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Sample records for permutation flow shop

  1. Discrete bat algorithm for optimal problem of permutation flow shop scheduling.

    PubMed

    Luo, Qifang; Zhou, Yongquan; Xie, Jian; Ma, Mingzhi; Li, Liangliang

    2014-01-01

    A discrete bat algorithm (DBA) is proposed for optimal permutation flow shop scheduling problem (PFSP). Firstly, the discrete bat algorithm is constructed based on the idea of basic bat algorithm, which divide whole scheduling problem into many subscheduling problems and then NEH heuristic be introduced to solve subscheduling problem. Secondly, some subsequences are operated with certain probability in the pulse emission and loudness phases. An intensive virtual population neighborhood search is integrated into the discrete bat algorithm to further improve the performance. Finally, the experimental results show the suitability and efficiency of the present discrete bat algorithm for optimal permutation flow shop scheduling problem.

  2. An effective hybrid immune algorithm for solving the distributed permutation flow-shop scheduling problem

    NASA Astrophysics Data System (ADS)

    Xu, Ye; Wang, Ling; Wang, Shengyao; Liu, Min

    2014-09-01

    In this article, an effective hybrid immune algorithm (HIA) is presented to solve the distributed permutation flow-shop scheduling problem (DPFSP). First, a decoding method is proposed to transfer a job permutation sequence to a feasible schedule considering both factory dispatching and job sequencing. Secondly, a local search with four search operators is presented based on the characteristics of the problem. Thirdly, a special crossover operator is designed for the DPFSP, and mutation and vaccination operators are also applied within the framework of the HIA to perform an immune search. The influence of parameter setting on the HIA is investigated based on the Taguchi method of design of experiment. Extensive numerical testing results based on 420 small-sized instances and 720 large-sized instances are provided. The effectiveness of the HIA is demonstrated by comparison with some existing heuristic algorithms and the variable neighbourhood descent methods. New best known solutions are obtained by the HIA for 17 out of 420 small-sized instances and 585 out of 720 large-sized instances.

  3. A multipopulation PSO based memetic algorithm for permutation flow shop scheduling.

    PubMed

    Liu, Ruochen; Ma, Chenlin; Ma, Wenping; Li, Yangyang

    2013-01-01

    The permutation flow shop scheduling problem (PFSSP) is part of production scheduling, which belongs to the hardest combinatorial optimization problem. In this paper, a multipopulation particle swarm optimization (PSO) based memetic algorithm (MPSOMA) is proposed in this paper. In the proposed algorithm, the whole particle swarm population is divided into three subpopulations in which each particle evolves itself by the standard PSO and then updates each subpopulation by using different local search schemes such as variable neighborhood search (VNS) and individual improvement scheme (IIS). Then, the best particle of each subpopulation is selected to construct a probabilistic model by using estimation of distribution algorithm (EDA) and three particles are sampled from the probabilistic model to update the worst individual in each subpopulation. The best particle in the entire particle swarm is used to update the global optimal solution. The proposed MPSOMA is compared with two recently proposed algorithms, namely, PSO based memetic algorithm (PSOMA) and hybrid particle swarm optimization with estimation of distribution algorithm (PSOEDA), on 29 well-known PFFSPs taken from OR-library, and the experimental results show that it is an effective approach for the PFFSP.

  4. A new Nawaz-Enscore-Ham-based heuristic for permutation flow-shop problems with bicriteria of makespan and machine idle time

    NASA Astrophysics Data System (ADS)

    Liu, Weibo; Jin, Yan; Price, Mark

    2016-10-01

    A new heuristic based on the Nawaz-Enscore-Ham algorithm is proposed in this article for solving a permutation flow-shop scheduling problem. A new priority rule is proposed by accounting for the average, mean absolute deviation, skewness and kurtosis, in order to fully describe the distribution style of processing times. A new tie-breaking rule is also introduced for achieving effective job insertion with the objective of minimizing both makespan and machine idle time. Statistical tests illustrate better solution quality of the proposed algorithm compared to existing benchmark heuristics.

  5. Effective Iterated Greedy Algorithm for Flow-Shop Scheduling Problems with Time lags

    NASA Astrophysics Data System (ADS)

    ZHAO, Ning; YE, Song; LI, Kaidian; CHEN, Siyu

    2017-03-01

    Flow shop scheduling problem with time lags is a practical scheduling problem and attracts many studies. Permutation problem(PFSP with time lags) is concentrated but non-permutation problem(non-PFSP with time lags) seems to be neglected. With the aim to minimize the makespan and satisfy time lag constraints, efficient algorithms corresponding to PFSP and non-PFSP problems are proposed, which consist of iterated greedy algorithm for permutation(IGTLP) and iterated greedy algorithm for non-permutation (IGTLNP). The proposed algorithms are verified using well-known simple and complex instances of permutation and non-permutation problems with various time lag ranges. The permutation results indicate that the proposed IGTLP can reach near optimal solution within nearly 11% computational time of traditional GA approach. The non-permutation results indicate that the proposed IG can reach nearly same solution within less than 1% computational time compared with traditional GA approach. The proposed research combines PFSP and non-PFSP together with minimal and maximal time lag consideration, which provides an interesting viewpoint for industrial implementation.

  6. A hybrid quantum-inspired genetic algorithm for multiobjective flow shop scheduling.

    PubMed

    Li, Bin-Bin; Wang, Ling

    2007-06-01

    This paper proposes a hybrid quantum-inspired genetic algorithm (HQGA) for the multiobjective flow shop scheduling problem (FSSP), which is a typical NP-hard combinatorial optimization problem with strong engineering backgrounds. On the one hand, a quantum-inspired GA (QGA) based on Q-bit representation is applied for exploration in the discrete 0-1 hyperspace by using the updating operator of quantum gate and genetic operators of Q-bit. Moreover, random-key representation is used to convert the Q-bit representation to job permutation for evaluating the objective values of the schedule solution. On the other hand, permutation-based GA (PGA) is applied for both performing exploration in permutation-based scheduling space and stressing exploitation for good schedule solutions. To evaluate solutions in multiobjective sense, a randomly weighted linear-sum function is used in QGA, and a nondominated sorting technique including classification of Pareto fronts and fitness assignment is applied in PGA with regard to both proximity and diversity of solutions. To maintain the diversity of the population, two trimming techniques for population are proposed. The proposed HQGA is tested based on some multiobjective FSSPs. Simulation results and comparisons based on several performance metrics demonstrate the effectiveness of the proposed HQGA.

  7. A new encoding scheme-based hybrid algorithm for minimising two-machine flow-shop group scheduling problem

    NASA Astrophysics Data System (ADS)

    Liou, Cheng-Dar; Hsieh, Yi-Chih; Chen, Yin-Yann

    2013-01-01

    This article investigates the two-machine flow-shop group scheduling problem (GSP) with sequence-dependent setup and removal times, and job transportation times between machines. The objective is to minimise the total completion time. As known, this problem is an NP-hard problem and generalises the typical two-machine GSPs. In this article, a new encoding scheme based on permutation representation is proposed to transform a random job permutation to a feasible permutation for GSPs. The proposed encoding scheme simultaneously determines both the sequence of jobs in each group and the sequence of groups. By reasonably combining particle swarm optimisation (PSO) and genetic algorithm (GA), we develop a fast and easily implemented hybrid algorithm (HA) for solving the considered problems. The effectiveness and efficiency of the proposed HA are demonstrated and compared with those of standard PSO and GA by numerical results of various tested instances with group numbers up to 20. In addition, three different lower bounds are developed to evaluate the solution quality of the HA. Limited numerical results indicate that the proposed HA is a viable and effective approach for the studied two-machine flow-shop group scheduling problem.

  8. An effective PSO-based memetic algorithm for flow shop scheduling.

    PubMed

    Liu, Bo; Wang, Ling; Jin, Yi-Hui

    2007-02-01

    This paper proposes an effective particle swarm optimization (PSO)-based memetic algorithm (MA) for the permutation flow shop scheduling problem (PFSSP) with the objective to minimize the maximum completion time, which is a typical non-deterministic polynomial-time (NP) hard combinatorial optimization problem. In the proposed PSO-based MA (PSOMA), both PSO-based searching operators and some special local searching operators are designed to balance the exploration and exploitation abilities. In particular, the PSOMA applies the evolutionary searching mechanism of PSO, which is characterized by individual improvement, population cooperation, and competition to effectively perform exploration. On the other hand, the PSOMA utilizes several adaptive local searches to perform exploitation. First, to make PSO suitable for solving PFSSP, a ranked-order value rule based on random key representation is presented to convert the continuous position values of particles to job permutations. Second, to generate an initial swarm with certain quality and diversity, the famous Nawaz-Enscore-Ham (NEH) heuristic is incorporated into the initialization of population. Third, to balance the exploration and exploitation abilities, after the standard PSO-based searching operation, a new local search technique named NEH_1 insertion is probabilistically applied to some good particles selected by using a roulette wheel mechanism with a specified probability. Fourth, to enrich the searching behaviors and to avoid premature convergence, a simulated annealing (SA)-based local search with multiple different neighborhoods is designed and incorporated into the PSOMA. Meanwhile, an effective adaptive meta-Lamarckian learning strategy is employed to decide which neighborhood to be used in SA-based local search. Finally, to further enhance the exploitation ability, a pairwise-based local search is applied after the SA-based search. Simulation results based on benchmarks demonstrate the effectiveness

  9. Multi-objective two-stage multiprocessor flow shop scheduling - a subgroup particle swarm optimisation approach

    NASA Astrophysics Data System (ADS)

    Huang, Rong-Hwa; Yang, Chang-Lin; Hsu, Chun-Ting

    2015-12-01

    Flow shop production system - compared to other economically important production systems - is popular in real manufacturing environments. This study focuses on the flow shop with multiprocessor scheduling problem (FSMP), and develops an improved particle swarm optimisation heuristic to solve it. Additionally, this study designs an integer programming model to perform effectiveness and robustness testing on the proposed heuristic. Experimental results demonstrate a 10% to 50% improvement in the effectiveness of the proposed heuristic in small-scale problem tests, and a 10% to 40% improvement in the robustness of the heuristic in large-scale problem tests, indicating extremely satisfactory performance.

  10. Streaming a single job in a flow shop

    SciTech Connect

    Benli, O.

    1994-12-31

    Very simply stated, lot streaming is moving some portion of a process batch ahead to begin a downstream operation. The problem to be considered in this paper is the following: a single job consisting of U units is to be processed on m machines. Given the maximum number of possible transfer batches in between the machines, the problem is to find the timing and the size of the transfer batches ({open_quotes}sublots{close_quotes}) so as to minimize the makespan. A general formulation of this problem is presented as a mixed integer linear program. This formulation allows for different number of sublots among the stages, variable length sublots, and intermittent idling on a machine. By restricting some of the parameter values (such as m = 2) or the constraints (such as no idling of machines), the well known results from literature can be obtained. The formulation basically is a periodic review model with variable period lengths. Furthermore, the approach is general enough to permit the use of other objective functions such as minimizing the mean flow time (in this case the objective function is quadratic). The possible significance of this generalized approach in the integration of production planning and machine scheduling will be discussed in conclusion.

  11. A comparison of rescheduling policies for online flow shops to minimize tardiness

    NASA Astrophysics Data System (ADS)

    Tokola, Henri; Ahlroth, Lauri; Niemi, Esko

    2014-02-01

    In practical situations, flow shops usually have some policies on rescheduling previously scheduled jobs. This article compares three of these rescheduling policies: an unrestricted one where previously scheduled jobs can be moved freely, one where jobs can only be moved forward in the schedule, and one where jobs that have already been scheduled cannot be moved at all. The comparison is performed by considering the minimization of tardiness. While unrestricted rescheduling should generally give the best solution, moving jobs only forward can be more practical as in general production, material orders can be delayed but seldom advanced. This article points out that moving jobs only forward is not significantly worse than the unrestricted scheduling. When cases with small numbers of jobs and machines are analysed both policies give similar tardiness. Numerical experiments show that the differences between these two rescheduling policies are rather small in larger problems as well.

  12. Scheduling of flow shop problems on 3 machines in fuzzy environment with double transport facility

    NASA Astrophysics Data System (ADS)

    Sathish, Shakeela; Ganesan, K.

    2016-06-01

    Flow shop scheduling is a decision making problem in production and manufacturing field which has a significant impact on the performance of an organization. When the machines on which jobs are to be processed are placed at different places, the transportation time plays a significant role in production. Further two different transport agents where 1st takes the job from 1st machine to 2nd machine and then returns back to the first machine and the 2nd takes the job from 2nd machine to 3rd machine and then returns back to the 2nd machine are also considered. We propose a method to minimize the total make span; without converting the fuzzy processing time to classical numbers by using a new type of fuzzy arithmetic and a fuzzy ranking method. A numerical example is provided to explain the proposed method.

  13. Efficient bounding schemes for the two-center hybrid flow shop scheduling problem with removal times.

    PubMed

    Hidri, Lotfi; Gharbi, Anis; Louly, Mohamed Aly

    2014-01-01

    We focus on the two-center hybrid flow shop scheduling problem with identical parallel machines and removal times. The job removal time is the required duration to remove it from a machine after its processing. The objective is to minimize the maximum completion time (makespan). A heuristic and a lower bound are proposed for this NP-Hard problem. These procedures are based on the optimal solution of the parallel machine scheduling problem with release dates and delivery times. The heuristic is composed of two phases. The first one is a constructive phase in which an initial feasible solution is provided, while the second phase is an improvement one. Intensive computational experiments have been conducted to confirm the good performance of the proposed procedures.

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

    NASA Astrophysics Data System (ADS)

    Wang, Shijin; Liu, Ming

    2016-02-01

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

  15. Linear models: permutation methods

    USGS Publications Warehouse

    Cade, B.S.; Everitt, B.S.; Howell, D.C.

    2005-01-01

    Permutation tests (see Permutation Based Inference) for the linear model have applications in behavioral studies when traditional parametric assumptions about the error term in a linear model are not tenable. Improved validity of Type I error rates can be achieved with properly constructed permutation tests. Perhaps more importantly, increased statistical power, improved robustness to effects of outliers, and detection of alternative distributional differences can be achieved by coupling permutation inference with alternative linear model estimators. For example, it is well-known that estimates of the mean in linear model are extremely sensitive to even a single outlying value of the dependent variable compared to estimates of the median [7, 19]. Traditionally, linear modeling focused on estimating changes in the center of distributions (means or medians). However, quantile regression allows distributional changes to be estimated in all or any selected part of a distribution or responses, providing a more complete statistical picture that has relevance to many biological questions [6]...

  16. Scheduling algorithm for flow shop with two batch-processing machines and arbitrary job sizes

    NASA Astrophysics Data System (ADS)

    Cheng, Bayi; Yang, Shanlin; Hu, Xiaoxuan; Li, Kai

    2014-03-01

    This article considers the problem of scheduling two batch-processing machines in flow shop where the jobs have arbitrary sizes and the machines have limited capacity. The jobs are processed in batches and the total size of jobs in each batch cannot exceed the machine capacity. Once a batch is being processed, no interruption is allowed until all the jobs in it are completed. The problem of minimising makespan is NP-hard in the strong sense. First, we present a mathematical model of the problem using integer programme. We show the scale of feasible solutions of the problem and provide optimality properties. Then, we propose a polynomial time algorithm with running time in O(nlogn). The jobs are first assigned in feasible batches and then scheduled on machines. For the general case, we prove that the proposed algorithm has a performance guarantee of 4. For the special case where the processing times of each job on the two machines satisfy p 1 j = ap 2 j , the performance guarantee is ? for a > 0.

  17. Hardware Index to Permutation Converter

    DTIC Science & Technology

    2012-05-01

    Hardware Index to Permutation Converter J. T. Butler T. Sasao Department of Electrical and Computer Engineering Department of Computer Science...generates a permutation in response to an index. Since there are n! n-element permutations , the index ranges from 0 to n! − 1. Such a circuit is needed...in the hardware implementation of unique- permutation hash functions to specify how parallel machines interact through a shared memory. Such a circuit

  18. Asymptotic analysis of SPTA-based algorithms for no-wait flow shop scheduling problem with release dates.

    PubMed

    Ren, Tao; Zhang, Chuan; Lin, Lin; Guo, Meiting; Xie, Xionghang

    2014-01-01

    We address the scheduling problem for a no-wait flow shop to optimize total completion time with release dates. With the tool of asymptotic analysis, we prove that the objective values of two SPTA-based algorithms converge to the optimal value for sufficiently large-sized problems. To further enhance the performance of the SPTA-based algorithms, an improvement scheme based on local search is provided for moderate scale problems. New lower bound is presented for evaluating the asymptotic optimality of the algorithms. Numerical simulations demonstrate the effectiveness of the proposed algorithms.

  19. Tetrachoric Correlation: A Permutation Alternative

    ERIC Educational Resources Information Center

    Long, Michael A.; Berry, Kenneth J.; Mielke, Paul W., Jr.

    2009-01-01

    An exact permutation test is provided for the tetrachoric correlation coefficient. Comparisons with the conventional test employing Student's t distribution demonstrate the necessity of using the permutation approach for small sample sizes and/or disproportionate marginal frequency totals. (Contains 4 tables.)

  20. Stochastic flow shop scheduling of overlapping jobs on tandem machines in application to optimizing the US Army's deliberate nuclear, biological, and chemical decontamination process, (final report). Master's thesis

    SciTech Connect

    Novikov, V.

    1991-05-01

    The U.S. Army's detailed equipment decontamination process is a stochastic flow shop which has N independent non-identical jobs (vehicles) which have overlapping processing times. This flow shop consists of up to six non-identical machines (stations). With the exception of one station, the processing times of the jobs are random variables. Based on an analysis of the processing times, the jobs for the 56 Army heavy division companies were scheduled according to the best shortest expected processing time - longest expected processing time (SEPT-LEPT) sequence. To assist in this scheduling the Gap Comparison Heuristic was developed to select the best SEPT-LEPT schedule. This schedule was then used in balancing the detailed equipment decon line in order to find the best possible site configuration subject to several constraints. The detailed troop decon line, in which all jobs are independent and identically distributed, was then balanced. Lastly, an NBC decon optimization computer program was developed using the scheduling and line balancing results. This program serves as a prototype module for the ANBACIS automated NBC decision support system.... Decontamination, Stochastic flow shop, Scheduling, Stochastic scheduling, Minimization of the makespan, SEPT-LEPT Sequences, Flow shop line balancing, ANBACIS.

  1. An effective shuffled frog-leaping algorithm for solving the hybrid flow-shop scheduling problem with identical parallel machines

    NASA Astrophysics Data System (ADS)

    Xu, Ye; Wang, Ling; Wang, Shengyao; Liu, Min

    2013-12-01

    In this article, an effective shuffled frog-leaping algorithm (SFLA) is proposed to solve the hybrid flow-shop scheduling problem with identical parallel machines (HFSP-IPM). First, some novel heuristic decoding rules for both job order decision and machine assignment are proposed. Then, three hybrid decoding schemes are designed to decode job order sequences to schedules. A special bi-level crossover and multiple local search operators are incorporated in the searching framework of the SFLA to enrich the memetic searching behaviour and to balance the exploration and exploitation capabilities. Meanwhile, some theoretical analysis for the local search operators is provided for guiding the local search. The parameter setting of the algorithm is also investigated based on the Taguchi method of design of experiments. Finally, numerical testing based on well-known benchmarks and comparisons with some existing algorithms are carried out to demonstrate the effectiveness of the proposed algorithm.

  2. Asymptotic analysis of online algorithms and improved scheme for the flow shop scheduling problem with release dates

    NASA Astrophysics Data System (ADS)

    Bai, Danyu

    2015-08-01

    This paper discusses the flow shop scheduling problem to minimise the total quadratic completion time (TQCT) with release dates in offline and online environments. For this NP-hard problem, the investigation is focused on the performance of two online algorithms based on the Shortest Processing Time among Available jobs rule. Theoretical results indicate the asymptotic optimality of the algorithms as the problem scale is sufficiently large. To further enhance the quality of the original solutions, the improvement scheme is provided for these algorithms. A new lower bound with performance guarantee is provided, and computational experiments show the effectiveness of these heuristics. Moreover, several results of the single-machine TQCT problem with release dates are also obtained for the deduction of the main theorem.

  3. Permutations and time series analysis.

    PubMed

    Cánovas, Jose S; Guillamón, Antonio

    2009-12-01

    The main aim of this paper is to show how the use of permutations can be useful in the study of time series analysis. In particular, we introduce a test for checking the independence of a time series which is based on the number of admissible permutations on it. The main improvement in our tests is that we are able to give a theoretical distribution for independent time series.

  4. Novel permutation measures for image encryption algorithms

    NASA Astrophysics Data System (ADS)

    Abd-El-Hafiz, Salwa K.; AbdElHaleem, Sherif H.; Radwan, Ahmed G.

    2016-10-01

    This paper proposes two measures for the evaluation of permutation techniques used in image encryption. First, a general mathematical framework for describing the permutation phase used in image encryption is presented. Using this framework, six different permutation techniques, based on chaotic and non-chaotic generators, are described. The two new measures are, then, introduced to evaluate the effectiveness of permutation techniques. These measures are (1) Percentage of Adjacent Pixels Count (PAPC) and (2) Distance Between Adjacent Pixels (DBAP). The proposed measures are used to evaluate and compare the six permutation techniques in different scenarios. The permutation techniques are applied on several standard images and the resulting scrambled images are analyzed. Moreover, the new measures are used to compare the permutation algorithms on different matrix sizes irrespective of the actual parameters used in each algorithm. The analysis results show that the proposed measures are good indicators of the effectiveness of the permutation technique.

  5. Healthy grocery shopping

    MedlinePlus

    ... medlineplus.gov/ency/patientinstructions/000336.htm Healthy grocery shopping To use the sharing features on this page, ... a conscious decision about eating that food. Smart Shopping Avoid buying snack foods in bulk and shopping ...

  6. 14. Interior, Machine Shop, Roundhouse Machine Shop Extension, Southern Pacific ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    14. Interior, Machine Shop, Roundhouse Machine Shop Extension, Southern Pacific Railroad Carlin Shops, view to north (90mm lens). - Southern Pacific Railroad, Carlin Shops, Roundhouse Machine Shop Extension, Foot of Sixth Street, Carlin, Elko County, NV

  7. Circular permutant GFP insertion folding reporters

    SciTech Connect

    Waldo, Geoffrey S.; Cabantous, Stephanie

    2013-04-16

    Provided are methods of assaying and improving protein folding using circular permutants of fluorescent proteins, including circular permutants of GFP variants and combinations thereof. The invention further provides various nucleic acid molecules and vectors incorporating such nucleic acid molecules, comprising polynucleotides encoding fluorescent protein circular permutants derived from superfolder GFP, which polynucleotides include an internal cloning site into which a heterologous polynucleotide may be inserted in-frame with the circular permutant coding sequence, and which when expressed are capable of reporting on the degree to which a polypeptide encoded by such an inserted heterologous polynucleotide is correctly folded by correlation with the degree of fluorescence exhibited.

  8. Circular permutant GFP insertion folding reporters

    DOEpatents

    Waldo, Geoffrey S.; Cabantous, Stephanie

    2008-06-24

    Provided are methods of assaying and improving protein folding using circular permutants of fluorescent proteins, including circular permutants of GFP variants and combinations thereof. The invention further provides various nucleic acid molecules and vectors incorporating such nucleic acid molecules, comprising polynucleotides encoding fluorescent protein circular permutants derived from superfolder GFP, which polynucleotides include an internal cloning site into which a heterologous polynucleotide may be inserted in-frame with the circular permutant coding sequence, and which when expressed are capable of reporting on the degree to which a polypeptide encoded by such an inserted heterologous polynucleotide is correctly folded by correlation with the degree of fluorescence exhibited.

  9. Circular permutant GFP insertion folding reporters

    DOEpatents

    Waldo, Geoffrey S; Cabantous, Stephanie

    2013-02-12

    Provided are methods of assaying and improving protein folding using circular permutants of fluorescent proteins, including circular permutants of GFP variants and combinations thereof. The invention further provides various nucleic acid molecules and vectors incorporating such nucleic acid molecules, comprising polynucleotides encoding fluorescent protein circular permutants derived from superfolder GFP, which polynucleotides include an internal cloning site into which a heterologous polynucleotide may be inserted in-frame with the circular permutant coding sequence, and which when expressed are capable of reporting on the degree to which a polypeptide encoded by such an inserted heterologous polynucleotide is correctly folded by correlation with the degree of fluorescence exhibited.

  10. Circular permutant GFP insertion folding reporters

    DOEpatents

    Waldo, Geoffrey S.; Cabantous, Stephanie

    2011-06-14

    Provided are methods of assaying and improving protein folding using circular permutants of fluorescent proteins, including circular permutants of GFP variants and combinations thereof. The invention further provides various nucleic acid molecules and vectors incorporating such nucleic acid molecules, comprising polynucleotides encoding fluorescent protein circular permutants derived from superfolder GFP, which polynucleotides include an internal cloning site into which a heterologous polynucleotide may be inserted in-frame with the circular permutant coding sequence, and which when expressed are capable of reporting on the degree to which a polypeptide encoded by such an inserted heterologous polynucleotide is correctly folded by correlation with the degree of fluorescence exhibited.

  11. Permutation symmetry for theta functions

    SciTech Connect

    Carlson, B.C.

    2011-01-21

    This paper does for combinations of theta functions most of what Carlson (2004) [1] did for Jacobian elliptic functions. In each case the starting point is the symmetric elliptic integral R{sub F} of the first kind. Its three arguments (formerly squared Jacobian elliptic functions but now squared combinations of theta functions) differ by constants. Symbols designating the constants can often be used to replace 12 equations by three with permutation symmetry (formerly in the letters c, d, n for the Jacobian case but now in the subscripts 2, 3, 4 for theta functions). Such equations include derivatives and differential equations, bisection and duplication relations, addition formulas (apparently new for theta functions), and an example of pseudoaddition formulas.

  12. AUTOMOTIVE REPAIR SHOP, INTERIOR VIEW TO SOUTHEAST, DOORWAYS TO SHOP ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    AUTOMOTIVE REPAIR SHOP, INTERIOR VIEW TO SOUTHEAST, DOORWAYS TO SHOP OFFICE AND SOUTH WING, WITH SCALE. - Cedar City Automotive Repair Shop, Automotive Repair Shop, 820 North Main Street, Cedar City, Iron County, UT

  13. AUTOMOTIVE REPAIR SHOP, INTERIOR VIEW TO SOUTHEAST, DOORWAYS TO SHOP ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    AUTOMOTIVE REPAIR SHOP, INTERIOR VIEW TO SOUTHEAST, DOORWAYS TO SHOP OFFICE AND SOUTH WING. - Cedar City Automotive Repair Shop, Automotive Repair Shop, 820 North Main Street, Cedar City, Iron County, UT

  14. 16. Interior, Machine Shop, Roundhouse Machine Shop Extension, Southern Pacific ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    16. Interior, Machine Shop, Roundhouse Machine Shop Extension, Southern Pacific Railroad Carlin Shops, view to south (90mm lens). Note the large segmental-arched doorway to move locomotives in and out of Machine Shop. - Southern Pacific Railroad, Carlin Shops, Roundhouse Machine Shop Extension, Foot of Sixth Street, Carlin, Elko County, NV

  15. Permutation parity machines for neural cryptography

    SciTech Connect

    Reyes, Oscar Mauricio; Zimmermann, Karl-Heinz

    2010-06-15

    Recently, synchronization was proved for permutation parity machines, multilayer feed-forward neural networks proposed as a binary variant of the tree parity machines. This ability was already used in the case of tree parity machines to introduce a key-exchange protocol. In this paper, a protocol based on permutation parity machines is proposed and its performance against common attacks (simple, geometric, majority and genetic) is studied.

  16. Permutation parity machines for neural cryptography.

    PubMed

    Reyes, Oscar Mauricio; Zimmermann, Karl-Heinz

    2010-06-01

    Recently, synchronization was proved for permutation parity machines, multilayer feed-forward neural networks proposed as a binary variant of the tree parity machines. This ability was already used in the case of tree parity machines to introduce a key-exchange protocol. In this paper, a protocol based on permutation parity machines is proposed and its performance against common attacks (simple, geometric, majority and genetic) is studied.

  17. Permutation parity machines for neural cryptography

    NASA Astrophysics Data System (ADS)

    Reyes, Oscar Mauricio; Zimmermann, Karl-Heinz

    2010-06-01

    Recently, synchronization was proved for permutation parity machines, multilayer feed-forward neural networks proposed as a binary variant of the tree parity machines. This ability was already used in the case of tree parity machines to introduce a key-exchange protocol. In this paper, a protocol based on permutation parity machines is proposed and its performance against common attacks (simple, geometric, majority and genetic) is studied.

  18. Blocks in cycles and k-commuting permutations.

    PubMed

    Moreno, Rutilo; Rivera, Luis Manuel

    2016-01-01

    We introduce and study k-commuting permutations. One of our main results is a characterization of permutations that k-commute with a given permutation. Using this characterization, we obtain formulas for the number of permutations that k-commute with a permutation [Formula: see text], for some cycle types of [Formula: see text]. Our enumerative results are related with integer sequences in "The On-line Encyclopedia of Integer Sequences", and in some cases provide new interpretations for such sequences.

  19. Permutation inference for the general linear model

    PubMed Central

    Winkler, Anderson M.; Ridgway, Gerard R.; Webster, Matthew A.; Smith, Stephen M.; Nichols, Thomas E.

    2014-01-01

    Permutation methods can provide exact control of false positives and allow the use of non-standard statistics, making only weak assumptions about the data. With the availability of fast and inexpensive computing, their main limitation would be some lack of flexibility to work with arbitrary experimental designs. In this paper we report on results on approximate permutation methods that are more flexible with respect to the experimental design and nuisance variables, and conduct detailed simulations to identify the best method for settings that are typical for imaging research scenarios. We present a generic framework for permutation inference for complex general linear models (glms) when the errors are exchangeable and/or have a symmetric distribution, and show that, even in the presence of nuisance effects, these permutation inferences are powerful while providing excellent control of false positives in a wide range of common and relevant imaging research scenarios. We also demonstrate how the inference on glm parameters, originally intended for independent data, can be used in certain special but useful cases in which independence is violated. Detailed examples of common neuroimaging applications are provided, as well as a complete algorithm – the “randomise” algorithm – for permutation inference with the glm. PMID:24530839

  20. A hybrid job-shop scheduling system

    NASA Technical Reports Server (NTRS)

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

    1992-01-01

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

  1. 6. NORTH END OF MACHINE SHOP. FORGE SHOP (HAER No. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. NORTH END OF MACHINE SHOP. FORGE SHOP (HAER No. CA-326-K) ON LEFT, FORD PLANT IN DISTANCE, NE BY 60. - Rosie the Riveter National Historical Park, Machine Shop, 1311 Canal Boulevard, Richmond, Contra Costa County, CA

  2. Section Looking North, Blacksmith Shop; South Elevation, Blacksmith Shop ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Section Looking North, Blacksmith Shop; South Elevation, Blacksmith Shop - Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, Bounded by West Broad, Jones, West Boundary & Hull Streets, Savannah, Chatham County, GA

  3. Erection Shop, west elevation (left) and Boiler & Tank Shop, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Erection Shop, west elevation (left) and Boiler & Tank Shop, east and north elevations (right). - Pittsburgh & Lake Erie Railroad, Locomotive Repair Shops, River Road at Chartiers Avenue, McKees Rocks, Allegheny County, PA

  4. Technicians and Shop Owners

    EPA Pesticide Factsheets

    Overview page provides information for shops and technicians that repair or service motor vehicle air-conditioning systems, including information on proper training, approved equipment, and regulatory practices.

  5. Eyes wide shopped: shopping situations trigger arousal in impulsive buyers.

    PubMed

    Serfas, Benjamin G; Büttner, Oliver B; Florack, Arnd

    2014-01-01

    The present study proposes arousal as an important mechanism driving buying impulsiveness. We examined the effect of buying impulsiveness on arousal in non-shopping and shopping contexts. In an eye-tracking experiment, we measured pupil dilation while participants viewed and rated pictures of shopping scenes and non-shopping scenes. The results demonstrated that buying impulsiveness is closely associated with arousal as response to viewing pictures of shopping scenes. This pertained for hedonic shopping situations as well as for utilitarian shopping situations. Importantly, the effect did not emerge for non-shopping scenes. Furthermore, we demonstrated that arousal of impulsive buyers is independent from cognitive evaluation of scenes in the pictures.

  6. Flavour singlets in gauge theory as permutations

    NASA Astrophysics Data System (ADS)

    Kimura, Yusuke; Ramgoolam, Sanjaye; Suzuki, Ryo

    2016-12-01

    Gauge-invariant operators can be specified by equivalence classes of permutations. We develop this idea concretely for the singlets of the flavour group SO( N f ) in U( N c ) gauge theory by using Gelfand pairs and Schur-Weyl duality. The singlet operators, when specialised at N f = 6, belong to the scalar sector of N=4 SYM. A simple formula is given for the two-point functions in the free field limit of g Y M 2 = 0. The free two-point functions are shown to be equal to the partition function on a 2-complex with boundaries and a defect, in a topological field theory of permutations. The permutation equivalence classes are Fourier transformed to a representation basis which is orthogonal for the two-point functions at finite N c , N f . Counting formulae for the gauge-invariant operators are described. The one-loop mixing matrix is derived as a linear operator on the permutation equivalence classes.

  7. Demonstration of quantum permutation algorithm with a single photon ququart.

    PubMed

    Wang, Feiran; Wang, Yunlong; Liu, Ruifeng; Chen, Dongxu; Zhang, Pei; Gao, Hong; Li, Fuli

    2015-06-05

    We report an experiment to demonstrate a quantum permutation determining algorithm with linear optical system. By employing photon's polarization and spatial mode, we realize the quantum ququart states and all the essential permutation transformations. The quantum permutation determining algorithm displays the speedup of quantum algorithm by determining the parity of the permutation in only one step of evaluation compared with two for classical algorithm. This experiment is accomplished in single photon level and the method exhibits universality in high-dimensional quantum computation.

  8. The organization of permutation architectures with bussed interconnections

    NASA Astrophysics Data System (ADS)

    Kilian, Joe; Kipnis, Sholomo; Leiserson, Charles E.

    1989-01-01

    The problem of efficiently permuting data stored in VLSI chips is explored in accordance with a predetermined set of permutations. By connecting chips with shared bus interconnections, as opposed to point-to-point interconnections, it is shown that the number of pins per chip can often be reduced. Uniform permutation architectures were also considered that realize permutations in several clock ticks, instead of one, and show that further savings in the number of pins per chip can be obtained.

  9. The organization of permutation architectures with bused interconnections

    NASA Astrophysics Data System (ADS)

    Kilian, Joe; Kipnis, Shlomo; Leiserson, Charles E.

    1990-11-01

    The problem of efficiently permuting data stored in VLSI chips is explored, in accordance with a predetermined set of permutations. By connecting chips with shared bus interconnections, as opposed to point-to-point interconnections, it is shown that the number of pins per chip can often be reduced. Uniform permutation architectures are also considered that realize permutations in several clock ticks, instead of one, and it is demonstrated that further savings in the number of pins per chip can be obtained.

  10. Permutation-invariant codes encoding more than one qubit

    NASA Astrophysics Data System (ADS)

    Ouyang, Yingkai; Fitzsimons, Joseph

    2016-04-01

    A permutation-invariant code on m qubits is a subspace of the symmetric subspace of the m qubits. We derive permutation-invariant codes that can encode an increasing amount of quantum information while suppressing leading-order spontaneous decay errors. To prove the result, we use elementary number theory with prior theory on permutation-invariant codes and quantum error correction.

  11. Neighbourhood generation mechanism applied in simulated annealing to job shop scheduling problems

    NASA Astrophysics Data System (ADS)

    Cruz-Chávez, Marco Antonio

    2015-11-01

    This paper presents a neighbourhood generation mechanism for the job shop scheduling problems (JSSPs). In order to obtain a feasible neighbour with the generation mechanism, it is only necessary to generate a permutation of an adjacent pair of operations in a scheduling of the JSSP. If there is no slack time between the adjacent pair of operations that is permuted, then it is proven, through theory and experimentation, that the new neighbour (schedule) generated is feasible. It is demonstrated that the neighbourhood generation mechanism is very efficient and effective in a simulated annealing.

  12. 20. MACHINE SHOP, LOOKING SOUTH. SHOP IS EQUIPPED WITH A ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    20. MACHINE SHOP, LOOKING SOUTH. SHOP IS EQUIPPED WITH A 25-TON SHAW CRANE TO HANDLE PARTS FROM RAIL CARS INTO THE SHOP. MACHINE SHOP HANDLES ALL NECESSARY REPAIR WORK ON THE DOCK MACHINERY. - Pennsylvania Railway Ore Dock, Lake Erie at Whiskey Island, approximately 1.5 miles west of Public Square, Cleveland, Cuyahoga County, OH

  13. Mercury Shopping Cart Interface

    NASA Technical Reports Server (NTRS)

    Pfister, Robin; McMahon, Joe

    2006-01-01

    Mercury Shopping Cart Interface (MSCI) is a reusable component of the Power User Interface 5.0 (PUI) program described in another article. MSCI is a means of encapsulating the logic and information needed to describe an orderable item consistent with Mercury Shopping Cart service protocol. Designed to be used with Web-browser software, MSCI generates Hypertext Markup Language (HTML) pages on which ordering information can be entered. MSCI comprises two types of Practical Extraction and Report Language (PERL) modules: template modules and shopping-cart logic modules. Template modules generate HTML pages for entering the required ordering details and enable submission of the order via a Hypertext Transfer Protocol (HTTP) post. Shopping cart modules encapsulate the logic and data needed to describe an individual orderable item to the Mercury Shopping Cart service. These modules evaluate information entered by the user to determine whether it is sufficient for the Shopping Cart service to process the order. Once an order has been passed from MSCI to a deployed Mercury Shopping Cart server, there is no further interaction with the user.

  14. Inference for Distributions over the Permutation Group

    DTIC Science & Technology

    2008-05-01

    studied distributions over permu-tations/rankings ( Mallows , 1957; Crit hlow, 1985; Fligner & Verdu i, 1986;Taylor et al., 2008; Lebanon & Mao, 2008...on distan e based models. For ex-ample, the Mallows model ( Mallows , 1957) denes a Gaussian-like distributionover permutations as: P (σ; c, σ0) ∝ exp...partially ranked) data based onpla ing weighted Mallows kernels on top of training examples, whi h, as theyshow, an realize a far ri her lass of

  15. 15. Interior, Machine Shop, Roundhouse Machine Shop Extension, Southern Pacific ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    15. Interior, Machine Shop, Roundhouse Machine Shop Extension, Southern Pacific Railroad Carlin Shops, view to northeast (90mm lens). The arched cutouts in the bottom chords of the roof trusses were necessary to provide clearance for the smokestacks of steam locomotives, and also mark the location of the former inspection pit in the floor (now filled in and covered by a new concrete floor). - Southern Pacific Railroad, Carlin Shops, Roundhouse Machine Shop Extension, Foot of Sixth Street, Carlin, Elko County, NV

  16. Online shopping hesitation.

    PubMed

    Cho, Chang-Hoan; Kang, Jaewon; Cheon, Hongsik John

    2006-06-01

    This study was designed to understand which factors influence consumer hesitation or delay in online product purchases. The study examined four groups of variables (i.e., consumer characteristics, contextual factors perceived uncertainty factors, and medium/channel innovation factors) that predict three types of online shopping hesitation (i.e., overall hesitation, shopping cart abandonment, and hesitation at the final payment stage). We found that different sets of delay factors are related to different aspects of online shopping hesitation. The study concludes with suggestion for various delay-reduction devices to help consumers close their online decision hesitation.

  17. Remodeling A School Shop?

    ERIC Educational Resources Information Center

    Baker, G. E.

    1970-01-01

    Presents guidelines for remodeling a school shop combining major considerations of funds, program changes, class management, and flexibility, with the needs of wiring, painting, and placement of equipment. (Author)

  18. Space Odyssey Gift Shop

    NASA Technical Reports Server (NTRS)

    2000-01-01

    The Space Odyssey Gift Shop located in StenniSphere at the John C. Stennis Space Center in Hancock County, Miss., offers every visitor the opportunity to go home with 'the right stuff' from his or her StenniSphere visit. The gift shop is located just inside the front doors to StenniSphere and offers a wide range of space-related apparel, memorabilia, toys, books, mission patches and more.

  19. Genome Reshuffling for Advanced Intercross Permutation (GRAIP): Simulation and permutation for advanced intercross population analysis

    SciTech Connect

    Pierce, Jeremy; Broman, Karl; Lu, Lu; Chesler, Elissa J; Zhou, Guomin; Airey, David; Birmingham, Amanda; Williams, Robert

    2008-04-01

    Background: Advanced intercross lines (AIL) are segregating populations created using a multi-generation breeding protocol for fine mapping complex trait loci (QTL) in mice and other organisms. Applying QTL mapping methods for intercross and backcross populations, often followed by na ve permutation of individuals and phenotypes, does not account for the effect of AIL family structure in which final generations have been expanded and leads to inappropriately low significance thresholds. The critical problem with na ve mapping approaches in AIL populations is that the individual is not an exchangeable unit. Methodology/Principal Findings: The effect of family structure has immediate implications for the optimal AIL creation (many crosses, few animals per cross, and population expansion before the final generation) and we discuss these and the utility of AIL populations for QTL fine mapping. We also describe Genome Reshuffling for Advanced Intercross Permutation, (GRAIP) a method for analyzing AIL data that accounts for family structure. GRAIP permutes a more interchangeable unit in the final generation crosses - the parental genome - and simulating regeneration of a permuted AIL population based on exchanged parental identities. GRAIP determines appropriate genome-wide significance thresholds and locus-specific Pvalues for AILs and other populations with similar family structures. We contrast GRAIP with na ve permutation using a large densely genotyped mouse AIL population (1333 individuals from 32 crosses). A na ve permutation using coat color as a model phenotype demonstrates high false-positive locus identification and uncertain significance levels, which are corrected using GRAIP. GRAIP also detects an established hippocampus weight locus and a new locus, Hipp9a. Conclusions and Significance: GRAIP determines appropriate genome-wide significance thresholds and locus-specific Pvalues for AILs and other populations with similar family structures. The effect of

  20. Weight distributions for turbo codes using random and nonrandom permutations

    NASA Technical Reports Server (NTRS)

    Dolinar, S.; Divsalar, D.

    1995-01-01

    This article takes a preliminary look at the weight distributions achievable for turbo codes using random, nonrandom, and semirandom permutations. Due to the recursiveness of the encoders, it is important to distinguish between self-terminating and non-self-terminating input sequences. The non-self-terminating sequences have little effect on decoder performance, because they accumulate high encoded weight until they are artificially terminated at the end of the block. From probabilistic arguments based on selecting the permutations randomly, it is concluded that the self-terminating weight-2 data sequences are the most important consideration in the design of constituent codes; higher-weight self-terminating sequences have successively decreasing importance. Also, increasing the number of codes and, correspondingly, the number of permutations makes it more and more likely that the bad input sequences will be broken up by one or more of the permuters. It is possible to design nonrandom permutations that ensure that the minimum distance due to weight-2 input sequences grows roughly as the square root of (2N), where N is the block length. However, these nonrandom permutations amplify the bad effects of higher-weight inputs, and as a result they are inferior in performance to randomly selected permutations. But there are 'semirandom' permutations that perform nearly as well as the designed nonrandom permutations with respect to weight-2 input sequences and are not as susceptible to being foiled by higher-weight inputs.

  1. 158. BLACKSMITH SHOP, DRIVE SHAFT FOR BLACKSMITH AND WOOD SHOPS. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    158. BLACKSMITH SHOP, DRIVE SHAFT FOR BLACKSMITH AND WOOD SHOPS. BELT ON RIGHT POWERS GRUBER BUILT BELT SANDER. - Gruber Wagon Works, Pennsylvania Route 183 & State Hill Road at Red Bridge Park, Bernville, Berks County, PA

  2. 42. MACHINE SHOP Machine shop area with small parts bins ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    42. MACHINE SHOP Machine shop area with small parts bins on the right and pipe storage racks on the left. Remains of the power drive system are suspended from the ceiling. - Hovden Cannery, 886 Cannery Row, Monterey, Monterey County, CA

  3. Overall interior view of structures shop (11 shop) located on ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Overall interior view of structures shop (11 shop) located on west side of building 57 - looking north; the south end of the structures shop was devoted to welding heavy plate foundations and ship components; the floor is fabricated of case steel and features a grillwork of 1 1/2 fabricated holes which are used as sockets for gripping position pins. - Naval Base Philadelphia-Philadelphia Naval Shipyard, Structure Shop, League Island, Philadelphia, Philadelphia County, PA

  4. Permutation-invariant distance between atomic configurations

    SciTech Connect

    Ferré, Grégoire; Maillet, Jean-Bernard; Stoltz, Gabriel

    2015-09-14

    We present a permutation-invariant distance between atomic configurations, defined through a functional representation of atomic positions. This distance enables us to directly compare different atomic environments with an arbitrary number of particles, without going through a space of reduced dimensionality (i.e., fingerprints) as an intermediate step. Moreover, this distance is naturally invariant through permutations of atoms, avoiding the time consuming associated minimization required by other common criteria (like the root mean square distance). Finally, the invariance through global rotations is accounted for by a minimization procedure in the space of rotations solved by Monte Carlo simulated annealing. A formal framework is also introduced, showing that the distance we propose verifies the property of a metric on the space of atomic configurations. Two examples of applications are proposed. The first one consists in evaluating faithfulness of some fingerprints (or descriptors), i.e., their capacity to represent the structural information of a configuration. The second application concerns structural analysis, where our distance proves to be efficient in discriminating different local structures and even classifying their degree of similarity.

  5. VIEW SOUTHCENTERBUILDING 61 CARPENTER SHOP (1911) RIGHTBUILDING 32 MACHINE SHOP ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW SOUTH-CENTER-BUILDING 61 CARPENTER SHOP (1911) RIGHT-BUILDING 32 MACHINE SHOP (1890) LEFT-BUILDING 42 ROPE SHOP (1910) - John A. Roebling's Sons Company & American Steel & Wire Company, South Broad, Clark, Elmer, Mott & Hudson Streets, Trenton, Mercer County, NJ

  6. View north of inside machine shop 36; shop floor accommodates ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View north of inside machine shop 36; shop floor accommodates lathes capable of machining a cylinder 60 inches in diameter and 75 feet long; other equipment includes horizontal and vertical jig borders, hydraulic tube straighteners and other equipment for precision machining of large ship components. - Naval Base Philadelphia-Philadelphia Naval Shipyard, Structure Shop, League Island, Philadelphia, Philadelphia County, PA

  7. 5. Machine shop and air brake shop sections of roundhouse ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. Machine shop and air brake shop sections of roundhouse in background. Foundry (MN-99-B) in foreground. View to south. - Duluth & Iron Range Rail Road Company Shops, Roundhouse, Southwest of downtown Two Harbors, northwest of Agate Bay, Two Harbors, Lake County, MN

  8. Interior of girder shop, from older section of shop showing ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Interior of girder shop, from older section of shop showing older (1880's) construction of roof trusses. Compare with earlier views in this series. - Phoenix Iron Company, Girder Shop No. 6, North of French Creek, west of Gay Street, Phoenixville, Chester County, PA

  9. Genome Reshuffling for Advanced Intercross Permutation (GRAIP): Simulation and permutation for advanced intercross population analysis

    SciTech Connect

    Pierce, Jeremy; Broman, Karl; Chesler, Elissa J; Zhou, Guomin; Airey, David; Birmingham, Amanda; Williams, Robert

    2008-01-01

    Abstract Background Advanced intercross lines (AIL) are segregating populations created using a multigeneration breeding protocol for fine mapping complex traits in mice and other organisms. Applying quantitative trait locus (QTL) mapping methods for intercross and backcross populations, often followed by na ve permutation of individuals and phenotypes, does not account for the effect of family structure in AIL populations in which final generations have been expanded and leads to inappropriately low significance thresholds. The critical problem with a na ve mapping approach in such AIL populations is that the individual is not an exchangeable unit given the family structure. Methodology/Principal Findings The effect of family structure has immediate implications for the optimal AIL creation (many crosses, few animals per cross, and population expansion before the final generation) and we discuss these and the utility of AIL populations for QTL fine mapping. We also describe Genome Reshuffling for Advanced Intercross Permutation, (GRAIP) a method for analyzing AIL data that accounts for family structure. RAIP permutes a more interchangeable unit in the final generation crosses - the parental genome - and simulating regeneration of a permuted AIL population based on exchanged parental identities. GRAIP determines appropriate genome- ide significance thresholds and locus-specific P-values for AILs and other populations with similar family structures. We contrast GRAIP with na ve permutation using a large densely genotyped mouse AIL population (1333 individuals from 32 crosses). A na ve permutation using coat color as a model phenotype demonstrates high false-positive locus identification and uncertain significance levels in our AIL population, which are corrected by use of GRAIP. We also show that GRAIP detects an established hippocampus weight locus and a new locus, Hipp9a. Conclusions and Significance GRAIP determines appropriate genome-wide significance thresholds

  10. Application of half butterfly method in listing permutation

    NASA Astrophysics Data System (ADS)

    Karim, Sharmila; Darus, Maizon Mohd; Ibrahim, Haslinda

    2016-10-01

    A Half Butterfly Method is a new method introduced to construct the distinct circuits in complete graphs where used the concept of isomorphism. The Half Butterfly Method can be applied in the field of combinatorics such as in listing permutations of n elements. Thus, in this paper, we presented a permutation generation using Half Butterfly Method.

  11. A Fuzzy Permutation Method for False Discovery Rate Control.

    PubMed

    Yang, Ya-Hui; Lin, Wan-Yu; Lee, Wen-Chung

    2016-06-22

    Biomedical researchers often encounter the large-p-small-n situations-a great number of variables are measured/recorded for only a few subjects. The authors propose a fuzzy permutation method to address the multiple testing problem for small sample size studies. The method introduces fuzziness into standard permutation analysis to produce randomized p-values, which are then converted into q-values for false discovery rate controls. Simple algebra shows that the fuzzy permutation method is at least as powerful as the standard permutation method under any alternative. Monte-Carlo simulations show that the proposed method has desirable statistical properties whether the study variables are normally or non-normally distributed. A real dataset is analyzed to illustrate its use. The proposed fuzzy permutation method is recommended for use in the large-p-small-n settings.

  12. Machine Shop Grinding Machines.

    ERIC Educational Resources Information Center

    Dunn, James

    This curriculum manual is one in a series of machine shop curriculum manuals intended for use in full-time secondary and postsecondary classes, as well as part-time adult classes. The curriculum can also be adapted to open-entry, open-exit programs. Its purpose is to equip students with basic knowledge and skills that will enable them to enter the…

  13. The Mobile Costume Shop.

    ERIC Educational Resources Information Center

    Witherspoon, Cindy; Nelson, Steve

    1998-01-01

    Discusses the difficulties of costume construction for high school theater productions. Advances a plan (and provides a design) for a mobile costume shop which contains the basic needs of a functional costume facility, using only 60 square feet of space. Lists every element and implement needed. (PA)

  14. Discrete phase-space mappings, tomographic condition and permutation invariance

    NASA Astrophysics Data System (ADS)

    Muñoz, C.; Klimov, A. B.

    2017-04-01

    We analyze various families of discrete maps in N-qubit systems in the context of permutation invariance. We prove that the tomographic condition imposed on the self-dual (Wigner) map is incompatible with the requirement of the invariance under particle permutations (except for the two-qubit case), which makes it impossible to project the Wootters-like Wigner function into the space of symmetric measurements. We also provide several explicit forms of the self-dual mappings: (a) tomographic and (b) permutation invariant, and analyze the symmetric projection in the latter case.

  15. Multiscale permutation entropy analysis of electrocardiogram

    NASA Astrophysics Data System (ADS)

    Liu, Tiebing; Yao, Wenpo; Wu, Min; Shi, Zhaorong; Wang, Jun; Ning, Xinbao

    2017-04-01

    To make a comprehensive nonlinear analysis to ECG, multiscale permutation entropy (MPE) was applied to ECG characteristics extraction to make a comprehensive nonlinear analysis of ECG. Three kinds of ECG from PhysioNet database, congestive heart failure (CHF) patients, healthy young and elderly subjects, are applied in this paper. We set embedding dimension to 4 and adjust scale factor from 2 to 100 with a step size of 2, and compare MPE with multiscale entropy (MSE). As increase of scale factor, MPE complexity of the three ECG signals are showing first-decrease and last-increase trends. When scale factor is between 10 and 32, complexities of the three ECG had biggest difference, entropy of the elderly is 0.146 less than the CHF patients and 0.025 larger than the healthy young in average, in line with normal physiological characteristics. Test results showed that MPE can effectively apply in ECG nonlinear analysis, and can effectively distinguish different ECG signals.

  16. Optical brush: Imaging through permuted probes

    PubMed Central

    Heshmat, Barmak; Lee, Ik Hyun; Raskar, Ramesh

    2016-01-01

    The combination of computational techniques and ultrafast imaging have enabled sensing through unconventional settings such as around corners, and through diffusive media. We exploit time of flight (ToF) measurements to enable a flexible interface for imaging through permuted set of fibers. The fibers are randomly distributed in the scene and are packed on the camera end, thus making a brush-like structure. The scene is illuminated by two off-axis optical pulses. Temporal signatures of fiber tips in the scene are used to localize each fiber. Finally, by combining the position and measured intensity of each fiber, the original input is reconstructed. Unlike conventional fiber bundles with packed set of fibers that are limited by a narrow field of view (FOV), lack of flexibility, and extended coaxial precalibration, the proposed optical brush is flexible and uses off-axis calibration method based on ToF. The enabled brush form can couple to other types of ToF imaging systems. This can impact probe-based applications such as, endoscopy, tomography, and industrial imaging and sensing. PMID:26868954

  17. Differentiating Climatic Variability with Multi - Permutation Procedures

    NASA Astrophysics Data System (ADS)

    Law-Evans, Elizabeth

    It is hypothesized that a Multi-Response Permutation Procedure (MRPP) can be developed which can detect changes in natural time series. A companion hypothesis is that climatic and hydrologic changes have occurred in historical time in watersheds in Colorado and northern New Mexico. The non-parametric nature of MRPP precludes normality assumptions required by many techniques. The MRPP technique was applied to historical climatic and hydrologic time series (annual air temperature and snowfall; annual and monthly precipitation and streamflow). A variation of the MRPP technique was adapted, termed "moving-MRPP". The moving-MRPP marched the MRPP analyses through the series in a fashion similar to a moving average. The use of non-normal values brought about the greatest improvement between the results from the moving -MRPP technique with a distance exponent of one (v = 1) and the squared distance exponent (v = 2; used in "normal" or "classical" statistics such as standard deviation). Using moving-MRPP as an exploratory technique, seven meteorological and two streamflow sites in Colorado and New Mexico were studied. Analysis of the sites' historical records suggested region-wide changes in variability during the period of record which agreed with published dates and types of changes in hemispheric circulation regimes. Two changes in variability are especially noticeable: first, a period of low climatic variability from the early 1920s to the mid 1950s. Second, a period of highly variable conditions from the mid 1970s to 1986.

  18. Permutation centralizer algebras and multimatrix invariants

    NASA Astrophysics Data System (ADS)

    Mattioli, Paolo; Ramgoolam, Sanjaye

    2016-03-01

    We introduce a class of permutation centralizer algebras which underly the combinatorics of multimatrix gauge-invariant observables. One family of such noncommutative algebras is parametrized by two integers. Its Wedderburn-Artin decomposition explains the counting of restricted Schur operators, which were introduced in the physics literature to describe open strings attached to giant gravitons and were subsequently used to diagonalize the Gaussian inner product for gauge invariants of two-matrix models. The structure of the algebra, notably its dimension, its center and its maximally commuting subalgebra, is related to Littlewood-Richardson numbers for composing Young diagrams. It gives a precise characterization of the minimal set of charges needed to distinguish arbitrary matrix gauge invariants, which are related to enhanced symmetries in gauge theory. The algebra also gives a star product for matrix invariants. The center of the algebra allows efficient computation of a sector of multimatrix correlators. These generate the counting of a certain class of bicoloured ribbon graphs with arbitrary genus.

  19. Image encryption using a synchronous permutation-diffusion technique

    NASA Astrophysics Data System (ADS)

    Enayatifar, Rasul; Abdullah, Abdul Hanan; Isnin, Ismail Fauzi; Altameem, Ayman; Lee, Malrey

    2017-03-01

    In the past decade, the interest on digital images security has been increased among scientists. A synchronous permutation and diffusion technique is designed in order to protect gray-level image content while sending it through internet. To implement the proposed method, two-dimensional plain-image is converted to one dimension. Afterward, in order to reduce the sending process time, permutation and diffusion steps for any pixel are performed in the same time. The permutation step uses chaotic map and deoxyribonucleic acid (DNA) to permute a pixel, while diffusion employs DNA sequence and DNA operator to encrypt the pixel. Experimental results and extensive security analyses have been conducted to demonstrate the feasibility and validity of this proposed image encryption method.

  20. A Random Variable Related to the Inversion Vector of a Partial Random Permutation

    ERIC Educational Resources Information Center

    Laghate, Kavita; Deshpande, M. N.

    2005-01-01

    In this article, we define the inversion vector of a permutation of the integers 1, 2,..., n. We set up a particular kind of permutation, called a partial random permutation. The sum of the elements of the inversion vector of such a permutation is a random variable of interest.

  1. A hyper-chaos-based image encryption algorithm using pixel-level permutation and bit-level permutation

    NASA Astrophysics Data System (ADS)

    Li, Yueping; Wang, Chunhua; Chen, Hua

    2017-03-01

    Recently, a number of chaos-based image encryption algorithms that use low-dimensional chaotic map and permutation-diffusion architecture have been proposed. However, low-dimensional chaotic map is less safe than high-dimensional chaotic system. And permutation process is independent of plaintext and diffusion process. Therefore, they cannot resist efficiently the chosen-plaintext attack and chosen-ciphertext attack. In this paper, we propose a hyper-chaos-based image encryption algorithm. The algorithm adopts a 5-D multi-wing hyper-chaotic system, and the key stream generated by hyper-chaotic system is related to the original image. Then, pixel-level permutation and bit-level permutation are employed to strengthen security of the cryptosystem. Finally, a diffusion operation is employed to change pixels. Theoretical analysis and numerical simulations demonstrate that the proposed algorithm is secure and reliable for image encryption.

  2. Autobody Refinishing General Best Shop Practices

    EPA Pesticide Factsheets

    This document focuses on the key components of beneficial change in small auto refinish shops. Compiled from real-life shop experiences, the documents serve as worker protection and pollution prevention goals for the small shop.

  3. Differential Validities For Shop Courses.

    ERIC Educational Resources Information Center

    Lokan, Janice J.; Halpern, Gerald

    In a vocational high school in Ottawa, Canada, with an enrollment of approximately 750 students, 25 different shop courses are available. Students must take six shop courses during the first year, then specialize in two during the second year. During the first 2 years of operation, between two-thirds and three-fourths of those enrolled requested…

  4. AAFES Shopping Center Environmental Assessment

    DTIC Science & Technology

    2009-08-01

    AFB, Montana. February. _________. 2006c. Malmstrom Air Force Base Runoff Curve Numbers, Time of Concentration, Peak Discharge. Report Prepared...The existing Base Exchange was constructed in 1957 and the building suffers from dated design features that limit retail merchandising...proposes to construct a new Shopping Center at Malmstrom Air Force Base (AFB), Montana. The Shopping Center would feature retail and food

  5. Product Searching with Shopping Bots.

    ERIC Educational Resources Information Center

    Rowley, Jennifer

    2000-01-01

    Using trial searches for three best-selling books, this study examined the search facilities offered by shopping bots, which support consumers with the product search and identification stage in e-shopping. Findings indicate that effectiveness of bots not only depends upon search facilities but also upon product coverage, and other added value…

  6. 2. VIEW SOUTHWESTNORTH ELEVATION OF BOILER SHOP SECTION OF THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. VIEW SOUTHWEST-NORTH ELEVATION OF BOILER SHOP SECTION OF THE BETHLEHEM STEEL COMPANY SHIPYARD BLACKSMITH SHOP/BOILER SHOP. - Bethlehem Steel Company Shipyard, Blacksmith Shop-Boiler Shop, 1201-1321 Hudson Street, Hoboken, Hudson County, NJ

  7. 3. VIEW SOUTHNORTH ELEVATION OF BLACKSMITH SHOP SECTION OF THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. VIEW SOUTH-NORTH ELEVATION OF BLACKSMITH SHOP SECTION OF THE BETHLEHEM STEEL COMPANY SHIPYARD BLACKSMITH SHOP/BOILER SHOP. - Bethlehem Steel Company Shipyard, Blacksmith Shop-Boiler Shop, 1201-1321 Hudson Street, Hoboken, Hudson County, NJ

  8. 6. VIEW WESTINTERIOR OF BOILER SHOP SECTION OF THE BETHLEHEM ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. VIEW WEST-INTERIOR OF BOILER SHOP SECTION OF THE BETHLEHEM STEEL COMPANY SHIPYARD BLACKSMITH SHOP/BOILER SHOP. - Bethlehem Steel Company Shipyard, Blacksmith Shop-Boiler Shop, 1201-1321 Hudson Street, Hoboken, Hudson County, NJ

  9. 9. VIEW WESTINTERIOR OF BLACKSMITH SHOP SECTION OF THE BETHLEHEM ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. VIEW WEST-INTERIOR OF BLACKSMITH SHOP SECTION OF THE BETHLEHEM STEEL COMPANY SHIPYARD BLACKSMITH SHOP/BOILER SHOP. - Bethlehem Steel Company Shipyard, Blacksmith Shop-Boiler Shop, 1201-1321 Hudson Street, Hoboken, Hudson County, NJ

  10. 7. VIEW EASTINTERIOR OF BOILER SHOP SECTION OF THE BETHLEHEM ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. VIEW EAST-INTERIOR OF BOILER SHOP SECTION OF THE BETHLEHEM STEEL COMPANY SHIPYARD BLACKSMITH SHOP/BOILER SHOP. - Bethlehem Steel Company Shipyard, Blacksmith Shop-Boiler Shop, 1201-1321 Hudson Street, Hoboken, Hudson County, NJ

  11. 8. VIEW EASTINTERIOR OF BLACKSMITH SHOP SECTION OF THE BETHLEM ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. VIEW EAST-INTERIOR OF BLACKSMITH SHOP SECTION OF THE BETHLEM STEEL COMPANY SHIPYARD BLACKSMITH SHOP/BOILER SHOP. - Bethlehem Steel Company Shipyard, Blacksmith Shop-Boiler Shop, 1201-1321 Hudson Street, Hoboken, Hudson County, NJ

  12. Technical and Occupational Shops. Volume II.

    ERIC Educational Resources Information Center

    Ontario Dept. of Education, Toronto. School Planning and Building Research Section.

    The layouts and specifications provided are intended as a guide to school boards, educators, and architects. Drawings and room plans illustrate specifications for girls' occupational shop, graphic arts, carpentry (millwork and building construction shop), boys' occupational shop (mechanical), boys' occupational shop (building construction),…

  13. [Materia medica in apothecary shops].

    PubMed

    Hadzović, S; Masić, I

    1999-01-01

    Even in 15th and 16th century there were people in Bosnia, preparing medicaments and selling different kinds of medical herbs. At first, they were Jews, later Muslims. They were called "attars"--drugsellers. They were very familiar with herbs of medical purpose. They could recognize herb by its colour and outlook. The goods were sold in specialized shops--attar shop. When analysing Materia Medica from an attar shop--according to the list from the 1911 (dr. Moritz Levy: "Sefards in Bosnia"), we can conclude that assortment of medical herbs and some medicaments was correct. Some Galen forms used in that time, are still in use nowadays. This paper describes all materials encompassed by Materia Medica. They are classified as organic and non-organic materials, and their use in therapy was also emphasized. Materia Medica of attar shops gives us a lot of material for research of non-official medicine and pharmacy from that time.

  14. Process Waste Assessment - Paint Shop

    SciTech Connect

    Phillips, N.M.

    1993-06-01

    This Process Waste Assessment was conducted to evaluate hazardous wastes generated in the Paint Shop, Building 913, Room 130. Special attention is given to waste streams generated by the spray painting process because it requires a number of steps for preparing, priming, and painting an object. Also, the spray paint booth covers the largest area in R-130. The largest and most costly waste stream to dispose of is {open_quote}Paint Shop waste{close_quotes} -- a combination of paint cans, rags, sticks, filters, and paper containers. These items are compacted in 55-gallon drums and disposed of as solid hazardous waste. Recommendations are made for minimizing waste in the Paint Shop. Paint Shop personnel are very aware of the need to minimize hazardous wastes and are continuously looking for opportunities to do so.

  15. RIGGERS LOFT/PAINT SHOP/SHEET METAL SHOP, VIEW TO SOUTHEAST. THE PAINT ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    RIGGERS LOFT/PAINT SHOP/SHEET METAL SHOP, VIEW TO SOUTHEAST. THE PAINT SHOP WAS LOCATED IN THE CLOSEST CORNER OF THE BUILDING. THE SHEET METAL SHOP WAS LOCATED IN THE CORNER OF THE BUILDING ON THE RIGHT. THE RIGGERS LOFT WAS LOCATED IN THE PORTION OF THE BUILDING OUT OF VIEW TO THE LEFT - Rosie the Riveter National Historical Park, Riggers Loft/Paint Shop/Sheet Metal Shop, 1322 Canal Boulevard, Richmond, Contra Costa County, CA

  16. Introduction to Permutation and Resampling-Based Hypothesis Tests

    ERIC Educational Resources Information Center

    LaFleur, Bonnie J.; Greevy, Robert A.

    2009-01-01

    A resampling-based method of inference--permutation tests--is often used when distributional assumptions are questionable or unmet. Not only are these methods useful for obvious departures from parametric assumptions (e.g., normality) and small sample sizes, but they are also more robust than their parametric counterparts in the presences of…

  17. Quantitative in vivo solubility and reconstitution of truncated circular permutants of green fluorescent protein.

    PubMed

    Huang, Yao-Ming; Nayak, Sasmita; Bystroff, Christopher

    2011-11-01

    Several versions of split green fluorescent protein (GFP) fold and reconstitute fluorescence, as do many circular permutants, but little is known about the dependence of reconstitution on circular permutation. Explored here is the capacity of GFP to fold and reconstitute fluorescence from various truncated circular permutants, herein called "leave-one-outs" using a quantitative in vivo solubility assay and in vivo reconstitution of fluorescence. Twelve leave-one-out permutants are discussed, one for each of the 12 secondary structure elements. The results expand the outlook for the use of permuted split GFPs as specific and self-reporting gene encoded affinity reagents.

  18. Encoding sequential information in semantic space models: comparing holographic reduced representation and random permutation.

    PubMed

    Recchia, Gabriel; Sahlgren, Magnus; Kanerva, Pentti; Jones, Michael N

    2015-01-01

    Circular convolution and random permutation have each been proposed as neurally plausible binding operators capable of encoding sequential information in semantic memory. We perform several controlled comparisons of circular convolution and random permutation as means of encoding paired associates as well as encoding sequential information. Random permutations outperformed convolution with respect to the number of paired associates that can be reliably stored in a single memory trace. Performance was equal on semantic tasks when using a small corpus, but random permutations were ultimately capable of achieving superior performance due to their higher scalability to large corpora. Finally, "noisy" permutations in which units are mapped to other units arbitrarily (no one-to-one mapping) perform nearly as well as true permutations. These findings increase the neurological plausibility of random permutations and highlight their utility in vector space models of semantics.

  19. Finite state model and compatibility theory - New analysis tools for permutation networks

    NASA Technical Reports Server (NTRS)

    Huang, S.-T.; Tripathi, S. K.

    1986-01-01

    A simple model to describe the fundamental operation theory of shuffle-exchange-type permutation networks, the finite permutation machine (FPM), is described, and theorems which transform the control matrix result to a continuous compatible vector result are developed. It is found that only 2n-1 shuffle exchange passes are necessary, and that 3n-3 passes are sufficient, to realize all permutations, reducing the sufficient number of passes by two from previous results. The flexibility of the approach is demonstrated by the description of a stack permutation machine (SPM) which can realize all permutations, and by showing that the FPM corresponding to the Benes (1965) network belongs to the SPM. The FPM corresponding to the network with two cascaded reverse-exchange networks is found to realize all permutations, and a simple mechanism to verify several equivalence relationships of various permutation networks is discussed.

  20. Encoding Sequential Information in Semantic Space Models: Comparing Holographic Reduced Representation and Random Permutation

    PubMed Central

    Recchia, Gabriel; Sahlgren, Magnus; Kanerva, Pentti; Jones, Michael N.

    2015-01-01

    Circular convolution and random permutation have each been proposed as neurally plausible binding operators capable of encoding sequential information in semantic memory. We perform several controlled comparisons of circular convolution and random permutation as means of encoding paired associates as well as encoding sequential information. Random permutations outperformed convolution with respect to the number of paired associates that can be reliably stored in a single memory trace. Performance was equal on semantic tasks when using a small corpus, but random permutations were ultimately capable of achieving superior performance due to their higher scalability to large corpora. Finally, “noisy” permutations in which units are mapped to other units arbitrarily (no one-to-one mapping) perform nearly as well as true permutations. These findings increase the neurological plausibility of random permutations and highlight their utility in vector space models of semantics. PMID:25954306

  1. Retailing and Shopping on the Internet.

    ERIC Educational Resources Information Center

    Rowley, Jennifer

    1996-01-01

    Internet advertising and commercial activity are increasing. This article examines challenges facing the retail industry on the Internet: location; comparison shopping; security, especially financial transactions; customer base and profile; nature of the shopping experience; and legal and marketplace controls. (PEN)

  2. Smart Shopping for Veggies and Fruits

    MedlinePlus

    ... Newsroom Dietary Guidelines Communicator’s Guide 10 Tips: Smart Shopping for Veggies and Fruits You are here Home ... Veggies and Fruits Print Share 10 Tips: Smart Shopping for Veggies and Fruits It is possible to ...

  3. A Weak Quantum Blind Signature with Entanglement Permutation

    NASA Astrophysics Data System (ADS)

    Lou, Xiaoping; Chen, Zhigang; Guo, Ying

    2015-09-01

    Motivated by the permutation encryption algorithm, a weak quantum blind signature (QBS) scheme is proposed. It involves three participants, including the sender Alice, the signatory Bob and the trusted entity Charlie, in four phases, i.e., initializing phase, blinding phase, signing phase and verifying phase. In a small-scale quantum computation network, Alice blinds the message based on a quantum entanglement permutation encryption algorithm that embraces the chaotic position string. Bob signs the blinded message with private parameters shared beforehand while Charlie verifies the signature's validity and recovers the original message. Analysis shows that the proposed scheme achieves the secure blindness for the signer and traceability for the message owner with the aid of the authentic arbitrator who plays a crucial role when a dispute arises. In addition, the signature can neither be forged nor disavowed by the malicious attackers. It has a wide application to E-voting and E-payment system, etc.

  4. Holographic perfect shuffle permutation element for a miniaturized switching network

    NASA Astrophysics Data System (ADS)

    Kobolla, H.; Schmidt, J.; Gluch, E.; Schwider, J.

    1995-06-01

    A holographic perfect shuffle element with 80 channels for a miniaturized switching network is reported. An array of vertical-cavity, surface-emitting lasers is used as a transmitter. The whole permutation is carried out totally in glass. The 80 channels are permuted within a rectangle with a volume of 3 mm \\times 4 mm \\times 2 mm. Four planes of stacked volume holograms recorded in dichromated gelatin form this perfect shuffle element with an angular spectrum between 7 deg and 35 deg. Changes in the wavelength of the diode lasers to Delta lambda = +/-10 nm can be compensated with this setup. The overall efficiency per channel lies between 40% and 60%. When Fresnel reflections and absorption are taken into account, a transmission per hologram between 78% and 90% is achieved.

  5. 13. Interior detail, Blacksmith Shop, showing a portion of the ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    13. Interior detail, Blacksmith Shop, showing a portion of the original overhead belt drive system that powered machine tools in the adjacent Machine Shop, Roundhouse Machine Shop Extension, Southern Pacific Railroad Carlin Shops, view to west, 135mm lens. - Southern Pacific Railroad, Carlin Shops, Roundhouse Machine Shop Extension, Foot of Sixth Street, Carlin, Elko County, NV

  6. Successful attack on permutation-parity-machine-based neural cryptography

    NASA Astrophysics Data System (ADS)

    Seoane, Luís F.; Ruttor, Andreas

    2012-02-01

    An algorithm is presented which implements a probabilistic attack on the key-exchange protocol based on permutation parity machines. Instead of imitating the synchronization of the communicating partners, the strategy consists of a Monte Carlo method to sample the space of possible weights during inner rounds and an analytic approach to convey the extracted information from one outer round to the next one. The results show that the protocol under attack fails to synchronize faster than an eavesdropper using this algorithm.

  7. Testing of Error-Correcting Sparse Permutation Channel Codes

    NASA Technical Reports Server (NTRS)

    Shcheglov, Kirill, V.; Orlov, Sergei S.

    2008-01-01

    A computer program performs Monte Carlo direct numerical simulations for testing sparse permutation channel codes, which offer strong error-correction capabilities at high code rates and are considered especially suitable for storage of digital data in holographic and volume memories. A word in a code of this type is characterized by, among other things, a sparseness parameter (M) and a fixed number (K) of 1 or "on" bits in a channel block length of N.

  8. Gapped permutation pattern discovery for gene order comparisons.

    PubMed

    Parida, Laxmi

    2007-01-01

    The list of species whose complete DNA sequence have been read is growing steadily, and it is believed that comparative genomics is in its early days. Permutations patterns (groups of genes in some "close" proximity) on gene sequences of genomes across species is being studied under different models, to cope with this explosion of data. The challenge is to (intelligently and efficiently) analyze the genomes in the context of other genomes. In this paper, we present a generalized model that uses three notions, gapped permutation patterns (with gap g), genome clusters, via quorum, K>1, parameter, and, possible multiplicity in the patterns. The task is to automatically discover all permutation patterns (with possible multiplicity), that occur with gap g in at least K of the given m genomes. We present (log mN (I) + /Sigma/log/Sigma/N (O)) time algorithm where m is the number of sequences, each defined on Sigma, N (I) is the size of the input and N (O) is the size of the maximal gene clusters that appear in at least K of the m genomes.

  9. Innovativeness and Variety of Internet Shopping.

    ERIC Educational Resources Information Center

    Blake, Brian F.; Neuendorf, Kimberly A.; Valdiserri, Colin M.

    2003-01-01

    This survey of 208 Internet users examined the factors underlying Internet usage and shopping. Data were gathered on Information shopping (IS) innovativeness, overall IS frequency, visit variety, purchase variety, network prevalence, education, age, gender, employment, extensiveness of Internet use, and non-shopping Internet applications. (MES)

  10. 30 CFR 57.4532 - Blacksmith shops.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Blacksmith shops. 57.4532 Section 57.4532 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND NONMETAL MINE... Control Installation/construction/maintenance § 57.4532 Blacksmith shops. Blacksmith shops located on...

  11. 30 CFR 57.4532 - Blacksmith shops.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 30 Mineral Resources 1 2011-07-01 2011-07-01 false Blacksmith shops. 57.4532 Section 57.4532 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND NONMETAL MINE... Control Installation/construction/maintenance § 57.4532 Blacksmith shops. Blacksmith shops located on...

  12. 30 CFR 57.4532 - Blacksmith shops.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 30 Mineral Resources 1 2012-07-01 2012-07-01 false Blacksmith shops. 57.4532 Section 57.4532 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND NONMETAL MINE... Control Installation/construction/maintenance § 57.4532 Blacksmith shops. Blacksmith shops located on...

  13. 30 CFR 57.4532 - Blacksmith shops.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 30 Mineral Resources 1 2014-07-01 2014-07-01 false Blacksmith shops. 57.4532 Section 57.4532 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND NONMETAL MINE... Control Installation/construction/maintenance § 57.4532 Blacksmith shops. Blacksmith shops located on...

  14. 30 CFR 57.4532 - Blacksmith shops.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 30 Mineral Resources 1 2013-07-01 2013-07-01 false Blacksmith shops. 57.4532 Section 57.4532 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND NONMETAL MINE... Control Installation/construction/maintenance § 57.4532 Blacksmith shops. Blacksmith shops located on...

  15. The Shopping Mall: A Teenager Hangout.

    ERIC Educational Resources Information Center

    Anthony, Kathryn H.

    1985-01-01

    Investigated teenagers' use of the shopping mall as a "hangout" through interviews with 51 adolescents using the mall, and 10 hours of behavioral observations. Results indicated that many teenagers visit the shopping center regularly to watch members of the opposite sex, play video games, see friends, shop, and people-watch. (Author/NRB)

  16. 30 CFR 75.343 - Underground shops.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Underground shops. 75.343 Section 75.343... MANDATORY SAFETY STANDARDS-UNDERGROUND COAL MINES Ventilation § 75.343 Underground shops. (a) Underground shops shall be equipped with an automatic fire suppression system meeting the requirements of §...

  17. Handbook for Trade and Industrial Shop Teachers.

    ERIC Educational Resources Information Center

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

    This handbook is intended to help teachers of pre-employment shop courses in organizing and delivering instruction in both the shop and classroom. Addressed in the guide are the following topics: the instructor's place in the local school organization; the instructor's job (objectives, advisory committees, occupational analysis, shop/classroom and…

  18. 77 FR 56552 - Holiday Mobile Shopping Promotion

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-13

    ...] [Pages 56552-56554] [FR Doc No: 2012-22507] POSTAL SERVICE 39 CFR Part 111 Holiday Mobile Shopping... Holiday Mobile Shopping Promotion (``Promotion''), which will take place between November 7, 2012 and.../ Cyber Monday holiday shopping timeframe. In this final rule, the Postal Service provides a...

  19. Machine Shop. Student Learning Guide.

    ERIC Educational Resources Information Center

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

    This student learning guide contains eight modules for completing a course in machine shop. It is designed especially for use in Palm Beach County, Florida. Each module covers one task, and consists of a purpose, performance objective, enabling objectives, learning activities and resources, information sheets, student self-check with answer key,…

  20. Planning for Shops and Laboratories.

    ERIC Educational Resources Information Center

    North Carolina State Dept. of Public Instruction, Raleigh. Div. of School Planning.

    General guidelines for educators and architects in planning for industrial education, shops, and laboratory facilities necessary to the instructional program, are provided. Characteristics of the environment discussed are as follows--(1) spatial, (2) thermal, (3) visual, (4) sonic, and (5) aesthetic. Utility services covered are electrical power,…

  1. Machine Shop Fundamentals: Part I.

    ERIC Educational Resources Information Center

    Kelly, Michael G.; And Others

    These instructional materials were developed and designed for secondary and adult limited English proficient students enrolled in machine tool technology courses. Part 1 includes 24 lessons covering introduction, safety and shop rules, basic machine tools, basic machine operations, measurement, basic blueprint reading, layout, and bench tools.…

  2. Finite state model and compatibility theory: New analysis tools for permutation networks

    SciTech Connect

    Huang, S.T.; Fripathi, S.K.

    1986-07-01

    In this paper, the authors present a new model, finite permutation machine (FPM), to describe the permutation networks. A set of theorems are developed to capture the theory of operations for the permutation networks. Using this new framework, an interesting problem is attacked: are 2n-1 passes of shuffle exchange necessary and sufficient to realize all permutations. where n=log/sub 2/N and N is the number of inputs and outputs interconnected by the network. They prove that to realize all permutations, 2n-1 passes of shuffle exchange are necessary and that 3n-3 passes are sufficient. This reduces the sufficient number of passes by 2 from the best-known result. Benes network is the most well-known network that can realize all permutations. To show the flexibility of the approach, the authors describe a general class of FPM, stack permutation machine (SPM), which can realize all permutations, and show that FPM corresponding to Benes network belongs to SPM. They also show that FPM corresponding to the network with 2 cascaded reverse-exchange networks can realize all permutations. To show the simplicity of the approach, they also present a very simple mechanism to verify several equivalence relationships of various permutation networks.

  3. Permutation test for periodicity in short time series data

    PubMed Central

    Ptitsyn, Andrey A; Zvonic, Sanjin; Gimble, Jeffrey M

    2006-01-01

    Background Periodic processes, such as the circadian rhythm, are important factors modulating and coordinating transcription of genes governing key metabolic pathways. Theoretically, even small fluctuations in the orchestration of circadian gene expression patterns among different tissues may result in functional asynchrony at the organism level and may contribute to a wide range of pathologic disorders. Identification of circadian expression pattern in time series data is important, but equally challenging. Microarray technology allows estimation of relative expression of thousands of genes at each time point. However, this estimation often lacks precision and microarray experiments are prohibitively expensive, limiting the number of data points in a time series expression profile. The data produced in these experiments carries a high degree of stochastic variation, obscuring the periodic pattern and a limited number of replicates, typically covering not more than two complete periods of oscillation. Results To address this issue, we have developed a simple, but effective, computational technique for the identification of a periodic pattern in relatively short time series, typical for microarray studies of circadian expression. This test is based on a random permutation of time points in order to estimate non-randomness of a periodogram. The Permutated time, or Pt-test, is able to detect oscillations within a given period in expression profiles dominated by a high degree of stochastic fluctuations or oscillations of different irrelevant frequencies. We have conducted a comprehensive study of circadian expression on a large data set produced at PBRC, representing three different peripheral murine tissues. We have also re-analyzed a number of similar time series data sets produced and published independently by other research groups over the past few years. Conclusion The Permutated time test (Pt-test) is demonstrated to be effective for detection of periodicity in

  4. Genuine multipartite nonlocality of permutationally invariant Gaussian states

    NASA Astrophysics Data System (ADS)

    Xu, Buqing; Tufarelli, Tommaso; Adesso, Gerardo

    2017-01-01

    We investigate genuine multipartite nonlocality of pure permutationally invariant multimode Gaussian states of continuous variable systems, as detected by the violation of Svetlichny inequality. We identify the phase space settings leading to the largest violation of the inequality when using displaced parity measurements, distinguishing our results between the cases of even and odd total number of modes. We further consider pseudospin measurements and show that, for three-mode states with asymptotically large squeezing degree, particular settings of these measurements allow one to approach the maximum violation of Svetlichny inequality allowed by quantum mechanics. This indicates that the strongest manifestation of genuine multipartite quantum nonlocality is in principle verifiable on Gaussian states.

  5. Security of the Five-Round KASUMI Type Permutation

    NASA Astrophysics Data System (ADS)

    Iwata, Tetsu; Yagi, Tohru; Kurosawa, Kaoru

    KASUMI is a blockcipher that forms the heart of the 3GPP confidentiality and integrity algorithms. In this paper, we study the security of the five-round KASUMI type permutations, and derive a highly non-trivial security bound against adversaries with adaptive chosen plaintext and chosen ciphertext attacks. To derive our security bound, we heavily use the tools from graph theory. However the result does not show its super-pseudorandomness, this gives us a strong evidence that the design of KASUMI is sound.

  6. Photographs and Committees: Activities That Help Students Discover Permutations and Combinations.

    ERIC Educational Resources Information Center

    Szydlik, Jennifer Earles

    2000-01-01

    Presents problem situations that support students when discovering the multiplication principle, permutations, combinations, Pascal's triangle, and relationships among those objects in a concrete context. (ASK)

  7. Construction of a random circular permutation library using an engineered transposon.

    PubMed

    Pierre, Brennal; Shah, Vandan; Xiao, Jenny; Kim, Jin Ryoun

    2015-04-01

    Circular permutation is an important protein engineering tool used to create sequence diversity of a protein by changing its linear order of amino acid sequence. Circular permutation has proven to be effective in the evolution of proteins for desired properties while maintaining similar three-dimensional structures. Due to the lack of a robust design principle guiding the selection of new termini, construction of a combinatorial library is much preferred for comprehensive evaluation of circular permutation. Unfortunately, the conventional methods used to create random circular permutation libraries cause significant sequence modification at new termini of circular permutants. In addition, these methods impose additional limitations by requiring either relatively inefficient blunt-end ligation during library construction or redesign of transposons for tailored expression of circular permutants. In this study, we present the development of an engineered transposon for facile construction of random circular permutation libraries. We provide evidence that minimal modification at the new termini of the random circular permutants is possible with our engineered transposon. In addition, our method enables the use of sticky-end ligation during library construction and provides external tunability for expression of random circular permutants.

  8. 19. Interior detail, grinder and drill press, Machine Shop, Roundhouse ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    19. Interior detail, grinder and drill press, Machine Shop, Roundhouse Machine Shop Extension, Southern Pacific Railroad Carlin Shops, view to south (135mm lens). - Southern Pacific Railroad, Carlin Shops, Roundhouse Machine Shop Extension, Foot of Sixth Street, Carlin, Elko County, NV

  9. 18. Interior detail, drill press and grinder, Machine Shop, Roundhouse ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    18. Interior detail, drill press and grinder, Machine Shop, Roundhouse Machine Shop Extension, Southern Pacific Railroad Carlin Shops, view to east (135mm lens). - Southern Pacific Railroad, Carlin Shops, Roundhouse Machine Shop Extension, Foot of Sixth Street, Carlin, Elko County, NV

  10. 5. VIEW EASTOPENING IN WEST ELEVATION OF BLACKSMITH SHOP SECTION ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. VIEW EAST-OPENING IN WEST ELEVATION OF BLACKSMITH SHOP SECTION OF THE BETHLEHEM STEEL COMPANY SHIPYARD BLACKSMITH SHOP/BOILER SHOP. - Bethlehem Steel Company Shipyard, Blacksmith Shop-Boiler Shop, 1201-1321 Hudson Street, Hoboken, Hudson County, NJ

  11. Genetic algorithms with permutation coding for multiple sequence alignment.

    PubMed

    Ben Othman, Mohamed Tahar; Abdel-Azim, Gamil

    2013-08-01

    Multiple sequence alignment (MSA) is one of the topics of bio informatics that has seriously been researched. It is known as NP-complete problem. It is also considered as one of the most important and daunting tasks in computational biology. Concerning this a wide number of heuristic algorithms have been proposed to find optimal alignment. Among these heuristic algorithms are genetic algorithms (GA). The GA has mainly two major weaknesses: it is time consuming and can cause local minima. One of the significant aspects in the GA process in MSA is to maximize the similarities between sequences by adding and shuffling the gaps of Solution Coding (SC). Several ways for SC have been introduced. One of them is the Permutation Coding (PC). We propose a hybrid algorithm based on genetic algorithms (GAs) with a PC and 2-opt algorithm. The PC helps to code the MSA solution which maximizes the gain of resources, reliability and diversity of GA. The use of the PC opens the area by applying all functions over permutations for MSA. Thus, we suggest an algorithm to calculate the scoring function for multiple alignments based on PC, which is used as fitness function. The time complexity of the GA is reduced by using this algorithm. Our GA is implemented with different selections strategies and different crossovers. The probability of crossover and mutation is set as one strategy. Relevant patents have been probed in the topic.

  12. Exploiting Lipid Permutation Symmetry to Compute Membrane Remodeling Free Energies

    NASA Astrophysics Data System (ADS)

    Bubnis, Greg; Risselada, Herre Jelger; Grubmüller, Helmut

    2016-10-01

    A complete physical description of membrane remodeling processes, such as fusion or fission, requires knowledge of the underlying free energy landscapes, particularly in barrier regions involving collective shape changes, topological transitions, and high curvature, where Canham-Helfrich (CH) continuum descriptions may fail. To calculate these free energies using atomistic simulations, one must address not only the sampling problem due to high free energy barriers, but also an orthogonal sampling problem of combinatorial complexity stemming from the permutation symmetry of identical lipids. Here, we solve the combinatorial problem with a permutation reduction scheme to map a structural ensemble into a compact, nondegenerate subregion of configuration space, thereby permitting straightforward free energy calculations via umbrella sampling. We applied this approach, using a coarse-grained lipid model, to test the CH description of bending and found sharp increases in the bending modulus for curvature radii below 10 nm. These deviations suggest that an anharmonic bending term may be required for CH models to give quantitative energetics of highly curved states.

  13. Permuting sparse rectangular matrices into block-diagonal form

    SciTech Connect

    Aykanat, Cevdet; Pinar, Ali; Catalyurek, Umit V.

    2002-12-09

    This work investigates the problem of permuting a sparse rectangular matrix into block diagonal form. Block diagonal form of a matrix grants an inherent parallelism for the solution of the deriving problem, as recently investigated in the context of mathematical programming, LU factorization and QR factorization. We propose graph and hypergraph models to represent the nonzero structure of a matrix, which reduce the permutation problem to those of graph partitioning by vertex separator and hypergraph partitioning, respectively. Besides proposing the models to represent sparse matrices and investigating related combinatorial problems, we provide a detailed survey of relevant literature to bridge the gap between different societies, investigate existing techniques for partitioning and propose new ones, and finally present a thorough empirical study of these techniques. Our experiments on a wide range of matrices, using state-of-the-art graph and hypergraph partitioning tools MeTiS and PaT oH, revealed that the proposed methods yield very effective solutions both in terms of solution quality and run time.

  14. Maze permutations during minimally invasive mitral valve surgery

    PubMed Central

    2015-01-01

    Surgical ablation for atrial fibrillation is most frequently done in the concomitant setting, and most commonly with mitral valve surgery. Minimally invasive surgical techniques for the treatment of atrial fibrillation have developed contemporaneously with techniques for minimally invasive mitral valve surgery. As in traditional surgery for atrial fibrillation, there are many different permutations of ablations for the less invasive approaches. Lesion sets can vary from simple pulmonary vein isolation (PVI) to full bi-atrial lesions that completely reproduce the traditional cut-and-sew Cox Maze III procedure with variable efficacy in restoring sinus rhythm. Additionally, treatment of the atrial appendage can be done through minimally invasive approaches without any ablation at all in an attempt to mitigate the risk of stroke. Finally, hybrid procedures combining minimally invasive surgery and catheter-based ablation are being developed that might augment surgical treatment of atrial fibrillation at the time of minimally invasive mitral valve repair. These various permutations and their results are reviewed. PMID:26539352

  15. Permutation auto-mutual information of electroencephalogram in anesthesia

    NASA Astrophysics Data System (ADS)

    Liang, Zhenhu; Wang, Yinghua; Ouyang, Gaoxiang; Voss, Logan J.; Sleigh, Jamie W.; Li, Xiaoli

    2013-04-01

    Objective. The dynamic change of brain activity in anesthesia is an interesting topic for clinical doctors and drug designers. To explore the dynamical features of brain activity in anesthesia, a permutation auto-mutual information (PAMI) method is proposed to measure the information coupling of electroencephalogram (EEG) time series obtained in anesthesia. Approach. The PAMI is developed and applied on EEG data collected from 19 patients under sevoflurane anesthesia. The results are compared with the traditional auto-mutual information (AMI), SynchFastSlow (SFS, derived from the BIS index), permutation entropy (PE), composite PE (CPE), response entropy (RE) and state entropy (SE). Performance of all indices is assessed by pharmacokinetic/pharmacodynamic (PK/PD) modeling and prediction probability. Main results. The PK/PD modeling and prediction probability analysis show that the PAMI index correlates closely with the anesthetic effect. The coefficient of determination R2 between PAMI values and the sevoflurane effect site concentrations, and the prediction probability Pk are higher in comparison with other indices. The information coupling in EEG series can be applied to indicate the effect of the anesthetic drug sevoflurane on the brain activity as well as other indices. The PAMI of the EEG signals is suggested as a new index to track drug concentration change. Significance. The PAMI is a useful index for analyzing the EEG dynamics during general anesthesia.

  16. The complexity of gene expression dynamics revealed by permutation entropy

    PubMed Central

    2010-01-01

    Background High complexity is considered a hallmark of living systems. Here we investigate the complexity of temporal gene expression patterns using the concept of Permutation Entropy (PE) first introduced in dynamical systems theory. The analysis of gene expression data has so far focused primarily on the identification of differentially expressed genes, or on the elucidation of pathway and regulatory relationships. We aim to study gene expression time series data from the viewpoint of complexity. Results Applying the PE complexity metric to abiotic stress response time series data in Arabidopsis thaliana, genes involved in stress response and signaling were found to be associated with the highest complexity not only under stress, but surprisingly, also under reference, non-stress conditions. Genes with house-keeping functions exhibited lower PE complexity. Compared to reference conditions, the PE of temporal gene expression patterns generally increased upon stress exposure. High-complexity genes were found to have longer upstream intergenic regions and more cis-regulatory motifs in their promoter regions indicative of a more complex regulatory apparatus needed to orchestrate their expression, and to be associated with higher correlation network connectivity degree. Arabidopsis genes also present in other plant species were observed to exhibit decreased PE complexity compared to Arabidopsis specific genes. Conclusions We show that Permutation Entropy is a simple yet robust and powerful approach to identify temporal gene expression profiles of varying complexity that is equally applicable to other types of molecular profile data. PMID:21176199

  17. Commodity predictability analysis with a permutation information theory approach

    NASA Astrophysics Data System (ADS)

    Zunino, Luciano; Tabak, Benjamin M.; Serinaldi, Francesco; Zanin, Massimiliano; Pérez, Darío G.; Rosso, Osvaldo A.

    2011-03-01

    It is widely known that commodity markets are not totally efficient. Long-range dependence is present, and thus the celebrated Brownian motion of prices can be considered only as a first approximation. In this work we analyzed the predictability in commodity markets by using a novel approach derived from Information Theory. The complexity-entropy causality plane has been recently shown to be a useful statistical tool to distinguish the stage of stock market development because differences between emergent and developed stock markets can be easily discriminated and visualized with this representation space [L. Zunino, M. Zanin, B.M. Tabak, D.G. Pérez, O.A. Rosso, Complexity-entropy causality plane: a useful approach to quantify the stock market inefficiency, Physica A 389 (2010) 1891-1901]. By estimating the permutation entropy and permutation statistical complexity of twenty basic commodity future markets over a period of around 20 years (1991.01.02-2009.09.01), we can define an associated ranking of efficiency. This ranking is quantifying the presence of patterns and hidden structures in these prime markets. Moreover, the temporal evolution of the commodities in the complexity-entropy causality plane allows us to identify periods of time where the underlying dynamics is more or less predictable.

  18. Passion and dependency in online shopping activities.

    PubMed

    Wang, Chih-Chien; Yang, Hui-Wen

    2007-04-01

    This study examines the influence of harmonious passion (HP) and obsessive passion (OP) to online shopping dependency. The results show that both HP and OP might lead to online shopping dependency and online shoppers with OP are more dependent on online shopping activities. In addition, this study also found out that HP and OP could be denoted as a sequence of different intensities of passion, where HP might be a necessity of OP.

  19. VIEW NORTHLEFTBUILDING 32MACHINE SHOP (1890) CENTERBUILDING BLACKSMITH SHOP (1885) RIGHTBUILDING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW NORTH-LEFT-BUILDING 32-MACHINE SHOP (1890) CENTER-BUILDING BLACKSMITH SHOP (1885) RIGHT-BUILDING 40-ROPE WAREHOUSE (1915) 3 STORIES BUILDING 42-ROPE SHOP (1910) - John A. Roebling's Sons Company & American Steel & Wire Company, South Broad, Clark, Elmer, Mott & Hudson Streets, Trenton, Mercer County, NJ

  20. 4. GENERAL VIEW LOOKING WEST AT MACHINE SHOP IN KEYSER. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    4. GENERAL VIEW LOOKING WEST AT MACHINE SHOP IN KEYSER. OLD TRAIN SHED TO RIGHT OF MACHINE SHOP. - Baltimore & Ohio Railroad, Keyser Machine Shop, State Route 46 Northwest of Spring Street, Keyser, Mineral County, WV

  1. 39. LOOKING SOUTH ACROSS THE NORTH PART SHOP TO THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    39. LOOKING SOUTH ACROSS THE NORTH PART SHOP TO THE LARGE CENTRAL PART SHOP, FROM NEAR THE NORTHEAST CORNER OF BUILDING NO. 1. - United Engineering Company Shipyard, Inspection & Repair Shops, 2900 Main Street, Alameda, Alameda County, CA

  2. 43. PROCESS WELDING SHEDS (FABRICATION SHOPS) ON RIGHT, AND TANK ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    43. PROCESS WELDING SHEDS (FABRICATION SHOPS) ON RIGHT, AND TANK BARGE, CRANES, PAINT SHOP AND PIPE/MACHINE SHOP IN BACKGROUND, LOOKING NORTHEAST - Hillman Barge & Construction Company, Paul Thomas Boulevard, Brownsville, Fayette County, PA

  3. 9. LOOKING NORTH ON SPRUCE STREET, SHOWING MILLWRIGHT SHOP, FITTING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. LOOKING NORTH ON SPRUCE STREET, SHOWING MILLWRIGHT SHOP, FITTING SHOP, ADMINISTRATION BUILDING AND ERECTING SHOP - UNION WORKS IN BACKGROUND. - Rogers Locomotive & Machine Works, Spruce & Market Streets, Paterson, Passaic County, NJ

  4. 7. NW corner of Blacksmith Shop showing roof truss connection ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. NW corner of Blacksmith Shop showing roof truss connection at top of brick wall. - Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, Blacksmith Shop, Bounded by West Broad, Jones, West Boundary & Hull Streets, Savannah, Chatham County, GA

  5. 5. Interior view looking W down length of Blacksmith Shop ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. Interior view looking W down length of Blacksmith Shop - Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, Blacksmith Shop, Bounded by West Broad, Jones, West Boundary & Hull Streets, Savannah, Chatham County, GA

  6. 8. Exterior view of Blacksmith Shop window. Central of ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. Exterior view of Blacksmith Shop window. - Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, Blacksmith Shop, Bounded by West Broad, Jones, West Boundary & Hull Streets, Savannah, Chatham County, GA

  7. 2. Partial N elevation of Blacksmith Shop. Central of ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. Partial N elevation of Blacksmith Shop. - Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, Blacksmith Shop, Bounded by West Broad, Jones, West Boundary & Hull Streets, Savannah, Chatham County, GA

  8. 6. Interior of W end wall Blacksmith Shop. Central ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. Interior of W end wall Blacksmith Shop. - Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, Blacksmith Shop, Bounded by West Broad, Jones, West Boundary & Hull Streets, Savannah, Chatham County, GA

  9. BLACKSMITH SHOP ROOF STRUCTURE AT JUNCTION BETWEEN 60 FT. AND ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    BLACKSMITH SHOP ROOF STRUCTURE AT JUNCTION BETWEEN 60 FT. AND 90 FT. SPAN ROOF TRUSSES, LOOKING SOUTH. - Southern Pacific, Sacramento Shops, Blacksmith Shop, 111 I Street, Sacramento, Sacramento County, CA

  10. 1. Threequarter view of W elevation of Blacksmith Shop. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. Three-quarter view of W elevation of Blacksmith Shop. - Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, Blacksmith Shop, Bounded by West Broad, Jones, West Boundary & Hull Streets, Savannah, Chatham County, GA

  11. PAINT SHOP, DETAIL OF FABRICATED COLUMN AT JUNCTION OF WEST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    PAINT SHOP, DETAIL OF FABRICATED COLUMN AT JUNCTION OF WEST BAY (ORIGINAL) AND CENTER BAYS (SECOND ADDITION), LOOKING NORTHEAST. - Southern Pacific, Sacramento Shops, Paint Shop, 111 I Street, Sacramento, Sacramento County, CA

  12. PAINT SHOP, FIRST FLOOR, NORTHEAST CORNER OFFICE INTERIOR, LOOKING WEST. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    PAINT SHOP, FIRST FLOOR, NORTHEAST CORNER OFFICE INTERIOR, LOOKING WEST. PROJECTING WALLS WITH INFILLED ARCHES WERE PART OF ONE PAINTING BOOTH IN ORIGINAL STRUCTURE. - Southern Pacific, Sacramento Shops, Paint Shop, 111 I Street, Sacramento, Sacramento County, CA

  13. View looking SE inside Electrical Shop Central of Georgia ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View looking SE inside Electrical Shop - Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, Electrical Shop, Bounded by West Broad, Jones, West Boundary & Hull Streets, Savannah, Chatham County, GA

  14. Detail of large, brick columns and bracket inside Electrical Shop ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Detail of large, brick columns and bracket inside Electrical Shop - Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, Electrical Shop, Bounded by West Broad, Jones, West Boundary & Hull Streets, Savannah, Chatham County, GA

  15. AUTOMOTIVE REPAIR SHOP, DETAIL OF MILLS COAL BOILER WITH SCREWFEED ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    AUTOMOTIVE REPAIR SHOP, DETAIL OF MILLS COAL BOILER WITH SCREW-FEED COAL HOPPER ON RIGHT SIDE, WITH SCALE. - Cedar City Automotive Repair Shop, Automotive Repair Shop, 820 North Main Street, Cedar City, Iron County, UT

  16. Lube rack of Automotive and Tractor Repair Shops with Warehousefield ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Lube rack of Automotive and Tractor Repair Shops with Warehouse-field Equipment Repair Shop Building's wall to the right, looking from the south - Kekaha Sugar Company, Automotive and Tractor Repair Shops, 8315 Kekaha Road, Kekaha, Kauai County, HI

  17. AUTOMOTIVE REPAIR SHOP, SLIDING DOOR LEADING TO BOILER ROOM ON ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    AUTOMOTIVE REPAIR SHOP, SLIDING DOOR LEADING TO BOILER ROOM ON SOUTH SIDE OF SOUTH WING. - Cedar City Automotive Repair Shop, Automotive Repair Shop, 820 North Main Street, Cedar City, Iron County, UT

  18. View of south elevation of Automotive and Tractor Repair Shops ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View of south elevation of Automotive and Tractor Repair Shops with the Warehouse Fabrication Shop and Stack in the background, looking from the southwest - Kekaha Sugar Company, Automotive and Tractor Repair Shops, 8315 Kekaha Road, Kekaha, Kauai County, HI

  19. AUTOMOTIVE REPAIR SHOP, DETAIL OF BUILDING CORNER (MAIN WING) SHOWING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    AUTOMOTIVE REPAIR SHOP, DETAIL OF BUILDING CORNER (MAIN WING) SHOWING WOOD EAVE AND STUCCO RAKEBOARD ON GABLE END, WITH SCALE. - Cedar City Automotive Repair Shop, Automotive Repair Shop, 820 North Main Street, Cedar City, Iron County, UT

  20. AUTOMOTIVE REPAIR SHOP, DETAIL OF FABRICATING PRESS IN EAST END ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    AUTOMOTIVE REPAIR SHOP, DETAIL OF FABRICATING PRESS IN EAST END OF MAIN WING, WITH SCALE. - Cedar City Automotive Repair Shop, Automotive Repair Shop, 820 North Main Street, Cedar City, Iron County, UT

  1. AUTOMOTIVE REPAIR SHOP, DETAIL OF MILLS COAL BOILER WITH SCREWFEED ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    AUTOMOTIVE REPAIR SHOP, DETAIL OF MILLS COAL BOILER WITH SCREW-FEED COAL HOPPER ON RIGHT SIDE. - Cedar City Automotive Repair Shop, Automotive Repair Shop, 820 North Main Street, Cedar City, Iron County, UT

  2. AUTOMOTIVE REPAIR SHOP, DETAIL OF BUILDING CORNER (MAIN WING) SHOWING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    AUTOMOTIVE REPAIR SHOP, DETAIL OF BUILDING CORNER (MAIN WING) SHOWING WOOD EAVE AND STUCCO RAKEBOARD ON GABLE END. - Cedar City Automotive Repair Shop, Automotive Repair Shop, 820 North Main Street, Cedar City, Iron County, UT

  3. AUTOMOTIVE REPAIR SHOP, SLIDING DOOR LEADING TO BOILER ROOM ON ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    AUTOMOTIVE REPAIR SHOP, SLIDING DOOR LEADING TO BOILER ROOM ON SOUTH SIDE OF SOUTH WING, WITH SCALE. - Cedar City Automotive Repair Shop, Automotive Repair Shop, 820 North Main Street, Cedar City, Iron County, UT

  4. 10. VIEW OF BOILER SHOP FROM TOP OF BOX CAR ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. VIEW OF BOILER SHOP FROM TOP OF BOX CAR WITH CIRCULAR CAR SHOP IN BACKGROUND LOOKING NORTHEAST. - Baltimore & Ohio Railroad, Mount Clare Shops, South side of Pratt Street between Carey & Poppleton Streets, Baltimore, Independent City, MD

  5. CAR MACHINE SHOP, SECOND FLOOR, LYE TANKS FOR CLEANING METAL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    CAR MACHINE SHOP, SECOND FLOOR, LYE TANKS FOR CLEANING METAL PRIOR TO PLATING, LOOKING SOUTH FROM ATTIC. - Southern Pacific, Sacramento Shops, Car Machine Shop, 111 I Street, Sacramento, Sacramento County, CA

  6. 5. RAILROAD TRRACKS LEADING TO PAINT & REPAIR SHOP; PASSENGER ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. RAILROAD TRRACKS LEADING TO PAINT & REPAIR SHOP; PASSENGER CAR SHOP TO THE LEFT - Baltimore & Ohio Railroad, Mount Clare Passenger Car Shop, Southwest corner of Pratt & Poppleton Streets, Baltimore, Independent City, MD

  7. CAR MACHINE SHOP, SECOND FLOOR, PAINT SPRAY ROOM EXTERIOR AND ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    CAR MACHINE SHOP, SECOND FLOOR, PAINT SPRAY ROOM EXTERIOR AND ATTIC FLOOR SUPPORT COLUMNS AND BEAMS, LOOKING WEST. - Southern Pacific, Sacramento Shops, Car Machine Shop, 111 I Street, Sacramento, Sacramento County, CA

  8. CAR MACHINE SHOP, FIRST FLOOR, DETAIL OF WOOD COLUMN AND ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    CAR MACHINE SHOP, FIRST FLOOR, DETAIL OF WOOD COLUMN AND INVERTED KING-POST TRUSS TO PROVIDE INCREASED SPAN BETWEEN COLUMNS, LOOKING SOUTH. - Southern Pacific, Sacramento Shops, Car Machine Shop, 111 I Street, Sacramento, Sacramento County, CA

  9. CAR MACHINE SHOP, SECOND FLOOR, LYE TANKS FOR CLEANING METAL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    CAR MACHINE SHOP, SECOND FLOOR, LYE TANKS FOR CLEANING METAL PRIOR TO PLATING, LOOKING SOUTHWEST FROM ATTIC. - Southern Pacific, Sacramento Shops, Car Machine Shop, 111 I Street, Sacramento, Sacramento County, CA

  10. 10. Interior view, east shop, ground floor, looking northwest, showing ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. Interior view, east shop, ground floor, looking northwest, showing hardware storage rooms in tin shop area at right. - Larrabee & Hingston Company, Main Shop Building, 19 Howley Street, Peabody, Essex County, MA

  11. Detail of heating coil for Machine Shop (Bldg. 163) ventilation ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Detail of heating coil for Machine Shop (Bldg. 163) ventilation system Note portion of fan visible behind coil - Atchison, Topeka, Santa Fe Railroad, Albuquerque Shops, Machine Shop, 908 Second Street, Southwest, Albuquerque, Bernalillo County, NM

  12. Using R to Simulate Permutation Distributions for Some Elementary Experimental Designs

    ERIC Educational Resources Information Center

    Eudey, T. Lynn; Kerr, Joshua D.; Trumbo, Bruce E.

    2010-01-01

    Null distributions of permutation tests for two-sample, paired, and block designs are simulated using the R statistical programming language. For each design and type of data, permutation tests are compared with standard normal-theory and nonparametric tests. These examples (often using real data) provide for classroom discussion use of metrics…

  13. Students' Errors in Solving the Permutation and Combination Problems Based on Problem Solving Steps of Polya

    ERIC Educational Resources Information Center

    Sukoriyanto; Nusantara, Toto; Subanji; Chandra, Tjang Daniel

    2016-01-01

    This article was written based on the results of a study evaluating students' errors in problem solving of permutation and combination in terms of problem solving steps according to Polya. Twenty-five students were asked to do four problems related to permutation and combination. The research results showed that the students still did a mistake in…

  14. Four applications of permutation methods to testing a single-mediator model.

    PubMed

    Taylor, Aaron B; MacKinnon, David P

    2012-09-01

    Four applications of permutation tests to the single-mediator model are described and evaluated in this study. Permutation tests work by rearranging data in many possible ways in order to estimate the sampling distribution for the test statistic. The four applications to mediation evaluated here are the permutation test of ab, the permutation joint significance test, and the noniterative and iterative permutation confidence intervals for ab. A Monte Carlo simulation study was used to compare these four tests with the four best available tests for mediation found in previous research: the joint significance test, the distribution of the product test, and the percentile and bias-corrected bootstrap tests. We compared the different methods on Type I error, power, and confidence interval coverage. The noniterative permutation confidence interval for ab was the best performer among the new methods. It successfully controlled Type I error, had power nearly as good as the most powerful existing methods, and had better coverage than any existing method. The iterative permutation confidence interval for ab had lower power than do some existing methods, but it performed better than any other method in terms of coverage. The permutation confidence interval methods are recommended when estimating a confidence interval is a primary concern. SPSS and SAS macros that estimate these confidence intervals are provided.

  15. Permutation-parity exchange at a beam splitter: Application to Heisenberg-limited interferometry

    SciTech Connect

    Campos, Richard A.; Gerry, Christopher C.

    2005-12-15

    Quantum-optical permutation and parity observables are unitarily exchanged by a 50:50 beam splitter. Bosonic coalescence effects are reexamined from this point of view. We show that photon-number resolving counters behind a beam splitter define a permutation detector for the input optical field. With suitable phase encoding, the detector also enables Heisenberg-limited interferometry.

  16. Statistical Significance of the Contribution of Variables to the PCA Solution: An Alternative Permutation Strategy

    ERIC Educational Resources Information Center

    Linting, Marielle; van Os, Bart Jan; Meulman, Jacqueline J.

    2011-01-01

    In this paper, the statistical significance of the contribution of variables to the principal components in principal components analysis (PCA) is assessed nonparametrically by the use of permutation tests. We compare a new strategy to a strategy used in previous research consisting of permuting the columns (variables) of a data matrix…

  17. Circular Permutation of a Chaperonin Protein: Biophysics and Application to Nanotechnology

    NASA Technical Reports Server (NTRS)

    Paavola, Chad; Chan, Suzanne; Li, Yi-Fen; McMillan, R. Andrew; Trent, Jonathan

    2004-01-01

    We have designed five circular permutants of a chaperonin protein derived from the hyperthermophilic organism Sulfolobus shibatae. These permuted proteins were expressed in E. coli and are well-folded. Furthermore, all the permutants assemble into 18-mer double rings of the same form as the wild-type protein. We characterized the thermodynamics of folding for each permutant by both guanidine denaturation and differential scanning calorimetry. We also examined the assembly of chaperonin rings into higher order structures that may be used as nanoscale templates. The results show that circular permutation can be used to tune the thermodynamic properties of a protein template as well as facilitating the fusion of peptides, binding proteins or enzymes onto nanostructured templates.

  18. A self-adaptive image encryption scheme with half-pixel interchange permutation operation

    NASA Astrophysics Data System (ADS)

    Ye, Ruisong; Liu, Li; Liao, Minyu; Li, Yafang; Liao, Zikang

    2017-01-01

    A plain-image dependent image encryption scheme with half-pixel-level swapping permutation strategy is proposed. In the new permutation operation, a pixel-swapping operation between four higher bit-planes and four lower bit-planes is employed to replace the traditional confusion operation, which not only improves the conventional permutation efficiency within the plain-image, but also changes all the pixel gray values. The control parameters of generalized Arnold map applied for the permutation operation are related to the plain-image content and consequently can resist chosen-plaintext and known-plaintext attacks effectively. To enhance the security of the proposed image encryption, one multimodal skew tent map is applied to generate pseudo-random gray value sequence for diffusion operation. Simulations have been carried out thoroughly to demonstrate that the proposed image encryption scheme is highly secure thanks to its large key space and efficient permutation-diffusion operations.

  19. All possible permutational symmetries of a quantum system

    NASA Astrophysics Data System (ADS)

    Arnaud, Ludovic

    2016-01-01

    We investigate the intermediate permutational symmetries of a system of qubits that lie in between the perfect symmetric and antisymmetric cases. We prove that, on average, pure states of qubits picked at random with respect to the uniform measure on the unit sphere of the Hilbert space are almost as antisymmetric as they are allowed to be. We then observe that multipartite entanglement, measured by the generalized Meyer-Wallach measure, tends to be larger in subspaces that are more antisymmetric than the complete symmetric one. Eventually, we prove that all states contained in the most antisymmetric subspace are relevant multipartite entangled states in the sense that their 1-qubit reduced states are all maximally mixed.

  20. Discriminating chaotic and stochastic dynamics through the permutation spectrum test

    SciTech Connect

    Kulp, C. W.; Zunino, L.

    2014-09-01

    In this paper, we propose a new heuristic symbolic tool for unveiling chaotic and stochastic dynamics: the permutation spectrum test. Several numerical examples allow us to confirm the usefulness of the introduced methodology. Indeed, we show that it is robust in situations in which other techniques fail (intermittent chaos, hyperchaotic dynamics, stochastic linear and nonlinear correlated dynamics, and deterministic non-chaotic noise-driven dynamics). We illustrate the applicability and reliability of this pragmatic method by examining real complex time series from diverse scientific fields. Taking into account that the proposed test has the advantages of being conceptually simple and computationally fast, we think that it can be of practical utility as an alternative test for determinism.

  1. Permutation Entropy Applied to Movement Behaviors of Drosophila Melanogaster

    NASA Astrophysics Data System (ADS)

    Liu, Yuedan; Chon, Tae-Soo; Baek, Hunki; Do, Younghae; Choi, Jin Hee; Chung, Yun Doo

    Movement of different strains in Drosophila melanogaster was continuously observed by using computer interfacing techniques and was analyzed by permutation entropy (PE) after exposure to toxic chemicals, toluene (0.1 mg/m3) and formaldehyde (0.01 mg/m3). The PE values based on one-dimensional time series position (vertical) data were variable according to internal constraint (i.e. strains) and accordingly increased in response to external constraint (i.e. chemicals) by reflecting diversity in movement patterns from both normal and intoxicated states. Cross-correlation function revealed temporal associations between the PE values and between the component movement patterns in different chemicals and strains through the period of intoxication. The entropy based on the order of position data could be a useful means for complexity measure in behavioral changes and for monitoring the impact of stressors in environment.

  2. Permutation symmetry and the origin of fermion mass hierarchy

    SciTech Connect

    Babu, K.S.; Mohapatra, R.N. )

    1990-06-04

    A realization of the flavor-democracy'' approach to quark and lepton masses is provided in the context of the standard model with a horizontal {ital S}{sub 3} permutation symmetry. In this model, {ital t} and {ital b} quarks pick up mass at the tree level, {ital c}, {ital s}-quark and {tau}-lepton masses arise at the one-loop level, {ital u}, {ital d}, and {mu} masses at the two-loop level, and the electron mass at the three-loop level, thus reproducing the observed hierarchial structure without fine tuning of the Yukawa couplings. The pattern of quark mixing angles also emerges naturally, with {ital V}{sub {ital u}{ital s}},{ital V}{sub {ital c}{ital b}}{approx}{ital O}({epsilon}), {ital V}{sub {ital u}{ital b}}{approx}{ital O}({epsilon}{sup 2}), where {epsilon} is a loop expansion parameter.

  3. Geological applications of multi-response permutation procedures

    USGS Publications Warehouse

    Orlowski, L.A.; Grundy, W.D.; Mielke, P.W.; Schumm, S.A.

    1993-01-01

    The multi-purpose permutation procedures (MRPP) test statistic is designed to analyze multivariate data at the ordinal or higher levels. It is based on the weighted averages of symmetric distance functions over all paired objects within a priori disjoint groups of objects from a finite population of objects where each object's response is a point in an r-dimensional space. Thus, the arguments of each r-dimensional point correspond to the r measured responses of each object in the finite population of objects. The null hypothesis underlying MRPP is that the observed sample of objects within groups of a specified size structure is randomly obtained from the pooled collection of objects comprising the finite population. The procedure is used to test the presumed geomorphic differences among three reaches of the Lower Mississippi River. A combination of the proposed reaches is favored and several variable-based reach configurations are proposed. ?? 1993 International Association for Mathernatical Geology.

  4. Refined scale-dependent permutation entropy to analyze systems complexity

    NASA Astrophysics Data System (ADS)

    Wu, Shuen-De; Wu, Chiu-Wen; Humeau-Heurtier, Anne

    2016-05-01

    Multiscale entropy (MSE) has become a prevailing method to quantify the complexity of systems. Unfortunately, MSE has a temporal complexity in O(N2) , which is unrealistic for long time series. Moreover, MSE relies on the sample entropy computation which is length-dependent and which leads to large variance and possible undefined entropy values for short time series. Here, we propose and introduce a new multiscale complexity measure, the refined scale-dependent permutation entropy (RSDPE). Through the processing of different kinds of synthetic data and real signals, we show that RSDPE has a behavior close to the one of MSE. Furthermore, RSDPE has a temporal complexity in O(N) . Finally, RSDPE has the advantage of being much less length-dependent than MSE. From all this, we conclude that RSDPE over-performs MSE in terms of computational cost and computational accuracy.

  5. Aircraft assembly shop plant no. 2, view looking east ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Aircraft assembly shop plant no. 2, view looking east - northeast. - Naval Base Philadelphia-Philadelphia Naval Shipyard, Aircraft Assembly Shop Plant, League Island, Philadelphia, Philadelphia County, PA

  6. Roadhouse and shops, from Chicago, Burlington and Quincy Railroad mainline, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Roadhouse and shops, from Chicago, Burlington and Quincy Railroad mainline, facing southeast. - Chicago, Burlington & Quincy Railroad, Roundhouse & Shops, Broadway & Spring Streets, Aurora, Kane County, IL

  7. Roadhouse and shops from the Chicago, Burlington and Quincy railroad ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Roadhouse and shops from the Chicago, Burlington and Quincy railroad mainline, facing northeast - Chicago, Burlington & Quincy Railroad, Roundhouse & Shops, Broadway & Spring Streets, Aurora, Kane County, IL

  8. How to Shop for Health Insurance

    MedlinePlus

    ... to 2-Year-Old How to Shop for Health Insurance KidsHealth > For Parents > How to Shop for Health Insurance A A A What's in this article? Getting ... seguro médico? In America today, we all need health insurance. You do. Your kids do. It's not a " ...

  9. Machine Shop Projects. Instructor Guide. General Information.

    ERIC Educational Resources Information Center

    Westbrook, Raymond E.

    Developed in Georgia, this manual contains 101 projects for use in machine shop courses, arranged according to a suggested machine shop curriculum. Each project, included in a student workbook, contains complete drawings and instructions for implementation. Tasks are listed under the broad headings of measuring, layout, bench work, saws, drilling,…

  10. Machine Shop. Instructor Key. Supplementary Units.

    ERIC Educational Resources Information Center

    Walden, Charles; Cole, Phyllis

    These supplementary units are designed to help students with special needs learn and apply machine shop skills. Nine competencies that are difficult for special needs students to grasp or that would help them get a future job in the field were chosen from the regular machine shop curriculum. Specific objectives for these competencies are listed at…

  11. How to Shop for Health Insurance

    MedlinePlus

    ... to 2-Year-Old How to Shop for Health Insurance KidsHealth > For Parents > How to Shop for Health Insurance Print A A A What's in this article? ... seguro médico? In America today, we all need health insurance. You do. Your kids do. It's not a " ...

  12. Your Shopping Dollar. [Revised.] Money Management.

    ERIC Educational Resources Information Center

    Baran, Nancy H., Ed.; Tarrant, Sharon M., Ed.

    This booklet on shopping, 1 in a series of 12, covers all the basic aspects of personal- and family-money management. Suitable for use by high school and college students as well as adults, this handbook tells how to plan spending, develop shopping skills, and handle consumer problems effectively. Section 1 on consumers and the economy overviews…

  13. Machine Shop. Performance Objectives. Basic Course.

    ERIC Educational Resources Information Center

    Hilton, Arthur; Lambert, George

    Several intermediate performance objectives and corresponding criterion measures are listed for each of 13 terminal objectives for a high school basic machine shop course. The materials were developed for a 36-week course (2 hours daily) designed to enable students to become familiar with the operation of machine shop equipment, to become familiar…

  14. Product Characteristics and Internet Shopping Intentions.

    ERIC Educational Resources Information Center

    Vijayasarathy, Leo R.

    2002-01-01

    Discussion of electronic commerce and online marketing focuses on an empirical study that investigated differences between Internet shopping intentions for products categorized by cost and tangibility. Highlights include hypotheses; respondent characteristics; results that showed that intentions to shop using the Internet differ by tangibility of…

  15. IDENTIFICATION OF BEST INDICATORS OF PEPTIDE-SPECTRUM MATCH USING A PERMUTATION RESAMPLING APPROACH

    PubMed Central

    AKHTAR, MALIK N.; SOUTHEY, BRUCE R.; ANDRÉN, PER E.; SWEEDLER, JONATHAN V.; RODRIGUEZ-ZAS, SANDRA L.

    2014-01-01

    Various indicators of observed-theoretical spectrum matches were compared and the resulting statistical significance was characterized using permutation resampling. Novel decoy databases built by resampling the terminal positions of peptide sequences were evaluated to identify the conditions for accurate computation of peptide match significance levels. The methodology was tested on real and manually curated tandem mass spectra from peptides across a wide range of sizes. Spectra match indicators from complementary database search programs were profiled and optimal indicators were identified. The combination of the optimal indicator and permuted decoy databases improved the calculation of the peptide match significance compared to the approaches currently implemented in the database search programs that rely on distributional assumptions. Permutation tests using p-values obtained from software-dependent matching scores and E-values outperformed permutation tests using all other indicators. The higher overlap in matches between the database search programs when using end permutation compared to existing approaches confirm the superiority of the end permutation method to identify peptides. The combination of effective match indicators and the end permutation method is recommended for accurate detection of peptides. PMID:25362838

  16. The structure of a thermophilic kinase shapes fitness upon random circular permutation

    PubMed Central

    Jones, Alicia M.; Mehta, Manan M.; Thomas, Emily E.; Atkinson, Joshua T.; Segall-Shapiro, Thomas H.; Liu, Shirley; Silberg, Jonathan J.

    2016-01-01

    Proteins can be engineered for synthetic biology through circular permutation, a sequence rearrangement where native protein termini become linked and new termini are created elsewhere through backbone fission. However, it remains challenging to anticipate a protein’s functional tolerance to circular permutation. Here, we describe new transposons for creating libraries of randomly circularly permuted proteins that minimize peptide additions at their termini, and we use transposase mutagenesis to study the tolerance of a thermophilic adenylate kinase (AK) to circular permutation. We find that libraries expressing permuted AK with either short or long peptides amended to their N-terminus yield distinct sets of active variants and present evidence that this trend arises because permuted protein expression varies across libraries. Mapping all sites that tolerate backbone cleavage onto AK structure reveals that the largest contiguous regions of sequence that lack cleavage sites are proximal to the phosphotransfer site. A comparison of our results with a range of structure-derived parameters further showed that retention of function correlates to the strongest extent with the distance to the phosphotransfer site, amino acid variability in an AK family sequence alignment, and residue-level deviations in superimposed AK structures. Our work illustrates how permuted protein libraries can be created with minimal peptide additions using transposase mutagenesis, and they reveal a challenge of maintaining consistent expression across permuted variants in a library that minimizes peptide additions. Furthermore, these findings provide a basis for interpreting responses of thermophilic phosphotransferases to circular permutation by calibrating how different structure-derived parameters relate to retention of function in a cellular selection. PMID:26976658

  17. Easy transition path sampling methods: flexible-length aimless shooting and permutation shooting.

    PubMed

    Mullen, Ryan Gotchy; Shea, Joan-Emma; Peters, Baron

    2015-06-09

    We present new algorithms for conducting transition path sampling (TPS). Permutation shooting rigorously preserves the total energy and momentum of the initial trajectory and is simple to implement even for rigid water molecules. Versions of aimless shooting and permutation shooting that use flexible-length trajectories have simple acceptance criteria and are more computationally efficient than fixed-length versions. Flexible-length permutation shooting and inertial likelihood maximization are used to identify the reaction coordinate for vacancy migration in a two-dimensional trigonal crystal of Lennard-Jones particles. The optimized reaction coordinate eliminates nearly all recrossing of the transition state dividing surface.

  18. Circular permutation of betaB2-crystallin changes the hierarchy of domain assembly.

    PubMed Central

    Wright, G.; Basak, A. K.; Wieligmann, K.; Mayr, E. M.; Slingsby, C.

    1998-01-01

    The betagamma-crystallins form a superfamily of eye lens proteins comprised of multiple Greek motifs that are symmetrically organized into domains and higher assemblies. In the betaB2-crystallin dimer each polypeptide folds into two similar domains that are related to monomeric gamma-crystallin by domain swapping. The crystal structure of the circularly permuted two-domain betaB2 polypeptide shows that permutation converts intermolecular domain pairing into intramolecular pairing. However, the dimeric permuted protein is, in fact, half a native tetramer. This result shows how the sequential order of domains in multi-domain proteins can affect quaternary domain assembly. PMID:9655330

  19. Dermatoses among floral shop workers.

    PubMed

    Thiboutot, D M; Hamory, B H; Marks, J G

    1990-01-01

    Concern about the increasing incidence of hand dermatitis in floral shop workers in the United States and its possible association to the plant Alstroemeria, a flower that has become popular since its introduction in 1981, prompted investigation of the prevalence and cause of hand dermatitis in a sample of floral workers. Fifty-seven floral workers were surveyed, and 15 (26%) reported hand dermatitis within the previous 12 months. Sixteen floral workers (eight with dermatitis) volunteered to be patch tested to the North American Contact Dermatitis Group Standard and Perfume Trays, a series of eight pesticides and 20 plant allergens. Of four of seven floral designers and arrangers who reported hand dermatitis, three reacted positively to patch tests to tuliposide A, the allergen in Alstroemeria. Patch test readings for all other plant extracts were negative. A positive reading for a test to one pesticide, difolatan (Captafol), was noted, the relevance of which is unknown.

  20. Predecessor and permutation existence problems for sequential dynamical systems

    SciTech Connect

    Barrett, C. L.; Hunt, H. B.; Marathe, M. V.; Rosenkrantz, D. J.; Stearns, R. E.

    2002-01-01

    A class of finite discrete dynamical systems, called Sequential Dynamical Systems (SDSs), was introduced in BMR99, BR991 as a formal model for analyzing simulation systems. An SDS S is a triple (G, F,n ),w here (i) G(V,E ) is an undirected graph with n nodes with each node having a state, (ii) F = (fi, fi, . . ., fn), with fi denoting a function associated with node ui E V and (iii) A is a permutation of (or total order on) the nodes in V, A configuration of an SDS is an n-vector ( b l, bz, . . ., bn), where bi is the value of the state of node vi. A single SDS transition from one configuration to another is obtained by updating the states of the nodes by evaluating the function associated with each of them in the order given by n. Here, we address the complexity of two basic problems and their generalizations for SDSs. Given an SDS S and a configuration C, the PREDECESSOR EXISTENCE (or PRE) problem is to determine whether there is a configuration C' such that S has a transition from C' to C. (If C has no predecessor, C is known as a garden of Eden configuration.) Our results provide separations between efficiently solvable and computationally intractable instances of the PRE problem. For example, we show that the PRE problem can be solved efficiently for SDSs with Boolean state values when the node functions are symmetric and the underlying graph is of bounded treewidth. In contrast, we show that allowing just one non-symmetric node function renders the problem NP-complete even when the underlying graph is a tree (which has a treewidth of 1). We also show that the PRE problem is efficiently solvable for SDSs whose state values are from a field and whose node functions are linear. Some of the polynomial algorithms also extend to the case where we want to find an ancestor configuration that precedes a given configuration by a logarithmic number of steps. Our results extend some of the earlier results by Sutner [Su95] and Green [@87] on the complexity of the

  1. Multiscale permutation entropy analysis of EEG recordings during sevoflurane anesthesia

    NASA Astrophysics Data System (ADS)

    Li, Duan; Li, Xiaoli; Liang, Zhenhu; Voss, Logan J.; Sleigh, Jamie W.

    2010-08-01

    Electroencephalogram (EEG) monitoring of the effect of anesthetic drugs on the central nervous system has long been used in anesthesia research. Several methods based on nonlinear dynamics, such as permutation entropy (PE), have been proposed to analyze EEG series during anesthesia. However, these measures are still single-scale based and may not completely describe the dynamical characteristics of complex EEG series. In this paper, a novel measure combining multiscale PE information, called CMSPE (composite multi-scale permutation entropy), was proposed for quantifying the anesthetic drug effect on EEG recordings during sevoflurane anesthesia. Three sets of simulated EEG series during awake, light and deep anesthesia were used to select the parameters for the multiscale PE analysis: embedding dimension m, lag τ and scales to be integrated into the CMSPE index. Then, the CMSPE index and raw single-scale PE index were applied to EEG recordings from 18 patients who received sevoflurane anesthesia. Pharmacokinetic/pharmacodynamic (PKPD) modeling was used to relate the measured EEG indices and the anesthetic drug concentration. Prediction probability (Pk) statistics and correlation analysis with the response entropy (RE) index, derived from the spectral entropy (M-entropy module; GE Healthcare, Helsinki, Finland), were investigated to evaluate the effectiveness of the new proposed measure. It was found that raw single-scale PE was blind to subtle transitions between light and deep anesthesia, while the CMSPE index tracked these changes accurately. Around the time of loss of consciousness, CMSPE responded significantly more rapidly than the raw PE, with the absolute slopes of linearly fitted response versus time plots of 0.12 (0.09-0.15) and 0.10 (0.06-0.13), respectively. The prediction probability Pk of 0.86 (0.85-0.88) and 0.85 (0.80-0.86) for CMSPE and raw PE indicated that the CMSPE index correlated well with the underlying anesthetic effect. The correlation

  2. Looking west at Machine Shop (Bldg. 163) south bay interior. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Looking west at Machine Shop (Bldg. 163) south bay interior. Note the Shaw 15-ton bridge crane. This portion of the building housed machine tools and locomotive component repair functions that supported the erecting shop operations - Atchison, Topeka, Santa Fe Railroad, Albuquerque Shops, Machine Shop, 908 Second Street, Southwest, Albuquerque, Bernalillo County, NM

  3. VIEW NORTH EXTREME LEFTBUILDING 32; MACHINE SHOP (1890) SECOND LEFTBUILDING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW NORTH- EXTREME LEFT-BUILDING 32; MACHINE SHOP (1890) SECOND LEFT-BUILDING 31; RIGGER SHOP (1890) CENTER- BUILDING 28; BLACKSMITH SHOP (1885) CENTER RIGHT-BUILDING 27; PATTERN SHOP (C.1853) RIGHT-BUILDING 40; WIRE WAREHOUSE (1915) - John A. Roebling's Sons Company & American Steel & Wire Company, South Broad, Clark, Elmer, Mott & Hudson Streets, Trenton, Mercer County, NJ

  4. Youth Clothes-Shopping Behavior: An Analysis by Gender.

    ERIC Educational Resources Information Center

    Peters, John F.

    1989-01-01

    Explored possible gender differences in clothes-shopping behavior among adolescents. Findings from 387 college students revealed that: parents financially assisted sons and daughters equally; there was no gender difference in shopping frequency; mothers more frequently shopped with sons than with daughters; fathers rarely shopped with any…

  5. Looking north along east side of roundhouse and shops, superintendent's ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Looking north along east side of roundhouse and shops, superintendent's office at left, taken from the water towers along broadway. Locomotive blacksmith shop in right center distance with car department shops beyond, most likely taken in 1898 - Chicago, Burlington & Quincy Railroad, Roundhouse & Shops, Broadway & Spring Streets, Aurora, Kane County, IL

  6. 48 CFR 252.227-7033 - Rights in shop drawings.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Rights in shop drawings... of Provisions And Clauses 252.227-7033 Rights in shop drawings. As prescribed in 227.7107-(1)(c), use the following clause: Rights in Shop Drawings (APR 1966) (a) Shop drawings for construction...

  7. 1. AERIAL VIEW OF SHOPS COMPLEX LOOKING EAST SHOWING WEST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. AERIAL VIEW OF SHOPS COMPLEX LOOKING EAST SHOWING WEST AND EAST ROUNDHOUSES, FROG AND SWITCH SHOP, AND MACHINE SHOP. - Baltimore & Ohio Railroad, Martinsburg Repair Shops, West Side of Tuscarora Creek Opposite East End of Race Street, Martinsburg, Berkeley County, WV

  8. CAR MACHINE SHOP, FIRST FLOOR, DETAIL OF STEEL COLUMN AND ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    CAR MACHINE SHOP, FIRST FLOOR, DETAIL OF STEEL COLUMN AND BEAM ALTERATION, LOOKING SOUTH. MODIFICATION WAS DONE TO ACCOMMODATE MACHINERY DURING THE BUILDING'S USE AS A WHEEL SHOP. - Southern Pacific, Sacramento Shops, Car Machine Shop, 111 I Street, Sacramento, Sacramento County, CA

  9. Detail of north end of the Electrical Shop (foreground) and ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Detail of north end of the Electrical Shop (foreground) and Sheet Metal Shop, note the metal-frame windows in the Electrical Shop, view facing east - Kahului Cannery, Plant No. 28, Boiler House, Sheet Metal and Electrical Shops, 120 Kane Street, Kahului, Maui County, HI

  10. Circular permutation of a synthetic eukaryotic chromosome with the telomerator

    PubMed Central

    Mitchell, Leslie A.; Boeke, Jef D.

    2014-01-01

    Chromosome engineering is a major focus in the fields of systems biology, genetics, synthetic biology, and the functional analysis of genomes. Here, we describe the “telomerator,” a new synthetic biology device for use in Saccharomyces cerevisiae. The telomerator is designed to inducibly convert circular DNA molecules into mitotically stable, linear chromosomes replete with functional telomeres in vivo. The telomerator cassette encodes convergent yeast telomere seed sequences flanking the I-SceI homing endonuclease recognition site in the center of an intron artificially transplanted into the URA3 selectable/counterselectable auxotrophic marker. We show that inducible expression of the homing endonuclease efficiently generates linear molecules, identified by using a simple plate-based screening method. To showcase its functionality and utility, we use the telomerator to circularly permute a synthetic yeast chromosome originally constructed as a circular molecule, synIXR, to generate 51 linear variants. Many of the derived linear chromosomes confer unexpected phenotypic properties. This finding indicates that the telomerator offers a new way to study the effects of gene placement on chromosomes (i.e., telomere proximity). However, that the majority of synIXR linear derivatives support viability highlights inherent tolerance of S. cerevisiae to changes in gene order and overall chromosome structure. The telomerator serves as an important tool to construct artificial linear chromosomes in yeast; the concept can be extended to other eukaryotes. PMID:25378705

  11. Efficiency and credit ratings: a permutation-information-theory analysis

    NASA Astrophysics Data System (ADS)

    Fernandez Bariviera, Aurelio; Zunino, Luciano; Belén Guercio, M.; Martinez, Lisana B.; Rosso, Osvaldo A.

    2013-08-01

    The role of credit rating agencies has been under severe scrutiny after the subprime crisis. In this paper we explore the relationship between credit ratings and informational efficiency of a sample of thirty nine corporate bonds of US oil and energy companies from April 2008 to November 2012. For this purpose we use a powerful statistical tool, relatively new in the financial literature: the complexity-entropy causality plane. This representation space allows us to graphically classify the different bonds according to their degree of informational efficiency. We find that this classification agrees with the credit ratings assigned by Moody’s. In particular, we detect the formation of two clusters, which correspond to the global categories of investment and speculative grades. Regarding the latter cluster, two subgroups reflect distinct levels of efficiency. Additionally, we also find an intriguing absence of correlation between informational efficiency and firm characteristics. This allows us to conclude that the proposed permutation-information-theory approach provides an alternative practical way to justify bond classification.

  12. Ground states of fermionic lattice Hamiltonians with permutation symmetry

    NASA Astrophysics Data System (ADS)

    Kraus, Christina V.; Lewenstein, Maciej; Cirac, J. Ignacio

    2013-08-01

    We study the ground states of lattice Hamiltonians that are invariant under permutations, in the limit where the number of lattice sites N→∞. For spin systems, these are product states, a fact that follows directly from the quantum de Finetti theorem. For fermionic systems, however, the problem is very different, since mode operators acting on different sites do not commute, but anticommute. We construct a family of fermionic states, F, from which such ground states can be easily computed. They are characterized by few parameters whose number only depends on M, the number of modes per lattice site. We also give an explicit construction for M=1,2. In the first case, F is contained in the set of Gaussian states, whereas in the second it is not. Inspired by that construction, we build a set of fermionic variational wave functions, and apply it to the Fermi-Hubbard model in two spatial dimensions, obtaining results that go beyond the generalized Hartree-Fock theory.

  13. 3. Oblique view of southwest end, Roundhouse Machine Shop Extension, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. Oblique view of southwest end, Roundhouse Machine Shop Extension, Southern Pacific Railroad Carlin Shops, view to north showing the curvature of the end wall that was the common wall with the Roundhouse, and the large metal-clad doors through which steam locomotives were moved into the Machine Shop (135mm lens). - Southern Pacific Railroad, Carlin Shops, Roundhouse Machine Shop Extension, Foot of Sixth Street, Carlin, Elko County, NV

  14. 6. North wall and east end of air brake shop ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. North wall and east end of air brake shop section of roundhouse at center. East end of boiler shop section of roundhouse to the right of air brake shop. East end of blacksmith shop section of roundhouse at far right. View to southeast. - Duluth & Iron Range Rail Road Company Shops, Roundhouse, Southwest of downtown Two Harbors, northwest of Agate Bay, Two Harbors, Lake County, MN

  15. An Optimal Parallel Algorithm for Constructing a Spanning Tree on Circular Permutation Graphs

    NASA Astrophysics Data System (ADS)

    Honma, Hirotoshi; Honma, Saki; Masuyama, Shigeru

    The spanning tree problem is to find a tree that connects all the vertices of G. This problem has many applications, such as electric power systems, computer network design and circuit analysis. Klein and Stein demonstrated that a spanning tree can be found in O(log n) time with O(n + m) processors on the CRCW PRAM. In general, it is known that more efficient parallel algorithms can be developed by restricting classes of graphs. Circular permutation graphs properly contain the set of permutation graphs as a subclass and are first introduced by Rotem and Urrutia. They provided O(n2.376) time recognition algorithm. Circular permutation graphs and their models find several applications in VLSI layout. In this paper, we propose an optimal parallel algorithm for constructing a spanning tree on circular permutation graphs. It runs in O(log n) time with O(n/ log n) processors on the EREW PRAM.

  16. Profiling the Shopping Behavior of Elderly Consumers.

    ERIC Educational Resources Information Center

    Mason, J. Barry; Bearden, William O.

    1978-01-01

    Data were collected by personal interview on shopping roles, information processing, food stamp and coupon use, store brand purchases, mispricing and product unavailability experiences, and with familiarity with fair trade practices. Implications and directions for further research are suggested. (Author)

  17. Shopping Parents: Patient Problem or Professional Problem?

    ERIC Educational Resources Information Center

    Keirn, William C.

    1971-01-01

    A survey of parents of retarded children showed less than 3 per cent of the parents were shopping parents, defined as those who pursue a third professional evaluation after receiving at least two others on previous occasions. (KW)

  18. Accurate Assignment of Significance to Neuropeptide Identifications Using Monte Carlo K-Permuted Decoy Databases

    PubMed Central

    Andrén, Per E.; Sweedler, Jonathan V.; Rodriguez-Zas, Sandra L.

    2014-01-01

    In support of accurate neuropeptide identification in mass spectrometry experiments, novel Monte Carlo permutation testing was used to compute significance values. Testing was based on k-permuted decoy databases, where k denotes the number of permutations. These databases were integrated with a range of peptide identification indicators from three popular open-source database search software (OMSSA, Crux, and X! Tandem) to assess the statistical significance of neuropeptide spectra matches. Significance p-values were computed as the fraction of the sequences in the database with match indicator value better than or equal to the true target spectra. When applied to a test-bed of all known manually annotated mouse neuropeptides, permutation tests with k-permuted decoy databases identified up to 100% of the neuropeptides at p-value < 10−5. The permutation test p-values using hyperscore (X! Tandem), E-value (OMSSA) and Sp score (Crux) match indicators outperformed all other match indicators. The robust performance to detect peptides of the intuitive indicator “number of matched ions between the experimental and theoretical spectra” highlights the importance of considering this indicator when the p-value was borderline significant. Our findings suggest permutation decoy databases of size 1×105 are adequate to accurately detect neuropeptides and this can be exploited to increase the speed of the search. The straightforward Monte Carlo permutation testing (comparable to a zero order Markov model) can be easily combined with existing peptide identification software to enable accurate and effective neuropeptide detection. The source code is available at http://stagbeetle.animal.uiuc.edu/pepshop/MSMSpermutationtesting. PMID:25329667

  19. Food Shopping Behaviors and Exposure to Discrimination

    PubMed Central

    Zenk, Shannon N.; Schulz, Amy J.; Israel, Barbara A.; Mentz, Graciela; Miranda, Patricia Y.; Opperman, Alisha; Odoms-Young, Angela M.

    2013-01-01

    Objective This study examined food shopping behaviors, particularly distance to grocery shop, and exposure to discrimination. Design Cross-sectional observational study utilizing data from a community survey, neighborhood food environment observations, and the decennial census. Setting Three communities in Detroit, Michigan, USA. Subjects Probability sample of 919 African-American, Latino, and White adults in 146 census blocks and 69 census block groups. Results On average, respondents shopped for groceries 3·1 miles from home, with 30·9% shopping within one mile and 22·3% more than five miles from home. Longer distance to shop was associated with being younger, African-American (compared to Latino), a woman, higher socioeconomic status, lower satisfaction with the neighborhood food environment, and living in a neighborhood with higher poverty, without a large grocery store, and farther from the nearest supermarket. African-Americans and those with the lowest incomes were particularly likely to report unfair treatment at food outlets. Each mile increase in distance to shop was associated with a 7% increase in the odds of unfair treatment; this relationship did not differ by race/ethnicity. Conclusions This study suggests that unfair treatment in retail interactions warrants investigation as a pathway by which restricted neighborhood food environments and food shopping behaviors may adversely affect health and contribute to health disparities. Efforts to promote “healthy” and equitable food environments should emphasize local availability and affordability of a range of healthy food products, as well as fair treatment while shopping regardless of race/ethnicity or socioeconomic status. PMID:23534814

  20. Healthful grocery shopping. Perceptions and barriers.

    PubMed

    Hollywood, Lynsey E; Cuskelly, Geraldine J; O'Brien, Michelle; McConnon, Aine; Barnett, Julie; Raats, Monique M; Dean, Moira

    2013-11-01

    While there is evidence of the factors influencing the healthfulness of consumers' food choice, little is known about how consumers perceive the healthfulness of their shopping. This study aimed to explore consumers' perceptions of, and identify barriers to, conducting a healthful shop. Using a qualitative approach, consisting of an accompanied shop and post-shop telephone interview, 50 grocery shoppers were recruited. Results showed that consumers used three criteria to identify a healthful shop: (1) inclusion of healthful foods; (2) avoidance or restriction of particular foods; and (3) achieving a balance between healthful and unhealthful foods. Those who take a balanced approach employ a more holistic approach to their diet while those who avoid or include specific foods may be setting criteria to purchase only certain types of food. The effectiveness of any of these strategies in improving healthfulness is still unclear and requires further investigation. Two barriers to healthful shopping were: (i) lack of self-efficacy in choosing, preparing and cooking healthful foods and (ii) conflicting needs when satisfying self and others. This highlights the need for interventions targeted at building key food skills and for manufacturers to make healthful choices more appealing.

  1. MATC Machine Shop '84: Specific Skill Needs Assessment for Machine Shops in the Milwaukee Area.

    ERIC Educational Resources Information Center

    Roberts, Keith J.

    Building on previous research on the future skill needs of workers in southeastern Wisconsin, a study was conducted at Milwaukee Area Technical College (MATC) to gather information on the machine tool industry in the Milwaukee area. Interviews were conducted by MATC Machine Shop and Tool and Die faculty with representatives from 135 machine shops,…

  2. Electromyographic Permutation Entropy Quantifies Diaphragmatic Denervation and Reinnervation

    PubMed Central

    Kretschmer, Alexander; Lehmeyer, Veronika; Kellermann, Kristine; Schaller, Stephan J.; Blobner, Manfred; Kochs, Eberhard F.; Fink, Heidrun

    2014-01-01

    Spontaneous reinnervation after diaphragmatic paralysis due to trauma, surgery, tumors and spinal cord injuries is frequently observed. A possible explanation could be collateral reinnervation, since the diaphragm is commonly double-innervated by the (accessory) phrenic nerve. Permutation entropy (PeEn), a complexity measure for time series, may reflect a functional state of neuromuscular transmission by quantifying the complexity of interactions across neural and muscular networks. In an established rat model, electromyographic signals of the diaphragm after phrenicotomy were analyzed using PeEn quantifying denervation and reinnervation. Thirty-three anesthetized rats were unilaterally phrenicotomized. After 1, 3, 9, 27 and 81 days, diaphragmatic electromyographic PeEn was analyzed in vivo from sternal, mid-costal and crural areas of both hemidiaphragms. After euthanasia of the animals, both hemidiaphragms were dissected for fiber type evaluation. The electromyographic incidence of an accessory phrenic nerve was 76%. At day 1 after phrenicotomy, PeEn (normalized values) was significantly diminished in the sternal (median: 0.69; interquartile range: 0.66–0.75) and mid-costal area (0.68; 0.66–0.72) compared to the non-denervated side (0.84; 0.78–0.90) at threshold p<0.05. In the crural area, innervated by the accessory phrenic nerve, PeEn remained unchanged (0.79; 0.72–0.86). During reinnervation over 81 days, PeEn normalized in the mid-costal area (0.84; 0.77–0.86), whereas it remained reduced in the sternal area (0.77; 0.70–0.81). Fiber type grouping, a histological sign for reinnervation, was found in the mid-costal area in 20% after 27 days and in 80% after 81 days. Collateral reinnervation can restore diaphragm activity after phrenicotomy. Electromyographic PeEn represents a new, distinctive assessment characterizing intramuscular function following denervation and reinnervation. PMID:25532023

  3. A novel chaos-based bit-level permutation scheme for digital image encryption

    NASA Astrophysics Data System (ADS)

    Fu, Chong; Lin, Bin-bin; Miao, Yu-sheng; Liu, Xiao; Chen, Jun-jie

    2011-11-01

    Confidentiality is an important issue when digital images are transmitted over public networks, and encryption is the most useful technique employed for this purpose. Image encryption is somehow different from text encryption due to some inherent features of image such as bulk data capacity and high correlation among pixels, which are generally difficult to handle by conventional algorithms. Recently, chaos-based encryption has suggested a new and efficient way to deal with the intractable problems of fast and highly secure image encryption. This paper proposes a novel chaos-based bit-level permutation scheme for secure and efficient image cipher. To overcome the drawbacks of conventional permutation-only type image cipher, the proposed scheme introduced a significant diffusion effect in permutation procedure through a two-stage bit-level shuffling algorithm. The two-stage permutation operations are realized by chaotic sequence sorting algorithm and Arnold Cat map, respectively. Results of various types of analysis are interesting and indicate that the security level of the new scheme is competitive with that of permutation-diffusion type image cipher, while the computational complexity is much lower. Therefore the new scheme is a good candidate for real-time secure image communication applications.

  4. A Versatile Platform for Nanotechnology Based on Circular Permutation of a Chaperonin Protein

    NASA Technical Reports Server (NTRS)

    Paavola, Chad; McMillan, Andrew; Trent, Jonathan; Chan, Suzanne; Mazzarella, Kellen; Li, Yi-Fen

    2004-01-01

    A number of protein complexes have been developed as nanoscale templates. These templates can be functionalized using the peptide sequences that bind inorganic materials. However, it is difficult to integrate peptides into a specific position within a protein template. Integrating intact proteins with desirable binding or catalytic activities is an even greater challenge. We present a general method for modifying protein templates using circular permutation so that additional peptide sequence can be added in a wide variety of specific locations. Circular permutation is a reordering of the polypeptide chain such that the original termini are joined and new termini are created elsewhere in the protein. New sequence can be joined to the protein termini without perturbing the protein structure and with minimal limitation on the size and conformation of the added sequence. We have used this approach to modify a chaperonin protein template, placing termini at five different locations distributed across the surface of the protein complex. These permutants are competent to form the double-ring structures typical of chaperonin proteins. The permuted double-rings also form the same assemblies as the unmodified protein. We fused a fluorescent protein to two representative permutants and demonstrated that it assumes its active structure and does not interfere with assembly of chaperonin double-rings.

  5. Women who doctor shop for prescription drugs.

    PubMed

    Worley, Julie; Thomas, Sandra P

    2014-04-01

    Doctor shopping is a term used to describe a form of diversion of prescription drugs when patients visit numerous prescribers to obtain controlled drugs for illicit use. Gender differences exist in regard to prescription drug abuse and methods of diversion. The purpose of this phenomenological study guided by the existential philosophy of Merleau-Ponty was to understand the lived experience of female doctor shoppers. Interviews were conducted with 14 women, which were recorded, transcribed, and analyzed. Included in the findings are figural aspects of the participants' experience of doctor shopping related to the existential grounds of world, time, body, and others. Four themes emerged from the data: (a) feeding the addiction, (b) networking with addicts, (c) playing the system, and (d) baiting the doctors. The findings suggest several measures that nurses can take to reduce the incidence of doctor shopping and to provide better care for female doctor shoppers.

  6. VIEW NORTHEASTCENTERBUILDING 110 CARPENTER SHOP (1908) RIGHTBUILDING 102 ELMER STREET ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW NORTHEAST-CENTER-BUILDING 110 CARPENTER SHOP (1908) RIGHT-BUILDING 102 ELMER STREET ROPE SHOP (1917) - John A. Roebling's Sons Company & American Steel & Wire Company, South Broad, Clark, Elmer, Mott & Hudson Streets, Trenton, Mercer County, NJ

  7. 1. EXTERIOR OF CIVIL ENGINEERING MAINTENANCE SHOP, BUILDING 103, LOOKING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. EXTERIOR OF CIVIL ENGINEERING MAINTENANCE SHOP, BUILDING 103, LOOKING NORTH. - Mill Valley Air Force Station, Civil Engineering Maintenance Shop, East Ridgecrest Boulevard, Mount Tamalpais, Mill Valley, Marin County, CA

  8. 10. Detail of crane over main floor inside machine shop ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. Detail of crane over main floor inside machine shop section of roundhouse. View to southwest. - Duluth & Iron Range Rail Road Company Shops, Roundhouse, Southwest of downtown Two Harbors, northwest of Agate Bay, Two Harbors, Lake County, MN

  9. 22. General view inside air brake shop section of roundhouse. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    22. General view inside air brake shop section of roundhouse. View to west. - Duluth & Iron Range Rail Road Company Shops, Roundhouse, Southwest of downtown Two Harbors, northwest of Agate Bay, Two Harbors, Lake County, MN

  10. 9. General view inside machine shop section of roundhouse. View ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. General view inside machine shop section of roundhouse. View to north. - Duluth & Iron Range Rail Road Company Shops, Roundhouse, Southwest of downtown Two Harbors, northwest of Agate Bay, Two Harbors, Lake County, MN

  11. 21. General view inside boiler shop section of roundhouse. View ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    21. General view inside boiler shop section of roundhouse. View to west. - Duluth & Iron Range Rail Road Company Shops, Roundhouse, Southwest of downtown Two Harbors, northwest of Agate Bay, Two Harbors, Lake County, MN

  12. 20. General view inside blacksmith shop section of roundhouse. View ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    20. General view inside blacksmith shop section of roundhouse. View to northwest. - Duluth & Iron Range Rail Road Company Shops, Roundhouse, Southwest of downtown Two Harbors, northwest of Agate Bay, Two Harbors, Lake County, MN

  13. North side and west end. Machine shop section of roundhouse ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    North side and west end. Machine shop section of roundhouse (MN-99-A) in background. View to southeast - Duluth & Iron Range Rail Road Company Shops, Foundry, Southwest of downtown Two Harbors, northwest of Agate Bay, Two Harbors, Lake County, MN

  14. Rod shop, roof and truss detail showing older pink roof ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Rod shop, roof and truss detail showing older pink roof truss, newer pratt truss, and longitudinal, truss for overhead traveling crane - Chicago, Burlington & Quincy Railroad, Roundhouse & Shops, Broadway & Spring Streets, Aurora, Kane County, IL

  15. View of machine shops (buildings 17 & 19), east along ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View of machine shops (buildings 17 & 19), east along Porter Avenue with quality assurance office (building 121) in foreground. - Naval Base Philadelphia-Philadelphia Naval Shipyard, Machine Shops, League Island, Philadelphia, Philadelphia County, PA

  16. View looking southeast to the Erecting Shop on the corner ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View looking southeast to the Erecting Shop on the corner of Spruce Street and Market Street (similar to HAER No. NJ-3-A-2) - Rogers Locomotive & Machine Works, Erecting Shop, Spruce & Market Streets, Paterson, Passaic County, NJ

  17. 1. SOUTHWEST FRONT AND SOUTHEAST SIDE OF BLACKSMITH SHOP REMAINS, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. SOUTHWEST FRONT AND SOUTHEAST SIDE OF BLACKSMITH SHOP REMAINS, TENANT HOUSE IN BACKGROUND - Mount Etna Iron Works, Blacksmith Shop, East of U.S. Route 22 on T.R. 463, Williamsburg, Blair County, PA

  18. Oblique view of blacksmith shop, showing south and east (front) ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Oblique view of blacksmith shop, showing south and east (front) elevations; camera facing northwest - Lemmon-Anderson-Hixson Ranch, Blacksmith Shop, 11220 North Virginia Street, Reno, Washoe County, NV

  19. Contextual view of blacksmith shop, showing summer kitchen uphill at ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Contextual view of blacksmith shop, showing summer kitchen uphill at left; camera facing northwest - Lemmon-Anderson-Hixson Ranch, Blacksmith Shop, 11220 North Virginia Street, Reno, Washoe County, NV

  20. Oblique view of blacksmith shop, showing north and west (rear) ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Oblique view of blacksmith shop, showing north and west (rear) elevations; camera facing southeast - Lemmon-Anderson-Hixson Ranch, Blacksmith Shop, 11220 North Virginia Street, Reno, Washoe County, NV

  1. INTERIOR VIEW OF MACHINE, METAL AND ELECTRIC SHOPS FROM THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    INTERIOR VIEW OF MACHINE, METAL AND ELECTRIC SHOPS FROM THE ELECTRIC SHOP. RAILROAD TRACKS IN FLOOR. VIEW FROM THE WEST - Kekaha Sugar Company, Sugar Mill Building, 8315 Kekaha Road, Kekaha, Kauai County, HI

  2. West end view, "Boat Shop" open doorway, Facility 7 ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    West end view, "Boat Shop" - open doorway, Facility 7 connected on the left, view facing east-southeast - U.S. Naval Base, Pearl Harbor, Boat Shop, Seventh Street near Avenue E, Pearl City, Honolulu County, HI

  3. First roundhouse and shops. Photograph taken between 1874 and 1878, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    First roundhouse and shops. Photograph taken between 1874 and 1878, at the same time as IL-8-78. Looking north - Chicago, Burlington & Quincy Railroad, Roundhouse & Shops, Broadway & Spring Streets, Aurora, Kane County, IL

  4. 17. BIRD'S EYE VIEW OF FABRICATING SHOP FROM THE HOMESTEAD ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    17. BIRD'S EYE VIEW OF FABRICATING SHOP FROM THE HOMESTEAD HIGH LEVEL BRIDGE. Jet Lowe, Photographer, 1989. - U.S. Steel Homestead Works, Auxiliary Buildings & Shops, Along Monongahela River, Homestead, Allegheny County, PA

  5. INTERIOR OF CENTRAL ROOM OF PAINT SHOP PORTION OF BUILDING, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    INTERIOR OF CENTRAL ROOM OF PAINT SHOP PORTION OF BUILDING, FACING SOUTHEAST - Vancouver Barracks, Paint Shop and Central Heating Plant, East Fifth Street southeast of McLoughlin Road, Vancouver, Clark County, WA

  6. 9. Interior view looking E on second floor Paint Shop. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. Interior view looking E on second floor Paint Shop. - Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, Paint & Coach Barn, Bounded by West Broad, Jones, West Boundary & Hull Streets, Savannah, Chatham County, GA

  7. 10. Boiler Works, Machine Shop and Pattern Storage, to right; ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. Boiler Works, Machine Shop and Pattern Storage, to right; Hose House and Paint Storage, to left; Headhouses, left center; Pipe, Paint, and Electrical Shop center. - Thames Tow Boat Company, Foot of Farnsworth Street, New London, New London County, CT

  8. INTERIOR OF EASTERN ROOM OF PAINT SHOP PORTION OF BUILDING, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    INTERIOR OF EASTERN ROOM OF PAINT SHOP PORTION OF BUILDING, FACING SOUTHWEST - Vancouver Barracks, Paint Shop and Central Heating Plant, East Fifth Street southeast of McLoughlin Road, Vancouver, Clark County, WA

  9. 2. Oil House, Southern Pacific Railroad Carlin Shops, northwest elevation, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. Oil House, Southern Pacific Railroad Carlin Shops, northwest elevation, view to southeast (135mm lens). - Southern Pacific Railroad, Carlin Shops, Oil House, Foot of Sixth Street, Carlin, Elko County, NV

  10. 4. Oil House, Southern Pacific Railroad Carlin Shops, southeast elevation, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    4. Oil House, Southern Pacific Railroad Carlin Shops, southeast elevation, view to northwest (90mm lens). - Southern Pacific Railroad, Carlin Shops, Oil House, Foot of Sixth Street, Carlin, Elko County, NV

  11. 1. Oil House, Southern Pacific Railroad Carlin Shops, southwest facade, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. Oil House, Southern Pacific Railroad Carlin Shops, southwest facade, view to northeast (135mm lens). - Southern Pacific Railroad, Carlin Shops, Oil House, Foot of Sixth Street, Carlin, Elko County, NV

  12. 33. GENERAL VIEW OF SHOPS COMPLEX LOOKING EAST, PAYMASTER'S OFFICE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    33. GENERAL VIEW OF SHOPS COMPLEX LOOKING EAST, PAYMASTER'S OFFICE IN FOREGROUND, LEFT; PUMPHOUSE, CENTER; SHOPS BUILDING TO RIGHT; SHEDS, FAR RIGHT - Soudan Iron Mine, Tower-Soudan State Park, Tower, St. Louis County, MN

  13. 14. AERIAL VIEW OF ENGINE DISPLAY INSIDE PASSENGER CAR SHOP ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    14. AERIAL VIEW OF ENGINE DISPLAY INSIDE PASSENGER CAR SHOP (NOW A TRANSPORTATION MUSEUM) - Baltimore & Ohio Railroad, Mount Clare Passenger Car Shop, Southwest corner of Pratt & Poppleton Streets, Baltimore, Independent City, MD

  14. 3. GENERAL VIEW OF PASSENGER CAR SHOP; RAILROAD TRACKS IN ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. GENERAL VIEW OF PASSENGER CAR SHOP; RAILROAD TRACKS IN FOREGROUND - Baltimore & Ohio Railroad, Mount Clare Passenger Car Shop, Southwest corner of Pratt & Poppleton Streets, Baltimore, Independent City, MD

  15. 11. VIEW OF CIRCULAR CAR SHOP OVER TOPS OF BOX ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    11. VIEW OF CIRCULAR CAR SHOP OVER TOPS OF BOX CARS LOOKING NORTHEAST. - Baltimore & Ohio Railroad, Mount Clare Shops, South side of Pratt Street between Carey & Poppleton Streets, Baltimore, Independent City, MD

  16. Western view of coupling blank building, with general machine shop ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Western view of coupling blank building, with general machine shop and pattern shop on left. - U.S. Steel National Tube Works, Auxiliary Buildings, Along Monongahela River, McKeesport, Allegheny County, PA

  17. Interior view of the Sheet Metal Shop showing the roof ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Interior view of the Sheet Metal Shop showing the roof trusses and corrugated metal roof covering, view facing northwest - Kahului Cannery, Plant No. 28, Boiler House, Sheet Metal and Electrical Shops, 120 Kane Street, Kahului, Maui County, HI

  18. 11. Interior view, second floor, tin shop area looking southwest, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    11. Interior view, second floor, tin shop area looking southwest, showing laminated plank arched roof trusses. - Larrabee & Hingston Company, Main Shop Building, 19 Howley Street, Peabody, Essex County, MA

  19. 8. MACHINE SHOP, INTERIOR, LOOKING AT ROOF TRUSS SYSTEM. NOTE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. MACHINE SHOP, INTERIOR, LOOKING AT ROOF TRUSS SYSTEM. NOTE DECORATIVE WOOD COLUMN AT LOWER LEFT. - Baltimore & Ohio Railroad, Keyser Machine Shop, State Route 46 Northwest of Spring Street, Keyser, Mineral County, WV

  20. Boiler & Tank Shop, north elevation. The Pittsburgh, Chartiers & ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Boiler & Tank Shop, north elevation. The Pittsburgh, Chartiers & Youghiogheny Railway (PC&Y) bridge is at far right. - Pittsburgh & Lake Erie Railroad, Locomotive Repair Shops, River Road at Chartiers Avenue, McKees Rocks, Allegheny County, PA

  1. Quality assurance in small plating shops

    SciTech Connect

    McNabb, W.J. )

    1993-10-01

    The potential for electroless nickel coatings in oilfield and petrochemical applications is quite high. The greatest obstacle to their use has been a reputation for poor quality due to a lack of quality control in many plating shops. To overcome this, electroless nickel shops should not only have a quality control program in their operation, but must also document its use and success. This article describes how a plating shoe can develop the necessary procedures, manuals, and paperwork trail to offer quality assurance and to satisfy customers.

  2. Multiple comparisons permutation test for image based data mining in radiotherapy.

    PubMed

    Chen, Chun; Witte, Marnix; Heemsbergen, Wilma; van Herk, Marcel

    2013-12-23

    : Comparing incidental dose distributions (i.e. images) of patients with different outcomes is a straightforward way to explore dose-response hypotheses in radiotherapy. In this paper, we introduced a permutation test that compares images, such as dose distributions from radiotherapy, while tackling the multiple comparisons problem. A test statistic Tmax was proposed that summarizes the differences between the images into a single value and a permutation procedure was employed to compute the adjusted p-value. We demonstrated the method in two retrospective studies: a prostate study that relates 3D dose distributions to failure, and an esophagus study that relates 2D surface dose distributions of the esophagus to acute esophagus toxicity. As a result, we were able to identify suspicious regions that are significantly associated with failure (prostate study) or toxicity (esophagus study). Permutation testing allows direct comparison of images from different patient categories and is a useful tool for data mining in radiotherapy.

  3. Analysis of p300/CBP histone acetyltransferase regulation using circular permutation and semisynthesis.

    PubMed

    Karukurichi, Kannan R; Wang, Ling; Uzasci, Lerna; Manlandro, Cara Marie; Wang, Qing; Cole, Philip A

    2010-02-03

    The histone acetyltransferase (HAT) p300/CBP has been shown to undergo autoacetylation on lysines in an apparent regulatory loop that stimulates HAT activity. Here we have developed a strategy to introduce acetyl-Lys at up to six known modification sites in p300/CBP HAT using a combination of circular permutation and expressed protein ligation. We show that these semisynthetic, circularly permuted acetylated proteins retain high affinity for an acetyl-CoA substrate analogue and that HAT activity correlates positively with degree of acetylation. This study provides novel evidence for control of p300/CBP HAT activity by site-specific autoacetylation and outlines a potentially general strategy for using expressed protein ligation and circular permutation to chemically interrogate internal regions of proteins.

  4. Permutational distribution of the log-rank statistic under random censorship with applications to carcinogenicity assays.

    PubMed

    Heimann, G; Neuhaus, G

    1998-03-01

    In the random censorship model, the log-rank test is often used for comparing a control group with different dose groups. If the number of tumors is small, so-called exact methods are often applied for computing critical values from a permutational distribution. Two of these exact methods are discussed and shown to be incorrect. The correct permutational distribution is derived and studied with respect to its behavior under unequal censoring in the light of recent results proving that the permutational version and the unconditional version of the log-rank test are asymptotically equivalent even under unequal censoring. The log-rank test is studied by simulations of a realistic scenario from a bioassay with small numbers of tumors.

  5. Security enhanced optical encryption system by random phase key and permutation key.

    PubMed

    He, Mingzhao; Tan, Qiaofeng; Cao, Liangcai; He, Qingsheng; Jin, Guofan

    2009-12-07

    Conventional double random phase encoding (DRPE) encrypts plaintext to white noise-like ciphertext which may attract attention of eavesdroppers, and recent research reported that DRPE is vulnerable to various attacks. Here we propose a security enhanced optical encryption system that can hide the existence of secret information by watermarking. The plaintext is encrypted using iterative fractional Fourier transform with random phase key, and ciphertext is randomly permuted with permutation key before watermarking. Cryptanalysis shows that linearity of the security system has been broken and the permutation key prevent the attacker from accessing the ciphertext in various attacks. A series of simulations have shown the effectiveness of this system and the security strength is enhanced for invisibility, nonlinearity and resistance against attacks.

  6. A rewired green fluorescent protein: folding and function in a nonsequential, noncircular GFP permutant.

    PubMed

    Reeder, Philippa J; Huang, Yao-Ming; Dordick, Jonathan S; Bystroff, Christopher

    2010-12-28

    The sequential order of secondary structural elements in proteins affects the folding and activity to an unknown extent. To test the dependence on sequential connectivity, we reconnected secondary structural elements by their solvent-exposed ends, permuting their sequential order, called "rewiring". This new protein design strategy changes the topology of the backbone without changing the core side chain packing arrangement. While circular and noncircular permutations have been observed in protein structures that are not related by sequence homology, to date no one has attempted to rationally design and construct a protein with a sequence that is noncircularly permuted while conserving three-dimensional structure. Herein, we show that green fluorescent protein can be rewired, still functionally fold, and exhibit wild-type fluorescence excitation and emission spectra.

  7. A Noncommutative de Finetti Theorem: Invariance under Quantum Permutations is Equivalent to Freeness with Amalgamation

    NASA Astrophysics Data System (ADS)

    Köstler, Claus; Speicher, Roland

    2009-10-01

    We show that the classical de Finetti theorem has a canonical noncommutative counterpart if we strengthen “exchangeability” (i.e., invariance of the joint distribution of the random variables under the action of the permutation group) to invariance under the action of the quantum permutation group. More precisely, for an infinite sequence of noncommutative random variables {(x_i)_{iinmathbb{N}}} , we prove that invariance of the joint distribution of the x i ’s under quantum permutations is equivalent to the fact that the x i ’s are identically distributed and free with respect to the conditional expectation onto the tail algebra of the x i ’s.

  8. Multiple comparisons permutation test for image based data mining in radiotherapy

    PubMed Central

    2013-01-01

    Comparing incidental dose distributions (i.e. images) of patients with different outcomes is a straightforward way to explore dose-response hypotheses in radiotherapy. In this paper, we introduced a permutation test that compares images, such as dose distributions from radiotherapy, while tackling the multiple comparisons problem. A test statistic Tmax was proposed that summarizes the differences between the images into a single value and a permutation procedure was employed to compute the adjusted p-value. We demonstrated the method in two retrospective studies: a prostate study that relates 3D dose distributions to failure, and an esophagus study that relates 2D surface dose distributions of the esophagus to acute esophagus toxicity. As a result, we were able to identify suspicious regions that are significantly associated with failure (prostate study) or toxicity (esophagus study). Permutation testing allows direct comparison of images from different patient categories and is a useful tool for data mining in radiotherapy. PMID:24365155

  9. Estimation of false discovery rate using sequential permutation p-values.

    PubMed

    Bancroft, Tim; Du, Chuanlong; Nettleton, Dan

    2013-03-01

    We consider the problem of testing each of m null hypotheses with a sequential permutation procedure in which the number of draws from the permutation distribution of each test statistic is a random variable. Each sequential permutation p-value has a null distribution that is nonuniform on a discrete support. We show how to use a collection of such p-values to estimate the number of true null hypotheses m0 among the m null hypotheses tested and how to estimate the false discovery rate (FDR) associated with p-value significance thresholds. We use real data analyses and simulation studies to evaluate and illustrate the performance of our proposed approach relative to standard, more computationally intensive strategies. We find that our sequential approach produces similar results with far less computational expense in a variety of scenarios.

  10. 8. VIEW OF THE MACHINE SHOP. BY 1966, THE MACHINE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. VIEW OF THE MACHINE SHOP. BY 1966, THE MACHINE SHOP HANDLED PRIMARILY STAINLESS STEEL COMPONENTS, WHICH WERE SENT TO THE MACHINE SHOP TO BE FORMED INTO THEIR FINAL SHAPES. (7/24/70) - Rocky Flats Plant, General Manufacturing, Support, Records-Central Computing, Southern portion of Plant, Golden, Jefferson County, CO

  11. 7. South wall of blacksmith shop section of roundhouse at ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. South wall of blacksmith shop section of roundhouse at left. West wall and south end wall of machine shop section of roundhouse at right. View to northeast. - Duluth & Iron Range Rail Road Company Shops, Roundhouse, Southwest of downtown Two Harbors, northwest of Agate Bay, Two Harbors, Lake County, MN

  12. VIEW NORTHFOREGROUNDBUILDING 121 TEMPERING SHOP NO. 2 (1944) LEFT (LARGE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW NORTH-FOREGROUND-BUILDING 121 TEMPERING SHOP NO. 2 (1944) LEFT (LARGE WINDOW-BUILDING 54 FLAT SHOP 3A (1954) CENTER TOP-BUILDING 58-TEMPERING SHOP NO. 1 (c.1910) RIGHT-BUILDING 119-WIRE STORAGE (c.1945) - John A. Roebling's Sons Company & American Steel & Wire Company, South Broad, Clark, Elmer, Mott & Hudson Streets, Trenton, Mercer County, NJ

  13. Standardized Curriculum for Machine Tool Operation/Machine Shop.

    ERIC Educational Resources Information Center

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

    Standardized vocational education course titles and core contents for two courses in Mississippi are provided: machine tool operation/machine shop I and II. The first course contains the following units: (1) orientation; (2) shop safety; (3) shop math; (4) measuring tools and instruments; (5) hand and bench tools; (6) blueprint reading; (7)…

  14. 1. Photocopy of photograph of Blacksmith Shop. Original on file ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. Photocopy of photograph of Blacksmith Shop. Original on file with the Payette National Forest, Supervisor's Office, McCall, Idaho. BLACKSMITH SHOP CA. 1935, FACING NORTH. BARN IS IN BACKGROUND. - Hornet Ranger Station, Blacksmith Shop, Forest Service Road No. 50002, Council, Adams County, ID

  15. 14. BLACKSMITH SHOP IN THE CENTER OF PHOTOGRAPH. TO THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    14. BLACKSMITH SHOP IN THE CENTER OF PHOTOGRAPH. TO THE LEFT IS MACHINE SHOP No. 1, AND TO THE RIGHT IS THE CHIPPING YARD. THE RUINS IN THE FOREGROUND IS THE FORMER ELECTRIC DEPARTMENT. Jet Lowe, Photographer, 1989. - U.S. Steel Homestead Works, Auxiliary Buildings & Shops, Along Monongahela River, Homestead, Allegheny County, PA

  16. 61. August 1974. PAINT SHOP, VIEW LOOKING EAST. THE WINDOW ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    61. August 1974. PAINT SHOP, VIEW LOOKING EAST. THE WINDOW IS IN THE CENTER OF A SLIDING DOOR THAT OPENS ONTO THE PORCH AT THE EAST END OF THE ORIGINAL 1883 SHOP. THE DOOR WAS USED FOR HAULING THE WAGONS UP TO THE PAINT SHOP. - Gruber Wagon Works, Pennsylvania Route 183 & State Hill Road at Red Bridge Park, Bernville, Berks County, PA

  17. 1. THREEQUARTER VIEW OF MECHANICAL SHOP, SHOWING EAST AND NORTH ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. THREE-QUARTER VIEW OF MECHANICAL SHOP, SHOWING EAST AND NORTH SIDES; LOOKING SOUTHWEST; POWER PLANT IN BACKGROUND AT RIGHT; SAWTOOTH MONITORS ON BEEF KILL (BUILDING 149) VISIBLE ABOVE SHOP BUILDING AT CENTER OF PHOTO - Rath Packing Company, Mechanical Shop, Sycamore Street between Elm & Eighteenth Streets, Waterloo, Black Hawk County, IA

  18. View north of tube bending shop in boilermakers department located ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View north of tube bending shop in boilermakers department located in southeast corner of the structural shop building (building 57). The computer controlled tube bender can be programmed to bend boiler tubing to nearly any required configuration - Naval Base Philadelphia-Philadelphia Naval Shipyard, Structure Shop, League Island, Philadelphia, Philadelphia County, PA

  19. VIEW OF TURNTABLE, WITH CAR MACHINE SHOP AND PLANING MILL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF TURNTABLE, WITH CAR MACHINE SHOP AND PLANING MILL IN THE BACKGROUND AND ERECTING/MACHINE SHOP AT RIGHT, LOOKING EAST. ATSF 5021 2-10-4 STEAM LOCOMOTIVE IS ON TURNTABLE. - Southern Pacific, Sacramento Shops, 111 I Street, Sacramento, Sacramento County, CA

  20. Shopping Centers: Their Development and Impact on a Community.

    ERIC Educational Resources Information Center

    Berezowski, P. E.; And Others

    Presenting extensive background material on the development of shopping centers, this paper includes elementary and junior high school outdoor education activities centering upon shopping center studies. Background material includes analysis of the following: shopping center types (architecture, regional location, etc); land use (guidelines for…

  1. Internet Shopping Behavior of College of Education Students

    ERIC Educational Resources Information Center

    Kiyici, Mubin

    2012-01-01

    Internet is an important facilitator for human and humans use this medium almost every phase. As a shopping medium, internet attract human so attract researcher. Younger people can adapt newer technologies so they can adapt internet as shopping tool. In this research it is tried to define college of education students' online shopping behavior and…

  2. PERSPECTIVE VIEW OF THE Erection Shop FROM THE northeast. The ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    PERSPECTIVE VIEW OF THE Erection Shop FROM THE northeast. The Power House can be seen in shadow on the left, and the Boiler & Tank Shop is to the far right. - Pittsburgh & Lake Erie Railroad, Locomotive Repair Shops, River Road at Chartiers Avenue, McKees Rocks, Allegheny County, PA

  3. Communication between RNA folding domains revealed by folding of circularly permuted ribozymes.

    PubMed

    Lease, Richard A; Adilakshmi, Tadepalli; Heilman-Miller, Susan; Woodson, Sarah A

    2007-10-12

    To study the role of sequence and topology in RNA folding, we determined the kinetic folding pathways of two circularly permuted variants of the Tetrahymena group I ribozyme, using time-resolved hydroxyl radical footprinting. Circular permutation changes the distance between interacting residues in the primary sequence, without changing the native structure of the RNA. In the natural ribozyme, tertiary interactions in the P4-P6 domain form in 1 s, while interactions in the P3-P9 form in 1-3 min at 42 degrees C. Permutation of the 5' end to G111 in the P4 helix allowed the stable P4-P6 domain to fold in 200 ms at 30 degrees C, five times faster than in the wild-type RNA, while the other domains folded five times more slowly (5-8 min). By contrast, circular permutation of the 5' end to G303 in J8/7 decreased the folding rate of the P4-P6 domain. In this permuted RNA, regions joining P2, P3 and P4 were protected in 500 ms, while the P3-P9 domain was 60-80% folded within 30 s. RNase T(1) digestion and FMN photocleavage showed that circular permutation of the RNA sequence alters the initial ensemble of secondary structures, thereby changing the tertiary folding pathways. Our results show that the natural 5'-to-3' order of the structural domains in group I ribozymes optimizes structural communication between tertiary domains and promotes self-assembly of the catalytic center.

  4. Cluster: Metals. Course: Machine Shop. Research Project.

    ERIC Educational Resources Information Center

    Sanford - Lee County Schools, NC.

    The set of 13 units is designed for use with an instructor in actual machine shop practice and is also keyed to audio visual and textual materials. Each unit contains a series of task packages which: specify prerequisites within the series (minimum is Unit 1); provide a narrative rationale for learning; list both general and specific objectives in…

  5. 30 CFR 57.4761 - Underground shops.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND NONMETAL MINE SAFETY AND HEALTH SAFETY AND HEALTH STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Fire Prevention and... toxic gases from a fire originating in an underground shop where maintenance work is routinely done...

  6. Performance Support on the Shop Floor.

    ERIC Educational Resources Information Center

    Kasvi, Jyrki J. J.; Vartiainen, Matti

    2000-01-01

    Discussion of performance support on the shop floor highlights four support systems for assembly lines that incorporate personal computer workstations in local area networks and use multimedia documents. Considers new customer-focused production paradigms; organizational learning; knowledge development; and electronic performance support systems…

  7. Where Students Shop for Nutrition Facts.

    ERIC Educational Resources Information Center

    Teaching PreK-8, 1995

    1995-01-01

    Describes a school tour launched by a supermarket to familiarize children with basic facts about nutrition and healthful eating. Discusses visits to a perishable foods department, a shopping activity, a recipe preparation activity, and Food Pyramid activity. Suggests making enquiries about such tours with local supermarket chains and bringing it…

  8. Designing a Shopping System for Senior Citizens

    ERIC Educational Resources Information Center

    Roman, Harry T.

    2010-01-01

    It is all about serving the customer. That is how capitalism plays out. It finds a market need and then creates a product or service to address that need. The Baby Boomer generation, all 76 million, will be retiring soon. Eventually, some may find it very hard to move about and do their routine food shopping. In this article, the author's…

  9. Industrial Arts Curriculum Guide for General Shop.

    ERIC Educational Resources Information Center

    Hubachek, Carl H.; And Others

    This curriculum guide for general shop courses is part of a series of curriculum guides for use in the industrial arts curriculum in Connecticut. The guide provides information on the scope and sequence of the industrial arts curriculum, specific guidelines for industrial arts, program goals and objectives, and guidelines concerning special…

  10. Organizational Learning in Shop Floor Level

    ERIC Educational Resources Information Center

    Cheung, Che Keung; Geng, Shuang; Chuah, Kong Bieng; Chau, Yiu Chung; Kwong, Kar Fai

    2016-01-01

    Purpose: This paper aims to present the result of the pilot run of a research project which aims at evaluating the applicability of project-based action learning (PAL) to shop floor organizational learning (OL) component in a manufacturing company in Dongguan, China. How the PAL framework was introduced and implemented is described. The factors…

  11. School Shop Development: Research and Planning.

    ERIC Educational Resources Information Center

    Rockwell Manufacturing Co., Pittsburgh, PA.

    This facility planning guide was developed by a commercial firm for use by school personnel in planning and equiping industrial education shops. It is based on an analysis of reports made by the company's 150 field representatives and information furnished by school administrators and architects. Five fundamental planning concepts and a cycle of…

  12. The Great Irish Head Shop Controversy

    ERIC Educational Resources Information Center

    Ryall, Graham; Butler, Shane

    2011-01-01

    This research describes and analyses recent policy developments in Ireland in relation to the practice of selling psychoactive substances which, while not themselves illegal, mimic the effects of commonly used illegal drugs. These so-called "legal highs" had been sold in Ireland through an increasing number of "head shops"…

  13. Utah Integrated Shop Program. Final Report.

    ERIC Educational Resources Information Center

    Loveless, Austin G.

    To evaluate the Utah State Board of Education's Integrated Shop Program (ISP) for small rural high schools, 7 ISP schools in their 2nd year (1970-71) of the ISP were compared on 3 measures to 2 selected control schools (small rural high schools that offered vocational agricultural mechanics and industrial arts but did not offer formal courses in…

  14. Secret Shopping as User Experience Assessment Tool

    ERIC Educational Resources Information Center

    Boyce, Crystal M.

    2015-01-01

    Secret shopping is a form of unobtrusive evaluation that can be accomplished with minimal effort, but still produce rich results. With as few as 11 shoppers, the author was able to identify trends in user satisfaction with services provided across two entry-level desks at Illinois Wesleyan University's The Ames Library. The focus of this secret…

  15. Online versus conventional shopping: consumers' risk perception and regulatory focus.

    PubMed

    van Noort, Guda; Kerkhof, Peter; Fennis, Bob M

    2007-10-01

    In two experiments, the impact of shopping context on consumers' risk perceptions and regulatory focus was examined. We predicted that individuals perceive an online (vs. conventional) shopping environment as more risky and that an online shopping environment, by its risky nature, primes a prevention focus. The findings in Study 1 demonstrate these effects by using self-report measures for risk perception and prevention focus. In Study 2, we replicated these findings and demonstrated that the effect of an online shopping environment carries over to behavior in a domain unrelated to shopping.

  16. Permutation and parametric tests for effect sizes in voxel-based morphometry of gray matter volume in brain structural MRI.

    PubMed

    Dickie, David A; Mikhael, Shadia; Job, Dominic E; Wardlaw, Joanna M; Laidlaw, David H; Bastin, Mark E

    2015-12-01

    Permutation testing has been widely implemented in voxel-based morphometry (VBM) tools. However, this type of non-parametric inference has yet to be thoroughly compared with traditional parametric inference in VBM studies of brain structure. Here we compare both types of inference and investigate what influence the number of permutations in permutation testing has on results in an exemplar study of how gray matter proportion changes with age in a group of working age adults. High resolution T1-weighted volume scans were acquired from 80 healthy adults aged 25-64years. Using a validated VBM procedure and voxel-based permutation testing for Pearson product-moment coefficient, the effect sizes of changes in gray matter proportion with age were assessed using traditional parametric and permutation testing inference with 100, 500, 1000, 5000, 10000 and 20000 permutations. The statistical significance was set at P<0.05 and false discovery rate (FDR) was used to correct for multiple comparisons. Clusters of voxels with statistically significant (PFDR<0.05) declines in gray matter proportion with age identified with permutation testing inference (N≈6000) were approximately twice the size of those identified with parametric inference (N=3221voxels). Permutation testing with 10000 (N=6251voxels) and 20000 (N=6233voxels) permutations produced clusters that were generally consistent with each other. However, with 1000 permutations there were approximately 20% more statistically significant voxels (N=7117voxels) than with ≥10000 permutations. Permutation testing inference may provide a more sensitive method than traditional parametric inference for identifying age-related differences in gray matter proportion. Based on the results reported here, at least 10000 permutations should be used in future univariate VBM studies investigating age related changes in gray matter to avoid potential false findings. Additional studies using permutation testing in large imaging databanks

  17. Permutation and parametric tests for effect sizes in voxel-based morphometry of grey matter volume in brain structural MRI

    PubMed Central

    Dickie, David A.; Mikhael, Shadia; Job, Dominic E.; Wardlaw, Joanna M.; Laidlaw, David H.; Bastin, Mark E.

    2015-01-01

    Permutation testing has been widely implemented in voxel-based morphometry (VBM) tools. However, this type of non-parametric inference has yet to be thoroughly compared with traditional parametric inference in VBM studies of brain structure. Here we compare both types of inference and investigate what influence the number of permutations in permutation testing has on results in an exemplar study of how grey matter proportion changes with age in a group of working age adults. High resolution T1-weighted volume scans were acquired from 80 healthy adults aged 25–64 years. Using a validated VBM procedure and voxel-based permutation testing for Pearson product-moment coefficient, the effect sizes of changes in grey matter proportion with age were assessed using traditional parametric and permutation testing inference with 100, 500, 1000, 5000, 10000 and 20000 permutations. The statistical significance was set at P < 0.05 and false discovery rate (FDR) used to correct for multiple comparisons. Clusters of voxels with statistically significant (PFDR < 0.05) declines in grey matter proportion with age identified with permutation testing inference (N ≈ 6000) were approximately twice the size of those identified with parametric inference (N = 3221 voxels). Permutation testing with 10000 (N = 6251 voxels) and 20000 (N = 6233 voxels) permutations produced clusters that were generally consistent with each other. However, with ≥ 1000 permutations there were approximately 20% more statistically significant voxels (N = 7117 voxels) than with 10000 permutations. Permutation testing inference may provide a more sensitive method than traditional parametric inference for identifying age-related differences in grey matter proportion. Based on the results reported here, at least 10000 permutations should be used in future univariate VBM studies investigating age related changes in grey matter to avoid potential false findings. Additional studies using permutation testing in large

  18. Educational Facilities Thesaurus. Permuted Descriptor List, 1981. Report Studies...S.81.

    ERIC Educational Resources Information Center

    United Nations Educational, Scientific, and Cultural Organization, Paris (France). Div. of Educational Policy and Planning.

    Some 2,500 descriptors dealing with the planning and design of educational buildings and equipment are included in this permuted index which was developed by the architects of the United Nations Educational, Scientific, and Cultural Organization's (Unesco's) Educational Facilities Section, the Unesco Regional Offices Educational Facilities units,…

  19. An improved permutation-diffusion type image cipher with a chaotic orbit perturbing mechanism.

    PubMed

    Chen, Jun-xin; Zhu, Zhi-liang; Fu, Chong; Yu, Hai

    2013-11-18

    During the past decades, chaos-based permutation-diffusion type image cipher has been widely investigated to meet the increasing demand for real-time secure image transmission over public networks. However, the existing researches almost exclusively focus on the improvements of the permutation and diffusion methods independently, without consideration of cooperation between the two processes. In this paper, an improved permutation-diffusion type image cipher with a chaotic orbit perturbing mechanism is proposed. In the permutation stage, pixels in the plain image are shuffled with a pixel-swapping mechanism, and the pseudorandom locations are generated by chaotic logistic map iteration. Furthermore, a plain pixel related chaotic orbit perturbing mechanism is introduced. As a result, a tiny change in plain image will be spread out during the confusion process, and hence an effective diffusion effect is introduced. By using a reverse direction diffusion method, the introduced diffusion effect will be further diffused to the whole cipher image within one overall encryption round. Simulation results and extensive cryptanalysis justify that the proposed scheme has a satisfactory security with a low computational complexity, which renders it a good candidate for real-time secure image storage and distribution applications.

  20. A note on permutation tests of significance for multiple regression coefficients.

    PubMed

    Long, Michael A; Berry, Kenneth J; Mielke, Paul W

    2007-04-01

    In the vast majority of psychological research utilizing multiple regression analysis, asymptotic probability values are reported. This paper demonstrates that asymptotic estimates of standard errors provided by multiple regression are not always accurate. A resampling permutation procedure is used to estimate the standard errors. In some cases the results differ substantially from the traditional least squares regression estimates.

  1. A studentized permutation test for three-arm trials in the 'gold standard' design.

    PubMed

    Mütze, Tobias; Konietschke, Frank; Munk, Axel; Friede, Tim

    2017-03-15

    The 'gold standard' design for three-arm trials refers to trials with an active control and a placebo control in addition to the experimental treatment group. This trial design is recommended when being ethically justifiable and it allows the simultaneous comparison of experimental treatment, active control, and placebo. Parametric testing methods have been studied plentifully over the past years. However, these methods often tend to be liberal or conservative when distributional assumptions are not met particularly with small sample sizes. In this article, we introduce a studentized permutation test for testing non-inferiority and superiority of the experimental treatment compared with the active control in three-arm trials in the 'gold standard' design. The performance of the studentized permutation test for finite sample sizes is assessed in a Monte Carlo simulation study under various parameter constellations. Emphasis is put on whether the studentized permutation test meets the target significance level. For comparison purposes, commonly used Wald-type tests, which do not make any distributional assumptions, are included in the simulation study. The simulation study shows that the presented studentized permutation test for assessing non-inferiority in three-arm trials in the 'gold standard' design outperforms its competitors, for instance the test based on a quasi-Poisson model, for count data. The methods discussed in this paper are implemented in the R package ThreeArmedTrials which is available on the comprehensive R archive network (CRAN). Copyright © 2016 John Wiley & Sons, Ltd.

  2. Explicit Symplectic-like Integrators with Midpoint Permutations for Spinning Compact Binaries

    NASA Astrophysics Data System (ADS)

    Luo, Junjie; Wu, Xin; Huang, Guoqing; Liu, Fuyao

    2017-01-01

    We refine the recently developed fourth-order extended phase space explicit symplectic-like methods for inseparable Hamiltonians using Yoshida’s triple product combined with a midpoint permuted map. The midpoint between the original variables and their corresponding extended variables at every integration step is readjusted as the initial values of the original variables and their corresponding extended ones at the next step integration. The triple-product construction is apparently superior to the composition of two triple products in computational efficiency. Above all, the new midpoint permutations are more effective in restraining the equality of the original variables and their corresponding extended ones at each integration step than the existing sequent permutations of momenta and coordinates. As a result, our new construction shares the benefit of implicit symplectic integrators in the conservation of the second post-Newtonian Hamiltonian of spinning compact binaries. Especially for the chaotic case, it can work well, but the existing sequent permuted algorithm cannot. When dissipative effects from the gravitational radiation reaction are included, the new symplectic-like method has a secular drift in the energy error of the dissipative system for the orbits that are regular in the absence of radiation, as an implicit symplectic integrator does. In spite of this, it is superior to the same-order implicit symplectic integrator in accuracy and efficiency. The new method is particularly useful in discussing the long-term evolution of inseparable Hamiltonian problems.

  3. Suppressing Permutations or Rigid Planar Rotations: A Remedy against Nonoptimal Varimax Rotations.

    ERIC Educational Resources Information Center

    Berge, Jos M. F. ten

    1995-01-01

    In Varimax rotation, permutations and reflections can give rise to the phenomenon that certain pairs of columns are consistently skipped in the iterative process, causing Varimax to terminate at a nonstationary point. This skipping phenomenon is demonstrated, and how to prevent it is described. (SLD)

  4. Circular permutation of the starch-binding domain: inversion of ligand selectivity with increased affinity.

    PubMed

    Stephen, Preyesh; Tseng, Kai-Li; Liu, Yu-Nan; Lyu, Ping-Chiang

    2012-03-07

    Proteins containing starch-binding domains (SBDs) are used in a variety of scientific and technological applications. A circularly permutated SBD (CP90) with improved affinity and selectivity toward longer-chain carbohydrates was synthesized, suggesting that a new starch-binding protein may be developed for specific scientific and industrial applications.

  5. The coupling analysis between stock market indices based on permutation measures

    NASA Astrophysics Data System (ADS)

    Shi, Wenbin; Shang, Pengjian; Xia, Jianan; Yeh, Chien-Hung

    2016-04-01

    Many information-theoretic methods have been proposed for analyzing the coupling dependence between time series. And it is significant to quantify the correlation relationship between financial sequences since the financial market is a complex evolved dynamic system. Recently, we developed a new permutation-based entropy, called cross-permutation entropy (CPE), to detect the coupling structures between two synchronous time series. In this paper, we extend the CPE method to weighted cross-permutation entropy (WCPE), to address some of CPE's limitations, mainly its inability to differentiate between distinct patterns of a certain motif and the sensitivity of patterns close to the noise floor. It shows more stable and reliable results than CPE does when applied it to spiky data and AR(1) processes. Besides, we adapt the CPE method to infer the complexity of short-length time series by freely changing the time delay, and test it with Gaussian random series and random walks. The modified method shows the advantages in reducing deviations of entropy estimation compared with the conventional one. Finally, the weighted cross-permutation entropy of eight important stock indices from the world financial markets is investigated, and some useful and interesting empirical results are obtained.

  6. Heuristic Implementation of Dynamic Programming for Matrix Permutation Problems in Combinatorial Data Analysis

    ERIC Educational Resources Information Center

    Brusco, Michael J.; Kohn, Hans-Friedrich; Stahl, Stephanie

    2008-01-01

    Dynamic programming methods for matrix permutation problems in combinatorial data analysis can produce globally-optimal solutions for matrices up to size 30x30, but are computationally infeasible for larger matrices because of enormous computer memory requirements. Branch-and-bound methods also guarantee globally-optimal solutions, but computation…

  7. RFID Data Cleaning for Shop Floor Applications

    NASA Astrophysics Data System (ADS)

    Ziekow, Holger; Ivantysynova, Lenka; Günter, Oliver

    In several case studies we found that shop-floor applications in manufacturing pose special challenges to cleaning RFID data. The underlying problem in many scenarios is the uncertainty about the exact location of observed RFID tags. Simple filter s provided in common middleware solutions do not cope well with these challenges. Therefore we have developed an approach based on maximum-likelihood estimation to infer a tag's location within the reader range. This enables improved RFID data cleaning in a number of application scenarios. We stress the benefits of our approach along exemplary application scenarios that we found in manufacturing. In simulations and experiments with real world data we show that our approach outperforms existing solutions. Our approach can extend RFID middleware or reader firmware, to improve the use of RFID in a range of shop-floor applications.

  8. [Art nouveau: pharmacy shops in Nancy].

    PubMed

    Leclerc, Florence; Labrude, Pierre

    2002-01-01

    At the beginning of the 20th century, an important artistic activity develops in Nancy. The "Ecole de Nancy" transforms a provincial city into one of the metropolis of "Art Nouveau". The pharmacists participate at the activity of their town and eight of them choose the new style for their pharmacy. In 1902, Rosfelder is the first to modify his shop, and later, Jacques, Delidon, Mouzin, Godfrin brothers, Monal and Fandre, before, during and after the First World War, have a same step. For the ornament, the artists use plants derived from local medicinal flora. "Art Nouveau", adept of curves, appears to be ideal to symbolize vegetable kingdom. In these pharmacy shops, fine arts join materia medica.

  9. Heuristics for Job-Shop Scheduling

    DTIC Science & Technology

    1988-01-01

    None 11. KEY WORDS (Continue on fewer&* Slde II neceseome aid idontify by Wock numberh) scheduling job-shop heuristic geometric 20. ABSTRACT (C nRtnue...partial fulfillment of the requirements for the degree of Doctor of Science in Mechanical Engineering. Abstract Two methods of obtaining approximate... Representation 27 2.1 Cartesian Completion Space. .. .. .. .. .I.. ... ... ... ... 27 2.2 Capabilities and Limitations of the Representation

  10. Switching Circuit for Shop Vacuum System

    NASA Technical Reports Server (NTRS)

    Burley, R. K.

    1987-01-01

    No internal connections to machine tools required. Switching circuit controls vacuum system draws debris from grinders and sanders in machine shop. Circuit automatically turns on vacuum system whenever at least one sander or grinder operating. Debris safely removed, even when operator neglects to turn on vacuum system manually. Pickup coils sense alternating magnetic fields just outside operating machines. Signal from any coil or combination of coils causes vacuum system to be turned on.

  11. Permutation approach to finite-alphabet stationary stochastic processes based on the duality between values and orderings

    NASA Astrophysics Data System (ADS)

    Haruna, T.; Nakajima, K.

    2013-06-01

    The duality between values and orderings is a powerful tool to discuss relationships between various information-theoretic measures and their permutation analogues for discrete-time finite-alphabet stationary stochastic processes (SSPs). Applying it to output processes of hidden Markov models with ergodic internal processes, we have shown in our previous work that the excess entropy and the transfer entropy rate coincide with their permutation analogues. In this paper, we discuss two permutation characterizations of the two measures for general ergodic SSPs not necessarily having the Markov property assumed in our previous work. In the first approach, we show that the excess entropy and the transfer entropy rate of an ergodic SSP can be obtained as the limits of permutation analogues of them for the N-th order approximation by hidden Markov models, respectively. In the second approach, we employ the modified permutation partition of the set of words which considers equalities of symbols in addition to permutations of words. We show that the excess entropy and the transfer entropy rate of an ergodic SSP are equal to their modified permutation analogues, respectively.

  12. Analysis of dispatching rules in a stochastic dynamic job shop manufacturing system with sequence-dependent setup times

    NASA Astrophysics Data System (ADS)

    Sharma, Pankaj; Jain, Ajai

    2014-12-01

    Stochastic dynamic job shop scheduling problem with consideration of sequence-dependent setup times are among the most difficult classes of scheduling problems. This paper assesses the performance of nine dispatching rules in such shop from makespan, mean flow time, maximum flow time, mean tardiness, maximum tardiness, number of tardy jobs, total setups and mean setup time performance measures viewpoint. A discrete event simulation model of a stochastic dynamic job shop manufacturing system is developed for investigation purpose. Nine dispatching rules identified from literature are incorporated in the simulation model. The simulation experiments are conducted under due date tightness factor of 3, shop utilization percentage of 90% and setup times less than processing times. Results indicate that shortest setup time (SIMSET) rule provides the best performance for mean flow time and number of tardy jobs measures. The job with similar setup and modified earliest due date (JMEDD) rule provides the best performance for makespan, maximum flow time, mean tardiness, maximum tardiness, total setups and mean setup time measures.

  13. A Comparison of Multiscale Permutation Entropy Measures in On-Line Depth of Anesthesia Monitoring

    PubMed Central

    Li, Xiaoli; Li, Duan; Li, Yongwang; Ursino, Mauro

    2016-01-01

    Objective Multiscale permutation entropy (MSPE) is becoming an interesting tool to explore neurophysiological mechanisms in recent years. In this study, six MSPE measures were proposed for on-line depth of anesthesia (DoA) monitoring to quantify the anesthetic effect on the real-time EEG recordings. The performance of these measures in describing the transient characters of simulated neural populations and clinical anesthesia EEG were evaluated and compared. Methods Six MSPE algorithms—derived from Shannon permutation entropy (SPE), Renyi permutation entropy (RPE) and Tsallis permutation entropy (TPE) combined with the decomposition procedures of coarse-graining (CG) method and moving average (MA) analysis—were studied. A thalamo-cortical neural mass model (TCNMM) was used to generate noise-free EEG under anesthesia to quantitatively assess the robustness of each MSPE measure against noise. Then, the clinical anesthesia EEG recordings from 20 patients were analyzed with these measures. To validate their effectiveness, the ability of six measures were compared in terms of tracking the dynamical changes in EEG data and the performance in state discrimination. The Pearson correlation coefficient (R) was used to assess the relationship among MSPE measures. Results CG-based MSPEs failed in on-line DoA monitoring at multiscale analysis. In on-line EEG analysis, the MA-based MSPE measures at 5 decomposed scales could track the transient changes of EEG recordings and statistically distinguish the awake state, unconsciousness and recovery of consciousness (RoC) state significantly. Compared to single-scale SPE and RPE, MSPEs had better anti-noise ability and MA-RPE at scale 5 performed best in this aspect. MA-TPE outperformed other measures with faster tracking speed of the loss of unconsciousness. Conclusions MA-based multiscale permutation entropies have the potential for on-line anesthesia EEG analysis with its simple computation and sensitivity to drug effect

  14. Forecasting of indirect consumables for a Job Shop

    NASA Astrophysics Data System (ADS)

    Shakeel, M.; Khan, S.; Khan, W. A.

    2016-08-01

    A job shop has an arrangement where similar machines (Direct consumables) are grouped together and use indirect consumables to produce a product. The indirect consumables include hack saw blades, emery paper, painting brush etc. The job shop is serving various orders at a particular time for the optimal operation of job shop. Forecasting is required to predict the demand of direct and indirect consumables in a job shop. Forecasting is also needed to manage lead time, optimize inventory cost and stock outs. The objective of this research is to obtain the forecast for indirect consumables. The paper shows how job shop can manage their indirect consumables more accurately by establishing a new technique of forecasting. This results in profitable use of job shop by multiple users.

  15. Social image of students who shop and don't shop online.

    PubMed

    Lammers, H Bruce; Curren, Mary T; Cours, Deborah; Lammers, Marilyn L

    2003-06-01

    A descriptive survey of a stratified random sample of 326 undergraduates from a large, diverse university in Los Angeles was conducted to assess whether resistance to online shopping might be, in part, related to negative social perceptions of those who shop online. Indirect questioning showed that students perceived online student shoppers as more lazy and less likely to fear for the safety and security of others but also as more trustworthy, attractive, successful, and smart. Differences in social perceptions were not related to these students' own online spending.

  16. 13. Detail of doubledoor opening between machine shop section of ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    13. Detail of double-door opening between machine shop section of roundhouse and engine house section of roundhouse. Engine house visible through rectangular opening. At one time the opening extended to the intrados of the arch above the doorway, allowing railroad engines to fit inside the machine shop. View to east. - Duluth & Iron Range Rail Road Company Shops, Roundhouse, Southwest of downtown Two Harbors, northwest of Agate Bay, Two Harbors, Lake County, MN

  17. 4. Elevation, looking southwest, with Machine Shop and Goliath traveling ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    4. Elevation, looking southwest, with Machine Shop and Goliath traveling crane in background. - General Dynamics Corporation Shipyard, American Revolver Crane, 97 East Howard Street, Quincy, Norfolk County, MA

  18. Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, Combination Smokestack, Water Tank & Privies, Bounded by West Broad, Jones, West Boundary & Hull Streets, Savannah, Chatham County, GA

  19. Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Central of Georgia Railway, Savannah Repair Shops & Terminal Facilities, Brick Storage Vaults under Jones Street, Bounded by West Broad, Jones, West Boundary & Hull Streets, Savannah, Chatham County, GA

  20. View of book shop on elevator reboarding level Washington ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View of book shop on elevator reboarding level - Washington Monument, High ground West of Fifteenth Street, Northwest, between Independence & Constitution Avenues, Washington, District of Columbia, DC

  1. Weighted fractional permutation entropy and fractional sample entropy for nonlinear Potts financial dynamics

    NASA Astrophysics Data System (ADS)

    Xu, Kaixuan; Wang, Jun

    2017-02-01

    In this paper, recently introduced permutation entropy and sample entropy are further developed to the fractional cases, weighted fractional permutation entropy (WFPE) and fractional sample entropy (FSE). The fractional order generalization of information entropy is utilized in the above two complexity approaches, to detect the statistical characteristics of fractional order information in complex systems. The effectiveness analysis of proposed methods on the synthetic data and the real-world data reveals that tuning the fractional order allows a high sensitivity and more accurate characterization to the signal evolution, which is useful in describing the dynamics of complex systems. Moreover, the numerical research on nonlinear complexity behaviors is compared between the returns series of Potts financial model and the actual stock markets. And the empirical results confirm the feasibility of the proposed model.

  2. Storage and computationally efficient permutations of factorized covariance and square-root information matrices

    NASA Technical Reports Server (NTRS)

    Muellerschoen, R. J.

    1988-01-01

    A unified method to permute vector-stored upper-triangular diagonal factorized covariance (UD) and vector stored upper-triangular square-root information filter (SRIF) arrays is presented. The method involves cyclical permutation of the rows and columns of the arrays and retriangularization with appropriate square-root-free fast Givens rotations or elementary slow Givens reflections. A minimal amount of computation is performed and only one scratch vector of size N is required, where N is the column dimension of the arrays. To make the method efficient for large SRIF arrays on a virtual memory machine, three additional scratch vectors each of size N are used to avoid expensive paging faults. The method discussed is compared with the methods and routines of Bierman's Estimation Subroutine Library (ESL).

  3. A permutation information theory tour through different interest rate maturities: the Libor case.

    PubMed

    Bariviera, Aurelio Fernández; Guercio, María Belén; Martinez, Lisana B; Rosso, Osvaldo A

    2015-12-13

    This paper analyses Libor interest rates for seven different maturities and referred to operations in British pounds, euros, Swiss francs and Japanese yen, during the period 2001-2015. The analysis is performed by means of two quantifiers derived from information theory: the permutation Shannon entropy and the permutation Fisher information measure. An anomalous behaviour in the Libor is detected in all currencies except euros during the years 2006-2012. The stochastic switch is more severe in one, two and three months maturities. Given the special mechanism of Libor setting, we conjecture that the behaviour could have been produced by the manipulation that was uncovered by financial authorities. We argue that our methodology is pertinent as a market overseeing instrument.

  4. Computationally efficient permutation-based confidence interval estimation for tail-area FDR.

    PubMed

    Millstein, Joshua; Volfson, Dmitri

    2013-01-01

    Challenges of satisfying parametric assumptions in genomic settings with thousands or millions of tests have led investigators to combine powerful False Discovery Rate (FDR) approaches with computationally expensive but exact permutation testing. We describe a computationally efficient permutation-based approach that includes a tractable estimator of the proportion of true null hypotheses, the variance of the log of tail-area FDR, and a confidence interval (CI) estimator, which accounts for the number of permutations conducted and dependencies between tests. The CI estimator applies a binomial distribution and an overdispersion parameter to counts of positive tests. The approach is general with regards to the distribution of the test statistic, it performs favorably in comparison to other approaches, and reliable FDR estimates are demonstrated with as few as 10 permutations. An application of this approach to relate sleep patterns to gene expression patterns in mouse hypothalamus yielded a set of 11 transcripts associated with 24 h REM sleep [FDR = 0.15 (0.08, 0.26)]. Two of the corresponding genes, Sfrp1 and Sfrp4, are involved in wnt signaling and several others, Irf7, Ifit1, Iigp2, and Ifih1, have links to interferon signaling. These genes would have been overlooked had a typical a priori FDR threshold such as 0.05 or 0.1 been applied. The CI provides the flexibility for choosing a significance threshold based on tolerance for false discoveries and precision of the FDR estimate. That is, it frees the investigator to use a more data-driven approach to define significance, such as the minimum estimated FDR, an option that is especially useful for weak effects, often observed in studies of complex diseases.

  5. Input permutation method to detect active voxels in fMRI study☆

    PubMed Central

    Lee, Sang H.; Lim, Johan; Park, DoHwan; Biswal, Bharat B.; Petkova, Eva

    2013-01-01

    Correctly identifying voxels or regions of interest (ROI) that actively respond to a given stimulus is often an important objective/step in many functional magnetic resonance imaging (fMRI) studies. In this article, we study a nonparametric method to detect active voxels, which makes minimal assumption about the distribution of blood oxygen level-dependent (BOLD) signals. Our proposal has several interesting features. It uses time lagged correlation to take into account the delay in response to the stimulus, due to hemodynamic variations. We introduce an input permutation method (IPM), a type of block permutation method, to approximate the null distribution of the test statistic. Also, we propose to pool the permutation-derived statistics of preselected voxels for a better approximation to the null distribution. Finally, we control multiple testing error rate using the local false discovery rate (FDR) by Efron [Correlation and large-scale simultaneous hypothesis testing. J Am Stat Assoc 102 (2007) 93–103] and Park et al. [Estimation of empirical null using a mixture of normals and its use in local false discovery rate. Comput Stat Data Anal 55 (2011) 2421–2432] to select the active voxels. PMID:22819177

  6. Tolerance of a knotted near infrared fluorescent protein to random circular permutation

    PubMed Central

    Pandey, Naresh; Kuypers, Brianna E.; Nassif, Barbara; Thomas, Emily E.; Alnahhas, Razan N.; Segatori, Laura; Silberg, Jonathan J.

    2016-01-01

    Bacteriophytochrome photoreceptors (BphP) are knotted proteins that have been developed as near-infrared fluorescent protein (iRFP) reporters of gene expression. To explore how rearrangements in the peptides that interlace into the knot within the BphP photosensory core affect folding, we subjected iRFP to random circular permutation using an improved transposase mutagenesis strategy and screened for variants that fluoresce. We identified twenty seven circularly permuted iRFP that display biliverdin-dependent fluorescence in Escherichia coli. The variants with the brightest whole cell fluorescence initiated translation at residues near the domain linker and knot tails, although fluorescent variants were discovered that initiated translation within the PAS and GAF domains. Circularly permuted iRFP retained sufficient cofactor affinity to fluoresce in tissue culture without the addition of biliverdin, and one variant displayed enhanced fluorescence when expressed in bacteria and tissue culture. This variant displayed a similar quantum yield as iRFP, but exhibited increased resistance to chemical denaturation, suggesting that the observed signal increase arose from more efficient protein maturation. These results show how the contact order of a knotted BphP can be altered without disrupting chromophore binding and fluorescence, an important step towards the creation of near-infrared biosensors with expanded chemical-sensing functions for in vivo imaging. PMID:27304983

  7. Permutation entropy and statistical complexity analysis of turbulence in laboratory plasmas and the solar wind.

    PubMed

    Weck, P J; Schaffner, D A; Brown, M R; Wicks, R T

    2015-02-01

    The Bandt-Pompe permutation entropy and the Jensen-Shannon statistical complexity are used to analyze fluctuating time series of three different turbulent plasmas: the magnetohydrodynamic (MHD) turbulence in the plasma wind tunnel of the Swarthmore Spheromak Experiment (SSX), drift-wave turbulence of ion saturation current fluctuations in the edge of the Large Plasma Device (LAPD), and fully developed turbulent magnetic fluctuations of the solar wind taken from the Wind spacecraft. The entropy and complexity values are presented as coordinates on the CH plane for comparison among the different plasma environments and other fluctuation models. The solar wind is found to have the highest permutation entropy and lowest statistical complexity of the three data sets analyzed. Both laboratory data sets have larger values of statistical complexity, suggesting that these systems have fewer degrees of freedom in their fluctuations, with SSX magnetic fluctuations having slightly less complexity than the LAPD edge I(sat). The CH plane coordinates are compared to the shape and distribution of a spectral decomposition of the wave forms. These results suggest that fully developed turbulence (solar wind) occupies the lower-right region of the CH plane, and that other plasma systems considered to be turbulent have less permutation entropy and more statistical complexity. This paper presents use of this statistical analysis tool on solar wind plasma, as well as on an MHD turbulent experimental plasma.

  8. Revisiting the European sovereign bonds with a permutation-information-theory approach

    NASA Astrophysics Data System (ADS)

    Fernández Bariviera, Aurelio; Zunino, Luciano; Guercio, María Belén; Martinez, Lisana B.; Rosso, Osvaldo A.

    2013-12-01

    In this paper we study the evolution of the informational efficiency in its weak form for seventeen European sovereign bonds time series. We aim to assess the impact of two specific economic situations in the hypothetical random behavior of these time series: the establishment of a common currency and a wide and deep financial crisis. In order to evaluate the informational efficiency we use permutation quantifiers derived from information theory. Specifically, time series are ranked according to two metrics that measure the intrinsic structure of their correlations: permutation entropy and permutation statistical complexity. These measures provide the rectangular coordinates of the complexity-entropy causality plane; the planar location of the time series in this representation space reveals the degree of informational efficiency. According to our results, the currency union contributed to homogenize the stochastic characteristics of the time series and produced synchronization in the random behavior of them. Additionally, the 2008 financial crisis uncovered differences within the apparently homogeneous European sovereign markets and revealed country-specific characteristics that were partially hidden during the monetary union heyday.

  9. Online quantitative proteomics p-value calculator for permutation-based statistical testing of peptide ratios.

    PubMed

    Chen, David; Shah, Anup; Nguyen, Hien; Loo, Dorothy; Inder, Kerry L; Hill, Michelle M

    2014-09-05

    The utility of high-throughput quantitative proteomics to identify differentially abundant proteins en-masse relies on suitable and accessible statistical methodology, which remains mostly an unmet need. We present a free web-based tool, called Quantitative Proteomics p-value Calculator (QPPC), designed for accessibility and usability by proteomics scientists and biologists. Being an online tool, there is no requirement for software installation. Furthermore, QPPC accepts generic peptide ratio data generated by any mass spectrometer and database search engine. Importantly, QPPC utilizes the permutation test that we recently found to be superior to other methods for analysis of peptide ratios because it does not assume normal distributions.1 QPPC assists the user in selecting significantly altered proteins based on numerical fold change, or standard deviation from the mean or median, together with the permutation p-value. Output is in the form of comma separated values files, along with graphical visualization using volcano plots and histograms. We evaluate the optimal parameters for use of QPPC, including the permutation level and the effect of outlier and contaminant peptides on p-value variability. The optimal parameters defined are deployed as default for the web-tool at http://qppc.di.uq.edu.au/ .

  10. Replica-Permutation Method with the Suwa-Todo Algorithm beyond the Replica-Exchange Method.

    PubMed

    Itoh, Satoru G; Okumura, Hisashi

    2013-01-08

    We propose a new method for molecular dynamics and Monte Carlo simulations, which is referred to as the replica-permutation method (RPM), to realize more efficient sampling than the replica-exchange method (REM). In RPM, not only exchanges between two replicas but also permutations among more than two replicas are performed. Furthermore, instead of the Metropolis algorithm, the Suwa-Todo algorithm is employed for replica-permutation trials to minimize its rejection ratio. We applied RPM to particles in a double-well potential energy, Met-enkephalin in a vacuum, and a C-peptide analog of ribonuclease A in explicit water. For comparison purposes, replica-exchange molecular dynamics simulations were also performed. As a result, RPM sampled not only the temperature space but also the conformational space more efficiently than REM for all systems. From our simulations of C-peptide, we obtained the α-helix structure with salt bridges between Gly2 and Arg10, which is known in experiments. Calculating its free-energy landscape, the folding pathway was revealed from an extended structure to the α-helix structure with the salt bridges. We found that the folding pathway consists of the two steps: The first step is the "salt-bridge formation step," and the second step is the "α-helix formation step."

  11. A New Look for the Shopping Mall

    NASA Technical Reports Server (NTRS)

    1985-01-01

    STRUCTO-FAB, a product of Owens-Corning Fiberglas Corporation, is a lightweight but extremely durable tent-like material made of Fiberglas coated with Teflon. It transmits daylight with a reduced need for artificial lighting. It is an outgrowth of a material formulated by NASA in 1967 as a new space suit fabric. Owens-Corning and DuPont provided the original material, which was the basis for Structo-Fab, a permanent architectural fabric used for shopping malls, sports stadiums, etc.

  12. Shopping for price in medical care.

    PubMed

    Ginsburg, Paul B

    2007-01-01

    Insurers are well positioned to support their enrollees in shopping for care because of their ability to analyze complex data--reflecting both their negotiated discounts and the enrollee's benefit structure--should they decide to commit resources to this task. Government transparency initiatives can help those who are uninsured or want to use out-of-network providers with data on prices and all patients by gathering and disseminating data on quality. But clumsy requirements to disclose insurer-provider contracts could lead to higher prices. Greater price transparency might help curb rising costs, but many overstate the likely magnitude of its contribution.

  13. Verification Tools Secure Online Shopping, Banking

    NASA Technical Reports Server (NTRS)

    2010-01-01

    Just like rover or rocket technology sent into space, the software that controls these technologies must be extensively tested to ensure reliability and effectiveness. Ames Research Center invented the open-source Java Pathfinder (JPF) toolset for the deep testing of Java-based programs. Fujitsu Labs of America Inc., based in Sunnyvale, California, improved the capabilities of the JPF Symbolic Pathfinder tool, establishing the tool as a means of thoroughly testing the functionality and security of Web-based Java applications such as those used for Internet shopping and banking.

  14. Aft Engine shop worker removes a heat shield on Columbia's main engines

    NASA Technical Reports Server (NTRS)

    2002-01-01

    KENNEDY SPACE CENTER, FLA. - Doug Buford, with the Aft Engine shop, works at removing a heat shield on Columbia, in the Orbiter Processing Facility. After small cracks were discovered on the LH2 Main Propulsion System (MPS) flow liners in two other orbiters, program managers decided to move forward with inspections on Columbia before clearing it for flight on STS-107. After removal of the heat shields, the three main engines will be removed. Inspections of the flow liners will follow. The July 19 launch of Columbia on STS-107 has been delayed a few weeks

  15. Aft Engine shop worker removes a heat shield on Columbia's main engines

    NASA Technical Reports Server (NTRS)

    2002-01-01

    KENNEDY SPACE CENTER, FLA. -- Doug Buford, with the Aft Engine shop, works at removing a heat shield on Columbia, in the Orbiter Processing Facility. After small cracks were discovered on the LH2 Main Propulsion System (MPS) flow liners in two other orbiters, program managers decided to move forward with inspections on Columbia before clearing it for flight on STS-107. After removal of the heat shields, the three main engines will be removed. Inspections of the flow liners will follow. The July 19 launch of Columbia on STS-107 has been delayed a few weeks

  16. Aft Engine shop worker removes a heat shield on Columbia's main engines

    NASA Technical Reports Server (NTRS)

    2002-01-01

    KENNEDY SPACE CENTER, FLA. -- Doug Buford (top), with the Aft Engine shop, along with another worker, removes a heat shield on one of Columbia's engines. After small cracks were discovered on the LH2 Main Propulsion System (MPS) flow liners in two other orbiters, program managers decided to move forward with inspections on Columbia before clearing it for flight on STS-107. After removal of the heat shields, the three main engines will be removed. Inspections of the flow liners will follow. The July 19 launch of Columbia on STS-107 has been delayed a few weeks

  17. VIEW WESTLEFTBUILDING 7 MACHINE SHOP (1890) CENTERBUILDING 3 SOUTH ROPE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW WEST-LEFT-BUILDING 7 MACHINE SHOP (1890) CENTER-BUILDING 3 SOUTH ROPE SHOP (LEFT 1929, RIGHT 1911) RIGHT-BUILDING 10 CLINTON STREET STOREHOUSE (1927) - John A. Roebling's Sons Company & American Steel & Wire Company, South Broad, Clark, Elmer, Mott & Hudson Streets, Trenton, Mercer County, NJ

  18. VIEW NORTHEASTLEFTBUILDING 110 CARPENTER SHOP (1908) LEFT CENTERBUILDING 105 ENGINE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW NORTHEAST-LEFT-BUILDING 110 CARPENTER SHOP (1908) LEFT CENTER-BUILDING 105 ENGINE HOUSE (1917) RIGHT-BUILDING 104 BOILER HOUSE (1916) RIGHT-BUILDINGS 102 & 101 ELMER STREET & CLARK STREET ROPE SHOPS (1917) - John A. Roebling's Sons Company & American Steel & Wire Company, South Broad, Clark, Elmer, Mott & Hudson Streets, Trenton, Mercer County, NJ

  19. 100. COBBLER SHOP AFT LOOKING FORWARD VISIBLE ARE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    100. COBBLER SHOP - AFT LOOKING FORWARD - VISIBLE ARE THE FINISHING MACHINE, DAVIS STITCHING MACHINE, SINGER SEWING MACHINE FROM TAILOR SHOP, STORAGE SHELVES, WORK BENCH AND SHOE TREE STAND. - U.S.S. HORNET, Puget Sound Naval Shipyard, Sinclair Inlet, Bremerton, Kitsap County, WA

  20. 7. VIEW OF LATHES ON WEST END OF MACHINE SHOP ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. VIEW OF LATHES ON WEST END OF MACHINE SHOP No. 2 ADDITION. LATHE ON LEFT IS 120' (CHUCK) X 72'. LATHE ON RIGHT IS 124' (CHUCK) X 21'. - U.S. Steel Homestead Works, Machine Shop No. 2, Along Monongahela River, Homestead, Allegheny County, PA

  1. 1. EAST END OF MACHINE SHOP No. 2. THE TALL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. EAST END OF MACHINE SHOP No. 2. THE TALL STRUCTURE IS THE VERTICAL FURNACE BUILDING, AND THE TWO-STORY BRICK BUILDING WAS THE HEAT TREATING AND FORGING OFFICE. - U.S. Steel Homestead Works, Machine Shop No. 2, Along Monongahela River, Homestead, Allegheny County, PA

  2. WEST END OF SOUTH FACADE OF MACHINE SHOP No. 1. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    WEST END OF SOUTH FACADE OF MACHINE SHOP No. 1. BRICK SECTION ON THE LEFT IS THE FORMER OFFICE OF THE ARMOR PLATE DIVISION BUILT IN 1899 - U.S. Steel Homestead Works, Machine Shop No. 1, Along Monongahela River, Homestead, Allegheny County, PA

  3. 6. VIEW OF LATHE OF EAST END OF MACHINE SHOP ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. VIEW OF LATHE OF EAST END OF MACHINE SHOP No. 2 ADDITION. THE 78 1/2' X 100 LATHE BORES OUT CENTERS, OR TREPANNS, OF FORGING. - U.S. Steel Homestead Works, Machine Shop No. 2, Along Monongahela River, Homestead, Allegheny County, PA

  4. MACHINE SHOP AT SHIPYARD NO. 3, VIEW TO WESTSOUTHWEST OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    MACHINE SHOP AT SHIPYARD NO. 3, VIEW TO WEST-SOUTHWEST OF THE EAST ELEVATION. LOOKING ACROSS THE RICHMOND INNER HARBOR FROM NEAR THE FORD ASSEMBLY BUILDING - Rosie the Riveter National Historical Park, Machine Shop, 1311 Canal Boulevard, Richmond, Contra Costa County, CA

  5. MACHINE SHOP, PERSPECTIVE VIEW TO NORTHNORTHEAST OF THE WEST SIDE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    MACHINE SHOP, PERSPECTIVE VIEW TO NORTH-NORTHEAST OF THE WEST SIDE AND SOUTH END. WEST (REAR) SIDE OF GENERAL WAREHOUSE IS IN RIGHT FOREGROUND - Rosie the Riveter National Historical Park, Machine Shop, 1311 Canal Boulevard, Richmond, Contra Costa County, CA

  6. 12. Detail of engine pit in machine shop section of ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    12. Detail of engine pit in machine shop section of roundhouse. Engine house section of roundhouse visible in background through rectangular openings. View to southeast. - Duluth & Iron Range Rail Road Company Shops, Roundhouse, Southwest of downtown Two Harbors, northwest of Agate Bay, Two Harbors, Lake County, MN

  7. VIEW EASTACROSS SOUTH BROAD STREET LEFTBUILDING 28 BLACKSMITH SHOP (1885) ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW EAST-ACROSS SOUTH BROAD STREET LEFT-BUILDING 28 BLACKSMITH SHOP (1885) CENTER-REAR-BUILDING 40 WIRE WAREHOUSE (1915) RIGHT-BUILDING 32 MACHINE SHOP (1890) - John A. Roebling's Sons Company & American Steel & Wire Company, South Broad, Clark, Elmer, Mott & Hudson Streets, Trenton, Mercer County, NJ

  8. View south of hydraulic hammer in boilermakers shop (probably the ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View south of hydraulic hammer in boilermakers shop (probably the oldest piece of equipment in the yard, originally powered by steam) nameplate: United Engineers and FDRY. Co. Pittsburgh, Pa, USA Davy Brothers LTD. Patents - Aug 1, 1905, Feb, 1901, Sept 8, 1908 - 10000 lbs. - Naval Base Philadelphia-Philadelphia Naval Shipyard, Structure Shop, League Island, Philadelphia, Philadelphia County, PA

  9. 50. INTERIOR VIEW TO SOUTH AT FIRST FLOOR MACHINE SHOP: ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    50. INTERIOR VIEW TO SOUTH AT FIRST FLOOR MACHINE SHOP: Interior view towards south of the machine shop located on the first floor of the powerhouse and car barn. Compare this view with CA-12-74, taken seventeen years earlier. - San Francisco Cable Railway, Washington & Mason Streets, San Francisco, San Francisco County, CA

  10. 45. July 1974. BLACKSMITH SHOP, VIEW LOOKING NORTHEAST, SHOWING BELT ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    45. July 1974. BLACKSMITH SHOP, VIEW LOOKING NORTHEAST, SHOWING BELT CHASE FOR TWO BELTS FROM THE BASEMENT, THE W. E. & J. BARNES CO. DRILL PRESS, AND THE DRILL PRESS USED FOR REAMING. THE BELT PASSING THROUGH THE WALL POWERS THE SANDER IN THE WOOD SHOP. - Gruber Wagon Works, Pennsylvania Route 183 & State Hill Road at Red Bridge Park, Bernville, Berks County, PA

  11. View north of west gallery of inside machine shop 36; ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View north of west gallery of inside machine shop 36; the gallery housed turret, engine and toolroom lathes, small milling machines and drill presses used for machining small parts. - Naval Base Philadelphia-Philadelphia Naval Shipyard, Structure Shop, League Island, Philadelphia, Philadelphia County, PA

  12. 12. LOWER LEVEL OF EAST BUILDING (PAINT SHOP) LOOKING SOUTH ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    12. LOWER LEVEL OF EAST BUILDING (PAINT SHOP) LOOKING SOUTH TO RIVER NOTE; GROWN SHIP KNEES AT POSTS TO SUPPORT BEAMS. LOLLY COLUMNS ADDED TO SUPPORT SAGGING BEAM. LATRINE AND STAIRS TO STREET LEVEL CAN BE SEEN AT RIGHT. - Lowell's Boat Shop, 459 Main Street, Amesbury, Essex County, MA

  13. Machine Shop. Criterion-Referenced Test (CRT) Item Bank.

    ERIC Educational Resources Information Center

    Davis, Diane, Ed.

    This drafting criterion-referenced test item bank is keyed to the machine shop competency profile developed by industry and education professionals in Missouri. The 16 references used for drafting the test items are listed. Test items are arranged under these categories: orientation to machine shop; performing mathematical calculations; performing…

  14. Machine Shop. Performance Objectives. Intermediate Course. Career Education.

    ERIC Educational Resources Information Center

    Hilton, Arthur; Lambert, George

    Several intermediate performance objectives and corresponding criterion measures are listed for each of eight terminal objectives for a high school intermediate machine shop course. The materials were developed for a 36-week course (3 hours daily) designed to enable students to become familiar with the operation of machine shop equipment, to…

  15. BENDING SHOP & OVEN. United Engineering Co., Alameda, California. Plan, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    BENDING SHOP & OVEN. United Engineering Co., Alameda, California. Plan, two elevations, sections, and details. Alben Froberg, Architect, Oakland, California. Sheet no. 1 of 1. Various scales. December 15, 1941. pencil on tracing paper - United Engineering Company Shipyard, Bending Shop & Oven, 2900 Main Street, Alameda, Alameda County, CA

  16. Heavy machine shop on the first floor of building no. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Heavy machine shop on the first floor of building no. 5. Many of the machines shown here are shown in photographs of the late 1880's - Thomas A. Edison Laboratories, Machine Shop & Library, Main Street & Lakeside Avenue, West Orange, Essex County, NJ

  17. 113. VIEW OF MACHINE SHOP FROM WEST. AREA IN FOREGROUND ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    113. VIEW OF MACHINE SHOP FROM WEST. AREA IN FOREGROUND WAS ONCE ENCLOSED AS PART OF THE SHOP. THE TRAM LINE AND SNOWSHED RAN TO THE RIGHT (SOUTH) TO EAGLE MINE PORTAL. - Bald Mountain Gold Mill, Nevada Gulch at head of False Bottom Creek, Lead, Lawrence County, SD

  18. 44. July 1974. BLACKSMITH SHOP, VIEW LOOKING EAST THROUGH THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    44. July 1974. BLACKSMITH SHOP, VIEW LOOKING EAST THROUGH THE DOOR TO THE WOOD SHOP; ON THE LEFT IS THE D. H. POTTS TIRE SHRINKER; TO THE RIGHT OF THE DOOR IS THE BELT CHASE FROM THE BASEMENT LINESHAFT. - Gruber Wagon Works, Pennsylvania Route 183 & State Hill Road at Red Bridge Park, Bernville, Berks County, PA

  19. View northwest of building 19 area used for pattern shop ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View northwest of building 19 area used for pattern shop storage (foreground), building 17 section of structure on left. This structure consists of two formerly separate buildings. - Naval Base Philadelphia-Philadelphia Naval Shipyard, Machine Shops, League Island, Philadelphia, Philadelphia County, PA

  20. 44. Cross section of the Blacksmith Shop from Construction Drawing ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    44. Cross section of the Blacksmith Shop from Construction Drawing 2042-F-15, entitled Machine and Blacksmith Shop; Plan, Elevations, and Sections. (Original drawing, in the possession of Wyre Dick and Company, Livingston, New Jersey.) - Central Railroad of New Jersey, Engine Terminal, Jersey City, Hudson County, NJ

  1. Production Machine Shop Employment Competencies. Part One: Practices and Principles.

    ERIC Educational Resources Information Center

    Bishart, Gus; Werner, Claire

    Competencies for production machine shop are provided for the first of four topic areas: principles and practice of machine shop. Each competency appears in a one-page format. It is presented as a goal statement followed by one or more "indicator" statements, which are performance objectives describing an ability that, upon attainment,…

  2. View southwest of machine shops, building 18 section visible in ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View southwest of machine shops, building 18 section visible in foreground; building 16 section on left. This structure consists of two formerly separate buildings. Jet Lowe, Haer staff photographer, summer 1995. - Naval Base Philadelphia-Philadelphia Naval Shipyard, Machine Shops, League Island, Philadelphia, Philadelphia County, PA

  3. Competency-Based Education Curriculum for Machine Shop. Teacher's Guide.

    ERIC Educational Resources Information Center

    Associated Educational Consultants, Inc., Pittsburgh, PA.

    This teacher's guide is designed to accompany the machine shop competency-based education curriculum for secondary students in West Virginia. It has been developed to facilitate use of the curriculum by instructors of machine shop programs. The teacher's guide contains the following material: an explanation of the curriculum and suggested usage; a…

  4. Interior of shop, showing the reheat furnaces; the vehicle in ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Interior of shop, showing the reheat furnaces; the vehicle in the center is a charging machine the operator of which manipulates steel ingots in the furnace, as well as in the adjacent forging hammers - Bethlehem Steel Corporation, South Bethlehem Works, Tool Steel-Electric Furnace Shop, Along Lehigh River, North of Fourth Street, West of Minsi Trail Bridge, Bethlehem, Northampton County, PA

  5. INTERIOR VIEW OF WESTERN ROOM OF PAINT SHOP PORTION OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    INTERIOR VIEW OF WESTERN ROOM OF PAINT SHOP PORTION OF BUILDING, FACING NORTHWEST, TOWARDS NON-FUNCTIONAL FOLDING BAY DOOR - Vancouver Barracks, Paint Shop and Central Heating Plant, East Fifth Street southeast of McLoughlin Road, Vancouver, Clark County, WA

  6. 1. Engine Stores Building, Southern Pacific Railroad Carlin Shops, northwest ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. Engine Stores Building, Southern Pacific Railroad Carlin Shops, northwest facade, view to southeast (90mm lens). The original building is at right, addition at left. The cold joint between the original and addition is approximately at the line of color differentiation near center of the roof. - Southern Pacific Railroad, Carlin Shops, Engine Stores Building, Foot of Sixth Street, Carlin, Elko County, NV

  7. On compulsive shopping and spending: a psychodynamic inquiry.

    PubMed

    Krueger, D W

    1988-10-01

    Compulsive shopping and spending, an impulse disorder, form a specific psychodynamic complex with common developmental precursors of pathological narcissism. Compulsive shopping and spending are distinguished from other symptomatic uses of money and impulsive acts. Four cases illustrate some psychodynamic considerations and therapeutic implications.

  8. 48 CFR 1952.227-77 - Rights in shop drawings.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 6 2010-10-01 2010-10-01 true Rights in shop drawings. 1952.227-77 Section 1952.227-77 Federal Acquisition Regulations System BROADCASTING BOARD OF GOVERNORS... Rights in shop drawings. As prescribed in 1927.405(h), insert the following clause: Rights in...

  9. DISTANT VIEW, AUTOMOTIVE REPAIR SHOP ON LEFT AND UTILITY BUILDING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    DISTANT VIEW, AUTOMOTIVE REPAIR SHOP ON LEFT AND UTILITY BUILDING "B" ON RIGHT. HOSE WINDING SHED ADJACENT TO SHED-ROOFED ADDITION ON THE UTILITY BUILDING, BLM SEED SHED AND TACK SHED VISIBLE IN FAR DISTANCE. VIEW TO EAST/ - Cedar City Automotive Repair Shop, 820 North Main Street, Cedar City, Iron County, UT

  10. DISTANCE VIEW, AUTOMOTIVE REPAIR SHOP ON LEFT AND UTILITY BUILDING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    DISTANCE VIEW, AUTOMOTIVE REPAIR SHOP ON LEFT AND UTILITY BUILDING "B" ON RIGHT. HOSE WINDING SHED ADJACENT TO SHED-ROOFED ADDITION ON THE UTILITY BUILDING, BLM SEED SHED AND TACK SHED VISIBLE IN FAR DISTANCE. VIEW TO EAST, WITH SCALE. - Cedar City Automotive Repair Shop, 820 North Main Street, Cedar City, Iron County, UT

  11. Authorizer Shopping: Lessons from Experience and Ideas for the Future

    ERIC Educational Resources Information Center

    Boast, Lyria; Ellison, Shonaka; Hassel, Bryan C.; Conlan, Sean; Rausch, M. Karega

    2016-01-01

    As charter school authorizers and states have increased performance expectations and grown less hesitant to close failing schools, "authorizer shopping" has emerged as a growing threat to overall charter school quality. Authorizer shopping happens when a charter school chooses or changes its authorizer specifically to avoid…

  12. 6. Detail, plat of Carlin Shops, 1884. Copied from Central ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. Detail, plat of Carlin Shops, 1884. Copied from Central Pacific Railroad bound book of station plats entitled 'Station Plans, CPRR, Mill City to Ogden,' in collection of Nevada Historical Society, Reno; credit Nevada Historical Society. Engine Stores Building is shown as building k. - Southern Pacific Railroad, Carlin Shops, Foot of Sixth Street, Carlin, Elko County, NV

  13. 7. VIEW OF MACHINE SHOP IN BUILDING 881. WORKERS IN ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. VIEW OF MACHINE SHOP IN BUILDING 881. WORKERS IN THE MACHINE SHOP FORMED ENRICHED URANIUM COMPONENTS INTO THEIR FINAL SHAPES. (12/12/56) - Rocky Flats Plant, General Manufacturing, Support, Records-Central Computing, Southern portion of Plant, Golden, Jefferson County, CO

  14. Looking north toward Locomotive Shop (2 tracks on left), Car ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Looking north toward Locomotive Shop (2 tracks on left), Car Shop on right, and flat car in foreground. Note locomotive and car tires leaning on stock shed at left - East Broad Top Railroad & Coal Company, State Route 994, West of U.S. Route 522, Rockhill Furnace, Huntingdon County, PA

  15. PRIVY, LOOKING NORTHEAST, WITH CAR SHOP NO. 3 IN RIGHT ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    PRIVY, LOOKING NORTHEAST, WITH CAR SHOP NO. 3 IN RIGHT BACKGROUND. BRIDGE FROM PRIVY’S THIRD FLOOR TO PLANING MILL’S SECOND FLOOR IS VISIBLE AT LEFT. - Southern Pacific, Sacramento Shops, Privy, 111 I Street, Sacramento, Sacramento County, CA

  16. Urban Studies Workshop. Shopping Centre Study. Rockfort, Illinois.

    ERIC Educational Resources Information Center

    Vandenhazel, Bessel J.

    The urban environment itself can be a laboratory for learning, and the learning activities in this workbook utilize the shopping center as a study site. General objectives of this unit of study are (1) to investigate how shopping centers serve the community; (2) to integrate a number of curriculum skills and concepts; and (3) to investigate the…

  17. Overview of Boiler House and Sheet Metal and Electrical Shops ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Overview of Boiler House and Sheet Metal and Electrical Shops Building (center - with single large chimney), note the monitor on the original section of the Boiler House Building, view facing north - Kahului Cannery, Plant No. 28, Boiler House, Sheet Metal and Electrical Shops, 120 Kane Street, Kahului, Maui County, HI

  18. Putting it All Together: Has One-Stop Shopping Arrived?

    ERIC Educational Resources Information Center

    Flanagan, Patrick

    1997-01-01

    Reviews the current state of "one-stop shopping" for telecom services. Discusses regulatory obstacles; administrative problems with single billing; and resistance of telecom providers to change. Concludes that the leading one-stop shopping providers will be individual carriers who offer cost savings. (AEF)

  19. How Traumatic Violence Permanently Changes Shopping Behavior.

    PubMed

    Sigirci, Ozge; Rockmore, Marc; Wansink, Brian

    2016-01-01

    Traumatic experiences - such as combat, living in a conflict country or war-torn nation, or experiencing a violent crime or natural disaster - change social relationships and may also influence a life-time of consumer relationships with brands and shopping. Our focus on this previously overlooked area is centered on an analysis of the long-term shopping habits of 355 combat veterans. We show that those who experienced heavy trauma (e.g., heavy combat) exhibited similar disconnection from brands as others have experienced in social relationships. They became more transactional in that they were more open to switching brands, to trying new products, and buying the least expensive alternative (p < 0.01). In contrast, those who had experienced a light trauma were more influenced by ads and more open to buying brands even when they cost more (p < 0.00). Trauma, such as combat, may change one's decision horizon. Functionality and price become more important, which is consistent with the idea that they are more focused on the present moment than on building on the past or saving for the future.

  20. How Traumatic Violence Permanently Changes Shopping Behavior

    PubMed Central

    Sigirci, Ozge; Rockmore, Marc; Wansink, Brian

    2016-01-01

    Traumatic experiences – such as combat, living in a conflict country or war-torn nation, or experiencing a violent crime or natural disaster – change social relationships and may also influence a life-time of consumer relationships with brands and shopping. Our focus on this previously overlooked area is centered on an analysis of the long-term shopping habits of 355 combat veterans. We show that those who experienced heavy trauma (e.g., heavy combat) exhibited similar disconnection from brands as others have experienced in social relationships. They became more transactional in that they were more open to switching brands, to trying new products, and buying the least expensive alternative (p < 0.01). In contrast, those who had experienced a light trauma were more influenced by ads and more open to buying brands even when they cost more (p < 0.00). Trauma, such as combat, may change one’s decision horizon. Functionality and price become more important, which is consistent with the idea that they are more focused on the present moment than on building on the past or saving for the future. PMID:27656152

  1. Effects of Website Interactivity on Online Retail Shopping Behavior

    NASA Astrophysics Data System (ADS)

    Islam, Hafizul

    Motivations to engage in retail online shopping can include both utilitarian and hedonic shopping dimensions. To cater to these consumers, online retailers can create a cognitively and esthetically rich shopping environment, through sophisticated levels of interactive web utilities and features, offering not only utilitarian benefits and attributes but also providing hedonic benefits of enjoyment. Since the effect of interactive websites has proven to stimulate online consumer’s perceptions, this study presumes that websites with multimedia rich interactive utilities and features can influence online consumers’ shopping motivations and entice them to modify or even transform their original shopping predispositions by providing them with attractive and enhanced interactive features and controls, thus generating a positive attitude towards products and services offered by the retailer. This study seeks to explore the effects of Web interactivity on online consumer behavior through an attitudinal model of technology acceptance.

  2. The Customer Rules and Other e-Shopping Myths

    NASA Astrophysics Data System (ADS)

    McLean, Rachel; Richardson, Helen

    This chapter discusses self-service and the Internet in the context of two studies, based in the UK, and undertaken during 1998-2005. They are united by a common framework of critically analysing discourses of e-shopping in the ‘ digital age ’. Firstly, myths surrounding e-shopping are deconstructed with a view to analysing the ‘sovereign consumer’ and the e-shopping experience. The second study considers home e-shopping in the UK. In an atmosphere where we are urged to engage with ICTs (information communication technologies) in all spheres of our lives, the domestication of ICTs necessitates consideration of the gendered family in gendered households. In conclusion, we argue those self-service aspects of e-shopping are not signs of empowerment and self-determination. The notion of the sovereign consumer exercising power and control globally is an enduring myth.

  3. Deciphering the Preference and Predicting the Viability of Circular Permutations in Proteins

    PubMed Central

    Liu, Yen-Yi; Wang, Li-Fen; Hwang, Jenn-Kang; Lyu, Ping-Chiang

    2012-01-01

    Circular permutation (CP) refers to situations in which the termini of a protein are relocated to other positions in the structure. CP occurs naturally and has been artificially created to study protein function, stability and folding. Recently CP is increasingly applied to engineer enzyme structure and function, and to create bifunctional fusion proteins unachievable by tandem fusion. CP is a complicated and expensive technique. An intrinsic difficulty in its application lies in the fact that not every position in a protein is amenable for creating a viable permutant. To examine the preferences of CP and develop CP viability prediction methods, we carried out comprehensive analyses of the sequence, structural, and dynamical properties of known CP sites using a variety of statistics and simulation methods, such as the bootstrap aggregating, permutation test and molecular dynamics simulations. CP particularly favors Gly, Pro, Asp and Asn. Positions preferred by CP lie within coils, loops, turns, and at residues that are exposed to solvent, weakly hydrogen-bonded, environmentally unpacked, or flexible. Disfavored positions include Cys, bulky hydrophobic residues, and residues located within helices or near the protein's core. These results fostered the development of an effective viable CP site prediction system, which combined four machine learning methods, e.g., artificial neural networks, the support vector machine, a random forest, and a hierarchical feature integration procedure developed in this work. As assessed by using the hydrofolate reductase dataset as the independent evaluation dataset, this prediction system achieved an AUC of 0.9. Large-scale predictions have been performed for nine thousand representative protein structures; several new potential applications of CP were thus identified. Many unreported preferences of CP are revealed in this study. The developed system is the best CP viability prediction method currently available. This work will

  4. Price-Shopping in Consumer-Directed Health Plans.

    PubMed

    Sood, Neeraj; Wagner, Zachary; Huckfeldt, Peter; Haviland, Amelia

    2013-01-01

    We use health insurance claims data from 63 large employers to estimate the extent of price shopping for nine common outpatient services in consumer-directed health plans (CDHPs) compared to traditional health plans. The main measures of price-shopping include: (1) the total price paid on the claim, (2) the share of claims from low and high cost providers and (3) the savings from price shopping relative to choosing prices randomly. All analyses control for individual and zip code level demographics and plan characteristics. We also estimate differences in price shopping within CDHPs depending on expected health care costs and whether the service was bought before or after reaching the deductible. For 8 out of 9 services analyzed, prices paid by CDHP and traditional plan enrollees did not differ significantly; CDHP enrollees paid 2.3% less for office visits. Similarly, office visits was the only service where CDHP enrollment resulted in a significantly larger share of claims from low cost providers and greater savings from price shopping relative to traditional plans. There was also no evidence that, within CDHP plans, consumers with lower expected medical expenses exhibited more price-shopping or that consumers exhibited more price-shopping before reaching the deductible.

  5. Ultrasonic interface level analyzer shop test procedure

    SciTech Connect

    STAEHR, T.W.

    1999-05-24

    The Royce Instrument Corporation Model 2511 Interface Level Analyzer (URSILLA) system uses an ultrasonic ranging technique (SONAR) to measure sludge depths in holding tanks. Three URSILLA instrument assemblies provided by the W-151 project are planned to be used during mixer pump testing to provide data for determining sludge mobilization effectiveness of the mixer pumps and sludge settling rates. The purpose of this test is to provide a documented means of verifying that the functional components of the three URSILLA instruments operate properly. Successful completion of this Shop Test Procedure (STP) is a prerequisite for installation in the AZ-101 tank. The objective of the test is to verify the operation of the URSILLA instruments and to verify data collection using a stand alone software program.

  6. Scheduling job shop - A case study

    NASA Astrophysics Data System (ADS)

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

    2016-08-01

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

  7. Impact of Energetically Accessible Proton Permutations in the Spectroscopy and Dynamics of H{_5^+}

    NASA Astrophysics Data System (ADS)

    Lin, Zhou; McCoy, Anne B.

    2016-06-01

    H{_5^+} has been proposed to be the intermediate of the astrochemically interesting proton transfer reaction H_3^+ + H_2 → H_2 + H_3^+. The scrambling of five protons in this floppy, ``structureless'' ion introduces complications to its high-resolution rovibrational spectroscopy and the proton transfer dynamics between H{_3^+} and H_2. Quantum chemical studies are performed to predict and interpret the spectroscopic and dynamical properties of H{_5^+}, with special consideration paid to the group theoretical aspects. If the full permutation of protons were allowed in H{_5^+}, just like in CH{_5^+}, the system should have been characterized by the G240 complete permutation-inversion group. However, our diffusion Monte Carlo calculations indicate that such a full permutation is not allowed for most of the molecular configurations sampled by the reaction path of the proton transfer process in question, and the energetically accessible permutations are functions of the distance between the H{_3^+} and H_2 fragments. In the present study, we investigate two extreme geometries of H{_5^+}, the [H_2-H-H_2]^+ shared-proton intermediate and the H_3^+\\cdots H_2 long-range complex, using two subgroups of G240, G16 and G24, respectively. In these two limiting circumstances, we derive the symmetry-adapted basis functions for the energy levels that describe the nuclear spins and the rovibrational motions of H{_5^+}. Based on the results of these derivations, we discuss the spectroscopic properties of H{_5^+}, including the coupling between different rovibrational degrees of freedom in the effective nuclear motion Hamiltonian, the electric-dipole selection rules for rovibrational spectroscopy, and correlations of energy levels between [H_2-H-H_2]^+ and H_3^+\\cdots H_2. Our study can be considered as the first step towards the implementation of future quantitative theoretical investigations for comparison with spectroscopic and dynamical experiments. X.-G. Wang and T

  8. Permutation approach, high frequency trading and variety of micro patterns in financial time series

    NASA Astrophysics Data System (ADS)

    Aghamohammadi, Cina; Ebrahimian, Mehran; Tahmooresi, Hamed

    2014-11-01

    Permutation approach is suggested as a method to investigate financial time series in micro scales. The method is used to see how high frequency trading in recent years has affected the micro patterns which may be seen in financial time series. Tick to tick exchange rates are considered as examples. It is seen that variety of patterns evolve through time; and that the scale over which the target markets have no dominant patterns, have decreased steadily over time with the emergence of higher frequency trading.

  9. Certifying separability and entanglement classes of not-completely-permutation-symmetric qudit states

    NASA Astrophysics Data System (ADS)

    Barasiński, Artur; Nowotarski, Mateusz

    2016-12-01

    We analyze the entanglement properties for the not-completely-permutation-symmetric states of quantum systems composed of two subsystems with an equal but arbitrary finite local Hilbert space dimension. We investigate both pure and mixed states with such a symmetry obtained by relaxing the symmetry requirement of the axisymmetric states. For such states we discuss the entanglement classification with respect to stochastic local operations and classical communication and establish the entanglement quantitatively by means of concurrence and negativity. In particular, we determine the separability criterion in the frame of various methods, including the k -positive map witness, optimal Schmidt-number witnesses, and entanglement measures.

  10. A PSO-based hybrid metaheuristic for permutation flowshop scheduling problems.

    PubMed

    Zhang, Le; Wu, Jinnan

    2014-01-01

    This paper investigates the permutation flowshop scheduling problem (PFSP) with the objectives of minimizing the makespan and the total flowtime and proposes a hybrid metaheuristic based on the particle swarm optimization (PSO). To enhance the exploration ability of the hybrid metaheuristic, a simulated annealing hybrid with a stochastic variable neighborhood search is incorporated. To improve the search diversification of the hybrid metaheuristic, a solution replacement strategy based on the pathrelinking is presented to replace the particles that have been trapped in local optimum. Computational results on benchmark instances show that the proposed PSO-based hybrid metaheuristic is competitive with other powerful metaheuristics in the literature.

  11. Brain Computation Is Organized via Power-of-Two-Based Permutation Logic

    PubMed Central

    Xie, Kun; Fox, Grace E.; Liu, Jun; Lyu, Cheng; Lee, Jason C.; Kuang, Hui; Jacobs, Stephanie; Li, Meng; Liu, Tianming; Song, Sen; Tsien, Joe Z.

    2016-01-01

    There is considerable scientific interest in understanding how cell assemblies—the long-presumed computational motif—are organized so that the brain can generate intelligent cognition and flexible behavior. The Theory of Connectivity proposes that the origin of intelligence is rooted in a power-of-two-based permutation logic (N = 2i–1), producing specific-to-general cell-assembly architecture capable of generating specific perceptions and memories, as well as generalized knowledge and flexible actions. We show that this power-of-two-based permutation logic is widely used in cortical and subcortical circuits across animal species and is conserved for the processing of a variety of cognitive modalities including appetitive, emotional and social information. However, modulatory neurons, such as dopaminergic (DA) neurons, use a simpler logic despite their distinct subtypes. Interestingly, this specific-to-general permutation logic remained largely intact although NMDA receptors—the synaptic switch for learning and memory—were deleted throughout adulthood, suggesting that the logic is developmentally pre-configured. Moreover, this computational logic is implemented in the cortex via combining a random-connectivity strategy in superficial layers 2/3 with nonrandom organizations in deep layers 5/6. This randomness of layers 2/3 cliques—which preferentially encode specific and low-combinatorial features and project inter-cortically—is ideal for maximizing cross-modality novel pattern-extraction, pattern-discrimination and pattern-categorization using sparse code, consequently explaining why it requires hippocampal offline-consolidation. In contrast, the nonrandomness in layers 5/6—which consists of few specific cliques but a higher portion of more general cliques projecting mostly to subcortical systems—is ideal for feedback-control of motivation, emotion, consciousness and behaviors. These observations suggest that the brain’s basic computational

  12. Permutation Min-Entropy and Statistical Complexity Analysis of Electricity Spot Price

    NASA Astrophysics Data System (ADS)

    Fan, Qingju; Li, Dan

    2015-10-01

    In this study, we investigate the subtle temporal dynamics of California 1999-2000 spot price series based on permutation min-entropy (PME) and complexity-entropy causality plane. The dynamical transitions of price series are captured and the temporal correlations of price series are also discriminated by the recently introduced PME. Moreover, utilizing the CECP, we provide a refined classification of the monthly price dynamics and obtain an insight into the stochastic nature of price series. The results uncover that the spot price signal presents diverse temporal correlations and exhibits a higher stochastic behavior during the periods of crisis.

  13. Projective ribbon permutation statistics: A remnant of non-Abelian braiding in higher dimensions

    NASA Astrophysics Data System (ADS)

    Freedman, Michael; Hastings, Matthew B.; Nayak, Chetan; Qi, Xiao-Liang; Walker, Kevin; Wang, Zhenghan

    2011-03-01

    In a recent paper, Teo and Kane [Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett.104.046401 104, 046401 (2010)] proposed a three-dimensional (3D) model in which the defects support Majorana fermion zero modes. They argued that exchanging and twisting these defects would implement a set R of unitary transformations on the zero-mode Hilbert space which is a “ghostly” recollection of the action of the braid group on Ising anyons in two dimensions. In this paper, we find the group T2n, which governs the statistics of these defects by analyzing the topology of the space K2n of configurations of 2n defects in a slowly spatially varying gapped free-fermion Hamiltonian: T2n≡π1(K2n). We find that the group T2n=Z×T2nr, where the “ribbon permutation group” T2nr is a mild enhancement of the permutation group S2n: T2nr≡Z2×E((Z2)2n⋊S2n). Here, E((Z2)2n⋊S2n) is the “even part” of (Z2)2n⋊S2n, namely, those elements for which the total parity of the element in (Z2)2n added to the parity of the permutation is even. Surprisingly, R is only a projective representation of T2n, a possibility proposed by Wilczek [e-print arXiv:hep-th/9806228]. Thus, Teo and Kane’s defects realize projective ribbon permutation statistics,” which we show to be consistent with locality. We extend this phenomenon to other dimensions, codimensions, and symmetry classes. We note that our analysis applies to 3D networks of quantum wires supporting Majorana fermions; thus, these networks are not required to be planar. Because it is an essential input for our calculation, we review the topological classification of gapped free-fermion systems and its relation to Bott periodicity.

  14. On the representation matrices of the spin permutation group. [for atomic and molecular electronic structures

    NASA Technical Reports Server (NTRS)

    Wilson, S.

    1977-01-01

    A method is presented for the determination of the representation matrices of the spin permutation group (symmetric group), a detailed knowledge of these matrices being required in the study of the electronic structure of atoms and molecules. The method is characterized by the use of two different coupling schemes. Unlike the Yamanouchi spin algebraic scheme, the method is not recursive. The matrices for the fundamental transpositions can be written down directly in one of the two bases. The method results in a computationally significant reduction in the number of matrix elements that have to be stored when compared with, say, the standard Young tableaux group theoretical approach.

  15. Exposure assessment in auto collision repair shops.

    PubMed

    Bejan, Anca; Brosseau, Lisa M; Parker, David L

    2011-07-01

    Workers in auto collision shops are exposed to a variety of chemical and physical hazards. Previous studies have focused on measuring levels of isocyanates, but little is known about exposures to dust, noise, and solvents. In preparation for an intervention effectiveness study in small collision repair businesses, sampling was conducted on 3 consecutive days in four representative businesses with three to seven employees. Full-shift and task-specific exposures were measured for dust and solvents (for operations other than painting and spray gun cleaning). Full-shift personal exposures and tool-specific noise levels were also evaluated. Samples of banded earplugs were distributed to employees and feedback was collected after 1 week of wear time. Dust and solvent exposures did not exceed the OSHA PELs. Noise exposure doses were below the OSHA PEL; however, 4 of the 18 measurements were in excess of the ACGIH® threshold limit value. The majority of tools generated noise levels above 85 dBA. Air guns, wrenches, cutoff wheels, and air drills generated noise levels with the 5th percentile above 90 dBA. Mean noise levels generated by hammers, grinders, and ratchets were also above 95 dBA. Three pairs of banded earplugs had the best reviews in terms of comfort of use. This study was conducted during a time when all shops reported relatively low production levels. Noise exposure results suggest that it is likely that technicians' 8-hr time-weighted average exposures may be in excess of 85 dBA during periods of higher production, but exposures to dust and solvents are unlikely to approach OSHA exposure limits. These pilot test results will be useful when developing recommendations and technical assistance materials for health and safety interventions in auto collision repair businesses.

  16. A Flexible Computational Framework Using R and Map-Reduce for Permutation Tests of Massive Genetic Analysis of Complex Traits.

    PubMed

    Mahjani, Behrang; Toor, Salman; Nettelblad, Carl; Holmgren, Sverker

    2017-01-01

    In quantitative trait locus (QTL) mapping significance of putative QTL is often determined using permutation testing. The computational needs to calculate the significance level are immense, 10(4) up to 10(8) or even more permutations can be needed. We have previously introduced the PruneDIRECT algorithm for multiple QTL scan with epistatic interactions. This algorithm has specific strengths for permutation testing. Here, we present a flexible, parallel computing framework for identifying multiple interacting QTL using the PruneDIRECT algorithm which uses the map-reduce model as implemented in Hadoop. The framework is implemented in R, a widely used software tool among geneticists. This enables users to rearrange algorithmic steps to adapt genetic models, search algorithms, and parallelization steps to their needs in a flexible way. Our work underlines the maturity of accessing distributed parallel computing for computationally demanding bioinformatics applications through building workflows within existing scientific environments. We investigate the PruneDIRECT algorithm, comparing its performance to exhaustive search and DIRECT algorithm using our framework on a public cloud resource. We find that PruneDIRECT is vastly superior for permutation testing, and perform 2 ×10(5) permutations for a 2D QTL problem in 15 hours, using 100 cloud processes. We show that our framework scales out almost linearly for a 3D QTL search.

  17. Automatic event detection in low SNR microseismic signals based on multi-scale permutation entropy and a support vector machine

    NASA Astrophysics Data System (ADS)

    Jia, Rui-Sheng; Sun, Hong-Mei; Peng, Yan-Jun; Liang, Yong-Quan; Lu, Xin-Ming

    2016-12-01

    Microseismic monitoring is an effective means for providing early warning of rock or coal dynamical disasters, and its first step is microseismic event detection, although low SNR microseismic signals often cannot effectively be detected by routine methods. To solve this problem, this paper presents permutation entropy and a support vector machine to detect low SNR microseismic events. First, an extraction method of signal features based on multi-scale permutation entropy is proposed by studying the influence of the scale factor on the signal permutation entropy. Second, the detection model of low SNR microseismic events based on the least squares support vector machine is built by performing a multi-scale permutation entropy calculation for the collected vibration signals, constructing a feature vector set of signals. Finally, a comparative analysis of the microseismic events and noise signals in the experiment proves that the different characteristics of the two can be fully expressed by using multi-scale permutation entropy. The detection model of microseismic events combined with the support vector machine, which has the features of high classification accuracy and fast real-time algorithms, can meet the requirements of online, real-time extractions of microseismic events.

  18. The permutation entropy rate equals the metric entropy rate for ergodic information sources and ergodic dynamical systems

    NASA Astrophysics Data System (ADS)

    Amigó, José M.; Kennel, Matthew B.; Kocarev, Ljupco

    2005-10-01

    Permutation entropy quantifies the diversity of possible orderings of the values a random or deterministic system can take, as Shannon entropy quantifies the diversity of values. We show that the metric and permutation entropy rates-measures of new disorder per new observed value-are equal for ergodic finite-alphabet information sources (discrete-time stationary stochastic processes). With this result, we then prove that the same holds for deterministic dynamical systems defined by ergodic maps on n-dimensional intervals. This result generalizes a previous one for piecewise monotone interval maps on the real line [C. Bandt, G. Keller, B. Pompe, Entropy of interval maps via permutations, Nonlinearity 15 (2002) 1595-1602.] at the expense of requiring ergodicity and using a definition of permutation entropy rate differing modestly in the order of two limits. The case of non-ergodic finite-alphabet sources is also studied and an inequality developed. Finally, the equality of permutation and metric entropy rates is extended to ergodic non-discrete information sources when entropy is replaced by differential entropy in the usual way.

  19. Interior of building 16 section, view north of machine shop, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Interior of building 16 section, view north of machine shop, showing shrink-fitting a bearing sleeve onto a section of the propeller shaft for the aircraft carrier John F. Kennedy. The lathe on the extreme left of the photograph was used to machine bearing sleeves to final dimensions. This work, in August 1994, was the final major machine shop job done for the U.S. Navy. Photograph by Robert Stewart, August 1994. - Naval Base Philadelphia-Philadelphia Naval Shipyard, Machine Shops, League Island, Philadelphia, Philadelphia County, PA

  20. The case for compulsive shopping as an addiction.

    PubMed

    Hartston, Heidi

    2012-01-01

    Addictive drugs like cocaine, opiates and nicotine, through direct or indirect means, hyperstimulate the dopamine (DA) reward system. Some behaviors, for some people, can have similar effects on the same DA reward circuitry resulting in very similar addictive behavior patterns and consequences. Although the term "addictive" has been used loosely with many behaviors, it may be an appropriate term to describe compulsive shopping. Increased accessibility, hyperstimulating marketing techniques, a loss of the protective delay between impulse and purchase, and overvaluing of the shopping process and objects purchased may all contribute to the potentially addictive nature of shopping.

  1. [Statistical tests in medical research: traditional methods vs. multivariate NPC permutation tests].

    PubMed

    Arboretti, Rosa; Bordignon, Paolo; Corain, Livio; Palermo, Giuseppe; Pesarin, Fortunato; Salmaso, Luigi

    2015-01-01

    Statistical tests in medical research: traditional methods vs. multivariate npc permutation tests.Within medical research, a useful statistical tool is based on hypotheses testing in terms of the so-called null, that is the treatment has no effect, and alternative hypotheses, that is the treatment has some effects. By controlling the risks of wrong decisions, empirical data are used in order to possibly reject the null hypotheses in favour of the alternative, so that demonstrating the efficacy of a treatment of interest. The multivariate permutation tests, based on the nonparametric combination - NPC method, provide an innovative, robust and effective hypotheses testing solution to many real problems that are commonly encountered in medical research when multiple end-points are observed. This paper discusses the various approaches to hypothesis testing and the main advantages of NPC tests, which consist in the fact that they require much less stringent assumptions than traditional statistical tests. Moreover, the related results may be extended to the reference population even in case of selection-bias, that is non-random sampling. In this work, we review and discuss some basic testing procedures along with the theoretical and practical relevance of NPC tests showing their effectiveness in medical research. Within the non-parametric methods, NPC tests represent the current "frontier" of statistical research, but already widely available in the practice of analysis of clinical data.

  2. Structural redesign of lipase B from Candida antarctica by circular permutation and incremental truncation.

    SciTech Connect

    Qian, Zhen; Horton, John R.; Cheng, Xiadong; Lutz, Stefan; Emory

    2009-11-02

    Circular permutation of Candida antarctica lipase B yields several enzyme variants with substantially increased catalytic activity. To better understand the structural and functional consequences of protein termini reorganization, we have applied protein engineering and x-ray crystallography to cp283, one of the most active hydrolase variants. Our initial investigation has focused on the role of an extended surface loop, created by linking the native N- and C-termini, on protein integrity. Incremental truncation of the loop partially compensates for observed losses in secondary structure and the permutants temperature of unfolding. Unexpectedly, the improvements are accompanied by quaternary-structure changes from monomer to dimer. The crystal structures of one truncated variant (cp283{Delta}7) in the apo-form determined at 1.49 {angstrom} resolution and with a bound phosphonate inhibitor at 1.69 {angstrom} resolution confirmed the formation of a homodimer by swapping of the enzyme's 35-residue N-terminal region. Separately, the new protein termini at amino acid positions 282/283 convert the narrow access tunnel to the catalytic triad into a broad crevice for accelerated substrate entry and product exit while preserving the native active-site topology for optimal catalytic turnover.

  3. Structure of AP205 Coat Protein Reveals Circular Permutation in ssRNA Bacteriophages.

    PubMed

    Shishovs, Mihails; Rumnieks, Janis; Diebolder, Christoph; Jaudzems, Kristaps; Andreas, Loren B; Stanek, Jan; Kazaks, Andris; Kotelovica, Svetlana; Akopjana, Inara; Pintacuda, Guido; Koning, Roman I; Tars, Kaspars

    2016-10-23

    AP205 is a single-stranded RNA bacteriophage that has a coat protein sequence not similar to any other known single-stranded RNA phage. Here, we report an atomic-resolution model of the AP205 virus-like particle based on a crystal structure of an unassembled coat protein dimer and a cryo-electron microscopy reconstruction of the assembled particle, together with secondary structure information from site-specific solid-state NMR data. The AP205 coat protein dimer adopts the conserved Leviviridae coat protein fold except for the N-terminal region, which forms a beta-hairpin in the other known single-stranded RNA phages. AP205 has a similar structure at the same location formed by N- and C-terminal beta-strands, making it a circular permutant compared to the other coat proteins. The permutation moves the coat protein termini to the most surface-exposed part of the assembled particle, which explains its increased tolerance to long N- and C-terminal fusions.

  4. Permuting input for more effective sampling of 3D conformer space

    NASA Astrophysics Data System (ADS)

    Carta, Giorgio; Onnis, Valeria; Knox, Andrew J. S.; Fayne, Darren; Lloyd, David G.

    2006-03-01

    SMILES strings and other classic 2D structural formats offer a convenient way to represent molecules as a simplistic connection table, with the inherent advantages of ease of handling and storage. In the context of virtual screening, chemical databases to be screened are often initially represented by canonicalised SMILES strings that can be filtered and pre-processed in a number of ways, resulting in molecules that occupy similar regions of chemical space to active compounds of a therapeutic target. A wide variety of software exists to convert molecules into SMILES format, namely, Mol2smi (Daylight Inc.), MOE (Chemical Computing Group) and Babel (Openeye Scientific Software). Depending on the algorithm employed, the atoms of a SMILES string defining a molecule can be ordered differently. Upon conversion to 3D coordinates they result in the production of ostensibly the same molecule. In this work we show how different permutations of a SMILES string can affect conformer generation, affecting reliability and repeatability of the results. Furthermore, we propose a novel procedure for the generation of conformers, taking advantage of the permutation of the input strings—both SMILES and other 2D formats, leading to more effective sampling of conformation space in output, and also implementing fingerprint and principal component analyses step to post process and visualise the results.

  5. Linear algebra of the permutation invariant Crow-Kimura model of prebiotic evolution.

    PubMed

    Bratus, Alexander S; Novozhilov, Artem S; Semenov, Yuri S

    2014-10-01

    A particular case of the famous quasispecies model - the Crow-Kimura model with a permutation invariant fitness landscape - is investigated. Using the fact that the mutation matrix in the case of a permutation invariant fitness landscape has a special tridiagonal form, a change of the basis is suggested such that in the new coordinates a number of analytical results can be obtained. In particular, using the eigenvectors of the mutation matrix as the new basis, we show that the quasispecies distribution approaches a binomial one and give simple estimates for the speed of convergence. Another consequence of the suggested approach is a parametric solution to the system of equations determining the quasispecies. Using this parametric solution we show that our approach leads to exact asymptotic results in some cases, which are not covered by the existing methods. In particular, we are able to present not only the limit behavior of the leading eigenvalue (mean population fitness), but also the exact formulas for the limit quasispecies eigenvector for special cases. For instance, this eigenvector has a geometric distribution in the case of the classical single peaked fitness landscape. On the biological side, we propose a mathematical definition, based on the closeness of the quasispecies to the binomial distribution, which can be used as an operational definition of the notorious error threshold. Using this definition, we suggest two approximate formulas to estimate the critical mutation rate after which the quasispecies delocalization occurs.

  6. Complexity extraction of electroencephalograms in Alzheimer's disease with weighted-permutation entropy

    NASA Astrophysics Data System (ADS)

    Deng, Bin; Liang, Li; Li, Shunan; Wang, Ruofan; Yu, Haitao; Wang, Jiang; Wei, Xile

    2015-04-01

    In this paper, weighted-permutation entropy (WPE) is applied to investigating the complexity abnormalities of Alzheimer's disease (AD) by analyzing 16-channel electroencephalograph (EEG) signals from 14 severe AD patients and 14 age-matched normal subjects. The WPE values are estimated in the delta, the theta, the alpha, and the beta sub-bands for each channel with an overlapped sliding window. WPE is modified from the permutation entropy (PE), which has been recently suggested as a measurement to extract the complexity of the EEG signals. The advantage of WPE over PE is verified by both the model simulated and the experimental EEG signals. Although the results show that both the average PE and WPE of AD patients are decreased in contrast with the normal group in these four sub-bands, especially in the theta band, WPE can exhibit a better performance in distinguishing the AD patients from the normal controls by the more significant differences in the four sub-bands, which may be attributed to the brain dysfunction. Thus, it suggests that WPE may become a probable useful tool to detect brain dysfunction in AD and it seems to be promising to disclose the abnormalities of brain activity for other neural disease.

  7. Estimating coupling direction between neuronal populations with permutation conditional mutual information.

    PubMed

    Li, Xiaoli; Ouyang, Gaoxiang

    2010-08-15

    To further understand functional connectivity in the brain, we need to identify the coupling direction between neuronal signals recorded from different brain areas. In this paper, we present a novel methodology based on permutation analysis and conditional mutual information for estimation of a directionality index between two neuronal populations. First, the reliability of this method is numerically assessed with a coupled mass neural model; the simulations show that this method is superior to the conditional mutual information method and the Granger causality method for identifying the coupling direction between unidirectional or bidirectional neuronal populations that are generated by the mass neuronal model. The method is also applied to investigate the coupling direction between neuronal populations in CA1 and CA3 in the rat hippocampal tetanus toxin model of focal epilepsy; the propagation direction of the seizure events could be elucidated through this coupling direction estimation method. All together, these results suggest that the permutation conditional mutual information method is a promising technique for estimating directional coupling between mutually interconnected neuronal populations.

  8. Permutation symmetry in spinor quantum gases: selection rules, conservation laws, and correlations.

    PubMed

    Yurovsky, Vladimir A

    2014-11-14

    Many-body systems of identical arbitrary-spin particles, with separable spin and spatial degrees of freedom, are considered. Their eigenstates can be classified by Young diagrams, corresponding to nontrivial permutation symmetries (beyond the conventional paradigm of symmetric-antisymmetric states). The present work obtains the following. (a) Selection rules for additional nonseparable (dependent on spins and coordinates) k-body interactions: the Young diagrams, associated with the initial and final states of a transition, can differ by relocation of no more than k boxes between their rows. (b) Correlation rules in which eigenstate-averaged local correlations of k particles vanish if k exceeds the number of columns (for bosons) or rows (for fermions) in the associated Young diagram. It also elucidates the physical meaning of the quantities conserved due to permutation symmetry-in 1929, Dirac identified those with characters of the symmetric group-relating them to experimentally observable correlations of several particles. The results provide a way to control the formation of entangled states belonging to multidimensional non-Abelian representations of the symmetric group. These states can find applications in quantum computation and metrology.

  9. Complementation and reconstitution of fluorescence from circularly permuted and truncated green fluorescent protein.

    PubMed

    Huang, Yao-ming; Bystroff, Christopher

    2009-02-10

    Green fluorescent protein (GFP) has been used as a proof of concept for a novel "leave-one-out" biosensor design in which a protein that has a segment omitted from the middle of the sequence by circular permutation and truncation binds the missing peptide and reconstitutes its function. Three variants of GFP have been synthesized that are each missing one of the 11 beta-strands from its beta-barrel structure, and in two of the variants, adding the omitted peptide sequence in trans reconstitutes fluorescence. Detailed biochemical analysis indicates that GFP with beta-strand 7 "left out" (t7SPm) exists in a partially unfolded state. The apo form t7SPm binds the free beta-strand 7 peptide with a dissociation constant of approximately 0.5 microM and folds into the native state of GFP, resulting in fluorescence recovery. Folding of t7SPm, both with and without the peptide ligand, is at least a three-state process and has a rate comparable to that of the full-length and unpermuted GFP. The conserved kinetic properties strongly suggest that the rate-limiting steps in the folding pathway have not been altered by circular permutation and truncation in t7SPm. This study shows that structural and functional reconstitution of GFP can occur with a segment omitted from the middle of the chain, and that the unbound form is in a partially unfolded state.

  10. Comparison of Replica-Permutation Molecular Dynamics Simulations with and without Detailed Balance Condition

    NASA Astrophysics Data System (ADS)

    Nishizawa, Hiroaki; Okumura, Hisashi

    2015-07-01

    In the replica-permutation method (RPM), temperatures are not only exchanged between two replicas but also permutated among more than two replicas using the Suwa-Todo algorithm, which minimizes the rejection ratio in Monte Carlo trials. We verify the sampling efficiency of RPM that adopts Suwa-Todo algorithms with and without a detailed balance condition (DBC). To compare these techniques, molecular dynamics simulations of RPM with and without the DBC and the replica-exchange method (REM) were carried out for a chignolin molecule in explicit water. Although no difference in the numbers of folding and unfolding events was observed, the numbers of tunneling events of the two RPM simulations were larger than that of REM. This indicates that the minimization of the rejection ratio by the Suwa-Todo algorithm in RPM realizes efficient sampling. Furthermore, the sampling efficiency was slightly higher in the RPM without the DBC than in that with the DBC. The reason for this difference is also discussed.

  11. A Space–Time Permutation Scan Statistic for Disease Outbreak Detection

    PubMed Central

    2005-01-01

    Background The ability to detect disease outbreaks early is important in order to minimize morbidity and mortality through timely implementation of disease prevention and control measures. Many national, state, and local health departments are launching disease surveillance systems with daily analyses of hospital emergency department visits, ambulance dispatch calls, or pharmacy sales for which population-at-risk information is unavailable or irrelevant. Methods and Findings We propose a prospective space–time permutation scan statistic for the early detection of disease outbreaks that uses only case numbers, with no need for population-at-risk data. It makes minimal assumptions about the time, geographical location, or size of the outbreak, and it adjusts for natural purely spatial and purely temporal variation. The new method was evaluated using daily analyses of hospital emergency department visits in New York City. Four of the five strongest signals were likely local precursors to citywide outbreaks due to rotavirus, norovirus, and influenza. The number of false signals was at most modest. Conclusion If such results hold up over longer study times and in other locations, the space–time permutation scan statistic will be an important tool for local and national health departments that are setting up early disease detection surveillance systems. PMID:15719066

  12. CPred: a web server for predicting viable circular permutations in proteins

    PubMed Central

    Lo, Wei-Cheng; Wang, Li-Fen; Liu, Yen-Yi; Dai, Tian; Hwang, Jenn-Kang; Lyu, Ping-Chiang

    2012-01-01

    Circular permutation (CP) is a protein structural rearrangement phenomenon, through which nature allows structural homologs to have different locations of termini and thus varied activities, stabilities and functional properties. It can be applied in many fields of protein research and bioengineering. The limitation of applying CP lies in its technical complexity, high cost and uncertainty of the viability of the resulting protein variants. Not every position in a protein can be used to create a viable circular permutant, but there is still a lack of practical computational tools for evaluating the positional feasibility of CP before costly experiments are carried out. We have previously designed a comprehensive method for predicting viable CP cleavage sites in proteins. In this work, we implement that method into an efficient and user-friendly web server named CPred (CP site predictor), which is supposed to be helpful to promote fundamental researches and biotechnological applications of CP. The CPred is accessible at http://sarst.life.nthu.edu.tw/CPred. PMID:22693212

  13. VIEW NORTHEASTBUILDING 3 ROPE SHOP (1929) WITH 1885 ROPE ROOM ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW NORTHEAST-BUILDING 3 ROPE SHOP (1929) WITH 1885 ROPE ROOM IN CENTER LEFT - John A. Roebling's Sons Company & American Steel & Wire Company, South Broad, Clark, Elmer, Mott & Hudson Streets, Trenton, Mercer County, NJ

  14. VIEW NORTHEASTBUILDING 3 ROPE SHOP SOUTH SECTION (1929) WITH 1893 ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW NORTHEAST-BUILDING 3 ROPE SHOP SOUTH SECTION (1929) WITH 1893 ROPE ROOM AT LEFT - John A. Roebling's Sons Company & American Steel & Wire Company, South Broad, Clark, Elmer, Mott & Hudson Streets, Trenton, Mercer County, NJ

  15. 7. Detail of the Grant Locomotive Works Erecting Shop looking ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. Detail of the Grant Locomotive Works Erecting Shop looking southwest showing ruined wall and entrance of a single story addition. - Grant Locomotive Works, Market & Spruce Streets, Paterson, Passaic County, NJ

  16. 34. ROUGH GAS MAIN RUNNING SOUTHEAST FROM THE BOP SHOP ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    34. ROUGH GAS MAIN RUNNING SOUTHEAST FROM THE BOP SHOP TO THE DUAL VENTURI GAS WASHERS. - U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

  17. OVERALL VIEW OF SOUTHERN DUCTILE'S PATTERN REPAIR SHOP, SHOWING A ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    OVERALL VIEW OF SOUTHERN DUCTILE'S PATTERN REPAIR SHOP, SHOWING A SPANISH-MADE FORADIA BORING MACHINE IN THE FOREGROUND. - Southern Ductile Casting Company, Mold Making, 2217 Carolina Avenue, Bessemer, Jefferson County, AL

  18. 1. VIEW LOOKING NORTH IN SHOP AREA. BUILDING 15 ON ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. VIEW LOOKING NORTH IN SHOP AREA. BUILDING 15 ON RIGHT, BUILDING 22 ON LEFT, AND BUILDING 1 IN DISTANCE. - Chollas Heights Naval Radio Transmitting Facility, 6410 Zero Road, San Diego, San Diego County, CA

  19. 140. Photograph of a copy of the original shop drawing ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    140. Photograph of a copy of the original shop drawing for the lumber ports added in 1899. Original located at San Francisco Maritime National Historical Park. - Ship BALCLUTHA, 2905 Hyde Street Pier, San Francisco, San Francisco County, CA

  20. 18. MAINTENANCE SHOP, FIRST FLOOR, INTERIOR, ENGINE AND AIRPLANE OVERHAUL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    18. MAINTENANCE SHOP, FIRST FLOOR, INTERIOR, ENGINE AND AIRPLANE OVERHAUL AREAS; LOOKING EAST - Northwest Airways Hangar & Administration Building, 590 Bayfield Street, St. Paul Downtown Airport (Holman), Saint Paul, Ramsey County, MN

  1. 17. MAINTENANCE SHOP, FIRST FLOOR, INTERIOR, ENGINE AND AIRPLANE OVERHAUL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    17. MAINTENANCE SHOP, FIRST FLOOR, INTERIOR, ENGINE AND AIRPLANE OVERHAUL AREAS; LOOKING WEST. - Northwest Airways Hangar & Administration Building, 590 Bayfield Street, St. Paul Downtown Airport (Holman), Saint Paul, Ramsey County, MN

  2. 94. PRINT SHOP PORT LOOKING TO STARBOARD VISIBLE ARE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    94. PRINT SHOP - PORT LOOKING TO STARBOARD VISIBLE ARE ATF CHIEF 17 LITHOGRAPHIC PRINTING PRESS, 1250 MULTILITH PRINTING PRESS AND HOT TYPE PRINTING PRESS. - U.S.S. HORNET, Puget Sound Naval Shipyard, Sinclair Inlet, Bremerton, Kitsap County, WA

  3. Andy Chambers Homestead, Chicken Coop, Saddle Shop, and Granary, looking ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Andy Chambers Homestead, Chicken Coop, Saddle Shop, and Granary, looking northeast - Andy Chambers Homestead, 0.4 mile south of Antelope Flats Road on the east side of Mormon Row Road, Kelly, Teton County, WY

  4. 6. EXTERIOR NORTHEAST CORNER VIEW, FACING SOUTHWEST. CLEAR SHOP OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. EXTERIOR NORTHEAST CORNER VIEW, FACING SOUTHWEST. CLEAR SHOP OF CANOPY 723 AS WELL NORTH FACADES OF ADDITIONS TO BUILDING 10. - NASA Industrial Plant, Maintenance Facility, 12214 Lakewood Boulevard, Downey, Los Angeles County, CA

  5. 7. BUILDING 40. MUSEUM, LIBRARY, PRINTING SHOP, FOUNDRY, VACUUM HEATING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. BUILDING 40. MUSEUM, LIBRARY, PRINTING SHOP, FOUNDRY, VACUUM HEATING SYSTEM. July 31, 1916. - Frankford Arsenal, Building No. 40, South of Tacony Street between Bridge Street & tracks of former Pennsylvania Railroad, Philadelphia, Philadelphia County, PA

  6. 12. Wagon Repair and Paint Shop (second floor in Woodworking ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    12. Wagon Repair and Paint Shop (second floor in Woodworking Mill): view looking east showing paint storage on left and old living quarters on right - Ben Thresher's Mill, State Aid No. 1, Barnet, Caledonia County, VT

  7. 61. VIEW OF WAREHOUSE, MACHINE SHOP, AND HOISTING PLANT, WITH ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    61. VIEW OF WAREHOUSE, MACHINE SHOP, AND HOISTING PLANT, WITH FOREBAY ON RIGHT IN FOREGROUND, Prints No. 158 and 159, August 1903 - Electron Hydroelectric Project, Along Puyallup River, Electron, Pierce County, WA

  8. VIEW OF WEST END OF METAL AND ELECTRIC SHOPS AND ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF WEST END OF METAL AND ELECTRIC SHOPS AND GABLE END OF POWER HOUSE, WITH STACK TO FAR RIGHT. VIEW FROM THE SOUTHWEST - Kekaha Sugar Company, Sugar Mill Building, 8315 Kekaha Road, Kekaha, Kauai County, HI

  9. NORTH WALL OF ELECTRIC SHOP, SUGAR BIN IS RIGHTOFCENTER, OFFICE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    NORTH WALL OF ELECTRIC SHOP, SUGAR BIN IS RIGHT-OF-CENTER, OFFICE AND LABORATORY AT FAR RIGHT. VIEW FROM THE NORTHEAST - Lihue Plantation Company, Sugar Mill Building, Haleko Road, Lihue, Kauai County, HI

  10. VIEW OF STACK WITH AUTOMOBILE AND TRACTOR REPAIR SHOP TO ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF STACK WITH AUTOMOBILE AND TRACTOR REPAIR SHOP TO THE FAR RIGHT. WAREHOUSE WITH ITS RIDGELINE ROTARY VENTS TO RIGHT OF STACK. VIEW FROM THE WEST - Kekaha Sugar Company, Sugar Mill Building, 8315 Kekaha Road, Kekaha, Kauai County, HI

  11. 13. BUILDING 239. ARTILLERY PRIMER SHOP. ADDITIONS AND ALTERATIONS. FIRST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    13. BUILDING 239. ARTILLERY PRIMER SHOP. ADDITIONS AND ALTERATIONS. FIRST FLOOR PLAN AND ELEVATIONS. May 12, 1920. - Frankford Arsenal, Building Nos. 239-239A, Southeast corner of Clay Street & Cray Road, Philadelphia, Philadelphia County, PA

  12. 28. View of construction shops looking west and downstream. Photographer ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    28. View of construction shops looking west and downstream. Photographer unknown, October 29, 1926. Source: MWD. - Waddell Dam, On Agua Fria River, 35 miles northwest of Phoenix, Phoenix, Maricopa County, AZ

  13. 18. Blacksmith Shop (first floor): view looking north; trip hammer ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    18. Blacksmith Shop (first floor): view looking north; trip hammer and coal bin in background, shears and swage block in foreground - Ben Thresher's Mill, State Aid No. 1, Barnet, Caledonia County, VT

  14. VIEW OF GROUND SUPPORT EQUIPMENT SHOP, ROOM 104, FACING NORTH ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF GROUND SUPPORT EQUIPMENT SHOP, ROOM 104, FACING NORTH - Cape Canaveral Air Force Station, Launch Complex 34, Operations Support Building, Freedom Road, Southwest of Launch Stand CX-34, Cape Canaveral, Brevard County, FL

  15. Looking Northeast at Southwest End of Maintenance Shop with Milling ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Looking Northeast at Southwest End of Maintenance Shop with Milling Machines, Hoist, Electrical Boxes in Recycle Recovery Building - Hematite Fuel Fabrication Facility, Recycle Recovery Building, 3300 State Road P, Festus, Jefferson County, MO

  16. 15. View east of original machine shop area. Lake ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    15. View east of original machine shop area. - Lake Whitney Water Filtration Plant, Armory Street Pumphouse, North side of Armory Street between Edgehill Road & Whitney Avenue, Hamden, New Haven County, CT

  17. 14. View of original machine shop area in Armory Street ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    14. View of original machine shop area in Armory Street Pump House. - Lake Whitney Water Filtration Plant, Armory Street Pumphouse, North side of Armory Street between Edgehill Road & Whitney Avenue, Hamden, New Haven County, CT

  18. 9. LOOKING NORTH IN BOP SHOP ON SERVICE FLOOR OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. LOOKING NORTH IN BOP SHOP ON SERVICE FLOOR OF FURNACE AISLE AT FUME HOOD SHOWING COLLAR AND ENTRANCE FOR OXYGEN LANCES. - U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

  19. 10. LOOKING SOUTH IN BOP SHOP AT FUME HOOD AND ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. LOOKING SOUTH IN BOP SHOP AT FUME HOOD AND SPARE OXYGEN LANCES ON THE SERVICE FLOOR OF THE FURNACE AISLE. - U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

  20. 73. INTERIOR VIEW OF MACHINE SHOP LOOKING EAST, NOTE THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    73. INTERIOR VIEW OF MACHINE SHOP LOOKING EAST, NOTE THE MAIN DRIVE SHAFT ON THE CEILING AND DRIVE BELTS TO THE MACHINERY. MAY 8, 1919. - United States Nitrate Plant No. 2, Reservation Road, Muscle Shoals, Muscle Shoals, Colbert County, AL

  1. Teaching E-Commerce by Shopping Only Online.

    ERIC Educational Resources Information Center

    Mangan, Catherine S.

    2000-01-01

    Describes the experiences of Bruce D. Weinberg, an assistant professor of marketing at Boston University (Massachusetts), who is doing all his shopping via the Internet to demonstrate to students what works and what fails when selling in cyberspace. (DB)

  2. Consumer's Online Shopping Influence Factors and Decision-Making Model

    NASA Astrophysics Data System (ADS)

    Yan, Xiangbin; Dai, Shiliang

    Previous research on online consumer behavior has mostly been confined to the perceived risk which is used to explain those barriers for purchasing online. However, perceived benefit is another important factor which influences consumers’ decision when shopping online. As a result, an integrated consumer online shopping decision-making model is developed which contains three elements—Consumer, Product, and Web Site. This model proposed relative factors which influence the consumers’ intention during the online shopping progress, and divided them into two different dimensions—mentally level and material level. We tested those factors with surveys, from both online volunteers and offline paper surveys with more than 200 samples. With the help of SEM, the experimental results show that the proposed model and method can be used to analyze consumer’s online shopping decision-making process effectively.

  3. 9. NORTH SIDE, FROM A BOAT. THE TWO BENDING SHOP ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. NORTH SIDE, FROM A BOAT. THE TWO BENDING SHOP AND OVEN BUILDINGS ARE VISIBLE AT THE RIGHT. - United Engineering Company Shipyard, Engineering Building, 2900 Main Street, Alameda, Alameda County, CA

  4. 53. BUILDING NO. 326, FE MAINTENANCE SHOP (SHELL SANDBLASTING), LOOKING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    53. BUILDING NO. 326, FE MAINTENANCE SHOP (SHELL SANDBLASTING), LOOKING AT NORTHEAST END OF BUILDING. BUILDING NO. 302 ON RIGHT. - Picatinny Arsenal, State Route 15 near I-80, Dover, Morris County, NJ

  5. Looking north at roundhouse and car repair shop with riggers ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Looking north at roundhouse and car repair shop with riggers building on right in background. "1906" Construction date visible under gable. - U.S. Steel National Tube Works, Auxiliary Buildings, Along Monongahela River, McKeesport, Allegheny County, PA

  6. Apparel shopping behavior of elderly men and women.

    PubMed

    Chowdhary, U

    1989-06-01

    70 interested elderly (65 yr. and over) men and women participated in an investigation of older consumers' apparel-shopping behavior and satisfactions and dissatisfactions with available clothing and facilities. Analysis showed that the participants considered shopping ease, wide variety, and label/brand as some of the important factors while shopping for clothes. The respondents were satisfied with good selection, closeness of the mall, and reasonable sales. However, their dissatisfactions ranged from service to fit and size, youthful styles, and abundance of imported clothing. In-store displays, mail order catalogs, and window shopping were the most commonly used sources of apparel information. Several implications of the findings were discussed and suggestions for further research were made.

  7. EAST ELEVATION OF THE ELECTRIC SHOP. BOILING HOUSE AND POWER ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    EAST ELEVATION OF THE ELECTRIC SHOP. BOILING HOUSE AND POWER HOUSE WING IN THE BACKGROUND. VIEW FROM THE SOUTHEAST - Lihue Plantation Company, Sugar Mill Building, Haleko Road, Lihue, Kauai County, HI

  8. 40. William E. Barrett, Photographer, 1973. SHOP, YPOLE, MR. WEST'S ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    40. William E. Barrett, Photographer, 1973. SHOP, Y-POLE, MR. WEST'S HOUSE AND POLE SWELL - West Oil Company Endless Wire Pumping Station, U.S. Route 50 (Volcano vicinity), Petroleum, Ritchie County, WV

  9. Consumer Roulette: The Shopping Patterns of Mentally Retarded Persons.

    ERIC Educational Resources Information Center

    Williams, Randall D.; Ewing, Sheryl

    1981-01-01

    To develop information regarding the commercial product purchasing behavior of mildly mentally retarded adults, 11 participants were included in a mock shopping exercise. The results indicated several serious deficiencies in the purchasing strategies of the participants. (Author/SB)

  10. 10. TRUSS DETAILS, BRIDGE OVER SCOTT SWAMP (Shop Drawing, Berlin ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    10. TRUSS DETAILS, BRIDGE OVER SCOTT SWAMP (Shop Drawing, Berlin Construction Company) Sheet 1 of 2, July 5, 1927 - Bridge No. 475, Spanning Pequabuck River on U.S. Route 6, Farmington, Hartford County, CT

  11. 11. FLOOR SYSTEM DETAILS, BRIDGE OVER SCOTT SWAMP (Shop Drawing, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    11. FLOOR SYSTEM DETAILS, BRIDGE OVER SCOTT SWAMP (Shop Drawing, Berlin Construction Company) Sheet 2 of 2, July 9, 1927 - Bridge No. 475, Spanning Pequabuck River on U.S. Route 6, Farmington, Hartford County, CT

  12. SITE VIEW, FROM LEFT, BUILDING 306 (STORAGE AND CARPENTRY SHOPS), ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    SITE VIEW, FROM LEFT, BUILDING 306 (STORAGE AND CARPENTRY SHOPS), BUILDING 303 (GARAGE), BUILDING 304 (PATTERN STORAGE), BUILDING 305 (PAINT SHED), BUILDING 309. LOOKING WEST. - Illinois Waterway, Project Office, 257 Grant Street, Peoria, Peoria County, IL

  13. 42. VIEW TO SOUTH AT FIRST FLOOR MACHINE SHOP: Photocopy ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    42. VIEW TO SOUTH AT FIRST FLOOR MACHINE SHOP: Photocopy of December 1964 photograph showing the machine shop on the first floor of the powerhouse. View towards the south along the east wall of the building. Note the abundance of belt-driven machine tools, several of which are still in use. - San Francisco Cable Railway, Washington & Mason Streets, San Francisco, San Francisco County, CA

  14. Scheduling a Medium-Sized Manufacturing Shop: A Simulation Study

    DTIC Science & Technology

    1993-09-01

    The original aim of this research was to ex=aine the hybrid of management techniques used by the CNC machine shop to accomplish its metamorphosis...examine the management techniques in March 1993, 1 was somewhat surprised by the lack of a well-defined scheduling system to handle the manufacturing...see in an actual manufacturing environment *hose scheduling and shop floor control techniques taught in production oriented courses. In fact, I was

  15. ShopGirls Shine in Eco-Marathon

    ERIC Educational Resources Information Center

    Stowell, Shante

    2011-01-01

    The ShopGirls of Granite Falls (WA) High School are the first-ever all-female team to successfully design, build, and race a prototype diesel car in the Shell Eco-marathon. The team took first place in the diesel fuel-efficiency category with a vehicle that achieved 470 miles per gallon! The idea for the ShopGirls came when Vervia Gabriel, career…

  16. FME Carpentry Shop Keeps Facility in Good Repair | Poster

    Cancer.gov

    By Peggy Pearl, Contributing Writer Did you know that what most people call the Carpentry Shop at Facilities Maintenance and Engineering (FME) is actually made up of the three crafts, woodcrafting, painting, and locksmithing?  On any given day, throughout the Frederick National Laboratory campus, you may find shop staff utilizing an assortment of tools and a wide range of skills on projects ranging from simple maintenance to complete renovations.

  17. On the linear classification of even and odd permutation matrices and the complexity of computing the permanent

    NASA Astrophysics Data System (ADS)

    Babenko, A. V.; Vyalyi, M. N.

    2017-02-01

    The problem of linear classification of the parity of permutation matrices is studied. This problem is related to the analysis of complexity of a class of algorithms designed for computing the permanent of a matrix that generalizes the Kasteleyn algorithm. Exponential lower bounds on the magnitude of the coefficients of the functional that classifies the even and odd permutation matrices in the case of the field of real numbers and similar linear lower bounds on the rank of the classifying map for the case of the field of characteristic 2 are obtained.

  18. The role of food shopping in later life.

    PubMed

    Pettigrew, Simone; Worrall, Caitlin; Biagioni, Nicole; Talati, Zenobia; Jongenelis, Michelle

    2017-04-01

    By the time they reach retirement, individuals are typically highly experienced in sourcing food products and they have strong familiarity with food retailing environments. To investigate the ongoing role of food shopping in later life, the present study explored seniors' attitudes to food shopping and their food-selection behaviours through the lens of their broader lifestyles. The aim was to provide insights of relevance to the development of future efforts to optimise seniors' food shopping experiences and nutrition-related outcomes. Interviews were conducted with 75 Western Australians aged 60 + years to discuss food shopping in the context of their day-to-day lives. The sample was comprised mainly of women (n = 64) and the average age was 74 years. In general, food shopping was perceived to be a manageable but mundane part of life. The findings suggest that there has been an improvement in food retailing practices because many of the numerous areas of concern identified in previous research conducted in this geographical location a decade ago were not nominated as relevant by the interviewees. Instead, food-related issues reported to be most problematic included the difficulties associated with sourcing affordable food products that had been produced locally and that did not contain unacceptable food additives. Seniors' food shopping concerns thus appear to have changed from functional aspects of the physical store environment to product attributes that reflect the increasing industrialisation of the food industry.

  19. Cue reactivity towards shopping cues in female participants.

    PubMed

    Starcke, Katrin; Schlereth, Berenike; Domass, Debora; Schöler, Tobias; Brand, Matthias

    2013-03-01

    Background and aims It is currently under debate whether pathological buying can be considered as a behavioural addiction. Addictions have often been investigated with cue-reactivity paradigms to assess subjective, physiological and neural craving reactions. The current study aims at testing whether cue reactivity towards shopping cues is related to pathological buying tendencies. Methods A sample of 66 non-clinical female participants rated shopping related pictures concerning valence, arousal, and subjective craving. In a subgroup of 26 participants, electrodermal reactions towards those pictures were additionally assessed. Furthermore, all participants were screened concerning pathological buying tendencies and baseline craving for shopping. Results Results indicate a relationship between the subjective ratings of the shopping cues and pathological buying tendencies, even if baseline craving for shopping was controlled for. Electrodermal reactions were partly related to the subjective ratings of the cues. Conclusions Cue reactivity may be a potential correlate of pathological buying tendencies. Thus, pathological buying may be accompanied by craving reactions towards shopping cues. Results support the assumption that pathological buying can be considered as a behavioural addiction. From a methodological point of view, results support the view that the cue-reactivity paradigm is suited for the investigation of craving reactions in pathological buying and future studies should implement this paradigm in clinical samples.

  20. AmIQuin - An Ambient Mannequin for the Shopping Environment

    NASA Astrophysics Data System (ADS)

    Meschtscherjakov, Alexander; Reitberger, Wolfgang; Mirlacher, Thomas; Huber, Hermann; Tscheligi, Manfred

    We present AmIQuin, a virtual mannequin, which leverages an Ambient Intelligence (AmI) system within a shopping environment. AmIQuin is designed to replace a traditional shop window mannequin in order to enhance a customer's shopping experience by reacting to the customer's presence and presenting personalized information. The AmIQuin is implemented as 3D graphic representation of a mannequin displayed on a large screen situated in a shop window. In this paper, we describe the first cycle of an iterative User-Centered Design (UCD) process including the technical implementation of an AmIQuin prototype, along with an initial three days field study. The first prototypical version of the virtual mannequin presented in this paper moves its head or full body towards the beholder in response to recognizing a human face looking at it. We describe technical challenges of deploying an AmI application in the field. Our findings indicate the usefulness of an AmI application within the shopping context and give insights on customers' attitudes towards shop windows in general and the AmIQuin in particular. Furthermore, the study results reveal customers' wishes for future versions of the AmIQuin.

  1. Assessing product image quality for online shopping

    NASA Astrophysics Data System (ADS)

    Goswami, Anjan; Chung, Sung H.; Chittar, Naren; Islam, Atiq

    2012-01-01

    Assessing product-image quality is important in the context of online shopping. A high quality image that conveys more information about a product can boost the buyer's confidence and can get more attention. However, the notion of image quality for product-images is not the same as that in other domains. The perception of quality of product-images depends not only on various photographic quality features but also on various high level features such as clarity of the foreground or goodness of the background etc. In this paper, we define a notion of product-image quality based on various such features. We conduct a crowd-sourced experiment to collect user judgments on thousands of eBay's images. We formulate a multi-class classification problem for modeling image quality by classifying images into good, fair and poor quality based on the guided perceptual notions from the judges. We also conduct experiments with regression using average crowd-sourced human judgments as target. We compute a pseudo-regression score with expected average of predicted classes and also compute a score from the regression technique. We design many experiments with various sampling and voting schemes with crowd-sourced data and construct various experimental image quality models. Most of our models have reasonable accuracies (greater or equal to 70%) on test data set. We observe that our computed image quality score has a high (0.66) rank correlation with average votes from the crowd sourced human judgments.

  2. Permutation Tests of Hierarchical Cluster Analyses of Carrion Communities and Their Potential Use in Forensic Entomology.

    PubMed

    van der Ham, Joris L

    2016-05-19

    Forensic entomologists can use carrion communities' ecological succession data to estimate the postmortem interval (PMI). Permutation tests of hierarchical cluster analyses of these data provide a conceptual method to estimate part of the PMI, the post-colonization interval (post-CI). This multivariate approach produces a baseline of statistically distinct clusters that reflect changes in the carrion community composition during the decomposition process. Carrion community samples of unknown post-CIs are compared with these baseline clusters to estimate the post-CI. In this short communication, I use data from previously published studies to demonstrate the conceptual feasibility of this multivariate approach. Analyses of these data produce series of significantly distinct clusters, which represent carrion communities during 1- to 20-day periods of the decomposition process. For 33 carrion community samples, collected over an 11-day period, this approach correctly estimated the post-CI within an average range of 3.1 days.

  3. Assessing the performance of spectroscopic models for cancer diagnostics using cross-validation and permutation testing

    NASA Astrophysics Data System (ADS)

    Lloyd, G. R.; Hutchings, J.; Almond, L. M.; Barr, H.; Kendall, C.; Stone, N.

    2012-01-01

    Multivariate classifiers (such as Linear Discriminant Analysis, Support Vector Machines etc) are known to be useful tools for making diagnostic decisions based on spectroscopic data. However, robust techniques for assessing their performance (e.g. by sensitivity and specificity) are vital if the application of these methods is to be successful in the clinic. In this work the application of repeated cross-validation for estimating confidence intervals for sensitivity and specificity of multivariate classifiers is presented. Furthermore, permutation testing is presented as a suitable technique for estimating the probability of obtaining the observed sensitivity and specificity by chance. Both approaches are demonstrated through their application to a Raman spectroscopic model of gastrointestinal cancer.

  4. Construction of mutually unbiased maximally entangled bases through permutations of Hadamard matrices

    NASA Astrophysics Data System (ADS)

    xu, Dengming

    2017-03-01

    We construct mutually unbiased maximally entangled bases (MUMEBs) in bipartite system C^d⊗ C^d (d≥ 3) with d a power of a prime number. Precisely, by means of permutation matrices and Hadamard matrices, we construct 2(d-1) MUMEBs in C^d⊗ C}^d. It follows that M(d,d)≥ 2(d-1), which is twice the number given in Liu et al. (2016), where M( d, d) denotes the maximal size of all sets of MUMEBs in C^d⊗ C}^d. In addition, let q be another power of a prime number, we construct MUMEBs in C^d⊗ C^{qd} from those in C^d⊗ C^d by the use of the tensor product of unitary matrices.

  5. Permutation methods for the structured exploratory data analysis (SEDA) of familial trait values.

    PubMed

    Karlin, S; Williams, P T

    1984-07-01

    A collection of functions that contrast familial trait values between and across generations is proposed for studying transmission effects and other collateral influences in nuclear families. Two classes of structured exploratory data analysis (SEDA) statistics are derived from ratios of these functions. SEDA-functionals are the empirical cumulative distributions of the ratio of the two contrasts computed within each family. SEDA-indices are formed by first averaging the numerator and denominator contrasts separately over the population and then forming their ratio. The significance of SEDA results are determined by a spectrum of permutation techniques that selectively shuffle the trait values across families. The process systematically alters certain family structure relationships while keeping other familial relationships intact. The methodology is applied to five data examples of plasma total cholesterol concentrations, reported height values, dermatoglyphic pattern intensity index scores, measurements of dopamine-beta-hydroxylase activity, and psychometric cognitive test results.

  6. Permutation methods for the structured exploratory data analysis (SEDA) of familial trait values.

    PubMed Central

    Karlin, S; Williams, P T

    1984-01-01

    A collection of functions that contrast familial trait values between and across generations is proposed for studying transmission effects and other collateral influences in nuclear families. Two classes of structured exploratory data analysis (SEDA) statistics are derived from ratios of these functions. SEDA-functionals are the empirical cumulative distributions of the ratio of the two contrasts computed within each family. SEDA-indices are formed by first averaging the numerator and denominator contrasts separately over the population and then forming their ratio. The significance of SEDA results are determined by a spectrum of permutation techniques that selectively shuffle the trait values across families. The process systematically alters certain family structure relationships while keeping other familial relationships intact. The methodology is applied to five data examples of plasma total cholesterol concentrations, reported height values, dermatoglyphic pattern intensity index scores, measurements of dopamine-beta-hydroxylase activity, and psychometric cognitive test results. PMID:6475959

  7. Multivariate permutation entropy and its application for complexity analysis of chaotic systems

    NASA Astrophysics Data System (ADS)

    He, Shaobo; Sun, Kehui; Wang, Huihai

    2016-11-01

    To measure the complexity of multivariate systems, the multivariate permutation entropy (MvPE) algorithm is proposed. It is employed to measure complexity of multivariate system in the phase space. As an application, MvPE is applied to analyze the complexity of chaotic systems, including hyperchaotic Hénon map, fractional-order simplified Lorenz system and financial chaotic system. Results show that MvPE algorithm is effective for analyzing the complexity of the multivariate systems. It also shows that fractional-order system does not become more complex with derivative order varying. Compared with PE, MvPE has better robustness for noise and sampling interval, and the results are not affected by different normalization methods.

  8. Improved Potential Energy Surface of Ozone Constructed Using the Fitting by Permutationally Invariant Polynomial Function

    DOE PAGES

    Ayouz, Mehdi; Babikov, Dmitri

    2012-01-01

    New global potential energy surface for the ground electronic state of ozone is constructed at the complete basis set level of the multireference configuration interaction theory. A method of fitting the data points by analytical permutationally invariant polynomial function is adopted. A small set of 500 points is preoptimized using the old surface of ozone. In this procedure the positions of points in the configuration space are chosen such that the RMS deviation of the fit is minimized. New ab initio calculations are carried out at these points and are used to build new surface. Additional points are addedmore » to the vicinity of the minimum energy path in order to improve accuracy of the fit, particularly in the region where the surface of ozone exhibits a shallow van der Waals well. New surface can be used to study formation of ozone at thermal energies and its spectroscopy near the dissociation threshold.« less

  9. An image encryption scheme using nonlinear inter-pixel computing and swapping based permutation approach

    NASA Astrophysics Data System (ADS)

    Chen, Jun-xin; Zhu, Zhi-liang; Fu, Chong; Zhang, Li-bo; Zhang, Yushu

    2015-06-01

    Recently, intrinsic image features in bit-level (e.g., higher bit-planes carry more information than lower bit-planes) have been widely accepted for building bit-level image cryptosystems. Higher bit-planes are generally handled with enhanced encryption, whereas light attention is paid to lower ones. However, the existing achievements on bit-level image features are solely based on the analyses of standard test images, and they do not hold for some special images, such as medical images. When ciphering these images, such cryptosystems may leak the important information of lower bit-planes, and other inadaptability also exists. In this paper, we firstly give out the inapplicability of the existing bit-level achievements, and then a novel chaos-based image encryption scheme using nonlinear inter-pixel computing and swapping based permutation approach is presented. Simulations and extensive security analyses demonstrate the high level of security for practical secret applications.

  10. SOME CODES WHICH ARE INVARIENT UNDER A DOUBLY-TRANSITIVE PERMUTATION GROUP AND THEIR CONNECTION WITH BALANCED INCOMPLETE BLOCK DESIGNS

    DTIC Science & Technology

    If a binary code is invariant under a doubly-transitive permutation group, then the set of all code words of weight j forms a balanced incomplete...codes are properly arranged, and if the first digit is omitted, then all Reed-Muller codes are cyclic.

  11. Some modifications of Sarrus's rule method via permutation for finding determinant of 4 by 4 square matrix

    NASA Astrophysics Data System (ADS)

    Karim, Sharmila; Ibrahim, Haslinda; Omar, Zurni

    2016-10-01

    Sarrus rule is well known method for finding determinant of square matrix. This method is also known as a cross multiplication method. However this method is not applicable for n > 3. With this motivation, we attempt to extend this method by employing some modifications using permutation for the case of 4 by 4 square matrix

  12. Expansion of polynomial Lie group integrals in terms of certain maps on surfaces, and factorizations of permutations

    NASA Astrophysics Data System (ADS)

    Novaes, Marcel

    2017-02-01

    Using the diagrammatic approach to integrals over Gaussian random matrices, we find a representation for polynomial Lie group integrals as infinite sums over certain maps on surfaces. The maps involved satisfy a specific condition: they have some marked vertices, and no closed walks that avoid these vertices. We also formulate our results in terms of permutations, arriving at new kinds of factorization problems.

  13. Permutation Lempel-Ziv complexity measure of electroencephalogram in GABAergic anaesthetics.

    PubMed

    Bai, Yang; Liang, Zhenhu; Li, Xiaoli; Voss, Logan J; Sleigh, Jamie W

    2015-12-01

    Monitoring the brain state in anaesthesia is crucial for clinical doctors. In this study, we propose a novel nonlinear method, the permutation Lempel-Ziv complexity (PLZC) index, which describes the complexity in the electroencephalographic (EEG) signal to quantify the effect of GABAergic anaesthetics on brain activities.We applied the PLZC to two EEG data sets that were recorded under sevoflurane and propofol anaesthesia. The results are compared with traditional mean value-based Lempel-Ziv complexity (LZC), permutation entropy (PE), composite PE index (CPEI), response entropy (RE), state entropy (SE) and bispectral index (BIS) or SynchFastSlow (SFS, derived from BIS). Pharmacokinetic/pharmacodynamic (PK/PD) modelling and prediction probability (Pk) were used to assess the performance of the proposed method for tracking GABAergic anaesthetic concentrations.We found that PLZC correlates closely with the anaesthetic drug effect. When applied in sevoflurane anaesthesia, the coefficient of determination R2 between the PLZC values and the sevoflurane effect site concentrations was (0.90 ± 0.07), mean  ±  standard deviation), and the prediction probability Pk was (0.85 ± 0.04). These values were higher than those for the other indices. While in propofol anaesthesia, the value of R2 between PLZC and the effect site concentrations was (0.89 +/- 0.07), and the Pk was (0.86 +/- 0.28), which were close to those for CPEI but better than those for the others.PLZC based on electroencephalogram signals can be used as a new index to characterize the depth of anaesthesia. This index outperformed LZC, PE, CPEI, RE, SE, and BIS or SFS in tracking drug concentration changes during GABAergic anaesthetics.PLZC is a potentially superior method for applications in intra-operative monitoring.

  14. Structural consequences of cutting a binding loop: two circularly permuted variants of streptavidin

    SciTech Connect

    Le Trong, Isolde; Chu, Vano; Xing, Yi; Lybrand, Terry P.; Stayton, Patrick S.; Stenkamp, Ronald E.

    2013-06-01

    The crystal structures of two circularly permuted streptavidins probe the role of a flexible loop in the tight binding of biotin. Molecular-dynamics calculations for one of the mutants suggests that increased fluctuations in a hydrogen bond between the protein and biotin are associated with cleavage of the binding loop. Circular permutation of streptavidin was carried out in order to investigate the role of a main-chain amide in stabilizing the high-affinity complex of the protein and biotin. Mutant proteins CP49/48 and CP50/49 were constructed to place new N-termini at residues 49 and 50 in a flexible loop involved in stabilizing the biotin complex. Crystal structures of the two mutants show that half of each loop closes over the binding site, as observed in wild-type streptavidin, while the other half adopts the open conformation found in the unliganded state. The structures are consistent with kinetic and thermodynamic data and indicate that the loop plays a role in enthalpic stabilization of the bound state via the Asn49 amide–biotin hydrogen bond. In wild-type streptavidin, the entropic penalties of immobilizing a flexible portion of the protein to enhance binding are kept to a manageable level by using a contiguous loop of medium length (six residues) which is already constrained by its anchorage to strands of the β-barrel protein. A molecular-dynamics simulation for CP50/49 shows that cleavage of the binding loop results in increased structural fluctuations for Ser45 and that these fluctuations destabilize the streptavidin–biotin complex.

  15. New gridded daily climatology of Finland: Permutation-based uncertainty estimates and temporal trends in climate

    NASA Astrophysics Data System (ADS)

    Aalto, Juha; Pirinen, Pentti; Jylhä, Kirsti

    2016-04-01

    Long-term time series of key climate variables with a relevant spatiotemporal resolution are essential for environmental science. Moreover, such spatially continuous data, based on weather observations, are commonly used in, e.g., downscaling and bias correcting of climate model simulations. Here we conducted a comprehensive spatial interpolation scheme where seven climate variables (daily mean, maximum, and minimum surface air temperatures, daily precipitation sum, relative humidity, sea level air pressure, and snow depth) were interpolated over Finland at the spatial resolution of 10 × 10 km2. More precisely, (1) we produced daily gridded time series (FMI_ClimGrid) of the variables covering the period of 1961-2010, with a special focus on evaluation and permutation-based uncertainty estimates, and (2) we investigated temporal trends in the climate variables based on the gridded data. National climate station observations were supplemented by records from the surrounding countries, and kriging interpolation was applied to account for topography and water bodies. For daily precipitation sum and snow depth, a two-stage interpolation with a binary classifier was deployed for an accurate delineation of areas with no precipitation or snow. A robust cross-validation indicated a good agreement between the observed and interpolated values especially for the temperature variables and air pressure, although the effect of seasons was evident. Permutation-based analysis suggested increased uncertainty toward northern areas, thus identifying regions with suboptimal station density. Finally, several variables had a statistically significant trend indicating a clear but locally varying signal of climate change during the last five decades.

  16. Towards an understanding of Internet-based problem shopping behaviour: The concept of online shopping addiction and its proposed predictors

    PubMed Central

    ROSE, SUSAN; DHANDAYUDHAM, ARUN

    2014-01-01

    Background: Compulsive and addictive forms of consumption and buying behaviour have been researched in both business and medical literature. Shopping enabled via the Internet now introduces new features to the shopping experience that translate to positive benefits for the shopper. Evidence now suggests that this new shopping experience may lead to problematic online shopping behaviour. This paper provides a theoretical review of the literature relevant to online shopping addiction (OSA). Based on this selective review, a conceptual model of OSA is presented. Method: The selective review of the literature draws on searches within databases relevant to both clinical and consumer behaviour literature including EBSCO, ABI Pro-Quest, Web of Science – Social Citations Index, Medline, PsycINFO and Pubmed. The article reviews current thinking on problematic, and specifically addictive, behaviour in relation to online shopping. Results: The review of the literature enables the extension of existing knowledge into the Internet-context. A conceptual model of OSA is developed with theoretical support provided for the inclusion of 7 predictor variables: low self-esteem, low self-regulation; negative emotional state; enjoyment; female gender; social anonymity and cognitive overload. The construct of OSA is defined and six component criteria of OSA are proposed based on established technological addiction criteria. Conclusions: Current Internet-based shopping experiences may trigger problematic behaviours which can be classified on a spectrum which at the extreme end incorporates OSA. The development of a conceptual model provides a basis for the future measurement and testing of proposed predictor variables and the outcome variable OSA. PMID:25215218

  17. Self-generated strategic behavior in an ecological shopping task.

    PubMed

    Bottari, Carolina; Wai Shun, Priscilla Lam; Dorze, Guylaine Le; Gosselin, Nadia; Dawson, Deirdre

    2014-01-01

    OBJECTIVES. The use of cognitive strategies optimizes performance in complex everyday tasks such as shopping. This exploratory study examined the cognitive strategies people with traumatic brain injury (TBI) effectively use in an unstructured, real-world situation. METHOD. A behavioral analysis of the self-generated strategic behaviors of 5 people with severe TBI using videotaped sessions of an ecological shopping task (Instrumental Activities of Daily Living Profile) was performed. RESULTS. All participants used some form of cognitive strategy in an unstructured real-world shopping task, although the number, type, and degree of effectiveness of the strategies in leading to goal attainment varied. The most independent person used the largest number and a broader repertoire of self-generated strategies. CONCLUSION. These results provide initial evidence that occupational therapists should examine the use of self-generated cognitive strategies in real-world contexts as a potential means of guiding therapy aimed at improving independence in everyday activities for people with TBI.

  18. Isocyanate exposures in autobody shop work: the SPRAY study.

    PubMed

    Sparer, Judy; Stowe, Meredith H; Bello, Dhimiter; Liu, Youcheng; Gore, Rebecca J; Youngs, Fred; Cullen, Mark R; Redlich, Carrie A; Woskie, Susan R

    2004-09-01

    Isocyanates, known to cause respiratory sensitization and asthma, are widely used in automotive refinishing where exposures to aliphatic polyisocyanates occur by both inhalation and skin contact. The work reported here, the characterization of isocyanate exposure in the autobody industry, was part of an epidemiologic study of workers in 37 autobody shops in Connecticut. This article describes workplaces, tasks, and controls, and outlines the frequency, duration, and intensity of isocyanate exposures. Personal air samples taken outside of respirators had median concentrations of 66.5 microg NCO/m3 for primer, 134.4 microg (NCO)/m3 for sealer, and 358.5 microg NCO/m3 for clearcoat. Forty-eight percent of primer, 66% of sealer, and 92% of clearcoat samples exceeded the United Kingdom Health and Safety Executive guideline for isocyanate, though none exceeded the National Institute for Occupational Safety and Health (NIOSH) recommended exposure limit for monomer. Nonisocyanate-containing primers and sealers are used in more than half the shops, but nonisocyanate clearcoats are rare. Eighty-two percent of personal samples taken within a spray booth exceeded the U.K. guideline: 81% of those in downdraft spray booths, 74% in semidowndraft booths, and 92% in crossdraft booths. Only 8% of shops reported that spraying is done exclusively in spray booths. All painters wore some type of respirator. In 30% of shops, painters used supplied air respirators; the rest relied on half face organic vapor cartridge respirators with N95 overspray pads. All shops provided some type of gloves, usually latex, not recommended for isocyanate protection. Despite improvements in autobody shop materials, practices, and controls, there are still opportunities for substantial exposures to isocyanates.

  19. Indoor air quality at nine shopping malls in Hong Kong.

    PubMed

    Li, W M; Lee, S C; Chan, L Y

    2001-06-12

    Hong Kong is one of the most attractive shopping paradises in the world. Many local people and international tourists favor to spend their time in shopping malls in Hong Kong. Good indoor air quality is, therefore, very essential to shoppers. In order to characterize the indoor air quality in shopping malls, nine shopping malls in Hong Kong were selected for this study. The indoor air pollutants included carbon dioxide (CO2), carbon monoxide (CO), total hydrocarbons (THC), formaldehyde (HCHO), respirable particulate matter (PM10) and total bacteria count (TBC). More than 40% of the shopping malls had 1-h average CO2 levels above the 1000 ppm of the ASHRAE standard on both weekdays and weekends. Also, they had average weekday PM10 concentrations that exceeded the Hong Kong Indoor Air Quality Objective (HKIAQO). The highest indoor PM10 level at a mall was 380 microg/m3. Of the malls surveyed, 30% had indoor airborne bacteria levels above 1000 cfu/m3 set by the HKIAQO. The elevated indoor CO2 and bacteria levels could result from high occupancy combined with insufficient ventilation. The increased PM10 levels could be probably attributed to illegal smoking inside these establishments. In comparison, the shopping malls that contained internal public transport drop-off areas, where vehicles were parked with idling engines and had major entry doors close to heavy traffic roads had higher CO and PM10 indoor levels. In addition, the extensive use of cooking stoves without adequate ventilation inside food courts could increase indoor CO2, CO and PM10 levels.

  20. Street choice logit model for visitors in shopping districts.

    PubMed

    Kawada, Ko; Yamada, Takashi; Kishimoto, Tatsuya

    2014-09-01

    In this study, we propose two models for predicting people's activity. The first model is the pedestrian distribution prediction (or postdiction) model by multiple regression analysis using space syntax indices of urban fabric and people distribution data obtained from a field survey. The second model is a street choice model for visitors using multinomial logit model. We performed a questionnaire survey on the field to investigate the strolling routes of 46 visitors and obtained a total of 1211 street choices in their routes. We proposed a utility function, sum of weighted space syntax indices, and other indices, and estimated the parameters for weights on the basis of maximum likelihood. These models consider both street networks, distance from destination, direction of the street choice and other spatial compositions (numbers of pedestrians, cars, shops, and elevation). The first model explains the characteristics of the street where many people tend to walk or stay. The second model explains the mechanism underlying the street choice of visitors and clarifies the differences in the weights of street choice parameters among the various attributes, such as gender, existence of destinations, number of people, etc. For all the attributes considered, the influences of DISTANCE and DIRECTION are strong. On the other hand, the influences of Int.V, SHOPS, CARS, ELEVATION, and WIDTH are different for each attribute. People with defined destinations tend to choose streets that "have more shops, and are wider and lower". In contrast, people with undefined destinations tend to choose streets of high Int.V. The choice of males is affected by Int.V, SHOPS, WIDTH (positive) and CARS (negative). Females prefer streets that have many shops, and couples tend to choose downhill streets. The behavior of individual persons is affected by all variables. The behavior of people visiting in groups is affected by SHOP and WIDTH (positive).

  1. LEFTBUILDING 114 ELMER STREET ROPE SHOP NORTH EXTENSION (c.1925) RIGHTBUILDING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    LEFT-BUILDING 114 ELMER STREET ROPE SHOP NORTH EXTENSION (c.1925) RIGHT-BUILDING 110 CARPENTER SHOP (1908) - John A. Roebling's Sons Company & American Steel & Wire Company, South Broad, Clark, Elmer, Mott & Hudson Streets, Trenton, Mercer County, NJ

  2. 2. View looking east, showing west elevation of blacksmith shop/garage ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. View looking east, showing west elevation of blacksmith shop/garage and change in slope - Lamprey Blacksmith Shop, South side of Dover Road, 0.05 miles east of Goboro Road, Epsom, Merrimack County, NH

  3. 77 FR 71609 - Self-Help Homeownership Opportunity Program (SHOP) Grant Monitoring

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-03

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT Self-Help Homeownership Opportunity Program (SHOP) Grant Monitoring AGENCY: Office of... following information: Title of Proposed: Self-Help Homeownership Opportunity Program (SHOP)...

  4. Night ganglarge furnace 1903…Locomotive blacksmith shop. Taken from the nortwest ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Night gang--large furnace 1903…Locomotive blacksmith shop. Taken from the nortwest corner of the building, the anvil of this forge is still visible - Chicago, Burlington & Quincy Railroad, Roundhouse & Shops, Broadway & Spring Streets, Aurora, Kane County, IL

  5. Comprehensive Evaluation and Implementation of Improvement Actions in Butcher Shops

    PubMed Central

    Leotta, Gerardo A.; Brusa, Victoria; Galli, Lucía; Adriani, Cristian; Linares, Luciano; Etcheverría, Analía; Sanz, Marcelo; Sucari, Adriana; Peral García, Pilar; Signorini, Marcelo

    2016-01-01

    Foodborne pathogens can cause acute and chronic diseases and produce a wide range of symptoms. Since the consumption of ground beef is a risk factor for infections with some bacterial pathogens, we performed a comprehensive evaluation of butcher shops, implemented improvement actions for both butcher shops and consumers, and verified the impact of those actions implemented. A comprehensive evaluation was made and risk was quantified on a 1–100 scale as high-risk (1–40), moderate-risk (41–70) or low-risk (71–100). A total of 172 raw ground beef and 672 environmental samples were collected from 86 butcher shops during the evaluation (2010–2011) and verification (2013) stages of the study. Ground beef samples were analyzed for mesophilic aerobic organisms, Escherichia coli and coagulase-positive Staphylococcus aureus enumeration. Salmonella spp., E. coli O157:H7, non-O157 Shiga toxin-producing E. coli (STEC), and Listeria monocytogenes were detected and isolated from all samples. Risk quantification resulted in 43 (50.0%) high-risk, 34 (39.5%) moderate-risk, and nine (10.5%) low-risk butcher shops. Training sessions for 498 handlers and 4,506 consumers were held. Re-evaluation by risk quantification and microbiological analyses resulted in 19 (22.1%) high-risk, 42 (48.8%) moderate-risk and 25 (29.1%) low-risk butcher shops. The count of indicator microorganisms decreased with respect to the 2010–2011 period. After the implementation of improvement actions, the presence of L. monocytogenes, E. coli O157:H7 and stx genes in ground beef decreased. Salmonella spp. was isolated from 10 (11.6%) ground beef samples, without detecting statistically significant differences between both study periods (evaluation and verification). The percentage of pathogens in environmental samples was reduced in the verification period (Salmonella spp., 1.5%; L. monocytogenes, 10.7%; E. coli O157:H7, 0.6%; non-O157 STEC, 6.8%). Risk quantification was useful to identify those

  6. Comprehensive Evaluation and Implementation of Improvement Actions in Butcher Shops.

    PubMed

    Leotta, Gerardo A; Brusa, Victoria; Galli, Lucía; Adriani, Cristian; Linares, Luciano; Etcheverría, Analía; Sanz, Marcelo; Sucari, Adriana; Peral García, Pilar; Signorini, Marcelo

    2016-01-01

    Foodborne pathogens can cause acute and chronic diseases and produce a wide range of symptoms. Since the consumption of ground beef is a risk factor for infections with some bacterial pathogens, we performed a comprehensive evaluation of butcher shops, implemented improvement actions for both butcher shops and consumers, and verified the impact of those actions implemented. A comprehensive evaluation was made and risk was quantified on a 1-100 scale as high-risk (1-40), moderate-risk (41-70) or low-risk (71-100). A total of 172 raw ground beef and 672 environmental samples were collected from 86 butcher shops during the evaluation (2010-2011) and verification (2013) stages of the study. Ground beef samples were analyzed for mesophilic aerobic organisms, Escherichia coli and coagulase-positive Staphylococcus aureus enumeration. Salmonella spp., E. coli O157:H7, non-O157 Shiga toxin-producing E. coli (STEC), and Listeria monocytogenes were detected and isolated from all samples. Risk quantification resulted in 43 (50.0%) high-risk, 34 (39.5%) moderate-risk, and nine (10.5%) low-risk butcher shops. Training sessions for 498 handlers and 4,506 consumers were held. Re-evaluation by risk quantification and microbiological analyses resulted in 19 (22.1%) high-risk, 42 (48.8%) moderate-risk and 25 (29.1%) low-risk butcher shops. The count of indicator microorganisms decreased with respect to the 2010-2011 period. After the implementation of improvement actions, the presence of L. monocytogenes, E. coli O157:H7 and stx genes in ground beef decreased. Salmonella spp. was isolated from 10 (11.6%) ground beef samples, without detecting statistically significant differences between both study periods (evaluation and verification). The percentage of pathogens in environmental samples was reduced in the verification period (Salmonella spp., 1.5%; L. monocytogenes, 10.7%; E. coli O157:H7, 0.6%; non-O157 STEC, 6.8%). Risk quantification was useful to identify those relevant facts

  7. Energy efficiency in U.K. shopping centres

    NASA Astrophysics Data System (ADS)

    Mangiarotti, Michela

    Energy efficiency in shopping centres means providing comfortable internal environment and services to the occupants with minimum energy use in a cost-effective and environmentally sensitive manner. This research considers the interaction of three factors affecting the energy efficiency of shopping centres: i) performance of the building fabric and services ii) management of the building in terms of operation, control, maintenance and replacement of the building fabric and services, and company's energy policy iii) occupants' expectation for comfort and awareness of energy efficiency. The aim of the investigation is to determine the role of the above factors in the energy consumption and carbon emissions of shopping centres and the scope for reducing this energy usage by changing one or all the three factors. The study also attempts to prioritize the changes in the above factors that are more cost-effective at reducing that energy consumption and identify the benefits and main economic and legal drivers for energy efficiency in shopping centres. To achieve these targets, three case studies have been analysed. Using energy data from bills, the performance of the selected case studies has been assessed to establish trends and current energy consumption and carbon emissions of shopping centres and their related causes. A regression analysis has attempted to break down the energy consumption of the landlords' area by end-use to identify the main sources of energy usage and consequently introduce cost-effective measures for saving energy. A monitoring and occupants' survey in both landlords' and tenants' areas have been carried out at the same time to compare the objective data of the environmental conditions with the subjective impressions of shoppers and shopkeepers. In particular, the monitoring aimed at assessing the internal environment to identify possible causes of discomfort and opportunities for introducing energy saving measures. The survey looked at

  8. [Compulsive shopping--current considerations on classification and therapy].

    PubMed

    Croissant, B; Croissant, D

    2007-05-01

    Compulsive shopping is classified by ICD-10 (F63.8) as an "impulse control disorder, not otherwise classified". Several authors consider compulsive shopping rather as a variety of dependence disorder. It is characterized by the impulsive or compulsive buying of unneeded things, personal distress, impaired social and vocational functioning, and/or financial problems. In this case, we discuss a two-way therapy consisting of addiction-specific psychological education and high dose selective serotonin reuptake inhibitors (SSRIs). We further point to compliance problems caused by SSRI side effects.

  9. Waiting time and doctor shopping in a mixed medical economy.

    PubMed

    Yeung, Raymond Y T; Leung, Gabriel M; McGhee, Sarah M; Johnston, Janice M

    2004-11-01

    Waiting time generally acts as a rationing mechanism in the public health care system. In theory, patients who have a higher valuation of time are more likely to seek alternative care (i.e. doctor shopping) if there is a parallel private sector than those who have weaker time preference. However, the existing settings of many health care systems do not allow patients to reveal their preference of such. The data presented in this study suggest a positive association between patients' expressed value of time and doctor shopping behaviour in Hong Kong. Patients who were assigned longer waiting times relative to their expected horizon were more likely to seek private alternative care.

  10. School Shops. Layouts, Justifications, Equipment for Trade and Industrial Education Programs.

    ERIC Educational Resources Information Center

    Mississippi State Dept. of Education, Jackson.

    Suggestions for school shops are presented in three general areas--(1) planning, (2) layouts, and (3) tools and equipment. Within the planning area, two types of shop programs are discussed--(1) industrial arts education, and (2) trade and industrial education. Layouts and floor plans are provided for the following shops: auto mechanics, building…

  11. 14 CFR 147.19 - Materials, special tools, and shop equipment requirements.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Materials, special tools, and shop... TECHNICIAN SCHOOLS Certification Requirements § 147.19 Materials, special tools, and shop equipment... additional rating, must have an adequate supply of material, special tools, and such of the shop equipment...

  12. 14 CFR 147.19 - Materials, special tools, and shop equipment requirements.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 3 2011-01-01 2011-01-01 false Materials, special tools, and shop... TECHNICIAN SCHOOLS Certification Requirements § 147.19 Materials, special tools, and shop equipment... additional rating, must have an adequate supply of material, special tools, and such of the shop equipment...

  13. Facility 3A, interior of battery shop addition on north side ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Facility 3A, interior of battery shop addition on north side of building showing overhead bridge crane, wall ladder to crane/platform. View facing west-northwest - U.S. Naval Base, Pearl Harbor, Instrument Shop & Electrical Shop Lean-to, Avenue E, between Sixth & Seventh Streets, Pearl City, Honolulu County, HI

  14. Secrets of Taming the Wild Food Bill. A Guide to Supermarket Super Shopping.

    ERIC Educational Resources Information Center

    Urshan, J.

    This guide to supermarket shopping begins with a study of the American food shopper. The major types of shoppers and their needs are identified. Chapter 2 discusses planning at home. Topics include preparation of a comprehensive list, using coupons, impulse buying, and comparison shopping. Chapter 3 focuses on the actual shopping experience. Unit…

  15. ENVIRONMENTAL ASSESSMENT OF SHOP TOWEL USAGE IN THE AUTOMOTIVE AND PRINTING INDUSTRIES

    EPA Science Inventory

    This assessment identifies the environmental impacts and usage trends of shop towels in the printing and automotive repair industries. The shop towels are used to clean equipment and to wipe up contaminants for a variety of operations. Four types of shop towels were evaluated; wo...

  16. The Impact of Verbal Prompts on Child Safety-Belt Use in Shopping Carts

    ERIC Educational Resources Information Center

    Barker, Mae R.; Bailey, Jon S.; Lee, Natalie

    2004-01-01

    Each year thousands of children are injured by falling from shopping carts. Buckling children into the seats of shopping carts could prevent many of these injuries. A combined reversal and multiple baseline across settings design was used to evaluate the impact of verbal prompts on shopping cart safety-belt use in two stores. Safety-belt use…

  17. Envisioning Competence: Learning, Problem Solving, and Children at Work in the Exploratory Bicycle Shop

    ERIC Educational Resources Information Center

    Hammond, Charles Florian

    2010-01-01

    This study examines the conceptual learning and cognitive development processes of schoolchildren engaged in problem solving activities in a non-school, workplace setting known as the exploratory bicycle shop. The exploratory bike shop is a commercial bicycle shop: a) that has been adapted for combined retail and educational purposes and b) where…

  18. 48 CFR 536.570-9 - Shop drawings, coordination drawings, and schedules.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 48 Federal Acquisition Regulations System 4 2010-10-01 2010-10-01 false Shop drawings... CONTRACTS Contract Clauses 536.570-9 Shop drawings, coordination drawings, and schedules. Insert the clause at 552.236-78, Shop Drawings, Coordination Drawings, and Schedules, in solicitations and contracts...

  19. 5 CFR 532.265 - Special wage schedules for apprentices and shop trainees.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... and shop trainees. 532.265 Section 532.265 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT... schedules for apprentices and shop trainees. (a) Agencies may establish special wage schedules for apprentices and shop trainees who are included in: (1) Formal apprenticeship programs involving training...

  20. 41 CFR 109-27.5005 - Shop, bench, cupboard or site stock.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false Shop, bench, cupboard or site stock. 109-27.5005 Section 109-27.5005 Public Contracts and Property Management Federal Property....5005 Shop, bench, cupboard or site stock. Shop, bench, cupboard or site stocks are an accumulation...