WorldWideScience

Sample records for assignments

  1. Polynomial Assignments

    OpenAIRE

    Guillemin, Victor; Sabatini, Silvia; Zara, Catalin

    2013-01-01

    The concept of assignments was introduced in [GGK99] as a method for extracting geometric information about group actions on manifolds from combinatorial data encoded in the infinitesimal orbit-type stratification. In this paper we will answer in the affirmative a question posed in [GGK99] by showing that the equivariant cohomology ring of $M$ is to a large extent determined by this data.

  2. BTEC Integrative Assignments.

    Science.gov (United States)

    Foot, G. E.

    1992-01-01

    To equip electrical engineering students with common and transferable work skills, a program of integrative assignments was created to develop communication and teamwork skills. Discusses assignment components; the log book, a personal account of each assignment; assessment; conversion of "common skills" to competence statements, and performance…

  3. Analyzing Tenant Assignment Policies

    OpenAIRE

    Kaplan, Edward H.

    1987-01-01

    This paper discusses two popular policies used by housing authorities to assign applicants to housing projects: first available unit and priority assignment policies. The policies are compared according to their abilities to integrate housing projects, applicant assignment probabilities, and mean waiting times. Our results show that priority policies can successfully integrate public housing projects while first available unit policies can exacerbate segregation. These results support the rep...

  4. Historical WBAN ID Assignments

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — 4"x6" index cards represent the first written assignments of Weather Bureau Army Navy (WBAN) station identifier numbers by the National Climatic Data Center....

  5. My Favorite Assignment.

    Science.gov (United States)

    Hebert, Margaret; And Others

    1991-01-01

    Contains seven brief articles which offer assignments designed to help students perform job searches, write job application letters, answer difficult questions, write letters of resignation, alleviate fears of public speaking, use the interview effectively in the business communication, and develop listening skills. (PRA)

  6. Interactive Assignments for Online Students

    Directory of Open Access Journals (Sweden)

    Pam Lowry

    2009-04-01

    Full Text Available Students can experience first hand through interactive assignments what is involved in teaching an online course. Most students develop a whole new appreciation for the student learning process. Faculty are beginning to realize that online instruction is more than a series of readings posted to a course management system. This paper summarizes the faculty member's instructional strategies involved when creating student interaction assignments. The paper also summarizes the assignments, discussion board, and trends in education from the student's perspective. In summary, it concludes with the faculty's overall perspective concerning these assignments and how the assignments could be more effective for the student.

  7. Balanced input-output assignment

    Science.gov (United States)

    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.

  8. 76 FR 55880 - Recording Assignments

    Science.gov (United States)

    2011-09-09

    ..., depending on the date they were recorded. The public may also search patent and trademark assignment... United States Patent and Trademark Office Recording Assignments ACTION: Proposed collection; comment request. SUMMARY: The United States Patent and Trademark Office (USPTO), as part of its continuing...

  9. Job Assignment with Multivariate Skills

    OpenAIRE

    Brilon, Stefanie

    2010-01-01

    This paper analyzes the job assignment problem faced by a firm when workers' skills are distributed along several dimensions and jobs require different skills to varying extent. I derive optimal assignment rules with and without slot constraints, and show that under certain circumstances workers may get promoted although in their new job they are expected to be less productive than in their old job. This can be interpreted as a version of the Peter Principle which states that workers get prom...

  10. Who Benefits from Homework Assignments?

    Science.gov (United States)

    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. Assigning agents to a line

    DEFF Research Database (Denmark)

    Hougaard, Jens Leth; Moreno-Ternero, Juan D.; Østerdal, Lars Peter Raahave

    2014-01-01

    minimizing modification of the classic random priority method to solve this class of problems. We also provide some logical relations in our setting among standard axioms in the literature on assignment problems, and explore the robustness of our results to several extensions of our setting....

  12. Probabilistic analysis of power assignments

    NARCIS (Netherlands)

    Graaf, de Maurits; Manthey, Bodo

    2014-01-01

    A fundamental problem for wireless ad hoc networks is the assignment of suitable transmission powers to the wireless devices such that the resulting communication graph is connected. The goal is to minimize the total transmit power in order to maximize the life-time of the network. Our aim is a prob

  13. Fleet Assignment Using Collective Intelligence

    Science.gov (United States)

    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).

  14. Who benefits from homework assignments?

    OpenAIRE

    Rønning, Marte

    2008-01-01

    Abstract: Using Dutch data on pupils in elementary school this paper is the first empirical study that analyzes whether assigning homework has an heterogeneous impact on pupil achievement. Addressing potential biases that arise from unobserved school quality, pupil selection by exploiting different methods, I find that the test score gap is larger in classes where everybody gets homework than in classes where nobody gets homework. More precisely pupils belonging to the upper part of the so...

  15. Relevant Explanations: Allowing Disjunctive Assignments

    OpenAIRE

    Shimony, Solomon Eyal

    2013-01-01

    Relevance-based explanation is a scheme in which partial assignments to Bayesian belief network variables are explanations (abductive conclusions). We allow variables to remain unassigned in explanations as long as they are irrelevant to the explanation, where irrelevance is defined in terms of statistical independence. When multiple-valued variables exist in the system, especially when subsets of values correspond to natural types of events, the over specification problem, alleviated by inde...

  16. A Statistical Programme Assignment Model

    DEFF Research Database (Denmark)

    Rosholm, Michael; Staghøj, Jonas; Svarer, Michael

    When treatment effects of active labour market programmes are heterogeneous in an observable way  across the population, the allocation of the unemployed into different programmes becomes a particularly  important issue. In this paper, we present a statistical model designed to improve the present...... duration of unemployment spells may result if a statistical programme assignment model is introduced. We discuss several issues regarding the  plementation of such a system, especially the interplay between the statistical model and  case workers....

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

    Science.gov (United States)

    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…

  18. 7 CFR 1437.104 - Assigned production.

    Science.gov (United States)

    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...

  19. Lexical Stress Assignment in Italian Developmental Dyslexia

    Science.gov (United States)

    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.…

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

    Science.gov (United States)

    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…

  1. The Mechanism Design Approach to Student Assignment

    OpenAIRE

    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 some of this recent literature, highlighting how issues from the field motivated theoretical developments and emphasizing how the dialogue may be a...

  2. Job Assignments, Intrinsic Motivation and Explicit Incentives

    OpenAIRE

    Nafziger, Julia

    2008-01-01

    This paper considers the interplay of job assignments with the intrinsic and extrinsic motivation of an agent. Job assignments influence the self confidence of the agent, and thereby his intrinsic motivation. Monetary reward allow the principal to complement intrinsic motivation with extrinsic incentives. The main result is that the principal chooses an inefficient job assignment rule to enhance the agent's intrinsic motivation even though she can motivate him with monetary rewards. This show...

  3. Assigning proctors to exams with scatter search

    OpenAIRE

    Ramalhinho-Louren??o, Helena; Mart??, Rafael; Laguna, Manuel

    2001-01-01

    In this paper we present an algorithm to assign proctors to exams. This NP-hard problem is related to the generalized assignment problem with multiple objectives. The problem consists of assigning teaching assistants to proctor final exams at a university. We formulate this problem as a multiobjective integer program (IP) with a preference function and a workload-fairness function. We then consider also a weighted objective that combines both functions. We develop a scatter ...

  4. Detecting Plagiarism in MS Access Assignments

    Science.gov (United States)

    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…

  5. 12 CFR 25.28 - Assigned ratings.

    Science.gov (United States)

    2010-01-01

    ... DEPOSIT PRODUCTION REGULATIONS Regulations Standards for Assessing Performance § 25.28 Assigned ratings... a rating of “outstanding,” “satisfactory,” “needs to improve,” or “substantial noncompliance” based... 12 Banks and Banking 1 2010-01-01 2010-01-01 false Assigned ratings. 25.28 Section 25.28 Banks...

  6. Online Discussion Assignments Improve Students' Class Preparation

    Science.gov (United States)

    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…

  7. Protein secondary structure: category assignment and predictability

    DEFF Research Database (Denmark)

    Andersen, Claus A.; Bohr, Henrik; Brunak, Søren

    2001-01-01

    structures. Single sequence prediction of the new three category assignment gives an overall prediction improvement of 3.1% and 5.1%, compared to the DSSP assignment and schemes where the helix category consists of a-helix and 3(10)-helix, respectively. These results were achieved using a standard feed...

  8. Stress Assignment in Reading Italian Polysyllabic Pseudowords

    Science.gov (United States)

    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…

  9. Individualized Assignments in an Experimental Psychology Course.

    Science.gov (United States)

    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)

  10. Airport Gate Assignment: New Model and Implementation

    CERN Document Server

    Li, Chendong

    2008-01-01

    Airport gate assignment is of great importance in airport operations. In this paper, we study the Airport Gate Assignment Problem (AGAP), propose a new model and implement the model with Optimization Programming language (OPL). With the objective to minimize the number of conflicts of any two adjacent aircrafts assigned to the same gate, we build a mathematical model with logical constraints and the binary constraints, which can provide an efficient evaluation criterion for the Airlines to estimate the current gate assignment. To illustrate the feasibility of the model we construct experiments with the data obtained from Continental Airlines, Houston Gorge Bush Intercontinental Airport IAH, which indicate that our model is both energetic and effective. Moreover, we interpret experimental results, which further demonstrate that our proposed model can provide a powerful tool for airline companies to estimate the efficiency of their current work of gate assignment.

  11. Academic Peer Effects with Different Group Assignment Policies : Residential Tracking versus Random Assignment

    OpenAIRE

    Garlick, Robert

    2014-01-01

    This paper studies the relative academic performance of students tracked or randomly assigned to South African university dormitories. Tracked or streamed assignment creates dormitories where all students obtained similar scores on high school graduation examinations. Random assignment creates dormitories that are approximately representative of the population of students. Tracking lowers ...

  12. Reading assignment 10 - Linguistics 8806 (group 3)

    OpenAIRE

    Muñoz Baell, Irma María

    2010-01-01

    Reading assignment 10 - PART II. AN INTRODUCTION TO THE HISTORY OF LINGUISTICS. Key topic: Nineteenth-century linguistics: Historical linguistics. Academic year 2009-2010 (Course credits: 12 (15 ECTS)).

  13. Quantum probability assignment limited by relativistic causality.

    Science.gov (United States)

    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

  14. Diagnosis code assignment: models and evaluation metrics

    OpenAIRE

    Perotte, Adler; Pivovarov, Rimma; Natarajan, Karthik; Weiskopf, Nicole; Wood, Frank; Elhadad, Noémie

    2013-01-01

    Background and objective The volume of healthcare data is growing rapidly with the adoption of health information technology. We focus on automated ICD9 code assignment from discharge summary content and methods for evaluating such assignments. Methods We study ICD9 diagnosis codes and discharge summaries from the publicly available Multiparameter Intelligent Monitoring in Intensive Care II (MIMIC II) repository. We experiment with two coding approaches: one that treats each ICD9 code indepen...

  15. On pole structure assignment in linear systems

    Czech Academy of Sciences Publication Activity Database

    Loiseau, J.-J.; Zagalak, Petr

    2009-01-01

    Roč. 82, č. 7 (2009), s. 1179-1192. ISSN 0020-7179 R&D Projects: GA ČR(CZ) GA102/07/1596 Institutional research plan: CEZ:AV0Z10750506 Keywords : linear systems * linear state feedback * pole structure assignment Subject RIV: BC - Control Systems Theory Impact factor: 1.124, year: 2009 http://library.utia.cas.cz/separaty/2009/AS/zagalak-on pole structure assignment in linear systems.pdf

  16. Competitive Traffic Assignment in Road Networks

    Directory of Open Access Journals (Sweden)

    Krylatov Alexander Y.

    2016-09-01

    Full Text Available Recently in-vehicle route guidance and information systems are rapidly developing. Such systems are expected to reduce congestion in an urban traffic area. This social benefit is believed to be reached by imposing the route choices on the network users that lead to the system optimum traffic assignment. However, guidance service could be offered by different competitive business companies. Then route choices of different mutually independent groups of users may reject traffic assignment from the system optimum state. In this paper, a game theoretic approach is shown to be very efficient to formalize competitive traffic assignment problem with various groups of users in the form of non-cooperative network game with the Nash equilibrium search. The relationships between the Wardrop’s system optimum associated with the traffic assignment problem and the Nash equilibrium associated with the competitive traffic assignment problem are investigated. Moreover, some related aspects of the Nash equilibrium and the Wardrop’s user equilibrium assignments are also discussed.

  17. Flexible taxonomic assignment of ambiguous sequencing reads

    Directory of Open Access Journals (Sweden)

    Jansson Jesper

    2011-01-01

    Full Text Available Abstract Background To characterize the diversity of bacterial populations in metagenomic studies, sequencing reads need to be accurately assigned to taxonomic units in a given reference taxonomy. Reads that cannot be reliably assigned to a unique leaf in the taxonomy (ambiguous reads are typically assigned to the lowest common ancestor of the set of species that match it. This introduces a potentially severe error in the estimation of bacteria present in the sample due to false positives, since all species in the subtree rooted at the ancestor are implicitly assigned to the read even though many of them may not match it. Results We present a method that maps each read to a node in the taxonomy that minimizes a penalty score while balancing the relevance of precision and recall in the assignment through a parameter q. This mapping can be obtained in time linear in the number of matching sequences, because LCA queries to the reference taxonomy take constant time. When applied to six different metagenomic datasets, our algorithm produces different taxonomic distributions depending on whether coverage or precision is maximized. Including information on the quality of the reads reduces the number of unassigned reads but increases the number of ambiguous reads, stressing the relevance of our method. Finally, two measures of performance are described and results with a set of artificially generated datasets are discussed. Conclusions The assignment strategy of sequencing reads introduced in this paper is a versatile and a quick method to study bacterial communities. The bacterial composition of the analyzed samples can vary significantly depending on how ambiguous reads are assigned depending on the value of the q parameter. Validation of our results in an artificial dataset confirm that a combination of values of q produces the most accurate results.

  18. Protein secondary structure assignment revisited: a detailed analysis of different assignment methods

    Directory of Open Access Journals (Sweden)

    de Brevern Alexandre G

    2005-09-01

    Full Text Available Abstract Background A number of methods are now available to perform automatic assignment of periodic secondary structures from atomic coordinates, based on different characteristics of the secondary structures. In general these methods exhibit a broad consensus as to the location of most helix and strand core segments in protein structures. However the termini of the segments are often ill-defined and it is difficult to decide unambiguously which residues at the edge of the segments have to be included. In addition, there is a "twilight zone" where secondary structure segments depart significantly from the idealized models of Pauling and Corey. For these segments, one has to decide whether the observed structural variations are merely distorsions or whether they constitute a break in the secondary structure. Methods To address these problems, we have developed a method for secondary structure assignment, called KAKSI. Assignments made by KAKSI are compared with assignments given by DSSP, STRIDE, XTLSSTR, PSEA and SECSTR, as well as secondary structures found in PDB files, on 4 datasets (X-ray structures with different resolution range, NMR structures. Results A detailed comparison of KAKSI assignments with those of STRIDE and PSEA reveals that KAKSI assigns slightly longer helices and strands than STRIDE in case of one-to-one correspondence between the segments. However, KAKSI tends also to favor the assignment of several short helices when STRIDE and PSEA assign longer, kinked, helices. Helices assigned by KAKSI have geometrical characteristics close to those described in the PDB. They are more linear than helices assigned by other methods. The same tendency to split long segments is observed for strands, although less systematically. We present a number of cases of secondary structure assignments that illustrate this behavior. Conclusion Our method provides valuable assignments which favor the regularity of secondary structure segments.

  19. Unifying Temporal and Structural Credit Assignment Problems

    Science.gov (United States)

    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.

  20. Writing Assignments that Promote Active Learning

    Science.gov (United States)

    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.

  1. Radio labeling with pre-assigned frequencies

    OpenAIRE

    Bodlaender, H.L.; Broersma, H.J.; Fomin, F.V.; Pyatkin, A.V.; Woeginer, G.J.

    2007-01-01

    A radio labeling of a graph G is an assignment of pairwise distinct, positive integer labels to the vertices of G such that labels of adjacent vertices differ by at least 2. The radio labeling problem (RL) consists in determining a radio labeling that minimizes the maximum label that is used (the so-called span of the labeling). RL is a well-studied problem, mainly motivated by frequency assignment problems in which transmitters are not allowed to operate on the same frequency channel. We con...

  2. Radio labeling with pre-assigned frequencies

    OpenAIRE

    Bodlaender, H.L.; Broersma, H.J.; Fomin, F.V.; Pyatkin, A.V.; Woeginger, G.J.

    2002-01-01

    A radio labeling of a graph $G$ is an assignment of pairwise distinct, positive integer labels to the vertices of $G$ such that labels of adjacent vertices differ by at least $2$. The radio labeling problem (\\mbox{\\sc RL}) consists in determining a radio labeling that minimizes the maximum label that is used (the so-called span of the labeling). \\mbox{\\sc RL} is a well-studied problem, mainly motivated by frequency assignment problems in which transmitters are not allowed to operate on the sa...

  3. Evolving Networks with Nonlinear Assignment of Weight

    Institute of Scientific and Technical Information of China (English)

    TANG Chao; TANG Yi

    2006-01-01

    We propose a weighted evolving network model in which the underlying topological structure is still driven by the degree according to the preferential attachment rule while the weight assigned to the newly established edges is dependent on the degree in a nonlinear form. By varying the parameter α that controls the function determining the assignment of weight, a wide variety of power-law behaviours of the total weight distributions as well as the diversity of the weight distributions of edges are displayed. Variation of correlation and heterogeneity in the network is illustrated as well.

  4. 75 FR 55352 - Delegation of Authorities and Assignment of Responsibilities

    Science.gov (United States)

    2010-09-10

    ... of the Secretary Delegation of Authorities and Assignment of Responsibilities Secretary's Order 5-2010 Subject: Delegation of Authorities and Assignment of Responsibilities to the Administrator, Wage and Hour Division. 1. Purpose. To delegate authorities and assign responsibilities to...

  5. Tabu search for target-radar assignment

    DEFF Research Database (Denmark)

    Hindsberger, Magnus; Vidal, Rene Victor Valqui

    2000-01-01

    In the paper the problem of assigning air-defense illumination radars to enemy targets is presented. A tabu search metaheuristic solution is described and the results achieved are compared to those of other heuristic approaches, implementation and experimental aspects are discussed. It is argued...... that tabu search could be used in near real-time decision making systems...

  6. Teaching Historical Analysis through Creative Writing Assignments

    Science.gov (United States)

    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…

  7. 24 CFR 221.255 - Assignment option.

    Science.gov (United States)

    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...

  8. 24 CFR 221.770 - Assignment option.

    Science.gov (United States)

    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. Experimental results on quadratic assignment problem

    Directory of Open Access Journals (Sweden)

    N.P. Nikolov

    1999-08-01

    Full Text Available The paper presents experimental results on quadratic assignment problem. The "scanning area" method formulated for radioelectronic equipment design is applied. For all more complex tests ours results are better or coincident with the ones known in literature. Conclusion concerning the effectiveness of method are given.

  10. 12 CFR 345.28 - Assigned ratings.

    Science.gov (United States)

    2010-01-01

    ...,” “satisfactory,” “needs to improve,” or “substantial noncompliance” based on the bank's performance under the... 12 Banks and Banking 4 2010-01-01 2010-01-01 false Assigned ratings. 345.28 Section 345.28 Banks and Banking FEDERAL DEPOSIT INSURANCE CORPORATION REGULATIONS AND STATEMENTS OF GENERAL...

  11. Incentivized optimal advert assignment via utility decomposition

    NARCIS (Netherlands)

    F. Kelly; P. Key; N. Walton

    2014-01-01

    We consider a large-scale Ad-auction where adverts are assigned over a potentially infinite number of searches. We capture the intrinsic asymmetries in information between advertisers, the advert platform and the space of searches: advertisers know and can optimize the average performance of their a

  12. Tabu search for target-radar assignment

    DEFF Research Database (Denmark)

    Hindsberger, Magnus; Vidal, Rene Victor Valqui

    2000-01-01

    In the paper the problem of assigning air-defense illumination radars to enemy targets is presented. A tabu search metaheuristic solution is described and the results achieved are compared to those of other heuristic approaches, implementation and experimental aspects are discussed. It is argued...

  13. Strategy-Proof Assignment Of Multiple Resources

    DEFF Research Database (Denmark)

    Erlanson, Albin; Szwagrzak, Karol

    2015-01-01

    We examine the strategy-proof allocation of multiple resources; an application is the assignment of packages of tasks, workloads, and compensations among the members of an organization. In the domain of multidimensional single-peaked preferences, we find that any allocation mechanism obtained by ......), some of which date back to the Babylonian Talmud....

  14. On Online Assignments in a Calculus Class

    Science.gov (United States)

    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…

  15. Systematic Sorting: Teacher Characteristics and Class Assignments

    Science.gov (United States)

    Kalogrides, Demetra; Loeb, Susanna; Beteille, Tara

    2013-01-01

    Although prior research has documented differences in the distribution of teacher characteristics across schools serving different student populations, few studies have examined the extent to which teacher sorting occurs within schools. This study uses data from one large urban school district and compares the class assignments of teachers who…

  16. Generalised Assignment Matrix Methodology in Linear Programming

    Science.gov (United States)

    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…

  17. Assignment and Correspondence Tracking System - Tactical / Operational Reporting

    Data.gov (United States)

    Social Security Administration — Reporting data store for the Assignment and Correspondence Tracking System (ACT). ACT automates the assignment and tracking of correspondence processing within the...

  18. Weapon Target Assignment with Combinatorial Optimization Techniques

    Directory of Open Access Journals (Sweden)

    Asim Tokgöz

    2013-07-01

    Full Text Available Weapon Target Assignment (WTA is the assignment of friendly weapons to the hostile targets in order to protect friendly assets or destroy the hostile targets and considered as a NP-complete problem. Thus, it is very hard to solve it for real time or near-real time operational needs. In this study, genetic algorithm (GA, tabu search (TS, simulated annealing (SA and Variable Neighborhood Search (VNS combinatorial optimization techniques are applied to the WTA problem and their results are compared with each other and also with the optimized GAMS solutions. Algorithms are tested on the large scale problem instances. It is found that all the algorithms effectively converge to the near global optimum point(s (a good quality and the efficiency of the solutions (speed of solution might be improved according to the operational needs. VNS and SA solution qualities are better than both GA and TS.

  19. Weekly Fleet Assignment Model and Algorithm

    Institute of Scientific and Technical Information of China (English)

    ZHU Xing-hui; ZHU Jin-fu; GONG Zai-wu

    2007-01-01

    A 0-1 integer programming model for weekly fleet assignment was put forward based on linear network and weekly flight scheduling in China. In this model, the objective function is to maximize the total profit of fleet assignment, subject to the constraints of coverage, aircraft flow balance, fleet size, aircraft availability, aircraft usage, flight restriction, aircraft seat capacity,and stopover. Then the branch-and-bound algorithm based on special ordered set was applied to solve the model. At last, a realworld case study on an airline with 5 fleets, 48 aircrafts and 1 786 flight legs indicated that the profit increase was $1591276 one week and the running time was no more than 4 min, which shows that the model and algorithm are fairly good for domestic airline.

  20. Capacity constrained assignment in spatial databases

    DEFF Research Database (Denmark)

    U, Leong Hou; Yiu, Man Lung; Mouratidis, Kyriakos;

    2008-01-01

    Given a point set P of customers (e.g., WiFi receivers) and a point set Q of service providers (e.g., wireless access points), where each q 2 Q has a capacity q.k, the capacity constrained assignment (CCA) is a matching M Q × P such that (i) each point q 2 Q (p 2 P) appears at most k times (at most...

  1. Total Synthesis and Stereochemical Assignment of Callyspongiolide.

    Science.gov (United States)

    Zhou, Jingjing; Gao, Bowen; Xu, Zhengshuang; Ye, Tao

    2016-06-01

    Total synthesis of four callyspongiolide stereoisomers led to unambiguous assignment of relative and absolute stereochemistry of the natural product. Key features of the convergent, fully stereocontrolled route include the use of Krische allylation, Kiyooka Aldol reaction, Kociénski-Julia olefination, Still-Gennari olefination, Yamaguchi macrocyclization, and Sonogashira coupling reaction. Biological evaluation of the synthesized compounds against an array of cancer cells revealed that the stereochemistry of the macrolactone core played an important role. PMID:27227371

  2. Online Ad Assignment with an Ad Exchange

    OpenAIRE

    Dvořák, Wolfgang; Henzinger, Monika

    2016-01-01

    Ad exchanges are becoming an increasingly popular way to sell advertisement slots on the internet. An ad exchange is basically a spot market for ad impressions. A publisher who has already signed contracts reserving advertisement impressions on his pages can choose between assigning a new ad impression for a new page view to a contracted advertiser or to sell it at an ad exchange. This leads to an online revenue maximization problem for the publisher. Given a new impression to sell decide whe...

  3. Incentivized optimal advert assignment via utility decomposition

    OpenAIRE

    Kelly, F.; Key, P.; Walton, N.

    2014-01-01

    We consider a large-scale Ad-auction where adverts are assigned over a potentially infinite number of searches. We capture the intrinsic asymmetries in information between advertisers, the advert platform and the space of searches: advertisers know and can optimize the average performance of their advertisement campaign; the platform knows and can optimize on each search instance; and, neither party knows the distribution of the infinite number of searches that can occur. We look at maximizin...

  4. Autocorrelation Measures for the Quadratic Assignment Problem

    OpenAIRE

    Chicano, Francisco; Luque, Gabriel; Alba, Enrique

    2012-01-01

    In this article we provide an exact expression for computing the autocorrelation coefficient $\\xi$ and the autocorrelation length $\\ell$ of any arbitrary instance of the Quadratic Assignment Problem (QAP) in polynomial time using its elementary landscape decomposition. We also provide empirical evidence of the autocorrelation length conjecture in QAP and compute the parameters $\\xi$ and $\\ell$ for the 137 instances of the QAPLIB. Our goal is to better characterize the difficulty of this impor...

  5. Automated feedback generation for introductory programming assignments

    OpenAIRE

    Singh, Rishabh; Gulwani, Sumit; Solar-Lezama, Armando

    2013-01-01

    We present a new method for automatically providing feedback for introductory programming problems. In order to use this method, we need a reference implementation of the assignment, and an error model consisting of potential corrections to errors that students might make. Using this information, the system automatically derives minimal corrections to student's incorrect solutions, providing them with a measure of exactly how incorrect a given solution was, as well as feedback about what they...

  6. Optimal State Assignment for Finite State Machines

    OpenAIRE

    Micheli, Giovanni De; Brayton, Robert K.; Sangiovanni-Vincentelli, Alberto

    1985-01-01

    Computer-Aided synthesis of sequential functions of VLSI systems, such as microprocessor control units, must include design optimization procedures to yield area-effective circuits. We model sequential functions as deterministic synchronous Finite State Machines (FSM's), and we consider a regular and structured implementation by means of Programmable Logic Arrays (PLA's) and feedback registers. State assignment, i.e., binary encoding of the internal states of the finite state machine, affects...

  7. File Assignment Policy in Network Storage System

    Institute of Scientific and Technical Information of China (English)

    Cao Qiang; Xie Chang-sheng

    2003-01-01

    Network storage increase capacity and scalability of storage system, data availability and enables the sharing of data among clients. When the developing network technology reduce performance gap between disk and network, however, mismatched policies and access pattern can significantly reduce network storage performance. So the strategy of data placement in system is an important factor that impacts the performance of overall system. In this paper, the two algorithms of file assignment are presented. One is Greed partition that aims at the load balance across all NADs (Network Attached Disk). The other is Sort partition that tries to minimize variance of service time in each NAD. Moreover, we also compare the performance of our two algorithms in practical environment. Our experimental results show that when the size distribution (load characters) of all assigning files is closer and larger, Sort partition provides consistently better response times than Greedy algorithm. However, when the range of all assigning files is wider, there are more small files and access rate is higher, the Greedy algorithm has superior performance in compared with the Sort partition in off-line.

  8. The double-assignment method for the exponential chaotic tabu search in quadratic assignment problems

    Science.gov (United States)

    Shibata, Kazuaki; Horio, Yoshihiko; Aihara, Kazuyuki

    The quadratic assignment problem (QAP) is one of the NP-hard combinatorial optimization problems. An exponential chaotic tabu search using a 2-opt algorithm driven by chaotic neuro-dynamics has been proposed as one heuristic method for solving QAPs. In this paper we first propose a new local search, the double-assignment method, suitable for the exponential chaotic tabu search, which adopts features of the Lin-Kernighan algorithm. We then introduce chaotic neuro-dynamics into the double-assignment method to propose a novel exponential chaotic tabu search. We further improve the proposed exponential chaotic tabu search with the double-assignment method by enhancing the effect of chaotic neuro-dynamics.

  9. 28 CFR 301.103 - Inmate work assignments.

    Science.gov (United States)

    2010-07-01

    ... COMPENSATION General § 301.103 Inmate work assignments. The unit team of each inmate, which ordinarily designates work assignments, or whoever makes work assignments, shall review appropriate medical records... 28 Judicial Administration 2 2010-07-01 2010-07-01 false Inmate work assignments. 301.103...

  10. 49 CFR 821.35 - Assignment, duties and powers.

    Science.gov (United States)

    2010-10-01

    ... SAFETY BOARD RULES OF PRACTICE IN AIR SAFETY PROCEEDINGS Law Judges § 821.35 Assignment, duties and powers. (a) Assignment of law judge and duration of assignment. The chief law judge shall assign a law... addressed to the Case Manager for handling by the chief law judge, who may handle these matters...

  11. Replicating and Extending Research on the Partial Assignment Completion Effect: Is Sunk Cost Related to Partial Assignment Completion Strength?

    Science.gov (United States)

    Hawthorn-Embree, Meredith L.; Taylor, Emily P.; Skinner, Christopher H.; Parkhurst, John; Nalls, Meagan L.

    2014-01-01

    After students acquire a skill, mastery often requires them to choose to engage in assigned academic activities (e.g., independent seatwork, and homework). Although students may be more likely to choose to work on partially completed assignments than on new assignments, the partial assignment completion (PAC) effect may not be very powerful. The…

  12. An assignment based distributed resource manager

    Science.gov (United States)

    Poore, Aubrey B.; Danford, Scott; Hilt, Matthew J.

    2010-04-01

    The goal of this paper is to demonstrate the coordination in real-time of the operation of multiple sensors in such a way that those best-equipped for certain missions should perform those missions for the entire network, while other sensors fill in the gaps with their capabilities. The networked system of sensors must search, detect, track, classify, and engage targets of high value in a timely fashion. The information transmitted should be that which contributes the most toward achieving the performance goals (e.g., track accuracy, track completeness, and a consistent operational picture or single integrated air picture (SIAP)) subject to the network bandwidth constraints and the capabilities of the sensors. We present an overview of an assignment based sensor resource manager, a distributed algorithm for coordinating the assignment problem, and simulation results that validate this approach. While the assignment formulation and algorithms could include both sensor resource and bandwidth constraints with versions for single and multiple time periods, i.e., myopic and non-myopic, the distributed prototype formulation and algorithms developed for these experiments were restricted to the tasking of certain sensors to make measurements and transmit them over the network based on the current air picture. The number of measurements put on the network was controlled by limiting the number of sensors that could transmit measurements on each target. The communication loading was then measured to demonstrate that indeed one can design a distributed sensor resource manager capable of achieving the objectives of significantly reducing the communication loading and maintaining SIAP.

  13. Colony location algorithm for assignment problems

    Institute of Scientific and Technical Information of China (English)

    Dingwei WANG

    2004-01-01

    A novel algorithm called Colony Location Algorithm (CLA) is proposed. It mimics the phenomena in biotic conmunity that colonies of species could be located in the places most suitable to their growth. The factors working on the species location such as the nutrient of soil, resource competition between species, growth and decline process, and effect on environment were considered in CLA via the nutrient function, growth and decline rates, environment evaluation and fertilization strategy.CLA was applied to solve the classical assignment problems. The computation results show that CLA can achieve the optimal solution with higher possibility and shorter running time.

  14. Genetic spectrum assignment model with constraints in cognitive radio networks

    Directory of Open Access Journals (Sweden)

    Fang Ye

    2011-06-01

    Full Text Available The interference constraints of genetic spectrum assignment model in cognitive radio networks are analyzed in this paper. An improved genetic spectrum assignment model is proposed. The population of genetic algorithm is divided into two sets, the feasible spectrum assignment strategies and the randomly updated spectrum assignment strategies. The penalty function is added to the utility function to achieve the spectrum assignment strategy that satisfies the interference constraints and has better fitness. The proposed method is applicable in both the genetic spectrum assignment model and the quantum genetic spectrum assignment mode. It can ensure the randomness of partial chromosomes in the population to some extent, and reduce the computational complexity caused by the constraints-free procedure after the update of population. Simulation results show that the proposed method can achieve better performance than the conventional genetic spectrum assignment model and quantum genetic spectrum assignment model

  15. Protein side-chain resonance assignment and NOE assignment using RDC-defined backbones without TOCSY data

    Energy Technology Data Exchange (ETDEWEB)

    Zeng Jianyang [Duke University, Department of Computer Science (United States); Zhou Pei [Duke University Medical Center, Department of Biochemistry (United States); Donald, Bruce Randall [Duke University, Department of Computer Science (United States)

    2011-08-15

    One bottleneck in NMR structure determination lies in the laborious and time-consuming process of side-chain resonance and NOE assignments. Compared to the well-studied backbone resonance assignment problem, automated side-chain resonance and NOE assignments are relatively less explored. Most NOE assignment algorithms require nearly complete side-chain resonance assignments from a series of through-bond experiments such as HCCH-TOCSY or HCCCONH. Unfortunately, these TOCSY experiments perform poorly on large proteins. To overcome this deficiency, we present a novel algorithm, called Nasca (NOE Assignment and Side-Chain Assignment), to automate both side-chain resonance and NOE assignments and to perform high-resolution protein structure determination in the absence of any explicit through-bond experiment to facilitate side-chain resonance assignment, such as HCCH-TOCSY. After casting the assignment problem into a Markov Random Field (MRF), Nasca extends and applies combinatorial protein design algorithms to compute optimal assignments that best interpret the NMR data. The MRF captures the contact map information of the protein derived from NOESY spectra, exploits the backbone structural information determined by RDCs, and considers all possible side-chain rotamers. The complexity of the combinatorial search is reduced by using a dead-end elimination (DEE) algorithm, which prunes side-chain resonance assignments that are provably not part of the optimal solution. Then an A* search algorithm is employed to find a set of optimal side-chain resonance assignments that best fit the NMR data. These side-chain resonance assignments are then used to resolve the NOE assignment ambiguity and compute high-resolution protein structures. Tests on five proteins show that Nasca assigns resonances for more than 90% of side-chain protons, and achieves about 80% correct assignments. The final structures computed using the NOE distance restraints assigned by Nasca have backbone RMSD 0

  16. Assignment of uncertainties to scientific data

    International Nuclear Information System (INIS)

    Long-standing problems of uncertainty assignment to scientific data came into a sharp focus in recent years when uncertainty information ('covariance files') had to be added to application-oriented large libraries of evaluated nuclear data such as ENDF and JEF. Question arouse about the best way to express uncertainties, the meaning of statistical and systematic errors, the origin of correlation and construction of covariance matrices, the combination of uncertain data from different sources, the general usefulness of results that are strictly valid only for Gaussian or only for linear statistical models, etc. Conventional statistical theory is often unable to give unambiguous answers, and tends to fail when statistics is bad so that prior information becomes crucial. Modern probability theory, on the other hand, incorporating decision information becomes group-theoretic results, is shown to provide straight and unique answers to such questions, and to deal easily with prior information and small samples. (author). 10 refs

  17. Diagnosis code assignment: models and evaluation metrics

    Science.gov (United States)

    Perotte, Adler; Pivovarov, Rimma; Natarajan, Karthik; Weiskopf, Nicole; Wood, Frank; Elhadad, Noémie

    2014-01-01

    Background and objective The volume of healthcare data is growing rapidly with the adoption of health information technology. We focus on automated ICD9 code assignment from discharge summary content and methods for evaluating such assignments. Methods We study ICD9 diagnosis codes and discharge summaries from the publicly available Multiparameter Intelligent Monitoring in Intensive Care II (MIMIC II) repository. We experiment with two coding approaches: one that treats each ICD9 code independently of each other (flat classifier), and one that leverages the hierarchical nature of ICD9 codes into its modeling (hierarchy-based classifier). We propose novel evaluation metrics, which reflect the distances among gold-standard and predicted codes and their locations in the ICD9 tree. Experimental setup, code for modeling, and evaluation scripts are made available to the research community. Results The hierarchy-based classifier outperforms the flat classifier with F-measures of 39.5% and 27.6%, respectively, when trained on 20 533 documents and tested on 2282 documents. While recall is improved at the expense of precision, our novel evaluation metrics show a more refined assessment: for instance, the hierarchy-based classifier identifies the correct sub-tree of gold-standard codes more often than the flat classifier. Error analysis reveals that gold-standard codes are not perfect, and as such the recall and precision are likely underestimated. Conclusions Hierarchy-based classification yields better ICD9 coding than flat classification for MIMIC patients. Automated ICD9 coding is an example of a task for which data and tools can be shared and for which the research community can work together to build on shared models and advance the state of the art. PMID:24296907

  18. Solving multiconstraint assignment problems using learning automata.

    Science.gov (United States)

    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

  19. Improving load balance with flexibly assignable tasks

    Energy Technology Data Exchange (ETDEWEB)

    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.

  20. Assignment Choice: Do Students Choose Briefer Assignments or Finishing What They Started?

    Science.gov (United States)

    Hawthorn-Embree, Meredith L.; Skinner, Christopher H.; Parkhurst, John; O'Neil, Michael; Conley, Elisha

    2010-01-01

    Academic skill development requires engagement in effortful academic behaviors. Although students may be more likely to choose to engage in behaviors that require less effort, they also may be motivated to complete assignments that they have already begun. Seventh-grade students (N = 88) began a mathematics computation worksheet, but were stopped…

  1. System optimal traffic assignment with departure time choice

    OpenAIRE

    Chow, A. H. F.

    2007-01-01

    This thesis investigates analytical dynamic system optimal assignment with departure time choice in a rigorous and original way. Dynamic system optimal assignment is formulated here as a state-dependent optimal control problem. A fixed volume of traffic is assigned to departure times and routes such that the total system travel cost is minimized. Although the system optimal assignment is not a realistic representation of traffic, it provides a bound on performance and shows how...

  2. 24 CFR 255.2 - GNMA right to assignment.

    Science.gov (United States)

    2010-04-01

    ... will have the right to perfect an assignment of the mortgage to itself. However, before exercising this right, GNMA will attempt to have the Mortgage assigned to another eligible coinsuring lender (unless... defaulting lender-issuer, GNMA will have the right to perfect an assignment of the Coinsured...

  3. 24 CFR 252.2 - GNMA right to assignment.

    Science.gov (United States)

    2010-04-01

    ....2 GNMA right to assignment. If the lender-issuer defaults on its obligations under the GNMA Mortgage... defaulting lender-issuer, GNMA will have the right to perfect an assignment of the mortgage to itself. However, before exercising this right, GNMA will attempt to have the Mortgage assigned to another...

  4. 24 CFR 251.2 - GNMA right to assignment.

    Science.gov (United States)

    2010-04-01

    ... right to assignment. If the lender-issuer defaults on its obligations under the GNMA Mortgage-Backed...-issuer, GNMA will have the right to perfect an assignment of the mortgage to itself. However, before exercising this right, GNMA will attempt to have the Mortgage assigned to another eligible coinsuring...

  5. Solving the k-cardinality assignment problem by transformation

    NARCIS (Netherlands)

    A. Volgenant

    2004-01-01

    The k-cardinality Linear Assignment Problem (k-LAP) with k a given integer is a generalization of the linear assignment problem: one wants to assign k rows (a free choice out of more rows) to k columns (a free choice out of more columns) minimizing the sum of the corresponding costs. For this polyno

  6. 75 FR 55354 - Delegation of Authority and Assignment of Responsibilities

    Science.gov (United States)

    2010-09-10

    ... of the Secretary Delegation of Authority and Assignment of Responsibilities Secretary's Order 3-2010 Subject: Delegation of Authority and Assignment of Responsibilities to the Employee Benefits Security Administration. 1. Purpose. To delegate authority and assign responsibilities for the administration of...

  7. Optimal assignment of incoming flights to baggage carousels at airports

    DEFF Research Database (Denmark)

    Barth, Torben C.

    The problem considered in this report is an assignment problem occurring at airports. This problem concerns the assignment of baggage carousels in baggage claim halls to arriving aircraft (baggage carousel assignment problem). This is a highly dynamic problem since disruptions frequently occur du...

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

    Science.gov (United States)

    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…

  9. Assessment of a Diversity Assignment in a PR Principles Course

    Science.gov (United States)

    Gallicano, Tiffany Derville; Stansberry, Kathleen

    2012-01-01

    This study assesses an assignment for incorporating diversity into the principles of public relations course. The assignment is tailored to the challenges of using an active learning approach in a large lecture class. For the assignment, students write a goal, objectives, strategies, an identification of tactics, and evaluation plans for either…

  10. A Bayesian approach to simultaneously quantify assignments and linguistic uncertainty

    Energy Technology Data Exchange (ETDEWEB)

    Chavez, Gregory M [Los Alamos National Laboratory; Booker, Jane M [BOOKER SCIENTIFIC FREDERICKSBURG; Ross, Timothy J [UNM

    2010-10-07

    Subject matter expert assessments can include both assignment and linguistic uncertainty. This paper examines assessments containing linguistic uncertainty associated with a qualitative description of a specific state of interest and the assignment uncertainty associated with assigning a qualitative value to that state. A Bayesian approach is examined to simultaneously quantify both assignment and linguistic uncertainty in the posterior probability. The approach is applied to a simplified damage assessment model involving both assignment and linguistic uncertainty. The utility of the approach and the conditions under which the approach is feasible are examined and identified.

  11. Optimal Index Assignment for Multiple Description Scalar Quantization

    CERN Document Server

    Zhang, Guoqiang; Kleijn, W Bastiaan

    2011-01-01

    We provide a method for designing an optimal index assignment for scalar K-description coding. The method stems from a construction of translated scalar lattices, which provides a performance advantage by exploiting a so-called staggered gain. Interestingly, generation of the optimal index assignment is based on a lattice in K-1 dimensional space. The use of the K-1 dimensional lattice facilitates analytic insight into the performance and eliminates the need for a greedy optimization of the index assignment. It is shown that that the optimal index assignment is not unique. This is illustrated for the two-description case, where a periodic index assignment is selected from possible optimal assignments and described in detail. The new index assignment is applied to design of a K-description quantizer, which is found to outperform a reference K-description quantizer at high rates. The performance advantage due to the staggered gain increases with increasing redundancy among the descriptions.

  12. Efficient Credit Assignment through Evaluation Function Decomposition

    Science.gov (United States)

    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.

  13. Regulatory focus and the assignment of punishment

    Directory of Open Access Journals (Sweden)

    Chloe Carmichael

    2007-06-01

    Full Text Available Regulatory Focus has been demonstrated to influence human behavior in a number of domains, such as object valuation and readiness to commit time or money to social projects. It has also been demonstrated to influence an individual’s approach to mistakes; and a person’s preference for global or local processing of information. The present work seeks to consider how regulatory focus might interact with punitive behaviors, specifically, the assignment of legal punishment. In this study, 240 undergraduates completed a series of written instruments that assessed their regulatory focus. They read a vignette that described a target that commits a crime, is detected by the police, and is arrested due to a careless mistake. Participants were asked what level of legal punishment they deemed appropriate. Participants’ punitive evaluations show that there are significant interactions a between the regulatory focus of the participant and the regulatory focus of the target and b between the regulatory focus of the participant and the level of detail used to describe the target and her behavior. In each case, when the regulatory foci matched, causing ‘fit,’ the participant was more lenient than in the non-fit condition.

  14. Towards Automated Structure-Based NMR Resonance Assignment

    Science.gov (United States)

    Jang, Richard; Gao, Xin; Li, Ming

    We propose a general framework for solving the structure-based NMR backbone resonance assignment problem. The core is a novel 0-1 integer programming model that can start from a complete or partial assignment, generate multiple assignments, and model not only the assignment of spins to residues, but also pairwise dependencies consisting of pairs of spins to pairs of residues. It is still a challenge for automated resonance assignment systems to perform the assignment directly from spectra without any manual intervention. To test the feasibility of this for structure-based assignment, we integrated our system with our automated peak picking and sequence-based resonance assignment system to obtain an assignment for the protein TM1112 with 91% recall and 99% precision without manual intervention. Since using a known structure has the potential to allow one to use only N-labeled NMR data and avoid the added expense of using C-labeled data, we work towards the goal of automated structure-based assignment using only such labeled data. Our system reduced the assignment error of Xiong-Pandurangan-Bailey-Kellogg's contact replacement (CR) method, which to our knowledge is the most error-tolerant method for this problem, by 5 folds on average. By using an iterative algorithm, our system has the added capability of using the NOESY data to correct assignment errors due to errors in predicting the amino acid and secondary structure type of each spin system. On a publicly available data set for Ubiquitin, where the type prediction accuracy is 83%, we achieved 91% assignment accuracy, compared to the 59% accuracy that was obtained without correcting for typing errors.

  15. Why the Rhetoric of CS Programming Assignments Matters

    Science.gov (United States)

    Wolfe, Joanna

    2004-06-01

    Despite the multiple potential benefits of asking students working on programming tasks to consider human factors, most programming assignments narrowly focus on technical details and requirements. Female students in particular may be attracted to assignments that emphasize human as well as technical factors. To assess how students respond to changes in the rhetorical presentation of programming instructions, 81 students completed questionnaires evaluating different assignment instructions. Students generally perceived assignments emphasizing real-world contexts and users as more motivating and enjoyable to program than those that did not emphasize human factors. Moreover, when asked what makes a "good" programming assignment, over half of the students volunteered that they looked for assignments stressing a real-world purpose, use or application.

  16. Variability of Cranial Nerve Assignment to Speech and Swallow Muscles

    OpenAIRE

    Morrey, Kristina

    2011-01-01

    The object of this study was to examine and document anatomical variability of cranial nerve assignment for muscles of the speech and swallow mechanism. Through means of textbook review, the study’s first purpose was to identify which cranial nerves were attributed to the innervation for muscles associated with the speech and swallow mechanism. The second purpose was to examine if cranial nerve assignment, field of study, or geographic region explained differences in cranial nerve assignment ...

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

    OpenAIRE

    Victor Fernandez-Viagas; 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, tog...

  18. CYCLE TIMES ASSIGNMENT OF NONLINEAR DISCRETE EVENT DYNAMIC SYSTEMS

    Institute of Scientific and Technical Information of China (English)

    CHEN Wende

    2000-01-01

    In this paper, nonautonomous models of Discrete Event Dynamic Systems (DEDS) are established by min-max function, reachability and observability are defined,the problem on cycle times assignment of DEDS, which corresponds with the important problem on poles assignment of linear systems, is studied. By Gunawardena et al.'Duality Theorem following results are obtained: Cycle times of system can be assigned under state feedback(or output feedback) if and only if system is reachable (or reachable and obserbable).

  19. Electronic marking of mathematics assignments using Microsoft Word 2007

    OpenAIRE

    Lowe, Tim; Mestel, Ben; Arrowsmith, Gaynor

    2008-01-01

    This paper describes on-going work within the Department of Mathematics and Statistics at The Open University to enable distance learning students to electronically submit assignments rich in mathematical notation and diagrams, and for those assignments to be marked and returned electronically by their tutor. A trial is currently underway of a prototype system that enables students to submit assignments in a range of electronic formats, which are then converted to Microsoft Word 2007 format t...

  20. An Improved Point-track Optimal Assignment Algorithm

    OpenAIRE

    Zhonglei Zhang; Weihua Zhang; Li Zhou

    2013-01-01

    In order to improve the accuracy of data association of the Optimal Assignment (OA) algorithm based on dynamic information, an improved Point-Track Optimal Assignment (IPTOA) algorithm based on multi-source information is proposed. The improved algorithm gets valid 3-tuple of measurement set by solving 3-Dimensional (3-D) assignment problem which is based on dynamic information. Then fuses multi-source information by combination rule of D-S evidence theory and constructs the point-track corre...

  1. An efficient and impartial online algorithm for kidney assignment network

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    An online algorithm balancing the efficiency and equity principles is proposed for the kidney resource assignment when only the current patient and resource information is known to the assignment network. In the algorithm, the assignment is made according to the priority, which is calculated according to the efficiency principle and the equity principle. The efficiency principle is concerned with the post-transplantation immunity spending caused by the possible post-operation immunity rejection and patient’...

  2. Assigning Wikipedia editing: Triangulation toward understanding university student engagement

    OpenAIRE

    Roth, Amy; Davis, Rochelle; Carver, Brian

    2013-01-01

    Professors across the United States participated in the first direct effort by the Wikimedia Foundation, the non-profit that supports Wikipedia, to engage the academic community and integrate Wikipedia into a class assignment. Three project participants, from different areas of study, conducted independent research into university student motivations for a Wikipedia assignment. We triangulate those data in this paper to describe how student motivations differ for a Wikipedia assignment from a...

  3. 28 CFR 524.72 - CIM assignment categories.

    Science.gov (United States)

    2010-07-01

    ... publicity. Inmates who have received widespread publicity as a result of their criminal activity or... require special management attention, but who do not ordinarily warrant assignment in paragraphs...

  4. A New Secondary Structure Assignment Algorithm Using Cα Backbone Fragments.

    Science.gov (United States)

    Cao, Chen; Wang, Guishen; Liu, An; Xu, Shutan; Wang, Lincong; Zou, Shuxue

    2016-01-01

    The assignment of secondary structure elements in proteins is a key step in the analysis of their structures and functions. We have developed an algorithm, SACF (secondary structure assignment based on Cα fragments), for secondary structure element (SSE) assignment based on the alignment of Cα backbone fragments with central poses derived by clustering known SSE fragments. The assignment algorithm consists of three steps: First, the outlier fragments on known SSEs are detected. Next, the remaining fragments are clustered to obtain the central fragments for each cluster. Finally, the central fragments are used as a template to make assignments. Following a large-scale comparison of 11 secondary structure assignment methods, SACF, KAKSI and PROSS are found to have similar agreement with DSSP, while PCASSO agrees with DSSP best. SACF and PCASSO show preference to reducing residues in N and C cap regions, whereas KAKSI, P-SEA and SEGNO tend to add residues to the terminals when DSSP assignment is taken as standard. Moreover, our algorithm is able to assign subtle helices (310-helix, π-helix and left-handed helix) and make uniform assignments, as well as to detect rare SSEs in β-sheets or long helices as outlier fragments from other programs. The structural uniformity should be useful for protein structure classification and prediction, while outlier fragments underlie the structure-function relationship. PMID:26978354

  5. Linear Assignment Maps for Correlated System-Environment States

    CERN Document Server

    Rodríguez-Rosario, César A; Aspuru-Guzik, Alán

    2009-01-01

    An assignment map is a mathematical operator that describes initial system-environment states for an open quantum systems. We reexamine the notion of assignments, introduced by Pechukas, and show the conditions for which linear assignments can account for correlations between the system and the environment. We study the role of other conditions, such as consistency and positivity of the map, and show the effects of relaxing these. Finally, we establish a connection between the violation of positivity of linear assignments and the no-broadcasting theorem.

  6. Ant Colony Algorithm and Simulation for Robust Airport Gate Assignment

    Directory of Open Access Journals (Sweden)

    Hui Zhao

    2014-01-01

    Full Text Available Airport gate assignment is core task for airport ground operations. Due to the fact that the departure and arrival time of flights may be influenced by many random factors, the airport gate assignment scheme may encounter gate conflict and many other problems. This paper aims at finding a robust solution for airport gate assignment problem. A mixed integer model is proposed to formulate the problem, and colony algorithm is designed to solve this model. Simulation result shows that, in consideration of robustness, the ability of antidisturbance for airport gate assignment scheme has much improved.

  7. 7 CFR 1210.540 - OMB assigned numbers.

    Science.gov (United States)

    2010-01-01

    ... AGREEMENTS AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE WATERMELON RESEARCH AND... Number 0581-0093, except that Board member nominee background information sheets are assigned OMB...

  8. Active learning in pre-class assignments: Exploring the use of interactive simulations to enhance reading assignments

    CERN Document Server

    Stang, Jared B; Perez, Sarah; Ives, Joss; Roll, Ido

    2016-01-01

    Pre-class reading assignments help prepare students for active classes by providing a first exposure to the terms and concepts to be used during class. We investigate if the use of inquiry-oriented PhET-based activities in conjunction with pre-class reading assignments can improve both the preparation of students for in-class learning and student attitudes towards and engagement with pre-class assignments. Over three course modules covering different topics, students were assigned randomly to complete either a textbook-only pre-class assignment or both a textbook pre-class assignment and a PhET-based activity. The assignments helped prepare students for class, as measured by performance on the pre-class quiz relative to a beginning-of-semester pre-test, but no evidence for increased learning due the PhET activity was observed. Students rated the assignments which included PhET as more enjoyable and, for the topic latest in the semester, reported engaging more with the assignments when PhET was included.

  9. Online Assignments in Economics: A Test of Their Effectiveness

    Science.gov (United States)

    Kennelly, Brendan; Considine, John; Flannery, Darragh

    2011-01-01

    This article compares the effectiveness of online and paper-based assignments and tutorials using summative assessment results. All of the students in a large managerial economics course at National University of Ireland, Galway were asked to do six assignments online using Aplia and to do two on paper. The authors examined whether a student's…

  10. The Pedagogy of Assignments in Social Justice Teacher Education

    Science.gov (United States)

    McDonald, Morva A.

    2008-01-01

    This article examines the pedagogy of assignments in social justice teacher education programs. Employing a programmatic view, this study aims to understand the collective representation of social justice provided by assignments across multiple courses. Findings come from a qualitative case study of two social justice programs. Drawing on concepts…

  11. Assessing Faculty Bias in Rating Embedded Assurance of Learning Assignments

    Science.gov (United States)

    Kim, Dong-gook; Helms, Marilyn M.

    2016-01-01

    Assurance of learning (AoL) processes for continuous improvement and accreditation require business schools to assess program goals. Findings from the process can lead to changes in course design or curriculum. Often AoL assignments are embedded into existing courses and assessed at regular intervals. Faculty members may evaluate an assignment in…

  12. Negotiating Languages and Cultures: Enacting Translingualism through a Translation Assignment

    Science.gov (United States)

    Kiernan, Julia; Meier, Joyce; Wang, Xiqiao

    2016-01-01

    This collaborative project explores the affordances of a translation assignment in the context of a learner-centered pedagogy that places composition students' movement among languages and cultures as both a site for inquiry and subject of analysis. The translation assignment asks students to translate scholarly articles or culture stories from…

  13. 14 CFR 1245.109 - Assignment of title to NASA.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 5 2010-01-01 2010-01-01 false Assignment of title to NASA. 1245.109... INTELLECTUAL PROPERTY RIGHTS Patent Waiver Regulations § 1245.109 Assignment of title to NASA. (a) The instrument of waiver set forth in § 1245.115(c) shall be voided by NASA with respect to the domestic title...

  14. 24 CFR 203.350 - Assignment of mortgage.

    Science.gov (United States)

    2010-04-01

    ... 24 Housing and Urban Development 2 2010-04-01 2010-04-01 false Assignment of mortgage. 203.350... URBAN DEVELOPMENT MORTGAGE AND LOAN INSURANCE PROGRAMS UNDER NATIONAL HOUSING ACT AND OTHER AUTHORITIES SINGLE FAMILY MORTGAGE INSURANCE Contract Rights and Obligations Assignment of Mortgage §...

  15. On the Use of Writing Assignments in Intermediate Microeconomic Theory

    Science.gov (United States)

    O'Neill, Patrick B.

    2009-01-01

    A typical writing assignment in upper level required courses is a term paper. However many economics majors, particularly those in business schools, need to develop skill at writing shorter pieces. In this paper I describe numerous examples of shorter writing assignments that I have incorporated into an Intermediate Microeconomic Theory course.…

  16. 7 CFR 1530.115 - Paperwork Reduction Act assigned number.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false Paperwork Reduction Act assigned number. 1530.115... SERVICE, DEPARTMENT OF AGRICULTURE THE REFINED SUGAR RE-EXPORT PROGRAM, THE SUGAR CONTAINING PRODUCTS RE-EXPORT PROGRAM, AND THE POLYHYDRIC ALCOHOL PROGRAM § 1530.115 Paperwork Reduction Act assigned...

  17. An eigenvalue/eigenvector assignment algorithm using output feedback

    Science.gov (United States)

    Mielke, R. R.; Liberty, S. R.

    1983-01-01

    An eigenvalue/eigenvector assignment algorithm using stationary output feedback is presented. The algorithm permits assignment of min (n, m + r - 1) eigenvalues and max (m-1, r-1) eigenvectors, where n, m, r refer to the system state, input and output dimensions, respectively. An example is given to illustrate the design procedures.

  18. The Eco-Sculpture Assignment: Using Art to Scaffold Metacognition

    Science.gov (United States)

    Polegato, Rosemary

    2014-01-01

    The Eco-Sculpture Assignment demonstrates that art may be used as a conduit to scaffold metacognition in marketing courses. Theoretical underpinnings are drawn from the literature on pedagogy used in general, marketing, and art education contexts. The assignment is described in detail, followed by examples of learner response that illustrate…

  19. Graduate Writing Assignments across Faculties in a Canadian University

    Science.gov (United States)

    Shi, Ling; Dong, Yanning

    2015-01-01

    This study examines 143 graduate assignments across 12 faculties or schools in a Canadian university in order to identify types of writing tasks. Based on the descriptions provided by the instructors, we identified nine types of assignments, with scholarly essay being the most common, followed by summary and response, literature review, project,…

  20. 42 CFR 60.38 - Assignment of a HEAL loan.

    Science.gov (United States)

    2010-10-01

    ... assigned except to another HEAL lender, the Student Loan Marketing Association (popularly known as “Sallie Mae”), or a public entity in the business of purchasing student loans, and except as provided in § 60... responsibility under the HEAL regulations. (d) Bankruptcy. If a lender or holder assigns a HEAL loan to a...

  1. 47 CFR 52.111 - Toll free number assignment.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 3 2010-10-01 2010-10-01 false Toll free number assignment. 52.111 Section 52...) NUMBERING Toll Free Numbers § 52.111 Toll free number assignment. Toll free numbers shall be made available on a first-come, first-served basis unless otherwise directed by the Commission....

  2. 76 FR 34658 - The Internet Assigned Numbers Authority (IANA) Functions

    Science.gov (United States)

    2011-06-14

    ... of Inquiry, Request for Comments on the Internet Assigned Numbers Authority (IANA) Functions, 76 FR 10569 (Feb. 25, 2011), available at http://www.ntia.doc.gov/frnotices/2011/fr_ianafunctionsnoi_02252011... National Telecommunications and Information Administration The Internet Assigned Numbers Authority...

  3. Graphical interpretation of Boolean operators for protein NMR assignments

    NARCIS (Netherlands)

    Verdegem, Dries; Dijkstra, Klaas; Hanoulle, Xavier; Lippens, Guy

    2008-01-01

    We have developed a graphics based algorithm for semi-automated protein NMR assignments. Using the basic sequential triple resonance assignment strategy, the method is inspired by the Boolean operators as it applies "AND"-, "OR"- and "NOT"-like operations on planes pulled out of the classical three-

  4. Evaluation of a UMLS Auditing Process of Semantic Type Assignments

    Science.gov (United States)

    Gu, Huanying; Hripcsak, George; Chen, Yan; Morrey, C. Paul; Elhanan, Gai; Cimino, James J.; Geller, James; Perl, Yehoshua

    2007-01-01

    The UMLS is a terminological system that integrates many source terminologies. Each concept in the UMLS is assigned one or more semantic types from the Semantic Network, an upper level ontology for biomedicine. Due to the complexity of the UMLS, errors exist in the semantic type assignments. Finding assignment errors may unearth modeling errors. Even with sophisticated tools, discovering assignment errors requires manual review. In this paper we describe the evaluation of an auditing project of UMLS semantic type assignments. We studied the performance of the auditors who reviewed potential errors. We found that four auditors, interacting according to a multi-step protocol, identified a high rate of errors (one or more errors in 81% of concepts studied) and that results were sufficiently reliable (0.67 to 0.70) for the two most common types of errors. However, reliability was low for each individual auditor, suggesting that review of potential errors is resource-intensive. PMID:18693845

  5. New Channel Assignment Method for Access Points in Wireless LANs

    Directory of Open Access Journals (Sweden)

    Mohammed Fawzi Al-Hunaity

    2011-11-01

    Full Text Available Wireless LANs topology communicates using radio frequencies. The number of these frequencies is limited and not enough to assign a special frequency for each Access Point, this means that the communication topology should use a e-use mechanism, which allows the system to assign the same frequency that assigned previously for another access point. In this paper, we suggest a method to assign frequency channels to access points in a Wireless LANs system. The goal of this paper is to reach the assignment that prevents interference between access points especially neighbor ones. We used Genetic Algorithm to work on this issue, it is considered as an Expert System and one of the main multi point search technique used in computing to solve optimization and search problems.

  6. Fast assignment reduction in inconsistent incomplete decision systems

    Institute of Scientific and Technical Information of China (English)

    Min Li; Shaobo Deng; Shengzhong Feng; Jianping Fan

    2014-01-01

    This paper focuses on fast algorithm for computing the assignment reduct in inconsistent incomplete decision systems. It is quite inconvenient to judge the assignment reduct directly ac-cording to its definition. We propose the judgment theorem for the assignment reduct in the inconsistent incomplete decision system, which greatly simplifies judging this type reduct. On such basis, we derive a novel attribute significance measure and construct the fast assignment reduction algorithm (F-ARA), intended for com-puting the assignment reduct in inconsistent incomplete decision systems. Final y, we make a comparison between F-ARA and the discernibility matrix-based method by experiments on 13 Univer-sity of California at Irvine (UCI) datasets, and the experimental results prove that F-ARA is efficient and feasible.

  7. Evaluation of a UMLS Auditing Process of Semantic Type Assignments.

    Science.gov (United States)

    Gu, Huanying Helen; Hripcsak, George; Chen, Yan; Morrey, C Paul; Elhanan, Gai; Cimino, James; Geller, James; Perl, Yehoshua

    2007-01-01

    The UMLS is a terminological system that integrates many source terminologies. Each concept in the UMLS is assigned one or more semantic types from the Semantic Network, an upper level ontology for biomedicine. Due to the complexity of the UMLS, errors exist in the semantic type assignments. Finding assignment errors may unearth modeling errors. Even with sophisticated tools, discovering assignment errors requires manual review. In this paper we describe the evaluation of an auditing project of UMLS semantic type assignments. We studied the performance of the auditors who reviewed potential errors. We found that four auditors, interacting according to a multi-step protocol, identified a high rate of errors (one or more errors in 81% of concepts studied) and that results were sufficiently reliable (0.67 to 0.70) for the two most common types of errors. However, reliability was low for each individual auditor, suggesting that review of potential errors is resource-intensive. PMID:18693845

  8. Heuristic for Task-Worker Assignment with Varying Learning Slopes

    Directory of Open Access Journals (Sweden)

    Wipawee Tharmmaphornphilas

    2010-04-01

    Full Text Available Fashion industry has variety products, so the multi-skilled workers are required to improve flexibility in production and assignment. Generally the supervisor will assign task to the workers based on skill and skill levels of worker. Since in fashion industry new product styles are launched more frequently and the order size tends to be smaller, the workers always learn when the raw material and the production process changes. Consequently they require less time to produce the succeeding units of a task based on their learning ability. Since the workers have both experience and inexperience workers, so each worker has different skill level and learning ability. Consequently, the assignment which assumed constant skill level is not proper to use. This paper proposes a task-worker assignment considering worker skill levels and learning abilities. Processing time of each worker changes along production period due to a worker learning ability. We focus on a task-worker assignment in a fashion industry where tasks are ordered in series; the number of tasks is greater than the number of workers. Therefore, workers can perform multiple assignments followed the precedence restriction as an assembly line balancing problem. The problem is formulated in an integer linear programming model with objective to minimize makespan. A heuristic is proposed to determine the lower bound (LB and the upper bound (UB of the problem and the best assignment is determined. The performance of the heuristic method is tested by comparing quality of solution and computational time to optimal solutions.

  9. Data requirements for reliable chemical shift assignments in deuterated proteins

    International Nuclear Information System (INIS)

    The information required for chemical shift assignments in large deuterated proteins was investigated using a Monte Carlo approach (Hitchens et al., 2002). In particular, the consequences of missing amide resonances on the reliability of assignments derived from Cα and CO or from Cα and Cβ chemical shifts was investigated. Missing amide resonances reduce both the number of correct assignments as well as the confidence in these assignments. More significantly, a number of undetectable errors can arise when as few as 9% of the amide resonances are missing from the spectra. However, the use of information from residue specific labeling as well as local and long-range distance constraints improves the reliability and extent of assignment. It is also shown that missing residues have only a minor effect on the assignment of protein-ligand complexes using Cα and CO chemical shifts and Cα inter-residue connectivity, provided that the known chemical shifts of the unliganded protein are utilized in the assignment process

  10. A New Approach to Pointer Analysis for Assignments

    Institute of Scientific and Technical Information of China (English)

    HUANG Bo; ZANG Binyu; LI Jing; ZHU Chuanqi

    2001-01-01

    Pointer analysis is a technique to identify at compile-time the po tential values of the pointer expressions in a program, which promises significant benefits for optimizing and parallelizing compilers. In this paper, a new approach to pointer analysis for assignments is presented. In this approach, assignments are clas sified into three categories: pointer assignments, structure (union) assignments and normal assignments which don't affect the point-to information. Pointer analyses for these three kinds of assignments respectively make up the integrated algorithm. When analyzing a pointer assignment, a new method called expression expansion is used to calculate both the left targets and the right targets. The integration of recursive data structure analysis into pointer analysis is a significant originality of this paper, which uniforms the pointer analysis for heap variables and the pointer analysis for stack variables. This algorithm is implemented in Agassiz, an analyzing tool for C programs developed by Institute of Parallel Processing, Fudan University. Its accuracy and effectiveness are illustrated by experimental data.

  11. Localized Algorithm for Channel Assignment in Cognitive Radio Networks

    Directory of Open Access Journals (Sweden)

    Harpreet Kaur

    2015-12-01

    Full Text Available Cognitive Radio has been emerged as a revolutionary solution to migrate the current shortage of spectrum allocation in wireless networks. In this paper, an improved localized channel allocation algorithm based on channel weight is proposed. A factor of channel stability is introduced based on link environment, which efficiently assigns the best channels to the links. Based on the framework, a conflict resolution strategy is used to make the scheme adaptable to different network conditions. Calculations indicate that this algorithm can reduce the conflicts, increase the delivery rate and link assignment rate compared with the basic channel assignment algorithm.

  12. Computational Hardness of Enumerating Satisfying Spin-Assignments in Triangulations

    CERN Document Server

    Jiménez, Andrea

    2011-01-01

    Satisfying spin-assignments in triangulations of a surface are states of minimum energy of the antiferromagnetic Ising model on triangulations which correspond (via geometric duality) to perfect matchings in cubic bridgeless graphs. In this work we show that it is NP-complete to decide whether or not a surface triangulation admits a satisfying spin-assignment, and that it is #P-complete to determine the number of such assignments. Both results are derived via an elaborate (and atypical) reduction that maps a Boolean formula in 3-conjunctive normal form into a triangulation of an orientable closed surface.

  13. Graphical interpretation of Boolean operators for protein NMR assignments.

    Science.gov (United States)

    Verdegem, Dries; Dijkstra, Klaas; Hanoulle, Xavier; Lippens, Guy

    2008-09-01

    We have developed a graphics based algorithm for semi-automated protein NMR assignments. Using the basic sequential triple resonance assignment strategy, the method is inspired by the Boolean operators as it applies "AND"-, "OR"- and "NOT"-like operations on planes pulled out of the classical three-dimensional spectra to obtain its functionality. The method's strength lies in the continuous graphical presentation of the spectra, allowing both a semi-automatic peaklist construction and sequential assignment. We demonstrate here its general use for the case of a folded protein with a well-dispersed spectrum, but equally for a natively unfolded protein where spectral resolution is minimal. PMID:18762868

  14. Subcarrier Group Assignment for MC-CDMA Wireless Networks

    Directory of Open Access Journals (Sweden)

    Tho Le-Ngoc

    2007-12-01

    Full Text Available Two interference-based subcarrier group assignment strategies in dynamic resource allocation are proposed for MC-CDMA wireless systems to achieve high throughput in a multicell environment. Least interfered group assignment (LIGA selects for each session the subcarrier group on which the user receives the minimum interference, while best channel ratio group assignment (BCRGA chooses the subcarrier group with the largest channel response-to-interference ratio. Both analytical framework and simulation model are developed for evaluation of throughput distribution of the proposed schemes. An iterative approach is devised to handle the complex interdependency between multicell interference profiles in the throughput analysis. Illustrative results show significant throughput improvement offered by the interference-based assignment schemes for MC-CDMA multicell wireless systems. In particular, under low loading conditions, LIGA renders the best performance. However, as the load increases BCRGA tends to offer superior performance.

  15. 28 CFR 544.74 - Work assignment limitations.

    Science.gov (United States)

    2010-07-01

    ... appointment and promotion apply to all inmates, including those exempted from required participation in the... of the assignment. Local Federal Prison Industry (FPI) management may elect to retain the...

  16. Reading Assignment 8 (theory sessions) - 31710 General Linguistics I

    OpenAIRE

    Muñoz Baell, Irma María

    2012-01-01

    Reading Assignment 8 - Driving questions: HOW IS LANGUAGE STUDIED? WHAT DOES IT MEAN THAT LANGUAGE IS STUDIED SCIENTIFICALLY? - Academic year 2011-2012 (ECTS credits: 6 (150 hours)). See the Planned Weekly Schedule (Theory sessions).

  17. An Improved Point-track Optimal Assignment Algorithm

    Directory of Open Access Journals (Sweden)

    Zhonglei Zhang

    2013-12-01

    Full Text Available In order to improve the accuracy of data association of the Optimal Assignment (OA algorithm based on dynamic information, an improved Point-Track Optimal Assignment (IPTOA algorithm based on multi-source information is proposed. The improved algorithm gets valid 3-tuple of measurement set by solving 3-Dimensional (3-D assignment problem which is based on dynamic information. Then fuses multi-source information by combination rule of D-S evidence theory and constructs the point-track correlation matrix between valid 3-tuple of measurement and target track. Compared with the optimal assignment algorithm based on dynamic information, the new algorithm effectively fuses multi-source information to correlate measurement data, which improves the performance of multi-target tracking in different degrees. Simulation results verify the feasibility and effectiveness of the new algorithm.

  18. Calibrated peer review assignments for the earth sciences

    Science.gov (United States)

    Rudd, J.A., II; Wang, V.Z.; Cervato, C.; Ridky, R.W.

    2009-01-01

    Calibrated Peer Review ??? (CPR), a web-based instructional tool developed as part of the National Science Foundation reform initiatives in undergraduate science education, allows instructors to incorporate multiple writing assignments in large courses without overwhelming the instructor. This study reports successful implementation of CPR in a large, introductory geology course and student learning of geoscience content. For each CPR assignment in this study, students studied web-based and paper resources, wrote an essay, and reviewed seven essays (three from the instructor, three from peers, and their own) on the topic. Although many students expressed negative attitudes and concerns, particularly about the peer review process of this innovative instructional approach, they also recognized the learning potential of completing CPR assignments. Comparing instruction on earthquakes and plate boundaries using a CPR assignment vs. an instructional video lecture and homework essay with extensive instructor feedback, students mastered more content via CPR instruction.

  19. Frequency Assignment Problem with Net Filter Discrimination Constraints

    OpenAIRE

    Yilmaz, H. Birkan; Koo, Bon-Hong; Park, Sung-ho; Park, Hwi-Sung; Ham, Jae-Hyun; Chae, Chan-Byoung

    2016-01-01

    Managing radio spectrum resources is a crucial issue. The frequency assignment problem (FAP) basically aims to allocate, in an efficient manner, limited number of frequencies to communication links. Geographically close links, however, cause interference, which complicates the assignment, imposing frequency separation constraints. The FAP is closely related to the graph-coloring problem and it is an NP-hard problem. In this paper, we propose to incorporate the randomization into greedy and fa...

  20. Homework assignment and student achievement in OECD countries

    OpenAIRE

    Torberg Falch; Marte Rønning

    2011-01-01

    This paper analyzes the effect of assigning homework on student achievement using data from 16 OECD countries that participated in TIMSS 2007. The model exploits withinstudent variation in homework across subjects in a sample of primary school students who have the same teacher in two related subjects; mathematics and science. Unobserved teacher and student characteristics are thus conditioned out of the model and the identification rests on random relative homework assignment across the subj...

  1. Using graded questions to increase timely reading of assigned material

    OpenAIRE

    Uskul, Ayse K.; Eaton, J

    2005-01-01

    We assigned students in a personality psychology class graded long-answer questions in an attempt to increase their likelihood of reading assigned class material in a timely manner. We evaluated the effectiveness of this technique by examining exam scores and student evaluations. Students performed significantly better on the exam questions that were related to the topics covered by the long-answer questions than they did on exam questions related to other topics. Students also reported havin...

  2. Managing cost uncertainties in transportation and assignment problems

    OpenAIRE

    Arsham, H.; Adlakha, V.

    1998-01-01

    In a fast changing global market, a manager is concerned with cost uncertainties of the cost matrix in transportation problems (TP) and assignment problems (AP).A time lag between the development and application of the model could cause cost parameters to assume different values when an optimal assignment is implemented. The manager might wish to determine the responsiveness of the current optimal solution to such uncertainties. A desirable tool is to construct a perturbation set (PS) of cost...

  3. A delayed flow intersection model for dynamic traffic assignment

    OpenAIRE

    DURLIN, T; HENN, V

    2005-01-01

    Day-to-Day and Within-Day dynamics are classically observed in dynamic traffic assignment, but smaller ones due to traffic lights phases also occur. These micro variations induce flow fluctuations defined at a cycle time scale. Their precise knowledge is irrelevant in a dynamic traffic assignment context. We propose to integrate these micro dynamics into a new intersection model without stages in which their average effects must be taken into account, especially delay and flow restriction ge...

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

    Directory of Open Access Journals (Sweden)

    Lei Li

    Full Text Available 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.

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

    Science.gov (United States)

    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. PMID:26090849

  6. Membership Function Assignment for Elements of Single OWL Ontology

    OpenAIRE

    Verhodubs, Olegs

    2014-01-01

    This paper develops the idea of membership function assignment for OWL (Web Ontology Language) ontology elements in order to subsequently generate fuzzy rules from this ontology. The task of membership function assignment for OWL ontology elements had already been partially described, but this concerned the case, when several OWL ontologies of the same domain were available, and they were merged into a single ontology. The purpose of this paper is to present the way of membership function ass...

  7. Dynamic traffic assignment techniques for general road networks

    OpenAIRE

    Han, S.

    2000-01-01

    Dynamic traffic assignment is widely recognised as being more useful to evaluate traffic management measures than is static counterpart, as it allows us to analyse how congestion forms and dissipates in time-varying conditions. In this thesis, both deterministic and stochastic dynamic assignments are modelled with a proper link performance function, and solved with efficient solution algorithms so that they give rise to high quality solutions. A deterministic dynamic assignm...

  8. Teaching and Learning Data Visualization: Ideas and Assignments

    OpenAIRE

    Nolan, Deborah; Perrett, Jamis

    2015-01-01

    This article discusses how to make statistical graphics a more prominent element of the undergraduate statistics curricula. The focus is on several different types of assignments that exemplify how to incorporate graphics into a course in a pedagogically meaningful way. These assignments include having students deconstruct and reconstruct plots, copy masterful graphs, create one-minute visual revelations, convert tables into `pictures', and develop interactive visualizations with, e.g., the v...

  9. A parametric visualization software for the assignment problem

    Directory of Open Access Journals (Sweden)

    Papamanthou Charalampos

    2005-01-01

    Full Text Available In this paper we present a parametric visualization software used to assist the teaching of the Network Primal Simplex Algorithm for the assignment problem (AP. The assignment problem is a special case of the balanced transportation problem. The main functions of the algorithm and design techniques are also presented. Through this process, we aim to underline the importance and necessity of using such educational methods in order to improve the teaching of Computer Algorithms.

  10. Locomotive assignment problem with train precedence using genetic algorithm

    OpenAIRE

    Noori, Siamak; Ghannadpour, Seyed

    2012-01-01

    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...

  11. Using Open Data as a Material for Introductory Programming Assignments

    OpenAIRE

    Coughlan, Tim

    2015-01-01

    This case study explores why and how open data can be used as a material with which to produce engaging challenges for students as they are introduced to programming. Through describing the process of producing the assignments, and learner responses to them, we suggest that open data is a powerful material for designing learning activities because of its qualities of ease of access and authenticity. We conclude by outlining steps to take in devising and implementing open data-based assignments.

  12. Automated protein backbone assignment using the projection-decomposition approach

    International Nuclear Information System (INIS)

    Spectral projection experiments by NMR in conjunction with decomposition analysis have been previously introduced for the backbone assignment of proteins; various pulse sequences as well as the behaviour with low signal-to-noise or chemical shift degeneracy have been illustrated. As a guide for routine applications of this combined tool, we provide here a systematic analysis on different types of proteins using welldefined run-time parameters. As a second result of this study, the backbone assignment module SHABBA was extensively rewritten and improved. Calculations on ubiquitin yielded again fully correct and nearly complete backbone and CHβ assignments. For the 128 residue long azurin, missing assignments mostly affect Hα and Hβ. Among the remaining backbone (plus Cβ) nuclei 97.5% could be assigned with 1.0% differences to a reference. Finally, the new SHABBA algorithm was applied to projections recorded for a yeast histone protein domain at room temperature, where the protein is subject to partial unfolding: this leads to unobservable resonances (about a dozen missing signals in a normal 15N-HSQC) and extensive degeneracy among the resonances. From the clearly observable residues, 97.5% of the backbone and CHβresonances could be assigned, of which only 0.8 % showed differences to published shifts. An additional study on the protein MMP20, which exhibits spectral difficulties to an even larger extent, explores the limitations of the approach.

  13. Exploiting image registration for automated resonance assignment in NMR

    International Nuclear Information System (INIS)

    Analysis of protein NMR data involves the assignment of resonance peaks in a number of multidimensional data sets. To establish resonance assignment a three-dimensional search is used to match a pair of common variables, such as chemical shifts of the same spin system, in different NMR spectra. We show that by displaying the variables to be compared in two-dimensional plots the process can be simplified. Moreover, by utilizing a fast Fourier transform cross-correlation algorithm, more common to the field of image registration or pattern matching, we can automate this process. Here, we use sequential NMR backbone assignment as an example to show that the combination of correlation plots and segmented pattern matching establishes fast backbone assignment in fifteen proteins of varying sizes. For example, the 265-residue RalBP1 protein was 95.4 % correctly assigned in 10 s. The same concept can be applied to any multidimensional NMR data set where analysis comprises the comparison of two variables. This modular and robust approach offers high efficiency with excellent computational scalability and could be easily incorporated into existing assignment software

  14. A Bayesian Assignment Method for Ambiguous Bisulfite Short Reads.

    Directory of Open Access Journals (Sweden)

    Hong Tran

    Full Text Available DNA methylation is an epigenetic modification critical for normal development and diseases. The determination of genome-wide DNA methylation at single-nucleotide resolution is made possible by sequencing bisulfite treated DNA with next generation high-throughput sequencing. However, aligning bisulfite short reads to a reference genome remains challenging as only a limited proportion of them (around 50-70% can be aligned uniquely; a significant proportion, known as multireads, are mapped to multiple locations and thus discarded from downstream analyses, causing financial waste and biased methylation inference. To address this issue, we develop a Bayesian model that assigns multireads to their most likely locations based on the posterior probability derived from information hidden in uniquely aligned reads. Analyses of both simulated data and real hairpin bisulfite sequencing data show that our method can effectively assign approximately 70% of the multireads to their best locations with up to 90% accuracy, leading to a significant increase in the overall mapping efficiency. Moreover, the assignment model shows robust performance with low coverage depth, making it particularly attractive considering the prohibitive cost of bisulfite sequencing. Additionally, results show that longer reads help improve the performance of the assignment model. The assignment model is also robust to varying degrees of methylation and varying sequencing error rates. Finally, incorporating prior knowledge on mutation rate and context specific methylation level into the assignment model increases inference accuracy. The assignment model is implemented in the BAM-ABS package and freely available at https://github.com/zhanglabvt/BAM_ABS.

  15. RNA-PAIRS: RNA probabilistic assignment of imino resonance shifts

    Energy Technology Data Exchange (ETDEWEB)

    Bahrami, Arash; Clos, Lawrence J.; Markley, John L.; Butcher, Samuel E. [National Magnetic Resonance Facility at Madison (United States); Eghbalnia, Hamid R., E-mail: eghbalhd@uc.edu [University of Cincinnati, Department of Molecular and Cellular Physiology (United States)

    2012-04-15

    The significant biological role of RNA has further highlighted the need for improving the accuracy, efficiency and the reach of methods for investigating RNA structure and function. Nuclear magnetic resonance (NMR) spectroscopy is vital to furthering the goals of RNA structural biology because of its distinctive capabilities. However, the dispersion pattern in the NMR spectra of RNA makes automated resonance assignment, a key step in NMR investigation of biomolecules, remarkably challenging. Herein we present RNA Probabilistic Assignment of Imino Resonance Shifts (RNA-PAIRS), a method for the automated assignment of RNA imino resonances with synchronized verification and correction of predicted secondary structure. RNA-PAIRS represents an advance in modeling the assignment paradigm because it seeds the probabilistic network for assignment with experimental NMR data, and predicted RNA secondary structure, simultaneously and from the start. Subsequently, RNA-PAIRS sets in motion a dynamic network that reverberates between predictions and experimental evidence in order to reconcile and rectify resonance assignments and secondary structure information. The procedure is halted when assignments and base-parings are deemed to be most consistent with observed crosspeaks. The current implementation of RNA-PAIRS uses an initial peak list derived from proton-nitrogen heteronuclear multiple quantum correlation ({sup 1}H-{sup 15}N 2D HMQC) and proton-proton nuclear Overhauser enhancement spectroscopy ({sup 1}H-{sup 1}H 2D NOESY) experiments. We have evaluated the performance of RNA-PAIRS by using it to analyze NMR datasets from 26 previously studied RNAs, including a 111-nucleotide complex. For moderately sized RNA molecules, and over a range of comparatively complex structural motifs, the average assignment accuracy exceeds 90%, while the average base pair prediction accuracy exceeded 93%. RNA-PAIRS yielded accurate assignments and base pairings consistent with imino

  16. Compatibility of state assignments and pooling of information

    Science.gov (United States)

    Brun, Todd A.; Hsieh, Min-Hsiu; Perry, Christopher

    2015-07-01

    We say that two (or more) state assignments for one and the same quantum system are compatible if they could represent the assignments of observers with differing information about the system. A criterion for compatibility was proposed in [Phys. Rev. A 65, 032315 (2002), 10.1103/PhysRevA.65.032315]; however, this leaves unanswered the question of whether there are degrees of compatibility which could be represented by some quantitative measure, and whether there is a straightforward procedure whereby the observers can pool their information to arrive at a unique joint state assignment. We argue that such measures are only sensible given some assumption about what kind of information was used in making the state assignments in the first place, and that in general state assignments do not represent all of the information possessed by the observers. However, we examine one particular measure and show that it has a straightforward interpretation, assuming that the information was acquired from a particular type of measurement, and that in this case there is a natural rule for pooling information. We extend this measure to compatibility of states for k observers and show that the value is the solution to a semidefinite program. Similar compatibility measures can be defined for alternative notions of state compatibility, including post-Peierls and equal support compatibilities.

  17. An integer programming model for assigning students to elective courses

    Directory of Open Access Journals (Sweden)

    Ivo Beroš

    2015-10-01

    Full Text Available This paper deals with the problem of assigning students to elective courses according to their preferences. This process of assigning students to elective courses according to their preferences often places before academic institutions numerous obstacles, the most typical being a limited number of students who can be assigned to any particular class. Furthermore, due to financial or technical reasons, the maximum number of the elective courses is determined in advance, meaning that the institution decides which courses to conduct. Therefore, the expectation that all the students will be assigned to their first choice of courses is not realistic (perfect satisfaction. This paper presents an integer programming model that maximizes the total student satisfaction in line with a number of different constraints. The measure of student satisfaction is based on a student's order of preference according to the principle: the more a choice is met the higher the satisfaction. Following the basic model, several versions of the models are generated to cover possible real-life situations, while taking into consideration the manner student satisfaction is measured, as well as the preference of academic institution within set technical and financial constraints. The main contribution of the paper is introducing the concept of the minimal student satisfaction level that reduces the number of students dissatised with the courses to which they were assigned.

  18. Reflective practice: assessment of assignments in English for Specific Purposes

    Directory of Open Access Journals (Sweden)

    Galina Kavaliauskiené

    2007-10-01

    Full Text Available The construct alternative assessment has been widely used in higher education. It is often defined as any type of assessment of learners who provide a response to an assignment. The key features of alternative assessment are active participation of learners in self-evaluation of their performance, and the development of reflective thinking through reflective thinking (Schön, 1983. The success of alternative assessment in language teaching is predetermined by student’s performance and demonstrates learner’s language proficiency in contemporary communicative classrooms. This paper aims at researching the influence of students’ evaluations of various assignments for their linguistic development in English for Specific Purposes (ESP. The study uses learners’ assessment of different assignments and learners’ in-course and post-course written reflections on benefits to language mastery. Learners’ assignments included were contributions to portfolios (dossiers, such as essays and summaries, oral presentations, short impromptu talks, creative tasks, tests, and self-assessment notes (reflections on activities in learning ESP. Findings were obtained for two streams of the project participants. Results showed that self-assessment was beneficial for learners’ linguistic development. The context of learners’ reflections reveals that the attitudes to various assignments are affected by success or failure in students’ performance. Reflective practice might help teachers develop ways of dealing with previously identified difficulties and improve the quality of teaching.

  19. Conformational study and reassessment of the vibrational assignments for Norspermidine

    Science.gov (United States)

    Silva, T. M.; Fiuza, S. M.; Marques, M. P. M.; Batista de Carvalho, L. A. E.; Amado, A. M.

    2016-03-01

    The present study presents and discusses the conformational preferences of Norspermidine (NSpd). The effects of varying the dielectric constant on the conformational preferences are discussed, with a view to infer which conformation will correspond to the most stable in the pure condensed liquid phase. Within the same context, a set of NSpd-NH3 molecular adducts were simulated in order to determine the relevance of intermolecular hydrogen bonding on the overall stability and relative positioning of the respective vibrational frequencies. The calculations presently performed allowed a reassessment of the vibrational assignments for NSpd. A full assignment of the NSpd vibrational spectra is presented, with special emphasis being given to the vibrational modes that proved to be most affected by hydrogen bonding. The various inconsistencies of a prior study found in the literature were identified and rectified. An incorrect description of the molecular structure and/or electronic distribution will lead to erroneous forecasts of the vibrational frequencies, culminating in inaccurate assignments.

  20. A Stone Resource Assignment Model under the Fuzzy Environment

    Directory of Open Access Journals (Sweden)

    Liming Yao

    2012-01-01

    to tackle a stone resource assignment problem with the aim of decreasing dust and waste water emissions. On the upper level, the local government wants to assign a reasonable exploitation amount to each stone plant so as to minimize total emissions and maximize employment and economic profit. On the lower level, stone plants must reasonably assign stone resources to produce different stone products under the exploitation constraint. To deal with inherent uncertainties, the object functions and constraints are defuzzified using a possibility measure. A fuzzy simulation-based improved simulated annealing algorithm (FS-ISA is designed to search for the Pareto optimal solutions. Finally, a case study is presented to demonstrate the practicality and efficiency of the model. Results and a comparison analysis are presented to highlight the performance of the optimization method, which proves to be very efficient compared with other algorithms.

  1. Assigning on-ramp flows to maximize highway capacity

    Science.gov (United States)

    Wang, Qiao-Ming; Jiang, Rui; Sun, Xiao-Yan; Wang, Bing-Hong

    2009-09-01

    In this paper, we study the capacity of a highway with two on-ramps by using a cellular automata traffic flow model. We investigate how to improve the system capacity by assigning traffic flow to the two ramps. The system phase diagram is presented and different regions are classified. It is shown that in region I, in which both ramps are in free flow and the main road upstream of the ramps is in congestion, assigning a higher proportion of the demand to the upstream on-ramp could improve the overall flow, which is consistent with previous studies. This is explained through studying the spatiotemporal patterns and analytical investigations. In contrast, optimal assignment has not been observed in other regions. We point out that our result is robust and model independent under certain conditions.

  2. DNATCO: assignment of DNA conformers at dnatco.org.

    Science.gov (United States)

    Černý, Jiří; Božíková, Paulína; Schneider, Bohdan

    2016-07-01

    The web service DNATCO (dnatco.org) classifies local conformations of DNA molecules beyond their traditional sorting to A, B and Z DNA forms. DNATCO provides an interface to robust algorithms assigning conformation classes called NTC: to dinucleotides extracted from DNA-containing structures uploaded in PDB format version 3.1 or above. The assigned dinucleotide NTC: classes are further grouped into DNA structural alphabet NTA: , to the best of our knowledge the first DNA structural alphabet. The results are presented at two levels: in the form of user friendly visualization and analysis of the assignment, and in the form of a downloadable, more detailed table for further analysis offline. The website is free and open to all users and there is no login requirement. PMID:27150812

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

    Science.gov (United States)

    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. PMID:25636917

  4. The ICAP (Interactive Course Assignment Pages Publishing System

    Directory of Open Access Journals (Sweden)

    Kim Griggs

    2008-03-01

    Full Text Available The ICAP publishing system is an open source custom content management system that enables librarians to easily and quickly create and manage library help pages for course assignments (ICAPs, without requiring knowledge of HTML or other web technologies. The system's unique features include an emphasis on collaboration and content reuse and an easy-to-use interface that includes in-line help, simple forms and drag and drop functionality. The system generates dynamic, attractive course assignment pages that blend Web 2.0 features with traditional library resources, and makes the pages easier to find by providing a central web page for the course assignment pages. As of December 2007, the code is available as free, open-source software under the GNU General Public License.

  5. Complexity and Approximation of a Geometric Local Robot Assignment Problem

    Science.gov (United States)

    Bonorden, Olaf; Degener, Bastian; Kempkes, Barbara; Pietrzyk, Peter

    We introduce a geometric multi-robot assignment problem. Robots positioned in a Euclidean space have to be assigned to treasures in such a way that their joint strength is sufficient to unearth a treasure with a given weight. The robots have a limited range and thus can only be assigned to treasures in their proximity. The objective is to unearth as many treasures as possible. We investigate the complexity of several variants of this problem and show whether they are in {mathcal P} or are mathcal{ NP}-complete. Furthermore, we provide a distributed and local constant-factor approximation algorithm using constant-factor resource augmentation for the two-dimensional setting with {mathcal O}(log^*n) communication rounds.

  6. Task Assignment Heuristics for Parallel and Distributed CFD Applications

    Science.gov (United States)

    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.

  7. Combined automated NOE assignment and structure calculation with CYANA

    Energy Technology Data Exchange (ETDEWEB)

    Güntert, Peter, E-mail: guentert@em.uni-frankfurt.de; Buchner, Lena [Goethe University Frankfurt am Main, Center for Biomolecular Magnetic Resonance, Institute of Biophysical Chemistry (Germany)

    2015-08-15

    The automated assignment of NOESY cross peaks has become a fundamental technique for NMR protein structure analysis. A widely used algorithm for this purpose is implemented in the program CYANA. It has been used for a large number of structure determinations of proteins in solution but was so far not described in full detail. In this paper we present a complete description of the CYANA implementation of automated NOESY assignment, which differs extensively from its predecessor CANDID by the use of a consistent probabilistic treatment, and we discuss its performance in the second round of the critical assessment of structure determination by NMR.

  8. Probabilistic validation of protein NMR chemical shift assignments

    International Nuclear Information System (INIS)

    Data validation plays an important role in ensuring the reliability and reproducibility of studies. NMR investigations of the functional properties, dynamics, chemical kinetics, and structures of proteins depend critically on the correctness of chemical shift assignments. We present a novel probabilistic method named ARECA for validating chemical shift assignments that relies on the nuclear Overhauser effect data. ARECA has been evaluated through its application to 26 case studies and has been shown to be complementary to, and usually more reliable than, approaches based on chemical shift databases. ARECA is available online at http://areca.nmrfam.wisc.edu/ http://areca.nmrfam.wisc.edu/

  9. Probabilistic validation of protein NMR chemical shift assignments

    Energy Technology Data Exchange (ETDEWEB)

    Dashti, Hesam [University of Wisconsin-Madison, Graduate Program in Biophysics, Biochemistry Department (United States); Tonelli, Marco; Lee, Woonghee; Westler, William M.; Cornilescu, Gabriel [University of Wisconsin-Madison, Biochemistry Department, National Magnetic Resonance Facility at Madison (United States); Ulrich, Eldon L. [University of Wisconsin-Madison, BioMagResBank, Biochemistry Department (United States); Markley, John L., E-mail: markley@nmrfam.wisc.edu, E-mail: jmarkley@wisc.edu [University of Wisconsin-Madison, Biochemistry Department, National Magnetic Resonance Facility at Madison (United States)

    2016-01-15

    Data validation plays an important role in ensuring the reliability and reproducibility of studies. NMR investigations of the functional properties, dynamics, chemical kinetics, and structures of proteins depend critically on the correctness of chemical shift assignments. We present a novel probabilistic method named ARECA for validating chemical shift assignments that relies on the nuclear Overhauser effect data. ARECA has been evaluated through its application to 26 case studies and has been shown to be complementary to, and usually more reliable than, approaches based on chemical shift databases. ARECA is available online at http://areca.nmrfam.wisc.edu/ http://areca.nmrfam.wisc.edu/.

  10. A tracked approach for automated NMR assignments in proteins (TATAPRO)

    International Nuclear Information System (INIS)

    A novel automated approach for the sequence specific NMR assignments of 1HN, 13Cα, 13Cβ, 13C'/1Hα and 15N spins in proteins, using triple resonance experimental data, is presented. The algorithm, TATAPRO (Tracked AuTomated Assignments in Proteins) utilizes the protein primary sequence and peak lists from a set of triple resonance spectra which correlate 1HN and 15N chemical shifts with those of 13Cα, 13Cβ and 13C'/1Hα. The information derived from such correlations is used to create a 'masterlist' consisting of all possible sets of 1HNi, 15Ni, 13Cαi, 13Cβi, 13C'i/1Hαi, 13Cαi-1, 13Cβi-1 and 13C'i-1/ 1Hαi-1 chemical shifts. On the basis of an extensive statistical analysis of 13Cα and 13Cβ chemical shift data of proteins derived from the BioMagResBank (BMRB), it is shown that the 20 amino acid residues can be grouped into eight distinct categories, each of which is assigned a unique two-digit code. Such a code is used to tag individual sets of chemical shifts in the masterlist and also to translate the protein primary sequence into an array called ppsarray. The program then uses the masterlist to search for neighbouring partners of a given amino acid residue along the polypeptide chain and sequentially assigns a maximum possible stretch of residues on either side. While doing so, each assigned residue is tracked in an array called assigarray, with the two-digit code assigned earlier. The assigarray is then mapped onto the ppsarray for sequence specific resonance assignment. The program has been tested using experimental data on a calcium binding protein from Entamoeba histolytica (Eh-CaBP, 15 kDa) having substantial internal sequence homology and using published data on four other proteins in the molecular weight range of 18-42 kDa. In all the cases, nearly complete sequence specific resonance assignments (> 95%) are obtained. Furthermore, the reliability of the program has been tested by deleting sets of chemical shifts randomly from the masterlist

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

    Directory of Open Access Journals (Sweden)

    Enrique de la Hoz

    2015-11-01

    Full Text Available 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.

  12. Combined automated NOE assignment and structure calculation with CYANA

    International Nuclear Information System (INIS)

    The automated assignment of NOESY cross peaks has become a fundamental technique for NMR protein structure analysis. A widely used algorithm for this purpose is implemented in the program CYANA. It has been used for a large number of structure determinations of proteins in solution but was so far not described in full detail. In this paper we present a complete description of the CYANA implementation of automated NOESY assignment, which differs extensively from its predecessor CANDID by the use of a consistent probabilistic treatment, and we discuss its performance in the second round of the critical assessment of structure determination by NMR

  13. 77 FR 43127 - Further Amendment to Memorandum Describing Authority and Assigned Responsibilities of the General...

    Science.gov (United States)

    2012-07-23

    ... BOARD Further Amendment to Memorandum Describing Authority and Assigned Responsibilities of the General... Relations Board is amending the memorandum describing the authority and assigned responsibilities of the... amendment to Board memorandum describing the authority and assigned responsibilities of the General...

  14. Hierarchical method of task assignment for multiple cooperating UAV teams

    Institute of Scientific and Technical Information of China (English)

    Xiaoxuan Hu; Huawei Ma; Qingsong Ye; He Luo

    2015-01-01

    The problem of task assignment for multiple cooperat-ing unmanned aerial vehicle (UAV) teams is considered. Multiple UAVs forming several smal teams are needed to perform attack tasks on a set of predetermined ground targets. A hierarchical task assignment method is presented to address the problem. It breaks the original problem down to three levels of sub-problems: tar-get clustering, cluster al ocation and target assignment. The first two sub-problems are central y solved by using clustering algo-rithms and integer linear programming, respectively, and the third sub-problem is solved in a distributed and paral el manner, using a mixed integer linear programming model and an improved ant colony algorithm. The proposed hierarchical method can reduce the computational complexity of the task assignment problem con-siderably, especial y when the number of tasks or the number of UAVs is large. Experimental results show that this method is feasi-ble and more efficient than non-hierarchical methods.

  15. The Complexity of Approximately Counting Stable Roommate Assignments

    CERN Document Server

    Chebolu, Prasad; Martin, Russell

    2010-01-01

    We investigate the complexity of approximately counting stable roommate assignments in two models: (i) the $k$-attribute model, in which the preference lists are determined by dot products of "preference vectors" with "attribute vectors" and (ii) the $k$-Euclidean model, in which the preference lists are determined by the closeness of the "positions" of the people to their "preferred positions". Exactly counting the number of assignments is #P-complete, since Irving and Leather demonstrated #P-completeness for the special case of the stable marriage problem. We show that counting the number of stable roommate assignments in the $k$-attribute model ($k \\geq 4$) and the $3$-Euclidean model($k \\geq 3$) is interreducible, in an approximation-preserving sense, with counting independent sets (of all sizes) (#IS) in a graph, or counting the number of satisfying assignments of a Boolean formula (#SAT). This means that there can be no FPRAS for any of these problems unless NP=RP. As a consequence, we infer that there ...

  16. Single Assignment C (SAC): High Productivity meets High Performance

    NARCIS (Netherlands)

    C. Grelck

    2012-01-01

    We present the ins and outs of the purely functional, data parallel programming language SaC (Single Assignment C). SaC defines state- and side-effect-free semantics on top of a syntax resembling that of imperative languages like C/C++/C# or Java: functional programming with curly brackets. In contr

  17. Using Clouds for MapReduce Measurement Assignments

    Science.gov (United States)

    Rabkin, Ariel; Reiss, Charles; Katz, Randy; Patterson, David

    2013-01-01

    We describe our experiences teaching MapReduce in a large undergraduate lecture course using public cloud services and the standard Hadoop API. Using the standard API, students directly experienced the quality of industrial big-data tools. Using the cloud, every student could carry out scalability benchmarking assignments on realistic hardware,…

  18. 31 CFR 306.43 - Voidance of assignments.

    Science.gov (United States)

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Voidance of assignments. 306.43 Section 306.43 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) FISCAL... affidavit or affidavits should be submitted for consideration explaining why a disclaimer cannot be...

  19. Wavelength and fiber assignment problems on avionic networks

    DEFF Research Database (Denmark)

    Zhang, Jiang; An, Yi; Berger, Michael Stübert; Clausen, Anders

    This paper solves the wavelength and fiber assignment problems with systems' isolation requirements on the avionic ring networks. The experiment results give a general glace of the numbers of the wavelengths and fibers are required under certain scale of networks. At the beginning of increasing...

  20. Semiclassical Assignment of the Vibrational Spectrum of N2O

    NARCIS (Netherlands)

    Waalkens, Holger; Jung, Christof; Taylor, Howard S.

    2002-01-01

    The vibrational spectrum of N2O as given by an effective spectroscopic Hamiltonian based on the existence of a superpolyad number is analyzed and assigned in terms of classical motions. The effective Hamiltonian includes a large number of resonances of which only one is dominant for low and intermed

  1. Three results on frequency assignment in linear cellular networks

    Czech Academy of Sciences Publication Activity Database

    Chrobak, M.; Sgall, Jiří

    2010-01-01

    Roč. 411, č. 1 (2010), s. 131-137. ISSN 0304-3975 R&D Projects: GA MŠk(CZ) 1M0545; GA AV ČR IAA100190902 Keywords : frequency assignment * approximation algorithms * online algorithms Subject RIV: BA - General Mathematics Impact factor: 0.838, year: 2010 http://www.sciencedirect.com/science/article/pii/S0304397509006574

  2. A Writing Assignment/A Way of Life.

    Science.gov (United States)

    Martin, Bill

    2003-01-01

    Explains a writing assignment called "occasional paper," a brief written reflection that is read aloud and discussed but not turned in. Notes that it is important that these papers be easy to write. Contends that since adolescents experience nearly everything as personal, the occasional paper offers them an entry into thinking that is abstract and…

  3. Bargaining Theory over Opportunity Assignments and the Egalitarian Solution

    OpenAIRE

    Xu, Yongsheng; Yoshihara, Naoki

    2009-01-01

    This paper discusses issues of axiomatic bargaining problems over opportunity assignments. The fair arbitrator uses the principle of "equal opportunity" for all players to make the recommendation on resource allocations. A framework in such a context is developed and the egalitarian solution to standard bargaining problems is reformulated and axiomatically characterized.

  4. A new heuristic for the quadratic assignment problem

    OpenAIRE

    Zvi Drezner

    2002-01-01

    We propose a new heuristic for the solution of the quadratic assignment problem. The heuristic combines ideas from tabu search and genetic algorithms. Run times are very short compared with other heuristic procedures. The heuristic performed very well on a set of test problems.

  5. Understanding and Supporting the Career Implications of International Assignments

    Science.gov (United States)

    Collings, David G.; Doherty, Noeleen; Luethy, Madeleine; Osborn, Derek

    2011-01-01

    International assignments represent an important form of migration in the global economy. In contrast to most other migrants, international assignees enjoy a relatively privileged position in the labor market. Authored by a diverse team of academics and practitioners, this paper draws on insights from empirical research and unpublished examples…

  6. 45 CFR 302.50 - Assignment of rights to support.

    Science.gov (United States)

    2010-10-01

    ... 45 Public Welfare 2 2010-10-01 2010-10-01 false Assignment of rights to support. 302.50 Section 302.50 Public Welfare Regulations Relating to Public Welfare OFFICE OF CHILD SUPPORT ENFORCEMENT (CHILD SUPPORT ENFORCEMENT PROGRAM), ADMINISTRATION FOR CHILDREN AND FAMILIES, DEPARTMENT OF HEALTH AND HUMAN SERVICES STATE PLAN REQUIREMENTS §...

  7. An optimal query assignment for wireless sensor networks

    NARCIS (Netherlands)

    Mitici, Mihaela; Onderwater, Martijn; Graaf, de Maurits; Ommeren, van Jan-Kees; Dijk, van Nico; Goseling, Jasper

    2012-01-01

    With the increased use of large-scale real-time embedded sensor networks, new control mechanisms are needed to avoid congestion and meet required Quality of Service (QoS) levels. In this paper, we propose a Markov Decision Problem (MDP) to prescribe an optimal query assignment strategy that achieves

  8. A Competitive and Experiential Assignment in Search Engine Optimization Strategy

    Science.gov (United States)

    Clarke, Theresa B.; Clarke, Irvine, III

    2014-01-01

    Despite an increase in ad spending and demand for employees with expertise in search engine optimization (SEO), methods for teaching this important marketing strategy have received little coverage in the literature. Using Bloom's cognitive goals hierarchy as a framework, this experiential assignment provides a process for educators who may be…

  9. Concept Maps as Cognitive Visualizations of Writing Assignments

    Science.gov (United States)

    Villalon, Jorge; Calvo, Rafael A.

    2011-01-01

    Writing assignments are ubiquitous in higher education. Writing develops not only communication skills, but also higher-level cognitive processes that facilitate deep learning. Cognitive visualizations, such as concept maps, can also be used as part of learning activities including as a form of scaffolding, or to trigger reflection by making…

  10. A Randomized Experiment Comparing Random and Cutoff-Based Assignment

    Science.gov (United States)

    Shadish, William R.; Galindo, Rodolfo; Wong, Vivian C.; Steiner, Peter M.; Cook, Thomas D.

    2011-01-01

    In this article, we review past studies comparing randomized experiments to regression discontinuity designs, mostly finding similar results, but with significant exceptions. The latter might be due to potential confounds of study characteristics with assignment method or with failure to estimate the same parameter over methods. In this study, we…

  11. Developing Team Skills through a Collaborative Writing Assignment

    Science.gov (United States)

    Thomas, Theda Ann

    2014-01-01

    Employers want students who are able to work effectively as members of a team, and expect universities to develop this ability in their graduates. This paper proposes a framework for a collaborative writing assignment that specifically develops students' ability to work in teams. The framework has been tested using two iterations of an action…

  12. An Improved Approach to Solution of the Faculty Assignment Problem.

    Science.gov (United States)

    Yang, Chin W.

    1989-01-01

    Examined is the problem of assigning faculty members to teach various courses in an accounting department. Based on selected evaluation information, a zero-one integer programing model was implemented. This approach utilizes readily available data and takes into consideration the learning curve phenomenon, various competing needs, and…

  13. Optimization of Load Assignment to Boilers in Industrial Boiler Plants

    Institute of Scientific and Technical Information of China (English)

    CAO Jia-cong; QIU Guang; CAO Shuang-hua; LIU Feng-qiang

    2004-01-01

    Along with the increasing importance of sustainable energy, the optimization of load assignment to boilers in an industrial boiler plant becomes one of the major projects for the optimal operation of boiler plants. Optimal load assignment for power systems has been a long-lasting subject, while it is quite new for industrial boiler plants. The existing methods of optimal load assignment for boiler plants are explained and analyzed briefly in the paper. They all need the fuel cost curves of boilers. Thanks to some special features of the curves for industrial boilers, a new model referred to as minimized departure model (MDM) of optimization of load assignment for boiler plants is developed and proposed in the paper. It merely relies upon the accessible data of two typical working conditions to build the model, viz. the working conditions with the highest efficiency of a boiler and with no-load. Explanation of the algorithm of computer program is given, and effort is made so as to determine in advance how many and which boilers are going to work. Comparison between the results using MDM and the results reported in references is carried out, which proves that MDM is preferable and practicable.

  14. Assigning and visualizing germline genes in antibody repertoires.

    Science.gov (United States)

    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. PMID:26194754

  15. Comparison of Categorical Assignments of the BSRI and the PAQ.

    Science.gov (United States)

    Gaa, John P.; Liberman, Dov

    The degree of agreement between the Bem Sex Role Inventory (BSRI) and the Personality Attributes Questionnaire (PAQ) in assigning sex role categories was investigated by administering both instruments to undergraduate education majors. As a result of scoring, subjects were classified as androgynous, masculine, feminine, or undifferentiated. It was…

  16. 42 CFR 435.610 - Assignment of rights to benefits.

    Science.gov (United States)

    2010-10-01

    ... paternity and in obtaining medical support and payments, unless the individual establishes good cause for not cooperating, and except for individuals described in section 1902 (1)(1)(A) of the Act (poverty... cause for not cooperating. (b) The requirements for assignment of rights must be applied uniformly...

  17. 15 CFR 2011.208 - Paperwork Reduction Act assigned number.

    Science.gov (United States)

    2010-01-01

    ... 15 Commerce and Foreign Trade 3 2010-01-01 2010-01-01 false Paperwork Reduction Act assigned number. 2011.208 Section 2011.208 Commerce and Foreign Trade Regulations Relating to Foreign Trade Agreements OFFICE OF THE UNITED STATES TRADE REPRESENTATIVE ALLOCATION OF TARIFF-RATE QUOTA ON IMPORTED SUGARS, SYRUPS AND MOLASSES Specialty Sugar...

  18. PRECONDITIONS OF ORIGIN, ESSENCE AND ASSIGNMENT OF STRATEGIC MANAGERIAL ACCOUNTING

    OpenAIRE

    Boiko, I.

    2010-01-01

    The article is devoted to the research of preconditions and necessity of creation strategic managerial accounting in the accounting system of enterprise. There are investigated economic essence and assignment of strategic managerial accounting and substantiated its importance for making strategic decisions on an enterprise.

  19. 20 CFR 422.607 - Limited reopening of assignments.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 2 2010-04-01 2010-04-01 false Limited reopening of assignments. 422.607 Section 422.607 Employees' Benefits SOCIAL SECURITY ADMINISTRATION ORGANIZATION AND PROCEDURES Administrative Review Process Under the Coal Industry Retiree Health Benefit Act of 1992 § 422.607...

  20. Sources of Information for Stress Assignment in Reading Greek

    Science.gov (United States)

    Protopapas, Athanassios; Gerakaki, Svetlana; Alexandri, Stella

    2007-01-01

    To assign lexical stress when reading, the Greek reader can potentially rely on lexical information (knowledge of the word), visual-orthographic information (processing of the written diacritic), or a default metrical strategy (penultimate stress pattern). Previous studies with secondary education children have shown strong lexical effects on…

  1. Design of multivariable feedback control systems via spectral assignment

    Science.gov (United States)

    Mielke, R. R.; Tung, L. J.; Marefat, M.

    1983-01-01

    The applicability of spectral assignment techniques to the design of multivariable feedback control systems was investigated. A fractional representation design procedure for unstable plants is presented and illustrated with an example. A computer aided design software package implementing eigenvalue/eigenvector design procedures is described. A design example which illustrates the use of the program is explained.

  2. Augmenting superpopulation capture-recapture models with population assignment data

    Science.gov (United States)

    Wen, Zhi; Pollock, Kenneth; Nichols, James; Waser, Peter

    2011-01-01

    Ecologists applying capture-recapture models to animal populations sometimes have access to additional information about individuals' populations of origin (e.g., information about genetics, stable isotopes, etc.). Tests that assign an individual's genotype to its most likely source population are increasingly used. Here we show how to augment a superpopulation capture-recapture model with such information. We consider a single superpopulation model without age structure, and split each entry probability into separate components due to births in situ and immigration. We show that it is possible to estimate these two probabilities separately. We first consider the case of perfect information about population of origin, where we can distinguish individuals born in situ from immigrants with certainty. Then we consider the more realistic case of imperfect information, where we use genetic or other information to assign probabilities to each individual's origin as in situ or outside the population. We use a resampling approach to impute the true population of origin from imperfect assignment information. The integration of data on population of origin with capture-recapture data allows us to determine the contributions of immigration and in situ reproduction to the growth of the population, an issue of importance to ecologists. We illustrate our new models with capture-recapture and genetic assignment data from a population of banner-tailed kangaroo rats Dipodomys spectabilis in Arizona.

  3. Undergraduates Improve upon Published Crystal Structure in Class Assignment

    Science.gov (United States)

    Horowitz, Scott; Koldewey, Philipp; Bardwell, James C.

    2014-01-01

    Recently, 57 undergraduate students at the University of Michigan were assigned the task of solving a crystal structure, given only the electron density map of a 1.3 Å crystal structure from the electron density server, and the position of the N-terminal amino acid. To test their knowledge of amino acid chemistry, the students were not given the…

  4. An efficient and impartial online algorithm for kidney assignment network

    Institute of Scientific and Technical Information of China (English)

    Yu-jue Wang; Jia-yin Wang; Pei-jia Tang; Yi-tuo Ye

    2009-01-01

    An online algorithm balancing the efficiency and equity principles is proposed for the kidney resource assignment when only the current patient and resource information is known to the assignment network. In the algorithm, the assignment is made according to the priority, which is calculated according to the efficiency principle and the equity principle. The efficiency principle is concerned with the post-transplantation- immunity spending caused by the possible post-operation immunity rejection and patient's mental depression due to the HLA mismatch. The equity principle is concerned with three other factors, namely the treatment spending incurred starting from the day of registering with the kidney assignment network, the post-operation immunity spending and the negative effects of waiting for kidney resources on the clinical efficiency. The competitive analysis conducted through computer simulation indicates that the efficiency competitive ratio is between 6. 29 and 10. 43 and the equity competitive ratio is between 1. 31 and 5. 21, demonstrating that the online algorithm is of great significance in application.

  5. 37 CFR 1.46 - Assigned inventions and patents.

    Science.gov (United States)

    2010-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2010-07-01 2010-07-01 false Assigned inventions and patents. 1.46 Section 1.46 Patents, Trademarks, and Copyrights UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE GENERAL RULES OF PRACTICE IN PATENT CASES National Processing Provisions Who May...

  6. Integrating Video Documentary into the Classroom: A Community Assessment Assignment

    Science.gov (United States)

    Levinson, Samantha G.; Caldwell, Keith; Petracchi, Helen E.; Wexler, Sandra; Engel, Rafael

    2016-01-01

    Community assessment is a strategy commonly taught to social work students to identify a community's strengths and challenges. This article describes the value of using video documentary as part of a community assessment assignment. We identify the advantages of using video documentary in the assessment process and the reporting of findings. We…

  7. Assigning Main Orientation to an EOH Descriptor on Multispectral Images

    Directory of Open Access Journals (Sweden)

    Yong Li

    2015-07-01

    Full Text Available This paper proposes an approach to compute an EOH (edge-oriented histogram descriptor with main orientation. EOH has a better matching ability than SIFT (scale-invariant feature transform on multispectral images, but does not assign a main orientation to keypoints. Alternatively, it tends to assign the same main orientation to every keypoint, e.g., zero degrees. This limits EOH to matching keypoints between images of translation misalignment only. Observing this limitation, we propose assigning to keypoints the main orientation that is computed with PIIFD (partial intensity invariant feature descriptor. In the proposed method, SIFT keypoints are detected from images as the extrema of difference of Gaussians, and every keypoint is assigned to the main orientation computed with PIIFD. Then, EOH is computed for every keypoint with respect to its main orientation. In addition, an implementation variant is proposed for fast computation of the EOH descriptor. Experimental results show that the proposed approach performs more robustly than the original EOH on image pairs that have a rotation misalignment.

  8. On Nature's Strategy for Assigning Genetic Code Multiplicity.

    Science.gov (United States)

    Gardini, Simone; Cheli, Sara; Baroni, Silvia; Di Lascio, Gabriele; Mangiavacchi, Guido; Micheletti, Nicholas; Monaco, Carmen Luigia; Savini, Lorenzo; Alocci, Davide; Mangani, Stefano; Niccolai, Neri

    2016-01-01

    Genetic code redundancy would yield, on the average, the assignment of three codons for each of the natural amino acids. The fact that this number is observed only for incorporating Ile and to stop RNA translation still waits for an overall explanation. Through a Structural Bioinformatics approach, the wealth of information stored in the Protein Data Bank has been used here to look for unambiguous clues to decipher the rationale of standard genetic code (SGC) in assigning from one to six different codons for amino acid translation. Leu and Arg, both protected from translational errors by six codons, offer the clearest clue by appearing as the most abundant amino acids in protein-protein and protein-nucleic acid interfaces. Other SGC hidden messages have been sought by analyzing, in a protein structure framework, the roles of over- and under-protected amino acids. PMID:26849571

  9. On Nature’s Strategy for Assigning Genetic Code Multiplicity

    Science.gov (United States)

    Gardini, Simone; Cheli, Sara; Baroni, Silvia; Di Lascio, Gabriele; Mangiavacchi, Guido; Micheletti, Nicholas; Monaco, Carmen Luigia; Savini, Lorenzo; Alocci, Davide; Mangani, Stefano; Niccolai, Neri

    2016-01-01

    Genetic code redundancy would yield, on the average, the assignment of three codons for each of the natural amino acids. The fact that this number is observed only for incorporating Ile and to stop RNA translation still waits for an overall explanation. Through a Structural Bioinformatics approach, the wealth of information stored in the Protein Data Bank has been used here to look for unambiguous clues to decipher the rationale of standard genetic code (SGC) in assigning from one to six different codons for amino acid translation. Leu and Arg, both protected from translational errors by six codons, offer the clearest clue by appearing as the most abundant amino acids in protein-protein and protein-nucleic acid interfaces. Other SGC hidden messages have been sought by analyzing, in a protein structure framework, the roles of over- and under-protected amino acids. PMID:26849571

  10. The use of meta-heuristics for airport gate assignment

    DEFF Research Database (Denmark)

    Cheng, Chun-Hung; Ho, Sin C.; Kwan, Cheuk-Lam

    2012-01-01

    proposed to generate good solutions within a reasonable timeframe. In this work, we attempt to assess the performance of three meta-heuristics, namely, genetic algorithm (GA), tabu search (TS), simulated annealing (SA) and a hybrid approach based on SA and TS. Flight data from Incheon International Airport......Improper assignment of gates may result in flight delays, inefficient use of the resource, customer’s dissatisfaction. A typical metropolitan airport handles hundreds of flights a day. Solving the gate assignment problem (GAP) to optimality is often impractical. Meta-heuristics have recently been...... are collected to carry out the computational comparison. Although the literature has documented these algorithms, this work may be a first attempt to evaluate their performance using a set of realistic flight data....

  11. Equilibrium Assignment Model with Uncertainties in Traffic Demands

    Directory of Open Access Journals (Sweden)

    Aiwu Kuang

    2013-01-01

    Full Text Available In this study, we present an equilibrium traffic assignment model considering uncertainties in traffic demands. The link and route travel time distributions are derived based on the assumption that OD traffic demand follows a log-normal distribution. We postulate that travelers can acquire the variability of route travel times from past experiences and factor such variability into their route choice considerations in the form of mean route travel time. Furthermore, all travelers want to minimize their mean route travel times. We formulate the assignment problem as a variational inequality, which can be solved by a route-based heuristic solution algorithm. Some numerical studies on a small test road network are carried out to validate the proposed model and algorithm, at the same time, some reasonable results are obtained.

  12. Computational Assignment of Chemical Shifts for Protein Residues

    CERN Document Server

    Bratholm, Lars A

    2013-01-01

    Fast and accurate protein structure prediction is one of the major challenges in structural biology, biotechnology and molecular biomedicine. These fields require 3D protein structures for rational design of proteins with improved or novel properties. X-ray crystallography is the most common approach even with its low success rate, but lately NMR based approaches have gained popularity. The general approach involves a set of distance restraints used to guide a structure prediction, but simple NMR triple-resonance experiments often provide enough structural information to predict the structure of small proteins. Previous protein folding simulations that have utilised experimental data have weighted the experimental data and physical force field terms more or less arbitrarily, and the method is thus not generally applicable to new proteins. Furthermore a complete and near error-free assignment of chemical shifts obtained by the NMR experiments is needed, due to the static, or deterministic, assignment. In this ...

  13. Pole assignment for stochastic systems with unknown coefficients

    Institute of Scientific and Technical Information of China (English)

    陈翰馥[1; 曹希仁[2

    2000-01-01

    This paper solves the exact pole assignment problem for the single-input stochastic systems with unknown coefficients under the controllability assumption which is necessary and sufficient for the arbitrary pole assignment for systems with known coefficients. The system noise is required to be mutually independent with zero mean and bounded second moment. Two approaches to solving the problem are proposed: One is the iterative learning approach which can be applied when the state at a fixed time can be repeatedly observed with different feedback gains; the other is the adaptive control approach which works when the trajectories satisfy a nondegeneracy condition. Both methods are essentially based on stochastic approximation, and the feedback gains are recursively given without invoking the certainty-equivalency-principle.

  14. Mapping Learning Outcomes and Assignment Tasks for SPIDER Activities

    Directory of Open Access Journals (Sweden)

    Lyn Brodie

    2011-05-01

    Full Text Available Modern engineering programs have to address rapidly changing technical content and have to enable students to develop transferable skills such as critical evaluation, communication skills and lifelong learning. This paper introduces a combined learning and assessment activity that provides students with opportunities to develop and practice their soft skills, but also extends their theoretical knowledge base. Key tasks included self directed inquiry, oral and written communication as well as peer assessment. To facilitate the SPIDER activities (Select, Prepare and Investigate, Discuss, Evaluate, Reflect, a software tool has been implemented in the learning management system Moodle. Evidence shows increased student engagement and better learning outcomes for both transferable as well as technical skills. The study focuses on generalising the relationship between learning outcomes and assignment tasks as well as activities that drive these tasks. Trail results inform the approach. Staff evaluations and their views of assignments and intended learning outcomes also supported this analysis.

  15. Method for assigning sites to projected generic nuclear power plants

    International Nuclear Information System (INIS)

    Pacific Northwest Laboratory developed a method for forecasting potential locations and startup sequences of nuclear power plants that will be required in the future but have not yet been specifically identified by electric utilities. Use of the method results in numerical ratings for potential nuclear power plant sites located in each of the 10 federal energy regions. The rating for each potential site is obtained from numerical factors assigned to each of 5 primary siting characteristics: (1) cooling water availability, (2) site land area, (3) power transmission land area, (4) proximity to metropolitan areas, and (5) utility plans for the site. The sequence of plant startups in each federal energy region is obtained by use of the numerical ratings and the forecasts of generic nuclear power plant startups obtained from the EIA Middle Case electricity forecast. Sites are assigned to generic plants in chronological order according to startup date

  16. Block-decoupling vibration control using eigenstructure assignment

    Science.gov (United States)

    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.

  17. Confirmed assignments of isomeric dimethylbenzyl radicals generated by corona discharge.

    Science.gov (United States)

    Yoon, Young Wook; Lee, Sang Kuk

    2011-12-01

    The controversial vibronic assignments of isomeric dimethylbenzyl radicals were clearly resolved by using different precursors. By employing corresponding dimethylbenzyl chlorides as precursors, we identified the origins of the vibronic bands of the dimethylbenzyl radicals generated by corona discharge of 1,2,4-trimethylbenzene. From the analysis of the spectra observed from the dimethylbenzyl chlorides in a corona excited supersonic expansion, we revised previous assignments of the 3,4-, 2,4-, and 2,5-dimethylbenzyl radicals. 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 1,2,4-trimethylbenzene. PMID:22149790

  18. A framework for assessing learning assistants' reflective writing assignments

    Science.gov (United States)

    Cochran, Geraldine L.; Brookes, David T.; Kramer, Laird H.

    2013-01-01

    At Florida International University we have implemented a learning assistant (LA) program based on the Colorado Learning Assistant Model. [1] As a part of this program, students take a course on science and mathematics education theory and practice in which they are required to submit written reflections. Past anecdotal evidence suggests that students in the LAP at Florida International University are using these writing assignments to reflect on their teaching experiences. The purpose of this study was to a) determine if the writing assignments submitted give evidence that our students are engaging in reflection and b) determine if our students are engaging in deep levels of reflection. In this investigation, we relied on a rubric based on Hatton and Smith's (1995) [2] "Criteria for the Recognition of Evidence for Different Types of Reflective Writing." In this paper, we document a) a system for characterizing student reflections and b) how we give them feedback.

  19. Method for assigning sites to projected generic nuclear power plants

    Energy Technology Data Exchange (ETDEWEB)

    Holter, G.M.; Purcell, W.L.; Shutz, M.E.; Young, J.R.

    1986-07-01

    Pacific Northwest Laboratory developed a method for forecasting potential locations and startup sequences of nuclear power plants that will be required in the future but have not yet been specifically identified by electric utilities. Use of the method results in numerical ratings for potential nuclear power plant sites located in each of the 10 federal energy regions. The rating for each potential site is obtained from numerical factors assigned to each of 5 primary siting characteristics: (1) cooling water availability, (2) site land area, (3) power transmission land area, (4) proximity to metropolitan areas, and (5) utility plans for the site. The sequence of plant startups in each federal energy region is obtained by use of the numerical ratings and the forecasts of generic nuclear power plant startups obtained from the EIA Middle Case electricity forecast. Sites are assigned to generic plants in chronological order according to startup date.

  20. A tracked approach for automated NMR assignments in proteins (TATAPRO)

    Energy Technology Data Exchange (ETDEWEB)

    Atreya, H.S.; Sahu, S.C.; Chary, K.V.R.; Govil, Girjesh [Tata Institute of Fundamental Research, Department of Chemical Sciences (India)

    2000-06-15

    A novel automated approach for the sequence specific NMR assignments of {sup 1}H{sup N}, {sup 13}C{sup {alpha}}, {sup 13}C{sup {beta}}, {sup 13}C'/{sup 1}H{sup {alpha}} and {sup 15}N spins in proteins, using triple resonance experimental data, is presented. The algorithm, TATAPRO (Tracked AuTomated Assignments in Proteins) utilizes the protein primary sequence and peak lists from a set of triple resonance spectra which correlate {sup 1}H{sup N} and {sup 15}N chemical shifts with those of {sup 13}C{sup {alpha}}, {sup 13}C{sup {beta}} and {sup 13}C'/{sup 1}H{sup {alpha}}. The information derived from such correlations is used to create a 'master{sub l}ist' consisting of all possible sets of {sup 1}H{sup N}{sub i}, {sup 15}N{sub i}, {sup 13}C{sup {alpha}}{sub i}, {sup 13}C{sup {beta}}{sub i}, {sup 13}C'{sub i}/{sup 1}H{sup {alpha}}{sub i}, {sup 13}C{sup {alpha}}{sub i-1}, {sup 13}C{sup {beta}}{sub i-1} and {sup 13}C'{sub i-1}/ {sup 1}H{sup {alpha}}{sub i-1} chemical shifts. On the basis of an extensive statistical analysis of {sup 13}C{sup {alpha}} and {sup 13}C{sup {beta}} chemical shift data of proteins derived from the BioMagResBank (BMRB), it is shown that the 20 amino acid residues can be grouped into eight distinct categories, each of which is assigned a unique two-digit code. Such a code is used to tag individual sets of chemical shifts in the master{sub l}ist and also to translate the protein primary sequence into an array called pps{sub a}rray. The program then uses the master{sub l}ist to search for neighbouring partners of a given amino acid residue along the polypeptide chain and sequentially assigns a maximum possible stretch of residues on either side. While doing so, each assigned residue is tracked in an array called assig{sub a}rray, with the two-digit code assigned earlier. The assig{sub a}rray is then mapped onto the pps{sub a}rray for sequence specific resonance assignment. The program has been tested using

  1. Application of Neutrosophic Set Theory in Generalized Assignment Problem

    Directory of Open Access Journals (Sweden)

    Supriya Kar

    2015-09-01

    Full Text Available This paper presents the application of Neutrosophic Set Theory (NST in solving Generalized Assignment Problem (GAP. GAP has been solved earlier under fuzzy environment. NST is a generalization of the concept of classical set, fuzzy set, interval-valued fuzzy set, intuitionistic fuzzy set. Elements of Neutrosophic set are characterized by a truth-membership function, falsity and also indeterminacy which is a more realistic way of expressing the parameters in real life problem. Here the elements of the cost matrix for the GAP are considered as neutrosophic elements which have not been considered earlier by any other author. The problem has been solved by evaluating score function matrix and then solving it by Extremum Difference Method (EDM [1] to get the optimal assignment. The method has been demonstrated by a suitable numerical example.

  2. Learning, Teaching, and Turn Taking in the Repeated Assignment Game

    OpenAIRE

    Cason, Timothy N.; Sau-Him Paul Lau; Vai-Lam Mui

    2011-01-01

    History-dependent strategies are often used to support cooperation in repeated game models. Using the indefinitely repeated common-pool resource assignment game and a perfect stranger experimental design, this paper reports novel evidence that players who have successfully used an efficiency-enhancing turn taking strategy will teach other players in subsequent supergames to adopt this strategy. We find that subjects engage in turn taking frequently in both the Low Conflict and the High Confli...

  3. Flight Control Design for a Tailless Aircraft Using Eigenstructure Assignment

    OpenAIRE

    Clara Nieto-Wire; Kenneth Sobel

    2011-01-01

    We apply eigenstructure assignment to the design of a flight control system for a wind tunnel model of a tailless aircraft. The aircraft, known as the innovative control effectors (ICEs) aircraft, has unconventional control surfaces plus pitch and yaw thrust vectoring. We linearize the aircraft in straight and level flight at an altitude of 15,000 feet and Mach number 0.4. Then, we separately design flight control systems for the longitudinal and lateral dynamics. We use a control allocation ...

  4. Towards a virtualized Internet for computer networking assignments

    OpenAIRE

    Bellido Triana, Luis; Fernández Cambronero, David; Pastor Martín, Encarnación

    2013-01-01

    By combining virtualization technologies, virtual private network techniques and parameterization of network scenarios it is possible to enhance a networking laboratory, typically carried out in university laboratory premises using equipment located there, by interconnecting it to virtual networks running on the students own personal computers. This paper describes some experiences applying this model to create hands-on assignments for a large group of students in computer networking education.

  5. Solving the Quadratic Assignment Problem by a Hybrid Algorithm

    Directory of Open Access Journals (Sweden)

    Aldy Gunawan

    2011-01-01

    Full Text Available This paper presents a hybrid algorithm to solve the Quadratic Assignment Problem (QAP. The proposed algorithm involves using the Greedy Randomized Adaptive Search Procedure (GRASP to obtain an initial solution, and then using a combined Simulated Annealing (SA and Tabu Search (TS algorithm to improve the solution. Experimental results  indicate that the hybrid algorithm is able to obtain good quality solutions for QAPLIB test problems within reasonable computation time.

  6. Artificial Bee Colony Optimization for Multiobjective Quadratic Assignment Problem

    OpenAIRE

    Eleyan, Haytham Mohammed

    2015-01-01

    ABSTRACT: Excellent ability of swarm intelligence can be used to solve multi-objective combinatorial optimization problems. Bee colony algorithms are new swarm intelligence techniques inspired from the smart behaviors of real honeybees in their foraging behavior. Artificial bee colony optimization algorithm has recently been applied for difficult real-valued and combinational optimization problems. Multiobjective quadratic assignment problem (mQAP) is a well-known and hard combinational optim...

  7. Determinants of physician assignment rates by type of service

    OpenAIRE

    Rice, Thomas

    1984-01-01

    In this article, the determinants of physician assignment rates under the Medicare program are examined separately for medical, surgical, laboratory, and radiology services. Data for this study include copies of all Medicare claims submitted by over 1,200 Colorado general practitioners, internists, and general surgeons during the periods both before and after they experienced a substantial change in program reimbursement rates. The results indicate that there is a significant positive relatio...

  8. Three results on frequency assignment in linear cellular networks

    Czech Academy of Sciences Publication Activity Database

    Chrobak, M.; Sgall, Jiří

    Berlin: Springer, 2009 - (Goldbert, A.; Zhou, Y.), s. 129-139. (Lecture Notes in Computer Science. 5564). ISBN 978-3-642-02157-2. [5th International Conference on Algorithmic Aspects in Information and Management. San Francisco (US), 15.06.2009-17.06.2009] R&D Projects: GA MŠk(CZ) 1M0545; GA AV ČR IAA100190902 Keywords : frequency assignment * approximation algorithms * online algorithms Subject RIV: IN - Informatics, Computer Science

  9. A singular value sensitivity approach to robust eigenstructure assignment

    DEFF Research Database (Denmark)

    Søgaard-Andersen, Per; Trostmann, Erik; Conrad, Finn

    1986-01-01

    A design technique for improving the feedback properties of multivariable state feedback systems designed using eigenstructure assignment is presented. Based on a singular value analysis of the feedback properties a design parameter adjustment procedure is outlined. This procedure allows for the...... preservation of important properties of the initial design, by selecting only a subset of the design parameters for adjustment. The computational requirements are modest and straight-forward to implement with standard software. An example illustrating the method is included....

  10. Graph-Based Dynamic Assignment Of Multiple Processors

    Science.gov (United States)

    Hayes, Paul J.; Andrews, Asa M.

    1994-01-01

    Algorithm-to-architecture mapping model (ATAMM) is strategy minimizing time needed to periodically execute graphically described, data-driven application algorithm on multiple data processors. Implemented as operating system managing flow of data and dynamically assigns nodes of graph to processors. Predicts throughput versus number of processors available to execute given application algorithm. Includes rules ensuring application algorithm represented by graph executed periodically without deadlock and in shortest possible repetition time. ATAMM proves useful in maximizing effectiveness of parallel computing systems.

  11. Analysis of Decision Postponement Strategies for Aircraft Assignment under Uncertainty

    OpenAIRE

    Suwandechochai, Rawee

    2002-01-01

    The ability to effectively match supply and demand can lead to significant revenue benefits in the airline industry. Airline supply management deals with assigning the right resources (i.e., aircraft and crew) to the right routes in the flight network. Due to certain crew regulations, operating characteristics, and constraints of the airline companies, these supply management decisions need to be made well in advance of departures, at a time when demand is highly uncertain. However, demand fo...

  12. Phase transition in the assignment problem for random matrices

    Science.gov (United States)

    Esteve, J. G.; Falceto, F.

    2005-12-01

    We report an analytic and numerical study of a phase transition in a P problem (the assignment problem) that separates two phases whose representatives are the simple matching problem (an easy P problem) and the traveling-salesman problem (a NP-complete problem). Like other phase transitions found in combinatoric problems (K-satisfiability, number partitioning) this can help to understand the nature of the difficulties in solving NP problems an to find more accurate algorithms for them.

  13. Project Assignments When Budget Padding Taints Resource Allocation

    OpenAIRE

    Anil Arya; Brian Mittendorf

    2006-01-01

    This paper shows that rotation programs can be an effective response to concerns of employee budget padding. Rotation programs naturally create a "portfolio" of assignments for each manager, and the resulting diversification can reduce the downside of resource rationing. In particular, the production versus rents trade-off linked with adverse selection problems can be more efficiently carried out when the firm faces two managers with average information advantages, rather than one with a larg...

  14. Complete Stereochemical Assignment of Campechic Acids A and B.

    Science.gov (United States)

    Isaka, Ruri; Yu, Linkai; Sasaki, Makoto; Igarashi, Yasuhiro; Fuwa, Haruhiko

    2016-05-01

    Campechic acids A and B are anti-invasive polyketide antibiotics isolated from Streptomyces sp. CHI93 strain. Herein we describe stereoselective synthesis of the C-16-C-30 fragment of campechic acids A and B via a biosynthesis-inspired epoxide-opening cascade and its NMR spectroscopic comparison with the authentic degradation product, resulting in configurational assignment of the C-21, C-24, C-25, and C-28 stereogenic centers and reassignment of the C-18 stereogenic center. PMID:27045676

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

    Science.gov (United States)

    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…

  16. Molecular test to assign individuals within the Cacopsylla pruni complex.

    Directory of Open Access Journals (Sweden)

    Jean Peccoud

    Full Text Available Crop protection requires the accurate identification of disease vectors, a task that can be made difficult when these vectors encompass cryptic species. Here we developed a rapid molecular diagnostic test to identify individuals of Cacopsyllapruni (Scopoli, 1763 (Hemiptera: Psyllidae, the main vector of the European stone fruit yellows phytoplasma. This psyllid encompasses two highly divergent genetic groups that are morphologically similar and that are characterized by genotyping several microsatellite markers, a costly and time-consuming protocol. With the aim of developing species-specific PCR primers, we sequenced the Internal Transcribed Spacer 2 (ITS2 on a collection of C. pruni samples from France and other European countries. ITS2 sequences showed that the two genetic groups represent two highly divergent clades. This enabled us to develop specific primers for the assignment of individuals to either genetic group in a single PCR, based on ITS2 amplicon size. All previously assigned individuals yielded bands of expected sizes, and the PCR proved efficient on a larger sample of 799 individuals. Because none appeared heterozygous at the ITS2 locus (i.e., none produced two bands, we inferred that the genetic groups of C. pruni, whose distribution is partly sympatric, constitute biological species that have not exchanged genes for an extended period of time. Other psyllid species (Cacopsylla, Psylla, Triozidae and Aphalaridae failed to yield any amplicon. These primers are therefore unlikely to produce false positives and allow rapid assignment of C. pruni individuals to either cryptic species.

  17. Target assignment for security officers to K targets (TASK)

    International Nuclear Information System (INIS)

    A probabilistic algorithm is developed to provide an optimal Target Assignment for Security officers to K targets (TASK) using a maximin criterion. Under the assumption of only a limited number (N) of security officers, the TASK computer model determines deployment assignments which maximize the system protection against sabotage by an adversary who may select any link in the system, including the weakest, for the point of attack. Applying the TASK model to a hypothetical nuclear facility containing a nine-level building reveals that aggregate targets covering multiple vital areas should be utilized to reduce the number of possible target assignments to a value equal to or only slightly larger than N. The increased probability that a given aggregate target is covered by one or more security officers offsets the slight decrease in interruption probability due to its occurring earlier in the adversary's path. In brief, the TASK model determines the optimal maximin deployment strategy for limited numbers of security officers and calculates a quantitative measure of the resulting system protection

  18. Some recent results in the analysis of greedy algorithms for assignment problems

    OpenAIRE

    Faigle, Ulrich

    1994-01-01

    We survey some recent developments in the analysis of greedy algorithms for assignment and transportation problems. We focus on the linear programming model for matroids and linear assignment problems with Monge property, on general linear programs, probabilistic analysis for linear assignment and makespan minimization, and on-line algorithms for linear and non-linear assignment problems.

  19. Making the Shift: From Traditional Research Assignments to Guiding Inquiry Learning

    Science.gov (United States)

    Maniotes, Leslie K.; Kuhlthau, Carol C.

    2014-01-01

    The traditional research assignment is a common approach for teachers unaware of an inquiry process. In the traditional assignment, on the very first day that the work is assigned, students are given a topic or asked to choose a topic from a prepared list. They are given the parameters of the assignment, the number of sources required, the number…

  20. Practice Makes Progress? Homework Assignments and Outcome in Treatment of Cocaine Dependence

    Science.gov (United States)

    Carroll, Kathleen M.; Nich, Charla; Ball, Samuel A.

    2005-01-01

    The relationship between treatment outcome and the extent to which participants completed homework assignments was evaluated among 60 cocaine-dependent individuals assigned to cognitive-behavioral therapy (CBT). Homework was assigned in 72% of all sessions and initiated by participants in 48% of the sessions in which it was assigned. Completion of…

  1. 76 FR 42706 - Amendment of Inspector General Operations & Reporting System Audit, Assignment, and Timesheet...

    Science.gov (United States)

    2011-07-19

    ... assignment number, audit report number, the name and social security number of the assigned OIG auditor, or... AGENCY Amendment of Inspector General Operations & Reporting System Audit, Assignment, and Timesheet... Inspector General Operations & Reporting (IGOR) System Audit, Assignment, and Timesheet Files (EPA-42)...

  2. 30 CFR 256.62 - Assignment of lease or interest in lease.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 2 2010-07-01 2010-07-01 false Assignment of lease or interest in lease. 256... § 256.62 Assignment of lease or interest in lease. This section explains how to assign record title and other interests in OCS oil and gas or sulphur leases. (a) MMS may approve the assignment to you of...

  3. MONTE: An automated Monte Carlo based approach to nuclear magnetic resonance assignment of proteins

    Energy Technology Data Exchange (ETDEWEB)

    Hitchens, T. Kevin; Lukin, Jonathan A.; Zhan Yiping; McCallum, Scott A.; Rule, Gordon S. [Carnegie Mellon University, Department of Biological Sciences (United States)], E-mail: rule@andrew.cmu.edu

    2003-01-15

    A general-purpose Monte Carlo assignment program has been developed to aid in the assignment of NMR resonances from proteins. By virtue of its flexible data requirements the program is capable of obtaining assignments of both heavily deuterated and fully protonated proteins. A wide variety of source data, such as inter-residue scalar connectivity, inter-residue dipolar (NOE) connectivity, and residue specific information, can be utilized in the assignment process. The program can also use known assignments from one form of a protein to facilitate the assignment of another form of the protein. This attribute is useful for assigning protein-ligand complexes when the assignments of the unliganded protein are known. The program can be also be used as an interactive research tool to assist in the choice of additional experimental data to facilitate completion of assignments. The assignment of a deuterated 45 kDa homodimeric Glutathione-S-transferase illustrates the principal features of the program.

  4. EZ-ASSIGN, a program for exhaustive NMR chemical shift assignments of large proteins from complete or incomplete triple-resonance data

    International Nuclear Information System (INIS)

    For several of the proteins in the BioMagResBank larger than 200 residues, 60 % or fewer of the backbone resonances were assigned. But how reliable are those assignments? In contrast to complete assignments, where it is possible to check whether every triple-resonance Generalized Spin System (GSS) is assigned once and only once, with incomplete data one should compare all possible assignments and pick the best one. But that is not feasible: For example, for 200 residues and an incomplete set of 100 GSS, there are 1.6 × 10260 possible assignments. In “EZ-ASSIGN”, the protein sequence is divided in smaller unique fragments. Combined with intelligent search approaches, an exhaustive comparison of all possible assignments is now feasible using a laptop computer. The program was tested with experimental data of a 388-residue domain of the Hsp70 chaperone protein DnaK and for a 351-residue domain of a type III secretion ATPase. EZ-ASSIGN reproduced the hand assignments. It did slightly better than the computer program PINE (Bahrami et al. in PLoS Comput Biol 5(3):e1000307, 2009) and significantly outperformed SAGA (Crippen et al. in J Biomol NMR 46:281–298, 2010), AUTOASSIGN (Zimmerman et al. in J Mol Biol 269:592–610, 1997), and IBIS (Hyberts and Wagner in J Biomol NMR 26:335–344, 2003). Next, EZ-ASSIGN was used to investigate how well NMR data of decreasing completeness can be assigned. We found that the program could confidently assign fragments in very incomplete data. Here, EZ-ASSIGN dramatically outperformed all the other assignment programs tested

  5. User Equilibrium Route Assignment for Microscopic Pedestrian Simulation

    CERN Document Server

    Kretz, Tobias; Hofsäß, Ingmar

    2014-01-01

    For the simulation of pedestrians a method is introduced to find routing alternatives from any origin position to a given destination area in a given geometry composed of walking areas and obstacles. The method includes a parameter which sets a threshold for the approximate minimum size of obstacles to generate routing alternatives. The resulting data structure for navigation is constructed such that it does not introduce artifacts to the movement of simulated pedestrians and that locally pedestrians prefer to walk on the shortest path. The generated set of routes can be used with iterating static or dynamic assignment methods.

  6. Improved Harmony Search with Chaos for Solving Linear Assignment Problems

    Directory of Open Access Journals (Sweden)

    Osama Abdel-Raouf

    2014-04-01

    Full Text Available This paper presents an improved version of a harmony meta-heuristic algorithm, (IHSCH, for solving the linear assignment problem. The proposed algorithm uses chaotic behavior to generation a candidate solution in a behavior similar to acoustic monophony. Numerical results show that the IHSCH is able to obtain the optimal results in comparison with traditional methods (the Hungarian method. However, the benefit of the proposed algorithm is its ability to obtain the optimal solution within less computation in comparison with the Hungarian method.

  7. Symmetric reconfigurable capacity assignment in a bidirectional DWDM access network.

    Science.gov (United States)

    Ortega, Beatriz; Mora, José; Puerto, Gustavo; Capmany, José

    2007-12-10

    This paper presents a novel architecture for DWDM bidirectional access networks providing symmetric dynamic capacity allocation for both downlink and uplink signals. A foldback arrayed waveguide grating incorporating an optical switch enables the experimental demonstration of flexible assignment of multiservice capacity. Different analog and digital services, such as CATV, 10 GHz-tone, 155Mb/s PRBS and UMTS signals have been transmitted in order to successfully test the system performance under different scenarios of total capacity distribution from the Central Station to different Base Stations with two reconfigurable extra channels for each down and upstream direction. PMID:19550967

  8. CAD Model Retrieval Based on Graduated Assignment Algorithm

    Science.gov (United States)

    Tao, Songqiao

    2015-06-01

    A retrieval approach for CAD models based on graduated assignment algorithm is proposed in this paper. First, CAD models are transformed into face adjacency graphs (FAGs). Second, the vertex compatibility matrix and edge compatibility matrix between the FAGs of the query and data models are calculated, and the similarity metric for the two comparison models is established from their compatibility matrices, which serves as the optimization objective function for selecting vertex mapping matrix M between the two comparison models. Finally, Sinkhorn's alternative normalization approach for M's rows and columns is adopted to find the optimal vertex mapping matrix M. Experimental results have shown that the proposed approach supports CAD model retrieval.

  9. Java bytecode verification via static single assignment form

    DEFF Research Database (Denmark)

    Gal, Andreas; Probst, Christian W.; Franz, Michael

    2008-01-01

    Java Virtual Machines (JVMs) traditionally perform bytecode verification by way of an iterative data-flow analysis. Bytecode verification is necessary to ensure type safety because temporary variables in the JVM are not statically typed. We present an alternative verification mechanism that trans...... the additional benefit of generating SSA as a side effect, which may be immediately useful for a subsequent dynamic compilation stage....... transforms JVM bytecode into Static Single Assignment Form (SSA) and thereby propagates definitions directly to uses. Type checking at control flow merge points can then be performed in a single pass. Our prototype implementation of the new algorithm is faster than the standard JVM bytecode verifier. It has...

  10. ENHANCEMENT OF TRANSMISSION RANGE ASSIGNMENT FOR CLUSTERED WIRELESS SENSOR NETWORKS

    Directory of Open Access Journals (Sweden)

    M. Salamah

    2016-03-01

    Full Text Available Transmitter range assignment in clustered wireless networks is the bottleneck of the balance between energy conservation and the connectivity to deliver data to the sink or gateway node. The aim of this research is to optimize the energy consumption through reducing the transmission ranges of the nodes, while maintaining high probability to have end-to-end connectivity to the network’s data sink. We modified the approach given in [1] to achieve more than 25% power saving through reducing cluster head (CH transmission range of the backbone nodes in a multihop wireless sensor network with ensuring at least 95% end-to-end connectivity probability.

  11. Solving Large Quadratic|Assignment Problems in Parallel

    DEFF Research Database (Denmark)

    Clausen, Jens; Perregaard, Michael

    1997-01-01

    Quadratic Assignment problems are in practice among the most difficult to solve in the class of NP-complete problems. The only successful approach hitherto has been Branch-and-Bound-based algorithms, but such algorithms are crucially dependent on good bound functions to limit the size of the space...... and recalculation of bounds between branchings when used in a parallel Branch-and-Bound algorithm. The algorithm has been implemented on a 16-processor MEIKO Computing Surface with Intel i860 processors. Computational results from the solution of a number of large QAPs, including the classical Nugent...

  12. DRUG REGULATORY STATUS ASSIGNMENT CRITERIA: A CONTRAST AMONG 2 COUNTRIES

    OpenAIRE

    Anoop Paruchuri*, Vini Pavithran , M. Pavani , S. Selvamuthukumaran and G. P. Mohanta

    2013-01-01

    After a laborious and extravagant procedure the drug finally enters the market for use. But who determines the new drug status as a prescription only or an OTC? There is a clear cut contrast between the US and India with respect to their assignment guidelines and the future prospect of a new drug. In the US the regulatory status of the approved drug is determined as per the FDA guidelines (FDCA of 1938) in accordance with the Durham-Humphrey act of 1951 which depicts the criteria required for...

  13. An optimal query assignment for wireless sensor networks

    OpenAIRE

    Mitici, Mihaela; Onderwater, Martijn; Graaf, de, G.; Ommeren, van, Jos; Dijk, van, G.; Goseling, Jasper

    2012-01-01

    With the increased use of large-scale real-time embedded sensor networks, new control mechanisms are needed to avoid congestion and meet required Quality of Service (QoS) levels. In this paper, we propose a Markov Decision Problem (MDP) to prescribe an optimal query assignment strategy that achieves a trade-off between two QoS requirements: query response time and data validity. Query response time is the time that queries spend in the sensor network until they are solved. Data validity (fres...

  14. ISOLATION AND NMR SPECTRAL ASSIGNMENTS OF STEVIOLBIOSIDE AND STEVIOSIDE

    Directory of Open Access Journals (Sweden)

    Venkata Sai Prakash Chaturvedula

    2011-04-01

    Full Text Available The complete 1H and 13C NMR assignments of the two diterpene glycosides, 13-[(2-O--D-glucopyranosyl--D-glucopyranosyloxy]-ent-kaur-16-en-19-oic acid (steviolbioside and 3-[(2-O--D-glucopyranosyl--D-glucopyranosyloxy]-ent-kaur-16-en-19-oic acid β-D-glucopyranosyl ester (stevioside isolated from Stevia rebaudiana were achieved on the basis of extensive NMR (1H and 13C, COSY, HMQC, HMBC and MS spectral data. The structures of steviolbioside and stevioside were further supported by acid and enzymatic hydrolysis studies by identifying their corresponding aglycone and sugar residues.

  15. Labor Supply with Job Assignment under Balanced Growth

    OpenAIRE

    Claudio Michelacci; Joseph Pijoan-Mas

    2014-01-01

    We consider a competitive equilibrium growth model where technological progress is embodied into new jobs that are assigned to workers of different skills. In every period workers decide whether to actively participate in the labor market and if so how many hours to work on the job. Balanced growth requires that the job technology is complementary with the worker’s total labor input in the job, which is jointly determined by his skill and his working hours. Since lower skilled workers can sup...

  16. NMR assignments of mitochondrial cyclophilin Cpr3 from Saccharomyces cerevisiae.

    Science.gov (United States)

    Shukla, Vaibhav Kumar; Singh, Jai Shankar; Trivedi, Dipesh; Hosur, Ramakrishna V; Kumar, Ashutosh

    2016-04-01

    Cyclophilins regulate protein folding, transport and signalling through catalysis of proline isomerization, and are ubiquitously expressed in both prokaryotes and eukaryotes. Cpr3 is the yeast mitochondrial cyclophilin and it is structurally and biophysically uncharacterized so far. Yeast cyclophilin gene cpr3 is essential for the lactate metabolism. Here, we report (1)H, (13)C, and (15)N chemical shift assignments of Cpr3 protein determined by various 2D and 3D heteronuclear NMR experiments at pH 6.5, and temperature 298 K. PMID:26897529

  17. A geometric chracterization of the nucleolus of the assignment game

    OpenAIRE

    Francesc Llerena; Marina Nunez; Carles Rafels

    2011-01-01

    Maschler et al. (1979) provide a geometrical characterization for the intersection of the kernel and the core of a coalitional game, showing that those allocations that lie in both sets are always the midpoint of certain bargaining range between each pair of players. In the case of the assignment game, this means that the kernel can be determined as those core allocations where the maximum amount, that can be transferred without getting outside the core, from one agent to his/her optimally ma...

  18. A geometric characterization of the nucleolus of the assignment game

    OpenAIRE

    Francesc Llerena; Marina Nunez

    2011-01-01

    Maschler et al. (1979) provide a geometrical characterization for the intersection of the kernel and the core of a coalitional game, showing that those allocations that lie in both sets are always the midpoint of certain bargaining range between each pair of players. In the case of the assignment game, this means that the kernel can be determined as those core allocations where the maximum amount, that can be transferred without getting outside the core, from one agent to his/her optimally ma...

  19. Agent Assignment for Process Management: Pattern Based Agent Performance Evaluation

    Science.gov (United States)

    Jablonski, Stefan; Talib, Ramzan

    In almost all workflow management system the role concept is determined once at the introduction of workflow application and is not reevaluated to observe how successfully certain processes are performed by the authorized agents. This paper describes an approach which evaluates how agents are working successfully and feed this information back for future agent assignment to achieve maximum business benefit for the enterprise. The approach is called Pattern based Agent Performance Evaluation (PAPE) and is based on machine learning technique combined with post processing technique. We report on the result of our experiments and discuss issues and improvement of our approach.

  20. Strategy-proof assignment with a vanishing budget surplus

    OpenAIRE

    Moulin, Hervé

    2007-01-01

    A VCG mechanism to assign p identical objects is feasible is cash transfers yield no deficit. The efficiency loss of such a mechanism is the worst ratio of budget surplus to efficient surplus. We compute the optimal efficiency loss for all n and p, when we also require Voluntary Participation as well as when we do not. Without the VP requirement, the optimal efficiency loss converges to zero uniformly in p, and exponentially fast if p is fixed. With the VP requirement asymptotic budget balanc...

  1. Pole assignment for control of flexible link mechanisms

    Science.gov (United States)

    Ouyang, H.; Richiedei, D.; Trevisani, A.

    2013-06-01

    Although the dynamics of flexible link mechanisms and manipulators is nonlinear, motion and vibration control often relies on linear or piecewise-linear controllers based on linearized models in order to ensure real-time implementability. Keeping such an objective in mind, this paper proposes a general receptance-based method for pole assignment in flexible link mechanisms with a single rigid-body degree of freedom (dof) using a single control force (i.e. rank-one control). A chief advantage of the approach proposed is that it makes use of the second-order system model representation through the receptance matrix of the symmetric part of the asymmetric model. The asymmetric terms in the stiffness and damping matrices arise from the coupling between rigid-body motion and elastic motion. The proposed receptance-based formulation ensures numerical reliability and efficiency also for large dimensional and ill-conditioned system models originating from the simultaneous presence of high-frequency and weakly controllable oscillating modes, and of rigid-body motion low-frequency dynamics, which may also be unstable. The validation of the proposed technique is carried out by performing pole assignment through position and velocity feedback or acceleration and velocity feedback on a mechanism. Integral control is also introduced to improve the steady state system response. Numerical results indicate that the proposed method is more accurate and robust than two popular established methods.

  2. Credit assignment in movement-dependent reinforcement learning.

    Science.gov (United States)

    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

  3. Theoretical assignment of the Clements bands of SO2

    Science.gov (United States)

    Lévêque, Camille; Taïeb, Richard; Köppel, Horst

    2015-10-01

    The photoabsorption spectrum of SO2 is theoretically investigated in the energy range 3.56-4.05 eV (28713-32665 cm-1). The lowest vibronic levels of the coupled excited electronic states (11A2 / 11B1) have been computed using Lanczos diagonalization of the Hamiltonian. The potential energy surfaces and the diabatization scheme used here were already successfully applied to describe the non-adiabatic dynamics of the molecule (Lévêque et al., 2013). The important vibronic states, playing a role in the experimental spectrum, have been analyzed according to their nodal pattern to propose the first theoretical assignment of the low-energy part of the spectrum. The Clements bands A-D have been assigned and exhibit contributions from numerous transitions, in the low resolution spectrum. The overlap of these transitions is shown to provide an "accidental" regularity of the Clements bands with respect to their intensities, while their regular energy spacing (∼ 220 cm-1) results from a unique series (4,n2,1).

  4. Algorithms for selecting informative marker panels for population assignment.

    Science.gov (United States)

    Rosenberg, Noah A

    2005-11-01

    Given a set of potential source populations, genotypes of an individual of unknown origin at a collection of markers can be used to predict the correct source population of the individual. For improved efficiency, informative markers can be chosen from a larger set of markers to maximize the accuracy of this prediction. However, selecting the loci that are individually most informative does not necessarily produce the optimal panel. Here, using genotypes from eight species--carp, cat, chicken, dog, fly, grayling, human, and maize--this univariate accumulation procedure is compared to new multivariate "greedy" and "maximin" algorithms for choosing marker panels. The procedures generally suggest similar panels, although the greedy method often recommends inclusion of loci that are not chosen by the other algorithms. In seven of the eight species, when applied to five or more markers, all methods achieve at least 94% assignment accuracy on simulated individuals, with one species--dog--producing this level of accuracy with only three markers, and the eighth species--human--requiring approximately 13-16 markers. The new algorithms produce substantial improvements over use of randomly selected markers; where differences among the methods are noticeable, the greedy algorithm leads to slightly higher probabilities of correct assignment. Although none of the approaches necessarily chooses the panel with optimal performance, the algorithms all likely select panels with performance near enough to the maximum that they all are suitable for practical use. PMID:16305328

  5. Channel Assignment Algorithms for MRMC Wireless Mesh Networks

    Directory of Open Access Journals (Sweden)

    Mohammad A Hoque

    2011-11-01

    Full Text Available The wireless mesh networksare considered as one of the vital elements in today’s converged networks,providing high bandwidth and connectivity over large geographical areas. Mesh routers equipped with multiple radios can significantly overcome the capacity problem and increase the aggregate throughput of the network where single radio nodessuffer from performancedegradation. Moreover, the market availability of cheap radios or network interfaces also makes multi-radio solutions more feasible.A key issue in such networks is how to efficiently design a channel assignmentscheme that utilizes the available channels as well as increases overall performance of the network. This paper provides an overall review on the issues pertaining to the channel assignment in WMNs and the most relevant approaches and solutions developed in the area. They include design challenges, goals and criteria; routing considerations, graph based solutions and challenges of partially overlapped channels. We conclude that the assignment of channels to the radio interfaces continuously poses significant challenges. Many research issues remain open for further investigation.

  6. Turkish law and the UNCITRAL’s work on the assignment of receivables with a special reference to the assignment of future receivables.

    OpenAIRE

    Akseli, Orkun

    2007-01-01

    Raising finance by the assignment of receivables is an important financing technique and its regulation varies under different legal systems. The UNCITRAL Convention on the Assignment of Receivables in International Trade (“the UNCITRAL Convention”) was adopted in 2001 by the General Assembly. The UNCITRAL Convention was prepared to establish a sophisticated, comprehensive and potentially far-reaching model for the modernisation of domestic assignment laws of countries and a substantive step ...

  7. An Eigenstructure Assignment for a Static Synchronous Compensator

    Directory of Open Access Journals (Sweden)

    Ahmad N. Al-Husban

    2009-01-01

    Full Text Available Problem statement: Power flow through an AC transmission line is influenced by three basic electrical parameters, which are line impedance, magnitudes and phase-shift angle between the sending and receiving voltages. Therefore, the change in any of the three basic parameters means a change in the power flow through the transmission line. The aims of this research paper are: increase the power transfer capability of transmission systems, minimize the transmission losses, support a good voltage profile and retain system stability under large disturbances. Study the use of eigenstructure techniques for state feedback control of the power system static compensator. Therefore, the mathematical analysis was performed for eigenvector assignment, power flow transmission line and for the static compensator analysis based on the transformation of the three-phase into d-q frame. Approach: A novel control method for regulating the power system in case of abnormal conditions was carried out. The system considered is a static synchronous compensator. The study includes a detailed mathematical analysis of the impact of the shunt compensator on the power flow; investigation of the system constraints and their effects on the static compensator control; in addition simulation of static compensator to control a transmitted active power flow on the transmission line. The conducted method provides a way of constructing the state feedback gain matrix to satisfy a certain prescribed performance. Results: The solutions of the obtained equation were conducted using the computer simulation method for both open-loop and static compensator techniques. The result shows fast tracking of the power flow transient response when using the static compensator technique comparing with open-loop technique. However, the same trend of the behavior was observed for all cases. Conclusion: A new method for developing a parameterized feedback matrix that assigns a closed-loop prespecified

  8. Using Collaborative Writing Groups to Teach Analysis of an RFP (My Favorite Assignment).

    Science.gov (United States)

    Scheffler, Judith

    1992-01-01

    Describes a team assignment in an undergraduate report and proposal writing course in which students analyze a request for proposals. Discusses incorporating collaborative writing groups in the assignment and the grading method. (SR)

  9. 30 CFR 774.17 - Transfer, assignment, or sale of permit rights.

    Science.gov (United States)

    2010-07-01

    ... SYSTEMS UNDER REGULATORY PROGRAMS REVISION; RENEWAL; TRANSFER, ASSIGNMENT, OR SALE OF PERMIT RIGHTS; POST... approval of the transfer, assignment, or sale of permit rights. (2) Advertise the filing of the...

  10. Predicting Assignment Submissions in a Multiclass Classification Problem

    Directory of Open Access Journals (Sweden)

    Bogdan Drăgulescu

    2015-08-01

    Full Text Available Predicting student failure is an important task that can empower educators to counteract the factors that affect student performance. In this paper, a part of the bigger problem of predicting student failure is addressed: predicting the students that do not complete their assignment tasks. For solving this problem, real data collected by our university’s educational platform was used. Because the problem consisted of predicting one of three possible classes (multi-class classification, the appropriate algorithms and methods were selected. Several experiments were carried out to find the best approach for this prediction problem and the used data set. An approach of time segmentation is proposed in order to facilitate the prediction from early on. Methods that address the problems of high dimensionality and imbalanced data were also evaluated. The outcome of each approach is shown and compared in order to select the best performing classification algorithm for the problem at hand.

  11. Online Prelectures: An Alternative to Textbook Reading Assignments

    Science.gov (United States)

    Sadaghiani, Homeyra R.

    2012-05-01

    To engage students in a more meaningful discussion of course material and prompt their higher thinking skills, most instructors expect students to read the course textbook for initial exposure to the course content before class. However, as many instructors are aware, most students do not read their textbook throughout the quarter.1,2 At California State Polytechnic University, Pomona (Cal Poly Pomona) we have adopted web-based multimedia learning modules (MLMs) as prelecture assignments to help students to prepare for the class activities. The MLMs place lecture contents into the hands and control of the learners; similar to "flipped"3 or "inverted"4 classroom approaches, this method allows students to receive key course content outside of class and apply and analyze the content actively during class. In addition to initial exposure to basic principle, the MLMs provide additional worked examples that cannot be thoroughly covered in class.

  12. Practical Homework Assignments As Part Of Chemistry Teaching And Learning

    Directory of Open Access Journals (Sweden)

    Dragica Trivic

    2010-12-01

    Full Text Available The paper presents two examples of classroom practices when practical research tasks in primary and secondary school are assigned as homework. The task for primary school students was aimed at developing divergent thinking, which is evidenced and illustrated by some examples of students’ solutions. The task for secondary school students illustrates how these students are able to apply their classroom knowledge of acids, bases and indicators on the substances they can find in everyday life. The students performed the following activities: problem analysis, action planning, and equipment selection/assembling, performing the experiment, measuring (mass, volume, data recording, and drawing conclusions. The results of both tasks served as a basis for introducing new contents in the classroom and stimulated active participation of a larger number of students.Keywords:

  13. Nitrogen Band Assignments for Presolar and Carbonado Diamonds

    CERN Document Server

    Garai, Jozsef; Chen, Jiuhua

    2010-01-01

    Presolar and carbonado diamonds formed in hydrogen rich environment and received severe radiation dose. It is suggested that these environmental affects altered the Substitutional N0 defect to Substitutional N+H defect by ionizing the nitrogen due to irradiation and by hydrogenating the ionized nitrogen. The bands of the substitutional N+H defect are deduced by red shifting the irradiation induced N+ bands due to the mass of the additional Hydrogen. The identified six bands induced by the N+H defects are present in both the presolar and the carbonado diamond spectra. The assignment of the substitutional N+H bands identifies all of the nitrogen related bands in the spectra, which shows that presolar and carbonado diamonds contain almost exclusively single nitrogen impurities. Thus these diamonds can be classified as type Ib. The substitutional N+H induced bands can be used to identify diamonds in space.

  14. Rate Adaptive Selective Segment Assignment for Reliable Wireless Video Transmission

    Directory of Open Access Journals (Sweden)

    Sajid Nazir

    2012-01-01

    Full Text Available A reliable video communication system is proposed based on data partitioning feature of H.264/AVC, used to create a layered stream, and LT codes for erasure protection. The proposed scheme termed rate adaptive selective segment assignment (RASSA is an adaptive low-complexity solution to varying channel conditions. The comparison of the results of the proposed scheme is also provided for slice-partitioned H.264/AVC data. Simulation results show competitiveness of the proposed scheme compared to optimized unequal and equal error protection solutions. The simulation results also demonstrate that a high visual quality video transmission can be maintained despite the adverse effect of varying channel conditions and the number of decoding failures can be reduced.

  15. Local Optima Networks of the Quadratic Assignment Problem

    CERN Document Server

    Daolio, Fabio; Ochoa, Gabriela; Tomassini, Marco

    2011-01-01

    Using a recently proposed model for combinatorial landscapes, Local Optima Networks (LON), we conduct a thorough analysis of two types of instances of the Quadratic Assignment Problem (QAP). This network model is a reduction of the landscape in which the nodes correspond to the local optima, and the edges account for the notion of adjacency between their basins of attraction. The model was inspired by the notion of 'inherent network' of potential energy surfaces proposed in physical-chemistry. The local optima networks extracted from the so called uniform and real-like QAP instances, show features clearly distinguishing these two types of instances. Apart from a clear confirmation that the search difficulty increases with the problem dimension, the analysis provides new confirming evidence explaining why the real-like instances are easier to solve exactly using heuristic search, while the uniform instances are easier to solve approximately. Although the local optima network model is still under development, w...

  16. 13C-NMR assignment, structure, and dynamics of deoxyoligonucleotides

    International Nuclear Information System (INIS)

    The unique spectral properties of 13C-NMR for studying nucleic acids and some of the important features of 13C-NMR in oligonucleotide studies are demostrated. The main difficulty in studying oligonucleotides by 13C-NMR and recent improvements in NMR instrumentation and advances in oligonucleotide synthesis are presented. The high resolution 13C-NMR spectra, T1 relaxation times and NOEs were measured for duplex of the self-complementary oligo-DNAs: d(CG)3 and d(GGTATACC) are studied. The target of this study is to developed a systematic 13C-NMR spectral assignment and to investigate the structure and dynamics of these two sequences by this techniques. (M.J.C.)

  17. Study on Fleet Assignment Problem Model and Algorithm

    Directory of Open Access Journals (Sweden)

    Yaohua Li

    2013-01-01

    Full Text Available The Fleet Assignment Problem (FAP of aircraft scheduling in airlines is studied, and the optimization model of FAP is proposed. The objective function of this model is revenue maximization, and it considers comprehensively the difference of scheduled flights and aircraft models in flight areas and mean passenger flows. In order to solve the model, a self-adapting genetic algorithm is supposed to solve the model, which uses natural number coding, adjusts dynamically crossover and mutation operator probability, and adopts intelligent heuristic adjusting to quicken optimization pace. The simulation with production data of an airline shows that the model and algorithms suggested in this paper are feasible and have a good application value.

  18. Dynamic Routing and Resource Assignment Algorithm In sloted optical Networks

    Directory of Open Access Journals (Sweden)

    Bisheng Quan

    2013-04-01

    Full Text Available All-optical wavelength division multiplexing networks are the most promising candidate for the next generation wideband backbone networks. To improve the utilization of wavelength, time division multiplexing technology is introduced. The routing, wavelength and time-slots assignment problem was studied in such time-space switched networks. Two new dynamic algorithms were proposed which distribute slots of the session request on multiple different wavelengths of single fiber separately based on fixed alternate routing and adaptive routing policy. Especially in LLR-MWLB algorithm, network link weights adjust adaptively with the available time slots of each link and load balancing strategy is adopted. The effectiveness of the proposed algorithms is demonstrated by simulations and results show the better performance.

  19. THE EVOLUTION OF GARNISHMENT AND WAGE ASSIGNMENT LAW IN ILLINOIS

    Directory of Open Access Journals (Sweden)

    Bradley A. Hansen

    2014-07-01

    Full Text Available Recent research shows that, despite high interest rates, wage earners in the early twentieth century frequently obtained credit from retail shops, from loan sharks, and from the emerging formal consumer credit market. When wage earners defaulted, the options for collection available to their creditors were governed by state laws on garnishment and wage assignment. These important laws varied widely from state to state, and little is known about their origins or evolution. In Illinois, the law put significant restrictions on creditors in the late nineteenth century, but the restrictions were removed in the first quarter of the twentieth century. This article shows how this dramatic shift resulted from the interaction of legislative and judicial activity and was driven by both interest group politics and judicial action.

  20. Assigning probability distributions to input parameters of performance assessment models

    International Nuclear Information System (INIS)

    This study presents an overview of various approaches for assigning probability distributions to input parameters and/or future states of performance assessment models. Specifically,three broad approaches are discussed for developing input distributions: (a) fitting continuous distributions to data, (b) subjective assessment of probabilities, and (c) Bayesian updating of prior knowledge based on new information. The report begins with a summary of the nature of data and distributions, followed by a discussion of several common theoretical parametric models for characterizing distributions. Next, various techniques are presented for fitting continuous distributions to data. These include probability plotting, method of moments, maximum likelihood estimation and nonlinear least squares analysis. The techniques are demonstrated using data from a recent performance assessment study for the Yucca Mountain project. Goodness of fit techniques are also discussed, followed by an overview of how distribution fitting is accomplished in commercial software packages. The issue of subjective assessment of probabilities is dealt with in terms of the maximum entropy distribution selection approach, as well as some common rules for codifying informal expert judgment. Formal expert elicitation protocols are discussed next, and are based primarily on the guidance provided by the US NRC. The Bayesian framework for updating prior distributions (beliefs) when new information becomes available is discussed. A simple numerical approach is presented for facilitating practical applications of the Bayes theorem. Finally, a systematic framework for assigning distributions is presented: (a) for the situation where enough data are available to define an empirical CDF or fit a parametric model to the data, and (b) to deal with the situation where only a limited amount of information is available

  1. Assigning probability distributions to input parameters of performance assessment models

    Energy Technology Data Exchange (ETDEWEB)

    Mishra, Srikanta [INTERA Inc., Austin, TX (United States)

    2002-02-01

    This study presents an overview of various approaches for assigning probability distributions to input parameters and/or future states of performance assessment models. Specifically,three broad approaches are discussed for developing input distributions: (a) fitting continuous distributions to data, (b) subjective assessment of probabilities, and (c) Bayesian updating of prior knowledge based on new information. The report begins with a summary of the nature of data and distributions, followed by a discussion of several common theoretical parametric models for characterizing distributions. Next, various techniques are presented for fitting continuous distributions to data. These include probability plotting, method of moments, maximum likelihood estimation and nonlinear least squares analysis. The techniques are demonstrated using data from a recent performance assessment study for the Yucca Mountain project. Goodness of fit techniques are also discussed, followed by an overview of how distribution fitting is accomplished in commercial software packages. The issue of subjective assessment of probabilities is dealt with in terms of the maximum entropy distribution selection approach, as well as some common rules for codifying informal expert judgment. Formal expert elicitation protocols are discussed next, and are based primarily on the guidance provided by the US NRC. The Bayesian framework for updating prior distributions (beliefs) when new information becomes available is discussed. A simple numerical approach is presented for facilitating practical applications of the Bayes theorem. Finally, a systematic framework for assigning distributions is presented: (a) for the situation where enough data are available to define an empirical CDF or fit a parametric model to the data, and (b) to deal with the situation where only a limited amount of information is available.

  2. Practice Makes Progress? Homework Assignments and Outcome in Treatment of Cocaine Dependence

    OpenAIRE

    Carroll, Kathleen M.; Nich, Charla; Ball, Samuel A.

    2005-01-01

    The relationship between treatment outcome and the extent to which participants completed homework assignments was evaluated among 60 cocaine-dependent individuals assigned to cognitive–behavioral therapy (CBT). Homework was assigned in 72% of all sessions and initiated by participants in 48% of the sessions in which it was assigned. Completion of homework was unrelated to participants' baseline characteristics and several indicators of treatment compliance. Participants who completed more ho...

  3. Gene3D: structural assignments for the biologist and bioinformaticist alike

    OpenAIRE

    Buchan, D. W. A.; Rison, S. C. G.; Bray, J.E.; Lee, D; Pearl, F.; Thornton, J M; Orengo, C. A.

    2003-01-01

    The Gene3D database ( http: / / www. biochem. ucl. ac. uk/ bsm/ cath_ new/ Gene3D/) provides structural assignments for genes within complete genomes. These are available via the internet from either the World Wide Web or FTP. Assignments are made using PSI- BLAST and subsequently processed using the DRange protocol. The DRange protocol is an empirically benchmarked method for assessing the validity of structural assignments made using sequence searching methods where appropriate assignment s...

  4. Two-sided matching in hierarchical organizations: an application for the assignment of military personnel

    OpenAIRE

    Robards, Paul Anthony

    2011-01-01

    Many large organizations rely on manual assignment processes, despite the theory of bounded rationality indicating that time and cognitive constraints would limit the quality of assignments. This research used participant experiments to explore the effect of information load on assignment quality: participants, motivated by induced value theory, performed the role of decision makers and information load was identified by the number of personnel requiring assignment and the number of attrib...

  5. Assertiveness for Librarians Harried by Inappropriate Lecture Hall and Classroom Assignments.

    Science.gov (United States)

    Parker, J. Carlyle

    1990-01-01

    Describes problems encountered by public librarians when assisting students with assignments that are difficult or impossible to complete. Examples of librarians' successes in assertive, tactful communication with instructors and a list of solutions to inappropriate assignments are provided. Special emphasis is given to assignments dealing with…

  6. Moving beyond "Bookish Knowledge": Using Film-Based Assignments to Promote Deep Learning

    Science.gov (United States)

    Olson, Joann S.; Autry, Linda; Moe, Jeffry

    2016-01-01

    This article investigates the effectiveness of a film-based assignment given to adult learners in a graduate-level group counseling class. Semi-structured interviews were conducted with four students; data analysis suggested film-based assignments may promote deep approaches to learning (DALs). Participants indicated the assignment helped them…

  7. 37 CFR 2.200 - Assignment records open to public inspection.

    Science.gov (United States)

    2010-07-01

    ... the Patent and Trademark Office § 2.200 Assignment records open to public inspection. (a)(1) Separate...) are open to public inspection at the Office, and copies of those assignment records may be obtained... 37 Patents, Trademarks, and Copyrights 1 2010-07-01 2010-07-01 false Assignment records open...

  8. The "Outsider/Insider" Assignment: A Pedagogical Innovation for Teaching Cross-Cultural Understanding

    Science.gov (United States)

    Garcia, Angela Cora

    2014-01-01

    In this paper, I describe an innovative assignment for teaching undergraduate students cross-cultural understanding. The Outsider/Insider assignment simultaneously teaches facts about cultural difference and skills for managing cross-cultural encounters. Briefly, the assignment is to write two short papers, one in which the student describes a…

  9. Integrating Academic Journal Review Assignments into a Graduate Business Leadership Course

    Science.gov (United States)

    Schultz, Jennifer L.; Agrimonti, Lisa M.; Higbee, Jeanne L.

    2016-01-01

    Graduate course assignments that are pragmatic, challenging, scaffold prior learning, and support academic career aspirations can be difficult to create and even more problematic to assess for even the most experienced faculty. This paper presents a class assignment that incorporated a real-world journal reviewing assignment into an elective…

  10. 20 CFR 234.61 - Assignment of interest by an eligible person.

    Science.gov (United States)

    2010-04-01

    ... RETIREMENT ACT LUMP-SUM PAYMENTS Miscellaneous § 234.61 Assignment of interest by an eligible person. (a) Any person who is eligible to receive a share of a lump-sum payment may assign his or her share to another... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Assignment of interest by an eligible...

  11. On the applicability of eigenvalue/eigenvector assignment in multivariable systems

    Science.gov (United States)

    Liberty, S. R.; Mielke, R. R.

    1979-01-01

    The technique of multivariable control-system design via assignment of the closed loop state matrix eigensystem is described. Features of this developing methodology include exact eigenvalue assignment, eigenvector assignment that approximates in a least squares sense a priori modal specifications, and an interactive design trade-off between the latter and desired eigensystem sensitivity with respect to plant parameters.

  12. Self-Paced Advanced Individual Training (AIT) and Duty Assignment Procedures.

    Science.gov (United States)

    Hunter, Harold; Wagner, Harold

    A study was made to (a) describe how self-paced Military Occupational Specialty (MOS) training affects the Army assignment system; (b) identify ways the existing assignment system can accommodate individualized instruction; and (c) suggest modifications to the assignment system to provide better integration of self-paced training with assignment…

  13. Geometric properties of satisfying assignments of random $\\epsilon$-1-in-k SAT

    CERN Document Server

    Istrate, Gabriel

    2008-01-01

    We study the geometric structure of the set of solutions of random $\\epsilon$-1-in-k SAT problem. For $l\\geq 1$, two satisfying assignments $A$ and $B$ are $l$-connected if there exists a sequence of satisfying assignments connecting them by changing at most $l$ bits at a time. We first prove that w.h.p. two assignments of a random $\\epsilon$-1-in-$k$ SAT instance are $O(\\log n)$-connected, conditional on being satisfying assignments. Also, there exists $\\epsilon_{0}\\in (0,\\frac{1}{k-2})$ such that w.h.p. no two satisfying assignments at distance at least $\\epsilon_{0}\\cdot n$ form a "hole" in the set of assignments. We believe that this is true for all $\\epsilon >0$, and thus satisfying assignments of a random 1-in-$k$ SAT instance form a single cluster.

  14. Implementation of an agile maintenance mechanic assignment methodology

    Science.gov (United States)

    Jimenez, Jesus A.; Quintana, Rolando

    2000-10-01

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

  15. Assignments of the Raman modes of monoclinic erbium oxide

    International Nuclear Information System (INIS)

    As a heavy rare earth oxide, erbium oxide (Er2O3) has many attractive properties. Monoclinic Er2O3 has useful properties not found in stable cubic Er2O3, such as unique optical properties and high radiation damage tolerance. In this study, cubic Er2O3 coating and Er2O3 coating with mixed phases were prepared. The Raman scattering spectra of these coatings were investigated by using a confocal micro-Raman spectrometer equipped with 325, 473, 514, 532, 633, and 784 nm lasers. A total of 17 first-order Raman modes of monoclinic Er2O3 were identified and assigned. The modes at 83, 112, 152, 170, 278, 290, 409, 446, 478, 521, 603, and 622 cm−1 are of Ag symmetry, whereas modes at 71, 98, 333, 409, 446, and 468 cm−1 are of Bg symmetry. This research provides basic data necessary for the characterization of monoclinic Er2O3 by Raman spectroscopy

  16. Glycoproteins and Glycosylation Site Assignments in Cereal seed Proteomes

    DEFF Research Database (Denmark)

    Dedvisitsakul, Plaipol

    The study of plant proteomes is important to further the understanding of biological processes and enhance the agronomical and nutritional value of crops and food products. To gain deeper understanding on the proteome level, it is important to characterize posttranslational modifications. Glycosy......The study of plant proteomes is important to further the understanding of biological processes and enhance the agronomical and nutritional value of crops and food products. To gain deeper understanding on the proteome level, it is important to characterize posttranslational modifications...... supplementing cotton wool with ZIC-HILIC in a microcolumn (called ZIC-cotton). This approach reduced co-enrichment of non-glycosylated peptides and allowed glycoppeptide identification from large protein mixtures. It was applied for glycoprotein identification and glycosylation site assignment in wheat albumin...... and barley aleurone layer proteins. By sitespecific glycosylation labeling and LC-MS/MS analysis, 76 different glycosylation sites within 65 wheat albumin proteins were identified using a combination of ZIC-cotton and cotton wool. In addition, ZIC-cotton has been also applied to proteins produced from...

  17. Methods of using the quadratic assignment problem solution

    Directory of Open Access Journals (Sweden)

    Izabela Kudelska

    2012-09-01

    Full Text Available Background: Quadratic assignment problem (QAP is one of the most interesting of combinatorial optimization. Was presented by Koopman and Beckamanna in 1957, as a mathematical model of the location of indivisible tasks. This problem belongs to the class NP-hard issues. This forces the application to the solution already approximate methods for tasks with a small size (over 30. Even though it is much harder than other combinatorial optimization problems, it enjoys wide interest because it models the important class of decision problems. Material and methods: The discussion was an artificial intelligence tool that allowed to solve the problem QAP, among others are: genetic algorithms, Tabu Search, Branch and Bound. Results and conclusions: QAP did not arise directly as a model for certain actions, but he found its application in many areas. Examples of applications of the problem is: arrangement of buildings on the campus of the university, layout design of electronic components in systems with large scale integration (VLSI, design a hospital, arrangement of keys on the keyboard.

  18. Imbalance in treatment assignments in stratified blocked randomization.

    Science.gov (United States)

    Hallstrom, A; Davis, K

    1988-12-01

    Blocking and stratification are used in preparing randomization assignments to ensure that there will be nearly equal numbers of patients in each treatment group and that the groups will be similar with respect to important covariates. Stratified blocked randomization will create near balance within strata, but imbalance for the total trial may still occur. The variance for the total trial imbalance D is derived and examples from clinical trials are given. Under reasonable assumptions, if the blocking factor is size B in each of K strata, then max D = KB/2 and var D = K(B + 1)/6. These results may be used in planning a trial to estimate the overall imbalance expected for various choices of B and K. A conditional variance is given that allows the probability of an observed imbalance at the completion of a trial to be evaluated. Overall imbalance is about as likely with stratified blocked randomization as with simple randomization unless the total sample size N is appreciably larger than K X B. So long as the blinding is maintained, the block sizes should be chosen to be as small as possible. PMID:3203527

  19. Handling Fragmented Database Replication through Binary Vote Assignment Grid Quorum

    Directory of Open Access Journals (Sweden)

    Ainul A.C. Fauzi

    2011-01-01

    Full Text Available Problem statement: Organizations critically needed to supply recent data to users who may be geographically remote, while at the same time handle a volume request of distributed data around multiple sites. The storage, availability and consistency are important issues to be addressed in order to allow distributed users efficiently and safely access data from many different sites. Approach: Data replication is a way to deal with this problem since it provides user with fast, local access to shared data and protects availability of applications because alternate data access options exist. Handling fragmented database replication becomes challenging issue to administrator since the distributed database was scattered into split replica partitions or fragments. Results: This study presented a new mechanism on how to handle the fragmented database replication through the Binary Vote Assignment on Grid Quorum (BVAGQ. We address how to build reliable system by using the proposed BVAGQ for distributed database fragmentation. Conclusion: The result shows that managing fragmented database replication and transaction through proposed BVAGQ is able to preserve the data consistency.

  20. Voids in Modified Gravity Reloaded: Eulerian Void Assignment

    CERN Document Server

    Lam, Tsz Yan; Cai, Yan-Chuan; Li, Baojiu

    2014-01-01

    We revisit the excursion set approach to calculate void abundances in chameleon-type modified gravity theories, which was previously studied by Clampitt, Cai and Li (2013). We focus on properly accounting for the void-in-cloud effect, i.e., the growth of those voids sitting in over-dense regions may be restricted by the evolution of their surroundings. This effect may change the distribution function of voids hence affect predictions on the differences between modified gravity and GR. We show that the thin-shell approximation usually used to calculate the fifth force is qualitatively good but quantitatively inaccurate. Therefore, it is necessary to numerically solve the fifth force in both over-dense and under-dense regions. We then generalise the Eulerian void assignment method of Paranjape, Lam and Sheth (2012) to our modified gravity model. We implement this method in our Monte Carlo simulations and compare its results with the original Lagrangian methods. We find that the abundances of small voids are sig...

  1. Traffic Route Modelling and Assignment with Intelligent Transport System

    Directory of Open Access Journals (Sweden)

    Kunicina Nadezhda

    2014-12-01

    Full Text Available The development of signal transmitting environment for multimodal traffic control will enhance the integration of emergency and specialized transport routing tools in usual traffic control paradigms - it is one of the opportunities offered by modern intelligent traffic control systems. The improvement of effective electric power use in public transport system is an advantage of Intelligent Transport System (ITS. The research is connected with the improvement of on-line traffic control and adaptation of special traffic lighting alternatives by ITS. The assignment of the nearest appropriate transport will be done by passenger request, but unlike information system, the transport planning is done on demand. The task can be solved with the help of modern technical methods and equipment, as well as by applying control paradigms of the distributed systems. The problem is solved with the help of calculations hyper-graph and scheduling theory. The goal of the research is to develop methods, which support scheduling of the emergency transport, using high performance computing.

  2. Robust Scheduling for Berth Allocation and Quay Crane Assignment Problem

    Directory of Open Access Journals (Sweden)

    M. Rodriguez-Molins

    2014-01-01

    Full Text Available Decision makers must face the dynamism and uncertainty of real-world environments when they need to solve the scheduling problems. Different incidences or breakdowns, for example, initial data could change or some resources could become unavailable, may eventually cause the infeasibility of the obtained schedule. To overcome this issue, a robust model and a proactive approach are presented for scheduling problems without any previous knowledge about incidences. This paper is based on proportionally distributing operational buffers among the tasks. In this paper, we consider the berth allocation problem and the quay crane assignment problem as a representative example of scheduling problems. The dynamism and uncertainty are managed by assessing the robustness of the schedules. The robustness is introduced by means of operational buffer times to absorb those unknown incidences or breakdowns. Therefore, this problem becomes a multiobjective combinatorial optimization problem that aims to minimize the total service time, to maximize the buffer times, and to minimize the standard deviation of the buffer times. To this end, a mathematical model and a new hybrid multiobjective metaheuristic is presented and compared with two well-known multiobjective genetic algorithms: NSGAII and SPEA2+.

  3. DESIGN SAMPLING AND REPLICATION ASSIGNMENT UNDER FIXED COMPUTING BUDGET

    Institute of Scientific and Technical Information of China (English)

    Loo Hay LEE; Ek Peng CHEW

    2005-01-01

    For many real world problems, when the design space is huge and unstructured, and time consuming simulation is needed to estimate the performance measure, it is important to decide how many designs to sample and how long to run for each design alternative given that we have only a fixed amount of computing time. In this paper, we present a simulation study on how the distribution of the performance measures and distribution of the estimation errors/noises will affect the decision.From the analysis, it is observed that when the underlying distribution of the noise is bounded and if there is a high chance that we can get the smallest noise, then the decision will be to sample as many as possible, but if the noise is unbounded, then it will be important to reduce the noise level first by assigning more replications for each design. On the other hand, if the distribution of the performance measure indicates that we will have a high chance of getting good designs, the suggestion is also to reduce the noise level, otherwise, we need to sample more designs so as to increase the chances of getting good designs. For the special case when the distributions of both the performance measures and noise are normal, we are able to estimate the number of designs to sample, and the number of replications to run in order to obtain the best performance.

  4. DRUG REGULATORY STATUS ASSIGNMENT CRITERIA: A CONTRAST AMONG 2 COUNTRIES

    Directory of Open Access Journals (Sweden)

    Anoop Paruchuri*, Vini Pavithran , M. Pavani , S. Selvamuthukumaran and G. P. Mohanta

    2013-01-01

    Full Text Available After a laborious and extravagant procedure the drug finally enters the market for use. But who determines the new drug status as a prescription only or an OTC? There is a clear cut contrast between the US and India with respect to their assignment guidelines and the future prospect of a new drug. In the US the regulatory status of the approved drug is determined as per the FDA guidelines (FDCA of 1938 in accordance with the Durham-Humphrey act of 1951 which depicts the criteria required for a pharmaceutical product to be marketed as a prescription drug or an OTC product. CDSCO headed by the DCGI is the authority responsible for determining the regulatory status which acts as per the regulations listed in Drugs and Cosmetics Act of 1940 in India. The US regulatory system stipulates the malleability for the inter conversion of the drugs regulatory status known as “Rx to OTC switch” which is deficient in India. Perfect implementation of regulations in India will promote effective use of OTC’s and forestall illicit sale of prescription drugs as OTC’s.

  5. A self-organizing CMAC network with gray credit assignment.

    Science.gov (United States)

    Yeh, Ming-Feng; Chang, Kuang-Chiung

    2006-06-01

    This paper attempts to incorporate the structure of the cerebellar-model-articulation-controller (CMAC) network into the Kohonen layer of the self-organizing map (SOM) to construct a self-organizing CMAC (SOCMAC) network. The proposed SOCMAC network can perform the function of an SOM and can distribute the learning error into the memory contents of all addressed hypercubes as a CMAC. The learning of the SOCMAC is in an unsupervised manner. The neighborhood region of the SOCMAC is implicit in the structure of a two-dimensional CMAC network and needs not be defined in advance. Based on gray relational analysis, a credit-assignment technique for SOCMAC learning is introduced to hasten the overall learning process. This paper also analyzes the convergence properties of the SOCMAC. It is shown that under the proposed updating rule, both the memory contents and the state outputs of the SOCMAC converge almost surely. The SOCMAC is applied to solve both data-clustering and data-classification problems, and simulation results show that the proposed network achieves better performance than other known SOMs. PMID:16761815

  6. Interference Aware Channel Assignment Scheme in Multichannel Wireless Mesh Networks

    Directory of Open Access Journals (Sweden)

    Sunmyeng Kim

    2013-04-01

    Full Text Available Wireless mesh networks (WMNs are gaining significant attention to provide wireless broadband service. Nodes in a wireless mesh network can communicate with each other directly or through one or more intermediate nodes. Because of multi-hop transmissions with multiple contending and compet¬ing channels, performance of wireless mesh networks decreases. Supporting high performance is an important challenge in multi-hop mesh networks. Nassiri et al. proposed a Molecular MAC protocol for autonomic assignment and use of multiple channels to improve network performance. In the Molecular MAC protocol, nodes are either nuclei or electrons in an atom. Neighboring atoms use orthogonal channels to operate in parallel data transmissions. Each nucleus selects an idle channel that is not currently being occupied by its neighboring atoms with the assistance from electrons in the same atom. However, this protocol has the following drawback; since a nucleus allocates a channel with help from the electrons in its own transmission range, it is not able to recognize the existence of those atoms in the interference range. Therefore, allocating the same channel to neighboring atoms results in the deterioration of network performance. In order to resolve this problem, we propose a channel allocation scheme with the interference issue taken into account. Based on various simulation results, the proposed scheme was verified that different channels could be allocated to those neighboring atoms in the interference range

  7. Cerebellar Synaptic Plasticity and the Credit Assignment Problem.

    Science.gov (United States)

    Jörntell, Henrik

    2016-04-01

    The mechanism by which a learnt synaptic weight change can contribute to learning or adaptation of brain function is a type of credit assignment problem, which is a key issue for many parts of the brain. In the cerebellum, detailed knowledge not only of the local circuitry connectivity but also of the topography of different sources of afferent/external information makes this problem particularly tractable. In addition, multiple forms of synaptic plasticity and their general rules of induction have been identified. In this review, we will discuss the possible roles of synaptic and cellular plasticity at specific locations in contributing to behavioral changes. Focus will be on the parts of the cerebellum that are devoted to limb control, which constitute a large proportion of the cortex and where the knowledge of the external connectivity is particularly well known. From this perspective, a number of sites of synaptic plasticity appear to primarily have the function of balancing the overall level of activity in the cerebellar circuitry, whereas the locations at which synaptic plasticity leads to functional changes in terms of limb control are more limited. Specifically, the postsynaptic forms of long-term potentiation (LTP) and long-term depression (LTD) at the parallel fiber synapses made on interneurons and Purkinje cells, respectively, are the types of plasticity that mediate the widest associative capacity and the tightest link between the synaptic change and the external functions that are to be controlled. PMID:25417189

  8. 49 CFR 173.116 - Class 2-Assignment of hazard zone.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Class 2-Assignment of hazard zone. 173.116 Section... for Hazardous Materials Other Than Class 1 and Class 7 § 173.116 Class 2—Assignment of hazard zone. (a) The hazard zone of a Class 2, Division 2.3 material is assigned in column 7 of the § 172.101...

  9. Job Assignment and the Gender Wage Differential: Theory and Evidence on Finnish Metalworkers

    OpenAIRE

    Vartiainen, Juhana

    1999-01-01

    We study the determinants of the gender wage differential by using a data set on Finnish blue-collar metalworkers. The assignment of men and women into jobs of different complexity is a key factor that widens the final wage differential. Using the theory of optimal job assignment, we propose a model of individual productivity, ability and job complexity and formulate a hypothesis of asymmetric assignment according to which men and women of equal ability are allocated to different job levels. ...

  10. HARDNESS RESULTS AND EFFICIENT APPROXIMATIONS FOR FREQUENCY ASSIGNMENT PROBLEMS: RADIO LABELLING AND RADIO COLORING

    OpenAIRE

    Fotakis, D.A.; S. E. Nikoletseas; V. G. Papadopoulou; Spirakis, P.G.

    2012-01-01

    The Frequency Assignment Problem (FAP) in radio networks is the problem of assigning frequencies to transmitters, exploiting frequency reuse while keeping signal interference to acceptable levels. The FAP is usually modeled by variations of graph coloring. In this work we first survey the variations of the FAP and then we study two (similar but still different) frequency assignment problems: radio labelling and radiocoloring. For radio labelling, we prove that the problem is NP-complete for g...

  11. Evaluating SNP ascertainment bias and its impact on population assignment in Atlantic cod, Gadus morhua.

    Science.gov (United States)

    Bradbury, Ian R; Hubert, Sophie; Higgins, Brent; Bowman, Sharen; Paterson, Ian G; Snelgrove, Paul V R; Morris, Corey J; Gregory, Robert S; Hardie, David C; Borza, Tudor; Bentzen, Paul

    2011-03-01

    The increasing use of single nucleotide polymorphisms (SNPs) in studies of nonmodel organisms accentuates the need to evaluate the influence of ascertainment bias on accurate ecological or evolutionary inference. Using a panel of 1641 expressed sequence tag-derived SNPs developed for northwest Atlantic cod (Gadus morhua), we examined the influence of ascertainment bias and its potential impact on assignment of individuals to populations ranging widely in origin. We hypothesized that reductions in assignment success would be associated with lower diversity in geographical regions outside the location of ascertainment. Individuals were genotyped from 13 locations spanning much of the contemporary range of Atlantic cod. Diversity, measured as average sample heterozygosity and number of polymorphic loci, declined (c. 30%) from the western (H(e) = 0.36) to eastern (H(e) = 0.25) Atlantic, consistent with a signal of ascertainment bias. Assignment success was examined separately for pools of loci representing differing degrees of reductions in diversity. SNPs displaying the largest declines in diversity produced the most accurate assignment in the ascertainment region (c. 83%) and the lowest levels of correct assignment outside the ascertainment region (c. 31%). Interestingly, several isolated locations showed no effect of assignment bias and consistently displayed 100% correct assignment. Contrary to expectations, estimates of accurate assignment range-wide using all loci displayed remarkable similarity despite reductions in diversity. Our results support the use of large SNP panels in assignment studies of high geneflow marine species. However, our evidence of significant reductions in assignment success using some pools of loci suggests that ascertainment bias may influence assignment results and should be evaluated in large-scale assignment studies. PMID:21429176

  12. Nonspecificity degrees of basic probability assignments in dempster-shafer theory

    OpenAIRE

    Kramosil, I. (Ivan)

    2012-01-01

    Basic probability assignment is a probability distribution on the power-set  (set of all subsets) of a finite set S and the nonspecificity degree of this basic probability assignment is the normalized expected value of the size (cardinality) of subsets of S with respect to this probability distribution. This notion enables to express formally and to prove the intuitive feelings of improving one's basic probability assignment and belief function when combining it with another one by the D...

  13. Expatriate assignments and intra-organizational career success: implications for individuals and organizations

    OpenAIRE

    Mark C Bolino

    2007-01-01

    Anecdotal accounts and reports in the popular press often suggest that international assignments are critical for employees who seek to move up the career ladder more quickly. Nevertheless, previous research on repatriation indicates that many former expatriates feel that their overseas assignments have harmed, rather than helped, their careers. Relatively little research, though, has sought to understand how expatriate assignments might be related to career success. This paper, then, present...

  14. Spin assignment of the first discovered superdeformed band 152Dy(1)

    Institute of Scientific and Technical Information of China (English)

    雷奕安; 曾谨言

    1996-01-01

    Using the several criteria for the spin assignment of a rotational band based on very general argument,the spin of the lowest level observed in the yrast SD band 152Dy(1) is assigned to be I0=26(Eγ(I0+2→I0)=602.4keV),and it is demonstrated that spin assignments of I0≤25 as well as I-≥27 are in contradiction with these criteria.

  15. FAN EMPIRICAL STUDY OF THE RELATIONSHIP BETWEEN ASSIGNMENT PRACTICES IN TRAINING PROGRAMS AND TRAINING MOTIVATION

    OpenAIRE

    AZMAN Ismail; MUHAMMAD ZULFADHLIZAM Ghazali; YUSOF Ismail; MOHD HASBULLAH Mohamad Faudzi; MOHD MURSYID Arshad

    2012-01-01

    The purpose of this study was to measure the relationship between training assignment and training motivation using self-report questionnaires collected from cadet officers in a military training academy, Malaysia. The outcomes of testing hypothesis using a stepwise regression analysis showed two important findings: firstly, mandatory assignment is significantly correlated with training motivation. Secondly, voluntary assignment is also significantly correlated with training motivation. This ...

  16. Structuring asynchronous discussion groups by introducing roles: do students act in line with assigned roles?

    OpenAIRE

    Wever, Bram De; Schellens, Tammy; Van Keer, Hilde; Valcke, Martin

    2008-01-01

    This study focused on the introduction of roles as a scripting tool in asynchronous text-based discussion groups. Five roles were selected: source searcher, theoretician, summarizer, moderator, and starter. Because existing research on role assignment often neglects to check whether the role assignment is successful, the main goal was to examine to what extent the participants enacted assigned roles. The study took place in the 1st year of a university course in Instructional Sciences (N = 20...

  17. The Tactical Berth Allocation Problem with QC Assignment and Transshipment Costs

    OpenAIRE

    Giallombardo, Giovanni; Moccia, Luigi; Salani, Matteo; Vacca, Ilaria

    2009-01-01

    In this work we integrate at the tactical level two decision problems arising in container terminals: the berth allocation problem, which consists of assigning and scheduling incoming ships to berthing positions, and the quay crane assignment problem, which assigns to incoming ships a certain QC profile (i.e. number of quay cranes per working shift). We present two formulations: a mixed integer quadratic program and a linearization which reduces to a mixed integer linear program. The objectiv...

  18. Task Selection for Bandit-Based Task Assignment in Heterogeneous Crowdsourcing

    OpenAIRE

    Zhang, Hao; Sugiyama, Masashi

    2015-01-01

    Task selection (picking an appropriate labeling task) and worker selection (assigning the labeling task to a suitable worker) are two major challenges in task assignment for crowdsourcing. Recently, worker selection has been successfully addressed by the bandit-based task assignment (BBTA) method, while task selection has not been thoroughly investigated yet. In this paper, we experimentally compare several task selection strategies borrowed from active learning literature, and show that the ...

  19. The Assignment of Property Rights on the Western Frontier: Lessons for Contemporary Environmental and Resource Policy

    OpenAIRE

    Libecap, Gary D.

    2006-01-01

    In addressing environmental and natural resource problems, there is a move away from primary reliance upon centralized regulation toward assignment of property rights to mitigate the losses of open-access. I examine the assignment of private property rights during the 19th and early 20th centuries to five natural resources, mineral land, timberland, grazing and farm land, and water on federal government lands in the Far West. The region was richly endowed with natural resources, but assigning...

  20. Temporal and spatial spectrum assignment in next generation OFDMA networks through reinforcement learning

    OpenAIRE

    Bernardo F.; Agusti R.; Perez-Romero J.; Salient O.

    2009-01-01

    This paper proposes a Dynamic Spectrum Assignment strategy in the context of next generation multicell Orthogonal Frequency Division Multiple Access networks. The proposed strategy is able to dynamically find spectrum assignments per cell depending on the spatial and temporal distribution of the users over the scenario. Reinforcement Learning methodology has been employed to implement the strategy, which compared with other fixed and dynamic spectrum assignment strategies shows the b...

  1. Permutation codes for the state assignment of fault tolerant sequential machines

    Science.gov (United States)

    Chen, M.; Trachtenberg, E. A.

    1991-01-01

    A new fault-tolerant state assignment method is suggested for synchronous sequential machines. It is assumed that the inputs are fault free and that for no input it is possible to reach all or most of the states, whose number may be fairly large. Error correcting codes for the state assignment are generated by permutations of a chosen linear code. A state assignment algorithm is developed and its computational complexity is estimated. Examples are given.

  2. Cue competition affects temporal dynamics of edge-assignment in human visual cortex

    OpenAIRE

    Brooks, Joseph L.; Palmer, Stephen E.

    2011-01-01

    Edge-assignment determines the perception of relative depth across an edge and the shape of the closer side. Many cues determine edge-assignment, but relatively little is known about the neural mechanisms involved in combining these cues. Here, we manipulated extremal edge and attention cues to bias edge-assignment such that these two cues either cooperated or competed. To index their neural representations, we flickered figure and ground regions at different frequencies and measured the corr...

  3. How do Training Programs Assign Participants to Training? Characterizing the Assignment Rules of Government Agencies for Welfare-to-Work Programs in California

    OpenAIRE

    Oscar A. Mitnik

    2008-01-01

    A great deal of attention has been paid in the literature to estimating the impacts of training programs. Much less attention has been devoted to how training agencies assign participants to training programs, and to how these allocation decisions vary with agency resources, the initial skill levels of participants and the prevailing labor market conditions. This paper models the training assignment problem faced by welfare agencies, deriving empirical implications regarding aggregate trainin...

  4. How Do Training Programs Assign Participants to Training? Characterizing the Assignment Rules of Government Agencies for Welfare-to-Work Programs in California

    OpenAIRE

    Oscar A. Mitnik

    2009-01-01

    A great deal of attention has been paid in the literature to estimating the impacts of training programs. Much less attention has been devoted to how training agencies assign participants to training programs, and to how these allocation decisions vary with agency resources, the initial skill levels of participants and the prevailing labor market conditions. This paper models the training assignment problem faced by welfare agencies, deriving empirical implications regarding aggregate trainin...

  5. 41 CFR 102-75.665 - What happens after the disposal agency receives the assignment recommendation from DOI?

    Science.gov (United States)

    2010-07-01

    ... disposal agency receives the assignment recommendation from DOI? 102-75.665 Section 102-75.665 Public... assignment recommendation from DOI? If, after considering other uses for the property, the disposal agency approves the assignment recommendation from DOI, it must assign the property by letter or other document...

  6. Programming Assignment of Programming 3: an Object-Oriented Version of Conway’s Game of Life

    OpenAIRE

    Rizo Valero, David; Ponce de León Amador, Pedro José; Pérez-Ortiz, Juan Antonio

    2014-01-01

    These are the instructions for a programming assignment of the subject Programming 3 taught at University of Alicante in Spain. The objective of the assignment is to build an object-oriented version of Conway's game of life in Java. The assignment is divided into four sub-assignments.

  7. In Search of the Epiphany of Homework Assignments: A Model of Evaluating Local Schools' Homework Practices

    Science.gov (United States)

    Saam, Julie; Jeong, Taekhil

    2013-01-01

    Some parents and students perceived demanding homework assignments as a frequent source of grievance, particularly for those high performing students who want spare time for independent study and cultivation of talents through extracurricular activities. Teachers tended to perceive homework assignments as a meaningful extension of instruction time…

  8. The Effects of Participative versus Assigned Goal Setting on Intrinsic Motivation.

    Science.gov (United States)

    Chang, Grace Shing-Yung; Lorenzi, Peter

    1983-01-01

    Investigated the effects of participative versus assigned goal setting on intrinsic motivation for interesting and boring tasks. Participative and assigned goal setting had no significantly different effects on performance if the goal was held consistently difficult, but had different effects on intrinsic motivation at different levels of task…

  9. 14 CFR 1214.105 - Apportionment and/or assignment of services.

    Science.gov (United States)

    2010-01-01

    ... and/or assignment of Shuttle services may take place outside the payload. (b) Integration of... assistance in such integration will be provided as an optional service. (c) Customers intending to apportion... 14 Aeronautics and Space 5 2010-01-01 2010-01-01 false Apportionment and/or assignment of...

  10. 47 CFR 36.153 - Assignment of Cable and Wire Facilities (C&WF) to categories.

    Science.gov (United States)

    2010-10-01

    ... included with the poles. (2) Poles. (i) The cost of poles is assigned to categories based on the ratio of... percentage used in the related cable assignment are applicable, or (B) By pricing out each category by... TELECOMMUNICATIONS PROPERTY COSTS, REVENUES, EXPENSES, TAXES AND RESERVES FOR TELECOMMUNICATIONS COMPANIES...

  11. 47 CFR 1.9055 - Assignment of file numbers to spectrum leasing notifications and applications.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false Assignment of file numbers to spectrum leasing... GENERAL PRACTICE AND PROCEDURE Spectrum Leasing General Policies and Procedures § 1.9055 Assignment of file numbers to spectrum leasing notifications and applications. Spectrum leasing notifications...

  12. Power of Peer Review: An Online Collaborative Learning Assignment in Social Psychology

    Science.gov (United States)

    Cathey, Christie

    2007-01-01

    In a semester-long, peer review assignment, undergraduates enrolled in a social psychology course wrote essays that applied course concepts to life experiences. Students anonymously posted essays for the entire class to view, and peers posted commentaries on classmates' essays using an online discussion board. Students rated the assignment as…

  13. Assessing an Information Literacy Assignment and Workshop Using a Quasi-Experimental Design

    Science.gov (United States)

    Fitzpatrick, Maureen J.; Meulemans, Yvonne Nalani

    2011-01-01

    To determine the impact of an assignment and workshop intended to increase students' information literacy skills, we conducted a quasi-experiment using a pretest-posttest assessment with undergraduate students in four sections of an introduction to developmental psychology course. Two sections (N = 81) received the assignment and instructions…

  14. 46 CFR 69.173 - Tonnage assignments for vessels with only one deck.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 2 2010-10-01 2010-10-01 false Tonnage assignments for vessels with only one deck. 69... with only one deck. A vessel without a second deck is assigned only one gross and one net tonnage. In calculating the gross tonnage, only the exemptions in § 69.169 (a) through (d) are allowed. Markings...

  15. 19 CFR 142.46 - Presentation of invoice and assignment of entry number.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 2 2010-04-01 2010-04-01 false Presentation of invoice and assignment of entry... SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) ENTRY PROCESS Line Release § 142.46 Presentation of invoice and assignment of entry number. (a) Presentation of invoice. When merchandise that has...

  16. Analysis and Characterization of State AssignmentTechniques for Sequential Machines

    OpenAIRE

    Makki, R. Z.; Su, S.

    1994-01-01

    In this paper, we study the problem of state assignment as it relates to silicon area, propagation delay time and testability of finite state machines. The results of a study involving various FSM benchmarks show that the simple technique of one-hot encoding often produces better results than those attained by complex state assignment algorithms.

  17. 37 CFR 1.12 - Assignment records open to public inspection.

    Science.gov (United States)

    2010-07-01

    ... Records and Files of the Patent and Trademark Office § 1.12 Assignment records open to public inspection..., are open to public inspection at the United States Patent and Trademark Office, and copies of patent... 37 Patents, Trademarks, and Copyrights 1 2010-07-01 2010-07-01 false Assignment records open...

  18. NEW CRITERIA FOR ASSIGNING WASTE CONTAINING TECH-NOGENIC RADIONUCLIDES TO THE RADIOACTIVE WASTE

    OpenAIRE

    I. K. Romanovich; M. I. Balonov; Barkovsky, A.N.

    2016-01-01

    The article contains detailed description of criteria for assigning of liquid and gaseous industrial waste containing technogenicradionuclides to the radioactive waste, presented in the new Basic Sanitary Rulesof Radiation Safety (OSPORB-99/2010). The analysisof shortcomings and discrepancies of the previously used in Russia system of criteria for assigning waste to the radioactive waste is given.

  19. What Strategies Do Resistive Readers Use to Fake Their Way through School Assigned Texts?

    Science.gov (United States)

    Krieger, Courtney M.

    2012-01-01

    A trend among adolescent readers is the practice of fake-reading. Fake-reading occurs when students who can read choose not to, and develop strategies to fake their way through school-assigned texts to earn good grades. This study examines four resistive readers, or fake-readers, assigned to read Neal Shusterman's "Unwind" (2007)…

  20. The Designer-by-Assignment in Practice: Instructional Design Thinking of Subject Matter Experts

    Science.gov (United States)

    Pesce, Sandra V.

    2012-01-01

    Designers-by-assignment, or subject matter experts (SMEs) who are pressed into training service, have become common in the workplace. A review of more than 24 studies on expert and novice instructional designers, however, revealed that little is known about how designers-by-assignment think about design and make design decisions in the field. A…

  1. Optimisation of timetable-based, stochastic transit assignment models based on MSA

    DEFF Research Database (Denmark)

    Nielsen, Otto Anker; Frederiksen, Rasmus Dyhr

    2006-01-01

    (CRM), such a large-scale transit assignment model was developed and estimated. The Stochastic User Equilibrium problem was solved by the Method of Successive Averages (MSA). However, the model suffered from very large calculation times. The paper focuses on how to optimise transit assignment models...

  2. 24 CFR 203.404 - Amount of payment-assigned mortgages.

    Science.gov (United States)

    2010-04-01

    ... HOUSING AND URBAN DEVELOPMENT MORTGAGE AND LOAN INSURANCE PROGRAMS UNDER NATIONAL HOUSING ACT AND OTHER AUTHORITIES SINGLE FAMILY MORTGAGE INSURANCE Contract Rights and Obligations Payment of Insurance Benefits § 203.404 Amount of payment—assigned mortgages. Upon an acceptable assignment of a mortgage,...

  3. A Web Support System for Submission and Handling of Programming Assignments

    DEFF Research Database (Denmark)

    Nørmark, Kurt

    2011-01-01

    Individual submission of programming assignments should be considered in all introductory programming courses. We describe a custom web support system for submission and management of programming assignments in an introductory C programming course. Experience from the first time use of the system...

  4. The "Post-Racial" Politics of Race: Changing Student Assignment Policy in Three School Districts

    Science.gov (United States)

    McDermott, Kathryn A.; Frankenberg, Erica; Diem, Sarah

    2015-01-01

    Many school districts have recently revised, or tried to revise, their policies for assigning students to schools, because the legal and political status of racial and other kinds of diversity is uncertain, and the districts are facing fiscal austerity. This article presents case studies of politics and student assignment policy in three large…

  5. A Comparison of Electronic and Paper-Based Assignment Submission and Feedback

    Science.gov (United States)

    Bridge, Pete; Appleyard, Rob

    2008-01-01

    This paper presents the results of a study evaluating student perceptions of online assignment submission. 47 students submitted assignments and received feedback via features within the Virtual Learning Environment Blackboard[TM]. The students then completed questionnaires comparing their experience of online submission and feedback with…

  6. Automated assignment of NMR chemical shifts based on a known structure and 4D spectra.

    Science.gov (United States)

    Trautwein, Matthias; Fredriksson, Kai; Möller, Heiko M; Exner, Thomas E

    2016-08-01

    Apart from their central role during 3D structure determination of proteins the backbone chemical shift assignment is the basis for a number of applications, like chemical shift perturbation mapping and studies on the dynamics of proteins. This assignment is not a trivial task even if a 3D protein structure is known and needs almost as much effort as the assignment for structure prediction if performed manually. We present here a new algorithm based solely on 4D [(1)H,(15)N]-HSQC-NOESY-[(1)H,(15)N]-HSQC spectra which is able to assign a large percentage of chemical shifts (73-82 %) unambiguously, demonstrated with proteins up to a size of 250 residues. For the remaining residues, a small number of possible assignments is filtered out. This is done by comparing distances in the 3D structure to restraints obtained from the peak volumes in the 4D spectrum. Using dead-end elimination, assignments are removed in which at least one of the restraints is violated. Including additional information from chemical shift predictions, a complete unambiguous assignment was obtained for Ubiquitin and 95 % of the residues were correctly assigned in the 251 residue-long N-terminal domain of enzyme I. The program including source code is available at https://github.com/thomasexner/4Dassign . PMID:27484442

  7. Organic Chemistry YouTube Writing Assignment for Large Lecture Classes

    Science.gov (United States)

    Franz, Annaliese K.

    2012-01-01

    This work describes efforts to incorporate and evaluate the use of a YouTube writing assignment in large lecture classes to personalize learning and improve conceptual understanding of chemistry through peer- and self-explanation strategies. Although writing assignments can be a method to incorporate peer- and self-explanation strategies, this…

  8. NEW CRITERIA FOR ASSIGNING WASTE CONTAINING TECH-NOGENIC RADIONUCLIDES TO THE RADIOACTIVE WASTE

    Directory of Open Access Journals (Sweden)

    I. K. Romanovich

    2010-01-01

    Full Text Available The article contains detailed description of criteria for assigning of liquid and gaseous industrial waste containing technogenicradionuclides to the radioactive waste, presented in the new Basic Sanitary Rulesof Radiation Safety (OSPORB-99/2010. The analysisof shortcomings and discrepancies of the previously used in Russia system of criteria for assigning waste to the radioactive waste is given.

  9. The Process of Stress Assignment in Reading Aloud: Critical Issues from Studies on Italian

    Science.gov (United States)

    Sulpizio, Simone; Burani, Cristina; Colombo, Lucia

    2015-01-01

    In polysyllabic languages the assignment of stress is crucial for understanding the reading process. Here we review empirical evidence, drawn mainly from studies on Italian, and discuss critical issues in understanding reading. We first discuss the lexical and sublexical mechanisms responsible for stress assignment and propose that the former is…

  10. Incorporating Women and Crime Topics into Criminology Classes: Assignments, Exercises, and Projects.

    Science.gov (United States)

    Wright, Richard A.

    1987-01-01

    Recommends a variety of books, assignments, exercises, and projects which can be incorporated into introductory criminology classes to compensate for the omission of topics on women and crime in textbooks and curricula. Includes a list of potential topics for writing assignments and a selection of films covering such topics as sexual harassment,…

  11. Investigating Expectations and Experiences of Audio and Written Assignment Feedback in First-Year Undergraduate Students

    Science.gov (United States)

    Fawcett, Hannah; Oldfield, Jeremy

    2016-01-01

    Previous research suggests that audio feedback may be an important mechanism for facilitating effective and timely assignment feedback. The present study examined expectations and experiences of audio and written feedback provided through "turnitin for iPad®" from students within the same cohort and assignment. The results showed that…

  12. 26 CFR 26.2651-2 - Individual assigned to more than 1 generation.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 14 2010-04-01 2010-04-01 false Individual assigned to more than 1 generation... (CONTINUED) ESTATE AND GIFT TAXES GENERATION-SKIPPING TRANSFER TAX REGULATIONS UNDER THE TAX REFORM ACT OF 1986 § 26.2651-2 Individual assigned to more than 1 generation. (a) In general. Except as provided...

  13. A Useful Metaheuristic for Dynamic Channel Assignment in Mobile Cellular Systems

    Directory of Open Access Journals (Sweden)

    Deepak Kumar Singh

    2012-09-01

    Full Text Available The prime objective of a Channel Assignment Problem (CAP is to assign appropriate number of required channels to each cell in a way to achieve both efficient frequency spectrum utilization and minimization of interference effects (by satisfying a number of channel reuse constraints. Dynamic Channel Assignment (DCA assigns the channels to the cells dynamically according to traffic demand, and hence, can provide higher capacity (or lower call blocking probability, fidelity and quality of service than the fixed assignment schemes. Channel assignment algorithms are formulated as combinatorial optimization problems and are NP-hard. Devising a DCA, that is practical, efficient, and which can generate high quality assignments, is challenging. Though Metaheuristic Search techniques like Evolutionary Algorithms, Differential Evolution, Particle Swarm Optimization prove effective in the solution of Fixed Channel Assignment (FCA problems but they still require high computational time and therefore may be inefficient for DCA. A number of approaches have been proposed for the solution of DCA problem but the high complexity of these proposed approaches makes them unsuitable/less efficient for practical use. Therefore, this paper presents an effective and efficient Hybrid Discrete Binary Differential Evolution Algorithm (HDB-DE for the solution of DCA Problem

  14. 3 CFR - Establishment of the Interagency Committee on Trade in Timber Products from Peru and Assignment...

    Science.gov (United States)

    2010-01-01

    ... in Timber Products from Peru and Assignment of Function under Section 501 of the United States-Peru... Memorandum of May 1, 2009 Establishment of the Interagency Committee on Trade in Timber Products from Peru and Assignment of Function under Section 501 of the United States-Peru Trade Promotion...

  15. Kiva Microloans in a Learning Community: An Assignment for Interdisciplinary Synthesis

    Science.gov (United States)

    Staats, Susan; Sintjago, Alfonso; Fitzpatrick, Renata

    2013-01-01

    Learning communities can strengthen early undergraduates' learning, but planning them can be daunting for instructors. Learning communities usually rely on integrative assignments that encourage interdisciplinary analysis. This article reports on our experiences using microloans as an interdisciplinary assignment in a learning community that…

  16. An Empirical Examination of the Roles of Ability and Gender in Collaborative Homework Assignments

    Science.gov (United States)

    Parker, Jeffrey

    2010-01-01

    The author investigates how ability and gender affect grades on homework projects performed by assigned pairs of students in an undergraduate macroeconomics course. The assignment grade is found to depend on the ability of both students, and the relative importance of the stronger and weaker student differs in predictable ways depending on the…

  17. Heuristic file sorted assignment algorithm of parallel I/O on cluster computing system

    Institute of Scientific and Technical Information of China (English)

    CHEN Zhi-gang; ZENG Bi-qing; XIONG Ce; DENG Xiao-heng; ZENG Zhi-wen; LIU An-feng

    2005-01-01

    A new file assignment strategy of parallel I/O, which is named heuristic file sorted assignment algorithm was proposed on cluster computing system. Based on the load balancing, it assigns the files to the same disk according to the similar service time. Firstly, the files were sorted and stored at the set I in descending order in terms of their service time, then one disk of cluster node was selected randomly when the files were to be assigned, and at last the continuous files were taken orderly from the set I to the disk until the disk reached its load maximum. The experimental results show that the new strategy improves the performance by 20.2% when the load of the system is light and by 31.6% when the load is heavy. And the higher the data access rate, the more evident the improvement of the performance obtained by the heuristic file sorted assignment algorithm.

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

    Science.gov (United States)

    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.

  19. Towards an intelligent system for the automatic assignment of domains in globular proteins.

    Science.gov (United States)

    Sternberg, M J; Hegyi, H; Islam, S A; Luo, J; Russell, R B

    1995-01-01

    The automatic identification of protein domains from coordinates is the first step in the classification of protein folds and hence is required for databases to guide structure prediction. Most algorithms encode a single concept based and sometimes do not yield assignments that are consistent with the generally accepted perception. Our development of an automatic approach to identify reliably domains from protein coordinates is described. The algorithm is benchmarked against a manual identification of the domains in 284 representative protein chains. The first step is the domain assignment by distance (DAD) algorithm that considers the density of inter-residue contacts represented in a contact matrix. The algorithm yields 85% agreement with the manual assignment. The paper then considers how the reliability of these assignments could be evaluated. Finally the use of structural comparisons using the STAMP algorithm to validate domain assignment is reported on a test case. PMID:7584461

  20. [Rapid assessment of critical quality attributes of Chinese materia medica (II): strategy of NIR assignment].

    Science.gov (United States)

    Pei, Yan-Ling; Wu, Zhi-Sheng; Shi, Xin-Yuan; Zhou, Lu-Wei; Qiao, Yan-Jiang

    2014-09-01

    The present paper firstly reviewed the research progress and main methods of NIR spectral assignment coupled with our research results. Principal component analysis was focused on characteristic signal extraction to reflect spectral differences. Partial least squares method was concerned with variable selection to discover characteristic absorption band. Two-dimensional correlation spectroscopy was mainly adopted for spectral assignment. Autocorrelation peaks were obtained from spectral changes, which were disturbed by external factors, such as concentration, temperature and pressure. Density functional theory was used to calculate energy from substance structure to establish the relationship between molecular energy and spectra change. Based on the above reviewed method, taking a NIR spectral assignment of chlorogenic acid as example, a reliable spectral assignment for critical quality attributes of Chinese materia medica (CMM) was established using deuterium technology and spectral variable selection. The result demonstrated the assignment consistency according to spectral features of different concentrations of chlorogenic acid and variable selection region of online NIR model in extract process. Although spectral assignment was initial using an active pharmaceutical ingredient, it is meaningful to look forward to the futurity of the complex components in CMM. Therefore, it provided methodology for NIR spectral assignment of critical quality attributes in CMM. PMID:25532332

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

    Science.gov (United States)

    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.

  2. Solving Benchmark Frequency Assignment Problem of Helsinki Regions Network by a Novel Nature Inspired Algorithm

    Directory of Open Access Journals (Sweden)

    Avtar Singh Buttar

    2013-03-01

    Full Text Available The Frequency Assignment Problem is assignment of frequencies or channels to establish link between base station and mobile transmitter in cellular system. To avoid interference, minimum separation between assigned frequencies is required. This problem is NP-hard. Due to limited availability of spectrum and reuse of same frequencies at different geographical locations, an excellent assignment is to be done, which must satisfy electromagnetic constraints with respect to demand in each cell. This paper presents a novel DGWCHD algorithm for frequency assignment problem in cellular radio networks. The objective is to assign the frequency satisfying electromagnetic constraints for given demand with minimum use of frequency bandwidth. The proposed algorithm is based on real wild animal such as dog’s intelligent strategies during chasing and hunting their prey. The proposed algorithm is implemented on benchmark Kunz’s test problems, which are practical FAP problems based on area around 25 regions in Helsinki, Finland. The DGWCHD algorithm has been used for call ordering and FEA strategy for assignment. The performance of the proposed novel DGWCHD algorithm has been compared with other nature inspired techniques. The results obtained are very optimistic and encouraging

  3. Comprehensive paternity assignment: genotype, spatial location and social status in song sparrows, Melospiza Melodia.

    Science.gov (United States)

    Sardell, Rebecca J; Keller, Lukas F; Arcese, Peter; Bucher, Thomas; Reid, Jane M

    2010-10-01

    Comprehensive, accurate paternity assignment is critical to answering numerous questions in evolutionary ecology. Yet, most studies of species with extra-pair paternity (EPP) fail to assign sires to all offspring. Common limitations include incomplete and biased sampling of offspring and males, particularly with respect to male location and social status, potentially biasing estimated patterns of paternity. Studies that achieve comprehensive sampling and paternity assignment are therefore required. Accordingly, we genotyped virtually all males and >99% of 6-day-old offspring over 16 years in a song sparrow (Melospiza melodia) population and used three complementary statistical methodologies to attempt complete paternity assignment for all 2207 offspring. Assignments were highly consistent across maximum likelihood methods that used solely genotype data, and heuristic and integrated Bayesian analyses that included data describing individual locations. Sires were assigned to >99% of all genotyped offspring with ≥95% confidence, revealing an EPP rate of c. 28%. Extra-pair sires primarily occupied territories neighbouring their extra-pair offspring; spatial location was therefore highly informative for paternity assignment. EPP was biased towards paired territorial males, although unpaired territorial and floater males sired c. 13% of extra-pair offspring. Failing to sample and include unpaired males as candidate sires would therefore substantially reduce assignment rates. These analyses demonstrate the integration of genetic and ecological information to achieve comprehensive paternity assignment and direct biological insight, illustrate the potential biases that common forms of incomplete sampling could have on estimated patterns of EPP, and provide an essential basis for understanding the evolutionary causes and consequences of EPP. PMID:20819155

  4. Neurodynamics-Based Robust Pole Assignment for High-Order Descriptor Systems.

    Science.gov (United States)

    Le, Xinyi; Wang, Jun

    2015-11-01

    In this paper, a neurodynamic optimization approach is proposed for synthesizing high-order descriptor linear systems with state feedback control via robust pole assignment. With a new robustness measure serving as the objective function, the robust eigenstructure assignment problem is formulated as a pseudoconvex optimization problem. A neurodynamic optimization approach is applied and shown to be capable of maximizing the robust stability margin for high-order singular systems with guaranteed optimality and exact pole assignment. Two numerical examples and vehicle vibration control application are discussed to substantiate the efficacy of the proposed approach. PMID:26357408

  5. Danish Public Construction Counselling Selection and Assignment Criteria in European Tendering

    DEFF Research Database (Denmark)

    Larsen, Jesper Kranker; Ussing, Lene Faber; Brunø, Thomas Ditlev

    2014-01-01

    One of the largest customers in the Danish construction industry is public agencies that own and develop projects. For some of the counselling services, they recur to be put out in European tendering. The aim is to find which selection and assignment criteria are used most in public tendering. How...... projects use selection and assignment criteria for counselling services and finally if there is significant use of selection and assignment methods in public counselling. The method is based on 74 public counselling tenders from the European Tenders Electronic Daily database from January 2010 to March 2013...... public counselling services....

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

    Science.gov (United States)

    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 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

  7. The Effect of Major League Baseball Rehab Assignments on Attendance in the International Baseball League

    OpenAIRE

    Andrew Turner

    2013-01-01

    Prior to his return from the disabled list, a Major League Baseball (MLB) player may be given a "rehab assignment" to a Minor League Baseball (MiLB) club. One can intuitively expect that successful MLB players should positively affect attendance at the MiLB clubs that they are assigned to. This study develops a regression model to determine the effect of MLB rehab assignments on attendance in the International Baseball League. The regression model also introduces a new technique to measure th...

  8. Vibrational Circular Dichroism: Recent Advances for the Assignment of the Absolute Configuration of Natural Products.

    Science.gov (United States)

    Burgueño-Tapia, Eleuterio; Joseph-Nathan, Pedro

    2015-10-01

    Vibrational circular dichroism (VCD) emerged during the last decade as a reliable tool for the absolute configuration (AC) determination of organic compounds. The principles, instrumentation, and methodology applied prior to early 2013 were recently reviewed by us. Since VCD is a very dynamic field, the aim of this review is to update VCD advances for the AC assignment of terpenoids, aromatic compounds, alkaloids, and other natural products for the 2013-2014 period, when VCD was applied to the AC assignment of some 70 natural products. In addition, although discovered in 2012, a brief introduction to the VCD exciton coupling approach and its applications in natural products AC assignment is presented. PMID:26669125

  9. Assigning large proteins in the solid state: a MAS NMR resonance assignment strategy using selectively and extensively 13C-labelled proteins

    International Nuclear Information System (INIS)

    In recent years, solid-state magic-angle spinning nuclear magnetic resonance spectroscopy (MAS NMR) has been growing into an important technique to study the structure of membrane proteins, amyloid fibrils and other protein preparations which do not form crystals or are insoluble. Currently, a key bottleneck is the assignment process due to the absence of the resolving power of proton chemical shifts. Particularly for large proteins (approximately >150 residues) it is difficult to obtain a full set of resonance assignments. In order to address this problem, we present an assignment method based upon samples prepared using [1,3-13C]- and [2-13C]-glycerol as the sole carbon source in the bacterial growth medium (so-called selectively and extensively labelled protein). Such samples give rise to higher quality spectra than uniformly [13C]-labelled protein samples, and have previously been used to obtain long-range restraints for use in structure calculations. Our method exploits the characteristic cross-peak patterns observed for the different amino acid types in 13C-13C correlation and 3D NCACX and NCOCX spectra. An in-depth analysis of the patterns and how they can be used to aid assignment is presented, using spectra of the chicken α-spectrin SH3 domain (62 residues), αB-crystallin (175 residues) and outer membrane protein G (OmpG, 281 residues) as examples. Using this procedure, over 90% of the Cα, Cβ, C' and N resonances in the core domain of αB-crystallin and around 73% in the flanking domains could be assigned (excluding 24 residues at the extreme termini of the protein)

  10. Assigning large proteins in the solid state: a MAS NMR resonance assignment strategy using selectively and extensively {sup 13}C-labelled proteins

    Energy Technology Data Exchange (ETDEWEB)

    Higman, Victoria A. [Leibniz-Institut fuer Molekulare Pharmakologie (Germany); Flinders, Jeremy [Genentech, Inc., Structural Biology Department (United States); Hiller, Matthias; Jehle, Stefan; Markovic, Stefan; Fiedler, Sebastian; Rossum, Barth-Jan van; Oschkinat, Hartmut [Leibniz-Institut fuer Molekulare Pharmakologie (Germany)], E-mail: oschkinat@fmp-berlin.de

    2009-08-15

    In recent years, solid-state magic-angle spinning nuclear magnetic resonance spectroscopy (MAS NMR) has been growing into an important technique to study the structure of membrane proteins, amyloid fibrils and other protein preparations which do not form crystals or are insoluble. Currently, a key bottleneck is the assignment process due to the absence of the resolving power of proton chemical shifts. Particularly for large proteins (approximately >150 residues) it is difficult to obtain a full set of resonance assignments. In order to address this problem, we present an assignment method based upon samples prepared using [1,3-{sup 13}C]- and [2-{sup 13}C]-glycerol as the sole carbon source in the bacterial growth medium (so-called selectively and extensively labelled protein). Such samples give rise to higher quality spectra than uniformly [{sup 13}C]-labelled protein samples, and have previously been used to obtain long-range restraints for use in structure calculations. Our method exploits the characteristic cross-peak patterns observed for the different amino acid types in {sup 13}C-{sup 13}C correlation and 3D NCACX and NCOCX spectra. An in-depth analysis of the patterns and how they can be used to aid assignment is presented, using spectra of the chicken {alpha}-spectrin SH3 domain (62 residues), {alpha}B-crystallin (175 residues) and outer membrane protein G (OmpG, 281 residues) as examples. Using this procedure, over 90% of the C{alpha}, C{beta}, C' and N resonances in the core domain of {alpha}B-crystallin and around 73% in the flanking domains could be assigned (excluding 24 residues at the extreme termini of the protein)

  11. An Active-Learning Assignment Requiring Pharmacy Students to Write Medicinal Chemistry Examination Questions

    OpenAIRE

    Kolluru, Srikanth

    2012-01-01

    Objectives. To implement and assess the effectiveness of an assignment requiring doctor of pharmacy (PharmD) students to write examination questions for the medicinal chemistry sections of a pharmacotherapeutics course.

  12. A Review on Quantitative Approaches for Dock Door Assignment in Cross-Docking

    Directory of Open Access Journals (Sweden)

    Adibah Shuib

    2012-01-01

    Full Text Available Cross docking is a relatively new technique in supply chain operations. It offers limited storage time to maximize the efficiency of goods transshipment. Efficient operation of a cross docking system requires an appropriate coordination of inbound and outbound flows, accurate planning and dynamic scheduling.  The planning strategies at cross docking terminals, which are receiving growing attention today, are the truck-to-door assignment and destination to door assignment problems. This paper provides a comprehensive literature review of quantitative approaches in dock door assignment problems of cross docking planning. The contributions of this paper are to identify the gap of knowledge in operational levels mainly in dock door assignment and to point out the future research direction in cross docking.

  13. Routing and wavelength assignment for transparent optical networks with QoT estimation inaccuracies

    OpenAIRE

    Azodolmolky, Siamak; Pointurier, Yvan; Angelou, Marianna; Solé Pareta, Josep; Tomkos, Ioannis

    2010-01-01

    We show how inaccuracies of Quality of Transmission (QoT) estimations, caused by imperfect models and lack of monitors in transparent optical networks, can be mitigated using a novel routing and wavelength assignment algorithm. Peer Reviewed

  14. Automated solid-state NMR resonance assignment of protein microcrystals and amyloids

    International Nuclear Information System (INIS)

    Solid-state NMR is an emerging structure determination technique for crystalline and non-crystalline protein assemblies, e.g., amyloids. Resonance assignment constitutes the first and often very time-consuming step to a structure. We present ssFLYA, a generally applicable algorithm for automatic assignment of protein solid-state NMR spectra. Application to microcrystals of ubiquitin and the Ure2 prion C-terminal domain, as well as amyloids of HET-s(218–289) and α-synuclein yielded 88–97 % correctness for the backbone and side-chain assignments that are classified as self-consistent by the algorithm, and 77–90 % correctness if also assignments classified as tentative by the algorithm are included

  15. The Research of Traffic Flow Assignment Model based on the Network Calculus of Computer Network

    Directory of Open Access Journals (Sweden)

    Jiayao Liu

    2012-01-01

    Full Text Available The existing dynamic traffic assignment researches mostly based on ideal hypothesis conditions which can analyze the affection of all kinds of traffic parameters on traffic flow and find out characteristics of various types of traffic distribution, but there is rarely have accurate calculation of flow distribution model. The study will first apply the network equilibrium theory into dynamic traffic flow assignment. Using Leaky Bucket Controller and Network Calculus, complicated traffic elements will incorporate into unified mathematical model called T-S Constrained Model, we can deduce flow assignment rate which is in a delay-limited constraints. The simulation results manifest that the model can not only solves congestion, but also reduce average delay of every path, it can extremely improve the traffic capacity of road network. The accurate assignment solutions will have significant impact on traffic engineering implementation.

  16. Neuronal activity in dorsomedial and dorsolateral striatum under the requirement for temporal credit assignment.

    Science.gov (United States)

    Her, Eun Sil; Huh, Namjung; Kim, Jieun; Jung, Min Whan

    2016-01-01

    To investigate neural processes underlying temporal credit assignment in the striatum, we recorded neuronal activity in the dorsomedial and dorsolateral striatum (DMS and DLS, respectively) of rats performing a dynamic foraging task in which a choice has to be remembered until its outcome is revealed for correct credit assignment. Choice signals appeared sequentially, initially in the DMS and then in the DLS, and they were combined with action value and reward signals in the DLS when choice outcome was revealed. Unlike in conventional dynamic foraging tasks, neural signals for chosen value were elevated in neither brain structure. These results suggest that dynamics of striatal neural signals related to evaluating choice outcome might differ drastically depending on the requirement for temporal credit assignment. In a behavioral context requiring temporal credit assignment, the DLS, but not the DMS, might be in charge of updating the value of chosen action by integrating choice, action value, and reward signals together. PMID:27245401

  17. Neural Networks Based Physical Cell Identity Assignment for Self Organized 3GPP Long Term Evolution

    Directory of Open Access Journals (Sweden)

    Muhammad Basit Shahab

    2013-10-01

    Full Text Available This paper proposes neural networks based graph coloring technique to assign Physical Cell Identities throughout the self-organized 3GPP Long Term Evolution Networks. PCIs are allocated such that no two cells in the vicinity of each other or with a common neighbor get the same identity. Efficiency of proposed methodology resides in the fact that minimum number of identities is utilized in the network wise assignment. Simulations are performed on a very large scale network, where initially all the cells are without any PCIs assigned. Results of simulations are demonstrated to analyze the performance of the proposed technique. Discussions about the presence of femto cells and PCI assignment in them are also presented at the end.

  18. A Distributed Routing and Wavelength Assignment Algorithm for Online Muiticast in All-Optical WDM Networks

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Routing and wavelength assignment for online real-time multicast connection setup is a difficulttask due to the dynamic change of availabilities of wavelengths on links and the consideration of wave-length conversion delay in WDM networks. This paper presents a distributed routing and wavelength as-signment scheme for the setup of real-time multicast connections. It integrates routing and wavelength as-signment as a single process, which greatly reduces the connection setup time. The proposed routingmethod is based on the Prim's MST (Minimum Spanning Tree) algorithm and the K-restricted breadth-first search method, which can produce a sub-minimal cost tree under a given delay bound. The wave-length assignment uses the least-conversion and load balancing strategies. Simulation results show that theproposed algorithm is suitable for online multicast connection establishment in WDM networks.

  19. An analysis of project selection and assignment criteria of danish tenders in europe

    DEFF Research Database (Denmark)

    Larsen, Jesper Kranker; Ussing, Lene Faber; Brunø, Thomas Ditlev

    2013-01-01

    Public construction agencies are one of the largest developers within the Danish construction industry, where such agencies own and develop new public construction projects. Most of these projects are put out in European tender. This study analyses the selection and assignment criteria employed by...... process, and 3/ any significant difference between the use of selection and assignment criteria in Danish public construction projects. The study uses a quantitative research approach where 157 Danish public tender cases were selected from the European Tenders Electronic Daily database between the period...... these agencies in different types of public sector projects. Some of the objectives pursued by the study include the determination of 1/ the selection and assignment criteria mostly used in Danish public tenders 2/ how different types of projects use selection and assignment criteria in the bidding...

  20. Efficient eigenvalue assignment by state and output feedback with applications for large space structures

    Science.gov (United States)

    Vannell, Eric C.; Kenny, Sean P.; Maghami, Peiman G.

    1995-01-01

    The erection and deployment of large flexible structures having thousands of degrees of freedom requires controllers based on new techniques of eigenvalue assignment that are computationally stable and more efficient. Scientists at NASA Langley Research Center have developed a novel and efficient algorithm for the eigenvalue assignment of large, time-invariant systems using full-state and output feedback. The objectives of this research were to improve upon the output feedback version of this algorithm, to produce a toolbox of MATLAB functions based on the efficient eigenvalue assignment algorithm, and to experimentally verify the algorithm and software by implementing controllers designed using the MATLAB toolbox on the phase 2 configuration of NASA Langley's controls-structures interaction evolutionary model, a laboratory model used to study space structures. Results from laboratory tests and computer simulations show that effective controllers can be designed using software based on the efficient eigenvalue assignment algorithm.

  1. CASA: An Efficient Automated Assignment of Protein Mainchain NMR Data Using an Ordered Tree Search Algorithm

    International Nuclear Information System (INIS)

    Rapid analysis of protein structure, interaction, and dynamics requires fast and automated assignments of 3D protein backbone triple-resonance NMR spectra. We introduce a new depth-first ordered tree search method of automated assignment, CASA, which uses hand-edited peak-pick lists of a flexible number of triple resonance experiments. The computer program was tested on 13 artificially simulated peak lists for proteins up to 723 residues, as well as on the experimental data for four proteins. Under reasonable tolerances, it generated assignments that correspond to the ones reported in the literature within a few minutes of CPU time. The program was also tested on the proteins analyzed by other methods, with both simulated and experimental peaklists, and it could generate good assignments in all relevant cases. The robustness was further tested under various situations

  2. Value assignment of nutrient concentrations in standard reference material 2384 baking chocolate.

    Science.gov (United States)

    Sharpless, Katherine E; Brown Thomas, Jeanice; Nelson, Bryant C; Phinney, Curtis S; Sieber, John R; Wood, Laura J; Yen, James H; Howell, Daniel W

    2002-11-20

    Standard Reference Material (SRM) Baking Chocolate was recently issued, and the process used for value assignment of nutrient concentrations is reported herein. SRM 2384 is intended for use as a primary control material for assigning values to in-house control materials and for validation of analytical methods for the measurement of fatty acids, proximates, vitamins, and elements in chocolate and similar high-fat matrices. The Certificate of Analysis for SRM 2384 provides assigned values for concentrations of fatty acids, proximates, vitamins, elements, and total dietary fiber, for which product labeling is required by the Nutrition Labeling and Education Act of 1990, as well as for catechins, caffeine, theobromine, and theophylline. These assigned values were based on measurements by NIST and/or collaborating laboratories. PMID:12428961

  3. Resources for preparing independent government estimates for remedial contracting work assignments. Directive

    International Nuclear Information System (INIS)

    The memorandum provides information regarding the availability of tools, data bases, and assistance for developing independent government estimates of the cost of work to be performed by contractors for remedial work assignments

  4. Automated solid-state NMR resonance assignment of protein microcrystals and amyloids

    Energy Technology Data Exchange (ETDEWEB)

    Schmidt, Elena [Goethe University Frankfurt am Main, Center for Biomolecular Magnetic Resonance, Institute of Biophysical Chemistry (Germany); Gath, Julia [ETH Zurich, Physical Chemistry (Switzerland); Habenstein, Birgit [UMR 5086 CNRS/Universite de Lyon 1, Institut de Biologie et Chimie des Proteines (France); Ravotti, Francesco; Szekely, Kathrin; Huber, Matthias [ETH Zurich, Physical Chemistry (Switzerland); Buchner, Lena [Goethe University Frankfurt am Main, Center for Biomolecular Magnetic Resonance, Institute of Biophysical Chemistry (Germany); Boeckmann, Anja, E-mail: a.bockmann@ibcp.fr [UMR 5086 CNRS/Universite de Lyon 1, Institut de Biologie et Chimie des Proteines (France); Meier, Beat H., E-mail: beme@ethz.ch [ETH Zurich, Physical Chemistry (Switzerland); Guentert, Peter, E-mail: guentert@em.uni-frankfurt.de [Goethe University Frankfurt am Main, Center for Biomolecular Magnetic Resonance, Institute of Biophysical Chemistry (Germany)

    2013-07-15

    Solid-state NMR is an emerging structure determination technique for crystalline and non-crystalline protein assemblies, e.g., amyloids. Resonance assignment constitutes the first and often very time-consuming step to a structure. We present ssFLYA, a generally applicable algorithm for automatic assignment of protein solid-state NMR spectra. Application to microcrystals of ubiquitin and the Ure2 prion C-terminal domain, as well as amyloids of HET-s(218-289) and {alpha}-synuclein yielded 88-97 % correctness for the backbone and side-chain assignments that are classified as self-consistent by the algorithm, and 77-90 % correctness if also assignments classified as tentative by the algorithm are included.

  5. Ex-vivo HRMAS of adult brain tumours: metabolite quantification and assignment of tumour biomarkers.

    NARCIS (Netherlands)

    Wright, A.J.; Fellows, G.A.; Griffiths, J.R.; Wilson, M.; Bell, B.A.; Howe, F.A.

    2010-01-01

    BACKGROUND: High-resolution magic angle spinning (HRMAS) NMR spectroscopy allows detailed metabolic analysis of whole biopsy samples for investigating tumour biology and tumour classification. Accurate biochemical assignment of small molecule metabolites that are "NMR visible" will improve our inter

  6. Modeling multiple visual words assignment for bag-of-features based medical image retrieval

    KAUST Repository

    Wang, Jingyan

    2012-01-01

    In this paper, we investigate the bag-of-features based medical image retrieval methods, which represent an image as a collection of local features, such as image patch and key points with SIFT descriptor. To improve the bag-of-features method, we first model the assignment of local descriptor as contribution functions, and then propose a new multiple assignment strategy. By assuming the local feature can be reconstructed by its neighboring visual words in vocabulary, we solve the reconstruction weights as a QP problem and then use the solved weights as contribution functions, which results in a new assignment method called the QP assignment. We carry our experiments on ImageCLEFmed datasets. Experiments\\' results show that our proposed method exceeds the performances of traditional solutions and works well for the bag-of-features based medical image retrieval tasks.

  7. Disorders of Sex Development: Management of Gender Assignment in a Preterm Infant with Intrauterine Growth Restriction

    OpenAIRE

    Mastrandrea, Lucy D.; Albini, Christine H.; Wynn, Ralph J.; Greenfield, Saul P.; Robinson, Luther K.; Tom Mazur

    2012-01-01

    We describe how a gender specialist team managed the case of a disorder of sex development in a preterm infant where definitive diagnosis and gender assignment were delayed due to complications of prematurity, anemia, and severe intrauterine growth restriction.

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

    Science.gov (United States)

    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.

  9. PhosphoScore: An Open-Source Phosphorylation Site Assignment Tool for MSn Data

    OpenAIRE

    Ruttenberg, Brian E.; Pisitkun, Trairak; Knepper, Mark A.; Jason D. Hoffert

    2008-01-01

    Correct phosphorylation site assignment is a critical aspect of phosphoproteomic analysis. Large-scale phosphopeptide data sets that are generated through liquid chromatography-coupled tandem mass spectrometry (LC-MS/MS) analysis often contain hundreds or thousands of phosphorylation sites that require validation. To this end, we have created PhosphoScore, an open-source assignment program that is compatible with phosphopeptide data from multiple MS levels (MSn). The algorithm takes into acco...

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

    Science.gov (United States)

    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.

  11. The Impact of Teacher-Student Gender Matches: Random Assignment Evidence from South Korea

    OpenAIRE

    Jaegeum Lim; Jonathan Meer

    2015-01-01

    Gender disparities in academic performance may be driven in part by the interaction of teacher and student gender, but systematic sorting of students into classrooms makes it difficult to identify causal effects. We use the random assignment of students to Korean middle school classrooms and show that the female students perform substantially better on standardized tests when assigned to female teachers; there is little effect on male students.

  12. Comparison of Participatively-set and Assigned Goals in the Reduction of Alcohol Use

    OpenAIRE

    Lozano, Brian Edward

    2008-01-01

    The effects of setting goals on goal commitment and goal achievement in the context of an alcohol use intervention were examined using an experimental design in which participants were randomly assigned to participatively-set goals, assigned goals, and no goal conditions. The current study provides information regarding the links between degree of participation in goal setting, goal commitment, self-efficacy for oneâ s goal, subsequent alcohol use, and goal achievement. It was hypothesized t...

  13. Amino acid selective unlabeling for sequence specific resonance assignments in proteins

    Energy Technology Data Exchange (ETDEWEB)

    Krishnarjuna, B.; Jaipuria, Garima; Thakur, Anushikha [Indian Institute of Science, NMR Research Centre (India); D' Silva, Patrick, E-mail: patrick@biochem.iisc.ernet.in [Indian Institute of Science, Department of Biochemistry (India); Atreya, Hanudatta S., E-mail: hsatreya@sif.iisc.ernet.in [Indian Institute of Science, NMR Research Centre (India)

    2011-01-15

    Sequence specific resonance assignment constitutes an important step towards high-resolution structure determination of proteins by NMR and is aided by selective identification and assignment of amino acid types. The traditional approach to selective labeling yields only the chemical shifts of the particular amino acid being selected and does not help in establishing a link between adjacent residues along the polypeptide chain, which is important for sequential assignments. An alternative approach is the method of amino acid selective 'unlabeling' or reverse labeling, which involves selective unlabeling of specific amino acid types against a uniformly {sup 13}C/{sup 15}N labeled background. Based on this method, we present a novel approach for sequential assignments in proteins. The method involves a new NMR experiment named, {l_brace}{sup 12}CO{sub i}-{sup 15}N{sub i+1}{r_brace}-filtered HSQC, which aids in linking the {sup 1}H{sup N}/{sup 15}N resonances of the selectively unlabeled residue, i, and its C-terminal neighbor, i + 1, in HN-detected double and triple resonance spectra. This leads to the assignment of a tri-peptide segment from the knowledge of the amino acid types of residues: i - 1, i and i + 1, thereby speeding up the sequential assignment process. The method has the advantage of being relatively inexpensive, applicable to {sup 2}H labeled protein and can be coupled with cell-free synthesis and/or automated assignment approaches. A detailed survey involving unlabeling of different amino acid types individually or in pairs reveals that the proposed approach is also robust to misincorporation of {sup 14}N at undesired sites. Taken together, this study represents the first application of selective unlabeling for sequence specific resonance assignments and opens up new avenues to using this methodology in protein structural studies.

  14. Optimization and visualization of the edge weights in optimal assignment methods for virtual screening

    Science.gov (United States)

    2013-01-01

    Background Ligand‐based virtual screening plays a fundamental part in the early drug discovery stage. In a virtual screening, a chemical library is searched for molecules with similar properties to a query molecule by means of a similarity function. The optimal assignment of chemical graphs has proven to be a valuable similarity function for many cheminformatic tasks, such as virtual screening. The optimal assignment assumes all atoms of a query molecule to be equally important, which is not realistic depending on the binding mode of a ligand. The importance of a query molecule’s atoms can be integrated in the optimal assignment by weighting the assignment edges. We optimized the edge weights with respect to the virtual screening performance by means of evolutionary algorithms. Furthermore, we propose a visualization approach for the interpretation of the edge weights. Results We evaluated two different evolutionary algorithms, differential evolution and particle swarm optimization, for their suitability for optimizing the assignment edge weights. The results showed that both optimization methods are suited to optimize the edge weights. Furthermore, we compared our approach to the optimal assignment with equal edge weights and two literature similarity functions on a subset of the Directory of Useful Decoys using sophisticated virtual screening performance metrics. Our approach achieved a considerably better overall and early enrichment performance. The visualization of the edge weights enables the identification of substructures that are important for a good retrieval of ligands and for the binding to the protein target. Conclusions The optimization of the edge weights in optimal assignment methods is a valuable approach for ligand‐based virtual screening experiments. The approach can be applied to any similarity function that employs the optimal assignment method, which includes a variety of similarity measures that have proven to be valuable in various

  15. A Note on Mathematical Modelling of Practical Multicampaign Assignment and Its Computational Complexity

    OpenAIRE

    Kim, Yong-Hyuk; Yoon, Yourim

    2009-01-01

    Within personalized marketing, a recommendation issue known as multicampaign assignment is to overcome a critical problem, known as the multiple recommendation problem which occurs when running several personalized campaigns simultaneously. This paper mainly deals with the hardness of multicampaign assignment, which is treated as a very challenging problem in marketing. The objective in this problem is to find a customer-campaign matrix which maximizes the effectiveness of multiple campaigns ...

  16. Lifestyle changes of Japanese people on overseas assignment in Michigan, USA

    OpenAIRE

    Kitamura Kazuya; Fetters Michael D; Sano Kiyoshi; Sato Juichi; Ban Nobutaro

    2009-01-01

    Abstract Background Temporary work assignments in the United States (US) are widely considered to have negative health outcomes on Asians mostly due to adverse changes in diet and exercise, though there is little research on this phenomenon. This study investigated the impact of lifestyle changes on the biological and psychological health and health behaviours of Japanese people on temporary assignments in the US. Methods In this cross sectional survey, we distributed a 38 item self-administe...

  17. An improved lower bound for the asymmetric traveling salesman problem based on the assignment problem

    OpenAIRE

    Ramires, Ana; Soares, João

    2005-01-01

    In this article we decribe how to compute a lower bound for the asymmetric traveling salesman problem that dominates the bound that comes from the assignment relaxation, through the solving of a sequence of assignment problems. The algorithm that we propose is a first-order method based on the exponential penalty function. Directions of movement are derived from a disjunctive relaxation that we proposed as being one of two possible classes, one based on cycles, the other based on cliques.

  18. Developing a model for assigning senior officers in the Brazilian Air Force

    OpenAIRE

    Gentil Toneli, Arthur A.

    2015-01-01

    Approved for public release; distribution is unlimited The Brazilian Air Force faces a huge challenge in the assignment process. While aviators outnumber any other community, there are few jobs related to aviation available for senior officers. As a consequence, when junior aviators who invested their time improving their skills in air operations are promoted to senior ranks, they must be assigned to managerial positions in areas they don’t master. The problem becomes worse in the absence ...

  19. Linking activity-based travel demand models and traffic assignment: A Flemish case study

    OpenAIRE

    Ramaekers, Katrien; Kochan, Bruno; BELLEMANS, Tom; JANSSENS, Davy; Wets, Geert

    2008-01-01

    A custom agent-based simulation framework is developed that combines the fields of traffic demand modeling and traffic assignment, applied to the region of Flanders (Belgium). The framework uses an activity-based approach to model traffic demand and an assignment module that is linked to the traffic demand module. Activity data for the framework is provided by a large scale survey, conducted on 2500 households in the study area. The agent-based simulation model consists of over six million ag...

  20. Writing Assignments with a Metacognitive Component Enhance Learning in a Large Introductory Biology Course

    OpenAIRE

    Mynlieff, Michelle; Manogaran, Anita L.; St. Maurice, Martin; Eddinger, Thomas J.

    2014-01-01

    Writing assignments, including note taking and written recall, should enhance retention of knowledge, whereas analytical writing tasks with metacognitive aspects should enhance higher-order thinking. In this study, we assessed how certain writing-intensive “interventions,” such as written exam corrections and peer-reviewed writing assignments using Calibrated Peer Review and including a metacognitive component, improve student learning. We designed and tested the possible benefits of these ap...

  1. SCRAM: A Sharing Considered Route Assignment Mechanism for Fair Taxi Route Recommendations

    OpenAIRE

    Qian, Shiyou; Cao, Jian; Le Mouël, Frédéric; Sahel, Issam; Li, Minglu

    2015-01-01

    Recommending routes for a group of competing taxi drivers is almost untouched in most route recommender systems. For this kind of problem, recommendation fairness and driving efficiency are two fundamental aspects. In the paper, we propose SCRAM, a sharing considered route assignment mechanism for fair taxi route recommendations. SCRAM aims to provide recommendation fairness for a group of competing taxi drivers, without sacrificing driving efficiency. By designing a concise route assignment ...

  2. A Review on Quantitative Approaches for Dock Door Assignment in Cross-Docking

    OpenAIRE

    Adibah Shuib; Wan Nor Ashikin Wan Ahmad Fatthi

    2012-01-01

    Cross docking is a relatively new technique in supply chain operations. It offers limited storage time to maximize the efficiency of goods transshipment. Efficient operation of a cross docking system requires an appropriate coordination of inbound and outbound flows, accurate planning and dynamic scheduling.  The planning strategies at cross docking terminals, which are receiving growing attention today, are the truck-to-door assignment and destination to door assignment problems. This paper ...

  3. AntiPlag: Plagiarism Detection on Electronic Submissions of Text Based Assignments

    OpenAIRE

    Jiffriya, M. A. C.; Jahan, M. A. C. Akmal; Ragel, R. G.; Deegalla, S.

    2014-01-01

    Plagiarism is one of the growing issues in academia and is always a concern in Universities and other academic institutions. The situation is becoming even worse with the availability of ample resources on the web. This paper focuses on creating an effective and fast tool for plagiarism detection for text based electronic assignments. Our plagiarism detection tool named AntiPlag is developed using the tri-gram sequence matching technique. Three sets of text based assignments were tested by An...

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

    Science.gov (United States)

    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.

  5. A prototype expert system which assigns aviation maintenance personnel to squadron billets

    OpenAIRE

    Alston, Thomas Porter

    1987-01-01

    The technical feasibility of developing an expert system to support the assignment of squadron maintenance personnel to authorized billets is examined by building a prototype system. The rules used by an assistant maintenance officer to assign personnel are analyzed, and a database derived from the OPNAV 1000/2 and EDVR is designed. The prototype is developed for a micro-computer system using an expert system shell, Insight 2+, and is fully integrated with dBase III files

  6. Development of reference assignment in children: a direct comparison to the performance of cognitive shift

    OpenAIRE

    Murakami, Taro; Hashiya, Kazuhide

    2014-01-01

    The referent of a deictic embedded in a particular utterance or sentence is often ambiguous. Reference assignment is a pragmatic process that enables the disambiguation of such a referent. Previous studies have demonstrated that receivers use social-pragmatic information during referent assignment; however, it is still unclear which aspects of cognitive development affect the development of referential processing in children. The present study directly assessed the relationship between perfor...

  7. Bag-of-features based medical image retrieval via multiple assignment and visual words weighting

    KAUST Repository

    Wang, Jingyan

    2011-11-01

    Bag-of-features based approaches have become prominent for image retrieval and image classification tasks in the past decade. Such methods represent an image as a collection of local features, such as image patches and key points with scale invariant feature transform (SIFT) descriptors. To improve the bag-of-features methods, we first model the assignments of local descriptors as contribution functions, and then propose a novel multiple assignment strategy. Assuming the local features can be reconstructed by their neighboring visual words in a vocabulary, reconstruction weights can be solved by quadratic programming. The weights are then used to build contribution functions, resulting in a novel assignment method, called quadratic programming (QP) assignment. We further propose a novel visual word weighting method. The discriminative power of each visual word is analyzed by the sub-similarity function in the bin that corresponds to the visual word. Each sub-similarity function is then treated as a weak classifier. A strong classifier is learned by boosting methods that combine those weak classifiers. The weighting factors of the visual words are learned accordingly. We evaluate the proposed methods on medical image retrieval tasks. The methods are tested on three well-known data sets, i.e., the ImageCLEFmed data set, the 304 CT Set, and the basal-cell carcinoma image set. Experimental results demonstrate that the proposed QP assignment outperforms the traditional nearest neighbor assignment, the multiple assignment, and the soft assignment, whereas the proposed boosting based weighting strategy outperforms the state-of-the-art weighting methods, such as the term frequency weights and the term frequency-inverse document frequency weights. © 2011 IEEE.

  8. Vicious viruses and vigilant vaccines: effects of linguistic agency assignment in health policy advocacy.

    Science.gov (United States)

    Bell, Robert A; McGlone, Matthew S; Dragojevic, Marko

    2014-01-01

    Studying the effect of a fictitious policy editorial advocating mandatory vaccination of youth against human papillomavirus (HPV), the authors hypothesized that linguistic assignment of agency to HPV (e.g., "HPV preys on millions of people") would increase perceptions of its severity, relative to a comparable message that assigned agency to humans (e.g., "Millions of people contract HPV"). In addition, the authors predicted that HPV vaccines would be perceived as more effective when agency was assigned to vaccination (e.g., "Vaccination guards people") rather than to humans (e.g., "People guard themselves through vaccination"). University students (N = 361) were randomly assigned to read one of four versions of the editorial defined by a 2 ×2 (Threat Agency × Immunization Agency) factorial design and thereafter completed a questionnaire. When agency was assigned to the virus or the vaccine, HPV was perceived as a more severe threat, vaccination was perceived as more effective, and people were more in favor of mandatory HPV vaccination. The authors concluded that linguistic agency assignment bestows potency to the agent, thereby making threats more alarming and medical interventions seem more effective. PMID:24354913

  9. Targeting Type 2: Linguistic Agency Assignment in Diabetes Prevention Policy Messaging.

    Science.gov (United States)

    Glowacki, Elizabeth M; McGlone, Matthew S; Bell, Robert A

    2016-01-01

    We explored the effects of linguistic agency assignment on the persuasive impact of a fictitious medical journal editorial about Type 2 diabetes. Participants (N = 422) read 1 of 4 versions of an editorial that differed in the language used to describe the health threat posed by the disease (threat agency) and to outline a program for preventing it (prevention agency). Threat agency was assigned either to the disease (e.g., diabetes puts individuals' lives at risk) or to humans (e.g., individuals who acquire diabetes put their lives at risk). Prevention agency was assigned either to the recommended prevention behaviors (e.g., a healthy diet and regular exercise protect children from Type 2) or to humans (e.g., children who eat a healthy diet and exercise regularly protect themselves from Type 2). Respondents' perceptions of disease severity were higher when threat agency was assigned to diabetes rather than humans. However, attitudes toward the proposed prevention program were higher when prevention agency was assigned to humans rather than to the recommended behaviors. The latter finding contrasts with agency effects observed in previous research on a viral threat, suggesting that the optimal pattern of agency assignment in prevention messaging may be different for acute and chronic lifestyle diseases. PMID:26959860

  10. A code reviewer assignment model incorporating the competence differences and participant preferences

    Directory of Open Access Journals (Sweden)

    Wang Yanqing

    2016-03-01

    Full Text Available A good assignment of code reviewers can effectively utilize the intellectual resources, assure code quality and improve programmers’ skills in software development. However, little research on reviewer assignment of code review has been found. In this study, a code reviewer assignment model is created based on participants’ preference to reviewing assignment. With a constraint of the smallest size of a review group, the model is optimized to maximize review outcomes and avoid the negative impact of “mutual admiration society”. This study shows that the reviewer assignment strategies incorporating either the reviewers’ preferences or the authors’ preferences get much improvement than a random assignment. The strategy incorporating authors’ preference makes higher improvement than that incorporating reviewers’ preference. However, when the reviewers’ and authors’ preference matrixes are merged, the improvement becomes moderate. The study indicates that the majority of the participants have a strong wish to work with reviewers and authors having highest competence. If we want to satisfy the preference of both reviewers and authors at the same time, the overall improvement of learning outcomes may be not the best.

  11. Stereospecific assignments of glycine in proteins by stereospecific deuteration and {sup 15}N labeling

    Energy Technology Data Exchange (ETDEWEB)

    Hansen, A.P.; Curley, R.W. Jr.; Panigot, M.J.; Fesik, S.W. [Ohio State Univ., Columbus, OH (United States)

    1994-12-01

    Stereospecific assignments are important for accurately determining the three-dimensional structures of proteins through the use of multidimensional NMR techniques. It is especially important to stereospecifically assign the glycine {alpha}-protons in proteins because of the potential for different backbone conformations of this residue. These stereospecific assignments are critical for interpreting the {sup 3}J{sub NH,{alpha}H} coupling constants and NOEs involving the glycine {alpha}-protons that determine the conformation of this part of the protein. However, it is often difficult to unambiguously obtain the stereospecific assignments for glycine residues by using only NOE data. In this poster, we present a method for unambiguous, stereospecific assignment of the {alpha}-protons of glycine residues. This method involves synthesis of stereo-specifically deuterated and {sup 15}N-labeled Gly using a slightly modified procedure originally described by Woodard and coworkers for the stereoselective deuteration of glycine. The stereospecifically deuterated and {sup 15}N-labeled Gy has been incorporated into recombinant proteins expressed in both bacterial systems (FKBP) and mammalian cells (u-PA). Two- and three-dimensional isotope-filtered and isotope-edited NMR experiments were used to obtain the stereospecific assignments of the glycine {alpha}-protons for these proteins.

  12. Equilibrium model and algorithm of urban transit assignment based on augmented network

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The passenger flow assignment problem for the urban transit network is relatively complicated due to the complexity of the network structure and many factors influencing the passengers’ route and line choices. In the past three decades, many models have been proposed to solve the passenger flow assignment problem. However, the common-line problem remains challenging in transit flow assignment. In this paper, the characteristics of the urban transit network is analysed and a new technique of augmented network is proposed to represent the urban transit system. The purpose is to eliminate the complex common-line problem when modeling transit passenger flow assignment. Through this augmentation technique, the urban transit system can be represented by an augmented network-it then behaves like a simple network and can be used as a generalized network for traffic assignment or network analysis. This paper presents a user equilibrium model for the urban transit assignment problem based on such a technique. A numerical example is also provided to illustrate the approach.

  13. The adaptive approach for storage assignment by mining data of warehouse management system for distribution centres

    Science.gov (United States)

    Ming-Huang Chiang, David; Lin, Chia-Ping; Chen, Mu-Chen

    2011-05-01

    Among distribution centre operations, order picking has been reported to be the most labour-intensive activity. Sophisticated storage assignment policies adopted to reduce the travel distance of order picking have been explored in the literature. Unfortunately, previous research has been devoted to locating entire products from scratch. Instead, this study intends to propose an adaptive approach, a Data Mining-based Storage Assignment approach (DMSA), to find the optimal storage assignment for newly delivered products that need to be put away when there is vacant shelf space in a distribution centre. In the DMSA, a new association index (AIX) is developed to evaluate the fitness between the put away products and the unassigned storage locations by applying association rule mining. With AIX, the storage location assignment problem (SLAP) can be formulated and solved as a binary integer programming. To evaluate the performance of DMSA, a real-world order database of a distribution centre is obtained and used to compare the results from DMSA with a random assignment approach. It turns out that DMSA outperforms random assignment as the number of put away products and the proportion of put away products with high turnover rates increase.

  14. An analysis of project selection and assignment criteria of Danish tenders in Europe

    Directory of Open Access Journals (Sweden)

    Jasper Kranker Larsen

    2013-12-01

    Full Text Available Public construction agencies are one of the largest developers within the Danish construction industry, where such agencies own and develop new public construction projects. Most of these projects are put out in European tender. This study analyses the selection and assignment criteria employed by these agencies in different types of public sector projects. Some of the objectives pursued by the study include the determination of 1/ the selection and assignment criteria mostly used in Danish public tenders 2/ how different types of projects use selection and assignment criteria in the bidding process, and 3/ any significant difference between the use of selection and assignment criteria in Danish public construction projects. The study uses a quantitative research approach where 157 Danish public tender cases were selected from the European Tenders Electronic Daily database between the period: January 2010 to March 2013. Fisher's Exact Test was conducted to determine if there was any significant use of some selection and assignment criteria. The findings of the study showed that invited tenders with pre-qualification and lowest price in 69.8% of the tenders are the most used selection and assignment criteria, with little regard to project type.

  15. AN EVOLUTIONARY ALGORITHM FOR CHANNEL ASSIGNMENT PROBLEM IN WIRELESS MOBILE NETWORKS

    Directory of Open Access Journals (Sweden)

    Yee Shin Chia

    2012-12-01

    Full Text Available The channel assignment problem in wireless mobile network is the assignment of appropriate frequency spectrum to incoming calls while maintaining a satisfactory level of electromagnetic compatibility (EMC constraints. An effective channel assignment strategy is important due to the limited capacity of frequency spectrum in wireless mobile network. Most of the existing channel assignment strategies are based on deterministic methods. In this paper, an adaptive genetic algorithm (GA based channel assignment strategy is introduced for resource management and to reduce the effect of EMC interferences. The most significant advantage of the proposed optimization method is its capability to handle both the reassignment of channels for existing calls as well as the allocation of channel to a new incoming call in an adaptive process to maximize the utility of the limited resources. It is capable to adapt the population size to the number of eligible channels for a particular cell upon new call arrivals to achieve reasonable convergence speed. The MATLAB simulation on a 49-cells network model for both uniform and nonuniform call traffic distributions showed that the proposed channel optimization method can always achieve a lower average new incoming call blocking probability compared to the deterministic based channel assignment strategy.

  16. Automation of block assignment planning using a diagram-based scenario modeling method

    Directory of Open Access Journals (Sweden)

    Hwang In Hyuck

    2014-03-01

    Full Text Available Most shipbuilding scheduling research so far has focused on the load level on the dock plan. This is be¬cause the dock is the least extendable resource in shipyards, and its overloading is difficult to resolve. However, once dock scheduling is completed, making a plan that makes the best use of the rest of the resources in the shipyard to minimize any additional cost is also important. Block assignment planning is one of the midterm planning tasks; it assigns a block to the facility (factory/shop or surface plate that will actually manufacture the block according to the block characteristics and current situation of the facility. It is one of the most heavily loaded midterm planning tasks and is carried out manu¬ally by experienced workers. In this study, a method of representing the block assignment rules using a diagram was su¬ggested through analysis of the existing manual process. A block allocation program was developed which automated the block assignment process according to the rules represented by the diagram. The planning scenario was validated through a case study that compared the manual assignment and two automated block assignment results.

  17. Assessment of Random Assignment in Training and Test Sets using Generalized Cluster Analysis Technique

    Directory of Open Access Journals (Sweden)

    Sorana D. BOLBOACĂ

    2011-06-01

    Full Text Available Aim: The properness of random assignment of compounds in training and validation sets was assessed using the generalized cluster technique. Material and Method: A quantitative Structure-Activity Relationship model using Molecular Descriptors Family on Vertices was evaluated in terms of assignment of carboquinone derivatives in training and test sets during the leave-many-out analysis. Assignment of compounds was investigated using five variables: observed anticancer activity and four structure descriptors. Generalized cluster analysis with K-means algorithm was applied in order to investigate if the assignment of compounds was or not proper. The Euclidian distance and maximization of the initial distance using a cross-validation with a v-fold of 10 was applied. Results: All five variables included in analysis proved to have statistically significant contribution in identification of clusters. Three clusters were identified, each of them containing both carboquinone derivatives belonging to training as well as to test sets. The observed activity of carboquinone derivatives proved to be normal distributed on every. The presence of training and test sets in all clusters identified using generalized cluster analysis with K-means algorithm and the distribution of observed activity within clusters sustain a proper assignment of compounds in training and test set. Conclusion: Generalized cluster analysis using the K-means algorithm proved to be a valid method in assessment of random assignment of carboquinone derivatives in training and test sets.

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

    Science.gov (United States)

    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.

  19. 78 FR 70047 - Request for the Technical Review of 25 Draft Skin Notation Assignments and Skin Notation Profiles

    Science.gov (United States)

    2013-11-22

    ... Skin Notation Assignments and Skin Notation Profiles AGENCY: National Institute for Occupational Safety... Human Services (HHS). ACTION: Request for comments. SUMMARY: The National Institute for Occupational..., such as airway hyper reactivity (asthma). Candidate chemicals may be assigned more than one...

  20. Pediatric Online Evidence-Based Medicine Assignment Is a Novel Effective Enjoyable Undergraduate Medical Teaching Tool

    Science.gov (United States)

    Kotb, Magd A.; Elmahdy, Hesham Nabeh; Khalifa, Nour El Deen Mahmoud; El-Deen, Mohamed Hamed Nasr; Lotfi, Mohamed Amr N.

    2015-01-01

    Abstract Evidence-based medicine (EBM) is delivered through a didactic, blended learning, and mixed models. Students are supposed to construct an answerable question in PICO (patient, intervention, comparison, and outcome) framework, acquire evidence through search of literature, appraise evidence, apply it to the clinical case scenario, and assess the evidence in relation to clinical context. Yet these teaching models have limitations especially those related to group work, for example, handling uncooperative students, students who fail to contribute, students who domineer, students who have personal conflict, their impact upon progress of their groups, and inconsistent individual acquisition of required skills. At Pediatrics Department, Faculty of Medicine, Cairo University, we designed a novel undergraduate pediatric EBM assignment online system to overcome shortcomings of previous didactic method and aimed to assess its effectiveness by prospective follow-up during academic years 2012 to 2013 and 2013 to 2014. The novel web-based online interactive system was tailored to provide sequential single and group assignments for each student. Single assignment addressed a specific case scenario question, while group assignment was teamwork that addressed different questions of same case scenario. Assignment comprised scholar content and skills. We objectively analyzed students’ performance by criterion-based assessment and subjectively by anonymous student questionnaire. A total of 2879 were enrolled in 5th year Pediatrics Course consecutively, of them 2779 (96.5%) logged in and 2554 (88.7%) submitted their work. They were randomly assigned to 292 groups. A total of 2277 (89.15%) achieved ≥80% of total mark (4/5), of them 717 (28.1%) achieved a full mark. A total of 2178 (85.27%) and 2359 (92.36%) made evidence-based conclusions and recommendations in single and group assignment, respectively (P < 0.001). A total of 1102 (43.1%) answered student questionnaire

  1. Models and Heuristics for the Tactical Berth Allocation Problem with Quay-Crane Assignment and Transshipment Quadratic Costs

    OpenAIRE

    Giallombardo, Giovanni; Moccia, Luigi; Salani, Matteo; Vacca, Ilaria

    2009-01-01

    In this work, we focus on the integration of two problems arising in the management of transshipment container terminals: the problem of assigning and scheduling incoming ships to berthing positions (berth allocation problem), and the problem of assigning quay cranes to incoming ships (quay crane assignment problem). In particular, motivated by the practice in the negotiation process between the terminal management and the shipping liner, the model is based on the concept of quay-crane assign...

  2. Complete (1)H, (15)N and (13)C assignment of trappin-2 and (1)H assignment of its two domains, elafin and cementoin.

    Science.gov (United States)

    Loth, Karine; Alami, Soha Abou Ibrahim; Habès, Chahrazed; Garrido, Solène; Aucagne, Vincent; Delmas, Agnès F; Moreau, Thierry; Zani, Marie-Louise; Landon, Céline

    2016-04-01

    Trappin-2 is a serine protease inhibitor with a very narrow inhibitory spectrum and has significant anti-microbial activities. It is a 10 kDa cationic protein composed of two distinct domains. The N-terminal domain (38 residues) named cementoin is known to be intrinsically disordered when it is not linked to the elafin. The C-terminal domain (57 residues), corresponding to elafin, is a cysteine-rich domain stabilized by four disulfide bridges and is characterized by a flat core and a flexible N-terminal part. To our knowledge, there is no structural data available on trappin-2. We report here the complete (1)H, (15)N and (13)C resonance assignment of the recombinant trappin-2 and the (1)H assignments of cementoin and elafin, under the same experimental conditions. This is the first step towards the 3D structure determination of the trappin-2. PMID:26878852

  3. Towards More Precise Design Guidance: Specifying and Testing the Functions of Assigned Student Roles in Online Discussions

    Science.gov (United States)

    Wise, Alyssa Friend; Saghafian, Marzieh; Padmanabhan, Poornima

    2012-01-01

    While assigning student roles is a popular technique in online discussions, roles and the responsibilities allocated to them have not been consistently assigned. This makes it difficult to compare implementations and generate principled guidance for role design. This study critically examined frequently assigned student roles and identified a set…

  4. 29 CFR 785.37 - Home to work on special one-day assignment in another city.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 3 2010-07-01 2010-07-01 false Home to work on special one-day assignment in another city... WORKED Application of Principles Traveltime § 785.37 Home to work on special one-day assignment in... given a special 1-day work assignment in another city. For example, an employee who works in...

  5. Likelihood of being seen within emergency departments’ assigned urgency times for poisoned and injured individuals

    Directory of Open Access Journals (Sweden)

    Rachel L. Rosenthal

    2014-10-01

    Full Text Available The objective of the present study is to determine the likelihood of injured or poisoned patients in special populations, such as those patients that are elderly and self-injurious, being seen within an emergency department’s triage nurse assigned urgency. Data from the National Hospital Ambulatory Medical Care Survey (2007 was utilized in this study. Multi-level models and multivariate linear regression models were used; patient age, sex, reported pain levels, wait time, and injury type were examined as potential predictors of being seen within assigned urgency. From a random sample across all US Emergency Departments, 5616 patients nested in 312 hospital emergency departments were included into the study. Typically, approximately 1 in 5 emergency department patients were not seen within their triage nurse assigned urgencies. The typical patient in the average hospital had an 81% likelihood of being seen within their assigned urgency. P atients who were oldest [odds ratio (OR=0.0990] and had self-inflicted injuries (vs assault OR=1.246 and OR=1.596 had the least likelihood to be seen within their assigned urgencies. As actual wait-time increased for patients, they were less likely to be seen within their assigned urgencies. The most powerful predictors of the study’s outcome were injury type and age, indicating that patients from special populations such as the elderly or those with injuries resulting from deliberate self-harm are less likely to be actually priority patients independent of triage nurse assigned urgencies.

  6. Assigned Seating

    Science.gov (United States)

    Reist, Kay

    2005-01-01

    This article describes one classroom's experience implementing a art lesson aimed to reinforce the notion of "nonrepresentational." The lesson applied the elements of nonrepresentational art, as well as balance, unity, and line while inspiring surprise and curiosity in students who commented on their designs once they had completed the exercise…

  7. An Adaptive Strategy for an Optimized Collision-Free Slot Assignment in Multichannel Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    Pascale Minet

    2013-07-01

    Full Text Available Convergecast is the transmission paradigm used by data gathering applications in wireless sensor networks (WSNs. For efficiency reasons, a collision-free slotted medium access is typically used: time slots are assigned to non-conflicting transmitters. Furthermore, in any slot, only the transmitters and the corresponding receivers are awake, the other nodes sleeping in order to save energy. Since a multichannel network increases the throughput available to the application and reduces interference, multichannel slot assignment is an emerging research domain in WSNs. First, we focus on a multichannel time slot assignment that minimizes the data gathering delays. We compute the optimal time needed for a raw data convergecast in various multichannel topologies. Then, we focus on how to adapt such an assignment to dynamic demands of transmissions (e.g., alarms, temporary additional application needs and retransmissions. We formalize the problem using linear programming, and we propose an incremental technique that operates on an optimized primary schedule to provide bonus slots to meet new transmission needs. We propose AMSA, an Adaptive Multichannel Slot Assignment algorithm, which takes advantage of bandwidth spatial reuse, and we evaluate its performances in terms of the number of slots required, slot reuse, throughput and the number of radio state switches.

  8. Highly automated protein backbone resonance assignment within a few hours: the strategy and software package

    International Nuclear Information System (INIS)

    Sequential resonance assignment represents an essential step towards the investigation of protein structure, dynamics, and interaction surfaces. Although the experimental sensitivity has significantly increased in recent years, with the availability of high field magnets and cryogenically cooled probes, resonance assignment, even of small globular proteins, still generally requires several days of data collection and analysis using standard protocols. Here we introduce the BATCH strategy for fast and highly automated backbone resonance assignment of 13C, 15N-labelled proteins. BATCH makes use of the fast data acquisition and analysis tools BEST, ASCOM, COBRA, and HADAMAC, recently developed in our laboratory. An improved Hadamard encoding scheme, presented here, further increases the performance of the HADAMAC experiment. A new software platform, interfaced to the NMRView software package, has been developed that enables highly automated NMR data processing and analysis, sequential resonance assignment, and 13C chemical shift extraction. We demonstrate for four small globular proteins that sequential resonance assignment can be routinely obtained within a few hours, or less, in a highly automated and robust way

  9. Introducing chemical biology applications to introductory organic chemistry students using series of weekly assignments.

    Science.gov (United States)

    Kanin, Maralee R; Pontrello, Jason K

    2016-03-01

    Calls to bring interdisciplinary content and examples into introductory science courses have increased, yet strategies that involve course restructuring often suffer from the need for a significant faculty commitment to motivate change. Minimizing the need for dramatic course reorganization, the structure, reactivity, and chemical biology applications of classes of biological monomers and polymers have been integrated into introductory organic chemistry courses through three series of semester-long weekly assignments that explored (a) Carbohydrates and Oligosaccharides, (b) Amino Acids, Peptides, and Proteins, and (c) Nucleosides, Nucleotides, and Nucleic Acids. Comparisons of unannounced pre- and post tests revealed improved understanding of a reaction introduced in the assignments, and course examinations evaluated cumulative assignment topics. Course surveys revealed that demonstrating biologically relevant applications consistently throughout the semesters enhanced student interest in the connection between basic organic chemistry content and its application to new and unfamiliar bio-related examples. Covering basic material related to these classes of molecules outside of the classroom opened lecture time to allow the instructor to further build on information developed through the weekly assignments, teaching advanced topics and applications typically not covered in an introductory organic chemistry lecture course. Assignments were implemented as homework, either with or without accompanying discussion, in both laboratory and lecture organic courses within the context of the existing course structures. © 2015 by The International Union of Biochemistry and Molecular Biology, 44:168-178, 2016. PMID:26560414

  10. Peer Assignment Review Process for Collaborative E-learning: Is the Student Learning Process Changing?

    Directory of Open Access Journals (Sweden)

    Evelyn Kigozi Kahiigi

    2013-01-01

    Full Text Available In recent years collaborative e-learning has been emphasized as a learning method that has facilitated knowledge construction and supported student learning. However some universities especially in developing country contexts are struggling to attain minimal educational benefits from its adoption and use. This paper investigates the application of a peer assignment review process for collaborative e-learning to third year undergraduate students. The study was aimed at evaluating the effect of the peer assignment review process on the student learning process. Data was collected using a survey questionnaire and analyzed using SPSS Version 16.0. While the student reported positive impact of the peer assignment review process in terms of facilitating students to put more effort and improve their work; quick feedback on their assignments; effective sharing and development of knowledge and information and the need of computer competence to manipulate the peer assignment review system, analysis of the quantitative data indicated that the process had limited effect on the learning process. This is attributed to lack of review skills, absence of lecturer scaffolding, low ICT literacy levels and change management.

  11. A statistical framework for accurate taxonomic assignment of metagenomic sequencing reads.

    Directory of Open Access Journals (Sweden)

    Hongmei Jiang

    Full Text Available The advent of next-generation sequencing technologies has greatly promoted the field of metagenomics which studies genetic material recovered directly from an environment. Characterization of genomic composition of a metagenomic sample is essential for understanding the structure of the microbial community. Multiple genomes contained in a metagenomic sample can be identified and quantitated through homology searches of sequence reads with known sequences catalogued in reference databases. Traditionally, reads with multiple genomic hits are assigned to non-specific or high ranks of the taxonomy tree, thereby impacting on accurate estimates of relative abundance of multiple genomes present in a sample. Instead of assigning reads one by one to the taxonomy tree as many existing methods do, we propose a statistical framework to model the identified candidate genomes to which sequence reads have hits. After obtaining the estimated proportion of reads generated by each genome, sequence reads are assigned to the candidate genomes and the taxonomy tree based on the estimated probability by taking into account both sequence alignment scores and estimated genome abundance. The proposed method is comprehensively tested on both simulated datasets and two real datasets. It assigns reads to the low taxonomic ranks very accurately. Our statistical approach of taxonomic assignment of metagenomic reads, TAMER, is implemented in R and available at http://faculty.wcas.northwestern.edu/hji403/MetaR.htm.

  12. On scheduling models for the frequency interval assignment problem with cumulative interferences

    Science.gov (United States)

    Kiatmanaroj, Kata; Artigues, Christian; Houssin, Laurent

    2016-05-01

    In this article, models and methods for solving a real-life frequency assignment problem based on scheduling theory are investigated. A realistic frequency assignment problem involving cumulative interference constraints in which the aim is to maximize the number of assigned users is considered. If interferences are assumed to be binary, a multiple carrier frequency assignment problem can be treated as a disjunctive scheduling problem since a user requesting a number of contiguous frequencies can be considered as a non-preemptive task with a processing time, and two interfering users can be modelled through a disjunctive constraint on the corresponding tasks. A binary interference version of the problem is constructed and a disjunctive scheduling model is derived. Based on the binary representation, two models are proposed. The first one relies on an interference matrix and the second one considers maximal cliques. A third, cumulative, model that yields a new class of scheduling problems is also proposed. Computational experiments show that the case-study frequency assignment problem can be solved efficiently with disjunctive scheduling techniques.

  13. Computerized fetal heart rate analysis in labor: detection of intervals with un-assignable baseline

    International Nuclear Information System (INIS)

    The fetal heart rate (FHR) is monitored during labor to assess fetal health. Both visual and computerized interpretations of the FHR depend on assigning a baseline to detect key features such as accelerations or decelerations. However, it is sometimes impossible to assign a baseline reliably, by eye or by numerical methods. To address this issue, we used the Oxford Intrapartum FHR Database to derive an algorithm based on the distribution of the FHR that detects heart rate intervals without a clear baseline. We aimed to recognize when a fetus cannot maintain its heart rate baseline and use this to assist computerized FHR analysis. Twenty-three FHR windows (15 min long) were used to develop the method. The algorithm was then validated by comparison with experts who classified 50 FHR windows into two groups: baseline assignable or un-assignable. The average agreement between experts (κ = 0.76) was comparable to the agreement between method and experts (κ = 0.67). The algorithm was used in 22 559 patients with intrapartum FHR records to retrospectively determine the incidence of intervals (defined as 15 min windows) that had un-assignable baselines. Sixty-six percent had one or more such episodes at some stage, most commonly after the onset of pushing (55%) and least commonly pre-labor (16%). These episodes are therefore relatively common. Their detection should improve the reliability of computerized analysis and allow further studies of what they signify clinically

  14. (13)C NMR assignments of regenerated cellulose from solid-state 2D NMR spectroscopy.

    Science.gov (United States)

    Idström, Alexander; Schantz, Staffan; Sundberg, Johan; Chmelka, Bradley F; Gatenholm, Paul; Nordstierna, Lars

    2016-10-20

    From the assignment of the solid-state (13)C NMR signals in the C4 region, distinct types of crystalline cellulose, cellulose at crystalline surfaces, and disordered cellulose can be identified and quantified. For regenerated cellulose, complete (13)C assignments of the other carbon regions have not previously been attainable, due to signal overlap. In this study, two-dimensional (2D) NMR correlation methods were used to resolve and assign (13)C signals for all carbon atoms in regenerated cellulose. (13)C-enriched bacterial nanocellulose was biosynthesized, dissolved, and coagulated as highly crystalline cellulose II. Specifically, four distinct (13)C signals were observed corresponding to conformationally different anhydroglucose units: two signals assigned to crystalline moieties and two signals assigned to non-crystalline species. The C1, C4 and C6 regions for cellulose II were fully examined by global spectral deconvolution, which yielded qualitative trends of the relative populations of the different cellulose moieties, as a function of wetting and drying treatments. PMID:27474592

  15. How to Improve the Peer Review Method: Free-Selection vs Assigned-Pair Protocol Evaluated in a Computer Networking Course

    Science.gov (United States)

    Papadopoulos, Pantelis M.; Lagkas, Thomas D.; Demetriadis, Stavros N.

    2012-01-01

    This study provides field research evidence on the efficiency of a "free-selection" peer review assignment protocol as compared to the typically implemented "assigned-pair" protocol. The study employed 54 sophomore students who were randomly assigned into three groups: Assigned-Pair (AP) (the teacher assigns student works for review to student…

  16. A Sequence of Assignments to Teach Object-Oriented Programming: a Constructivism Design-First Approach

    Directory of Open Access Journals (Sweden)

    Kleanthis C. THRAMBOULIDIS

    2003-04-01

    Full Text Available A constructivism-based approach to teach the object-oriented (OO programming paradigm in introductory computer courses was developed and used for several years. A multi-entity system from every-day life was adopted, to exploit the novice programmer's existing knowledge and build on it the OO conceptual framework. A sequence of assignments has been designed and developed to allow students exposed to this approach to experiment with Java programming and see how the OO conceptual framework is implemented. In this paper, this sequence of assignments is presented, discussed and evaluated in the context of the defined approach. The set of assignments that is based on a software-engineering-centered view and more precisely on a design-first approach, comes with the description of the strategy and graded hints that lead students to the final solution. Although it was first implemented as supplementary material, it quickly became the core component of the course.

  17. Applying a framework to evaluate assignment marking software: a case study on Lightwork

    Directory of Open Access Journals (Sweden)

    Eva Heinrich

    2012-03-01

    Full Text Available This article presents the findings of a qualitative evaluation on the effect of a specialised software tool on the efficiency and quality of assignment marking. The software, Lightwork, combines with the Moodle learning management system and provides support through marking rubrics and marker allocations. To enable the evaluation a framework has been developed that is based on an extensive literature review and interviews with academics in tertiary settings. The framework introduces key factors that are crucial to educationally sound and efficient assignment marking. The use of Lightwork is compared to the prior experiences of participants who used either electronic- or paper-based approaches. The findings are analysed using the framework. The study indicates that Lightwork is well suited to support efficient, high quality assignment marking. It is suggested that the evaluation framework can be used for future studies in this area.

  18. Assignment strategies for aliphatic protons in the solid-state in randomly protonated proteins

    International Nuclear Information System (INIS)

    Biological solid-state nuclear magnetic resonance spectroscopy developed rapidly in the past two decades and emerged as an important tool for structural biology. Resonance assignment is an essential prerequisite for structure determination and the characterization of motional properties of a molecule. Experiments, which rely on carbon or nitrogen detection, suffer, however, from low sensitivity. Recently, we introduced the RAP (Reduced Adjoining Protonation) labeling scheme, which allows to detect backbone and sidechain protons with high sensitivity and resolution. We present here a 1H-detected 3D (H)CCH experiment for assignment of backbone and sidechain proton resonances. Resolution is significantly improved by employing simultaneous 13CO and 13Cβ J-decoupling during evolution of the 13Cα chemical shift. In total, ∼90% of the 1Hα-13Cα backbone resonances of chicken α-spectrin SH3 could be assigned.

  19. Fixed channel assignment in cellular communication systems considering the whole set of packed patterns

    DEFF Research Database (Denmark)

    Borges, Pedro Manuel F. C.; Vidal, Rene Victor Valqui

    2000-01-01

    This paper addresses the problem of fixed channel assignment in cellular communication systems with nonuniform traffic distribution. The objective of the channel assignment is to minimise the average blocking probability. Methods for finding a good allocation can be based on first building a number...... of sets of cochannel cells or allocation patterns and then assigning them to channels. This usually implies that only a subset of the feasible region is attainable. The approach suggested in this paper uses the concept of packed pattern, since all patterns in an optimal solution will be of that kind...... further advantage of flexibility when dealing with extensions to the problem. A neighbouring structure was used, that facilitated the calculations while still allowing for the search in the entire solution space. A summary of extensive numerical experiments is presented. The outcome is an improvement over...

  20. Fixed channel assignment in cellular communication systems considering the whole set of packed patterns

    DEFF Research Database (Denmark)

    Borges, Pedro Manuel F. C.; Vidal, Rene Victor Valqui

    2000-01-01

    This paper addresses the problem of fixed channel assignment in cellular communication systems with nonuniform traffic distribution. The objective of the channel assignment is to minimise the average blocking probability. Methods for finding a good allocation can be based on first building a number...... of sets of cochannel cells or allocation patterns and then assigning them to channels. This usually implies that only a subset of the feasible region is attainable. The approach suggested in this paper uses the concept of packed pattern, since all patterns in an optimal solution will be of that kind....... With a constructive method, the entire set of packed patterns is built and used in the optimisation process. The complexity (large-scale and nonlinearity) of the resulting problem suggested the use of general search procedures (local search, tabu search, simulated annealing, etc.), which have the...

  1. An Experimental of IPv6 Address Assignment for Global Unicast Address Using NS-3

    Directory of Open Access Journals (Sweden)

    Dr. P. Sumathi

    2015-11-01

    Full Text Available Internet Protocol Version 6 (IPv6 is the next generation protocol and in the near future, routers are going to become more faster and new technologies are going to reduce the Internet delay. IPv6 global unicast address is similar to IPv4 public address and globally routable. This Global unicast address assignment process provides new function called Stateless Address Auto Configuration (SLAAC is a significant feature for host itself generating and configuring own addresses to enable communication. In this paper aims to describe experimental about IPv6 address assignment for global unicast address and evaluation of a host using various parameters such as Default router IP address, Throughput, Average End to End Delay and Domain Name Server (DNS IP address. The study was carried out using an open source Network Simulator (NS-3 to study and analyses the behavior of IPv6 address assignment.

  2. Narcissistic Reactions to Subordinate Role Assignment: The Case of the Narcissistic Follower.

    Science.gov (United States)

    Benson, Alex J; Jordan, Christian H; Christie, Amy M

    2016-07-01

    Narcissists aspire to be leaders and consequently may react negatively to being assigned a subordinate role, even though such roles may be integral to group functioning. In the first three studies, participants were assigned to a low status role (i.e., "employee"), high status role (i.e., "project manager"), or (in Studies 2 and 3) control condition. More narcissistic participants were less satisfied and discredited the role assignment more in the employee condition than in the project manager condition. Furthermore, more narcissistic participants displayed greater self-interest in the employee condition, relative to the project manager condition (Study 2), and less willingness to engage in behaviors to benefit the group in the employee condition, relative to the project manager and control conditions (Study 3). In Study 4, these findings were replicated in sports teams. Although there is nothing inherently negative about subordinate roles, narcissists perceive them negatively and react poorly to occupying them. PMID:27229677

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

    Directory of Open Access Journals (Sweden)

    Zhaocai Wang

    2015-10-01

    Full Text Available 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.

  4. How to Apply Assignment Methods that were Developed for Vehicular Traffic to Pedestrian Microsimulations

    CERN Document Server

    Roca, Vidal; Kretz, Tobias; Lehmann, Karsten; Hofsäß, Ingmar

    2014-01-01

    Applying assignment methods to compute user-equilibrium route choice is very common in traffic planning. It is common sense that vehicular traffic arranges in a user-equilibrium based on generalized costs in which travel time is a major factor. Surprisingly travel time has not received much attention for the route choice of pedestrians. In microscopic simulations of pedestrians the vastly dominating paradigm for the computation of the preferred walking direction is set into the direction of the (spatially) shortest path. For situations where pedestrians have travel time as primary determinant for their walking behavior it would be desirable to also have an assignment method in pedestrian simulations. To apply existing (road traffic) assignment methods with simulations of pedestrians one has to reduce the nondenumerably many possible pedestrian trajectories to a small subset of routes which represent the main, relevant, and significantly distinguished routing alternatives. All except one of these routes will m...

  5. On the vibrational assignment in the ground electronic state of NO3

    Science.gov (United States)

    Kawaguchi, Kentarou; Fujimori, Ryuji; Tang, Jian; Ishiwata, Takashi

    2015-08-01

    The vibration-rotational structure of the ground A2‧ state of the NO3 radical is re-considered, because Hirota (2015) presented an objection to the vibrational assignment of our previous papers (Kawaguchi et al., 2011, 2013; Fujimori et al., 2013). The present study examines the vibrational assignment in the following points, (1) laser induced fluorescence (LIF) spectra observed by Fukushima and Ishiwata in the 1050 cm-1 region, (2) Fourier transform (FT) spectra of vibrational bands from the v4 = 1 state, and a diode laser spectrum of the 2ν4 band. These considerations support our previous assignments, that is, ν3 + ν4 = 1492 cm-1 and ν3 = 1055 cm-1 for 14NO3.

  6. Assignment strategies for aliphatic protons in the solid-state in randomly protonated proteins

    Energy Technology Data Exchange (ETDEWEB)

    Asami, Sam; Reif, Bernd, E-mail: reif@tum.de [Leibniz-Institut fuer Molekulare Pharmakologie (FMP) (Germany)

    2012-01-15

    Biological solid-state nuclear magnetic resonance spectroscopy developed rapidly in the past two decades and emerged as an important tool for structural biology. Resonance assignment is an essential prerequisite for structure determination and the characterization of motional properties of a molecule. Experiments, which rely on carbon or nitrogen detection, suffer, however, from low sensitivity. Recently, we introduced the RAP (Reduced Adjoining Protonation) labeling scheme, which allows to detect backbone and sidechain protons with high sensitivity and resolution. We present here a {sup 1}H-detected 3D (H)CCH experiment for assignment of backbone and sidechain proton resonances. Resolution is significantly improved by employing simultaneous {sup 13}CO and {sup 13}C{beta} J-decoupling during evolution of the {sup 13}C{alpha} chemical shift. In total, {approx}90% of the {sup 1}H{alpha}-{sup 13}C{alpha} backbone resonances of chicken {alpha}-spectrin SH3 could be assigned.

  7. A stepwise multi-assignment spreadsheet model to select student teams

    Directory of Open Access Journals (Sweden)

    Bilge Gokhan Celik

    2013-06-01

    Full Text Available Student projects play a big role in engineering and management education. Most projects require students to work in teams, which allow students to practice their technical knowledge, foster the development of personal leadership skills, and teach the value of team accomplishments. One of the challenges of administering team projects is to create the best team compositions that give all teams the equal chance of success while maximizing interaction between students. The instructor should strive to balance each team so the team capabilities are as even as possible. Instructors also should take into account the performance of each student throughout the semester, when recreating teams for upcoming assignments. This paper presents a stepwise optimization that continues throughout the semester as the teams evolve from one assignment to another. Results show that this method can expose students to approximately 50% of their classmates within four team assignments and reasonable team grade variance.

  8. Method and system for assigning a confidence metric for automated determination of optic disc location

    Science.gov (United States)

    Karnowski, Thomas P.; Tobin, Jr., Kenneth W.; Muthusamy Govindasamy, Vijaya Priya; Chaum, Edward

    2012-07-10

    A method for assigning a confidence metric for automated determination of optic disc location that includes analyzing a retinal image and determining at least two sets of coordinates locating an optic disc in the retinal image. The sets of coordinates can be determined using first and second image analysis techniques that are different from one another. An accuracy parameter can be calculated and compared to a primary risk cut-off value. A high confidence level can be assigned to the retinal image if the accuracy parameter is less than the primary risk cut-off value and a low confidence level can be assigned to the retinal image if the accuracy parameter is greater than the primary risk cut-off value. The primary risk cut-off value being selected to represent an acceptable risk of misdiagnosis of a disease having retinal manifestations by the automated technique.

  9. Assigned experts with competitive goals withhold information in group decision making.

    Science.gov (United States)

    Toma, Claudia; Vasiljevic, Dimitri; Oberlé, Dominique; Butera, Fabrizio

    2013-03-01

    Expertise assignment has been proposed to improve unshared information pooling in group decision making. The current research revises this view by hypothesizing that expertise assignment is beneficial when group members have cooperative goals, but is detrimental when group members have competitive goals. Three-person groups were confronted with a hidden-profile task. Members were either assigned experts or not and were instructed to either cooperate or compete with other members. The results confirmed that expertise decreased unshared information pooling and repetitions in competition, while the reverse was found in cooperation. This interaction effect was mediated by self-other difference in perceived competence. Thus, expertise favours or hinders information sharing in group decision making as a function of members' cooperative or competitive goals. PMID:22577834

  10. Weapon target assignment problem satisfying expected damage probabilities based on ant colony algorithm

    Institute of Scientific and Technical Information of China (English)

    Wang Yanxia; Qian Longjun; Guo Zhi; Ma Lifeng

    2008-01-01

    A weapon target assignment (WTA) model satisfying expected damage probabilities with an ant colony algorithm is proposed.In order to save armament resource and attack the targets effectively,the strategy of the weapon assignment is that the target with greater threat degree has higher priority to be intercepted.The effect of this WTA model is not maximizing the damage probability but satisfying the whole assignment result.Ant colony algorithm has been successfully used in many fields,especially in combination optimization.The ant colony algorithm for this WTA problem is described by analyzing path selection,pheromone update,and tabu table update.The effectiveness of the model and the algorithm is demonstrated with an example.

  11. An automated framework for NMR resonance assignment through simultaneous slice picking and spin system forming

    KAUST Repository

    Abbas, Ahmed

    2014-04-19

    Despite significant advances in automated nuclear magnetic resonance-based protein structure determination, the high numbers of false positives and false negatives among the peaks selected by fully automated methods remain a problem. These false positives and negatives impair the performance of resonance assignment methods. One of the main reasons for this problem is that the computational research community often considers peak picking and resonance assignment to be two separate problems, whereas spectroscopists use expert knowledge to pick peaks and assign their resonances at the same time. We propose a novel framework that simultaneously conducts slice picking and spin system forming, an essential step in resonance assignment. Our framework then employs a genetic algorithm, directed by both connectivity information and amino acid typing information from the spin systems, to assign the spin systems to residues. The inputs to our framework can be as few as two commonly used spectra, i.e., CBCA(CO)NH and HNCACB. Different from the existing peak picking and resonance assignment methods that treat peaks as the units, our method is based on \\'slices\\', which are one-dimensional vectors in three-dimensional spectra that correspond to certain (N, H) values. Experimental results on both benchmark simulated data sets and four real protein data sets demonstrate that our method significantly outperforms the state-of-the-art methods while using a less number of spectra than those methods. Our method is freely available at http://sfb.kaust.edu.sa/Pages/Software.aspx. © 2014 Springer Science+Business Media.

  12. Integrated consensus-based frameworks for unmanned vehicle routing and targeting assignment

    Science.gov (United States)

    Barnawi, Waleed T.

    Unmanned aerial vehicles (UAVs) are increasingly deployed in complex and dynamic environments to perform multiple tasks cooperatively with other UAVs that contribute to overarching mission effectiveness. Studies by the Department of Defense (DoD) indicate future operations may include anti-access/area-denial (A2AD) environments which limit human teleoperator decision-making and control. This research addresses the problem of decentralized vehicle re-routing and task reassignments through consensus-based UAV decision-making. An Integrated Consensus-Based Framework (ICF) is formulated as a solution to the combined single task assignment problem and vehicle routing problem. The multiple assignment and vehicle routing problem is solved with the Integrated Consensus-Based Bundle Framework (ICBF). The frameworks are hierarchically decomposed into two levels. The bottom layer utilizes the renowned Dijkstra's Algorithm. The top layer addresses task assignment with two methods. The single assignment approach is called the Caravan Auction Algorithm (CarA) Algorithm. This technique extends the Consensus-Based Auction Algorithm (CBAA) to provide awareness for task completion by agents and adopt abandoned tasks. The multiple assignment approach called the Caravan Auction Bundle Algorithm (CarAB) extends the Consensus-Based Bundle Algorithm (CBBA) by providing awareness for lost resources, prioritizing remaining tasks, and adopting abandoned tasks. Research questions are investigated regarding the novelty and performance of the proposed frameworks. Conclusions regarding the research questions will be provided through hypothesis testing. Monte Carlo simulations will provide evidence to support conclusions regarding the research hypotheses for the proposed frameworks. The approach provided in this research addresses current and future military operations for unmanned aerial vehicles. However, the general framework implied by the proposed research is adaptable to any unmanned

  13. Comparing of the Deterministic Simulated Annealing Methods for Quadratic Assignment Problem

    Directory of Open Access Journals (Sweden)

    Mehmet Güray ÜNSAL

    2013-08-01

    Full Text Available In this study, Threshold accepting and Record to record travel methods belonging to Simulated Annealing that is meta-heuristic method by applying Quadratic Assignment Problem are statistically analyzed whether they have a significant difference with regard to the values of these two methods target functions and CPU time. Between the two algorithms, no significant differences are found in terms of CPU time and the values of these two methods target functions. Consequently, on the base of Quadratic Assignment Problem, the two algorithms are compared in the study have the same performance in respect to CPU time and the target functions values

  14. Density functional theory study of vibrational spectra, and assignment of fundamental modes of dacarbazine

    Indian Academy of Sciences (India)

    S Gunasekaran; S Kumaresan; R Arunbalaji; G Anand; S Srinivasan

    2008-05-01

    The FTIR and FT Raman spectra of dacarbazine were recorded in the regions 4000-400 and 3500-100 cm-1, respectively. The optimized geometry, wavenumber, polarizability and several thermodynamic properties of dacarbazine were studied using ab initio Hartree-Fock, MP2 and DFT methods. A complete vibrational assignment aided by the theoretical harmonic wavenumber analysis was proposed. The calculated harmonic vibrational frequencies were compared with experimental FTIR and FT Raman spectra. Based on the comparison between calculated and experimental results and the comparison with related molecules, assignments of fundamental vibrational modes were made. The X-ray geometry and experimental frequencies were compared with the results of theoretical calculations.

  15. An Efficient Implementation of the Robust Tabu Search Heuristic for Sparse Quadratic Assignment Problems

    CERN Document Server

    Paul, Gerald

    2010-01-01

    We propose and develop an efficient implementation of the robust tabu search heuristic for sparse quadratic assignment problems. The traditional implementation of the heuristic applicable to all quadratic assignment problems is of O(N^2) complexity per iteration for problems of size N. Using multiple priority queues to determine the next best move instead of scanning all possible moves, and using adjacency lists to minimize the operations needed to determine the cost of moves, we reduce the asymptotic complexity per iteration to O(N log N ). For practical sized problems, the complexity is O(N).

  16. A Variable Depth Sequential Search Heuristic for the Quadratic Assignment Problem

    CERN Document Server

    Paul, Gerald

    2009-01-01

    We develop a variable depth search heuristic for the quadratic assignment problem. The heuristic is based on sequential changes in assignments analogous to the Lin-Kernighan sequential edge moves for the traveling salesman problem. We treat unstructured problem instances of sizes 60 to 400. When the heuristic is used in conjunction with robust tabu search, we measure performance improvements of up to a factor of 15 compared to the use of robust tabu alone. The performance improvement increases as the problem size increases.

  17. A symmetry breaking mechanism by parity assignment in the noncommutative Higgs model

    CERN Document Server

    Yang, Masaki J S

    2015-01-01

    We apply the orbifold GUT mechanism to the noncommutative Higgs model. An assignment of $Z_{2}$ parity to the "pre-gauge fields" induces both of the parity assignments of the gauge and Higgs bosons, because these bosons are treated as some kind of composite fields in this formalism. As a result, a part of the gauge bosons and colored triplet Higgs boson receive heavy mass comparableto GUT scale, and the gauge symmetry is broken. No particle appear other than the SM ones in the massless states.

  18. A mitochondrial DNA SNP multiplex assigning Caucasians into 36 haplo- and subhaplogroups

    DEFF Research Database (Denmark)

    Mikkelsen, Martin; Rockenbauer, Eszter; Sørensen, Erik;

    2008-01-01

    Mitochondrial DNA (mtDNA) is maternally inherited without recombination events and has a high copy number, which makes mtDNA analysis feasible even when genomic DNA is sparse or degraded. Here, we present a SNP typing assay with 33 previously described mtDNA coding region SNPs for haplogroup...... previously typed by sequencing of the mitochondrial HV1 and HV2 regions. Haplogroup assignments based on mtDNA coding region SNPs and sequencing of HV1 and HV2 regions gave identical results for 27% of the samples, and except for one sample, differences in haplogroup assignments were at the subhaplogroup...

  19. Note. Optimal Storage Assignment Policies for Automated Storage and Retrieval Systems with Stochastic Demands

    OpenAIRE

    Ulrich W. Thonemann; Brandeau, Margaret L.

    1998-01-01

    In existing AS/RS research, storage assignment policies are evaluated based on the probability that item type j will be stored (and subsequently retrieved). This note applies the turnover-based and class-based assignment policies of Hausman et al. (1976) to a stochastic environment by identifying the kth pallet of item type j: Frequently demanded pallets are stored close to the input/output point and rarely demanded pallets are stored at the end of the storage rack. We consider a discrete sto...

  20. A Novel Dynamic Bandwidth Assignment Algorithm for Multi-Services EPONs

    Institute of Scientific and Technical Information of China (English)

    CHEN Xue; ZHANG Yang; HUANG Xiang; DENG Yu; SUN Shu-he

    2005-01-01

    In this paper we propose a novel Dynamic Bandwidth Assignment (DBA) algorithm for Ethernet-based Passive Optical Networks (EPON) which offers multiple kinds of services. To satisfy crucial Quality of Service (QoS) requirement for Time Division Multiplexing (TDM) service and achieve fair and high bandwidth utilization simultaneously, the algorithm integrates periodic, for TDM service, and polling granting for Ethernet service. Detailed simulation shows that the algorithm guarantees carrier-grade QoS for TDM service, high bandwidth utilization and good fairness of bandwidth assignment among Optical Network Units (ONU).

  1. Artificial intelligence applied to assigned merchandise location in retail sales systems

    Directory of Open Access Journals (Sweden)

    Cruz-Domínguez, O.

    2016-05-01

    Full Text Available This paper presents an option for improving the process of assigning storage locations for merchandise in a warehouse. A disadvantage of policies in the literature is that the merchandise is assigned allocation only according to the volume of sales and the rotation it presents. However, in some cases it is necessary to deal with other aspects such as family group membership, the physical characteristics of the products, and their sales pattern to design an integral policy. This paper presents an alternative to the afore- mentioned process using Flexsim®, artificial neural networks, and genetic algorithms.

  2. A symmetry-breaking mechanism by parity assignment in the noncommutative Higgs model

    International Nuclear Information System (INIS)

    We apply the orbifold grand unified theory (GUT) mechanism to the noncommutative Higgs model. An assignment of Z2 parity to the “constituent fields” induces parity assignments of both the gauge and Higgs bosons, because these bosons are treated as some kind of composite field in this formalism. As a result, some of the gauge bosons and the colored triplet Higgs boson receive heavy mass comparable to the GUT scale, and the gauge symmetry is broken. No particles appear other than the SM ones in the massless states

  3. Sufficiency conditions for pole assignment in column-regularizable implicit linear systems

    Czech Academy of Sciences Publication Activity Database

    Korotka, Tetiana; Zagalak, Petr; Loiseau, J. J.; Kučera, V.

    Szczecin: West Pomeranian University of Technology, 2012, s. 457-1-457-6. ISBN 978-1-4673-2123-5. [17th International Conference on Methods and Models in Automation & Robotics . Międzyzdroje (PL), 27.08.2012-30.08.2012] R&D Projects: GA ČR(CZ) GAP103/12/2431 Institutional support: RVO:67985556 Keywords : Linear systems * state feedback * pole assignment Subject RIV: BC - Control Systems Theory http://library.utia.cas.cz/separaty/2012/AS/zagalak-sufficiency conditions for pole assignment in column-regularizable implicit linear systems.pdf

  4. A State-of-the-Art Survey of Due Date Assignment and Scheduling Research: SLK, TWK and Other Due Date Assignment Models

    OpenAIRE

    Gordon, Valery; Proth, Jean-Marie; Chu, Chengbin

    1998-01-01

    This paper is a review of the results on the due date assignment and scheduling problems in the static deterministic case. In the problems under consideration, the objective is to find optimal values of the due dates and the related optimal schedule so that to minimize a given criterion based on the due dates and the completion times of jobs. The problems with due date determination have received considerable attention in the last ten years due to the introduction of new methods of inventory ...

  5. Longitudinal evaluation of the importance of homework assignment completion for the academic performance of middle school students with ADHD.

    Science.gov (United States)

    Langberg, Joshua M; Dvorsky, Melissa R; Molitor, Stephen J; Bourchtein, Elizaveta; Eddy, Laura D; Smith, Zoe; Schultz, Brandon K; Evans, Steven W

    2016-04-01

    The primary goal of this study was to longitudinally evaluate the homework assignment completion patterns of middle school age adolescents with ADHD, their associations with academic performance, and malleable predictors of homework assignment completion. Analyses were conducted on a sample of 104 middle school students comprehensively diagnosed with ADHD and followed for 18 months. Multiple teachers for each student provided information about the percentage of homework assignments turned in at five separate time points and school grades were collected quarterly. Results showed that agreement between teachers with respect to students assignment completion was high, with an intraclass correlation of .879 at baseline. Students with ADHD were turning in an average of 12% fewer assignments each academic quarter in comparison to teacher-reported classroom averages. Regression analyses revealed a robust association between the percentage of assignments turned in at baseline and school grades 18 months later, even after controlling for baseline grades, achievement (reading and math), intelligence, family income, and race. Cross-lag analyses demonstrated that the association between assignment completion and grades was reciprocal, with assignment completion negatively impacting grades and low grades in turn being associated with decreased future homework completion. Parent ratings of homework materials management abilities at baseline significantly predicted the percentage of assignments turned in as reported by teachers 18 months later. These findings demonstrate that homework assignment completion problems are persistent across time and an important intervention target for adolescents with ADHD. PMID:26931065

  6. Application of Calibrated Peer Review (CPR) Writing Assignments to Enhance Experiments with an Environmental Chemistry Focus

    Science.gov (United States)

    Margerum, Lawrence D.; Gulsrud, Maren; Manlapez, Ronald; Rebong, Rachelle; Love, Austin

    2007-01-01

    The browser-based software program, Calibrated Peer Review (CPR) developed by the Molecular Science Project enables instructors to create structured writing assignments in which students learn by writing and reading for content. Though the CPR project covers only one experiment in general chemistry, it might provide lab instructors with a method…

  7. The Role of Parental Attitudes in Children's Motivation toward Homework Assignments

    Science.gov (United States)

    Madjar, Nir; Shklar, Nitzan; Moshe, Limor

    2016-01-01

    Completing homework assignments is part of students' daily routine. Because this task is embedded within the home environment, parents play an important role in homework-related attitudes and behaviors. Recent findings have demonstrated that effort and cognitive engagement while doing homework are better proximal predictors of positive outcomes…

  8. Enhancing Mathematics Achievement of Elementary School Students through Homework Assignments Enriched with Metacognitive Questions

    Science.gov (United States)

    Özcan, Zeynep Çigdem; Erktin, Emine

    2015-01-01

    Metacognitive enrichment has become an important component of modern mathematics instruction. This study investigates the effect of homework assignments enriched with metacognitive questions on students' mathematics achievement and homework behaviors. A quasi-experimental design with pre- and post-test measures and two groups (experimental and…

  9. 42 CFR 424.82 - Revocation of right to receive assigned benefits.

    Science.gov (United States)

    2010-10-01

    ..., facility, or health care delivery system to which Medicare may make payment under § 424.80(b) (1), (2), or... 42 Public Health 3 2010-10-01 2010-10-01 false Revocation of right to receive assigned benefits. 424.82 Section 424.82 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH...

  10. Using Content Reading Assignments in a Psychology Course to Teach Critical Reading Skills

    Science.gov (United States)

    Van Camp, Debbie; Van Camp, Wesley

    2013-01-01

    Liberal arts students are expected to graduate college with fully developed critical reading and writing skills. However, for a variety of reasons these skills are not always as well developed as they might be--both during and upon completion of college. This paper describes a reading assignment that was designed to increase students'…

  11. Applying a Framework to Evaluate Assignment Marking Software: A Case Study on Lightwork

    Science.gov (United States)

    Heinrich, Eva; Milne, John

    2012-01-01

    This article presents the findings of a qualitative evaluation on the effect of a specialised software tool on the efficiency and quality of assignment marking. The software, Lightwork, combines with the Moodle learning management system and provides support through marking rubrics and marker allocations. To enable the evaluation a framework has…

  12. Structural characterization of homogalacturonan by NMR spectroscopy - assignment of reference compounds

    DEFF Research Database (Denmark)

    Petersen, Bent O.; Meier, Sebastian; Duus, Jens Øllgaard;

    2008-01-01

    Complete assignment of 1H and 13C NMR of six hexagalactopyranuronic acids with varying degree and pattern of methyl esterification is reported. The NMR experiments were run at room temperature using approximately 2 mg of sample making this method convenient for studying the structure of...

  13. My Program Is Ok--Am I? Computing Freshmen's Experiences of Doing Programming Assignments

    Science.gov (United States)

    Kinnunen, Paivi; Simon, Beth

    2012-01-01

    This article provides insight into how computing majors experience the process of doing programming assignments in their first programming course. This grounded theory study sheds light on the various processes and contexts through which students constantly assess their self-efficacy as a programmer. The data consists of a series of four…

  14. 24 CFR 206.107 - Mortgagee election of assignment or shared premium option.

    Science.gov (United States)

    2010-04-01

    ... 24 Housing and Urban Development 2 2010-04-01 2010-04-01 false Mortgagee election of assignment or shared premium option. 206.107 Section 206.107 Housing and Urban Development Regulations Relating to Housing and Urban Development (Continued) OFFICE OF ASSISTANT SECRETARY FOR HOUSING-FEDERAL...

  15. Assignments of rights and obligations under a gas sales contract; CD-ROM ed.

    Energy Technology Data Exchange (ETDEWEB)

    Kowch, J.R.M.

    1996-05-01

    A general overview of the principles of assignment in a gas sales contract was presented. Assignment is a process wherein the rights or obligations under a contract are transferred from one of the contracting parties to a third party. It is, in other words, the introduction of a new party to the original contractual relationship. Under the rights and obligations of a gas sales contract, the most important right of the seller is to have its gas taken and to be paid. Likewise, the most important obligation of the buyer is to take the gas and pay for it. An assignment by either party has the potential to alter the original expectations of the parties or the basis of which they committed to the contract in the first place. Prior to deregulation and unbundling initiatives, gas sellers and buyers could enter a 20 year sales contract and deal exclusively with each other over the entire 20 year term. Since deregulation, there are more players, and a higher level of corporate acquisitions, divestitures, rationalizations, and restructuring. Today, there are greater chances than ever before that the original party to a contract may change, or that certain rights and obligations may be assigned to a third party and affect the expectations under the contract.

  16. Language Arts Performance Assignments: Generalizability Studies of Local and Central Ratings

    Science.gov (United States)

    Martinez, Jose Felipe; Goldschmidt, Pete; Niemi, David; Baker, Eva L.; Sylvester, Roxanne M.

    2007-01-01

    We conducted generalizability studies to examine the extent to which ratings of language arts performance assignments, administered in a large, diverse, urban district to students in second through ninth grades, result in reliable and precise estimates of true student performance. The results highlight three important points when considering the…

  17. Structured Role Assignment and Other Techniques for Facilitating Process in Adolescent Psychotherapy Groups.

    Science.gov (United States)

    Corder, Billie F.; Whiteside, Reid

    1990-01-01

    Describes application of techniques for structuring interchange and feedback process in adolescent psychotherapy groups, including random assignment of "roles" for each member during sessions, "parent hot seat" exercises, group goal booklets, and negotiation exercises. Techniques discussed have proven helpful in ensuring effective group…

  18. Identification of new transitions and mass assignments of levels in $^{143-153}$Pr

    CERN Document Server

    Wang, E H; Hamilton, J H; Ramayya, A V; Hwang, J K; Eldridge, J M; Navin, A; Rejmund, M; Bhattacharyya, S; Liu, S H; Brewer, N T; Luo, Y X; Rasmussen, J O; Liu, H L; Zhou, H; Liu, Y X; Li, H J; Sun, Y; Xu, F R; Zhu, S J; Ter-Akopian, G M; Oganessian, Yu Ts; Caamaño, M; Clément, E; Delaune, O; Farget, F; de France, G; Jacquot, B

    2015-01-01

    The previously reported levels assigned to 151,152,153Pr have recently been called into question regarding their mass assignment. The above questioned level assignments are clarified by measuring g-transitions tagged with A and Z in an in-beam experiment in addition to the measurements from 252Cf spontaneous fission (SF) and establish new spectroscopic information from $N=84$ to $N=94$ in the Pr isotopic chain. The isotopic chain 143-153Pr has been studied from the spontaneous fission of 252Cf by using Gammasphere and also from the measurement of the prompt g-rays in coincidence with isotopically-identified fission fragments using VAMOS++ and EXOGAM at GANIL. The latter were produced using 238U beams on a 9Be target at energies around the Coulomb barrier. The g-g-g-g data from 252Cf (SF) and those from the GANIL in-beam A- and Z-gated spectra were combined to unambiguously assign the various transitions and levels in 151,152,153Pr and other isotopes. New transitions and bands in 145,147,148,149,150Pr were ide...

  19. Using the Same Problem with Different Techniques in Programming Assignments: An Empirical Study of Its Effectiveness

    Science.gov (United States)

    Newby, Michael; Nguyen, ThuyUyen H.

    2010-01-01

    This paper examines the effectiveness of a technique that first appeared as a Teaching Tip in the Journal of Information Systems Education. In this approach the same problem is used in every programming assignment within a course, but the students are required to use different programming techniques. This approach was used in an intermediate C++…

  20. Promoting Discussion in Peer Instruction: Discussion Partner Assignment and Accountability Scoring Mechanisms

    Science.gov (United States)

    Chou, Chih-Yueh; Lin, Pin-Hsun

    2015-01-01

    Peer instruction (PI) involves students answering questions and peer discussion learning activities. PI can enhance student performance and engagement in classroom instruction. However, some students do not engage in the discussions. This study proposes two mechanisms, discussion partner assignment and accountability scoring mechanisms, to form…

  1. I'll Begin My Statistics Assignment Tomorrow: The Relationship between Statistics Anxiety and Academic Procrastination.

    Science.gov (United States)

    Onwuegbuzie, Anthony J.

    Statistics anxiety, which is experienced by as many as 80% of graduate students, has been found to weaken performance in statistics and research methodology courses. This study examined the prevalence of procrastination on statistics assignments among graduate students and the relationship between academic procrastination and six dimensions of…

  2. The Create-a-Game Assignment and English Teaching Ability of Japanese College Students

    Science.gov (United States)

    Kobayashi, Futoshi

    2013-01-01

    Japanese college students (N = 18) aspiring to become English teachers in junior or senior high schools studied several examples of educational games and created their own English games as an assignment during the last two weeks of an educational psychology course. Results indicated (1) a significant increase between pre- and post-…

  3. NMR assignment of the amylase-binding protein A from Streptococcus parasanguinis.

    Science.gov (United States)

    Liu, Bing; Zhu, Fan; Wu, Hui; Matthews, Stephen

    2015-04-01

    Streptococcus parasanguinis is a primary colonizer of tooth surfaces in the oral cavity. Amylase-binding protein A (AbpA) from S. parasanguinis is responsible for the recruitment of salivary amylase to bacterial surface, which plays an important role in the development of oral biofilms. Here, we describe the essentially complete NMR assignments for AbpA. PMID:25016927

  4. 41 CFR 102-75.650 - When must DOI request assignment of the property?

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false When must DOI request...-75.650 When must DOI request assignment of the property? Within 30 calendar days after the expiration of the 30-calendar day period specified in § 102-75.640, DOI must submit to the disposal agency...

  5. The assignment of elementary school pupils to secondary school types: A correlational study.

    NARCIS (Netherlands)

    P. Groeneboom; J. Hoogstraten; G.J. Mellenbergh; J.P. van Santen

    1978-01-01

    Examined relationships between personality, intelligence, and achievement measures and the allocation to 1 of 6 secondary school types; Ss were 135 6th graders. Results of discriminant analyses indicated that personality scores predicted only a small portion of pupil assignment, whereas achievement

  6. An Assignment Scheme to Control Multiple Pan/Tilt Cameras for 3D Video

    Directory of Open Access Journals (Sweden)

    Sofiane Yous

    2007-02-01

    Full Text Available This paper presents an assignment scheme to control multiple Pan/Tilt (PT cameras for 3D video of a moving object. The system combines static wide field of view (FOV cameras and active Pan/Tilt (PT cameras with narrow FOV within a networked platform. We consider the general case where the active cameras have as high resolution as they can capture only partial views of the object. The major issue is the automatic assignment of each active camera to an appropriate part of the object in order to get high-resolution images of the whole object. We propose an assignment scheme based on the analysis of a coarse 3D shape produced in a preprocessing step based on the wide-FOV images. For each high-resolution camera, we evaluate the visibility toward the different parts of the shape, corresponding to different orientations of the camera and with respect to its FOV. Then, we assign each camera to one orientation in order to get high visibility of the whole object. The continuously captured images are saved to be used offline in the reconstruction of the object. For a temporal extension of this scheme, we involve, in addition to the visibility analysis, the last camera orientation as an additional constraint. This allows smooth and optimized camera movements.

  7. Encoding Featherweight Java with Assignment and Immutability using The Coq Proof Assistant

    DEFF Research Database (Denmark)

    Mackay, Julian; Mehnert, Hannes; Potanin, Alex;

    2012-01-01

    We develop a mechanized proof of Featherweight Java with Assignment and Immutability in the Coq proof assistant. This is a step towards more machine-checked proofs of a non-trivial type system. We used object immutability close to that of IGJ [9] . We describe the challenges of the mech- anisation...

  8. 76 FR 10569 - Request for Comments on the Internet Assigned Numbers Authority (IANA) Functions

    Science.gov (United States)

    2011-02-25

    ... functions contract. Given the importance of the Internet as a global medium supporting economic growth and... Internet Assigned Numbers Authority (IANA) Functions AGENCY: National Telecommunications and Information... preserving a stable and secure Internet Domain Name System (DNS). Critical to the DNS is the...

  9. Random Assignment within Schools: Lessons Learned from the Teach for America Experiment

    Science.gov (United States)

    Glazerman, Steven

    2012-01-01

    Randomized trials are a common way to provide rigorous evidence on the impacts of education programs. This article discusses the trade-offs associated with study designs that involve random assignment of students within schools and describes the experience from one such study of Teach for America (TFA). The TFA experiment faced challenges with…

  10. What Makes Hotel Expatriates Remain in Their Overseas Assignments: A Grounded Theory Study

    Science.gov (United States)

    Ho, Zoe Ju-Yu

    2012-01-01

    In this study the researcher uses a qualitative research design to discover what makes hotel expatriates remain in their overseas assignments. In-depth interviews, participant observations, and personal documents are used as data collection methods. Four hotel expatriates are recruited as participants of the study. The collected interview…

  11. 7 CFR 929.150 - Transfer or assignment of sales history.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 8 2010-01-01 2010-01-01 false Transfer or assignment of sales history. 929.150 Section 929.150 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF...

  12. 75 FR 36102 - Recruitment of Sites for Assignment of National Health Service Corps (NHSC) Personnel Obligated...

    Science.gov (United States)

    2010-06-24

    ..., and/or oral health services to a primary medical care, mental health, or dental HPSA of greatest... allows the site to assess the age, sex, race/ethnicity of, and provider encounter records for, its user... the assignment of NHSC scholarship recipients who are physician assistants (PAs); (4) dental...

  13. The Facebook-in-Action: Challenging, Harnessing and Enhancing Students Class Assignments and Projects

    Science.gov (United States)

    Saifudin, Adam Mohd; Yacob, Aizan; Saad, Rohaizah

    2016-01-01

    Issues of universities students harnessing and capitalizing the usage of Facebook for their own learning capabilities and effective thinking is always the focus of education scholars, in assessing the quality class assignments and projects produced by them. Therefore, Facebook is now becoming unbearable influence since the internet activation in…

  14. A Novel Credit Assignment to a Rule with Probabilistic State Transition

    OpenAIRE

    Uemura, Wataru

    2010-01-01

    In this chapter, we have proposed a novel credit assignment method similar to profit sharing which considers the aliasing problem and the probabilistic state transition. We show that the condition to learn in a POMDP is to distribute equal rewards to rules at the same

  15. The Role of Extra-Credit Assignments in the Teaching of World Languages

    Science.gov (United States)

    Alley, David

    2011-01-01

    The granting of extra credit is a hotly debated topic in all fields of education. Teachers are reluctant to offer extra credit for fear of inflating grades, but students are persistent in their demands for extra-credit points to which they have become accustomed. This article considers extra-credit assignments in the teaching of world languages.…

  16. A conodont-based Middle Triassic age assignment for the Luoping Biota of Yunnan, China

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The Luoping Biota consists of abundant and well-preserved marine fishes, reptiles, invertebrates, and plants. It occurs in the Middle Triassic Guanling Formation in Daaozi Village of Luoping County, Yun-nan Province, China. Based on conodonts, the Luoping Biota is determined to lie within the Nicoraella kockeli Zone, which is assigned to the Pelsonian substage of the Anisian.

  17. 3 CFR - Assignment of Reporting Functions Under the Supplemental Appropriations Act, 2009

    Science.gov (United States)

    2010-01-01

    ... Supplemental Appropriations Act, 2009 Presidential Documents Other Presidential Documents Memorandum of July 17, 2009 Assignment of Reporting Functions Under the Supplemental Appropriations Act, 2009 Memorandum for... Supplemental Appropriations Act, 2009 (Public Law 111-32), as follows: 1. To the Attorney General, of...

  18. 78 FR 38061 - Recruitment of Sites for Assignment of Corps Personnel Obligated Under the National Health...

    Science.gov (United States)

    2013-06-25

    ... HUMAN SERVICES Health Resources and Services Administration Recruitment of Sites for Assignment of Corps... Shortage Designation, Bureau of Clinician Recruitment and Service, HRSA, as of January 1, 2013, for... Recruitment and Service, 999 18th Street, Denver, CO 80202. This information will be considered in...

  19. 77 FR 22329 - Recruitment of Sites for Assignment of Corps Personnel Obligated Under the National Health...

    Science.gov (United States)

    2012-04-13

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF HEALTH AND HUMAN SERVICES Health Resources and Services Administration Recruitment of Sites for Assignment of Corps... Corps, Bureau of Clinician Recruitment and Service, 5600 Fishers Lane, Room 8-37, Rockville, MD...

  20. 47 CFR 73.3550 - Requests for new or modified call sign assignments.

    Science.gov (United States)

    2010-10-01

    ... and authorization system accessible through the Internet's World Wide Web by specifying http://www.fcc... conforming call sign. (e) Call signs beginning with the letter “K” will not be assigned to stations located... and for only the most compelling reasons. (k) Four-letter combinations commencing with “W” or...