaine A.; Mutayoba, Benezeth; Stephens, Matthew

    2004-01-01

    Resurgence of illicit trade in African elephant ivory is placing the elephant at renewed risk. Regulation of this trade could be vastly improved by the ability to verify the geographic origin of tusks. We address this need by developing a combined genetic and statistical method to determine the origin of poached ivory. Our statistical approach exploits a smoothing method to estimate geographic-specific allele frequencies over the entire African elephants' range for 16 microsatellite loci, using 315 tissue and 84 scat samples from forest (Loxodonta africana cyclotis) and savannah (Loxodonta africana africana) elephants at 28 locations. These geographic-specific allele frequency estimates are used to infer the geographic origin of DNA samples, such as could be obtained from tusks of unknown origin. We demonstrate that our method alleviates several problems associated with standard assignment methods in this context, and the absolute accuracy of our method is high. Continent-wide, 50% of samples were located within 500 km, and 80% within 932 km of their actual place of origin. Accuracy varied by region (median accuracies: West Africa, 135 km; Central Savannah, 286 km; Central Forest, 411 km; South, 535 km; and East, 697 km). In some cases, allele frequencies vary considerably over small geographic regions, making much finer discriminations possible and suggesting that resolution could be further improved by collection of samples from locations not represented in our study. PMID:15459317

  15. Lotteries in Student Assignment: An Equivalence Result. NBER Working Paper No. 16140

    ERIC Educational Resources Information Center

    Pathak, Parag A.; Sethuraman, Jay

    2010-01-01

    This paper formally examines two competing methods of conducting a lottery in assigning students to schools, motivated by the design of the centralized high school student assignment system in New York City. The main result of the paper is that a single and multiple lottery mechanism are equivalent for the problem of allocating students to schools…

  16. Reduced dimensionality (4,3)D-hnCOCANH experiment: an efficient backbone assignment tool for NMR studies of proteins.

    PubMed

    Kumar, Dinesh

    2013-09-01

    Sequence specific resonance assignment of proteins forms the basis for variety of structural and functional proteomics studies by NMR. In this context, an efficient standalone method for rapid assignment of backbone ((1)H, (15)N, (13)C(α) and (13)C') resonances of proteins has been presented here. Compared to currently available strategies used for the purpose, the method employs only a single reduced dimensionality experiment--(4,3)D-hnCOCANH and exploits the linear combinations of backbone ((13)C(α) and (13)C') chemical shifts to achieve a dispersion relatively better compared to those of individual chemical shifts (see the text). The resulted increased dispersion of peaks--which is different in sum (CA + CO) and difference (CA - CO) frequency regions--greatly facilitates the analysis of the spectrum by resolving the problems (associated with routine assignment strategies) arising because of degenerate amide (15)N and backbone (13)C chemical shifts. Further, the spectrum provides direct distinction between intra- and inter-residue correlations because of their opposite peak signs. The other beneficial feature of the spectrum is that it provides: (a) multiple unidirectional sequential (i→i + 1) (15)N and (13)C correlations and (b) facile identification of certain specific triplet sequences which serve as check points for mapping the stretches of sequentially connected HSQC cross peaks on to the primary sequence for assigning the resonances sequence specifically. On top of all this, the F₂-F₃ planes of the spectrum corresponding to sum (CA + CO) and difference (CA - CO) chemical shifts enable rapid and unambiguous identification of sequential HSQC peaks through matching their coordinates in these two planes (see the text). Overall, the experiment presented here will serve as an important backbone assignment tool for variety of structural and functional proteomics and drug discovery research programs by NMR involving well behaved small folded proteins (MW

  17. Integrating environmental isoscapes for spatiotemporal assignment

    NASA Astrophysics Data System (ADS)

    Bowen, G.; Bataille, C.; Kennedy, C.; Zhang, T.; West, J.

    2012-04-01

    Numerous case studies in the ecological and forensic fields have illustrated the potential utility of light stable isotopes as tracers of the geographic origin of biological materials. However, a number of critical challenges continue to limit the application of these tools, among them (1) limitations to our knowledge of isotopic values expected for materials formed at particular locations and times, (2) uncertainty in our understanding of the interplay between temporal and spatial variation in the isotope 'signature' transferred to isotopic materials, and (3) lack of robust, widely used models for quantitative statistical assessment of spatiotemporal origin and associated uncertainty. In order to acknowledge and address each of these limitations, we present new models and analysis of spatiotemporal variation in the stable isotope ratios of hydrogen, oxygen, and strontium in the environment, representing three isotope systems with strong and complementary potential for provenancing applications. We demonstrate a statistical framework for the integration of these isoscapes in assignment problems and describe how this toolkit has been made broadly accessible through the IsoMAP web-GIS portal.

  18. Safety Problems of Electric and Magnetic Fields and Experimental Magnetic Fusion Facilities 3.Biological Effects of Low-Frequency Electromagnetic Fields

    NASA Astrophysics Data System (ADS)

    Miyakoshi, Junji

    The possible health hazard of exposure to low-frequency magnetic fields has become an issue of considerable public concern. Although many epidemiological studies have done, the results are inconsistent to explain an association between exposure to the magnetic fields in the environment and apparent cancer. In in vitro studies, the existence of the effects of the magnetic fields at low flux density has also been contradictory in various reports. This paper reviews studies on cellular and molecular effects of low-frequency magnetic fields.

  19. Telescope loading: A problem reduction approach

    NASA Technical Reports Server (NTRS)

    Bresina, John L.

    1994-01-01

    This paper presents a problem reduction approach to telescope loading. To study time-varying celestial behavior, astronomers submit periodic observation campaigns which involve a sequence of observations at a given sampling frequency over months or years. The loader's task is to generate an assignment of observation tasks to each night in the time window such that resource demand does not exceed resource capacity and such that the observations usefully contribute to the campaigns' scientific purposes, in a manner that is fair to all participating astronomers.

  20. Assigning and visualizing germline genes in antibody repertoires.

    PubMed

    Frost, Simon D W; Murrell, Ben; Hossain, A S Md Mukarram; Silverman, Gregg J; Pond, Sergei L Kosakovsky

    2015-09-01

    Identifying the germline genes involved in immunoglobulin rearrangements is an essential first step in the analysis of antibody repertoires. Based on our prior work in analysing diverse recombinant viruses, we present IgSCUEAL (Immunoglobulin Subtype Classification Using Evolutionary ALgorithms), a phylogenetic approach to assign V and J regions of immunoglobulin sequences to their corresponding germline alleles, with D regions assigned using a simple pairwise alignment algorithm. We also develop an interactive web application for viewing the results, allowing the user to explore the frequency distribution of sequence assignments and CDR3 region length statistics, which is useful for summarizing repertoires, as well as a detailed viewer of rearrangements and region alignments for individual query sequences. We demonstrate the accuracy and utility of our method compared with sequence similarity-based approaches and other non-phylogenetic model-based approaches, using both simulated data and a set of evaluation datasets of human immunoglobulin heavy chain sequences. IgSCUEAL demonstrates the highest accuracy of V and J assignment amongst existing approaches, even when the reassorted sequence is highly mutated, and can successfully cluster sequences on the basis of shared V/J germline alleles.

  1. NASN position statement: caseload assignments.

    PubMed

    Durant, Bonnie V; Gibbons, Linda J; Poole, Cynthia; Suessmanm, Mary; Wyckoff, Leah

    2011-01-01

    It is the position of the National Association of School Nurses (NASN) that schools should employ professionally prepared Registered Nurses, to conduct and supervise school health programs which address the variety of health problems experienced by school children. NASN recommends a formula-based approach with minimum ratios of nurses-to-students depending on the needs of the student populations as follows: 1:750 for students in the general population, 1:225 in the student populations requiring daily professional school nursing services or interventions, 1:125 in student populations with complex health care needs, and 1:1 may be necessary for individual students who require daily and continuous professional nursing services. Other factors that should be considered in the formula-based approach are number of students on free or reduced lunch, number of students with a medical home, and average number of emergency services per year.

  2. NASN position statement: caseload assignments.

    PubMed

    Durant, Bonnie V; Gibbons, Linda J; Poole, Cynthia; Suessmanm, Mary; Wyckoff, Leah

    2011-01-01

    It is the position of the National Association of School Nurses (NASN) that schools should employ professionally prepared Registered Nurses, to conduct and supervise school health programs which address the variety of health problems experienced by school children. NASN recommends a formula-based approach with minimum ratios of nurses-to-students depending on the needs of the student populations as follows: 1:750 for students in the general population, 1:225 in the student populations requiring daily professional school nursing services or interventions, 1:125 in student populations with complex health care needs, and 1:1 may be necessary for individual students who require daily and continuous professional nursing services. Other factors that should be considered in the formula-based approach are number of students on free or reduced lunch, number of students with a medical home, and average number of emergency services per year. PMID:21291082

  3. Lift and moment coefficients expanded to the seventh power of frequency for oscillating rectangular wings in supersonic flow and applied to a specific flutter problem

    NASA Technical Reports Server (NTRS)

    Nelson, Herbert C; Rainey, Ruby A; Watkins, Charles E

    1954-01-01

    Linearized theory for compressible unsteady flow is used to derive the velocity potential and lift and moment coefficients in the form of oscillating rectangular wing moving at a constant supersonic speed. Closed expressions for the velocity potential and lift and moment coefficients associated with pitching and translation are given to seventh power of the frequency. These expressions extend the range of usefulness of NACA report 1028 in which similar expressions were derived to the third power of the frequency of oscillation. For example, at a Mach number of 10/9 the expansion of the potential to the third power is an accurate representation of the potential for values of the reduced frequency only up to about 0.08; whereas the expansion of the potential to the seventh power is an accurate representation for values of the reduced frequency up to about 0.2. The section and total lift and moment coefficients are discussed with the aid of several figures. In addition, flutter speeds obtained in the Mach number range from 10/9 to 10/6 for a rectangular wing of aspect ratio 4.53 by using section coefficients derived on the basis of three-dimensional flow are compared with flutter speeds for this wing obtained by using coefficients derived on the basis of two-dimensional flow.

  4. Preference in random assignment: implications for the interpretation of randomized trials.

    PubMed

    Macias, Cathaleene; Gold, Paul B; Hargreaves, William A; Aronson, Elliot; Bickman, Leonard; Barreira, Paul J; Jones, Danson R; Rodican, Charles F; Fisher, William H

    2009-09-01

    Random assignment to a preferred experimental condition can increase service engagement and enhance outcomes, while assignment to a less-preferred condition can discourage service receipt and limit outcome attainment. We examined randomized trials for one prominent psychiatric rehabilitation intervention, supported employment, to gauge how often assignment preference might have complicated the interpretation of findings. Condition descriptions, and greater early attrition from services-as-usual comparison conditions, suggest that many study enrollees favored assignment to new rapid-job-placement supported employment, but no study took this possibility into account. Reviews of trials in other service fields are needed to determine whether this design problem is widespread.

  5. A Decision Support System for Supervised Assignment in Banking Decisions

    NASA Astrophysics Data System (ADS)

    Rigopoulos, George; Psarras, John; Askounis, Dimitrios Th.

    This study presents a Decision Support System (DSS) which supports assignment of actions (e.g., numbers, projects, people etc.) into predefined categories according to their score on evaluation criteria. It implements a novel classification algorithm based on multicriteria analysis and fuzzy preference relations. More detailed, assignment to classes is based on the concept of category threshold, which defines at what degree an alternative can be included in a specific category. For each category a threshold is defined by the corresponding decision maker, which indicates its lower limit with respect to the evaluation criteria. Actions are then evaluated according to the criteria and fuzzy inclusion degrees are calculated for each category. Finally, an action is assigned to the category for which the inclusion degree is the maximum. The DSS implements the above classification algorithm, providing a user-friendly interface, which supports decision makers to formulate and solve similar problems. In addition to the DSS, we present a real world application at a classification problem within the environment of a Greek bank. Results derived from evaluation experiments in the business environment provide evidence that the proposed methodology and the DSS can effectively support decision makers in classification decisions. The methodology as well as the proposed DSS can be used to classification problems not only in financial domain but to a variety of domains such as production, environmental, or human resources.

  6. 47 CFR 74.702 - Channel assignments.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ..., AUXILIARY, SPECIAL BROADCAST AND OTHER PROGRAM DISTRIBUTIONAL SERVICES Low Power TV, TV Translator, and TV Booster Stations § 74.702 Channel assignments. (a) An applicant for a new low power TV or TV translator... standard VHF Channels (2 to 13 inclusive) may be assigned to a VHF low power TV or TV translator...

  7. 25 CFR 214.18 - Assignments.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true Assignments. 214.18 Section 214.18 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR ENERGY AND MINERALS LEASING OF OSAGE RESERVATION LANDS, OKLAHOMA, FOR MINING, EXCEPT OIL AND GAS § 214.18 Assignments. Approved leases or any interest therein...

  8. 25 CFR 214.18 - Assignments.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false Assignments. 214.18 Section 214.18 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR ENERGY AND MINERALS LEASING OF OSAGE RESERVATION LANDS, OKLAHOMA, FOR MINING, EXCEPT OIL AND GAS § 214.18 Assignments. Approved leases or any interest therein...

  9. 25 CFR 214.18 - Assignments.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false Assignments. 214.18 Section 214.18 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR ENERGY AND MINERALS LEASING OF OSAGE RESERVATION LANDS, OKLAHOMA, FOR MINING, EXCEPT OIL AND GAS § 214.18 Assignments. Approved leases or any interest therein...

  10. 25 CFR 214.18 - Assignments.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false Assignments. 214.18 Section 214.18 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR ENERGY AND MINERALS LEASING OF OSAGE RESERVATION LANDS, OKLAHOMA, FOR MINING, EXCEPT OIL AND GAS § 214.18 Assignments. Approved leases or any interest therein...

  11. 32 CFR 241.3 - Assignment authority.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...) MISCELLANEOUS PILOT PROGRAM FOR TEMPORARY EXCHANGE OF INFORMATION TECHNOLOGY PERSONNEL § 241.3 Assignment authority. The Secretary of Defense may with the agreement, of the private sector organization concerned, arrange for the temporary assignment of a DoD employee to a private sector organization or accept...

  12. Detecting Plagiarism in MS Access Assignments

    ERIC Educational Resources Information Center

    Singh, Anil

    2013-01-01

    Assurance of individual effort from students in computer-based assignments is a challenge. Due to digitization, students can easily use a copy of their friend's work and submit it as their own. Plagiarism in assignments puts students who cheat at par with those who work honestly and this compromises the learning evaluation process. Using a…

  13. 7 CFR 623.19 - Assignments.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 6 2013-01-01 2013-01-01 false Assignments. 623.19 Section 623.19 Agriculture Regulations of the Department of Agriculture (Continued) NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE WATER RESOURCES EMERGENCY WETLANDS RESERVE PROGRAM § 623.19 Assignments. Any participant...

  14. 7 CFR 1467.17 - Assignments.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 10 2011-01-01 2011-01-01 false Assignments. 1467.17 Section 1467.17 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS WETLANDS RESERVE PROGRAM § 1467.17 Assignments. Any...

  15. Effects of Individualized Assignments on Biology Achievement.

    ERIC Educational Resources Information Center

    Kremer, Philip L.

    1983-01-01

    Compared detailed (favoring field dependence and induction) and nondetailed (favoring field dependence and deduction) assignments on biology achievement of grade 10 male students (N=95) over a seven-month period. Detailed assignments, employing pictorial and verbal block diagrams and high structure, significantly enhanced learning among some…

  16. 7 CFR 623.19 - Assignments.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 6 2010-01-01 2010-01-01 false Assignments. 623.19 Section 623.19 Agriculture Regulations of the Department of Agriculture (Continued) NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE WATER RESOURCES EMERGENCY WETLANDS RESERVE PROGRAM § 623.19 Assignments. Any participant...

  17. 7 CFR 625.17 - Assignments.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 6 2010-01-01 2010-01-01 false Assignments. 625.17 Section 625.17 Agriculture Regulations of the Department of Agriculture (Continued) NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE WATER RESOURCES HEALTHY FORESTS RESERVE PROGRAM § 625.17 Assignments. Any person entitled to...

  18. 47 CFR 74.702 - Channel assignments.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ..., AUXILIARY, SPECIAL BROADCAST AND OTHER PROGRAM DISTRIBUTIONAL SERVICES Low Power TV, TV Translator, and TV Booster Stations § 74.702 Channel assignments. (a) An applicant for a new low power TV or TV translator... standard VHF Channels (2 to 13 inclusive) may be assigned to a VHF low power TV or TV translator...

  19. 47 CFR 74.702 - Channel assignments.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ..., AUXILIARY, SPECIAL BROADCAST AND OTHER PROGRAM DISTRIBUTIONAL SERVICES Low Power TV, TV Translator, and TV Booster Stations § 74.702 Channel assignments. (a) An applicant for a new low power TV or TV translator... standard VHF Channels (2 to 13 inclusive) may be assigned to a VHF low power TV or TV translator...

  20. 47 CFR 74.702 - Channel assignments.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ..., AUXILIARY, SPECIAL BROADCAST AND OTHER PROGRAM DISTRIBUTIONAL SERVICES Low Power TV, TV Translator, and TV Booster Stations § 74.702 Channel assignments. (a) An applicant for a new low power TV or TV translator... standard VHF Channels (2 to 13 inclusive) may be assigned to a VHF low power TV or TV translator...

  1. 47 CFR 74.702 - Channel assignments.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ..., AUXILIARY, SPECIAL BROADCAST AND OTHER PROGRAM DISTRIBUTIONAL SERVICES Low Power TV, TV Translator, and TV Booster Stations § 74.702 Channel assignments. (a) An applicant for a new low power TV or TV translator... standard VHF Channels (2 to 13 inclusive) may be assigned to a VHF low power TV or TV translator...

  2. Individualized Assignments in an Experimental Psychology Course.

    ERIC Educational Resources Information Center

    Hovancik, John R.

    1984-01-01

    A computer is used to individualize student assignments in statistics. The principal benefit of individualized activities is that they emphasize decision-making processes rather than correct answers. Students in an individualized assignment group scored higher on an examination than those in a comparison group. (RM)

  3. Online Discussion Assignments Improve Students' Class Preparation

    ERIC Educational Resources Information Center

    Lineweaver, Tara T.

    2010-01-01

    To increase the number of students who read the text before class and to promote student interaction centering on text material, I developed an online discussion assignment as a required component of a cognitive psychology course. Across 2 studies, this assignment had a limited effect on examination performance, but students completing online…

  4. Using Guided Assignments To Teach Literature.

    ERIC Educational Resources Information Center

    Beach, Richard; And Others

    This document provides a rationale (theory) and some models (application) to help secondary teachers develop their own "guided assignments"--road maps which offer young readers structured assistance in reading literature. The guide's first section provides a theoretical framework and blueprint for guided assignments. It begins by explaining the…

  5. Stress Assignment in Reading Italian Polysyllabic Pseudowords

    ERIC Educational Resources Information Center

    Sulpizio, Simone; Arduino, Lisa S.; Paizi, Despina; Burani, Cristina

    2013-01-01

    In 4 naming experiments we investigated how Italian readers assign stress to pseudowords. We assessed whether participants assign stress following distributional information such as stress neighborhood (the proportion and number of existent words sharing orthographic ending and stress pattern) and whether such distributional information affects…

  6. 7 CFR 1415.16 - Assignments.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false Assignments. 1415.16 Section 1415.16 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS GRASSLANDS RESERVE PROGRAM § 1415.16 Assignments. (a)...

  7. 7 CFR 1415.16 - Assignments.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 10 2013-01-01 2013-01-01 false Assignments. 1415.16 Section 1415.16 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS GRASSLANDS RESERVE PROGRAM § 1415.16 Assignments. (a)...

  8. 7 CFR 1415.16 - Assignments.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 10 2012-01-01 2012-01-01 false Assignments. 1415.16 Section 1415.16 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS GRASSLANDS RESERVE PROGRAM § 1415.16 Assignments. (a)...

  9. 7 CFR 1415.16 - Assignments.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 10 2014-01-01 2014-01-01 false Assignments. 1415.16 Section 1415.16 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS GRASSLANDS RESERVE PROGRAM § 1415.16 Assignments. (a)...

  10. 7 CFR 1415.16 - Assignments.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 10 2011-01-01 2011-01-01 false Assignments. 1415.16 Section 1415.16 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS GRASSLANDS RESERVE PROGRAM § 1415.16 Assignments. (a)...

  11. 37 CFR 3.56 - Conditional assignments.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2010-07-01 2010-07-01 false Conditional assignments. 3.56 Section 3.56 Patents, Trademarks, and Copyrights UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE GENERAL ASSIGNMENT, RECORDING AND RIGHTS OF ASSIGNEE Date and Effect of Recording §...

  12. 37 CFR 3.56 - Conditional assignments.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2013-07-01 2013-07-01 false Conditional assignments. 3.56 Section 3.56 Patents, Trademarks, and Copyrights UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE GENERAL ASSIGNMENT, RECORDING AND RIGHTS OF ASSIGNEE Date and Effect of Recording §...

  13. 37 CFR 3.56 - Conditional assignments.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2012-07-01 2012-07-01 false Conditional assignments. 3.56 Section 3.56 Patents, Trademarks, and Copyrights UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE GENERAL ASSIGNMENT, RECORDING AND RIGHTS OF ASSIGNEE Date and Effect of Recording §...

  14. 37 CFR 3.56 - Conditional assignments.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2014-07-01 2014-07-01 false Conditional assignments. 3.56 Section 3.56 Patents, Trademarks, and Copyrights UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE GENERAL ASSIGNMENT, RECORDING AND RIGHTS OF ASSIGNEE Date and Effect of Recording §...

  15. 37 CFR 3.56 - Conditional assignments.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2011-07-01 2011-07-01 false Conditional assignments. 3.56 Section 3.56 Patents, Trademarks, and Copyrights UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE GENERAL ASSIGNMENT, RECORDING AND RIGHTS OF ASSIGNEE Date and Effect of Recording §...

  16. An Individualized Observation Assignment in Professional Preparation.

    ERIC Educational Resources Information Center

    Chapman, Nancy L.

    This paper describes an assignment designed to improve undergraduate physical education students' observational skills through skill analysis in volleyball. Early in the term, students are videotaped while performing two major volleyball skills. After several weeks of instruction on various volleyball skills, students complete the assignment which…

  17. Gapminder: An AP Human Geography Lab Assignment

    ERIC Educational Resources Information Center

    Keller, Kenneth H.

    2012-01-01

    This lesson is designed as a lab assignment for Advanced Placement (AP) Human Geography students wherein they use the popular Gapminder web site to compare levels of development in countries from different world regions. For this lesson, it is important for the teacher to practice with Gapminder before giving the assignment to students. (Contains…

  18. Block-decoupling vibration control using eigenstructure assignment

    NASA Astrophysics Data System (ADS)

    Wei, Xiaojun; Mottershead, John E.

    2016-06-01

    A theoretical study is presented on the feasibility of applying active control for the purpose of vibration isolation in lightweight structures by block diagonalisation of the system matrices and at the same time assigning eigenvalues (natural frequencies and damping) to the chosen substructures separately. The methodology, based on eigenstructure assignment using the method of receptances, is found to work successfully when the eigenvalues of the open-loop system are controllable and the open- and closed-loop eigenvalues are distinct. In the first part of the paper results are obtained under the restriction that the mass matrix is diagonal (lumped). This is certainly applicable in the case of numerous engineering systems consisting of discrete masses with flexible interconnections of negligible mass. Later in the paper this restriction is lifted to allow bandedness of the mass matrix. Several numerical examples are used to illustrate the working of the proposed algorithm.

  19. A General Chemistry Assignment Analyzing Environmental Contamination for the Depue, IL, National Superfund Site

    ERIC Educational Resources Information Center

    Saslow Gomez, Sarah A.; Faurie-Wisniewski, Danielle; Parsa, Arlen; Spitz, Jeff; Spitz, Jennifer Amdur; Loeb, Nancy C.; Geiger, Franz M.

    2015-01-01

    The classroom exercise outlined here is a self-directed assignment that connects students to the environmental contamination problem surrounding the DePue Superfund site. By connecting chemistry knowledge gained in the classroom with a real-world problem, students are encouraged to personally connect with the problem while simultaneously…

  20. MHD-model for low-frequency waves in a tokamak with toroidal plasma rotation and problem of existence of global geodesic acoustic modes

    SciTech Connect

    Lakhin, V. P.; Sorokina, E. A. E-mail: vilkiae@gmail.com; Ilgisonis, V. I.; Konovaltseva, L. V.

    2015-12-15

    A set of reduced linear equations for the description of low-frequency perturbations in toroidally rotating plasma in axisymmetric tokamak is derived in the framework of ideal magnetohydrodynamics. The model suitable for the study of global geodesic acoustic modes (GGAMs) is designed. An example of the use of the developed model for derivation of the integral conditions for GGAM existence and of the corresponding dispersion relation is presented. The paper is dedicated to the memory of academician V.D. Shafranov.

  1. An automated approach to seed assignment for eye plaque brachytherapy.

    PubMed

    Koh, T S; Yeung, I; Tong, S

    2000-07-01

    Episcleral plaques are commonly used for the treatment of ocular tumours such as choroidal melanoma. Treatment planning involves the assignment of seeds to slots on the plaque to achieve a desired dose rate distribution. Seed assignment is rather straightforward if seeds are ordered on demand. However, the assignment task becomes tedious and laborious if the seeds have to be chosen from an existing stock of seeds with different activities. To date, this task has usually been performed by a human planner through trial and error. An algorithm has been developed to automate the task of seed assignment using a mixed-integer programming method. We also explore ways to simplify the problem such that the method becomes practical in most facilities. We have tested the method on three randomly chosen clinical cases from our past records, to show that the algorithm could yield solutions within a shorter time frame and with less deviation from the desired dose rate distributions, as compared with the solutions from a human counterpart.

  2. Automated Assignment of Proposals to Reviewers

    NASA Technical Reports Server (NTRS)

    Kantak, Anil; Kantak, Anil

    2006-01-01

    A computer program automates the process of selecting unbiased peer reviewers of research proposals submitted to NASA. Heretofore, such selection has been performed by manual searching of two large databases subject to a set of assignment rules. One database lists proposals and proposers; the other database lists potential reviewers. The manual search takes an average of several weeks per proposal. In contrast, the present software can perform the selection in seconds. The program begins by selecting one entry from each database, then applying the assignment rules to this pair of entries. If and only if all the assignment rules are satisfied, the chosen reviewer is assigned to the chosen proposal. The assignment rules enforced by the program are (1) a maximum allowable number of proposals assigned to a single reviewer; (2) a maximum allowable number of reviewers assigned to a single proposal; (3) if the proposing team includes a member affiliated with an industry, then the reviewer must not be affiliated with any industry; and (4) the reviewer must not be a member of the proposing team or affiliated with the same institution as that of a member of the proposing team.

  3. Tracking Teachers' Behavior to Concurrently Decrease Punishment Use with and Problem Behavior in a Child with Autism while Decreasing the Child's Frequency of Negative Statements

    ERIC Educational Resources Information Center

    Zambolin, Krista; Fabrizio, Michael; Ferris, Kelly; Barclay, Suzanne; Carrier, Dana

    2007-01-01

    Intervening with children's problem behavior can be tricky business. Adding punishment procedures into a child's intervention plan can not only add to the trickiness but also switch the attention of on-line staff members away from what should be the goal of any intervention for misbehavior--preventing the misbehavior and teaching functionally…

  4. Boundary element dynamical energy analysis: A versatile method for solving two or three dimensional wave problems in the high frequency limit

    NASA Astrophysics Data System (ADS)

    Chappell, David J.; Tanner, Gregor; Giani, Stefano

    2012-07-01

    Dynamical energy analysis was recently introduced as a new method for determining the distribution of mechanical and acoustic wave energy in complex built up structures. The technique interpolates between standard statistical energy analysis and full ray tracing, containing both of these methods as limiting cases. As such the applicability of the method is wide ranging and additionally includes the numerical modelling of problems in optics and more generally of linear wave problems in electromagnetics. In this work we consider a new approach to the method with enhanced versatility, enabling three-dimensional problems to be handled in a straightforward manner. The main challenge is the high dimensionality of the problem: we determine the wave energy density both as a function of the spatial coordinate and momentum (or direction) space. The momentum variables are expressed in separable (polar) coordinates facilitating the use of products of univariate basis expansions. However this is not the case for the spatial argument and so we propose to make use of automated mesh generating routines to both localise the approximation, allowing quadrature costs to be kept moderate, and give versatility in the code for different geometric configurations.

  5. 31 CFR 306.40 - Execution of assignments.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... the presence of an individual authorized to certify assignments. All assignments must be made on the... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Execution of assignments. 306.40.... SECURITIES Assignments of Registered Securities-General § 306.40 Execution of assignments. The assignment...

  6. Safety Problems of Electric and Magnetic Fields and Experimental Magnetic Fusion Facilities 4.Biolosical Effects of High-Frequency Electromagnetic Fields

    NASA Astrophysics Data System (ADS)

    Fujiwara, Osamu

    With the expanding use of portable telephones, public concerns regarding potential health hazards due to the absorption of electromagnetic energy have been growing. In this article, electromagnetic waves and their resultant biological effects are reviewed. The thermal effects due to RF (radio-frequency) electromagnetic fields and basic proposals for safety standards are described in conjunction with whole-body / localized average SARs (specific absorption rates) being used as bioeffect evaluation measures. Our computed dosimetries of the human head for portable telephones are also shown.

  7. 47 CFR 80.1077 - Frequencies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... assigned from the fixed satellite service, see 47 CFR § 2.106. 11 12 Service to INMARSAT-E EPIRB stations... 47 Telecommunication 5 2011-10-01 2011-10-01 false Frequencies. 80.1077 Section 80.1077... Frequencies. The following table describes the frequencies used in the Global Maritime Distress and...

  8. 47 CFR 80.709 - Frequencies available.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Frequencies available. 80.709 Section 80.709 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES STATIONS IN THE MARITIME SERVICES Alaska Fixed Stations § 80.709 Frequencies available. Frequencies assignable to...

  9. 47 CFR 80.1077 - Frequencies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    .... Feeder links for satellite communications are assigned from the fixed satellite service, see 47 CFR § 2... 47 Telecommunication 5 2012-10-01 2012-10-01 false Frequencies. 80.1077 Section 80.1077... Frequencies. The following table describes the frequencies used in the Global Maritime Distress and...

  10. 47 CFR 101.1005 - Frequencies available.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Frequencies available. 101.1005 Section 101... FIXED MICROWAVE SERVICES Local Multipoint Distribution Service § 101.1005 Frequencies available. (a) The following frequencies are available for assignment to LMDS in two license blocks: Block A of 1,150 MHz...

  11. 47 CFR 80.1077 - Frequencies.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    .... Feeder links for satellite communications are assigned from the fixed satellite service, see 47 CFR § 2... 47 Telecommunication 5 2013-10-01 2013-10-01 false Frequencies. 80.1077 Section 80.1077... Frequencies. The following table describes the frequencies used in the Global Maritime Distress and...

  12. 47 CFR 87.323 - Frequencies.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Frequencies. 87.323 Section 87.323... Aviation Support Stations § 87.323 Frequencies. (a) 121.500 MHz: Emergency and distress only. (b) The frequencies 121.950, 123.300 and 123.500 MHz are available for assignment to aviation support stations...

  13. 47 CFR 101.1005 - Frequencies available.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Frequencies available. 101.1005 Section 101... FIXED MICROWAVE SERVICES Local Multipoint Distribution Service § 101.1005 Frequencies available. (a) The following frequencies are available for assignment to LMDS in two license blocks: Block A of 1,150 MHz...

  14. 47 CFR 80.709 - Frequencies available.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Frequencies available. 80.709 Section 80.709 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES STATIONS IN THE MARITIME SERVICES Alaska Fixed Stations § 80.709 Frequencies available. Frequencies assignable to...

  15. 47 CFR 80.709 - Frequencies available.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Frequencies available. 80.709 Section 80.709 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES STATIONS IN THE MARITIME SERVICES Alaska Fixed Stations § 80.709 Frequencies available. Frequencies assignable to...

  16. 47 CFR 101.1005 - Frequencies available.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Frequencies available. 101.1005 Section 101... FIXED MICROWAVE SERVICES Local Multipoint Distribution Service § 101.1005 Frequencies available. (a) The following frequencies are available for assignment to LMDS in two license blocks: Block A of 1,150 MHz...

  17. 47 CFR 87.323 - Frequencies.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Frequencies. 87.323 Section 87.323... Aviation Support Stations § 87.323 Frequencies. (a) 121.500 MHz: Emergency and distress only. (b) The frequencies 121.950, 123.300 and 123.500 MHz are available for assignment to aviation support stations...

  18. 47 CFR 87.323 - Frequencies.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Frequencies. 87.323 Section 87.323... Aviation Support Stations § 87.323 Frequencies. (a) 121.500 MHz: Emergency and distress only. (b) The frequencies 121.950, 123.300 and 123.500 MHz are available for assignment to aviation support stations...

  19. 47 CFR 80.709 - Frequencies available.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Frequencies available. 80.709 Section 80.709 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES STATIONS IN THE MARITIME SERVICES Alaska Fixed Stations § 80.709 Frequencies available. Frequencies assignable to...

  20. 47 CFR 101.1005 - Frequencies available.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Frequencies available. 101.1005 Section 101... FIXED MICROWAVE SERVICES Local Multipoint Distribution Service § 101.1005 Frequencies available. (a) The following frequencies are available for assignment to LMDS in two license blocks: Block A of 1,150 MHz...

  1. 47 CFR 101.1005 - Frequencies available.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 5 2013-10-01 2013-10-01 false Frequencies available. 101.1005 Section 101... FIXED MICROWAVE SERVICES Local Multipoint Distribution Service § 101.1005 Frequencies available. (a) The following frequencies are available for assignment to LMDS in two license blocks: Block A of 1,150 MHz...

  2. 47 CFR 80.709 - Frequencies available.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 5 2013-10-01 2013-10-01 false Frequencies available. 80.709 Section 80.709 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES STATIONS IN THE MARITIME SERVICES Alaska Fixed Stations § 80.709 Frequencies available. Frequencies assignable to...

  3. [Frequency of self-reported vocal problems and associated occupational factors in primary schoolteachers in Londrina, Paraná State, Brazil].

    PubMed

    Fillis, Michelle Moreira Abujamra; Andrade, Selma Maffei de; González, Alberto Durán; Melanda, Francine Nesello; Mesas, Arthur Eumann

    2016-01-01

    This study aimed to estimate the prevalence of self-reported vocal problems among primary schoolteachers and to identify associated occupational factors, using a cross-sectional design and face-to-face interviews with 967 teachers in 20 public schools in Londrina, Paraná State, Brazil. Prevalence of self-reported vocal problems was 25.7%. Adjusted analyses showed associations with characteristics of the employment relationship (workweek ≥ 40 hours and poor perception of salaries and health benefits), characteristics of the work environment (number of students per class and exposure to chalk dust and microorganisms), psychological factors (low job satisfaction, limited opportunities to express opinions, worse relationship with superiors, and poor balance between professional and personal life), and violence (insults and bullying). Vocal disorders affected one in four primary schoolteachers and were associated with various characteristics of the teaching profession (both structural and work-related). PMID:26886187

  4. Pseudo-4D triple resonance experiments to resolve HN overlap in the backbone assignment of unfolded proteins.

    PubMed

    Bagai, Ireena; Ragsdale, Stephen W; Zuiderweg, Erik R P

    2011-02-01

    The solution NMR resonance assignment of the protein backbone is most commonly carried out using triple resonance experiments that involve (15)N and (1)HN resonances. The assignment becomes problematic when there is resonance overlap of (15)N-(1)HN cross peaks. For such residues, one cannot unambiguously link the "left" side of the NH root to the "right" side, and the residues associated with such overlapping HN resonances remain often unassigned. Here we present a solution to this problem: a hybrid (4d,3d) reduced-dimensionality HN(CO)CA(CON)CA sequence. In this experiment, the Ca(i) resonance is modulated with the frequency of the Ca(i-1) resonance, which helps in resolving the ambiguity involved in connecting the Ca(i) and Ca(i-1) resonances for overlapping NH roots. The experiment has limited sensitivity, and is only suited for small or unfolded proteins. In a companion experiment, (4d,3d) reduced-dimensionality HNCO(N)CA, the Ca(i) resonance is modulated with the frequency of the CO(i-1) resonance, hence resolving the ambiguity existent in pairing up the Ca(i) and CO(i-1) resonances for overlapping NH roots. PMID:21190062

  5. A New Gimmick for Assigning Absolute Configuration.

    ERIC Educational Resources Information Center

    Ayorinde, F. O.

    1983-01-01

    A five-step procedure is provided to help students in making the assignment absolute configuration less bothersome. Examples for both single (2-butanol) and multi-chiral carbon (3-chloro-2-butanol) molecules are included. (JN)

  6. Shakespearean Drama: A Pair of Writing Assignments.

    ERIC Educational Resources Information Center

    Kory, Fern

    1996-01-01

    Describes two writing assignments that may be used to make Shakespeare more approachable and understandable: first a paraphrase of a passage, and second a memo to an actor interpreting the same passage. (TB)

  7. Quantum probability assignment limited by relativistic causality

    PubMed Central

    Han, Yeong Deok; Choi, Taeseung

    2016-01-01

    Quantum theory has nonlocal correlations, which bothered Einstein, but found to satisfy relativistic causality. Correlation for a shared quantum state manifests itself, in the standard quantum framework, by joint probability distributions that can be obtained by applying state reduction and probability assignment that is called Born rule. Quantum correlations, which show nonlocality when the shared state has an entanglement, can be changed if we apply different probability assignment rule. As a result, the amount of nonlocality in quantum correlation will be changed. The issue is whether the change of the rule of quantum probability assignment breaks relativistic causality. We have shown that Born rule on quantum measurement is derived by requiring relativistic causality condition. This shows how the relativistic causality limits the upper bound of quantum nonlocality through quantum probability assignment. PMID:26971717

  8. Directed self-assembly cut mask assignment for unidirectional design

    NASA Astrophysics Data System (ADS)

    Ou, Jiaojiao; Yu, Bei; Gao, Jhih-Rong; Pan, David Z.

    2015-07-01

    Recently, directed self-assembly (DSA) has emerged as a promising lithography solution for cut manufacturing. We perform a comprehensive study on the DSA aware mask optimization problem to provide a DSA friendly design on cut layers. We first formulate the problem as an integer linear programming (ILP) to assign cuts to different guiding templates, targeting both conflict minimization and line-end extension minimization. As ILP may not be scalable for very large size problems, we then propose two speed-up strategies. The first one is to decompose the initial problem into smaller ones and solve them separately, followed by solution merging without much loss of quality. The second one is using the set cover algorithm to decide the DSA guiding pattern assignment, and then legalize the template placement. Our approaches can be naturally extended to handle arbitrary DSA guiding template patterns with complicated shapes. Experimental results show that our methodologies can significantly improve the DSA friendly, i.e., both the unresolved pattern number and the line-end extensions can be reduced.

  9. 47 CFR 80.391 - Frequencies for developmental stations.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Frequencies for developmental stations. 80.391... SERVICES STATIONS IN THE MARITIME SERVICES Frequencies Developmental Stations § 80.391 Frequencies for... frequency or frequencies assignable to the service and class of station they propose to operate....

  10. Confirmed Assignments of Isomeric Dimethylbenzyl Radicals Generated by Corona Discharge

    NASA Astrophysics Data System (ADS)

    Yoon, Young Wook; Lee, Sang Kuk

    2012-06-01

    Polymethylbenzyl radicals, multi-methyl-substituted benzyl radicals, have been believed to be an ideal model for understanding the torsional effect of methyl group and substitution effect on electronic transition. These radicals are mainly generated from polymethylbenzenes by electric discharge for spectroscopic observation. However, the existence of several methyl groups on the benzene ring may produce several isomeric polymethylbenzyl radicals by removing one of the C-H bonds of each methyl group at different substitution position, which makes the assignment of spectrum ambiguous. In this work, the controversial vibronic assignments of isomeric dimethylbenzyl radicals were clearly resolved by using different precursors. By using corresponding dimethylbenzyl chlorides as precursors, we identified the origins of the vibronic bands of the dimethylbenzyl radicals generated by corona discharge of precursors 1,2,3- and 1,2,4-trimethylbenzenes. From the analysis of the spectra observed from the dimethylbenzyl chlorides in a corona excited supersonic expansion using a pinhole-type glass nozzle, we revised previous assignments of the 2,6- and 2,3-dimethylbenzyl radicals as well as the 3,4-, 2,4-, and 2,5-dimethylbenzyl radicals. In addition, spectroscopic data of electronic transition and vibrational mode frequencies in the ground electronic state of each isomer were accurately determined by comparing them with those obtained by an ab initio calculation and with the known vibrational data of precursors.

  11. Statistical mechanics of structural and temporal credit assignment effects on learning in neural networks

    NASA Astrophysics Data System (ADS)

    Saito, Hiroshi; Katahira, Kentaro; Okanoya, Kazuo; Okada, Masato

    2011-05-01

    Neural networks can learn flexible input-output associations by changing their synaptic weights. The representational performance and learning dynamics of neural networks are intensively studied in several fields. Neural networks face the “credit assignment problem” in situations in which only incomplete performance evaluations are available. The credit assignment problem is that a network should assign credit or blame for its behaviors according to the contribution to the network performance. In reinforcement learning, a scalar evaluation signal is delivered to a network. The two main types of credit assignment problems in reinforcement learning are structural and temporal, that is, which parameters of the network (structural) and which past network activities (temporal) are related to an evaluation signal given from an environment. In this study, we apply statistical mechanical analysis to the learning processes in a simple neural network model to clarify the effects of two kinds of credit assignments and their interactions. Our model is based on node perturbation learning with eligibility trace. Node perturbation is a stochastic gradient learning method that can solve structural credit assignment problems by introducing a perturbation into the system output. The eligibility trace preserves the past network activities with a temporal credit to deal with the delay of an instruction signal. We show that both credit assignment effects mutually interact and the optimal time constant of the eligibility trace varies not only for the evaluation delay but also the network size.

  12. 47 CFR 90.719 - Individual channels available for assignment in the 220-222 MHz band.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Individual channels available for assignment in... Licensing and Use of Frequencies in the 220-222 MHz Band § 90.719 Individual channels available for assignment in the 220-222 MHz band. (a) Channels 171 through 200 are available to both Government and...

  13. BDDCS Predictions, Self-Correcting Aspects of BDDCS Assignments, BDDCS Assignment Corrections, and Classification for more than 175 Additional Drugs.

    PubMed

    Hosey, Chelsea M; Chan, Rosa; Benet, Leslie Z

    2016-01-01

    The biopharmaceutics drug disposition classification system was developed in 2005 by Wu and Benet as a tool to predict metabolizing enzyme and drug transporter effects on drug disposition. The system was modified from the biopharmaceutics classification system and classifies drugs according to their extent of metabolism and their water solubility. By 2010, Benet et al. had classified over 900 drugs. In this paper, we incorporate more than 175 drugs into the system and amend the classification of 13 drugs. We discuss current and additional applications of BDDCS, which include predicting drug-drug and endogenous substrate interactions, pharmacogenomic effects, food effects, elimination routes, central nervous system exposure, toxicity, and environmental impacts of drugs. When predictions and classes are not aligned, the system detects an error and is able to self-correct, generally indicating a problem with initial class assignment and/or measurements determining such assignments.

  14. Stress assignment in reading Italian polysyllabic pseudowords.

    PubMed

    Sulpizio, Simone; Arduino, Lisa S; Paizi, Despina; Burani, Cristina

    2013-01-01

    In 4 naming experiments we investigated how Italian readers assign stress to pseudowords. We assessed whether participants assign stress following distributional information such as stress neighborhood (the proportion and number of existent words sharing orthographic ending and stress pattern) and whether such distributional information affects naming speed. Experiments 1 and 2 tested how readers assign stress to pseudowords. The results showed that participants assign stress on the basis of the pseudowords' stress neighborhood, but only when this orthographic/phonological information is widely represented in the lexicon. Experiments 3 and 4 tested the naming speed of pseudowords with different stress patterns. Participants were faster in reading pseudowords with antepenultimate than with penultimate stress. The effect was not driven by distributional information, but it was related to the stage of articulation planning. Overall, the experiments showed that, under certain conditions, readers assign stress using orthographic/phonological distributional information. However, the distributional information does not speed up pseudoword naming, which is affected by stress computation at the level of the articulation planning of the stimulus. It is claimed that models of reading aloud and speech production should be merged at the level of phonological encoding, when segmental and metrical information are assembled and articulation is planned.

  15. Application of neural networks to channel assignment for cellular CDMA networks with multiple services and mobile base stations

    NASA Astrophysics Data System (ADS)

    Hortos, William S.

    1996-03-01

    The use of artificial neural networks to the channel assignment problem for cellular code- division multiple access (CDMA) telecommunications systems is considered. CDMA takes advantage of voice activity and spatial isolation because its capacity is only interference limited, unlike time-division multiple access (TDMA) and frequency-division multiple access (FDMA) where capacities are bandwidth limited. Any reduction in interference in CDMA translates linearly into increased capacity. FDMA and TDMA use a frequency reuse pattern as a method to increase capacity, while CDMA reuses the same frequency for all cells and gains a reuse efficiency by means of orthogonal codes. The latter method can improve system capacity by factors of four to six over digital TDMA or FDMA. Cellular carriers are planning to provide multiple communication services using CDMA in the next generation cellular system infrastructure. The approach of this study is the use of neural network methods for automatic and local network control, based on traffic behavior in specific cell cites and demand history. The goal is to address certain problems associated with the management of mobile and personal communication services in a cellular radio communications environment. In planning a cellular radio network, the operator assigns channels to the radio cells so that the probability of the processed carrier-to-interference ratio, CII, exceeding a predefined value is sufficiently low. The RF propagation, determined from the topography and infrastructure in the operating area, is used in conjunction with the densities of expected communications traffic to formulate interference constraints. These constraints state which radio cells may use the same code (channel) or adjacent channels at a time. The traffic loading and the number of service grades can also be used to calculate the number of required channels (codes) for each cell. The general assignment problem is the task of assigning the required number

  16. Credit assignment in movement-dependent reinforcement learning.

    PubMed

    McDougle, Samuel D; Boggess, Matthew J; Crossley, Matthew J; Parvin, Darius; Ivry, Richard B; Taylor, Jordan A

    2016-06-14

    When a person fails to obtain an expected reward from an object in the environment, they face a credit assignment problem: Did the absence of reward reflect an extrinsic property of the environment or an intrinsic error in motor execution? To explore this problem, we modified a popular decision-making task used in studies of reinforcement learning, the two-armed bandit task. We compared a version in which choices were indicated by key presses, the standard response in such tasks, to a version in which the choices were indicated by reaching movements, which affords execution failures. In the key press condition, participants exhibited a strong risk aversion bias; strikingly, this bias reversed in the reaching condition. This result can be explained by a reinforcement model wherein movement errors influence decision-making, either by gating reward prediction errors or by modifying an implicit representation of motor competence. Two further experiments support the gating hypothesis. First, we used a condition in which we provided visual cues indicative of movement errors but informed the participants that trial outcomes were independent of their actual movements. The main result was replicated, indicating that the gating process is independent of participants' explicit sense of control. Second, individuals with cerebellar degeneration failed to modulate their behavior between the key press and reach conditions, providing converging evidence of an implicit influence of movement error signals on reinforcement learning. These results provide a mechanistically tractable solution to the credit assignment problem. PMID:27247404

  17. Credit assignment in movement-dependent reinforcement learning.

    PubMed

    McDougle, Samuel D; Boggess, Matthew J; Crossley, Matthew J; Parvin, Darius; Ivry, Richard B; Taylor, Jordan A

    2016-06-14

    When a person fails to obtain an expected reward from an object in the environment, they face a credit assignment problem: Did the absence of reward reflect an extrinsic property of the environment or an intrinsic error in motor execution? To explore this problem, we modified a popular decision-making task used in studies of reinforcement learning, the two-armed bandit task. We compared a version in which choices were indicated by key presses, the standard response in such tasks, to a version in which the choices were indicated by reaching movements, which affords execution failures. In the key press condition, participants exhibited a strong risk aversion bias; strikingly, this bias reversed in the reaching condition. This result can be explained by a reinforcement model wherein movement errors influence decision-making, either by gating reward prediction errors or by modifying an implicit representation of motor competence. Two further experiments support the gating hypothesis. First, we used a condition in which we provided visual cues indicative of movement errors but informed the participants that trial outcomes were independent of their actual movements. The main result was replicated, indicating that the gating process is independent of participants' explicit sense of control. Second, individuals with cerebellar degeneration failed to modulate their behavior between the key press and reach conditions, providing converging evidence of an implicit influence of movement error signals on reinforcement learning. These results provide a mechanistically tractable solution to the credit assignment problem.

  18. 5 CFR 870.902 - Making an assignment.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... (CONTINUED) FEDERAL EMPLOYEES' GROUP LIFE INSURANCE PROGRAM Assignments of Life Insurance § 870.902 Making an assignment. (a) To assign insurance, an insured individual must complete an approved assignment form. Only... intent to irrevocably assign all ownership of the insurance. The form must also be witnessed and...

  19. Medicare Accountable Care Organizations: Beneficiary Assignment Update.

    PubMed

    Vaughn, Thomas; MacKinney, A Clinton; Mueller, Keith J; Ullrich, Fred; Zhu, Xi

    2016-06-01

    This brief updates Brief No. 2014-3 and explains changes in the Centers for Medicare & Medicaid Services (CMS) Accountable Care Organization (ACO) regulations issued in June 2015 pertaining to beneficiary assignment for Medicare Shared Savings Program ACOs. Overall, the regulatory changes are intended to (1) encourage ACOs to participate in two-sided risk contracts, (2) increase the likelihood that beneficiaries are assigned to the physician (and ACO) from whom they receive most of their primary care services, and (3) make it easier for Federally Qualified Health Centers (FQHCs) and Rural Health Clinics (RHCs) to participate in ACOs. Understanding ACO beneficiary assignment policies is critical for ACO in managing their panel of ACO providers and beneficiaries. PMID:27416650

  20. From course assignment paper to publishable manuscript.

    PubMed

    Rew, Lynn

    2012-12-01

    Both undergraduate and graduate nursing students are expected to write numerous papers in their educational programs; however, most of these papers are never published. Many students and faculty lack the skills needed to convert a course assignment paper to a publishable manuscript. The purpose of this article is to describe 10 steps that can transform a course assignment paper into a publishable manuscript. These steps include outlining, clarifying the topic, clearly stating the purpose, identifying an appropriate audience, revising with faculty's feedback, querying journal editors, revising to conform to journal's author guidelines, requesting and responding to peer feedback, and finally editing and proofreading prior to submitting the manuscript. Faculty members are encouraged to make writing assignments that students can then convert to publishable manuscripts. Such publications form an essential cornerstone of professional holistic nursing.

  1. Demand Assignment in the ACTS LBR System

    NASA Technical Reports Server (NTRS)

    White, Lawrence W.; Palmer, Larry C.

    1990-01-01

    On the Advanced Communications Technology Satellite (ACTS) being developed at NASA Lewis, low-burst-rate (LBR) traffic stations will access the ACTS multibeam package via two hopping beams that can be directed at certain areas in the continental U.S. An onboard baseband processor (BBP) demodulates uplink traffic, switches it between uplink and downlink beams at baseband, and then remodulates it for retransmission at 20 GHz. This study describes the demand-assigned operation of the ACTS LBR system, where the onboard switch is remote from both traffic stations and master control station (MCS). Network control uses inbound and outbound orderwire channels and a BBP control channel, allowing the MCS to coordinate assignment of individual 64-kb/s spacecraft channels. Models are developed to simulate the dynamics of the assignment process and verify the call blocking behavior, to predict control channel loads, and to evaluate algorithms for burst time plan rearrangement.

  2. Nursing assignment patterns and patient outcomes.

    PubMed

    Sandhu, B; Kerouac, S; Duquette, A; Turchon, S

    1992-01-01

    This article analyzes nursing assignment patterns and patient outcomes critically and comprehensively. Synthesizing empirical data over the past eight years, patient outcomes such as patient satisfaction, and quality of care were examined in association with the main nursing assignment patterns encountered in the literature: case, functional, team, primary and modular. The research results examined do not clearly delineate one assignment pattern or another and it remains illusive, from this analysis, to answer the question most often asked of administrators: "What type of organizational mode would best contribute to the quality of care?" However, this analysis should lead towards decisional impetus for the implementation of new systems of delivery of care, in the present context of limited resources and nursing shortage.

  3. Medicare Accountable Care Organizations: Beneficiary Assignment Update.

    PubMed

    Vaughn, Thomas; MacKinney, A Clinton; Mueller, Keith J; Ullrich, Fred; Zhu, Xi

    2016-06-01

    This brief updates Brief No. 2014-3 and explains changes in the Centers for Medicare & Medicaid Services (CMS) Accountable Care Organization (ACO) regulations issued in June 2015 pertaining to beneficiary assignment for Medicare Shared Savings Program ACOs. Overall, the regulatory changes are intended to (1) encourage ACOs to participate in two-sided risk contracts, (2) increase the likelihood that beneficiaries are assigned to the physician (and ACO) from whom they receive most of their primary care services, and (3) make it easier for Federally Qualified Health Centers (FQHCs) and Rural Health Clinics (RHCs) to participate in ACOs. Understanding ACO beneficiary assignment policies is critical for ACO in managing their panel of ACO providers and beneficiaries.

  4. Writing Assignments that Promote Active Learning

    NASA Astrophysics Data System (ADS)

    Narayanan, M.

    2014-12-01

    Encourage students to write a detailed, analytical report correlating classroom discussions to an important historical event or a current event. Motivate students interview an expert from industry on a topic that was discussed in class. Ask the students to submit a report with supporting sketches, drawings, circuit diagrams and graphs. Propose that the students generate a complete a set of reading responses pertaining to an assigned topic. Require each student to bring in one comment or one question about an assigned reading. The assignment should be a recent publication in an appropriate journal. Have the students conduct a web search on an assigned topic. Ask them to generate a set of ideas that can relate to classroom discussions. Provide the students with a study guide. The study guide should provide about 10 or 15 short topics. Quiz the students on one or two of the topics. Encourage the students to design or develop some creative real-world examples based on a chapter discussed or a topic of interest. Require that students originate, develop, support and defend a viewpoint using a specifically assigned material. Make the students practice using or utilizing a set of new technical terms they have encountered in an assigned chapter. Have students develop original examples explaining the different terms. Ask the students to select one important terminology from the previous classroom discussions. Encourage the students to explain why they selected that particular word. Ask them to talk about the importance of the terminology from the point of view of their educational objectives and future career. Angelo, T. A. (1991). Ten easy pieces: Assessing higher learning in four dimensions. In T. A. Angelo (Ed.), Classroom research: Early lessons from success (pp. 17-31). New Directions for Teaching and Learning, No. 46. San Francisco: Jossey-Bass.

  5. Frequency Allocation; The Radio Spectrum.

    ERIC Educational Resources Information Center

    Federal Communications Commission, Washington, DC.

    The Federal Communications Commission (FCC) assigns segments of the radio spectrum to categories of users, and specific frequencies within each segment to individual users. Since demand for channel space exceeds supply, the process is complex. The radio spectrum can be compared to a long ruler: the portion from 10-540 kiloHertz has been set aside…

  6. Multi-input partial eigenvalue assignment for high order control systems with time delay

    NASA Astrophysics Data System (ADS)

    Zhang, Lei

    2016-05-01

    In this paper, we consider the partial eigenvalue assignment problem for high order control systems with time delay. Ram et al. (2011) [1] have shown that a hybrid method can be used to solve partial quadratic eigenvalue assignment problem of single-input vibratory system. Based on this theory, a rather simple algorithm for solving multi-input partial eigenvalue assignment for high order control systems with time delay is proposed. Our method can assign the expected eigenvalues and keep the no spillover property. The solution can be implemented with only partial information of the eigenvalues and the corresponding eigenvectors of the matrix polynomial. Numerical examples are given to illustrate the efficiency of our approach.

  7. Arbitrary eigenvalue assignments for linear time-varying multivariable control systems

    NASA Technical Reports Server (NTRS)

    Nguyen, Charles C.

    1987-01-01

    The problem of eigenvalue assignments for a class of linear time-varying multivariable systems is considered. Using matrix operators and canonical transformations, it is shown that a time-varying system that is 'lexicography-fixedly controllable' can be made via state feedback to be equivalent to a time-invariant system whose eigenvalues are arbitrarily assignable. A simple algorithm for the design of the state feedback is provided.

  8. Special Aspects in Designing High - Frequency Betatron

    NASA Astrophysics Data System (ADS)

    Filimonov, A. A.; Kasyanov, S. V.; Kasyanov, V. A.

    2016-01-01

    The article is devoted to designing the high - frequency betatron. In high - frequency betatron most important problem is overheating of the elements of the body radiator unit. In an article some directions of solving this problem are shown.

  9. Context in an Interdisciplinary Algebra Writing Assignment

    ERIC Educational Resources Information Center

    Staats, Susan; Batteen, Chris

    2009-01-01

    Teaching mathematics in real-word contexts is a strategy to make math relevant for undergraduate students. However, very little research exists on students' methods of integrating contextual and mathematical knowledge through writing. This study uses an interdisciplinary writing assignment to investigate the relationship between students' written…

  10. 7 CFR 1430.218 - Assignments.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 10 2011-01-01 2011-01-01 false Assignments. 1430.218 Section 1430.218 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS DAIRY PRODUCTS Milk Income Loss Contract Program §...

  11. Nursing Students Respond to a Computer Assignment.

    ERIC Educational Resources Information Center

    Stamler, Lynnette Leeseberg; Thomas, Barbara; McMahon, Sharon

    1999-01-01

    Nursing students learned to send e-mail, use discussion lists, search the Internet, and critique Web sites while completing an assignment. Evaluation by 44 of 56 students showed they increased their computer literacy; most thought the skills were more relevant to their education than to their future practice. (SK)

  12. On Online Assignments in a Calculus Class

    ERIC Educational Resources Information Center

    Jungic, Veselin; Kent, Deborah; Menz, Petra

    2012-01-01

    In this paper, we describe our experience with the creation and utilization of online assignments for several calculus classes at Simon Fraser University (SFU). We present our findings regarding available software by considering the needs and perspectives of the instructors, students, and administrators. We provide a list of questions that guide…

  13. A Literature Assignment with a Civic Emphasis.

    ERIC Educational Resources Information Center

    Brough, Barbara L.

    1989-01-01

    Describes how students wrestled with an assignment that asked them to name their heroes or heroines, compare them to "Beowulf," and defend their choices in writing and class discussion. Tells how students gained insight into their community and the ways in which people make it better. (MG)

  14. Assigning Publication Credit in Collaborative Research.

    ERIC Educational Resources Information Center

    Bridgwater, Carol Austin; And Others

    Publication credit has taken on great significance with the advent of an increasingly competitive academic job market and the decline in federal funds for psychological research. Policies regarding assignment of publication credit help to mold the careers of academic psychologists. A sample of psychologists was asked to endorse what they…

  15. A Hierarchy of Russian Writing Assignments.

    ERIC Educational Resources Information Center

    Rosengramt, Sandra F.

    1985-01-01

    Examines the implications of the ACTFL Provisional Proficiency Guidelines for the writing curriculum. Argues that the functions identified in the guidelines should be practices in writing as well as in speech. Discusses error correction techniques and presents examples of writing assignments in Russian that elicit advanced-level functions. (SED)

  16. 7 CFR 1450.9 - Assignments.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 10 2014-01-01 2014-01-01 false Assignments. 1450.9 Section 1450.9 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS BIOMASS CROP ASSISTANCE PROGRAM (BCAP) Common...

  17. 7 CFR 1450.9 - Assignments.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 10 2012-01-01 2012-01-01 false Assignments. 1450.9 Section 1450.9 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS BIOMASS CROP ASSISTANCE PROGRAM (BCAP) Common...

  18. 7 CFR 1450.9 - Assignments.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 10 2013-01-01 2013-01-01 false Assignments. 1450.9 Section 1450.9 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS BIOMASS CROP ASSISTANCE PROGRAM (BCAP) Common...

  19. 7 CFR 1450.9 - Assignments.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 10 2011-01-01 2011-01-01 false Assignments. 1450.9 Section 1450.9 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS BIOMASS CROP ASSISTANCE PROGRAM (BCAP) Common...

  20. School Assignment, School Choice and Social Mobility

    ERIC Educational Resources Information Center

    Burgess, Simon; Briggs, Adam

    2010-01-01

    We estimate the chances of poor and non-poor children getting places in good schools, analysing the relationship between poverty, location and school assignment. Our dataset allows us to measure location and distance very precisely. The simple unconditional difference in probabilities of attending a good school is substantial. We run an analysis…

  1. Politics, Internet Assignments, and Civic Knowledge.

    ERIC Educational Resources Information Center

    May, Vaughn

    2000-01-01

    Describes how one professor of American government fights the apathy and cynicism of college students toward politics by using the Internet to help students more fairly appraise the workings of the American political system. One assignment has students research and manage a particular public policy initiative through visits to Web sites…

  2. Assigning Grammatical Gender during Word Production

    ERIC Educational Resources Information Center

    Holmes, Virginia M.; Segui, Juan

    2006-01-01

    The present study was designed to examine the processes by which grammatical gender is assigned during word production. French words varied in strength of sublexical cues, based on whether the word ending was typical for one gender rather than neutral about gender, and lexical cues, derived from the associated definite article being uninformative…

  3. A Photographic Assignment for Abstract Algebra

    ERIC Educational Resources Information Center

    Warrington, Gregory S.

    2009-01-01

    We describe a simple photographic assignment appropriate for an abstract algebra (or other) course. Students take digital pictures around campus of various examples of symmetry. They then classify these pictures according to which of the 17 plane symmetry groups they belong. (Contains 2 figures.)

  4. Modelling Focused Learning in Role Assignment.

    ERIC Educational Resources Information Center

    Matessa, Michael; Anderson, John R.

    2000-01-01

    ACT-R is a theory of cognition that is capable of learning the relative usefulness of alternative rules. A model using this implicit procedural learning mechanism is described that explains results from a concept formation task created by McDonald and MacWhinney (1991), a role assignment created by Blackwell (1995), and a new role assignment…

  5. Democratization of Learning through Thematic Assignment

    ERIC Educational Resources Information Center

    Medellu, Christophil S.; Lumingkewas, S.; Walangitan, J. F.

    2015-01-01

    This article describes the results of research on learning democratization in Sangihe. This study is the first year of a five-year plan. Long-term goal of this research is to create the democratic science learning in schools. Democratic learning model was developed through thematic assignment, involving the participation of parents and…

  6. 24 CFR 221.770 - Assignment option.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... DEVELOPMENT MORTGAGE AND LOAN INSURANCE PROGRAMS UNDER NATIONAL HOUSING ACT AND OTHER AUTHORITIES LOW COST AND... 24 Housing and Urban Development 2 2011-04-01 2011-04-01 false Assignment option. 221.770 Section 221.770 Housing and Urban Development Regulations Relating to Housing and Urban Development...

  7. 24 CFR 221.255 - Assignment option.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... DEVELOPMENT MORTGAGE AND LOAN INSURANCE PROGRAMS UNDER NATIONAL HOUSING ACT AND OTHER AUTHORITIES LOW COST AND MODERATE INCOME MORTGAGE INSURANCE-SAVINGS CLAUSE Contract Rights and Obligations-Low Cost Homes § 221.255... 24 Housing and Urban Development 2 2011-04-01 2011-04-01 false Assignment option. 221.255...

  8. 24 CFR 221.770 - Assignment option.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... DEVELOPMENT MORTGAGE AND LOAN INSURANCE PROGRAMS UNDER NATIONAL HOUSING ACT AND OTHER AUTHORITIES LOW COST AND... 24 Housing and Urban Development 2 2010-04-01 2010-04-01 false Assignment option. 221.770 Section 221.770 Housing and Urban Development Regulations Relating to Housing and Urban Development...

  9. 24 CFR 221.255 - Assignment option.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... DEVELOPMENT MORTGAGE AND LOAN INSURANCE PROGRAMS UNDER NATIONAL HOUSING ACT AND OTHER AUTHORITIES LOW COST AND MODERATE INCOME MORTGAGE INSURANCE-SAVINGS CLAUSE Contract Rights and Obligations-Low Cost Homes § 221.255... 24 Housing and Urban Development 2 2010-04-01 2010-04-01 false Assignment option. 221.255...

  10. 20 CFR 61.404 - Assignments; creditors.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Assignments; creditors. 61.404 Section 61.404 Employees' Benefits OFFICE OF WORKERS' COMPENSATION PROGRAMS, DEPARTMENT OF LABOR COMPENSATION FOR INJURY, DISABILITY, DEATH, OR ENEMY DETENTION OF EMPLOYEES OF CONTRACTORS WITH THE UNITED STATES CLAIMS...

  11. Teaching Historical Analysis through Creative Writing Assignments

    ERIC Educational Resources Information Center

    Peterson, Janine Larmon; Graham, Lea

    2015-01-01

    Incorporating creative writing exercises in history courses can heighten students' critical reading and analytical skills in an active learning model. We identify and define two types of possible assignments that use model texts as their locus: centripetal, which focuses on specific context and disciplinary terms, and centrifugal, which address…

  12. Payload flight assignments: NASA mixed fleet

    NASA Technical Reports Server (NTRS)

    Starkey, Norman

    1993-01-01

    This mixed fleet manifest, which serves as the baseline for planning purposes, includes payload flight assignments for the Space Shuttle through FY 1995 and NASA expendable launch vehicle (EVL) missions through FY 1999. The FY 1996-1999 Shuttle manifest planning is omitted pending Space Station redesign. Also included in this document are a list of previous flights, payload requests, and payload/acronyms.

  13. Writing Assignments Based on Literary Works.

    ERIC Educational Resources Information Center

    Matthews, Dorothy, Ed.

    1985-01-01

    The literature selections serving as the basis for writing assignments in the articles in this journal issue range from time-honored English classics ("Beowulf,""Sir Gawain and the Green Knight") and American standards ("A Farewell to Arms,""The Scarlet Letter") to contemporary fiction. The articles deal with works by women writers (Shirley…

  14. 44 CFR 295.14 - Assignments.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 44 Emergency Management and Assistance 1 2011-10-01 2011-10-01 false Assignments. 295.14 Section 295.14 Emergency Management and Assistance FEDERAL EMERGENCY MANAGEMENT AGENCY, DEPARTMENT OF HOMELAND SECURITY CERRO GRANDE FIRE ASSISTANCE CERRO GRANDE FIRE ASSISTANCE Bringing a Claim Under the CGFAA §...

  15. 44 CFR 295.14 - Assignments.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 44 Emergency Management and Assistance 1 2010-10-01 2010-10-01 false Assignments. 295.14 Section 295.14 Emergency Management and Assistance FEDERAL EMERGENCY MANAGEMENT AGENCY, DEPARTMENT OF HOMELAND SECURITY CERRO GRANDE FIRE ASSISTANCE CERRO GRANDE FIRE ASSISTANCE Bringing a Claim Under the CGFAA §...

  16. 7 CFR 1430.218 - Assignments.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 10 2013-01-01 2013-01-01 false Assignments. 1430.218 Section 1430.218 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS DAIRY PRODUCTS Milk Income Loss Contract Program §...

  17. 7 CFR 1430.218 - Assignments.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 10 2012-01-01 2012-01-01 false Assignments. 1430.218 Section 1430.218 Agriculture Regulations of the Department of Agriculture (Continued) COMMODITY CREDIT CORPORATION, DEPARTMENT OF AGRICULTURE LOANS, PURCHASES, AND OTHER OPERATIONS DAIRY PRODUCTS Milk Income Loss Contract Program §...

  18. Repeatable Writing Assignments to Enhance Student Writing.

    ERIC Educational Resources Information Center

    Wiebold, W. J.; And Others

    1990-01-01

    Discussed is the use of two short writing assignments and a peer review system in an undergraduate agronomy course to improve writing skills and the learning of agronomic principles. Provided is a course description and procedures used in the course. Student evaluation in the course is reviewed. (CW)

  19. Assignment Of Finite Elements To Parallel Processors

    NASA Technical Reports Server (NTRS)

    Salama, Moktar A.; Flower, Jon W.; Otto, Steve W.

    1990-01-01

    Elements assigned approximately optimally to subdomains. Mapping algorithm based on simulated-annealing concept used to minimize approximate time required to perform finite-element computation on hypercube computer or other network of parallel data processors. Mapping algorithm needed when shape of domain complicated or otherwise not obvious what allocation of elements to subdomains minimizes cost of computation.

  20. 33 CFR 20.201 - Assignment.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Assignment. 20.201 Section 20.201 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY GENERAL RULES OF PRACTICE, PROCEDURE, AND EVIDENCE FOR FORMAL ADMINISTRATIVE PROCEEDINGS OF THE COAST GUARD Administrative Law...

  1. Avoid programmable controller problems

    SciTech Connect

    DeVries, E.A.

    1983-06-01

    This article illustrates good hardware installation practices and careful software documentation to help minimize PC problems and aid troubleshooting. Presents a typical ladder diagram, a binary logic diagram, a typical computer generated cross-reference list, an assignment list, and a cross-reference sheet.

  2. Combat exposure and migraine headache: evidence from exogenous deployment assignment.

    PubMed

    Cesur, Resul; Sabia, Joseph J; Tekin, Erdal

    2015-01-01

    Migraine headache is a growing problem for U.S. servicemembers deployed to Iraq and Afghanistan and has been linked to substantial negative socioeconomic consequences. However, there has been no comprehensive examination of the relationship between combat exposure and migraine headache or its stress-related triggers. Analyzing data drawn from the National Longitudinal Study of Adolescent Health, we use exogenous variation in deployment assignment to estimate the effect of combat exposure on migraine headache. We find that those deployed to a combat zone with enemy firefight are at substantially increased risk for migraine headache relative to those deployed to non-combat zones outside the United States or to combat zones without enemy firefight. We find that combat-induced sleep disorders, stress-related psychological problems, and physical injuries in combat explain approximately 40-45 percent of the relationship between combat exposure and migraine headache.

  3. Combat exposure and migraine headache: evidence from exogenous deployment assignment.

    PubMed

    Cesur, Resul; Sabia, Joseph J; Tekin, Erdal

    2015-01-01

    Migraine headache is a growing problem for U.S. servicemembers deployed to Iraq and Afghanistan and has been linked to substantial negative socioeconomic consequences. However, there has been no comprehensive examination of the relationship between combat exposure and migraine headache or its stress-related triggers. Analyzing data drawn from the National Longitudinal Study of Adolescent Health, we use exogenous variation in deployment assignment to estimate the effect of combat exposure on migraine headache. We find that those deployed to a combat zone with enemy firefight are at substantially increased risk for migraine headache relative to those deployed to non-combat zones outside the United States or to combat zones without enemy firefight. We find that combat-induced sleep disorders, stress-related psychological problems, and physical injuries in combat explain approximately 40-45 percent of the relationship between combat exposure and migraine headache. PMID:24560382

  4. Problems on Divisibility of Binomial Coefficients

    ERIC Educational Resources Information Center

    Osler, Thomas J.; Smoak, James

    2004-01-01

    Twelve unusual problems involving divisibility of the binomial coefficients are represented in this article. The problems are listed in "The Problems" section. All twelve problems have short solutions which are listed in "The Solutions" section. These problems could be assigned to students in any course in which the binomial theorem and Pascal's…

  5. 47 CFR 80.387 - Frequencies for Alaska fixed stations.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Frequencies for Alaska fixed stations. 80.387... SERVICES STATIONS IN THE MARITIME SERVICES Frequencies Alaska Fixed Stations § 80.387 Frequencies for Alaska fixed stations. (a) The carrier frequencies listed in (b) of this section are assignable for...

  6. 47 CFR 80.387 - Frequencies for Alaska fixed stations.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 5 2013-10-01 2013-10-01 false Frequencies for Alaska fixed stations. 80.387... SERVICES STATIONS IN THE MARITIME SERVICES Frequencies Alaska Fixed Stations § 80.387 Frequencies for Alaska fixed stations. (a) The carrier frequencies listed in (b) of this section are assignable for...

  7. 47 CFR 80.387 - Frequencies for Alaska fixed stations.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Frequencies for Alaska fixed stations. 80.387... SERVICES STATIONS IN THE MARITIME SERVICES Frequencies Alaska Fixed Stations § 80.387 Frequencies for Alaska fixed stations. (a) The carrier frequencies listed in (b) of this section are assignable for...

  8. 47 CFR 80.387 - Frequencies for Alaska fixed stations.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Frequencies for Alaska fixed stations. 80.387... SERVICES STATIONS IN THE MARITIME SERVICES Frequencies Alaska Fixed Stations § 80.387 Frequencies for Alaska fixed stations. (a) The carrier frequencies listed in (b) of this section are assignable for...

  9. 47 CFR 80.377 - Frequencies for ship earth stations.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 5 2013-10-01 2013-10-01 false Frequencies for ship earth stations. 80.377... SERVICES STATIONS IN THE MARITIME SERVICES Frequencies Ship Earth Stations § 80.377 Frequencies for ship earth stations. The frequency band 1626.5-1645.5 MHz is assignable for communication operations...

  10. 47 CFR 80.377 - Frequencies for ship earth stations.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 5 2011-10-01 2011-10-01 false Frequencies for ship earth stations. 80.377... SERVICES STATIONS IN THE MARITIME SERVICES Frequencies Ship Earth Stations § 80.377 Frequencies for ship earth stations. The frequency band 1626.5-1645.5 MHz is assignable for communication,...

  11. 47 CFR 80.377 - Frequencies for ship earth stations.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 5 2014-10-01 2014-10-01 false Frequencies for ship earth stations. 80.377... SERVICES STATIONS IN THE MARITIME SERVICES Frequencies Ship Earth Stations § 80.377 Frequencies for ship earth stations. The frequency band 1626.5-1645.5 MHz is assignable for communication operations...

  12. 47 CFR 80.377 - Frequencies for ship earth stations.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Frequencies for ship earth stations. 80.377... SERVICES STATIONS IN THE MARITIME SERVICES Frequencies Ship Earth Stations § 80.377 Frequencies for ship earth stations. The frequency band 1626.5-1645.5 MHz is assignable for communication,...

  13. 47 CFR 80.377 - Frequencies for ship earth stations.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 5 2010-10-01 2010-10-01 false Frequencies for ship earth stations. 80.377... SERVICES STATIONS IN THE MARITIME SERVICES Frequencies Ship Earth Stations § 80.377 Frequencies for ship earth stations. The frequency band 1626.5-1645.5 MHz is assignable for communication,...

  14. 47 CFR 80.363 - Frequencies for facsimile.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 5 2012-10-01 2012-10-01 false Frequencies for facsimile. 80.363 Section 80... STATIONS IN THE MARITIME SERVICES Frequencies Radiotelegraphy § 80.363 Frequencies for facsimile. (a) The non-paired frequencies with F1C, F3C, J2C or J3C emission which are assignable to ship and...

  15. Design of multivariable feedback control systems via spectral assignment. [as applied to aircraft flight control

    NASA Technical Reports Server (NTRS)

    Liberty, S. R.; Mielke, R. R.; Tung, L. J.

    1981-01-01

    Applied research in the area of spectral assignment in multivariable systems is reported. A frequency domain technique for determining the set of all stabilizing controllers for a single feedback loop multivariable system is described. It is shown that decoupling and tracking are achievable using this procedure. The technique is illustrated with a simple example.

  16. Assigning cause for sudden unexpected infant death.

    PubMed

    Hunt, Carl E; Darnall, Robert A; McEntire, Betty L; Hyma, Bruce A

    2015-06-01

    We have reached a conundrum in assigning cause of death for sudden unexpected infant deaths. We summarize the discordant perspectives and approaches and how they have occurred, and recommend a pathway toward improved consistency. This lack of consistency affects pediatricians and other health care professionals, scientific investigators, medical examiners and coroners, law enforcement agencies, families, and support or advocacy groups. We recommend that an interdisciplinary international committee be organized to review current approaches for assigning cause of death, and to identify a consensus strategy for improving consistency. This effort will need to encompass intrinsic risk factors or infant vulnerability in addition to known environmental risk factors including unsafe sleep settings, and must be sufficiently flexible to accommodate a progressively expanding knowledge base. PMID:25634430

  17. 47 CFR 87.323 - Frequencies.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES AVIATION SERVICES Aviation Support Stations § 87.323 Frequencies. (a) 121.500 MHz: Emergency and distress only. (b) The frequencies 121.950, 123.300 and 123.500 MHz are available for assignment to aviation support stations...

  18. 47 CFR 87.323 - Frequencies.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES AVIATION SERVICES Aviation Support Stations § 87.323 Frequencies. (a) 121.500 MHz: Emergency and distress only. (b) The frequencies 121.950, 123.300 and 123.500 MHz are available for assignment to aviation support stations...

  19. 38 CFR 19.3 - Assignment of proceedings.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 2 2010-07-01 2010-07-01 false Assignment of proceedings... Assignment of proceedings. (a) Assignment. The Chairman may assign a proceeding instituted before the Board, including any motion, to an individual Member or to a panel of three or more Members for adjudication...

  20. 48 CFR 1552.211-74 - Work assignments.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 48 Federal Acquisition Regulations System 6 2011-10-01 2011-10-01 false Work assignments. 1552.211... Work assignments. As prescribed in 1511.011-74, insert the following contract clause in cost-reimbursement type term form contracts when work assignments are to be used. Work Assignments (APR 1984) (a)...