WorldWideScience

Sample records for two-sided matching agents

  1. A Two-Sided Matching Decision Model Based on Uncertain Preference Sequences

    Directory of Open Access Journals (Sweden)

    Xiao Liu

    2015-01-01

    Full Text Available Two-sided matching is a hot issue in the field of operation research and decision analysis. This paper reviews the typical two-sided matching models and their limitations in some specific contexts, and then puts forward a new decision model based on uncertain preference sequences. In this model, we first design a data processing method to get preference ordinal value in uncertain preference sequence, then compute the preference distance of each matching pair based on these certain preference ordinal values, set the optimal objectives as maximizing matching number and minimizing total sum of preference distances of all the matching pairs under the lowest threshold constraint of matching effect, and then solve it with branch-and-bound algorithm. Meanwhile, we take two numeral cases as examples and analyze the different matching solutions with one-norm distance, two-norm distance, and positive-infinity-norm distance, respectively. We also compare our decision model with two other approaches, and summarize their characteristics on two-sided matching.

  2. Transfers and Exchange-Stability in Two-Sided Matching Problems

    NARCIS (Netherlands)

    Lazarova, E.A.; Borm, P.E.M.; Estevez, A.

    2014-01-01

    In this paper we consider one-to-many matching problems where the preferences of the agents involved are represented by monetary reward functions. We characterize Pareto optimal matchings by means of contractually exchange stability and matchings of maximum total reward by means of compensation exch

  3. Self-tuning wireless power transmission scheme based on on-line scattering parameters measurement and two-side power matching.

    Science.gov (United States)

    Luo, Yanting; Yang, Yongmin; Chen, Zhongsheng

    2014-04-10

    Sub-resonances often happen in wireless power transmission (WPT) systems using coupled magnetic resonances (CMR) due to environmental changes, coil movements or component degradations, which is a serious challenge for high efficiency power transmission. Thus self-tuning is very significant to keep WPT systems following strongly magnetic resonant conditions in practice. Traditional coupled-mode ways is difficult to solve this problem. In this paper a two-port power wave model is presented, where power matching and the overall systemic power transmission efficiency are firstly defined by scattering (S) parameters. Then we propose a novel self-tuning scheme based on on-line S parameters measurements and two-side power matching. Experimental results testify the feasibility of the proposed method. These findings suggest that the proposed method is much potential to develop strongly self-adaptive WPT systems with CMR.

  4. 基于置信规则库推理的多属性双边匹配决策方法%Belief rule base inference methodology for two-sided matching decision with multi-attribute

    Institute of Scientific and Technical Information of China (English)

    方志坚; 杨隆浩; 傅仰耿; 陈建华

    2016-01-01

    This thesis presents a tentative study on a new two-sided matching approach,which is proposed to solve the two-sided matching problem with uncertain information and multiple attributes.The multi-attributes matching decision making(MAMDM)problem is one of the most important key points in the two-sided matching study,which has evoked great attention for the scholars in recent years.A belief rule-base inference methodology using the evidence reasoning approach(RIMER)has been introduced in this thesis to solve the problem of MAMDM.At the beginning of this thesis,the authors explain the reason why they choose to use belief degree.The current research on the problem of MAMDM is mainly restricted to the study of a kind of two-sided matching,whose evaluation information is linguistic values or interval values.But there exists a lack of study in belief degree as evaluation value. As belief degree can be used to deal with different kinds of uncertain and incomplete information,using it as evaluation value may trigger a new breakthrough in the study of MAMDM.Through the analysis of simulation ex-periments datas and the application of RIMER,belief degrees evaluation information is converted into different levels of confidence information.Then a 0-1 programming model is built by making use of different levels of confidence information to obtain a final matching scheme.It is also pointed out in the thesis that an output error may be caused when BRB(belief rule-base)input is higher than threshold value.To solve this problem,the authors propose that the input value can be incorporated into the uncertainty by the adoption of cutting method.If cutting method is not suitable,linear mapping method can be applied to reduce the influence of the results.The case study analysis shows that it is feasible and effective to adopt the new proposed approach to solve the problem of multi-attributes matching decision making.%针对具有不确定信息的多属性双边匹配决策问题,引

  5. Matching Through Position Auctions

    OpenAIRE

    Terence Johnson

    2009-01-01

    This paper studies how an intermediary should design two-sided matching markets when agents are privately informed about their quality as a partner and can make payments to the intermediary. Using a mechanism design approach, I derive sufficient conditions for assortative matching to be profit- or welfare-maximizing, and then show how to implement the optimal match and payments through two-sided position auctions. This sharpens our understanding of intermediated matching markets by clarifying...

  6. Matchings with Externalities and Attitudes

    DEFF Research Database (Denmark)

    Branzei, Simina; Michalak, Tomasz; Rahwan, Talal;

    2013-01-01

    Two-sided matchings are an important theoretical tool used to model markets and social interactions. In many real-life problems the utility of an agent is influenced not only by their own choices, but also by the choices that other agents make. Such an influence is called an externality. Whereas ...

  7. Grammars with two-sided contexts

    Directory of Open Access Journals (Sweden)

    Mikhail Barash

    2014-05-01

    Full Text Available In a recent paper (M. Barash, A. Okhotin, "Defining contexts in context-free grammars", LATA 2012, the authors introduced an extension of the context-free grammars equipped with an operator for referring to the left context of the substring being defined. This paper proposes a more general model, in which context specifications may be two-sided, that is, both the left and the right contexts can be specified by the corresponding operators. The paper gives the definitions and establishes the basic theory of such grammars, leading to a normal form and a parsing algorithm working in time O(n^4, where n is the length of the input string.

  8. The Three-region Method of Color Matching in the Presence of Fluorescent Whitening Agents

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    An expression of reflectance of fluorescent dyes in emissionregion was used in this article. Through the analysis of thesppectral radiance factor of fluorescent whitening agents (FWA), the color matching of FWA was studied and the three-region method of color matching method was put forward. The method was proved to be reliable for the dyes used and was easy to apply for the color matching of FWAs.

  9. Areeda-turner in two-sided markets

    NARCIS (Netherlands)

    Behringer, S.; Filistrucchi, L.

    2015-01-01

    We extend the Areeda–Turner rule to two-sided markets. We show that a two-sided monopolist may find it short-run profit-maximizing to charge a price below marginal cost on one side of the market. Hence showing that the price is below marginal cost on one side of a two-sided market cannot be consider

  10. Areeda-turner in two-sided markets

    NARCIS (Netherlands)

    Behringer, S.; Filistrucchi, L.

    2015-01-01

    We extend the Areeda–Turner rule to two-sided markets. We show that a two-sided monopolist may find it short-run profit-maximizing to charge a price below marginal cost on one side of the market. Hence showing that the price is below marginal cost on one side of a two-sided market cannot be

  11. Areeda-turner in two-sided markets

    NARCIS (Netherlands)

    Behringer, S.; Filistrucchi, L.

    2015-01-01

    We extend the Areeda–Turner rule to two-sided markets. We show that a two-sided monopolist may find it short-run profit-maximizing to charge a price below marginal cost on one side of the market. Hence showing that the price is below marginal cost on one side of a two-sided market cannot be consider

  12. Matching Games with Additive Externalities

    DEFF Research Database (Denmark)

    Branzei, Simina; Michalak, Tomasz; Rahwan, Talal

    2012-01-01

    Two-sided matchings are an important theoretical tool used to model markets and social interactions. In many real life problems the utility of an agent is influenced not only by their own choices, but also by the choices that other agents make. Such an influence is called an externality. Whereas......, optimistic, and pessimistic behaviour, and provide both computational hardness results and polynomial-time algorithms for computing stable outcomes....

  13. Two-sided and alternating Jacobi-Davidson

    OpenAIRE

    Hochstenbach, Michiel Erik; Sleijpen, G.L.G.

    2001-01-01

    We discuss two variants of a two-sided Jacobi-Davidson method, which have asymptotically cubic convergence for nonnormal matrices and aim to find both right and left eigenvectors. These methods can be seen as Jacobi-Davidson analogs of Ostrowski’s two-sided Rayleigh Quotient Iteration. Some relations between (exact and inexact) two-sided Jacobi-Davidson and (exact and inexact) two-sided Rayleigh Quotient Iteration are given, together with convergence rates. Furthermore, we introduce an altern...

  14. Two-sided and alternating Jacobi-Davidson

    NARCIS (Netherlands)

    Hochstenbach, Michiel Erik; Sleijpen, G.L.G.

    2001-01-01

    We discuss two variants of a two-sided Jacobi-Davidson method, which have asymptotically cubic convergence for nonnormal matrices and aim to find both right and left eigenvectors. These methods can be seen as Jacobi-Davidson analogs of Ostrowski’s two-sided Rayleigh Quotient Iteration. Some

  15. Market definition in two-sided markets : Theory and practice

    NARCIS (Netherlands)

    Filistrucchi, L.; Geradin, D.A.A.G.; van Damme, E.E.C.; Affeldt, P.

    2014-01-01

    Drawing from the economics of two-sided markets, we provide suggestions for the definition of the relevant market in cases involving two-sided platforms, such as media outlets, online intermediaries, payment cards companies, and auction houses. We also discuss when a one-sided approach may be harmle

  16. Market definition in two-sided markets : Theory and practice

    NARCIS (Netherlands)

    Filistrucchi, L.; Geradin, D.A.A.G.; van Damme, E.E.C.; Affeldt, P.

    2014-01-01

    Drawing from the economics of two-sided markets, we provide suggestions for the definition of the relevant market in cases involving two-sided platforms, such as media outlets, online intermediaries, payment cards companies, and auction houses. We also discuss when a one-sided approach may be

  17. Impurity Profiling to Match a Nerve Agent to Its Precursor Source for Chemical Forensics Applications

    Energy Technology Data Exchange (ETDEWEB)

    Fraga, Carlos G.; Perez Acosta, Gabriel A.; Crenshaw, Michael D.; Wallace, Krys; Mong, Gary M.; Colburn, Heather A.

    2011-10-31

    Chemical forensics is an emerging field in homeland security that aims to attribute a weaponized toxic chemical or related material to its source. Herein, for the first time, trace impurities originating from a chemical precursor were used to match a synthesized nerve agent to its precursor source. Specifically, multiple batches of sarin and its intermediate were synthesized from two commercial stocks of methylphosphonic dichloride (DC) and were then matched by impurity profiling to their DC stocks from out of five possible stocks. This was possible because each DC stock had a unique impurity profile that, for the tested stocks, persisted through synthesis, decontamination, and sample preparation. This work may form a basis for using impurity profiling to help find and prosecute perpetrators of chemical attacks.

  18. Market segmentation in two-sided markets : tv rights for premier league

    OpenAIRE

    Kind, Hans Jarle; Sørgard, Lars

    2012-01-01

    This paper analyzes market segmentation in a two-sided market that consists of media consumers and advertisers. The analysis is motivated by a European Court of Justice Decision in October 2011, which allowed viewers to take advantage of international price differences and buy access to Premier League TV matches from whichever country they like. We compare complete market segmentation with the new situation where consumers can purchase from abroad (allowing for passive sales). Clearly, such a...

  19. Harmony Search for Balancing Two-sided Assembly Lines

    Directory of Open Access Journals (Sweden)

    Hindriyanto Dwi Purnomo

    2012-01-01

    Full Text Available Two-sided assembly lines balancing problems are important problem for large-sized products such as cars and buses, in which, tasks operations can be performed in the two sides of the line. In this paper, Harmony Search algorithm is proposed to solve two-sided assembly lines balancing problems type-I (TALBP-I. The proposed method adopts the COMSOAL heuristic and specific features of TALBP in the Harmony operators – the harmony memory consideration, random selection and pitch adjustment – in order to maintain the local and global search. The proposed method is evaluated based on 6 benchmark problems that are commonly used in TALBP. The experiment results show that the proposed method work well and produces better solution than the heuristic method and genetic algorithm.

  20. Two-Sided Gravitational Mirror: Sealing off Curvature Singularities

    CERN Document Server

    Davidson, Aharon

    2012-01-01

    A gravitational mirror is a non-singular finite redshift surface which bounces all incident null geodesics. While a white mirror (outward bouncing) resembles 't Hooft's brick wall, a black mirror (inward bouncing) offers a novel mechanism for sealing off curvature singularities. The geometry underlying a two-sided mirror is characterized by a single signature change, to be contrasted with the signature flip which governs the black hole geometry. To demonstrate the phenomenon analytically, we derive an exact, static, radially symmetric, two-sided mirror solution, which asymptotes the massless BTZ black hole background, and then probe the local structure of a massive mirror.

  1. The Two-Sided Mind: Teaching and Suggestopedia.

    Science.gov (United States)

    Bancroft, W. Jane

    This paper explores how Georgi Lozanov's Suggestopedia incorporates elements of modern right-brain research. For example, issues in Linda VerLee Williams's "Teaching for the Two-Sided Mind" that are applicable to Suggestopedia include visual thinking, fantasy, multisensory learning, music, and direct experience. In Robert Ornstein's "The…

  2. Two-sided reflection of Markov-modulated Brownian motion

    NARCIS (Netherlands)

    D'Auria, B.; Ivanovs, J.; Kella, O.; Mandjes, M.

    2012-01-01

    This article considers a Markov-modulated Brownian motion with a two-sided reflection. For this doubly-reflected process we compute the Laplace transform of the stationary distribution, as well as the average loss rates at both barriers. Our approach relies on spectral properties of the matrix polyn

  3. Novel high torque bearingless two-sided rotary ultrasonic motor

    Institute of Scientific and Technical Information of China (English)

    LI Xia; CHEN Wei-shan; XIE Tao; LIU Jun-kao

    2007-01-01

    Applications are limited at present because the currently available ultrasonic motors (USMs) do not provide sufficiently high torque and power. The conventional travelling-wave USM needs the bearing to support, which required lubricant. To solve the above problem, a bearingless travelling-wave USM is designed. First, a novel structure of the two-sided USM consisting ora two-sided teeth stator and two disk-type rotors is designed. And the excitation principle of the two-sided travelling-wave USM is analyzed. Then, using ANSYS software, we set up the model of the stator to predict the excitation frequency and modal response of the stator. The shape of the vibration mode was obtained. Last, the load characteristics of the USM are measured using experimental method. The maximum stall torque and the no-load speed were obtained. The results showed that the characteristics of the two-sided USM are better than those of the conventional one-sided USM.

  4. Upward Pricing Pressure in Two-Sided Markets

    NARCIS (Netherlands)

    Affeldt, P.; Filistrucchi, L.; Klein, T.J.

    2012-01-01

    Abstract: Pricing pressure indices have recently been proposed as alternative screening devices for horizontal mergers involving differentiated products. We extend the concept of Upward Pricing Pressure (UPP) proposed by Farrell and Shapiro (2010) to two-sided markets. Examples of such markets are t

  5. Eubiosis and dysbiosis: the two sides of the microbiota.

    Science.gov (United States)

    Iebba, Valerio; Totino, Valentina; Gagliardi, Antonella; Santangelo, Floriana; Cacciotti, Fatima; Trancassini, Maria; Mancini, Carlo; Cicerone, Clelia; Corazziari, Enrico; Pantanella, Fabrizio; Schippa, Serena

    2016-01-01

    The microbial ecosystem of the gastrointestinal tract is characterized by a great number of microbial species living in balance by adopting mutualistic strategies. The eubiosis/dysbiosis condition of the gut microbiota strongly influences our healthy and disease status. This review briefly describes microbiota composition and functions, to then focus on eubiosis and dysbiosis status: the two sides of the microbiota.

  6. A Frame Nucleus on a Two-side Prequantale

    Institute of Scientific and Technical Information of China (English)

    XUShao-xian; WANGShun-qin; MAFei-fei

    2004-01-01

    In this paper, a Frame nucleus and prime elements in a Prequantale are defined. The concrete structure of a Frame prequantic quotient is considered, and the relation between the half-prime element and the Frame nucleus in a two-side Prequantale are obtained.

  7. Two-Sided Tests and One-Sided Confidence Bounds

    OpenAIRE

    1994-01-01

    Based on the duality between tests and confidence sets we introduce a new method to derive one-sided confidence bounds following the rejection of a null hypothesis with two-sided alternatives. This method imputes that the experimenter is only interested in confidence bounds if the null hypothesis is rejected. Furthermore, we suppose that he is only interested in the direction and a lower confidence bound concerning the distance of the true parameter value to the parameter values in the null h...

  8. Two-Sided Gravitational Mirror: Sealing off Curvature Singularities

    OpenAIRE

    Davidson, Aharon; Yellin, Ben

    2011-01-01

    A gravitational mirror is a non-singular finite redshift surface which bounces all incident null geodesics. While a white mirror (outward bouncing) resembles 't Hooft's brick wall, a black mirror (inward bouncing) offers a novel mechanism for sealing off curvature singularities. The geometry underlying a two-sided mirror is characterized by a single signature change, to be contrasted with the signature flip which governs the black hole geometry. To demonstrate the phenomenon analytically, we ...

  9. Strategic Trading in a Two-Sided Foreign Exchange Auction

    OpenAIRE

    Linda Goldberg; Rafael Tenorio

    1995-01-01

    The market microstructure chosen for foreign exchange markets can influence trading volumes and equilibrium exchange rates. With emerging markets and developing countries increasingly utilizing two- sided auctions, we show that the choice of the discrete 'tƒtonnement' auction creates incentives for strategic behavior among market participants. We provide theoretical predictions on strategic under- revelation of demand or supply positions that are supported empirically using detailed data from...

  10. Wake flow behind two side-by-side square cylinders

    Energy Technology Data Exchange (ETDEWEB)

    Yen, Shun C., E-mail: scyen@mail.ntou.edu.t [Department of Mechanical and Mechatronic Engineering, National Taiwan Ocean University, Keelung 202, Taiwan (China); Liu, Jung H. [Department of Mechanical and Mechatronic Engineering, National Taiwan Ocean University, Keelung 202, Taiwan (China)

    2011-02-15

    This study investigates the flow structures, form drag coefficients and vortex-shedding characteristics behind a single-square cylinder and two side-by-side cylinders in an open-loop wind tunnel. The Reynolds number (Re) and gap ratio (g*) are 2262 < Re < 28,000 and 0 {<=} g* {<=} 12, respectively. The flow patterns around the square cylinders are determined using the smoke-wire scheme. Experimental results indicate that the flow structures behind two side-by-side square cylinders are classified into three modes -single mode, gap-flow mode and couple vortex-shedding. The gap-flow mode displays anti-phase vortex shedding induced from the interference between the two square cylinders. However, the couple vortex-shedding mode exhibits in-phase vortex shedding that is caused by the independent flow behavior behind each square cylinder. The surface-pressure profile, form drag coefficient for each square cylinder (C{sub D}-bar) and vortex-shedding frequency were measured and calculated using a pressure transducer and a hot-wire anemometer. For two side-by-side cylinder configurations, the maximum C{sub D}-bar of 2.24 occurs in the single mode, while the minimum C{sub D}-bar of 1.68 occurs in the gap-flow mode. Additionally, the C{sub D}-bar in the coupled vortex-shedding mode is intermediate and approximately equal to that of a single (isolated) square cylinder. Moreover, the single mode has the highest Strouhal number (St) and the gap-flow mode has the lowest St.

  11. Peace and development: two sides of the same coin?

    Directory of Open Access Journals (Sweden)

    Viveros Tafur, Memphis Ronald

    2015-07-01

    Full Text Available There is the notion that peace and development are positively correlated, that peace drives development and that development drives peace, for Galtung (1985: 147 Peace and Development should be regarded as two sides of the same coin and considers development in relation to peace. This paper shows that peace and development are uncorrelated in several countries where there is peace without development or development without peace. The use of quantitative models as a tool for the analysis is a plus for the findings because most of the related theories are qualitative.

  12. Imageology and clinical examination: Two sides of the same coin

    Directory of Open Access Journals (Sweden)

    Deepa Das

    2011-01-01

    Full Text Available The continuous and rapid transition of techniques from research lab into clinical practice has been the pattern of development in radiology and imaging, and this has put the concept of clinical imaging into a different perspective. From a passive role of pattern recognition, distinguishing a radiograph from normal to abnormal, the task of a radiologist today has been elevated to reporting a comprehensive clinical imaging assay, giving information at a level profound enough to be useful for scientists working in allied fields. A peep into the literature shows how radiological and clinical examination can be two sides of the same coin.

  13. Fractionation of proteins with two-sided electro-ultrafiltration.

    Science.gov (United States)

    Käppler, Tobias; Posten, Clemens

    2007-03-10

    Downstream processing is a major challenge in bioprocess industry due to the high complexity of bio-suspensions itself, the low concentration of the product and the stress sensitivity of the valuable target molecules. A multitude of unit operations have to be joined together to achieve an acceptable purity and concentration of the product. Since each of the unit operations leads to a certain product loss, one important aim in downstream-research is the combination of different separation principles into one unit operation. In the current work a dead-end membrane process is combined with an electrophoresis operation. In the past this concept has proven successfully for the concentration of biopolymers. The present work shows that using different ultrafiltration membranes in a two-sided electro-filter apparatus with flushed electrodes brought significant enhancement of the protein fractionation process. Due to electrophoretic effects, the filtration velocity could be kept on a very high level for a long time, furthermore, the selectivity of a binary separation process carried out exemplarily for bovine serum albumin (BSA) and lysozyme (LZ) could be greatly increased; in the current case up to a value of more than 800. Thus the new two-sided electro-ultrafiltration technique achieves both high product purity and short separation times.

  14. Neutrophils in Cancer: Two Sides of the Same Coin

    Directory of Open Access Journals (Sweden)

    Eileen Uribe-Querol

    2015-01-01

    Full Text Available Neutrophils are the most abundant leukocytes in blood and are considered to be the first line of defense during inflammation and infections. In addition, neutrophils are also found infiltrating many types of tumors. Tumor-associated neutrophils (TANs have relevant roles in malignant disease. Indeed neutrophils may be potent antitumor effector cells. However, increasing clinical evidence shows TANs correlate with poor prognosis. The tumor microenvironment controls neutrophil recruitment and in turn TANs help tumor progression. Hence, TANs can be beneficial or detrimental to the host. It is the purpose of this review to highlight these two sides of the neutrophil coin in cancer and to describe recent studies that provide some light on the mechanisms for neutrophil recruitment to the tumor, for neutrophils supporting tumor progression, and for neutrophil activation to enhance their antitumor functions.

  15. Application of Two-Sided Matching to Internal Labor of the Hellenic Navy

    Science.gov (United States)

    2012-03-01

    Benjamin Roberts Second Reader William R. Gates Dean, Graduate School of Business and Public Policy iv THIS PAGE INTENTIONALLY LEFT BLANK...mental, psychic, administrative, professional, special and ethical skills are the general fields on the form, while each of them is divided into...be utilitarian and provide many useful conclusions. 92 THIS PAGE INTENTIONALLY LEFT BLANK 93 ENDNOTES 1. Robert L. Mathis and John H

  16. Two-Sided Matching in Hierarchical Organizations-An Application for the Assignment of Military Personnel

    Science.gov (United States)

    2011-06-01

    36(1), 19–30. Barron, F. H. (1992). Selecting a best multiattribute alternative with partial information about attribute weights. Acta Psychologica ...1988). Systematic research into human behavior in multi-attribute object classification problems. Acta Psychologica , 68, 171–182. León, O. G

  17. NEW DYNAMICS OF THE CONFLICT BETWEEN TWO SIDES IN SCHOOLS

    Directory of Open Access Journals (Sweden)

    Pablo Ortega Gil

    2016-12-01

    Full Text Available This paper contains my own thoughts concerning what I have called new dynamics of the conflict between two sides in Schools. It begins by presenting the contrast between traditional conflicts, where both sides believed their argument was a private affair, and these new dynamics where one or both sides of the conflict tend to make it public and work to win support for their cause. The furious confrontation some people seek and the waves of indignation they set off bring to mind the frequent social media shitstorms we hear about. As a consequence, as the conflict festers, the inspector of education receives countless visits, phone calls and protest letters, an uproar designed to influence her decision. Next, some real cases are discussed, although no information is given of the people taking parts in the events to safeguard identities. Finally, I propose a checklist that involves a sequence of steps designed to protect the inspector from pressure and help her deal more efficiently with problems of this nature.

  18. Compact, Two-Sided Structural Cold Plate Configuration

    Science.gov (United States)

    Zaffetti, Mark

    2011-01-01

    In two-sided structural cold plates, typically there is a structural member, such as a honeycomb panel, that provides the structural strength for the cold plates that cool equipment. The cold plates are located on either side of the structural member and thus need to have the cooling fluid supplied to them. One method of accomplishing this is to route the inlet and outlet tubing to both sides of the structural member. Another method might be to supply the inlet to one side and the outlet to the other. With the latter method, an external feature such as a hose, tube, or manifold must be incorporated to pass the fluid from one side of the structural member to the other. Although this is a more compact design than the first option, since it eliminates the need for a dedicated supply and return line to each side of the structural member, it still poses problems, as these external features can be easily damaged and are now new areas for potential fluid leakage. This invention eliminates the need for an external feature and instead incorporates the feature internally to the structural member. This is accomplished by utilizing a threaded insert that not only connects the cold plate to the structural member, but also allows the cooling fluid to flow through it into the structural member, and then to the cold plate on the opposite side. The insert also employs a cap that acts as a cover to seal the open area needed to install the insert. There are multiple options for location of o-ring style seals, as well as the option to use adhesive for redundant sealing. Another option is to weld the cap to the cold plate after its installation, thus making it an integral part of the structural member. This new configuration allows the fluid to pass from one cold plate to the other without any exposed external features.

  19. Human-agent service matching using natural language queries: system test and training

    NARCIS (Netherlands)

    Pasman, W.; Lindenberg, J.

    2006-01-01

    Smart environments, ambient intelligence and intelligent agents leave the user lost between large amounts of services. Ad-hoc networks, mobile agents and mobile devices make the set of available services dynamic over time and space, increasing the user’s problems to find the service he needs. Earlie

  20. DMPD: Targeting bacterial endotoxin: two sides of a coin. [Dynamic Macrophage Pathway CSML Database

    Lifescience Database Archive (English)

    Full Text Available 17405910 Targeting bacterial endotoxin: two sides of a coin. Bosshart H, Heinzelman...n M. Ann N Y Acad Sci. 2007 Jan;1096:1-17. (.png) (.svg) (.html) (.csml) Show Targeting bacterial endotoxin:... two sides of a coin. PubmedID 17405910 Title Targeting bacterial endotoxin: two sides of a coin. Authors Bo

  1. Two sides of the same coin: stem cells in cancer and regenerative medicine.

    Science.gov (United States)

    Ilmer, Matthias; Vykoukal, Jody; Recio Boiles, Alejandro; Coleman, Michael; Alt, Eckhard

    2014-07-01

    Multipotent stromal cells (MSCs) derived from bone marrow, adipose tissue, cord blood, and other origins have recently received much attention as potential therapeutic agents with beneficial immunomodulatory and regenerative properties. In their native tissue environment, however, such cells also appear to have essential functions in building and supporting tumor microenvironments, providing metastatic niches, and maintaining cancer hallmarks. Here, we consider the varied roles of these tissue-resident stroma-associated cells, synthesize recent and emerging discoveries, and discuss the role, potential, and clinical applications of MSCs in cancer and regenerative medicine.-Ilmer, M., Vykoukal, J., Recio Boiles, A., Coleman, M., Alt, E. Two sides of the same coin: stem cells in cancer and regenerative medicine.

  2. Intermediate acting non-depolarizing neuromuscular blocking agents and risk of postoperative respiratory complications: prospective propensity score matched cohort study

    Science.gov (United States)

    Grosse-Sundrup, Martina; Henneman, Justin P; Sandberg, Warren S; Bateman, Brian T; Uribe, Jose Villa; Nguyen, Nicole Thuy; Ehrenfeld, Jesse M; Martinez, Elizabeth A; Kurth, Tobias

    2012-01-01

    Objective To determine whether use of intermediate acting neuromuscular blocking agents during general anesthesia increases the incidence of postoperative respiratory complications. Design Prospective, propensity score matched cohort study. Setting General teaching hospital in Boston, Massachusetts, United States, 2006-10. Participants 18 579 surgical patients who received intermediate acting neuromuscular blocking agents during surgery were matched by propensity score to 18 579 reference patients who did not receive such agents. Main outcome measures The main outcome measures were oxygen desaturation after extubation (hemoglobin oxygen saturation 3%) and reintubations requiring unplanned admission to an intensive care unit within seven days of surgery. We also evaluated effects on these outcome variables of qualitative monitoring of neuromuscular transmission (train-of-four ratio) and reversal of neuromuscular blockade with neostigmine to prevent residual postoperative neuromuscular blockade. Results The use of intermediate acting neuromuscular blocking agents was associated with an increased risk of postoperative desaturation less than 90% after extubation (odds ratio 1.36, 95% confidence interval 1.23 to 1.51) and reintubation requiring unplanned admission to an intensive care unit (1.40, 1.09 to 1.80). Qualitative monitoring of neuromuscular transmission did not decrease this risk and neostigmine reversal increased the risk of postoperative desaturation to values less than 90% (1.32, 1.20 to 1.46) and reintubation (1.76, 1.38 to 2.26). Conclusion The use of intermediate acting neuromuscular blocking agents during anesthesia was associated with an increased risk of clinically meaningful respiratory complications. Our data suggest that the strategies used in our trial to prevent residual postoperative neuromuscular blockade should be revisited. PMID:23077290

  3. Propofol and arrhythmias: two sides of the coin

    Science.gov (United States)

    Liu, Qiang; Kong, Ai-ling; Chen, Rong; Qian, Cheng; Liu, Shao-wen; Sun, Bao-gui; Wang, Le-xin; Song, Long-sheng; Hong, Jiang

    2011-01-01

    The hypnotic agent propofol is effective for the induction and maintenance of anesthesia. However, recent studies have shown that propofol administration is related to arrhythmias. Propofol displays both pro- and anti-arrhythmic effects in a concentration-dependent manner. Data indicate that propofol can convert supraventricular tachycardia and ventricular tachycardia and may inhibit the conduction system of the heart. The mechanism of the cardiac effects remains poorly defined and may involve ion channels, the autonomic nervous system and cardiac gap junctions. Specifically, sodium, calcium and potassium currents in cardiac cells are suppressed by clinically relevant concentrations of propofol. Propofol shortens the action potential duration (APD) but lessens the ischemia-induced decrease in the APD. Furthermore, propofol suppresses both sympathetic and parasympathetic tone and preserves gap junctions during ischemia. All of these effects cumulatively contribute to the antiarrhythmic and proarrhythmic properties of propofol. PMID:21642950

  4. Propofol and arrhythmias: two sides of the coin

    Institute of Scientific and Technical Information of China (English)

    Qiang LIU; Ai-ling KONG; Rong CHEN; Cheng QIAN; Shao-wen LIU; Bao-gui SUN; Le-xin WANG; Long-sheng SONG; Jiang HONG

    2011-01-01

    The hypnotic agent propofol is effective for the induction and maintenance of anesthesia. However, recent studies have shown that propofol administration is related to arrhythmias. Propofol displays both pro- and anti-arrhythmic effects in a concentration-dependent manner. Data indicate that propofol can convert supraventricular tachycardia and ventricular tachycardia and may inhibit the conduction system of the heart. The mechanism of the cardiac effects remains poorly defined and may involve ion channels, the autonomic nervous system and cardiac gap junctions. Specifically, sodium, calcium and potassium currents in cardiac cells are suppressed by clinically relevant concentrations of propofol. Propofol shortens the action potential duration (APD) but lessens the ischemia-induced decrease in the APD. Furthermore, propofol suppresses both sympathetic and parasympathetic tone and preserves gap junctions during ischemia. All of these effects cumulatively contribute to the antiarrhythmic and proarrhythmic properties of propofol.

  5. BLMA: A Blind Matching Algorithm with Application to Cognitive Radio Networks

    KAUST Repository

    Hamza, Doha R.

    2017-01-26

    We consider a two-sided one-to-one abstract matching problem with a defined notion of pairwise stability. The formulated problem is shown to encompass the ordinal and cardinal utility markets. We propose a distributed blind matching algorithm (BLMA) to solve the problem. BLMA is characterized by random activations of agents, and by generic negotiation and aspiration (utility) update processes. We prove the solution produced by BLMA will converge to an

  6. Chaotic-periodic transition in a two-sided minority game

    Science.gov (United States)

    Li, Xiao-Hui; Yang, Guang; Huang, Ji-Ping

    2016-08-01

    Phase transitions are being used increasingly to probe the collective behaviors of social human systems. In this study, we propose a different way of investigating such transitions in a human system by establishing a two-sided minority game model. A new type of agents who can actively transfer resources are added to our artificial bipartite resource-allocation market. The degree of deviation from equilibria is characterized by the entropy-like quantity of market complexity. Under different threshold values, Q th , two phases are found by calculating the exponents of the associated power spectra. For large values of Q th , the general motion of strategies for the agents is relatively periodic whereas for low values of Q th , the motion becomes chaotic. The transition occurs abruptly at a critical value of Q th . Our simulation results were also tested based on human experiments. The results of this study suggest that a chaotic-periodic transition related to the quantity of market information should exist in most bipartite markets, thereby allowing better control of such a transition and providing a better understanding of the endogenous emergence of business cycles from the perspective of quantum mechanics.

  7. Price Competition in Two-Sided Markets with Heterogeneous Consumers and Network Effects

    NARCIS (Netherlands)

    Filistrucchi, L.; Klein, T.J.

    2013-01-01

    We model a two-sided market with heterogeneous customers and two heterogeneous network effects. In our model, customers on each market side care differently about both the number and the type of customers on the other side. Examples of two-sided markets are online platforms or daily newspapers. In t

  8. Two-Sided Pyramid Wavefront Sensor in the Direct Phase Mode

    Energy Technology Data Exchange (ETDEWEB)

    Phillion, D; Baker, K

    2006-04-12

    The two-sided pyramid wavefront sensor has been extensively simulated in the direct phase mode using a wave optics code. The two-sided pyramid divides the focal plane so that each half of the core only interferes with the speckles in its half of the focal plane. A relayed image of the pupil plane is formed at the CCD camera for each half. Antipodal speckle pairs are separated so that a pure phase variation causes amplitude variations in the two images. The phase is reconstructed from the difference of the two amplitudes by transforming cosine waves into sine waves using the Hilbert transform. There are also other corrections which have to be applied in Fourier space. The two-sided pyramid wavefront sensor performs extremely well: After two or three iterations, the phase error varies purely in y. The two-sided pyramid pair enables the phase to be completely reconstructed. Its performance has been modeled closed loop with atmospheric turbulence and wind. Both photon noise and read noise were included. The three-sided and four-sided pyramid wavefront sensors have also been studied in direct phase mode. Neither performs nearly as well as does the two-sided pyramid wavefront sensor.

  9. Experimental study on the near wake behind two side-by-side cylinders of unequal diameters

    Science.gov (United States)

    Gao, Yangyang; Yu, Dingyong; Tan, Soonkeat; Wang, Xikun; Hao, Zhiyong

    2010-10-01

    The wake structure behind two side-by-side circular cylinders with unequal diameter was investigated using the particle image velocimetry (PIV) technique. This investigation focused on the asymmetrical flow within the subcritical Reynolds number regime. A comparison between the time-averaged mean flow field of one cylinder and that of two side-by-side cylinders of unequal diameter was made for elucidating the mean flow characteristics attributable to the latter. The distribution of mean velocity behind two side-by-side unequal cylinders was distinctly different from that behind one cylinder, and an asymmetric combination was observed behind the two cylinders. The present paper also presents the authors' interpretation of the generation mechanism of gap flow deflection based on the instantaneous vorticity contours and velocity distribution. The effect of Reynolds number on flow structure was studied by analyzing the mean velocity distribution and time-averaged wake structures. The results showed that vortex formation length decreases with Reynolds number.

  10. On revenue and welfare dominance of ad valorem taxes in two-sided markets

    DEFF Research Database (Denmark)

    Kind, Hans Jarle; Köthenbürger, Marko; Schjelderup, Guttorm

    2009-01-01

    A benchmark result in public economics is that it is possible to increase both tax revenue and welfare by making a monopoly subject to ad valorem taxes rather than unit taxes. We show that such revenue and welfare dominance does not hold in two-sided markets.......A benchmark result in public economics is that it is possible to increase both tax revenue and welfare by making a monopoly subject to ad valorem taxes rather than unit taxes. We show that such revenue and welfare dominance does not hold in two-sided markets....

  11. Meta-heuristic algorithm to solve two-sided assembly line balancing problems

    Science.gov (United States)

    Wirawan, A. D.; Maruf, A.

    2016-02-01

    Two-sided assembly line is a set of sequential workstations where task operations can be performed at two sides of the line. This type of line is commonly used for the assembly of large-sized products: cars, buses, and trucks. This paper propose a Decoding Algorithm with Teaching-Learning Based Optimization (TLBO), a recently developed nature-inspired search method to solve the two-sided assembly line balancing problem (TALBP). The algorithm aims to minimize the number of mated-workstations for the given cycle time without violating the synchronization constraints. The correlation between the input parameters and the emergence point of objective function value is tested using scenarios generated by design of experiments. A two-sided assembly line operated in an Indonesia's multinational manufacturing company is considered as the object of this paper. The result of the proposed algorithm shows reduction of workstations and indicates that there is negative correlation between the emergence point of objective function value and the size of population used.

  12. Prices and Network Externalities in Two-Sided Markets: The Belgian Newspaper Industry

    NARCIS (Netherlands)

    van Cayseele, P.; Vanormelingen, S.

    2007-01-01

    This paper discusses the newspaper industry in Belgium from a two-sided market perspective. The reader and advertizing market for printed media are closely interlinked with each other by bilateral network externalities. This requires a specific structural model to estimate demand parameters for both

  13. Prices and network effects in two-sided markets: the Belgian newspaper industry

    NARCIS (Netherlands)

    Van Cayseele, P.; Vanormelingen, S.

    2009-01-01

    This paper investigates the two-sided nature of the newspaper industry. We explicitly take into account cross network effects that exist between advertisers and newspaper readers. On one side, advertisers' demand for publicity space depends on the number of newspaper readers and their

  14. A SSNIP Test for Two-sided Markets : The Case of Media

    NARCIS (Netherlands)

    Filistrucchi, L.

    2008-01-01

    I discuss the design and implementation of a SSNIP test in order to identify the relevant market in a media market. I argue that in such a two-sided market the traditional SSNIP test cannot be applied as it is usually conceived but rather should be modified in order to take into account indirect net

  15. A SSNIP Test for Two-sided Markets : The Case of Media

    NARCIS (Netherlands)

    Filistrucchi, L.

    2008-01-01

    I discuss the design and implementation of a SSNIP test in order to identify the relevant market in a media market. I argue that in such a two-sided market the traditional SSNIP test cannot be applied as it is usually conceived but rather should be modified in order to take into account indirect

  16. Prices and network effects in two-sided markets: the Belgian newspaper industry

    NARCIS (Netherlands)

    Van Cayseele, P.; Vanormelingen, S.

    2009-01-01

    This paper investigates the two-sided nature of the newspaper industry. We explicitly take into account cross network effects that exist between advertisers and newspaper readers. On one side, advertisers' demand for publicity space depends on the number of newspaper readers and their characteristic

  17. Merger Simulation in a Two-Sided Market : The Case of the Dutch Daily Newspapers

    NARCIS (Netherlands)

    Filistrucchi, L.; Klein, T.J.; Michielsen, T.O.

    2010-01-01

    We develop a structural econometric framework that allows us to simulate the effects of mergers among two-sided platforms selling differentiated products. We apply the proposed methodology to the Dutch newspaper industry. Our structural model encompasses demands for differentiated products on both s

  18. Computer program determines exact two-sided tolerance limits for normal distributions

    Science.gov (United States)

    Friedman, H. A.; Webb, S. R.

    1968-01-01

    Computer program determines by numerical integration the exact statistical two-sided tolerance limits, when the proportion between the limits is at least a specified number. The program is limited to situations in which the underlying probability distribution for the population sampled is the normal distribution with unknown mean and variance.

  19. A Two-Sided Market Model of Optimal Price Structure for Instant Messenger

    Directory of Open Access Journals (Sweden)

    Jun Xu

    2013-01-01

    Full Text Available Instant messenger (IM is one of the most popular Internet applications all over the world. This paper examines the pricing problem of IM based on two-sided market model. IM serves as a two-sided platform, which gets both Internet users and advertisers on board. This paper concludes that IM operator adopts a heavily skewed price structure that favors IM users both under monopolistic case and under horizontal differentiated duopolistic case. When advertising revenue is large enough relatively to marginal cost for serving IM users, IM users can enjoy free service provided by IM operators. The competitive equilibrium of duopolistic case is not necessarily symmetric when advertisers choose singlehoming. Even in the symmetric equilibrium platform would rather deter all advertisers.

  20. Two-Sided Network Effects: A Theory of Information Product Design

    OpenAIRE

    Geoffrey G. Parker; Van Alstyne, Marshall W.

    2005-01-01

    How can firms profitably give away free products? This paper provides a novel answer and articulates trade-offs in a space of information product design. We introduce a formal model of two-sided network externalities based in textbook economics---a mix of Katz and Shapiro network effects, price discrimination, and product differentiation. Externality-based complements, however, exploit a different mechanism than either tying or lock-in even as they help to explain many recent strategies such ...

  1. Sparse two-sided rank-one updates for nonlinear equations

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    The two-sided rank-one (TR1) update method was introduced by Griewank and Walther (2002) for solving nonlinear equations. It generates dense approximations of the Jacobian and thus is not applicable to large-scale sparse problems. To overcome this difficulty, we propose sparse extensions of the TR1 update and give some convergence analysis. The numerical experiments show that some of our extensions are superior to the TR1 update method. Some convergence analysis is also presented.

  2. Reproduced Giant Localization Length of Two-Side Surface Disordered Nanowires with Long-Range Correlation

    Institute of Scientific and Technical Information of China (English)

    ZHAO Wei; DING Jian-Wen

    2011-01-01

    We numerically investigate the normalized localization length of two-side rough nanowires as functions of energy, magnetic field and correlation strength by using modular recursive Green's function method. It is found that in the absence of correlation, while in the presence of magnetic Reid, the localization length increases linearly for two-side roughness, which is different to diverging exponentially for one-side roughness. Moreover, the localization of electrons is suppressed in the low energy region, but enhanced in the high energy region. In the presence of correlation, especially, an exponential enhancement in the localization length resumes in high energy region, in contrast to that in low energy region, the long-range correlations abnormally enhance the localization of electrons. A competitive mechanism is proposed to explain this behavior.%We numerically investigate the normalized localization length of two-side rough nanowires as functions of energy,magnetic field and correlation strength by using modular recursive Green's function method.It is found that in the absence of correlation,while in the presence of magnetic field,the localization length increases linearly for two-side roughness,which is different to diverging exponentially for one-side roughness.Moreover,the localization of electrons is suppressed in the low energy region,but enhanced in the high energy region.In the presence of correlation,especially,an exponential enhancement in the localization length resumes in high energy region,in contrast to that in low energy region,the long-range correlations abnormally enhance the localization of electrons.A competitive mechanism is proposed to explain this behavior.Quantum dynamics of quasiparticles in random media has been a field of extensive study since the pioneering work by Anderson,[1] who argued that quasiparticle states become localized for sufficiently large disorder,thus giving rise to a localizationdelocalization transition (LDT) in three

  3. Experimental study on the near wake behind two side-by-side cylinders of unequal diameters

    Energy Technology Data Exchange (ETDEWEB)

    Gao Yangyang; Yu Dingyong [College of Engineering, Ocean University of China, Qingdao 266100 (China); Tan, Soonkeat [School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798 (Singapore); Wang Xikun [Maritime Research Center, Nanyang Technological University, Singapore 639798 (Singapore); Hao Zhiyong, E-mail: gaoyangyangouc@163.co [Shanghai Maritime University, Shanghai 200135 (China)

    2010-10-15

    The wake structure behind two side-by-side circular cylinders with unequal diameter was investigated using the particle image velocimetry (PIV) technique. This investigation focused on the asymmetrical flow within the subcritical Reynolds number regime. A comparison between the time-averaged mean flow field of one cylinder and that of two side-by-side cylinders of unequal diameter was made for elucidating the mean flow characteristics attributable to the latter. The distribution of mean velocity behind two side-by-side unequal cylinders was distinctly different from that behind one cylinder, and an asymmetric combination was observed behind the two cylinders. The present paper also presents the authors' interpretation of the generation mechanism of gap flow deflection based on the instantaneous vorticity contours and velocity distribution. The effect of Reynolds number on flow structure was studied by analyzing the mean velocity distribution and time-averaged wake structures. The results showed that vortex formation length decreases with Reynolds number.

  4. Signature-Discovery Approach for Sample Matching of a Nerve-Agent Precursor using Liquid Chromatography–Mass Spectrometry, XCMS, and Chemometrics

    Energy Technology Data Exchange (ETDEWEB)

    Fraga, Carlos G.; Clowers, Brian H.; Moore, Ronald J.; Zink, Erika M.

    2010-05-15

    This report demonstrates the use of bioinformatic and chemometric tools on liquid chromatography mass spectrometry (LC-MS) data for the discovery of ultra-trace forensic signatures for sample matching of various stocks of the nerve-agent precursor known as methylphosphonic dichloride (dichlor). The use of the bioinformatic tool known as XCMS was used to comprehensively search and find candidate LC-MS peaks in a known set of dichlor samples. These candidate peaks were down selected to a group of 34 impurity peaks. Hierarchal cluster analysis and factor analysis demonstrated the potential of these 34 impurities peaks for matching samples based on their stock source. Only one pair of dichlor stocks was not differentiated from one another. An acceptable chemometric approach for sample matching was determined to be variance scaling and signal averaging of normalized duplicate impurity profiles prior to classification by k-nearest neighbors. Using this approach, a test set of dichlor samples were all correctly matched to their source stock. The sample preparation and LC-MS method permitted the detection of dichlor impurities presumably in the parts-per-trillion (w/w). The detection of a common impurity in all dichlor stocks that were synthesized over a 14-year period and by different manufacturers was an unexpected discovery. Our described signature-discovery approach should be useful in the development of a forensic capability to help in criminal investigations following chemical attacks.

  5. Robust finite-time containment control for high-order multi-agent systems with matched uncertainties under directed communication graphs

    Science.gov (United States)

    Fu, Junjie; Wang, Jinzhi

    2016-06-01

    In this paper, we study the robust finite-time containment control problem for a class of high-order uncertain nonlinear multi-agent systems modelled as high-order integrator systems with bounded matched uncertainties. When relative state information between neighbouring agents is available, an observer-based distributed controller is proposed for each follower using the sliding mode control technique which solves the finite-time containment control problem under general directed communication graphs. When only relative output information is available, robust exact differentiators and high-order sliding-mode controllers are employed together with the distributed finite-time observers. It is shown that robust finite-time containment control can still be achieved in this situation. An application in the coordination of multiple non-holonomic mobile robots is used as an example to illustrate the effectiveness of the proposed control strategies.

  6. A note on P-values for two-sided tests.

    Science.gov (United States)

    Finner, Helmut; Strassburger, Klaus

    2007-12-01

    Based on uniformly most powerful unbiased (UMPU) tests for two-sided hypotheses and a short note in Lehmann (1959) on critical levels for randomized tests, Meulepas (1998, 1999) proposed (two-tailed) P -values taking into account the randomization constant(s) of the UMPU-tests. While UMPU-tests need an extra uniform observation if randomization is required, the P -values proposed by Meulepas need no extra uniform observation. At first glance, his idea looks very promising in order to define a suitable and powerful P -value. Unfortunately, such P -values are generally too conservative.

  7. Irradiance tailoring with two-sided Fresnel-type freeform optics

    Science.gov (United States)

    Bruneton, Adrien; Bäuerle, Axel; Traub, Martin; Wester, Rolf; Loosen, Peter

    2012-10-01

    Based on the Monge-Kantorovich theory of optimal mass transport, the computation of a ray mapping between source and target irradiances is used to design two-sided freeform lenses fulfilling the constraints of an automotive application: compactness and sharp bright-dark cutoff. A generic segmentation technic resulting in Fresnel-type optics is presented and the whole procedure is illustrated with the design of a fog light lens. Finally Monte Carlo simulation of the virtual model and measurements of a polycarbonate prototype are presented.

  8. Two-sided Mullins-Sekerka flow does not preserve convexity

    Directory of Open Access Journals (Sweden)

    Uwe F. Mayer

    1998-11-01

    Full Text Available The (two-sided Mullins-Sekerka model is a nonlocal evolution model for closed hypersurfaces, which was originally proposed as a model for phase transitions of materials of negligible specific heat. Under this evolution the propagating interfaces maintain the enclosed volume while the area of the interfaces decreases. We will show by means of an example that the Mullins-Sekerka flow does not preserve convexity in two space dimensions, where we consider both the Mullins-Sekerka model on a bounded domain, and the Mullins-Sekerka model defined on the whole plane.

  9. NUMERICAL SIMULATION OF FLOW OVER TWO SIDE-BY-SIDE CIRCULAR CYLINDERS

    Institute of Scientific and Technical Information of China (English)

    SARVGHAD-MOGHADDAM Hesam; NOOREDIN Navid; GHADIRI-DEHKORDI Behzad

    2011-01-01

    In the present paper,the unsteady,viscous,incompressible and 2-D flow around two side-by-side circular cylinders was simulated using a Cartesian-staggered grid finite volume based method.A great-source term technique was employed to identify the solid bodies (cylinders) located in the flow field and boundary conditions were enforced by applying the ghost-cell technique.Finally,the characteristics of the flow around two side-by-side cylinders were comprehensively obtained through several computational simulations.The computational simulations were performed for different transverse gap ratios (1.5≤T/D≤4) in laminar (Re =100,200 ) and turbulent (Re =104) regimes,where T and D are the distance between the centers of cylinders and the diameter of cylinders,respectively.The Reynolds number is based on the diameter of cylinders,D.The pressure field and vorticity distributions along with the associated streamlines and the time histories of hydrodynamic forces were also calculated and analyzed for different gap ratios.Generally,different flow patterns were observed as the gap ratio and Reynolds number varied.Accordingly,the hydrodynamic forces showed irregular variations for small gaps while they took a regular pattern at higher spacing ratios.

  10. Detection of two-sided alternatives in a Brownian motion model

    CERN Document Server

    Hadjiliadis, Olympia

    2007-01-01

    This work examines the problem of sequential detection of a change in the drift of a Brownian motion in the case of two-sided alternatives. Applications to real life situations in which two-sided changes can occur are discussed. Traditionally, 2-CUSUM stopping rules have been used for this problem due to their asymptotically optimal character as the mean time between false alarms tends to $\\infty$. In particular, attention has focused on 2-CUSUM harmonic mean rules due to the simplicity in calculating their first moments. In this paper, we derive closed-form expressions for the first moment of a general 2-CUSUM stopping rule. We use these expressions to obtain explicit upper and lower bounds for it. Moreover, we derive an expression for the rate of change of this first moment as one of the threshold parameters changes. Based on these expressions we obtain explicit upper and lower bounds to this rate of change. Using these expressions we are able to find the best 2-CUSUM stopping rule with respect to the exten...

  11. Heuristics for Multiobjective Optimization of Two-Sided Assembly Line Systems

    Directory of Open Access Journals (Sweden)

    N. Jawahar

    2014-01-01

    Full Text Available Products such as cars, trucks, and heavy machinery are assembled by two-sided assembly line. Assembly line balancing has significant impacts on the performance and productivity of flow line manufacturing systems and is an active research area for several decades. This paper addresses the line balancing problem of a two-sided assembly line in which the tasks are to be assigned at L side or R side or any one side (addressed as E. Two objectives, minimum number of workstations and minimum unbalance time among workstations, have been considered for balancing the assembly line. There are two approaches to solve multiobjective optimization problem: first approach combines all the objectives into a single composite function or moves all but one objective to the constraint set; second approach determines the Pareto optimal solution set. This paper proposes two heuristics to evolve optimal Pareto front for the TALBP under consideration: Enumerative Heuristic Algorithm (EHA to handle problems of small and medium size and Simulated Annealing Algorithm (SAA for large-sized problems. The proposed approaches are illustrated with example problems and their performances are compared with a set of test problems.

  12. First Direct Two-Sided Bound on the B_s^0 Oscillation Frequency

    CERN Document Server

    Abazov, V M; Abolins, M; Acharya, B S; Adams, M; Adams, T; Agelou, M; Agram, J L; Ahn, S H; Ahsan, M; Alexeev, G D; Alkhazov, G; Alton, A; Alverson, G; Alves, G A; Anastasoaie, M; Andeen, T; Anderson, S; Andrieu, B; Anzelc, M S; Arnoud, Y; Arov, M; Askew, A; Åsman, B; Assis-Jesus, A C S; Atramentov, O; Autermann, C; Avila, C; Ay, C; Badaud, F; Baden, A; Bagby, L; Baldin, B; Bandurin, D V; Banerjee, P; Banerjee, S; Barberis, E; Bargassa, P; Baringer, P; Barnes, C; Barreto, J; Bartlett, J F; Bassler, U; Bauer, D; Bean, A; Begalli, M; Begel, M; Belanger-Champagne, C; Bellavance, A; Benítez, J A; Beri, S B; Bernardi, G; Bernhard, R; Berntzon, L; Bertram, I; Besançon, M; Beuselinck, R; Bezzubov, V A; Bhat, P C; Bhatnagar, V; Binder, M; Biscarat, C; Black, K M; Blackler, I; Blazey, G; Blekman, F; Blessing, S; Bloch, D; Bloom, K; Blumenschein, U; Böhnlein, A; Boeriu, O; Bolton, T A; Borcherding, F; Borissov, G; Bos, K; Bose, T; Brandt, A; Brock, R; Brooijmans, G; Bross, A; Brown, D; Buchanan, N J; Buchholz, D; Bühler, M; Büscher, V; Burdin, S; Burke, S; Burnett, T H; Busato, E; Buszello, C P; Butler, J M; Calvet, S; Cammin, J; Caron, S; Carvalho, W; Casey, B C K; Cason, N M; Castilla-Valdez, H; Chakrabarti, S; Chakraborty, D; Chan, K M; Chandra, A; Chapin, D; Charles, F; Cheu, E; Chevallier, F; Cho, D K; Choi, S; Choudhary, B; Christofek, L; Claes, D; Clement, B; Clément, C; Coadou, Y; Cooke, M; Cooper, W E; Coppage, D; Corcoran, M; Cousinou, M C; Cox, B; Crepe-Renaudin, S; Cutts, D; Cwiok, M; Da Motta, H; Das, A; Das, M; Davies, B; Davies, G; Davis, G A; De, K; de Jong, P; De Jong, S J; De La Cruz-Burelo, E; De Oliveira Martins, C; Degenhardt, J D; Déliot, F; Demarteau, M; Demina, R; Demine, P; Denisov, D; Denisov, S P; Desai, S; Diehl, H T; Diesburg, M; Doidge, M; Dominguez, A; Dong, H; Dudko, L V; Duflot, L; Dugad, S R; Duperrin, A; Dyer, J; Dyshkant, A; Eads, M; Edmunds, D; Edwards, T; Ellison, J; Elmsheuser, J; Elvira, V D; Eno, S; Ermolov, P; Estrada, J; Evans, H; Evdokimov, A; Evdokimov, V N; Fatakia, S N; Feligioni, L; Ferapontov, A V; Ferbel, T; Fiedler, F; Filthaut, F; Fisher, W; Fisk, H E; Fleck, I; Ford, M; Fortner, M; Fox, H; Fu, S; Fuess, S; Gadfort, T; Galea, C F; Gallas, E; Galyaev, E; García, C; García-Bellido, A; Gardner, J; Gavrilov, V; Gay, A; Gay, P; Gelé, D; Gelhaus, R; Gerber, C E; Gershtein, Yu; Gillberg, D; Ginther, G; Gollub, N; Gómez, B; Gounder, K; Goussiou, A; Grannis, P D; Greenlee, H; Greenwood, Z D; Gregores, E M; Grenier, G; Gris, P; Grivaz, J F; Grünendahl, S; Grünewald, M W; Guo, F; Guo, J; Gutíerrez, G; Gutíerrez, P; Haas, A; Hadley, N J; Haefner, P; Hagopian, S; Haley, J; Hall, I; Hall, R E; Han, L; Hanagaki, K; Harder, K; Harel, A; Harrington, R; Hauptman, J M; Hauser, R; Hays, J; Hebbeker, T; Hedin, D; Hegeman, J G; Heinmiller, J M; Heinson, A P; Heintz, U; Hensel, C; Hesketh, G; Hildreth, M D; Hirosky, R; Hobbs, J D; Hoeneisen, B; Hohlfeld, M; Hong, S J; Hooper, R; Houben, P; Hu, Y; Hynek, V; Iashvili, I; Illingworth, R; Ito, A S; Jabeen, S; Jaffré, M; Jain, S; Jain, V; Jakobs, K; Jarvis, C; Jenkins, A; Jesik, R; Johns, K; Johnson, C; Johnson, M; Jonckheere, A; Jonsson, P; Juste, A; Käfer, D; Kahn, S; Kajfasz, E; Kalinin, A M; Kalk, J M; Kalk, J R; Kappler, S; Karmanov, D; Kasper, J; Katsanos, I; Kau, D; Kaur, R; Kehoe, R; Kermiche, S; Kesisoglou, S; Khanov, A; Kharchilava, A I; Kharzheev, Yu M; Khatidze, D; Kim, H; Kim, T J; Kirby, M H; Klima, B; Kohli, J M; Konrath, J P; Kopal, M; Korablev, V M; Kotcher, J; Kothari, B; Koubarovsky, A; Kozelov, A V; Kozminski, J; Kryemadhi, A; Krzywdzinski, S; Kühl, T; Kumar, A; Kunori, S; Kupco, A; Kurca, T; Kvita, J; Lager, S; Lammers, S; Landsberg, G L; Lazoflores, J; Le Bihan, A C; Lebrun, P; Lee, W M; Leflat, A; Lehner, F; Leonidopoulos, C; Lesne, V; Lévêque, J; Lewis, P; Li, J; Li, Q Z; Lima, J G R; Lincoln, D; Linnemann, J; Lipaev, V V; Lipton, R; Liu, Z; Lobo, L; Lobodenko, A; Lokajícek, M; Lounis, A; Love, P; Lubatti, H J; Lynker, M; Lyon, A L; Maciel, A K A; Madaras, R J; Mättig, P; Magass, C; Magerkurth, A; Magnan, A M; Makovec, N; Mal, P K; Malbouisson, H B; Malik, S; Malyshev, V L; Mao, H S; Maravin, Y; Martens, M; Mattingly, S E K; McCarthy, R; McCroskey, R; Meder, D; Melnitchouk, A; Mendes, A; Mendoza, L; Merkin, M; Merritt, K W; Meyer, A; Meyer, J; Michaut, M; Miettinen, H; Millet, T; Mitrevski, J; Molina, J; Mondal, N K; Monk, J; Moore, R W; Moulik, T; Muanza, G S; Mulders, M; Mulhearn, M; Mundim, L; Mutaf, Y D; Nagy, E; Naimuddin, M; Narain, M; Naumann, N A; Neal, H A; Negret, J P; Nelson, S; Neustroev, P; Nöding, C; Nomerotski, A; Novaes, S F; Nunnemann, T; O'Dell, V; O'Neil, D C; Obrant, G; Oguri, V; Oliveira, N; Oshima, N; Otec, R; Oteroy-Garzon, G J; Owen, M; Padley, P; Parashar, N; Park, S J; Park, S K; Parsons, J; Partridge, R; Parua, N; Patwa, A; Pawloski, G; Perea, P M; Pérez, E; Peters, K; Petroff, P; Petteni, M; Piegaia, R; Pleier, M A; Podesta-Lerma, P L M; Podstavkov, V M; Pogorelov, Y; Pol, M E; Pompos, A; Pope, B G; Popov, A V; Prado da Silva, W L; Prosper, H B; Protopopescu, S D; Qian, J; Quadt, A; Quinn, B; Rani, K J; Ranjan, K; Rapidis, P A; Ratoff, P N; Renkel, P; Reucroft, S; Rijssenbeek, M; Ripp-Baudot, I; Rizatdinova, F K; Robinson, S; Rodrigues, R F; Royon, C; Rubinov, P; Ruchti, R; Rud, V I; Sajot, G; Sánchez-Hernández, A; Sanders, M P; Santoro, A F S; Savage, G; Sawyer, L; Scanlon, T; Schaile, A D; Schamberger, R D; Scheglov, Y; Schellman, H; Schieferdecker, P; Schmitt, C; Schwanenberger, C; Schwartzman, A; Schwienhorst, R; Sen-Gupta, S; Severini, H; Shabalina, E; Shamim, M; Shary, V; Shchukin, A A; Shephard, W D; Shivpuri, R K; Shpakov, D; Siccardi, V; Sidwell, R A; Simák, V; Sirotenko, V I; Skubic, P L; Slattery, P F; Smith, R P; Snow, G R; Snow, J; Snyder, S; Söldner-Rembold, S; Song, X; Sonnenschein, L; Sopczak, A; Sosebee, M; Soustruznik, K; Souza, M; Spurlock, B; Stark, J; Steele, J; Stevenson, K; Stolin, V; Stone, A; Stoyanova, D A; Strandberg, J; Strang, M A; Strauss, M; Ströhmer, R; Strom, D; Strovink, M; Stutte, L; Sumowidagdo, S; Sznajder, A; Talby, M; Tamburello, P; Taylor, W; Telford, P; Temple, J; Tiller, B; Titov, M; Tokmenin, V V; Tomoto, M; Toole, T; Torchiani, I; Towers, S; Trefzger, T; Trincaz-Duvoid, S; Tsybychev, D; Tuchming, B; Tully, C; Turcot, A S; Tuts, P M; Unalan, R; Uvarov, L; Uvarov, S; Uzunyan, S; Vachon, B; Vanden Berg, P J; Van Kooten, R; Van Leeuwen, W M; Varelas, N; Varnes, E W; Vartapetian, A H; Vasilyev, I A; Vaupel, M; Verdier, P; Vertogradov, L S; Verzocchi, M; Villeneuve-Séguier, F; Vint, P; Vlimant, J R; Von Törne, E; Voutilainen, M; Vreeswijk, M; Wahl, H D; Wang, L; Warchol, J; Watts, G; Wayne, M; Weber, M; Weerts, H; Wermes, N; Wetstein, M; White, A; Wicke, D; Wilson, G W; Wimpenny, S J; Wobisch, M; Womersley, J; Wood, D R; Wyatt, T R; Xie, Y; Xuan, N; Yacoob, S; Yamada, R; Yan, M; Yasuda, T; Yatsunenko, Y A; Yip, K; Yoo, H D; Youn, S W; Yu, C; Yu, J; Yurkewicz, A; Zatserklyaniy, A; Zeitnitz, C; Zhang, D; Zhao, T; Zhao, Z; Zhou, B; Zhu, J; Zielinski, M; Zieminska, D; Zieminski, A; Zutshi, V

    2006-01-01

    We report the first direct two-sided bound on the $B^0_s$ oscillation frequency using a large sample of $B^0_s$ semileptonic decays corresponding to approximately 1 fb$^{-1}$ of integrated luminosity collected by the \\dzer\\ experiment in 2002--2006 during Run II of the Fermilab Tevatron Collider. The flavor (i.e., $B^0_s$ or $\\bar{B}^0_s$) of the \\bs meson at the time of production was found using an opposite-side tagging technique, and the flavor at the time of decay was determined from the charge of the muon in the partially reconstructed decay $\\bs\\to \\mu^{+}D_{s}^{-}X$, $D_{s}^{-}\\to \\phi \\pi^{-}$, $\\phi\\to K^{+}K^{-}$. A likelihood scan over the oscillation frequency, $\\Delta m_s$, gives a most probable value of 19 ps$^{-1}$ and a range of $17 < \\Delta m_s < 21$ ps$^{-1}$ at the 90% C.L. At $\\Delta m_s=19$ ps$^{-1}$, the amplitude method yields a result that deviates from the hypothesis of an oscillation amplitude of zero by 2.5 standard deviations, corresponding to a two-sided C.L. of 1%.

  13. Interaction of Gap Flow With Flapping Dynamics of Two Side-by-Side Elastic Foils

    Science.gov (United States)

    Gurugubelli, Pardha S.; Jaiman, Rajeev K.

    2016-11-01

    We present a numerical analysis on the interaction between two side-by-side elastic foils with their leading edges clamped and the gap flow between them. We perform systematic parametric direct numerical simulations as a function of nondimensional bending rigidity, KB ∈ [ 1 ×10-4 , 3 ×10-3 ] and mass-ratio, m* ∈ [ 0 . 05 , 0 . 2 ] , for a fixed gap, dp = 0 . 2 / L , at the leading edge and Reynolds number, Re = 1000 to explain the underlying physical mechanism behind the in-phase and out-of-phase coupled flapping modes. The parametric simulations show that the parallel foil system exhibits predominant out-of-phase coupling for low mass-ratio m* 0 . 1 . We also show that the two side-by-side elastic foils always exhibit out-of-phase coupling initially irrespective of whether the fully developed flapping show out-of-phase or in-phase coupled mode. Finally, we show that the transition from the initial out-of-phase to stable in-phase is characterized by loss of gap flow symmetric stability to undergo oscillations at the gap exit.

  14. Slip effects on a generalized Burgers’ fluid flow between two side walls with fractional derivative

    Directory of Open Access Journals (Sweden)

    Shihao Han

    2016-01-01

    Full Text Available This paper presents a research for the 3D flow of a generalized Burgers’ fluid between two side walls generated by an exponential accelerating plate and a constant pressure gradient, where the no-slip assumption between the exponential accelerating plate and the Burgers’ fluid is no longer valid. The governing equations of the generalized Burgers’ fluid flow are established by using the fractional calculus approach. Exact analytic solutions for the 3D flow are established by employing the Laplace transform and the finite Fourier sine transform. Furthermore, some 3D and 2D figures for the fluid velocity and shear stress are plotted to analyze and discuss the effects of various parameters.

  15. Indirect-drive inertial fusion targets for two-sided heavy-ion illumination

    Science.gov (United States)

    Remizov, G. N.; Romanov, Yu. A.; Ryabikina, N. A.; Shagaliev, R. M.; Vakhlamova, L. L.; Vatulin, V. V.; Vinokurov, O. A.; Bock, R.; Kang, K.-H.; Maruhn, J. A.

    The properties of heavy-ion induced fusion targets with two-sided illumination and with the converters placed completely inside the hohlraum have been investigated using integrated simulations based on the SATURN and MIMOZA code packages in order to check the results obtained with the view factor method in previous work, which is briefly reviewed. Separate converter simulations show the importance of an accurate treatment of radiation transport and also demonstrate that a converter efficiency of 40 - 80% can be achieved easily depending on the detailed converter material and geometry. For the complete target, a gas fill is shown to be necessary and it turned out to be very important to allow some of the radiation shields to become partially transparent during the evolution. In the most favorable case, an asymmetry in the temperature on the capsule of about 5% was achieved, leading to a reduction of the neutron yield by a factor of 7 compared to an ideally symmetric situation.

  16. An Optimization of Granular Networks Based on PSO and Two-Sided Gaussian Contexts

    Directory of Open Access Journals (Sweden)

    Keun Chang Kwak

    2012-12-01

    Full Text Available This paper is concerned with an optimization of GN (Granular Networks based on PSO (Particle Swarm Optimization and Information granulation. The GN is designed by the linguistic model using context-based fuzzy c-means clustering algorithm performing relationship between fuzzy sets defined in the input and output space. The contexts used in this paper are based on two-sided Gaussian membership functions. The main goal of optimization based on PSO is to find the number of clusters obtained in each context and weighting factor. Finally, we apply to coagulant dosing process in a water purification plant to evaluate the predication performance and compare the proposed approach with other previous methods.

  17. The deinkability improvement of offset prints made from a two-side coated substrate

    Directory of Open Access Journals (Sweden)

    Zeljka Barbaric-Mikocevic

    2013-02-01

    Full Text Available This paper describes the improved removal of impurities (coating, ink/toner from offset prints produced by digital printing of two-side coated paper. The substrates were printed by conventional and digital offset processes. Based on image analysis results it was established that deinking flotation is an inefficient method for ink particle removal from digital offset printed paper, but it is efficient for ink removal from conventional offset printed paper. On the other hand, pre-treatment with hydrogen peroxide solution gives better results for ink particle removal from digital offset prints than from conventional offset prints. Optimal parameters for hydrogen peroxide pre-treatment for both offset prints were chosen based on unprinted substrate mass loss results in the preliminary investigation. These results showed that hydrogen peroxide pre-treatment is more successful at removal of impurities in comparison with flotation deinking without pre-treatment.

  18. Measured Data Processing Method For Relative Motions Between Two Side-by-side Ships

    Directory of Open Access Journals (Sweden)

    Ping-an Shi

    2013-01-01

    Full Text Available In order to design and implement a wave compensation system to reduce the relative motion between two side-by-side ships in waves, a new method to process measured data of ship model test with contact measurement to study the characteristics of relative motion was presented. The reference co-ordinate systems and relative motions were defined, and the scheme of the model test was described. Then the Empirical Mode Decomposition(EMD adaptive filter were designed, the frequency domain integration transform method based upon Fast Fourier Transform(FFT were established. The procedure to transform acceleration signal into displacement was proposed and verified, and the processing results with and without EMD adaptive filter were compared. Finally, the relative motions consistent with reality were acquired, which indicates this method is effective for measured data processing.

  19. Coupled resonator induced transparency in surface plasmon polariton gap waveguide with two side-coupled cavities

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Zhengren, E-mail: zhrenzhang@126.com [School of Science, Chongqing Jiaotong University, Chongqing 400074 (China); Zhang, Liwei [School of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454000 (China); Yin, Pengfei; Han, Xiangyu [School of Science, Chongqing Jiaotong University, Chongqing 400074 (China)

    2014-08-01

    We investigate theoretically the generation process of coupled resonator-induced transparency (CRIT) in surface plasmon polariton gap waveguide system containing two side-coupled cavities, which locate at a symmetric position. The CRIT is original from the destructive interference of the two detuned cavities. In contrast with the existing electromagnetically induced transparency (EIT) schemes, the occurrence of the CRIT is caused by the two radiative cavities in waveguide, instead of interference between a dark cavity and radiative cavity. This behavior mimics the quantum interference between two direct excitation pathways in a three-level V-type atom. The transmission lineshape can be tuned between an EIT-like resonant peak and a Lorentzian-like resonant dip by tailoring the detuning of the two cavities. Moreover, we also find that the transparency peak moves to high frequency with a line shift and its Q factor decreases with the increase of coupling distance between the cavities and waveguide.

  20. The stratified two-sided jet of Cygnus A. Acceleration and collimation

    CERN Document Server

    Boccardi, B; Bach, U; Mertens, F; Ros, E; Alef, W; Zensus, J A

    2016-01-01

    High-resolution Very-Long-Baseline Interferometry observations of relativistic jets are essential to constrain fundamental parameters of jet formation models. At a distance of 249 Mpc, Cygnus A is a unique target for such studies, being the only Fanaroff-Riley Class II radio galaxy for which a detailed sub-parsec scale imaging of the base of both jet and counter-jet can be obtained. Observing at millimeter wavelengths unveils those regions which appear self-absorbed at longer wavelengths and enables an extremely sharp view towards the nucleus to be obtained. We performed 7 mm Global VLBI observations, achieving ultra-high resolution imaging on scales down to 90 $\\mu$as. This resolution corresponds to a linear scale of only ${\\sim}$400 Schwarzschild radii (for $M_{\\mathrm{BH}}=2.5 \\times 10^9 M_{\\odot}$). We studied the kinematic properties of the main emission features of the two-sided flow and probed its transverse structure through a pixel-based analysis. We suggest that a fast and a slow layer, with differ...

  1. Three--dimensional Instability in the Wake of Two Side--by--side Square Cylinders

    Science.gov (United States)

    Choi, Choon-Bum; Jang, Yong-Jun; Yang, Kyung-Soo

    2011-11-01

    Three-dimensional instability in the flow past two square cylinders in side-by-side arrangements has been numerically studied via a Floquet stability analysis. The distance between the neighboring faces of the two cylinders (G) is the key parameter which affects the secondary instability under consideration. In this talk, we present the critical Reynolds number for the 3D instability and the spanwise wave number corresponding to the most unstable (or least stable) wave for each G. When the two cylinders are close to each other, the Floquet mode resembles mode A of flow past a single cylinder. For large G, the Floquet mode for each cylinder is independent of the neighboring cylinder as expected. In the range of intermediate G, interference of the two wakes is clearly reflected in the Floquet mode. We also discuss about the effect of gap flow, and visualization of the dominant 3D vortical structures is provided by using Q contours. Our results shed light on a complete understanding of the onset of 3D instability in the presence of two side-by-side square cylinders. This work was supported by Korea Railroad Research Institute (Research Title: The study of standardization for urban railway facilities (SW 11002)).

  2. Low contrast detectability of a new CR system with two-sided reading

    Energy Technology Data Exchange (ETDEWEB)

    Katou, Toyoyuki; Ogawa, Kazuhisa; Umezu, Yoshiyuki; Kinoshita, Emi; Shinkai, Eishu [Kyushu Univ., Fukuoka (Japan). Hospital; Ohki, Masafumi; Toyofuku, Fukai; Higashida, Yoshiharu [Kyushu Univ., Fukuoka (Japan). Faculty of Medicine

    2003-03-01

    A new imaging plate (IP) with a transparent support and reading system that can detect emissions from both sides of the IP has been developed and has already been introduced in some facilities. In this study, low contrast threshold detectability was investigated experimentally for a CR system with a two-sided reading system (new CR) and for a conventional CR system. Images of a Contrast-Detail phantom were obtained with the new and conventional CR systems at dose levels corresponding to 26%, 49%, 82%, 103%, and 164% of the dose used for the screen-film system. Using an observer performance study of Contrast-Detail phantom images, the threshold contrast of disk-shaped objects ranging from 0.3 mm to 4.0 mm in diameter was determined. We also calculated image quality figure (IQF) from the results of observation. The new CR system showed significantly better contrast detectability than the conventional CR system. The use of a new CR system provided a reduction of approximately 25% in radiographic dose while providing comparable IQF. (author)

  3. Indirect two-sided relative ranking: a robust similarity measure for gene expression data

    Directory of Open Access Journals (Sweden)

    Licamele Louis

    2010-03-01

    Full Text Available Abstract Background There is a large amount of gene expression data that exists in the public domain. This data has been generated under a variety of experimental conditions. Unfortunately, these experimental variations have generally prevented researchers from accurately comparing and combining this wealth of data, which still hides many novel insights. Results In this paper we present a new method, which we refer to as indirect two-sided relative ranking, for comparing gene expression profiles that is robust to variations in experimental conditions. This method extends the current best approach, which is based on comparing the correlations of the up and down regulated genes, by introducing a comparison based on the correlations in rankings across the entire database. Because our method is robust to experimental variations, it allows a greater variety of gene expression data to be combined, which, as we show, leads to richer scientific discoveries. Conclusions We demonstrate the benefit of our proposed indirect method on several datasets. We first evaluate the ability of the indirect method to retrieve compounds with similar therapeutic effects across known experimental barriers, namely vehicle and batch effects, on two independent datasets (one private and one public. We show that our indirect method is able to significantly improve upon the previous state-of-the-art method with a substantial improvement in recall at rank 10 of 97.03% and 49.44%, on each dataset, respectively. Next, we demonstrate that our indirect method results in improved accuracy for classification in several additional datasets. These datasets demonstrate the use of our indirect method for classifying cancer subtypes, predicting drug sensitivity/resistance, and classifying (related cell types. Even in the absence of a known (i.e., labeled experimental barrier, the improvement of the indirect method in each of these datasets is statistically significant.

  4. Intrinsic features of flow around two side-by-side square cylinders

    Science.gov (United States)

    Alam, Md. Mahbub; Zhou, Y.

    2013-08-01

    The wake of two side-by-side square cylinders is investigated in detail based on flow visualization at a Reynolds number (Re) of 300. The cylinder center-to-center spacing ratio T* (= T/W, W is the cylinder width) is varied from 1.0 to 5.0. The intrinsic features of the wake are explored, including the gap vortices, flow switch, stability, merging of two streets into one, etc. The qualitative information on these features is further complemented by the quantitative information extracted from hotwire data at Re = 4.7 × 104 using both spectral and cross-wavelet analyses. Four flow regimes are identified: (i) the single bluff body regime (T* 2.4). The gap flow is found to switch at two distinct time scales, referred to as macro and micro switches. Macro switch occurs at 1.2 gap flow is slim in width and biased for a long duration ranging from several vortex shedding periods in the wide street to several hours. Micro switch is observed at 2.1 gap flow is thick in width and switches at a frequency of twice the frequency of vortex shedding from the free-stream side of the cylinders. The two streets formed immediately behind the cylinders merge to a single street at a downstream location x_c^* that depends on T*. A larger T* corresponds to a larger x_c^*. Regime (iv) is characterized by two streets either inphased or antiphased. The antiphased streets persist longer than the inphased.

  5. Laboratory Research on Effective Test Area of Short-Crested Waves Generated by Two-Sided Segmented Wavemakers

    Institute of Scientific and Technical Information of China (English)

    李俊; 陈刚; 杨建民; 彭涛

    2014-01-01

    The size and shape of the effective test area are crucial to consider when short-crested waves are created by segmented wavemakers. The range of the effective test area of short-crested waves simulated by two-sided segmented wavemakers is analyzed in this paper. The experimental investigation on the wave field distribution of short-crested waves generated by two-sided segmented wavemakers is conducted by using an array of wave gauges. Wave spectra and directional spreading function are analyzed and the results show that when the main direction is at a certain angle with the normal line of wave generators, the wave field of 3D short-crested waves generated by two-sided segmented wavemakers has good spatial uniformity within the model test area. The effective test area can provide good wave environments for seakeeping model tests of various ocean engineering structures in the deep ocean engineering basin.

  6. One-sided or Two-sided Fee: The Choice of Pricing Modes in Media Two-sided Markets%单边收费还是双边收费:双边市场中媒体定价模式选择

    Institute of Scientific and Technical Information of China (English)

    程贵孙

    2011-01-01

    向一边用户收费还是向两边用户同时收费,是双边市场中众多平台企业在制定价格策略时面临的两难选择.本文以垄断媒体平台为例,考察了垄断媒体对单边收费和双边收费的最优定价模式选择问题.研究发现,媒体订阅量给广告商带来的网络效应强度和媒体内容产品质量参数,它们所形成的广告商与消费者之间的"相对价值比效应指数",将影响到垄断媒体对定价模式的选择.%Platform firms play an important role in e-business. Platform firms charge two groups of agents in exchange for their product and service offerings. Any platform firms in a two-sided market need to deal with the pricing dilemma of charging one-sided user or two-sided users. Advertisement can cause a negative externality on customers because customers usually dislike advertising. Different pricing models can be formulated to compare media platforms using advertisement, with platforms not using advertisement. This paper will present a model of a two-sided vertically differentiated market and use a model to find an optimal pricing model for charging onesided user or two-sided users in a monopolist media platform.This paper is organized as follows. Section 1 discusses related literature and research objectives. Section 2 describes our proposed model. Section 3 discusses the consumer payment pricing model and price equilibrium solutions. Media platforms do not use any advertisements and charge consumers a subscription fee in the consumer payment pricing model. Section 4 discusses the advertiser's payment pricing model and the price equilibrium solutions. In the advertiser's payment pricing model, media platforms allow advertisements and charge the advertisers an advertising fee. Consumers can subscribe to the advertising service for free. Section 5 discusses the two-sided payment pricing model and price equilibrium solutions. In this pricing model, media platforms charge consumers different

  7. Slowing and Loss of Complexity in Alzheimer's EEG: Two Sides of the Same Coin?

    Directory of Open Access Journals (Sweden)

    Justin Dauwels

    2011-01-01

    Full Text Available Medical studies have shown that EEG of Alzheimer's disease (AD patients is “slower” (i.e., contains more low-frequency power and is less complex compared to age-matched healthy subjects. The relation between those two phenomena has not yet been studied, and they are often silently assumed to be independent. In this paper, it is shown that both phenomena are strongly related. Strong correlation between slowing and loss of complexity is observed in two independent EEG datasets: (1 EEG of predementia patients (a.k.a. Mild Cognitive Impairment; MCI and control subjects; (2 EEG of mild AD patients and control subjects. The two data sets are from different patients, different hospitals and obtained through different recording systems. The paper also investigates the potential of EEG slowing and loss of EEG complexity as indicators of AD onset. In particular, relative power and complexity measures are used as features to classify the MCI and MiAD patients versus age-matched control subjects. When combined with two synchrony measures (Granger causality and stochastic event synchrony, classification rates of 83% (MCI and 98% (MiAD are obtained. By including the compression ratios as features, slightly better classification rates are obtained than with relative power and synchrony measures alone.

  8. Matching theory

    CERN Document Server

    Plummer, MD

    1986-01-01

    This study of matching theory deals with bipartite matching, network flows, and presents fundamental results for the non-bipartite case. It goes on to study elementary bipartite graphs and elementary graphs in general. Further discussed are 2-matchings, general matching problems as linear programs, the Edmonds Matching Algorithm (and other algorithmic approaches), f-factors and vertex packing.

  9. Pattern matching

    NARCIS (Netherlands)

    A. Hak (Tony); J. Dul (Jan)

    2009-01-01

    textabstractPattern matching is comparing two patterns in order to determine whether they match (i.e., that they are the same) or do not match (i.e., that they differ). Pattern matching is the core procedure of theory-testing with cases. Testing consists of matching an “observed pattern” (a pattern

  10. Two Sides of the Same Coin: The Scope of Free Speech and Hate Speech in the College Community.

    Science.gov (United States)

    Schuett, Faye

    2000-01-01

    This article presents the Two Sides interviews, which confront the serious and immediate conflict between free speech and hate speech on college campuses. Dr. Robert O' Neil discusses the scope of free speech in the college community, while Dr. Timothy Shiell focuses on hate speech on campuses. Contains 12 references. (VWC)

  11. Two Sides of the Same Coin: The Scope of Free Speech and Hate Speech in the College Community.

    Science.gov (United States)

    Schuett, Faye

    2000-01-01

    This article presents the Two Sides interviews, which confront the serious and immediate conflict between free speech and hate speech on college campuses. Dr. Robert O' Neil discusses the scope of free speech in the college community, while Dr. Timothy Shiell focuses on hate speech on campuses. Contains 12 references. (VWC)

  12. Assessing Unilateral Merger Effects in a Two-Sided Market : An Application to the Dutch Daily Newspaper Market

    NARCIS (Netherlands)

    Filistrucchi, L.; Klein, T.J.; Michielsen, T.O.

    2011-01-01

    We compare different methods to assess unilateral merger effects in a two-sided market by applying them to a hypothetical merger in the Dutch newspaper industry. For this, we first specify and estimate a structural model of demand for differentiated products on both the readership and the advertisin

  13. 双边Prequantale中的Frame核映射%A Frame Nucleus on a Two-side Prequantale

    Institute of Scientific and Technical Information of China (English)

    徐少贤; 王顺钦; 马菲菲

    2004-01-01

    In this paper, a Frame nucleus and prime elements in a Prequantale are defined.The concrete structure of a Frame prequantic quotient is considered, and the relation between the half-prime element and the Frame nucleus in a two-side Prequantale are obtained.

  14. Hypericin in the Light and in the Dark: Two Sides of the Same Coin.

    Science.gov (United States)

    Jendželovská, Zuzana; Jendželovský, Rastislav; Kuchárová, Barbora; Fedoročko, Peter

    2016-01-01

    Hypericin (4,5,7,4',5',7'-hexahydroxy-2,2'-dimethylnaphtodianthrone) is a naturally occurring chromophore found in some species of the genus Hypericum, especially Hypericum perforatum L. (St. John's wort), and in some basidiomycetes (Dermocybe spp.) or endophytic fungi (Thielavia subthermophila). In recent decades, hypericin has been intensively studied for its broad pharmacological spectrum. Among its antidepressant and light-dependent antiviral actions, hypericin is a powerful natural photosensitizer that is applicable in the photodynamic therapy (PDT) of various oncological diseases. As the accumulation of hypericin is significantly higher in neoplastic tissue than in normal tissue, it can be used in photodynamic diagnosis (PDD) as an effective fluorescence marker for tumor detection and visualization. In addition, light-activated hypericin acts as a strong pro-oxidant agent with antineoplastic and antiangiogenic properties, since it effectively induces the apoptosis, necrosis or autophagy of cancer cells. Moreover, a strong affinity of hypericin for necrotic tissue was discovered. Thus, hypericin and its radiolabeled derivatives have been recently investigated as potential biomarkers for the non-invasive targeting of tissue necrosis in numerous disorders, including solid tumors. On the other hand, several light-independent actions of hypericin have also been described, even though its effects in the dark have not been studied as intensively as those of photoactivated hypericin. Various experimental studies have revealed no cytotoxicity of hypericin in the dark; however, it can serve as a potential antimetastatic and antiangiogenic agent. On the contrary, hypericin can induce the expression of some ABC transporters, which are often associated with the multidrug resistance (MDR) of cancer cells. Moreover, the hypericin-mediated attenuation of the cytotoxicity of some chemotherapeutics was revealed. Therefore, hypericin might represent another St. John's wort

  15. Hypericin in the light and in the dark: Two sides of the same coin

    Directory of Open Access Journals (Sweden)

    Zuzana eJendzelovska

    2016-05-01

    Full Text Available Hypericin (4,5,7,4',5',7'-hexahydroxy-2,2'-dimethylnaphtodiantrone is a naturally occurring chromophore found in plants of the genus Hypericum, especially Hypericum perforatum L. (St. John’s wort, and in some basidiomycetes (Dermocybe spp. or endophytic fungi (Thielavia subthermophila. In recent decades, hypericin has been intensively studied for its broad pharmacological spectrum. Among its antidepressant and light-dependent antiviral actions, hypericin is a powerful natural photosensitizer that is applicable in the photodynamic therapy (PDT of various oncological diseases. As the accumulation of hypericin is significantly higher in neoplastic tissue than in normal tissue, it can be used in photodynamic diagnosis (PDD as an effective fluorescence marker for tumor detection and visualization. In addition, light-activated hypericin acts as a strong pro-oxidant agent with antineoplastic and antiangiogenic properties, since it effectively induces the apoptosis, necrosis or autophagy of cancer cells. Moreover, a strong affinity of hypericin for necrotic tissue was discovered. Thus, hypericin and its radiolabeled derivatives have been recently investigated as potential biomarkers for the non-invasive targeting of tissue necrosis in numerous disorders, including solid tumors. On the other hand, several light-independent actions of hypericin have also been described, even though its effects in the dark have not been studied as intensively as those of photoactivated hypericin. Various experimental studies have revealed no cytotoxicity of hypericin in the dark; however, it can serve as a potential antimetastatic and antiangiogenic agent. On the contrary, hypericin can induce the expression of some ABC transporters, which are often associated with the multidrug resistance (MDR of cancer cells. Moreover, the hypericin-mediated attenuation of the cytotoxicity of some chemotherapeutics was revealed. Therefore, hypericin might represent another St. John

  16. Likelihood ratio and posterior odds in forensic genetics: Two sides of the same coin.

    Science.gov (United States)

    Caliebe, Amke; Walsh, Susan; Liu, Fan; Kayser, Manfred; Krawczak, Michael

    2017-03-06

    It has become widely accepted in forensics that, owing to a lack of sensible priors, the evidential value of matching DNA profiles in trace donor identification or kinship analysis is most sensibly communicated in the form of a likelihood ratio (LR). This restraint does not abate the fact that the posterior odds (PO) would be the preferred basis for returning a verdict. A completely different situation holds for Forensic DNA Phenotyping (FDP), which is aimed at predicting externally visible characteristics (EVCs) of a trace donor from DNA left behind at the crime scene. FDP is intended to provide leads to the police investigation helping them to find unknown trace donors that are unidentifiable by DNA profiling. The statistical models underlying FDP typically yield posterior odds (PO) for an individual possessing a certain EVC. This apparent discrepancy has led to confusion as to when LR or PO is the appropriate outcome of forensic DNA analysis to be communicated to the investigating authorities. We thus set out to clarify the distinction between LR and PO in the context of forensic DNA profiling and FDP from a statistical point of view. In so doing, we also addressed the influence of population affiliation on LR and PO. In contrast to the well-known population dependency of the LR in DNA profiling, the PO as obtained in FDP may be widely population-independent. The actual degree of independence, however, is a matter of (i) how much of the causality of the respective EVC is captured by the genetic markers used for FDP and (ii) by the extent to which non-genetic such as environmental causal factors of the same EVC are distributed equally throughout populations. The fact that an LR should be communicated in cases of DNA profiling whereas the PO are suitable for FDP does not conflict with theory, but rather reflects the immanent differences between these two forensic applications of DNA information.

  17. Managing hypertriglyceridemia in children with systemic lupus erythematosus: Two sides of the same coin.

    Science.gov (United States)

    Basu, Biswanath; Babu, Binu George; Bhattacharyya, Suman

    2016-10-04

    Hypertriglyceridemia is common in children with systemic lupus erythematosus (SLE). A retrospective analysis of the baseline clinical-pathological presentation and treatment outcome (status of lipid profiles) was performed in two children with SLE, who presented with extreme hypertriglyceridemia over a follow-up period of four weeks. The children were treated with prednisolone, mycophenolate mofetil (MMF), hydroxychloroquine and hypolipidemic agents, depending on their disease status. On serial follow-up, the first child showed a significantly raised serum triglyceride level after receiving one week of oral prednisolone therapy. Anti-lipoprotein-lipase (LPL) autoantibody was absent. Lipid profile levels of this child gradually improved after replacing oral prednisolone with another immunosuppressant, namely MMF. The second child presented with extreme hypertriglyceridemia with positive anti-LPL autoantibody. She responded to plasmapheresis followed by increasing the dose of immunosuppressant. So, extreme hypertriglyceridemia in children with SLE may be steroid induced or due to presence of anti-LPL auto antibody. Management should be individualized depending on the etiology. Copyright © 2016 Elsevier España, S.L.U. and Sociedad Española de Reumatología y Colegio Mexicano de Reumatología. All rights reserved.

  18. Pattern matching

    OpenAIRE

    Hak, Tony; Dul, Jan

    2009-01-01

    textabstractPattern matching is comparing two patterns in order to determine whether they match (i.e., that they are the same) or do not match (i.e., that they differ). Pattern matching is the core procedure of theory-testing with cases. Testing consists of matching an “observed pattern” (a pattern of measured values) with an “expected pattern” (a hypothesis), and deciding whether these patterns match (resulting in a confirmation of the hypothesis) or do not match (resulting in a disconfirmat...

  19. Analysis on Granular Two-sided Market%颗粒化双边市场分析

    Institute of Scientific and Technical Information of China (English)

    刘钰碧; 徐晓峰; 朱卫未

    2016-01-01

    The common value orientation makes the main reason that maintains stickiness of social network platform user. User with powerful stickiness creates granular two-sided market by design the business model elaborates on the social network. This thesis research the granular two-sided market,try discusses its generation, development, prospective and business model.%在社交平台中共同的价值取向是保持用户黏性的主要原因。在精确设计的商业模式引导下,具有强黏性的用户会通过社交平台形成颗粒化的双边市场。文章探讨了颗粒化双边市场的产生、发展以及前景,并对其商业模式进行了阐述。

  20. The role of two-sided splinting for recalcitrant paediatric post-burn hand flexion contracture: a case report.

    Science.gov (United States)

    Prasetyono, Toh; Caroline, I

    2017-07-01

    A 2-year-old boy presented to the plastic and reconstructive surgery outpatient clinic with bilateral post-burn hand flexion contracture. The contracture had been released twice elsewhere. The third surgical repair on one hand at a time was conducted by the author (TOHP). However, inadeq.uate compliance to the postoperative splinting and exercise led to the recurrence of the contracture in the following year. A customised two-sided splint was therefore created to ensure proper placement and compliance. Reinforcement to the parents to encourage the boy to practise active exercise on demand was also an integral part of the management. Good functional and cosmetic outcome were presented at 1-year follow-up. This case highlights the value of a two-sided splint for the management of post-burn hand flexion contracture in children whose compliance is inevitably cannot be guaranteed.

  1. The effect of curve sawing two-sided cants from small diameter hardwood sawlogs on lumber and pallet part yields

    Science.gov (United States)

    Peter Hamner; Marshall S. White; Philip A. Araman

    2006-01-01

    Curve sawing is a primary log breakdown process that incorporates gang-saw technology to allow two-sided cants from logs with sweep to be cut parallel to the log surface or log axis. Since curve-sawn logs with sweep are cut along the grain, the potential for producing high quality straight-grain lumber and cants increases, and strength, stiffness, and dimensional...

  2. Impurity-defect structure of anodic aluminum oxide produced by two-sided anodizing in tartaric acid

    Science.gov (United States)

    Chernyakova, K. V.; Vrublevsky, I. A.; Ivanovskaya, M. I.; Kotsikau, D. A.

    2012-03-01

    Porous aluminum oxide is prepared in a 0.4 M aqueous solution of tartaric acid by two-sided anodizing. Fourier Transform IR spectroscopy (FTIR) data reveal the presence, in the alumina, of unoxidized tartarate ions, as well as products of their partial (radical organic products and CO) and complete (CO2) oxidation. Carboxylate ions and elemental carbon contained in the anodic oxide impart a gray color to the films.

  3. Influence of Feed Speed on the Content of Fine Dust during Cutting of Two-Side-Laminated Particleboards

    Directory of Open Access Journals (Sweden)

    Luďka Hlásková

    2016-03-01

    Full Text Available This paper deals with the problems of wood dust production during the sawing of two-side-laminated particleboards. It points out the dangerous impact of wood dust particles on people´s health and other unfavourable influences in the working environment. The aim of the paper was to introduce the research of dustiness, to determine the content of fine particles in sawdust and analyse the influence of feed rate on the granularity of sawdust created in the process of sawing two-side-laminated particleboards using modern circular saw. Sawing parameters were chosen for the optimal cutting speed of the circular-saw blade Pilana TFZL, vc = 84.3 m·s-1 and for three feed rates of a workpiece with the cut vf = 10, 15, 20 m·min-1. The collected sawdust particles were subjected to the particle-size analysis under exactly defined conditions by sieving and the basic granulometric analysis was made. Sieve analysis gives only a general particle-size distribution without any information considering the mass concentration of fine fraction of dust. Therefore, laser particle sizer Analysette 22 Microtec Plus was used to specify details concerning the size of dust particles smaller than 63 μm, which were collected in the bottom collector.

  4. Preliminary Study on Heavy Metal Pollution Status of Farmland Soil at Two Sides of Cheng-Guan Expressway

    Institute of Scientific and Technical Information of China (English)

    Dongli; DUAN; Shuangyan; WANG; Zumin; ZHANG; Zhouping; YANG; Hua; ZHEN

    2013-01-01

    The heavy metal content of the farmland soil at two sides of Cheng-Guan Expressway is measured to make a preliminary evaluation on its heavy metal pollution status.After digestion and volume fixation of the soil samples collected,measure the Cu,Zn,Cd,Pb and Cr content with atomic absorption spectrophotometry and evaluate the measured data according to Level Two of National Soil Environmental Quality Standard to obtain the contamination status.Cu,Zn and Cd content of the farmland soil for sections of Cheng-Guan Expressway goes beyond Level Two of National Soil Environmental Quality Standard,while the Pb and Cr content meets Level Two of National Soil Environmental Quality Standard.Pb and Cr content of the farmland soil at two sides of Cheng-Guan Expressway is in safe state,while the Cu,Zn and Cd content is in a mild contamination state.Cu,Zn and Cd are the main pollution elements.

  5. Determinants of effective tax rates for firms listed on Chinese stock market: Panel models with two-sided censors

    Directory of Open Access Journals (Sweden)

    Yong-Ching Chiou

    2014-10-01

    Full Text Available This paper is to investigate the determinants effective tax rate for the firms listed on China’s stock markets. The panel data consists of 481 firms from 2007 to 2009 as our empirical data. In order to illustrate a country’s tax policies on firms’ real tax burdens, the dependent variable, ETR, is left-censored at 0 and right-censored at 1, the estimation for panel data model with two-sided censoring suggested by Alan, Honor´e, and Leth-Petersen (2014 is implemented in this paper. There are two important findings are obtained: first, this model can add more observations especially the observations with tax preferences. Second, theories suggest that ETR reflects outcomes of tax preference and this paper is the first time to consider the effective tax rates set between 0 and 1 and this range is more meaningful for the ETRs.

  6. Two sides of one coin: massive hepatic necrosis and progenitor cell-mediated regeneration in acute liver failure.

    Science.gov (United States)

    Weng, Hong-Lei; Cai, Xiaobo; Yuan, Xiaodong; Liebe, Roman; Dooley, Steven; Li, Hai; Wang, Tai-Ling

    2015-01-01

    Massive hepatic necrosis is a key event underlying acute liver failure, a serious clinical syndrome with high mortality. Massive hepatic necrosis in acute liver failure has unique pathophysiological characteristics including extremely rapid parenchymal cell death and removal. On the other hand, massive necrosis rapidly induces the activation of liver progenitor cells, the so-called "second pathway of liver regeneration." The final clinical outcome of acute liver failure depends on whether liver progenitor cell-mediated regeneration can efficiently restore parenchymal mass and function within a short time. This review summarizes the current knowledge regarding massive hepatic necrosis and liver progenitor cell-mediated regeneration in patients with acute liver failure, the two sides of one coin.

  7. Two-sided reflected Markov-modulated Brownian motion with applications to fluid queues and dividend payouts

    CERN Document Server

    D'Auria, Bernardo

    2011-01-01

    In this paper we study a reflected Markov-modulated Brownian motion with a two sided reflection in which the drift, diffusion coefficient and the two boundaries are (jointly) modulated by a finite state space irreducible continuous time Markov chain. The goal is to compute the stationary distribution of this Markov process, which in addition to the complication of having a stochastic boundary can also include jumps at state change epochs of the underlying Markov chain because of the boundary changes. We give the general theory and then specialize to the case where the underlying Markov chain has two states. Moreover, motivated by an application of optimal dividend strategies, we consider the case where the lower barrier is zero and the upper barrier is subject to control. In this case we generalized earlier results from the case of a reflected Brownian motion to the Markov modulated case.

  8. First 3 mm-VLBI imaging of the two-sided jet in Cygnus A. Zooming into the launching region

    CERN Document Server

    Boccardi, B; Bach, U; Bremer, M; Zensus, J A

    2016-01-01

    We present for the first time Very-Long-Baseline Interferometry images of the radio galaxy Cygnus A at the frequency of $86$ $\\rm GHz$. Thanks to the high spatial resolution of only ${\\sim}200$ Schwarzschild radii ($R_{\\bf S}$), such observations provide an extremely detailed view of the nuclear regions in this archetypal object and allow us to derive important constraints for theoretical models describing the launching of relativistic jets. A pixel-based analysis of the jet outflow, which still appears two-sided on the scales probed, was performed. By fitting Gaussian functions to the transverse intensity profiles, we could determine the jet width in the nuclear region. The base of the jets appears wide. The minimum measured transverse width of ${\\sim} (227\\pm98)$ $R_{\\bf S}$ is significantly larger than the radius of the Innermost Stable Circular Orbit, suggesting that the outer accretion disk is contributing to the jet launching. The existence of a faster and Doppler de-boosted inner section, powered eithe...

  9. Evasion and Immuno-Endocrine Regulation in Parasite Infection: Two Sides of the Same Coin in Chagas Disease?

    Science.gov (United States)

    Morrot, Alexandre; Villar, Silvina R.; González, Florencia B.; Pérez, Ana R.

    2016-01-01

    Chagas disease is a serious illness caused by the protozoan parasite Trypanosoma cruzi. Nearly 30% of chronically infected people develop cardiac, digestive, or mixed alterations, suggesting a broad range of host-parasite interactions that finally impact upon chronic disease outcome. The ability of T. cruzi to persist and cause pathology seems to depend on diverse factors like T. cruzi strains, the infective load and the route of infection, presence of virulence factors, the parasite capacity to avoid protective immune response, the strength and type of host defense mechanisms and the genetic background of the host. The host-parasite interaction is subject to a constant neuro-endocrine regulation that is thought to influence the adaptive immune system, and as the infection proceeds it can lead to a broad range of outcomes, ranging from pathogen elimination to its continued persistence in the host. In this context, T. cruzi evasion strategies and host defense mechanisms can be envisioned as two sides of the same coin, influencing parasite persistence and different outcomes observed in Chagas disease. Understanding how T. cruzi evade host's innate and adaptive immune response will provide important clues to better dissect mechanisms underlying the pathophysiology of Chagas disease. PMID:27242726

  10. Coupling Motion and Energy Harvesting of Two Side-by-Side Flexible Plates in a 3D Uniform Flow

    Directory of Open Access Journals (Sweden)

    Dibo Dong

    2016-05-01

    Full Text Available The fluid-structure interaction problems of two side-by-side flexible plates with a finite aspect ratio in a three-dimensional (3D uniform flow are numerically studied. The plates’ motions are entirely passive under the force of surrounding fluid. By changing the aspect ratio and transverse distance, the coupling motions, drag force and energy capture performance are analyzed. The mechanisms underlying the plates’ motion and flow characteristics are discussed systematically. The adopted algorithm is verified and validated by the simulation of flow past a square flexible plate. The results show that the plate’s passive flapping behavior contains transverse and spanwise deformation, and the flapping amplitude is proportional to the aspect ratio. In the side-by-side configuration, three distinct coupling modes of the plates’ motion are identified, including single-plate mode, symmetrical flapping mode and decoupled mode. The plate with a lower aspect ratio may suffer less drag force and capture less bending energy than in the isolated situation. The optimized selection for obtaining higher energy conversion efficiency is the plate flapping in single-plate mode, especially the plate with a higher aspect ratio. The findings of this work provide several new physical insights into the understanding of fish schooling and are expected to inspire the developments of underwater robots or energy harvesters.

  11. Matching Matters!

    CERN Document Server

    Freitas, Ayres; Plehn, Tilman

    2016-01-01

    Effective Lagrangians are a useful tool for a data-driven approach to physics beyond the Standard Model at the LHC. However, for the new physics scales accessible at the LHC, the effective operator expansion is only relatively slowly converging at best. For tree-level processes, it has been found that the agreement between the effective Lagrangian and a range of UV-complete models depends sensitively on the appropriate definition of the matching. We extend this analysis to the one-loop level, which is relevant for electroweak precision data and Higgs decay to photons. We show that near the scale of electroweak symmetry breaking the validity of the effective theory description can be systematically improved through an appropriate matching procedure. In particular, we find a significant increase in accuracy when including suitable terms suppressed by the Higgs vacuum expectation value in the matching.

  12. Two side liquid-cooled and passively Q-switched disk oscillator with nanosheets in flowing CCl4

    Science.gov (United States)

    Nie, Rongzhi; She, Jiangbo; Li, Dongdong; Li, Fuli; Peng, Bo

    2016-09-01

    A passively Q-switched and two side liquid-cooled Nd:YAG disk oscillator is demonstrated, which is operated at a pump pulse width of 300 μs and a pump repetition rate of 10 Hz. The coolant flows over the two large surfaces of the disk and will be passed through by laser beam, so it can also serve as a saturable absorber. For the unmodulated laser, the pure CCl4 was employed as coolant and a plane output mirror of 15 % transmission was employed. The maximum output energy of 795 mJ is realized corresponding to the optical-optical efficiency of 27.4 % and the slope efficiency of 30 %; for the graphene Q-switched laser, the CCl4 with graphene nanosheets was employed as coolant and a plane output mirror of 40 % transmission was employed. The maximum output energy of 376 mJ is realized corresponding to the optical-optical efficiency of 13 % and the slope efficiency of 18 %. The maximum average Q-switching repetition rate is 385 kHz, and the minimum average pulse width is 116 ns; for the MoS2 Q-switched laser, the CCl4 with MoS2 nanosheets was employed as coolant and a plane output mirror of 30 % transmission was employed. The maximum output energy of 486 mJ is realized corresponding to the optical-optical efficiency of 17 % and the slope efficiency of 22 %.The maximum average Q-switching repetition rate is 470 kHz, and the minimum average pulse width is 137 ns.

  13. Truecluster matching

    CERN Document Server

    Oehlschlägel, Jens

    2007-01-01

    Cluster matching by permuting cluster labels is important in many clustering contexts such as cluster validation and cluster ensemble techniques. The classic approach is to minimize the euclidean distance between two cluster solutions which induces inappropriate stability in certain settings. Therefore, we present the truematch algorithm that introduces two improvements best explained in the crisp case. First, instead of maximizing the trace of the cluster crosstable, we propose to maximize a chi-square transformation of this crosstable. Thus, the trace will not be dominated by the cells with the largest counts but by the cells with the most non-random observations, taking into account the marginals. Second, we suggest a probabilistic component in order to break ties and to make the matching algorithm truly random on random data. The truematch algorithm is designed as a building block of the truecluster framework and scales in polynomial time. First simulation results confirm that the truematch algorithm give...

  14. "Living in sin" and marriage : A matching model

    NARCIS (Netherlands)

    Sahib, PR; Gu, XH

    2002-01-01

    This paper develops a two sided matching model of premarital cohabitation and marriage in which premarital cohabitation serves as a period of learning. We solve for the optimal policy to be followed by individuals by treating the model as a three stage dynamic programming problem. We find that coupl

  15. "Living in sin" and marriage : a matching model

    NARCIS (Netherlands)

    Rao Sahib, P. Padma; Gu, X. Xinhua

    1999-01-01

    This paper develops a two sided matching model of premarital cohabitation and marriage in which premarital cohabitation serves as a period of learning. We solve for the optimal policy to be followed by individuals by treating the model as a three stage dynamic programming problem. We find that coupl

  16. "Living in sin" and marriage : A matching model

    NARCIS (Netherlands)

    Sahib, PR; Gu, XH

    This paper develops a two sided matching model of premarital cohabitation and marriage in which premarital cohabitation serves as a period of learning. We solve for the optimal policy to be followed by individuals by treating the model as a three stage dynamic programming problem. We find that

  17. "Living in sin" and marriage : a matching model

    NARCIS (Netherlands)

    Rao Sahib, P. Padma; Gu, X. Xinhua

    1999-01-01

    This paper develops a two sided matching model of premarital cohabitation and marriage in which premarital cohabitation serves as a period of learning. We solve for the optimal policy to be followed by individuals by treating the model as a three stage dynamic programming problem. We find that

  18. Minkowski spacetime and Lorentz invariance: The cart and the horse or two sides of a single coin?

    Science.gov (United States)

    Acuña, Pablo

    2016-08-01

    unnecessary, and that it actually obscures our understanding of the explanatory nature and power of the theory.Second, I argue that rather than a debate about what is the cart and what is the horse, the discussion between Brown and Janssen is an instance of the dispute about what was first, the egg or the chicken. I claim that Minkowski structure and Lorentz invariance need not be conceived in such a way that one must explain the other. Instead, they are better understood as the two sides of a single coin: the arrow between them is not explanatory, but analytic (in a sense that I explain below). Furthermore, I argue that this conception of the link between Lorentz invariance and Minkowski chronogeometry, unlike the conception that motivates the Janssen-Brown debate, sheds light on our understanding of the explanatory nature and power of special relativity. I claim that the aforementioned analytic connection between Minkowski structure and Lorentz grounds the explanatory foundations of Einstein's theory.The structure of this article is the following. In Section 2, I provide an overview of the debate, paying special attention to the aspects that are most relevant for my critical assessment. In Section 3, I underscore two crucial assumptions endorsed by Brown and Janssen-that the discussion is independent of questions about spacetime ontology, and that the arrow of explanation at stake must be constructive-and I ponder about the justification that the authors offer (and implicitly assume) for them. In Section 4, I show that both these assumptions are problematic and unjustified, thus tainting the whole debate. In Section 5, I argue that Minkowski structure and Lorentz invariance are analytically linked, and that this link-that is not itself explanatory-clarifies the source of the chronogeometric explanations of physical phenomena that special relativity provides. In Section 6, I conclude and value the lessons that we can draw from Janssen's and Brown's arguments in the light of

  19. Overall fluctuations and fat tails in an artificial financial market: The two-sided impact of leveraged trading

    Science.gov (United States)

    Yang, G.; Zhu, C. G.; An, K. N.; Huang, J. P.

    2015-09-01

    Recent years have seen leveraged trading playing an increasingly important role in financial markets. However, the effect of leverage on the markets is still an open question. Here, we introduce a framework to investigate leveraged trading through both agent-based simulations and controlled human experiments on a one-stock artificial market. It shows that leverage increases the market risks, and at the same time decreases the outbreak probabilities of financial bubbles or crises. This work helps to understand the impact of leverage on financial markets appropriately.

  20. 双边市场中平台企业兼容策略选择研究%Research on Compatibility Strategy of Platforms in Two-sided Markets

    Institute of Scientific and Technical Information of China (English)

    刘大为; 李凯

    2011-01-01

    为了研究双边市场中平台企业的兼容策略选择,构建了反映不同兼容策略的双边市场模型.假设一个垄断者同时拥有两个存在横向差异的平台,运用两阶段博弈的思想分析了平台两边用户的兼容策略选择,发现两边都希望平台是完全兼容的;进而分析了平台企业的兼容策略选择,发现如果没有新用户的进入,平台之间的任何兼容策略都是无差异的,但如果存在新用户的进入,则完全兼容是垄断者的最优策略选择.%To analysis the compatibility strategy of platforms in two-sided markets, we introduce a two-sided market model which involves various compatibility regimes.We suppose there is a monopolist operating two platforms with horizontal differentiation.The whole situation is modeled as a two-stage game.Firstly we analyze the compatibility mode of two-type agents and find that both of them prefer full compatibility regimes.Then we analyze the compatibility mode of platforms owner and find that the monopolist' s profit is independent of the compatibility ' regime if there is no entry to the market, but if there is some new agent the monopolist' s best regime is also full compatibility.

  1. Roads may act as barriers to flying insects: species composition of bees and wasps differs on two sides of a large highway

    Directory of Open Access Journals (Sweden)

    Petter Andersson

    2017-07-01

    Full Text Available Roads may act as barriers to animal movements, but direct barrier effects on insects have rarely been studied. In this study we collected data on bees and wasps along two sides of a large road in Sweden using yellow pan traps. We then analyzed if the species composition differed between the two sides of the road; first for the whole community, and then only for the smallest species (which typically are poorer dispersers. As a complement, we analyzed if different vegetation variables differed between the two sides of the road, as this may also affect differences in species composition. Finally, we analyzed if species richness and abundance in general differed between the two sides and how these two response variables were explained by the vegetation variables. There was a significant difference in species composition between the eastern and the western side of the road when analyzing the whole community, and this relationship became even stronger when the largest species were excluded. The vegetation variables did not strongly differ between the two sides, and there was no difference in species richness and abundance of bees and wasps either. Abundance was, however, explained by the number of flowering plants in the surroundings of the trap. Even though using a rather limited data set, our results indicate that large roads may act as barriers on the movement of bees and wasps, especially for small species with poor dispersal ability. On the other hand, road verges may be important habitat for many species, which leads to a potential conflict that is important to consider in the planning of green infrastructure.

  2. MATCHING IN INFORMAL FINANCIAL INSTITUTIONS.

    Science.gov (United States)

    Eeckhout, Jan; Munshi, Kaivan

    2010-09-01

    This paper analyzes an informal financial institution that brings heterogeneous agents together in groups. We analyze decentralized matching into these groups, and the equilibrium composition of participants that consequently arises. We find that participants sort remarkably well across the competing groups, and that they re-sort immediately following an unexpected exogenous regulatory change. These findings suggest that the competitive matching model might have applicability and bite in other settings where matching is an important equilibrium phenomenon. (JEL: O12, O17, G20, D40).

  3. Absolute Pitch and Synesthesia: Two Sides of the Same Coin? Shared and Distinct Neural Substrates of Music Listening

    Science.gov (United States)

    Loui, Psyche; Zamm, Anna; Schlaug, Gottfried

    2013-01-01

    People with Absolute Pitch can categorize musical pitches without a reference, whereas people with tone-color synesthesia can see colors when hearing music. Both of these special populations perceive music in an above-normal manner. In this study we asked whether AP possessors and tone-color synesthetes might recruit specialized neural mechanisms during music listening. Furthermore, we tested the degree to which neural substrates recruited for music listening may be shared between these special populations. AP possessors, tone-color synesthetes, and matched controls rated the perceived arousal levels of musical excerpts in a sparse-sampled fMRI study. Both APs and synesthetes showed enhanced superior temporal gyrus (STG, secondary auditory cortex) activation relative to controls during music listening, with left-lateralized enhancement in the APs and right-lateralized enhancement in the synesthetes. When listening to highly arousing excerpts, AP possessors showed additional activation in the left STG whereas synesthetes showed enhanced activity in the bilateral lingual gyrus and inferior temporal gyrus (late visual areas). Results support both shared and distinct neural enhancements in AP and synesthesia: common enhancements in early cortical mechanisms of perceptual analysis, followed by relative specialization in later association and categorization processes that support the unique behaviors of these special populations during music listening. PMID:23508195

  4. The two sides of sensory-cognitive interactions: effects of age, hearing acuity, and working memory span on sentence comprehension

    Directory of Open Access Journals (Sweden)

    Renee eDeCaro

    2016-02-01

    Full Text Available Reduced hearing acuity is among the most prevalent of chronic medical conditions among older adults. An experiment is reported in which comprehension of spoken sentences was tested for older adults with good hearing acuity or with a mild-to-moderate hearing loss, and young adults with age-normal hearing. Comprehension was measured by participants’ ability to determine of the agent of an action in sentences that expressed this relation with a syntactically less complex subject-relative construction or a syntactically more complex object-relative construction. Agency determination was further challenged by inserting a prepositional phrase into sentences between the person performing an action and the action being performed. As a control, prepositional phrases of equivalent length were also inserted into sentences in a non-disruptive position. Effects on sentence comprehension of age, hearing acuity, prepositional phrase placement and sound level of stimulus presentations appeared only for comprehension of sentences with the more syntactically complex object-relative structures. Working memory as tested by reading span scores accounted for a significant amount of the variance in comprehension accuracy. Once working memory capacity and hearing acuity were taken into account, chronological age among the older adults contributed no further variance to comprehension accuracy. Results are discussed in terms of the positive and negative effects of sensory-cognitive interactions in comprehension of spoken sentences and lend support to a framework in which domain-general executive resources, notably verbal working memory, play a role in both linguistic and perceptual processing.

  5. Technology Licensing in Two-Sided Markets%双边市场条件下的技术许可策略研究

    Institute of Scientific and Technical Information of China (English)

    王怀祖; 熊中楷; 黄俊

    2011-01-01

    Two-sided markets include a system platform and two groups of clients who interact with each other via two-sided network externalities-the expansion of one market can increase customers' utilities in the other market. Technology licensing decisions are important in the network economy because two-sided network externalities are prevalent. The purpose of the paper is to investigate innovators' optimal technology licensing strategies under two-sided markets.We assume that an innovator has major patented technologies that are manufactured for Product I market, but licensed in Product II market. The scenario shows that two-sided network externalities between the two markets exist. We explore how factors, such as the intensity of two-sided network externalities, the number of potential licensees and the potential demand effect, can influence the technology licensing strategies of innovators. We establish a two-stage game model and adopt the fulfilled expectation equilibrium theory to analyze market equilibrium.First, we discuss the fixed-fee licensing strategy and analyze the optimal number of licenses for an innovator. We find that an innovator will not restrict the number of licenses in the licensed product market when the following conditions exist: strong two-sided network externalities, small potential licensee numbers, and relatively small potential demand scale in the licensed product market. Without the presence of these conditions, an innovator will restrict the number of licensees. Second, we discuss the royalty licensing strategy. We find that the innovator will decrease the royalty rate when two-sided network externalities and the potential number of licensees increase, and when the potential demand in the licensed product market decreases. Third, we discuss the probability of technological subsidies provided by innovators. An innovator may subsidize licensees with negative royalty rates. Furthermore, an innovator' s subsidizing strategy may promote

  6. Two Sides of the Same Coin? Analysis of the Web-Based Social Media with Regard to the Image of the Agri-Food Sector in Germany

    Directory of Open Access Journals (Sweden)

    Justus Boehm

    2010-10-01

    Full Text Available  Never before has food been as safe and secure as it is today, but simultaneously, society has become increasingly critical towards agricultural and food related issues. This two-sided development between society and agribusiness will be analyzed using Framing Theory. A quantitative semantic analysis was applied to evaluate the web-based social media in Germany. 50,931 web posts were collected covering 21 issues identified as relevant for the agri-food sector. The results show that all contentious issues are mainly framed in a two-sided way. The modern productivity-driven industry is judged as a negative development, trends returning to a more natural food production are seen as positive.

  7. 双边市场中的搭售:问题与规制思路%Tying in Two-sided Markets:Problems and Regulations

    Institute of Scientific and Technical Information of China (English)

    王少南

    2016-01-01

    The unique market structure and operating mechanism of two-sided markets place great challenges on traditional ty-ing theories based on unilateral markets. It calls for a rational analysis to the tying subject’ s dominant market position and behav-ior characteristics, in terms of crossing network effects, non-neutral price structures, the mutual dependence and complementar-ity of platform products in two-sided markets. The key to regulating tying in two-sided markets by means of anti-monopoly laws is to take full account of both positive and negative competition effects. It is critically important that China take full advanta-ges of two-sided markets for technological innovation in the anti-monopoly legal practice, and to upgrade industrial develop-ment and promote consumer welfare by means of protecting innovation.%双边市场特有的结构和运行机制对基于传统单边市场的搭售理论提出了全新的挑战。应该围绕双边市场的交叉网络效应、非中性的价格结构及平台产品的相互依赖性和互补性等特征,理性分析搭售行为的主体市场支配地位和具体行为特征。反垄断法规制双边市场中的搭售行为的关键在于综合考量其积极的竞争效果和消极的竞争效果。我国在反垄断法实践中应充分注重双边市场在技术创新方面的突出优势,通过保护创新来促进产业发展和提升消费者福利。

  8. Filtering With Two Sided Filtrations

    Science.gov (United States)

    1990-01-01

    anid (4.12) must be the same. Equating the bounded variation terms we have -i = H(At(h(x,) + (t))) - 17(At)(Ifh(xt) + IfH(t)). (4.13) Similarly, forming...TRATIONS 535 Again, the decompositions (4.11) and (4.14) must be the same, so equating their bounded variation terms we see =H(Ait((t) - h(xj_,))) + fl...h (1 - 2t) -(B1 -B_) so dividing by h > 0 and letting h -+ 0 we see at = (-2t)(1 - 2t) Furthermore, because the quadratic variation of bounded

  9. Two-sided bounds on the mean vector and covariance matrix in linear stochastically excited vibration systems with application of the differential calculus of norms

    Directory of Open Access Journals (Sweden)

    Ludwig Kohaupt

    2015-12-01

    Full Text Available For a linear stochastic vibration model in state-space form, $ \\dot{x}(t = A x(t+b(t, \\, x(0=x_0, $ with system matrix A and white noise excitation $ b(t $, under certain conditions, the solution $ x(t $ is a random vector that can be completely described by its mean vector, $ m_x(t:=m_{x(t} $, and its covariance matrix, $ P_x(t:=P_{x(t} $. If matrix $ A $ is asymptotically stable, then $ m_x(t \\rightarrow 0 \\, (t \\rightarrow \\infty $ and $ P_x(t \\rightarrow P \\, (t \\rightarrow \\infty $, where $ P $ is a positive (semi-definite matrix. As the main new points, in this paper, we derive two-sided bounds on $ \\Vert m_x(t\\Vert _2 $ and $ \\Vert P_x(t- P\\Vert _2 $ as well as formulas for the right norm derivatives $ D_+^k \\Vert P_x(t- P\\Vert _2, \\, k=0,1,2 $, and apply these results to the computation of the best constants in the two-sided bounds. The obtained results are of special interest to applied mathematicians and engineers.

  10. Research on Pricing Strategy of Online Group Buying in Two-sided Network%双边网络环境下的网络团购定价策略研究

    Institute of Scientific and Technical Information of China (English)

    唐方成; 池坤鹏

    2013-01-01

    Online group buying is a business model characterized with two-sided market.The challenging problems that group buying firms face are how to meet the needs of consumers and suppliers and how to develop the right bilateral price structure and pricing level.According to the nature of two-sided markets group purchase site,this paper constructs the pricing models by considering multi-homing of consumers and suppliers.Furthermore,the pricing models under the monopoly pattern and competition equilibrium are presented.This study investigates the effect of some key factors of platform fixed cost,search matching,degree of service differentiation and cross-group network effects change on pricing mechanism.Finally,a case study of Lashou is employed to test the proposed pricing mechanism and tactics.%网络团购是一种典型的具有双边市场特征的商业模式,如何满足消费者和商户的需求,合理制定双边价格结构和定价水平已成为团购网站运营企业面临的挑战性问题.本文应用双边市场理论,构建了网络团购双边客户多归属条件下的定价模型,分析了垄断模式和竞争均衡状态下的定价机制,并讨论了网站固定成本、搜索匹配度、服务差异化程度以及交叉网络效应等关键因素变化对网络团购平台企业定价策略的影响.最后,通过拉手网的案例分析佐证了文中提出的定价机制与策略.

  11. MILP model for integrated balancing and sequencing mixed-model two-sided assembly line with variable launching interval and assignment restrictions

    Science.gov (United States)

    Azmi, N. I. L. Mohd; Ahmad, R.; Zainuddin, Z. M.

    2017-09-01

    This research explores the Mixed-Model Two-Sided Assembly Line (MMTSAL). There are two interrelated problems in MMTSAL which are line balancing and model sequencing. In previous studies, many researchers considered these problems separately and only few studied them simultaneously for one-sided line. However in this study, these two problems are solved simultaneously to obtain more efficient solution. The Mixed Integer Linear Programming (MILP) model with objectives of minimizing total utility work and idle time is generated by considering variable launching interval and assignment restriction constraint. The problem is analysed using small-size test cases to validate the integrated model. Throughout this paper, numerical experiment was conducted by using General Algebraic Modelling System (GAMS) with the solver CPLEX. Experimental results indicate that integrating the problems of model sequencing and line balancing help to minimise the proposed objectives function.

  12. Accounting for Endogeneity in Matching Function Estimation

    DEFF Research Database (Denmark)

    Borowczyk-Martins, Daniel; Jolivet, Grégory; Postel-Vinay, Fabien

    2017-01-01

    We show that equilibrium matching models imply that standard estimates of the matching function elasticities are exposed to an endogeneity bias, which arises from the search behavior of agents on either side of the market. We offer an estimation method which, under certain structural assumptions...... about the process driving shocks to matching efficiency, is immune from that bias. Application of our method to the estimation of a basic version of the matching function using aggregate U.S. data from the Job Openings and Labor Turnover Survey (JOLTS) suggests that the bias can be quantitatively...

  13. Platform strategy in vertically differentiated two-sided markets%纵向差异化双边市场中平台策略

    Institute of Scientific and Technical Information of China (English)

    万兴; 高觉民

    2013-01-01

    基于抽象函数建立了纵向差异化双边市场的一般模型,并利用一般模型讨论了垄断与双寡头情形下的市场均衡特征以及在双寡头情形下价格变动的战略效应.进一步在均匀分布的假设下分析了网络外部性参数与质量差距变量对市场均衡时价格与利润的影响.研究发现,在一般模型中,垄断平台能够比双寡头平台更加有效地协调两边的价格结构;双寡头平台的竞争呈现强者更强的效应;双寡头平台竞争中价格具有战略互补效应,而下游市场的战略互补效应要高于上游市场的战略互补效应.基于均匀分布假设可以得到,低质量平台宜采取“分而治之”的策略,高质量平台则宜“因时而动”.%A general-purpose model associated with vertically differentiated two-sided markets is established based on an function. Using the general-purpose model, the paper discusses the features of market equilibriums in both a monopoly and a duopoly markets, and explores strategic effects of price change in the duopoly market. The paper further studies the impact of the parameters of network externality and the variable of quality gap on equilibrium prices and profits under the assumption of uniform distribution of consumer preference. The following conclusions are obtained by using the general-purpose model. Firstly, a monopoly platform can coordinate the price structure of the two sides more effectively than duopoly platforms. Secondly, a positive feedback exists in competition between duopoly platforms. Thirdly, prices have strategic complementary effect in duopoly competition, and this effect is stronger on the downstream side than on the upstream side. Under the assumption of uniform distribution, the paper finds that the low-quality platform should take the strategy of "divide and conquer", while the high-quality platform should exert the strategy of "act according to circumstances".

  14. Statistics of polarisation matching

    NARCIS (Netherlands)

    Naus, H.W.L.; Zwamborn, A.P.M.

    2014-01-01

    The reception of electromagnetic signals depends on the polarisation matching of the transmitting and receiving antenna. The practical matching differs from the theoretical one because of the noise deterioration of the transmitted and eventually received electromagnetic field. In other applications,

  15. Numerical Study of Mixed Convection of the Nanofluids in Two-Sided Lid-Driven Square Cavity with a Pair of Triangular Heating Cylinders

    Directory of Open Access Journals (Sweden)

    Zoubair Boulahia

    2016-01-01

    Full Text Available A numerical study is carried out concerning mixed convection of the nanofluid in two-sided lid-driven square cavity with a pair of triangular heat sources. The upper and bottom moving walls are thermally insulated while the left and right walls are cooled at constant temperature. Two-dimensional Navier-Stokes and energy equations are solved using the finite volume discretization method with SIMPLE algorithm. The method used is validated against previous works. Two cases were considered depending on the direction of moving walls. Effects of various design parameters such as Richardson number (0.1≤Ri≤100, nanoparticle volume fraction (0≤φ≤0.05, and size (25 nm≤dp≤145 nm and type (Cu,Al2O3,TiO2 of nanoparticles on the heat transfer rate are investigated. The results of this investigation illustrate that, by reducing the diameter of the nanoparticles and Ri, the heat transfer rate increases. Moreover, it is found that by changing horizontal direction of the moving walls the heat transfer rate variation is negligible.

  16. Topological analysis of the periodic structures in a harmonically driven bubble oscillator near Blake's critical threshold: Infinite sequence of two-sided Farey ordering trees

    Energy Technology Data Exchange (ETDEWEB)

    Hegedűs, Ferenc, E-mail: hegedusf@hds.bme.hu

    2016-03-06

    The topology of the stable periodic orbits of a harmonically driven bubble oscillator, the Rayleigh–Plesset equation, in the space of the excitation parameters (pressure amplitude and frequency) has been revealed numerically. This topology is governed by a hierarchy of two-sided Farey trees initiated from a unique primary structure defined also by a simple asymmetric Farey tree. The sub-topology of each of these building blocks is driven by a homoclinic tangency of a periodic saddle. This self-similar organisation is a suitable basis for a general description, since it is in good agreement with partial results obtained in other periodically forced oscillators and iterated maps. The applied ambient pressure in the model is near but still below Blake's critical threshold. Therefore, this paper is also a straightforward continuation of the work of Hegedűs [1], who first found numerical evidence for the existence of stable, period 1 solutions beyond Blake's threshold. The present findings are crucial for the extension of the available numerical results from period 1 to arbitrary periodicity. - Highlights: • Spherical gas/vapour bubble in water has been examined numerically. • The bubble model was the Rayleigh–Plesset equation excited harmonically. • Topology of stable periodic solutions has been found near Blake's threshold.

  17. Hierarchical model of matching

    Science.gov (United States)

    Pedrycz, Witold; Roventa, Eugene

    1992-01-01

    The issue of matching two fuzzy sets becomes an essential design aspect of many algorithms including fuzzy controllers, pattern classifiers, knowledge-based systems, etc. This paper introduces a new model of matching. Its principal features involve the following: (1) matching carried out with respect to the grades of membership of fuzzy sets as well as some functionals defined on them (like energy, entropy,transom); (2) concepts of hierarchies in the matching model leading to a straightforward distinction between 'local' and 'global' levels of matching; and (3) a distributed character of the model realized as a logic-based neural network.

  18. Best matching theory & applications

    CERN Document Server

    Moghaddam, Mohsen

    2017-01-01

    Mismatch or best match? This book demonstrates that best matching of individual entities to each other is essential to ensure smooth conduct and successful competitiveness in any distributed system, natural and artificial. Interactions must be optimized through best matching in planning and scheduling, enterprise network design, transportation and construction planning, recruitment, problem solving, selective assembly, team formation, sensor network design, and more. Fundamentals of best matching in distributed and collaborative systems are explained by providing: § Methodical analysis of various multidimensional best matching processes § Comprehensive taxonomy, comparing different best matching problems and processes § Systematic identification of systems’ hierarchy, nature of interactions, and distribution of decision-making and control functions § Practical formulation of solutions based on a library of best matching algorithms and protocols, ready for direct applications and apps development. Design...

  19. Effectiveness of two-sided UV-C treatments in inhibiting natural microflora and extending the shelf-life of minimally processed 'Red Oak Leaf' lettuce.

    Science.gov (United States)

    Allende, Ana; McEvoy, James L; Luo, Yaguang; Artes, Francisco; Wang, Chien Y

    2006-05-01

    The use of UV-C radiation treatments to inhibit the microbial growth and extend the shelf-life of minimally processed 'Red Oak Leaf' lettuce was investigated. Initially, UV-C resistance of 20 bacterial strains from different genera often associated with fresh produce (Enterobacter, Erwinia, Escherichia, Leuconostoc, Pantoea, Pseudomonas, Rahnela, Salmonella, Serratia and Yersinia) were tested in vitro. Most of the bacterial strains were inhibited with the minimum dose (30 J m(-2)). Erwinia carotovora, Leuconostoc carnosum, Salmonella typhimurium, and Yersinia aldovae were the most resistant strains requiring a UV-C dose of 85 J m(-2) to completely inhibit growth. An in vivo study consisted of treating minimally processed 'Red Oak Leaf' lettuce (Lactuca sativa) with UV-C at three radiation doses (1.18, 2.37 and 7.11 kJ m(-2)) on each side of the leaves and storing the product under passive MAP conditions at 5 degrees C for up to 10 days. The gas composition inside packages varied significantly among the treatments, with CO2 concentrations positively and O2 concentrations negatively correlating with the radiation dose. All the radiation doses were effective in reducing the natural microflora of the product, although the highest doses showed the greatest microbial inhibitions. Taking into account the microbial limit set by Spanish legislation [Boletín Oficial del Estado (BOE), 2001. Normas de higiene para la elaboración, distribución y comercio de comidas preparadas, Madrid, Spain, Real Decreto 3484/2000, pp. 1435-1441], all UV-C treatments extended the shelf-life of the product. However, the 7.11 kJ m(-2) dose induced tissue softening and browning after 7 days of storage at 5 degrees C. Therefore, the use of two sided UV-C radiation, at the proper dose, is effective in reducing the natural microflora and extending the shelf-life of minimally processed 'Red Oak Leaf' lettuce.

  20. 双边多工位装配线平衡问题%Heuristic algorithm of two-sided with multi-parallel stations assembly line balancing

    Institute of Scientific and Technical Information of China (English)

    张宏林; 殷复鹏; 吴爱华

    2013-01-01

    针对装配线上一个位置左右两边各有多个工位的装配线平衡问题建立数学模型,提出一种启发式平衡算法.该算法分为两个阶段,阶段1从未分配的作业元素中找出能够分配给某一位置的作业,构成集合W;阶段2按照不违背作业优先关系、方位约束和工位时间不超过节拍的原则,把W中的部分或全部作业元素分配到该位置内的各工位上;依此循环,直至所有作业元素分配完毕.以某重型汽车装配翻车前的装配线平衡为例,说明了所提算法的有效性.%To study the complex assembly line balancing problem, such as two-sided with multi-stations assembly line balancing problem, a mathematical model based on some assumptions to this problem was set up and a heuristic balancing algorithm was proposed. The algorithm had two phases. Phase one was to find out the operations which could be assigned to one position, corresponding to the constraint conditions in the mathematical model, and set up the set W with them. And phase two was to select and assign operations from W to the right station of the position without violating rules as precedence, position constraint and station time. All operations' assignments were completed based on this cycle. Finally, a truck assembly line balancing problem was provided as example to verify the effectiveness of the algorithm.

  1. Study on Platform Ownership in Two-sided Markets%基于双边市场的平台所有权研究

    Institute of Scientific and Technical Information of China (English)

    王昭慧; 张洪

    2011-01-01

    There are many markets in which two groups of users interact with each other via electronic platforms. These platforms enable markets to have two - sided network externality. These platforms include payment systems, portals, search engines, Internet shops, operating systems, etc. The platform of two-sided markets may be owned by independent third parties, or vertically integrated buyers or suppliers. Different ownerships can lead to differences in platform size, profit distribution and social welfare. It is important to understand different forms of platform ownership structure and their external effects.This paper is to study the impact of different platform ownership arrangements on the market structure in two-sided markets. Two ownership structures and three market structures are examined in this study. The two examined ownership structures are the independent third party-owned platform and the supplier-owned platform. The three examined market structures are monopoly, duopoly with single-homing and multi-homing. This study compares the rankings of market size, consumer surplus, supplier's profit and social welfare for these two ownership structures and three market structures.Our findings show that in the monopoly market structure suppliers are motivated for profit to own platform if the density of suppliers is more than 1.0457. The ownership is not socially preferable and government should intervene in markets. Duopoly market structure has single-homing and multi-homing forms. Three cases were compared with each other: (1) two competing platforms owned by independent third parties, (2) one common platform jointly owned by two different suppliers, (3) one platform owned by an independent third party and the other co-owned by suppliers. Our analysis results show that independent third party ownership is a socially optimal ownership structure. Supplier-ownership should be regulated in order to maximize social welfare. Interactions between two platform ownership

  2. Uncertain Schema Matching

    CERN Document Server

    Gal, Avigdor

    2011-01-01

    Schema matching is the task of providing correspondences between concepts describing the meaning of data in various heterogeneous, distributed data sources. Schema matching is one of the basic operations required by the process of data and schema integration, and thus has a great effect on its outcomes, whether these involve targeted content delivery, view integration, database integration, query rewriting over heterogeneous sources, duplicate data elimination, or automatic streamlining of workflow activities that involve heterogeneous data sources. Although schema matching research has been o

  3. Matchings in hexagonal cacti

    Directory of Open Access Journals (Sweden)

    E. J. Farrell

    1987-01-01

    Full Text Available Explicit recurrences are derived for the matching polynomials of the basic types of hexagonal cacti, the linear cactus and the star cactus and also for an associated graph, called the hexagonal crown. Tables of the polynomials are given for each type of graph. Explicit formulae are then obtained for the number of defect-d matchings in the graphs, for various values of d. In particular, formulae are derived for the number of perfect matchings in all three types of graphs. Finally, results are given for the total number of matchings in the graphs.

  4. Synchronized vortex shedding and sound radiation from two side-by-side rectangular cylinders of different cross-sectional aspect ratios

    Energy Technology Data Exchange (ETDEWEB)

    Octavianty, Ressa, E-mail: ressa-octavianty@ed.tmu.ac.jp; Asai, Masahito, E-mail: masai@tmu.ac.jp [Department of Aerospace Engineering, Tokyo Metropolitan University, 6-6 Asahigaoka, Hino, Tokyo 191-0065 (Japan)

    2015-10-15

    Synchronized vortex shedding from two side-by-side cylinders and the associated sound radiation were examined experimentally at Reynolds numbers of the order of 10{sup 4} in low-Mach-number flows. In addition to a pair of square cylinders, a pair of rectangular cylinders, one with a square cross section (d × d) and the other with a rectangular cross section (d × c) having a cross-sectional aspect ratio (c/d) of 1.2–1.5, was considered. The center-to-center distance between the two cylinders L/d was 3.6, 4.5, and 6.0; these settings were within the non-biased flow regime for side-by-side square cylinders. In case of a square cylinder pair, anti-phase synchronized vortex shedding occurring for L/d = 3.6 and 4.5 generated a quadrupole-like sound source which radiated in-phase, planar-symmetric sound in the far field. Synchronized vortex shedding from the two rectangular cylinders with different c/d also occurred with almost the same frequency as the characteristic frequency of the square-cylinder wake in the case of the small center-to-center distance, L/d = 3.6, for all the cylinder pairs examined. The synchronized sound field was anti-phase and asymmetric in amplitude, unlike the case of a square cylinder pair. For larger spacing L/d = 4.5, synchronized vortex shedding and anti-phase sound still occurred, but only for close cross-sectional aspect ratios (c/d = 1.0 and 1.2), and highly modulated sound was radiated with two different frequencies due to non-synchronized vortex shedding from the two cylinders for larger differences in c/d. It was also found that when synchronized vortex shedding occurred, near-wake velocity fluctuations exhibited high spanwise-coherency, with a very sharp spectral peak compared with the single-cylinder case.

  5. Role of two-sided crosstalk between NO and H2S on improvement of mineral homeostasis and antioxidative defense in Sesamum indicum under lead stress.

    Science.gov (United States)

    Amooaghaie, Rayhaneh; Zangene-Madar, Faezeh; Enteshari, Shekoofeh

    2017-05-01

    H2S and NO are two important gasotransmitters that modulate stress responses in plants. There are the contradictory data on crosstalk between NO and H2S in the studies. Hence, in the present study, the role of interplay between NO and H2S was assessed on the Pb tolerance of Sesamum indicum using pharmacological and biochemical approaches. Results revealed that Pb stress reduced the plant growth and the content of photosynthetic pigments and Fv/Fm ratio, increased the lipid peroxidation and the H2O2 content, elevated the endogenous contents of nitric oxide (NO), H2S and enhanced the activities of antioxidant enzymes (except APX). Additionally, concentrations of most mineral ions (K, P, Mg, Fe, Mn and Zn) in both shoots and roots decreased. Pb accumulation in roots was more than it in shoots. Both sodium hydrosulfide (NaHS as a donor of H2S) and sodium nitroprusside (SNP as an NO donor) improved the plant growth, the chlorophyll and carotenoid contents and PSII efficiency, reduced oxidative damage, increased the activities of antioxidant enzymes and reduced the proline content in Pb-stressed plants. Furthermore, both NaHS and SNP significantly restricted the uptake and translocation of Pb, thereby minimizing antagonistic effects of Pb on essential mineral contents in sesame plants. NaHS increased the NO generation and many NaHS-induced responses were completely reversed by cPTIO, as the specific NO scavenger. Applying SNP also enhanced H2S release levels in roots of Pb-stressed plants and only some NO-driven effects were partially weakened by hypotuarine (HT), as the scavenger of H2S.These findings proposed for the first time that two-sided interplay between H2S and NO might confer an increased tolerance to Pb stress via activating the antioxidant systems, reducing the uptake and translocation of Pb, and harmonizing the balance of mineral nutrient. Copyright © 2017 Elsevier Inc. All rights reserved.

  6. Research on Network Group-buying Platform Pricing Model Based on Two-sided Market%基于双边市场的网络团购平台定价模型研究

    Institute of Scientific and Technical Information of China (English)

    白莹; 李明杰; 袁冲; 邓舒; 胡春

    2012-01-01

    双边市场理论是近年来产业组织研究的热点问题,结合网络团购平台特点,可以推导出适合网络团购平台的定价模型,讨论交叉网络外部性、差异化程度、卖方信誉及平台搜索匹配度对网络团购平台定价的影响。结论表明,平台需要对网络外部性较强、信誉较高且差异化程度较小的一方收取较低的交易费甚至免费,相反则抽取较高佣金,同时提高平台的搜索匹配概率将对企业利润产生显著的正向影响。网络团购平台需通过不断提高差异化程度和卖方信誉等方式,来吸引更多用户并达成更多交易量,从而使团购企业真正获得盈利。%In recent years,two-sided market theory has been a hot spot in the field of industrial organization.Combining with the characteristics of network group-buying platform,a pricing model suitable for the network group-buying platform is established,and the impacts of crossover network externalities,differentiation degree,the sellers' reputation and search efficiency are discussed.The conclusions show that platform needs to charge lower fee or even be free on the side which has stronger network externalities,higher reputation and differentiation degree,and on the contrary charges higher commissions.At the same time,improving the search matching probability will have a significantly positive impact on the corporate profit.Network group-buying platform needs to attract more users and achieve more deals to make the enterprise gain profit by means of improving differentiation degree,sellers' credit and so on.

  7. Ontology Matching Across Domains

    Science.gov (United States)

    2010-05-01

    matching include GMO [1], Anchor-Prompt [2], and Similarity Flooding [3]. GMO is an iterative structural matcher, which uses RDF bipartite graphs to...AFRL under contract# FA8750-09-C-0058. References [1] Hu, W., Jian, N., Qu, Y., Wang, Y., “ GMO : a graph matching for ontologies”, in: Proceedings of

  8. Learning Graph Matching

    CERN Document Server

    Caetano, Tiberio S; Cheng, Li; Le, Quoc V; Smola, Alex J

    2008-01-01

    As a fundamental problem in pattern recognition, graph matching has applications in a variety of fields, from computer vision to computational biology. In graph matching, patterns are modeled as graphs and pattern recognition amounts to finding a correspondence between the nodes of different graphs. Many formulations of this problem can be cast in general as a quadratic assignment problem, where a linear term in the objective function encodes node compatibility and a quadratic term encodes edge compatibility. The main research focus in this theme is about designing efficient algorithms for approximately solving the quadratic assignment problem, since it is NP-hard. In this paper we turn our attention to a different question: how to estimate compatibility functions such that the solution of the resulting graph matching problem best matches the expected solution that a human would manually provide. We present a method for learning graph matching: the training examples are pairs of graphs and the `labels' are ma...

  9. Matched-pair classification

    Energy Technology Data Exchange (ETDEWEB)

    Theiler, James P [Los Alamos National Laboratory

    2009-01-01

    Following an analogous distinction in statistical hypothesis testing, we investigate variants of machine learning where the training set comes in matched pairs. We demonstrate that even conventional classifiers can exhibit improved performance when the input data has a matched-pair structure. Online algorithms, in particular, converge quicker when the data is presented in pairs. In some scenarios (such as the weak signal detection problem), matched pairs can be generated from independent samples, with the effect not only doubling the nominal size of the training set, but of providing the structure that leads to better learning. A family of 'dipole' algorithms is introduced that explicitly takes advantage of matched-pair structure in the input data and leads to further performance gains. Finally, we illustrate the application of matched-pair learning to chemical plume detection in hyperspectral imagery.

  10. Learning graph matching.

    Science.gov (United States)

    Caetano, Tibério S; McAuley, Julian J; Cheng, Li; Le, Quoc V; Smola, Alex J

    2009-06-01

    As a fundamental problem in pattern recognition, graph matching has applications in a variety of fields, from computer vision to computational biology. In graph matching, patterns are modeled as graphs and pattern recognition amounts to finding a correspondence between the nodes of different graphs. Many formulations of this problem can be cast in general as a quadratic assignment problem, where a linear term in the objective function encodes node compatibility and a quadratic term encodes edge compatibility. The main research focus in this theme is about designing efficient algorithms for approximately solving the quadratic assignment problem, since it is NP-hard. In this paper we turn our attention to a different question: how to estimate compatibility functions such that the solution of the resulting graph matching problem best matches the expected solution that a human would manually provide. We present a method for learning graph matching: the training examples are pairs of graphs and the 'labels' are matches between them. Our experimental results reveal that learning can substantially improve the performance of standard graph matching algorithms. In particular, we find that simple linear assignment with such a learning scheme outperforms Graduated Assignment with bistochastic normalisation, a state-of-the-art quadratic assignment relaxation algorithm.

  11. Latent fingerprint matching.

    Science.gov (United States)

    Jain, Anil K; Feng, Jianjiang

    2011-01-01

    Latent fingerprint identification is of critical importance to law enforcement agencies in identifying suspects: Latent fingerprints are inadvertent impressions left by fingers on surfaces of objects. While tremendous progress has been made in plain and rolled fingerprint matching, latent fingerprint matching continues to be a difficult problem. Poor quality of ridge impressions, small finger area, and large nonlinear distortion are the main difficulties in latent fingerprint matching compared to plain or rolled fingerprint matching. We propose a system for matching latent fingerprints found at crime scenes to rolled fingerprints enrolled in law enforcement databases. In addition to minutiae, we also use extended features, including singularity, ridge quality map, ridge flow map, ridge wavelength map, and skeleton. We tested our system by matching 258 latents in the NIST SD27 database against a background database of 29,257 rolled fingerprints obtained by combining the NIST SD4, SD14, and SD27 databases. The minutiae-based baseline rank-1 identification rate of 34.9 percent was improved to 74 percent when extended features were used. In order to evaluate the relative importance of each extended feature, these features were incrementally used in the order of their cost in marking by latent experts. The experimental results indicate that singularity, ridge quality map, and ridge flow map are the most effective features in improving the matching accuracy.

  12. Optimal Packed String Matching

    DEFF Research Database (Denmark)

    Ben-Kiki, Oren; Bille, Philip; Breslauer, Dany

    2011-01-01

    In the packed string matching problem, each machine word accommodates – characters, thus an n-character text occupies n/– memory words. We extend the Crochemore-Perrin constantspace O(n)-time string matching algorithm to run in optimal O(n/–) time and even in real-time, achieving a factor – speedup...... over traditional algorithms that examine each character individually. Our solution can be efficiently implemented, unlike prior theoretical packed string matching work. We adapt the standard RAM model and only use its AC0 instructions (i.e., no multiplication) plus two specialized AC0 packed string...

  13. Pediatric MATCH Infographic

    Science.gov (United States)

    Infographic explaining NCI-COG Pediatric MATCH, a cancer treatment clinical trial for children and adolescents, from 1 to 21 years of age, that is testing the use of precision medicine for pediatric cancers.

  14. Data Matching Imputation System

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The DMIS dataset is a flat file record of the matching of several data set collections. Primarily it consists of VTRs, dealer records, Observer data in conjunction...

  15. Cognitive Levels Matching.

    Science.gov (United States)

    Brooks, Martin; And Others

    1983-01-01

    The Cognitive Levels Matching Project trains teachers to guide students' skill acquisition and problem-solving processes by assessing students' cognitive levels and adapting their teaching materials accordingly. (MLF)

  16. Approaches for Stereo Matching

    Directory of Open Access Journals (Sweden)

    Takouhi Ozanian

    1995-04-01

    Full Text Available This review focuses on the last decade's development of the computational stereopsis for recovering three-dimensional information. The main components of the stereo analysis are exposed: image acquisition and camera modeling, feature selection, feature matching and disparity interpretation. A brief survey is given of the well known feature selection approaches and the estimation parameters for this selection are mentioned. The difficulties in identifying correspondent locations in the two images are explained. Methods as to how effectively to constrain the search for correct solution of the correspondence problem are discussed, as are strategies for the whole matching process. Reasons for the occurrence of matching errors are considered. Some recently proposed approaches, employing new ideas in the modeling of stereo matching in terms of energy minimization, are described. Acknowledging the importance of computation time for real-time applications, special attention is paid to parallelism as a way to achieve the required level of performance. The development of trinocular stereo analysis as an alternative to the conventional binocular one, is described. Finally a classification based on the test images for verification of the stereo matching algorithms, is supplied.

  17. Local Search Approaches in Stable Matching Problems

    Directory of Open Access Journals (Sweden)

    Toby Walsh

    2013-10-01

    Full Text Available The stable marriage (SM problem has a wide variety of practical applications, ranging from matching resident doctors to hospitals, to matching students to schools or, more generally, to any two-sided market. In the classical formulation, n men and n women express their preferences (via a strict total order over the members of the other sex. Solving an SM problem means finding a stable marriage where stability is an envy-free notion: no man and woman who are not married to each other would both prefer each other to their partners or to being single. We consider both the classical stable marriage problem and one of its useful variations (denoted SMTI (Stable Marriage with Ties and Incomplete lists where the men and women express their preferences in the form of an incomplete preference list with ties over a subset of the members of the other sex. Matchings are permitted only with people who appear in these preference lists, and we try to find a stable matching that marries as many people as possible. Whilst the SM problem is polynomial to solve, the SMTI problem is NP-hard. We propose to tackle both problems via a local search approach, which exploits properties of the problems to reduce the size of the neighborhood and to make local moves efficiently. We empirically evaluate our algorithm for SM problems by measuring its runtime behavior and its ability to sample the lattice of all possible stable marriages. We evaluate our algorithm for SMTI problems in terms of both its runtime behavior and its ability to find a maximum cardinality stable marriage. Experimental results suggest that for SM problems, the number of steps of our algorithm grows only as O(n log(n, and that it samples very well the set of all stable marriages. It is thus a fair and efficient approach to generate stable marriages. Furthermore, our approach for SMTI problems is able to solve large problems, quickly returning stable matchings of large and often optimal size, despite the

  18. 具有并发操作的双边装配线平衡问题研究%Study on balancing problem of two sided assembly line with concurrent operation

    Institute of Scientific and Technical Information of China (English)

    杨涛; 鲁建厦; 孔令革

    2011-01-01

    介绍了双边装配线以及双边装配线平衡问题的概念;阐述了并发操作的概念,以及在双边装配线上存在的并发操作情况;分析了并发操作对双边装配线平衡问题产生的重要性以及复杂性;指出前人对双边装配线平衡问题研究的不足,并在此基础上,追加考虑并发操作影响,建立了具有并发操作的双边装配线平衡模型;介于遗传算法全局搜索能力强、具有潜在的并行性、允许使用复杂的适应度函数等优点,采用遗传算法研究了具有并发操作的双边装配线平衡模型的求解过程,并给出了详细的求解步骤;最后,将研究成果应用于某企业冰箱装配线,实例证明了模型及其算法的有效性.%The concept of two sided assembly line and its balancing problem is introduced and the concept of concurrent operation is described, and its situation which is existed on two sided assembly line is also explained. Then the importance and the complexity which is concurrent operation on two sided assembly line balancing problem is analyzed and the lack of the predecessors' researches on two sided assembly line balancing problem is pointed out, based on which a two sided assembly line with concurrent operation balancing model is built considering the impact of concurrent operation. Since genetic algorithm has the advantages of strong global search ability, potential parallelism and allows to use a complex fitness function, it is used to solve two sided assembly line with concurrent operation balancing model, where the solving steps are given in detail. Finally the research results is applied on a company refrigerator assembly line, which proves the effectiveness of model and its algorithm.

  19. Schema matching and mapping

    CERN Document Server

    Bellahsene, Zohra; Rahm, Erhard

    2011-01-01

    Requiring heterogeneous information systems to cooperate and communicate has now become crucial, especially in application areas like e-business, Web-based mash-ups and the life sciences. Such cooperating systems have to automatically and efficiently match, exchange, transform and integrate large data sets from different sources and of different structure in order to enable seamless data exchange and transformation. The book edited by Bellahsene, Bonifati and Rahm provides an overview of the ways in which the schema and ontology matching and mapping tools have addressed the above requirements

  20. Bayesian grid matching

    DEFF Research Database (Denmark)

    Hartelius, Karsten; Carstensen, Jens Michael

    2003-01-01

    A method for locating distorted grid structures in images is presented. The method is based on the theories of template matching and Bayesian image restoration. The grid is modeled as a deformable template. Prior knowledge of the grid is described through a Markov random field (MRF) model which...... nodes and the arc prior models variations in row and column spacing across the grid. Grid matching is done by placing an initial rough grid over the image and applying an ensemble annealing scheme to maximize the posterior distribution of the grid. The method can be applied to noisy images with missing...

  1. Middle matching mining algorithm

    Institute of Scientific and Technical Information of China (English)

    GUO Ping; CHEN Li

    2003-01-01

    A new algorithm for fast discovery of sequential patterns to solve the problems of too many candidate sets made by SPADE is presented, which is referred to as middle matching algorithm. Experiments on a large customer transaction database consisting of customer_id, transaction time, and transaction items demonstrate that the proposed algorithm performs better than SPADE attributed to its philosophy to generate a candidate set by matching two sequences in the middle place so as to reduce the number of the candidate sets.

  2. Dynamic Matching Markets and the Deferred Acceptance Mechanism

    DEFF Research Database (Denmark)

    Kennes, John; Monte, Daniel; Tumennasan, Norovsambuu

    In many dynamic matching markets, priorities depend on previous allocations. In such environments, agents on the proposing side can manipulate the period-by-period deferred acceptance (DA) mechanism. We show that the fraction of agents with incentives to manipulate the DA mechanism approaches zero...... together justify the implementation of the period-by-period DA mechanism in dynamic markets....

  3. Technical Regulations Comparative Analysis of Food Contact Materials in the Two Sides of the Taiwan Strait%海峡两岸食品接触材料技术法规对比分析研究

    Institute of Scientific and Technical Information of China (English)

    赖莺; 林睿; 普旭力; 董清木; 黄宗平

    2014-01-01

    In this paper, the framework, sanitary standards, testing methodologies, etc. of technical regulations for food contact materials in the two sides of the Taiwan Strait were described. And differences on hygiene standards, material classification, food simulants, limited requirements and other aspects of food contact materials between the two sides of the Taiwan Strait were studied.%本文介绍了海峡两岸食品接触材料技术法规的框架、卫生标准和检验方法体系等情况,并对二者在食品接触材料卫生标准体系、材质分类、食品模拟物和限量要求等方面的差异进行了分析研究。

  4. Factorized Graph Matching.

    Science.gov (United States)

    Zhou, Feng; de la Torre, Fernando

    2015-11-19

    Graph matching (GM) is a fundamental problem in computer science, and it plays a central role to solve correspondence problems in computer vision. GM problems that incorporate pairwise constraints can be formulated as a quadratic assignment problem (QAP). Although widely used, solving the correspondence problem through GM has two main limitations: (1) the QAP is NP-hard and difficult to approximate; (2) GM algorithms do not incorporate geometric constraints between nodes that are natural in computer vision problems. To address aforementioned problems, this paper proposes factorized graph matching (FGM). FGM factorizes the large pairwise affinity matrix into smaller matrices that encode the local structure of each graph and the pairwise affinity between edges. Four are the benefits that follow from this factorization: (1) There is no need to compute the costly (in space and time) pairwise affinity matrix; (2) The factorization allows the use of a path-following optimization algorithm, that leads to improved optimization strategies and matching performance; (3) Given the factorization, it becomes straight-forward to incorporate geometric transformations (rigid and non-rigid) to the GM problem. (4) Using a matrix formulation for the GM problem and the factorization, it is easy to reveal commonalities and differences between different GM methods. The factorization also provides a clean connection with other matching algorithms such as iterative closest point; Experimental results on synthetic and real databases illustrate how FGM outperforms state-of-the-art algorithms for GM. The code is available at http://humansensing.cs.cmu.edu/fgm.

  5. A Football Match

    Institute of Scientific and Technical Information of China (English)

    彭硕

    2002-01-01

    It was a Saturday morning, our school football team was going to have a match with the No. 28 Middle Schooh They were really a strong team. But we weren't afraid of them. We had many mare good players on our team, so we were stronger than ever before.

  6. Derivatives of Matching.

    Science.gov (United States)

    Herrnstein, R. J.

    1979-01-01

    The matching law for reinforced behavior solves a differential equation relating infinitesimal changes in behavior to infinitesimal changes in reinforcement. The equation expresses plausible conceptions of behavior and reinforcement, yields a simple nonlinear operator model for acquisition, and suggests a alternative to the economic law of…

  7. n! matchings, n! posets

    CERN Document Server

    Claesson, Anders

    2010-01-01

    We show that there are n! matchings on 2n points without, so called, left (neighbor) nestings. We also define a set of naturally labeled (2+2)-free posets, and show that there are n! such posets on n elements. Our work was inspired by Bousquet-M\\'elou, Claesson, Dukes and Kitaev [arXiv:0806.0666]. They gave bijections between four classes of combinatorial objects: matchings with no neighbor nestings (due to Stoimenow), unlabeled (2+2)-free posets, permutations avoiding a specific pattern, and so called ascent sequences. We believe that certain statistics on our matchings and posets could generalize the work of Bousquet-M\\'elou et al.\\ and we make a conjecture to that effect. We also identify natural subsets of matchings and posets that are equinumerous to the class of unlabeled (2+2)-free posets. We give bijections that show the equivalence of (neighbor) restrictions on nesting arcs with (neighbor) restrictions on crossing arcs. These bijections are thought to be of independent interest. One of the bijections...

  8. 'Wiggle matching' radiocarbon dates

    NARCIS (Netherlands)

    Ramsey, CB; van der Plicht, J; Weninger, B

    2001-01-01

    This paper covers three different methods of matching radiocarbon dates to the 'wiggles' of the calibration curve in those situations where the age difference between the C-14 dates is known. These methods are most often applied to tree-ring sequences. The simplest approach is to use a classical Chi

  9. Polytypic pattern matching

    NARCIS (Netherlands)

    Jeuring, J.T.

    2007-01-01

    The pattern matching problem can be informally specified as follows: given a pattern and a text, find all occurrences of the pattern in the text. The pattern and the text may both be lists, or they may both be trees, or they may both be multi-dimensional arrays, etc. This paper describes a general p

  10. Matching Supernovae to Galaxies

    Science.gov (United States)

    Kohler, Susanna

    2016-12-01

    developed a new automated algorithm for matching supernovae to their host galaxies. Their work builds on currently existing algorithms and makes use of information about the nearby galaxies, accounts for the uncertainty of the match, and even includes a machine learning component to improve the matching accuracy.Gupta and collaborators test their matching algorithm on catalogs of galaxies and simulated supernova events to quantify how well the algorithm is able to accurately recover the true hosts.Successful MatchingThe matching algorithms accuracy (purity) as a function of the true supernova-host separation, the supernova redshift, the true hosts brightness, and the true hosts size. [Gupta et al. 2016]The authors find that when the basic algorithm is run on catalog data, it matches supernovae to their hosts with 91% accuracy. Including the machine learning component, which is run after the initial matching algorithm, improves the accuracy of the matching to 97%.The encouraging results of this work which was intended as a proof of concept suggest that methods similar to this could prove very practical for tackling future survey data. And the method explored here has use beyond matching just supernovae to their host galaxies: it could also be applied to other extragalactic transients, such as gamma-ray bursts, tidal disruption events, or electromagnetic counterparts to gravitational-wave detections.CitationRavi R. Gupta et al 2016 AJ 152 154. doi:10.3847/0004-6256/152/6/154

  11. Study of the transmission of two-side internal level gear and spur gear%双联内锥齿轮和圆柱齿轮传动研究

    Institute of Scientific and Technical Information of China (English)

    王镇; 沈际春; 王飞

    2001-01-01

    This paper studies the contact lines of tooth surface of the transmission of two-sides level gear and spur gear and analyses the property of engagement.%计算和研究了双联锥形齿轮和圆柱齿轮啮合时的齿面接触线,并分析了啮合时的特点和性能。

  12. 单面与双面信息广告重复效应的实证研究%An Empirical Study on One-sided VS Two-sided Advertising's Repetition Effect

    Institute of Scientific and Technical Information of China (English)

    代祺; 梁樑

    2011-01-01

    By introducing the variable of business ethics perception and integrating Optimal Arousal Theory, Processing Fluency Model, Attribution Theory and Two Factor Theory, the study compares the repetition effects differences between one and two-sided advertisements. Using inter-group experiment design, the results suggest that two-sided advertisements are processed less fluently than one-sided ones, but the percentage of accurate recall and advertisement response are higher than its counterpart. The repetition effects are inverted U shape for one-side advertisements and monotonic increase for two-sided advertisements. Thus, the wearing out effects of two-sided advertisements is delayed. The diversity in perception of business ethics play important role in determining this differences.%通过引入企业道德感知变量,并在整合最优唤醒理论、加工流畅模型、归因理论和两因素理论的基础上,深入剖析了单、双面信息广告重复效应的差异.研究结果表明:双面信息广告比单面信息广告加工更困难,但消费者对其广告正确回忆率更高,广告反应也更积极.单面信息广告的重复效应呈现先增后减的倒U趋势,而双面信息广告的重复效应呈单调递增趋势,疲劳效应延迟出现.消费者对企业道德感知的差异在很大程度上决定了单、双面信息广告重复效应的差异.

  13. [Propensity score matching in SPSS].

    Science.gov (United States)

    Huang, Fuqiang; DU, Chunlin; Sun, Menghui; Ning, Bing; Luo, Ying; An, Shengli

    2015-11-01

    To realize propensity score matching in PS Matching module of SPSS and interpret the analysis results. The R software and plug-in that could link with the corresponding versions of SPSS and propensity score matching package were installed. A PS matching module was added in the SPSS interface, and its use was demonstrated with test data. Score estimation and nearest neighbor matching was achieved with the PS matching module, and the results of qualitative and quantitative statistical description and evaluation were presented in the form of a graph matching. Propensity score matching can be accomplished conveniently using SPSS software.

  14. Resurgence matches quantization

    Science.gov (United States)

    Couso-Santamaría, Ricardo; Mariño, Marcos; Schiappa, Ricardo

    2017-04-01

    The quest to find a nonperturbative formulation of topological string theory has recently seen two unrelated developments. On the one hand, via quantization of the mirror curve associated to a toric Calabi–Yau background, it has been possible to give a nonperturbative definition of the topological-string partition function. On the other hand, using techniques of resurgence and transseries, it has been possible to extend the string (asymptotic) perturbative expansion into a transseries involving nonperturbative instanton sectors. Within the specific example of the local {{{P}}2} toric Calabi–Yau threefold, the present work shows how the Borel–Padé–Écalle resummation of this resurgent transseries, alongside occurrence of Stokes phenomenon, matches the string-theoretic partition function obtained via quantization of the mirror curve. This match is highly non-trivial, given the unrelated nature of both nonperturbative frameworks, signaling at the existence of a consistent underlying structure.

  15. Resurgence Matches Quantization

    CERN Document Server

    Couso-Santamaría, Ricardo; Schiappa, Ricardo

    2016-01-01

    The quest to find a nonperturbative formulation of topological string theory has recently seen two unrelated developments. On the one hand, via quantization of the mirror curve associated to a toric Calabi-Yau background, it has been possible to give a nonperturbative definition of the topological-string partition function. On the other hand, using techniques of resurgence and transseries, it has been possible to extend the string (asymptotic) perturbative expansion into a transseries involving nonperturbative instanton sectors. Within the specific example of the local P2 toric Calabi-Yau threefold, the present work shows how the Borel-Pade-Ecalle resummation of this resurgent transseries, alongside occurrence of Stokes phenomenon, matches the string-theoretic partition function obtained via quantization of the mirror curve. This match is highly non-trivial, given the unrelated nature of both nonperturbative frameworks, signaling at the existence of a consistent underlying structure.

  16. Matchings on infinite graphs

    CERN Document Server

    Bordenave, Charles; Salez, Justin

    2011-01-01

    We prove that the local weak convergence of a sequence of graphs is enough to guarantee the convergence of their normalized matching numbers. The limiting quantity is described by a local recursion defined on the weak limit of the graph sequence. However, this recursion may admit several solutions, implying non-trivial long-range dependencies between the edges of a largest matching. We overcome this lack of correlation decay by introducing a perturbative parameter called the temperature, which we let progressively go to zero. When the local weak limit is a unimodular Galton-Watson tree, the recursion simplifies into a distributional equation, resulting into an explicit formula that considerably extends the well-known one by Karp and Sipser for Erd\\"os-R\\'enyi random graphs.

  17. Characteristic Evolution and Matching

    Directory of Open Access Journals (Sweden)

    Winicour Jeffrey

    2005-12-01

    Full Text Available I review the development of numerical evolution codes for general relativity based upon the characteristic initial value problem. Progress is traced from the early stage of 1D feasibility studies to 2D axisymmetric codes that accurately simulate the oscillations and gravitational collapse of relativistic stars and to current 3D codes that provide pieces of a binary black hole spacetime. A prime application of characteristic evolution is to compute waveforms via Cauchy-characteristic matching, which is also reviewed.

  18. Match injury rates in professional soccer vary with match result, match venue, and type of competition.

    Science.gov (United States)

    Bengtsson, Håkan; Ekstrand, Jan; Waldén, Markus; Hägglund, Martin

    2013-07-01

    Player activities in soccer matches are influenced by the match result and match venue. It is not known whether injury rates are influenced by these factors. To investigate whether there are associations between injury rates and the match result, venue, and type of competition in male soccer. Cohort study; Level of evidence, 3. Twenty-six professional clubs from 10 countries were followed prospectively during 9 seasons (2001-2002 to 2009-2010). All matches, and injuries occurring in these matches, were registered by the team's medical staff. An injury was registered if it resulted in player absence from training or matches. Information about match result, venue, and type of competition for all reported matches was gathered by the authors from online databases. Injury rates in matches with varying match characteristics were compared by use of generalized estimating equations. Odds ratios (ORs) with 95% confidence intervals (CIs) were calculated. A total of 2738 injuries during 6010 matches were registered. There were no associations between odds of 1 injury occurrence and match result or type of competition, whereas the odds were decreased in matches played away compared with home matches (OR, 0.89; 95% CI, 0.80-0.99). The odds of 2 or more injury occurrences in a match were increased in matches resulting in a draw (OR, 1.39; 95% CI, 1.15-1.69) or loss (OR, 1.66; 95% CI, 1.38-1.98) compared with matches won and were decreased in other cup matches compared with league matches (OR, 0.57; 95% CI, 0.39-0.84) and in matches played away compared with home matches (OR, 0.70; 95% CI, 0.60-0.82). Finally, injuries with more than 1 week's absence occurred more frequently in Champions League matches compared with league matches both for matches with 1 injury (OR, 1.26; 95% CI, 1.09-1.45) and matches with 2 or more injuries (OR, 1.57; 95% CI, 1.13-2.20). The odds of 2 or more injury occurrences in professional soccer were higher in matches resulting in a loss or a draw compared

  19. One-Match and All-Match Categories for Keywords Matching in Chatbot

    Directory of Open Access Journals (Sweden)

    Abbas S. Lokman

    2010-01-01

    Full Text Available Problem statement: Artificial intelligence chatbot is a technology that makes interactions between men and machines using natural language possible. From literature of chatbots keywords/pattern matching techniques, potential issues for improvement had been discovered. The discovered issues are in the context of keywords arrangement for matching precedence and keywords variety for matching flexibility. Approach: Combining previous techniques/mechanisms with some additional adjustment, new technique to be used for keywords matching process is proposed. Using newly developed chatbot named ViDi (abbreviation for Virtual Diabetes physician which is a chatbot for diabetes education activity as a testing medium, the proposed technique named One-Match and All-Match Categories (OMAMC is being used to test the creation of possible keywords surrounding one sample input sentence. The result for possible keywords created by this technique then being compared to possible keywords created by previous chatbots techniques surrounding the same sample sentence in matching precedence and matching flexibility context. Results: OMAMC technique is found to be improving previous matching techniques in matching precedence and flexibility context. This improvement is seen to be useful for shortening matching time and widening matching flexibility within the chatbots keywords matching process. Conclusion: OMAMC for keywords matching in chatbot is shown to be an improvement over previous techniques in the context of keywords arrangement for matching precedence and keywords variety for matching flexibility.

  20. PATTERN MATCHING IN MODELS

    Directory of Open Access Journals (Sweden)

    Cristian GEORGESCU

    2005-01-01

    Full Text Available The goal of this paper is to investigate how such a pattern matching could be performed on models,including the definition of the input language as well as the elaboration of efficient matchingalgorithms. Design patterns can be considered reusable micro-architectures that contribute to anoverall system architecture. Frameworks are also closely related to design patterns. Componentsoffer the possibility to radically change the behaviors and services offered by an application bysubstitution or addition of new components, even a long time after deployment. Software testing isanother aspect of reliable development. Testing activities mainly consist in ensuring that a systemimplementation conforms to its specifications.

  1. Apfel's excellent match

    Science.gov (United States)

    1997-01-01

    Apfel's excellent match: This series of photos shows a water drop containing a surfactant (Triton-100) as it experiences a complete cycle of superoscillation on U.S. Microgravity Lab-2 (USML-2; October 1995). The time in seconds appears under the photos. The figures above the photos are the oscillation shapes predicted by a numerical model. The time shown with the predictions is nondimensional. Robert Apfel (Yale University) used the Drop Physics Module on USML-2 to explore the effect of surfactants on liquid drops. Apfel's research of surfactants may contribute to improvements in a variety of industrial processes, including oil recovery and environmental cleanup.

  2. Where is the match?

    OpenAIRE

    Alba Avilés, Manuel

    2015-01-01

    WhereIsTheMatch is a very ambitious project that consists of developing my own social network mobile app for Android. This app is focused on easily finding people and places to play sports. The main idea of this project is create a first step to a final product and my own developing style. I knew from the beginning that this would be a very hard and a very demanding task because of the several areas that are involved in the development of a mobile app, such as database implementation, interfa...

  3. Outsourced pattern matching

    DEFF Research Database (Denmark)

    Faust, Sebastian; Hazay, Carmit; Venturi, Daniele

    2013-01-01

    on concrete and important functionalities and give the first protocol for the pattern matching problem in the cloud. Loosely speaking, this problem considers a text T that is outsourced to the cloud S by a client C T . In a query phase, clients C 1, …, C l run an efficient protocol with the server S...... that contain confidential data (e.g., health related data about patient history). Our constructions offer simulation-based security in the presence of semi-honest and malicious adversaries (in the random oracle model) and limit the communication in the query phase to O(m) bits plus the number of occurrences...

  4. 海峡两岸农业合作的政策演变、成效与对策%Policy Evolution, Effects and Countermeasures on Agricultural Cooperation between Two Sides across Taiwan Strait

    Institute of Scientific and Technical Information of China (English)

    陈灵; 赖文山; 董微; 庄佩芬

    2012-01-01

    The paper summarizes the policy evolution and effects of agricultural cooperation between two sides cross Taiwan Strait. The agricultural cooperation experimental zones and Taiwan farmer' s pioneer park are the major platforms between two sides cross Taiwan Strait, but the interaction cooperative mechanism in agricultural economic bodies between two sides cross Taiwan Strait hasn't yet formed. And the countermeasures including promoting the construction of the economic zone on the west side of the Taiwan Strait, strengthening policy guidance, building the Common Market, strengthening policy innovations and cooperation in science and technology, focusing on the exchanges and the introduction of the talented human resources, and optimizing the cooperation mechanism.%总结了海峡两岸农业合作发展的政策演变过程与成效,认为在两岸农业合作中两岸农业合作试验区和台湾农民创业园是主要的连接载体,但两岸农业经济主体的合作机制尚未形成双向互动;同时提出要加快海西经济区建设,强化政策引导,建立两岸“共同市场”;加强政策创新与科技合作,注重优秀资源和人才的交流与引进;优化配置,完善两岸农业合作机制。

  5. Generalized Orthogonal Matching Pursuit

    CERN Document Server

    Wang, Jian; Shim, Byonghyo

    2011-01-01

    As a greedy algorithm to recover sparse signals from compressed measurements, the orthogonal matching pursuit (OMP) algorithm has received much attention in recent years. In this paper, we introduce an extension of the orthogonal matching pursuit (gOMP) for pursuing efficiency in reconstructing sparse signals. Our approach, henceforth referred to as generalized OMP (gOMP), is literally a generalization of the OMP in the sense that multiple indices are identified per iteration. Owing to the selection of multiple "correct" indices, the gOMP algorithm is finished with much smaller number of iterations compared to the OMP. We show that the gOMP can perfectly reconstruct any $K$-sparse signals ($K > 1$), provided that the sensing matrix satisfies the RIP with $\\delta_{NK} < \\frac{\\sqrt{N}}{\\sqrt{K} + 2 \\sqrt{N}}$. We also demonstrate by empirical simulations that the gOMP has excellent recovery performance comparable to $\\ell_1$-minimization technique with fast processing speed and competitive computational com...

  6. 基于双边市场理论的苹果App Store模式研究%The App Store Model of Apple Based on the Theory of Two- Sided Markets

    Institute of Scientific and Technical Information of China (English)

    张利斌; 张广霞

    2012-01-01

    从双边市场理论的定义、识别条件、特征、分类和平台企业战略等角度,分析了苹果App store模式的特征及平台战略.%From the viewpoints of definition, identification condition, characteristics, classification and strategy of platform enterprises based on the theory of two-sided markets, we analyze the characteristics and platform strategies of the App Store Model of Apple.

  7. Characteristic Evolution and Matching

    Directory of Open Access Journals (Sweden)

    Winicour Jeffrey

    2009-04-01

    Full Text Available I review the development of numerical evolution codes for general relativity based upon the characteristic initial value problem. Progress is traced from the early stage of 1D feasibility studies to 2D axisymmetric codes that accurately simulate the oscillations and gravitational collapse of relativistic stars and to current 3D codes that provide pieces of a binary black hole spacetime. Cauchy codes have now been successful at simulating all aspects of the binary black hole problem inside an artificially constructed outer boundary. A prime application of characteristic evolution is to eliminate the role of this artificial outer boundary via Cauchy-characteristic matching, by which the radiated waveform can be computed at null infinity. Progress in this direction is discussed.

  8. Matching with Commitments

    CERN Document Server

    Costello, Kevin; Tripathi, Pushkar

    2012-01-01

    We consider the following stochastic optimization problem first introduced by Chen et al. in \\cite{chen}. We are given a vertex set of a random graph where each possible edge is present with probability p_e. We do not know which edges are actually present unless we scan/probe an edge. However whenever we probe an edge and find it to be present, we are constrained to picking the edge and both its end points are deleted from the graph. We wish to find the maximum matching in this model. We compare our results against the optimal omniscient algorithm that knows the edges of the graph and present a 0.573 factor algorithm using a novel sampling technique. We also prove that no algorithm can attain a factor better than 0.898 in this model.

  9. The earliest matches.

    Directory of Open Access Journals (Sweden)

    Naama Goren-Inbar

    Full Text Available Cylindrical objects made usually of fired clay but sometimes of stone were found at the Yarmukian Pottery Neolithic sites of Sha'ar HaGolan and Munhata (first half of the 8(th millennium BP in the Jordan Valley. Similar objects have been reported from other Near Eastern Pottery Neolithic sites. Most scholars have interpreted them as cultic objects in the shape of phalli, while others have referred to them in more general terms as "clay pestles," "clay rods," and "cylindrical clay objects." Re-examination of these artifacts leads us to present a new interpretation of their function and to suggest a reconstruction of their technology and mode of use. We suggest that these objects were components of fire drills and consider them the earliest evidence of a complex technology of fire ignition, which incorporates the cylindrical objects in the role of matches.

  10. The earliest matches.

    Science.gov (United States)

    Goren-Inbar, Naama; Freikman, Michael; Garfinkel, Yosef; Goring-Morris, A Nigel; Goring-Morris, Nigel A; Grosman, Leore

    2012-01-01

    Cylindrical objects made usually of fired clay but sometimes of stone were found at the Yarmukian Pottery Neolithic sites of Sha'ar HaGolan and Munhata (first half of the 8(th) millennium BP) in the Jordan Valley. Similar objects have been reported from other Near Eastern Pottery Neolithic sites. Most scholars have interpreted them as cultic objects in the shape of phalli, while others have referred to them in more general terms as "clay pestles," "clay rods," and "cylindrical clay objects." Re-examination of these artifacts leads us to present a new interpretation of their function and to suggest a reconstruction of their technology and mode of use. We suggest that these objects were components of fire drills and consider them the earliest evidence of a complex technology of fire ignition, which incorporates the cylindrical objects in the role of matches.

  11. TWO SIDES OF THE SAME COIN

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    With trade of over $100 billion in 2009, the importance of China and Africa bilateral exchanges are growing daily. This blooming relationship increases the need of understanding the ways of doing business.This regular column will provide a practical insight of doing business in China, including tips and advice based on experience.

  12. THE TWO SIDES OF MONEY LAUNDERING

    Directory of Open Access Journals (Sweden)

    Corina – Maria ENE

    2014-12-01

    Full Text Available The mainly goal of money laundering is to carry out more and more illegal economic transactions or activities to produce individual or groups gains and then to legitimate them. Money laundering converts illicit source of money generated by criminal activities in order to hide the connection between money and their original illegal activities. This is one of money laundering side. The second side implies corruption. While money laundering is a passing channel for illicit funds due to its criminal origin source, such funds may derive from corruption offences. All corruption’s forms represent the most important illicit funds branches for money laundering process. Corrupt people methods used to exploit the national and international financial system reflect the relationship between those two criminal activities. Criminals achieve their personal interests by hiding their corruption proceeds and transfer these gains to official economies. Corruption spread in any society entails money laundering spread, and the converse, too. There is a quite “indecent” relationship between money laundering and corruption. This paper tries to identify the multiple connections between the two phenomenons showing the negative impacts these criminal behaviours are having on the national and international economy. We conclude by highlighting the necessity of a multidisciplinary approach in order to fight against money laundering and corruption by integrating these problem frameworks at national level. International community must focus their resources on money laundering and corruption risks areas and maximize their response impact.

  13. The Two Sides of the Representative Coin

    Directory of Open Access Journals (Sweden)

    Keith Sutherland

    2011-12-01

    Full Text Available In Federalist 10 James Madison drew a functional distinction between “parties” (advocates for factional interests and “judgment” (decision-making for the public good and warned of the corrupting effect of combining both functions in a “single body of men.” This paper argues that one way of overcoming “Madisonian corruption” would be by restricting political parties to an advocacy role, reserving the judgment function to an allotted (randomly-selected microcosm of the whole citizenry, who would determine the outcome of parliamentary debates by secret ballot—a division of labour suggested by James Fishkin’s experiments in deliberative polling. The paper then defends this radical constitutional proposal against Bernard Manin’s (1997 claim that an allotted microcosm could not possibly fulfil the “consent” requirement of Natural Right theory. Not only does the proposal challenge Manin’s thesis, but a 28th Amendment implementing it would finally reconcile the competing visions that have bedevilled representative democracy since the Constitutional Convention of 1787.

  14. The Two Sides of the Representative Coin

    Directory of Open Access Journals (Sweden)

    Keith Sutherland

    2011-12-01

    Full Text Available In Federalist 10 James Madison drew a functional distinction between “parties” (advocates for factional interests and “judgment” (decision-making for the public good and warned of the corrupting effect of combining both functions in a “single body of men.” This paper argues that one way of overcoming “Madisonian corruption” would be by restricting political parties to an advocacy role, reserving the judgment function to an allotted (randomly-selected microcosm of the whole citizenry, who would determine the outcome of parliamentary debates by secret ballot—a division of labour suggested by James Fishkin’s experiments in deliberative polling. The paper then defends this radical constitutional proposal against Bernard Manin’s (1997 claim that an allotted microcosm could not possibly fulfil the “consent” requirement of Natural Right theory. Not only does the proposal challenge Manin’s thesis, but a 28th Amendment implementing it would finally reconcile the competing visions that have bedevilled representative democracy since the Constitutional Convention of 1787.

  15. The two sides of silicon detectors

    CERN Document Server

    Devine, S R

    2001-01-01

    /p/n sup + and essentially two p-n junctions within one device. With increasing bias voltage, as the electric field is extending into the detector bulk from opposite sides of the silicon detector, there are two distinct depletion regions that collect charge signal independently. Summing the signal charge from the two regions, one is able to reconstruct the initial energy of the incident particle. From Transient Current measurements it is apparent that E-field manipulation is possible by excess carrier injection, enabling a high enough E-field to extend across the width of the detector, allowing for efficient charge collection. Results are presented on in situ irradiation of silicon detector's at cryogenic temperature. The results show that irradiation at cryogenic temperatures does not detrimentally effect a silicon detectors performance when compared to its irradiation at room temperature. Operation of silicon devices at cryogenic temperatures offers the advantage of reducing radiation-induced leakage curren...

  16. The Two Sides to the Internet Coin

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    Since China hooked up to the Internet in 1994, Chinese netizenship has increased from the few hundreds of thousands recorded in 1995 to its present 87 million - second largest in the world. The Internet has streamlined daily life and also influenced life concepts. The voice of the“silent majority” now heard on the Internet, speaks of and searches for solutions to psychological problems exacerbated by a transitional society.

  17. Optimizing Transmission Line Matching Circuits

    OpenAIRE

    Novak, S.

    1996-01-01

    When designing transmission line matching circuits, there exist often overlooked, additional, not much used, degree of choice in the selection of the transmission line impedance. In this work are presented results of CAD analysis for the two element transmission line matching networks, demonstrating that selecting matching circuits transmission lines with higher impedance, than usually used 50 or 75 ohms, can in most cases substantially decrease the physical dimension of the final matching ci...

  18. 论双面信息策略在突发公共事件传播中的应用%On the Application of Two-sided Message Strategy in the Communication of Public Emergencies

    Institute of Scientific and Technical Information of China (English)

    刘中刚

    2015-01-01

    该研究基于归因理论、疫苗理论、锚定理论,结合相关文献分析了在突发公共事件传播中运用双面信息策略的必要性和可行性,阐述了双面信息策略在突发公共事件传播中提高可信度及抵制谣言的作用,探索具体的实施策略。该研究为突发公共事件的传播和谣言的抵制研究奠定了一定的理论基础,并能为相关应用研究提供理论指导。%Based on the attribution theory, vaccine theory and anchoring theory and taking in to account some relevant literatures, this paper analyzes the necessity and feasibility of applying two-sided message strategy in the communication of public emergencies, argues that the two-sided message strategy in the communication of public emergencies can be used to improve credibility and to resist to rumors and explores some specific implementation methods. The findings of this paper set a theoretic foundation for further researches into the communication of public emergencies and resistance to rumors and provide theoretic guidance to relevant application researches.

  19. VisMatchmaker: Cooperation of the User and the Computer in Centralized Matching Adjustment.

    Science.gov (United States)

    Law, Po-Ming; Wu, Wenchao; Zheng, Yixian; Qu, Huamin

    2017-01-01

    Centralized matching is a ubiquitous resource allocation problem. In a centralized matching problem, each agent has a preference list ranking the other agents and a central planner is responsible for matching the agents manually or with an algorithm. While algorithms can find a matching which optimizes some performance metrics, they are used as a black box and preclude the central planner from applying his domain knowledge to find a matching which aligns better with the user tasks. Furthermore, the existing matching visualization techniques (i.e. bipartite graph and adjacency matrix) fail in helping the central planner understand the differences between matchings. In this paper, we present VisMatchmaker, a visualization system which allows the central planner to explore alternatives to an algorithm-generated matching. We identified three common tasks in the process of matching adjustment: problem detection, matching recommendation and matching evaluation. We classified matching comparison into three levels and designed visualization techniques for them, including the number line view and the stacked graph view. Two types of algorithmic support, namely direct assignment and range search, and their interactive operations are also provided to enable the user to apply his domain knowledge in matching adjustment.

  20. An improved 2-agent kidney exchange mechanism

    DEFF Research Database (Denmark)

    Caragiannis, Ioannis; Filos-Ratsikas, Aris; Procaccia, Ariel D.

    2015-01-01

    We study a mechanism design version of matching computation in graphs that models the game played by hospitals participating in pairwise kidney exchange programs. We present a new randomized matching mechanism for two agents which is truthful in expectation and has an approximation ratio of 3...

  1. An HLA matched donor! An HLA matched donor? What do you mean by: HLA matched donor?

    Science.gov (United States)

    van Rood, J J; Oudshoorn, M

    1998-07-01

    The term 'an HLA matched donor' is in general used without giving exact information on the level of resolution of the HLA typing. This can lead to misunderstandings. A proposal is formulated to agree on using six match categories according to the HLA typing technique used to indicate the level of confidence of the matching.

  2. [Uricosuric agent].

    Science.gov (United States)

    Ohno, Iwao

    2008-04-01

    Urate lowering treatment is indicated in patients with recurrent acute attacks, tophi, gouty arthropathy, radiographic changes of gout, multiple joint involvement, or associated uric acid nephrolithiasis. Uricosuric agents like benzbromarone and probenecid are very useful to treat hyperuricemia as well as allopurinol (xanthine oxidase inhibitor). Uricosuric agents act the urate lowering effect through blocking the URAT1, an urate transporter, in brush border of renal proximal tubular cells. In order to avoid the nephrotoxicity and urolithiasis due to increasing of urinary urate excretion by using uricosuric agents, the proper urinary tract management (enough urine volume and correction of aciduria) should be performed.

  3. Characteristic Evolution and Matching

    Directory of Open Access Journals (Sweden)

    Jeffrey Winicour

    2012-01-01

    Full Text Available I review the development of numerical evolution codes for general relativity based upon the characteristic initial-value problem. Progress in characteristic evolution is traced from the early stage of 1D feasibility studies to 2D-axisymmetric codes that accurately simulate the oscillations and gravitational collapse of relativistic stars and to current 3D codes that provide pieces of a binary black-hole spacetime. Cauchy codes have now been successful at simulating all aspects of the binary black-hole problem inside an artificially constructed outer boundary. A prime application of characteristic evolution is to extend such simulations to null infinity where the waveform from the binary inspiral and merger can be unambiguously computed. This has now been accomplished by Cauchy-characteristic extraction, where data for the characteristic evolution is supplied by Cauchy data on an extraction worldtube inside the artificial outer boundary. The ultimate application of characteristic evolution is to eliminate the role of this outer boundary by constructing a global solution via Cauchy-characteristic matching. Progress in this direction is discussed.

  4. Quantum image matching

    Science.gov (United States)

    Jiang, Nan; Dang, Yijie; Wang, Jian

    2016-09-01

    Quantum image processing (QIP) means the quantum-based methods to speed up image processing algorithms. Many quantum image processing schemes claim that their efficiency is theoretically higher than their corresponding classical schemes. However, most of them do not consider the problem of measurement. As we all know, measurement will lead to collapse. That is to say, executing the algorithm once, users can only measure the final state one time. Therefore, if users want to regain the results (the processed images), they must execute the algorithms many times and then measure the final state many times to get all the pixels' values. If the measurement process is taken into account, whether or not the algorithms are really efficient needs to be reconsidered. In this paper, we try to solve the problem of measurement and give a quantum image matching algorithm. Unlike most of the QIP algorithms, our scheme interests only one pixel (the target pixel) instead of the whole image. It modifies the probability of pixels based on Grover's algorithm to make the target pixel to be measured with higher probability, and the measurement step is executed only once. An example is given to explain the algorithm more vividly. Complexity analysis indicates that the quantum scheme's complexity is O(2n) in contradistinction to the classical scheme's complexity O(2^{2n+2m}), where m and n are integers related to the size of images.

  5. Vasoactive Agents

    OpenAIRE

    Husedzinovic, Ino; Bradic, Nikola; Goranovic, Tanja

    2006-01-01

    This article is a short review of vasoactive drugs which are in use in todays clinical practice. In the past century, development of vasoactive drugs went through several phases. All of these drugs are today divided into several groups, depending on their place of action, pharmacological pathways and/or effects on target organ or organ system. Hence, many different agents are today in clinical practice, we have shown comparison between them. These agents provide new directions in the treatmen...

  6. 求解双边装配线第二类平衡问题的一种蚁群算法∗%Ant Algorithm for Two-sided Assembly Line Balancing of Type-2

    Institute of Scientific and Technical Information of China (English)

    胡俊逸; 张则强; 金初云

    2016-01-01

    Two-sided assembly line problem is more difficult than one-sided assembly line problem as the task distribution procedure. In this problem, besides the precedence constraints among tasks, the operation directions constraints of tasks and the requirement of parallel work should also be taken into consideration. The mathematical model and an ant colony algorithm were constructed to solve the Two-sided Assembly Line Balancing Problem of type-2(TALBP-Ⅱ). A hybrid ant-based search rule and a heuristic task distribu-tion rule were used in order to establish a feasible solution, global pheromone trail update and the optimum solution search strategy were considered. The feasibility of this algorithm was indicated by a case of a loader final assembly line.%双边装配线在任务分配过程中,除考虑任务先后关系约束外还需兼顾任务操作方位约束及任务操作的并行性要求。针对双边装配线第二类平衡问题提出了数学模型并构建了一种蚁群算法。此算法采用蚁群综合搜索规则、启发式任务分配规则构造一个可行解,对最优解的搜索过程提出了可行的规划方案。最后,通过为某型装载机的实例提出多组较好的平衡方案,验证了此算法的有效性。

  7. Study on the pricing of smartphone operating system based on two-sided markets%基于双边市场理论智能手机操作系统定价研究

    Institute of Scientific and Technical Information of China (English)

    李文文

    2014-01-01

    Market of smartphone operating system has the characteristics of the two-sided mar-ket.Based on the theory of two-sided market,a Hotelling model is established to study the rela-tionships of smartphone operating system vendor,mobile phone application software developer and the terminal consumer.Three conclusions are reached.First,the deduction proportion that operating system vendors take from developers depends on the differences between the cross-group externalities of consumer and developer.Second,consumer price is negatively correlated with the cross-group externalities of consumer and developer and positively correlated with their appetite of operating system.Third,the profit of operating system vendor is positively correlated with the consumer and developer’s appetite of operating system and negatively with their cross-group externalities.%智能手机操作系统市场具有双边市场特征。借鉴双边市场理论,通过建立 Hotelling 模型来研究智能手机操作系统厂商,应用开发商以及消费者之间的关系。研究表明智能手机操作系统厂商的分成比例取决于消费者和开发商的交叉网络外部性;消费者价格和消费者以及开发商的交叉网络外部性负相关,而与两者的偏好程度正相关;操作系统厂商的利润与消费者和开发商的偏好程度正相关,而与两者的交叉网络外部性负相关。

  8. Fabrication of large flat gallium nitride templates with extremely low dislocation densities in the 106 cm-2 range by novel two-side hydride vapor-phase epitaxial growth

    Science.gov (United States)

    Fujikura, Hajime; Konno, Taichiro

    2017-10-01

    Large GaN templates with high flatness (i.e., negligible wafer bowing and smooth as-grown surfaces) and low threading dislocation densities (TTDs) were fabricated by a novel two-side hydride vapor-phase epitaxial (HVPE) growth, beginning with deposition of polycrystalline GaN on the rear side of the wafer. Appropriate gas-flow management realized by our homemade HVPE system permitted the growth of a GaN layer with a smooth as-grown surface and excellent thickness uniformity on the front surfaces of 4- or 6-inch patterned sapphire substrates (PSSs). However, when the grown thickness exceeded 20 μm, single-side HVPE-growth induced fractures in GaN crystals. The fracture resistance of the GaN increased markedly when it was in a cleavage-resistant polycrystalline form (poly-GaN), permitting its growth to a thickness of 100 μm. In the presence of a back-side poly-GaN layer, extremely thick GaN crystal layers could be grown on the front side without fractures. An 80-μm-thick GaN template fabricated by two-side growth on a 4-inch PSS had a device-quality surface, negligible bowing, and low TDD (7 × 106 cm-2). Issues of high fabrication costs, unavailability of large-size wafers, and large off-angle variations associated with native GaN wafers could be overcome by using our high-quality GaN templates as alternative substrates.

  9. [Inotropic agents].

    Science.gov (United States)

    Sasayama, Shigetake

    2003-05-01

    Depression of myocardial contractility plays an important role in the development of heart failure and many inotropic agents were developed to improve the contractile function of the failing heart. Agents that increase cyclic AMP, either by increasing its synthesis or reducing its degradation, exerted dramatic short-term hemodynamic benefits, but these acute effects were not extrapolated into long-term improvement of the clinical outcome of heart failure patients. Administration of these agents to an energy starved failing heart would be expected to increase myocardial energy use and could accelerate disease progression. The role of digitalis in the management of heart failure has been controversial, however, the recent large scale clinical trial has ironically proved that digoxin reduced the rate of hospitalization both overall and for worsening heart failure. More recently, attention was paid to other inotropic agents that have a complex and diversified mechanism. These agents have some phosphodiesterase-inhibitory action but also possess additional effects, including cytokine inhibitors, immunomodulators, or calcium sensitizers. In the Western Societies these agents were again shown to increase mortality of patients with severe heart failure in a dose dependent manner with the long-term administration. However, it may not be the case in the Japanese population in whom mortality is relatively low. Chronic treatment with inotropic agent may be justified in Japanese, as it allows optimal care in the context of relief of symptoms and an improved quality of life. Therefore, each racial group should obtain specific evidence aimed at developing its own guidelines for therapy rather than translating major guidelines developed for other populations.

  10. Matching theory for wireless networks

    CERN Document Server

    Han, Zhu; Saad, Walid

    2017-01-01

    This book provides the fundamental knowledge of the classical matching theory problems. It builds up the bridge between the matching theory and the 5G wireless communication resource allocation problems. The potentials and challenges of implementing the semi-distributive matching theory framework into the wireless resource allocations are analyzed both theoretically and through implementation examples. Academics, researchers, engineers, and so on, who are interested in efficient distributive wireless resource allocation solutions, will find this book to be an exceptional resource. .

  11. Sunscreening Agents

    Science.gov (United States)

    Martis, Jacintha; Shobha, V; Sham Shinde, Rutuja; Bangera, Sudhakar; Krishnankutty, Binny; Bellary, Shantala; Varughese, Sunoj; Rao, Prabhakar; Naveen Kumar, B.R.

    2013-01-01

    The increasing incidence of skin cancers and photodamaging effects caused by ultraviolet radiation has increased the use of sunscreening agents, which have shown beneficial effects in reducing the symptoms and reoccurrence of these problems. Many sunscreen compounds are in use, but their safety and efficacy are still in question. Efficacy is measured through indices, such as sun protection factor, persistent pigment darkening protection factor, and COLIPA guidelines. The United States Food and Drug Administration and European Union have incorporated changes in their guidelines to help consumers select products based on their sun protection factor and protection against ultraviolet radiation, whereas the Indian regulatory agency has not yet issued any special guidance on sunscreening agents, as they are classified under cosmetics. In this article, the authors discuss the pharmacological actions of sunscreening agents as well as the available formulations, their benefits, possible health hazards, safety, challenges, and proper application technique. New technologies and scope for the development of sunscreening agents are also discussed as well as the role of the physician in patient education about the use of these agents. PMID:23320122

  12. Stability, Optimality and Manipulation in Matching Problems with Weighted Preferences

    Directory of Open Access Journals (Sweden)

    Maria Silvia Pini

    2013-11-01

    Full Text Available The stable matching problem (also known as the stable marriage problem is a well-known problem of matching men to women, so that no man and woman, who are not married to each other, both prefer each other. Such a problem has a wide variety of practical applications, ranging from matching resident doctors to hospitals, to matching students to schools or, more generally, to any two-sided market. In the classical stable marriage problem, both men and women express a strict preference order over the members of the other sex, in a qualitative way. Here, we consider stable marriage problems with weighted preferences: each man (resp., woman provides a score for each woman (resp., man. Such problems are more expressive than the classical stable marriage problems. Moreover, in some real-life situations, it is more natural to express scores (to model, for example, profits or costs rather than a qualitative preference ordering. In this context, we define new notions of stability and optimality, and we provide algorithms to find marriages that are stable and/or optimal according to these notions. While expressivity greatly increases by adopting weighted preferences, we show that, in most cases, the desired solutions can be found by adapting existing algorithms for the classical stable marriage problem. We also consider the manipulability properties of the procedures that return such stable marriages. While we know that all procedures are manipulable by modifying the preference lists or by truncating them, here, we consider if manipulation can occur also by just modifying the weights while preserving the ordering and avoiding truncation. It turns out that, by adding weights, in some cases, we may increase the possibility of manipulating, and this cannot be avoided by any reasonable restriction on the weights.

  13. Mobile Agents

    Science.gov (United States)

    Satoh, Ichiro

    Mobile agents are autonomous programs that can travel from computer to computer in a network, at times and to places of their own choosing. The state of the running program is saved, by being transmitted to the destination. The program is resumed at the destination continuing its processing with the saved state. They can provide a convenient, efficient, and robust framework for implementing distributed applications and smart environments for several reasons, including improvements to the latency and bandwidth of client-server applications and reducing vulnerability to network disconnection. In fact, mobile agents have several advantages in the development of various services in smart environments in addition to distributed applications.

  14. Pattern recognition and string matching

    CERN Document Server

    Cheng, Xiuzhen

    2002-01-01

    The research and development of pattern recognition have proven to be of importance in science, technology, and human activity. Many useful concepts and tools from different disciplines have been employed in pattern recognition. Among them is string matching, which receives much theoretical and practical attention. String matching is also an important topic in combinatorial optimization. This book is devoted to recent advances in pattern recognition and string matching. It consists of twenty eight chapters written by different authors, addressing a broad range of topics such as those from classifica­ tion, matching, mining, feature selection, and applications. Each chapter is self-contained, and presents either novel methodological approaches or applications of existing theories and techniques. The aim, intent, and motivation for publishing this book is to pro­ vide a reference tool for the increasing number of readers who depend upon pattern recognition or string matching in some way. This includes student...

  15. Matching conditions in relativistic astrophysics

    CERN Document Server

    Quevedo, Hernando

    2012-01-01

    We present an exact electrovacuum solution of Einstein-Maxwell equations with infinite sets of multipole moments which can be used to describe the exterior gravitational field of a rotating charged mass distribution. We show that in the special case of a slowly rotating and slightly deformed body, the exterior solution can be matched to an interior solution belonging to the Hartle-Thorne family of approximate solutions. To search for exact interior solutions, we propose to use the derivatives of the curvature eigenvalues to formulate a $C^3-$matching condition from which the minimum radius can be derived at which the matching of interior and exterior spacetimes can be carried out. We prove the validity of the $C^3-$matching in the particular case of a static mass with a quadrupole moment. The corresponding interior solution is obtained numerically and the matching with the exterior solution gives as a result the minimum radius of the mass configuration.

  16. Antibiotic Agents

    Science.gov (United States)

    ... agents. A recent survey reported that 76% of liquid soaps from 10 states in the US contained triclosan ... regulated depends upon its intended use and its effectiveness. The US Food and Drug Administration (FDA) regulates antibacterial soaps and antibacterial substances that will either be used ...

  17. Discussion on Development Strategy of Internet Recruitment Market in China Based on Two -sided Markets Theory%基于双边市场视角的我国网络招聘市场发展策略探讨

    Institute of Scientific and Technical Information of China (English)

    赵清斌; 纪汉霖

    2012-01-01

    China's internet recruitment industry developed fast although it started later than western eourtries. There is Great potential in China's in- ternet recruitment market which is in the golden age of its development. At present the enterprises compete fiercely in the market, meanwhile their homogenization is very serious. The intemet recruitment market is a two -sided market made up of job hunter, recruiting website and enterprise us- er in essence. Based on two - sided markets theory, the market pattern and characteristics of internet reernitment platform and enterprise competi- tion behavior were studied. And based on the understanding of current situation and the trend of China's internet recruitment market, we discussed and put forward competitive strategies and suggestions such as pricing, differentiation, entrance and bundling for interuet recruitment market of China so as to provide a new perspective for the research of internet recruiting and provide reference for China's network recruitment platform enterprises formulating business tactics and development strategies.%我国的网络招聘产业虽然起步较晚,但发展较快,中国网络招聘行业市场潜力巨大,正处于高速发展的黄金期,目前市场竞争激烈,同质化严重。网络招聘的产业实质,是一个由求职者、招聘网站和企业用户组成的双边市场。基于双边市场理论,对网络招聘平台的市场形态和特点、网络招聘市场中的企业竞争行为等问题展开研究,在对我国网络招聘市场发展现状和趋势认识的基础上,探讨并提出了定价、差异化、进入、捆绑策略等多方面的网络招聘市场竞争策略和建议,以期为网络招聘的研究提供一个新的视角,并为网络招聘平台企业制定企业策略和发展战略提供参考。

  18. 论海峡两岸刑事管辖的冲突及消解%On the Resolution of Criminal Jurisdiction Conflict between the Two Sides of the Taiwan Straits

    Institute of Scientific and Technical Information of China (English)

    江国华; 赖彦君

    2016-01-01

    The conflict of criminal jurisdiction between the two sides of the Taiwan Straits stem from their legisla⁃tive differences. The conflict caused by such differences result in the two sides ’failure to recognize each other ’s crimi⁃nal judgment and in dual decisions to repatriated criminals. This situation is contrary to the legal principle of prohibition against double jeopardy;it is also a hindrance to the development of the cross-strait judicial cooperation. To resolve this conflict ,it is time to put on the agenda the establishment of a mechanism for joint criminal jurisdiction;the key point is to specify the division of jurisdiction for each side so that both sides will recognize and implement the court ’s criminal de⁃cision of the other side. Thereby ,a coordinated cross-strait judicial system and a benign interaction are expected to be established.%两岸刑事管辖的冲突直接源自于各自立法上的差异。而这种由立法差异所导致的两岸刑事管辖权之冲突,使得海峡两岸互不承认对方法院刑事判决,从而造成罪犯遣返后出现双重判决之情形。如此,既有违禁止双重危险之法治原则,亦有碍两岸司法合作之发展。为解决这种冲突,建构海峡两岸刑事司法合作管辖机制应当提上议事议程,以具体划分两岸管辖权,并相互认可、执行对方法院的刑事判决为重点内容。借此,推动海峡两岸间协作管辖制度的建立,并最终促成两岸司法之良性互动。

  19. Statistical methods for history matching

    DEFF Research Database (Denmark)

    Johansen, Kent

    Denne afhandling beskriver statistiske metoder til history matching af olieproduktion. History matching er en vigtig del af driften af et oliefelt og er ofte forbundet med problemer relateret til kompleksiteten af reservoiret og selve størrelsen af reservoirsimuleringsmodellen. Begrebet history m...... history matching metode. Den foreslåede metode forsøger at forbedre konvergensen af traditionel probability perturbation ved at inkludere kvalitativ gradient information.......Denne afhandling beskriver statistiske metoder til history matching af olieproduktion. History matching er en vigtig del af driften af et oliefelt og er ofte forbundet med problemer relateret til kompleksiteten af reservoiret og selve størrelsen af reservoirsimuleringsmodellen. Begrebet history...... matching dækker over arbejdsprocessen, hvor de fysiske parametre i en reservoirsimuleringsmodel bliver justeret således, at en simulering af olieproduktionen stemmer overens med egentlige målte produktionsdata. Mange history matching metoder er baseret på et geostatistisk fundament, hvilket også gør sig...

  20. Pattern Matching in Multiple Streams

    CERN Document Server

    Clifford, Raphael; Porat, Ely; Sach, Benjamin

    2012-01-01

    We investigate the problem of deterministic pattern matching in multiple streams. In this model, one symbol arrives at a time and is associated with one of s streaming texts. The task at each time step is to report if there is a new match between a fixed pattern of length m and a newly updated stream. As is usual in the streaming context, the goal is to use as little space as possible while still reporting matches quickly. We give almost matching upper and lower space bounds for three distinct pattern matching problems. For exact matching we show that the problem can be solved in constant time per arriving symbol and O(m+s) words of space. For the k-mismatch and k-differences problems we give O(k) time solutions that require O(m+ks) words of space. In all three cases we also give space lower bounds which show our methods are optimal up to a single logarithmic factor. Finally we set out a number of open problems related to this new model for pattern matching.

  1. 49 CFR 173.186 - Matches.

    Science.gov (United States)

    2010-10-01

    ...) Wax “Vesta” matches are matches that can be ignited by friction either on a prepared surface or on a solid surface. (c) Safety matches and wax “Vesta” matches must be tightly packed in securely closed... packaging with any material other than safety matches or wax “Vesta” matches, which must be packed...

  2. A blind matching algorithm for cognitive radio networks

    KAUST Repository

    Hamza, Doha R.

    2016-08-15

    We consider a cognitive radio network where secondary users (SUs) are allowed access time to the spectrum belonging to the primary users (PUs) provided that they relay primary messages. PUs and SUs negotiate over allocations of the secondary power that will be used to relay PU data. We formulate the problem as a generalized assignment market to find an epsilon pairwise stable matching. We propose a distributed blind matching algorithm (BLMA) to produce the pairwise-stable matching plus the associated power allocations. We stipulate a limited information exchange in the network so that agents only calculate their own utilities but no information is available about the utilities of any other users in the network. We establish convergence to epsilon pairwise stable matchings in finite time. Finally we show that our algorithm exhibits a limited degradation in PU utility when compared with the Pareto optimal results attained using perfect information assumptions. © 2016 IEEE.

  3. Radioprotective Agents

    Science.gov (United States)

    1982-01-01

    claimed to be effective are gallic acid derivatives, eg, sodium gallate 12053-21-61 (295-297) and propyl gallate 1121-79-91 (298). p...inhibition of a-adrenergic receptors can be achieved through the use of the antiradiation agents 2-(5-aminopentylamino)ethanephos- phorothioic acid ...tissue was ap- preciated immediately as a potential medical set, and they were put to use en- thusiastically. Early workers did notice an erythematous

  4. Agent Behavior alignment : A mechanism to overcome problems in agent interactions during runtime

    NARCIS (Netherlands)

    Meyer, Gerben G.; Szirbik, Nick B.; Klusch, M; Hindriks, K; Papazoglou, MP; Strerling, L

    2007-01-01

    When two or more agents interacting, their behaviors are not necessarily matching. Automated ways to overcome conflicts in the behavior of agents can make the execution of interactions more reliable. Such an alignment mechanism will reduce the necessary human intervention. This paper shows how to de

  5. Socio-motivational moderators – Two sides of the same coin?Testing the potential buffering role of socio-motivational relationships on achievement drive and test anxiety among German and Canadian secondary school students

    Directory of Open Access Journals (Sweden)

    Frances eHoferichter

    2015-10-01

    Full Text Available The current cross-national study investigates the potential buffering role of socio-motivational relationships for the association of achievement drive and test anxiety in secondary school students from Canada and Germany. One thousand eighty-eight students (54% girls, Mage = 13.71, SD = .53, age span 12–15 years from the state of Brandenburg and 389 students from Quebéc (55.9% girls, Mage = 13.43, SD = .82, age span 12–16 years were asked about their socio-motivational relationships with their teachers and peers, their drive for achievement, and test anxiety. Multigroup latent moderated structural equations (MGLMS were conducted to test for the moderator role of socio-motivational relationships that would buffer feelings of test anxiety related to the drive for achievement. The analyses revealed the two-sided role socio-motivational relationships can have for students with different levels of achievement drive; intensifying or mitigating feelings of test anxiety. Thereby, the results of this study extend the buffering hypothesis by Cohen and Wills (1985. Cross-national differences between Canada and Germany were found concerning the studied moderators on the association of achievement drive and test anxiety: While for German students teacher-student relationships acted as moderator, for Canadian students student-student relationships and teachers acting as positive motivators displayed a moderator role.

  6. 西秦岭北缘-拉脊山两侧地貌差异及地貌演化%TOPOGRAPHIC DIFFERENCE AND MORPHOLOGIC EVOLUTION BETWEEN THE TWO SIDES OF THE NORTHERN MARGIN OF WEST QINLING-LAJISHAN FAULT

    Institute of Scientific and Technical Information of China (English)

    高明星; 徐锡伟; 刘少峰

    2013-01-01

    The northern margin of West Qinling-Lajishan Fault is reckoned as an important geomorphologic and geological boundary.The elevation and local relief differences between the two sides of the boundary are distinct.The aim of this study is to understand the topographic differences and morphologic evolution mechanisms between the eastern and the western side of the northern margin of West Qinling-Lajishan Fault.The digital elevation model combined with geologic data has been used to:1) Extract local relief and swath profiles to quantitatively reveal the topographic characters of the eastern and the western side of the boundary; 2) Make statistics on the elevation modes of the Cenozoic sandstones on both sides of the fault.The results show that the older strata lie at higher elevations in the eastern region of the boundary; And for the west of the boundary,older strata (Paleogene and Neogene)perch on lower elevations,however,the Quaternary strata lie in the lowest elevation.The differential topographic evolution history of the two sides of the boundary indicates the complexity of Cenozoic strata development.Moreover,the lithological combination and sedimentary facies of the Cenozoic strata in the eastern and western side of the northern margin of West QinlingLajishan boundary are summarized,and the denudation and aggradation history of the two sides of the boundary are compared in this study.A longer constant denudation history in the eastern side than the western side has been suggested.The results also indicate the differential tectonic evolution history between the two sides of the boundary.Outward growth of the Tibetan plateau appears in the eastern side.The deformation and uplifting decrease as propagating northeastward.For the western side,the deformation pattern is more complex with different evolution histories of faults under stronger compression.The limited river erosion has enhanced the up-growth of this part of the plateau.%为了解西秦岭北缘-拉脊

  7. Approximate Matching of Hierarchial Data

    DEFF Research Database (Denmark)

    Augsten, Nikolaus

    The goal of this thesis is to design, develop, and evaluate new methods for the approximate matching of hierarchical data represented as labeled trees. In approximate matching scenarios two items should be matched if they are similar. Computing the similarity between labeled trees is hard...... as in addition to the data values also the structure must be considered. A well-known measure for comparing trees is the tree edit distance. It is computationally expensive and leads to a prohibitively high run time. Our solution for the approximate matching of hierarchical data are pq-grams. The pq...... formally proof that the pq-gram index can be incrementally updated based on the log of edit operations without reconstructing intermediate tree versions. The incremental update is independent of the data size and scales to a large number of changes in the data. We introduce windowed pq...

  8. Matched Spectral Filter Imager Project

    Data.gov (United States)

    National Aeronautics and Space Administration — OPTRA proposes the development of an imaging spectrometer for greenhouse gas and volcanic gas imaging based on matched spectral filtering and compressive imaging....

  9. Improved bounds for stochastic matching

    CERN Document Server

    Li, Jian

    2010-01-01

    In this paper we study stochastic matching problems that are motivated by applications in online dating and kidney exchange programs. We consider two probing models: edge probing and matching probing. Our main result is an algorithm that finds a matching-probing strategy attaining a small constant approximation ratio. An interesting aspect of our approach is that we compare the cost our solution to the best edge-probing strategy. Thus, we indirectly show that the best matching-probing strategy is only a constant factor away from the best edge-probing strategy. Even though our algorithm has a slightly worse approximation ratio than a greedy algorithm for edge-probing strategies, we show that the two algorithms can be combined to get improved approximations.

  10. An Efficient Pattern Matching Algorithm

    Science.gov (United States)

    Sleit, Azzam; Almobaideen, Wesam; Baarah, Aladdin H.; Abusitta, Adel H.

    In this study, we present an efficient algorithm for pattern matching based on the combination of hashing and search trees. The proposed solution is classified as an offline algorithm. Although, this study demonstrates the merits of the technique for text matching, it can be utilized for various forms of digital data including images, audio and video. The performance superiority of the proposed solution is validated analytically and experimentally.

  11. Review og pattern matching approaches

    DEFF Research Database (Denmark)

    Manfaat, D.; Duffy, Alex; Lee, B. S.

    1996-01-01

    This paper presents a review of pattern matching techniques. The application areas for pattern matching are extensive, ranging from CAD systems to chemical analysis and from manufacturing to image processing. Published techniques and methods are classified and assessed within the context of three...... key issues: pattern classes, similiarity types and mathing methods. It has been shown that the techniques and approaches are as diverse and varied as the applications....

  12. Trading Agents

    CERN Document Server

    Wellman, Michael

    2011-01-01

    Automated trading in electronic markets is one of the most common and consequential applications of autonomous software agents. Design of effective trading strategies requires thorough understanding of how market mechanisms operate, and appreciation of strategic issues that commonly manifest in trading scenarios. Drawing on research in auction theory and artificial intelligence, this book presents core principles of strategic reasoning that apply to market situations. The author illustrates trading strategy choices through examples of concrete market environments, such as eBay, as well as abst

  13. Fingerprint Matching and Non-Matching Analysis for Different Tolerance Rotation Degrees in Commercial Matching Algorithms

    Directory of Open Access Journals (Sweden)

    A. J. Perez-Diaz

    2010-08-01

    Full Text Available Fingerprint verification is the most important step in the fingerprint-based biometric systems. The matching score islinked to the chance of identifying a person. Nowadays, two fingerprint matching methods are the most popular: thecorrelation-based method and the minutiae-based method. In this work, three biometric systems were evaluated:Neurotechnology Verifinger 6.0 Extended, Innovatrics IDKit SDK and Griaule Fingerprint SDK 2007. The evaluationwas performed according to the experiments of the Fingerprint Verification Competition (FVC. The influence of thefingerprint rotation degrees on false match rate (FMR and false non-match rate (FNMR was evaluated. The resultsshowed that the FMR values increase as rotation degrees increase too, meanwhile, the FNMR values decrease.Experimental results demonstrate that Verifinger SDK shows good performance on false non-match testing, with anFNMR mean of 7%, followed by IDKit SDK (6.71% ~ 13.66% and Fingerprint SDK (50%. However, Fingerprint SDKdemonstrates a better performance on false match testing, with an FMR mean of ~0%, followed by Verifinger SDK(7.62% - 9% and IDKit SDK (above 28%. As result of the experiments, Verifinger SDK had, in general, the bestperformance. Subsequently, we calculated the regression functions to predict the behavior of FNMR and FMR fordifferent threshold values with different rotation degrees.

  14. 下颌不对称后退术后两侧髁突位置变化的比较%Comparison of the Condylar Positional Changes between the Two Sides after Asymmetric Andibular Setback

    Institute of Scientific and Technical Information of China (English)

    王颖; 曲卫国; 丰鑫; 屈振宇

    2013-01-01

    目的:应用锥形束CT(cone-beam computed tomography,CBCT)比较双侧下颌支矢状劈开(SSRO)不对称后退下颌骨(asymmetric mandibular setback,AMS)术后两侧髁突位置的变化.方法:16例下颌偏突颌畸形患者,采用双侧下颌升支矢状劈开截骨术(BSSRO)后退下颌骨,小钛板坚固内固定(rigid internal fixation,RIF),分别于术前(T0)和术后1周(T1)做CBCT检查,利用InVivo dental软件测量双侧髁突的位置及角度变化,采用SPSS Statistics 17.0软件对数据进行统计分析.结果:术前除冠状位髁突头长轴的角度外,两侧髁突各观测指标均无统计学差异,术后1周两侧冠状位髁突颈的角度、轴位两侧髁突头的角度变化、冠状位后退距离小的一侧髁突颈的角度变化、矢状位后退距离大的一侧髁突前后向位置变化有统计学意义,两侧的改变程度仅轴位内外向变化和矢状位前后向变化具有统计学意义.结论:小钛板坚固内固定的SSRO不对称后退下颌骨可能会对两侧髁突产生不同的影响.%Objective:To compare the positional changes of the condylar between greater setback side(GSS) and lesser setback side (LSS) after asymmetric mandibular setback (AMS) using cone beam computed tomography (CBCT).Methods:16 skeletal class Ⅲ malocclusion patients with mandibular prognathism and facial asymmetry,who underwent bilateral sagittal split ramus osteotomy(BSSRO) with miniplate rigid internal fixation,were as sessed by CBCT before surgery(T0) and 1 week after surgery(T1).Results:At T0 stage,all the variables,except for coronal condylar head long axis angle(CHA),showed significant difference.At T1 stage,the coronal condylar neck long axis angle (CNA) showed significantly different between the two sides.The axial condylar head long axis angle(AHA) in both GSS and LSS,the CNA in the lesser setback side and the anteroposterior condylar position (AP) in GSS on the sagittal view showed statistically different from that at T0

  15. 双边截断型分布族参数函数的 渐近最优经验Bayes估计%Asymptotically Optimal Empirical Bayes Estimation for Parameter-functions Of Two-sided Truncation Distribution Families

    Institute of Scientific and Technical Information of China (English)

    张玲霞; 师义民

    2000-01-01

    Consider the two-sided truncation distribution families written in the form f(x|θ)= ω ( θ1, θ2) h (x) I[θ1,θ2] (x), where θ= ( θ1, θ2 ) T (x) = (t1 (x), t2 (x)) = ( min (x1,…, xm ), max (x1,… ,xm)) is a sufficient statistic, its marginal density is denoted by f(t). In this paper, by estimating f(t), we construct the empirical Bayes estimation (EBE) for parameter-function Q(θ), and prove the EBE is an asymptotically optimal that of Q(θ).%本文考虑一维双边截断型分布族参数函数在平方损失下的经验 Bayes 估计问题.给定θ,x的条件分布为 f(x|θ)=ω(θ1,θ2)h(x)I[θ1,θ2](x)dx其中 θ=(θ1,θ2) T(x)=(t1(x),t2(x))=(min(x1,…,xm),max(x1,…,xm))是充分统计量.其边缘密度为f(t),本文通过f(t)的核估计构造出θ的函数的经验 Bayes 估计,并证明在一定的条件下是渐近最优的(a.0.).

  16. 基于双边市场理论的金融超市竞争定价策略研究%Pricing Strategy of Financial Super-market Based on Two-sided Markets

    Institute of Scientific and Technical Information of China (English)

    王镭; 李一军; 张凯

    2014-01-01

    Based on two-sided market, this paper analyzs the pricing competition strategies of financial super-mar-ket under the case of duopoly , and is mainly focused on the price discrimination strategies .The paper builds price discrimination model by which the discriminatory criteria are transaction times on the platform , and analy-zes equilibrium price , equilibrium profit and market shares in two different cases:financial super-market pursues long term maximum profit or short term maximum one .Then we draw the conclusion that price discrimination is good for financial super-markets’ short term profit maximization but not short term or long term profit .So the pa-per suggests financial super-markets should take the strategies of price discrimination in development stage and maturation stage appropriately ,and be within a certain period of time and transactions , so as to get more profit .%基于双边市场理论,重点分析金融超市在双寡头垄断情形下的竞争定价策略。即在在一般定价模型的基础上,构建起加入金融超市双边用户交易次数为歧视标准的价格歧视竞争模型。并且围绕金融超市追求长期利益和短期利益两种不同动机,对采取该策略均衡时最终用户的均衡进入价格、金融超市利润和市场份额进行比较分析。最后,给出金融超市实施价格歧视策略的对策和建议。

  17. Understanding Y haplotype matching probability.

    Science.gov (United States)

    Brenner, Charles H

    2014-01-01

    The Y haplotype population-genetic terrain is better explored from a fresh perspective rather than by analogy with the more familiar autosomal ideas. For haplotype matching probabilities, versus for autosomal matching probabilities, explicit attention to modelling - such as how evolution got us where we are - is much more important while consideration of population frequency is much less so. This paper explores, extends, and explains some of the concepts of "Fundamental problem of forensic mathematics - the evidential strength of a rare haplotype match". That earlier paper presented and validated a "kappa method" formula for the evidential strength when a suspect matches a previously unseen haplotype (such as a Y-haplotype) at the crime scene. Mathematical implications of the kappa method are intuitive and reasonable. Suspicions to the contrary raised in rest on elementary errors. Critical to deriving the kappa method or any sensible evidential calculation is understanding that thinking about haplotype population frequency is a red herring; the pivotal question is one of matching probability. But confusion between the two is unfortunately institutionalized in much of the forensic world. Examples make clear why (matching) probability is not (population) frequency and why uncertainty intervals on matching probabilities are merely confused thinking. Forensic matching calculations should be based on a model, on stipulated premises. The model inevitably only approximates reality, and any error in the results comes only from error in the model, the inexactness of the approximation. Sampling variation does not measure that inexactness and hence is not helpful in explaining evidence and is in fact an impediment. Alternative haplotype matching probability approaches that various authors have considered are reviewed. Some are based on no model and cannot be taken seriously. For the others, some evaluation of the models is discussed. Recent evidence supports the adequacy of

  18. Matching illumination of solid objects.

    Science.gov (United States)

    Pont, Sylvia C; Koenderink, Jan J

    2007-04-01

    The appearance of objects is determined by their surface reflectance and roughness and by the light field. Conversely, human observers might derive properties of the light field from the appearance of objects. The inverse problem has no unique solution, so perceptual interactions between reflectance, roughness, and lightfield are to be expected. In two separate experiments, we tested whether observers are able to match the illumination of spheres under collimated illumination only (matching of illumination direction) and under more or less diffuse illumination (matching of illumination direction and directedness of the beam). We found that observers are quite able to match collimated illumination directions of two rendered Lambertian spheres. Matching of the collimated beam directions of a Lambertian sphere and that of a real object with arbitrary reflectance and roughness properties resulted in similar results for the azimuthal angle, but in higher variance for the polar angle. Translucent objects and a tennis ball were found to be systematic outliers. If the directedness of the beam was also varied, the direction settings showed larger variance for more diffuse illumination. The directedness settings showed an overall quite large variance and, interestingly, interacted with the polar angle settings. We discuss possible photometrical mechanisms behind these effects.

  19. Approximating Graphic TSP by Matchings

    CERN Document Server

    Mömke, Tobias

    2011-01-01

    We present a framework for approximating the metric TSP based on a novel use of matchings. Traditionally, matchings have been used to add edges in order to make a given graph Eulerian, whereas our approach also allows for the removal of certain edges leading to a decreased cost. For the TSP on graphic metrics (graph-TSP), the approach yields a 1.461-approximation algorithm with respect to the Held-Karp lower bound. For graph-TSP restricted to a class of graphs that contains degree three bounded and claw-free graphs, we show that the integrality gap of the Held-Karp relaxation matches the conjectured ratio 4/3. The framework allows for generalizations in a natural way and also leads to a 1.586-approximation algorithm for the traveling salesman path problem on graphic metrics where the start and end vertices are prespecified.

  20. Error-tolerant Tree Matching

    CERN Document Server

    Oflazer, K

    1996-01-01

    This paper presents an efficient algorithm for retrieving from a database of trees, all trees that match a given query tree approximately, that is, within a certain error tolerance. It has natural language processing applications in searching for matches in example-based translation systems, and retrieval from lexical databases containing entries of complex feature structures. The algorithm has been implemented on SparcStations, and for large randomly generated synthetic tree databases (some having tens of thousands of trees) it can associatively search for trees with a small error, in a matter of tenths of a second to few seconds.

  1. Memristor-based pattern matching

    Science.gov (United States)

    Klimo, Martin; Such, Ondrej; Skvarek, Ondrej; Fratrik, Milan

    2014-10-01

    Pattern matching is a machine learning area that requires high-performance hardware. It has been hypothesized that massively parallel designs, which avoid von Neumann architecture, could provide a significant performance boost. Such designs can advantageously use memristive switches. This paper discusses a two-stage design that implements the induced ordered weighted average (IOWA) method for pattern matching. We outline the circuit structure and discuss how a functioning circuit can be achieved using metal oxide devices. We describe our simulations of memristive circuits and illustrate their performance on a vowel classification task.

  2. Rethinking the Match: A Proposal for Modern Match-Making.

    Science.gov (United States)

    Ray, Chris; Bishop, Steven E; Dow, Alan W

    2017-06-27

    Since the 1950s, the National Resident Matching Program, or "the Match," has governed the placement of medical students into residencies. The Match was created to protect students in an era when residency positions outnumbered applicants and hospitals pressured students early in their academic careers to commit to a residency position. Now, however, applicants outnumber positions, applicants are applying to increasing numbers of programs, and the costs of the Match for applicants and programs are high. Meanwhile, medical education is evolving toward a competency-based approach, a U.S. physician shortage is predicted, and some researchers describe a "July effect"-worse clinical outcomes correlated with the mass entry of new residents.Against this background, the authors argue for adopting a more modern, free-market approach to residency match-making that might better suit the needs of applicants, programs, and the public. They propose allowing students who have been identified by their medical schools as having achieved graduation-level competency to apply to residency programs at any point during the year. Residency programs would set their own application timetables and extend offers in an ongoing fashion. Students, counseled by their schools, would accept or decline offers as desired. The authors argue this approach would better support competency-based education while allowing applicants and programs more choice regarding how they engage and adapt within the selection process. The approach's staggered start times for new residents might attenuate the July effect and improve outcomes for patients. Medical students might also enter and thereby complete residency earlier, increasing the physician workforce.

  3. Definition of an Ontology Matching Algorithm for Context Integration in Smart Cities.

    Science.gov (United States)

    Otero-Cerdeira, Lorena; Rodríguez-Martínez, Francisco J; Gómez-Rodríguez, Alma

    2014-12-08

    In this paper we describe a novel proposal in the field of smart cities: using an ontology matching algorithm to guarantee the automatic information exchange between the agents and the smart city. A smart city is composed by different types of agents that behave as producers and/or consumers of the information in the smart city. In our proposal, the data from the context is obtained by sensor and device agents while users interact with the smart city by means of user or system agents. The knowledge of each agent, as well as the smart city's knowledge, is semantically represented using different ontologies. To have an open city, that is fully accessible to any agent and therefore to provide enhanced services to the users, there is the need to ensure a seamless communication between agents and the city, regardless of their inner knowledge representations, i.e., ontologies. To meet this goal we use ontology matching techniques, specifically we have defined a new ontology matching algorithm called OntoPhil to be deployed within a smart city, which has never been done before. OntoPhil was tested on the benchmarks provided by the well known evaluation initiative, Ontology Alignment Evaluation Initiative, and also compared to other matching algorithms, although these algorithms were not specifically designed for smart cities. Additionally, specific tests involving a smart city's ontology and different types of agents were conducted to validate the usefulness of OntoPhil in the smart city environment.

  4. Definition of an Ontology Matching Algorithm for Context Integration in Smart Cities

    Science.gov (United States)

    Otero-Cerdeira, Lorena; Rodríguez-Martínez, Francisco J.; Gómez-Rodríguez, Alma

    2014-01-01

    In this paper we describe a novel proposal in the field of smart cities: using an ontology matching algorithm to guarantee the automatic information exchange between the agents and the smart city. A smart city is composed by different types of agents that behave as producers and/or consumers of the information in the smart city. In our proposal, the data from the context is obtained by sensor and device agents while users interact with the smart city by means of user or system agents. The knowledge of each agent, as well as the smart city's knowledge, is semantically represented using different ontologies. To have an open city, that is fully accessible to any agent and therefore to provide enhanced services to the users, there is the need to ensure a seamless communication between agents and the city, regardless of their inner knowledge representations, i.e., ontologies. To meet this goal we use ontology matching techniques, specifically we have defined a new ontology matching algorithm called OntoPhil to be deployed within a smart city, which has never been done before. OntoPhil was tested on the benchmarks provided by the well known evaluation initiative, Ontology Alignment Evaluation Initiative, and also compared to other matching algorithms, although these algorithms were not specifically designed for smart cities. Additionally, specific tests involving a smart city's ontology and different types of agents were conducted to validate the usefulness of OntoPhil in the smart city environment. PMID:25494353

  5. Definition of an Ontology Matching Algorithm for Context Integration in Smart Cities

    Directory of Open Access Journals (Sweden)

    Lorena Otero-Cerdeira

    2014-12-01

    Full Text Available In this paper we describe a novel proposal in the field of smart cities: using an ontology matching algorithm to guarantee the automatic information exchange between the agents and the smart city. A smart city is composed by different types of agents that behave as producers and/or consumers of the information in the smart city. In our proposal, the data from the context is obtained by sensor and device agents while users interact with the smart city by means of user or system agents. The knowledge of each agent, as well as the smart city’s knowledge, is semantically represented using different ontologies. To have an open city, that is fully accessible to any agent and therefore to provide enhanced services to the users, there is the need to ensure a seamless communication between agents and the city, regardless of their inner knowledge representations, i.e., ontologies. To meet this goal we use ontology matching techniques, specifically we have defined a new ontology matching algorithm called OntoPhil to be deployed within a smart city, which has never been done before. OntoPhil was tested on the benchmarks provided by the well known evaluation initiative, Ontology Alignment Evaluation Initiative, and also compared to other matching algorithms, although these algorithms were not specifically designed for smart cities. Additionally, specific tests involving a smart city’s ontology and different types of agents were conducted to validate the usefulness of OntoPhil in the smart city environment.

  6. Relaxation matching algorithm for moving photogrammetry

    Science.gov (United States)

    Guo, Lei; Liu, Ke; Miao, Yinxiao; Zhu, Jigui

    2015-02-01

    Moving photogrammetry is an application of close range photogrammetry in industrial measurement to realize threedimensional coordinate measurement within large-scale volume. This paper describes an approach of relaxation matching algorithm applicable to moving photogrammetry according to the characteristics of accurate matching result of different measuring images. This method uses neighborhood matching support to improve the matching rate after coarse matching based on epipolar geometry constraint and precise matching using three images. It reflects the overall matching effect of all points, that means when a point is matched correctly, the matching results of those points round it must be correct. So for one point considered, the matching results of points round it are calculated to judge whether its result is correct. Analysis indicates that relaxation matching can eliminate the mismatching effectively and acquire 100% rate of correct matching. It will play a very important role in moving photogrammetry to ensure the following implement of ray bundle adjustment.

  7. Towards optimal packed string matching

    DEFF Research Database (Denmark)

    Ben-Kiki, Oren; Bille, Philip; Breslauer, Dany

    2014-01-01

    In the packed string matching problem, it is assumed that each machine word can accommodate up to α characters, thus an n-character string occupies n/α memory words.(a) We extend the Crochemore–Perrin constant-space O(n)-time string-matching algorithm to run in optimal O(n/α) time and even in real......-time, achieving a factor α speedup over traditional algorithms that examine each character individually. Our macro-level algorithm only uses the standard AC0 instructions of the word-RAM model (i.e. no integer multiplication) plus two specialized micro-level AC0 word-size packed-string instructions. The main word...... matching work.(b) We also consider the complexity of the packed string matching problem in the classical word-RAM model in the absence of the specialized micro-level instructions wssm and wslm. We propose micro-level algorithms for the theoretically efficient emulation using parallel algorithms techniques...

  8. Fuzzy private matching (extended abstract)

    NARCIS (Netherlands)

    Chmielewski, L.; Hoepman, J.H.

    2008-01-01

    In the private matching problem, a client and a server each hold a set of n input elements. The client wants to privately compute the intersection of these two sets: he learns which elements he has in common with the server (and nothing more), while the server gains no information at all. In certain

  9. An Implementation of Bigraph Matching

    DEFF Research Database (Denmark)

    Glenstrup, Arne John; Damgaard, Troels Christoffer; Birkedal, Lars

    We describe a provably sound and complete matching algorithm for bigraphical reactive systems. The algorithm has been implemented in our BPL Tool, a first implementation of bigraphical reactive systems. We describe the tool and present a concrete example of how it can be used to simulate a model...

  10. 基于双边市场的媒体跨媒介竞争效应分析∗%An Analysis on Cross-media Competition Effect in Media Based on Two-sided Markets

    Institute of Scientific and Technical Information of China (English)

    石莉萍

    2015-01-01

    Based on the current background of “Triple Play”and the concept of two-sided markets theo-ry,this essay constructs a media industry cross-media competition model.Model analysis shows that the expansion of cross-media platform would increase the number of consumers,advertisements,and advertis-ing expenses.However,there exists a critical point for cross-media platform expansion investment.The cross-media expansion would increase the profit of media platform only if the investment number is less than the critical point.By the increasing number of advertisement-averse consumer ratio,final equilibrium advertising fees and profits for both media platform will decrease,and the amount of cross-media expansion advertising media platforms and consumers will decrease.Comparatively,the amount of none-cross-media expansion advertisements media platforms and consumers will increase.The conclusion would benefit the cross-media expansion of enterprises and policy-making of the government.%基于三网融合的现实背景,在双边市场理论框架下,构建了媒体跨媒介竞争博弈模型。模型分析表明:媒体平台进行跨媒介扩张,可以增加自身消费者数量、广告投放数量以及广告费用;媒体平台跨媒介扩张存在一个投资临界,只有当投资成本小于这一临界时,跨媒介扩张才会增加媒体平台的利润;随着广告厌恶型消费者所占比例的增加,两家媒体平台最终的均衡广告收费和利润都会提升,进行跨媒介扩张的媒体平台广告量和消费者数量会减少,而没有进行跨媒介扩张的媒体平台广告量和消费者数量会增加。

  11. A method for distinguishing WW and NW in the flow around two side by side circular cylinders%并列双圆柱绕流中宽窄尾流的识别方法

    Institute of Scientific and Technical Information of China (English)

    庞建华; 宗智; 周力; 邹丽

    2016-01-01

    采用基于边界瞬时涡量守恒(IVCBC)的纯拉格朗日涡方法,结合并列双圆柱的结构特点,建立双圆柱绕流数值计算模型。在间隙率T/D=1.1~2.6时,并列双圆柱绕流会出现宽尾流(WW)和窄尾流(NW)现象。利用两圆柱间隙中心点的诱导速度方向与间隙流的偏转方向同步的特性,提出一种区别宽、窄尾流的数值计算方法;比较间隙流的偏转方向与该间隙中点的速度偏转方向,并进行典型的算例分析。结果表明:该方法能准确区别宽尾流和窄尾流,可为数值研究这一特殊区域的流体特征提供重要的数值计算方法。%A pure-Lagrangian vortex method, based on Instantaneous Vorticity Conserved Boundary Condi⁃tions (IVCBC), is adopted to build the numerical calculation model of flow around double circular cylinders that have the same structure characteristics of two side by side circular cylinders. The Wide Wake(WW) and Narrow Wake(NW)appear in the range of pitch ratio T/D=1.1~2.6. A scheme is proposed to distin⁃guish the NW and WW through the direction synchronism between induced velocity at the middle of double circular cylinders and deflection of gap flow. By comparing the directions of the above two flowing condi⁃tions and analyzing the classic case, it is concluded that the proposed method could distinguish WW and NW accurately, which offers an important numerical calculation method for investigating the flow character⁃istics in this range.

  12. 以“供给侧”为重点推进粮食“两侧”结构改革的思考%On Promoting the Grain "Two Sides" Structural Reform Focused on the "Supply-side"

    Institute of Scientific and Technical Information of China (English)

    丁声俊

    2016-01-01

    推进“供给侧”结构性改革是一个重大的经济学理论和实践问题。在我国粮食领域存在着粮食品种产销结构、供需结构失衡问题。粮食“供给侧”是基础,“需求侧”是目标,二者存在相互依存、相互制约、相互促进的关系。根据对我国粮食宏观形势作出的客观评估,应以“五大发展新理念”为引领,坚守粮食总量安全、质量安全、农民增收、市场稳定“四条底线”,以粮食“供给侧”结构改革为主线,推动粮食“供给侧”与“需求侧”结构改革同步发力,促进粮食“两侧”结构相互协调与适应。%To promote the "supply-side structural reform" is a major economic theory and practical problems. In China′s grain field, the structural imbalance problems of the grain species can be seen in the process of production-marketing and supply-demand. Grain supply-side is the basis while the demand-side is the goal, both of them are mutual dependent, mutual restraint, and mutual promote. According to the objective assessment of China′s grain macro situation, we should take"the five new major development con⁃cepts" as the guiding principle, adhering to the" the four bottom lines" of the grain industry, such as adequate volume, safe quality, increased income and stable market. Take the grain "supply-side" structural reform as a main line to promote the grain supply-side and demand-side structural reform synchronously, making the "two sides" structure of mutual coordination and adaptation.

  13. Matching of equivalent field regions

    DEFF Research Database (Denmark)

    Appel-Hansen, Jørgen; Rengarajan, S.B.

    2005-01-01

    screen, having the same homogeneous medium on both sides and an impressed current on one aide, an alternative procedure is relevant. We make use of the fact that in the aperture the tangential component of the magnetic field due to the induced currents in the screen is zero. The use of such a procedure......In aperture problems, integral equations for equivalent currents are often found by enforcing matching of equivalent fields. The enforcement is made in the aperture surface region adjoining the two volumes on each side of the aperture. In the case of an aperture in a planar perfectly conducting...... shows that equivalent currents can be found by a consideration of only one of the two volumes into which the aperture plane divides the space. Furthermore, from a consideration of an automatic matching at the aperture, additional information about tangential as well as normal field components...

  14. Impedance-matched Marx generators

    Directory of Open Access Journals (Sweden)

    W. A. Stygar

    2017-04-01

    Full Text Available We have conceived a new class of prime-power sources for pulsed-power accelerators: impedance-matched Marx generators (IMGs. The fundamental building block of an IMG is a brick, which consists of two capacitors connected electrically in series with a single switch. An IMG comprises a single stage or several stages distributed axially and connected in series. Each stage is powered by a single brick or several bricks distributed azimuthally within the stage and connected in parallel. The stages of a multistage IMG drive an impedance-matched coaxial transmission line with a conical center conductor. When the stages are triggered sequentially to launch a coherent traveling wave along the coaxial line, the IMG achieves electromagnetic-power amplification by triggered emission of radiation. Hence a multistage IMG is a pulsed-power analogue of a laser. To illustrate the IMG approach to prime power, we have developed conceptual designs of two ten-stage IMGs with LC time constants on the order of 100 ns. One design includes 20 bricks per stage, and delivers a peak electrical power of 1.05 TW to a matched-impedance 1.22-Ω load. The design generates 113 kV per stage and has a maximum energy efficiency of 89%. The other design includes a single brick per stage, delivers 68 GW to a matched-impedance 19-Ω load, generates 113 kV per stage, and has a maximum energy efficiency of 90%. For a given electrical-power-output time history, an IMG is less expensive and slightly more efficient than a linear transformer driver, since an IMG does not use ferromagnetic cores.

  15. Template Matching on Parallel Architectures,

    Science.gov (United States)

    1985-07-01

    memory. The processors run asynchronously. Thus according to Hynn’s categories the Butterfl . is a MIMD machine. The processors of the Butterfly are...Generalized Butterfly Architecture This section describes timings for pattern matching on the generalized Butterfl .. Ihe implementations on the Butterfly...these algorithms. Thus the best implementation of the techniques on the generalized Butterfl % are the same as the implementation on the real Butterfly

  16. Monetary Exchange with Multilateral Matching

    DEFF Research Database (Denmark)

    Julien, Benoît; Kennes, John; King, Ian

    the results with Kiyotaki and Wright (1993), Trejos and Wright (1995), and Lagos and Wright (2005) respectively. We find that the multilateral matching setting generates very simple and intuitive equilibrium allocations that are similar to those in the other papers, but which have important differences....... Finally, analysis of the case of divisible goods and money can be performed without the assumption of large families (as in Shi (1997)) or the day and night structure of Lagos and Wright (2005)....

  17. Duplicate-based Schema Matching

    OpenAIRE

    Bilke, Alexander

    2007-01-01

    Die Integration unabhängig voneinander entwickelter Datenquellen stellt uns vor viele Probleme, die das Ergebnis verschiedener Arten von Heterogenität sind. Eine der größten Herausforderungen ist Schema Matching: der halb-automatische Prozess, in dem semantische Beziehungen zwischen Attributen in heterogenen Schemata erkannt werden. Verschiedene Lösungen, die Schemainformationen ausnutzen oder spezifische Eigenschaften aus Attributwerten extrahieren, wurden in der Literatur beschrieben. In di...

  18. Spurring Innovation with Matching Grants

    OpenAIRE

    2015-01-01

    Matching grants are one of the most common tools used in private sector development programs in developing countries and have been included in more than 60 World Bank projects totaling over US$1.2 billion, funding over 100,000 micro, small and medium enterprises. The Enterprise Revitalization and Employment Pilot (EREP) was designed as a two year pilot project aimed at improving firm capab...

  19. On String Matching with Mismatches

    Directory of Open Access Journals (Sweden)

    Marius Nicolae

    2015-05-01

    Full Text Available In this paper, we consider several variants of the pattern matching with mismatches problem. In particular, given a text \\(T=t_1 t_2\\cdots t_n\\ and a pattern \\(P=p_1p_2\\cdots p_m\\, we investigate the following problems: (1 pattern matching with mismatches: for every \\(i, 1\\leq i \\leq n-m+1\\ output, the distance between \\(P\\ and \\(t_i t_{i+1}\\cdots t_{i+m-1}\\; and (2 pattern matching with \\(k\\ mismatches: output those positions \\(i\\ where the distance between \\(P\\ and \\(t_i t_{i+1}\\cdots t_{i+m-1}\\ is less than a given threshold \\(k\\. The distance metric used is the Hamming distance. We present some novel algorithms and techniques for solving these problems. We offer deterministic, randomized and approximation algorithms. We consider variants of these problems where there could be wild cards in either the text or the pattern or both. We also present an experimental evaluation of these algorithms. The source code is available at http://www.engr.uconn.edu/\\(\\sim\\man09004/kmis.zip.

  20. Incremental pattern matching for regular expressions

    NARCIS (Netherlands)

    Jalali, Arash; Ghamarian, Amir Hossein; Rensink, Arend; Fish, Andrew; Lambers, Leen

    2012-01-01

    Graph pattern matching lies at the heart of any graph transformation-based system. Incremental pattern matching is one approach proposed for reducingthe overall cost of pattern matching over successive transformations by preserving the matches that stay relevant after a rule application. An importan

  1. 32 CFR 806b.50 - Computer matching.

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 6 2010-07-01 2010-07-01 false Computer matching. 806b.50 Section 806b.50... PROGRAM Disclosing Records to Third Parties § 806b.50 Computer matching. Computer matching programs... on forms used in applying for benefits. Coordinate computer matching statements on forms with...

  2. 双边市场视角下操作系统平台定价策略研究%Pricing Strategies of Operating System Platform from the Perspective of Two-Sided Markets

    Institute of Scientific and Technical Information of China (English)

    邢明青

    2015-01-01

    越来越多有影响力开源操作系统平台的兴起(如 Linux ),对传统的专有操作系统平台(如微软的Windows)形成巨大的冲击。本文借用双边市场理论框架探讨专有操作系统平台在面对开源操作系统平台竞争时的定价策略问题。主要结论如下:①专有操作系统平台对平台用户收费和向应用软件开发商补贴的定价结构是由平台用户和应用软件开发商之间两类交叉网络外部性相对强弱决定的;②用户使用开源操作系统平台相对于专有操作系统平台需承担的额外费用(如较高的学习成本和维护费用)和获得的额外好处(如可个性化和较好的稳定性)均会间接影响专有操作系统平台的定价策略;③与专有操作系统平台独占市场的情形对比发现,两种市场结构下专有操作系统平台的定价结构可能存在差异,并且这种差异依赖于平台用户使用开源操作系统平台与使用专有操作系统平台相比额外需承担费用和额外获得好处的差距。%The emergence of more and more influential open-source operating system platforms ( such as Linux ) tremendously impacts the traditional proprietary operating system platforms ( such as Microsoft ’ s Windows ) . Based on two-sided markets framework, this paper studies the pricing strategies of proprietary platform in the face of competition from open-source platforms.It finds that the proprietary platform’ s pricing structure of charging users and subsiding for application software developers is decided by the relative strength of cross network exter-nalities between users and application software products, the additional costs ( such as higher learning and maintenance costs)and benefits(such as individuation and better stability)when users use open-source platform relative to proprietary platform will indirectly affect proprietary platform’ s pricing strategies, and proprietary plat-form’ s

  3. MOBILE AGENT: EMERGING TECHNOLOGY

    OpenAIRE

    RAJGURU P. V. DR. DESHMUKH S. D

    2011-01-01

    Mobile agent technology has been promoted as an emerging technology that makes it much easier to design, implement, and maintain distributed systems, introduction to basic concepts of mobile agents like agent mobility, agent types and places and agent communication. Then benefits of the usage of mobile agents are summarized and illustrated by selected applications. The next section lists requirements and desirable properties for mobile agent languages and systems. We study the main features, ...

  4. Matching polytopes and Specht modules

    CERN Document Server

    Liu, Ricky Ini

    2009-01-01

    We prove that the dimension of the Specht module of a forest $G$ is the same as the normalized volume of the matching polytope of $G$. We also associate to $G$ a symmetric function $s_G$ (analogous to the Schur symmetric function $s_\\lambda$ for a partition $\\lambda$) and investigate its combinatorial and representation-theoretic properties in relation to the Specht module and Schur module of $G$. We then use this to define notions of standard and semistandard tableaux for forests.

  5. A multi agent model for the limit order book dynamics

    NARCIS (Netherlands)

    Bartolozzi, M.

    2010-01-01

    In the present work we introduce a novel multi-agent model with the aim to reproduce the dynamics of a double auction market at microscopic time scale through a faithful simulation of the matching mechanics in the limit order book.aEuro (c) The agents follow a noise decision making process where the

  6. Hybrid Schema Matching for Deep Web

    Science.gov (United States)

    Chen, Kerui; Zuo, Wanli; He, Fengling; Chen, Yongheng

    Schema matching is the process of identifying semantic mappings, or correspondences, between two or more schemas. Schema matching is a first step and critical part of data integration. For schema matching of deep web, most researches only interested in query interface, while rarely pay attention to abundant schema information contained in query result pages. This paper proposed a mixed schema matching technique, which combines attributes that appeared in query structures and query results of different data sources, and mines the matched schemas inside. Experimental results prove the effectiveness of this method for improving the accuracy of schema matching.

  7. Riot Control Agents

    Science.gov (United States)

    ... Submit What's this? Submit Button Facts About Riot Control Agents Interim document Recommend on Facebook Tweet Share Compartir FACT SHEET What riot control agents are Riot control agents (sometimes referred to ...

  8. Interacting agents in finance

    NARCIS (Netherlands)

    C. Hommes

    2008-01-01

    Interacting agents in finance represent a behavioural, agent-based approach in which financial markets are viewed as complex adaptive systems consisting of many boundedly rational agents interacting through simple heterogeneous investment strategies, constantly adapting their behaviour in response t

  9. Interacting agents in finance

    NARCIS (Netherlands)

    Hommes, C.; Durlauf, S.N.; Blume, L.E.

    2008-01-01

    Interacting agents in finance represent a behavioural, agent-based approach in which financial markets are viewed as complex adaptive systems consisting of many boundedly rational agents interacting through simple heterogeneous investment strategies, constantly adapting their behaviour in response

  10. Reducing the likelihood of long tennis matches.

    Science.gov (United States)

    Barnett, Tristan; Alan, Brown; Pollard, Graham

    2006-01-01

    Long matches can cause problems for tournaments. For example, the starting times of subsequent matches can be substantially delayed causing inconvenience to players, spectators, officials and television scheduling. They can even be seen as unfair in the tournament setting when the winner of a very long match, who may have negative aftereffects from such a match, plays the winner of an average or shorter length match in the next round. Long matches can also lead to injuries to the participating players. One factor that can lead to long matches is the use of the advantage set as the fifth set, as in the Australian Open, the French Open and Wimbledon. Another factor is long rallies and a greater than average number of points per game. This tends to occur more frequently on the slower surfaces such as at the French Open. The mathematical method of generating functions is used to show that the likelihood of long matches can be substantially reduced by using the tiebreak game in the fifth set, or more effectively by using a new type of game, the 50-40 game, throughout the match. Key PointsThe cumulant generating function has nice properties for calculating the parameters of distributions in a tennis matchA final tiebreaker set reduces the length of matches as currently being used in the US OpenA new 50-40 game reduces the length of matches whilst maintaining comparable probabilities for the better player to win the match.

  11. Monetary Exchange with Multilateral Matching

    DEFF Research Database (Denmark)

    Julien, Benoît; Kennes, John; King, Ian

    . In particular, surplus maximization can be achieved in this setting, in equilibrium, with a positive money supply. Moreover, with flexible prices and directed search, the first best allocation can be attained through price posting or through auctions with lotteries, but not through auctions without lotteries......This paper analyzes monetary exchange in a search model allowing for multilateral matches to be formed, according to a standard urn-ballprocess. We consider three physical environments: indivisible goods and money, divisible goods and indivisible money, and divisible goods and money. We compare....... Finally, analysis of the case of divisible goods and money can be performed without the assumption of large families (as in Shi (1997)) or the day and night structure of Lagos and Wright (2005)....

  12. Matching conditions on capillary ripples

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez, Aresky H.; Marin Antuna, J.; Rodriguez Coppola, H. [Universidad de La Habana, La Habana (Cuba)

    2001-12-01

    The physics of the oscillatory motion in the interface between two immiscible viscous fluids is presented based on a detailed analysis of the matching conditions. These conditions are almost completely derived from the dynamical equations of the system. This unusual approach in graduated courses in hydrodynamics, is proposed as an alternative. The role of viscosity in the modes of oscillation of the interface is also clearly shown. [Spanish] Se explica la fisica de las oscilaciones de la interfase de dos fluidos viscosos no miscibles a partir del analisis detallado de las condiciones de empalme que se derivan casi completamente del sistema de ecuaciones dinamicas que lo rigen. Ese enfoque, no habitual en los cursos de doctorado de esta materia, se propone como alternativa para estos cursos. Se explica tambien de forma clara el posible papel de la viscosidad en los modos de oscilacion de la interfase.

  13. Making Palm Print Matching Mobile

    CERN Document Server

    Fang, Li; Chian, Cheng Shao

    2009-01-01

    With the growing importance of personal identification and authentication in todays highly advanced world where most business and personal tasks are being replaced by electronic means, the need for a technology that is able to uniquely identify an individual and has high fraud resistance see the rise of biometric technologies. Making biometric based solution mobile is a promising trend. A new RST invariant square based palm print ROI extraction method was successfully implemented and integrated into the current application suite. A new set of palm print image database captured using embedded cameras in mobile phone was created to test its robustness. Comparing to those extraction methods that are based on boundary tracking of the overall hand shape that has limitation of being unable to process palm print images that has one or more fingers closed, the system can now effectively handle the segmentation of palm print images with varying finger positioning. The high flexibility makes palm print matching mobile ...

  14. Genetic Programming Framework for Fingerprint Matching

    CERN Document Server

    Ismail, Ismail A; Abd-ElWahid, Mohammed A; ElKafrawy, Passent M; Nasef, Mohammed M

    2009-01-01

    A fingerprint matching is a very difficult problem. Minutiae based matching is the most popular and widely used technique for fingerprint matching. The minutiae points considered in automatic identification systems are based normally on termination and bifurcation points. In this paper we propose a new technique for fingerprint matching using minutiae points and genetic programming. The goal of this paper is extracting the mathematical formula that defines the minutiae points.

  15. Sample evaluation of ontology-matching systems

    NARCIS (Netherlands)

    Hage, W.R. van; Isaac, A.; Aleksovski, Z.

    2007-01-01

    Ontology matching exists to solve practical problems. Hence, methodologies to find and evaluate solutions for ontology matching should be centered on practical problems. In this paper we propose two statistically-founded evaluation techniques to assess ontology-matching performance that are based on

  16. Sample evaluation of ontology-matching systems

    NARCIS (Netherlands)

    Hage, W.R. van; Isaac, A.; Aleksovski, Z.

    2007-01-01

    Ontology matching exists to solve practical problems. Hence, methodologies to find and evaluate solutions for ontology matching should be centered on practical problems. In this paper we propose two statistically-founded evaluation techniques to assess ontology-matching performance that are based on

  17. DEFICIENT CUBIC SPLINES WITH AVERAGE SLOPE MATCHING

    Institute of Scientific and Technical Information of China (English)

    V. B. Das; A. Kumar

    2005-01-01

    We obtain a deficient cubic spline function which matches the functions with certain area matching over a greater mesh intervals, and also provides a greater flexibility in replacing area matching as interpolation. We also study their convergence properties to the interpolating functions.

  18. Fast and compact regular expression matching

    DEFF Research Database (Denmark)

    Bille, Philip; Farach-Colton, Martin

    2008-01-01

    We study 4 problems in string matching, namely, regular expression matching, approximate regular expression matching, string edit distance, and subsequence indexing, on a standard word RAM model of computation that allows logarithmic-sized words to be manipulated in constant time. We show how...

  19. 24 CFR 92.221 - Match credit.

    Science.gov (United States)

    2010-04-01

    ... 24 Housing and Urban Development 1 2010-04-01 2010-04-01 false Match credit. 92.221 Section 92.221... INVESTMENT PARTNERSHIPS PROGRAM Program Requirements Matching Contribution Requirement § 92.221 Match credit. (a) When credit is given. Contributions are credited on a fiscal year basis at the time the...

  20. Connections between the matching and chromatic polynomials

    Directory of Open Access Journals (Sweden)

    E. J. Farrell

    1992-01-01

    Full Text Available The main results established are (i a connection between the matching and chromatic polynomials and (ii a formula for the matching polynomial of a general complement of a subgraph of a graph. Some deductions on matching and chromatic equivalence and uniqueness are made.

  1. Concerns on Monotonic Imbalance Bounding Matching Methods

    OpenAIRE

    Yatracos, Yannis G.

    2013-01-01

    Concerns are expressed for the Monotonic Imbalance Bounding (MIB) property (Iacus et al. 2011) and for MIB matching because i) the definition of the MIB property leads to inconsistencies and the nature of the imbalance measure is not clearly defined, ii) MIB property does not generalize Equal Percent Bias Reducing (EPBR) property, iii) MIB matching does not provide statistical information available with EPBR matching.

  2. 13 CFR 130.450 - Matching funds.

    Science.gov (United States)

    2010-01-01

    ... in the budget proposal. Cash sources shall be identified by name and account. All applicants must... received by the SBDC during the budget period, as long as the total Cash Match provided by the SBDC is 50... to the total amount of SBA funding. At least 50% of the Matching Funds must be Cash Match....

  3. 13 CFR 102.40 - Computer matching.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Computer matching. 102.40 Section... Protection of Privacy and Access to Individual Records Under the Privacy Act of 1974 § 102.40 Computer matching. The OCIO will enforce the computer matching provisions of the Privacy Act. The FOI/PA Office...

  4. 39 CFR 266.10 - Computer matching.

    Science.gov (United States)

    2010-07-01

    ... 39 Postal Service 1 2010-07-01 2010-07-01 false Computer matching. 266.10 Section 266.10 Postal... Computer matching. (a) General. Any agency or Postal Service component that wishes to use records from a... records must submit its proposal to the Postal Service Manager Records Office. Computer matching...

  5. Matching network for RF plasma source

    Science.gov (United States)

    Pickard, Daniel S.; Leung, Ka-Ngo

    2007-11-20

    A compact matching network couples an RF power supply to an RF antenna in a plasma generator. The simple and compact impedance matching network matches the plasma load to the impedance of a coaxial transmission line and the output impedance of an RF amplifier at radio frequencies. The matching network is formed of a resonantly tuned circuit formed of a variable capacitor and an inductor in a series resonance configuration, and a ferrite core transformer coupled to the resonantly tuned circuit. This matching network is compact enough to fit in existing compact focused ion beam systems.

  6. Image matching navigation based on fuzzy information

    Institute of Scientific and Technical Information of China (English)

    田玉龙; 吴伟仁; 田金文; 柳健

    2003-01-01

    In conventional image matching methods, the image matching process is mostly based on image statistic information. One aspect neglected by all these methods is that there is much fuzzy information contained in these images. A new fuzzy matching algorithm based on fuzzy similarity for navigation is presented in this paper. Because the fuzzy theory is of the ability of making good description of the fuzzy information contained in images, the image matching method based on fuzzy similarity would look forward to producing good performance results. Experimental results using matching algorithm based on fuzzy information also demonstrate its reliability and practicability.

  7. Biological warfare agents.

    Science.gov (United States)

    Pohanka, Miroslav; Kuca, Kamil

    2010-01-01

    Biological warfare agents are a group of pathogens and toxins of biological origin that can be potentially misused for military or criminal purposes. The present review attempts to summarize necessary knowledge about biological warfare agents. The historical aspects, examples of applications of these agents such as anthrax letters, biological weapons impact, a summary of biological warfare agents and epidemiology of infections are described. The last section tries to estimate future trends in research on biological warfare agents.

  8. Extremal Matching Energy of Complements of Trees

    Directory of Open Access Journals (Sweden)

    Wu Tingzeng

    2016-08-01

    Full Text Available Gutman and Wagner proposed the concept of the matching energy which is defined as the sum of the absolute values of the zeros of the matching polynomial of a graph. And they pointed out that the chemical applications of matching energy go back to the 1970s. Let T be a tree with n vertices. In this paper, we characterize the trees whose complements have the maximal, second-maximal and minimal matching energy. Furthermore, we determine the trees with edge-independence number p whose complements have the minimum matching energy for p = 1, 2, . . . , [n/2]. When we restrict our consideration to all trees with a perfect matching, we determine the trees whose complements have the second-maximal matching energy.

  9. Matching roots to their environment.

    Science.gov (United States)

    White, Philip J; George, Timothy S; Gregory, Peter J; Bengough, A Glyn; Hallett, Paul D; McKenzie, Blair M

    2013-07-01

    Plants form the base of the terrestrial food chain and provide medicines, fuel, fibre and industrial materials to humans. Vascular land plants rely on their roots to acquire the water and mineral elements necessary for their survival in nature or their yield and nutritional quality in agriculture. Major biogeochemical fluxes of all elements occur through plant roots, and the roots of agricultural crops have a significant role to play in soil sustainability, carbon sequestration, reducing emissions of greenhouse gasses, and in preventing the eutrophication of water bodies associated with the application of mineral fertilizers. This article provides the context for a Special Issue of Annals of Botany on 'Matching Roots to Their Environment'. It first examines how land plants and their roots evolved, describes how the ecology of roots and their rhizospheres contributes to the acquisition of soil resources, and discusses the influence of plant roots on biogeochemical cycles. It then describes the role of roots in overcoming the constraints to crop production imposed by hostile or infertile soils, illustrates root phenotypes that improve the acquisition of mineral elements and water, and discusses high-throughput methods to screen for these traits in the laboratory, glasshouse and field. Finally, it considers whether knowledge of adaptations improving the acquisition of resources in natural environments can be used to develop root systems for sustainable agriculture in the future.

  10. Towards Robust Image Matching Algorithms

    Science.gov (United States)

    Parsons, Timothy J.

    1984-12-01

    The rapid advance in digital electronics during recent years has enabled the real-time hardware implementation of many basic image processing techniques and these methods are finding increasing use in both commercial and military applications where a superiority to existing systems can be demonstrated. The potential superiority of an entirely passive, automatic image processing based navigation system over the less accurate and active navigation systems based on radar, for example "TERCOM", is evident. By placing a sensor on board an aircraft or missile together with the appropriate processing power and enough memory to store a reference image or a map of the planned route, large scale features extracted from the scene available to the sensor can be compared with the same feature stored in memory. The difference between the aircraft's actual position and its desired position can then be evaluated and the appropriate navigational correction undertaken. This paper summaries work carried out at British Aerospace Hatfield to investigate various classes of algorithms and solutions which would render a robust image matching system viable for such an automatic system flying at low level with a thermal I.R. sensor.

  11. Orthogonal Matching Pursuit with Replacement

    CERN Document Server

    Jain, Prateek; Dhillon, Inderjit S

    2011-01-01

    In this paper, we consider the problem of compressed sensing where the goal is to recover almost all the sparse vectors using a small number of fixed linear measurements. For this problem, we propose a novel partial hard-thresholding operator that leads to a general family of iterative algorithms. While one extreme of the family yields well known hard thresholding algorithms like ITI (Iterative Thresholding with Inversion) and HTP (Hard Thresholding Pursuit), the other end of the spectrum leads to a novel algorithm that we call Orthogonal Matching Pursuit with Replacement (OMPR). OMPR, like the classic greedy algorithm OMP, adds exactly one coordinate to the support at each iteration, based on the correlation with the current residual. However, unlike OMP, OMPR also removes one coordinate from the support. This simple change allows us to prove that OMPR has the best known guarantees for sparse recovery in terms of the Restricted Isometry Property (a condition on the measurement matrix). In contrast, OMP is kn...

  12. Maximum Matchings via Glauber Dynamics

    CERN Document Server

    Jindal, Anant; Pal, Manjish

    2011-01-01

    In this paper we study the classic problem of computing a maximum cardinality matching in general graphs $G = (V, E)$. The best known algorithm for this problem till date runs in $O(m \\sqrt{n})$ time due to Micali and Vazirani \\cite{MV80}. Even for general bipartite graphs this is the best known running time (the algorithm of Karp and Hopcroft \\cite{HK73} also achieves this bound). For regular bipartite graphs one can achieve an $O(m)$ time algorithm which, following a series of papers, has been recently improved to $O(n \\log n)$ by Goel, Kapralov and Khanna (STOC 2010) \\cite{GKK10}. In this paper we present a randomized algorithm based on the Markov Chain Monte Carlo paradigm which runs in $O(m \\log^2 n)$ time, thereby obtaining a significant improvement over \\cite{MV80}. We use a Markov chain similar to the \\emph{hard-core model} for Glauber Dynamics with \\emph{fugacity} parameter $\\lambda$, which is used to sample independent sets in a graph from the Gibbs Distribution \\cite{V99}, to design a faster algori...

  13. Holography and Conformal Anomaly Matching

    CERN Document Server

    Cabo-Bizet, Alejandro; Narain, K S

    2013-01-01

    We discuss various issues related to the understanding of the conformal anomaly matching in CFT from the dual holographic viewpoint. First, we act with a PBH diffeomorphism on a generic 5D RG flow geometry and show that the corresponding on-shell bulk action reproduces the Wess-Zumino term for the dilaton of broken conformal symmetry, with the expected coefficient aUV-aIR. Then we consider a specific 3D example of RG flow whose UV asymptotics is normalizable and admits a 6D lifting. We promote a modulus \\rho appearing in the geometry to a function of boundary coordinates. In a 6D description {\\rho} is the scale of an SU(2) instanton. We determine the smooth deformed background up to second order in the space-time derivatives of \\rho and find that the 3D on-shell action reproduces a boundary kinetic term for the massless field \\tau= log(\\rho) with the correct coefficient \\delta c=cUV-cIR. We further analyze the linearized fluctuations around the deformed background geometry and compute the one-point functions ...

  14. Voice Matching Using Genetic Algorithm

    Directory of Open Access Journals (Sweden)

    Abhishek Bal

    2014-03-01

    Full Text Available In this paper, the use of Genetic Algorithm (GA for voice recognition is described. The practical application of Genetic Algorithm (GA to the solution of engineering problem is a rapidly emerging approach in the field of control engineering and signal processing. Genetic algorithms are useful for searching a space in multi-directional way from large spaces and poorly defined space. Voice is a signal of infinite information. Digital processing of voice signal is very important for automatic voice recognition technology. Nowadays, voice processing is very much important in security mechanism due to mimicry characteristic. So studying the voice feature extraction in voice processing is very necessary in military, hospital, telephone system, investigation bureau and etc. In order to extract valuable information from the voice signal, make decisions on the process, and obtain results, the data needs to be manipulated and analyzed. In this paper, if the instant voice is not matched with same person’s reference voices in the database, then Genetic Algorithm (GA is applied between two randomly chosen reference voices. Again the instant voice is compared with the result of Genetic Algorithm (GA which is used, including its three main steps: selection, crossover and mutation. We illustrate our approach with different sample of voices from human in our institution.

  15. Impedance matching at arterial bifurcations.

    Science.gov (United States)

    Brown, N

    1993-01-01

    Reflections of pulse waves will occur in arterial bifurcations unless the impedance is matched continuously through changing geometric and elastic properties. A theoretical model is presented which minimizes pulse wave reflection through bifurcations. The model accounts for the observed linear changes in area within the bifurcation, generalizes the theory to asymmetrical bifurcations, characterizes changes in elastic properties from parent to daughter arteries, and assesses the effect of branch angle on the mechanical properties of daughter vessels. In contradistinction to previous models, reflections cannot be minimized without changes in elastic properties through bifurcations. The theoretical model predicts that in bifurcations with area ratios (beta) less than 1.0 Young's moduli of daughter vessels may be less than that in the parent vessel if the Womersley parameter alpha in the parent vessel is less than 5. Larger area ratios in bifurcations are accompanied by greater increases in Young's moduli of branches. For an idealized symmetric aortic bifurcation (alpha = 10) with branching angles theta = 30 degrees (opening angle 60 degrees) Young's modulus of common iliac arteries relative to that of the distal abdominal aorta has an increase of 1.05, 1.68 and 2.25 for area ratio of 0.8, 1.0 and 1.15, respectively. These predictions are consistent with the observed increases in Young's moduli of peripheral vessels.(ABSTRACT TRUNCATED AT 250 WORDS)

  16. Explicit pattern matching assignment algorithm

    Science.gov (United States)

    Levedahl, Mark

    2002-08-01

    Sharing data between two tracking systems frequently involves use of an object map: the transmitting system sends a frame of data with multiple observations, and the receiving system uses an assignment algorithm to correlate the information with its local observation data base. The usual prescription for this problem is an optimal assignment algorithm (such as JVC or auction) using a cost matrix based upon chi-squared distances between the local and remote observation data. The optimal assignment algorithm does not actually perform pattern matching, so this approach is not robust to large registration errors between the two systems when there exist differences in the number of observations held by both systems. Performance of a new assignment algorithm that uses a cost function including terms for both registration errors and track to track random errors is presented: the cost function explicitly includes a bias between the two observation sets and thus provides a maximum likelihood solution to the assignment problem. In practice, this assignment approach provides near perfect assignment accuracy in cases where the bias errors exceed the dimension of the transmitted object map and there exist mismatches in the numbers of observations made by the two systems. This performance extends to many cases where the optimal assignment algorithm methodology produces errors nearly 100% of the time. The paper includes the theoretical foundation of the assignment problem solved and comparison of achieved accuracy with existing optimal assignment approaches.

  17. 交叉网络外部性还是单向网络外部性?——传媒业内的双边市场辨析%Cross-Product Network Externalities or Unilateral Network Externalities: Analysis of Two-Sided-Market in Media Industry

    Institute of Scientific and Technical Information of China (English)

    张辉锋

    2012-01-01

    This paper mainly discusses whether media industry has two-sided-market or not. It focuses on two categories which are mostly similar to two-sided-market: one is Internet advertising alliance, copyright exchange base, content products trade fair, etc., the other is the press and broadcasting markets. It finds that the former belongs to two-sided-market while the latter does not since there is no cross-product network externalities between advertiser and audience. It also argues that the former should refer to the pricing strategy of two-sided-market and there is no need for the latter to take care of the influence of the pricing strategy on audiences.%本论文利用双边市场理论对传媒业进行辨析,以厘清传媒业中是否存在双边市场。辨析主要集中在与双边市场最贴近的两类,一是互联网广告联盟、版权交易基地、内容产品展销会等,一是报刊广电等传媒。结论是前者属于双边市场,后者由于广告主与受众两边市场不存在交叉网络外部性而不是。论文还指出,前者的定价应多借鉴双边市场定价策略的相关内容,而后者对广告主的定价可不考虑对受众的影响。

  18. Best Practices for NPT Transit Matching

    Energy Technology Data Exchange (ETDEWEB)

    Gilligan, Kimberly V. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Whitaker, J. Michael [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Oakberg, John A. [Tetra Tech, Inc., Oak Ridge, TN (United States); Snow, Catherine [Sno Consulting, LLC, Sandy, UT (United States)

    2016-09-01

    Transit matching is the process for relating or matching reports of shipments and receipts submitted to the International Atomic Energy Agency (IAEA). Transit matching is a component used by the IAEA in drawing safeguards conclusions and performing investigative analysis. Transit matching is part of IAEA safeguards activities and the State evaluation process, and it is included in the annual Safeguards Implementation Report (SIR). Annually, the IAEA currently receives reports of ~900,000 nuclear material transactions, of which ~500,000 are for domestic and foreign transfers. Of these the IAEA software can automatically match (i.e., machine match) about 95% of the domestic transfers and 25% of the foreign transfers. Given the increasing demands upon IAEA resources, it is highly desirable for the machine-matching process to match as many transfers as possible. Researchers at Oak Ridge National Laboratory (ORNL) have conducted an investigation funded by the National Nuclear Security Administration through the Next Generation Safeguards Initiative to identify opportunities to strengthen IAEA transit matching. Successful matching, and more specifically machine matching, is contingent on quality data from the reporting States. In February 2016, ORNL hosted representatives from three States, the IAEA, and Euratom to share results from past studies and to discuss the processes, policies, and procedures associated with State reporting for transit matching. Drawing on each entity s experience and knowledge, ORNL developed a best practices document to be shared with the international safeguards community to strengthen transit matching. This paper shares the recommendations that resulted from this strategic meeting and the next steps being taken to strengthen transit matching.

  19. Best Practices for NPT Transit Matching

    Energy Technology Data Exchange (ETDEWEB)

    Gilligan, Kimberly V. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Whitaker, J. Michael [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Oakberg, John A. [Tetra Tech, Inc., Oak Ridge, TN (United States); Snow, Catherine [Sno Consulting, LLC, Sandy, UT (United States)

    2016-09-01

    Transit matching is the process for relating or matching reports of shipments and receipts submitted to the International Atomic Energy Agency (IAEA). Transit matching is a component used by the IAEA in drawing safeguards conclusions and performing investigative analysis. Transit matching is part of IAEA safeguards activities and the State evaluation process, and it is included in the annual Safeguards Implementation Report (SIR). Annually, the IAEA currently receives reports of ~900,000 nuclear material transactions, of which ~500,000 are for domestic and foreign transfers. Of these the IAEA software can automatically match (i.e., machine match) about 95% of the domestic transfers and 25% of the foreign transfers. Given the increasing demands upon IAEA resources, it is highly desirable for the machine-matching process to match as many transfers as possible. Researchers at Oak Ridge National Laboratory (ORNL) have conducted an investigation funded by the National Nuclear Security Administration through the Next Generation Safeguards Initiative to identify opportunities to strengthen IAEA transit matching. Successful matching, and more specifically machine matching, is contingent on quality data from the reporting States. In February 2016, ORNL hosted representatives from three States, the IAEA, and Euratom to share results from past studies and to discuss the processes, policies, and procedures associated with State reporting for transit matching. Drawing on each entity's experience and knowledge, ORNL developed a best practices document to be shared with the international safeguards community to strengthen transit matching. This paper shares the recommendations that resulted from this strategic meeting and the next steps being taken to strengthen transit matching.

  20. Stability of the bipartite matching model

    CERN Document Server

    Bušić, Ana; Mairesse, Jean

    2010-01-01

    We consider the bipartite matching model of customers and servers introduced by Caldentey, Kaplan, and Weiss (Adv. Appl. Probab., 2009). Customers and servers play symmetrical roles. There is a finite set C resp. S, of customer, resp. server, classes. Time is discrete and at each time step, one customer and one server arrive in the system according to a joint probability measure on CxS, independently of the past. Also, at each time step, pairs of matched customer and server, if they exist, depart from the system. Authorized matchings are given by a fixed bipartite graph. A matching policy is chosen, which decides how to match when there are several possibilities. Customers/servers that cannot be matched are stored in a buffer. The evolution of the model can be described by a discrete time Markov chain. We study its stability under various admissible matching policies including: ML (Match the Longest), MS (Match the Shortest), FIFO (match the oldest), priorities. There exist natural necessary conditions for st...

  1. Fractional Order Element Based Impedance Matching

    KAUST Repository

    Radwan, Ahmed Gomaa

    2014-06-24

    Disclosed are various embodiments of methods and systems related to fractional order element based impedance matching. In one embodiment, a method includes aligning a traditional Smith chart (|.alpha.|=1) with a fractional order Smith chart (|.alpha.|.noteq.1). A load impedance is located on the traditional Smith chart and projected onto the fractional order Smith chart. A fractional order matching element is determined by transitioning along a matching circle of the fractional order Smith chart based at least in part upon characteristic line impedance. In another embodiment, a system includes a fractional order impedance matching application executed in a computing device. The fractional order impedance matching application includes logic that obtains a first set of Smith chart coordinates at a first order, determines a second set of Smith chart coordinates at a second order, and determines a fractional order matching element from the second set of Smith chart coordinates.

  2. The match between horse and rider

    OpenAIRE

    Axel-Nilsson, Malin

    2015-01-01

    A successful relationship between horse and rider is a partnership based on compatibility and is often referred to as a good match. In the present thesis, ‘match’ includes the good interaction, interplay and cooperation between horse and rider as well as the related positive experience. A good horse-rider match is important for horse welfare, rider safety and good performance. The aim of this thesis was to investigate which parameters riders consider important for a good match, if horse tempe...

  3. Lazy AC-Pattern Matching for Rewriting

    OpenAIRE

    Walid Belkhir; Alain Giorgetti

    2012-01-01

    We define a lazy pattern-matching mechanism modulo associativity and commutativity. The solutions of a pattern-matching problem are stored in a lazy list composed of a first substitution at the head and a non-evaluated object that encodes the remaining computations. We integrate the lazy AC-matching in a strategy language: rewriting rule and strategy application produce a lazy list of terms.

  4. Improving the Nephrology Match: the Path Forward.

    Science.gov (United States)

    Hsu, Chi-yuan; Parker, Mark G; Ross, Michael J; Schmidt, Rebecca J; Harris, Raymond C

    2015-11-01

    The Fellowship Match process was designed to provide applicants and program directors with an opportunity to consider all their options before making decisions about post-residency training. In a Match, applicants can choose the programs that best suit their career goals, and program directors can consider all candidates before preparing a rank order list. The Match is a contract, requiring obligations of both programs and applicants to achieve success, ensure uniformity, and standardize participation.

  5. Lazy AC-Pattern Matching for Rewriting

    Directory of Open Access Journals (Sweden)

    Walid Belkhir

    2012-04-01

    Full Text Available We define a lazy pattern-matching mechanism modulo associativity and commutativity. The solutions of a pattern-matching problem are stored in a lazy list composed of a first substitution at the head and a non-evaluated object that encodes the remaining computations. We integrate the lazy AC-matching in a strategy language: rewriting rule and strategy application produce a lazy list of terms.

  6. Parikh Matching in the Streaming Model

    DEFF Research Database (Denmark)

    Lee, Lap-Kei; Lewenstein, Moshe; Zhang, Qin

    2012-01-01

    |-length count vector. In the streaming model one seeks space-efficient algorithms for problems in which there is one pass over the data. We consider Parikh matching in the streaming model. To make this viable we search for substrings whose Parikh-mappings approximately match the input vector. In this paper we...... present upper and lower bounds on the problem of approximate Parikh matching in the streaming model....

  7. Matching Two-dimensional Gel Electrophoresis' Spots

    DEFF Research Database (Denmark)

    Dos Anjos, António; AL-Tam, Faroq; Shahbazkia, Hamid Reza

    2012-01-01

    This paper describes an approach for matching Two-Dimensional Electrophoresis (2-DE) gels' spots, involving the use of image registration. The number of false positive matches produced by the proposed approach is small, when compared to academic and commercial state-of-the-art approaches. This ar......This paper describes an approach for matching Two-Dimensional Electrophoresis (2-DE) gels' spots, involving the use of image registration. The number of false positive matches produced by the proposed approach is small, when compared to academic and commercial state-of-the-art approaches...

  8. PUMA: The Positional Update and Matching Algorithm

    Science.gov (United States)

    Line, J. L. B.; Webster, R. L.; Pindor, B.; Mitchell, D. A.; Trott, C. M.

    2017-01-01

    We present new software to cross-match low-frequency radio catalogues: the Positional Update and Matching Algorithm. The Positional Update and Matching Algorithm combines a positional Bayesian probabilistic approach with spectral matching criteria, allowing for confusing sources in the matching process. We go on to create a radio sky model using Positional Update and Matching Algorithm based on the Murchison Widefield Array Commissioning Survey, and are able to automatically cross-match 98.5% of sources. Using the characteristics of this sky model, we create simple simulated mock catalogues on which to test the Positional Update and Matching Algorithm, and find that Positional Update and Matching Algorithm can reliably find the correct spectral indices of sources, along with being able to recover ionospheric offsets. Finally, we use this sky model to calibrate and remove foreground sources from simulated interferometric data, generated using OSKAR (the Oxford University visibility generator). We demonstrate that there is a substantial improvement in foreground source removal when using higher frequency and higher resolution source positions, even when correcting positions by an average of 0.3 arcmin given a synthesised beam-width of 2.3 arcmin.

  9. REDUCING THE LIKELIHOOD OF LONG TENNIS MATCHES

    Directory of Open Access Journals (Sweden)

    Tristan Barnett

    2006-12-01

    Full Text Available Long matches can cause problems for tournaments. For example, the starting times of subsequent matches can be substantially delayed causing inconvenience to players, spectators, officials and television scheduling. They can even be seen as unfair in the tournament setting when the winner of a very long match, who may have negative aftereffects from such a match, plays the winner of an average or shorter length match in the next round. Long matches can also lead to injuries to the participating players. One factor that can lead to long matches is the use of the advantage set as the fifth set, as in the Australian Open, the French Open and Wimbledon. Another factor is long rallies and a greater than average number of points per game. This tends to occur more frequently on the slower surfaces such as at the French Open. The mathematical method of generating functions is used to show that the likelihood of long matches can be substantially reduced by using the tiebreak game in the fifth set, or more effectively by using a new type of game, the 50-40 game, throughout the match

  10. Highly Scalable Matching Pursuit Signal Decomposition Algorithm

    Data.gov (United States)

    National Aeronautics and Space Administration — In this research, we propose a variant of the classical Matching Pursuit Decomposition (MPD) algorithm with significantly improved scalability and computational...

  11. Infectious Agents and Cancer

    African Journals Online (AJOL)

    these agents on subsequent risk of cancer. There are currently ... tween genetic and environmental factors (that include infectious agents) .... opment of gastric adenocarcinoma and gastric lym- phoma. However .... Lung cancer i. Skin cancers ...

  12. 78 FR 73195 - Privacy Act of 1974: CMS Computer Matching Program Match No. 2013-01; HHS Computer Matching...

    Science.gov (United States)

    2013-12-05

    ... HUMAN SERVICES Centers for Medicare & Medicaid Services Privacy Act of 1974: CMS Computer Matching... & Medicaid Services (CMS), Department of Health and Human Services (HHS). ACTION: Notice of Computer Matching... amended, this notice announces the renewal of a CMP that CMS plans to conduct with the Purchased Care...

  13. The concept of the marginally matched subject in propensity-score matched analyses.

    Science.gov (United States)

    Austin, Peter C; Lee, Douglas S

    2009-06-01

    Propensity-score matching is increasingly being used to reduce the impact of treatment-selection bias when estimating causal treatment effects using observational data. Matching on the propensity score creates sets of treated and untreated subjects who have a similar distribution of baseline covariates. Propensity-score matching frequently relies upon calipers, such that matched treated and untreated subjects must have propensity scores that lie within a specified caliper distance of each other. We define the 'marginally matched' subject as a subject who would be matched using the specified caliper width, but who would not have been matched had calipers with a narrower width been employed. Using patients hospitalized with an acute myocardial infarction (or heart attack) and with exposure to a statin prescription at discharge, we demonstrate that the inclusion of marginally matched subjects can have both a quantitative and qualitative impact upon the estimated treatment effect. Furthermore, marginally matched treated subjects can differ from marginally matched untreated subjects to a substantially greater degree than the differences between non-marginally matched treated and untreated subjects in the propensity-score matched sample. The concept of the marginally matched subject can be used as a sensitivity analysis to examine the impact of the matching method on the estimates of treatment effectiveness.

  14. Animal Capture Agents

    Science.gov (United States)

    1990-01-01

    agents and delivery systems reviewed . Questionnaires were sent to 137 Air Force bases to obtain information about the chemical agents and delivery systems...used by animal control personnel. A literature review included chemical agents, delivery methods, toxicity information and emergency procedures from...34-like agent. Users should familiarize themselves with catatonia in general and particularly that its successful use as an immobilizer doesn’t necessarily

  15. Reasoning about emotional agents

    NARCIS (Netherlands)

    Meyer, J.-J.

    2008-01-01

    In this paper we discuss the role of emotions in artificial agent design, and the use of logic in reasoning about the emotional or affective states an agent can reside in. We do so by extending the KARO framework for reasoning about rational agents appropriately. In particular we formalize in this f

  16. Intelligent Agents: A Primer.

    Science.gov (United States)

    Yu, Edmund; Feldman, Susan

    1999-01-01

    Provides an in-depth introduction to the various technologies that are bringing intelligent agents into the forefront of information technology, explaining how such agents work, the standards involved, and how agent-based applications can be developed. (Author/AEF)

  17. Users, Bystanders and Agents

    DEFF Research Database (Denmark)

    Krummheuer, Antonia Lina

    2015-01-01

    Human-agent interaction (HAI), especially in the field of embodied conversational agents (ECA), is mainly construed as dyadic communication between a human user and a virtual agent. This is despite the fact that many application scenarios for future ECAs involve the presence of others. This paper...

  18. Culturally Aware Agent Communication

    DEFF Research Database (Denmark)

    Rehm, Matthias; Nakano, Yukiko; Koda, Tomoko

    2012-01-01

    Agent based interaction in the form of Embodied Conversational Agents (ECAs) has matured over the last decade and agents have become more and more sophisticated in terms of their verbal and nonverbal behavior like facial expressions or gestures. Having such “natural” communication channels...

  19. SEMI-GLOBAL MATCHING IN OBJECT SPACE

    Directory of Open Access Journals (Sweden)

    F. Bethmann

    2015-03-01

    Full Text Available Semi-Global Matching (SGM is a widespread algorithm for image matching which is used for very different applications, ranging from real-time applications (e.g. for generating 3D data for driver assistance systems to aerial image matching. Originally developed for stereo-image matching, several extensions have been proposed to use more than two images within the matching process (multi-baseline matching, multi-view stereo. These extensions still perform the image matching in (rectified stereo images and combine the pairwise results afterwards to create the final solution. This paper proposes an alternative approach which is suitable for the introduction of an arbitrary number of images into the matching process and utilizes image matching by using non-rectified images. The new method differs from the original SGM method mainly in two aspects: Firstly, the cost calculation is formulated in object space within a dense voxel raster by using the grey (or colour values of all images instead of pairwise cost calculation in image space. Secondly, the semi-global (path-wise minimization process is transferred into object space as well, so that the result of semi-global optimization leads to index maps (instead of disparity maps which directly indicate the 3D positions of the best matches. Altogether, this yields to an essential simplification of the matching process compared to multi-view stereo (MVS approaches. After a description of the new method, results achieved from two different datasets (close-range and aerial are presented and discussed.

  20. Object-based connectedness facilitates matching

    NARCIS (Netherlands)

    Koning, A.R.; Lier, R.J. van

    2003-01-01

    In two matching tasks, participants had to match two images of object pairs. Image-based (113) connectedness refers to connectedness between the objects in an image. Object-based (OB) connectedness refers to connectedness between the interpreted objects. In Experiment 1, a monocular depth cue

  1. 13 CFR 108.2030 - Matching requirements.

    Science.gov (United States)

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Matching requirements. 108.2030 Section 108.2030 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION NEW MARKETS VENTURE CAPITAL... SSBICs § 108.2030 Matching requirements. (a) General. All Operational Assistance grant funds SBA awards...

  2. String matching with variable length gaps

    DEFF Research Database (Denmark)

    Bille, Philip; Gørtz, Inge Li; Vildhøj, Hjalte Wedel

    2012-01-01

    We consider string matching with variable length gaps. Given a string T and a pattern P consisting of strings separated by variable length gaps (arbitrary strings of length in a specified range), the problem is to find all ending positions of substrings in T that match P. This problem is a basic...

  3. Partial fingerprint matching based on SIFT Features

    Directory of Open Access Journals (Sweden)

    Ms. S.Malathi,

    2010-07-01

    Full Text Available Fingerprints are being extensively used for person identification in a number of commercial, civil, and forensic applications. The current Fingerprint matching technology is quite mature for matching full prints, matching partial fingerprints still needs lots of improvement. Most of the current fingerprint identification systems utilize features that are based on minutiae points and ridge patterns. The major challenges faced in partial fingerprint matching are the absence of sufficient minutiae features and other structures such as core and delta. However, this technology suffers from the problem of handling incomplete prints and often discards any partial fingerprints obtained. Recent research has begun to delve into the problems of latent or partial fingerprints. In this paper we present a novel approach for partial fingerprint matching scheme based on SIFT(Scale Invariant Feature Transform features and matching is achieved using a modified point matching process. Using Neurotechnology database, we demonstrate that the proposed method exhibits an improved performance when matching full print against partial print.

  4. Second Order Mode Selective Phase-Matching

    DEFF Research Database (Denmark)

    Lassen, Mikael Østergaard; Delaubert, Vincent; Bachor, Hans. A-

    2006-01-01

    We exploit second order (χ(2)) nonlinear optical phase matching for the selection of individual high order transverse modes. The ratio between the generated components can be adjusted continuously via changes in the phase-matching condition. ©2007 Optical Society of America...

  5. 28 CFR 33.21 - Match.

    Science.gov (United States)

    2010-07-01

    ... 28 Judicial Administration 1 2010-07-01 2010-07-01 false Match. 33.21 Section 33.21 Judicial Administration DEPARTMENT OF JUSTICE BUREAU OF JUSTICE ASSISTANCE GRANT PROGRAMS Criminal Justice Block Grants Allocation of Funds § 33.21 Match. (a) Funds may be used to pay up to 50 percent of the cost of a program...

  6. Dynamic Matchings in Convex Bipartite Graphs

    DEFF Research Database (Denmark)

    Brodal, Gerth Stølting; Georgiadis, Loukas; Hansen, Kristoffer Arnsfelt

    2007-01-01

    We consider the problem of maintaining a maximum matching in a convex bipartite graph G = (V,E) under a set of update operations which includes insertions and deletions of vertices and edges. It is not hard to show that it is impossible to maintain an explicit representation of a maximum matching...

  7. Monkeys Match and Tally Quantities across Senses

    Science.gov (United States)

    Jordan, Kerry E.; MacLean, Evan L.; Brannon, Elizabeth M.

    2008-01-01

    We report here that monkeys can actively match the number of sounds they hear to the number of shapes they see and present the first evidence that monkeys sum over sounds and sights. In Experiment 1, two monkeys were trained to choose a simultaneous array of 1-9 squares that numerically matched a sample sequence of shapes or sounds. Monkeys…

  8. Why do Worker-Firm Matches Dissolve?

    NARCIS (Netherlands)

    Gielen, A. C.; van Ours, J.C.

    2006-01-01

    In a dynamic labor market worker-firm matches dissolve frequently causing workers to separate and firms to look for replacements.A separation may be initiated by the worker (a quit) or the firm (a layoff), or may result from a joint decision.A dissolution of a worker-firm match may be ineffcient if

  9. Pattern Matching, Searching, and Heuristics in Algebra.

    Science.gov (United States)

    Lopez, Antonio M.

    1996-01-01

    Presents a methodology designed to strengthen the cognitive effects of using graphing calculators to solve polynomial equations using pattern matching, searching, and heuristics. Discusses pattern matching as a problem-solving strategy useful in the physical, social, political, and economic worlds of today's students. (DDR)

  10. Active impedance matching of complex structural systems

    Science.gov (United States)

    Macmartin, Douglas G.; Miller, David W.; Hall, Steven R.

    1991-01-01

    Viewgraphs on active impedance matching of complex structural systems are presented. Topics covered include: traveling wave model; dereverberated mobility model; computation of dereverberated mobility; control problem: optimal impedance matching; H2 optimal solution; statistical energy analysis (SEA) solution; experimental transfer functions; interferometer actuator and sensor locations; active strut configurations; power dual variables; dereverberation of complex structure; dereverberated transfer function; compensators; and relative power flow.

  11. Equilibrium and matching under price controls

    NARCIS (Netherlands)

    Herings, P.J.J.

    2015-01-01

    The paper considers a one-to-one matching with contracts model in the presence of price controls. This set-up contains two important streams in the matching literature, those with and those without monetary transfers, as special cases and allows for intermediate cases with some restrictions on the m

  12. Agent Architecture and Collaboration for Supply Chain Management

    Institute of Scientific and Technical Information of China (English)

    GAO Lin; WANG Runxiao; SHENG Yijun; HU Zhiqing

    2006-01-01

    Recently multi-agent system (MAS) is regarded as a powerful paradigm to develop and simulate complex system. Because supply chain (SC) is a complex network, it is hard to improve supply chain management (SCM) efficiency and automate SC operating process. Researchers have applied MAS in SCM viewing enterprises in SC as different functional agents collaborating to achieve common goal. In this paper a MAS-based supply chain management framework (MSF) is developed on which agents can collaborate to conduct business activities of enterprises and customers. Six kinds of functional agents are designed, namely, management agent, order receiving agent, order decomposing agent, resource agent, manufacturing-controlling agent and transportation agent. Through the agents' collaboration the MSF can support SC dynamic forming and operating process. For partner selection the method to transmit customers' order into demand matrix, and transmit enterprise's resource capacity into resource matrix is described in detail. The MSF users decide which algorithm to be applied in matching the two matrixes, and algorithms are stored in model base. Finally the generic agent architecture is put forward.

  13. Fast approximate quadratic programming for graph matching.

    Directory of Open Access Journals (Sweden)

    Joshua T Vogelstein

    Full Text Available Quadratic assignment problems arise in a wide variety of domains, spanning operations research, graph theory, computer vision, and neuroscience, to name a few. The graph matching problem is a special case of the quadratic assignment problem, and graph matching is increasingly important as graph-valued data is becoming more prominent. With the aim of efficiently and accurately matching the large graphs common in big data, we present our graph matching algorithm, the Fast Approximate Quadratic assignment algorithm. We empirically demonstrate that our algorithm is faster and achieves a lower objective value on over 80% of the QAPLIB benchmark library, compared with the previous state-of-the-art. Applying our algorithm to our motivating example, matching C. elegans connectomes (brain-graphs, we find that it efficiently achieves performance.

  14. Fast approximate quadratic programming for graph matching.

    Science.gov (United States)

    Vogelstein, Joshua T; Conroy, John M; Lyzinski, Vince; Podrazik, Louis J; Kratzer, Steven G; Harley, Eric T; Fishkind, Donniell E; Vogelstein, R Jacob; Priebe, Carey E

    2015-01-01

    Quadratic assignment problems arise in a wide variety of domains, spanning operations research, graph theory, computer vision, and neuroscience, to name a few. The graph matching problem is a special case of the quadratic assignment problem, and graph matching is increasingly important as graph-valued data is becoming more prominent. With the aim of efficiently and accurately matching the large graphs common in big data, we present our graph matching algorithm, the Fast Approximate Quadratic assignment algorithm. We empirically demonstrate that our algorithm is faster and achieves a lower objective value on over 80% of the QAPLIB benchmark library, compared with the previous state-of-the-art. Applying our algorithm to our motivating example, matching C. elegans connectomes (brain-graphs), we find that it efficiently achieves performance.

  15. Minutiae matching using local pattern features

    Science.gov (United States)

    Jędryka, Marcin; Wawrzyniak, Zbigniew

    2008-01-01

    This paper concerns algorithms related to analysis of fingerprint images in area of minutiae matching. Proposed solutions make use of information about minutiae detected from a fingerprint as well as information about main first order singularities. The use of first order singularities as a reference point makes algorithm of minutiae matching more efficient and faster in execution. Proposed algorithms concern efficient detection of main singularity in a fingerprint as well as optimization of minutiae matching in polar coordinates using main singularity as a reference point. Minutiae matching algorithm is based on string matching using Levenstein distance. Detection of first order singularities is optimized using Poincare's index and analysis of directional image of a fingerprint. Proposed solutions showed to be efficient and fast in practical use. Implemented algorithms were tested on previously prepared fingerprint datasets.

  16. PUMA: The Positional Update and Matching Algorithm

    CERN Document Server

    Line, J L B; Pindor, B; Mitchell, D A; Trott, C M

    2016-01-01

    We present new software to cross-match low-frequency radio catalogues: the Positional Update and Matching Algorithm (PUMA). PUMA combines a positional Bayesian probabilistic approach with spectral matching criteria, allowing for confusing sources in the matching process. We go on to create a radio sky model using PUMA based on the Murchison Widefield Array Commissioning Survey, and are able to automatically cross-match 98.5% of sources. Using the characteristics of this sky model, we create simple simulated mock catalogues on which to test PUMA, and find that PUMA can reliably find the correct spectral indices of sources, along with being able to recover ionospheric offsets. Finally, we use this sky model to calibrate and remove foreground sources from simulated interferometric data, generated using OSKAR (the Oxford University visibility generator). We demonstrate that there is a substantial improvement in foreground source removal when using higher frequency and higher resolution source positions, even when...

  17. Matching Parasitic Antenna for Single RF MIMO

    DEFF Research Database (Denmark)

    Han, Bo; Kalis, A; Nielsen, Rasmus Hjorth

    2012-01-01

    Single RF MIMO communication emerges a novel low cost communication method which does not consume as much power as the conventional MIMO. The implementation of such single RF MIMO system is done by mapping the weighting factors to the polarizations or the radiation patterns of the antennas....... In order to have such performance, an antenna with rich pattern modes is required by the system, thus the ESPAR antenna is investigated. The critical part on such antenna is parasitic element impedance matching. Unlike the conventional smith-chart matching method which assumes the minimal resistance...... is zero and with goal of 50 ohm or 75 ohm matching, matching on such parasitic antenna will adopt negative value as well. This paper presents a matching network with controllable impedance even to the range of negative values....

  18. Moral actor, selfish agent.

    Science.gov (United States)

    Frimer, Jeremy A; Schaefer, Nicola K; Oakes, Harrison

    2014-05-01

    People are motivated to behave selfishly while appearing moral. This tension gives rise to 2 divergently motivated selves. The actor-the watched self-tends to be moral; the agent-the self as executor-tends to be selfish. Three studies present direct evidence of the actor's and agent's distinct motives. To recruit the self-as-actor, we asked people to rate the importance of various goals. To recruit the self-as-agent, we asked people to describe their goals verbally. In Study 1, actors claimed their goals were equally about helping the self and others (viz., moral); agents claimed their goals were primarily about helping the self (viz., selfish). This disparity was evident in both individualist and collectivist cultures, attesting to the universality of the selfish agent. Study 2 compared actors' and agents' motives to those of people role-playing highly prosocial or selfish exemplars. In content (Study 2a) and in the impressions they made on an outside observer (Study 2b), actors' motives were similar to those of the prosocial role-players, whereas agents' motives were similar to those of the selfish role-players. Study 3 accounted for the difference between the actor and agent: Participants claimed that their agent's motives were the more realistic and that their actor's motives were the more idealistic. The selfish agent/moral actor duality may account for why implicit and explicit measures of the same construct diverge, and why feeling watched brings out the better angels of human nature.

  19. RETIRED MATCHES AMONG MALE PROFESSIONAL TENNIS PLAYERS

    Directory of Open Access Journals (Sweden)

    Kristijan Breznik

    2012-06-01

    Full Text Available The aim of this study was to explore the effect of characteristics of various games and players on the proportion of retired tennis matches in the Open Era of tennis. The data included over 420,000 matches played among 17,553 tennis players in the period from 1968 to the end of 2010. The influence of the surface type was clearly confirmed, with the proportion of retired matches being higher on hard and clay courts compared to grass and carpet surfaces. Similarly, more retired matches were observed in outdoor venues than in indoor ones. The impact of other variables, tournament types, rounds at which the game was played and both players' ranks, is more ambiguous. Our interpretation of the obtained results is presented in the paper. Network analytic methods were applied to extract players with the most retired matches in their careers. Eventually, we defined a group of top tennis players and gave a more precise insight into retired matches in that group. Correspondence analysis was used to visually display the two-mode network of top players and the proportion of retired matches by surface type

  20. Robust Face Image Matching under Illumination Variations

    Directory of Open Access Journals (Sweden)

    Yang Chyuan-Huei Thomas

    2004-01-01

    Full Text Available Face image matching is an essential step for face recognition and face verification. It is difficult to achieve robust face matching under various image acquisition conditions. In this paper, a novel face image matching algorithm robust against illumination variations is proposed. The proposed image matching algorithm is motivated by the characteristics of high image gradient along the face contours. We define a new consistency measure as the inner product between two normalized gradient vectors at the corresponding locations in two images. The normalized gradient is obtained by dividing the computed gradient vector by the corresponding locally maximal gradient magnitude. Then we compute the average consistency measures for all pairs of the corresponding face contour pixels to be the robust matching measure between two face images. To alleviate the problem due to shadow and intensity saturation, we introduce an intensity weighting function for each individual consistency measure to form a weighted average of the consistency measure. This robust consistency measure is further extended to integrate multiple face images of the same person captured under different illumination conditions, thus making our robust face matching algorithm. Experimental results of applying the proposed face image matching algorithm on some well-known face datasets are given in comparison with some existing face recognition methods. The results show that the proposed algorithm consistently outperforms other methods and achieves higher than 93% recognition rate with three reference images for different datasets under different lighting conditions.

  1. Indexing Volumetric Shapes with Matching and Packing.

    Science.gov (United States)

    Koes, David Ryan; Camacho, Carlos J

    2015-04-01

    We describe a novel algorithm for bulk-loading an index with high-dimensional data and apply it to the problem of volumetric shape matching. Our matching and packing algorithm is a general approach for packing data according to a similarity metric. First an approximate k-nearest neighbor graph is constructed using vantage-point initialization, an improvement to previous work that decreases construction time while improving the quality of approximation. Then graph matching is iteratively performed to pack related items closely together. The end result is a dense index with good performance. We define a new query specification for shape matching that uses minimum and maximum shape constraints to explicitly specify the spatial requirements of the desired shape. This specification provides a natural language for performing volumetric shape matching and is readily supported by the geometry-based similarity search (GSS) tree, an indexing structure that maintains explicit representations of volumetric shape. We describe our implementation of a GSS tree for volumetric shape matching and provide a comprehensive evaluation of parameter sensitivity, performance, and scalability. Compared to previous bulk-loading algorithms, we find that matching and packing can construct a GSS-tree index in the same amount of time that is denser, flatter, and better performing, with an observed average performance improvement of 2X.

  2. Graphical models and point pattern matching.

    Science.gov (United States)

    Caetano, Tibério S; Caelli, Terry; Schuurmans, Dale; Barone, Dante A C

    2006-10-01

    This paper describes a novel solution to the rigid point pattern matching problem in Euclidean spaces of any dimension. Although we assume rigid motion, jitter is allowed. We present a noniterative, polynomial time algorithm that is guaranteed to find an optimal solution for the noiseless case. First, we model point pattern matching as a weighted graph matching problem, where weights correspond to Euclidean distances between nodes. We then formulate graph matching as a problem of finding a maximum probability configuration in a graphical model. By using graph rigidity arguments, we prove that a sparse graphical model yields equivalent results to the fully connected model in the noiseless case. This allows us to obtain an algorithm that runs in polynomial time and is provably optimal for exact matching between noiseless point sets. For inexact matching, we can still apply the same algorithm to find approximately optimal solutions. Experimental results obtained by our approach show improvements in accuracy over current methods, particularly when matching patterns of different sizes.

  3. Multithreaded Implementation of Hybrid String Matching Algorithm

    Directory of Open Access Journals (Sweden)

    Akhtar Rasool

    2012-03-01

    Full Text Available Reading and taking reference from many books and articles, and then analyzing the Navies algorithm, Boyer Moore algorithm and Knuth Morris Pratt (KMP algorithm and a variety of improved algorithms, summarizes various advantages and disadvantages of the pattern matching algorithms. And on this basis, a new algorithm – Multithreaded Hybrid algorithm is introduced. The algorithm refers to Boyer Moore algorithm, KMP algorithm and the thinking of improved algorithms. Utilize the last character of the string, the next character and the method to compare from side to side, and then advance a new hybrid pattern matching algorithm. And it adjusted the comparison direction and the order of the comparison to make the maximum moving distance of each time to reduce the pattern matching time. The algorithm reduces the comparison number and greatlyreduces the moving number of the pattern and improves the matching efficiency. Multithreaded implementation of hybrid, pattern matching algorithm performs the parallel string searching on different text data by executing a number of threads simultaneously. This approach is advantageous from all other string-pattern matching algorithm in terms of time complexity. This again improves the overall string matching efficiency.

  4. Human-eye versus computerized color matching.

    Science.gov (United States)

    Yap, A U; Sim, C P; Loh, W L; Teo, J H

    1999-01-01

    This project compared the difference in color matching between human-eye assessment and computerized colorimetry. Fifty dental personnel were asked to color match Vita Lumin shade tabs to seven different randomly arranged test tabs from the Z100 shade guide. All evaluators were blinded to the shades of the test tabs and were asked to match only body shade of the Vita Lumin tab to the middle third or body of each test tab. The results obtained were subsequently computed into L*a*b* values and compared with results obtained by computerized colorimetry. Results indicate that the difference in color matching between human-eye assessment and computerized colorimetry is shade dependent. Discrepancy was significant for b* coordinates for shades A1 and B2 and L* and b* coordinates for shade C4. For all shades evaluated, color difference between human-eye and computerized color matching is perceivable under clinical settings, as delta E values are greater than 3. There is a need for correction factors in the formal specification of the color-matching software due to the discrepancy between human-eye and computerized colorimetric color matching.

  5. THE INTEGRATED AGENT IN MULTI-AGENT SYSTEMS

    OpenAIRE

    Maleković, Mirko; Čubrilo, Mirko

    2000-01-01

    [n this paper, we characterize the integrated agent in multi-agent systems. The following result is proved: if a multi-agent system is reflexive (symmetric, transitive, Euclidean) then the integrated agent of the multi-agent system is reflexive (symmetric, transitive, Euclidean), respectively. We also prove that the analogous result does not hold for multi-agent system's serial ness. A knowledge relationship between the integrated agent and agents in a multiagent system is presented.

  6. Mobile agent security using proxy-agents and trusted domains

    OpenAIRE

    Mitrovic, Nikola; Arronategui Arribalzaga, Unai

    2009-01-01

    Commercial or wide-network deployment of Mobile Agent Systems is not possible without satisfying security architecture. In this paper we propose architecture for secure Mobile Agent Systems, using Trusted Domains and Proxy agents. Existing approaches are based on security services at the level of an agent system, library or specific objects. Our concept uses proxy agents to enable transparent security services both to security-aware mobile agents and legacy agents. Per-agent and domain-level...

  7. State of otolaryngology match: has competition increased since the "early" match?

    Science.gov (United States)

    Cabrera-Muffly, Cristina; Sheeder, Jeanelle; Abaza, Mona

    2015-05-01

    To examine fluctuations in supply and demand of otolaryngology residency positions after the shift from an "early match" coordinated by the San Francisco match to a "conventional" matching process through the National Residency Matching Program (NRMP). To determine whether competition among otolaryngology residency positions have changed during this time frame. Database analysis. Matching statistics from 1998 to 2013 were obtained for all first-year residency positions through the NRMP. Matching statistics from 1998 to 2005 were obtained for otolaryngology residency positions through the San Francisco match. Univariate analysis was performed, with a P value less than .05 determined as significant. The number of otolaryngology positions and applicants remained proportional to the overall number of positions and applicants in the NRMP match. Otolaryngology applicants per position and the matching rate of all applicants did not change between the 2 time periods studied. The overall match rate of US seniors applying to otolaryngology did not change, while the match rate of non-US seniors decreased significantly following initiation of the conventional match. There was no significant change in United States Medical Licensing Exam step 1 scores or percentage of unfilled otolaryngology residency positions between the 2 time periods. When comparing the early versus conventional otolaryngology match time periods, the only major change was the decreased percentage of matching among non-US senior applicants. Despite a significant shift in match timing after 2006, the supply, demand, and competitiveness of otolaryngology residency positions have not changed significantly. © American Academy of Otolaryngology—Head and Neck Surgery Foundation 2015.

  8. Fingerprint Recognition Using Minutia Score Matching

    CERN Document Server

    J, Ravi; R, Venugopal K

    2010-01-01

    The popular Biometric used to authenticate a person is Fingerprint which is unique and permanent throughout a person's life. A minutia matching is widely used for fingerprint recognition and can be classified as ridge ending and ridge bifurcation. In this paper we projected Fingerprint Recognition using Minutia Score Matching method (FRMSM). For Fingerprint thinning, the Block Filter is used, which scans the image at the boundary to preserves the quality of the image and extract the minutiae from the thinned image. The false matching ratio is better compared to the existing algorithm.

  9. Impedance-matched cavity quantum memory

    CERN Document Server

    Afzelius, Mikael

    2010-01-01

    We consider an atomic frequency comb based quantum memory inside an asymmetric optical cavity. In this configuration it is possible to absorb the input light completely in a system with an effective optical depth of one, provided that the absorption per cavity round trip exactly matches the transmission of the coupling mirror ("impedance matching"). We show that the impedance matching results in a readout efficiency only limited by irreversible atomic dephasing, whose effect can be made very small in systems with large inhomogeneous broadening. Our proposal opens up an attractive route towards quantum memories with close to unit efficiency.

  10. Agent Architectures for Compliance

    Science.gov (United States)

    Burgemeestre, Brigitte; Hulstijn, Joris; Tan, Yao-Hua

    A Normative Multi-Agent System consists of autonomous agents who must comply with social norms. Different kinds of norms make different assumptions about the cognitive architecture of the agents. For example, a principle-based norm assumes that agents can reflect upon the consequences of their actions; a rule-based formulation only assumes that agents can avoid violations. In this paper we present several cognitive agent architectures for self-monitoring and compliance. We show how different assumptions about the cognitive architecture lead to different information needs when assessing compliance. The approach is validated with a case study of horizontal monitoring, an approach to corporate tax auditing recently introduced by the Dutch Customs and Tax Authority.

  11. Adaptive auctioneer agents

    OpenAIRE

    2011-01-01

    M.Sc. This dissertation investigates how auctioneer agents can maximise the revenue of an auction. Auctions are an effective solution to agent negotiation because of their simplicity. They are therefore the most widely used approach to agent negotiation. A review of auction theory proves that auction revenue is influenced by factors such as the auction format and the auction parameters. The optimal auction format and parameters are dependent on the bidders and the auction environment. A st...

  12. Hypercholesterolemia and Hypertension: Two Sides of the Same Coin.

    Science.gov (United States)

    Ivanovic, Branislava; Tadic, Marijana

    2015-12-01

    The aim of this review article is to summarize the current knowledge about mechanisms that connect blood pressure regulation and hypercholesterolemia, the mutual interaction between hypertension and hypercholesterolemia, and their influence on atherosclerosis development. Our research shows that at least one-third of the population of Western Europe has hypertension and hypercholesterolemia. Several biohumoral mechanisms could explain the relationship between hypertension and hypercholesterolemia and the association between these risk factors and accelerated atherosclerosis. The most investigated mechanisms are the renin-angiotensin-aldosterone system, oxidative stress, endothelial dysfunction, and increased production of endothelin-1. Arterial hypertension is frequently observed in combination with hypercholesterolemia, and this is related to accelerated atherosclerosis. Understanding the mechanisms behind this relationship could help explain the benefits of therapy that simultaneously reduce blood pressure and cholesterol levels.

  13. Refeeding and metabolic syndromes: two sides of the same coin

    Science.gov (United States)

    Obeid, O A; Hachem, D H; Ayoub, J J

    2014-01-01

    Refeeding syndrome describes the metabolic and clinical changes attributed to aggressive rehabilitation of malnourished subjects. The metabolic changes of refeeding are related to hypophosphatemia, hypokalemia, hypomagnesemia, sodium retention and hyperglycemia, and these are believed to be mainly the result of increased insulin secretion following high carbohydrate intake. In the past few decades, increased consumption of processed food (refined cereals, oils, sugar and sweeteners, and so on) lowered the intake of several macrominerals (mainly phosphorus, potassium and magnesium). This seems to have compromised the postprandial status of these macrominerals, in a manner that mimics low grade refeeding syndrome status. At the pathophysiological level, this condition favored the development of the different components of the metabolic syndrome. Thus, it is reasonable to postulate that metabolic syndrome is the result of long term exposure to a mild refeeding syndrome. PMID:24979149

  14. Reputation and Reward: Two Sides of the Same Bitcoin.

    Science.gov (United States)

    Delgado-Segura, Sergi; Tanas, Cristian; Herrera-Joancomartí, Jordi

    2016-05-27

    In Mobile Crowd Sensing (MCS), the power of the crowd, jointly with the sensing capabilities of the smartphones they wear, provides a new paradigm for data sensing. Scenarios involving user behavior or those that rely on user mobility are examples where standard sensor networks may not be suitable, and MCS provides an interesting solution. However, including human participation in sensing tasks presents numerous and unique research challenges. In this paper, we analyze three of the most important: user participation, data sensing quality and user anonymity. We tackle the three as a whole, since all of them are strongly correlated. As a result, we present PaySense, a general framework that incentivizes user participation and provides a mechanism to validate the quality of collected data based on the users' reputation. All such features are performed in a privacy-preserving way by using the Bitcoin cryptocurrency. Rather than a theoretical one, our framework has been implemented, and it is ready to be deployed and complement any existing MCS system.

  15. Fixed Points of Two-Sided Fractional Matrix Transformations

    Directory of Open Access Journals (Sweden)

    Handelman David

    2007-01-01

    Full Text Available Let and be complex matrices, and consider the densely defined map on matrices. Its fixed points form a graph, which is generically (in terms of nonempty, and is generically the Johnson graph ; in the nongeneric case, either it is a retract of the Johnson graph, or there is a topological continuum of fixed points. Criteria for the presence of attractive or repulsive fixed points are obtained. If and are entrywise nonnegative and is irreducible, then there are at most two nonnegative fixed points; if there are two, one is attractive, the other has a limited version of repulsiveness; if there is only one, this fixed point has a flow-through property. This leads to a numerical invariant for nonnegative matrices. Commuting pairs of these maps are classified by representations of a naturally appearing (discrete group. Special cases (e.g., is in the radical of the algebra generated by and are discussed in detail. For invertible size two matrices, a fixed point exists for all choices of if and only if has distinct eigenvalues, but this fails for larger sizes. Many of the problems derived from the determination of harmonic functions on a class of Markov chains.

  16. T and NK cells: two sides of tumor immunoevasion.

    Science.gov (United States)

    Fruci, Doriana; Lo Monaco, Elisa; Cifaldi, Loredana; Locatelli, Franco; Tremante, Elisa; Benevolo, Maria; Giacomini, Patrizio

    2013-02-04

    Natural Killer (NK) cells are known to reject several experimental murine tumors, but their antineoplastic activity in humans is not generally agreed upon, as exemplified by an interesting correspondence recently appeared in Cancer Research. In the present commentary, we join the discussion and bring to the attention of the readers of the Journal of Translational Medicine a set of recent, related reports. These studies demonstrate that effectors of the adaptive and innate immunity need to actively cooperate in order to reject tumors and, conversely, tumors protect themselves by dampening both T and NK cell responses. The recently reported ability of indoleamine 2,3-dioxygenase (IDO) and prostaglandin E2 (PGE2) expressed by melanoma cells to down-regulate activating NK receptors is yet another piece of evidence supporting combined and highly effective T/NK cell disabling. Major Histocompatibility Complex class I (MHC-I) molecules, including Human Leukocyte Antigen E (HLA-E), represent another class of shared activating/inhibitory ligands. Ongoing clinical trials with small molecules interfering with IDO and PGE2 may be exploiting an immune bonus to control cancer. Conversely, failure to simultaneously engage effectors of both the innate and the adaptive immunity may contribute to explain the limited clinical efficacy of T cell-only vaccination trials. Shared (T/NK cells) natural immunosuppressants and activating/inhibitory ligands expressed by tumor cells may provide mechanistic insight into impaired gathering and function of immune effectors at the tumor site.

  17. Acetylcholine, Histamine, and Cognition: Two Sides of the Same Coin

    Science.gov (United States)

    Blandina, Patrizio; Efoudebe, Marcel; Cenni, Gabriele; Mannaioni, Pierfrancesco; Passani, Maria Beatrice

    2004-01-01

    The forebrain cholinergic neurons are localized in the nucleus basalis magnocellularis (NBM), the major source of cholinergic innervation to the neocortex and to the amygdala, and in the medium septum-banda diagonalis complex, which provides cholinergic inputs to the hippocampus (Mesulam et al. 1983; Woolf et al. 1984; Nicoll 1985). Basic and…

  18. Information Congestion: open access in a two-sided market

    OpenAIRE

    Anderson, Simon P.; André De Palma

    2007-01-01

    Advertising messages compete for scarce attention. “Junk” mail, “spam” e-mail, and telemarketing calls need both parties to exert effort to generate transactions. Message recipients supply attention depending on average message benefit, while senders are motivated by profits. Costlier message transmission may improve message quality so more messages are examined. Too many messages may be sent, or the wrong ones. A Do-Not-Call policy beats a ban, but too many individuals opt out. A monopoly ga...

  19. Young successors : A Two-Sided Story in Renewing SMEs

    NARCIS (Netherlands)

    Kleingeld, Karin; Teeffelen, Lex van

    2016-01-01

    Entrepreneurship is often used as a synonym for starting up a new business. Existing SMEs — from purchasing to succession — are all too often left out of the picture. This booklet tells the stories of those involved in handing over their businesses to the next generation. It’s an honest and straight

  20. Measuring Political Polarization: Twitter shows the two sides of Venezuela

    CERN Document Server

    Morales, A J; Losada, J C; Benito, R M

    2015-01-01

    We say that a population is perfectly polarized when divided in two groups of the same size and opposite opinions. In this paper, we propose a methodology to study and measure the emergence of polarization from social interactions. We begin by proposing a model to estimate opinions in which a minority of influential individuals propagate their opinions through a social network. The result of the model is an opinion probability density function. Next, we propose an index to quantify the extent to which the resulting distribution is polarized. Finally, we apply the proposed methodology to a Twitter conversation about the late Venezuelan president, Hugo Ch\\'avez, finding a good agreement between our results and offline data. Hence, we show that our methodology can detect different degrees of polarization, depending on the structure of the network.

  1. CDKN1C mutations: two sides of the same coin.

    Science.gov (United States)

    Eggermann, Thomas; Binder, Gerhard; Brioude, Frédéric; Maher, Eamonn R; Lapunzina, Pablo; Cubellis, Maria Vittoria; Bergadá, Ignacio; Prawitt, Dirk; Begemann, Matthias

    2014-11-01

    Cyclin-dependent kinase (CDK)-inhibitor 1C (CDKN1C) negatively regulates cellular proliferation and it has been shown that loss-of-function mutations in the imprinted CDKN1C gene (11p15.5) are associated with the overgrowth disorder Beckwith-Wiedemann syndrome (BWS). With recent reports of gain-of-function mutations of the PCNA domain of CDKN1C in growth-retarded patients with IMAGe syndrome or Silver-Russell syndrome (SRS), its key role for growth has been confirmed. Thereby, the last gap in the spectrum of molecular alterations in 11p15.5 in growth-retardation and overgrowth syndromes could be closed. Recent functional studies explain the strict association of CDKN1C mutations with clinically opposite phenotypes and thereby contribute to our understanding of the function and regulation of the gene in particular and epigenetic regulation in general.

  2. PRIVATIZATION OF BRAZILIAN PRISONS: THE TWO SIDES OF THE CURRENCY

    Directory of Open Access Journals (Sweden)

    Hilderline Câmara de Oliveira

    2017-09-01

    Full Text Available Since the beginning of the 1990s, in Brazil, privatization has proved to be an emergency exit to crisis of services that the State cannot offer efficiently, such as Education, Health, Transportation, and more recently Social Security. The agenda in question is now Public Safety. Failing to meet the demand for lawsuits that pass through the Judiciary, Brazilian prisons are becoming increasingly overcrowded; the services lagged; Constant rebellions, high crime rate, denial of human rights and structural violence, glaring. Thus, this article aims to reflect on both sides of the 'currency' of prisons privatizations in the Brazilian scenario. He used the research with a qualitative approach and bibliographical character with the support of theoretical references from the specialized literature in the area, besides the technical documents, official reports from the Government and NGOs that carry out social control works. The research has shown that privatization seems to be the best way out in the short term and can solve a number of social problems, but how can one think of the profitable return that all privatization requires if its main objective is to reduce the target population? So either this alternative will create a market that, if it turns out, will end itself, or we will end up creating an even more perverse logic of incarceration.

  3. Measuring political polarization: Twitter shows the two sides of Venezuela

    Science.gov (United States)

    Morales, A. J.; Borondo, J.; Losada, J. C.; Benito, R. M.

    2015-03-01

    We say that a population is perfectly polarized when divided in two groups of the same size and opposite opinions. In this paper, we propose a methodology to study and measure the emergence of polarization from social interactions. We begin by proposing a model to estimate opinions in which a minority of influential individuals propagate their opinions through a social network. The result of the model is an opinion probability density function. Next, we propose an index to quantify the extent to which the resulting distribution is polarized. Finally, we apply the proposed methodology to a Twitter conversation about the late Venezuelan president, Hugo Chávez, finding a good agreement between our results and offline data. Hence, we show that our methodology can detect different degrees of polarization, depending on the structure of the network.

  4. Areeda-Turner in Two-Sided Markets

    NARCIS (Netherlands)

    Behringer, S.; Filistrucchi, L.

    2014-01-01

    Areeda and Turner (1975) were the first to argue that a price below marginal costs should be considered a sign of predation. Recognizing that marginal cost data were typically unavailable, the authors concluded that a price below average variable cost should be presumed unlawful. This socalled Areed

  5. Hormesis: Decoding Two Sides of the Same Coin

    Directory of Open Access Journals (Sweden)

    Dipita Bhakta-Guha

    2015-12-01

    Full Text Available In the paradigm of drug administration, determining the correct dosage of a therapeutic is often a challenge. Several drugs have been noted to demonstrate contradictory effects per se at high and low doses. This duality in function of a drug at different concentrations is known as hormesis. Therefore, it becomes necessary to study these biphasic functions in order to understand the mechanistic basis of their effects. In this article, we focus on different molecules and pathways associated with diseases that possess a duality in their function and thus prove to be the seat of hormesis. In particular, we have highlighted the pathways and factors involved in the progression of cancer and how the biphasic behavior of the molecules involved can alter the manifestations of cancer. Because of the pragmatic role that it exhibits, the imminent need is to draw attention to the concept of hormesis. Herein, we also discuss different stressors that trigger hormesis and how stress-mediated responses increase the overall adaptive response of an individual to stress stimulus. We talk about common pathways through which cancer progresses (such as nuclear factor erythroid 2-related factor 2-Kelch-like ECH-associated protein 1 (Nrf2-Keap1, sirtuin-forkhead box O (SIRT-FOXO and others, analyzing how diverse molecules associated with these pathways conform to hormesis.

  6. Areeda-Turner in Two-Sided Markets

    NARCIS (Netherlands)

    Behringer, S.; Filistrucchi, L.

    2014-01-01

    Areeda and Turner (1975) were the first to argue that a price below marginal costs should be considered a sign of predation. Recognizing that marginal cost data were typically unavailable, the authors concluded that a price below average variable cost should be presumed unlawful. This socalled

  7. Areeda-Turner in Two-Sided Markets

    NARCIS (Netherlands)

    Behringer, S.; Filistrucchi, L.

    2014-01-01

    Areeda and Turner (1975) were the first to argue that a price below marginal costs should be considered a sign of predation. Recognizing that marginal cost data were typically unavailable, the authors concluded that a price below average variable cost should be presumed unlawful. This socalled Areed

  8. Fixed Points of Two-Sided Fractional Matrix Transformations

    Directory of Open Access Journals (Sweden)

    David Handelman

    2007-02-01

    Full Text Available Let C and D be n×n complex matrices, and consider the densely defined map φC,D:X↦(I−CXD−1 on n×n matrices. Its fixed points form a graph, which is generically (in terms of (C,D nonempty, and is generically the Johnson graph J(n,2n; in the nongeneric case, either it is a retract of the Johnson graph, or there is a topological continuum of fixed points. Criteria for the presence of attractive or repulsive fixed points are obtained. If C and D are entrywise nonnegative and CD is irreducible, then there are at most two nonnegative fixed points; if there are two, one is attractive, the other has a limited version of repulsiveness; if there is only one, this fixed point has a flow-through property. This leads to a numerical invariant for nonnegative matrices. Commuting pairs of these maps are classified by representations of a naturally appearing (discrete group. Special cases (e.g., CD−DC is in the radical of the algebra generated by C and D are discussed in detail. For invertible size two matrices, a fixed point exists for all choices of C if and only if D has distinct eigenvalues, but this fails for larger sizes. Many of the problems derived from the determination of harmonic functions on a class of Markov chains.

  9. Eating disorders and obesity: two sides of the same coin?

    Science.gov (United States)

    Day, Jemma; Ternouth, Andrew; Collier, David A

    2009-01-01

    The eating disorders anorexia and bulimia nervosa have traditionally been regarded as entirely separate from obesity. Eating disorders have been regarded as Western culture-bound syndromes, arising in societies with excessive emphasis on weight, shape and appearance, and best treated by psychological therapies, in particular cognitive behavioural therapy or family-based interventions. In contrast, obesity has been considered a medical illness with metabolic and genetic origins, and thought to be best treated by mainstream medicine, involving dietary, drug or surgical treatment. We believe that this polarisation is fundamentally flawed, and research and treatment of both types of disorder would be better served by greater appreciation of the psychosocial components of obesity and the biological and genetic components of eating disorders. There are similarities in phenotype (such as excessive attempts at weight control, binge eating behaviours) and in risk factors (such as low self-esteem, external locus of control, childhood abuse and neglect, dieting, media exposure, body image dissatisfaction, weight-related teasing and shared susceptibility genes). One example of shared genetic risk is the brain-derived neurotrophic factor (BNDF) gene, in which the valine allele of the Val66Met amino acid polymorphism predisposes to obesity, whereas the methionine allele predisposes to eating disorders. Thus the evidence suggests that these disorders will have both shared and distinct susceptibility factors; some will predispose to both types of disorder, some will push in opposite directions, and some will separate them.

  10. Curriculum and Assessment: Two Sides of the Same Coin.

    Science.gov (United States)

    Shoemaker, Berry Jean Eklund; Lewin, Larry

    1993-01-01

    Eugene (Oregon) Public Schools want to replace the traditional content-driven curriculum with a general concepts-based curriculum stressing the relationships among ideas. To help district educators understand the new model, a coin metaphor describing the two interlocking areas of curriculum (learning core conceptual knowledge and strategic…

  11. Multiculturalism and Social Justice: Two Sides of the Same Coin

    Science.gov (United States)

    Ratts, Manivong J.

    2011-01-01

    The development of multicultural and advocacy competencies evolved out of the multicultural and social justice movements. To help readers more fully understand the complementary nature between these 2 sets of competencies and to connect both movements, this article introduces the Multicultural and Advocacy Dimensions model. Implications are also…

  12. Two Sides of the Megalopolis: Educating for Sustainable Citizenship

    Directory of Open Access Journals (Sweden)

    Alexander POPE

    2012-11-01

    Full Text Available Despite widespread focus on literacy and math at the expense of other subjects, citizenship and environmental education have an important role in American public education. Citizenship and environmental education are broadly tasked with helping students develop the knowledge, skills, and attitudes needed to shepherd the body politic and natural world, respectively, into the future. For educators and administrators concerned with instructional efficiency, educational farm visits offer one means of pairing these two approaches into a unified learning experience. This paper presents findings from a qualitative case study analysis of two such programs, incorporating interviews with and observations of visiting students, teachers, and parents. The authors argue that sustainable citizenship—a typically European conception of citizenship that stresses the natural as well as the national world—is an important outcome of these types of educational experiences.

  13. Meditation and Hypnosis: Two Sides of the Same Coin?

    Science.gov (United States)

    Facco, Enrico

    2017-01-01

    Hypnosis and meditation, as a whole, form a heterogeneous complex of psychosomatic techniques able to control mind and body regulation. Hypnosis has been pragmatically used for limited therapeutic targets, while Eastern meditation has much wider philosophical and existential implications, aiming for a radical liberation from all illusions, attachments, suffering and pain. The available data on the history, phenomenology, and neuropsychology of hypnosis and meditation show several common features, such as the following: (a) induction based on focused attention; (b) capability to reach an intentional control of both biologic-somatic activities and conscious-unconscious processes; (c) activation/deactivation of several brain areas and circuits (e.g., the default modality network and pain neuromatrix) with a relevant overlapping between the two.

  14. Reputation and Reward: Two Sides of the Same Bitcoin

    Science.gov (United States)

    Delgado-Segura, Sergi; Tanas, Cristian; Herrera-Joancomartí, Jordi

    2016-01-01

    In Mobile Crowd Sensing (MCS), the power of the crowd, jointly with the sensing capabilities of the smartphones they wear, provides a new paradigm for data sensing. Scenarios involving user behavior or those that rely on user mobility are examples where standard sensor networks may not be suitable, and MCS provides an interesting solution. However, including human participation in sensing tasks presents numerous and unique research challenges. In this paper, we analyze three of the most important: user participation, data sensing quality and user anonymity. We tackle the three as a whole, since all of them are strongly correlated. As a result, we present PaySense, a general framework that incentivizes user participation and provides a mechanism to validate the quality of collected data based on the users’ reputation. All such features are performed in a privacy-preserving way by using the Bitcoin cryptocurrency. Rather than a theoretical one, our framework has been implemented, and it is ready to be deployed and complement any existing MCS system. PMID:27240373

  15. INCLUSION IN ADAPTED SPORT: TWO SIDES OF THE SAME COIN

    Directory of Open Access Journals (Sweden)

    Raúl Reina

    2014-05-01

    Full Text Available This paper shows current inclusionprocesses in adapted sports. First, some aspects about inclusion are discussed from philosophical and practice perspectives, and its relationship with a functional and health-related model related physical activity and sport activities where client interacts with the personal and environment factors (facilitators and barriers. Second, current inclusion process in sport organizations is explained, exposing some of the disputes arising from this process, especially in regard to functional classifications and its relation with the special needs discourse. Finally, we propose a continuum for inclusion in physical activity and sports, from specific to full inclusion that offers more opportunities and ways of practice; more than two faces of the same coin.

  16. Reputation and Reward: Two Sides of the Same Bitcoin

    Directory of Open Access Journals (Sweden)

    Sergi Delgado-Segura

    2016-05-01

    Full Text Available In Mobile Crowd Sensing (MCS, the power of the crowd, jointly with the sensing capabilities of the smartphones they wear, provides a new paradigm for data sensing. Scenarios involving user behavior or those that rely on user mobility are examples where standard sensor networks may not be suitable, and MCS provides an interesting solution. However, including human participation in sensing tasks presents numerous and unique research challenges. In this paper, we analyze three of the most important: user participation, data sensing quality and user anonymity. We tackle the three as a whole, since all of them are strongly correlated. As a result, we present PaySense, a general framework that incentivizes user participation and provides a mechanism to validate the quality of collected data based on the users’ reputation. All such features are performed in a privacy-preserving way by using the Bitcoin cryptocurrency. Rather than a theoretical one, our framework has been implemented, and it is ready to be deployed and complement any existing MCS system.

  17. Culturally Aware Agent Communication

    DEFF Research Database (Denmark)

    Rehm, Matthias; Nakano, Yukiko; Koda, Tomoko

    2012-01-01

    Agent based interaction in the form of Embodied Conversational Agents (ECAs) has matured over the last decade and agents have become more and more sophisticated in terms of their verbal and nonverbal behavior like facial expressions or gestures. Having such “natural” communication channels...... available for expressing not only task-relevant but also socially and psychologically relevant information makes it necessary to take influences into account that are not readily implemented like emotions or cultural heuristics. These influences have a huge impact on the success of an interaction...... the expression of multimodal behavior in agents....

  18. Decontamination Data - Blister Agents

    Data.gov (United States)

    U.S. Environmental Protection Agency — Decontamination efficacy data for blister agents on various building materials using various decontamination solutions. This dataset is associated with the following...

  19. On Stable Marriages and Greedy Matchings

    Energy Technology Data Exchange (ETDEWEB)

    Manne, Fredrik; Naim, Md; Lerring, Hakon; Halappanavar, Mahantesh

    2016-12-11

    Research on stable marriage problems has a long and mathematically rigorous history, while that of exploiting greedy matchings in combinatorial scientific computing is a younger and less developed research field. In this paper we consider the relationships between these two areas. In particular we show that several problems related to computing greedy matchings can be formulated as stable marriage problems and as a consequence several recently proposed algorithms for computing greedy matchings are in fact special cases of well known algorithms for the stable marriage problem. However, in terms of implementations and practical scalable solutions on modern hardware, the greedy matching community has made considerable progress. We show that due to the strong relationship between these two fields many of these results are also applicable for solving stable marriage problems.

  20. 34 CFR 361.60 - Matching requirements.

    Science.gov (United States)

    2010-07-01

    ... REHABILITATIVE SERVICES, DEPARTMENT OF EDUCATION STATE VOCATIONAL REHABILITATION SERVICES PROGRAM Financing of State Vocational Rehabilitation Programs § 361.60 Matching requirements. (a) Federal share—(1) General... share for expenditures made for the construction of a facility for community rehabilitation...

  1. Sequence Matching Analysis for Curriculum Development

    National Research Council Canada - National Science Library

    Liem Yenny Bendatu; Bernardo Nugroho Yahya

    2015-01-01

    .... This study attempts to develop a sequence matching analysis. Considering conformance checking as the basis of this approach, this proposed approach utilizes the current control flow technique in process mining domain...

  2. Design of New SAW DQPSK Matched Filter

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    A new surface acoustic wave differential quadraphase shift key(SAW DQPSK) spread spectrum(SS) signal matched filter based on the fusion of SS and differential modulation is reported. The design of multi-phase coded SAW matched filter is proposed rather than another design of SAW DQPSK filter, which can cut in a half of the delay time of SAW DQPSK matched filter and SAW fixed delay line(FDL) used for differential demodulation. This breakthrough is made the system largely reduce a size and process much easily. This method can also be feasible in other SAW MPSK matched filter design especially when the modulation phase number is larger than 4. The design example and its experimental results are given.

  3. Clothing Matching for Visually Impaired Persons.

    Science.gov (United States)

    Yuan, Shuai; Tian, Yingli; Arditi, Aries

    2011-01-01

    Matching clothes is a challenging task for many blind people. In this paper, we present a proof of concept system to solve this problem. The system consists of 1) a camera connected to a computer to perform pattern and color matching process; 2) speech commands for system control and configuration; and 3) audio feedback to provide matching results for both color and patterns of clothes. This system can handle clothes in deficient color without any pattern, as well as clothing with multiple colors and complex patterns to aid both blind and color deficient people. Furthermore, our method is robust to variations of illumination, clothing rotation and wrinkling. To evaluate the proposed prototype, we collect two challenging databases including clothes without any pattern, or with multiple colors and different patterns under different conditions of lighting and rotation. Results reported here demonstrate the robustness and effectiveness of the proposed clothing matching system.

  4. The Effectiveness of Advertising Matching Purchase Motivation

    NARCIS (Netherlands)

    J. Loef; G. Antonides (Gerrit); W.F. van Raaij (Fred)

    2001-01-01

    textabstractSeveral authors have proposed frameworks to help advertisers predict and plan advertising effectiveness. Rossiter and Percy's advertising grid (1997) recommends that the ad appeal should match the purchase motivation or attitude base. They suggest that for utilitarian brands

  5. Regular Expression Matching and Operational Semantics

    CERN Document Server

    Rathnayake, Asiri; 10.4204/EPTCS.62.3

    2011-01-01

    Many programming languages and tools, ranging from grep to the Java String library, contain regular expression matchers. Rather than first translating a regular expression into a deterministic finite automaton, such implementations typically match the regular expression on the fly. Thus they can be seen as virtual machines interpreting the regular expression much as if it were a program with some non-deterministic constructs such as the Kleene star. We formalize this implementation technique for regular expression matching using operational semantics. Specifically, we derive a series of abstract machines, moving from the abstract definition of matching to increasingly realistic machines. First a continuation is added to the operational semantics to describe what remains to be matched after the current expression. Next, we represent the expression as a data structure using pointers, which enables redundant searches to be eliminated via testing for pointer equality. From there, we arrive both at Thompson's lock...

  6. AN EVEN ODD MULTIPLE PATTERN MATCHING ALGORITHM

    Directory of Open Access Journals (Sweden)

    Raju Bhukya,

    2011-03-01

    Full Text Available Pattern matching plays an important role in various applications ranging from text searching in word processors to identification of functional and structural behavior in proteins and genes. Pattern matching is one of the fundamental areas in the field of computational biology. Currently research in life science area is producing large amount of genetic data. Due to this large and use full information can be gained by finding valuable information available from the genomic sequences. Many algorithms have been proposed but more efficient and robust methods are needed for the multiple pattern matching algorithms for better use. We introduce a new indexing technique called an Index based even odd multiple pattern matching, which gives very good performance when compared with some of the existing popular algorithms. The current technique avoids unnecessary DNA comparisons as a result the number of comparisons and CPC ratio gradually decreases and overall performance increases accordingly.

  7. Fast algorithm on string cross pattern matching

    Institute of Scientific and Technical Information of China (English)

    Liu Gongshen; Li Jianhua; Li Shenghong

    2005-01-01

    Given a set U which is consisted of strings defined on alphabet ∑ , string cross pattern matching is to find all the matches between every two strings in U. It is utilized in text processing like removing the duplication of strings.This paper presents a fast string cross pattern matching algorithm based on extracting high frequency strings. Compared with existing algorithms including single-pattern algorithms and multi-pattern matching algorithms, this algorithm is featured by both low time complexityand low space complexity. Because Chinese alphabet is large and the average length of Chinese words is much short, this algorithm is more suitable to process the text written by Chinese, especially when the size of ∑ is large and the number of strings is far more than the maximum length of strings of set U.

  8. AN EVEN ODD MULTIPLE PATTERN MATCHING ALGORITHM

    OpenAIRE

    Raju Bhukya; DVLN Somayajulu

    2011-01-01

    Pattern matching plays an important role in various applications ranging from text searching in word processors to identification of functional and structural behavior in proteins and genes. Pattern matching is one of the fundamental areas in the field of computational biology. Currently research in life science area is producing large amount of genetic data. Due to this large and use full information can be gained by finding valuable information available from the genomic sequences. Many alg...

  9. Secure Fingerprint Alignment and Matching Protocols

    OpenAIRE

    Bayatbabolghani, Fattaneh; Blanton, Marina; Aliasgari, Mehrdad; Goodrich, Michael

    2017-01-01

    We present three secure privacy-preserving protocols for fingerprint alignment and matching, based on what are considered to be the most precise and efficient fingerprint recognition algorithms-those based on the geometric matching of "landmarks" known as minutia points. Our protocols allow two or more honest-but-curious parties to compare their respective privately-held fingerprints in a secure way such that they each learn nothing more than a highly-accurate score of how well the fingerprin...

  10. Variability of soccer referees' match performances.

    Science.gov (United States)

    Weston, M; Drust, B; Atkinson, G; Gregson, W

    2011-03-01

    The aim of the present study was to determine the between-match variability in soccer referees' match performances. 1 269 individual match observations were undertaken on 59 referees (range 2-79 games per referee) officiating in the English Premier League and Championship from 2003/2004 to 2007/2008 using a computerised tracking system (Prozone (®), Leeds, England). Between-match coefficients of variation (CV) were calculated for all games and then compared between referee age and experience groups. High mean CVs were observed for high-speed running distance (25.9±10.1%), recovery time (32.7±13.8%), explosive sprints (34.3±16.6%), total number of sprints (54.0±20.7%) and number of match fouls (28±4.6%). Smaller CVs were observed for total distance covered (3.8±1.5%), top sprinting speed (5.6±10.9%), distance from the ball (4.2±1.9%) and the distance from fouls (9.9±4.3%). Variability in match activities was not influenced by referee age or experience. The present study's findings demonstrate that variability in soccer referees' match performances is high in some variables and not dependent on referee age or experience. Such variability means that research requires large sample sizes to detect real systematic changes in a number of performance characteristics when studied during matches. © Georg Thieme Verlag KG Stuttgart · New York.

  11. Hybrid-Based Dense Stereo Matching

    Science.gov (United States)

    Chuang, T. Y.; Ting, H. W.; Jaw, J. J.

    2016-06-01

    Stereo matching generating accurate and dense disparity maps is an indispensable technique for 3D exploitation of imagery in the fields of Computer vision and Photogrammetry. Although numerous solutions and advances have been proposed in the literature, occlusions, disparity discontinuities, sparse texture, image distortion, and illumination changes still lead to problematic issues and await better treatment. In this paper, a hybrid-based method based on semi-global matching is presented to tackle the challenges on dense stereo matching. To ease the sensitiveness of SGM cost aggregation towards penalty parameters, a formal way to provide proper penalty estimates is proposed. To this end, the study manipulates a shape-adaptive cross-based matching with an edge constraint to generate an initial disparity map for penalty estimation. Image edges, indicating the potential locations of occlusions as well as disparity discontinuities, are approved by the edge drawing algorithm to ensure the local support regions not to cover significant disparity changes. Besides, an additional penalty parameter 𝑃𝑒 is imposed onto the energy function of SGM cost aggregation to specifically handle edge pixels. Furthermore, the final disparities of edge pixels are found by weighting both values derived from the SGM cost aggregation and the U-SURF matching, providing more reliable estimates at disparity discontinuity areas. Evaluations on Middlebury stereo benchmarks demonstrate satisfactory performance and reveal the potency of the hybrid-based dense stereo matching method.

  12. Change Agent Survival Guide

    Science.gov (United States)

    Dunbar, Folwell L.

    2011-01-01

    Consulting is a rough racket. Only a tarantula hair above IRS agents, meter maids and used car sales people, the profession is a prickly burr for slings and arrows. Throw in education, focus on dysfunctional schools and call oneself a "change agent," and this bad rap all but disappears. Unfortunately, though, consulting/coaching/mentoring in…

  13. Agents in domestic environments

    NARCIS (Netherlands)

    Moergestel, Leo van; Langerak, Wouter; Meerstra, Glenn; Nieuwenburg, Niels van; Pape, Franc; Telgen, Daniël; Puik, Erik; Meyer, John-Jules

    2013-01-01

    Athor supplied : "This paper describes an agent-based architecture for domotics. This architecture is based on requirements about expandability and hardware independence. The heart of the system is a multi-agent system. This system is distributed over several platforms to open the possibility to ti

  14. Agents in domestic environments

    NARCIS (Netherlands)

    Glenn Meerstra; Wouter Langerak; Leo van Moergestel; Niels van Nieuwenburg; John-Jules Meyer; Ing. Erik Puik; Franc Pape; Daniël Telgen

    2013-01-01

    Athor supplied : "This paper describes an agent-based architecture for domotics. This architecture is based on requirements about expandability and hardware independence. The heart of the system is a multi-agent system. This system is distributed over several platforms to open the possibility to

  15. Asimovian Adaptive Agents

    CERN Document Server

    Gordon, D F

    2011-01-01

    The goal of this research is to develop agents that are adaptive and predictable and timely. At first blush, these three requirements seem contradictory. For example, adaptation risks introducing undesirable side effects, thereby making agents' behavior less predictable. Furthermore, although formal verification can assist in ensuring behavioral predictability, it is known to be time-consuming. Our solution to the challenge of satisfying all three requirements is the following. Agents have finite-state automaton plans, which are adapted online via evolutionary learning (perturbation) operators. To ensure that critical behavioral constraints are always satisfied, agents' plans are first formally verified. They are then reverified after every adaptation. If reverification concludes that constraints are violated, the plans are repaired. The main objective of this paper is to improve the efficiency of reverification after learning, so that agents have a sufficiently rapid response time. We present two solutions: ...

  16. Study on scattering properties of tissues with hyperosmotic chemical agents

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Optical properties of biological tissue are variable due to the changes of micro-structures and scattering constituents after hyperosmotic chemical agents permeates into tissue. The changes of optical properties of biological tissue are due to the refractive indices matching between the scatterers with high refractive index and the ground substances, which reduce scattering of tissue. The main reasons are that permeated semipermeable chemical agents with higher refractive index than the ground substances of tissuemakes the refractive index of ground substances of tissue higher by the enhancement of the permeated concentration. We studied on the collimated transmittance changes of light penetrating biological tissue after the hyperosmotic chemical agents administrates with different concentration.

  17. 媒体产业中的平台质量竞争——基于双边市场的理论视角的研究%Research on Platform Quality Competition in the Media Industry Based on Two-sided Market Theory

    Institute of Scientific and Technical Information of China (English)

    万兴

    2012-01-01

    The media industry is a typical two-sided market, where audiences and advertisers are the two sides. There are two typieal faets of the two-sided markets in the media industry. Firstly, the major revenue source of the same category media platform may differ. The feature is rare in other industries, where the make-money side is fixed. Secondly, the first-mover advantage in the media industry is not as remarkable as in other industries that are characterized by network effect. The first-mover advantage often brings entry barriers for a later comer, but the media industry witnesses many eases of successful market entry. How to analyze the difference in major revenue source, the traditional horizontal difference model or one-sided model cannot give reasonable explanation. The qual- ity difference of media contents is critical for a media platform to choose its business model. The paper establishes a two-sided market model including the quality factor to analyze the monopoly and duopoly situation. The paper has two contributions. Firstly, this paper incorporates quality into a two-sided model to analyze the quality choice of a platform on market performance. Secondly, this paper uses the quality-difference model to analyze whether or not there is the first-mover advantage in a two-sided media market and whether or not a latecomer can gain advantage over an incumbent. This paper establishes the two-sided model and makes discussion using the TV channel industry as an example. However, the modeling process and results are not limited to the industry but suitable for many media sectors. The research finds that a monopoly platform can make profits from the audience side with high content quality or depends on advertisement fees based on network externalities, but a strategy of tradeoff is not desirable. With the increase of network externalities between audiences and advertisers, the audience-side and advertiser-side profits both inerease. With the increase of eontent

  18. Engineering a Multi-Agent System in GOAL

    DEFF Research Database (Denmark)

    Villadsen, Jørgen; Jensen, Andreas Schmidt; Christensen, Nicolai Christian

    2013-01-01

    We provide a brief description of the GOAL-DTU system, including the overall design, the tools and the algorithms that we used in the Multi-Agent Programming Contest 2013. We focus on a description of the strategies and on an analysis of the matches. We also evaluate our experiences with the GOAL...

  19. Agent-based analysis of organizations : formalization and simulation

    NARCIS (Netherlands)

    Dignum, M.V.; Tick, C.

    2008-01-01

    Organizational effectiveness depends on many factors, including individual excellence, efficient structures, effective planning and capability to understand and match context requirements. We propose a way to model organizational performance based on a combination of formal models and agent-based si

  20. Optimally matching support and perceived spousal sensitivity.

    Science.gov (United States)

    Cutrona, Carolyn E; Shaffer, Philip A; Wesner, Kristin A; Gardner, Kelli A

    2007-12-01

    Partner sensitivity is an important antecedent of both intimacy (H. T. Reis & P. Shaver, 1988) and attachment (M. D. S. Ainsworth, 1989). On the basis of the optimal matching model of social support (C. E. Cutrona & D. Russell, 1990), support behaviors that "matched" the support goals of the stressed individual were predicted to lead to the perception of partner sensitivity. Predictions were tested with 59 married couples, who engaged in a videotaped self-disclosure task. Matching support was defined as the disclosure of emotions followed by emotional support or a request for information followed by informational support. Partial evidence was found for the predictions. Matching support following the disclosure of emotions was predictive of perceived partner sensitivity. Mismatched support following the disclosure of emotions predicted lower marital satisfaction, through the mediation of partner sensitivity. Matching support following a request for information was not predictive of perceived partner sensitivity, but negative partner responses (e.g., criticism or sarcasm) following a request for information negatively predicted perceptions of partner sensitivity. The importance of considering the context of support transactions is discussed.

  1. A review on compressed pattern matching

    Directory of Open Access Journals (Sweden)

    Surya Prakash Mishra

    2016-09-01

    Full Text Available Compressed pattern matching (CPM refers to the task of locating all the occurrences of a pattern (or set of patterns inside the body of compressed text. In this type of matching, pattern may or may not be compressed. CPM is very useful in handling large volume of data especially over the network. It has many applications in computational biology, where it is useful in finding similar trends in DNA sequences; intrusion detection over the networks, big data analytics etc. Various solutions have been provided by researchers where pattern is matched directly over the uncompressed text. Such solution requires lot of space and consumes lot of time when handling the big data. Various researchers have proposed the efficient solutions for compression but very few exist for pattern matching over the compressed text. Considering the future trend where data size is increasing exponentially day-by-day, CPM has become a desirable task. This paper presents a critical review on the recent techniques on the compressed pattern matching. The covered techniques includes: Word based Huffman codes, Word Based Tagged Codes; Wavelet Tree Based Indexing. We have presented a comparative analysis of all the techniques mentioned above and highlighted their advantages and disadvantages.

  2. Matched filter based iterative adaptive approach

    Science.gov (United States)

    Nepal, Ramesh; Zhang, Yan Rockee; Li, Zhengzheng; Blake, William

    2016-05-01

    Matched Filter sidelobes from diversified LPI waveform design and sensor resolution are two important considerations in radars and active sensors in general. Matched Filter sidelobes can potentially mask weaker targets, and low sensor resolution not only causes a high margin of error but also limits sensing in target-rich environment/ sector. The improvement in those factors, in part, concern with the transmitted waveform and consequently pulse compression techniques. An adaptive pulse compression algorithm is hence desired that can mitigate the aforementioned limitations. A new Matched Filter based Iterative Adaptive Approach, MF-IAA, as an extension to traditional Iterative Adaptive Approach, IAA, has been developed. MF-IAA takes its input as the Matched Filter output. The motivation here is to facilitate implementation of Iterative Adaptive Approach without disrupting the processing chain of traditional Matched Filter. Similar to IAA, MF-IAA is a user parameter free, iterative, weighted least square based spectral identification algorithm. This work focuses on the implementation of MF-IAA. The feasibility of MF-IAA is studied using a realistic airborne radar simulator as well as actual measured airborne radar data. The performance of MF-IAA is measured with different test waveforms, and different Signal-to-Noise (SNR) levels. In addition, Range-Doppler super-resolution using MF-IAA is investigated. Sidelobe reduction as well as super-resolution enhancement is validated. The robustness of MF-IAA with respect to different LPI waveforms and SNR levels is also demonstrated.

  3. Match Analysis in Volleyball: a systematic review

    Directory of Open Access Journals (Sweden)

    Miguel Silva

    2016-03-01

    Full Text Available The present article aims to review the available literature on match analysis in adult male Volleyball. Specific key words "performance analysis", "match analysis", "game analysis", "notational analysis", "tactical analysis", "technical analysis", "outcome" and "skills" were used to search relevant databases (PubMed, Web of Science, SportDiscus, Academic Search Complete and the International Journal of Performance Analysis in Sport. The research was conducted according to PRISMA (Preferred Reporting Items for Systematic reviews and Meta analyses guidelines. Of 3407 studies initially identified, only 34 were fully reviewed, and their outcome measures extracted and analyzed. Studies that fit all inclusion criteria were organized into two levels of analysis, according to their research design (comparative or predictive and depending on the type of variables analyzed (skills and their relationship with success, play position and match phase. Results show that from a methodological point of view, comparative studies where currently complemented with some predictive studies. This predictive approach emerged with the aim to identify the relationship between variables, considering their possible interactions and consequently its effect on team performance, contributing to a better understanding of Volleyball game performance through match analysis. Taking into account the limitations of the reviewed studies, future research should provide comprehensive operational definitions for the studied variables, using more recent samples, and consider integrating the player positions and match phase contexts into the analysis of Volleyball.

  4. Sketch Matching on Topology Product Graph.

    Science.gov (United States)

    Liang, Shuang; Luo, Jun; Liu, Wenyin; Wei, Yichen

    2015-08-01

    Sketch matching is the fundamental problem in sketch based interfaces. After years of study, it remains challenging when there exists large irregularity and variations in the hand drawn sketch shapes. While most existing works exploit topology relations and graph representations for this problem, they are usually limited by the coarse topology exploration and heuristic (thus suboptimal) similarity metrics between graphs. We present a new sketch matching method with two novel contributions. We introduce a comprehensive definition of topology relations, which results in a rich and informative graph representation of sketches. For graph matching, we propose topology product graph that retains the full correspondence for matching two graphs. Based on it, we derive an intuitive sketch similarity metric whose exact solution is easy to compute. In addition, the graph representation and new metric naturally support partial matching, an important practical problem that received less attention in the literature. Extensive experimental results on a real challenging dataset and the superior performance of our method show that it outperforms the state-of-the-art.

  5. Antenna impedance matching with neural networks.

    Science.gov (United States)

    Hemminger, Thomas L

    2005-10-01

    Impedance matching between transmission lines and antennas is an important and fundamental concept in electromagnetic theory. One definition of antenna impedance is the resistance and reactance seen at the antenna terminals or the ratio of electric to magnetic fields at the input. The primary intent of this paper is real-time compensation for changes in the driving point impedance of an antenna due to frequency deviations. In general, the driving point impedance of an antenna or antenna array is computed by numerical methods such as the method of moments or similar techniques. Some configurations do lend themselves to analytical solutions, which will be the primary focus of this work. This paper employs a neural control system to match antenna feed lines to two common antennas during frequency sweeps. In practice, impedance matching is performed off-line with Smith charts or relatively complex formulas but they rarely perform optimally over a large bandwidth. There have been very few attempts to compensate for matching errors while the transmission system is in operation and most techniques have been targeted to a relatively small range of frequencies. The approach proposed here employs three small neural networks to perform real-time impedance matching over a broad range of frequencies during transmitter operation. Double stub tuners are being explored in this paper but the approach can certainly be applied to other methodologies. The ultimate purpose of this work is the development of an inexpensive microcontroller-based system.

  6. PREDICTING THE MATCH OUTCOME IN ONE DAY INTERNATIONAL CRICKET MATCHES, WHILE THE GAME IS IN PROGRESS

    Directory of Open Access Journals (Sweden)

    Michael Bailey

    2006-12-01

    Full Text Available Millions of dollars are wagered on the outcome of one day international (ODI cricket matches, with a large percentage of bets occurring after the game has commenced. Using match information gathered from all 2200 ODI matches played prior to January 2005, a range of variables that could independently explain statistically significant proportions of variation associated with the predicted run totals and match outcomes were created. Such variables include home ground advantage, past performances, match experience, performance at the specific venue, performance against the specific opposition, experience at the specific venue and current form. Using a multiple linear regression model, prediction variables were numerically weighted according to statistical significance and used to predict the match outcome. With the use of the Duckworth-Lewis method to determine resources remaining, at the end of each completed over, the predicted run total of the batting team could be updated to provide a more accurate prediction of the match outcome. By applying this prediction approach to a holdout sample of matches, the efficiency of the "in the run" wagering market could be assessed. Preliminary results suggest that the market is prone to overreact to events occurring throughout the course of the match, thus creating brief inefficiencies in the wagering market

  7. Inertia Matching Manipulability and Load Matching Optimization for Humanoid Jumping Robot

    Directory of Open Access Journals (Sweden)

    Zhaohong Xu

    2008-11-01

    Full Text Available Human jumping motion includes stance phase, flight phase and landing impact phase. Jumping robot belongs to a variable constraints system because every phase has different constraint conditions. An unified dynamics equation during stance phase and flight phase is established based on floated-basis space. Inertia matching is used to analyze actuator/gear systems and select the optimum gear ratio based on the transmission performance between the torque produced at the actuator and the torque applied to the load. Load matching is an important index which affects jumping performance and reflects the capability of supporting a weight or mass. It also affects the distributing of the center of gravity (COG. Regarding jumping robot as a redundant manipulator with a load at end-effector, inertia matching can be applied to optimize load matching for jumping robot. Inertia matching manipulability and directional manipulability are easy to analyze and optimize the load matching parameters. A 5th order polynomial function is defined to plan COG trajectory of jumping motion, taking into account the constraint conditions of both velocity and acceleration. Finally, the numerical simulation of vertical jumping and experimental results show inertia matching is in direct proportion to jumping height, and inertia matching manipulability is a valid method to load matching optimization and conceptual design of robot.

  8. Biological warfare agents

    Directory of Open Access Journals (Sweden)

    Duraipandian Thavaselvam

    2010-01-01

    Full Text Available The recent bioterrorist attacks using anthrax spores have emphasized the need to detect and decontaminate critical facilities in the shortest possible time. There has been a remarkable progress in the detection, protection and decontamination of biological warfare agents as many instrumentation platforms and detection methodologies are developed and commissioned. Even then the threat of biological warfare agents and their use in bioterrorist attacks still remain a leading cause of global concern. Furthermore in the past decade there have been threats due to the emerging new diseases and also the re-emergence of old diseases and development of antimicrobial resistance and spread to new geographical regions. The preparedness against these agents need complete knowledge about the disease, better research and training facilities, diagnostic facilities and improved public health system. This review on the biological warfare agents will provide information on the biological warfare agents, their mode of transmission and spread and also the detection systems available to detect them. In addition the current information on the availability of commercially available and developing technologies against biological warfare agents has also been discussed. The risk that arise due to the use of these agents in warfare or bioterrorism related scenario can be mitigated with the availability of improved detection technologies.

  9. Probability matching in perceptrons: Effects of conditional dependence and linear nonseparability.

    Science.gov (United States)

    Dawson, Michael R W; Gupta, Maya

    2017-01-01

    Probability matching occurs when the behavior of an agent matches the likelihood of occurrence of events in the agent's environment. For instance, when artificial neural networks match probability, the activity in their output unit equals the past probability of reward in the presence of a stimulus. Our previous research demonstrated that simple artificial neural networks (perceptrons, which consist of a set of input units directly connected to a single output unit) learn to match probability when presented different cues in isolation. The current paper extends this research by showing that perceptrons can match probabilities when presented simultaneous cues, with each cue signaling different reward likelihoods. In our first simulation, we presented up to four different cues simultaneously; the likelihood of reward signaled by the presence of one cue was independent of the likelihood of reward signaled by other cues. Perceptrons learned to match reward probabilities by treating each cue as an independent source of information about the likelihood of reward. In a second simulation, we violated the independence between cues by making some reward probabilities depend upon cue interactions. We did so by basing reward probabilities on a logical combination (AND or XOR) of two of the four possible cues. We also varied the size of the reward associated with the logical combination. We discovered that this latter manipulation was a much better predictor of perceptron performance than was the logical structure of the interaction between cues. This indicates that when perceptrons learn to match probabilities, they do so by assuming that each signal of a reward is independent of any other; the best predictor of perceptron performance is a quantitative measure of the independence of these input signals, and not the logical structure of the problem being learned.

  10. Agent-Based Optimization

    CERN Document Server

    Jędrzejowicz, Piotr; Kacprzyk, Janusz

    2013-01-01

    This volume presents a collection of original research works by leading specialists focusing on novel and promising approaches in which the multi-agent system paradigm is used to support, enhance or replace traditional approaches to solving difficult optimization problems. The editors have invited several well-known specialists to present their solutions, tools, and models falling under the common denominator of the agent-based optimization. The book consists of eight chapters covering examples of application of the multi-agent paradigm and respective customized tools to solve  difficult optimization problems arising in different areas such as machine learning, scheduling, transportation and, more generally, distributed and cooperative problem solving.

  11. Covariant diagrams for one-loop matching

    CERN Document Server

    Zhang, Zhengkang

    2016-01-01

    We present a diagrammatic formulation of recently-revived covariant functional approaches to one-loop matching from an ultraviolet (UV) theory to a low-energy effective field theory. Various terms following from a covariant derivative expansion (CDE) are represented by diagrams which, unlike conventional Feynman diagrams, involve gauge-covariant quantities and are thus dubbed "covariant diagrams." The use of covariant diagrams helps organize and simplify one-loop matching calculations, which we illustrate with examples. Of particular interest is the derivation of UV model-independent universal results, which reduce matching calculations of specific UV models to applications of master formulas. We show how such derivation can be done in a more concise manner than the previous literature, and discuss how additional structures that are not directly captured by existing universal results, including mixed heavy-light loops, open covariant derivatives, and mixed statistics, can be easily accounted for.

  12. Sidescan Sonar Image Matching Using Cross Correlation

    DEFF Research Database (Denmark)

    Thisen, Erik; Sørensen, Helge Bjarup Dissing; Stage, Bjarne

    2003-01-01

    When surveying an area for sea mines with a sidescan sonar, the ability to find the same object in two different sonar images is helpful to determine the nature of the object. The main problem with matching two sidescan sonar images is that a scene changes appearance when viewed from different...... viewpoints. This paper presents a novel approach for matching two sidescan sonar images. The method first registers the two images to ground, then uses the cross correlation of the object positions on the seabed to find the correct displacement between the two images. In order to correct any minor...... displacements of the relative objects position as a result of the ground registration, the object position is given an area of influence. The method is compared to an existing method for matching sidescan sonar images based on hypothetical reasoning. The two methods are compared on a number of real sidescan...

  13. Matching a wavelet to ECG signal.

    Science.gov (United States)

    Takla, George F; Nair, Bala G; Loparo, Kenneth A

    2006-01-01

    In this paper we develop an approach to synthesize a wavelet that matches the ECG signal. Matching a wavelet to a signal of interest has potential advantages in extracting signal features with greater accuracy, particularly when the signal is contaminated with noise. The approach that we have taken is based on the theoretical work done by Chapa and Rao. We have applied their technique to a noise-free ECG signal representing one cardiac cycle. Results indicate that a matched wavelet, that was able to capture the broad ECG features, could be obtained. Such a wavelet could be used to extract ECG features such as QRS complexes and P&T waves with greater accuracy.

  14. Multi scale feature based matched filter processing

    Institute of Scientific and Technical Information of China (English)

    LI Jun; HOU Chaohuan

    2004-01-01

    Using the extreme difference of self-similarity and kurtosis at large level scale of wavelet transform approximation between the PTFM (Pulse Trains of Frequency Modulated)signals and its reverberation, a feature-based matched filter method using the classify-beforedetect paragriam is proposed to improve the detection performance in reverberation and multipath environments. Processing the data of lake-trails showed that the processing gain of the proposed method is bigger than that of matched filter about 10 dB. In multipath environments, detection performance of matched filter become badly poorer, while that of the proposed method is improved better. It shows that the method is much more robust with the effect of multipath.

  15. Covariant diagrams for one-loop matching

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Zhengkang [Michigan Univ., Ann Arbor, MI (United States). Michigan Center for Theoretical Physics; Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)

    2016-10-15

    We present a diagrammatic formulation of recently-revived covariant functional approaches to one-loop matching from an ultraviolet (UV) theory to a low-energy effective field theory. Various terms following from a covariant derivative expansion (CDE) are represented by diagrams which, unlike conventional Feynman diagrams, involve gaugecovariant quantities and are thus dubbed ''covariant diagrams.'' The use of covariant diagrams helps organize and simplify one-loop matching calculations, which we illustrate with examples. Of particular interest is the derivation of UV model-independent universal results, which reduce matching calculations of specific UV models to applications of master formulas. We show how such derivation can be done in a more concise manner than the previous literature, and discuss how additional structures that are not directly captured by existing universal results, including mixed heavy-light loops, open covariant derivatives, and mixed statistics, can be easily accounted for.

  16. Efficient Catalog Matching with Dropout Detection

    CERN Document Server

    Fan, Dongwei; Szalay, Alexander S; Cui, Chenzhou; Zhao, Yongheng

    2014-01-01

    Not only source catalogs are extracted from astronomy observations. Their sky coverage is always carefully recorded and used in statistical analyses, such as correlation and luminosity function studies. Here we present a novel method for catalog matching, which inherently builds on the coverage information for better performance and completeness. A modified version of the Zones Algorithm is introduced for matching partially overlapping observations, where irrelevant parts of the data are excluded up front for efficiency. Our design enables searches to focus on specific areas on the sky to further speed up the process. Another important advantage of the new method over traditional techniques is its ability to quickly detect dropouts, i.e., the missing components that are in the observed regions of the celestial sphere but did not reach the detection limit in some observations. These often provide invaluable insight into the spectral energy distribution of the matched sources but rarely available in traditional...

  17. Unification and Matching on Compressed Terms

    CERN Document Server

    Gascón, Adrià; Schmidt-Schauß, Manfred

    2010-01-01

    Term unification plays an important role in many areas of computer science, especially in those related to logic. The universal mechanism of grammar-based compression for terms, in particular the so-called Singleton Tree Grammars (STG), have recently drawn considerable attention. Using STGs, terms of exponential size and height can be represented in linear space. Furthermore, the term representation by directed acyclic graphs (dags) can be efficiently simulated. The present paper is the result of an investigation on term unification and matching when the terms given as input are represented using different compression mechanisms for terms such as dags and Singleton Tree Grammars. We describe a polynomial time algorithm for context matching with dags, when the number of different context variables is fixed for the problem. For the same problem, NP-completeness is obtained when the terms are represented using the more general formalism of Singleton Tree Grammars. For first-order unification and matching polynom...

  18. INFORMATION SYSTEMS AUDIT CURRICULA CONTENT MATCHING

    Directory of Open Access Journals (Sweden)

    Vasile-Daniel CARDOȘ

    2014-11-01

    Full Text Available Financial and internal auditors must cope with the challenge of performing their mission in technology enhanced environment. In this article we match the information technology description found in the International Federation of Accountants (IFAC and the Institute of Internal Auditors (IIA curricula against the Model Curriculum issued by the Information Systems Audit and Control Association (ISACA. By reviewing these three curricula, we matched the content in the ISACA Model Curriculum with the IFAC International Education Practice Statement 2 and the IIAs’ Global Model Internal Audit Curriculum. In the IFAC and IIA Curriculum there are 16 content elements, out of 19 possible, which match, in their description, the ISACA Model Curriculum’s content. We noticed that a candidate who graduates an IFAC or IIA compliant program acquire IS auditing competences similar to the specific content of the ISACA model curriculum but less than the requirements for a professional information systems auditor.

  19. A medium resolution fingerprint matching system

    Directory of Open Access Journals (Sweden)

    Ayman Mohammad Bahaa-Eldin

    2013-09-01

    Full Text Available In this paper, a novel minutiae based fingerprint matching system is proposed. The system is suitable for medium resolution fingerprint images obtained by low cost commercial sensors. The paper presents a new thinning algorithm, a new features extraction and representation, and a novel feature distance matching algorithm. The proposed system is rotation and translation invariant and is suitable for complete or partial fingerprint matching. The proposed algorithms are optimized to be executed on low resource environments both in CPU power and memory space. The system was evaluated using a standard fingerprint dataset and good performance and accuracy were achieved under certain image quality requirements. In addition, the proposed system was compared favorably to that of the state of the art systems.

  20. Anatomy Ontology Matching Using Markov Logic Networks

    Directory of Open Access Journals (Sweden)

    Chunhua Li

    2016-01-01

    Full Text Available The anatomy of model species is described in ontologies, which are used to standardize the annotations of experimental data, such as gene expression patterns. To compare such data between species, we need to establish relationships between ontologies describing different species. Ontology matching is a kind of solutions to find semantic correspondences between entities of different ontologies. Markov logic networks which unify probabilistic graphical model and first-order logic provide an excellent framework for ontology matching. We combine several different matching strategies through first-order logic formulas according to the structure of anatomy ontologies. Experiments on the adult mouse anatomy and the human anatomy have demonstrated the effectiveness of proposed approach in terms of the quality of result alignment.

  1. Improved Stereo Matching With Boosting Method

    Directory of Open Access Journals (Sweden)

    Shiny B

    2015-06-01

    Full Text Available Abstract This paper presents an approach based on classification for improving the accuracy of stereo matching methods. We propose this method for occlusion handling. This work employs classification of pixels for finding the erroneous disparity values. Due to the wide applications of disparity map in 3D television medical imaging etc the accuracy of disparity map has high significance. An initial disparity map is obtained using local or global stereo matching methods from the input stereo image pair. The various features for classification are computed from the input stereo image pair and the obtained disparity map. Then the computed feature vector is used for classification of pixels by using GentleBoost as the classification method. The erroneous disparity values in the disparity map found by classification are corrected through a completion stage or filling stage. A performance evaluation of stereo matching using AdaBoostM1 RUSBoost Neural networks and GentleBoost is performed.

  2. Achromatic hues matching in graphic printing

    Directory of Open Access Journals (Sweden)

    Martinia Ira Glogar

    2015-05-01

    Full Text Available Some problems in process of dark achromatic hues reproduction and matching in graphic industry, where requests on colour matching are very high, are discussed. When achromatic hues is concerned, in terms of high requests on colour parameter matching, right on time production, quick response and high quality standards requests, the production and moreover the reproduction is subject to many variables and represent the manufacturing process of high complexity. The aim is to achieve a graphic reproduction with defined colour parameters and remission characteristics as close as possible to a standard. In this paper, black and grey hues characterized with average lightness value L*≤ 20, were analysed. Subjective as well as objective colour evaluation have been performed and results of colour differences obtained by two colour difference formulae, CIELAB and CMC(l:c have been compared.

  3. 78 FR 48169 - Privacy Act of 1974; CMS Computer Match No. 2013-02; HHS Computer Match No. 1306; DoD-DMDC Match...

    Science.gov (United States)

    2013-08-07

    ... Services Privacy Act of 1974; CMS Computer Match No. 2013-02; HHS Computer Match No. 1306; DoD-DMDC Match... Services (CMS). ACTION: Notice of Computer Matching Program (CMP). SUMMARY: In accordance with the requirements of the Privacy Act of 1974, as amended, this notice establishes a CMP that CMS plans to...

  4. Distributed Human Resource Redistribution System Based on Agent and Ontology

    Institute of Scientific and Technical Information of China (English)

    Li Xiangquan; Wang Ningsheng; Long Wen

    2006-01-01

    A computer system for human resource (HR) redistribution system is presented to solve the balance problem of the "surplus resources" and "surplus tasks" among a group of project units. The system architecture is designed in a compositional manner using the elements of agent technology and knowledge technology. A combination of generic agent models, ontology and knowledge provides an effective approach to address the dynamic, distributed and knowledge-intensive characters of the HR management. In the system, the broker agent acting as intermediary provides matchmaking services to the domain agents, and the individual domain agents communicate directly with each other. The HR ontology provides the semantic match of the surplus task and the surplus resource. Finally, an application example is presented to illustrate the achieved solution for a concrete scenario. This novel way offers a comprehensive HR exchange solution and is suitable for both intra-organizational and inter-organizational HR management.

  5. Using crosswell data to enhance history matching

    KAUST Repository

    Ravanelli, Fabio M.

    2014-01-01

    One of the most challenging tasks in the oil industry is the production of reliable reservoir forecast models. Due to different sources of uncertainties in the numerical models and inputs, reservoir simulations are often only crude approximations of the reality. This problem is mitigated by conditioning the model with data through data assimilation, a process known in the oil industry as history matching. Several recent advances are being used to improve history matching reliability, notably the use of time-lapse data and advanced data assimilation techniques. One of the most promising data assimilation techniques employed in the industry is the ensemble Kalman filter (EnKF) because of its ability to deal with non-linear models at reasonable computational cost. In this paper we study the use of crosswell seismic data as an alternative to 4D seismic surveys in areas where it is not possible to re-shoot seismic. A synthetic reservoir model is used in a history matching study designed better estimate porosity and permeability distributions and improve the quality of the model to predict future field performance. This study is divided in three parts: First the use of production data only is evaluated (baseline for benchmark). Second the benefits of using production and 4D seismic data are assessed. Finally, a new conceptual idea is proposed to obtain time-lapse information for history matching. The use of crosswell time-lapse seismic tomography to map velocities in the interwell region is demonstrated as a potential tool to ensure survey reproducibility and low acquisition cost when compared with full scale surface surveys. Our numerical simulations show that the proposed method provides promising history matching results leading to similar estimation error reductions when compared with conventional history matched surface seismic data.

  6. Transverse Beam Matching Application for SNS

    CERN Document Server

    Chu, Chungming; Jeon Dong Oh; Plum, Michael

    2005-01-01

    An automated transverse beam matching application has been developed for the Spallation Neutron Source (SNS) beam transport lines. The application is written within the XAL Java framework and the matching algorithm is based on the simplex optimization method. Other functionalities, such as emittance calculated from profile monitor measurements (adopted from a LANL Fortran code), profile monitor display, and XAL on-line model calculation, are also provided by the application. Test results obtained during the SNS warm linac commissioning will be reported. A comparison between the emittances obtained from this application and an independent Trace-3D routine will also be shown.

  7. Similarity Based Semantic Web Service Match

    Science.gov (United States)

    Peng, Hui; Niu, Wenjia; Huang, Ronghuai

    Semantic web service discovery aims at returning the most matching advertised services to the service requester by comparing the semantic of the request service with an advertised service. The semantic of a web service are described in terms of inputs, outputs, preconditions and results in Ontology Web Language for Service (OWL-S) which formalized by W3C. In this paper we proposed an algorithm to calculate the semantic similarity of two services by weighted averaging their inputs and outputs similarities. Case study and applications show the effectiveness of our algorithm in service match.

  8. Towards the perfect prediction of soccer matches

    CERN Document Server

    Heuer, Andreas

    2012-01-01

    We present a systematic approach to the prediction of soccer matches. First, we show that the information about chances for goals is by far more informative than about the actual results. Second, we present a multivariate regression approach and show how the prediction quality increases with increasing information content. This prediction quality can be explicitly expressed in terms of just two parameters. Third, by disentangling the systematic and random components of soccer matches we can identify the optimum level of predictability. These concepts are exemplified for the German Bundesliga.

  9. Famous face recognition, face matching, and extraversion.

    Science.gov (United States)

    Lander, Karen; Poyarekar, Siddhi

    2015-01-01

    It has been previously established that extraverts who are skilled at interpersonal interaction perform significantly better than introverts on a face-specific recognition memory task. In our experiment we further investigate the relationship between extraversion and face recognition, focusing on famous face recognition and face matching. Results indicate that more extraverted individuals perform significantly better on an upright famous face recognition task and show significantly larger face inversion effects. However, our results did not find an effect of extraversion on face matching or inverted famous face recognition.

  10. Line matching for automatic change detection algorithm

    Science.gov (United States)

    Dhollande, Jérôme; Monnin, David; Gond, Laetitia; Cudel, Christophe; Kohler, Sophie; Dieterlen, Alain

    2012-06-01

    During foreign operations, Improvised Explosive Devices (IEDs) are one of major threats that soldiers may unfortunately encounter along itineraries. Based on a vehicle-mounted camera, we propose an original approach by image comparison to detect signicant changes on these roads. The classic 2D-image registration techniques do not take into account parallax phenomena. The consequence is that the misregistration errors could be detected as changes. According to stereovision principles, our automatic method compares intensity proles along corresponding epipolar lines by extrema matching. An adaptive space warping compensates scale dierence in 3D-scene. When the signals are matched, the signal dierence highlights changes which are marked in current video.

  11. General Phase Matching Condition for Quantum Searching

    CERN Document Server

    Long, G L; Sun, Y; Long, Gui-Lu; Xiao, Li; Sun, Yang

    2001-01-01

    We present a general phase matching condition for the quantum search algorithm with arbitrary unitary transformation and arbitrary phase rotations. We show by an explicit expression that the phase matching condition depends both on the unitary transformation U and the initial state. Assuming that the initial amplitude distribution is an arbitrary superposition sin\\theta_0 |1> + cos\\theta_0 e^{i\\delta} |2> with |1> = {1 / sin\\beta} \\sum_k |\\tau_k> and |2> = {1 / cos\\beta} \\sum_{i \

  12. Collective emotion dynamics in chats with agents, moderators and Bots

    CERN Document Server

    Šuvakov, M

    2014-01-01

    Using agent-directed simulations, we investigate fluctuations in the collective emotional states on a chat network where agents interchange messages with a fixed number of moderators and emotional Bot. To design a realistic chat system, the interaction rules and some statistical parameters, as well as the agent's attributes, are inferred from the empirical chat channel \\texttt{Ubuntu}. In the simulations, the Bot's emotion is fixed; the moderators tune the level of its activity by passing a fraction $\\epsilon$ of messages to the Bot. At $\\epsilon \\gtrsim 0$, the collective emotional state matching the Bot's emotion polarity gradually arises; the average growth rate of the dominant emotional charge serves as an order parameter. Due to self-organizing effects, the collective dynamics is more explosive when positive emotions arise by positive Bot than the onset of negative emotions in the presence of negative Bot at the same $\\epsilon$. Furthermore, when the emotions matching the Bot's emotion polarity are sprea...

  13. Health care agents

    Science.gov (United States)

    ... make decisions during a stressful time. Your agent's duty is to see that your wishes are followed. ... Philadelphia, PA: Elsevier; 2016:chap 5. Zorowitz RA. Ethics. In: Ham RJ Jr, Sloane PD, Warshaw GA, ...

  14. Agent Standards Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The innovation of the work herein proposed is the development of standards for software autonomous agents. These standards are essential to achieve software...

  15. Steroidal neuromuscular blocking agents

    NARCIS (Netherlands)

    Wierda, JMKH; Mori, K; Ohmura, A; Toyooka, H; Hatano, Y; Shingu, K; Fukuda, K

    1998-01-01

    Since 1964 approximately 20 steroidal neuromuscular blocking agents have been evaluated clinically. Pancuronium, a bisquaternary compound designed on the drawingboard, was the first steroidal relaxant introduced into clinical practice worldwide in the 1970's. Although a major improvement, pancuroniu

  16. Distortion analysis on binary representation of minutiae based fingerprint matching for match-on-card

    CSIR Research Space (South Africa)

    Mlambo, CS

    2016-12-01

    Full Text Available , time efficient implementations, security and efficient space of the match on card. In this paper presented is the survey on the methods used to improve the accuracy in matching and memory usage by representing minutiae points in binary. In addition...

  17. Improved Approximate String Matching and Regular Expression Matching on Ziv-Lempel Compressed Texts

    DEFF Research Database (Denmark)

    Bille, Philip; Fagerberg, Rolf; Gørtz, Inge Li

    2009-01-01

    We study the approximate string matching and regular expression matching problem for the case when the text to be searched is compressed with the Ziv-Lempel adaptive dictionary compression schemes. We present a time-space trade-off that leads to algorithms improving the previously known...

  18. POINT PATTERN MATCHING ALGORITHM BASED ON POINT PAIR TOPOLOGICAL CHARACTERISTICS AND SPECTRAL MATCHING

    Institute of Scientific and Technical Information of China (English)

    Lu Chunyan; Zou Huanxin; Zhao Jian; Zhou Shilin

    2012-01-01

    Most of the Point Pattern Matching (PPM) algorithm performs poorly when the noise of the point's position and outliers exist.This paper presents a novel and robust PPM algorithm which combined Point Pair Topological Characteristics (PPTC) and Spectral Matching (SM) together to solve the afore mentioned issues.In which PPTC,a new shape descriptor,is firstly proposed.A new comparability measurement based on PPTC is defined as the matching probability.Finally,the correct matching results are achieved by the spectral matching method.The synthetic data experiments show its robustness by comparing with the other state-of-art algorithms and the real world data experiments show its effectiveness.

  19. Manifold Matching for High-Dimensional Pattern Recognition

    OpenAIRE

    HOTTA, Seiji

    2008-01-01

    In this chapter manifold matching for high-dimensional pattern classification was described. The topics described in this chapter were summarized as follows: The meaning and effectiveness of manifold matching The similarity between various classifiers from the point of view of manifold matching Accuracy improvement for manifold matching Learning rules for manifold matching Experimental results on handwritten digit datasets showed that manifold matching achieved lower error rates than other cl...

  20. History matching through dynamic decision-making.

    Science.gov (United States)

    Cavalcante, Cristina C B; Maschio, Célio; Santos, Antonio Alberto; Schiozer, Denis; Rocha, Anderson

    2017-01-01

    History matching is the process of modifying the uncertain attributes of a reservoir model to reproduce the real reservoir performance. It is a classical reservoir engineering problem and plays an important role in reservoir management since the resulting models are used to support decisions in other tasks such as economic analysis and production strategy. This work introduces a dynamic decision-making optimization framework for history matching problems in which new models are generated based on, and guided by, the dynamic analysis of the data of available solutions. The optimization framework follows a 'learning-from-data' approach, and includes two optimizer components that use machine learning techniques, such as unsupervised learning and statistical analysis, to uncover patterns of input attributes that lead to good output responses. These patterns are used to support the decision-making process while generating new, and better, history matched solutions. The proposed framework is applied to a benchmark model (UNISIM-I-H) based on the Namorado field in Brazil. Results show the potential the dynamic decision-making optimization framework has for improving the quality of history matching solutions using a substantial smaller number of simulations when compared with a previous work on the same benchmark.

  1. Matching Instruction to Children's Thinking about Division.

    Science.gov (United States)

    Weiland, Linnea

    1985-01-01

    Provides examples which suggest the importance of giving children opportunities to create their own arguments and of allowing them the opportunity to verbalize these arguments in clinical interviews. Also indicates that if time is spent interviewing children individually, instruction can be matched to the way they think. (JN)

  2. Decentralized trade with bargaining and voluntary matching

    DEFF Research Database (Denmark)

    Tranæs, Torben; Sloth, Birgitte; Hendon, Ebbe

    1994-01-01

    Rubinstein and Wolinsky (1990) study a market with one seller, two buyers, and voluntary matching. Both the competitive outcomepc and the bilateral bargaining outcomepb are possible in subgame perfect equilibrium. We consider two variations. First, if there is a cost larger thanpc−pc to the seller...

  3. Performance Evaluation of Tree Object Matching

    DEFF Research Database (Denmark)

    Somchaipeng, Kerawit; Sporring, Jon; Kreiborg, Sven;

    2005-01-01

    Multi-Scale Singularity Trees (MSSTs) represents the deep structure of images in scale-space and provide both the connections between image features at different scales and their strengths. In this report we present and evaluate an algorithm that exploits the MSSTs for image matching. Two version...

  4. Mix 'n' match

    Energy Technology Data Exchange (ETDEWEB)

    Ross, P.D.

    1985-04-01

    This paper discusses the service department as a marketing organization, using the concept of marketing mix as the main tool of analysis. Sections about other market related items such as competition, customer retention, database and market research are discussed. The paper shows how, in an increasingly aware way, the department is finding the right marketing mix to match the needs of the customer.

  5. Matching Expectations for Successful University Student Volunteering

    Science.gov (United States)

    Paull, Megan; Omari, Maryam; MacCallum, Judith; Young, Susan; Walker, Gabrielle; Holmes, Kirsten; Haski-Leventha, Debbie; Scott, Rowena

    2017-01-01

    Purpose: The purpose of this paper is to demonstrate the importance of expectation formation and matching for university student volunteers and their hosts. Design/methodology/approach: This research involved a multi-stage data collection process including interviews with student volunteers, and university and host representatives from six…

  6. Asynchronous event-based binocular stereo matching.

    Science.gov (United States)

    Rogister, Paul; Benosman, Ryad; Ieng, Sio-Hoi; Lichtsteiner, Patrick; Delbruck, Tobi

    2012-02-01

    We present a novel event-based stereo matching algorithm that exploits the asynchronous visual events from a pair of silicon retinas. Unlike conventional frame-based cameras, recent artificial retinas transmit their outputs as a continuous stream of asynchronous temporal events, in a manner similar to the output cells of the biological retina. Our algorithm uses the timing information carried by this representation in addressing the stereo-matching problem on moving objects. Using the high temporal resolution of the acquired data stream for the dynamic vision sensor, we show that matching on the timing of the visual events provides a new solution to the real-time computation of 3-D objects when combined with geometric constraints using the distance to the epipolar lines. The proposed algorithm is able to filter out incorrect matches and to accurately reconstruct the depth of moving objects despite the low spatial resolution of the sensor. This brief sets up the principles for further event-based vision processing and demonstrates the importance of dynamic information and spike timing in processing asynchronous streams of visual events.

  7. Minimal Mimicry: Mere Effector Matching Induces Preference

    Science.gov (United States)

    Sparenberg, Peggy; Topolinski, Sascha; Springer, Anne; Prinz, Wolfgang

    2012-01-01

    Both mimicking and being mimicked induces preference for a target. The present experiments investigate the minimal sufficient conditions for this mimicry-preference link to occur. We argue that mere effector matching between one's own and the other person's movement is sufficient to induce preference, independent of which movement is actually…

  8. History Matching: Towards Geologically Reasonable Models

    DEFF Research Database (Denmark)

    Melnikova, Yulia; Cordua, Knud Skou; Mosegaard, Klaus

    This work focuses on the development of a new method for history matching problem that through a deterministic search finds a geologically feasible solution. Complex geology is taken into account evaluating multiple point statistics from earth model prototypes - training images. Further a functio...

  9. The Effectiveness of Advertising Matching Purchase Motivation

    NARCIS (Netherlands)

    J. Loef; G. Antonides (Gerrit); W.F. van Raaij (Fred)

    2001-01-01

    textabstractSeveral authors have proposed frameworks to help advertisers predict and plan advertising effectiveness. Rossiter and Percy's advertising grid (1997) recommends that the ad appeal should match the purchase motivation or attitude base. They suggest that for utilitarian brands informationa

  10. Impedance-matched drilling telemetry system

    Science.gov (United States)

    Normann, Randy A.; Mansure, Arthur J.

    2008-04-22

    A downhole telemetry system that uses inductance or capacitance as a mode through which signal is communicated across joints between assembled lengths of pipe wherein efficiency of signal propagation through a drill string, for example, over multiple successive pipe segments is enhanced through matching impedances associated with the various telemetry system components.

  11. Making better partner matches in brand alliances

    NARCIS (Netherlands)

    B. van den Bergh (Bram)

    2014-01-01

    markdownabstract__Abstract__ With many brand alliances failing to add value, understanding the factors that make for a strong pairing becomes essential. Appropriately, harnessing techniques similar to those used by dating sites to determine whether people will make a good match has helped reveal th

  12. Oscillating Rim Hook Tableaux and Colored Matchings

    CERN Document Server

    Chen, William Y C

    2011-01-01

    Motivated by the question of finding a type B analogue of the bijection between oscillating tableaux and matchings, we find a correspondence between oscillating m-rim hook tableaux and m-colored matchings, where m is a positive integer. An oscillating m-rim hook tableau is defined as a sequence $(\\lambda^0,\\lambda^1,...,\\lambda^{2n})$ of Young diagrams starting with the empty shape and ending with the empty shape such that $\\lambda^{i}$ is obtained from $\\lambda^{i-1}$ by adding an m-rim hook or by deleting an m-rim hook. Our bijection relies on the generalized Schensted algorithm due to White. An oscillating 2-rim hook tableau is also called an oscillating domino tableau. When we restrict our attention to two column oscillating domino tableaux of length 2n, we are led to a bijection between such tableaux and noncrossing 2-colored matchings on $\\{1, 2,..., 2n\\}$, which are counted by the product $C_nC_{n+1}$ of two consecutive Catalan numbers. A 2-colored matching is noncrossing if there are no two arcs of th...

  13. Matching in an Undisturbed Natural Human Environment

    Science.gov (United States)

    McDowell, J. J.; Caron, Marcia L.

    2010-01-01

    Data from the Oregon Youth Study, consisting of the verbal behavior of 210 adolescent boys determined to be at risk for delinquency (targets) and 210 of their friends (peers), were analyzed for their conformance to the complete family of matching theory equations in light of recent findings from the basic science, and using recently developed…

  14. Regular Expression Matching and Operational Semantics

    Directory of Open Access Journals (Sweden)

    Asiri Rathnayake

    2011-08-01

    Full Text Available Many programming languages and tools, ranging from grep to the Java String library, contain regular expression matchers. Rather than first translating a regular expression into a deterministic finite automaton, such implementations typically match the regular expression on the fly. Thus they can be seen as virtual machines interpreting the regular expression much as if it were a program with some non-deterministic constructs such as the Kleene star. We formalize this implementation technique for regular expression matching using operational semantics. Specifically, we derive a series of abstract machines, moving from the abstract definition of matching to increasingly realistic machines. First a continuation is added to the operational semantics to describe what remains to be matched after the current expression. Next, we represent the expression as a data structure using pointers, which enables redundant searches to be eliminated via testing for pointer equality. From there, we arrive both at Thompson's lockstep construction and a machine that performs some operations in parallel, suitable for implementation on a large number of cores, such as a GPU. We formalize the parallel machine using process algebra and report some preliminary experiments with an implementation on a graphics processor using CUDA.

  15. 45 CFR 1301.20 - Matching requirements.

    Science.gov (United States)

    2010-10-01

    ... Public Welfare Regulations Relating to Public Welfare (Continued) OFFICE OF HUMAN DEVELOPMENT SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES THE ADMINISTRATION FOR CHILDREN, YOUTH AND FAMILIES, HEAD START PROGRAM HEAD START GRANTS ADMINISTRATION Federal Financial Assistance § 1301.20 Matching requirements. (a...

  16. Dual Butterfly Match Filter VLSI Design

    Institute of Scientific and Technical Information of China (English)

    LIU Zhenyu; HAN Yueqiu

    2001-01-01

    Match filter is widely used in realtime signal processing, especially in Radar Signal Processing. This paper provides a novel ASIC design,which not only saves resource, but also improves thethroughput of the system. This ASIC is specially designed for Radar Pulse Compression. Certainly it canalso be used in other circumstances, such as FIR filter.

  17. Predictive mean matching imputation of semicontinuous variables

    NARCIS (Netherlands)

    Vink, G.; Frank, L.E.; Pannekoek, J.; Buuren, S. van

    2014-01-01

    Multiple imputation methods properly account for the uncertainty of missing data. One of those methods for creating multiple imputations is predictive mean matching (PMM), a general purpose method. Little is known about the performance of PMM in imputing non-normal semicontinuous data (skewed data w

  18. Secure matching of Dutch car license plates

    NARCIS (Netherlands)

    Sunil, A.B.; Erkiny, Z.; Veugenyz, T.

    2016-01-01

    License plate matching plays an important role in applications like law enforcement, traffic management and road pricing, where the plate is first recognized and then compared to a database of authorized vehicle registration plates. Unfortunately, there are several privacy related issues that should

  19. Revisiting the Concept of "Style Match"

    Science.gov (United States)

    Zhang, Li-fang; Sternberg, Robert J.; Fan, Jieqiong

    2013-01-01

    Background: Intellectual style, an encompassing term for such constructs as learning style, teaching style, teaching approach, and thinking style, refers to one's preferred way of processing information. For the past several decades, whether or not there is a need for a match between teachers' teaching styles and students' learning styles has been…

  20. A question of matching rather than scheduling

    NARCIS (Netherlands)

    van de Velde, S.L.

    1995-01-01

    Proper scheduling maintenance for Air Force C-130 aircraft involves the prevention of mismatches concerning the availability of the aircraft and a new wing kit which would prolong its use. Scheduling maintenance problems include the designation of wing kits in the production sequence to match for a

  1. The Complexity of Approximately Counting Stable Matchings

    CERN Document Server

    Chebolu, Prasad; Martin, Russell

    2010-01-01

    We investigate the complexity of approximately counting stable matchings in the $k$-attribute model, where the preference lists are determined by dot products of "preference vectors" with "attribute vectors", or by Euclidean distances between "preference points" and "attribute points". Irving and Leather proved that counting the number of stable matchings in the general case is $#P$-complete. Counting the number of stable matchings is reducible to counting the number of downsets in a (related) partial order and is interreducible, in an approximation-preserving sense, to a class of problems that includes counting the number of independent sets in a bipartite graph ($#BIS$). It is conjectured that no FPRAS exists for this class of problems. We show this approximation-preserving interreducibilty remains even in the restricted $k$-attribute setting when $k \\geq 3$ (dot products) or $k \\geq 2$ (Euclidean distances). Finally, we show it is easy to count the number of stable matchings in the 1-attribute dot-product ...

  2. Making better partner matches in brand alliances

    NARCIS (Netherlands)

    B. van den Bergh (Bram)

    2014-01-01

    markdownabstract__Abstract__ With many brand alliances failing to add value, understanding the factors that make for a strong pairing becomes essential. Appropriately, harnessing techniques similar to those used by dating sites to determine whether people will make a good match has helped reveal th

  3. Language style matching and police interrogation outcomes

    NARCIS (Netherlands)

    Richardson, Beth H.; Taylor, Paul J.; Snook, Brent; Conchie, Stacey M.; Bennell, Craig

    2014-01-01

    This research examined the coordination of interrogator and suspects’ verbal behavior in interrogations. Sixty-four police interrogations were examined at the aggregate and utterance level using a measure of verbal mimicry known as Language Style Matching. Analyses revealed an interaction between co

  4. Nonlinear soliton matching between optical fibers

    DEFF Research Database (Denmark)

    Agger, Christian; Sørensen, Simon Toft; Thomsen, Carsten L.

    2011-01-01

    In this Letter, we propose a generic nonlinear coupling coefficient, η2 NL ¼ ηjγ=β2jfiber2=jγ=β2jfiber1, which gives a quantitative measure for the efficiency of nonlinear matching of optical fibers by describing how a fundamental soliton couples from one fiber into another. Specifically, we use η...

  5. Adaptive and compressive matched field processing.

    Science.gov (United States)

    Gemba, Kay L; Hodgkiss, William S; Gerstoft, Peter

    2017-01-01

    Matched field processing is a generalized beamforming method that matches received array data to a dictionary of replica vectors in order to locate one or more sources. Its solution set is sparse since there are considerably fewer sources than replicas. Using compressive sensing (CS) implemented using basis pursuit, the matched field problem is reformulated as an underdetermined, convex optimization problem. CS estimates the unknown source amplitudes using the replica dictionary to best explain the data, subject to a row-sparsity constraint. This constraint selects the best matching replicas within the dictionary when using multiple observations and/or frequencies. For a single source, theory and simulations show that the performance of CS and the Bartlett processor are equivalent for any number of snapshots. Contrary to most adaptive processors, CS also can accommodate coherent sources. For a single and multiple incoherent sources, simulations indicate that CS offers modest localization performance improvement over the adaptive white noise constraint processor. SWellEx-96 experiment data results show comparable performance for both processors when localizing a weaker source in the presence of a stronger source. Moreover, CS often displays less ambiguity, demonstrating it is robust to data-replica mismatch.

  6. A Fast Generic Sequence Matching Algorithm

    CERN Document Server

    Musser, David R

    2008-01-01

    A string matching -- and more generally, sequence matching -- algorithm is presented that has a linear worst-case computing time bound, a low worst-case bound on the number of comparisons (2n), and sublinear average-case behavior that is better than that of the fastest versions of the Boyer-Moore algorithm. The algorithm retains its efficiency advantages in a wide variety of sequence matching problems of practical interest, including traditional string matching; large-alphabet problems (as in Unicode strings); and small-alphabet, long-pattern problems (as in DNA searches). Since it is expressed as a generic algorithm for searching in sequences over an arbitrary type T, it is well suited for use in generic software libraries such as the C++ Standard Template Library. The algorithm was obtained by adding to the Knuth-Morris-Pratt algorithm one of the pattern-shifting techniques from the Boyer-Moore algorithm, with provision for use of hashing in this technique. In situations in which a hash function or random a...

  7. Impedance matching between ventricle and load.

    Science.gov (United States)

    Piene, H

    1984-01-01

    Impedance matching in the cardiovascular system is discussed in light of two models of ventricle and load: a Thevenin equivalent consisting of a hydromotive pressure source and an internal, source resistance and compliance in parallel; and a time-varying compliance filled from a constant pressure source and ejecting into a load of three components, a central resistor, a compliance, and a peripheral resistance. According to the Thevenin analog, the energy source and the load are matched when the load resistance is T/t times the internal source resistance (T is total cycle length, t is systolic time interval). Both from this model and from the variable compliance model it appears that optimum matching between source and load depends on the compliance of the Windkessel, as low compliance shifts the matching load resistance to a low value. Animal experiments (isolated cat hearts) indicated that both left and right ventricles at normal loads work close to their maxima of output hydraulic power, and, according to experiments in the right ventricle, maximum power output is related to load resistance and compliance as predicted by the above models. From an experimentally determined relationship among instantaneous ventricular pressure and volume (right ventricle of isolated cat hearts), an optimum load impedance was calculated on the basis of the assumption that the ratio between stroke work and static, potential energy developed in the ventricular cavity is maximum. The optimum load impedance found by this procedure closely resembles the normal input impedance of the cat lung vessel bed.

  8. Occupational Curricula: The School/Job Match

    Science.gov (United States)

    Cohen, Lee; West, Leonard J.

    1978-01-01

    Substantial gaps often exist between occupational education and actual job duties, dominantly because of technological developments. The schools' response to needed change in curricula has been sluggish, piecemeal, and tardy. Authors suggest a strategy for accomplishing a closer match between school and work, and they illustrate its use in…

  9. Accuracy and robustness evaluation in stereo matching

    Science.gov (United States)

    Nguyen, Duc M.; Hanca, Jan; Lu, Shao-Ping; Schelkens, Peter; Munteanu, Adrian

    2016-09-01

    Stereo matching has received a lot of attention from the computer vision community, thanks to its wide range of applications. Despite of the large variety of algorithms that have been proposed so far, it is not trivial to select suitable algorithms for the construction of practical systems. One of the main problems is that many algorithms lack sufficient robustness when employed in various operational conditions. This problem is due to the fact that most of the proposed methods in the literature are usually tested and tuned to perform well on one specific dataset. To alleviate this problem, an extensive evaluation in terms of accuracy and robustness of state-of-the-art stereo matching algorithms is presented. Three datasets (Middlebury, KITTI, and MPEG FTV) representing different operational conditions are employed. Based on the analysis, improvements over existing algorithms have been proposed. The experimental results show that our improved versions of cross-based and cost volume filtering algorithms outperform the original versions with large margins on Middlebury and KITTI datasets. In addition, the latter of the two proposed algorithms ranks itself among the best local stereo matching approaches on the KITTI benchmark. Under evaluations using specific settings for depth-image-based-rendering applications, our improved belief propagation algorithm is less complex than MPEG's FTV depth estimation reference software (DERS), while yielding similar depth estimation performance. Finally, several conclusions on stereo matching algorithms are also presented.

  10. Revisiting the Concept of "Style Match"

    Science.gov (United States)

    Zhang, Li-fang; Sternberg, Robert J.; Fan, Jieqiong

    2013-01-01

    Background: Intellectual style, an encompassing term for such constructs as learning style, teaching style, teaching approach, and thinking style, refers to one's preferred way of processing information. For the past several decades, whether or not there is a need for a match between teachers' teaching styles and students' learning styles has been…

  11. History Matching in Parallel Computational Environments

    Energy Technology Data Exchange (ETDEWEB)

    Steven Bryant; Sanjay Srinivasan; Alvaro Barrera; Sharad Yadav

    2004-08-31

    In the probabilistic approach for history matching, the information from the dynamic data is merged with the prior geologic information in order to generate permeability models consistent with the observed dynamic data as well as the prior geology. The relationship between dynamic response data and reservoir attributes may vary in different regions of the reservoir due to spatial variations in reservoir attributes, fluid properties, well configuration, flow constrains on wells etc. This implies probabilistic approach should then update different regions of the reservoir in different ways. This necessitates delineation of multiple reservoir domains in order to increase the accuracy of the approach. The research focuses on a probabilistic approach to integrate dynamic data that ensures consistency between reservoir models developed from one stage to the next. The algorithm relies on efficient parameterization of the dynamic data integration problem and permits rapid assessment of the updated reservoir model at each stage. The report also outlines various domain decomposition schemes from the perspective of increasing the accuracy of probabilistic approach of history matching. Research progress in three important areas of the project are discussed: {lg_bullet}Validation and testing the probabilistic approach to incorporating production data in reservoir models. {lg_bullet}Development of a robust scheme for identifying reservoir regions that will result in a more robust parameterization of the history matching process. {lg_bullet}Testing commercial simulators for parallel capability and development of a parallel algorithm for history matching.

  12. Product Substitutability and the Matching Law

    Science.gov (United States)

    Foxall, Gordon R.; James, Victoria K.; Oliveira-Castro, Jorge M.; Ribier, Sarah

    2010-01-01

    The applicability of matching analysis, pioneered in the context of laboratory experiments, to the investigation and interpretation of consumer choice in natural environments is explored by the examination of sequential purchases of four product categories based on information from a panel of British consumers. Over a 52-week period, participants…

  13. Circular block matching based video stabilization

    Science.gov (United States)

    Xu, Lidong; Fu, Fangwen; Lin, Xinggang

    2005-07-01

    Video sequences captured by handheld digital camera need to be stabilized to eliminate the tiresome effects caused by camera"s undesirable shake or jiggle. The key issue of video stabilization is to estimate the global motion parameters between two successive frames. In this paper, a novel circular block matching algorithm is proposed to estimate the global motion parameters. This algorithm can deal with not only translational motion but even large rotational motion. For an appointed circular block in current frame, a four-dimensional rotation invariant feature vector is firstly extracted from it and used to judge if it is an effective block. Then the rotation invariant features based circular block matching process is performed to find the best matching blocks in reference frame for those effective blocks. With the matching results of any two effective blocks, a two-dimensional motion model is constructed to produce one group of frame motion parameters. A statistical method is proposed to calculate the estimated global motion parameters with all groups of global motion parameters. Finally, using the estimated motion parameters as the initial values, an iteration algorithm is introduced to obtain the refined global motion parameters. The experimental results show that the proposed algorithm is excellent in stabilizing frames with even burst global translational and rotational motions.

  14. Generating a Pattern Matching Compiler by Partial Evaluation

    DEFF Research Database (Denmark)

    Jørgensen, Knud Jesper

    1991-01-01

    Datalogi, partial Evaluation, Compiling, denotational Semantics, Pattern Matching, Semantic directed Compiler Generation......Datalogi, partial Evaluation, Compiling, denotational Semantics, Pattern Matching, Semantic directed Compiler Generation...

  15. Optimal affine-invariant matching: performance characterization

    Science.gov (United States)

    Costa, Mauro S.; Haralick, Robert M.; Shapiro, Linda G.

    1992-04-01

    The geometric hashing scheme proposed by Lamdan and Wolfson can be very efficient in a model-based matching system, not only in terms of the computational complexity involved, but also in terms of the simplicity of the method. In a recent paper, we discussed errors that can occur with this method due to quantization, stability, symmetry, and noise problems. These errors make the original geometric hashing technique unsuitable for use on the factory floor. Beginning with an explicit noise model, which the original Lamdan and Wolfson technique lacks, we derived an optimal approach that overcomes these problems. We showed that the results obtained with the new algorithm are clearly better than the results from the original method. This paper addresses the performance characterization of the geometric hashing technique, more specifically the affine-invariant point matching, applied to the problem of recognizing and determining the pose of sheet metal parts. The experiments indicate that with a model having 10 to 14 points, with 2 points of the model undetected and 10 extraneous points detected, and with the model points perturbed by Gaussian noise of standard deviation 3 (0.58 of range), the average amount of computation required to obtain an answer is equivalent to trying 11 of the possible three-point bases. The misdetection rate, measured by the percentage of correct bases matches that fail to verify, is 0.9. The percentage of incorrect bases that successfully produced a match that did verify (false alarm rate) is 13. And, finally, 2 of the experiments failed to find a correct match and verify it. Results for experiments with real images are also presented.

  16. Biological Warfare Agents

    Directory of Open Access Journals (Sweden)

    Dev Vrat Kamboj

    2006-10-01

    Full Text Available There is a long historic record of use of biological warfare (BW agents by warring countriesagainst their enemies. However, the frequency of their use has increased since the beginningof the twentieth century. World war I witnessed the use of anthrax agent against human beingsand animals by Germans, followed by large-scale field trials by Japanese against war prisonersand Chinese population during world war II. Ironically, research and development in biologicalwarfare agents increased tremendously after the Geneva Protocol, signed in 1925, because ofits drawbacks which were overcome by Biological and Toxin Weapons Convention (BTWC in1972. Biological warfare programme took back seat after the 1972 convention but biologicalagents regained their importance after the bioterrorist attacks of anthrax powder in 2001. In thelight of these attacks, many of which turned out to be hoax, general awareness is required aboutbiological warfare agents that can be used against them. This review has been written highlightingimportant biological warfare agents, diseases caused by them, possible therapies and otherprotection measures.

  17. Agent Oriented Programming进展%Advances in Agent Oriented Programming

    Institute of Scientific and Technical Information of China (English)

    王一川; 石纯一

    2002-01-01

    Agent-oriented programming (AOP) is a framework to develop agents, and it aims to link the gap betweentheory and practical in agent research. The core of an AOP framework is its language and semantics. In this paper,we propose the necessary properties which agents should have, and then give a summary and analysis about differentAOP languages based on these properties.

  18. Teaching Tourism Change Agents

    DEFF Research Database (Denmark)

    Stilling Blichfeldt, Bodil; Kvistgaard, Hans-Peter; Hird, John

    2017-01-01

    This article discuss es know ledge, competencies and skills Master’s students should obtain during their academic studies and particularly, the differences between teaching about a topic and teaching to do. This is ex emplified by experiential learning theory and the case of a change management...... course that is part of a Tourism Master’s program, where a major challenge is not only to teach students about change and change agents, but to teach them how change feels and ho w to become change agents. The c hange management course contains an experiment inspired by experiential teaching literature...... and methods. The experiment seeks to make students not only hear/learn about change agency and management, but to make them feel cha nge, hereby enabling them to develop the skills and competencies necessary for them to take on the role as change agent s and thus enable them to play key role s in implementing...

  19. Agents unleashed a public domain look at agent technology

    CERN Document Server

    Wayner, Peter

    1995-01-01

    Agents Unleashed: A Public Domain Look at Agent Technology covers details of building a secure agent realm. The book discusses the technology for creating seamlessly integrated networks that allow programs to move from machine to machine without leaving a trail of havoc; as well as the technical details of how an agent will move through the network, prove its identity, and execute its code without endangering the host. The text also describes the organization of the host's work processing an agent; error messages, bad agent expulsion, and errors in XLISP-agents; and the simulators of errors, f

  20. Systems and methods for measuring component matching

    Science.gov (United States)

    Courter, Kelly J. (Inventor); Slenk, Joel E. (Inventor)

    2006-01-01

    Systems and methods for measuring a contour match between adjacent components are disclosed. In one embodiment, at least two pressure sensors are located between adjacent components. Each pressure sensor is adapted to obtain a pressure measurement at a location a predetermined distance away from the other pressure sensors, and to output a pressure measurement for each sensor location. An output device is adapted to receive the pressure measurements from at least two pressure sensors and display the pressure measurements. In one aspect, the pressure sensors include flexible thin film pressure sensors. In accordance with other aspects of the invention, a method is provided for measuring a contour match between two interfacing components including measuring at least one pressure applied to at least one sensor between the interfacing components.

  1. Improving Schema Matching with Linked Data

    CERN Document Server

    Assaf, Ahmad; Senart, Aline; Follenfant, Corentin; Troncy, Raphaël; Trastour, David

    2012-01-01

    With today's public data sets containing billions of data items, more and more companies are looking to integrate external data with their traditional enterprise data to improve business intelligence analysis. These distributed data sources however exhibit heterogeneous data formats and terminologies and may contain noisy data. In this paper, we present a novel framework that enables business users to semi-automatically perform data integration on potentially noisy tabular data. This framework offers an extension to Google Refine with novel schema matching algorithms leveraging Freebase rich types. First experiments show that using Linked Data to map cell values with instances and column headers with types improves significantly the quality of the matching results and therefore should lead to more informed decisions.

  2. Refraction and wave matching in hyperbolic thermoelasticity

    Directory of Open Access Journals (Sweden)

    Józef Rafa

    2015-03-01

    Full Text Available The subject of the publication concerns the propagation of thermoelastic waves with a particular emphasis on the refraction of waves at the boundary of a layer laying (resting on a halfspace. Analogously to the effect of wave matching, which appears in the case of acoustic and electromagnetic waves, the impedance of a thermoelastic wave has been introduced and its influence and the reflection andrefraction on the boundary at media has been investigated. The model of the medium describes a mutual coupling of mechanical and thermalinteractions with a wave type propagation of heat in media taken into account.[b]Keywords[/b]: hyperbolic thermoelasticity, wave impedance of a thermoelastic medium,refraction and wave matching

  3. Passport officers' errors in face matching.

    Directory of Open Access Journals (Sweden)

    David White

    Full Text Available Photo-ID is widely used in security settings, despite research showing that viewers find it very difficult to match unfamiliar faces. Here we test participants with specialist experience and training in the task: passport-issuing officers. First, we ask officers to compare photos to live ID-card bearers, and observe high error rates, including 14% false acceptance of 'fraudulent' photos. Second, we compare passport officers with a set of student participants, and find equally poor levels of accuracy in both groups. Finally, we observe that passport officers show no performance advantage over the general population on a standardised face-matching task. Across all tasks, we observe very large individual differences: while average performance of passport staff was poor, some officers performed very accurately--though this was not related to length of experience or training. We propose that improvements in security could be made by emphasising personnel selection.

  4. Rotation Invariant Matching of Partial Shoeprints

    Directory of Open Access Journals (Sweden)

    Khan Mahmood Ahmed

    2014-09-01

    Full Text Available In this paper, we propose a solution for the problem of rotated partial shoeprints retrieval based on the combined use of local points of interest and SIFT descriptor. Once the generated features are encoded using SIFT descriptor, matching is carried out using RANSAC to estimate a transformation model and establish the number of its inliers which is then multiplied by the sum of point-to-point Euclidean distances below a hard threshold. We demonstrate that such combination can overcome the issue of retrieval of partial prints in the presence of rotation and noise distortions. Conducted experiments have shown that the proposed solution achieves very good matching results and outperforms similar work in the literature both in terms of performances and complexity

  5. FINGERPRINT MATCHING BASED ON PORE CENTROIDS

    Directory of Open Access Journals (Sweden)

    S. Malathi

    2011-05-01

    Full Text Available In recent years there has been exponential growth in the use of bio- metrics for user authentication applications. Automated Fingerprint Identification systems have become popular tool in many security and law enforcement applications. Most of these systems rely on minutiae (ridge ending and bifurcation features. With the advancement in sensor technology, high resolution fingerprint images (1000 dpi pro- vide micro level of features (pores that have proven to be useful fea- tures for identification. In this paper, we propose a new strategy for fingerprint matching based on pores by reliably extracting the pore features The extraction of pores is done by Marker Controlled Wa- tershed segmentation method and the centroids of each pore are con- sidered as feature vectors for matching of two fingerprint images. Experimental results shows that the proposed method has better per- formance with lower false rates and higher accuracy.

  6. Nearest Neighbour Corner Points Matching Detection Algorithm

    Directory of Open Access Journals (Sweden)

    Zhang Changlong

    2015-01-01

    Full Text Available Accurate detection towards the corners plays an important part in camera calibration. To deal with the instability and inaccuracies of present corner detection algorithm, the nearest neighbour corners match-ing detection algorithms was brought forward. First, it dilates the binary image of the photographed pictures, searches and reserves quadrilateral outline of the image. Second, the blocks which accord with chess-board-corners are classified into a class. If too many blocks in class, it will be deleted; if not, it will be added, and then let the midpoint of the two vertex coordinates be the rough position of corner. At last, it precisely locates the position of the corners. The Experimental results have shown that the algorithm has obvious advantages on accuracy and validity in corner detection, and it can give security for camera calibration in traffic accident measurement.

  7. Flexible Hardware-Based Stereo Matching

    Directory of Open Access Journals (Sweden)

    2009-02-01

    Full Text Available To enable adaptive stereo vision for hardware-based embedded stereo vision systems, we propose a novel technique for implementing a flexible block size, disparity range, and frame rate. By reusing existing resources of a static architecture, rather than dynamic reconfiguration, our technique is compatible with application specific integrated circuit (ASIC as well as field programmable gate array (FPGA implementations. We present the corresponding block diagrams and their implementation in our hardware-based stereo matching architecture. Furthermore, we show the impact of flexible stereo matching on the generated disparity maps for the sum of absolute differences (SADs, rank, and census transform algorithms. Finally, we discuss the resource usage and achievable performance when synthesized for an Altera Stratix II FPGA.

  8. Flexible Hardware-Based Stereo Matching

    Directory of Open Access Journals (Sweden)

    Steininger Andreas

    2008-01-01

    Full Text Available Abstract To enable adaptive stereo vision for hardware-based embedded stereo vision systems, we propose a novel technique for implementing a flexible block size, disparity range, and frame rate. By reusing existing resources of a static architecture, rather than dynamic reconfiguration, our technique is compatible with application specific integrated circuit (ASIC as well as field programmable gate array (FPGA implementations. We present the corresponding block diagrams and their implementation in our hardware-based stereo matching architecture. Furthermore, we show the impact of flexible stereo matching on the generated disparity maps for the sum of absolute differences (SADs, rank, and census transform algorithms. Finally, we discuss the resource usage and achievable performance when synthesized for an Altera Stratix II FPGA.

  9. Design Pattern Mining Using Graph Matching

    Institute of Scientific and Technical Information of China (English)

    LI Qing-hua; ZHANG Zhi-xiang; BEN Ke-rong

    2004-01-01

    The identification of design pattern instances is important for program understanding and software maintenance. Aiming at the mining of design patterns in existing systems, this paper proposes a sub-graph isomorphism approach to discover several design patterns in a legacy system at a time. The attributed relational graph is used to describe design patterns and legacy systems. The sub-graph isomorphism approach consists of decomposition and composition process. During the decomposition process, graphs corresponding to the design patterns are decomposed into sub-graphs, some of which are graphs corresponding to the elemental design patterns. The composition process tries to get sub-graph isomorphism of the matched graph if sub-graph isomorphism of each sub-graph is obtained. Due to the common structures between design patterns, the proposed approach can reduce the matching times of entities and relations. Compared with the existing methods, the proposed algorithm is not linearly dependent on the number of design pattern graphs.

  10. Optimal Feedback Communication via Posterior Matching

    CERN Document Server

    Shayevitz, Ofer

    2009-01-01

    In this paper we introduce a fundamental principle for optimal communication over general memoryless channels in the presence of noiseless feedback, termed \\textit{posterior matching}. Using this principle, we devise a (simple, sequential) generic feedback transmission scheme suitable for a large class of memoryless channels and input distributions, achieving any rate below the corresponding mutual information. This provides a unified framework for optimal feedback communication in which the Horstein scheme (BSC) and the Schalkwijk-Kailath scheme (AWGN channel) are special cases. Thus, as a corollary, we prove that the Horstein scheme indeed attains the BSC capacity, settling a longstanding conjecture. We further provide closed form expressions for the error probability of the scheme over a range of rates, and derive the achievable rates in a mismatch setting where the scheme is designed according to the wrong channel model. Finally, several illustrative examples of the posterior matching scheme for specific ...

  11. Fast Legendre moment computation for template matching

    Science.gov (United States)

    Li, Bing C.

    2017-05-01

    Normalized cross correlation (NCC) based template matching is insensitive to intensity changes and it has many applications in image processing, object detection, video tracking and pattern recognition. However, normalized cross correlation implementation is computationally expensive since it involves both correlation computation and normalization implementation. In this paper, we propose Legendre moment approach for fast normalized cross correlation implementation and show that the computational cost of this proposed approach is independent of template mask sizes which is significantly faster than traditional mask size dependent approaches, especially for large mask templates. Legendre polynomials have been widely used in solving Laplace equation in electrodynamics in spherical coordinate systems, and solving Schrodinger equation in quantum mechanics. In this paper, we extend Legendre polynomials from physics to computer vision and pattern recognition fields, and demonstrate that Legendre polynomials can help to reduce the computational cost of NCC based template matching significantly.

  12. Image Matching by Using Fuzzy Transforms

    Directory of Open Access Journals (Sweden)

    Ferdinando Di Martino

    2013-01-01

    Full Text Available We apply the concept of Fuzzy Transform (for short, F-transform for improving the results of the image matching based on the Greatest Eigen Fuzzy Set (for short, GEFS with respect to max-min composition and the Smallest Eigen Fuzzy Set (for short, SEFS with respect to min-max composition already studied in the literature. The direct F-transform of an image can be compared with the direct F-transform of a sample image to be matched and we use suitable indexes to measure the grade of similarity between the two images. We make our experiments on the image dataset extracted from the well-known Prima Project View Sphere Database, comparing the results obtained with this method with that one based on the GEFS and SEFS. Other experiments are performed on frames of videos extracted from the Ohio State University dataset.

  13. Developing Enculturated Agents

    DEFF Research Database (Denmark)

    Rehm, Matthias

    2010-01-01

    Embodied Conversational Agents (ECAs) are complex multimodal systems with rich verbal and nonverbal repertoires. There human-like appearance raises severe expectations regarding natural communicative behaviors on the side of the user. But what is regarded as “natural” is to a large degree dependent...... on our cultural profiles that provide us with heuristics of behavior and interpretation. Thus, integrating cultural aspects of communicative behaviors in virtual agents and thus enculturating such systems seems to be inevitable. But culture is a multi-defined domain and thus a number of pitfalls arise...

  14. On the tautology of the matching law.

    Science.gov (United States)

    Rachlin, H

    1971-03-01

    The generalized matching law, that organisms divide their time between alternatives in proportion to the value of the reinforcement consequent on the choice, is derivable from the assumption that an organism choosing between alternatives is under no constraints except those the contingencies of reinforcement impose. Hence, the law is not subject to empirical test. Its value lies in its simple codification of assumptions underlying choice experiments.

  15. Profile Terry Young: man of the match

    CERN Multimedia

    2003-01-01

    Terry Young, chair of health systems at Brunel University, has received a grant of 3.3 million pounds from EPSRC. The money will create the Multidisciplinary Assessment of Technology Centre for Health (MATCH). The aim of the centre is to aid the progress of medical devices from concept to patient care by developing criteria to single out promising technologies and helping them to market (1 page).

  16. National Medical School Matching Program: optimizing outcomes

    Science.gov (United States)

    Eltorai, Adam EM; Daniels, Alan H

    2016-01-01

    The medical school admissions process is inefficient and costly to both applicants and medical schools. For the many rejected applicants, this process represents a costly, unproductive use of time. For medical schools, numerous applications are reviewed that ultimately do not yield matriculants, representing a substantial inefficiency. In order to streamline the process and reduce costs, we propose the development of a national medical school matching program. PMID:27445512

  17. Message passing with relaxed moment matching

    OpenAIRE

    Qi, Yuan; Guo, Yandong

    2012-01-01

    Bayesian learning is often hampered by large computational expense. As a powerful generalization of popular belief propagation, expectation propagation (EP) efficiently approximates the exact Bayesian computation. Nevertheless, EP can be sensitive to outliers and suffer from divergence for difficult cases. To address this issue, we propose a new approximate inference approach, relaxed expectation propagation (REP). It relaxes the moment matching requirement of expectation propagation by addin...

  18. Vividness Effects: A Resource-Matching Perspective.

    OpenAIRE

    Keller, Punam Anand; Block, Lauren G

    1997-01-01

    The authors present a resource-matching perspective to explain the relationship between vividness and persuasion. Three experiments confirm the predicted inverted-U relationship between resource allocation and persuasion for vivid information, and a positive linear relationship between resource allocation and persuasion for nonvivid information when vivid information is less resource demanding than nonvivid information. This persuasion pattern is reversed in experiment 4, where nonvivid infor...

  19. Longitudinal matching between SFC and SSC

    Energy Technology Data Exchange (ETDEWEB)

    Yin, Q.M.; Tang, J.Y.; Wang, S.L. [Institute of Modern Physics, China Academy of Science, Lanzhou (China)

    1998-11-01

    In order to increase the beam current and to enhance the beam quality, an upgrading program of HIRFL is going on at HIRFL. As a part of this program, the longitudinal matching between injector SFC and main machine SSC will be improved. It consists of beam energy measurement, compensation of energy loss due to stripper and a new rebuncher system. In this paper, the study results are presented. (author)

  20. Intuitionistic Fuzzy Automaton for Approximate String Matching

    Directory of Open Access Journals (Sweden)

    K.M. Ravi

    2014-03-01

    Full Text Available This paper introduces an intuitionistic fuzzy automaton model for computing the similarity between pairs of strings. The model details the possible edit operations needed to transform any input (observed string into a target (pattern string by providing a membership and non-membership value between them. In the end, an algorithm is given for approximate string matching and the proposed model computes the similarity and dissimilarity between the pair of strings leading to better approximation.