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Sample records for models showed good

  1. Conceptual Models Core to Good Design

    CERN Document Server

    Johnson, Jeff

    2011-01-01

    People make use of software applications in their activities, applying them as tools in carrying out tasks. That this use should be good for people--easy, effective, efficient, and enjoyable--is a principal goal of design. In this book, we present the notion of Conceptual Models, and argue that Conceptual Models are core to achieving good design. From years of helping companies create software applications, we have come to believe that building applications without Conceptual Models is just asking for designs that will be confusing and difficult to learn, remember, and use. We show how Concept

  2. Genoa Boat ShowGood Example of Event Management

    Directory of Open Access Journals (Sweden)

    Dunja Demirović

    2012-07-01

    Full Text Available International Boat Show, a business and tourist event, has been held annually in Italian city of Genoa since 1962. The fair is one of the oldest, largest and best known in the field of boating industry worldwide, primarily due to good management of the event and it can serve as case study for domestic fair organizers to improve the quality of their business and services. Since Belgrade is the city of fairs, but compared to Genoa still underdeveloped in terms of trade shows, the following tasks imposed naturally in this study: to determine the relationship of the organizers of Genoa Boat Show in the sector of preparation and fair offer, in the sector of selection and communication with specific target groups (especially visitors, services during the fair and functioning of the city during the fair. During the research the authors have mostly used historical method, comparison, synthesis and the interview method. The results of theoretical research, in addition, may help not only managers of fair shows and of exhibitions, but also to organizers of other events in our country

  3. Polymer models with optimal good-solvent behavior

    Science.gov (United States)

    D'Adamo, Giuseppe; Pelissetto, Andrea

    2017-11-01

    We consider three different continuum polymer models, which all depend on a tunable parameter r that determines the strength of the excluded-volume interactions. In the first model, chains are obtained by concatenating hard spherocylinders of height b and diameter rb (we call them thick self-avoiding chains). The other two models are generalizations of the tangent hard-sphere and of the Kremer-Grest models. We show that for a specific value r* , all models show optimal behavior: asymptotic long-chain behavior is observed for relatively short chains. For r < r* , instead, the behavior can be parametrized by using the two-parameter model, which also describes the thermal crossover close to the θ point. The bonds of the thick self-avoiding chains cannot cross each other, and therefore the model is suited for the investigation of topological properties and for dynamical studies. Such a model also provides a coarse-grained description of double-stranded DNA, so that we can use our results to discuss under which conditions DNA can be considered as a model good-solvent polymer.

  4. Reflexion on linear regression trip production modelling method for ensuring good model quality

    Science.gov (United States)

    Suprayitno, Hitapriya; Ratnasari, Vita

    2017-11-01

    Transport Modelling is important. For certain cases, the conventional model still has to be used, in which having a good trip production model is capital. A good model can only be obtained from a good sample. Two of the basic principles of a good sampling is having a sample capable to represent the population characteristics and capable to produce an acceptable error at a certain confidence level. It seems that this principle is not yet quite understood and used in trip production modeling. Therefore, investigating the Trip Production Modelling practice in Indonesia and try to formulate a better modeling method for ensuring the Model Quality is necessary. This research result is presented as follows. Statistics knows a method to calculate span of prediction value at a certain confidence level for linear regression, which is called Confidence Interval of Predicted Value. The common modeling practice uses R2 as the principal quality measure, the sampling practice varies and not always conform to the sampling principles. An experiment indicates that small sample is already capable to give excellent R2 value and sample composition can significantly change the model. Hence, good R2 value, in fact, does not always mean good model quality. These lead to three basic ideas for ensuring good model quality, i.e. reformulating quality measure, calculation procedure, and sampling method. A quality measure is defined as having a good R2 value and a good Confidence Interval of Predicted Value. Calculation procedure must incorporate statistical calculation method and appropriate statistical tests needed. A good sampling method must incorporate random well distributed stratified sampling with a certain minimum number of samples. These three ideas need to be more developed and tested.

  5. Basic model of quality and good practices in neonatal radiography

    International Nuclear Information System (INIS)

    Dias, Janine H.; Goulart, Juliana M.; Lykawka, Rochelle; Bacelar, Alexandre

    2016-01-01

    Neonatal chest radiographs were evaluated and 3 variables were analyzed: collimation, positioning and presence of artifacts. This study is a pilot for develop a model of good practices in radiology, which is in development phase. The index of analyzed radiographs considered inadequate is expressive and it shows the need for a model that may be part of an optimization program to medical exposures. (author)

  6. Learners' Epistemic Criteria for Good Scientific Models

    Science.gov (United States)

    Pluta, William J.; Chinn, Clark A.; Duncan, Ravit Golan

    2011-01-01

    Epistemic criteria are the standards used to evaluate scientific products (e.g., models, evidence, arguments). In this study, we analyzed epistemic criteria for good models generated by 324 middle-school students. After evaluating a range of scientific models, but before extensive instruction or experience with model-based reasoning practices,…

  7. Kinetic models for goods exchange in a multi-agent market

    Science.gov (United States)

    Brugna, Carlo; Toscani, Giuseppe

    2018-06-01

    In this paper we introduce a system of kinetic equations describing an exchange market consisting of two populations of agents (dealers and speculators) expressing the same preferences for two goods, but applying different strategies in their exchanges. Similarly to the model proposed in Toscani et al. (2013), we describe the trading of the goods by means of some fundamental rules in price theory, in particular by using Cobb-Douglas utility functions for the exchange. The strategy of the speculators is to recover maximal utility from the trade by suitably acting on the percentage of goods which are exchanged. This microscopic description leads to a system of linear Boltzmann-type equations for the probability distributions of the goods on the two populations, in which the post-interaction variables depend from the pre-interaction ones in terms of the mean quantities of the goods present in the market. In this case, it is shown analytically that the strategy of the speculators can drive the price of the two goods towards a zone in which there is a branded utility for their group. Also, according to Toscani et al. (2013), the general system of nonlinear kinetic equations of Boltzmann type for the probability distributions of the goods on the two populations is described in details. Numerical experiments then show how the policy of speculators can modify the final price of goods in this nonlinear setting.

  8. Paks shows the way towards good operating practices

    International Nuclear Information System (INIS)

    Anon.

    1989-01-01

    The Paks-3 unit in Hungary was the first VVER (Soviet designed Pressurized Water Reactor) to be scrutinized by an International Atomic Energy Agency Operational Safety Analysis Review Team. A number of examples of good operational practice were noted. Those reported here include the cleanliness of the plant, the management attitude to training, early detection of and action to correct problems as they arise, an accident avoidance policy, a back-up research and development programme, and the provision of computer-based assistance to the operator to present operational data in an easily comprehensible form. (U.K.)

  9. Unifying distance-based goodness-of-fit indicators for hydrologic model assessment

    Science.gov (United States)

    Cheng, Qinbo; Reinhardt-Imjela, Christian; Chen, Xi; Schulte, Achim

    2014-05-01

    The goodness-of-fit indicator, i.e. efficiency criterion, is very important for model calibration. However, recently the knowledge about the goodness-of-fit indicators is all empirical and lacks a theoretical support. Based on the likelihood theory, a unified distance-based goodness-of-fit indicator termed BC-GED model is proposed, which uses the Box-Cox (BC) transformation to remove the heteroscedasticity of model errors and the generalized error distribution (GED) with zero-mean to fit the distribution of model errors after BC. The BC-GED model can unify all recent distance-based goodness-of-fit indicators, and reveals the mean square error (MSE) and the mean absolute error (MAE) that are widely used goodness-of-fit indicators imply statistic assumptions that the model errors follow the Gaussian distribution and the Laplace distribution with zero-mean, respectively. The empirical knowledge about goodness-of-fit indicators can be also easily interpreted by BC-GED model, e.g. the sensitivity to high flow of the goodness-of-fit indicators with large power of model errors results from the low probability of large model error in the assumed distribution of these indicators. In order to assess the effect of the parameters (i.e. the BC transformation parameter λ and the GED kurtosis coefficient β also termed the power of model errors) of BC-GED model on hydrologic model calibration, six cases of BC-GED model were applied in Baocun watershed (East China) with SWAT-WB-VSA model. Comparison of the inferred model parameters and model simulation results among the six indicators demonstrates these indicators can be clearly separated two classes by the GED kurtosis β: β >1 and β ≤ 1. SWAT-WB-VSA calibrated by the class β >1 of distance-based goodness-of-fit indicators captures high flow very well and mimics the baseflow very badly, but it calibrated by the class β ≤ 1 mimics the baseflow very well, because first the larger value of β, the greater emphasis is put on

  10. Good Faith and Game Theory

    DEFF Research Database (Denmark)

    Rose, Caspar

    2016-01-01

    This article shows how game theory can be applied to model good faith mathematically using an example of a classic legal dispute related to rei vindicato. The issue is whether an owner has a legal right to his good if a person has bought it in good faith by using updated probabilities. The article...

  11. Time series models of environmental exposures: Good predictions or good understanding.

    Science.gov (United States)

    Barnett, Adrian G; Stephen, Dimity; Huang, Cunrui; Wolkewitz, Martin

    2017-04-01

    Time series data are popular in environmental epidemiology as they make use of the natural experiment of how changes in exposure over time might impact on disease. Many published time series papers have used parameter-heavy models that fully explained the second order patterns in disease to give residuals that have no short-term autocorrelation or seasonality. This is often achieved by including predictors of past disease counts (autoregression) or seasonal splines with many degrees of freedom. These approaches give great residuals, but add little to our understanding of cause and effect. We argue that modelling approaches should rely more on good epidemiology and less on statistical tests. This includes thinking about causal pathways, making potential confounders explicit, fitting a limited number of models, and not over-fitting at the cost of under-estimating the true association between exposure and disease. Copyright © 2017 Elsevier Inc. All rights reserved.

  12. Coupled Oscillator Model of the Business Cycle withFluctuating Goods Markets

    Science.gov (United States)

    Ikeda, Y.; Aoyama, H.; Fujiwara, Y.; Iyetomi, H.; Ogimoto, K.; Souma, W.; Yoshikawa, H.

    The sectoral synchronization observed for the Japanese business cycle in the Indices of Industrial Production data is an example of synchronization. The stability of this synchronization under a shock, e.g., fluctuation of supply or demand, is a matter of interest in physics and economics. We consider an economic system made up of industry sectors and goods markets in order to analyze the sectoral synchronization observed for the Japanese business cycle. A coupled oscillator model that exhibits synchronization is developed based on the Kuramoto model with inertia by adding goods markets, and analytic solutions of the stationary state and the coupling strength are obtained. We simulate the effects on synchronization of a sectoral shock for systems with different price elasticities and the coupling strengths. Synchronization is reproduced as an equilibrium solution in a nearest neighbor graph. Analysis of the order parameters shows that the synchronization is stable for a finite elasticity, whereas the synchronization is broken and the oscillators behave like a giant oscillator with a certain frequency additional to the common frequency for zero elasticity.

  13. TOURISM, TRADE, EXTERNALITIES, AND PUBLIC GOODS IN A THREE-SECTOR GROWTH MODEL

    Directory of Open Access Journals (Sweden)

    Wei-Bin Zhang

    2015-06-01

    Full Text Available The purpose of this study is to introduce tourism, externalities, and public goods to a small-open growth with endogenous wealth and public goods supply. We develop the model on the basis of the Solow-Uzawa growth model, the neoclassical neoclassical growth theory with externalities, and ideas from tourism economics. The economy consists of three – service, industrial, and public - sectors. The production side is based on the traditional growth theories, while the household behavior is described by an alternative utility function proposed by Zhang. We introduce endogenous land distribution between housing and supply of services. The industrial and service sectors are perfectly competitive subject to the government’s taxation. The public sector is financially supported by the government. We introduce taxes not only on producers, but also on consumers’ incomes from wage, land, and interest of wealth, consumption of goods and services, and housing. We simulate the motion of the national economy and show the existence of a unique stable equilibrium. We carry out comparative dynamic analysis with regard to the rate of interest in the global market, the total productivity of the service sector, tax rate on the service sector, tax rate on consumption of services, human capital, the propensity to consume services, and the impact of public services on the productivity of the industrial sector. The comparative dynamic analysis provides some important insights into the complexity of open economies with endogenous wealth, public goods, and externalities.

  14. PEMILIHAN MODEL ORGANISASI DAN TERWUJUDNYA PRINSIP-PRINSIP GOOD CORPORATE GOVERNANCE

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    Aries Susanty

    2012-02-01

    Full Text Available Ketidakmampuan penerapan prinsip good corporate governance (GSC didemonstrasikan dalam survei dengan konstrain yang diklasifikasikan dalam 3 konstrain yaitu konstrain internal, konstrain eksternal dan konstrain yang berasal dari struktur pemilik. Konstrain internal meliputi komitmen pemimpin dan pekerja, tingkat pemahaman prinsip GCG oleh pemimpin dan pekerja, keefektifan sistem kontrol internal dan formality trap (implementasi CG hanya untuk memenuhi regulasi. Konstrain internal yang disebutkan berkaitan dengan fungsi internal perusahaan. Sebagai sebuah organisasi bisnis, korporasi tidak mampu mencapai tujuan menerapkan GCG dengan sukses bila tidak didukung elemen internal organisasi. Untuk membentuk fungsi internal diperlukan diagnosa korporasi dengan model organisasi. Dalam hal ini, penulis menggunakan beberapa kriteria untuk memilih model yang paling tepat dari 10 model yang ada. Dari beberapa kriteria dapat disimpulkan bahwa Adaptasi Pascal merupakan model yang paling tepat. Model ini dapat menggambarkan hubungan antara kondisi tiap elemen organisasi dengan kesuksesan implementasi prinsip GCG. Kata kunci: Prinsip Good Corporate Governance, model organisasi             The inability to implement the principles of good corporate governance (GCG as demonstrated in the surveys is due to a number of constraints which can be classified into three; namely internal constraints, external constraints, and constraints coming from the structure of ownership. Internal constraints cover the commitment of leaders and workers, the level of understanding of GCG principles from leaders and workers, good example from leaders, the corporate culture supporting the implementation of GCG principles, effectiveness of internal control system, and formality trap (implementing CG only to meet regulations. The issues in the internal constraints mentioned are related to the internal  functions of the company. As a business organization, corporation is unable

  15. The importance of information goods abstraction levels for information commerce process models

    NARCIS (Netherlands)

    Wijnhoven, Alphonsus B.J.M.

    2002-01-01

    A process model, in the context of e-commerce, is an organized set of activities for the creation, (re-)production, trade and delivery of goods. Electronic commerce studies have created important process models for the trade of physical goods via Internet. These models are not easily suitable for

  16. Climatic associations of British species distributions show good transferability in time but low predictive accuracy for range change.

    Directory of Open Access Journals (Sweden)

    Giovanni Rapacciuolo

    Full Text Available Conservation planners often wish to predict how species distributions will change in response to environmental changes. Species distribution models (SDMs are the primary tool for making such predictions. Many methods are widely used; however, they all make simplifying assumptions, and predictions can therefore be subject to high uncertainty. With global change well underway, field records of observed range shifts are increasingly being used for testing SDM transferability. We used an unprecedented distribution dataset documenting recent range changes of British vascular plants, birds, and butterflies to test whether correlative SDMs based on climate change provide useful approximations of potential distribution shifts. We modelled past species distributions from climate using nine single techniques and a consensus approach, and projected the geographical extent of these models to a more recent time period based on climate change; we then compared model predictions with recent observed distributions in order to estimate the temporal transferability and prediction accuracy of our models. We also evaluated the relative effect of methodological and taxonomic variation on the performance of SDMs. Models showed good transferability in time when assessed using widespread metrics of accuracy. However, models had low accuracy to predict where occupancy status changed between time periods, especially for declining species. Model performance varied greatly among species within major taxa, but there was also considerable variation among modelling frameworks. Past climatic associations of British species distributions retain a high explanatory power when transferred to recent time--due to their accuracy to predict large areas retained by species--but fail to capture relevant predictors of change. We strongly emphasize the need for caution when using SDMs to predict shifts in species distributions: high explanatory power on temporally-independent records

  17. The Meaning of Goodness-of-Fit Tests: Commentary on "Goodness-of-Fit Assessment of Item Response Theory Models"

    Science.gov (United States)

    Thissen, David

    2013-01-01

    In this commentary, David Thissen states that "Goodness-of-fit assessment for IRT models is maturing; it has come a long way from zero." Thissen then references prior works on "goodness of fit" in the index of Lord and Novick's (1968) classic text; Yen (1984); Drasgow, Levine, Tsien, Williams, and Mead (1995); Chen and…

  18. A Model for Electronic Good Governance in Electronic Learning Sector of Iran

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    Alireza Moghaddasi

    2016-10-01

    Full Text Available Despite the various models and frameworks on electronic good governance are introduced, the multiple dimensions model of electronic good governance in the field of e-Learning has not been reviewed this subject in a integrated, comprehensive, process-oriented and systematic model. In this article, in order to explain the process of electronic good governance, by a systematic review of the related literature and backgrounds, all factors were identified using meta-synthesis methodology. Then, based on grounded theory methodology and Strauss and Corbin paradigmatic approach, the open, axial and selective coding were conducted. In the following, by using survey method, we determined the importance and priority of all proposed factors. It was also indicated that this research was innovative in the fields of methodology, results and the proposed model which had not been considered in the previous researches. So that, the proposed model resolved the shortcomings of past researches and made it possible for the public sector, private and civil society organizations to consider the process of establishing electronic good governance in e-Learning sector in Iran as a dynamic process.

  19. "Inclusive Working Life" in Norway--experience from "Models of Good Practice" enterprises.

    Science.gov (United States)

    Lie, Arve

    2008-08-01

    To determine whether enterprises belonging to the Bank of Models of Good Practice were more successful than average Norwegian enterprises in the reduction of sickness absence, promotion of early return to work, and prevention of early retirement. In 2004 we selected 86 enterprises with a total of approximately 90000 employees from the Inclusive Working Life (IWL) Bank of Models of Good Practice. One representative of workers and one of management from each enterprise received a questionnaire on the aims, organization, and the results of the IWL program by mail. Data on sickness absence, use of early retirement, and disability retirement in the 2000-2004 period were collected from the National Insurance Registry. Data on comparable enterprises were obtained from the National Bureau of Statistics. The response rate was 65%. Although the IWL campaign was directed at reducing sickness absence, preventing early retirement, and promoting employment of the functionally impaired, most attention was paid to reducing sickness absence. Sickness absence rate in Models of Good Practice enterprises (8.2%) was higher than in comparable enterprises that were not part of the Models of Good Practice (6.9%). Implementation of many IWL activities, empowerment and involvement of employees, and good cooperation with the occupational health service were associated with a lower rate of sickness absence. On average, 0.7% new employees per year received disability pension, which is a significantly lower percentage than expected on the basis of the rate of 1.3% per year in comparable enterprises. Frequent use of disability pensioning was associated with high rate of sickness absence and having many employees older than 50 years. On average, 0.4% employees per year received early retirement compensation, which was expected on the basis of national estimates. Frequent use of early retirement was associated with having many employees older than 50 years. Models of Good Practice enterprises had

  20. Goodness-of-Fit Assessment of Item Response Theory Models

    Science.gov (United States)

    Maydeu-Olivares, Alberto

    2013-01-01

    The article provides an overview of goodness-of-fit assessment methods for item response theory (IRT) models. It is now possible to obtain accurate "p"-values of the overall fit of the model if bivariate information statistics are used. Several alternative approaches are described. As the validity of inferences drawn on the fitted model…

  1. On a quest for good process models : the cross-connectivity metric

    NARCIS (Netherlands)

    Vanderfeesten, I.T.P.; Reijers, H.A.; Mendling, J.; Aalst, van der W.M.P.; Cardoso, J.; Bellahsène, Z.; Léonard, M.

    2008-01-01

    Business process modeling is an important corporate activity, but the understanding of what constitutes good process models is rather limited. In this paper, we turn to the cognitive dimensions framework and identify the understanding of the structural relationship between any pair of model elements

  2. Adaptive governance good practice: Show me the evidence!

    Science.gov (United States)

    Sharma-Wallace, Lisa; Velarde, Sandra J; Wreford, Anita

    2018-09-15

    -based adaptive governance good practice within and across diverse sectors, issues, and contexts. Copyright © 2018. Published by Elsevier Ltd.

  3. Time dependent patient no-show predictive modelling development.

    Science.gov (United States)

    Huang, Yu-Li; Hanauer, David A

    2016-05-09

    Purpose - The purpose of this paper is to develop evident-based predictive no-show models considering patients' each past appointment status, a time-dependent component, as an independent predictor to improve predictability. Design/methodology/approach - A ten-year retrospective data set was extracted from a pediatric clinic. It consisted of 7,291 distinct patients who had at least two visits along with their appointment characteristics, patient demographics, and insurance information. Logistic regression was adopted to develop no-show models using two-thirds of the data for training and the remaining data for validation. The no-show threshold was then determined based on minimizing the misclassification of show/no-show assignments. There were a total of 26 predictive model developed based on the number of available past appointments. Simulation was employed to test the effective of each model on costs of patient wait time, physician idle time, and overtime. Findings - The results demonstrated the misclassification rate and the area under the curve of the receiver operating characteristic gradually improved as more appointment history was included until around the 20th predictive model. The overbooking method with no-show predictive models suggested incorporating up to the 16th model and outperformed other overbooking methods by as much as 9.4 per cent in the cost per patient while allowing two additional patients in a clinic day. Research limitations/implications - The challenge now is to actually implement the no-show predictive model systematically to further demonstrate its robustness and simplicity in various scheduling systems. Originality/value - This paper provides examples of how to build the no-show predictive models with time-dependent components to improve the overbooking policy. Accurately identifying scheduled patients' show/no-show status allows clinics to proactively schedule patients to reduce the negative impact of patient no-shows.

  4. Vulnerable Derivatives and Good Deal Bounds: A Structural Model

    DEFF Research Database (Denmark)

    Murgoci, Agatha

    2013-01-01

    We price vulnerable derivatives -- i.e. derivatives where the counterparty may default. These are basically the derivatives traded on the over-the-counter (OTC) markets. Default is modeled in a structural framework. The technique employed for pricing is good deal bounds (GDBs). The method imposes...

  5. Flexible competing risks regression modeling and goodness-of-fit

    DEFF Research Database (Denmark)

    Scheike, Thomas; Zhang, Mei-Jie

    2008-01-01

    In this paper we consider different approaches for estimation and assessment of covariate effects for the cumulative incidence curve in the competing risks model. The classic approach is to model all cause-specific hazards and then estimate the cumulative incidence curve based on these cause...... models that is easy to fit and contains the Fine-Gray model as a special case. One advantage of this approach is that our regression modeling allows for non-proportional hazards. This leads to a new simple goodness-of-fit procedure for the proportional subdistribution hazards assumption that is very easy...... of the flexible regression models to analyze competing risks data when non-proportionality is present in the data....

  6. Recommendations on the transport of dangerous goods. Model regulations. 11. revised ed.

    International Nuclear Information System (INIS)

    1999-01-01

    The Recommendations on the Transport of Dangerous Goods are addressed to governments and to the international organizations concerned with the regulation of the transport of dangerous goods. They have been prepared by the United Nations Economic and Social Council's Committee of Experts on the Transport of Dangerous Goods, and they were first published in 1956 (ST/ECA/43-E/CN.2/170). Pursuant to Resolution 645 G (XXIII) of 26 April 1957 of the Economic and Social Council and subsequent resolutions, they have been regularly amended and updated at succeeding sessions of the Committee of Experts. At its eighteenth session (28 November-7 December 1994), the Committee of Experts considered that reformatting the Recommendations on the Transport of Dangerous Goods into Model Regulations that could be directly integrated into all modal national and international regulations would enhance harmonization, facilitate regular up-dating of all legal instruments concerned, and result in overall considerable resource savings for the Governments of the Member States, the United Nations, the specialized agencies and other international organizations. At its nineteenth session (2-10 December 1996), the Committee adopted a first version of the Model Regulations on the Transport of Dangerous Goods, which was annexed to the tenth revised edition of the Recommendations on the Transport of Dangerous Goods. At its twentieth session (7-16 December 1998), the Committee adopted various amendments to the Model Regulations and new provisions including, in particular, packing instructions for individual substances and articles and additional provisions for the transport of radioactive material. The additional provisions concerning the transport of radioactive material were developed in close cooperation with the International Atomic Energy Agency (IAEA) and are based on the 1996 Edition of the IAEA Regulations for the Safe Transport of Radioactive Material which have been reformatted so as to be

  7. Local and omnibus goodness-of-fit tests in classical measurement error models

    KAUST Repository

    Ma, Yanyuan

    2010-09-14

    We consider functional measurement error models, i.e. models where covariates are measured with error and yet no distributional assumptions are made about the mismeasured variable. We propose and study a score-type local test and an orthogonal series-based, omnibus goodness-of-fit test in this context, where no likelihood function is available or calculated-i.e. all the tests are proposed in the semiparametric model framework. We demonstrate that our tests have optimality properties and computational advantages that are similar to those of the classical score tests in the parametric model framework. The test procedures are applicable to several semiparametric extensions of measurement error models, including when the measurement error distribution is estimated non-parametrically as well as for generalized partially linear models. The performance of the local score-type and omnibus goodness-of-fit tests is demonstrated through simulation studies and analysis of a nutrition data set.

  8. Rupture of the atherosclerotic plaque: does a good animal model exist?

    NARCIS (Netherlands)

    Cullen, Paul; Baetta, Roberta; Bellosta, Stefano; Bernini, Franco; Chinetti, Giulia; Cignarella, Andrea; von Eckardstein, Arnold; Exley, Andrew; Goddard, Martin; Hofker, Marten; Hurt-Camejo, Eva; Kanters, Edwin; Kovanen, Petri; Lorkowski, Stefan; McPheat, William; Pentikäinen, Markku; Rauterberg, Jürgen; Ritchie, Andrew; Staels, Bart; Weitkamp, Benedikt; de Winther, Menno

    2003-01-01

    By its very nature, rupture of the atherosclerotic plaque is difficult to study directly in humans. A good animal model would help us not only to understand how rupture occurs but also to design and test treatments to prevent it from happening. However, several difficulties surround existing models

  9. A goods characteristics model of the hedonic ageing equation: evidence from a French marriage bureau

    OpenAIRE

    Sam Cameron; Nicolas Vaillant

    2005-01-01

    The present paper adopts a modelling perspective derived from goods characteristics analysis [Lancaster (1971)] and the general ideas of transactions costs. This is implemented in estimated equations, which feature the age of partner sought as the dependent variable and own age and various other personal characteristics, and characteristics desired in a partner, as the right-hand side variables. The results show a very strong relationship between age and desired partner age. More interestingl...

  10. Gravity with Intermediate Goods Trade

    Directory of Open Access Journals (Sweden)

    Sujin Jang

    2017-12-01

    Full Text Available This paper derives the gravity equation with intermediate goods trade. We extend a standard monopolistic competition model to incorporate intermediate goods trade, and show that the gravity equation with intermediates trade is identical to the one without it except in that gross output should be used as the output measure instead of value added. We also show that the output elasticity of trade is significantly underestimated when value added is used as the output measure. This implies that with the conventional gravity equation, the contribution of output growth can be substantially underestimated and the role of trade costs reduction can be exaggerated in explaining trade expansion, as we demonstrate for the case of Korea's trade growth between 1995 and 2007.

  11. Wastewater Treatment Model in Washing Stations for Vehicles Transporting Dangerous Goods

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    Robert Muha

    2004-09-01

    Full Text Available Car washing is a task performed by every passenger carowner more or less frequently, mainly to achieve a finer appearanceof the vehicle rather than for the need for cleanness.In the transport business, the owner's concern is to presentclean and orderly vehicles on the road as a relevant external elementof order, implying good corporate image to customers. Onthe other hand, in dangerous goods transportation there areother reasons requiring special technology of washing, applicableto the transport means used, depending on the change oftype of goods in carriage, the preliminary preparation of a vehicleto load the cargo, or to undergo maintenance.Water applied in the technology of washing collects the residueof goods carried in the vehicle and is polluted to such an extentthat it cannot be discharged into sewers - nor directly into awatercourse - without previous treatment.The paper presents a solution model and a sequence oftechnological procedures involved in an efficient treatment ofthe polluted wastewater in tank wash stations, in which mostlyvehicles carrying ADR goods are washed.

  12. Development of good modelling practice for phsiologically based pharmacokinetic models for use in risk assessment: The first steps

    Science.gov (United States)

    The increasing use of tissue dosimetry estimated using pharmacokinetic models in chemical risk assessments in multiple countries necessitates the need to develop internationally recognized good modelling practices. These practices would facilitate sharing of models and model eva...

  13. New methods to measure and model logistics and goods effects by the use of the CLG-DSS Model

    DEFF Research Database (Denmark)

    Salling, Kim Bang; Jensen, Anders Vestergaard

    2004-01-01

    This paper concerns the assessment and modelling of so-called logistics and goods effects (LG-effects) as part of a wider economic analysis by use of the developed CLG-DSS model. The results presented are based an on-going study, Task 9 about evaluation modelling and decision support systems (DSS......) in the Centre for Logistics and Goods Transport (CLG) 2001-2005 funded by the Danish Council for Technical-Scientific Research (STVF). Within the area of research on logistics the interaction between logistics and transportation is of great relevance. Task 9 and other recent studies have found that several...... companies are taking account of logistics and transport by setting up, among other things, specific departments to improve their handling. Some aspects in the transport sector concerning goods movement and consequences have not so far got the attention they deserve. In CLG Task 9 four LG-effects have been...

  14. Safety assessment of dangerous goods transport enterprise based on the relative entropy aggregation in group decision making model.

    Science.gov (United States)

    Wu, Jun; Li, Chengbing; Huo, Yueying

    2014-01-01

    Safety of dangerous goods transport is directly related to the operation safety of dangerous goods transport enterprise. Aiming at the problem of the high accident rate and large harm in dangerous goods logistics transportation, this paper took the group decision making problem based on integration and coordination thought into a multiagent multiobjective group decision making problem; a secondary decision model was established and applied to the safety assessment of dangerous goods transport enterprise. First of all, we used dynamic multivalue background and entropy theory building the first level multiobjective decision model. Secondly, experts were to empower according to the principle of clustering analysis, and combining with the relative entropy theory to establish a secondary rally optimization model based on relative entropy in group decision making, and discuss the solution of the model. Then, after investigation and analysis, we establish the dangerous goods transport enterprise safety evaluation index system. Finally, case analysis to five dangerous goods transport enterprises in the Inner Mongolia Autonomous Region validates the feasibility and effectiveness of this model for dangerous goods transport enterprise recognition, which provides vital decision making basis for recognizing the dangerous goods transport enterprises.

  15. TOWARDS A CONCEPTUAL FRAMEWORK OF ISLAMIC LEADERSHIP SUCCESSOR'S ATTRIBUTES MODEL AND GOOD GOVERNANCE

    Directory of Open Access Journals (Sweden)

    Naji Zuhair Alsarhi

    2015-12-01

    Full Text Available The purpose of this paper is to propose a conceptual model that explains the relationship between Islamic leadership successionpersonalityattributes and good governance. The paper sources information from an extensive search of literature to design a conceptual model of Islamic leadership succession (personal attributes & governmental characteristics of Succession and good governance. The model will provide an integration of relationships that will add valuable insights into improved leadership succession theory in the related literature. The paper may assist particularly policy makers and strategists to focus on new possibilities of leadership successors attributes that will lead to improved governance as well as government performance in the world in general, and the Palestine community, in particular.

  16. Duchenne muscular dystrophy models show their age

    OpenAIRE

    Chamberlain, Jeffrey S.

    2010-01-01

    The lack of appropriate animal models has hampered efforts to develop therapies for Duchenne muscular dystrophy (DMD). A new mouse model lacking both dystrophin and telomerase (Sacco et al., 2010) closely mimics the pathological progression of human DMD and shows that muscle stem cell activity is a key determinant of disease severity.

  17. GOODNESS-OF-FIT TEST FOR THE ACCELERATED FAILURE TIME MODEL BASED ON MARTINGALE RESIDUALS

    Czech Academy of Sciences Publication Activity Database

    Novák, Petr

    2013-01-01

    Roč. 49, č. 1 (2013), s. 40-59 ISSN 0023-5954 R&D Projects: GA MŠk(CZ) 1M06047 Grant - others:GA MŠk(CZ) SVV 261315/2011 Keywords : accelerated failure time model * survival analysis * goodness-of-fit Subject RIV: BB - Applied Statistics, Operational Research Impact factor: 0.563, year: 2013 http://library.utia.cas.cz/separaty/2013/SI/novak-goodness-of-fit test for the aft model based on martingale residuals.pdf

  18. Basic model of quality and good practices in neonatal radiography; Modelo basico de qualidade e boas praticas em radiografia neonatal

    Energy Technology Data Exchange (ETDEWEB)

    Dias, Janine H.; Goulart, Juliana M.; Lykawka, Rochelle; Bacelar, Alexandre [Hospital de Clinicas de Porto Alegre (HCPA), Porto Alegre, RS (Brazil)

    2016-07-01

    Neonatal chest radiographs were evaluated and 3 variables were analyzed: collimation, positioning and presence of artifacts. This study is a pilot for develop a model of good practices in radiology, which is in development phase. The index of analyzed radiographs considered inadequate is expressive and it shows the need for a model that may be part of an optimization program to medical exposures. (author)

  19. Dynamic pricing of network goods with boundedly rational consumers.

    Science.gov (United States)

    Radner, Roy; Radunskaya, Ami; Sundararajan, Arun

    2014-01-07

    We present a model of dynamic monopoly pricing for a good that displays network effects. In contrast with the standard notion of a rational-expectations equilibrium, we model consumers as boundedly rational and unable either to pay immediate attention to each price change or to make accurate forecasts of the adoption of the network good. Our analysis shows that the seller's optimal price trajectory has the following structure: The price is low when the user base is below a target level, is high when the user base is above the target, and is set to keep the user base stationary once the target level has been attained. We show that this pricing policy is robust to a number of extensions, which include the product's user base evolving over time and consumers basing their choices on a mixture of a myopic and a "stubborn" expectation of adoption. Our results differ significantly from those that would be predicted by a model based on rational-expectations equilibrium and are more consistent with the pricing of network goods observed in practice.

  20. Democracy, Redistributive Taxation and the Private Provision of Public Goods

    DEFF Research Database (Denmark)

    Markussen, Thomas

    ) pointed to, is weakened and might even be reversed in this context. Also, the median voter may choose a negative tax rate, even if he is poorer than the mean, in order to stimulate public goods production. The relevance of the model is illustrated with an application to the finance of higher education.......The paper studies in a simple, Downsian model of political competition how the private provision of public goods is affected when it is embedded in a system of democracy and redistributive taxation. Results show that the positive effect of inequality on public goods production, which Olson (1965...

  1. Is the Linear Modeling Technique Good Enough for Optimal Form Design? A Comparison of Quantitative Analysis Models

    Science.gov (United States)

    Lin, Yang-Cheng; Yeh, Chung-Hsing; Wang, Chen-Cheng; Wei, Chun-Chun

    2012-01-01

    How to design highly reputable and hot-selling products is an essential issue in product design. Whether consumers choose a product depends largely on their perception of the product image. A consumer-oriented design approach presented in this paper helps product designers incorporate consumers' perceptions of product forms in the design process. The consumer-oriented design approach uses quantification theory type I, grey prediction (the linear modeling technique), and neural networks (the nonlinear modeling technique) to determine the optimal form combination of product design for matching a given product image. An experimental study based on the concept of Kansei Engineering is conducted to collect numerical data for examining the relationship between consumers' perception of product image and product form elements of personal digital assistants (PDAs). The result of performance comparison shows that the QTTI model is good enough to help product designers determine the optimal form combination of product design. Although the PDA form design is used as a case study, the approach is applicable to other consumer products with various design elements and product images. The approach provides an effective mechanism for facilitating the consumer-oriented product design process. PMID:23258961

  2. Optimalisasi Penerapan Prinsip Good Governance Bidang Akademik dalam Upaya Mewujudkan Good University Governance

    Directory of Open Access Journals (Sweden)

    Hery Harjono Muljo

    2014-05-01

    Full Text Available This study wants to know and understand whether good governance principles have been well applied as well as the factors influencing optimization of the implementation of good governance principles on the academic field in an effort to realize good university governance in Bina Nusantara University. The study aims to evaluate the implementation of good governance principles on the academic field, know the factors that affect the implementation of good governance principles on the academic field, and improve and develop the academic areas in accordance with good governance principles in order to maximize the role of Bina Nusantara University as Good University Governance. The approach model used to understand the implementation of good governance principles was a model to educational institution using the 8 principles, namely academic freedom, shared governance, clear rights and responsibilities, selection at merit, financial stability, accountability, regular testing of standards, and the importance of close cooperation. Research used qualitative method with descriptive analysis, by analyzing the factors influencing optimization of the implementation of good governance principles, particularly on academic areas. The results achieved there were 18 factors that affect the optimization of the implementation of good governance principles. Then the factors affected the optimization ofthe implementation of good governance principles the most are operational centralization and academic decentralization which were the novelty of this study.

  3. MODELLING CHALLENGES TO FORECAST URBAN GOODS DEMAND FOR RAIL

    Directory of Open Access Journals (Sweden)

    Antonio COMI

    2015-12-01

    Full Text Available This paper explores the new research challenges for forecasting urban goods demand by rail. In fact, the growing interest to find urban logistics solutions for improving city sustainability and liveability, mainly due to the reduction of urban road accessibility and environmental constraints, has pushed to explore solutions alternative to the road. Multimodal urban logistics, based on the use of railway, seem an interesting alternative solution, but it remained mainly at conceptual level. Few studies have explored the factors, that push actors to find competitive such a system with respect to the road, and modelling framework for forecasting the relative demand. Therefore, paper reviews the current literature, investigates the factors involved in choosing such a mode, and finally, recalls a recent modelling framework and hence proposes some advancements that allow to point out the rail transport alternative.

  4. Comparison of hypertabastic survival model with other unimodal hazard rate functions using a goodness-of-fit test.

    Science.gov (United States)

    Tahir, M Ramzan; Tran, Quang X; Nikulin, Mikhail S

    2017-05-30

    We studied the problem of testing a hypothesized distribution in survival regression models when the data is right censored and survival times are influenced by covariates. A modified chi-squared type test, known as Nikulin-Rao-Robson statistic, is applied for the comparison of accelerated failure time models. This statistic is used to test the goodness-of-fit for hypertabastic survival model and four other unimodal hazard rate functions. The results of simulation study showed that the hypertabastic distribution can be used as an alternative to log-logistic and log-normal distribution. In statistical modeling, because of its flexible shape of hazard functions, this distribution can also be used as a competitor of Birnbaum-Saunders and inverse Gaussian distributions. The results for the real data application are shown. Copyright © 2017 John Wiley & Sons, Ltd. Copyright © 2017 John Wiley & Sons, Ltd.

  5. Modelling a duopoly market of the day-to-day goods

    Directory of Open Access Journals (Sweden)

    Sherstennykov Yuriy V.

    2013-03-01

    Full Text Available Management of competitiveness of a production enterprise is directly connected with issues of formation of competitive strategies, which requires a thorough analysis of those components of the enterprise activity, which could become the basis of formation and strengthening of stable competitive advantages. The existing models do not take into account the market infrastructure and, that is why, not quite suitable for being used in the practical activity of a firm in a competitive market. The article develops dynamic models of quantitative and pricing duopolies, which describe activity of firms, which deal with production, storing and selling day-to-day goods. The models allow taking into account interdependence of the current state of the market and current production facilities of enterprises. The proposed models give a possibility of a purposeful selection of strategic behaviour of duopolists. The conducted analysis of strategies of competitive firms revealed significant influence of market characteristics upon results of economic activity of firms.

  6. Development of the information model for consumer assessment of key quality indicators by goods labelling

    Science.gov (United States)

    Koshkina, S.; Ostrinskaya, L.

    2018-04-01

    An information model for “key” quality indicators of goods has been developed. This model is based on the assessment of f standardization existing state and the product labeling quality. According to the authors’ opinion, the proposed “key” indicators are the most significant for purchasing decision making. Customers will be able to use this model through their mobile technical devices. The developed model allows to decompose existing processes in data flows and to reveal the levels of possible architectural solutions. In-depth analysis of the presented information model decomposition levels will allow determining the stages of its improvement and to reveal additional indicators of the goods quality that are of interest to customers in the further research. Examining the architectural solutions for the customer’s information environment functioning when integrating existing databases will allow us to determine the boundaries of the model flexibility and customizability.

  7. Nurturing Good Ideas

    NARCIS (Netherlands)

    J.C.M. van den Ende (Jan); R.C. Kijkuit (Bob)

    2009-01-01

    textabstractManagers know that simply generating lots of ideas doesn’t necessarily produce good ones. What companies need are systems that nurture good ideas and cull bad ones—before they ever reach the decision maker’s desk. Our research shows that tapping the input of many people early in the

  8. Doing Good Parenthood

    DEFF Research Database (Denmark)

    This edited collection shows that good parenthood is neither fixed nor stable. The contributors show how parenthood is equally done by men, women and children, in and through practices involving different normative guidelines. The book explores how normative layers of parenthood are constituted...... by notions such as good childhood, family ideals, national public health and educational strategies. The authors illustrate how different versions of parenthood coexist and how complex sets of actions are demanded to fulfil today’s expectations of parenthood in Western societies. This interdisciplinary book...

  9. On jointly optimising the changes of seasonable goods and inventory replenishment

    Science.gov (United States)

    Li, Zhaolin; Tao, Feng; Sun, Daewon

    2012-06-01

    Retailers often need to replace soon-to-be-unseasonable products with new seasonable goods when the season changes. The trade-off for such activities involves choosing between the salvage loss of the unseasonable product and the profit of selling the seasonable product early. This article develops a periodic-review inventory model for planning the changes of seasonable goods with state-dependent demand and cost parameters. We show that the single-period optimal policy for product changes is a threshold policy based on the initial inventory of the unseasonable goods. The corresponding optimal inventory policy follows a Purchase-Keep-Dispose policy if the incumbent product is kept or a base-stock policy if the incumbent product is replaced. Numerically, we find that the structure of the multi-period optimal policy resembles that of the single-period model. We propose a heuristic to solve the multi-period model and demonstrate its effectiveness. Our research provides insights into dynamically managing seasonable goods.

  10. Private Financing of Public Goods by Means of 'Eco-Goods' Schemes

    DEFF Research Database (Denmark)

    Ueda, Yoshifumi; Wegener, Andreas; Svendsen, Gert Tinggaard

    2010-01-01

    With a view to applying to the problem of collective action for the global commons, we analyze a three-stage game model where public goods are provided by the costly leadership of a social entrepreneur for undertaking 'eco-goods' scheme. We derive (i) the conclusion that the social entrepreneur can...... finance more for the collective action under not-for-profit constraint than without the constraint, and (ii) the conditions under which he prefers the not-for-profit constraint on a rational basis. The main results are applied to some social experiments on the natural common-pools of a public-goods nature...

  11. A Theory of Finitely Durable Goods Monopoly with Used-Goods Market and Transaction Costs

    OpenAIRE

    S. Huang; Y. Yang; K. Anderson

    2001-01-01

    We construct a dynamic game to model a monopoly of finitely durable goods. The solution concept is Markov-perfect equilibria with general equilibria embedded in every time period. Our model is flexible enough to simultaneously explain or accommodate many commonly observed phenomena or stylized facts, such as concurrent leasing and selling, active secondary markets for used goods, heterogeneous consumers, endogenous consumption patterns, depreciation, an infinite time horizon, and nontrivial t...

  12. Permutation tests for goodness-of-fit testing of mathematical models to experimental data.

    Science.gov (United States)

    Fişek, M Hamit; Barlas, Zeynep

    2013-03-01

    This paper presents statistical procedures for improving the goodness-of-fit testing of theoretical models to data obtained from laboratory experiments. We use an experimental study in the expectation states research tradition which has been carried out in the "standardized experimental situation" associated with the program to illustrate the application of our procedures. We briefly review the expectation states research program and the fundamentals of resampling statistics as we develop our procedures in the resampling context. The first procedure we develop is a modification of the chi-square test which has been the primary statistical tool for assessing goodness of fit in the EST research program, but has problems associated with its use. We discuss these problems and suggest a procedure to overcome them. The second procedure we present, the "Average Absolute Deviation" test, is a new test and is proposed as an alternative to the chi square test, as being simpler and more informative. The third and fourth procedures are permutation versions of Jonckheere's test for ordered alternatives, and Kendall's tau(b), a rank order correlation coefficient. The fifth procedure is a new rank order goodness-of-fit test, which we call the "Deviation from Ideal Ranking" index, which we believe may be more useful than other rank order tests for assessing goodness-of-fit of models to experimental data. The application of these procedures to the sample data is illustrated in detail. We then present another laboratory study from an experimental paradigm different from the expectation states paradigm - the "network exchange" paradigm, and describe how our procedures may be applied to this data set. Copyright © 2012 Elsevier Inc. All rights reserved.

  13. Public goods games on adaptive coevolutionary networks

    Science.gov (United States)

    Pichler, Elgar; Shapiro, Avi M.

    2017-07-01

    Productive societies feature high levels of cooperation and strong connections between individuals. Public Goods Games (PGGs) are frequently used to study the development of social connections and cooperative behavior in model societies. In such games, contributions to the public good are made only by cooperators, while all players, including defectors, reap public goods benefits, which are shares of the contributions amplified by a synergy factor. Classic results of game theory show that mutual defection, as opposed to cooperation, is the Nash Equilibrium of PGGs in well-mixed populations, where each player interacts with all others. In this paper, we explore the coevolutionary dynamics of a low information public goods game on a complex network in which players adapt to their environment in order to increase individual payoffs relative to past payoffs parameterized by greediness. Players adapt by changing their strategies, either to cooperate or to defect, and by altering their social connections. We find that even if players do not know other players' strategies and connectivity, cooperation can arise and persist despite large short-term fluctuations.

  14. Design of an integrated forward and reverse logistics network optimi-zation model for commercial goods management

    Directory of Open Access Journals (Sweden)

    Eva Ponce-Cueto

    2015-01-01

    Full Text Available In this study, an optimization model is formulated for designing an integrated forward and reverse logistics network in the consumer goods industry. The resultant model is a mixed-integer linear programming model (MILP. Its purpose is to minimize the total costs of the closed-loop supply chain network. It is important to note that the design of the logistics network may involve a trade-off between the total costs and the optimality in commercial goods management. The model comprises a discrete set as potential locations of unlimited capacity warehouses and fixed locations of customers’ zones. It provides decisions related to the facility location and customers’ requirements satisfaction, all of this related with the inventory and shipment decisions of the supply chain. Finally, an application of this model is illustrated by a real-life case in the food and drinks industry. We can conclude that this model can significantly help companies to make decisions about problems associated with logistics network design.

  15. Trade in Cultural Goods: A Case of the Korean Wave in Asia

    Directory of Open Access Journals (Sweden)

    Young Seaon Park

    2014-03-01

    Full Text Available This paper studies the effects of economic development and cultural proximity as common determinants of trade in cultural goods in a dynamic preference selection model. For the empirical analysis, this paper utilizes the gravity framework with importer fixed effects and Poisson pseudo-maximum likelihood estimators. This paper applies the model to Korean export of broadcasting contents to Asian countries. The relative economic development of the export country and the market size of the import country are important determinants of cultural trade, the results of which are generally consistent with traditional goods trade. However, the distance variable does not show much significance, reflecting the unique characteristics of trade in cultural goods.

  16. Cape Verde: Marketing Good Governance Kap Verde: Die Vermarktung von Good Governance

    Directory of Open Access Journals (Sweden)

    Bruce Baker

    2009-01-01

    Full Text Available Faced with a lack of natural resources Cape Verde has made good governance one of its most marketable products. Running parallel to the institutionalisation of democratic politics there has been an overhaul and growing sophistication in public administration, though certain weaknesses persist. This report argues that it is reform and improvement in this area in particular that has enabled this small island state to punch above its weight and achieve remarkable social, economic and political results. But will the successful formula of the past decade prove sufficient for the future? Poverty and unemployment have by no means been conquered. Much of the economic growth has been based in the tourist sector and the government is well aware of the dangers of over-reliance on a single industry. Cape Verde’s midway location between South America and Europe and its increasing international transport connections will continue to offer advantages to drug traffickers. The next few years of the world financial crisis will show whether marketing good governance is enough and whether this is the model for small resource developing states. Der Inselstaat Kap Verde hat seine Anstrengungen zu guter Regierungsführung (Good Governance erfolgreich demonstriert. Parallel zur Institutionalisierung demokratischer Regierungsstrukturen wurde die Verwaltung reformiert und modernisiert, wenn auch immer noch Problembereiche erkennbar sind. Der Autor sieht insbesondere in den politischen und administrativen Reformen den Hintergrund für die erfolgreiche soziale, wirtschaftliche und politische Entwicklung dieser kleinen Inselrepublik. Aber wird dieses Rezept, das im vergangenen Jahrzehnt seine Wirksamkeit beweisen konnte, auch in Zukunft ausreichend sein? Armut und Unterbeschäftigung sind keineswegs besiegt. Ein Großteil des Wirtschaftswachstums basiert auf dem Tourismussektor; die Regierung ist sich der Gefahr wohl bewusst, die in zu großer Abhängigkeit von einem

  17. Statistical alignment: computational properties, homology testing and goodness-of-fit

    DEFF Research Database (Denmark)

    Hein, J; Wiuf, Carsten; Møller, Martin

    2000-01-01

    The model of insertions and deletions in biological sequences, first formulated by Thorne, Kishino, and Felsenstein in 1991 (the TKF91 model), provides a basis for performing alignment within a statistical framework. Here we investigate this model.Firstly, we show how to accelerate the statistical...... alignment algorithms several orders of magnitude. The main innovations are to confine likelihood calculations to a band close to the similarity based alignment, to get good initial guesses of the evolutionary parameters and to apply an efficient numerical optimisation algorithm for finding the maximum...... analysis.Secondly, we propose a new homology test based on this model, where homology means that an ancestor to a sequence pair can be found finitely far back in time. This test has statistical advantages relative to the traditional shuffle test for proteins.Finally, we describe a goodness-of-fit test...

  18. Economic Order Quality Model for Determining the Sales Prices of Fresh Goods at Various Points in Time

    Directory of Open Access Journals (Sweden)

    Po-Yu Chen

    2017-01-01

    Full Text Available Although the safe consumption of goods such as food products, medicine, and vaccines is related to their freshness, consumers frequently understand less than suppliers about the freshness of goods when they purchase them. Because of this lack of information, apart from sales prices, consumers refer only to the manufacturing and expiration dates when deciding whether to purchase and how many of these goods to buy. If dealers could determine the sales price at each point in time and customers’ intention to buy goods of varying freshness, then dealers could set an optimal inventory cycle and allocate a weekly sales price for each point in time, thereby maximizing the profit per unit time. Therefore, in this study, an economic order quality model was established to enable discussion of the optimal control of sales prices. The technique for identifying the optimal solution for the model was determined, the characteristics of the optimal solution were demonstrated, and the implications of the solution’s sensitivity analysis were explained.

  19. Residuals and the Residual-Based Statistic for Testing Goodness of Fit of Structural Equation Models

    Science.gov (United States)

    Foldnes, Njal; Foss, Tron; Olsson, Ulf Henning

    2012-01-01

    The residuals obtained from fitting a structural equation model are crucial ingredients in obtaining chi-square goodness-of-fit statistics for the model. The authors present a didactic discussion of the residuals, obtaining a geometrical interpretation by recognizing the residuals as the result of oblique projections. This sheds light on the…

  20. Good Modeling Practice for PAT Applications: Propagation of Input Uncertainty and Sensitivity Analysis

    DEFF Research Database (Denmark)

    Sin, Gürkan; Gernaey, Krist; Eliasson Lantz, Anna

    2009-01-01

    The uncertainty and sensitivity analysis are evaluated for their usefulness as part of the model-building within Process Analytical Technology applications. A mechanistic model describing a batch cultivation of Streptomyces coelicolor for antibiotic production was used as case study. The input...... compared to the large uncertainty observed in the antibiotic and off-gas CO2 predictions. The output uncertainty was observed to be lower during the exponential growth phase, while higher in the stationary and death phases - meaning the model describes some periods better than others. To understand which...... promising for helping to build reliable mechanistic models and to interpret the model outputs properly. These tools make part of good modeling practice, which can contribute to successful PAT applications for increased process understanding, operation and control purposes. © 2009 American Institute...

  1. Design and Application of Automatic Falling Device for Different Brands of Goods

    Science.gov (United States)

    Yang, Xudong; Ge, Qingkuan; Zuo, Ping; Peng, Tao; Dong, Weifu

    2017-12-01

    The Goods-Falling device is an important device in the intelligent sorting goods sorting system, which is responsible for the temporary storage and counting of the goods, and the function of putting the goods on the conveyor belt according to certain precision requirements. According to the present situation analysis and actual demand of the domestic goods sorting equipment, a vertical type Goods - Falling Device is designed and the simulation model of the device is established. The dynamic characteristics such as the angular error of the opening and closing mechanism are carried out by ADAMS software. The simulation results show that the maximum angular error is 0.016rad. Through the test of the device, the goods falling speed is 7031/hour, the good of the falling position error within 2mm, meet the crawl accuracy requirements of the palletizing robot.

  2. Asymmetric public goods game cooperation through pest control.

    Science.gov (United States)

    Reeves, T; Ohtsuki, H; Fukui, S

    2017-12-21

    Cooperation in a public goods game has been studied extensively to find the conditions for sustaining the commons, yet the effect of asymmetry between agents has been explored very little. Here we study a game theoretic model of cooperation for pest control among farmers. In our simple model, each farmer has a paddy of the same size arranged adjacently on a line. A pest outbreak occurs at an abandoned paddy at one end of the line, directly threatening the frontier farmer adjacent to it. Each farmer pays a cost of his or her choice to an agricultural collective, and the total sum held by the collective is used for pest control, with success probability increasing with the sum. Because the farmers' incentives depend on their distance from the pest outbreak, our model is an asymmetric public goods game. We derive each farmer's cost strategy at the Nash equilibrium. We find that asymmetry among farmers leads to a few unexpected outcomes. The individual costs at the equilibrium do not necessarily increase with how much the future is valued but rather show threshold behavior. Moreover, an increase in the number of farmers can sometimes paradoxically undermine pest prevention. A comparison with a symmetric public goods game model reveals that the farmer at the greatest risk pays a disproportionate amount of cost in the asymmetric game, making the use of agricultural lands less sustainable. Copyright © 2017 The Authors. Published by Elsevier Ltd.. All rights reserved.

  3. Customs control of goods

    Directory of Open Access Journals (Sweden)

    Mentor Gashi

    2015-11-01

    Full Text Available Customs control, is regulated by law in different countries. Different countries define through the law, the control of goods.. Main purpose of this paper is to analyze two types of customs controls, and their effect in reducing avoidance of duty or tax evasion which may be caused by the import of goods of certain companies. For this reason we researched which model is implemented in developing countries and what results were reached through questionnaires. In this sense the next research question, consists in defining the moment of customs control pre or post-clearance control of goods.

  4. Compliance With Recommended Food Safety Practices in Television Cooking Shows.

    Science.gov (United States)

    Cohen, Nancy L; Olson, Rita Brennan

    Examine compliance with recommended food safety practices in television cooking shows. Using a tool based on the Massachusetts Food Establishment Inspection Report, raters examined 39 episodes from 10 television cooking shows. Chefs demonstrated conformance with good retail practices for proper use and storage of utensils in 78% of episodes; preventing contamination (62%), and fingernail care (82%). However, 50% to 88% of episodes were found to be out of compliance with other personal hygiene practices, proper use of gloves and barriers (85% to 100%), and maintaining proper time and temperature controls (93%). Over 90% failed to conform to recommendations regarding preventing contamination through wiping cloths and washing produce. In only 13% of episodes were food safety practices mentioned. There appears to be little attention to food safety during most cooking shows. Celebrity and competing chefs have the opportunity to model and teach good food safety practices for millions of viewers. Copyright © 2016 Society for Nutrition Education and Behavior. Published by Elsevier Inc. All rights reserved.

  5. A Ricardian Model with a Continuum of Goods under Non-homothetic Preferences: Demand Complementarities, Income Distribution, and North-South Trade

    OpenAIRE

    Kiminori Matsuyama

    1999-01-01

    This paper develops a Ricardian model with a continuum of goods when consumers have nonhomothetic preferences. Goods are indexed in terms of priority, and the households add higher-indexed goods to their consumption baskets, as they become richer. South (North) has comparative advantage in a lower (higher) spectrum of goods, hence specializing in goods with lower (higher) income elasticities of demand. Due to the income elasticity difference, a variety of exogenous changes have asymmetric eff...

  6. A theoretical framework of the good health status of Jamaicans: using econometric analysis to model good health status over the life course.

    Science.gov (United States)

    Bourne, Paul A

    2009-07-01

    In recent times, the World Health Organization has increasing drawn attention to the pivotal role of social conditions in determining health status. The non-biological factors produced inequalities in health and need to be considered in health development. In spite of this, extensive review of health Caribbean revealed that no study has examined health status over the life course of Jamaicans. With the value of research in public health, this study is timely and will add value to understand the elderly, middle age and young adults in Jamaica. The aim of this study is to develop models that can be used to examine (or evaluate) health of Jamaicans, elderly, middle age and young adults. The current study used data from a cross-sectional survey which was conducted between July and October 2002. Stratified random probability sampling technique was used to collect the data from 25,018 respondents across the island. The non-response rate for the survey was 29.7% with 20.5% who did not respond to particular questions, 9.0% did not participated in the survey and another 0.2% was rejected due to data cleaning. Logistic regression analyses were used to model health status of Jamaicans, young adults, middle age adults and elderly. The predictive power of the model was tested using Omnibus Test of Model and Hosmer and Lemeshow (24) was used to examine goodness of fit of the model. The correlation matrix was examined in order to ascertain whether autocorrelation (or multi-collinearity) existed between variables. Using logistic regression analysis, eleven variables emerged as statistically significant predictors of current good health Status of Jamaicans (p<0.05). The factors are retirement income (95%CI=0.487-0.958), logged medical expenditure (95% Confidence Interval, CI =0.907-0.993), marital status (Separated or widowed or divorced: 95%CI=0.309-0.464; married: 95%CI=0.495-0.667; Never married), health insurance (95%CI=0.029-0.046), area of residence (other towns:, 95%CI=1

  7. How to solve the tragedy of the commons? Social entrepreneurs and global public goods

    DEFF Research Database (Denmark)

    Ueda, Yoshifumi; Svendsen, Gert Tinggaard

    2002-01-01

    and efficacy of financing a global public good on a local scale is analyzed in a "selective incentive-cum-global public good" model. Because local networks can play a significant role in preserving the global commons, this finding has important policy implications for global public good provisions......We show that when a star type network is formed by an entrepreneur, a non-profit organization run by a social entrepreneur is more reconcilable with the social objective of providing the global public good than a profit organization run by a business entrepreneur. This network formation...

  8. Good leadership for good quality

    OpenAIRE

    Franzon, Vilma Maria

    2016-01-01

    Good leadership is important if you like to have high quality in the results. My experience in the production of the television industry is that conditions for good leadership is insufficient. Therefore, I have tried to get answers for those two questions in my exam report: What are the characteristics of good leadership? What are the prerequisites for good leadership out of production? The method I used is a literature study and observation. I have read a number of books and research studies...

  9. An improved public goods game model with reputation effect on the spatial lattices

    International Nuclear Information System (INIS)

    Zhou, Tianwei; Ding, Shuai; Fan, Wenjuan; Wang, Hao

    2016-01-01

    Highlights: • The reputation effect is added into the spatial public goods game model. • The individual utility is calculated as a combination of payoff and reputation. • The individual reputation will be adaptively modified as the system evolves. • The larger the reputation factor, the higher the cooperation level. - Abstract: How to model the evolution of cooperation within the population is an important and interdisciplinary issue across the academia. In this paper, we propose an improved public goods game model with reputation effect on spatial lattices to investigate the evolution of cooperation regarding the allocation of public resources. In our model, we modify the individual utility or fitness as a product of the present payoff and reputation-related power function, and strategy update adopts a Fermi-like probability function during the game evolution. Meanwhile, for an interaction between a pair of partners, the reputation of a cooperative agent will be accrued beyond two units, but the defective player will decrease his reputation by one unit. Extensive Monte Carlo numerical simulations indicate the introduction of reputation will foster the formation of cooperative clusters, and greatly enhance the level of public cooperation on the spatial lattices. The larger reputation factor leads to the higher cooperation level since the reputation effect will be enormously embedded into the utility evaluation under this scenario. The current results are vastly beneficial to understand the persistence and emergence of cooperation among many natural, social and synthetic systems, and also provide some useful suggestions to devise the feasible social governance measures and modes for the public resources or affairs.

  10. An evolutionary model of cooperation, fairness and altruistic punishment in public good games.

    Directory of Open Access Journals (Sweden)

    Moritz Hetzer

    Full Text Available We identify and explain the mechanisms that account for the emergence of fairness preferences and altruistic punishment in voluntary contribution mechanisms by combining an evolutionary perspective together with an expected utility model. We aim at filling a gap between the literature on the theory of evolution applied to cooperation and punishment, and the empirical findings from experimental economics. The approach is motivated by previous findings on other-regarding behavior, the co-evolution of culture, genes and social norms, as well as bounded rationality. Our first result reveals the emergence of two distinct evolutionary regimes that force agents to converge either to a defection state or to a state of coordination, depending on the predominant set of self- or other-regarding preferences. Our second result indicates that subjects in laboratory experiments of public goods games with punishment coordinate and punish defectors as a result of an aversion against disadvantageous inequitable outcomes. Our third finding identifies disadvantageous inequity aversion as evolutionary dominant and stable in a heterogeneous population of agents endowed initially only with purely self-regarding preferences. We validate our model using previously obtained results from three independently conducted experiments of public goods games with punishment.

  11. An evolutionary model of cooperation, fairness and altruistic punishment in public good games.

    Science.gov (United States)

    Hetzer, Moritz; Sornette, Didier

    2013-01-01

    We identify and explain the mechanisms that account for the emergence of fairness preferences and altruistic punishment in voluntary contribution mechanisms by combining an evolutionary perspective together with an expected utility model. We aim at filling a gap between the literature on the theory of evolution applied to cooperation and punishment, and the empirical findings from experimental economics. The approach is motivated by previous findings on other-regarding behavior, the co-evolution of culture, genes and social norms, as well as bounded rationality. Our first result reveals the emergence of two distinct evolutionary regimes that force agents to converge either to a defection state or to a state of coordination, depending on the predominant set of self- or other-regarding preferences. Our second result indicates that subjects in laboratory experiments of public goods games with punishment coordinate and punish defectors as a result of an aversion against disadvantageous inequitable outcomes. Our third finding identifies disadvantageous inequity aversion as evolutionary dominant and stable in a heterogeneous population of agents endowed initially only with purely self-regarding preferences. We validate our model using previously obtained results from three independently conducted experiments of public goods games with punishment.

  12. Letting people off the hook: when do good deeds excuse transgressions?

    Science.gov (United States)

    Effron, Daniel A; Monin, Benoît

    2010-12-01

    Three studies examined when and why an actor's prior good deeds make observers more willing to excuse--or license--his or her subsequent, morally dubious behavior. In a pilot study, actors' good deeds made participants more forgiving of the actors' subsequent transgressions. In Study 1, participants only licensed blatant transgressions that were in a different domain than actors' good deeds; blatant transgressions in the same domain appeared hypocritical and suppressed licensing (e.g., fighting adolescent drug use excused sexual harassment, but fighting sexual harassment did not). Study 2 replicated these effects and showed that good deeds made observers license ambiguous transgressions (e.g., behavior that might or might not represent sexual harassment) regardless of whether the good deeds and the transgression were in the same or in a different domain--but only same-domain good deeds did so by changing participants' construal of the transgressions. Discussion integrates two models of why licensing occurs.

  13. Comparing the Goodness of Different Statistical Criteria for Evaluating the Soil Water Infiltration Models

    Directory of Open Access Journals (Sweden)

    S. Mirzaee

    2016-02-01

    interpretation of efficiency criteria (NSEI and its modified forms used to evaluate the models. Materials and Methods: The collection data of 145 point-data of measured infiltration of water into soil were used. The infiltration data were obtained by the Double Rings method in different soils of Iran having a wide range of soil characteristics. The study areas were located in Zanjan, Fars, Ardebil, Bushehr and Isfahan provinces. The soils of these regions are classified as Mollisols, Aridisols, Inceptisols and Entisols soil taxonomy orders. The land use of the study area consisted of wheat, barley, pasture and fallow land.The parameters of the models (i.e. Philip (18, Green and Ampt (3, SCS (23, Kostiakov (6, Horton (5, and Kostiakov and Lewis (11 models were determined, using the least square optimization method. All models were fitted to experimental infiltration data using an iterative nonlinear regression procedure, which finds the values of the fitting parameters that give the best fit between the model and the data. The fitting process was performed using the MatLab 7.7.0 (R2008b Software Package. Then, the ability of infiltration of water into soil models with the mean of coefficient of determination (R2, root mean square error (RMSE, efficiency criteria(NSEI and modified forms (such as NSEjI, NSESQRTI,NSElnI and NSEiI were determined and goodness of criteria was compared for the selection of the best model. Results and Discussion: The results showed the mean of RMSE for all soils cannot always be a suitable index for the evaluation of infiltration of water into soil models. A more valid comparison withNSEI, NSEjI, NSESQRTI, NSElnI indices indicated that these indices also cannot apparently distinguish among the infiltration models for the estimation of cumulative infiltration. These indices are sensitive to the large amount of data. The NSEiI index with giving more weight to infiltration data in shorter times was selected as the most appropriate index for comparing

  14. A Monte Carlo-adjusted goodness-of-fit test for parametric models describing spatial point patterns

    KAUST Repository

    Dao, Ngocanh; Genton, Marc G.

    2014-01-01

    Assessing the goodness-of-fit (GOF) for intricate parametric spatial point process models is important for many application fields. When the probability density of the statistic of the GOF test is intractable, a commonly used procedure is the Monte

  15. The ESDP and Good Practices of Local Development in Peripheral Areas

    DEFF Research Database (Denmark)

    Gallina, Andrea; Capecchi, Vittorio

    shows that the EU documents concerned with spatial planning and regional development suffer from a strong ambiguity in the choice of the development model (either neoliberal or solidaristic economy) both within Europe and in relation with Third countries. Through the analysis of selected good practices...

  16. Correlated equilibria in homogenous good Bertrand competition

    DEFF Research Database (Denmark)

    Jann, Ole; Schottmüller, Christoph

    2015-01-01

    We show that there is a unique correlated equilibrium, identical to the unique Nash equilibrium, in the classic Bertrand oligopoly model with homogenous goods and identical marginal costs. This provides a theoretical underpinning for the so-called "Bertrand paradox'' as well as its most general f...... formulation to date. Our proof generalizes to asymmetric marginal costs and arbitrarily many players in the following way: The market price cannot be higher than the second lowest marginal cost in any correlated equilibrium....

  17. A simulation-based goodness-of-fit test for random effects in generalized linear mixed models

    DEFF Research Database (Denmark)

    Waagepetersen, Rasmus

    2006-01-01

    The goodness-of-fit of the distribution of random effects in a generalized linear mixed model is assessed using a conditional simulation of the random effects conditional on the observations. Provided that the specified joint model for random effects and observations is correct, the marginal...... distribution of the simulated random effects coincides with the assumed random effects distribution. In practice, the specified model depends on some unknown parameter which is replaced by an estimate. We obtain a correction for this by deriving the asymptotic distribution of the empirical distribution...

  18. A simulation-based goodness-of-fit test for random effects in generalized linear mixed models

    DEFF Research Database (Denmark)

    Waagepetersen, Rasmus Plenge

    The goodness-of-fit of the distribution of random effects in a generalized linear mixed model is assessed using a conditional simulation of the random effects conditional on the observations. Provided that the specified joint model for random effects and observations is correct, the marginal...... distribution of the simulated random effects coincides with the assumed random effects distribution. In practice the specified model depends on some unknown parameter which is replaced by an estimate. We obtain a correction for this by deriving the asymptotic distribution of the empirical distribution function...

  19. Financial Giffen Goods

    DEFF Research Database (Denmark)

    Poulsen, Rolf; Rasmussen, Kourosh Marjani

    2008-01-01

    In the basic Markowitz and Merton models, a stock’s weight in efficient portfolios goes up if its expected rate of return goes up. Put differently, there are no financial Giffen goods. By an example from mortgage choice we illustrate that for more complicated portfolio problems Giffen effects do...

  20. Network public goods with asymmetric information about cooperation preferences and network degree

    NARCIS (Netherlands)

    Dijkstra, Jacob; van Assen, Marcus

    2013-01-01

    We propose a game theoretical model of one-shot network public goods formalizing the 'closure argument' that cooperation is more frequent in denser groups or networks. Equilibrium analyses show that (i) an 'inefficiency problem' exists: players all preferring mutual cooperation need not all

  1. Selecting a Dynamic Simulation Modeling Method for Health Care Delivery Research—Part 2: Report of the ISPOR Dynamic Simulation Modeling Emerging Good Practices Task Force

    NARCIS (Netherlands)

    Marshall, Deborah A.; Burgos-Liz, Lina; IJzerman, Maarten Joost; Crown, William; Padula, William V.; Wong, Peter K.; Pasupathy, Kalyan S.; Higashi, Mitchell K.; Osgood, Nathaniel D.

    2015-01-01

    In a previous report, the ISPOR Task Force on Dynamic Simulation Modeling Applications in Health Care Delivery Research Emerging Good Practices introduced the fundamentals of dynamic simulation modeling and identified the types of health care delivery problems for which dynamic simulation modeling

  2. "Everyone just ate good food": 'Good food' in Islamabad, Pakistan.

    Science.gov (United States)

    Hasnain, Saher

    2018-08-01

    In recent years, consumption of alternatively produced foods has increased in popularity in response to the deleterious effects of rapidly globalising and industrialised food systems. Concerns over food safety in relation to these changes may result from elevated levels of risk and changing perceptions associated with food production practices. This paper explores how the middle class residents of Islamabad, Pakistan, use the concept of 'good food' to reconnect themselves with nature, changing food systems, and traditional values. The paper also demonstrates how these ideas relate to those of organic, local, and traditional food consumption as currently used in more economically developed states in the Global North. Through research based on participant observation and semi-structured interviews, this paper illustrates that besides price and convenience, purity, freshness, association with specific places, and 'Pakistani-ness' were considered as the basis for making decisions about 'good food'. The results show that while individuals are aware of and have some access to imported organic and local food, they prefer using holistic and culturally informed concepts of 'good food' instead that reconnect them with food systems. I argue that through conceptualisations of 'good food', the urban middle class in Islamabad is reducing their disconnection and dis-embeddedness from nature, the food systems, and their social identities. The paper contributes to literature on food anxieties, reconnections in food geography, and 'good food' perceptions, with a focus on Pakistan. Copyright © 2018. Published by Elsevier Ltd.

  3. Model shows future cut in U.S. ozone levels

    International Nuclear Information System (INIS)

    Anon.

    1991-01-01

    A joint U.S. auto-oil industry research program says modeling shows that changing gasoline composition can reduce ozone levels for Los Angeles in 2010 and for New York City and Dallas-Fort Worth in 2005. The air quality modeling was based on vehicle emissions research data released late last year (OGJ, Dec. 24, 1990, p. 20). The effort is sponsored by the big three auto manufacturers and 14 oil companies. Sponsors the cars and small trucks account for about one third of ozone generated in the three cities studied but by 2005-10 will account for only 5-9%

  4. Summary goodness-of-fit statistics for binary generalized linear models with noncanonical link functions.

    Science.gov (United States)

    Canary, Jana D; Blizzard, Leigh; Barry, Ronald P; Hosmer, David W; Quinn, Stephen J

    2016-05-01

    Generalized linear models (GLM) with a canonical logit link function are the primary modeling technique used to relate a binary outcome to predictor variables. However, noncanonical links can offer more flexibility, producing convenient analytical quantities (e.g., probit GLMs in toxicology) and desired measures of effect (e.g., relative risk from log GLMs). Many summary goodness-of-fit (GOF) statistics exist for logistic GLM. Their properties make the development of GOF statistics relatively straightforward, but it can be more difficult under noncanonical links. Although GOF tests for logistic GLM with continuous covariates (GLMCC) have been applied to GLMCCs with log links, we know of no GOF tests in the literature specifically developed for GLMCCs that can be applied regardless of link function chosen. We generalize the Tsiatis GOF statistic originally developed for logistic GLMCCs, (TG), so that it can be applied under any link function. Further, we show that the algebraically related Hosmer-Lemeshow (HL) and Pigeon-Heyse (J(2) ) statistics can be applied directly. In a simulation study, TG, HL, and J(2) were used to evaluate the fit of probit, log-log, complementary log-log, and log models, all calculated with a common grouping method. The TG statistic consistently maintained Type I error rates, while those of HL and J(2) were often lower than expected if terms with little influence were included. Generally, the statistics had similar power to detect an incorrect model. An exception occurred when a log GLMCC was incorrectly fit to data generated from a logistic GLMCC. In this case, TG had more power than HL or J(2) . © 2015 John Wiley & Sons Ltd/London School of Economics.

  5. Meta-analysis suggests choosy females get sexy sons more than "good genes".

    Science.gov (United States)

    Prokop, Zofia M; Michalczyk, Łukasz; Drobniak, Szymon M; Herdegen, Magdalena; Radwan, Jacek

    2012-09-01

    Female preferences for specific male phenotypes have been documented across a wide range of animal taxa, including numerous species where males contribute only gametes to offspring production. Yet, selective pressures maintaining such preferences are among the major unknowns of evolutionary biology. Theoretical studies suggest that preferences can evolve if they confer genetic benefits in terms of increased attractiveness of sons ("Fisherian" models) or overall fitness of offspring ("good genes" models). These two types of models predict, respectively, that male attractiveness is heritable and genetically correlated with fitness. In this meta-analysis, we draw general conclusions from over two decades worth of empirical studies testing these predictions (90 studies on 55 species in total). We found evidence for heritability of male attractiveness. However, attractiveness showed no association with traits directly associated with fitness (life-history traits). Interestingly, it did show a positive correlation with physiological traits, which include immunocompetence and condition. In conclusion, our results support "Fisherian" models of preference evolution, while providing equivocal evidence for "good genes." We pinpoint research directions that should stimulate progress in our understanding of the evolution of female choice. © 2012 The Author(s). Evolution© 2012 The Society for the Study of Evolution.

  6. Let's Cancel the Dog-and-Pony Show

    Science.gov (United States)

    Marshall, Kim

    2012-01-01

    Why are so many educators willing to give credence to observations based on announced visits? Perhaps it's avoidance or a failure to distinguish between good teachers and good teaching, or perhaps it's the way the conventional teacher-evaluation model limits administrators' options. To put it bluntly, an evaluation process that relies on announced…

  7. ARA and ARI imperfect repair models: Estimation, goodness-of-fit and reliability prediction

    International Nuclear Information System (INIS)

    Toledo, Maria Luíza Guerra de; Freitas, Marta A.; Colosimo, Enrico A.; Gilardoni, Gustavo L.

    2015-01-01

    An appropriate maintenance policy is essential to reduce expenses and risks related to equipment failures. A fundamental aspect to be considered when specifying such policies is to be able to predict the reliability of the systems under study, based on a well fitted model. In this paper, the classes of models Arithmetic Reduction of Age and Arithmetic Reduction of Intensity are explored. Likelihood functions for such models are derived, and a graphical method is proposed for model selection. A real data set involving failures in trucks used by a Brazilian mining is analyzed considering models with different memories. Parameters, namely, shape and scale for Power Law Process, and the efficiency of repair were estimated for the best fitted model. Estimation of model parameters allowed us to derive reliability estimators to predict the behavior of the failure process. These results are a valuable information for the mining company and can be used to support decision making regarding preventive maintenance policy. - Highlights: • Likelihood functions for imperfect repair models are derived. • A goodness-of-fit technique is proposed as a tool for model selection. • Failures in trucks owned by a Brazilian mining are modeled. • Estimation allowed deriving reliability predictors to forecast the future failure process of the trucks

  8. Is Good Fit Related to Good Behaviour? Goodness of Fit between Daycare Teacher-Child Relationships, Temperament, and Prosocial Behaviour

    Science.gov (United States)

    Hipson, Will E.; Séguin, Daniel G.

    2016-01-01

    The Goodness-of-Fit model [Thomas, A., & Chess, S. (1977). Temperament and development. New York: Brunner/Mazel] proposes that a child's temperament interacts with the environment to influence child outcomes. In the past, researchers have shown how the association between the quality of the teacher-child relationship in daycare and child…

  9. Models of alien species richness show moderate predictive accuracy and poor transferability

    Directory of Open Access Journals (Sweden)

    César Capinha

    2018-06-01

    Full Text Available Robust predictions of alien species richness are useful to assess global biodiversity change. Nevertheless, the capacity to predict spatial patterns of alien species richness remains largely unassessed. Using 22 data sets of alien species richness from diverse taxonomic groups and covering various parts of the world, we evaluated whether different statistical models were able to provide useful predictions of absolute and relative alien species richness, as a function of explanatory variables representing geographical, environmental and socio-economic factors. Five state-of-the-art count data modelling techniques were used and compared: Poisson and negative binomial generalised linear models (GLMs, multivariate adaptive regression splines (MARS, random forests (RF and boosted regression trees (BRT. We found that predictions of absolute alien species richness had a low to moderate accuracy in the region where the models were developed and a consistently poor accuracy in new regions. Predictions of relative richness performed in a superior manner in both geographical settings, but still were not good. Flexible tree ensembles-type techniques (RF and BRT were shown to be significantly better in modelling alien species richness than parametric linear models (such as GLM, despite the latter being more commonly applied for this purpose. Importantly, the poor spatial transferability of models also warrants caution in assuming the generality of the relationships they identify, e.g. by applying projections under future scenario conditions. Ultimately, our results strongly suggest that predictability of spatial variation in richness of alien species richness is limited. The somewhat more robust ability to rank regions according to the number of aliens they have (i.e. relative richness, suggests that models of aliens species richness may be useful for prioritising and comparing regions, but not for predicting exact species numbers.

  10. Is electricity a public good?

    International Nuclear Information System (INIS)

    Salies, Evens; Kiesling, Lynne; Giberson, Michael

    2007-04-01

    Wholesale electricity markets are increasingly driven by the rules of competition while recent outages in different regions of the world suggest that security of supply is a public good. The objective of this paper is to show that security of supply and more generally, electricity supply has both public and private characteristics. Whilst the public good characteristic explains why some producers may prefer to free ride on others' investments to maintain reliability, the private good aspect of reliability shows that agents may have a variety of preferences for reliability. Then by relying on the concept of Pareto-relevant externality, the paper explores the private aspect of reliability for the prospect of creating and selling reliability as a differentiated product complementary to bulk power markets. Finally, policy recommendations are derived that aim to enhance information content in the network. Initially published in 'Revue de l'OFCE' No. 101

  11. Bifactor Models Show a Superior Model Fit: Examination of the Factorial Validity of Parent-Reported and Self-Reported Symptoms of Attention-Deficit/Hyperactivity Disorders in Children and Adolescents.

    Science.gov (United States)

    Rodenacker, Klaas; Hautmann, Christopher; Görtz-Dorten, Anja; Döpfner, Manfred

    2016-01-01

    Various studies have demonstrated that bifactor models yield better solutions than models with correlated factors. However, the kind of bifactor model that is most appropriate is yet to be examined. The current study is the first to test bifactor models across the full age range (11-18 years) of adolescents using self-reports, and the first to test bifactor models with German subjects and German questionnaires. The study sample included children and adolescents aged between 6 and 18 years recruited from a German clinical sample (n = 1,081) and a German community sample (n = 642). To examine the factorial validity, we compared unidimensional, correlated factors and higher-order and bifactor models and further tested a modified incomplete bifactor model for measurement invariance. Bifactor models displayed superior model fit statistics compared to correlated factor models or second-order models. However, a more parsimonious incomplete bifactor model with only 2 specific factors (inattention and impulsivity) showed a good model fit and a better factor structure than the other bifactor models. Scalar measurement invariance was given in most group comparisons. An incomplete bifactor model would suggest that the specific inattention and impulsivity factors represent entities separable from the general attention-deficit/hyperactivity disorder construct and might, therefore, give way to a new approach to subtyping of children beyond and above attention-deficit/hyperactivity disorder. © 2016 S. Karger AG, Basel.

  12. Financing unemployment benefits by goods market competition: fiscal policy and deregulation with market imperfections

    OpenAIRE

    Antonio Scial…; Riccardo Tilli

    2007-01-01

    We consider a model in which the labor market is characterized by search frictions and there is monopolistic competition in the goods market. We introduce proportional income taxation and unemployment benefits with Government balanced budget constraint. Then, we evaluate the effects of both more competition in the goods market and higher unemployment benefits on labor market equilibrium and equilibrium tax rate. We show that more competition has a positive effect on equilibrium unemployment a...

  13. A simple test for PPP among traded goods

    NARCIS (Netherlands)

    Ph.H.B.F. Franses (Philip Hans); D.J.C. van Dijk (Dick)

    2002-01-01

    textabstractThe so-called Balassa-Samuelson model implies that relative prices of non-traded goods may be nonstationary and, hence, that PPP should preferably be tested on real exchange rates based on prices of traded goods only. We propose a simple test for PPP among traded goods which can be

  14. Goodness of Fit of Skills Assessment Approaches: Insights from Patterns of Real vs. Synthetic Data Sets

    Science.gov (United States)

    Beheshti, Behzad; Desmarais, Michel C.

    2015-01-01

    This study investigates the issue of the goodness of fit of different skills assessment models using both synthetic and real data. Synthetic data is generated from the different skills assessment models. The results show wide differences of performances between the skills assessment models over synthetic data sets. The set of relative performances…

  15. A latent class multiple constraint multiple discrete-continuous extreme value model of time use and goods consumption.

    Science.gov (United States)

    2016-06-01

    This paper develops a microeconomic theory-based multiple discrete continuous choice model that considers: (a) that both goods consumption and time allocations (to work and non-work activities) enter separately as decision variables in the utility fu...

  16. Paying for international environmental public goods.

    Science.gov (United States)

    Arriagada, Rodrigo; Perrings, Charles

    2011-11-01

    Supply of international environmental public goods must meet certain conditions to be socially efficient, and several reasons explain why they are currently undersupplied. Diagnosis of the public goods failure associated with particular ecosystem services is critical to the development of the appropriate international response. There are two categories of international environmental public goods that are most likely to be undersupplied. One has an additive supply technology and the other has a weakest link supply technology. The degree to which the collective response should be targeted depends on the importance of supply from any one country. In principle, the solution for the undersupply lies in payments designed to compensate local providers for the additional costs they incur in meeting global demand. Targeted support may take the form of direct investment in supply (the Global Environment Facility model) or of payments for the benefits of supply (the Payments for Ecosystem Services model).

  17. Managing Human Factors Related Risks. The Advanced Training Model in Dangerous Goods Transport on Roads

    Directory of Open Access Journals (Sweden)

    Jelizaveta Janno

    2018-06-01

    Full Text Available This paper studies the methodological essence of dangerous goods (DG training courses for drivers and dangerous goods safety advisers (DGSA. The aim of the research is to advance existing teacher-centered course model in Estonia with learner-centered methods that best suit specific objectives and meet expected learning outcomes, as well as to improve DG training model with the integrated use of interactive teaching methods. The paper presents a qualitative development research strategy based on studies regarding ADR regulations training courses in Estonia as well as on the analysis of teaching methods applied in the professional training of adults. The data is collected in two steps: firstly by implementing questionnaires for consignors/ consignees, freight forwarders carrier companies and drivers, secondly during in-depth interviews/ focus group meeting with DG regulations training companies’ providers. Implementing methodology of qualitative comparison analysis (QCA combination of best suitable teaching methods is identified. After following in-depth interviews and performing a focus group, these combinations are further used as input for developing existing course model with integrated use of blended learning alternatives, where digital media meets with traditional classroom meth-ods. Results of this research contribute coming up with interactive methodological approach within ADR regulations training courses that meet the best trainees’ expectations and fulfills the risk management aim.

  18. National Interference in Local Public Good Provision

    NARCIS (Netherlands)

    A.J. Dur (Robert); K. Staal (Klaas)

    2003-01-01

    textabstractWe analyze a simple model of local public good provision in a country consisting of a large number of heterogeneous regions, each comprising two districts, a city and a village. When districts remain autonomous and local public goods have positive spillover effects on the neighbouring

  19. Research on Effective Supply Mode of Rural Public Goods

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    On the basis of definition and classification of rural public goods, this paper analyses the status quo of public goods supply in vast rural areas of China, and it indicates that the electricity and communication facility in rural areas have not yet been popularized; the culture and education facility is critically backward; the medical care and social warfare institutions are short. It points out the rational supply model of public goods as follows: the government plays dominant role in the public goods supply with a large amount of investments, related to the quality of living and production of multitudinous farmers; small wieldy quasi-public goods that can be easily supplied and marginalized public goods can introduce multiplex supply main body under the framework of government guidance. According to this model, corresponding policy suggestions are put forward as follows: increase financial inputs, and perfect local financial system; actively encourage the majority of farmers in rural areas to participate in public goods supply mechanism, so that the supply has pertinence; vigorously develop multiplex supply system of rural public goods, to ensure effective supply.

  20. Visualizing Three-dimensional Slab Geometries with ShowEarthModel

    Science.gov (United States)

    Chang, B.; Jadamec, M. A.; Fischer, K. M.; Kreylos, O.; Yikilmaz, M. B.

    2017-12-01

    Seismic data that characterize the morphology of modern subducted slabs on Earth suggest that a two-dimensional paradigm is no longer adequate to describe the subduction process. Here we demonstrate the effect of data exploration of three-dimensional (3D) global slab geometries with the open source program ShowEarthModel. ShowEarthModel was designed specifically to support data exploration, by focusing on interactivity and real-time response using the Vrui toolkit. Sixteen movies are presented that explore the 3D complexity of modern subduction zones on Earth. The first movie provides a guided tour through the Earth's major subduction zones, comparing the global slab geometry data sets of Gudmundsson and Sambridge (1998), Syracuse and Abers (2006), and Hayes et al. (2012). Fifteen regional movies explore the individual subduction zones and regions intersecting slabs, using the Hayes et al. (2012) slab geometry models where available and the Engdahl and Villasenor (2002) global earthquake data set. Viewing the subduction zones in this way provides an improved conceptualization of the 3D morphology within a given subduction zone as well as the 3D spatial relations between the intersecting slabs. This approach provides a powerful tool for rendering earth properties and broadening capabilities in both Earth Science research and education by allowing for whole earth visualization. The 3D characterization of global slab geometries is placed in the context of 3D slab-driven mantle flow and observations of shear wave splitting in subduction zones. These visualizations contribute to the paradigm shift from a 2D to 3D subduction framework by facilitating the conceptualization of the modern subduction system on Earth in 3D space.

  1. Bootstrap Power of Time Series Goodness of fit tests

    Directory of Open Access Journals (Sweden)

    Sohail Chand

    2013-10-01

    Full Text Available In this article, we looked at power of various versions of Box and Pierce statistic and Cramer von Mises test. An extensive simulation study has been conducted to compare the power of these tests. Algorithms have been provided for the power calculations and comparison has also been made between the semi parametric bootstrap methods used for time series. Results show that Box-Pierce statistic and its various versions have good power against linear time series models but poor power against non linear models while situation reverses for Cramer von Mises test. Moreover, we found that dynamic bootstrap method is better than xed design bootstrap method.

  2. Multilateral trade liberalization and public goods provision in a North-South trade model with nonhomothetic preferences

    OpenAIRE

    Stibora, J.J.; Vaal, A. de

    2012-01-01

    Under nonhomothetic preferences developing countries are less likely to gain from multilateral trade liberalization than developed countries. This paper shows that this relative disadvantage for developing countries changes when the effects on public good provision are taken into account. The impact it has depends on the strength of their comparative advantage in export markets. We show that a strong (weak) comparative advantage in export markets mitigates (reinforces) the relative disadvanta...

  3. Supporting good practice in the provision of services to people with comorbid mental health and alcohol and other drug problems in Australia: describing key elements of good service models

    Directory of Open Access Journals (Sweden)

    Canaway Rachel

    2010-12-01

    Full Text Available Abstract Background The co-occurrence of mental illness and substance use problems (referred to as "comorbidity" in this paper is common, and is often reported by service providers as the expectation rather than the exception. Despite this, many different treatment service models are being used in the alcohol and other drugs (AOD and mental health (MH sectors to treat this complex client group. While there is abundant literature in the area of comorbidity treatment, no agreed overarching framework to describe the range of service delivery models is apparent internationally or at the national level. The aims of the current research were to identify and describe elements of good practice in current service models of treatment of comorbidity in Australia. The focus of the research was on models of service delivery. The research did not aim to measure the client outcomes achieved by individual treatment services, but sought to identify elements of good practice in services. Methods Australian treatment services were identified to take part in the study through a process of expert consultation. The intent was to look for similarities in the delivery models being implemented across a diverse set of services that were perceived to be providing good quality treatment for people with comorbidity problems. Results A survey was designed based on a concept map of service delivery devised from a literature review. Seventeen Australian treatment services participated in the survey, which explored the context in which services operate, inputs such as organisational philosophy and service structure, policies and procedures that guide the way in which treatment is delivered by the service, practices that reflect the way treatment is provided to clients, and client impacts. Conclusions The treatment of people with comorbidity of mental health and substance use disorders presents complex problems that require strong but flexible service models. While the treatment

  4. Research on Goods and the Ship Interaction Based on ADAMS

    Directory of Open Access Journals (Sweden)

    Song Fangzhen

    2017-01-01

    Full Text Available The equivalent method of the relative movement goods on board is discussed in details. This method is to establish dynamic model based on moving trajectory of gravity-center for goods and to take rigid body geometric model with the trajectory as constraints in ADAMS. The difference of simulation methods for the different goods in carrier rolling is compared. The interact of relative moving objects with bulk carrier is discussed by using the ADAMS model. It is verified that the ballast water can maintain the ship’s stability by means of the ADAMS model.

  5. Adaptive play stabilizes cooperation in continuous public goods games

    Science.gov (United States)

    Wu, Te; Wang, Long

    2018-04-01

    We construct a model to study the effects of repeated interaction on the evolution of cooperation in continuous public goods games. Instead of preassigning the duration of repeatedness, the likelihood of group entering next round interaction is positively dependent on the group's current cooperativeness. Meanwhile, when the disturbance happens, the interaction terminates. Under rare mutations, we show that such adaptive play can lead to the dominance of full cooperative state for weak disturbance. For fairly strong disturbance, all-or-none cooperative states share higher fractions of time in the long run, results similar to the ones reported in the study (Pinheiro et al., 2014) while differing from the ones reported in another relevant study (Van Segbroeck et al., 2012), although only strategy space and way determining next round vary. Our results remain valid when groups enter next round with a given probability independent of groups' cooperativeness. In the synergic public goods games, the positive effects of repeated interactions on promoting cooperation is further strengthened. In the discounted public goods game, only very weak disturbance can lead to the dominance of full cooperative state while fairly strong disturbance can favor both full cooperative state and a partially cooperative state. Our study thus enriches the literature on the evolution of cooperation in repeated public goods games.

  6. The generalized good cut equation

    International Nuclear Information System (INIS)

    Adamo, T M; Newman, E T

    2010-01-01

    The properties of null geodesic congruences (NGCs) in Lorentzian manifolds are a topic of considerable importance. More specifically NGCs with the special property of being shear-free or asymptotically shear-free (as either infinity or a horizon is approached) have received a great deal of recent attention for a variety of reasons. Such congruences are most easily studied via solutions to what has been referred to as the 'good cut equation' or the 'generalization good cut equation'. It is the purpose of this paper to study these equations and show their relationship to each other. In particular we show how they all have a four-complex-dimensional manifold (known as H-space, or in a special case as complex Minkowski space) as a solution space.

  7. Robots, Disability, and Good Human Life

    Directory of Open Access Journals (Sweden)

    Antonio Carnevale

    2015-02-01

    Full Text Available In this paper, I want to show the role that emerging robotic technologies could play in the future in daily life of disabled people. When I talk about disability, I mean any temporary or permanent limitation due to a chronic disease and deficit, as well as, socially disadvantaged conditions, which imply functional and emotional restrictions experienced at any age. All these limitations can be characterized by a specific mental and physical impairment or, more often, by a cluster of medical impairments and social barriers. To this end, the academic literature has generally differentiated between two disability models: 'medical' versus 'social'. The main attempt of this paper consists into showing how the development of robotic technologies — particularly in assistive and healthcare fields — could allow us to go beyond this outdated dichotomy, contributing to create new philosophical premises to rethink the universality of the human condition, that is, the sense of what we intend for 'good human life'.

  8. Framing and misperceptions in a public good experiment

    DEFF Research Database (Denmark)

    Fosgaard, Toke; Hansen, Lars Gårn; Wengström, Erik Roland

    Earlier studies have found that a substantial part of the contributions in public good games can be explained by subjects misperceiving the game's incentives. Using a large-scale public good experiment, we show that subtle changes in how the game is framed substantially affect such misperceptions...... and that this explains major parts of framing effect on subjects' behavior. When controlling for the different levels of misperception between frames, the framing effect on subjects' cooperation preferences disappears.......Earlier studies have found that a substantial part of the contributions in public good games can be explained by subjects misperceiving the game's incentives. Using a large-scale public good experiment, we show that subtle changes in how the game is framed substantially affect such misperceptions...

  9. Model-Based Policymaking: A Framework to Promote Ethical “Good Practice” in Mathematical Modeling for Public Health Policymaking

    Science.gov (United States)

    Boden, Lisa A.; McKendrick, Iain J.

    2017-01-01

    Mathematical models are increasingly relied upon as decision support tools, which estimate risks and generate recommendations to underpin public health policies. However, there are no formal agreements about what constitutes professional competencies or duties in mathematical modeling for public health. In this article, we propose a framework to evaluate whether mathematical models that assess human and animal disease risks and control strategies meet standards consistent with ethical “good practice” and are thus “fit for purpose” as evidence in support of policy. This framework is derived from principles of biomedical ethics: independence, transparency (autonomy), beneficence/non-maleficence, and justice. We identify ethical risks associated with model development and implementation and consider the extent to which scientists are accountable for the translation and communication of model results to policymakers so that the strengths and weaknesses of the scientific evidence base and any socioeconomic and ethical impacts of biased or uncertain predictions are clearly understood. We propose principles to operationalize a framework for ethically sound model development and risk communication between scientists and policymakers. These include the creation of science–policy partnerships to mutually define policy questions and communicate results; development of harmonized international standards for model development; and data stewardship and improvement of the traceability and transparency of models via a searchable archive of policy-relevant models. Finally, we suggest that bespoke ethical advisory groups, with relevant expertise and access to these resources, would be beneficial as a bridge between science and policy, advising modelers of potential ethical risks and providing overview of the translation of modeling advice into policy. PMID:28424768

  10. 8 CFR 274a.4 - Good faith defense.

    Science.gov (United States)

    2010-01-01

    ... 8 Aliens and Nationality 1 2010-01-01 2010-01-01 false Good faith defense. 274a.4 Section 274a.4... ALIENS Employer Requirements § 274a.4 Good faith defense. An employer or a recruiter or referrer for a fee for employment who shows good faith compliance with the employment verification requirements of...

  11. Pricing Digital Goods: Discontinuous Costs and Shared Infrastructure

    OpenAIRE

    Ke-Wei Huang; Arun Sundararajan

    2006-01-01

    We develop and analyze a model of pricing for digital products with discontinuous supply functions. This characterizes a number of information technology-based products and services for which variable increases in demand are fulfilled by the addition of "blocks" of computing or network infrastructure. Examples include internet service, telephony, online trading, on-demand software, digital music, streamed video-on-demand and grid computing. These goods are often modeled as information goods w...

  12. Programming for the Public Good: Ensuring Public Value Through the Cooperative Extension Program Development Model

    Directory of Open Access Journals (Sweden)

    Nancy Franz

    2015-06-01

    Full Text Available Effective Cooperative Extension programs produce important private and public value for individuals, families, businesses, and communities. However, the public value of Extension programming often goes unmeasured and unarticulated. Extension needs to reclaim its role as a key provider of public value for Land-Grant Universities through strong educational programs driven by infusing public value into all elements of the Extension Program Development Model. This article describes Extension’s public value movement including organizational, professional, program, and scholarship development efforts to enhance public good effectiveness articulation. Lessons learned, implications, and next steps for Extension’s public value success through a strong program development model are also shared.

  13. Evaluating e-Government and Good Governance Correlation

    Directory of Open Access Journals (Sweden)

    Suhardi Suhardi

    2016-03-01

    Full Text Available Assessing the achievement of Indonesian government institutions in implementing e-government has been conducted since around a decade ago. Several national assessments are available with almost the same ranking results. There is an agreement that the ultimate goal of e-government implementation is to achieve good government governance (GGG, while success stories of e-government require good governance practices. This study explored the correlation between e-government achievement and GGG achievement in Indonesia. Spearman’s rank correlation was used to characterize the relationship strength between e-government assessment results and good governance assessment results. The data were collected from institutions that participated in e-government and good governance assessments. The results showed that the correlation between these two entities is not very strong. Most cases showed that e-government implementation and the achievement of good governance have only a moderate positive correlation and none of the studied cases indicated a significant connection. This result can be attributed to the lack of emphasis on goals achievement in the assessments. Thus, it is recommended that future Indonesian e-government assessments should involve impact indicators.

  14. Good soldiers and good actors: prosocial and impression management motives as interactive predictors of affiliative citizenship behaviors.

    Science.gov (United States)

    Grant, Adam M; Mayer, David M

    2009-07-01

    Researchers have discovered inconsistent relationships between prosocial motives and citizenship behaviors. We draw on impression management theory to propose that impression management motives strengthen the association between prosocial motives and affiliative citizenship by encouraging employees to express citizenship in ways that both "do good" and "look good." We report 2 studies that examine the interactions of prosocial and impression management motives as predictors of affiliative citizenship using multisource data from 2 different field samples. Across the 2 studies, we find positive interactions between prosocial and impression management motives as predictors of affiliative citizenship behaviors directed toward other people (helping and courtesy) and the organization (initiative). Study 2 also shows that only prosocial motives predict voice-a challenging citizenship behavior. Our results suggest that employees who are both good soldiers and good actors are most likely to emerge as good citizens in promoting the status quo.

  15. Building of Reusable Reverse Logistics Model and its Optimization Considering the Decision of Backorder or Next Arrival of Goods

    Science.gov (United States)

    Lee, Jeong-Eun; Gen, Mitsuo; Rhee, Kyong-Gu; Lee, Hee-Hyol

    This paper deals with the building of the reusable reverse logistics model considering the decision of the backorder or the next arrival of goods. The optimization method to minimize the transportation cost and to minimize the volume of the backorder or the next arrival of goods occurred by the Just in Time delivery of the final delivery stage between the manufacturer and the processing center is proposed. Through the optimization algorithms using the priority-based genetic algorithm and the hybrid genetic algorithm, the sub-optimal delivery routes are determined. Based on the case study of a distilling and sale company in Busan in Korea, the new model of the reusable reverse logistics of empty bottles is built and the effectiveness of the proposed method is verified.

  16. Substantial Goodness and Nascent Human Life.

    Science.gov (United States)

    Floyd, Shawn

    2015-09-01

    Many believe that moral value is--at least to some extent--dependent on the developmental states necessary for supporting rational activity. My paper rejects this view, but does not aim simply to register objections to it. Rather, my essay aims to answer the following question: if a human being's developmental state and occurrent capacities do not bequeath moral standing, what does? The question is intended to prompt careful consideration of what makes human beings objects of moral value, dignity, or (to employ my preferred term) goodness. Not only do I think we can answer this question, I think we can show that nascent human life possesses goodness of precisely this sort. I appeal to Aquinas's metaethics to establish the conclusion that the goodness of a human being--even if that being is an embryo or fetus--resides at the substratum of her existence. If she possesses goodness, it is because human existence is good.

  17. Pharmacokinetic studies of neuromuscular blocking agents: Good Clinical Research Practice (GCRP)

    DEFF Research Database (Denmark)

    Viby-Mogensen, J.; Østergaard, D.; Donati, F.

    2000-01-01

    Good Clinical Research Practice (GCRP), neuromuscular blocking agents, pharmacokinetics, pharmacokinetic/pharmacodynamic modeling, population pharmacokinetics, statistics, study design......Good Clinical Research Practice (GCRP), neuromuscular blocking agents, pharmacokinetics, pharmacokinetic/pharmacodynamic modeling, population pharmacokinetics, statistics, study design...

  18. Optimal Provision of Public Goods

    DEFF Research Database (Denmark)

    Kreiner, Claus Thustrup; Verdelin, Nicolaj

    2012-01-01

    The standard approach to the optimal provision of public goods highlights the importance of distortionary taxation and distributional concerns. A new approach neutralizes distributional concerns by adjusting the income tax schedule. We demonstrate that both approaches are derived from the same...... basic formula. We also take the new approach further by deriving an intuitive formula for the optimal level of public goods, without imposing strong assumptions on preferences. This formula shows that distortionary taxation has a role to play, as in the standard approach. However, the main determinants...

  19. Optimal Provision of Public Goods

    DEFF Research Database (Denmark)

    Kreiner, Claus Thustrup; Verdelin, Nicolaj

    2009-01-01

    There currently exist two competing approaches in the literature on the optimal provision of public goods. The standard approach highlights the importance of distortionary taxation and distributional concerns. The new approach neutralizes distributional concerns by adjusting the non-linear income...... for the optimal level of a public good without imposing strong assumptions on preferences. This formula shows that distortionary taxation may have a role to play as in the standard approach. However, the main determinants of optimal provision are completely different and the traditional formula with its emphasis...

  20. A Monte Carlo-adjusted goodness-of-fit test for parametric models describing spatial point patterns

    KAUST Repository

    Dao, Ngocanh

    2014-04-03

    Assessing the goodness-of-fit (GOF) for intricate parametric spatial point process models is important for many application fields. When the probability density of the statistic of the GOF test is intractable, a commonly used procedure is the Monte Carlo GOF test. Additionally, if the data comprise a single dataset, a popular version of the test plugs a parameter estimate in the hypothesized parametric model to generate data for theMonte Carlo GOF test. In this case, the test is invalid because the resulting empirical level does not reach the nominal level. In this article, we propose a method consisting of nested Monte Carlo simulations which has the following advantages: the bias of the resulting empirical level of the test is eliminated, hence the empirical levels can always reach the nominal level, and information about inhomogeneity of the data can be provided.We theoretically justify our testing procedure using Taylor expansions and demonstrate that it is correctly sized through various simulation studies. In our first data application, we discover, in agreement with Illian et al., that Phlebocarya filifolia plants near Perth, Australia, can follow a homogeneous Poisson clustered process that provides insight into the propagation mechanism of these plants. In our second data application, we find, in contrast to Diggle, that a pairwise interaction model provides a good fit to the micro-anatomy data of amacrine cells designed for analyzing the developmental growth of immature retina cells in rabbits. This article has supplementary material online. © 2013 American Statistical Association, Institute of Mathematical Statistics, and Interface Foundation of North America.

  1. Adaptive evolution of cooperation through Darwinian dynamics in Public Goods games.

    Science.gov (United States)

    Deng, Kuiying; Chu, Tianguang

    2011-01-01

    The linear or threshold Public Goods game (PGG) is extensively accepted as a paradigmatic model to approach the evolution of cooperation in social dilemmas. Here we explore the significant effect of nonlinearity of the structures of public goods on the evolution of cooperation within the well-mixed population by adopting Darwinian dynamics, which simultaneously consider the evolution of populations and strategies on a continuous adaptive landscape, and extend the concept of evolutionarily stable strategy (ESS) as a coalition of strategies that is both convergent-stable and resistant to invasion. Results show (i) that in the linear PGG contributing nothing is an ESS, which contradicts experimental data, (ii) that in the threshold PGG contributing the threshold value is a fragile ESS, which cannot resist the invasion of contributing nothing, and (iii) that there exists a robust ESS of contributing more than half in the sigmoid PGG if the return rate is relatively high. This work reveals the significant effect of the nonlinearity of the structures of public goods on the evolution of cooperation, and suggests that, compared with the linear or threshold PGG, the sigmoid PGG might be a more proper model for the evolution of cooperation within the well-mixed population.

  2. Dynamics in a nonlinear Keynesian good market model

    International Nuclear Information System (INIS)

    Naimzada, Ahmad; Pireddu, Marina

    2014-01-01

    In this paper, we show how a rich variety of dynamical behaviors can emerge in the standard Keynesian income-expenditure model when a nonlinearity is introduced, both in the cases with and without endogenous government spending. A specific sigmoidal functional form is used for the adjustment mechanism of income with respect to the excess demand, in order to bound the income variation. With the aid of analytical and numerical tools, we investigate the stability conditions, bifurcations, as well as periodic and chaotic dynamics. Globally, we study multistability phenomena, i.e., the coexistence of different kinds of attractors

  3. Adaptive and bounded investment returns promote cooperation in spatial public goods games.

    Directory of Open Access Journals (Sweden)

    Xiaojie Chen

    Full Text Available The public goods game is one of the most famous models for studying the evolution of cooperation in sizable groups. The multiplication factor in this game can characterize the investment return from the public good, which may be variable depending on the interactive environment in realistic situations. Instead of using the same universal value, here we consider that the multiplication factor in each group is updated based on the differences between the local and global interactive environments in the spatial public goods game, but meanwhile limited to within a certain range. We find that the adaptive and bounded investment returns can significantly promote cooperation. In particular, full cooperation can be achieved for high feedback strength when appropriate limitation is set for the investment return. Also, we show that the fraction of cooperators in the whole population can become larger if the lower and upper limits of the multiplication factor are increased. Furthermore, in comparison to the traditionally spatial public goods game where the multiplication factor in each group is identical and fixed, we find that cooperation can be better promoted if the multiplication factor is constrained to adjust between one and the group size in our model. Our results highlight the importance of the locally adaptive and bounded investment returns for the emergence and dominance of cooperative behavior in structured populations.

  4. Goodness-of-fit tests for multi-dimensional copulas: Expanding application to historical drought data

    Directory of Open Access Journals (Sweden)

    Ming-wei Ma

    2013-01-01

    Full Text Available The question of how to choose a copula model that best fits a given dataset is a predominant limitation of the copula approach, and the present study aims to investigate the techniques of goodness-of-fit tests for multi-dimensional copulas. A goodness-of-fit test based on Rosenblatt's transformation was mathematically expanded from two dimensions to three dimensions and procedures of a bootstrap version of the test were provided. Through stochastic copula simulation, an empirical application of historical drought data at the Lintong Gauge Station shows that the goodness-of-fit tests perform well, revealing that both trivariate Gaussian and Student t copulas are acceptable for modeling the dependence structures of the observed drought duration, severity, and peak. The goodness-of-fit tests for multi-dimensional copulas can provide further support and help a lot in the potential applications of a wider range of copulas to describe the associations of correlated hydrological variables. However, for the application of copulas with the number of dimensions larger than three, more complicated computational efforts as well as exploration and parameterization of corresponding copulas are required.

  5. HOW GOOD IS GOODS AND SERVICES TAX

    OpenAIRE

    Dr. Sreemoyee Guha Roy

    2016-01-01

    Goods and Services Tax is a broad based and a single comprehensive tax levied on goods and services consumed in an economy. GST is levied at every stage of the production-distribution chain with applicable set offs in respect of the tax remitted at previous stages. It is basically a tax on final consumption. The Goods and Services Tax (GST) is a value added tax to be implemented in India, the decision on which is pending. GST is the only indirect tax that directly affects all sectors and sect...

  6. Modeling study of air pollution due to the manufacture of export goods in China's Pearl River Delta.

    Science.gov (United States)

    Streets, David G; Yu, Carolyne; Bergin, Michael H; Wang, Xuemei; Carmichael, Gregory R

    2006-04-01

    The Pearl River Delta is a major manufacturing region on the south coast of China that produces more than dollar 100 billion of goods annually for export to North America, Europe, and other parts of Asia. Considerable air pollution is caused by the manufacturing industries themselves and by the power plants, trucks, and ships that support them. We estimate that 10-40% of emissions of primary SO2, NO(x), RSP, and VOC in the region are caused by export-related activities. Using the STEM-2K1 atmospheric transport model, we estimate that these emissions contribute 5-30% of the ambient concentrations of SO2, NO(x), NO(z), and VOC in the region. One reason that the exported goods are cheap and therefore attractive to consumers in developed countries is that emission controls are lacking or of low performance. We estimate that state-of-the-art controls could be installed at an annualized cost of dollar 0.3-3 billion, representing 0.3-3% of the value of the goods produced. We conclude that mitigation measures could be adopted without seriously affecting the prices of exported goods and would achieve considerable human health and other benefits in the form of reduced air pollutant concentrations in densely populated urban areas.

  7. Framing and misperception in public good experiments

    DEFF Research Database (Denmark)

    Fosgaard, Toke Reinholt; Hansen, Lars Gårn; Wengström, Erik Roland

    2017-01-01

    Earlier studies have found that framing has substantial impact on the degree of cooperation observed in public good experiments. We show that the way the public good game is framed affects misperceptions about the incentives of the game. Moreover, we show that such framing-induced differences...... in misperceptions are linked to the framing effect on subjects' cooperation behavior. When we do not control for the different levels of misperceptions between frames, we observe a significant framing effect on subjects’ cooperation preferences. However, this framing effect becomes insignificant once we remove...

  8. The Messiness of Common Good

    DEFF Research Database (Denmark)

    Feldt, Liv Egholm

    Civil society and its philanthropic and voluntary organisations are currently experiencing public and political attention and demands to safeguard society’s ‘common good’ through social cohesion and as providers of welfare services. This has raised the question by both practitioners and researchers...... that a distinction between the non-civil and the civil is more fruitful, if we want to understand the past, present and future messiness in place in defining the common good. Based on an ethnographic case analysis of a Danish corporate foundation between 1920 and 2014 the paper shows how philanthropic gift......-giving concepts, practices and operational forms throughout history have played a significant role in defining the common good and its future avenues. Through an analytical attitude based on microhistory, conceptual history and the sociology of translation it shows that civil society’s institutional logic always...

  9. Federalism, Education-Related Public Good and Growth when Agents are Heterogeneou

    OpenAIRE

    Floriana Cerniglia; Riccarda Longaretti

    2008-01-01

    In this paper we use an endogeneous-growth model with human capital and heterogeneous agents to analyse the relationship between fiscal federalism and economic growth. Results show that federalism, which allows education-related public good levels to be tailored on the human capital of heterogeneous agents, increases human capital accumulation. This in turn leads to higher rates of growth. The benefits of federalism are stronger the larger the intra-jurisdiction variance of agents’ human capi...

  10. Corporate social investment – good business and good revenue: The case of woolworths holdings ltd South Africa

    Directory of Open Access Journals (Sweden)

    Collins C. Ngwakwe

    2014-11-01

    Full Text Available This paper examined the relationship between corporate social investment and revenue in Woolworths Holdings Limited South Africa. The approach is thus a single case study, and financial data on social investment and revenue was retrieved from the Woolworths Holdings’ Good Business Journey report 2008 -2013 and from its annual report of 2002 - 2007. Using the SPSS statistics software, a correlation was sought between the Woolworths Holdings’ social investment expenditure and revenue, earnings per share and return on equity. Findings from the analysis revealed that, within the six years of Woolworths Holdings’ Good Business Journey, a significant positive relationship exists between Woolworths Holdings’ social investment and its revenue, earnings per share (EPS and return on equity (ROE. A further analysis of difference in means using the t-test statistics indicates that the revenue streams to Woolworths Holdings’ between 2008 – 2013 is significantly greater than the revenue streams in the six years before the Good Business Journey. In conclusion, the paper suggests a new research model, referred to in this research as the share holders’ support for corporate social investment model, and it is represented as: SHSSI = f (Rv+Es+Re+Of. The paper thus offers an agenda for further research to apply the above model to evaluate the degree of shareholders’ interest and support for corporate social investment in retailing and other companies

  11. On the evaluation of cultural and environmental public goods, and its implications for social innovation.

    Science.gov (United States)

    Graffeo, Michele; Bonini, Nicolao

    2013-01-01

    Public goods (e.g., parks) and welfare services (e.g., garbage disposal and transportation policies) are extremely important for the citizens' well-being but in the complex modern societies their influence and effectiveness are affected by the citizens' support. For this reason, it is crucial to understand which are the factors that influence the citizens' perception of the benefits, costs, and risks associated to public goods and welfare services. In this chapter, we describe some psychological variables that are relevant for the evaluation process of the public goods, but that are not considered by the standard economic models. At the same time, we show that some variables of central importance for the economic models do not significantly affect the citizens' evaluations. Finally, we discuss the concept of Nudge, a policy-making approach that suggests the use of psychological mechanisms to increase the citizens' support to public provision of welfare services. Copyright © 2013 Elsevier B.V. All rights reserved.

  12. Human Commercial Models' Eye Colour Shows Negative Frequency-Dependent Selection.

    Directory of Open Access Journals (Sweden)

    Isabela Rodrigues Nogueira Forti

    Full Text Available In this study we investigated the eye colour of human commercial models registered in the UK (400 female and 400 male and Brazil (400 female and 400 male to test the hypothesis that model eye colour frequency was the result of negative frequency-dependent selection. The eye colours of the models were classified as: blue, brown or intermediate. Chi-square analyses of data for countries separated by sex showed that in the United Kingdom brown eyes and intermediate colours were significantly more frequent than expected in comparison to the general United Kingdom population (P<0.001. In Brazil, the most frequent eye colour brown was significantly less frequent than expected in comparison to the general Brazilian population. These results support the hypothesis that model eye colour is the result of negative frequency-dependent selection. This could be the result of people using eye colour as a marker of genetic diversity and finding rarer eye colours more attractive because of the potential advantage more genetically diverse offspring that could result from such a choice. Eye colour may be important because in comparison to many other physical traits (e.g., hair colour it is hard to modify, hide or disguise, and it is highly polymorphic.

  13. It’s good to do good and receive good: The impact of a ‘pay it forward’ style kindness intervention on giver and receiver well-being

    OpenAIRE

    Pressman, SD; Kraft, TL; Cross, MP

    2015-01-01

    © 2014 Taylor & Francis. Despite the popularity of the ‘pay it forward’ (PIF) concept in textbooks and popular culture, to date, no study has tested the effectiveness of a brief, one-time PIF activity on the well-being of those who do good and those who receive good. To test this, 83 undergraduates (‘givers’) performed random kind acts for 1.5 h. PIF resulted in a wide range of well-being benefits for givers (e.g. greater positive and lower negative affect), with females showing greater pos...

  14. ENVIRONMENTAL RISK ASSESSMENT OF SOME COPPER BASED FUNGICIDES ACCORDING TO THE REQUIREMENTS OF GOOD LABORATORY PRACTICE

    Directory of Open Access Journals (Sweden)

    Marga GRĂDILĂ

    2015-10-01

    Full Text Available The paper presents data demonstrating the functionality of biological systems reconstituted with aquatic organisms developed under Good Laboratory Practice testing facility within Research - Development Institute for Plant Protection Bucharest for environmental risk assessment of four fungicides based on copper, according to Good Laboratory Practice requirements. For risk assessment, according to GLP were made the following steps: Good Laboratory Practice test facility was established, we have ensured adequate space for growth, acclimatization and testing for each test species, it was installed a complex water production instalation needed to perform tests, it was achieved control system for checking environmental conditions and have developed specific operating procedures that have been accredited according to Good Laboratory Practice.The results showed that biological systems model of the Good Laboratory Practice test facility in Research - Development Institute for Plant Protection meet the requirements of Organisation for Economic Co-operation and Development Guidelines regarding GLP, and after testing copper-based fungicides in terms of acute toxicity Cyprinus carpio and to Daphnia magna revealed that three of them (copper oxychloride, copper hydroxide and copper sulphate showed ecological efficiency, ie low toxicity. Metallic copper based fungicides showed a higher toxicity, resulting in fish toxicity symptoms: sleep, sudden immersion, faded, weakness, swimming in spiral, lack of balance, breathing slow and cumbersome, spasms and mortality.

  15. Customer Satisfaction with Goods and Services Purchased on Deal Sites

    DEFF Research Database (Denmark)

    Sudzina, Frantisek; Pavlicek, Antonin

    2017-01-01

    influence whether customers are more prone to purchase problematic goods and services on deal sites, i.e. to experience problems with purchased coupons. Methodology/Approach: The research was conducted in the Czech Republic using an on-line questionnaire. Respondents were university students. Data were...... and mistrust. All these statements were measured on a Likert scale. Additional independent variables are age, and gender. In the first model, the dependent variable is if and if so, what problem the respondent experienced with purchased goods or services, such as the company did not exist, it was not possible...... cases. In the second model, the dependent variable is the percentage (predefined intervals) of problematic purchases. Ordinal logistic regression was used to test the model. In the third model, the dependent variable is if the purchased goods or services were of lower quality. Binomial logistic...

  16. The risk of bias in systematic reviews tool showed fair reliability and good construct validity.

    Science.gov (United States)

    Bühn, Stefanie; Mathes, Tim; Prengel, Peggy; Wegewitz, Uta; Ostermann, Thomas; Robens, Sibylle; Pieper, Dawid

    2017-11-01

    There is a movement from generic quality checklists toward a more domain-based approach in critical appraisal tools. This study aimed to report on a first experience with the newly developed risk of bias in systematic reviews (ROBIS) tool and compare it with A Measurement Tool to Assess Systematic Reviews (AMSTAR), that is, the most common used tool to assess methodological quality of systematic reviews while assessing validity, reliability, and applicability. Validation study with four reviewers based on 16 systematic reviews in the field of occupational health. Interrater reliability (IRR) of all four raters was highest for domain 2 (Fleiss' kappa κ = 0.56) and lowest for domain 4 (κ = 0.04). For ROBIS, median IRR was κ = 0.52 (range 0.13-0.88) for the experienced pair of raters compared to κ = 0.32 (range 0.12-0.76) for the less experienced pair of raters. The percentage of "yes" scores of each review of ROBIS ratings was strongly correlated with the AMSTAR ratings (r s  = 0.76; P = 0.01). ROBIS has fair reliability and good construct validity to assess the risk of bias in systematic reviews. More validation studies are needed to investigate reliability and applicability, in particular. Copyright © 2017 Elsevier Inc. All rights reserved.

  17. Evaluating and Optimizing Online Advertising: Forget the Click, but There Are Good Proxies.

    Science.gov (United States)

    Dalessandro, Brian; Hook, Rod; Perlich, Claudia; Provost, Foster

    2015-06-01

    Online systems promise to improve advertisement targeting via the massive and detailed data available. However, there often is too few data on exactly the outcome of interest, such as purchases, for accurate campaign evaluation and optimization (due to low conversion rates, cold start periods, lack of instrumentation of offline purchases, and long purchase cycles). This paper presents a detailed treatment of proxy modeling, which is based on the identification of a suitable alternative (proxy) target variable when data on the true objective is in short supply (or even completely nonexistent). The paper has a two-fold contribution. First, the potential of proxy modeling is demonstrated clearly, based on a massive-scale experiment across 58 real online advertising campaigns. Second, we assess the value of different specific proxies for evaluating and optimizing online display advertising, showing striking results. The results include bad news and good news. The most commonly cited and used proxy is a click on an ad. The bad news is that across a large number of campaigns, clicks are not good proxies for evaluation or for optimization: clickers do not resemble buyers. The good news is that an alternative sort of proxy performs remarkably well: observed visits to the brand's website. Specifically, predictive models built based on brand site visits-which are much more common than purchases-do a remarkably good job of predicting which browsers will make a purchase. The practical bottom line: evaluating and optimizing campaigns using clicks seems wrongheaded; however, there is an easy and attractive alternative-use a well-chosen site-visit proxy instead.

  18. Good Governance in the EU

    Directory of Open Access Journals (Sweden)

    Gina Livioara GOGA

    2009-10-01

    Full Text Available Considering the EU adhesion, good governance has been analyzed from different perspectives, in the judicial literature being an analytic model or a normative concept. Some authors have wondered if this concept is a fashion, comprising some older ideas and principles, while other authors have asserted that the reasons why different methods of governance appear in the EU are based on “the complexity and the uncertainty of the problems on the agenda, an irreducible, the new approaches on public administration and law, hidden competencies, legitimacy and subsidiarity”. At a normative level, the White Paper of European Governance consecrated five principles on which good governance is based upon: openness, participation, responsibility, efficiency and coherence.

  19. Good Looking Is Looking Good / Märt Milter

    Index Scriptorium Estoniae

    Milter, Märt

    1998-01-01

    Meloodilist drum ǹ̀bassi viljelevatest välismaa plaadifirmadest Good Looking Recordsist ja Looking Good Recordsist, mida juhib LTJ Bukem ja temaga koostööd tegevatest muusikutest Blame, Seba, Tayla, MC Conrad, Artemis

  20. Game design as marketing: How game mechanics create demand for virtual goods

    Directory of Open Access Journals (Sweden)

    Lehdonvirta, V.

    2010-01-01

    Full Text Available Selling virtual goods for real money is an increasingly popular revenue model for massively-multiplayer online games (MMOs, social networking sites (SNSs and other online hangouts. In this paper, we argue that the marketing of virtual goods currently falls short of what it could be. Game developers have long created compelling game designs, but having to market virtual goods to players is a relatively new situation to them. Professional marketers, on the other hand, tend to overlook the internal design of games and hangouts and focus on marketing the services as a whole. To begin bridging the gap, we propose that the design patterns and game mechanics commonly used in games and online hangouts should be viewed as a set of marketing techniques designed to sell virtual goods. Based on a review of a number of MMOs, we describe some of the most common patterns and game mechanics and show how their effects can be explained in terms of analogous techniques from marketing science. The results provide a new perspective to game design with interesting implications to developers. Moreover, they also suggest a radically new perspective to marketers of ordinary goods and services: viewing marketing as a form of game design.

  1. Modeling good research practices--overview: a report of the ISPOR-SMDM Modeling Good Research Practices Task Force-1.

    Science.gov (United States)

    Caro, J Jaime; Briggs, Andrew H; Siebert, Uwe; Kuntz, Karen M

    2012-01-01

    Models-mathematical frameworks that facilitate estimation of the consequences of health care decisions-have become essential tools for health technology assessment. Evolution of the methods since the first ISPOR modeling task force reported in 2003 has led to a new task force, jointly convened with the Society for Medical Decision Making, and this series of seven papers presents the updated recommendations for best practices in conceptualizing models; implementing state-transition approaches, discrete event simulations, or dynamic transmission models; dealing with uncertainty; and validating and reporting models transparently. This overview introduces the work of the task force, provides all the recommendations, and discusses some quandaries that require further elucidation. The audience for these papers includes those who build models, stakeholders who utilize their results, and, indeed, anyone concerned with the use of models to support decision making.

  2. Assessing a brand equity model for fast moving consumer goods in cosmetic and hygiene industry

    Directory of Open Access Journals (Sweden)

    Alireza Karbasivar

    2014-11-01

    Full Text Available This paper presents an empirical investigation to study the effects of ten factors on brand equity. The study provides an assessment using a brand equity model for fast moving consumer goods in cosmetic and hygiene industry. The study has accomplished among people who purchase goods in six major cities of Iran based on an adapted questionnaire originally developed by Aaker (1992a [Aaker, D. A. (1992a. The value of brand equity. Journal of Business Strategy, 13(4, 27-32.]. Cronbach alpha has been calculated as 0.88, which is well above the minimum acceptable level of 0.7. In addition, Kaiser-Meyer-Olkin Measure of Sampling adequacy and Bartlett's test of Sphericity approximation Chi-Square are 0.878, 276628 with Sig. = 0.000, respectively. The proposed study of this paper uses structural equation modeling to test different hypotheses of the survey. The Root Mean Square Error of Approximation (RMSEA, Comparative Fit Index (CFI and Chi-Square/df are 0.067, 0.840 and 4.244 and they are within desirable levels. While the effects of seven factors on brand equity have been confirmed. However, the survey does not confirm the effects of perceived value, advertisement effectiveness and advertisement to brand on brand equity. In our survey, brand loyalty maintains the highest positive impact followed by having updated brand, trust to brand, perceived quality to brand, brand awareness, intensity of supply and perception to brand.

  3. A goodness-of-fit test for occupancy models with correlated within-season revisits

    Science.gov (United States)

    Wright, Wilson; Irvine, Kathryn M.; Rodhouse, Thomas J.

    2016-01-01

    Occupancy modeling is important for exploring species distribution patterns and for conservation monitoring. Within this framework, explicit attention is given to species detection probabilities estimated from replicate surveys to sample units. A central assumption is that replicate surveys are independent Bernoulli trials, but this assumption becomes untenable when ecologists serially deploy remote cameras and acoustic recording devices over days and weeks to survey rare and elusive animals. Proposed solutions involve modifying the detection-level component of the model (e.g., first-order Markov covariate). Evaluating whether a model sufficiently accounts for correlation is imperative, but clear guidance for practitioners is lacking. Currently, an omnibus goodnessof- fit test using a chi-square discrepancy measure on unique detection histories is available for occupancy models (MacKenzie and Bailey, Journal of Agricultural, Biological, and Environmental Statistics, 9, 2004, 300; hereafter, MacKenzie– Bailey test). We propose a join count summary measure adapted from spatial statistics to directly assess correlation after fitting a model. We motivate our work with a dataset of multinight bat call recordings from a pilot study for the North American Bat Monitoring Program. We found in simulations that our join count test was more reliable than the MacKenzie–Bailey test for detecting inadequacy of a model that assumed independence, particularly when serial correlation was low to moderate. A model that included a Markov-structured detection-level covariate produced unbiased occupancy estimates except in the presence of strong serial correlation and a revisit design consisting only of temporal replicates. When applied to two common bat species, our approach illustrates that sophisticated models do not guarantee adequate fit to real data, underscoring the importance of model assessment. Our join count test provides a widely applicable goodness-of-fit test and

  4. Modeling Quantum Well Lasers

    Directory of Open Access Journals (Sweden)

    Dan Alexandru Anghel

    2012-01-01

    Full Text Available In semiconductor laser modeling, a good mathematical model gives near-reality results. Three methods of modeling solutions from the rate equations are presented and analyzed. A method based on the rate equations modeled in Simulink to describe quantum well lasers was presented. For different signal types like step function, saw tooth and sinus used as input, a good response of the used equations is obtained. Circuit model resulting from one of the rate equations models is presented and simulated in SPICE. Results show a good modeling behavior. Numerical simulation in MathCad gives satisfactory results for the study of the transitory and dynamic operation at small level of the injection current. The obtained numerical results show the specific limits of each model, according to theoretical analysis. Based on these results, software can be built that integrates circuit simulation and other modeling methods for quantum well lasers to have a tool that model and analysis these devices from all points of view.

  5. Modeling good research practices--overview: a report of the ISPOR-SMDM Modeling Good Research Practices Task Force--1.

    Science.gov (United States)

    Caro, J Jaime; Briggs, Andrew H; Siebert, Uwe; Kuntz, Karen M

    2012-01-01

    Models--mathematical frameworks that facilitate estimation of the consequences of health care decisions--have become essential tools for health technology assessment. Evolution of the methods since the first ISPOR Modeling Task Force reported in 2003 has led to a new Task Force, jointly convened with the Society for Medical Decision Making, and this series of seven articles presents the updated recommendations for best practices in conceptualizing models; implementing state-transition approaches, discrete event simulations, or dynamic transmission models; and dealing with uncertainty and validating and reporting models transparently. This overview article introduces the work of the Task Force, provides all the recommendations, and discusses some quandaries that require further elucidation. The audience for these articles includes those who build models, stakeholders who utilize their results, and, indeed, anyone concerned with the use of models to support decision making. Copyright © 2012 International Society for Pharmacoeconomics and Outcomes Research (ISPOR). Published by Elsevier Inc. All rights reserved.

  6. 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.

  7. Model of the synthesis of trisporic acid in Mucorales showing bistability.

    Science.gov (United States)

    Werner, S; Schroeter, A; Schimek, C; Vlaic, S; Wöstemeyer, J; Schuster, S

    2012-12-01

    An important substance in the signalling between individuals of Mucor-like fungi is trisporic acid (TA). This compound, together with some of its precursors, serves as a pheromone in mating between (+)- and (-)-mating types. Moreover, intermediates of the TA pathway are exchanged between the two mating partners. Based on differential equations, mathematical models of the synthesis pathways of TA in the two mating types of an idealised Mucor-fungus are here presented. These models include the positive feedback of TA on its own synthesis. The authors compare three sub-models in view of bistability, robustness and the reversibility of transitions. The proposed modelling study showed that, in a system where intermediates are exchanged, a reversible transition between the two stable steady states occurs, whereas an exchange of the end product leads to an irreversible transition. The reversible transition is physiologically favoured, because the high-production state of TA must come to an end eventually. Moreover, the exchange of intermediates and TA is compared with the 3-way handshake widely used by computers linked in a network.

  8. Good mentors and role models

    Indian Academy of Sciences (India)

    Lawrence

    Today, as a teacher and researcher, I look forward to my day ... essential for women, and that it would prove to be more valuable ... mentors, who have been my role models. ... benefit to make the workplace gender friendly by including more.

  9. Bioenergy good practice

    Energy Technology Data Exchange (ETDEWEB)

    Birse, J.; Chambers, K.

    2000-07-01

    This report gives details of a project to make the Good Practice Guidelines, which were developed to help the UK Bioenergy industry, the national and local governments, and the public, more widely available. Details concerning the designing of a Good Practice Programme, and the proposed codes of Good Practice programme are given, and general relevant good practice guidance documents are discussed. The stakeholder survey and workshop, and the proposed codes of a Good Practice Programme are presented in Annexes. (UK)

  10. The ethics of big data as a public good: which public? Whose good?

    Science.gov (United States)

    Taylor, Linnet

    2016-12-28

    International development and humanitarian organizations are increasingly calling for digital data to be treated as a public good because of its value in supplementing scarce national statistics and informing interventions, including in emergencies. In response to this claim, a 'responsible data' movement has evolved to discuss guidelines and frameworks that will establish ethical principles for data sharing. However, this movement is not gaining traction with those who hold the highest-value data, particularly mobile network operators who are proving reluctant to make data collected in low- and middle-income countries accessible through intermediaries. This paper evaluates how the argument for 'data as a public good' fits with the corporate reality of big data, exploring existing models for data sharing. I draw on the idea of corporate data as an ecosystem involving often conflicting rights, duties and claims, in comparison to the utilitarian claim that data's humanitarian value makes it imperative to share them. I assess the power dynamics implied by the idea of data as a public good, and how differing incentives lead actors to adopt particular ethical positions with regard to the use of data.This article is part of the themed issue 'The ethical impact of data science'. © 2016 The Author(s).

  11. Dynamic Investment Behavior Taking into Account Ageing of the Capital Good

    NARCIS (Netherlands)

    Feichtinger, G.; Hartl, R.F.; Kort, P.M.; Veliov, V.

    2001-01-01

    In standard capital accumulation models all capital goods are equally productive and produce goods of the same quality.However, due to ageing, in reality it holds most of the time that newer capital goods are more productive. Implications of this feature for the firm's investment policies are

  12. Nudge for (the public) good

    DEFF Research Database (Denmark)

    Fosgaard, Toke Reinholt; Piovesan, Marco

    In this paper we test the effect of non-binding defaults on the level of contribution to a public good. We manipulate the default numbers appearing on the decision screen to nudge subjects toward a free-rider strategy or a perfect conditional cooperator strategy. Our results show that the vast...

  13. Nudge for (the public) good

    DEFF Research Database (Denmark)

    Fosgaard, Toke Reinholt; Piovesan, Marco

    2015-01-01

    In this paper we test the effect of non-binding defaults on the level of contribution to a public good. We manipulate the default numbers appearing on the decision screen to nudge subjects toward a free-rider strategy or a perfect conditional cooperator strategy. Our results show that the vast...

  14. GOODS AND SERVICE TAX ONE NATION ONE TAX IN INDIA.

    OpenAIRE

    Shuchi Sharma; Rupendra Prakash Yadav.

    2018-01-01

    Goods and Service Tax is a significant and logical step towards a comprehensive Indirect tax reform in India. This paper analyses the concept of Goods Service Tax and further discusses their impact on the various sectors in India. Brief description is given on Goods Service Tax background and Goods and Service Tax models helps to reduce tax burden. It aims at creating a single and unified market benefiting both corporate and economy because this is the only Indirect tax that directly affects ...

  15. Bioavailability of particulate metal to zebra mussels: Biodynamic modelling shows that assimilation efficiencies are site-specific

    Energy Technology Data Exchange (ETDEWEB)

    Bourgeault, Adeline, E-mail: bourgeault@ensil.unilim.fr [Cemagref, Unite de Recherche Hydrosystemes et Bioprocedes, 1 rue Pierre-Gilles de Gennes, 92761 Antony (France); FIRE, FR-3020, 4 place Jussieu, 75005 Paris (France); Gourlay-France, Catherine, E-mail: catherine.gourlay@cemagref.fr [Cemagref, Unite de Recherche Hydrosystemes et Bioprocedes, 1 rue Pierre-Gilles de Gennes, 92761 Antony (France); FIRE, FR-3020, 4 place Jussieu, 75005 Paris (France); Priadi, Cindy, E-mail: cindy.priadi@eng.ui.ac.id [LSCE/IPSL CEA-CNRS-UVSQ, Avenue de la Terrasse, 91198 Gif-sur-Yvette (France); Ayrault, Sophie, E-mail: Sophie.Ayrault@lsce.ipsl.fr [LSCE/IPSL CEA-CNRS-UVSQ, Avenue de la Terrasse, 91198 Gif-sur-Yvette (France); Tusseau-Vuillemin, Marie-Helene, E-mail: Marie-helene.tusseau@ifremer.fr [IFREMER Technopolis 40, 155 rue Jean-Jacques Rousseau, 92138 Issy-Les-Moulineaux (France)

    2011-12-15

    This study investigates the ability of the biodynamic model to predict the trophic bioaccumulation of cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni) and zinc (Zn) in a freshwater bivalve. Zebra mussels were transplanted to three sites along the Seine River (France) and collected monthly for 11 months. Measurements of the metal body burdens in mussels were compared with the predictions from the biodynamic model. The exchangeable fraction of metal particles did not account for the bioavailability of particulate metals, since it did not capture the differences between sites. The assimilation efficiency (AE) parameter is necessary to take into account biotic factors influencing particulate metal bioavailability. The biodynamic model, applied with AEs from the literature, overestimated the measured concentrations in zebra mussels, the extent of overestimation being site-specific. Therefore, an original methodology was proposed for in situ AE measurements for each site and metal. - Highlights: > Exchangeable fraction of metal particles did not account for the bioavailability of particulate metals. > Need for site-specific biodynamic parameters. > Field-determined AE provide a good fit between the biodynamic model predictions and bioaccumulation measurements. - The interpretation of metal bioaccumulation in transplanted zebra mussels with biodynamic modelling highlights the need for site-specific assimilation efficiencies of particulate metals.

  16. Trade potential of climate smart goods of Vietnam: An application of gravity model

    Directory of Open Access Journals (Sweden)

    Trung Van Vu

    2016-01-01

    Full Text Available This paper examines the trade potential of climate smart goods (CSG of Vietnam. In particular, the study employs gravity model with panel data for bilateral trade between Vietnam and its 45 partners from 2002 to 2013 with an objective of identifying the determinants explaining Vietnam's trade of climate smart products. The estimation results reveal that economic size, market size, distance, real exchange rate, border, and the quality of infrastructure of both Vietnam and its trading partners play a major role in bilateral trade of CSG. Additionally, the paper applies the method using speed of convergence and the estimated gravity equation to answer whether Vietnam has fully realized the potential trade of CSG. Accordingly, Vietnam has strong opportunity for trade expansion with 19 out of 45 countries in the scope of this paper.

  17. PUBLIC GOODS, CORRUPTION AND GROWTH???

    OpenAIRE

    Ratbek Dzhumashev

    2006-01-01

    In this paper, we analyse implications of corruption on growth. We extend existing growth models by incorporating ubiquitous corruption as a by-product of the public sector. Corruption affects both taxation and public good provision, and therefore causes income redistribution and inefficiencies in the public sector. These effects of corruption lead to lower growth through distortions of investment incentives and resources allocation.

  18. Good practices in health care "management experimentation models": insights from an international public-private partnership on transplantation and advanced specialized therapies.

    Science.gov (United States)

    Longo, Maria Cristina

    2015-01-01

    The research analyzes good practices in health care "management experimentation models," which fall within the broader range of the integrative public-private partnerships (PPPs). Introduced by the Italian National Healthcare System in 1991, the "management experimentation models" are based on a public governance system mixed with a private management approach, a patient-centric orientation, a shared financial risk, and payment mechanisms correlated with clinical outcomes, quality, and cost-savings. This model makes public hospitals more competitive and efficient without affecting the principles of universal coverage, solidarity, and equity of access, but requires higher financial responsibility for managers and more flexibility in operations. In Italy the experience of such experimental models is limited but successful. The study adopts the case study methodology and refers to the international collaboration started in 1997 between two Italian hospitals and the University of Pittsburgh Medical Center (UPMC - Pennsylvania, USA) in the field of organ transplants and biomedical advanced therapies. The research allows identifying what constitutes good management practices and factors associated with higher clinical performance. Thus, it allows to understand whether and how the management experimentation model can be implemented on a broader basis, both nationwide and internationally. However, the implementation of integrative PPPs requires strategic, cultural, and managerial changes in the way in which a hospital operates; these transformations are not always sustainable. The recognition of ISMETT's good management practices is useful for competitive benchmarking among hospitals specialized in organ transplants and for its insights on the strategies concerning the governance reorganization in the hospital setting. Findings can be used in the future for analyzing the cross-country differences in productivity among well-managed public hospitals.

  19. Buying stolen goods: the ambiguity in trading consumer-to-consumer

    DEFF Research Database (Denmark)

    Kammersgaard, Tobias; Heinskou, Marie Bruvik; Demant, Jakob

    2017-01-01

    This study investigates the buying of stolen goods in Denmark. The study consists of a self-report survey based on a representative sample of the general Danish population (n = 2311) and six focus group interviews consisting of both informants experienced with buying stolen goods and of those...... with no experience (n = 37). The survey showed that 4.8% had bought stolen goods, while 15.7% were uncertain whether they had bought stolen goods. Young people, males, and unemployed were more likely to purchase stolen goods. No clear correlation between income and buying stolen goods was found. Focus groups suggest...... the buyers of stolen goods did not buy stolen goods because they could not afford legitimate products. We recommend targeting consumers not interested in buying stolen goods with information about how to avoid such activity....

  20. The role of forgetting in undermining good intentions.

    Directory of Open Access Journals (Sweden)

    Kristina R Olson

    Full Text Available Evaluating others is a fundamental feature of human social interaction--we like those who help more than those who hinder. In the present research, we examined social evaluation of those who not only intentionally performed good and bad actions but also those to whom good things have happened (the lucky and those to whom bad things have happened (the unlucky. In Experiment 1a, subjects demonstrated a sympathetic preference for the unlucky. However, under cognitive load (Experiment 1b, no such preference was expressed. Further, in Experiments 2a and 2b, when a time delay between impression formation (learning and evaluation (memory test was introduced, results showed that younger (Experiment 2a and older adults (Experiment 2b showed a significant preference for the lucky. Together these experiments show that a consciously motivated sympathetic preference for those who are unlucky dissolves when memory is disrupted. The observed dissociation provides evidence for the presence of conscious good intentions (favoring the unlucky and the cognitive compromising of such intentions when memory fails.

  1. In-Kind Export Subsidies for Processed and Bulk Goods

    OpenAIRE

    Philip L. Paarlberg

    1996-01-01

    This research analyzes the interaction between a bulk commodity and a processed good under in-kind export subsidies. An in-kind export subsidy lowers the export price of the good on which it is paid. The other price changes are ambiguous. A numerical model for U.S. wheat and flour illustrates these conditions. Given the parameters of the model, an in-kind payment using wheat lowers flour prices and the export price of wheat. The U.S. domestic wheat price rises. When flour is used for the paym...

  2. Pedagogical Uses of the Public Goods Concept in Economics.

    Science.gov (United States)

    Kiesling, Herbert J.

    1990-01-01

    Describes some of the relatively unknown aspects of the concept of public goods and shows how they might be brought into undergraduate textbooks in microeconomic principles, public finance, and welfare economics. Illustrates how these aspects of public goods can be brought into undergraduate instruction. (DB)

  3. Meet the good child

    DEFF Research Database (Denmark)

    Gram, Malene; Grønhøj, Alice

    2016-01-01

    This article explores ‘childing’ pratices in relation to family supermarket shopping in Denmark. ‘Parenting’ practices have been explored for long but little attention has been given to how children strive to be ‘good’ children, who live up to certain standards and recognize what they perceive...... to be appropriate child and parental behavior. The study takes a practice theoretical perspective, building on previous research on family consumption, and draws empirically on 35 interviews with 5–6 year-olds and 13 family interviews. Findings show that the children recognize the position of ‘the good child......’ and most often prefer to take on this position, which is confirmed by their parents. The children can describe how ‘the good child’—in their eyes—should behave. They prefer consensus and not being embarrassing or embarrassed. The study concludes that the children are strongly immersed in social norms...

  4. Conservation of filtering in manufacturing systems with unreliable machines and finished goods buffers

    Directory of Open Access Journals (Sweden)

    2006-01-01

    Full Text Available This paper addresses the issue of reliable satisfaction of customer demand by unreliable production systems. In the framework of a simple production-storage-customer model, we show that this can be accomplished by using an appropriate level of filtering of production randomness. The filtering is ensured by finished goods buffers (filtering in space and shipping periods (filtering in time. The following question is considered: how are filtering in space and filtering in time interrelated? As an answer, we show that there exists a conservation law: in lean manufacturing systems, the amount of filtering in space multiplied by the amount of filteringin time (both measured in appropriate dimensionless units ispractically constant. Along with providing an insight into the nature of manufacturing systems, this law offers a tool for selecting the smallest, that is, lean, finished goods buffering, which is necessary and sufficient to ensure the desired level ofcustomer demand satisfaction.

  5. Good and bad practices in pv plants

    OpenAIRE

    Martinez Moreno, Francisco; Helleputte, F.; Tyutyundzhiev, N.; Rabal Echeverria, Daniel; Conlon, Michael; Fartaria, Tomás; Oteiza, David

    2013-01-01

    The PVCROPS project (PhotoVolta ic Cost r€duction, Reliability, Operational performance, Prediction and Simulation), cofinanced by European Commission in the frame of Seventh Framework Programme, has compiled in the “Good and bad practices: Manual to improve the quality and reduce the cost of PV systems” a collection of good and bad practices in actual PV plants . All the situations it collects represent the state-of-the-art of existing PV installations all around Europe. They show how ...

  6. Software licenses: Good fences make good neighbors

    International Nuclear Information System (INIS)

    McCreary, J.G.; Woodyard, A.

    1995-01-01

    The basis for a good contract is that it is beneficial to both parties. A good foundation will cement the responsibilities and obligations of the parties after areas of agreement have been negotiated. Unfortunately, software licenses do not always reflect what is best for all. Some clauses are definitely for the benefit of the vendor, while others are required by a prudent client. The resulting contract is then a matter of reasonable compromise to achieve a good business relationship. Major issues of warranty, liability, training, support, and payment may be in conflict. Such topics as maintenance, testing, patents, extent of use, and return of software are often overlooked or addressed unevenly. This paper addresses these subjects and provides guidelines for software licenses. An understanding of legal phrases is of value. A better understanding of the viewpoints of both the vendor and the client results in a better working relationship

  7. The flow of goods model of the Rotterdam Port Authority; Het goederenstromenmodel voor de Rotterdamse haven. De verhouding tussen fysieke stromen en economische grootheden

    Energy Technology Data Exchange (ETDEWEB)

    Saitua, R. [Haveninnovatie van het Gemeentelijk Havenbedrijf, Rotterdam (Netherlands)

    1995-12-01

    Long term forecasts of the flow of goods through the Port of Rotterdam are essential for port development aims and to quantify the environmental effects of the generated traffic. Experience of the Rotterdam Port Authority shows that the differences between forecasts and realization can be explained by radical changes in the trends as a consequence of technological and social developments. In the `Flow of goods model number 6` scenario, techniques have been used to asses the fundamental uncertainty of the future, as well as a combination of quantitative and qualitative methods (for example expert judgements). Much attention has been given to the so called `dematerialization` trend, which means less use of primary commodities by production unit. Problems that have to be tackled within a more appropriate way are: (1) expected less growth of the trade measured in weight than the trade measured in monetary units; and (2) the influence of geographical patterns of production (lean production with global sourcing versus more local diffused production) on trade and transport flows. 2 tabs., 9 refs.

  8. Switch for Good Community Program

    Energy Technology Data Exchange (ETDEWEB)

    Crawford, Tabitha [Balfour Beatty Military Housing Management LLC, Newtown Square, PA (United States); Amran, Martha [WattzOn, Inc., Mountain View, CA (United States)

    2013-11-19

    Switch4Good is an energy-savings program that helps residents reduce consumption from behavior changes; it was co-developed by Balfour Beatty Military Housing Management (BB) and WattzOn in Phase I of this grant. The program was offered at 11 Navy bases. Three customer engagement strategies were evaluated, and it was found that Digital Nudges (a combination of monthly consumption statements with frequent messaging via text or email) was most cost-effective. The program was delivered on-time and on-budget, and its success is based on the teamwork of local BB staff and the WattzOn team. The following graphic shows Switch4Good “by the numbers”, e.g. the scale of operations achieved during Phase I.

  9. Depreciation of public goods in spatial public goods games

    Science.gov (United States)

    Shi, Dong-Mei; Zhuang, Yong; Li, Yu-Jian; Wang, Bing-Hong

    2011-10-01

    In real situations, the value of public goods will be reduced or even lost because of external factors or for intrinsic reasons. In this work, we investigate the evolution of cooperation by considering the effect of depreciation of public goods in spatial public goods games on a square lattice. It is assumed that each individual gains full advantage if the number of the cooperators nc within a group centered on that individual equals or exceeds the critical mass (CM). Otherwise, there is depreciation of the public goods, which is realized by rescaling the multiplication factor r to (nc/CM)r. It is shown that the emergence of cooperation is remarkably promoted for CM > 1 even at small values of r, and a global cooperative level is achieved at an intermediate value of CM = 4 at a small r. We further study the effect of depreciation of public goods on different topologies of a regular lattice, and find that the system always reaches global cooperation at a moderate value of CM = G - 1 regardless of whether or not there exist overlapping triangle structures on the regular lattice, where G is the group size of the associated regular lattice.

  10. Explaining contributions to public goods : Formalizing the social exchange heuristic

    NARCIS (Netherlands)

    Dijkstra, J.

    The public good game is a popular model of cooperation problems. Rational egoism predicts that in finitely repeated public good games no contributions are made. At least 4 observations are inconsistent with this prediction: contributions (i) are frequently positive, (ii) increase in the marginal

  11. Multiple scales in metapopulations of public goods producers

    Science.gov (United States)

    Bauer, Marianne; Frey, Erwin

    2018-04-01

    Multiple scales in metapopulations can give rise to paradoxical behavior: in a conceptual model for a public goods game, the species associated with a fitness cost due to the public good production can be stabilized in the well-mixed limit due to the mere existence of these scales. The scales in this model involve a length scale corresponding to separate patches, coupled by mobility, and separate time scales for reproduction and interaction with a local environment. Contrary to the well-mixed high mobility limit, we find that for low mobilities, the interaction rate progressively stabilizes this species due to stochastic effects, and that the formation of spatial patterns is not crucial for this stabilization.

  12. International Good Market Segmentation and Financial Market Structure

    OpenAIRE

    Basak, Suleyman; Croitoru, Benjamin

    2003-01-01

    While financial markets have recently become more complete and international capital flows well liberalized, markets for goods remain segmented. To investigate how more complete security markets may relieve the effects of this segmentation, we examine a series of two-country economies with internationally segmented good markets, distinguished by the available financial securities. We show that, under heterogeneity within countries, the financial structure matters: even with internationally co...

  13. Pigeons can discriminate "good" and "bad" paintings by children.

    Science.gov (United States)

    Watanabe, Shigeru

    2010-01-01

    Humans have the unique ability to create art, but non-human animals may be able to discriminate "good" art from "bad" art. In this study, I investigated whether pigeons could be trained to discriminate between paintings that had been judged by humans as either "bad" or "good". To do this, adult human observers first classified several children's paintings as either "good" (beautiful) or "bad" (ugly). Using operant conditioning procedures, pigeons were then reinforced for pecking at "good" paintings. After the pigeons learned the discrimination task, they were presented with novel pictures of both "good" and "bad" children's paintings to test whether they had successfully learned to discriminate between these two stimulus categories. The results showed that pigeons could discriminate novel "good" and "bad" paintings. Then, to determine which cues the subjects used for the discrimination, I conducted tests of the stimuli when the paintings were of reduced size or grayscale. In addition, I tested their ability to discriminate when the painting stimuli were mosaic and partial occluded. The pigeons maintained discrimination performance when the paintings were reduced in size. However, discrimination performance decreased when stimuli were presented as grayscale images or when a mosaic effect was applied to the original stimuli in order to disrupt spatial frequency. Thus, the pigeons used both color and pattern cues for their discrimination. The partial occlusion did not disrupt the discriminative behavior suggesting that the pigeons did not attend to particular parts, namely upper, lower, left or right half, of the paintings. These results suggest that the pigeons are capable of learning the concept of a stimulus class that humans name "good" pictures. The second experiment showed that pigeons learned to discriminate watercolor paintings from pastel paintings. The subjects showed generalization to novel paintings. Then, as the first experiment, size reduction test

  14. Virtual goods recommendations in virtual worlds.

    Science.gov (United States)

    Chen, Kuan-Yu; Liao, Hsiu-Yu; Chen, Jyun-Hung; Liu, Duen-Ren

    2015-01-01

    Virtual worlds (VWs) are computer-simulated environments which allow users to create their own virtual character as an avatar. With the rapidly growing user volume in VWs, platform providers launch virtual goods in haste and stampede users to increase sales revenue. However, the rapidity of development incurs virtual unrelated items which will be difficult to remarket. It not only wastes virtual global companies' intelligence resources, but also makes it difficult for users to find suitable virtual goods fit for their virtual home in daily virtual life. In the VWs, users decorate their houses, visit others' homes, create families, host parties, and so forth. Users establish their social life circles through these activities. This research proposes a novel virtual goods recommendation method based on these social interactions. The contact strength and contact influence result from interactions with social neighbors and influence users' buying intention. Our research highlights the importance of social interactions in virtual goods recommendation. The experiment's data were retrieved from an online VW platform, and the results show that the proposed method, considering social interactions and social life circle, has better performance than existing recommendation methods.

  15. Different goods, different effects: Exploring the roles of generalized trust in public goods provision

    DEFF Research Database (Denmark)

    Sønderskov, Kim

    -product situation (whether to buy organic food or not). This design provides a possibility to detect whether any effect of generalized trust is due to strategic behavior or due to altruistic motives among trusters. The results show that generalized trust enhances recycling significantly whereas it only has a very......This paper tests the hypothesis that generalized trust helps solve large-n collective action problems in a rationalistic framework. A rigors test is employed in that the hypothesis is tested in two different choice situations; a pure public good situation (whether to recycle or not) and a joint...... week positive effect on organic food consumption. Hence, generalized trust only affects public good provision when a collective action problem is present. The analyses thus sustain the hypothesis. It is furthermore concluded that the effect of generalized trust is due to strategic behavior...

  16. Good government and good governance: record keeping in a ...

    African Journals Online (AJOL)

    This article addresses the challenges that arise when record keeping systems are advocated as a necessary under-pinning for good government and good governance. The relationship between record keeping and accountability is analysed and contextualised in relation to transparency and Freedom of Information ...

  17. Good Enough to Teach?

    DEFF Research Database (Denmark)

    Denver, Louise; Jensen, Christian; Mees, Inger

    2016-01-01

    to improve their communicative effectiveness. The feedback was given by experienced tutors of English who had extensive experience of teaching and assessing English in an everyday ELF context. This paper sets out to investigate what sort of recommendations were provided, concentrating on the 24 lecturers...... whose L1 was Danish. An examination of the tutors’ comments showed that they could be divided into two main categories: formal language skills and pragmatic or metadiscursive features. The observations on language features are presented using a slightly adapted version of Lavelle’s (2008) “good......; Jenkins et al. 2011: 301), the analyses of the tutors’ comments to the 24 lecturers in the present study show that both aspects should be attributed importance....

  18. Depreciation of public goods in spatial public goods games

    International Nuclear Information System (INIS)

    Shi, Dong-Mei; Zhuang, Yong; Li, Yu-Jian; Wang, Bing-Hong

    2011-01-01

    In real situations, the value of public goods will be reduced or even lost because of external factors or for intrinsic reasons. In this work, we investigate the evolution of cooperation by considering the effect of depreciation of public goods in spatial public goods games on a square lattice. It is assumed that each individual gains full advantage if the number of the cooperators n c within a group centered on that individual equals or exceeds the critical mass (CM). Otherwise, there is depreciation of the public goods, which is realized by rescaling the multiplication factor r to (n c /CM)r. It is shown that the emergence of cooperation is remarkably promoted for CM > 1 even at small values of r, and a global cooperative level is achieved at an intermediate value of CM = 4 at a small r. We further study the effect of depreciation of public goods on different topologies of a regular lattice, and find that the system always reaches global cooperation at a moderate value of CM = G − 1 regardless of whether or not there exist overlapping triangle structures on the regular lattice, where G is the group size of the associated regular lattice

  19. International business cycles and the relative price of investment goods

    OpenAIRE

    Parantap Basu; Christoph Thoenissen

    2009-01-01

    Is the relative price of investment goods a good proxy for investment frictions? We model this relative price in a flexible price international economy with two fundamental shocks, namely the total factor productivity (TFP) shock and the investment specific technology (IST) shock. The paper argues that the one-to-one correspondence between investment friction and the relative price of investment goods breaks down in an international economy because of the short run correlation between the ter...

  20. Work, Health, Music: The enduring Rusyn model of a good life amid changing socioeconomic contexts of progress

    Directory of Open Access Journals (Sweden)

    K. M. Cantin

    2013-11-01

    Full Text Available Rusyns in Eastern and Central Europe have experience with two predominant models of “progress”: the Soviet-style communist and the neoliberal.  Proponents of each system promised to better the lives of all but did not take into account what “better” meant to local populations, including Rusyns.  Increasingly, European governmental and nongovernmental organizations are redefining notions of progress and development to accord with values of sustainability and a capability approach (CA to well-being.  Giovanola (2005 and Robeyns (2005 have argued that scholars of the CA need to better develop concepts of “personhood” and “human flourishing”, and to better explain the importance of social group membership and norms to living a valued life.  The emerging anthropological focus on well-being, emphasizing culturally specific definitions of what happiness and a good life mean, can provide these conceptualizations.  As a case in point, I use freelist and interview data obtained from residents in the Prešov Region of Slovakia and the Zakarpattia Oblast of Ukraine along with Rusyn cultural narratives drawn from poems, folktales, plays, songs, interviews, and speeches to identify prevalent models of “personhood” and “a good life”. I discuss how these narratives intersect and diverge with discourses of happiness and progress along with the implications for Rusyns' ability to flourish. 

  1. "Good mothering" or "good citizenship"?

    Science.gov (United States)

    Porter, Maree; Kerridge, Ian H; Jordens, Christopher F C

    2012-03-01

    Umbilical cord blood banking is one of many biomedical innovations that confront pregnant women with new choices about what they should do to secure their own and their child's best interests. Many mothers can now choose to donate their baby's umbilical cord blood (UCB) to a public cord blood bank or pay to store it in a private cord blood bank. Donation to a public bank is widely regarded as an altruistic act of civic responsibility. Paying to store UCB may be regarded as a "unique opportunity" to provide "insurance" for the child's future. This paper reports findings from a survey of Australian women that investigated the decision to either donate or store UCB. We conclude that mothers are faced with competing discourses that force them to choose between being a "good mother" and fulfilling their role as a "good citizen." We discuss this finding with reference to the concept of value pluralism.

  2. What is a "good enough" termination?

    Science.gov (United States)

    Gabbard, Glen O

    2009-06-01

    In Freud's technique papers, he failed to develop a systematic approach to termination. Much of the existing literature is based on psychoanalytic mythologies about the way patients are expected to end analysis. The models described in the literature are often starkly at odds with what one sees in clinical practice. A wish for idealized versions of termination underlies much of what has been written, and we need to shift to a conceptual model involving "good enough" termination. A number of different endings to psychoanalysis may, in the long run, lead to productive outcomes; these models are examined, as are various approaches to the dilemmas presented at the time of termination.

  3. Land use, worker heterogeneity and welfare benefits of public goods

    NARCIS (Netherlands)

    Teulings, Coen N.; Ossokina, Ioulia V.; de Groot, Henri L.F.

    2018-01-01

    We show that investments in public goods change the optimal land use in their vicinity, leading to additional welfare benefits. This occurs through two sorting mechanisms. First, availability of public goods leads to higher population densities. Second, population groups sort according to their

  4. Piracy prevention and the pricing of information goods

    OpenAIRE

    Cremer, Helmuth; Pestieau, Pierre

    2006-01-01

    This paper develops a simple model of piracy to analyze its effects on prices and welfare and to study the optimal enforcement policy. A monopolist produces an information good (involving a 'large' development cost and a 'small' reproduction cost) that is sold to two groups of consumers differing in their valuation of the good. We distinguish two settings: one in which the monopoly is regulated and one in which it maximizes profits and is not regulated, except that the public authority may be...

  5. Cooperation and the common good.

    Science.gov (United States)

    Johnstone, Rufus A; Rodrigues, António M M

    2016-02-05

    In this paper, we draw the attention of biologists to a result from the economic literature, which suggests that when individuals are engaged in a communal activity of benefit to all, selection may favour cooperative sharing of resources even among non-relatives. Provided that group members all invest some resources in the public good, they should refrain from conflict over the division of these resources. The reason is that, given diminishing returns on investment in public and private goods, claiming (or ceding) a greater share of total resources only leads to the actor (or its competitors) investing more in the public good, such that the marginal costs and benefits of investment remain in balance. This cancels out any individual benefits of resource competition. We illustrate how this idea may be applied in the context of biparental care, using a sequential game in which parents first compete with one another over resources, and then choose how to allocate the resources they each obtain to care of their joint young (public good) versus their own survival and future reproductive success (private good). We show that when the two parents both invest in care to some extent, they should refrain from any conflict over the division of resources. The same effect can also support asymmetric outcomes in which one parent competes for resources and invests in care, whereas the other does not invest but refrains from competition. The fact that the caring parent gains higher fitness pay-offs at these equilibria suggests that abandoning a partner is not always to the latter's detriment, when the potential for resource competition is taken into account, but may instead be of benefit to the 'abandoned' mate. © 2016 The Author(s).

  6. Goodness-of-fit tests with dependent observations

    International Nuclear Information System (INIS)

    Chicheportiche, Rémy; Bouchaud, Jean-Philippe

    2011-01-01

    We revisit the Kolmogorov–Smirnov and Cramér–von Mises goodness-of-fit (GoF) tests and propose a generalization to identically distributed, but dependent univariate random variables. We show that the dependence leads to a reduction of the 'effective' number of independent observations. The generalized GoF tests are not distribution-free but rather depend on all the lagged bivariate copulas. These objects, that we call 'self-copulas', encode all the non-linear temporal dependences. We introduce a specific, log-normal model for these self-copulas, for which a number of analytical results are derived. An application to financial time series is provided. As is well known, the dependence is to be long-ranged in this case, a finding that we confirm using self-copulas. As a consequence, the acceptance rates for GoF tests are substantially higher than if the returns were iid random variables

  7. Irradiation of goods

    International Nuclear Information System (INIS)

    Lunt, R.E.

    1987-01-01

    Mechanical handling apparatus is adapted to handle goods, such as boxed fruit, during a process of irradiation, in palletized form. Palletized goods are loaded onto wheeled vehicles in a loading zone. Four vehicles are wheeled on a track into an irradiation zone via a door in a concrete shield. The vehicles are arranged in orthogonal relationship around a source of square section. Turntables are positioned at corners of the square shaped rail truck around the source selectively to turn the vehicles to align then with track sections. Mechanical manipulating devices are positioned in the track sections opposed to sides of the source. During irradiation, the vehicles and their palletized goods are cylically moved toward the source to offer first sides of the goods for irradiation and are retraced from the source and are pivoted through 90 0 to persent succeeding sides of the goods for irradiation

  8. What Goods Do Countries Trade? New Ricardian Predictions

    OpenAIRE

    Arnaud Costinot; Ivana Komunjer

    2007-01-01

    Though one of the pillars of the theory of international trade, the extreme predictions of the Ricardian model have made it unsuitable for empirical purposes. A seminal contribution of Eaton and Kortum (2002) is to demonstrate the stochastic productivity differences at the firm-level are sufficient to make the Ricardian model empirically relevant. While successful at explaining trade volumes, their model remains silent with regards to one important question: What goods do countries trade? ...

  9. What Good Do Countries Trade? New Ricardian Predictions

    OpenAIRE

    Costinot, Arnaud; Komunjer, Ivana

    2006-01-01

    Though one of the pillars of the theory of international trade, the extreme predictions of the Ricardian model have made it unsuitable for empirical purposes. A seminal contribution of Eaton and Kortum (2002) is to demonstrate that random productivity shocks are sufficient to make the Ricardian model empirically relevant. While successful at explaining trade volumes, their model remains silent with regards to one important questions: What goods to countries trade? Our main contribution is...

  10. Piling up technology of goods irradiated by single plate source

    International Nuclear Information System (INIS)

    Xia Hezhou; Chen Yuxia; Cao Hongyun; Lin Yong; Zhou guoquan

    1999-01-01

    In the irradiation process of piling up goods in static state, four irradiation working sites and single plate source was adopted. The results showed that piling up in this way remarkably raised the irradiation quality of goods. The utilization rate of radioactive ray reached 22.27%

  11. Life cycle assessment of capital goods in waste management systems

    DEFF Research Database (Denmark)

    Brogaard, Line Kai-Sørensen; Christensen, Thomas Højlund

    2016-01-01

    plant, an incinerator and a landfill site. The contribution of capital goods to the overall environmental aspects of managing the waste was significant but varied greatly depending on the technology and the impact category: Global Warming: 1-17%, Stratospheric Ozone Depletion: 2-90%, Ionising Radiation......The environmental importance of capital goods (trucks, buildings, equipment, etc.) was quantified by LCA modelling 1 tonne of waste treated in five different waste management scenarios. The scenarios involved a 240L collection bin, a 16m3 collection truck, a composting plant, an anaerobic digestion...... for treatment facilities than for the collection and transportation of waste and for the landfilling of waste. It is concluded that the environmental impacts of capital goods should always be included in the LCA modelling of waste management, unless the only impact category considered is Global Warming....

  12. LHC Report: machine commissioning - looking good

    CERN Document Server

    CERN Bulletin

    2016-01-01

    Since first beam was injected on Friday, 25 March, the recommissioning of the LHC has made good progress.   An event display showing the first collisions after the 2015 year-end technical stop as seen by the CMS experiment. At present, work is being performed with either probe bunches (around 1010 protons per bunch) or single nominal bunches (1.1 x 1011 protons per bunch). This procedure is intended to ensure safe operation before full qualification of the machine protection set-up. Beam has been taken up the ramp to 6.5 TeV and through the squeeze to the planned 2016 operating scenario. The optics (i.e. the global focusing properties of the whole ring) have been measured and corrected to an unprecedented level: there is now excellent agreement between the machine model and the actual LHC. Some preliminary measurements of the global aperture have been performed and there are no apparent bottlenecks. The position of the ULO (Unidentified Lying Object) had been probed and it is in a similar positio...

  13. Showing that the race model inequality is not violated

    DEFF Research Database (Denmark)

    Gondan, Matthias; Riehl, Verena; Blurton, Steven Paul

    2012-01-01

    important being race models and coactivation models. Redundancy gains consistent with the race model have an upper limit, however, which is given by the well-known race model inequality (Miller, 1982). A number of statistical tests have been proposed for testing the race model inequality in single...... participants and groups of participants. All of these tests use the race model as the null hypothesis, and rejection of the null hypothesis is considered evidence in favor of coactivation. We introduce a statistical test in which the race model prediction is the alternative hypothesis. This test controls...

  14. A multimedia fate and chemical transport modeling system for pesticides: II. Model evaluation

    International Nuclear Information System (INIS)

    Li Rong; Yang Fuquan; Sloan, James J; Trevor Scholtz, M

    2011-01-01

    Pesticides have adverse health effects and can be transported over long distances to contaminate sensitive ecosystems. To address problems caused by environmental pesticides we developed a multimedia multi-pollutant modeling system, and here we present an evaluation of the model by comparing modeled results against measurements. The modeled toxaphene air concentrations for two sites, in Louisiana (LA) and Michigan (MI), are in good agreement with measurements (average concentrations agree to within a factor of 2). Because the residue inventory showed no soil residues at these two sites, resulting in no emissions, the concentrations must be caused by transport; the good agreement between the modeled and measured concentrations suggests that the model simulates atmospheric transport accurately. Compared to the LA and MI sites, the measured air concentrations at two other sites having toxaphene soil residues leading to emissions, in Indiana and Arkansas, showed more pronounced seasonal variability (higher in warmer months); this pattern was also captured by the model. The model-predicted toxaphene concentration fraction on particles (0.5-5%) agrees well with measurement-based estimates (3% or 6%). There is also good agreement between modeled and measured dry (1:1) and wet (within a factor of less than 2) depositions in Lake Ontario. Additionally this study identified erroneous soil residue data around a site in Texas in a published US toxaphene residue inventory, which led to very low modeled air concentrations at this site. Except for the erroneous soil residue data around this site, the good agreement between the modeled and observed results implies that both the US and Mexican toxaphene soil residue inventories are reasonably good. This agreement also suggests that the modeling system is capable of simulating the important physical and chemical processes in the multimedia compartments.

  15. Toxicity assessments of nonsteroidal anti-inflammatory drugs in isolated mitochondria, rat hepatocytes, and zebrafish show good concordance across chemical classes

    Energy Technology Data Exchange (ETDEWEB)

    Nadanaciva, Sashi [Compound Safety Prediction, Worldwide Medicinal Chemistry, Pfizer, Inc., Groton, CT 06340 (United States); Aleo, Michael D. [Drug Safety Research and Development, Pfizer Inc., Groton, CT 06340 (United States); Strock, Christopher J. [Cyprotex US, Watertown, MA 02472 (United States); Stedman, Donald B. [Drug Safety Research and Development, Pfizer Inc., Groton, CT 06340 (United States); Wang, Huijun [Computational Sciences, Pfizer Inc., Groton, CT 06340 (United States); Will, Yvonne, E-mail: yvonne.will@pfizer.com [Compound Safety Prediction, Worldwide Medicinal Chemistry, Pfizer, Inc., Groton, CT 06340 (United States)

    2013-10-15

    To reduce costly late-stage compound attrition, there has been an increased focus on assessing compounds in in vitro assays that predict attributes of human safety liabilities, before preclinical in vivo studies are done. Relevant questions when choosing a panel of assays for predicting toxicity are (a) whether there is general concordance in the data among the assays, and (b) whether, in a retrospective analysis, the rank order of toxicity of compounds in the assays correlates with the known safety profile of the drugs in humans. The aim of our study was to answer these questions using nonsteroidal anti-inflammatory drugs (NSAIDs) as a test set since NSAIDs are generally associated with gastrointestinal injury, hepatotoxicity, and/or cardiovascular risk, with mitochondrial impairment and endoplasmic reticulum stress being possible contributing factors. Eleven NSAIDs, flufenamic acid, tolfenamic acid, mefenamic acid, diclofenac, meloxicam, sudoxicam, piroxicam, diflunisal, acetylsalicylic acid, nimesulide, and sulindac (and its two metabolites, sulindac sulfide and sulindac sulfone), were tested for their effects on (a) the respiration of rat liver mitochondria, (b) a panel of mechanistic endpoints in rat hepatocytes, and (c) the viability and organ morphology of zebrafish. We show good concordance for distinguishing among/between NSAID chemical classes in the observations among the three approaches. Furthermore, the assays were complementary and able to correctly identify “toxic” and “non-toxic” drugs in accordance with their human safety profile, with emphasis on hepatic and gastrointestinal safety. We recommend implementing our multi-assay approach in the drug discovery process to reduce compound attrition. - Highlights: • NSAIDS cause liver and GI toxicity. • Mitochondrial uncoupling contributes to NSAID liver toxicity. • ER stress is a mechanism that contributes to liver toxicity. • Zebrafish and cell based assays are complimentary.

  16. Toxicity assessments of nonsteroidal anti-inflammatory drugs in isolated mitochondria, rat hepatocytes, and zebrafish show good concordance across chemical classes

    International Nuclear Information System (INIS)

    Nadanaciva, Sashi; Aleo, Michael D.; Strock, Christopher J.; Stedman, Donald B.; Wang, Huijun; Will, Yvonne

    2013-01-01

    To reduce costly late-stage compound attrition, there has been an increased focus on assessing compounds in in vitro assays that predict attributes of human safety liabilities, before preclinical in vivo studies are done. Relevant questions when choosing a panel of assays for predicting toxicity are (a) whether there is general concordance in the data among the assays, and (b) whether, in a retrospective analysis, the rank order of toxicity of compounds in the assays correlates with the known safety profile of the drugs in humans. The aim of our study was to answer these questions using nonsteroidal anti-inflammatory drugs (NSAIDs) as a test set since NSAIDs are generally associated with gastrointestinal injury, hepatotoxicity, and/or cardiovascular risk, with mitochondrial impairment and endoplasmic reticulum stress being possible contributing factors. Eleven NSAIDs, flufenamic acid, tolfenamic acid, mefenamic acid, diclofenac, meloxicam, sudoxicam, piroxicam, diflunisal, acetylsalicylic acid, nimesulide, and sulindac (and its two metabolites, sulindac sulfide and sulindac sulfone), were tested for their effects on (a) the respiration of rat liver mitochondria, (b) a panel of mechanistic endpoints in rat hepatocytes, and (c) the viability and organ morphology of zebrafish. We show good concordance for distinguishing among/between NSAID chemical classes in the observations among the three approaches. Furthermore, the assays were complementary and able to correctly identify “toxic” and “non-toxic” drugs in accordance with their human safety profile, with emphasis on hepatic and gastrointestinal safety. We recommend implementing our multi-assay approach in the drug discovery process to reduce compound attrition. - Highlights: • NSAIDS cause liver and GI toxicity. • Mitochondrial uncoupling contributes to NSAID liver toxicity. • ER stress is a mechanism that contributes to liver toxicity. • Zebrafish and cell based assays are complimentary

  17. The Analytical Instrumentarium for Predictive Analysis of Revenue from the Sale of Goods

    Directory of Open Access Journals (Sweden)

    Nosach Nataliia M.

    2017-12-01

    Full Text Available The article is aimed at elaborating recommendations on the selection of analytical instrumentarium for predictive analysis of revenue from the sale of goods, according to the nature of its seasonal changes. The necessity of carrying out predictive analysis of revenue from the sale of goods as an important component of its management is substantiated. The attention is focused on the necessity to use for predictive analysis of revenue from the sale of goods the trend-seasonal models which take into consideration both regularity and randomness of formation of values of levels of the series. A structural-logical model of technology of predictive analysis of revenue from the sale of goods has been proposed according to the nature of its seasonal changes. A number of criteria has been defined, which allow to reveal in a series of dynamics the presence of anomalous data, trend, and seasonal fluctuations. The iterative method of distribution of series of dynamics of revenue from the sale of goods by components has been tested. The recommendations on the choice of the trend model, which can be used to construct both point and interval predictions of the volume of proceeds from sale of goods, are provided.

  18. Assessing Goodness of Fit in Item Response Theory with Nonparametric Models: A Comparison of Posterior Probabilities and Kernel-Smoothing Approaches

    Science.gov (United States)

    Sueiro, Manuel J.; Abad, Francisco J.

    2011-01-01

    The distance between nonparametric and parametric item characteristic curves has been proposed as an index of goodness of fit in item response theory in the form of a root integrated squared error index. This article proposes to use the posterior distribution of the latent trait as the nonparametric model and compares the performance of an index…

  19. Learn good from bad: Effects of good and bad neighbors in spatial prisoners' dilemma games

    Science.gov (United States)

    Lu, Peng

    2015-10-01

    Cooperation is vital for the human society and this study focuses on how to promote cooperation. In our stratification model, there exist three classes: two minorities are elites who are prone to cooperate and scoundrels who are born to defect; one majority is the class of common people. Agents of these three classes interact with each other on a square lattice. Commons' cooperation and its factors are investigated. Contradicting our common sense, it indicates that elites play a negative role while scoundrels play a positive one in promoting commons' cooperation. Besides, effects of good and bad neighbors vary with temptation. When the temptation is smaller the positive effect is able to overcome the negative effect, but the later prevails when the temptation is larger. It concludes that common people are more prone to cooperate in harsh environment with bad neighbors, and a better environment with good neighbors merely leads to laziness and free riding of commons.

  20. Sharing the Costs of Access to a Set of Public Goods

    DEFF Research Database (Denmark)

    Hougaard, Jens Leth

    2018-01-01

    A group of agents share assess to a set of public goods. Each good has a cost and the total cost of all goods must be shared among the agents. Agents preferences are described by subsets of goods that provides the agent with service. As such, demands are binary, and it is further assumed...... that agents prefer a low cost share, but other differences in their individual preferences are irrelevant, making demand fully inelastic. The model captures central aspects of several classes of practical problems and therefore has many potential applications. The paper surveys some recent axiomatic...

  1. The common good

    OpenAIRE

    Argandoña, Antonio

    2011-01-01

    The concept of the common good occupied a relevant place in classical social, political and economic philosophy. After losing ground in the Modern age, it has recently reappeared, although with different and sometimes confusing meanings. This paper is the draft of a chapter of a Handbook; it explains the meaning of common good in the Aristotelian-Thomistic philosophy and in the Social Doctrine of the Catholic Church; why the common good is relevant; and how it is different from the other uses...

  2. A Good Teaching Technique: WebQuests

    Science.gov (United States)

    Halat, Erdogan

    2008-01-01

    In this article, the author first introduces and describes a new teaching tool called WebQuests to practicing teachers. He then provides detailed information about the structure of a good WebQuest. Third, the author shows the strengths and weaknesses of using Web-Quests in teaching and learning. Last, he points out the challenges for practicing…

  3. Dilemma of dilemmas: how collective and individual perspectives can clarify the size dilemma in voluntary linear public goods dilemmas.

    Directory of Open Access Journals (Sweden)

    Daniel B Shank

    Full Text Available Empirical findings on public goods dilemmas indicate an unresolved dilemma: that increasing size-the number of people in the dilemma-sometimes increases, decreases, or does not influence cooperation. We clarify this dilemma by first classifying public goods dilemma properties that specify individual outcomes as individual properties (e.g., Marginal Per Capita Return and group outcomes as group properties (e.g., public good multiplier, mathematically showing how only one set of properties can remain constant as the dilemma size increases. Underpinning decision-making regarding individual and group properties, we propose that individuals are motivated by both individual and group preferences based on a theory of collective rationality. We use Van Lange's integrated model of social value orientations to operationalize these preferences as an amalgamation of outcomes for self, outcomes for others, and equality of outcomes. Based on this model, we then predict how the public good's benefit and size, combined with controlling individual versus group properties, produce different levels of cooperation in public goods dilemmas. A two (low vs. high benefit by three (2-person baseline vs. 5-person holding constant individual properties vs. 5-person holding constant group properties factorial experiment (group n = 99; participant n = 390 confirms our hypotheses. The results indicate that when holding constant group properties, size decreases cooperation. Yet when holding constant individual properties, size increases cooperation when benefit is low and does not affect cooperation when benefit is high. Using agent-based simulations of individual and group preferences vis-à-vis the integrative model, we fit a weighted simulation model to the empirical data. This fitted model is sufficient to reproduce the empirical results, but only when both individual (self-interest and group (other-interest and equality preference are included. Our research contributes

  4. Trade in goods

    DEFF Research Database (Denmark)

    Sørensen, Karsten Engsig

    2006-01-01

    An analysis of the rules governing trade in goods under the GATT agreement and the Agreement on Safeguards......An analysis of the rules governing trade in goods under the GATT agreement and the Agreement on Safeguards...

  5. Social influence promotes cooperation in the public goods game

    Science.gov (United States)

    Wu, Te; Fu, Feng; Dou, Puxuan; Wang, Long

    2014-11-01

    Previous studies mainly consider the random selection pattern in which individuals randomly choose reference models from their neighbors for strategy updating. However, the random selection pattern is unable to capture all real world circumstances. We institute a spatial model to investigate the effects of influence-based reference selection pattern on the evolution of cooperation in the context of public goods games. Whenever experiencing strategy updating, all the individuals each choose one of its neighbors as a reference with the probability proportional to this neighbor’s influence. Levels of individuals’ influence are dynamical. When an individual is imitated, the level of its influence increases, thus constituting a positive feedback between the frequencies of individuals being imitated and the likelihood for them to be reference models. We find that the level of collective cooperation can be enhanced whenever the influence-based reference selection pattern is integrated into the strategy updating process. Results also show that the evolution of cooperation can be promoted when the increase in individuals’ frequency of being imitated upholds their influence in large magnitude. Our work may improve the understanding of how influence-based selection patterns promote cooperative behavior.

  6. Echoic memory processes in good and poor readers.

    Science.gov (United States)

    Sipe, S; Engle, R W

    1986-07-01

    Four experiments were conducted to determine whether echoic memory plays a role in differences between good and poor readers. The first two experiments used a suffix procedure in which the subject is read a list of digits with either a tone control or the word go appended to the list. For lists that exceeded the length of the subjects memory span by one digit (i.e., that avoided ceiling effects), the poor readers showed a larger decrement in the suffix condition than did the good readers. The third experiment was directed at the question of whether the duration of echoic memory is different for good and poor readers. Children shadowed words presented to one ear at a rate determined to give 75-85% shadowing accuracy. The items presented to the nonattended ear were words and an occasional digit. At various intervals after the presentation of the digit, a light signaled that the subject was to cease shadowing and attempt to recall any digit that had occurred in the nonattended ear recently. Whereas good and poor readers recalled the digit equally if tested immediately after presentation, the poor readers showed a faster decline in recall of the digit as retention interval increased. A fourth experiment was conducted to determine whether the differences in echoic memory were specific to speech stimuli or occurred at a more basic level of aural persistence. Bursts of white noise were separated by 9-400 ms of silence and the subject was to say whether there were one or two sounds presented. There were no differences in detectability functions for good and poor readers.

  7. Return on research investments: personal good versus public good

    Science.gov (United States)

    Fox, P. A.

    2017-12-01

    For some time the outputs, i.e. what's produced, of publicly and privately funded research while necessary, are far from sufficient, when considering an overall return on (research) investment. At the present time products such as peer-reviewed papers, websites, data, and software are recognized by funders on timescales related to research awards and reporting. However, from a consumer perspective impact and value are determined at the time a product is discovered, accessed, assessed and used. As is often the case, the perspectives of producer and consumer communities can be distinct and not intersect at all. We contrast personal good, i.e. credit, reputation, with that of public good, e.g. interest, leverage, exploitation, and more. This presentation will elaborate on both the metaphorical and idealogical aspects of applying a "return on investment" frame for the topic of assessing "good".

  8. Selecting a dynamic simulation modeling method for health care delivery research-part 2: report of the ISPOR Dynamic Simulation Modeling Emerging Good Practices Task Force.

    Science.gov (United States)

    Marshall, Deborah A; Burgos-Liz, Lina; IJzerman, Maarten J; Crown, William; Padula, William V; Wong, Peter K; Pasupathy, Kalyan S; Higashi, Mitchell K; Osgood, Nathaniel D

    2015-03-01

    In a previous report, the ISPOR Task Force on Dynamic Simulation Modeling Applications in Health Care Delivery Research Emerging Good Practices introduced the fundamentals of dynamic simulation modeling and identified the types of health care delivery problems for which dynamic simulation modeling can be used more effectively than other modeling methods. The hierarchical relationship between the health care delivery system, providers, patients, and other stakeholders exhibits a level of complexity that ought to be captured using dynamic simulation modeling methods. As a tool to help researchers decide whether dynamic simulation modeling is an appropriate method for modeling the effects of an intervention on a health care system, we presented the System, Interactions, Multilevel, Understanding, Loops, Agents, Time, Emergence (SIMULATE) checklist consisting of eight elements. This report builds on the previous work, systematically comparing each of the three most commonly used dynamic simulation modeling methods-system dynamics, discrete-event simulation, and agent-based modeling. We review criteria for selecting the most suitable method depending on 1) the purpose-type of problem and research questions being investigated, 2) the object-scope of the model, and 3) the method to model the object to achieve the purpose. Finally, we provide guidance for emerging good practices for dynamic simulation modeling in the health sector, covering all aspects, from the engagement of decision makers in the model design through model maintenance and upkeep. We conclude by providing some recommendations about the application of these methods to add value to informed decision making, with an emphasis on stakeholder engagement, starting with the problem definition. Finally, we identify areas in which further methodological development will likely occur given the growing "volume, velocity and variety" and availability of "big data" to provide empirical evidence and techniques

  9. Optimal Monetary Policy with Durable Consumption Goods and Factor Demand Linkages

    DEFF Research Database (Denmark)

    Petrella, Ivan; Santoro, Emiliano

    of production in both sectors, according to an input-output matrix calibrated on the US economy. As shown in a number of recent contributions, this roundabout technology allows us to reconcile standard two-sector New Keynesian models with the empirical evidence showing co-movement between durable and non......-durable spending in response to a monetary policy shock. A main result of our monetary policy analysis is that strategic complementarities generated by factor demand linkages amplify social welfare loss. As the degree of interconnection between sectors increases, the cost of misperceiving the correct production......This paper deals with the implications of factor demand linkages for monetary policy design. We develop a dynamic general equilibrium model with two sectors that produce durable and non-durable goods, respectively. Part of the output produced in each sector is used as an intermediate input...

  10. Good-enough linguistic representations and online cognitive equilibrium in language processing.

    Science.gov (United States)

    Karimi, Hossein; Ferreira, Fernanda

    2016-01-01

    We review previous research showing that representations formed during language processing are sometimes just "good enough" for the task at hand and propose the "online cognitive equilibrium" hypothesis as the driving force behind the formation of good-enough representations in language processing. Based on this view, we assume that the language comprehension system by default prefers to achieve as early as possible and remain as long as possible in a state of cognitive equilibrium where linguistic representations are successfully incorporated with existing knowledge structures (i.e., schemata) so that a meaningful and coherent overall representation is formed, and uncertainty is resolved or at least minimized. We also argue that the online equilibrium hypothesis is consistent with current theories of language processing, which maintain that linguistic representations are formed through a complex interplay between simple heuristics and deep syntactic algorithms and also theories that hold that linguistic representations are often incomplete and lacking in detail. We also propose a model of language processing that makes use of both heuristic and algorithmic processing, is sensitive to online cognitive equilibrium, and, we argue, is capable of explaining the formation of underspecified representations. We review previous findings providing evidence for underspecification in relation to this hypothesis and the associated language processing model and argue that most of these findings are compatible with them.

  11. Modeling Patient No-Show History and Predicting Future Outpatient Appointment Behavior in the Veterans Health Administration.

    Science.gov (United States)

    Goffman, Rachel M; Harris, Shannon L; May, Jerrold H; Milicevic, Aleksandra S; Monte, Robert J; Myaskovsky, Larissa; Rodriguez, Keri L; Tjader, Youxu C; Vargas, Dominic L

    2017-05-01

    Missed appointments reduce the efficiency of the health care system and negatively impact access to care for all patients. Identifying patients at risk for missing an appointment could help health care systems and providers better target interventions to reduce patient no-shows. Our aim was to develop and test a predictive model that identifies patients that have a high probability of missing their outpatient appointments. Demographic information, appointment characteristics, and attendance history were drawn from the existing data sets from four Veterans Affairs health care facilities within six separate service areas. Past attendance behavior was modeled using an empirical Markov model based on up to 10 previous appointments. Using logistic regression, we developed 24 unique predictive models. We implemented the models and tested an intervention strategy using live reminder calls placed 24, 48, and 72 hours ahead of time. The pilot study targeted 1,754 high-risk patients, whose probability of missing an appointment was predicted to be at least 0.2. Our results indicate that three variables were consistently related to a patient's no-show probability in all 24 models: past attendance behavior, the age of the appointment, and having multiple appointments scheduled on that day. After the intervention was implemented, the no-show rate in the pilot group was reduced from the expected value of 35% to 12.16% (p value < 0.0001). The predictive model accurately identified patients who were more likely to miss their appointments. Applying the model in practice enables clinics to apply more intensive intervention measures to high-risk patients. Reprint & Copyright © 2017 Association of Military Surgeons of the U.S.

  12. Deploying Serious Games for Management in Higher Education: lessons learned and good practices

    Directory of Open Access Journals (Sweden)

    Jannicke Baalsrud Hauge

    2014-08-01

    Full Text Available Deployment of serious games (SGs and their insertion in higher education (HE curricula is still low. The lacks papers describing deployment of SGs in HE critically showing educational benefits and providing guidelines and good practices for their use. With the present work, we intend to make a first step in this direction, by reporting our experience in using state of the art managerial SGs in MSc engineering/business courses in four different European universities. In order to describe and analyse the educational characteristics and effectiveness of each game, we propose to use two models that we have straightforwardly extracted from two major pedagogical paradigms: the Bloom’s revised cognitive learning goals taxonomy and the Kolb’s experiential learning cycle. Based on our experience, we also propose a set of lessons and good practices to incentivize and better support deployment of SGs in HE courses.

  13. Transport of hazardous goods

    International Nuclear Information System (INIS)

    1989-01-01

    The course 'Transport of hazardous goods' was held in Berlin in November 1988 in cooperation with the Bundesanstalt fuer Materialforschung und -pruefung. From all lecturs, two are recorded separately: 'Safety of tank trucks - requirements on the tank, development possibiities of active and passive safety' and 'Requirements on the transport of radioactive materials - possible derivations for other hazardous goods'. The other lectures deal with hazardous goods law, requirements on packinging, risk assessment, railroad transport, hazardous goods road network, insurance matters, EC regulations, and waste tourism. (HSCH) [de

  14. An introduction to good practices in cognitive modeling

    NARCIS (Netherlands)

    Heathcote, A.; Brown, S.D.; Wagenmakers, E.-J.; Forstmann, B.U.; Wagenmakers, E.-J.

    2015-01-01

    Cognitive modeling can provide important insights into the underlying causes of behavior, but the validity of those insights rests on careful model development and checking. We provide guidelines on five important aspects of the practice of cognitive modeling: parameter recovery, testing selective

  15. What makes segmentation good? A case study in boreal forest habitat mapping

    OpenAIRE

    Räsänen, Aleksi; Rusanen, Antti; Kuitunen, Markku; Lensu, Anssi

    2013-01-01

    Segmentation goodness evaluation is a set of approaches meant for deciding which segmentation is good. In this study, we tested different supervised segmentation evaluation measures and visual interpretation in the case of boreal forest habitat mapping in Southern Finland. The data used were WorldView-2 satellite imagery, a lidar digital elevation model (DEM), and a canopy height model (CHM) in 2 m resolution. The segmentation methods tested were the fractal net evolution approach (FNEA) and ...

  16. Assessing the sense of `good at' and `not good at' toward learning topics of mathematics with conjoint analysis

    Science.gov (United States)

    Izuta, Giido; Nishikawa, Tomoko

    2017-05-01

    Over the past years, educational psychology and pedagogy communities have focused on the metacognition formalism as a helpful approach to carry out investigations on the feeling of difficulty in mastering some classroom materials that students acquire through their subjective experiences of learning in schools. Motivated by hitherto studies, this work deals with the assessment of the awareness of `good at' and `not good at' that Japanese junior high school students have towards the main learning modules in their three years of mathematics. More specifically, the aims here are (i) to shed some light into how the awareness varies across the grades and gender; (ii) to get some insights into the extent to what the conjoint analysis can be applied to understand the students' feelings toward learning activities. To accomplish them, a conjoint analysis survey with three conjoint attributes, each with two levels, were designed to assess the learners' perceptions of `good at' and `not good at' with respect to arithmetic (algebraic operations), geometry and functions, which make up the three major modules of their curricula. The measurements took place in a public junior high school with 616 school children. It turned out that the conjoint analyses for boys and girls of each grade generated the partial utility and importance graphs which along with a pre-established precision of measurement allowed us to form groups of pupils according to their `sense of being good at' characteristics. Moreover, the results showed that the number of groups obtained differed for boys and girls as well as grades when the gender and school years were considered for comparisons. These findings suggesting that female students outnumbers their peers in number of `good at' despite the low number of females pursuing careers in mathematics and related fields imply that investigation on the causes of this juxtaposition has to be taken into account in the future.

  17. A good patient?

    DEFF Research Database (Denmark)

    Campbell, Catherine; Scott, Kerry; Skovdal, Morten

    2015-01-01

    , physical cleanliness, honesty, gratitude and lifestyle adaptations (taking pills correctly andcoming to the clinic when told). As healthcare workers may decide to punish patients who do not live up the‘good patient persona’, many patients seek to perform within the confines of the ‘good patient persona...

  18. On good ETOL forms

    DEFF Research Database (Denmark)

    Skyum, Sven

    1978-01-01

    This paper continues the study of ETOL forms and good EOL forms done by Maurer, Salomaa and Wood. It is proven that binary very complete ETOL forms exist, good synchronized ETOL forms exist and that no propagating or synchronized ETOL form can be very complete.......This paper continues the study of ETOL forms and good EOL forms done by Maurer, Salomaa and Wood. It is proven that binary very complete ETOL forms exist, good synchronized ETOL forms exist and that no propagating or synchronized ETOL form can be very complete....

  19. On Having a Good

    OpenAIRE

    Korsgaard, Christine M.

    2014-01-01

    In some recent papers I have been arguing that the concept ‘good-for’ is prior to the concept of ‘good’ (in the sense in which final ends are good), and exploring the implications of that claim. One of those implications is that everything that is good is good for someone. That implication seems to fall afoul of our intuitions about certain cases, such as the intuition that a world full of happy people and animals is better than a world full of miserable ones, even if the people and animals a...

  20. Accidental goodness?

    DEFF Research Database (Denmark)

    Richter, Anne

    In postmodern capitalist market economies, management of the single organisation is bound to be guided by several rationales, which are in conflict with each other. For some writers this perception leads to the argument, that conceptions of management should strive towards goals beyond the present...... society. For others, the handling of plural perspectives is just a management discipline. However these positions seem to share a focus on organization as a the arena for the organization of the good. The contribution looks at the management of occupational accidents as an example of striving for good...

  1. On the density of nearly regular graphs with a good edge-labelling

    OpenAIRE

    Mehrabian, Abbas

    2011-01-01

    A good edge-labelling of a simple graph is a labelling of its edges with real numbers such that, for any ordered pair of vertices (u,v), there is at most one nondecreasing path from u to v. Say a graph is good if it admits a good edge-labelling, and is bad otherwise. Our main result is that any good n-vertex graph whose maximum degree is within a constant factor of its average degree (in particular, any good regular graph) has at most n^{1+o(1)} edges. As a corollary, we show that there are b...

  2. The Varieties of Good Design

    DEFF Research Database (Denmark)

    Ylirisku, Salu; Arvola, Mattias

    2018-01-01

    This chapter explores the philosopher and logician Georg Henrik von Wright’s metaethical treatise of the varieties of goodness in the context of design. von Wright investigated the use of notion of ‘good’ in language, and he identified six kinds of goodness: namely utilitarian goodness, instrumen......This chapter explores the philosopher and logician Georg Henrik von Wright’s metaethical treatise of the varieties of goodness in the context of design. von Wright investigated the use of notion of ‘good’ in language, and he identified six kinds of goodness: namely utilitarian goodness...

  3. Income and Wealth Distribution in a Neoclassical Two-Sector Heterogeneous-Households Growth Model with Elastic Labor Supply and Consumer Durable Goods

    Directory of Open Access Journals (Sweden)

    Wei-Bin ZHANG

    2017-06-01

    Full Text Available This paper proposes a two-sector two-group growth model with elastic labor supply and consumer durable goods. We study dynamics of wealth and income distribution in a competitive economy with capital accumulation as the main engine of economic growth. The model is built on the Uzawa two-sector model. It is also influenced by the neoclassical growth theory and the post-Keynesian theory of growth and distribution. We plot the motion of the economic system and determine the economic equilibrium. We carry out comparative dynamic analysis with regard to the propensity to save and improvements in human capital and technology.

  4. Loss models for long Josephson junctions

    DEFF Research Database (Denmark)

    Olsen, O. H.; Samuelsen, Mogens Rugholm

    1984-01-01

    A general model for loss mechanisms in long Josephson junctions is presented. An expression for the zero-field step is found for a junction of overlap type by means of a perturbation method. Comparison between analytic solution and perturbation result shows good agreement.......A general model for loss mechanisms in long Josephson junctions is presented. An expression for the zero-field step is found for a junction of overlap type by means of a perturbation method. Comparison between analytic solution and perturbation result shows good agreement....

  5. The Good Work.

    Science.gov (United States)

    Csikszentmihalyi, Mihaly

    2003-01-01

    Examines the working lives of geneticists and journalists to place into perspective what lies behind personal ethics and success. Defines "good work" as productive activity that is valued socially and loved by people engaged in it. Asserts that certain cultural values, social controls, and personal standards are necessary to maintain good work and…

  6. [Identification of Good-Practice Projects in Promoting Physical Activity - Methods, Pitfalls and Sampled Outcomes].

    Science.gov (United States)

    Henn, Annette; Karger, Claudia; Wöhlken, Katrin; Meier, Diana; Ungerer-Röhrich, Ulrike; Graf, Christine; Woll, Alexander

    2017-03-01

    The aim of this paper is to identify and show examples of good practice of public health promotion. For this, uniform quality criteria were worked out under consideration of national and international scientific literature.For the identification of examples of good practice, a comparison of different quality criteria was carried out and combined with each other in a first step. In the following step, examples of good practice were identified after a comprehensive search. The choice of the "good-practice" projects is exemplary and lays no claim to completeness.6 main quality criteria (QC) of programs promoting physical activity could be identified in the national and international context. The analysis showed altogether 10 projects which can exemplarily be classified as examples of good practice of the target groups of children and teenagers, adults, older people and people with pre-existing illnesses. These projects, however, show major differences in their (methodological) quality.The analysis reports a lack of "Good-Practice" examples. Deficits lie mainly in documentation and sustainability. Because of incomplete documentation, an assessment as a "Good-Practice" example is only possible to a limited extent; a lot of information, particularly in the evaluation, is missing. © Georg Thieme Verlag KG Stuttgart · New York.

  7. Cultural Education and the Voluntary Provision of Cultural Goods: An Experimental Study

    OpenAIRE

    Massimo Finocchiaro Castro

    2004-01-01

    We study the effect that the possibility of investing in cultural education has on the voluntary contributions to a cultural good. This is done in a two-stage public-good experiment. We also provide treatments with different context in order to control for a possible framing effect. Our results show the absence of an effect of cultural education on the contributions to the cultural good and a slight increase in the allocations of subjectsÂendowments to the cultural good when the cultural cont...

  8. Comparative analysis on the probability of being a good payer

    Science.gov (United States)

    Mihova, V.; Pavlov, V.

    2017-10-01

    Credit risk assessment is crucial for the bank industry. The current practice uses various approaches for the calculation of credit risk. The core of these approaches is the use of multiple regression models, applied in order to assess the risk associated with the approval of people applying for certain products (loans, credit cards, etc.). Based on data from the past, these models try to predict what will happen in the future. Different data requires different type of models. This work studies the causal link between the conduct of an applicant upon payment of the loan and the data that he completed at the time of application. A database of 100 borrowers from a commercial bank is used for the purposes of the study. The available data includes information from the time of application and credit history while paying off the loan. Customers are divided into two groups, based on the credit history: Good and Bad payers. Linear and logistic regression are applied in parallel to the data in order to estimate the probability of being good for new borrowers. A variable, which contains value of 1 for Good borrowers and value of 0 for Bad candidates, is modeled as a dependent variable. To decide which of the variables listed in the database should be used in the modelling process (as independent variables), a correlation analysis is made. Due to the results of it, several combinations of independent variables are tested as initial models - both with linear and logistic regression. The best linear and logistic models are obtained after initial transformation of the data and following a set of standard and robust statistical criteria. A comparative analysis between the two final models is made and scorecards are obtained from both models to assess new customers at the time of application. A cut-off level of points, bellow which to reject the applications and above it - to accept them, has been suggested for both the models, applying the strategy to keep the same Accept Rate as

  9. Papillary Thyroid Cancer: The Good and Bad of the "Good Cancer".

    Science.gov (United States)

    Randle, Reese W; Bushman, Norah M; Orne, Jason; Balentine, Courtney J; Wendt, Elizabeth; Saucke, Megan; Pitt, Susan C; Macdonald, Cameron L; Connor, Nadine P; Sippel, Rebecca S

    2017-07-01

    Papillary thyroid cancer is often described as the "good cancer" because of its treatability and relatively favorable survival rates. This study sought to characterize the thoughts of papillary thyroid cancer patients as they relate to having the "good cancer." This qualitative study included 31 papillary thyroid cancer patients enrolled in an ongoing randomized trial. Semi-structured interviews were conducted with participants at the preoperative visit and two weeks, six weeks, six months, and one year after thyroidectomy. Grounded theory was used, inductively coding the first 113 interview transcripts with NVivo 11. The concept of thyroid cancer as "good cancer" emerged unprompted from 94% (n = 29) of participants, mostly concentrated around the time of diagnosis. Patients encountered this perception from healthcare providers, Internet research, friends, and preconceived ideas about other cancers. While patients generally appreciated optimism, this perspective also generated negative feelings. It eased the diagnosis of cancer but created confusion when individual experiences varied from expectations. Despite initially feeling reassured, participants described feeling the "good cancer" characterization invalidated their fears of having cancer. Thyroid cancer patients expressed that they did not want to hear that it's "only thyroid cancer" and that it's "no big deal," because "cancer is cancer," and it is significant. Patients with papillary thyroid cancer commonly confront the perception that their malignancy is "good," but the favorable prognosis and treatability of the disease do not comprehensively represent their cancer fight. The "good cancer" perception is at the root of many mixed and confusing emotions. Clinicians emphasize optimistic outcomes, hoping to comfort, but they might inadvertently invalidate the impact thyroid cancer has on patients' lives.

  10. Differentiating and evaluating common good and public good: making implicit assumptions explicit in the contexts of consent and duty to participate.

    Science.gov (United States)

    Bialobrzeski, A; Ried, J; Dabrock, P

    2012-01-01

    The notions 'common good' and 'public good' are mostly used as synonyms in bioethical discussion of biobanks, but have different origins. As a consequence, they should be applied differently. In this article, the respective characteristics are worked out and then subsequently examined which consent models emerge from them. Distinguishing normative and descriptive traits of both concepts, it turns out that one concept is unjustly used, and that the other one fits better to the context of a plural society. A reflected use of these differing concepts may help to choose an appropriate form of consent and allows public trust in biobank research to deepen. Copyright © 2012 S. Karger AG, Basel.

  11. Is profitability a good proxy for efficiency? Evidence from the subsector of tour operators

    Directory of Open Access Journals (Sweden)

    Hedija Veronika

    2017-12-01

    Full Text Available The goal of the paper is to evaluate the economic efficiency of tour operators in the Czech Republic in the period 2007-2014 using data envelopment analysis (DEA models and prove the link between economic efficiency and profitability and to find out if profitability is a good proxy for economic efficiency. Data was exported from the database Albertina CZ Gold Edition. We calculated the efficiency score using CCR (Charnes, Cooper and Rhodes and BCC (Banker, Charnes and Cooper models based on 3 inputs and 1 output. In the years 2007 to 2010, the efficiency score of almost all the companies was higher than 0.5; however, in years since 2011, we revealed significant differences in the efficiency of individual firms and only about 40 percent of tour operators achieved an efficiency score higher than 0.5. Using Pearson and Spearman correlation coefficients, our findings show that, in the case of the Czech tour operator market, profitability ratios do not correspond with firm efficiency. Profitability ratios are not a good proxy for economic efficiency and should not be used as the only firm criterion of performance.

  12. "Grey nomads" in Australia: are they a good model for successful aging and health?

    Science.gov (United States)

    Higgs, Paul F D; Quirk, Frances

    2007-10-01

    Lifestyle factors have been identified as being very important in determining health in later life. Nutrition, exercise, and social environment all interact to promote, or to limit, opportunities for an active and healthy post-working life. Not only are rates of chronic illness and disability reduced through the promotion of healthy lifestyles, but also quality of life is maintained through the compression of morbidity. Governments in Australia, as in the European Union and North America, have highlighted the importance of behavioral change in health promotion strategies with the aim of having an impact on the health-related lifestyles of their populations. This paper examines the example of a group of older Australians, the "grey nomads," who may present opportunities for examining health-related lifestyle changes. The term grey nomad refers to a portion of the older population in Australia who choose to use their later years and retirement as opportunities for travel and leisure, mainly within the confines of the Australian continent. As such, they are similar to groups in North America, such as the "snow birds," who travel to the southern United States to escape the colder winters of more northerly latitudes. Similar seasonal migrations occur from Northern to Southern Europe. What all share in common is an active culture/lifestyle of attempting to "age successfully." Grey nomads also participate in the creation of what can be termed postmodern communities, where they and other regular travelers may develop a sense of community feeling with others who are also regularly returning to the same spot year after year. Social support is highly predictive of health outcomes and such mobile communities may prove a positive factor in promoting good health. In this paper we examine whether the "grey nomads" represent a good model for improving health-related lifestyles in later life.

  13. Entanglement Between Demand and Supply in Markets with Bandwagon Goods

    Science.gov (United States)

    Gordon, Mirta B.; Nadal, Jean-Pierre; Phan, Denis; Semeshenko, Viktoriya

    2013-05-01

    Whenever customers' choices (e.g. to buy or not a given good) depend on others choices (cases coined `positive externalities' or `bandwagon effect' in the economic literature), the demand may be multiply valued: for a same posted price, there is either a small number of buyers, or a large one—in which case one says that the customers coordinate. This leads to a dilemma for the seller: should he sell at a high price, targeting a small number of buyers, or at low price targeting a large number of buyers? In this paper we show that the interaction between demand and supply is even more complex than expected, leading to what we call the curse of coordination: the pricing strategy for the seller which aimed at maximizing his profit corresponds to posting a price which, not only assumes that the customers will coordinate, but also lies very near the critical price value at which such high demand no more exists. This is obtained by the detailed mathematical analysis of a particular model formally related to the Random Field Ising Model and to a model introduced in social sciences by T.C. Schelling in the 70's.

  14. Veracity in big data: How good is good enough.

    Science.gov (United States)

    Reimer, Andrew P; Madigan, Elizabeth A

    2018-01-01

    Veracity, one of the five V's used to describe big data, has received attention when it comes to using electronic medical record data for research purposes. In this perspective article, we discuss the idea of data veracity and associated concepts as it relates to the use of electronic medical record data and administrative data in research. We discuss the idea that electronic medical record data are "good enough" for clinical practice and, as such, are "good enough" for certain applications. We then propose three primary issues to attend to when establishing data veracity: data provenance, cross validation, and context.

  15. A Good Suit Beats a Good Idea.

    Science.gov (United States)

    Machiavelli, Nick

    1992-01-01

    Inspired by Niccolo Machiavelli, this column offers beleaguered school executives advice on looking good, dressing well, losing weight, beating the proper enemy, and saying nothing. Administrators who follow these simple rules should have an easier life, jealous colleagues, well-tended gardens, and respectful board members. (MLH)

  16. Neighborhood scale quantification of ecosystem goods and ...

    Science.gov (United States)

    Ecosystem goods and services are those ecological structures and functions that humans can directly relate to their state of well-being. Ecosystem goods and services include, but are not limited to, a sufficient fresh water supply, fertile lands to produce agricultural products, shading, air and water of sufficient quality for designated uses, flood water retention, and places to recreate. The US Environmental Protection Agency (USEPA) Office of Research and Development’s Tampa Bay Ecosystem Services Demonstration Project (TBESDP) modeling efforts organized existing literature values for biophysical attributes and processes related to EGS. The goal was to develop a database for informing mapped-based EGS assessments for current and future land cover/use scenarios at multiple scales. This report serves as a demonstration of applying an EGS assessment approach at the large neighborhood scale (~1,000 acres of residential parcels plus common areas). Here, we present mapped inventories of ecosystem goods and services production at a neighborhood scale within the Tampa Bay, FL region. Comparisons of the inventory between two alternative neighborhood designs are presented as an example of how one might apply EGS concepts at this scale.

  17. Memories of good deeds past: The reinforcing power of prosocial behavior in children.

    Science.gov (United States)

    Tasimi, Arber; Young, Liane

    2016-07-01

    Does considering one's past prosociality affect future behavior? Prior research has revealed instances in which adults engage in additional prosocial behavior-moral reinforcement-as well as instances in which adults engage in worse behavior-moral licensing. The current study examined the developmental origins of these effects by testing whether 6- to 8-year-old children (N=225) are more or less generous after recalling their own good deeds. Children were asked to recount a time when they were nice, were mean, or watched a movie. Children behaved more generously after recalling a time when they were nice. We show that this boost in generosity was not simply the result of instructing children to consider nice behavior; children's giving did not increase after recalling others' good deeds. We also show that, even after recounting multiple instances of their past goodness, children continue to behave more generously. These findings suggest that doing good leads to more good in children. Copyright © 2016 Elsevier Inc. All rights reserved.

  18. Participative management: Concept and application in consumer goods companies

    Directory of Open Access Journals (Sweden)

    Ann I Ogbo

    2016-11-01

    Full Text Available This paper attempts to ascertain the impact of participative management on workflows, its influence on sales output and how well the concept is practised by consumer goods companies in Nigeria. Study adopted the survey design; questionnaires were used to collect necessary data from sales personnel across 10 states in South-Ssouth and South East Nigeria. Respondents rated the concept and application of participative management as it affects their work environment and sales output of the company. Statistical results of the study showed that 92.08% of the respondents believe that there are benefits derivable from participative management and that these benefits improve both sales output and workflow. 48% believe that participative management is practised in firms. Hypotheses tested using the chi-square test statistic revealed that: Consumer goods companies benefit from practising participative management, Participative management has effect on sales output of consumer goods companies, and the concept of participative management is not fully practised by consumer goods companies in Nigeria. These findings indicate that participative management principles need to be inculcated fully in the running of sales organisations so as to increase sales volume and ultimately boost the profit of consumer goods companies

  19. Preliminary evaluation of the activity concentration limits for consumer goods containing NORM

    Energy Technology Data Exchange (ETDEWEB)

    Jang, Mee; Chung, Kun Ho; Ji, Young Yong; Lim, Jong Myung; Kang, Mun Ja; Choi, Guen Sik [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2016-06-15

    To protect the public from natural radioactive materials, the 'Act on safety control of radioactive rays around living environment' was established in Korea. There is an annual effective dose limit of 1 mSv for products, but the activity concentration limit for products is not established yet. To suggest the activity concentration limits for consumer goods containing NORM, in this research, we assumed the 'small room model' surrounding the ICRP reference phantom to simulate the consumer goods in contact with the human bodies. Using the Monte Carlo code MCNPX, we evaluate the effective dose rate for the ICRP reference phantom in a small room with dimension of phantom size and derived the activity concentration limit for consumer goods. The consumer goods have about 1600, 1200 and 19000 Bq·kg{sup -1} for {sup 226}Ra, {sup 232}Th and {sup 40}K, and the activity concentration limits are about six times comparing with the values of building materials. We applied the index to real samples, though we did not consider radioactivity of {sup 40}K, indexes of the some samples are more than 6. However, this index concept using small room model is very conservative, for the consumer goods over than index 6, it is necessary to reevaluate the absorbed dose considering real usage scenario and material characteristics. In this research, we derived activity concentration limits for consumer goods in contact with bodies and the results can be used as preliminary screening tool for consumer goods as index concept.

  20. Preliminary evaluation of the activity concentration limits for consumer goods containing NORM

    International Nuclear Information System (INIS)

    Jang, Mee; Chung, Kun Ho; Ji, Young Yong; Lim, Jong Myung; Kang, Mun Ja; Choi, Guen Sik

    2016-01-01

    To protect the public from natural radioactive materials, the 'Act on safety control of radioactive rays around living environment' was established in Korea. There is an annual effective dose limit of 1 mSv for products, but the activity concentration limit for products is not established yet. To suggest the activity concentration limits for consumer goods containing NORM, in this research, we assumed the 'small room model' surrounding the ICRP reference phantom to simulate the consumer goods in contact with the human bodies. Using the Monte Carlo code MCNPX, we evaluate the effective dose rate for the ICRP reference phantom in a small room with dimension of phantom size and derived the activity concentration limit for consumer goods. The consumer goods have about 1600, 1200 and 19000 Bq·kg -1 for 226 Ra, 232 Th and 40 K, and the activity concentration limits are about six times comparing with the values of building materials. We applied the index to real samples, though we did not consider radioactivity of 40 K, indexes of the some samples are more than 6. However, this index concept using small room model is very conservative, for the consumer goods over than index 6, it is necessary to reevaluate the absorbed dose considering real usage scenario and material characteristics. In this research, we derived activity concentration limits for consumer goods in contact with bodies and the results can be used as preliminary screening tool for consumer goods as index concept

  1. The household decision making process in replacement of durable goods

    OpenAIRE

    Marell Molander, Agneta

    1998-01-01

    As durables are essential in many households, the level of ownership is high and, due to the high degree of penetration, a vast proportion of the current sales are replacement purchases. Even though a lot of research attention has been paid to decision making and decision processes many models are oriented towards non-durable goods and although a majority of purchases of many durable goods are replacements, few studies seem to make a distinction between a replacement purchase decision and a d...

  2. The Good Society: Lessons for Integrated Governance

    Directory of Open Access Journals (Sweden)

    Neesham C.

    2009-12-01

    Full Text Available In this paper I argue that philosophies of the good society can inform theories of integrated governance in two significant ways. Firstly, they can provide a reasonable foundation for legitimating forms of authority to govern a society across the government, corporate and civil sector. Secondly, they promote value systems that can be constitutive of a normative theory of integrated governance. In developing this argument, I explore conceptions of the good society put forward by Marquis de Condorcet, Adam Smith and Karl Marx, and evaluate the modalities in which the social projects proposed by these authors involve issues of integrated governance. For this purpose, I examine the three theories in relation to three questions: (1 What goals (or objectives should social action be directed to? (2 What should be the scope and limits of social responsibility lying behind the social authority of each sector (government, market or civil society? (3 How is social authority to be exercised beyond legislation? What source(s of legitimacy should one appeal to? Although Condorcet’s idea of the natural social order, Smith’s system of natural liberty and Marx’s political economy of human value have all received their fair share of criticism from empirical theories of society, I suggest that these conceptions are still useful to us today as radical normative experiments. These experiments can have guiding value in formulating models of integrated governance. However, the fundamental differences displayed by these three conceptions reveal the importance of determining whether one can develop models of integrated governance that would accommodate plural, incompatible, or unknown conceptions of the good society.

  3. How good is an AS-IS model really?

    NARCIS (Netherlands)

    Arkılıç, I.G.; Reijers, H.A.; Goverde, R.R.H.M.J.; La Rosa, M.; Soffer, P.

    2013-01-01

    Redesign projects for business processes usually start with analysing and mapping an actual situation within an organization. This step is called "developing an AS-IS business process model". However, many contemporary organizations have invested in developing and sustaining process models of their

  4. What makes a good clinical student and teacher? An exploratory study.

    Science.gov (United States)

    Goldie, John; Dowie, Al; Goldie, Anne; Cotton, Phil; Morrison, Jill

    2015-03-10

    What makes a good clinical student is an area that has received little coverage in the literature and much of the available literature is based on essays and surveys. It is particularly relevant as recent curricular innovations have resulted in greater student autonomy. We also wished to look in depth at what makes a good clinical teacher. A qualitative approach using individual interviews with educational supervisors and focus groups with senior clinical students was used. Data was analysed using a "framework" technique. Good clinical students were viewed as enthusiastic and motivated. They were considered to be proactive and were noted to be visible in the wards. They are confident, knowledgeable, able to prioritise information, flexible and competent in basic clinical skills by the time of graduation. They are fluent in medical terminology while retaining the ability to communicate effectively and are genuine when interacting with patients. They do not let exam pressure interfere with their performance during their attachments. Good clinical teachers are effective role models. The importance of teachers' non-cognitive characteristics such as inter-personal skills and relationship building was particularly emphasised. To be effective, teachers need to take into account individual differences among students, and the communicative nature of the learning process through which students learn and develop. Good teachers were noted to promote student participation in ward communities of practice. Other members of clinical communities of practice can be effective teachers, mentors and role models. Good clinical students are proactive in their learning; an important quality where students are expected to be active in managing their own learning. Good clinical students share similar characteristics with good clinical teachers. A teacher's enthusiasm and non-cognitive abilities are as important as their cognitive abilities. Student learning in clinical settings is a

  5. Goodness-of-fit tests in mixed models

    KAUST Repository

    Claeskens, Gerda

    2009-05-12

    Mixed models, with both random and fixed effects, are most often estimated on the assumption that the random effects are normally distributed. In this paper we propose several formal tests of the hypothesis that the random effects and/or errors are normally distributed. Most of the proposed methods can be extended to generalized linear models where tests for non-normal distributions are of interest. Our tests are nonparametric in the sense that they are designed to detect virtually any alternative to normality. In case of rejection of the null hypothesis, the nonparametric estimation method that is used to construct a test provides an estimator of the alternative distribution. © 2009 Sociedad de Estadística e Investigación Operativa.

  6. 20 CFR 404.989 - Good cause for reopening.

    Science.gov (United States)

    2010-04-01

    ...) The evidence that was considered in making the determination or decision clearly shows on its face... 20 Employees' Benefits 2 2010-04-01 2010-04-01 false Good cause for reopening. 404.989 Section 404.989 Employees' Benefits SOCIAL SECURITY ADMINISTRATION FEDERAL OLD-AGE, SURVIVORS AND DISABILITY...

  7. Economic Impact Assessment of Wind Power Integration: A Quasi-Public Goods Property Perspective

    Directory of Open Access Journals (Sweden)

    Huiru Zhao

    2015-08-01

    Full Text Available The integration of wind power into power grid will bring some impacts on the multiple subjects of electric power system. Economic impacts of wind power integration on multiple subjects of China’s electric power system were quantitatively assessed from Quasi-public goods property perspective in this paper. Firstly, the Quasi-public goods property of transmission services provided by power grid corporations was elaborated. Secondly, the multiple subjects of China’s electric power system, which include electricity generation enterprises (EGEs, power grid corporations (PGCs, electricity consumers (ECs, and environment, were detailed analyzed. Thirdly, based on the OPF-based nodal price model and transmission service cost allocation model, the economic impact assessment model of wind power integration was built from Quasi-public goods property perspective. Then, the IEEE-24 bus system employed in this paper was introduced according to current status of China’s electric power system, and the modeling of wind turbine was also introduced. Finally, the simulation analysis was performed, and the economic impacts of wind power integration on EGEs, PGCs, ECs and Environment were calculated. The results indicate, from Quasi-public goods property perspective, the wind power integration will bring positive impacts on EGEs, PGCs and Environment, while negative impacts on ECs. The findings can provide references for power system managers, energy planners, and policy makers.

  8. Cyclic public goods games: Compensated coexistence among mutual cheaters stabilized by optimized penalty taxation

    Science.gov (United States)

    Griffin, Christopher; Belmonte, Andrew

    2017-05-01

    We study the problem of stabilized coexistence in a three-species public goods game in which each species simultaneously contributes to one public good while freeloading off another public good ("cheating"). The proportional population growth is governed by an appropriately modified replicator equation, depending on the returns from the public goods and the cost. We show that the replicator dynamic has at most one interior unstable fixed point and that the population becomes dominated by a single species. We then show that by applying an externally imposed penalty, or "tax" on success can stabilize the interior fixed point, allowing for the symbiotic coexistence of all species. We show that the interior fixed point is the point of globally minimal total population growth in both the taxed and untaxed cases. We then formulate an optimal taxation problem and show that it admits a quasilinearization, resulting in novel necessary conditions for the optimal control. In particular, the optimal control problem governing the tax rate must solve a certain second-order ordinary differential equation.

  9. KEEFEKTIFAN MODEL SHOW NOT TELL DAN MIND MAP PADA PEMBELAJARAN MENULIS TEKS EKSPOSISI BERDASARKAN MINAT PESERTA DIDIK KELAS X SMK

    Directory of Open Access Journals (Sweden)

    Wiwit Lili Sokhipah

    2015-03-01

    Full Text Available Tujuan penelitian ini adalah (1 menentukan keefektifan penggunaan model show not tell pada pembelajaran keterampilan menulis teks eksposisi berdasarkan minat peserta didik SMK Kelas X, (2 menentukan keefektifan penggunaan model mind map pada pembelajaran keterampilan menulis teks eksposisi berdasarkan minat peserta didik SMK kelas X, (3 menentukan keefektifan interaksi show not tell dan mind map pada pembelajaran keterampilan menulis teks eksposisi berdasarkan minat peserta didik SMK kelas X. Penelitian ini adalah quasi experimental design (pretes-postes control group design. Dalam desain ini terdapat dua kelompok eksperimen yakni penerapan model show not tell dalam pembelajaran keterampilan menulis teks eksposisipeserta didik dengan minat tinggi dan penerapan model mind map dalam pembelajaran keterampilan menulis teks eksposisi  peserta didik dengan minat rendah. Hasil penelitian adalah (1 model show not tell efektif digunakan  dalam membelajarkan menulis teks eksposisi bagi peserta didik yang memiliki minat tinggi, (2 model mind map efektif digunakan dalam membelajarkan menulis teks eksposisi bagi peserta didik yang memiliki minat rendah, dan (3 model show not tell lebih efektif digunakan dalam membelajarkan menulis teks eksposisi bagi peserta didik yang memiliki minat tinggi, sedangkan model mind map efektif digunakan dalam membelajarkan teks eksposisi pagi peserta didik yang memiliki minat rendah.

  10. Good Concrete Activity Is Good Mental Activity

    Science.gov (United States)

    McDonough, Andrea

    2016-01-01

    Early years mathematics classrooms can be colourful, exciting, and challenging places of learning. Andrea McDonough and fellow teachers have noticed that some students make good decisions about using materials to assist their problem solving, but this is not always the case. These experiences lead her to ask the following questions: (1) Are…

  11. Quantum chi-squared and goodness of fit testing

    Energy Technology Data Exchange (ETDEWEB)

    Temme, Kristan [IQIM, California Institute of Technology, Pasadena, California 91125 (United States); Verstraete, Frank [Fakultät für Physik, Universität Wien, Boltzmanngasse 5, 1090 Wien, Austria and Faculty of Science, Ghent University, B-9000 Ghent (Belgium)

    2015-01-15

    A quantum mechanical hypothesis test is presented for the hypothesis that a certain setup produces a given quantum state. Although the classical and the quantum problems are very much related to each other, the quantum problem is much richer due to the additional optimization over the measurement basis. A goodness of fit test for i.i.d quantum states is developed and a max-min characterization for the optimal measurement is introduced. We find the quantum measurement which leads both to the maximal Pitman and Bahadur efficiencies, and determine the associated divergence rates. We discuss the relationship of the quantum goodness of fit test to the problem of estimating multiple parameters from a density matrix. These problems are found to be closely related and we show that the largest error of an optimal strategy, determined by the smallest eigenvalue of the Fisher information matrix, is given by the divergence rate of the goodness of fit test.

  12. Cooperation and Noise in Public Goods Experiments: Applying the Contribution Function Approach

    NARCIS (Netherlands)

    Brandts, J.; Schram, A.

    2001-01-01

    We introduce a new design for experiments with the voluntary contributions mechanism for public goods. Subjects report a complete con-tri-bution function in each period, i.e., a contribution level for various marginal rates of transformation between a public and a private good. The results show that

  13. Effect of the depreciation of public goods in spatial public goods games

    Science.gov (United States)

    Shi, Dong-Mei; Zhuang, Yong; Wang, Bing-Hong

    2012-02-01

    In this work, the depreciation effect of public goods is considered in the public goods games, which is realized by rescaling the multiplication factor r of each group as r‧=r( (β≥0). It is assumed that each individual enjoys the full profit r of the public goods if all the players of this group are cooperators. Otherwise, the value of public goods is reduced to r‧. It is found that compared with the original version (β=0), the emergence of cooperation is remarkably promoted for β>0, and there exist intermediate values of β inducing the best cooperation. Particularly, there exists a range of β inducing the highest cooperative level, and this range of β broadens as r increases. It is further presented that the variation of cooperator density with noise has close relations with the values of β and r, and cooperation at an intermediate value of β=1.0 is most tolerant to noise.

  14. Tokyo Motor Show 2003; Tokyo Motor Show 2003

    Energy Technology Data Exchange (ETDEWEB)

    Joly, E.

    2004-01-01

    The text which follows present the different techniques exposed during the 37. Tokyo Motor Show. The report points out the great tendencies of developments of the Japanese automobile industry. The hybrid electric-powered vehicles or those equipped with fuel cells have been highlighted by the Japanese manufacturers which allow considerable budgets in the research of less polluting vehicles. The exposed models, although being all different according to the manufacturer, use always a hybrid system: fuel cell/battery. The manufacturers have stressed too on the intelligent systems for navigation and safety as well as on the design and comfort. (O.M.)

  15. Abusing Good Intentions

    Directory of Open Access Journals (Sweden)

    Tamas Bereczkei

    2015-06-01

    Full Text Available The present study aims to understand how Machiavellians switch from one kind of response to another in different circumstances to maximize their profit. We set up a specific experimental paradigm that involved both a cooperative and competitive version of a public goods game. We found that Machiavellianism accounts for the total amount of money paid by the players (N = 144 across five rounds in the cooperative but not in the competitive game. Compared with the others, individuals with higher scores on Mach scale contributed less to the public goods in the cooperative condition, but no difference was found in the competitive condition. Finally, this relationship was influenced by the sequence of the games. These results indicate that Machiavellians skillfully evaluate social environments and strive to exploit those with abundant contributions to public goods.

  16. The good midwife: commencing students' views.

    Science.gov (United States)

    Carolan, Mary

    2011-08-01

    to explore commencing students' views of the good midwife. This study was set against a background of high course attrition and concerns that discordant students' views of midwifery practice may have been associated with course attrition. qualitative thematic analysis. Melbourne, Australia. all commencing midwifery students, in 2008, were invited to participate (n = 41). students spoke of a series of key attributes they felt were important to the role of the midwife. Most fell into the affective domain and four themes were identified: personal qualities and attitudes; a belief in women and natural birth; compatible work ethic; and the possession of additional attributes. commencing students showed a clear understanding of the affective attributes required of a good midwife but a lesser understanding of requirements of knowledge and competence. A small number of students felt that they were already equipped to advise pregnant women, despite their early stage in the course. This is an issue that needs to be addressed. Copyright © 2010 Elsevier Ltd. All rights reserved.

  17. Predictive Models, How good are they?

    DEFF Research Database (Denmark)

    Kasch, Helge

    The WAD grading system has been used for more than 20 years by now. It has shown long-term viability, but with strengths and limitations. New bio-psychosocial assessment of the acute whiplash injured subject may provide better prediction of long-term disability and pain. Furthermore, the emerging......-up. It is important to obtain prospective identification of the relevant risk underreported disability could, if we were able to expose these hidden “risk-factors” during our consultations, provide us with better predictive models. New data from large clinical studies will present exciting new genetic risk markers...

  18. Analysis and evaluation for consumer goods containing NORM in Korea.

    Science.gov (United States)

    Jang, Mee; Chung, Kun Ho; Lim, Jong Myoung; Ji, Young Yong; Kim, Chang Jong; Kang, Mun Ja

    2017-08-01

    We analyzed the consumer goods containing NORM by ICP-MS and evaluated the external dose. To evaluate the external dose, we assumed the small room model as irradiation scenario and calculated the specific effective dose rate using MCNPX code. The external doses for twenty goods are less than 1 mSv considering the specific effective dose rates and usage quantities. However, some of them have relatively high dose and the activity concentration limits are necessary as a screening tool. Copyright © 2017 Elsevier Ltd. All rights reserved.

  19. Global Public Goods and The Role of Emerging Power: Considering the Concept of Impure Public Goods

    Directory of Open Access Journals (Sweden)

    Liu Rieshøj Yi

    2016-12-01

    Full Text Available The existing analysis of global public goods over-emphasizes the significance of public. Great power as a main provider has played an active role in these strategic initiatives, which may be ignored. In fact, main power has thought about the possible free-riders when providing public goods and making its foreign strategic plan. China’s announcement to “welcome the neighbouring countries to be a free-rider and benefit from China’s rise” is a good example. It is necessary to think about the theory of public goods and take another look at the free-riding phenomenon. The concept of impure public goods may be useful and effective when we understand the reason why global public goods are being provided and are relatively efficient. As an emerging power, China should have a clear strategy on global public goods with a possible “marketing” viewpoint, including more initiatives and specific measures, so that the global public goods provision may be more diverse and well-planned.

  20. THE SELLER'S OBLIGATION TO DELIVER THE GOODS ACCORDING TO CISG

    Directory of Open Access Journals (Sweden)

    Dan VELICU

    2017-05-01

    Full Text Available This article aims to analyze the seller's obligations under the Convention on International Sale of Goods (CISG and in particular the obligation to deliver the goods showing the main issues that arise in an international sale. We also wish to point the major innovations or improvements brought by the CISG in comparison to the European civil codes regulation and to conclude if the CSIG managed to revolutionize the tradition view on this issue.

  1. Good News in Bad News: How Negativity Enhances Economic Efficacy

    OpenAIRE

    Svensson, H.M.; Albæk, E.; van Dalen, A.; de Vreese, C.

    2017-01-01

    Negativity is a news ideology, and its negative effects on attitude formation are widely documented. Contrary to this view, the present study demonstrates that negative economic news can in fact be good news. Based on a two-wave national panel survey and a media content analysis, we show that individual exposure to negative economic news enhances internal economic efficacy, a sense of competence in and understanding of the economy. This is good news as internal economic efficacy may facilitat...

  2. Benchmark Two-Good Utility Functions

    NARCIS (Netherlands)

    de Jaegher, K.

    Benchmark two-good utility functions involving a good with zero income elasticity and unit income elasticity are well known. This paper derives utility functions for the additional benchmark cases where one good has zero cross-price elasticity, unit own-price elasticity, and zero own price

  3. ON A COURNOT DUOPOLY GAME WITH DIFFERENTIATED GOODS, HETEROGENEOUS EXPECTATIONS AND A COST FUNCTION INCLUDING EMISSION COSTS

    Directory of Open Access Journals (Sweden)

    Georges SARAFOPOULOS

    2017-07-01

    Full Text Available In this study we investigate the dynamics of a nonlinear Cournot- type duopoly game with differentiated goods, linear demand and a cost function that includes emission costs. The game is modeled with a system of two difference equations. Existence and stability of equilibria of this system are studied. We show that the model gives more complex chaotic and unpredictable trajectories as a consequence of change in the parameter of horizontal product differentiation and a higher (lower degree of product differentiation (weaker or fiercer competition destabilize (stabilize the economy. The chaotic features are justified numerically via computing Lyapunov numbers and sensitive dependence on initial conditions. Also, we show that in this case there are stable trajectories and a higher (lower degree of product differentiation does not tend to destabilize the economy.

  4. Doing Good, Feeling Bad

    DEFF Research Database (Denmark)

    Sharma, Devika

    2017-01-01

    For decades humanitarianism has captured and shaped the dreams of the populations of the global North, dreams of a better world, of a common humanity, of goodness, of solidarity, and of global healing. In this article I argue that when taking art and cultural objects into account humanitarian......, Danmarks Indsamling [Denmark Collects], and the second is from Norwegian playwright Arne Lygre’s 2011 play, I Disappear. What is at stake in both of these scenes is the status of humanitarianism as a good-enough fantasy and promise of doing good....

  5. Design of a robotic automation system for transportation of goods in hospitals

    DEFF Research Database (Denmark)

    Özkil, Ali Gürcan; Sørensen, Torben; Fan, Zhun

    2007-01-01

    Hospitals face with heavy traffic of goods everyday, where transportation tasks are mainly carried by human. Analysis of the current situation of transportation in a typical hospital showed several transportation tasks are suitable for automation. This paper presents a system, consisting of a fleet...... of robot vehicles, automatic stations and smart containers for automation of transportation of goods in hospitals. Design of semi-autonomous robot vehicles, containers and stations are presented and the overall system architecture is described. Implementing such a system in an existing hospital showed...

  6. Goodness-of-fit tests in mixed models

    KAUST Repository

    Claeskens, Gerda; Hart, Jeffrey D.

    2009-01-01

    Mixed models, with both random and fixed effects, are most often estimated on the assumption that the random effects are normally distributed. In this paper we propose several formal tests of the hypothesis that the random effects and/or errors

  7. When being narrow minded is a good thing: locally biased people show stronger contextual cueing.

    Science.gov (United States)

    Bellaera, Lauren; von Mühlenen, Adrian; Watson, Derrick G

    2014-01-01

    Repeated contexts allow us to find relevant information more easily. Learning such contexts has been proposed to depend upon either global processing of the repeated contexts, or alternatively processing of the local region surrounding the target information. In this study, we measured the extent to which observers were by default biased to process towards a more global or local level. The findings showed that the ability to use context to help guide their search was strongly related to an observer's local/global processing bias. Locally biased people could use context to help improve their search better than globally biased people. The results suggest that the extent to which context can be used depends crucially on the observer's attentional bias and thus also to factors and influences that can change this bias.

  8. STRATEGIC ALIGNMENT THROUGH COMPETITIVE PRIORITIES IN CAPITAL GOODS COMPANIES

    Directory of Open Access Journals (Sweden)

    Prof. Dr. Roberto Giro Moori

    2014-08-01

    Full Text Available The purpose of this paper is to ascertain the strategic alignment of companies producing capital goods and deploying competitive priorities, from the standpoint of dyadic relationships.  To collect the data, semi-structured questionnaires were used for a sample consisting of 113 respondents from 87 companies producing capital goods, all operating in Brazil. The data were analyzed using non-parametric statistical techniques. More specifically, an analysis of Kendall’s coefficient of concordance (W showed that product (or component price and performance are the main competitive priorities for companies in this sector. Thus, evidence was found that companies producing capital goods are strategically aligned from the standpoint of dyadic relationships with their suppliers and customers, with price being the main criterion, depending on the downstream focus of the company, through the performance of the product (or component.

  9. Attitudes of Consumers from Podgorica toward Advertising through Sport among the Question how often Consumers purchase Sporting Goods

    Directory of Open Access Journals (Sweden)

    Vladimir Djurisic

    2018-04-01

    Full Text Available This research was aimed at gaining relevant knowledge about the attitudes of Podgorica consumers toward advertising through sport among the question how often consumers purchase sporting goods. The sample included 330 students from Faculty of Economics in Podgorica, divided into six subsample groups: consumers who do not purchase sport goods at all, then consumers who purchase sport goods less than ones a month, next 1–3 a month, 4–6 a month, 7–9 a month, as well as consumers who purchase sport goods more than 10 times a month. The sample of variables contained the system of three general attitudes which were modelled by seven-point Likert scale. The results of the measuring were analyzed by multivariate analysis (MANOVA and univariate analysis (ANOVA and Post Hoc test. Based on the statistical analyses it was found that significant differences occur at multivariate level, as well as between all three variables at a significance level of (p=.000. Hence, it is interesting to highlight that it was found there were significant differences showed up between the consumers who purchase sport goods. The significant differences were found in two of three variables, while the consumers who purchase sport goods less than 3 times a moths had much more negative attitudes toward advertising though sport.

  10. Sociocultural Transformation & Development. Good Practices or Successful Actions

    Directory of Open Access Journals (Sweden)

    Oriol Ríos

    2013-10-01

    Full Text Available The most disadvantadged neighborhoods in Europe have received funds from State Administration to eradicate social exclusion and overcome processes of urban ghettoization. These processes are being implemented in several social areas such as housing, employment, and education. Actions, defined as "good practices", are usually valued by the quantity and type and not by the quality and final outcomes they achieve. For example, when they improve the living conditions of the populations in these areas. The INCLUD-ED project shows positive results by replacing these "good practices" by "successful actions". They are grounded on scientific evidence in order to respond to the aims set by the neighbours of these disadvantaged neighborhoods.

  11. Using Partial Differential Equations for Pricing of Goods and Services

    Directory of Open Access Journals (Sweden)

    Traykov Metodi

    2016-06-01

    Full Text Available This article is based on the methodology of comparative analysis, using an innovative approach for pricing of various goods and services. Benchmarking is the continuous search to find and adapt better pricing methods that leading to increased profits. We will consider the numerical solution of partial differential equations, based on Black-Scholes model for pricing of goods and services within European option. Also, we will present formulation and numerical behavior of explicit and implicit methods that can be use in pricing for company assets within European option.

  12. Sociality as a natural mechanism of public goods provision.

    Directory of Open Access Journals (Sweden)

    Elliot T Berkman

    Full Text Available In the recent literature, several hypotheses have been offered to explain patterns of human behavior in social environments. In particular, these patterns include 'prosocial' ones, such as fairness, cooperation, and collective good provision. Psychologists suggest that these prosocial behaviors are driven not by miscalculations, but by salience of social identity, in-group favoritism, emotion, or evolutionary adaptations. This paper imports psychology scholarship into an economic model and results in a sustainable solution to collective action problems without any external enforcement mechanisms. This natural mechanism of public goods provision is created, analyzed, and observed in a controlled laboratory environment using experimental techniques.

  13. Models of non-relativistic quantum gravity: the good, the bad and the healthy

    CERN Document Server

    Blas, Diego; Sibiryakov, Sergey

    2011-01-01

    Horava's proposal for non-relativistic quantum gravity introduces a preferred time foliation of space-time which violates the local Lorentz invariance. The foliation is encoded in a dynamical scalar field which we call `khronon'. The dynamics of the khronon field is sensitive to the symmetries and other details of the particular implementations of the proposal. In this paper we examine several consistency issues present in three non-relativistic gravity theories: Horava's projectable theory, the healthy non-projectable extension, and a new extension related to ghost condensation. We find that the only model which is free from instabilities and strong coupling is the non-projectable one. We elaborate on the phenomenology of the latter model including a discussion of the couplings of the khronon to matter. In particular, we obtain the parameters of the post-Newtonian expansion in this model and show that they are compatible with current observations.

  14. Chasing passive galaxies in the early Universe: a critical analysis in CANDELS GOODS-South

    Science.gov (United States)

    Merlin, E.; Fontana, A.; Castellano, M.; Santini, P.; Torelli, M.; Boutsia, K.; Wang, T.; Grazian, A.; Pentericci, L.; Schreiber, C.; Ciesla, L.; McLure, R.; Derriere, S.; Dunlop, J. S.; Elbaz, D.

    2018-01-01

    We search for passive galaxies at z > 3 in the GOODS-South field, using different techniques based on photometric data, and paying attention to develop methods that are sensitive to objects that have become passive shortly before the epoch of observation. We use CANDELS HST catalogues, ultra-deep Ks data and new IRAC photometry, performing spectral energy distribution fitting using models with abruptly quenched star formation histories. We then single out galaxies which are best fitted by a passively evolving model, and having only low probability (detection limit. However, we conclude that the selection of passive galaxies at z > 3 is still subject to significant uncertainties, being sensitive to assumptions in the SED modelling adopted and to the relatively low S/N of the objects. By means of dedicated simulations, we show that JWST will greatly enhance the accuracy, allowing for a much more robust classification.

  15. Advice on Good Grooming.

    Science.gov (United States)

    Tingey, Carol

    1987-01-01

    Suggestions are presented from parents on how to help children with disabilities (with particular focus on Downs Syndrome) learn good grooming habits in such areas as good health, exercise, cleanliness, teeth and hair care, skin care, glasses and other devices, and social behavior. (CB)

  16. TRANSPORT OF COUNTERFEIT GOODS

    Directory of Open Access Journals (Sweden)

    Dagmar Babčanová

    2014-09-01

    Full Text Available The paper is focused on a current problem of transport of counterfeit goods in the European Union. Counterfeiting has a strong influence on the distribution organizations worldwide because most of counterfeit goods threaten the health and safety of consumers. Counterfeiting is a serious problem in the world economy today. The purpose of this paper is to point out the danger of counterfeiting in connection with the transport of Intellectual Property (IP rights - infringing goods. Background of the paper’s content is based on secondary data research of publicly available sources - international statistics and world reports.

  17. In search of the good life: a cultural odyssey in the East and West.

    Science.gov (United States)

    Ng, Aik Kwang; Ho, David Y F; Wong, Shyh Shin; Smith, Ian

    2003-11-01

    In the first part of this article, the authors argue that any conception of well-being is culturally embedded and depends on how the notions of "well" and "being" are defined and practiced in different cultural communities. To support this argument, they conduct a comprehensive review of the empirical literature, which shows that members of individualistic and collectivistic cultures differ in their emotional experience of well-being. This difference has been traced to the indigenous psychology of selfhood in those cultures. In the second part of the article, the authors debunk the myth of infinite cultural variability, while retaining the basic insight concerning the cultural constitution of well-being. They develop a theoretical model of well-being, in which agency and communion are universal dimensions of well-being, and people in different cultures require different combinations of agency and communion to experience well-being. Following this theoretical development, the authors examine cultural impediments to the good life in individualistic and collectivistic cultures. The mutual incompatibility of agency and communion is ruled out as a possible cause of why it is so difficult to live the good life. Instead, the authors propose a dialectical synthesis of agency and communion as a way of dealing with this challenge of living the good life.

  18. An overview of GOOD

    NARCIS (Netherlands)

    Paredaens, J.; Van den Bussche, J.; Andries, M.; Gemis, M.; Gyssens, M.; Thyssens, I.; Van Gucht, D.; Sarathy, V.; Saxton, L.V.

    1992-01-01

    GOOD is an acronym, standing for Graph-Oriented Object Database. GOOD is being developed as a joint research effort of Indiana University and the University of Antwerp. The main thrust behind the project is to indicate general concepts that are fundamental to any graph-oriented database

  19. The Public Goods Hypothesis for the evolution of life on Earth.

    Science.gov (United States)

    McInerney, James O; Pisani, Davide; Bapteste, Eric; O'Connell, Mary J

    2011-08-23

    It is becoming increasingly difficult to reconcile the observed extent of horizontal gene transfers with the central metaphor of a great tree uniting all evolving entities on the planet. In this manuscript we describe the Public Goods Hypothesis and show that it is appropriate in order to describe biological evolution on the planet. According to this hypothesis, nucleotide sequences (genes, promoters, exons, etc.) are simply seen as goods, passed from organism to organism through both vertical and horizontal transfer. Public goods sequences are defined by having the properties of being largely non-excludable (no organism can be effectively prevented from accessing these sequences) and non-rival (while such a sequence is being used by one organism it is also available for use by another organism). The universal nature of genetic systems ensures that such non-excludable sequences exist and non-excludability explains why we see a myriad of genes in different combinations in sequenced genomes. There are three features of the public goods hypothesis. Firstly, segments of DNA are seen as public goods, available for all organisms to integrate into their genomes. Secondly, we expect the evolution of mechanisms for DNA sharing and of defense mechanisms against DNA intrusion in genomes. Thirdly, we expect that we do not see a global tree-like pattern. Instead, we expect local tree-like patterns to emerge from the combination of a commonage of genes and vertical inheritance of genomes by cell division. Indeed, while genes are theoretically public goods, in reality, some genes are excludable, particularly, though not only, when they have variant genetic codes or behave as coalition or club goods, available for all organisms of a coalition to integrate into their genomes, and non-rival within the club. We view the Tree of Life hypothesis as a regionalized instance of the Public Goods hypothesis, just like classical mechanics and euclidean geometry are seen as regionalized

  20. The public goods hypothesis for the evolution of life on Earth

    LENUS (Irish Health Repository)

    McInerney, James O

    2011-08-23

    Abstract It is becoming increasingly difficult to reconcile the observed extent of horizontal gene transfers with the central metaphor of a great tree uniting all evolving entities on the planet. In this manuscript we describe the Public Goods Hypothesis and show that it is appropriate in order to describe biological evolution on the planet. According to this hypothesis, nucleotide sequences (genes, promoters, exons, etc.) are simply seen as goods, passed from organism to organism through both vertical and horizontal transfer. Public goods sequences are defined by having the properties of being largely non-excludable (no organism can be effectively prevented from accessing these sequences) and non-rival (while such a sequence is being used by one organism it is also available for use by another organism). The universal nature of genetic systems ensures that such non-excludable sequences exist and non-excludability explains why we see a myriad of genes in different combinations in sequenced genomes. There are three features of the public goods hypothesis. Firstly, segments of DNA are seen as public goods, available for all organisms to integrate into their genomes. Secondly, we expect the evolution of mechanisms for DNA sharing and of defense mechanisms against DNA intrusion in genomes. Thirdly, we expect that we do not see a global tree-like pattern. Instead, we expect local tree-like patterns to emerge from the combination of a commonage of genes and vertical inheritance of genomes by cell division. Indeed, while genes are theoretically public goods, in reality, some genes are excludable, particularly, though not only, when they have variant genetic codes or behave as coalition or club goods, available for all organisms of a coalition to integrate into their genomes, and non-rival within the club. We view the Tree of Life hypothesis as a regionalized instance of the Public Goods hypothesis, just like classical mechanics and euclidean geometry are seen as

  1. Tolerance-based punishment in continuous public goods game

    Science.gov (United States)

    Gao, Jia; Li, Zhi; Cong, Rui; Wang, Long

    2012-08-01

    Altruistic punishment for defectors is considered as a key motive for the explanation of cooperation. However, there is no clear border between the cooperative and defective behaviors in a continuous strategy game. We propose a model to study the effect of punishment on the evolution of cooperation in continuous public goods game, wherein individuals have the traits to punish the co-players based on social tolerance. We show that a reasonable punishment with a uniform tolerance can spur individuals to make more investments. Additionally, for a fixed punishment cost and a fixed fine, a moderate value of tolerance can result in the best promotion of cooperation. Furthermore, we investigate the coevolutionary dynamics of investment and tolerance. We find that the population splits into two branches: high-tolerance individuals who make high investments and low-tolerance individuals who make low investments. A dynamic equilibrium is achieved between these two types of individuals. Our work extends punishment to continuous cooperative behaviors and the results may enhance the understanding of altruistic punishment in the evolution of human cooperation.

  2. Behavioral Patterns in Special Education. Good Teaching Practices.

    Science.gov (United States)

    Rodríguez-Dorta, Manuela; Borges, África

    2017-01-01

    Providing quality education means to respond to the diversity in the classroom. The teacher is a key figure in responding to the various educational needs presented by students. Specifically, special education professionals are of great importance as they are the ones who lend their support to regular classroom teachers and offer specialized educational assistance to students who require it. Therefore, special education is different from what takes place in the regular classroom, demanding greater commitment by the teacher. There are certain behaviors, considered good teaching practices, which teachers have always been connected with to achieve good teaching and good learning. To ensure that these teachers are carrying out their educational work properly it is necessary to evaluate. This means having appropriate instruments. The Observational Protocol for Teaching Functions in Primary School and Special Education (PROFUNDO-EPE, v.3., in Spanish) allows to capture behaviors from these professionals and behavioral patterns that correspond to good teaching practices. This study evaluates the behavior of two special education teachers who work with students from different educational stages and educational needs. It reveals that the analyzed teachers adapt their behavior according the needs and characteristics of their students to the students responding more adequately to the needs presented by the students and showing good teaching practices. The patterns obtained indicate that they offer support, help and clear guidelines to perform the tasks. They motivate them toward learning by providing positive feedback and they check that students have properly assimilated the contents through questions or non-verbal supervision. Also, they provide a safe and reliable climate for learning.

  3. Survivors of cardiac arrest with good neurological outcome show considerable impairments of memory functioning.

    Science.gov (United States)

    Sulzgruber, Patrick; Kliegel, Andreas; Wandaller, Cosima; Uray, Thomas; Losert, Heidrun; Laggner, Anton N; Sterz, Fritz; Kliegel, Matthias

    2015-03-01

    Deficits in cognitive function are a well-known dysfunction in survivors of cardiac arrest. However, data concerning memory function in this neurological vulnerable patient collective remain scarce and inconclusive. Therefore, we aimed to assess multiple aspects of retrospective and prospective memory performance in patients after cardiac arrest. We prospectively enrolled 33 survivors of cardiac arrest, with cerebral performance categories (CPC) 1 and 2 and a control-group (n=33) matched in sex, age and educational-level. To assess retrospective and prospective memory performance we administrated 4 weeks after cardiac arrest the "Rey Adult Learning Test" (RAVLT), the "Digit-Span-Backwards Test", the "Logic-Memory Test" and the "Red-Pencil Test". Results indicate an impairment in immediate and delayed free recall, but not in recognition. However, the overall impairment in immediate recall was qualified by analyzing RAVLT performance, showing that patients were only impaired in trials 4 and 5 of the learning sequence. Moreover, working and prospective memory as well as prose recall were worse in cardiac arrest survivors. Cranial computed tomography was available in 61% of all patients (n=20) but there was no specific neurological damage detectable that could be linked to this cognitive impairment. Episodic long-term memory functioning appears to be particularly impaired after cardiac arrest. In contrast, short-term memory storage, even tested via free-call, seems not to be affected. Based on cranial computed tomography we suggest that global brain ischemia rather than focal brain lesions appear to underlie these effects. Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.

  4. Transportation of hazardous goods

    CERN Multimedia

    TS Department

    2008-01-01

    A general reminder: any transportation of hazardous goods by road is subject to the European ADR rules. The goods concerned are essentially the following: Explosive substances and objects; Gases (including aerosols and non-flammable gases such as helium and nitrogen); Flammable substances and liquids (inks, paints, resins, petroleum products, alcohols, acetone, thinners); Toxic substances (acids, thinners); Radioactive substances; Corrosive substances (paints, acids, caustic products, disinfectants, electrical batteries). Any requests for the transport of hazardous goods must be executed in compliance with the instructions given at this URL: http://ts-dep.web.cern.ch/ts-dep/groups/he/HH/adr.pdf Heavy Handling Section TS-HE-HH 73793 - 160364

  5. Incremental Design of Perishable Goods Markets through Multi-Agent Simulations

    Directory of Open Access Journals (Sweden)

    Kazuo Miyashita

    2017-12-01

    Full Text Available In current markets of perishable goods such as fish and vegetables, sellers are typically in a weak bargaining position, since perishable products cannot be stored for long without losing their value. To avoid the risk of spoiling products, sellers have few alternatives other than selling their goods at the prices offered by buyers in the markets. The market mechanism needs to be reformed in order to resolve unfairness between sellers and buyers. Double auction markets, which collect bids from both sides of the trades and match them, allow sellers to participate proactively in the price-making process. However, in perishable goods markets, sellers have an incentive to discount their bid gradually for fear of spoiling unsold goods. Buyers can take advantage of sellers’ discounted bids to increase their profit by strategic bidding. To solve the problem, we incrementally improve an online double auction mechanism for perishable goods markets, which promotes buyers’ truthful bidding by penalizing their failed bids without harming their individual rationality. We evaluate traders’ behavior under several market conditions using multi-agent simulations and show that the developed mechanism achieves fair resource allocation among traders.

  6. CHRODIS criteria applied to the MASK (MACVIA-ARIA Sentinel NetworK) Good Practice in allergic rhinitis

    DEFF Research Database (Denmark)

    Bousquet, J; Onorato, G L; Bachert, C

    2017-01-01

    A Good Practice is a practice that works well, produces good results, and is recommended as a model. MACVIA-ARIA Sentinel Network (MASK), the new Allergic Rhinitis and its Impact on Asthma (ARIA) initiative, is an example of a Good Practice focusing on the implementation of multi-sectoral care pa...

  7. The global public good concept: a means of promoting good veterinary governance.

    Science.gov (United States)

    Eloit, M

    2012-08-01

    At the outset, the concept of a 'public good' was associated with economic policies. However, it has now evolved not only from a national to a global concept (global public good), but also from a concept applying solely to the production of goods to one encompassing societal issues (education, environment, etc.) and fundamental rights, including the right to health and food. Through their actions, Veterinary Services, as defined by the Terrestrial Animal Health Code (Terrestrial Code) of the World Organisation for Animal Health (OIE), help to improve animal health and reduce production losses. In this way they contribute directly and indirectly to food security and to safeguarding human health and economic resources. The organisation and operating procedures of Veterinary Services are therefore key to the efficient governance required to achieve these objectives. The OIE is a major player in global cooperation and governance in the fields of animal and public health through the implementation of its strategic standardisation mission and other programmes for the benefit of Veterinary Services and OIE Member Countries. Thus, the actions of Veterinary Services and the OIE deserve to be recognised as a global public good, backed by public investment to ensure that all Veterinary Services are in a position to apply the principles of good governance and to comply with the international standards for the quality of Veterinary Services set out in the OIE Terrestrial Code (Section 3 on Quality of Veterinary Services) and Aquatic Animal Health Code (Section 3 on Quality of Aquatic Animal Health Services).

  8. Efficacy, Beliefs, and Investment in Step-Level Public Goods

    NARCIS (Netherlands)

    Dijkstra, Jacob; Mulders, Jaap Oude

    2014-01-01

    A central concept for understanding social dilemma behavior is the efficacy of an actor's cooperative behavior in terms of increasing group well-being. We report a decision and game theoretical analysis of efficacy in step-level public goods (SPGs). Previous research shows a positive relation

  9. Counting Dropout Rate of Consumers of Durable Goods | Akomolafe ...

    African Journals Online (AJOL)

    This research work attempts to predict the percentage of customers' churn of less than 10% using the data of some packaged goods that were collected within a specific period. The computational experience provides a string statistical evidence (p-value = 0.9928) for the use of proposed beta-binominal models as an ...

  10. Monitoring Dangerous Goods in Container Yard Using the Internet of Things

    Directory of Open Access Journals (Sweden)

    Lianhong Ding

    2016-01-01

    Full Text Available The Internet of Things (IoT, a network of objects, has been regarded as the next revolution for the global information industry after the Internet. With IoT, many intelligent applications can be accomplished or improved. This paper presents a framework for dangerous goods management in container yard using IoT technology. The framework consists of three layers: perceptual layer, transport layer, and application layer. It offers an infrastructure for management and data analysis and utilization. According to the features of dangerous goods, the framework can be enhanced for container information forecast, container gate-in and gate-out management, environment parameters monitoring, and fire control as well. In order to verify our method, a prototype system is developed, which shows good performance. With our method, safe operation of dangerous goods in container yard can be accomplished.

  11. Paradoxes around good governance

    NARCIS (Netherlands)

    A.G. Dijkstra (Geske)

    2013-01-01

    textabstract Good governance is not a new concept Ambrogio Lorenzetti made his frescoes on good and bad governance already in the years 1338-1340 They can be viewed in the Palazzo Publicco on one of the most beautiful squares of the world, the Piazza del Campo in Siena, Italy I assume many of you

  12. "Act in Good Faith."

    Science.gov (United States)

    McKay, Robert B.

    1979-01-01

    It is argued that the Supreme Court's Bakke decision overturning the University of California's minority admissions program is good for those who favor affirmative action programs in higher education. The Supreme Court gives wide latitude for devising programs that take race and ethnic background into account if colleges are acting in good faith.…

  13. Still Searching: A Meta-Synthesis of a Good Death from the Bereaved Family Member Perspective

    Directory of Open Access Journals (Sweden)

    Kelly E. Tenzek

    2017-04-01

    Full Text Available The concept of a good death continues to receive attention in end-of-life (EOL scholarship. We sought to continue this line of inquiry related to a good death by conducting a meta-synthesis of published qualitative research studies that examined a good death from the bereaved family member’s perspective. Results of the meta-synthesis included 14 articles with 368 participants. Based on analysis, we present a conceptual model called The Opportunity Model for Presence during the EOL Process. The model is framed in socio-cultural factors, and major themes include EOL process engagement with categories of healthcare participants, communication and practical issues. The second theme, (discontinuity of care, includes categories of place of care, knowledge of family member dying and moment of death. Both of these themes lead to perceptions of either a good or bad death, which influences the bereavement process. We argue the main contribution of the model is the ability to identify moments throughout the interaction where family members can be present to the EOL process. Recommendations for healthcare participants, including patients, family members and clinical care providers are offered to improve the quality of experience throughout the EOL process and limitations of the study are discussed.

  14. A regime showing anomalous triton burnup in JET

    International Nuclear Information System (INIS)

    Conroy, S.; Jarvis, O.N.; Sadler, G.; Pillon, M.

    1990-01-01

    Measurements of triton burnup made at JET in 1989 are in good agreement with a simple classical model of the triton slowing down, for the majority of discharges. For discharges with a long slowing down time (greater than 2 seconds), a much reduced burnup has been observed, suggesting that the tritons undergo diffusion with a diffusion constant of 0.10 m 2 s -1 . Also, the experimental 14 MeV neutron yield is 30% lower than expected for Beryllium limiter discharges. (author) 4 refs., 3 figs

  15. 42 CFR 93.210 - Good faith.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Good faith. 93.210 Section 93.210 Public Health... MISCONDUCT Definitions § 93.210 Good faith. Good faith as applied to a complainant or witness, means having a... allegation or cooperation with a research misconduct proceeding is not in good faith if made with knowing or...

  16. Efficacy, Beliefs, and Investment in Step-Level Public Goods

    NARCIS (Netherlands)

    Dijkstra, J.; Oude Mulders, J.

    2014-01-01

    behavior in terms of increasing group well-being. We report a decision and game theoretical analysis of efficacy in step-level public goods (SPGs). Previous research shows a positive relation between efficacy and contributions to SPGs and explains this relation by a purely motivational account. We

  17. 18 CFR 2.20 - Good faith requests for transmission services and good faith responses by transmitting utilities.

    Science.gov (United States)

    2010-04-01

    ... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Good faith requests for transmission services and good faith responses by transmitting utilities. 2.20 Section 2.20 Conservation of... Power Act § 2.20 Good faith requests for transmission services and good faith responses by transmitting...

  18. Conceptions of Good Teaching by Good Teachers: Case Studies from an Australian University

    Science.gov (United States)

    Duarte, Fernanda P.

    2013-01-01

    This paper contributes to the debate on what constitutes good teaching in early 21st Century higher education, through an examination of the experience of five outstanding lecturers from a business school in an Australian university. It is based on a qualitative study that explored their perceptions on what constitutes "good teaching".…

  19. Asymmetric News Effects on Volatility: Good vs. Bad News in Good vs. Bad Times

    OpenAIRE

    Laakkonen, Helinä; Lanne, Markku

    2008-01-01

    We study the impact of positive and negative macroeconomic US and European news announcements in different phases of the business cycle on the highfrequency volatility of the EUR/USD exchange rate. The results suggest that in general bad news increases volatility more than good news. The news effects also depend on the state of the economy: bad news increases volatility more in good times than in bad times, while there is no difference between the volatility effects of good news in bad and go...

  20. Reading comprehension and expressive writing: a comparison between good and poor comprehenders.

    Science.gov (United States)

    Carretti, Barbara; Re, Anna Maria; Arfè, Barbara

    2013-01-01

    This study investigated expressive writing in 8- to 10-year-old children with different levels of reading comprehension. Poor and good comprehenders were presented with three expressive writing tasks where the modality (pictorial vs. verbal) and the text genre (narrative vs. descriptive) varied. Results showed that poor comprehenders' performance was minimally influenced by the modality of the prompt. In fact, their performance was generally worse than that of good comprehenders and affected by the text genre, as the quality of their narratives was generally lower than that of good comprehenders. However, in the descriptive text condition, their performance was comparable to that of good comprehenders. One can conclude that their problems depend on the characteristics of the narrative text where coherence and causality are important elements.

  1. 'She sort of shines': midwives' accounts of 'good' midwifery and 'good' leadership.

    Science.gov (United States)

    Byrom, Sheena; Downe, Soo

    2010-02-01

    to explore midwives' accounts of the characteristics of 'good' leadership and 'good' midwifery. a phenomenological interview survey. Participants were asked about what made both good and poor midwives and leaders. two maternity departments within National Health Service trusts in the North West of England. qualified midwives, selected by random sampling stratified to encompass senior and junior grades. thematic analysis, carried out manually. ten midwives were interviewed. Sixteen codes and six sub-themes were generated. Across the responses, two clear dimensions (themes) were identified, relating on the one hand to aspects of knowledge, skill and competence (termed 'skilled competence'), and on the other hand to specific personality characteristics (termed 'emotional intelligence'). This study suggests that the ability to act knowledgeably, safely and competently was seen as a basic requirement for both clinical midwives and midwife leaders. The added element which made both the midwife and the leader 'good' was the extent of their emotional capability. this small-scale in-depth study could form the basis for hypothesis generation for larger scale work in this area in future. The findings offer some reinforcement for the potential applicability of theories of transformational leadership to midwifery management and practice. Copyright 2008 Elsevier Ltd. All rights reserved.

  2. Peer assessment of aviation performance: inconsistent for good reasons.

    Science.gov (United States)

    Roth, Wolff-Michael; Mavin, Timothy J

    2015-03-01

    Research into expertise is relatively common in cognitive science concerning expertise existing across many domains. However, much less research has examined how experts within the same domain assess the performance of their peer experts. We report the results of a modified think-aloud study conducted with 18 pilots (6 first officers, 6 captains, and 6 flight examiners). Pairs of same-ranked pilots were asked to rate the performance of a captain flying in a critical pre-recorded simulator scenario. Findings reveal (a) considerable variance within performance categories, (b) differences in the process used as evidence in support of a performance rating, (c) different numbers and types of facts (cues) identified, and (d) differences in how specific performance events affect choice of performance category and gravity of performance assessment. Such variance is consistent with low inter-rater reliability. Because raters exhibited good, albeit imprecise, reasons and facts, a fuzzy mathematical model of performance rating was developed. The model provides good agreement with observed variations. Copyright © 2014 Cognitive Science Society, Inc.

  3. Optimal provision of public goods with rank dependent expected utility

    OpenAIRE

    Eide, Erling

    2003-01-01

    In this paper the theory of rank-dependent expected utility (RDEU) is substituted for the theory of expected utility (EU) in a model of optimal provision of public goods. The substitution generalizes the Samuelson rule, previously modified to include deadweight loss and tax evasion loss.

  4. MARKET RESEARCH OF CARE GOODS FOR NEWBORNS AND FIRST YEAR CHILDREN

    Directory of Open Access Journals (Sweden)

    A. I. Ovod

    2015-01-01

    Full Text Available Comparative results of marketing research of care goods for newborns and first year children conducted in 2009 and 2014 showed that there were changes in the range of products and consumer preferences. The analysis revealed that the economic situation affected the determinants of choice in this category of goods and the location of purchasing. The findings should be considered by pharmaceutical companies in their procurement in order to improve their competitive position. 

  5. Microarray profiling shows distinct differences between primary tumors and commonly used preclinical models in hepatocellular carcinoma

    International Nuclear Information System (INIS)

    Wang, Weining; Iyer, N. Gopalakrishna; Tay, Hsien Ts’ung; Wu, Yonghui; Lim, Tony K. H.; Zheng, Lin; Song, In Chin; Kwoh, Chee Keong; Huynh, Hung; Tan, Patrick O. B.; Chow, Pierce K. H.

    2015-01-01

    Despite advances in therapeutics, outcomes for hepatocellular carcinoma (HCC) remain poor and there is an urgent need for efficacious systemic therapy. Unfortunately, drugs that are successful in preclinical studies often fail in the clinical setting, and we hypothesize that this is due to functional differences between primary tumors and commonly used preclinical models. In this study, we attempt to answer this question by comparing tumor morphology and gene expression profiles between primary tumors, xenografts and HCC cell lines. Hep G2 cell lines and tumor cells from patient tumor explants were subcutaneously (ectopically) injected into the flank and orthotopically into liver parenchyma of Mus Musculus SCID mice. The mice were euthanized after two weeks. RNA was extracted from the tumors, and gene expression profiling was performed using the Gene Chip Human Genome U133 Plus 2.0. Principal component analyses (PCA) and construction of dendrograms were conducted using Partek genomics suite. PCA showed that the commonly used HepG2 cell line model and its xenograft counterparts were vastly different from all fresh primary tumors. Expression profiles of primary tumors were also significantly divergent from their counterpart patient-derived xenograft (PDX) models, regardless of the site of implantation. Xenografts from the same primary tumors were more likely to cluster together regardless of site of implantation, although heat maps showed distinct differences in gene expression profiles between orthotopic and ectopic models. The data presented here challenges the utility of routinely used preclinical models. Models using HepG2 were vastly different from primary tumors and PDXs, suggesting that this is not clinically representative. Surprisingly, site of implantation (orthotopic versus ectopic) resulted in limited impact on gene expression profiles, and in both scenarios xenografts differed significantly from the original primary tumors, challenging the long

  6. Comparison of the performances of the CS model coil and the Good Joint SULTAN sample

    International Nuclear Information System (INIS)

    Wesche, Rainer; Herzog, Robert; Bruzzone, Pierluigi

    2008-01-01

    The relevance of short sample measurements in SULTAN for the prediction of the performance of the coils of the International Thermonuclear Experimental Reactor (ITER) is assessed using the case of the Nb 3 Sn high-field central solenoid model coil (CSMC) conductor, for which both coil performance and short sample SULTAN results (Good Joint (GJ) sample) are available. A least-squares fit procedure, based on a uniform current distribution among the strands and the Durham scaling relations for the field, temperature and strain dependences of the strand J c provides a thermal strain of -0.294% and a degradation factor of approximately 60% for the GJ sample. In the calculation of the voltage along Layer 1A of the CSMC the hoop stress and the variation of the magnetic field in the conductor cross-section were taken into account. The temperature profile, used in the calculations, is based on published temperature profiles and empirical relations between helium inlet and outlet temperatures. A comparison with the GJ results indicates that short sample measurements in SULTAN provide a conservative estimate of the coil performance

  7. INNOVATIONS IN POLISH SOCIAL ECONOMY. GOOD PRACTICES CAFE-BOOKSTORE ''COOPERATIVE”

    OpenAIRE

    Piotr Krośniak; Anna Szadkowska-Ciężka; Katarzyna Zabratańska

    2012-01-01

    The article is concentrating on the issue of the social economy and the presentation of good practice from Poland. For elaborating issues an example of the „Cooperative” was used. This is pioneering working on Polish scale which uses innovative actions for the counteraction of social exclusion. Brought up issues are alsoassociated with promotion of creating trilateral partnerships and development of the social franchise model. Presented model is the result of cooperation between UNDP Project ...

  8. Moral identity and the experience of moral elevation in response to acts of uncommon goodness.

    Science.gov (United States)

    Aquino, Karl; McFerran, Brent; Laven, Marjorie

    2011-04-01

    Four studies using survey and experimental designs examined whether people whose moral identity is highly self-defining are more susceptible to experiencing a state of moral elevation after being exposed to acts of uncommon moral goodness. Moral elevation consists of a suite of responses that motivate prosocial action tendencies. Study 1 showed that people higher (vs. lower) in moral identity centrality reported experiencing more intense elevating emotions, had more positive views of humanity, and were more desirous of becoming a better person after reading about an act of uncommon goodness than about a merely positive situation or an act of common benevolence. Study 2 showed that those high in moral identity centrality were more likely to recall acts of moral goodness and experience moral elevation in response to such events more strongly. These experiences were positively related to self-reported prosocial behavior. Study 3 showed a direct effect on behavior using manipulated, rather than measured, moral identity centrality. Study 4 replicated the effect of moral identity on the states of elevation as well as on self-reported physical sensations and showed that the elevation mediates the relationship between moral identity, witnessing uncommon goodness, and prosocial behavior.

  9. Good Faith

    DEFF Research Database (Denmark)

    Fomcenco, Alex

    2017-01-01

    This article outlines the current state of law in Canada in respect to good faith in contratial relations. The topic is highly relevant due to expected growth in the numbers of contracts concluded between European and Canadian enterprises in the wake of adoption of the Comprehensive Economic...

  10. GOOD GOVERNANCE AND TRANSFORMATION

    Directory of Open Access Journals (Sweden)

    Hans-Jürgen WAGENER

    2005-12-01

    Full Text Available Transformation of a totalitarian, basically administratively coordinated system into a democratic one that is coordinated predominantly by markets and competition has been triggered by, among others, the perception of a serious deficit in welfare and happiness. Public policy has a special task transforming the economic order by liberalisation, privatisation, stabilisation and the installation of institutions that are supportive for competition. After 15 years since transformation began, there are sufficiently differentiated success stories to test the hypothesis: it was good governance that is responsible for success and bad governance for failure. The empirical results support the “Lorenzetti hypothesis”: where freedom, security and trust prevail, the economy flourishes, where they are lacking, the costs of long-term investment are too high. The initial conditions of transition countries seem to be quite similar, nevertheless, even there one can discern good and bad governance. The extent of socialist lawfulness, planning security, cronyism and corruption differed widely between East Berlin and Tashkent. And a good deal of such variations can be found in the pre-socialist history of these countries. However, the main conclusion is that the co-evolution hypothesis states that both, welfare and good governance, go together.

  11. TENDENCIES OF REGIONAL ELITE GOODS MARKET DEVELOPMENT

    Directory of Open Access Journals (Sweden)

    A.I. Tatarkin

    2008-03-01

    Full Text Available During the period of planned economy only a limited section of society with high social status had an access to elite goods in our country. At present an access to these goods is not regulated, and elite goods trade market in Russia is developing rapidly. In the article the essence of "elite good" and "regional elite goods market" concepts is defined, the classification of elite goods markets is given, also the main factors and tendencies of elite goods market development in the Ural Region is analyzed.

  12. Conjugated Linoleic Acid: good or bad nutrient

    Directory of Open Access Journals (Sweden)

    Gonçalves Daniela C

    2010-10-01

    Full Text Available Abstract Conjugated linoleic acid (CLA is a class of 28 positional and geometric isomers of linoleic acid octadecadienoic.Currently, it has been described many benefits related to the supplementation of CLA in animals and humans, as in the treatment of cancer, oxidative stress, in atherosclerosis, in bone formation and composition in obesity, in diabetes and the immune system. However, our results show that, CLA appears to be not a good supplement in patients with cachexia.

  13. Zorba, Socrates, and the good life

    Directory of Open Access Journals (Sweden)

    Kovačević Filip

    2011-01-01

    Full Text Available How should one live in order to live well? What are the defining characteristics of the good life? These questions - the perennial concern of classical scholars - have in the last 25 years become the subject of debates in contemporary social and political theory as well. Foucault (1986, Taylor (1989, Kekes (1995, Cottingham (1998 and Nehamas (1998 have all stressed the importance of the “art of living” or “caring for the self” in light of contemporary political and economic developments. This article, as my contribution to the debate, offers the analysis of two models of the “good life”: the one as presented by Plato and embodied in the literary character of Socrates, and the other as presented by Nikos Kazantzakis and embodied in the literary figure of Zorba. In general terms, Socrates advocates the rule of reason and the denigration and submission of the bodily Eros, while Zorba remains suspicious of the mind - “a careful little shopkeeper” - and stresses the significance of bodily experiences as ways of linking oneself with the rest of the universe. Hence in the article I formulate an ethic of sensual Eros by focusing on Zorba’s way of life and contrast it to the Socratic ethics. I conclude that the concern and respect for the body, for the house in which Eros dwells, is the necessary a priori for the living of the good life. This way of life is not one that rejects reason altogether, but what it does reject is the desire of reason to monopolize the individual’s life processes.

  14. Spatial occupancy models applied to atlas data show Southern Ground Hornbills strongly depend on protected areas.

    Science.gov (United States)

    Broms, Kristin M; Johnson, Devin S; Altwegg, Res; Conquest, Loveday L

    2014-03-01

    Determining the range of a species and exploring species--habitat associations are central questions in ecology and can be answered by analyzing presence--absence data. Often, both the sampling of sites and the desired area of inference involve neighboring sites; thus, positive spatial autocorrelation between these sites is expected. Using survey data for the Southern Ground Hornbill (Bucorvus leadbeateri) from the Southern African Bird Atlas Project, we compared advantages and disadvantages of three increasingly complex models for species occupancy: an occupancy model that accounted for nondetection but assumed all sites were independent, and two spatial occupancy models that accounted for both nondetection and spatial autocorrelation. We modeled the spatial autocorrelation with an intrinsic conditional autoregressive (ICAR) model and with a restricted spatial regression (RSR) model. Both spatial models can readily be applied to any other gridded, presence--absence data set using a newly introduced R package. The RSR model provided the best inference and was able to capture small-scale variation that the other models did not. It showed that ground hornbills are strongly dependent on protected areas in the north of their South African range, but less so further south. The ICAR models did not capture any spatial autocorrelation in the data, and they took an order, of magnitude longer than the RSR models to run. Thus, the RSR occupancy model appears to be an attractive choice for modeling occurrences at large spatial domains, while accounting for imperfect detection and spatial autocorrelation.

  15. Conspicuous Public Goods and Leadership Selection

    NARCIS (Netherlands)

    Jennings, C.; Roelfsema, H.J.

    If voters care for the relative supply of public goods compared to otherjurisdictions, decentralized provision of public goods will be too high.Potentially, centralization internalizes the negative externalities fromthe production of these `conspicuous' public goods. However, in amodel of strategic

  16. Lyman Break Galaxies At z 2 In The GOODS Fields

    Science.gov (United States)

    Haberzettl, Lutz; Williger, G.; Lehnert, M.; Nesvadba, N.

    2009-12-01

    Lyman Break Galaxies (LBGs) have been the benchmarks against which other samples of high redshift galaxies have been compared for the last 2 decades. They are unique in that no other selection mechanism allows us to study galaxies selected in a consistent manner over the span of redshifts from z=0 to 7. An important remaining gap is the redshift range z ˜ 1.5-2.5, which includes near UV (NUV)-band drop-outs. We present first results of a search for LBGs at these redshifts using very sensitive multi-frequency data from the far UV to mid-IR of the GOODS CDF-S and HDF-N. We modelled colors of star-forming galaxies, and found only a small overlap with the BM/BX selection method (Adelberger et al. 2004, ApJ, 607, 226). We developed new color selection criteria using GALEX NUV and optical photometry to identify high star formation galaxies, including NUV-dropouts for 2.0methods, we identified a sample of ? z˜ 2 LBG candidates in both the GOODS CDF-S and the HDF-N. A first analysis of the mean SED of our LBG candidate sample shows results consistent with red LBGs at z ˜ 1, indicating massive galaxies with high star formation rates. Nearly 10% of our selected LBG candidates have mid-IR (IRAC+MIPS) colors comparable both to z ˜ 3 IR-luminous LBGs, which are believed to be dusty, vigorously star-forming massive progenitors of modern ellipticals.

  17. A note on goodness of fit test using moments

    Directory of Open Access Journals (Sweden)

    Alex Papadopoulos

    2007-10-01

    Full Text Available The purpose of this article is to introduce a general moment-based approach to derive formal goodness of fit tests of a parametric family. We show that, in general, an approximate normal test or a chi-squared test can be derived by exploring the moment structure of a parametric family, when moments up to certain order exist. The idea is simple and the resulting tests are easy to implement. To illustrate the use of this approach, we derive moment-based goodness of fit tests for some common discrete and continuous parametric families. We also compare the proposed tests with the well known Pearson-Fisher chi-square test and some distance tests in a simulation study.

  18. Evaluation of surface-wave waveform modeling for lithosphere velocity structure

    Science.gov (United States)

    Chang, Tao-Ming

    Surface-waveform modeling methods will become standard tools for studying the lithosphere structures because they can place greater constraints on earth structure and because of interest in the three-dimensional earth. The purpose of this study is to begin to learn the applicabilities and limitations of these methods. A surface-waveform inversion method is implemented using generalized seismological data functional theory. The method has been tested using synthetic and real seismic data and show that this method is well suited for teleseismic and regional seismograms. Like other linear inversion problems, this method also requires a good starting model. To ease reliance on good starting models, a global search technique, the genetic algorithm, has been applied to surface waveform modeling. This method can rapidly find good models for explaining surface-wave waveform at regional distance. However, this implementation also reveals that criteria which are widely used in seismological studies are not good enough to indicate the goodness of waveform fit. These two methods with the linear waveform inversion method, and traditional surface wave dispersion inversion method have been applied to a western Texas earthquake to test their abilities. The focal mechanism of the Texas event has been reestimated using a grid search for surface wave spectral amplitudes. A comparison of these four algorithms shows some interesting seismic evidences for lithosphere structure.

  19. Good governance as perceived by Dabawenyos

    Directory of Open Access Journals (Sweden)

    Adrian M. Tamayo

    2016-12-01

    Full Text Available The debate on good governance had shaped public policies of many governments. This study was conducted to obtain latent perspectives of good governance. A survey was conducted using two-stage cluster sampling in the first congressional district of Davao City involving 351 respondents. Findings reveal that the notion of good governance of Dabawenyos is primarily a government to implement the rule of law; peace and order is a necessity to facilitate market efficiency. Also, it was found that political leadership creates notions of good governance; public bestowed power to its political leaders as a matter of trust. On the other hand, leaders incorporate soft and hard forms of power in delegating powers without losing control, causing a widespread and significant impact on the formation and development of Davao’s perspectives of good governance. This is the rubber band effect of good governance leadership.

  20. The effect of a finite time horizon in the durable good monopoly problem with atomic consumers

    OpenAIRE

    Berbeglia, Gerardo; Sloan, Peter; Vetta, Adrian

    2014-01-01

    A durable good is a long-lasting good that can be consumed repeatedly over time, and a duropolist is a monopolist in the market of a durable good. In 1972, Ronald Coase conjectured that a duropolist who lacks commitment power cannot sell the good above the competitive price if the time between periods approaches zero. Coase's counterintuitive conjecture was later proven by Gul et al. (1986) under an infinite time horizon model with non-atomic consumers. Remarkably, the situation changes drama...

  1. Effects of Piracy on Quality of Information Goods

    OpenAIRE

    Atanu Lahiri; Debabrata Dey

    2013-01-01

    It is commonly believed that piracy of information goods leads to lower profits, which translate to lower incentives to invest in innovation and eventually to lower-quality products. Manufacturers, policy makers, and researchers all claim that inadequate piracy enforcement efforts translate to lower investments in product development. However, we find many practical examples that contradict this claim. Therefore, to examine this claim more carefully, we develop a rigorous economic model of th...

  2. Mapping the perceptual structure of rectangles through goodness-of-fit ratings.

    Science.gov (United States)

    Palmer, Stephen E; Guidi, Stefano

    2011-01-01

    Three experiments were carried out to investigate the internal structure of a rectangular frame to test Arnheim's (1974 Art and Visual Perception, 1988 The Power of the Center) proposals about its 'structural skeleton'. Observers made subjective ratings of how well a small probe circle fit within a rectangle at different interior positions. In experiment 1, ratings of 77 locations were highest in the center, decreased with distance from the center, greatly elevated along vertical and horizontal symmetry axes, and somewhat elevated along the local symmetry axes. A linear regression model with six symmetry-related factors accounted for 95% of the variance. In experiment 2 we measured perceived fit along local symmetry axes versus global diagonals near the corners to determine which factor was relevant. 2AFC probabilities were elevated only along the local symmetry axes and were higher when the probe was closer to the vertex. In experiment 3 we examined the effect of dividing a rectangular frame into two rectangular 'subframes' using an additional line. The results show that the primary determinant of good fit is the position of the target circle within the local subframes. In general, the results are consistent with Arnheim's proposals about the internal structure of a rectangular frame, but an alternative interpretation is offered in terms of the Gestalt concept of figural goodness.

  3. Good Governance in Public Procurement: A South African Case Study

    Directory of Open Access Journals (Sweden)

    R Roos

    2008-08-01

    Full Text Available In this article good governance in public procurement, with particular reference to accountability is discussed. The principle of providing adequate remedies in public procurement is put under the spotlight. This is done with reference to the decision in Steenkamp NO v Provincial Tender Board, Eastern Cape. In this case the Constitutional Court had to consider whether an initially successful tenderer could lodge a delictual claim for damages to compensate for expenses incurred after conclusion of a contract, which was subsequently rendered void on an application for review of the tender award. The applicable principles of good governance and the applicable provisions of the UNCITRAL Model Law on Public Procurement and the WTO plurilateral Government Procurement Agreement are analysed. This is done to enable an evaluation of the decision by the Constitutional Court in the above case. It is concluded that the South African public procurement system does in this instance comply with the basic principles of good governance with regard to accountability.

  4. KORELASI ANTARA POSISI ELEMEN-ELEMEN ORGANISASI DENGAN TERWUJUDNYA KARAKTER GOOD CORPORATE GOVERNANCE

    Directory of Open Access Journals (Sweden)

    Aries Susanty

    2012-02-01

    Full Text Available Tatakelola perusahaan yang baik dan Model 7-S berhubungan erat dengan pendekatan proses internal. Pendekatan ini menekankan suatu fungsi internal yang selaras untuk mencapai target organisasi. Untuk mencapai target organisasi, tatakelola perusahaan yang baik dan Model 7-S merupakan pendekatan paralel, yang berhubungan satu sama lain. Hubungan antara tatakelola perusahaan dan Model 7-S dapat dijelaskan melalui Model Adaptasi Pascal. Dalam model ini, setiap elemen organisasi yaitu strategi, struktur, sistem, gaya, staf, nilai yang dibagi dan juga keahlian memiliki kontinum. Kontinum ini menyebabkan setiap elemen organisasi cenderung untuk muncul pada domain yang dapat diperkirakan, sesuai dengan kondisi yang dihadapi perusahaan. Berdasarkan inipula, kontinum juga memungkinkan untuk menempatkan setiap elemen organisasi dalam domain yang sesuai dengan karakter tatakelola perusahaan. Penelitian ini menggunakan 12 hipotesis untuk menguji hubungan antara strategi, struktur, sistem, gaya, staf, nilai yang dibagi dan keahlian dengan pencapaian karakter tatakelola perusahaan yang baik. Untuk menguji hipotesis, penelitian ini menggunakan 30 perusahaan BUMN dan Non-BUMN sebagai sampel. Hasilnya, uji empiris membuktikan bahwa BUMN dan non-BUMN memerlukan elemen  organisasi berikut untuk mewujudkan karakter tatakelola perusahaan yang baik: strategi yang direncanakan, struktur elit  (struktur pimpinan berdasarkan pada fungsi, sistem wajib (sistem yang sangat ketat dalam mengikuti tatanan dan prosedur formal yang ditetapkan, pernyataan misi yang berorientasi terhadap kinerja keuangan dan non-keuangan, iklim kerja yang etis, meta kompetensi, dan kemampuan pimpinan untuk bekerja sama. Khusus untuk kepemimpinan transformasional, posisi ini hanya dibutuhkan pada BUMN. Kata kunci - Skor Corporate Governance, Model 7-S           The good corporate governance and the 7-S Model relates to the  internal process approach.  This approach emphasized a smooth

  5. The Relational Nature of the Good

    OpenAIRE

    Korsgaard, Christine M.

    2013-01-01

    This chapter argues that the relation of being good-for someone is prior to the property of being good. After discussing the views of Moore, Geach, Foot, and Rawls, the author argues that there are final goods because there are conscious animals. Hedonists also believe this, but think of goodness as an intrinsic property of certain conscious states—pleasant ones. This is because they mistake pleasure for sensation and so for an object of experience. After advancing an alternative conception o...

  6. Purchasing power parity theory in a model without international trade of goods

    OpenAIRE

    Läufer, Nikolaus K. A.

    1980-01-01

    In recent discussions it frequently occurs that the Purchasing Power Parity Theory is identified with Jevons law of one price. By pointing to real world obstacles working against perfect goods arbitrage it is then erroneously concluded that the Purchasing Power Parity Theory cannot be valid while a dinstiction between an absolute version and a relative version of the Purchasing Power Parity Theory is neglected. In the present paper it is shown that the Purchasing Power Parity Theory in the re...

  7. Measuring performance at trade shows

    DEFF Research Database (Denmark)

    Hansen, Kåre

    2004-01-01

    Trade shows is an increasingly important marketing activity to many companies, but current measures of trade show performance do not adequately capture dimensions important to exhibitors. Based on the marketing literature's outcome and behavior-based control system taxonomy, a model is built...... that captures a outcome-based sales dimension and four behavior-based dimensions (i.e. information-gathering, relationship building, image building, and motivation activities). A 16-item instrument is developed for assessing exhibitors perceptions of their trade show performance. The paper presents evidence...

  8. Landscape evolution models using the stream power incision model show unrealistic behavior when m ∕ n equals 0.5

    Directory of Open Access Journals (Sweden)

    J. S. Kwang

    2017-12-01

    Full Text Available Landscape evolution models often utilize the stream power incision model to simulate river incision: E = KAmSn, where E is the vertical incision rate, K is the erodibility constant, A is the upstream drainage area, S is the channel gradient, and m and n are exponents. This simple but useful law has been employed with an imposed rock uplift rate to gain insight into steady-state landscapes. The most common choice of exponents satisfies m ∕ n = 0.5. Yet all models have limitations. Here, we show that when hillslope diffusion (which operates only on small scales is neglected, the choice m ∕ n = 0.5 yields a curiously unrealistic result: the predicted landscape is invariant to horizontal stretching. That is, the steady-state landscape for a 10 km2 horizontal domain can be stretched so that it is identical to the corresponding landscape for a 1000 km2 domain.

  9. Quantitative Analysis on the Inter-provincial Distribution of Major Public Goods' Expenditure in China - Based on the Data for 2007

    Science.gov (United States)

    Zhao, Hengbo; Jiang, Yun

    This paper uses the principle of Gini Coefficient which measures the equity of income distribution, based on the sample of the financial expenditure of typical public goods and the data of population size which belong to each province and municipality in 2007 to construct the mathematical model. It investigates the regional distribution structure of national public goods' financial expenditure and calculates the corresponding "Gini coefficient" values through the quantitative research method, regression analysis. The calculated results show that it is reasonable on the distribution of the population that China's finance invests in major public products and services vital to the people's livelihood, and the investment does not exceed the bottom line of inequity. At last, the paper analyzes the reasons for the conclusions.

  10. The speed of memory errors shows the influence of misleading information: Testing the diffusion model and discrete-state models.

    Science.gov (United States)

    Starns, Jeffrey J; Dubé, Chad; Frelinger, Matthew E

    2018-05-01

    In this report, we evaluate single-item and forced-choice recognition memory for the same items and use the resulting accuracy and reaction time data to test the predictions of discrete-state and continuous models. For the single-item trials, participants saw a word and indicated whether or not it was studied on a previous list. The forced-choice trials had one studied and one non-studied word that both appeared in the earlier single-item trials and both received the same response. Thus, forced-choice trials always had one word with a previous correct response and one with a previous error. Participants were asked to select the studied word regardless of whether they previously called both words "studied" or "not studied." The diffusion model predicts that forced-choice accuracy should be lower when the word with a previous error had a fast versus a slow single-item RT, because fast errors are associated with more compelling misleading memory retrieval. The two-high-threshold (2HT) model does not share this prediction because all errors are guesses, so error RT is not related to memory strength. A low-threshold version of the discrete state approach predicts an effect similar to the diffusion model, because errors are a mixture of responses based on misleading retrieval and guesses, and the guesses should tend to be slower. Results showed that faster single-trial errors were associated with lower forced-choice accuracy, as predicted by the diffusion and low-threshold models. Copyright © 2018 Elsevier Inc. All rights reserved.

  11. Small GSK-3 Inhibitor Shows Efficacy in a Motor Neuron Disease Murine Model Modulating Autophagy.

    Directory of Open Access Journals (Sweden)

    Estefanía de Munck

    Full Text Available Amyotrophic lateral sclerosis (ALS is a progressive motor neuron degenerative disease that has no effective treatment up to date. Drug discovery tasks have been hampered due to the lack of knowledge in its molecular etiology together with the limited animal models for research. Recently, a motor neuron disease animal model has been developed using β-N-methylamino-L-alanine (L-BMAA, a neurotoxic amino acid related to the appearing of ALS. In the present work, the neuroprotective role of VP2.51, a small heterocyclic GSK-3 inhibitor, is analysed in this novel murine model together with the analysis of autophagy. VP2.51 daily administration for two weeks, starting the first day after L-BMAA treatment, leads to total recovery of neurological symptoms and prevents the activation of autophagic processes in rats. These results show that the L-BMAA murine model can be used to test the efficacy of new drugs. In addition, the results confirm the therapeutic potential of GSK-3 inhibitors, and specially VP2.51, for the disease-modifying future treatment of motor neuron disorders like ALS.

  12. Modelling production-consumption flows of goods in Europe: the trade model within Transtools3

    DEFF Research Database (Denmark)

    de Jong, Gerard; Tanner, Reto; Rich, Jeppe

    2017-01-01

    on disaggregated micro data and then used as an input variable in the trade model. Using Logsums in a trade model is new in applied large-scale freight models, where previous models have simply relied on the distance (e.g. crow-fly) between zones. This linkage of accessibility to the trade model makes it possible......The paper presents a new model for trade flows in Europe that is integrated with a logistics model for transport chain choice through Logsum variables. Logsums measures accessibility across an entire multi-modal logistical chain, and are calculated from a logistics model that has been estimated...... to evaluate how changes in policies on transport costs and changes in multi-modal networks will influence trade patterns. As an example the paper presents outcomes for a European-wide truck tolling scenario, which showcases to which extent trade is influenced by such a policy. The paper discusses how...

  13. Plot showing ATLAS limits on Standard Model Higgs production in the mass range 100-600 GeV

    CERN Multimedia

    ATLAS Collaboration

    2011-01-01

    The combined upper limit on the Standard Model Higgs boson production cross section divided by the Standard Model expectation as a function of mH is indicated by the solid line. This is a 95% CL limit using the CLs method in the entire mass range. The dotted line shows the median expected limit in the absence of a signal and the green and yellow bands reflect the corresponding 68% and 95% expected

  14. Plot showing ATLAS limits on Standard Model Higgs production in the mass range 110-150 GeV

    CERN Multimedia

    ATLAS Collaboration

    2011-01-01

    The combined upper limit on the Standard Model Higgs boson production cross section divided by the Standard Model expectation as a function of mH is indicated by the solid line. This is a 95% CL limit using the CLs method in in the low mass range. The dotted line shows the median expected limit in the absence of a signal and the green and yellow bands reflect the corresponding 68% and 95% expected

  15. Democracy, redistributive taxation and the private provision of public goods

    DEFF Research Database (Denmark)

    Markussen, Thomas

    2011-01-01

    and might even be reversed in this context. Also, the median voter may choose a negative tax rate, even if he or she is poorer than the mean, in order to stimulate production of public goods. The relevance of the model is illustrated with an application to the financing of higher education....

  16. HSP60 may predict good pathological response to neoadjuvant chemoradiotherapy in bladder cancer

    International Nuclear Information System (INIS)

    Urushibara, Masayasu; Kageyama, Yukio; Akashi, Takumi; Otsuka, Yukihiro; Takizawa, Touichiro; Koike, Morio; Kihara, Kazunori

    2007-01-01

    Heat shock proteins (HSPs) play crucial roles in cellular responses to stressful conditions. Expression of HSPs in invasive or high-risk superficial bladder cancer was investigated to identify whether HSPs predict pathological response to neoadjuvant chemoradiotherapy (CRT). Immunohistochemistry was used to assess expression levels of HSP27, HSP60, HSP70, HSP90 and p53 in 54 patients with invasive or high-risk superficial bladder cancer, prior to low-dose neoadjuvant CRT, followed by radical or partial cystectomy. Patients were classified into two groups (good or poor responders) depending on pathological response to CRT, which was defined as the proportion of morphological therapeutic changes in surgical specimens. Good responders showed morphological therapeutic changes in two-thirds or more of tumor tissues. In contrast, poor responders showed changes in less than two-thirds of tumor tissues. Using a multivariate analysis, positive HSP60 expression prior to CRT was found to be marginally associated with good pathological response to CRT (P=0.0564). None of clinicopathological factors was associated with HSP60 expression level. In the good pathological responders, the 5-year cause-specific survival was 88%, which was significantly better than survival in the poor responders (51%) (P=0.0373). Positive HSP60 expression prior to CRT may predict good pathological response to low-dose neoadjuvant CRT in invasive or high-risk superficial bladder cancer. (author)

  17. Is Forced Swimming Immobility a Good Endpoint for Modeling Negative Symptoms of Schizophrenia? - Study of Sub-Anesthetic Ketamine Repeated Administration Effects

    Directory of Open Access Journals (Sweden)

    GILDA NEVES

    2017-08-01

    Full Text Available ABSTRACT Immobility time in the forced swimming has been described as analogous to emotional blunting or apathy and has been used for characterizing schizophrenia animal models. Several clinical studies support the use of NMDA receptor antagonists to model schizophrenia in rodents. Some works describe the effects of ketamine on immobility behavior but there is variability in the experimental design used leading to controversial results. In this study, we evaluated the effects of repeated administration of ketamine sub-anesthetic doses in forced swimming, locomotion in response to novelty and novel object recognition, aiming a broader evaluation of the usefulness of this experimental approach for modeling schizophrenia in mice. Ketamine (30 mg/kg/day i.p. for 14 days induced a not persistent decrease in immobility time, detected 24h but not 72h after treatment. This same administration protocol induced a deficit in novel object recognition. No change was observed in mice locomotion. Our results confirm that repeated administration of sub-anesthetic doses of ketamine is useful in modeling schizophrenia-related behavioral changes in mice. However, the immobility time during forced swimming does not seem to be a good endpoint to evaluate the modeling of negative symptoms in NMDAR antagonist animal models of schizophrenia.

  18. Is Forced Swimming Immobility a Good Endpoint for Modeling Negative Symptoms of Schizophrenia? - Study of Sub-Anesthetic Ketamine Repeated Administration Effects.

    Science.gov (United States)

    Neves, Gilda; Borsoi, Milene; Antonio, Camila B; Pranke, Mariana A; Betti, Andresa H; Rates, Stela M K

    2017-01-01

    Immobility time in the forced swimming has been described as analogous to emotional blunting or apathy and has been used for characterizing schizophrenia animal models. Several clinical studies support the use of NMDA receptor antagonists to model schizophrenia in rodents. Some works describe the effects of ketamine on immobility behavior but there is variability in the experimental design used leading to controversial results. In this study, we evaluated the effects of repeated administration of ketamine sub-anesthetic doses in forced swimming, locomotion in response to novelty and novel object recognition, aiming a broader evaluation of the usefulness of this experimental approach for modeling schizophrenia in mice. Ketamine (30 mg/kg/day i.p. for 14 days) induced a not persistent decrease in immobility time, detected 24h but not 72h after treatment. This same administration protocol induced a deficit in novel object recognition. No change was observed in mice locomotion. Our results confirm that repeated administration of sub-anesthetic doses of ketamine is useful in modeling schizophrenia-related behavioral changes in mice. However, the immobility time during forced swimming does not seem to be a good endpoint to evaluate the modeling of negative symptoms in NMDAR antagonist animal models of schizophrenia.

  19. Relative thinking in consumer choice between differentiated goods and services and its implications for business strategy

    Directory of Open Access Journals (Sweden)

    Ofer H. Azar

    2011-02-01

    Full Text Available The article shows that when people consider differentiated goods or services that differ in price and quality, they exhibit a decision-making bias of ``relative thinking'': relative price differences affect them even when economic theory suggests that only absolute price differences matter. This result is obtained in four different consumption categories. Sometimes subjects are affected only by relative price differences (``full relative thinking'' and sometimes also by absolute price differences (``partial relative thinking''. This behavior has implications for various disciplines, and it is particularly relevant in models dealing with horizontal or vertical differentiation, optimal pricing, competitive strategy, or advertising.

  20. Parameter estimation for LLDPE gas-phase reactor models

    Directory of Open Access Journals (Sweden)

    G. A. Neumann

    2007-06-01

    Full Text Available Product development and advanced control applications require models with good predictive capability. However, in some cases it is not possible to obtain good quality phenomenological models due to the lack of data or the presence of important unmeasured effects. The use of empirical models requires less investment in modeling, but implies the need for larger amounts of experimental data to generate models with good predictive capability. In this work, nonlinear phenomenological and empirical models were compared with respect to their capability to predict the melt index and polymer yield of a low-density polyethylene production process consisting of two fluidized bed reactors connected in series. To adjust the phenomenological model, the optimization algorithms based on the flexible polyhedron method of Nelder and Mead showed the best efficiency. To adjust the empirical model, the PLS model was more appropriate for polymer yield, and the melt index needed more nonlinearity like the QPLS models. In the comparison between these two types of models better results were obtained for the empirical models.

  1. Reconsidering the “Good Divorce”

    Science.gov (United States)

    Amato, Paul R.; Kane, Jennifer B.; James, Spencer

    2011-01-01

    This study attempted to assess the notion that a “good divorce” protects children from the potential negative consequences of marital dissolution. A cluster analysis of data on postdivorce parenting from 944 families resulted in three groups: cooperative coparenting, parallel parenting, and single parenting. Children in the cooperative coparenting (good divorce) cluster had the smallest number of behavior problems and the closest ties to their fathers. Nevertheless, children in this cluster did not score significantly better than other children on 10 additional outcomes. These findings provide only modest support for the good divorce hypothesis. PMID:22125355

  2. Good Towers of Function Fields

    DEFF Research Database (Denmark)

    Bassa, Alp; Beelen, Peter; Nguyen, Nhut

    2014-01-01

    In this paper, we will give an overview of known and new techniques on how one can obtain explicit equations for candidates of good towers of function fields. The techniques are founded in modular theory (both the classical modular theory and the Drinfeld modular theory). In the classical modular...... setup, optimal towers can be obtained, while in the Drinfeld modular setup, good towers over any non-prime field may be found. We illustrate the theory with several examples, thus explaining some known towers as well as giving new examples of good explicitly defined towers of function fields....

  3. How Good is OpenMP

    Directory of Open Access Journals (Sweden)

    Timothy G. Mattson

    2003-01-01

    Full Text Available The OpenMP standard defines an Application Programming Interface (API for shared memory computers. Since its introduction in 1997, it has grown to become one of the most commonly used API's for parallel programming. But success in the market doesn't necessarily imply successful computer science. Is OpenMP a "good" programming environment? What does it even mean to call a programming environment good? And finally, once we understand how good or bad OpenMP is; what can we do to make it even better? In this paper, we will address these questions.

  4. A model predictive controller for the water level of nuclear steam generators

    International Nuclear Information System (INIS)

    Na, Man Gyun

    2001-01-01

    In this work, the model predictive control method was applied to a linear model and a nonlinear model of steam generators. The parameters of a linear model for steam generators are very different according to the power levels. The model predictive controller was designed for the linear steam generator model at a fixed power level. The proposed controller designed at the fixed power level showed good performance for any other power levels by changing only the input-weighting factor. As the input-weighting factor usually increases, its relative stability does so. The stem generator has some nonlinear characteristics. Therefore, the proposed algorithm has been implemented for a nonlinear model of the nuclear steam generator to verify its real performance and also, showed good performance. (author)

  5. Mathematical model and simulations of radiation fluxes from buried radionuclides

    International Nuclear Information System (INIS)

    Ahmad Saat

    1999-01-01

    A mathematical model and a simple Monte Carlo simulations were developed to predict radiation fluxes from buried radionuclides. The model and simulations were applied to measured (experimental) data. The results of the mathematical model showed good acceptable order of magnitude agreement. A good agreement was also obtained between the simple simulations and the experimental results. Thus, knowing the radionuclide distribution profiles in soil from a core sample, it can be applied to the model or simulations to estimate the radiation fluxes emerging from the soil surface. (author)

  6. Estimating carbon and showing impacts of drought using satellite data in regression-tree models

    Science.gov (United States)

    Boyte, Stephen; Wylie, Bruce K.; Howard, Danny; Dahal, Devendra; Gilmanov, Tagir G.

    2018-01-01

    Integrating spatially explicit biogeophysical and remotely sensed data into regression-tree models enables the spatial extrapolation of training data over large geographic spaces, allowing a better understanding of broad-scale ecosystem processes. The current study presents annual gross primary production (GPP) and annual ecosystem respiration (RE) for 2000–2013 in several short-statured vegetation types using carbon flux data from towers that are located strategically across the conterminous United States (CONUS). We calculate carbon fluxes (annual net ecosystem production [NEP]) for each year in our study period, which includes 2012 when drought and higher-than-normal temperatures influence vegetation productivity in large parts of the study area. We present and analyse carbon flux dynamics in the CONUS to better understand how drought affects GPP, RE, and NEP. Model accuracy metrics show strong correlation coefficients (r) (r ≥ 94%) between training and estimated data for both GPP and RE. Overall, average annual GPP, RE, and NEP are relatively constant throughout the study period except during 2012 when almost 60% less carbon is sequestered than normal. These results allow us to conclude that this modelling method effectively estimates carbon dynamics through time and allows the exploration of impacts of meteorological anomalies and vegetation types on carbon dynamics.

  7. Bad is stronger than good

    NARCIS (Netherlands)

    Baumeister, R.F.; Bratslavsky, E.; Finkenauer, C.; Vohs, K.D.

    2001-01-01

    The greater power of bad events over good ones is found in everyday events, major life events (e.g., trauma), close relationship outcomes, social network patterns, interpersonal interactions, and learning processes. Bad emotions, bad parents, and bad feedback have more impact than good ones, and bad

  8. Commentary on the MID3 Good Practices Paper.

    Science.gov (United States)

    Manolis, Efthymios; Brogren, Jacob; Cole, Susan; Hay, Justin L; Nordmark, Anna; Karlsson, Kristin E; Lentz, Frederike; Benda, Norbert; Wangorsch, Gaby; Pons, Gerard; Zhao, Wei; Gigante, Valeria; Serone, Francesca; Standing, Joseph F; Dokoumetzidis, Aris; Vakkilainen, Juha; van den Heuvel, Michiel; Mangas Sanjuan, Victor; Taminiau, Johannes; Kerwash, Essam; Khan, David; Musuamba, Flora Tshinanu; Skottheim Rusten, Ine

    2017-07-01

    During the last 10 years the European Medicines Agency (EMA) organized a number of workshops on modeling and simulation, working towards greater integration of modeling and simulation (M&S) in the development and regulatory assessment of medicines. In the 2011 EMA - European Federation of Pharmaceutical Industries and Associations (EFPIA) Workshop on Modelling and Simulation, European regulators agreed to the necessity to build expertise to be able to review M&S data provided by companies in their dossier. This led to the establishment of the EMA Modelling and Simulation Working Group (MSWG). Also, there was agreement reached on the need for harmonization on good M&S practices and for continuing dialog across all parties. The MSWG acknowledges the initiative of the EFPIA Model-Informed Drug Discovery and Development (MID3) group in promoting greater consistency in practice, application, and documentation of M&S and considers the paper is an important contribution towards achieving this objective. © 2017 The Authors CPT: Pharmacometrics & Systems Pharmacology published by Wiley Periodicals, Inc. on behalf of American Society for Clinical Pharmacology and Therapeutics.

  9. Mowing Submerged Macrophytes in Shallow Lakes with Alternative Stable States: Battling the Good Guys?

    Science.gov (United States)

    Kuiper, Jan J.; Verhofstad, Michiel J. J. M.; Louwers, Evelien L. M.; Bakker, Elisabeth S.; Brederveld, Robert J.; van Gerven, Luuk P. A.; Janssen, Annette B. G.; de Klein, Jeroen J. M.; Mooij, Wolf M.

    2017-04-01

    Submerged macrophytes play an important role in maintaining good water quality in shallow lakes. Yet extensive stands easily interfere with various services provided by these lakes, and harvesting is increasingly applied as a management measure. Because shallow lakes may possess alternative stable states over a wide range of environmental conditions, designing a successful mowing strategy is challenging, given the important role of macrophytes in stabilizing the clear water state. In this study, the integrated ecosystem model PCLake is used to explore the consequences of mowing, in terms of reducing nuisance and ecosystem stability, for a wide range of external nutrient loadings, mowing intensities and timings. Elodea is used as a model species. Additionally, we use PCLake to estimate how much phosphorus is removed with the harvested biomass, and evaluate the long-term effect of harvesting. Our model indicates that mowing can temporarily reduce nuisance caused by submerged plants in the first weeks after cutting, particularly when external nutrient loading is fairly low. The risk of instigating a regime shift can be tempered by mowing halfway the growing season when the resilience of the system is highest, as our model showed. Up to half of the phosphorus entering the system can potentially be removed along with the harvested biomass. As a result, prolonged mowing can prevent an oligo—to mesotrophic lake from becoming eutrophic to a certain extent, as our model shows that the critical nutrient loading, where the lake shifts to the turbid phytoplankton-dominated state, can be slightly increased.

  10. Generating and exploring good building layouts

    KAUST Repository

    Bao, Fan

    2013-07-16

    Good building layouts are required to conform to regulatory guidelines, while meeting certain quality measures. While different methods can sample the space of such good layouts, there exists little support for a user to understand and systematically explore the samples. Starting from a discrete set of good layouts, we analytically characterize the local shape space of good layouts around each initial layout, compactly encode these spaces, and link them to support transitions across the different local spaces. We represent such transitions in the form of a portal graph. The user can then use the portal graph, along with the family of local shape spaces, to globally and locally explore the space of good building layouts. We use our framework on a variety of different test scenarios to showcase an intuitive design, navigation, and exploration interface. Copyright © ACM. Copyright © ACM 2013.

  11. 7 CFR 51.1011 - Good green color.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 2 2010-01-01 2010-01-01 false Good green color. 51.1011 Section 51.1011 Agriculture... Standards for Persian (Tahiti) Limes Definitions § 51.1011 Good green color. Good green color means that the skin of the lime is of a good green color characteristic of the Persian variety. ...

  12. Solving optimization problems by the public goods game

    Science.gov (United States)

    Javarone, Marco Alberto

    2017-09-01

    We introduce a method based on the Public Goods Game for solving optimization tasks. In particular, we focus on the Traveling Salesman Problem, i.e. a NP-hard problem whose search space exponentially grows increasing the number of cities. The proposed method considers a population whose agents are provided with a random solution to the given problem. In doing so, agents interact by playing the Public Goods Game using the fitness of their solution as currency of the game. Notably, agents with better solutions provide higher contributions, while those with lower ones tend to imitate the solution of richer agents for increasing their fitness. Numerical simulations show that the proposed method allows to compute exact solutions, and suboptimal ones, in the considered search spaces. As result, beyond to propose a new heuristic for combinatorial optimization problems, our work aims to highlight the potentiality of evolutionary game theory beyond its current horizons.

  13. Applying ARIMA model for annual volume time series of the Magdalena River

    Directory of Open Access Journals (Sweden)

    Gloria Amaris

    2017-04-01

    Conclusions: The simulated results obtained with the ARIMA model compared to the observed data showed a fairly good adjustment of the minimum and maximum magnitudes. This allows concluding that it is a good tool for estimating minimum and maximum volumes, even though this model is not capable of simulating the exact behaviour of an annual volume time series.

  14. 29 CFR 570.128 - Good faith defense.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 3 2010-07-01 2010-07-01 false Good faith defense. 570.128 Section 570.128 Labor... Provisions of the Fair Labor Standards Act of 1938, as Amended Enforcement § 570.128 Good faith defense. Link... commerce goods which he acquired in good faith in reliance on written assurance from the producer...

  15. 12 CFR 220.6 - Good faith account.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 3 2010-01-01 2010-01-01 false Good faith account. 220.6 Section 220.6 Banks... BY BROKERS AND DEALERS (REGULATION T) § 220.6 Good faith account. In a good faith account, a creditor...) Securities entitled to good faith margin—(1) Permissible transactions. A creditor may effect and finance...

  16. Can rational models be good accounts of developmental change? The case of language development at two time scales.

    Science.gov (United States)

    Dawson, Colin R; Gerken, LouAnn

    2012-01-01

    Rational models of human perception and cognition have allowed researchers new ways to look at learning and the ability to make inferences from data. But how good are such models at accounting for developmental change? In this chapter, we address this question in the domain of language development, focusing on the speed with which developmental change takes place, and classifying different types of language development as either fast or slow. From the pattern of fast and slow development observed, we hypothesize that rational learning processes are generally well suited for handling fast processes over small amounts of input data. In contrast, we suggest that associative learning processes are generally better suited to slow development, in which learners accumulate information about what is typical of their language over time. Finally, although one system may be dominant for a particular component of language learning, we speculate that both systems frequently interact, with the associative system providing a source of emergent hypotheses to be evaluated by the rational system and the rational system serving to highlight which aspects of the learner's input need to be processed in greater depth by the associative system.

  17. Good News in Bad News: How Negativity Enhances Economic Efficacy

    NARCIS (Netherlands)

    Svensson, H.M.; Albæk, E.; van Dalen, A.; de Vreese, C.

    2017-01-01

    Negativity is a news ideology, and its negative effects on attitude formation are widely documented. Contrary to this view, the present study demonstrates that negative economic news can in fact be good news. Based on a two-wave national panel survey and a media content analysis, we show that

  18. Good governance for pension schemes

    CERN Document Server

    Thornton, Paul

    2011-01-01

    Regulatory and market developments have transformed the way in which UK private sector pension schemes operate. This has increased demands on trustees and advisors and the trusteeship governance model must evolve in order to remain fit for purpose. This volume brings together leading practitioners to provide an overview of what today constitutes good governance for pension schemes, from both a legal and a practical perspective. It provides the reader with an appreciation of the distinctive characteristics of UK occupational pension schemes, how they sit within the capital markets and their social and fiduciary responsibilities. Providing a holistic analysis of pension risk, both from the trustee and the corporate perspective, the essays cover the crucial role of the employer covenant, financing and investment risk, developments in longevity risk hedging and insurance de-risking, and best practice scheme administration.

  19. Platelets from Asthmatic Individuals Show Less Reliance on Glycolysis.

    Directory of Open Access Journals (Sweden)

    Weiling Xu

    Full Text Available Asthma, a chronic inflammatory airway disease, is typified by high levels of TH2-cytokines and excessive generation of reactive nitrogen and oxygen species, which contribute to bronchial epithelial injury and airway remodeling. While immune function plays a major role in the pathogenesis of the disease, accumulating evidence suggests that altered cellular metabolism is a key determinant in the predisposition and disease progression of asthma. Further, several studies demonstrate altered mitochondrial function in asthmatic airways and suggest that these changes may be systemic. However, it is unknown whether systemic metabolic changes can be detected in circulating cells in asthmatic patients. Platelets are easily accessible blood cells that are known to propagate airway inflammation in asthma. Here we perform a bioenergetic screen of platelets from asthmatic and healthy individuals and demonstrate that asthmatic platelets show a decreased reliance on glycolytic processes and have increased tricarboxylic acid cycle activity. These data demonstrate a systemic alteration in asthma and are consistent with prior reports suggesting that oxidative phosphorylation is more efficient asthmatic individuals. The implications for this potential metabolic shift will be discussed in the context of increased oxidative stress and hypoxic adaptation of asthmatic patients. Further, these data suggest that platelets are potentially a good model for the monitoring of bioenergetic changes in asthma.

  20. Sales drive advertising expenditures: Evidence for consumer packaged and durable goods in Germany

    OpenAIRE

    Lischka, Juliane A; Kienzler, Stephanie; Mellmann, Ulrike

    2014-01-01

    The relation between sales and advertising is both complex and diverse. Whether advertising activities drive or follow sales is still unclear. We uncover this relation distinguishing between consumer packaged goods (CPG) and durable consumer goods (DCG) industries. We fit vector autoregressive models to sales and advertising expenditures of four CPG and three DCG industries in Germany from 1991 q1 to 2009 q4. Findings reveal that advertising expenditures do not increase total sales of industr...

  1. Good for God? Religious motivation reduces perceived responsibility for and morality of good deeds.

    Science.gov (United States)

    Gervais, Will M

    2014-08-01

    Many people view religion as a crucial source of morality. However, 6 experiments (total N = 1,078) revealed that good deeds are perceived as less moral if they are performed for religious reasons. Religiously motivated acts were seen as less moral than the exact same acts performed for other reasons (Experiments 1-2 and 6). Religious motivations also reduced attributions of intention and responsibility (Experiments 3-6), an effect that fully mediated the effect of religious motivations on perceived morality (Experiment 6). The effects were not explained by different perceptions of motivation orientation (i.e., intrinsic vs. extrinsic) across conditions (Experiment 4) and also were evident when religious upbringing led to an intuitive moral response (Experiment 5). Effects generalized across religious and nonreligious participants. When viewing a religiously motivated good deed, people infer that actually helping others is, in part, a side effect of other motivations rather than an end in itself. Thus, religiously motivated actors are seen as less responsible than secular actors for their good deeds, and their helping behavior is viewed as less moral than identical good deeds performed for either unclear or secular motivations. PsycINFO Database Record (c) 2014 APA, all rights reserved.

  2. A Model of Boundedly Rational Consumer Choice

    OpenAIRE

    Thomas Riechmann

    2000-01-01

    The paper presents an extended version of the standard textbook problem of consumer choice. As usual, agents have to decide about their desired quatities of various consumption goods, at the same time taking into account their limited budget. Prices for the goods are not fixed but arise from a Walrasian interaction of total demand and a stilized supply function for each of the goods. After showing that this type of model cannot be solved analytically, three different types of evolutionary alg...

  3. Student Learning in Guatemala: An Untenured Faculty Perspective on International Service Learning and Public Good

    Science.gov (United States)

    Taylor, Matthew J.

    2009-01-01

    In this article I explain how I combined service learning, public-good work, and research in Guatemala. This path has not been easy. Indeed, it has been risky because the time invested in public-good work and teaching field classes could have detracted from research productivity. Taking a risk under the current and traditional academic model at…

  4. Good practices for quantitative bias analysis.

    Science.gov (United States)

    Lash, Timothy L; Fox, Matthew P; MacLehose, Richard F; Maldonado, George; McCandless, Lawrence C; Greenland, Sander

    2014-12-01

    Quantitative bias analysis serves several objectives in epidemiological research. First, it provides a quantitative estimate of the direction, magnitude and uncertainty arising from systematic errors. Second, the acts of identifying sources of systematic error, writing down models to quantify them, assigning values to the bias parameters and interpreting the results combat the human tendency towards overconfidence in research results, syntheses and critiques and the inferences that rest upon them. Finally, by suggesting aspects that dominate uncertainty in a particular research result or topic area, bias analysis can guide efficient allocation of sparse research resources. The fundamental methods of bias analyses have been known for decades, and there have been calls for more widespread use for nearly as long. There was a time when some believed that bias analyses were rarely undertaken because the methods were not widely known and because automated computing tools were not readily available to implement the methods. These shortcomings have been largely resolved. We must, therefore, contemplate other barriers to implementation. One possibility is that practitioners avoid the analyses because they lack confidence in the practice of bias analysis. The purpose of this paper is therefore to describe what we view as good practices for applying quantitative bias analysis to epidemiological data, directed towards those familiar with the methods. We focus on answering questions often posed to those of us who advocate incorporation of bias analysis methods into teaching and research. These include the following. When is bias analysis practical and productive? How does one select the biases that ought to be addressed? How does one select a method to model biases? How does one assign values to the parameters of a bias model? How does one present and interpret a bias analysis?. We hope that our guide to good practices for conducting and presenting bias analyses will encourage

  5. The Essence of Good Teaching.

    Science.gov (United States)

    Sherman, Robert R.

    1986-01-01

    Compares and contrasts views of what constitutes good teaching in four recent books: "My Harvard, My Yale: Memoirs of College Life by Some Notable Americans" (Dubois, 1982); "Twenty Teachers" (Macrorie, 1984); "Artistry in Teaching" (Rubin, 1985); and "The Essence of Good Teaching: Helping Students Learn and Remember What They Learn" (Eriksen,…

  6. Differences in autonomic physiological responses between good and poor inductive reasoners.

    Science.gov (United States)

    Melis, C; van Boxtel, A

    2001-11-01

    We investigated individual- and task-related differences in autonomic physiological responses induced by time limited figural and verbal inductive reasoning tasks. In a group of 52 participants, the percentage of correctly responded task items was evaluated together with nine different autonomic physiological response measures and respiration rate (RR). Weighted multidimensional scaling analyses of the physiological responses revealed three underlying dimensions, primarily characterized by RR, parasympathetic, and sympathetic activity. RR and sympathetic activity appeared to be relatively more important response dimensions for poor reasoners, whereas parasympathetic responsivity was relatively more important for good reasoners. These results suggest that poor reasoners showed higher levels of cognitive processing intensity than good reasoners. Furthermore, for the good reasoners, the dimension of sympathetic activity was relatively more important during the figural than during the verbal reasoning task, which was explained in terms of hemispheric lateralization in autonomic function.

  7. [The myth of the good savage].

    Science.gov (United States)

    Yampey, N

    1994-09-01

    The conquest of the New World gave way to the myth of the Good Savage. For the Renaissance intellectuals, the ancient ideas about the Golden Age (an ideal society promising an unending bliss) seemed to be brought back to life at last. Sharply contrasting with the European exacerbated unrest of the time, America stood for a redeeming hope, a symbol of a better future. The myth of the Good Savage assumes people to be naturally good, but civilization has led them into the realm of violence, hatred, and cruelty. Besides being naturally good, nice-minded people, "good savages" were also useful, obedient people, most likely to be easily exploited by Europeans--a source for the historical drama to come. On the verge of freeing itself from the Spanish rule, Latin America--fighting its way toward independence, had three enlightened mentors: Voltaire, Rousseau, and Montesquieu. There, again, another deep contrast arose between the abstract characteristics of Latin American aims to perfection, and people's actual behaviors. The former "good savage" became the modern "Latin American" embodying an utopia as well as a hope in his eagerness for setting up a plural, and humanized culture. The myth of the Good Savage represents a deep longing for an objectivation of the ego-ideal: it has been used, so to speak, in collective mobilizations as well as dogmatic crystallizations, to escape from ignominous realities or to project alternatives for a better socially-shared life.

  8. Good Governance According to Islamic Perspective

    Directory of Open Access Journals (Sweden)

    Mohamad Ismail Bin Mohamad Yunus

    2018-02-01

    Full Text Available Abstract The objectives of the professional agencies must embody provisions that promote good governance and embrace values of integrity and accountability and seek support from the public and the government of the day to provide an independent view on all matters. The universal truth is that everything should be done in the public good. Professionals form the backbone of human infrastructure in any economy, politics, social and legal growth. Their contributions through professional performance enhance the good delivery system that facilitates policies making and management for public sector. They provide the skills and talent in balancing the pursuits of maximization of services. The expression “good governance” has been constantly used lately in both public sector as well as private sector in Malaysia. In the context of a private body, it should be within the framework of the statute, which governs the body and also its constitution. In the public sector, it means that the administrators should act professionally and not to abuse or misuse the power or authority given to them. They are regarded as the trustees of the public at large. The scope of this article is on good public governance in the public sector or to be exact, good governmental administration as interpreted by the judiciary especially through its judicial review power and Islamic Perspective based on the principles of Maqasid As Shariah (Objectives of Islamic Law.   Keywords: Good Governance, Public Sector, Malaysian Law, Islamic Perspective, Maqasid As-Shariah.

  9. The Common Good in Classical Political Philosophy

    Science.gov (United States)

    Lewis, V. Bradley

    2006-01-01

    The term "common good" names the end (or final cause) of political and social life in the tradition of moral thought that owes its main substance to Aristotle and St. Thomas Aquinas. It names a genuine good ("bonum honestum") and not merely an instrumental or secondary good defeasible in the face of particular goods. However, at the same time, it…

  10. Considering capital goods in life cycle assessments by input-output analysis. Offshore wind farm as an application example

    International Nuclear Information System (INIS)

    Eickelkamp, Timo

    2013-01-01

    Capital goods are not normally taken into consideration in assessing the sustainability of products on the basis of life cycle assessments. Capital goods are machines and buildings that are used for production purposes over the course of a product's life cycle. Using an offshore wind farm as an example the present study shows how capital goods can be taken into account via a methodologically expanded input-output analysis and thus factored into the life cycle assessment. Besides comparing different calculation methods the author performs a detailed analysis of those parameters with the greatest influence on the outcome. The results show that capital goods have a substantial impact on sustainability in both energy-related and environmental terms. Capital goods should therefore be taken into consideration in life cycle assessments.

  11. From Goods to Solutions

    DEFF Research Database (Denmark)

    Chakkol, Mehmet; Johnson, Mark; Raja, Jawwad

    2014-01-01

    Purpose – This paper aims to adopt service-dominant logic (SDL) to empirically explore network configurations resulting from the provision of goods, goods and services, and solutions. Design/methodology/approach – This paper uses a single, in-depth, exploratory case study in a truck manufacturer......: dyadic, triadic and tetradic. The extent to which different network actors contribute to value co-creation varies across the offerings. Research limitations/implications – This paper is based on a single, in-depth case study developed in one industrial context. Whilst this represents an appropriate...

  12. The good work--a Swedish trade union vision in the shadow of lean production.

    Science.gov (United States)

    Johansson, Jan; Abrahamsson, Lena

    2009-07-01

    "The Good Work" (Det goda arbetet) was established as a highly praised and established concept in the Swedish working life debate in the middle of the 1980s. In this paper, we are going to discuss the concept in relation to the massive introduction of lean production in Swedish industry. The aim of this paper is to restore the theory of the good work into the industrial society of today. We will search for a model for 'good work' in balance between the demands from production and good conditions for a learning environment. The theoretical base for this paper will be found in both organisational research and research on production technology systems. We identify three strong trends in Swedish industrial companies giving both pitfalls and possibilities for the good work; the learning focus as a way to increase productivity and improve working conditions; Lean Production in most cases imply narrow short-cyclic work tasks; and the global market that reduces national discretion. As a result, we formulate a new set of criteria for "the good work".

  13. A detailed BWR recirculation loop model for RELAP

    Energy Technology Data Exchange (ETDEWEB)

    Araiza-Martínez, Enrique, E-mail: enrique.araiza@inin.gob.mx; Ortiz-Villafuerte, Javier, E-mail: javier.ortiz@inin.gob.mx; Castillo-Durán, Rogelio, E-mail: rogelio.castillo@inin.gob.mx

    2017-01-15

    Highlights: • A new detailed BWR recirculation loop model was developed for RELAP. • All jet pumps, risers, manifold, suction and control valves, and recirculation pump are modeled. • Model is tested against data from partial blockage of two jet pumps. • For practical applications, simulation results showed good agreement with available data. - Abstract: A new detailed geometric model of the whole recirculation loop of a BWR has been developed for the code RELAP. This detailed model includes the 10 jet pumps, 5 risers, manifold, suction and control valves, and the recirculation pump, per recirculation loop. The model is tested against data from an event of partial blockage at the entrance nozzle of one jet pump in both recirculation loops. For practical applications, simulation results showed good agreement with data. Then, values of parameters considered as figure of merit (reactor power, dome pressure, core flow, among others) for this event are compared against those from the common 1 jet pump per loop model. The results show that new detailed model led to a closer prediction of the reported power change. The detailed recirculation loop model can provide more reliable boundary condition data to a CFD models for studies of, for example, flow induced vibration, wear, and crack initiation.

  14. Paying for International Environmental Public Goods

    OpenAIRE

    Arriagada, Rodrigo; Perrings, Charles

    2011-01-01

    Supply of international environmental public goods must meet certain conditions to be socially efficient, and several reasons explain why they are currently undersupplied. Diagnosis of the public goods failure associated with particular ecosystem services is critical to the development of the appropriate international response. There are two categories of international environmental public goods that are most likely to be undersupplied. One has an additive supply technology and the other has ...

  15. What should a 'good' model of the NPP operator contain

    International Nuclear Information System (INIS)

    Bainbridge, L.

    1986-01-01

    Much of human factors design is done without reference to models. A 'scientific' cognitive model contains multi-level goal-oriented top-down processing, in which behaviour choice depends on working memory, mental and environmental constraints, and expected results. Simpler models are more practical for supporting 0 behaviour, or predicting performance limits. Many types of reason make numerical predictions of cognitive behaviour non trivial

  16. Students' and teachers' cognitions about good teachers.

    Science.gov (United States)

    Beishuizen, J J; Hof, E; van Putten, C M; Bouwmeester, S; Asscher, J J

    2001-06-01

    Good teachers have been studied ever since Plato described how Socrates taught by asking questions of his audience. Recent findings shed light on two characteristics of good teachers: their personality and their ability. However, more attention has been paid to teachers' practices and opinions than to students' views. The study reported here attempted to deepen our understanding of what students think about good teachers. Students of four age groups (7, 10, 13, and 16 years of age) and teachers from primary and secondary schools were asked to write an essay on the good teacher. The correspondence between conceptual items in the essays was investigated by determining the extent to which they were used in the same essays to describe good teachers. Correspondence analysis revealed two dimensions. The first dimension reflected the preference of students and teachers for describing the good teacher in terms of either personality or ability characteristics. The second dimension was interpreted as an orientation in the essays towards either attachment to, detachment from or commitment to school and teachers. Students and teachers were compared to establish the amount of (dis)agreement about what makes a good teacher. Primary school students described good teachers primarily as competent instructors, focusing on transfer of knowledge and skills, whereas secondary school students emphasised relational aspects of good teachers. Teachers, however, considered good teachers in the first place a matter of establishing personal relationships with their students. Consequently, primary school students and teachers disagreed about the characteristics of good teachers. In secondary education, disagreements between teachers and students were relatively small. The research method of collecting free essays and utilising correspondence analysis to represent conceptual items and groups of participants seems promising as long as a theoretical framework is available to interpret the

  17. Nudge for (the Public) Good: How Defaults Can Affect Cooperation.

    Science.gov (United States)

    Fosgaard, Toke R; Piovesan, Marco

    2015-01-01

    In this paper we test the effect of non-binding defaults on the level of contribution to a public good. We manipulate the default numbers appearing on the decision screen to nudge subjects toward a free-rider strategy or a perfect conditional cooperator strategy. Our results show that the vast majority of our subjects did not adopt the default numbers, but their stated strategy was affected by the default. Moreover, we find that our manipulation spilled over to a subsequent repeated public goods game where default was not manipulated. Here we found that subjects who previously saw the free rider default were significantly less cooperative than those who saw the perfect conditional cooperator default.

  18. Nudge for (the Public Good: How Defaults Can Affect Cooperation.

    Directory of Open Access Journals (Sweden)

    Toke R Fosgaard

    Full Text Available In this paper we test the effect of non-binding defaults on the level of contribution to a public good. We manipulate the default numbers appearing on the decision screen to nudge subjects toward a free-rider strategy or a perfect conditional cooperator strategy. Our results show that the vast majority of our subjects did not adopt the default numbers, but their stated strategy was affected by the default. Moreover, we find that our manipulation spilled over to a subsequent repeated public goods game where default was not manipulated. Here we found that subjects who previously saw the free rider default were significantly less cooperative than those who saw the perfect conditional cooperator default.

  19. Good Practices for Transforming Education

    Science.gov (United States)

    Benavente, Ana; Panchaud, Christine

    2008-01-01

    This text is a guide to the reading and interpretation of the "good practices" that are developing in the countries participating in this project and elsewhere. A systematic approach to the factors making up a "good practice" has enabled us to share our analyses in a more structured manner and to reflect on their potential for…

  20. Why Quorum Sensing Controls Private Goods

    Directory of Open Access Journals (Sweden)

    Martin Schuster

    2017-05-01

    Full Text Available Cell-cell communication, also termed quorum sensing (QS, is a widespread process that coordinates gene expression in bacterial populations. The generally accepted view is that QS optimizes the cell density-dependent benefit attained from cooperative behaviors, often in the form of secreted products referred to as “public goods.” This view is challenged by an increasing number of cell-associated products or “private goods” reported to be under QS-control for which a collective benefit is not apparent. A prominent example is nucleoside hydrolase from Pseudomonas aeruginosa, a periplasmic enzyme that catabolizes adenosine. Several recent studies have shown that private goods can function to stabilize cooperation by co-regulated public goods, seemingly explaining their control by QS. Here we argue that this property is a by-product of selection for other benefits rather than an adaptation. Emphasizing ecophysiological context, we propose alternative explanations for the QS control of private goods. We suggest that the benefit attained from private goods is associated with high cell density, either because a relevant ecological condition correlates with density, or because the private good is, directly or indirectly, involved in cooperative behavior. Our analysis helps guide a systems approach to QS, with implications for antivirulence drug design and synthetic biology.

  1. A decision support model for investment on P2P lending platform.

    Science.gov (United States)

    Zeng, Xiangxiang; Liu, Li; Leung, Stephen; Du, Jiangze; Wang, Xun; Li, Tao

    2017-01-01

    Peer-to-peer (P2P) lending, as a novel economic lending model, has triggered new challenges on making effective investment decisions. In a P2P lending platform, one lender can invest N loans and a loan may be accepted by M investors, thus forming a bipartite graph. Basing on the bipartite graph model, we built an iteration computation model to evaluate the unknown loans. To validate the proposed model, we perform extensive experiments on real-world data from the largest American P2P lending marketplace-Prosper. By comparing our experimental results with those obtained by Bayes and Logistic Regression, we show that our computation model can help borrowers select good loans and help lenders make good investment decisions. Experimental results also show that the Logistic classification model is a good complement to our iterative computation model, which motivates us to integrate the two classification models. The experimental results of the hybrid classification model demonstrate that the logistic classification model and our iteration computation model are complementary to each other. We conclude that the hybrid model (i.e., the integration of iterative computation model and Logistic classification model) is more efficient and stable than the individual model alone.

  2. A decision support model for investment on P2P lending platform.

    Directory of Open Access Journals (Sweden)

    Xiangxiang Zeng

    Full Text Available Peer-to-peer (P2P lending, as a novel economic lending model, has triggered new challenges on making effective investment decisions. In a P2P lending platform, one lender can invest N loans and a loan may be accepted by M investors, thus forming a bipartite graph. Basing on the bipartite graph model, we built an iteration computation model to evaluate the unknown loans. To validate the proposed model, we perform extensive experiments on real-world data from the largest American P2P lending marketplace-Prosper. By comparing our experimental results with those obtained by Bayes and Logistic Regression, we show that our computation model can help borrowers select good loans and help lenders make good investment decisions. Experimental results also show that the Logistic classification model is a good complement to our iterative computation model, which motivates us to integrate the two classification models. The experimental results of the hybrid classification model demonstrate that the logistic classification model and our iteration computation model are complementary to each other. We conclude that the hybrid model (i.e., the integration of iterative computation model and Logistic classification model is more efficient and stable than the individual model alone.

  3. Monetary Policy with Sectoral Linkages and Durable Goods

    DEFF Research Database (Denmark)

    Petrella, Ivan; Rossi, Raffaele; Santoro, Emiliano

    We study the normative implications of a New Keynesian model featuring intersectoral trade of intermediate goods between two sectors that produce durables and non-durables. The interplay between durability and sectoral production linkages fundamentally alters the intersectoral stabilization trade....... Aggregating durable and non-durable inflation depending on the relative degrees of sectoral price stickiness may induce a severe bias. Input materials attenuate the response of sectoral inflations to movements in the real marginal costs, so that the effective slopes of the sectoral supply schedules...

  4. CHRODIS criteria applied to the MASK (MACVIA-ARIA Sentinel NetworK) Good Practice in allergic rhinitis: a SUNFRAIL report

    NARCIS (Netherlands)

    Bousquet, J.; Onorato, G. L.; Bachert, C.; Barbolini, M.; Bedbrook, A.; Bjermer, L.; de Sousa, J. Correia; Chavannes, N. H.; Cruz, A. A.; de Manuel Keenoy, E.; Devillier, P.; Fonseca, J.; Hun, S.; Kostka, T.; Hellings, P. W.; Illario, M.; Ivancevich, J. C.; Larenas-Linnemann, D.; Millot-Keurinck, J.; Ryan, D.; Samolinski, B.; Sheikh, A.; Yorgancioglu, A.; Agache, I.; Arnavielhe, S.; Bewick, M.; Annesi-Maesano, I.; Anto, J. M.; Bergmann, K. C.; Bindslev-Jensen, C.; Bosnic-Anticevich, S.; Bouchard, J.; Caimmi, D. P.; Camargos, P.; Canonica, G. W.; Cardona, V.; Carriazo, A. M.; Cingi, C.; Colgan, E.; Custovic, A.; Dahl, R.; Demoly, P.; de Vries, G.; Fokkens, W. J.; Fontaine, J. F.; Gemicioğlu, B.; Guldemond, N.; Gutter, Z.; Haahtela, T.; Hellqvist-Dahl, B.; Jares, E.; Joos, G.; Just, J.; Khaltaev, N.; Keil, T.; Klimek, L.; Kowalski, M. L.; Kull, I.; Kuna, P.; Kvedariene, V.; Laune, D.; Louis, R.; Magnan, A.; Malva, J.; Mathieu-Dupas, E.; Melén, E.; Menditto, E.; Morais-Almeida, M.; Mösges, R.; Mullol, J.; Murray, R.; Neffen, H.; O'Hehir, R.; Palkonen, S.; Papadopoulos, N. G.; Passalacqua, G.; Pépin, J. L.; Portejoie, F.; Price, D.; Pugin, B.; Raciborski, F.; Simons, F. E. R.; Sova, M.; Spranger, O.; Stellato, C.; Todo Bom, A.; Tomazic, P. V.; Triggiani, M.; Valero, A.; Valovirta, E.; Vandenplas, O.; Valiulis, A.; van Eerd, M.; Ventura, M. T.; Wickman, M.; Young, I.; Zuberbier, T.; Zurkuhlen, A.; Senn, A.

    2017-01-01

    A Good Practice is a practice that works well, produces good results, and is recommended as a model. MACVIA-ARIA Sentinel Network (MASK), the new Allergic Rhinitis and its Impact on Asthma (ARIA) initiative, is an example of a Good Practice focusing on the implementation of multi-sectoral care

  5. Feed forward neural networks modeling for K-P interactions

    International Nuclear Information System (INIS)

    El-Bakry, M.Y.

    2003-01-01

    Artificial intelligence techniques involving neural networks became vital modeling tools where model dynamics are difficult to track with conventional techniques. The paper make use of the feed forward neural networks (FFNN) to model the charged multiplicity distribution of K-P interactions at high energies. The FFNN was trained using experimental data for the multiplicity distributions at different lab momenta. Results of the FFNN model were compared to that generated using the parton two fireball model and the experimental data. The proposed FFNN model results showed good fitting to the experimental data. The neural network model performance was also tested at non-trained space and was found to be in good agreement with the experimental data

  6. Everybody needs good neighbours

    Energy Technology Data Exchange (ETDEWEB)

    Hoffman, G. [Peabody Energy (United States)

    2006-05-15

    The paper outlines the possibilities for mines to work with surrounding communities to bring about effective land reclamation. Last year Peabody Energy teams reclaimed more than 5000 acres of land and planted nearly 750,000 trees, demonstrating that sustainable development is possible in a way that is compatible with environmental improvement in coal mining. The company has won over 20 awards over the last two years. The North Antelope Rochelle Mine in Wyoming earned a Gold Good Neighbour Award for promoting best practices in environmental conservation and mining education. The Black Mesa and Kayenta mines, which operate on Navajo and Hopi lands in Arizona, were honoured with a Silver Good Neighbour Award and a National Excellence in Mining and Reclamation Award. These mines partnered with the tribes, the Bureau of Indian Affairs and local residents to give residents access to grazing land still under Peabody's control. The Farmersburg Mine in Indiana received the Bronze Good Neighbour Award for commitment to industry education and outreach activities. 5 photos.

  7. Business Climate and Good Governance

    Directory of Open Access Journals (Sweden)

    Besmira Manaj

    2015-03-01

    Full Text Available This paper consists of three factors, namely: Good Governance, Business Climate and Corruption. How they affect the development product of Albania, not only as a concept, and a principle but mostly as a sensitive aspect in the integration process. There are some interpretations of this concept, but I intend to analyze the key factors and actors, their cooperation and concrete production in society. Improving governance is necessary to have an integrated long term strategy based upon a continuous cooperation between institutions and citizens. But in developing countries like Albania there are some important questions such as: How can we measure the improvement of Good Governance through policies? Has Good Governance indicated an effective way for the sustainable development? (Meisel, 2008, 6. These question give us the orientation to reflect about the process of development, social economic political behavior and how this multidimensional is transformed in product of good governance. The business cycle is strongly connected with many aspects of political-, social-, juridical aspects and good governance. Despite attempts to draft law regulations, the level of corruption and informality in Albania continues to be a major obstacle. The credibility level in the implementation of law is an indicator that affects democratization and institutional integration. At present, different reports of international institutions, define Albania as the country with the highest level of Corruption in the Balkans, which is a key factor influencing business. The ways with

  8. Management Documentation: Indicators & Good Practice at Cultural Heritage Places

    Science.gov (United States)

    Eppich, R.; Garcia Grinda, J. L.

    2015-08-01

    Documentation for cultural heritage places usually refers to describing the physical attributes, surrounding context, condition or environment; most of the time with images, graphics, maps or digital 3D models in their various forms with supporting textural information. Just as important as this type of information is the documentation of managerial attributes. How do managers of cultural heritage places collect information related to financial or economic well-being? How are data collected over time measured, and what are significant indicators for improvement? What quality of indicator is good enough? Good management of cultural heritage places is essential for conservation longevity, preservation of values and enjoyment by the public. But how is management documented? The paper will describe the research methodology, selection and description of attributes or indicators related to good management practice. It will describe the criteria for indicator selection and why they are important, how and when they are collected, by whom, and the difficulties in obtaining this information. As importantly it will describe how this type of documentation directly contributes to improving conservation practice. Good practice summaries will be presented that highlight this type of documentation including Pamplona and Ávila, Spain and Valletta, Malta. Conclusions are drawn with preliminary recommendations for improvement of this important aspect of documentation. Documentation of this nature is not typical and presents a unique challenge to collect, measure and communicate easily. However, it is an essential category that is often ignored yet absolutely essential in order to conserve cultural heritage places.

  9. WHOLESALER TO RETAILER GOODS FORWARDING CONTROLLING

    Directory of Open Access Journals (Sweden)

    Oleg NIKIFOROV

    2016-06-01

    Full Text Available The modern trends in the development of logistics controlling through the prism of collaboration between wholesale companies and retail chains have been considered. The nature and structure of cargo transportation by the wholesale company to the retail chain have been analysed. The key transportation processes have been identified and the reliance on transportation drivers-forwarders for their effectiveness has been determined. The study has resulted in the program-mathematical approach to the transportation controlling automation used by the wholesale company to deliver goods to the retail chain as well as the mathematical model of the system information flow. The practical recommendations for the mathematical software implementation using the AWS Forwarder software product as an example have been illustrated.

  10. Simulation of changes on the psychosocial risk in the nursing personnel after implementing the policy of good practices on the risk treatment.

    Science.gov (United States)

    Bolívar Murcia, María Paula; Cruz González, Joan Paola; Rodríguez Bello, Luz Angélica

    2018-02-01

    Evaluate the change over time of psychosocial risk management for the nursing personnel of an intermediate complexity clinic of Bogota (Colombia). Descriptive and correlational research performed under the approach of risk management (identification, analysis, assessment and treatment). The psychosocial risk of the nursing personnel was studied through 10-year system dynamics models (with and without the implementation of the policy of good practices on the risk treatment) in two scenarios: when the nursing personnel works shifts of 6 hours (morning or afternoon) and when they work over 12 hours (double shift or night shift). When implementing a policy of good practices on the risk treatment, the double shift scenario shows an improvement among 25% to 88% in the variables of: health, labor motivation, burnout, service level and productivity; as well as in the variables of the organization associated to number of patients, nursing personnel and profit. Likewise, the single shift scenario with good practices improves in all the above-mentioned variables and generates stability on the variables of absenteeism and resignations. The best scenario is the single shift scenario with the application of good practices of risk treatment in comparison with the double shift scenario with good practices, which allows concluding that the good practices have a positive effect on the variables of nursing personnel and on those associated to the organization. Copyright© by the Universidad de Antioquia.

  11. Rubber particle proteins, HbREF and HbSRPP, show different interactions with model membranes.

    Science.gov (United States)

    Berthelot, Karine; Lecomte, Sophie; Estevez, Yannick; Zhendre, Vanessa; Henry, Sarah; Thévenot, Julie; Dufourc, Erick J; Alves, Isabel D; Peruch, Frédéric

    2014-01-01

    The biomembrane surrounding rubber particles from the hevea latex is well known for its content of numerous allergen proteins. HbREF (Hevb1) and HbSRPP (Hevb3) are major components, linked on rubber particles, and they have been shown to be involved in rubber synthesis or quality (mass regulation), but their exact function is still to be determined. In this study we highlighted the different modes of interactions of both recombinant proteins with various membrane models (lipid monolayers, liposomes or supported bilayers, and multilamellar vesicles) to mimic the latex particle membrane. We combined various biophysical methods (polarization-modulation-infrared reflection-adsorption spectroscopy (PM-IRRAS)/ellipsometry, attenuated-total reflectance Fourier-transform infrared (ATR-FTIR), solid-state nuclear magnetic resonance (NMR), plasmon waveguide resonance (PWR), fluorescence spectroscopy) to elucidate their interactions. Small rubber particle protein (SRPP) shows less affinity than rubber elongation factor (REF) for the membranes but displays a kind of "covering" effect on the lipid headgroups without disturbing the membrane integrity. Its structure is conserved in the presence of lipids. Contrarily, REF demonstrates higher membrane affinity with changes in its aggregation properties, the amyloid nature of REF, which we previously reported, is not favored in the presence of lipids. REF binds and inserts into membranes. The membrane integrity is highly perturbed, and we suspect that REF is even able to remove lipids from the membrane leading to the formation of mixed micelles. These two homologous proteins show affinity to all membrane models tested but neatly differ in their interacting features. This could imply differential roles on the surface of rubber particles. © 2013.

  12. 19 CFR 10.594 - Originating goods.

    Science.gov (United States)

    2010-04-01

    ... States Free Trade Agreement Rules of Origin § 10.594 Originating goods. Except as otherwise provided in... good otherwise satisfies any applicable regional value content or other requirements specified in...

  13. Impact of alcohol harm reduction strategies in community sports clubs: pilot evaluation of the Good Sports program.

    Science.gov (United States)

    Rowland, Bosco; Allen, Felicity; Toumbourou, John W

    2012-05-01

    Approximately 4.5 million Australians are involved in community sports clubs. A high level of alcohol consumption tends to be commonplace in this setting. The only program of its type in the world, the Good Sports program was designed to reduce harmful alcohol consumption in these Australian community sports clubs. The program offers a staged accreditation process to encourage the implementation of alcohol harm-reduction strategies. We conducted a postintervention adoption study to evaluate whether community sports club accreditation through the Good Sports program was associated with lower rates of alcohol consumption. We examined alcohol consumption rates in 113 clubs (N = 1,968 participants) and compared these to consumption rates in the general community. We hypothesized that members of clubs with more advanced implementation of the Good Sports accreditation program (Stage Two) would consume less alcohol than those with less advanced implementation (Stage One). Multilevel modeling (MLM) indicated that on days when teams competed, Stage Two club members consumed 19% less alcohol than Stage One club members. MLM also indicated that the length of time a club had been in the Good Sports program was associated with reduced rates of weekly drinking that exceeded Australian short-term risky drinking guidelines. However consumption rates for all clubs were still higher than the general community. Higher accreditation stage also predicted reduced long-term risky drinking by club members. Our findings suggest that community sports clubs show evidence of higher levels of alcohol consumption and higher rates of risky consumption than the general community. Implementation of the Good Sports accreditation strategy was associated with lower alcohol consumption in these settings.

  14. Good performance in nuclear projects

    International Nuclear Information System (INIS)

    1989-01-01

    The nuclear industry has demonstrated good performance in many areas relating to the design, engineering, construction and operation of nuclear facilities. This report of an international symposium held in Tokyo highlights examples of good performance in nuclear projects which can aid the industry in seeking even better performance, thus strengthening the contribution nuclear energy can make to sustainable economic growth

  15. Population Ageing and Pension Reform in a Small Open Economy with Non-Traded Goods

    NARCIS (Netherlands)

    L.J.H. Bettendorf (Leon); B.J. Heijdra (Ben)

    2004-01-01

    textabstractIn this paper we study the implications of population ageing in an economy with a sizeable non-traded goods sector. To this effect a highly stylized micro-founded macro model is constructed in which the age structure of the population plays a non-trivial role. The model distinguishes

  16. “All the good and nothing less”: Consumption of Luxury Goods among the bottom of the pyramid

    Directory of Open Access Journals (Sweden)

    Danielle Soutilha de Souza

    2013-04-01

    Full Text Available The Brazilian middle class has undergone significant growth in recent years accounting for 52% of the population. Precisely because of this phenomenon, we became interested in this research that is focused on women living in Rio de Janeiro. Although there are many recent research in marketing about the consumer habits of this class, mainly due to the increase in their purchasing power, the particularities of the various groups within this large mass and how they behave in face of consumption expected from social elites, such as luxury goods was under explored. This research aims to contribute to a more detailed exploration on this population. In order to observe the production of knowledge and the process of identity construction of women surveyed, the theme was the consumption of luxury goods. Three categories are presented relevant: Luxury, Luxury at Day by Day and Dream and Consumption, which bring distinct and complementary information for a better understanding of the analyzed group. Although traditional theories about luxury present social status, differentiation and hedonism as main reasons for the consumption of these objects, other relevant aspects were observed for this type of consumer, the family being the great arena where most of the social and economic relations happen. The research also shows the development of a peculiar look to fashion by the study group being key to understanding what is luxury. The results of this study show the richness of practices and meanings of consumption within the same group and the importance of a qualitative look for academics and managers in the field of marketing to really understand the phenomena of consumption in modern societies, especially societies that are having a great social and economic development as Brazil.

  17. Good Teachers, Good Schools: How to Create a Successful School

    Science.gov (United States)

    Hudson, David

    2009-01-01

    "Good schools think 'with' people and not 'to' people" argues David Hudson in this thought provoking practical guide for those wanting to bridge the gap between middle and senior management roles, and make a difference in their schools. Accessibly and engagingly written and packed with real-life examples, this book will prove essential…

  18. Good genes, complementary genes and human mate preferences.

    Science.gov (United States)

    Roberts, S Craig; Little, Anthony C

    2008-09-01

    The past decade has witnessed a rapidly growing interest in the biological basis of human mate choice. Here we review recent studies that demonstrate preferences for traits which might reveal genetic quality to prospective mates, with potential but still largely unknown influence on offspring fitness. These include studies assessing visual, olfactory and auditory preferences for potential good-gene indicator traits, such as dominance or bilateral symmetry. Individual differences in these robust preferences mainly arise through within and between individual variation in condition and reproductive status. Another set of studies have revealed preferences for traits indicating complementary genes, focussing on discrimination of dissimilarity at genes in the major histocompatibility complex (MHC). As in animal studies, we are only just beginning to understand how preferences for specific traits vary and inter-relate, how consideration of good and compatible genes can lead to substantial variability in individual mate choice decisions and how preferences expressed in one sensory modality may reflect those in another. Humans may be an ideal model species in which to explore these interesting complexities.

  19. Exploiting the information content of hydrological ''outliers'' for goodness-of-fit testing

    Directory of Open Access Journals (Sweden)

    F. Laio

    2010-10-01

    Full Text Available Validation of probabilistic models based on goodness-of-fit tests is an essential step for the frequency analysis of extreme events. The outcome of standard testing techniques, however, is mainly determined by the behavior of the hypothetical model, FX(x, in the central part of the distribution, while the behavior in the tails of the distribution, which is indeed very relevant in hydrological applications, is relatively unimportant for the results of the tests. The maximum-value test, originally proposed as a technique for outlier detection, is a suitable, but seldom applied, technique that addresses this problem. The test is specifically targeted to verify if the maximum (or minimum values in the sample are consistent with the hypothesis that the distribution FX(x is the real parent distribution. The application of this test is hindered by the fact that the critical values for the test should be numerically obtained when the parameters of FX(x are estimated on the same sample used for verification, which is the standard situation in hydrological applications. We propose here a simple, analytically explicit, technique to suitably account for this effect, based on the application of censored L-moments estimators of the parameters. We demonstrate, with an application that uses artificially generated samples, the superiority of this modified maximum-value test with respect to the standard version of the test. We also show that the test has comparable or larger power with respect to other goodness-of-fit tests (e.g., chi-squared test, Anderson-Darling test, Fung and Paul test, in particular when dealing with small samples (sample size lower than 20–25 and when the parent distribution is similar to the distribution being tested.

  20. Niacin to Boost Your HDL "Good" Cholesterol

    Science.gov (United States)

    Niacin can boost 'good' cholesterol Niacin is a B vitamin that may raise your HDL ("good") cholesterol. But side effects might outweigh benefits for most ... been used to increase high-density lipoprotein (HDL) cholesterol — the "good" cholesterol that helps remove low-density ...

  1. Continuous-Time Public Good Contribution Under Uncertainty: A Stochastic Control Approach

    International Nuclear Information System (INIS)

    Ferrari, Giorgio; Riedel, Frank; Steg, Jan-Henrik

    2017-01-01

    In this paper we study continuous-time stochastic control problems with both monotone and classical controls motivated by the so-called public good contribution problem. That is the problem of n economic agents aiming to maximize their expected utility allocating initial wealth over a given time period between private consumption and irreversible contributions to increase the level of some public good. We investigate the corresponding social planner problem and the case of strategic interaction between the agents, i.e. the public good contribution game. We show existence and uniqueness of the social planner’s optimal policy, we characterize it by necessary and sufficient stochastic Kuhn–Tucker conditions and we provide its expression in terms of the unique optional solution of a stochastic backward equation. Similar stochastic first order conditions prove to be very useful for studying any Nash equilibria of the public good contribution game. In the symmetric case they allow us to prove (qualitative) uniqueness of the Nash equilibrium, which we again construct as the unique optional solution of a stochastic backward equation. We finally also provide a detailed analysis of the so-called free rider effect.

  2. Continuous-Time Public Good Contribution Under Uncertainty: A Stochastic Control Approach

    Energy Technology Data Exchange (ETDEWEB)

    Ferrari, Giorgio, E-mail: giorgio.ferrari@uni-bielefeld.de; Riedel, Frank, E-mail: frank.riedel@uni-bielefeld.de; Steg, Jan-Henrik, E-mail: jsteg@uni-bielefeld.de [Bielefeld University, Center for Mathematical Economics (Germany)

    2017-06-15

    In this paper we study continuous-time stochastic control problems with both monotone and classical controls motivated by the so-called public good contribution problem. That is the problem of n economic agents aiming to maximize their expected utility allocating initial wealth over a given time period between private consumption and irreversible contributions to increase the level of some public good. We investigate the corresponding social planner problem and the case of strategic interaction between the agents, i.e. the public good contribution game. We show existence and uniqueness of the social planner’s optimal policy, we characterize it by necessary and sufficient stochastic Kuhn–Tucker conditions and we provide its expression in terms of the unique optional solution of a stochastic backward equation. Similar stochastic first order conditions prove to be very useful for studying any Nash equilibria of the public good contribution game. In the symmetric case they allow us to prove (qualitative) uniqueness of the Nash equilibrium, which we again construct as the unique optional solution of a stochastic backward equation. We finally also provide a detailed analysis of the so-called free rider effect.

  3. New models to compute solar global hourly irradiation from point cloudiness

    International Nuclear Information System (INIS)

    Badescu, Viorel; Dumitrescu, Alexandru

    2013-01-01

    Highlights: ► Kasten–Czeplak cloudy sky model is tested under the climate of South-Eastern Europe. ► Very simple cloudy sky models based on atmospheric transmission factors. ► Transmission factors are nonlinear functions of the cosine of zenith angle. ► New models’ performance is good for low and intermediate cloudy skies. ► Models show good performance when applied in stations other than the origin station. - Abstract: The Kasten–Czeplak (KC) model [16] is tested against data measured in five meteorological stations covering the latitudes and longitudes of Romania (South-Eastern Europe). Generally, the KC cloudy sky model underestimates the measured values. Its performance is (marginally) good enough for point cloudiness C = 0–1. The performance is good for skies with few clouds (C < 0.3), good enough for skies with medium amount of clouds (C = 0.3–0.7) and poor on very cloudy and overcast skies. New very simple empirical cloudy sky models are proposed. They bring two novelties in respect to KC model. First, new basic clear sky models are used, which evaluate separately the direct and diffuse radiation, respectively. Second, some of the new models assume the atmospheric transmission factor is a nonlinear function of the cosine of zenith angle Z. The performance of the new models is generally better than that of the KC model, for all cloudiness classes. One class of models (called S4) has been further tested. The sub-model S4TOT has been obtained by fitting the generic model S4 to all available data, for all stations. Generally, S4TOT has good accuracy in all stations, for low and intermediate cloudy skies (C < 0.7). The accuracy of S4TOT is good and good enough at intermediate zenith angles (Z = 30–70°) but worse for small and larger zenith angles (Z = 0–30° and Z = 70–85°, respectively). Several S4 sub-models were tested in stations different from the origin station. Almost all sub-models have good or good enough performance for skies

  4. BEHAVIOR OF THE ROMANIAN GREEN GOODS CONSUMERS

    Directory of Open Access Journals (Sweden)

    Mirela-Cristina VOICU

    2014-05-01

    Full Text Available Marketing has put forward for a long time the fact that any activity conducted in an organization should consider an intimate knowledge of the client, and a close look at the green marketing practices used over time shows that eco-friendly products should be positioned in relation to those attributes looked for by the involved consumers. In this context, the following paper reveals some important aspects regarding the Romanian green market and the characteristics of the green consumer behavior together with solutions that marketers can apply to stimulate the consumption of green goods.

  5. How to assess good candidate molecules for self-activated optical power limiting

    Science.gov (United States)

    Lundén, Hampus; Glimsdal, Eirik; Lindgren, Mikael; Lopes, Cesar

    2018-03-01

    Reverse saturable absorbers have shown great potential to attenuate laser radiation. Good candidate molecules and various particles have successfully been incorporated into different glass matrices, enabling the creation of self-activated filters against damaging laser radiation. Although the performance of such filters has been impressive, work is still ongoing to improve the performance in a wider range of wavelengths and pulse widths. The purpose of this tutorial is, from an optical engineering perspective, to give an understanding of the strengths and weaknesses of this class of smart materials, how relevant photophysical parameters are measured and influence system performance and comment on the pitfalls in experimental evaluation of materials. A numerical population model in combination with simple physical formulas is used to demonstrate system behavior from a performance standpoint. Geometrical reasoning shows the advantage of reverse saturable absorption over nonlinear scattering due to a fraction of scattered light being recollected by imaging system optics. The numerical population model illustrates the importance of the optical power limiting performance during the leading edge of a nanosecond pulse, which is most strongly influenced by changes in the two-photon absorption cross section and the triplet linear absorption cross section for a modeled Pt-acetylide. This tutorial not only targets optical engineers evaluating reverse saturable absorbing materials but also aims to assist researchers with a chemistry background working on optical power limiting materials. We also present photophysical data for a series of coumarins that can be useful for the determination of quantum yields and two-photon cross sections and show examples of characterization of molecules with excited triplet states.

  6. R&W Club Frederick Hosts Second Annual Car Show | Poster

    Science.gov (United States)

    A 1994 Ford Thunderbird, a 2006 Porsche 911-S, and a 1996 Chevy Camaro Z28 were just a few of the rides on display this summer at R&W Club Frederick’s second annual Car and Motorcycle Show. “It’s a chance to raise money for a good cause,” said Geoff Seidel, one of the organizers of the event and program director for the Coordinating Center for Clinical Trials, NCI Office of

  7. Generating and exploring good building layouts

    KAUST Repository

    Bao, Fan; Yan, Dongming; Mitra, Niloy J.; Wonka, Peter

    2013-01-01

    Good building layouts are required to conform to regulatory guidelines, while meeting certain quality measures. While different methods can sample the space of such good layouts, there exists little support for a user to understand

  8. A goodness of fit and validity study of the Korean radiological technologists' core job competency model

    International Nuclear Information System (INIS)

    Lim, Chang Seon; Cho, A Ra; Hur, Yera; Choi, Seong Youl

    2017-01-01

    Radiological Technologists deals with the life of a person which means professional competency is essential for the job. Nevertheless, there have been no studies in Korea that identified the job competence of radiologists. In order to define the core job competencies of Korean radiologists and to present the factor models, 147 questionnaires on job competency of radiology were analyzed using 'PASW Statistics Version 18.0' and 'AMOS Version 18.0'. The valid model consisted of five core job competencies ('Patient management', 'Health and safety', 'Operation of equipment', 'Procedures and management') and 17 sub – competencies. As a result of the factor analysis, the RMSEA value was 0.1 and the CFI, and TLI values were close to 0.9 in the measurement model of the five core job competencies. The validity analysis showed that the mean variance extraction was 0.5 or more and the conceptual reliability value was 0.7 or more , And there was a high correlation between subordinate competencies included in each subordinate competencies. The results of this study are expected to provide specific information necessary for the training and management of human resources centered on competence by clearly showing the job competence required for radiologists in Korea's health environment

  9. Population ageing and pension reform in a small open economy with non-traded goods

    NARCIS (Netherlands)

    Bettendorf, Leon J. H.; Heijdra, Ben J.

    2006-01-01

    In this paper we study the implications of population ageing in an economy with a sizeable non-traded goods sector. To this effect a highly stylized micro-founded macro model is constructed in which the age structure of the population plays a non-trivial role. The model distinguishes separate birth

  10. Cooperation among cancer cells as public goods games on Voronoi networks.

    Science.gov (United States)

    Archetti, Marco

    2016-05-07

    Cancer cells produce growth factors that diffuse and sustain tumour proliferation, a form of cooperation that can be studied using mathematical models of public goods in the framework of evolutionary game theory. Cell populations, however, form heterogeneous networks that cannot be described by regular lattices or scale-free networks, the types of graphs generally used in the study of cooperation. To describe the dynamics of growth factor production in populations of cancer cells, I study public goods games on Voronoi networks, using a range of non-linear benefits that account for the known properties of growth factors, and different types of diffusion gradients. The results are surprisingly similar to those obtained on regular graphs and different from results on scale-free networks, revealing that network heterogeneity per se does not promote cooperation when public goods diffuse beyond one-step neighbours. The exact shape of the diffusion gradient is not crucial, however, whereas the type of non-linear benefit is an essential determinant of the dynamics. Public goods games on Voronoi networks can shed light on intra-tumour heterogeneity, the evolution of resistance to therapies that target growth factors, and new types of cell therapy. Copyright © 2016 Elsevier Ltd. All rights reserved.

  11. Governing for the Common Good.

    Science.gov (United States)

    Ruger, Jennifer Prah

    2015-12-01

    The proper object of global health governance (GHG) should be the common good, ensuring that all people have the opportunity to flourish. A well-organized global society that promotes the common good is to everyone's advantage. Enabling people to flourish includes enabling their ability to be healthy. Thus, we must assess health governance by its effectiveness in enhancing health capabilities. Current GHG fails to support human flourishing, diminishes health capabilities and thus does not serve the common good. The provincial globalism theory of health governance proposes a Global Health Constitution and an accompanying Global Institute of Health and Medicine that together propose to transform health governance. Multiple lines of empirical research suggest that these institutions would be effective, offering the most promising path to a healthier, more just world.

  12. Histidine decarboxylase knockout mice, a genetic model of Tourette syndrome, show repetitive grooming after induced fear.

    Science.gov (United States)

    Xu, Meiyu; Li, Lina; Ohtsu, Hiroshi; Pittenger, Christopher

    2015-05-19

    Tics, such as are seen in Tourette syndrome (TS), are common and can cause profound morbidity, but they are poorly understood. Tics are potentiated by psychostimulants, stress, and sleep deprivation. Mutations in the gene histidine decarboxylase (Hdc) have been implicated as a rare genetic cause of TS, and Hdc knockout mice have been validated as a genetic model that recapitulates phenomenological and pathophysiological aspects of the disorder. Tic-like stereotypies in this model have not been observed at baseline but emerge after acute challenge with the psychostimulant d-amphetamine. We tested the ability of an acute stressor to stimulate stereotypies in this model, using tone fear conditioning. Hdc knockout mice acquired conditioned fear normally, as manifested by freezing during the presentation of a tone 48h after it had been paired with a shock. During the 30min following tone presentation, knockout mice showed increased grooming. Heterozygotes exhibited normal freezing and intermediate grooming. These data validate a new paradigm for the examination of tic-like stereotypies in animals without pharmacological challenge and enhance the face validity of the Hdc knockout mouse as a pathophysiologically grounded model of tic disorders. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

  13. High School Students’ Perception of the Concept of ‘Good Citizen

    Directory of Open Access Journals (Sweden)

    Emin KILINÇ

    2013-11-01

    consisting of two sections was constructed based on Davies, Gregory and Riley’s (1999 work. The first section requested standard demographic information from high school students. The second section of the survey instrument included two tasks: 1 main characteristics of good citizen 2 elements that have effects on development on good citizenship knowledge, skills and behaviors. The participants were selected through cluster random sampling during the 2012- 2013 school year in the city of Uşak. A total of 552 high school students participated in this research. The data were analyzed through descriptive analysis, independent sample t test and one-way analysis of varience (ANOVA in SPSS 20 statistical package program. The result of the study showed that three distinct characteristics of good citizenship emerged from the quantitative analysis of high school students responses: 1 social concern characteristics, 2 Knowledge characteristics, 3 conservative characteristics. According to the result, high school students expressed that social concern characteristics are the most important characteristics of good citizen than other characteristics. The findings also indicated that there is a significant difference between male and female high school students on social concern characteristics. Female students more considered social concern than male students. Another findings showed that there are significant differences between school types on social concern characteristics. The results also demonstrate that there is a significant difference between male and female high school students on knowledge characteristics of good citizen. Also, there are significant differences between school types on knowledge characteristics.

  14. Transport of hazardous goods. Befoerderung gefaehrlicher Gueter

    Energy Technology Data Exchange (ETDEWEB)

    1989-01-01

    The course 'Transport of hazardous goods' was held in Berlin in November 1988 in cooperation with the Bundesanstalt fuer Materialforschung und -pruefung. From all lecturs, two are recorded separately: 'Safety of tank trucks - requirements on the tank, development possibiities of active and passive safety' and 'Requirements on the transport of radioactive materials - possible derivations for other hazardous goods'. The other lectures deal with hazardous goods law, requirements on packinging, risk assessment, railroad transport, hazardous goods road network, insurance matters, EC regulations, and waste tourism. (HSCH).

  15. Classifying Multi-Model Wheat Yield Impact Response Surfaces Showing Sensitivity to Temperature and Precipitation Change

    Science.gov (United States)

    Fronzek, Stefan; Pirttioja, Nina; Carter, Timothy R.; Bindi, Marco; Hoffmann, Holger; Palosuo, Taru; Ruiz-Ramos, Margarita; Tao, Fulu; Trnka, Miroslav; Acutis, Marco; hide

    2017-01-01

    Crop growth simulation models can differ greatly in their treatment of key processes and hence in their response to environmental conditions. Here, we used an ensemble of 26 process-based wheat models applied at sites across a European transect to compare their sensitivity to changes in temperature (minus 2 to plus 9 degrees Centigrade) and precipitation (minus 50 to plus 50 percent). Model results were analysed by plotting them as impact response surfaces (IRSs), classifying the IRS patterns of individual model simulations, describing these classes and analysing factors that may explain the major differences in model responses. The model ensemble was used to simulate yields of winter and spring wheat at four sites in Finland, Germany and Spain. Results were plotted as IRSs that show changes in yields relative to the baseline with respect to temperature and precipitation. IRSs of 30-year means and selected extreme years were classified using two approaches describing their pattern. The expert diagnostic approach (EDA) combines two aspects of IRS patterns: location of the maximum yield (nine classes) and strength of the yield response with respect to climate (four classes), resulting in a total of 36 combined classes defined using criteria pre-specified by experts. The statistical diagnostic approach (SDA) groups IRSs by comparing their pattern and magnitude, without attempting to interpret these features. It applies a hierarchical clustering method, grouping response patterns using a distance metric that combines the spatial correlation and Euclidian distance between IRS pairs. The two approaches were used to investigate whether different patterns of yield response could be related to different properties of the crop models, specifically their genealogy, calibration and process description. Although no single model property across a large model ensemble was found to explain the integrated yield response to temperature and precipitation perturbations, the

  16. The Biochemistry Show: a new and fun tool for learning

    Directory of Open Access Journals (Sweden)

    A.H Ono

    2006-07-01

    Full Text Available The traditional methods to teach biochemistry in most universities are based on the memorization of chemical structures,  biochemical  pathways  and  reagent  names,  which  is  many  times  dismotivating  for  the  students.  We presently describe an innovative, interactive and alternative method for teaching biochemistry to medical and nutrition undergraduate students, called the Biochemistry Show (BioBio Show.The Biobio show is based on active participation of the students. They are divided in groups and the groups face each other. One group faces another one group at a time, in a game based on true or false questions that involve subjects of applied biochemistry (exercise, obesity, diabetes, cholesterol, free radicals, among others. The questions of the Show are previously elaborated by senior students. The Biobio Show has four phases, the first one is a selection exam, and from the second to the fourth phase, eliminatory confrontations happen. On a confrontation, the first group must select a certain quantity of questions for the opponent to answer.  The group who choses the questions must know how to answer and justify the selected questions. This procedure is repeated on all phases of the show. On the last phase, the questions used are taken from an exam previously performed by the students: either the 9-hour biochemistry exam (Sé et al. A 9-hour biochemistry exam. An iron man competition or a good way of evaluating undergraduate students? SBBq 2005, abstract K-6 or the True-or-False exam (TFE (Sé et al. Are tutor-students capable of writing good biochemistry exams? SBBq 2004, abstract K-18. The winner group receives an extra 0,5 point on the final grade. Over 70% of the students informed on a questionnaire that the Biobio Show is a valuable tool for learning biochemistry.    That is a new way to enrich the discussion of biochemistry in the classroom without the students getting bored. Moreover, learning

  17. Good breastfeeding policies -- good breastfeeding rates.

    Science.gov (United States)

    1998-01-01

    In Norway, where breast-feeding policies protecting breast-feeding women's needs have been in place since the 1970s, approximately 97% of women breast feed when leaving the hospital, 80% are breast feeding at 3 months, and 20% beyond 12 months. Government family policies play an important role in enabling women to achieve good breast-feeding rates. In Norway: maternity leave is 42 weeks with full pay or 52 weeks with 80% of salary; flexible part-time is available for women from 2 months after giving birth with income supplemented from maternity benefits; after returning to work, women are entitled to 1- to 1.5-hour breaks to return home to breast feed, or to have the child brought to work. "Breast feeding is so normal," writes Hege Jacobson Lepri, "it's more embarrassing to bring out the feeding bottle in public." full text

  18. 68Ga/177Lu-labeled DOTA-TATE shows similar imaging and biodistribution in neuroendocrine tumor model.

    Science.gov (United States)

    Liu, Fei; Zhu, Hua; Yu, Jiangyuan; Han, Xuedi; Xie, Qinghua; Liu, Teli; Xia, Chuanqin; Li, Nan; Yang, Zhi

    2017-06-01

    Somatostatin receptors are overexpressed in neuroendocrine tumors, whose endogenous ligands are somatostatin. DOTA-TATE is an analogue of somatostatin, which shows high binding affinity to somatostatin receptors. We aim to evaluate the 68 Ga/ 177 Lu-labeling DOTA-TATE kit in neuroendocrine tumor model for molecular imaging and to try human-positron emission tomography/computed tomography imaging of 68 Ga-DOTA-TATE in neuroendocrine tumor patients. DOTA-TATE kits were formulated and radiolabeled with 68 Ga/ 177 Lu for 68 Ga/ 177 Lu-DOTA-TATE (M-DOTA-TATE). In vitro and in vivo stability of 177 Lu-DOTA-TATE were performed. Nude mice bearing human tumors were injected with 68 Ga-DOTA-TATE or 177 Lu-DOTA-TATE for micro-positron emission tomography and micro-single-photon emission computed tomography/computed tomography imaging separately, and clinical positron emission tomography/computed tomography images of 68 Ga-DOTA-TATE were obtained at 1 h post-intravenous injection from patients with neuroendocrine tumors. Micro-positron emission tomography and micro-single-photon emission computed tomography/computed tomography imaging of 68 Ga-DOTA-TATE and 177 Lu-DOTA-TATE both showed clear tumor uptake which could be blocked by excess DOTA-TATE. In addition, 68 Ga-DOTA-TATE-positron emission tomography/computed tomography imaging in neuroendocrine tumor patients could show primary and metastatic lesions. 68 Ga-DOTA-TATE and 177 Lu-DOTA-TATE could accumulate in tumors in animal models, paving the way for better clinical peptide receptor radionuclide therapy for neuroendocrine tumor patients in Asian population.

  19. Do good and poor readers make use of morphemic structure in English word recognition?

    Directory of Open Access Journals (Sweden)

    Lynne G. Duncan

    2011-06-01

    Full Text Available The links between oral morphological awareness and the use of derivational morphology are examined in the English word recognition of 8-year-old good and poor readers. Morphological awareness was assessed by a sentence completion task. The role of morphological structure in lexical access was examined by manipulating the presence of embedded words and suffixes in items presented for lexical decision. Good readers were more accurate in the morphological awareness task but did not show facilitation for real derivations even though morpho-semantic information appeared to inform their lexical decisions. The poor readers, who were less accurate, displayed a strong lexicality effect in lexical decision and the presence of an embedded word led to facilitation for words and inhibition for pseudo-words. Overall, the results suggest that both good and poor readers of English are sensitive to the internal structure of written words, with the better readers showing most evidence of morphological analysis.

  20. Trade in Cultural Goods: A Case of the Korean Wave in Asia

    OpenAIRE

    Young Seaon Park

    2014-01-01

    This paper studies the effects of economic development and cultural proximity as common determinants of trade in cultural goods in a dynamic preference selection model. For the empirical analysis, this paper utilizes the gravity framework with importer fixed effects and Poisson pseudo-maximum likelihood estimators. This paper applies the model to Korean export of broadcasting contents to Asian countries. The relative economic development of the export country and the market size of the import...

  1. An inquiry into good hospital governance: A New Zealand-Czech comparison

    Directory of Open Access Journals (Sweden)

    Štrach Pavel

    2006-02-01

    Full Text Available Abstract Background This paper contributes to research in health systems literature by examining the role of health boards in hospital governance. Health care ranks among the largest public sectors in OECD countries. Efficient governance of hospitals requires the responsible and effective use of funds, professional management and competent governing structures. In this study hospital governance practice in two health care systems – Czech Republic and New Zealand – is compared and contrasted. These countries were chosen as both, even though they are geographically distant, have a universal right to 'free' health care provided by the state and each has experienced periods of political change and ensuing economic restructuring. Ongoing change has provided the impetus for policy reform in their public hospital governance systems. Methods Two comparative case studies are presented. They define key similarities and differences between the two countries' health care systems. Each public hospital governance system is critically analysed and discussed in light of D W Taylor's nine principles of 'good governance'. Results While some similarities were found to exist, the key difference between the two countries is that while many forms of 'ad hoc' hospital governance exist in Czech hospitals, public hospitals in New Zealand are governed in a 'collegiate' way by elected District Health Boards. These findings are discussed in relation to each of the suggested nine principles utilized by Taylor. Conclusion This comparative case analysis demonstrates that although the New Zealand and Czech Republic health systems appear to show a large degree of convergence, their approaches to public hospital governance differ on several counts. Some of the principles of 'good governance' existed in the Czech hospitals and many were practiced in New Zealand. It would appear that the governance styles have evolved from particular historical circumstances to meet each

  2. Results of the naive quark model

    International Nuclear Information System (INIS)

    Gignoux, C.

    1987-10-01

    The hypotheses and limits of the naive quark model are recalled and results on nucleon-nucleon scattering and possible multiquark states are presented. Results show that with this model, ropers do not come. For hadron-hadron interactions, the model predicts Van der Waals forces that the resonance group method does not allow. Known many-body forces are not found in the model. The lack of mesons shows up in the absence of a far reaching force. However, the model does have strengths. It is free from spuriousness of center of mass, and allows a democratic handling of flavor. It has few parameters, and its predictions are very good [fr

  3. Setting a good example: supervisors as work-life-friendly role models within the context of boundary management.

    Science.gov (United States)

    Koch, Anna R; Binnewies, Carmen

    2015-01-01

    This multisource, multilevel study examined the importance of supervisors as work-life-friendly role models for employees' boundary management. Particularly, we tested whether supervisors' work-home segmentation behavior represents work-life-friendly role modeling for their employees. Furthermore, we tested whether work-life-friendly role modeling is positively related to employees' work-home segmentation behavior. Also, we examined whether work-life-friendly role modeling is positively related to employees' well-being in terms of feeling less exhausted and disengaged. In total, 237 employees and their 75 supervisors participated in our study. Results from hierarchical linear models revealed that supervisors who showed more segmentation behavior to separate work and home were more likely perceived as work-life-friendly role models. Employees with work-life-friendly role models were more likely to segment between work and home, and they felt less exhausted and disengaged. One may conclude that supervisors as work-life-friendly role models are highly important for employees' work-home segmentation behavior and gatekeepers to implement a work-life-friendly organizational culture. PsycINFO Database Record (c) 2014 APA, all rights reserved.

  4. 12 CFR 747.7 - Good faith certification.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 6 2010-01-01 2010-01-01 false Good faith certification. 747.7 Section 747.7... of Practice and Procedure § 747.7 Good faith certification. (a) General requirement. Every filing or... good faith argument for the extension, modification, or reversal of existing law; and the filing or...

  5. 12 CFR 509.7 - Good faith certification.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 5 2010-01-01 2010-01-01 false Good faith certification. 509.7 Section 509.7... PROCEDURE IN ADJUDICATORY PROCEEDINGS Uniform Rules of Practice and Procedure § 509.7 Good faith... in fact and is warranted by existing law or a good faith argument for the extension, modification, or...

  6. 12 CFR 19.7 - Good faith certification.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 1 2010-01-01 2010-01-01 false Good faith certification. 19.7 Section 19.7... PROCEDURE Uniform Rules of Practice and Procedure § 19.7 Good faith certification. (a) General requirement... warranted by existing law or a good faith argument for the extension, modification, or reversal of existing...

  7. 'The Good Citizen’

    DEFF Research Database (Denmark)

    Offersen, Sara Marie Hebsgaard; Vedsted, Peter; Andersen, Rikke Sand

    2017-01-01

    the Danish welfare state and the middle-class popula- tion is embodied in a responsibility for individual health. Overall, we identify a striving to be a ‘good citizen’; this entails confl icting moral possibilities in relation to experiencing, interpreting and acting on bodily sensations. We examine how...

  8. Introduction to good practice in health, environment and safety management in enterprises

    NARCIS (Netherlands)

    Baranski, B.; Zwetsloot, G.

    2000-01-01

    Purpose of this paper, presented on the fifth annual meeting of the Baltic Sea Network on Occupational Health and Safety (Berlin, 18-19 November 1999), is to outline conceptual models of good practice (GP) in Health, Environment and Safety Management in Enterprises (HESME), present major components

  9. Certification of Credence Goods with Consideration of Consumers’ Learning Ability

    Directory of Open Access Journals (Sweden)

    Xujin Pu

    2014-01-01

    Full Text Available The paper constructs a two-period and an infinitely repeated signaling model for the certification of credence goods, with consideration of the learning ability of consumers. Based on the analysis of the existing conditions of separating equilibrium under different situations, results reveal that the certification cost has a significant influence on the separating equilibrium. The range of certification cost for a separating equilibrium is positively related to the usurp cost and the consumers’ learning ability and is negatively related to the difference in the production cost. Compared with that in a two-period model, the range of the certification cost for a separating equilibrium is greater in the infinitely repeated model and is positively related to the discount coefficient.

  10. Experience with and amount of postpartum maternity care: Comparing women who rated the care they received from the maternity care assistant as 'good' or 'less than good care'.

    Science.gov (United States)

    Baas, C I; Wiegers, T A; de Cock, T P; Erwich, J J H M; Spelten, E R; Hutton, E K

    2017-12-01

    The postpartum period is an important time in the lives of new mothers, their children and their families. The aim of postpartum care is 'to detect health problems of mother and/or baby at an early stage, to encourage breastfeeding and to give families a good start' (Wiegers, 2006). The Netherlands maternity care system aims to enable every new family to receive postpartum care in their home by a maternity care assistant (MCA). In order to better understand this approach, in this study we focus on women who experienced the postpartum care by the MCA as 'less than good' care. Our research questions are; among postpartum women in the Netherlands, what is the uptake of MCA care and what factors are significantly associated with women's rating of care provided by the MCA. Design and setting This study uses data from the 'DELIVER study', a dynamic cohort study, which was set up to investigate the organization, accessibility and quality of primary midwifery care in the Netherlands. Participants In the DELIVER population 95.6% of the women indicated that they had received postpartum maternity care by an MCA in their home. We included the responses of 3170 women. To assess the factors that were significantly associated with reporting 'less than good (postpartum) care' by the MCA, a full cases backward logistic regression model was built using the multilevel approach in Generalized Linear Mixed Models. The mean rating of the postpartum care by the MCA was 8.8 (on a scale from 1-10), and 444 women (14%) rated the postpartum maternity care by the MCA as 'less than good care'. In the full cases multivariable analysis model, odds of reporting 'less than good care' by the MCA were significantly higher for women who were younger (women 25-35 years had an OR 1.32, CI 0.96-1.81 and women 35 years), multiparous (OR 1.27, CI 1.01-1.60) and had a higher level of education (women with a middle level had an OR 1.84,CI 1.22-2.79, and women with a high level of education had an OR 2

  11. Tannic acid modified silver nanoparticles show antiviral activity in herpes simplex virus type 2 infection.

    Directory of Open Access Journals (Sweden)

    Piotr Orlowski

    Full Text Available The interaction between silver nanoparticles and herpesviruses is attracting great interest due to their antiviral activity and possibility to use as microbicides for oral and anogenital herpes. In this work, we demonstrate that tannic acid modified silver nanoparticles sized 13 nm, 33 nm and 46 nm are capable of reducing HSV-2 infectivity both in vitro and in vivo. The antiviral activity of tannic acid modified silver nanoparticles was size-related, required direct interaction and blocked virus attachment, penetration and further spread. All tested tannic acid modified silver nanoparticles reduced both infection and inflammatory reaction in the mouse model of HSV-2 infection when used at infection or for a post-infection treatment. Smaller-sized nanoparticles induced production of cytokines and chemokines important for anti-viral response. The corresponding control buffers with tannic acid showed inferior antiviral effects in vitro and were ineffective in blocking in vivo infection. Our results show that tannic acid modified silver nanoparticles are good candidates for microbicides used in treatment of herpesvirus infections.

  12. 12 CFR 308.7 - Good faith certification.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 4 2010-01-01 2010-01-01 false Good faith certification. 308.7 Section 308.7... PRACTICE AND PROCEDURE Uniform Rules of Practice and Procedure § 308.7 Good faith certification. (a... in fact and is warranted by existing law or a good faith argument for the extension, modification, or...

  13. 12 CFR 263.7 - Good faith certification.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 3 2010-01-01 2010-01-01 false Good faith certification. 263.7 Section 263.7... RULES OF PRACTICE FOR HEARINGS Uniform Rules of Practice and Procedure § 263.7 Good faith certification... in fact and is warranted by existing law or a good faith argument for the extension, modification, or...

  14. 7 CFR 28.407 - Good Ordinary Color.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 2 2010-01-01 2010-01-01 false Good Ordinary Color. 28.407 Section 28.407 Agriculture..., TESTING, AND STANDARDS Standards Official Cotton Standards of the United States for the Color Grade of American Upland Cotton § 28.407 Good Ordinary Color. Good Ordinary Color is color which is within the range...

  15. 7 CFR 28.401 - Good Middling Color.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 2 2010-01-01 2010-01-01 false Good Middling Color. 28.401 Section 28.401 Agriculture..., TESTING, AND STANDARDS Standards Official Cotton Standards of the United States for the Color Grade of American Upland Cotton § 28.401 Good Middling Color. Good Middling Color is color which is within the range...

  16. Long-Term Capital Goods Importation and Minimum Wage Relationship in Turkey: Bounds Testing Approach

    Directory of Open Access Journals (Sweden)

    Tastan Serkan

    2015-04-01

    Full Text Available In order to examine the long-term relationship between capital goods importation and minimum wage, autoregressive distributed lag (ARDL bounds testing approach to the cointegration is used in the study. According to bounds test results, a cointegration relation exists between the capital goods importation and the minimum wage. Therefore an ARDL(4,0 model is estimated in order to determine the long and short term relations between variables. According to the empirical analysis, there is a positive and significant relationship between the capital goods importation and the minimum wage in Turkey in the long term. A 1% increase in the minimum wage leads to a 0.8% increase in the capital goods importation in the long term. The result is similar for short term coefficients. The relationship observed in the long term is preserved in short term, though in a lower level. In terms of error correction model, it can be concluded that error correction mechanism works as the error correction term is negative and significant. Short term deviations might be resolved with the error correction mechanism in the long term. Accordingly, approximately 75% of any deviation from equilibrium which might arise in the previous six month period will be resolved in the current six month period. This means that returning to long term equilibrium progresses rapidly.

  17. Ocean Color Products Supporting the Assessment of Good Environmental Status: Development of a Spatial Distribution Model for the Seagrass Posidonia Oceanica (L.) Delille, 1813

    Science.gov (United States)

    Zucchetta, M.; Taji, M. A.; Mangin, A.; Pastres, R.

    2015-12-01

    binomial generalized linear model as a function of the bathymetry and some water characteristics mainly obtained from satellite data. Full resolution (c.a. 300m) Medium Resolution Imaging Spectrometer (MERIS) sensor imagery have been processed in order to extract a set of environmental variables to be coupled to seagrass distribution in the areas used to calibrate the model and for the whole North Africa coast (i.e. model application area). For the period 2003-2011 we processed data of: 1) the diffuse attenuation coefficient 2) coloured dissolved organic matter 3) Particle backscatter at 443nm; 4) Euphotic depth, estimated considering the coefficient of extinction of light; 5) Euphotic depth/ depth ratio, combining the estimation of euphotic depth with the bathymetry. Other variables have been resampled at MERIS full resolution, like data obtained from Moderate Resolution Imaging Spectroradiometer (MODIS; Sea Surface Temperature and Photosynthetically Available Radiation) or by model simulation (e.g. water salinity). The fitted model suggests that water transparency plays a major role, but also other variables, such as salinity and photosynthetically available radiation at surface, are important at larger spatial scales in explaining meadows distribution. The availability of high resolution time-series of input data allowed us to apply the validated model to the whole NA coast. Using model predictions to identify areas with suitable conditions for P. oceanica, it was possible to develop an indicator of potential habitat use and to define baseline reference conditions, necessary for the assessment of Good Environmental Status in Mediterranean coastal waters. This work shows how the Ocean and Land Colour Instrument (OLCI) within the Sentinel-3 mission can be exploited - thanks to the way opened by MERIS - to carry out the operational monitoring needed for the implementation of the UNEP MAP and EU MSFD Ecosystem Approach to the integrated management of land, water and living

  18. Good Models Gone Bad: Quantifying and Predicting Parameter-Induced Climate Model Simulation Failures

    Science.gov (United States)

    Lucas, D. D.; Klein, R.; Tannahill, J.; Brandon, S.; Covey, C. C.; Domyancic, D.; Ivanova, D. P.

    2012-12-01

    Simulations using IPCC-class climate models are subject to fail or crash for a variety of reasons. Statistical analysis of the failures can yield useful insights to better understand and improve the models. During the course of uncertainty quantification (UQ) ensemble simulations to assess the effects of ocean model parameter uncertainties on climate simulations, we experienced a series of simulation failures of the Parallel Ocean Program (POP2). About 8.5% of our POP2 runs failed for numerical reasons at certain combinations of parameter values. We apply support vector machine (SVM) classification from the fields of pattern recognition and machine learning to quantify and predict the probability of failure as a function of the values of 18 POP2 parameters. The SVM classifiers readily predict POP2 failures in an independent validation ensemble, and are subsequently used to determine the causes of the failures via a global sensitivity analysis. Four parameters related to ocean mixing and viscosity are identified as the major sources of POP2 failures. Our method can be used to improve the robustness of complex scientific models to parameter perturbations and to better steer UQ ensembles. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344 and was funded by the Uncertainty Quantification Strategic Initiative Laboratory Directed Research and Development Project at LLNL under project tracking code 10-SI-013 (UCRL LLNL-ABS-569112).

  19. Rules for the certification of good practices in clinical laboratories. No regulation. 3-2009. Good Laboratory Practice

    International Nuclear Information System (INIS)

    2015-01-01

    Regulation for Certification of Good Practices in clinical laboratories, hereinafter Regulation establishes the methodology and procedures for clinical laboratories to demonstrate their state of compliance with good practices, according to Regulation 3-2009, and that the CECMED can verify.

  20. 12 CFR 908.23 - Good faith certification.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 7 2010-01-01 2010-01-01 false Good faith certification. 908.23 Section 908.23... OPERATIONS RULES OF PRACTICE AND PROCEDURE IN HEARINGS ON THE RECORD General Rules § 908.23 Good faith... filing or submission of record is well-grounded in fact and is warranted by existing law or a good faith...

  1. 12 CFR 1780.7 - Good faith certification.

    Science.gov (United States)

    2010-01-01

    ... 12 Banks and Banking 7 2010-01-01 2010-01-01 false Good faith certification. 1780.7 Section 1780.7... DEVELOPMENT RULES OF PRACTICE AND PROCEDURE RULES OF PRACTICE AND PROCEDURE General Rules § 1780.7 Good faith... record is well-grounded in fact and is warranted by existing law or a good faith, nonfrivolous argument...

  2. Attractive Women Want it All: Good Genes, Economic Investment, Parenting Proclivities, and Emotional Commitment1

    Directory of Open Access Journals (Sweden)

    David M. Buss

    2008-01-01

    Full Text Available The current research tests the hypothesis that women have an evolved mate value calibration adaptation that functions to raise or lower their standards in a long-term mate according to their own mate value. A woman's physical attractiveness is a cardinal component of women's mate value. We correlated observer-assessed physical attractiveness (face, body, and overall with expressed preferences for four clusters of mate characteristics (N = 214: (1 hypothesized good-gene indicators (e.g., masculinity, sexiness; (2 hypothesized good investment indicators (e.g., potential income; (3 good parenting indicators (e.g., desire for home and children, and (4 good partner indicators (e.g., being a loving partner. Results supported the hypothesis that high mate value women, as indexed by observer-judged physical attractiveness, expressed elevated standards for all four clusters of mate characteristics. Discussion focuses on potential design features of the hypothesized mate-value calibration adaptation, and suggests an important modification of the trade-off model of women's mating. A minority of women—notably those low in mate value who are able to escape male mate guarding and the manifold costs of an exposed infidelity—will pursue a mixed mating strategy, obtaining investment from one man and good genes from an extra-pair copulation partner (as the trade-off model predicts. Since the vast majority of women secure genes and direct benefits from the same man, however, most women will attempt to secure the best combination of all desired qualities from the same man.

  3. Good News for New Orleans: Early Evidence Shows Reforms Lifting Student Achievement

    Science.gov (United States)

    Harris, Douglas N.

    2015-01-01

    What happened to the New Orleans public schools following the tragic levee breeches after Hurricane Katrina is truly unprecedented. Within the span of one year, all public-school employees were fired, the teacher contract expired and was not replaced, and most attendance zones were eliminated. The state took control of almost all public schools…

  4. Study on radioactivity in consumer goods

    International Nuclear Information System (INIS)

    1976-01-01

    Consumer goods containing radionuclides are increasingly utilized, sometimes for having chemical or technological properties which nonradioactive materials cannot fulfill (e.g. uranium paints) or it may be that radioactivity is especially required (e.g. fluorescent paints, fire-alarm-boxes, electronic instruments). The present study makes a compilation of consumer goods containing radioactive substances which are available to the general public in the nine countries of the Community, carries out a medium and long term study to assess how accumulated radiation from these goods could affect the population as a whole, and proposes measures to minimize the effects of such accumulation

  5. 29 CFR 779.108 - Goods produced for commerce.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 3 2010-07-01 2010-07-01 false Goods produced for commerce. 779.108 Section 779.108 Labor... Coverage Employees Engaged in Commerce Or in the Production of Goods for Commerce § 779.108 Goods produced for commerce. Goods are “produced for commerce” if they are “produced, manufactured, mined, handled or...

  6. Counterfeit Goods and Income Inequality

    OpenAIRE

    Stefania Scandizzo

    2001-01-01

    This paper examines the effect of counterfeit goods in a world where consumers are differentiated by level of income and innovation is quality enhancing. Counterfeit goods are defined as products with the same characteristics as “originals”, but of lower quality. The effect of imitation on firms’ profits and consumer welfare depends on the distribution of income within the country. In particular, the greater the level of income inequality the larger the increase in consumer welfare due to the...

  7. Good Policy, Good Practice II. Improving Outcomes and Productivity in Higher Education: A Guide for Policymakers

    Science.gov (United States)

    Brenneman, Meghan Wilson; Callan, Patrick M.; Ewell, Peter T.; Finney, Joni E.; Jones, Dennis P.; Zis, Stacey

    2010-01-01

    This new edition of "Good Policy, Good Practice II" revises and updates the authors' 2007 publication. Like the earlier edition, it responds to one of the questions that is raised most frequently in the authors' work with public policy and education leaders as they begin to address the national and state imperatives to increase the proportion of…

  8. Towards policy relevant environmental modeling: contextual validity and pragmatic models

    Science.gov (United States)

    Miles, Scott B.

    2000-01-01

    "What makes for a good model?" In various forms, this question is a question that, undoubtedly, many people, businesses, and institutions ponder with regards to their particular domain of modeling. One particular domain that is wrestling with this question is the multidisciplinary field of environmental modeling. Examples of environmental models range from models of contaminated ground water flow to the economic impact of natural disasters, such as earthquakes. One of the distinguishing claims of the field is the relevancy of environmental modeling to policy and environment-related decision-making in general. A pervasive view by both scientists and decision-makers is that a "good" model is one that is an accurate predictor. Thus, determining whether a model is "accurate" or "correct" is done by comparing model output to empirical observations. The expected outcome of this process, usually referred to as "validation" or "ground truthing," is a stamp on the model in question of "valid" or "not valid" that serves to indicate whether or not the model will be reliable before it is put into service in a decision-making context. In this paper, I begin by elaborating on the prevailing view of model validation and why this view must change. Drawing from concepts coming out of the studies of science and technology, I go on to propose a contextual view of validity that can overcome the problems associated with "ground truthing" models as an indicator of model goodness. The problem of how we talk about and determine model validity has much to do about how we perceive the utility of environmental models. In the remainder of the paper, I argue that we should adopt ideas of pragmatism in judging what makes for a good model and, in turn, developing good models. From such a perspective of model goodness, good environmental models should facilitate communication, convey—not bury or "eliminate"—uncertainties, and, thus, afford the active building of consensus decisions, instead

  9. A Model for Good Governance of Healthcare Technology Management in the Public Sector: Learning from Evidence-Informed Policy Development and Implementation in Benin.

    Directory of Open Access Journals (Sweden)

    P Th Houngbo

    Full Text Available Good governance (GG is an important concept that has evolved as a set of normative principles for low- and middle-income countries (LMICs to strengthen the functional capacity of their public bodies, and as a conditional prerequisite to receive donor funding. Although much is written on good governance, very little is known on how to implement it. This paper documents the process of developing a strategy to implement a GG model for Health Technology Management (HTM in the public health sector, based on lessons learned from twenty years of experience in policy development and implementation in Benin. The model comprises six phases: (i preparatory analysis, assessing the effects of previous policies and characterizing the HTM system; (ii stakeholder identification and problem analysis, making explicit the perceptions of problems by a diverse range of actors, and assessing their ability to solve these problems; (iii shared analysis and visioning, delineating the root causes of problems and hypothesizing solutions; (iv development of policy instruments for pilot testing, based on quick-win solutions to understand the system's responses to change; (v policy development and validation, translating the consensus solutions identified by stakeholders into a policy; and (vi policy implementation and evaluation, implementing the policy through a cycle of planning, action, observation and reflection. The policy development process can be characterized as bottom-up, with a central focus on the participation of diverse stakeholders groups. Interactive and analytical tools of action research were used to integrate knowledge amongst actor groups, identify consensus solutions and develop the policy in a way that satisfies criteria of GG. This model could be useful for other LMICs where resources are constrained and the majority of healthcare technologies are imported.

  10. Non-Fixed Investment in Voluntary Public Goods Games

    Science.gov (United States)

    Wang, Shuai; Xu, Zhaojin; Zhang, Lianzhong

    2018-05-01

    In this work, we introduce a non-fixed investment ratio to the public goods games in which players can determine whether or not to participate and how much money to invest into the common pool, and with it a new mechanism has been established. We explicitly demonstrate a different rockscissors- paper dynamics which is a consequence of this model. Meanwhile, it is shown how the mechanism of non-fixed investment ratio influences the players' decision. In addition, we found that the length of memory has an important effect on the average payoff of the population by this introduction.

  11. The perception of corporate services directorate in a metropolitan municipality on King III good governance compliance in business and projects

    Directory of Open Access Journals (Sweden)

    Sly Newton Mutiro

    2015-03-01

    Full Text Available Good governance has been and is a growing phenomenon for many business organisations regardless of size, profit margins and purpose for existence. The South African Metropolitan municipality Metropolitan Municipality is one such organisation that has adopted good governance models to business practices. The challenge was how to effectively and efficiently implement governance issues around projects and business organisations. A number of people, committees and institutions have developed different governance frameworks that can be adopted by organisations as a guide to good governance. This research is based on King III guide to good governance. The objective was to establish the perceptions of the corporate services directorate in the South African Metropolitan municipality municipality on King III good governance compliance by interviewing some employees orally and through a questionnaire. The responses were captured and analysed using IMB SPSS software. Problems were identified in governance training and understanding in general. Another major finding was poor communication internally and externally. To overcome these shortfall recommendations were made. Communication models, communication plan, governance models and training were recommended. The major challenges facing the South African Metropolitan municipality Metropolitan Municipality are poor effective governance communication and lack of governance training.

  12. GOOD GOVERNANCE: NORMATIVE VS. DESCRIPTIVE DIMENSION

    Directory of Open Access Journals (Sweden)

    Ciprian IFTIMOAEI

    2015-04-01

    Full Text Available The concept of “good governance” was used for the first time in the 1989 World Bank Report – Sub-Saharan Africa: From Crisis to Sustainable Growth. A Long-Term Perspective Study – and has already made history in international studies, especially after the breakdown of the communist regimes. The governance has to do with authority, decision-making and accountability.The good governance is defined as the capacity of the government to manage a nation’s affaires, to provide economic development, welfare for citizens, and social protection for the poor. In this article,the concept of good governance is analysed according to two main dimensions: the normative dimension which comprises principles, values and norms that are guiding the international community and the governments in the management of policymaking process;the descriptive dimension which refers to the practical aspects of implementing the good governance’s standards as policies, programmes and structural reforms with the aim of solving or ameliorating the problems of developing countries.

  13. Aspiration dynamics and the sustainability of resources in the public goods dilemma

    Energy Technology Data Exchange (ETDEWEB)

    Du, Jinming, E-mail: jmdu@pku.edu.cn [Center for Systems and Control, College of Engineering, Peking University, Beijing 100871 (China); Wu, Bin, E-mail: bin.wu@evolbio.mpg.de [School of Science, Beijing University of Posts and Communications, Beijing 100876 (China); Department of Evolutionary Theory, Max-Planck Institute for Evolutionary Biology, August-Thienemann-Straße 2, 24306 Plön (Germany); Wang, Long, E-mail: longwang@pku.edu.cn [Center for Systems and Control, College of Engineering, Peking University, Beijing 100871 (China)

    2016-04-01

    How to exploit public non-renewable resources is a public goods dilemma. Individuals can choose to limit the depletion in order to use the resource for a longer time or consume more goods to benefit themselves. When the resource is used up, there is no benefit for the future generations any more, thus the evolutionary process ends. Here we investigate what mechanisms can extend the use of resources in the framework of evolutionary game theory under two updating rules based on imitation and aspiration, respectively. Compared with imitation process, aspiration dynamics may prolong the sustainable time of a public resource. - Highlights: • We establish a game model to capture the sustainable time of public goods. • We propose a theoretical method to study how fast an evolutionary process ends. • Strong selection shortens the evolutionary time of public resource dilemma. • Compared with imitation process, aspiration dynamics prolong the sustainable time. • The sustainable time is the shortest for the intermediate aspiration level.

  14. Aspiration dynamics and the sustainability of resources in the public goods dilemma

    International Nuclear Information System (INIS)

    Du, Jinming; Wu, Bin; Wang, Long

    2016-01-01

    How to exploit public non-renewable resources is a public goods dilemma. Individuals can choose to limit the depletion in order to use the resource for a longer time or consume more goods to benefit themselves. When the resource is used up, there is no benefit for the future generations any more, thus the evolutionary process ends. Here we investigate what mechanisms can extend the use of resources in the framework of evolutionary game theory under two updating rules based on imitation and aspiration, respectively. Compared with imitation process, aspiration dynamics may prolong the sustainable time of a public resource. - Highlights: • We establish a game model to capture the sustainable time of public goods. • We propose a theoretical method to study how fast an evolutionary process ends. • Strong selection shortens the evolutionary time of public resource dilemma. • Compared with imitation process, aspiration dynamics prolong the sustainable time. • The sustainable time is the shortest for the intermediate aspiration level.

  15. Narrative Processes in Psychotherapy: differences between Good and Poor Outcome Clients

    Directory of Open Access Journals (Sweden)

    Luis Botella

    2015-12-01

    Full Text Available This paper compares 30 patients with good therapeutic outcome to 30 with poor therapeutic outcome in terms of the differential distribution of (1 Intake Variables (2 Outcome and Process Variables, and (3 Narrative Variables. Results indicated that psychosocial functioning, motivation, pre-therapy symptoms, Working Alliance, total number of therapy sessions, total pre-post symptom reduction, and mean scoring for total working alliance in sessions 3, 4, and 8 discriminated between both groups. Results also showed that almost all narrative variables except some of them discriminated good outcome clients from poor outcome ones from the beginning, midpoint and final stage of their therapeutic process. These results are discussed according to their relevance for clinical practice.

  16. Introduction of an "energy goodness" number for supermarket

    DEFF Research Database (Denmark)

    Rasmussen, Bjarne D.; Munter, Preben; Holm, Henning V.

    1999-01-01

    A test method for determining the efficiency of supermarket refrigeration systems has been developed. The test method is based on a combination of measurements of air temperatures and energy consumption on an actual system and calculations of the energy consumption for a reference refrigeration...... between the calculated energy consumption of the reference system and the measured energy consumption for the actual system. Four different Danish supermarkets have been tested using this method. The results show that supermarkets in Denmark can be expected to have “Goodness numbers” ranging from 0...

  17. Good God?!? Lamentations as a model for mourning the loss of the good God.

    Science.gov (United States)

    Houck-Loomis, Tiffany

    2012-09-01

    This article will address the devastating psychological and social effects due to the loss of one's primary love-object, namely God in the case of faith communities and religious individuals. By using Melanie Klein's Object Relations Theory (Klein in Envy and gratitude and other works 1946/1963. The Free Press, New York, 1975a) as a way to enter the text of Lamentations, I will articulate an alternative reading that can serve as a model for Pastors and Educators to use when walking with individuals and communities through unspeakable losses. I will argue that Lamentations may be used as a tool for naming confounding depression and anxiety that stems from a damaged introjected object (one's personal God). This tool may provide individuals and communities a framework for placing anger and contempt upon God in order to re-assimilate this loved yet hated object, eventually leading toward healing and restoration of the self.

  18. Towards good environmental governance in Europe

    NARCIS (Netherlands)

    Heldeweg, Michiel A.

    2005-01-01

    This article is about good governance, as presented in the 2001 EC White Paper, in relation to environmental legal policy making in Europe. First a concise analysis is made of the concept of good governance. Then, in a ``tour d’horizon’’, environmental policy programmes, legal cornerstones and

  19. Good Faith in European Contract Law

    NARCIS (Netherlands)

    Hondius, E.H.

    2002-01-01

    Reinhard Zimmermann and Simon Whittaker, Good Faith in European Contract Law, pp 720, ISBN 0 521 77190 0, Cambridge University Press, Cambridge 2000. This is the first publication resulting from the Trento Common Core of European Private Law project. It analyses the law relating to good faith in

  20. Modified Distribution-Free Goodness-of-Fit Test Statistic.

    Science.gov (United States)

    Chun, So Yeon; Browne, Michael W; Shapiro, Alexander

    2018-03-01

    Covariance structure analysis and its structural equation modeling extensions have become one of the most widely used methodologies in social sciences such as psychology, education, and economics. An important issue in such analysis is to assess the goodness of fit of a model under analysis. One of the most popular test statistics used in covariance structure analysis is the asymptotically distribution-free (ADF) test statistic introduced by Browne (Br J Math Stat Psychol 37:62-83, 1984). The ADF statistic can be used to test models without any specific distribution assumption (e.g., multivariate normal distribution) of the observed data. Despite its advantage, it has been shown in various empirical studies that unless sample sizes are extremely large, this ADF statistic could perform very poorly in practice. In this paper, we provide a theoretical explanation for this phenomenon and further propose a modified test statistic that improves the performance in samples of realistic size. The proposed statistic deals with the possible ill-conditioning of the involved large-scale covariance matrices.

  1. "The Corn People Have a Song Too. It Is Very Good": On Beauty, Truth, and Goodness

    Science.gov (United States)

    Chamberlin, J. Edward

    2009-01-01

    Twenty-first-century skeptics would say that there are really no such things as beauty and truth and certainly not goodness. A Pueblo poet seemed to think there was--"the corn people have a song / it is very good"--and unless people think they know better, they'd better listen up. This article begins with a short piece, set down by the…

  2. On Becoming a Good English Language Learner: An Exploratory Case Study

    Science.gov (United States)

    Panzachi Heredia, Damaris Ana Ruth; Luchini, Pedro Luis

    2015-01-01

    This paper reports a case study that explores the cognitive process and the language learning strategies and styles that one Spanish trainee used to become a good English language learner. The participant held an in-depth, semi-structured interview and completed a learning style survey. Results show that the conscious use of multiple…

  3. Evaluation and comparison of alternative fleet-level selective maintenance models

    International Nuclear Information System (INIS)

    Schneider, Kellie; Richard Cassady, C.

    2015-01-01

    Fleet-level selective maintenance refers to the process of identifying the subset of maintenance actions to perform on a fleet of repairable systems when the maintenance resources allocated to the fleet are insufficient for performing all desirable maintenance actions. The original fleet-level selective maintenance model is designed to maximize the probability that all missions in a future set are completed successfully. We extend this model in several ways. First, we consider a cost-based optimization model and show that a special case of this model maximizes the expected value of the number of successful missions in the future set. We also consider the situation in which one or more of the future missions may be canceled. These models and the original fleet-level selective maintenance optimization models are nonlinear. Therefore, we also consider an alternative model in which the objective function can be linearized. We show that the alternative model is a good approximation to the other models. - Highlights: • Investigate nonlinear fleet-level selective maintenance optimization models. • A cost based model is used to maximize the expected number of successful missions. • Another model is allowed to cancel missions if reliability is sufficiently low. • An alternative model has an objective function that can be linearized. • We show that the alternative model is a good approximation to the other models

  4. The psychological aspect of goods

    Directory of Open Access Journals (Sweden)

    Rejmaneh Evžen

    2003-01-01

    Full Text Available The author, a psychologist from Prague, discusses the theory of consumption from the socio-political angle. He discusses in detail the double features of goods from the psychological point of view: a the material features and b nominal, notional features of goods. The latter (nominal feature has been especially emphasized, the one that is being transformed into a specific "image of goods". The author also analyses its influence upon the consumers' behavior, connecting it with advertising as well. Later on in the paper the author shifts his analysis to the process of creating new products and to the establishment of the new conception that would not deal any more with individual products but rather with a "field of requirements". The author emphasizes the importance of research. He considers that changes in the way of living considerably influence the formation of requirements which in its turn asks for specific marketing methods in satisfying the requirements.

  5. Note from the Goods Reception services

    CERN Multimedia

    FI Department

    2008-01-01

    Members of the personnel are invited to take note that only parcels corresponding to official orders or contracts will be handled at CERN. Individuals are not authorised to have private merchandise delivered to them at CERN and private deliveries will not be accepted by the Goods Reception services. Goods Reception Services

  6. Exemplary Goods: Exemplars as Judgment Devices

    NARCIS (Netherlands)

    E. Dekker (Erwin)

    2016-01-01

    textabstractIn this article the notion of exemplars is developed to study valuation processes. It argues that exemplary goods are an important ‘judgment device’ on markets of singular goods, which has so far been ignored in the literature. The article draws on Hannah Arendt’s theory of exemplars, as

  7. Developing Ecological Models on Carbon and Nitrogen in Secondary Facultative Ponds

    Directory of Open Access Journals (Sweden)

    Aponte-Reyes Alexander

    2014-07-01

    Full Text Available Ecological models formulated for TOC, CO2, NH4+, NO3- and NTK, based in literature reviewed and field work were obtained monitoring three facultative secondary stabilization ponds, FSSP, pilots: conventional pond, CP, baffled pond, BP, and baffled-meshed pond, BMP. Models were sensitive to flow inlet, solar radiation, pH and oxygen content; the sensitive parameters in Carbon Model were KCOT Ba, umax Ba, umax Al, K1OX, VAl, R1DCH4, YBh. The sensitive parameters in the Nitrogen model were KCOT Ba, umax Ba, umax Al, VAl, KOPH, KOPA, r4An. The test t–paired showed a good simulating of Carbon model refers to TOC in FSSP; on the other side, the Nitrogen model showed a good simulating of NH4+. Different topological models modify ecosystem ecology forcing different transformation pathways of Nitrogen; equal transformations of the Carbon BMP topology could be achieved using lower volumes, however, a calibration for a new model would be required. Carbon and Nitrogen models developed could be coupled to hydrodynamics models for better modeling of FSSP.

  8. River Basin Muti-Stakeholder Platforms: the practice of 'good water governance' in Afghanistan.

    NARCIS (Netherlands)

    Thomas, V.; Warner, J.F.

    2014-01-01

    The article describes local realities and contextual circumstances in Afghanistan which are infuencing cooperation on water sharing during dry years. The contribution assesses the performance of multi-stakeholder platforms for water management as a ‘good' water governance model promoted by the

  9. Concept of ‘Good Urban Governance’ and Its Application in Sustainable Urban Planning

    Science.gov (United States)

    Badach, Joanna; Dymnicka, Małgorzata

    2017-10-01

    Contemporary urban theory and practice in the post-industrial era is increasingly often turning towards an approach based on sustainable development. That concept bearing the traits of a paradigm has grown on the ground of broad quest for an alternative to the existing development model of the industrial civilisation. It has gained wide social acceptance and is the basis for many development and environmental programmes at the level of national and local government. It puts in a new light the socio-cultural, ecological and energy-related aspects of space as well as its value and aesthetics. A model of governing the city called ‘good urban governance’ is in a very close relation with the concept of sustainable development. It is based on the principles of inclusiveness, citizenship, accountability, processuality and effectiveness. Although this approach is not entirely novel, it stays valid and open to new challenges connected with satisfying human needs in the urban built environment on the basis of new contemporary conceptualisations such as ‘smart governance’, ‘governing the smart city’, ‘network governance’ and ‘governance networks’. The advantages of this approach based on the assumption of multidimensionality and subjectivity, matching the various and seemingly contradicting interests with a sense of responsibility for the quality of life in the urban environment are often underlined both in literature and in academic debate. The aim of this article is an attempt to present selected practices in spatial planning which employ the principles of the idea of co-governance. It will include various methodological assumptions and criteria applied in ‘good urban governance’. The intention will be to show its new research and application possibilities in countries like Poland where the idea of governance and sustainable development remains a matter of theory.

  10. Capuchin monkeys do not show human-like pricing effects

    OpenAIRE

    Catapano, Rhia; Buttrick, Nicholas; Widness, Jane; Goldstein, Robin; Santos, Laurie R.

    2014-01-01

    Recent work in judgment and decision-making has shown that a good's price can have irrational effects on people's preferences. People tend to prefer goods that cost more money and assume that such expensive goods will be more effective, even in cases where the price of the good is itself arbitrary. Although much work has documented the existence of these pricing effects, unfortunately little work has addressed where these price effects come from in the first place. Here we use a comparative a...

  11. THE ATTITUDES TOWARD SPORT ADVERTISING AMONG THE QUESTION HOW OFTEN CONSUMERS PURCHASE SPORTING GOODS

    Directory of Open Access Journals (Sweden)

    Stevo Popović

    2011-08-01

    Full Text Available This research was aimed at gaining relevant knowledge about the attitudes toward sport advertising among the question how often consumers participate in sports activities The sample included 433 respondents, divided into six subsample groups: consumers who do not purchase sport goods at all, then consumers who purchase sport goods less than ones a month, next 1–3 a month, 4–6 a month, 7–9 a month, as well as consumers who purchase sport goods more than 10 times a months. The results of the measuring were analyzed by multivariate analysis (MANOVA and univariate analysis (ANOVA and Post Hoc test. Based on the results it was concluded that significant differences occur at multivariate level, as well as between all three variables at a significance level of p=.05. It is interesting to highlight that it was found that the significant differences showed up between the consumers who do not purchase sport goods at all with negative attitudes and consumers who purchase sport goods less than ones a months and more with positive attitudes toward sport advertising

  12. A Study of Simple Diffraction Models

    DEFF Research Database (Denmark)

    Agerkvist, Finn

    1997-01-01

    Three different models for calculating edge diffraction are examined. The methods of Vanderkooy, Terai and Biot & Tolstoy are compared with measurements. Although a good agreement is obtained, the measurements also show that none of the methods work completely satisfactorily. The desired properties...

  13. Modelling heat transfer during flow through a random packed bed of spheres

    Science.gov (United States)

    Burström, Per E. C.; Frishfelds, Vilnis; Ljung, Anna-Lena; Lundström, T. Staffan; Marjavaara, B. Daniel

    2018-04-01

    Heat transfer in a random packed bed of monosized iron ore pellets is modelled with both a discrete three-dimensional system of spheres and a continuous Computational Fluid Dynamics (CFD) model. Results show a good agreement between the two models for average values over a cross section of the bed for an even temperature profiles at the inlet. The advantage with the discrete model is that it captures local effects such as decreased heat transfer in sections with low speed. The disadvantage is that it is computationally heavy for larger systems of pellets. If averaged values are sufficient, the CFD model is an attractive alternative that is easy to couple to the physics up- and downstream the packed bed. The good agreement between the discrete and continuous model furthermore indicates that the discrete model may be used also on non-Stokian flow in the transitional region between laminar and turbulent flow, as turbulent effects show little influence of the overall heat transfer rates in the continuous model.

  14. Optimal Provision of Public Goods

    DEFF Research Database (Denmark)

    Kreiner, Claus Thustrup; Verdelin, Nicolaj

    There currently exist two competing approaches in the literature on the optimal provision of public goods. The standard approach highlights the importance of distortionary taxation and distributional concerns. The new approach neutralizes distributional concerns by adjusting the non-linear income...... tax, and finds that this reinvigorates the simple Samuelson rule when preferences are separable in goods and leisure. We provide a synthesis by demonstrating that both approaches derive from the same basic formula. We further develop the new approach by deriving a general, intuitive formula...

  15. Ductile Bulk Aluminum-Based Alloy with Good Glass-Forming Ability and High Strength

    International Nuclear Information System (INIS)

    Long-Chao, Zhuo; Shu-Jie, Pang; Hui, Wang; Tao, Zhang

    2009-01-01

    Based on a new approach for designing glassy alloy compositions, bulk Al-based alloys with good glass-forming ability (GFA) are synthesized. The cast Al 86 Si 0.5 Ni 4.06 Co 2.94 Y 6 Sc 0.5 rod with a diameter of 1 mm shows almost fully amorphous structure besides about 5% fcc-Al nucleated in the center of the rod. The bulk alloy with high Al concentration exhibits an ultrahigh yield strength of 1.18 GPa and maximum strength of 1.27 GPa as well as an obvious plastic strain of about 2.4% during compressive deformation. This light Al-based alloy with good GFA and mechanical properties is promising as a new high specific strength material with good deformability. (condensed matter: structure, mechanical and thermal properties)

  16. ASSESSMENT OF GOOD PRACTICES IN HOSPITAL FOOD SERVICE BY COMPARING EVALUATION TOOLS.

    Science.gov (United States)

    Macedo Gonçalves, Juliana; Lameiro Rodrigues, Kelly; Santiago Almeida, Ângela Teresinha; Pereira, Giselda Maria; Duarte Buchweitz, Márcia Rúbia

    2015-10-01

    since food service in hospitals complements medical treatment, it should be produced in proper hygienic and sanitary conditions. It is a well-known fact that food-transmitted illnesses affect with greater severity hospitalized and immunosuppressed patients. good practices in hospital food service are evaluated by comparing assessment instruments. good practices were evaluated by a verification list following Resolution of Collegiate Directory n. 216 of the Brazilian Agency for Sanitary Vigilance. Interpretation of listed items followed parameters of RCD 216 and the Brazilian Association of Collective Meals Enterprises (BACME). Fisher's exact test was applied to detect whether there were statistically significant differences. Analysis of data grouping was undertaken with Unweighted Pair-group using Arithmetic Averages, coupled to a correlation study between dissimilarity matrixes to verify disagreement between the two methods. Good Practice was classified with mean total rates above 75% by the two methods. There were statistically significant differences between services and food evaluated by BACME instrument. Hospital Food Services have proved to show conditions of acceptable good practices. the comparison of interpretation tools based on RCD n. 216 and BACME provided similar results for the two classifications. Copyright AULA MEDICA EDICIONES 2014. Published by AULA MEDICA. All rights reserved.

  17. Volunteering leads to rock-paper-scissors dynamics in a public goods game

    Science.gov (United States)

    Semmann, Dirk; Krambeck, Hans-Jürgen; Milinski, Manfred

    2003-09-01

    Collective efforts are a trademark of both insect and human societies. They are achieved through relatedness in the former and unknown mechanisms in the latter. The problem of achieving cooperation among non-kin has been described as the `tragedy of the commons', prophesying the inescapable collapse of many human enterprises. In public goods experiments, initial cooperation usually drops quickly to almost zero. It can be maintained by the opportunity to punish defectors or the need to maintain good reputation. Both schemes require that defectors are identified. Theorists propose that a simple but effective mechanism operates under full anonymity. With optional participation in the public goods game, `loners' (players who do not join the group), defectors and cooperators will coexist through rock-paper-scissors dynamics. Here we show experimentally that volunteering generates these dynamics in public goods games and that manipulating initial conditions can produce each predicted direction. If, by manipulating displayed decisions, it is pretended that defectors have the highest frequency, loners soon become most frequent, as do cooperators after loners and defectors after cooperators. On average, cooperation is perpetuated at a substantial level.

  18. Evolution of Cooperation in Public Goods Games

    International Nuclear Information System (INIS)

    Xia Chengyi; Zhang Juanjuan; Wang Jinsong; Wang Yiling

    2011-01-01

    We investigate the evolution of cooperation with evolutionary public goods games based on finite populations, where four pure strategies: cooperators, defectors, punishers and loners who are unwilling to participate are considered. By adopting approximate best response dynamics, we show that the magnitude of rationality not only quantitatively explains the experiment results in [Nature (London) 425 (2003) 390], but also it will heavily influence the evolution of cooperation. Compared with previous results of infinite populations, which result in two equilibriums, we show that there merely exists a special equilibrium and the relevant high value of bounded rationality will sustain cooperation. In addition, we characterize that loner's payoff plays an active role in the maintenance of cooperation, which will only be warranted for the low and moderate values of loner's payoff. It thus indicates the effects of rationality and loner's payoff will influence the cooperation. Finally, we highlight the important result that the introduction of voluntary participation and punishment will facilitate cooperation greatly. (general)

  19. Pitchcontrol of wind turbines using model free adaptivecontrol based on wind turbine code

    DEFF Research Database (Denmark)

    Zhang, Yunqian; Chen, Zhe; Cheng, Ming

    2011-01-01

    value is only based on I/O data of the wind turbine is identified and then the wind turbine system is replaced by a dynamic linear time-varying model. In order to verify the correctness and robustness of the proposed model free adaptive pitch controller, the wind turbine code FAST which can predict......As the wind turbine is a nonlinear high-order system, to achieve good pitch control performance, model free adaptive control (MFAC) approach which doesn't need the mathematical model of the wind turbine is adopted in the pitch control system in this paper. A pseudo gradient vector whose estimation...... the wind turbine loads and response in high accuracy is used. The results show that the controller produces good dynamic performance, good robustness and adaptability....

  20. Application of some turbulence models

    International Nuclear Information System (INIS)

    Ushijima, Sho; Kato, Masanobu; Fujimoto, Ken; Moriya, Shoichi

    1985-01-01

    In order to predict numerically the thermal stratification and the thermal striping phenomena in pool-type FBRs, it is necessary to simulate adequately various turbulence properties of flows with good turbulence models. This report presents numerical simulations of two dimensional isothermal steady flows in a rectangular plenum using three types of turbulence models. Three models are general k-ε model and two Reynolds stress models. The agreements of these results are examined and the properties of these models are compared. The main results are summarized as follows. (1) Concerning the mean velocity distributions, although a little differences exist, all results of three models agree with experimental values. (2) It can be found that non-isotropy of normal Reynolds stresses (u' 2 , v' 2 ) distributions is qwite well simulated by two Reynolds stress models, but not adequately by k-ε model, shear Reynolds stress (-u', v') distribations of three models have little differences and agree good with experiments. (3) Balances of the various terms of Reynolds stress equations are examined. Comparing the results obtained by analyses and those of previous experiments, both distributions show qualitative agreements. (author)

  1. Image based 3D city modeling : Comparative study

    Directory of Open Access Journals (Sweden)

    S. P. Singh

    2014-06-01

    Full Text Available 3D city model is a digital representation of the Earth’s surface and it’s related objects such as building, tree, vegetation, and some manmade feature belonging to urban area. The demand of 3D city modeling is increasing rapidly for various engineering and non-engineering applications. Generally four main image based approaches were used for virtual 3D city models generation. In first approach, researchers were used Sketch based modeling, second method is Procedural grammar based modeling, third approach is Close range photogrammetry based modeling and fourth approach is mainly based on Computer Vision techniques. SketchUp, CityEngine, Photomodeler and Agisoft Photoscan are the main softwares to represent these approaches respectively. These softwares have different approaches & methods suitable for image based 3D city modeling. Literature study shows that till date, there is no complete such type of comparative study available to create complete 3D city model by using images. This paper gives a comparative assessment of these four image based 3D modeling approaches. This comparative study is mainly based on data acquisition methods, data processing techniques and output 3D model products. For this research work, study area is the campus of civil engineering department, Indian Institute of Technology, Roorkee (India. This 3D campus acts as a prototype for city. This study also explains various governing parameters, factors and work experiences. This research work also gives a brief introduction, strengths and weakness of these four image based techniques. Some personal comment is also given as what can do or what can’t do from these softwares. At the last, this study shows; it concluded that, each and every software has some advantages and limitations. Choice of software depends on user requirements of 3D project. For normal visualization project, SketchUp software is a good option. For 3D documentation record, Photomodeler gives good

  2. Good Manufacturing Practices (GMP) manufacturing of advanced therapy medicinal products: a novel tailored model for optimizing performance and estimating costs.

    Science.gov (United States)

    Abou-El-Enein, Mohamed; Römhild, Andy; Kaiser, Daniel; Beier, Carola; Bauer, Gerhard; Volk, Hans-Dieter; Reinke, Petra

    2013-03-01

    Advanced therapy medicinal products (ATMP) have gained considerable attention in academia due to their therapeutic potential. Good Manufacturing Practice (GMP) principles ensure the quality and sterility of manufacturing these products. We developed a model for estimating the manufacturing costs of cell therapy products and optimizing the performance of academic GMP-facilities. The "Clean-Room Technology Assessment Technique" (CTAT) was tested prospectively in the GMP facility of BCRT, Berlin, Germany, then retrospectively in the GMP facility of the University of California-Davis, California, USA. CTAT is a two-level model: level one identifies operational (core) processes and measures their fixed costs; level two identifies production (supporting) processes and measures their variable costs. The model comprises several tools to measure and optimize performance of these processes. Manufacturing costs were itemized using adjusted micro-costing system. CTAT identified GMP activities with strong correlation to the manufacturing process of cell-based products. Building best practice standards allowed for performance improvement and elimination of human errors. The model also demonstrated the unidirectional dependencies that may exist among the core GMP activities. When compared to traditional business models, the CTAT assessment resulted in a more accurate allocation of annual expenses. The estimated expenses were used to set a fee structure for both GMP facilities. A mathematical equation was also developed to provide the final product cost. CTAT can be a useful tool in estimating accurate costs for the ATMPs manufactured in an optimized GMP process. These estimates are useful when analyzing the cost-effectiveness of these novel interventions. Copyright © 2013 International Society for Cellular Therapy. Published by Elsevier Inc. All rights reserved.

  3. What is Good Governance? World Bank and The Power of Normalization

    Directory of Open Access Journals (Sweden)

    Agus Wahyudi

    2015-12-01

    Full Text Available Tulisan ini memberikan penilaian kritis alas konsep Bank Dunia tentang 'Good Governance' (Kepemerintahan yang Balk dengan melibat konsep ini melalui pendekatan Foucauldian, yaitu bukan hanya sebagai fenomena pengetahuan tetapi jugs sebagai fenomena kekuasaan,yaitu kekuasaan untuk normalisasi. Penelaahan atas asal mula dan evolusi konsep ini menyarankan bahwa keberadaan konsep ini tidaklab netral dan bebas kepentingan dan karena itu sebenarnyajuga tidak selalu universal atau dapat diterapkan dalam semua keadaan. Pengen'ian Good Governance yang didefinisikan sebagai kebijaksaan ekonomi yang baik dan pembangunan kelembagaan yang kuat, pada alehirnya telab memperkuat pola-pola hegemoni dan kelembagaan global dan menghasilkan dominasi atau hegemonisasi dari pengetahuan' Bank Dunia (atau sebenarnyajuga ekonomi internasionalyang lain scperti IMF terhadap 'bentuk pengetahuanyang lain', dengan akibal bahwa model alternatif pembangunanyang lain akan terpinggirkan atau sama sekalipunah.

  4. Exploring Intergenerational Discontinuity in Problem Behavior: Bad Parents with Good Children

    Science.gov (United States)

    Dong, Beidi; Krohn, Marvin D.

    2014-01-01

    Using data from the Rochester Youth Development Study, a series of regression models are estimated on offspring problem behavior with a focus on the interaction between parental history of delinquency and the parent-child relationship. Good parenting practices significantly interact with the particular shape of parental propensity of offending over time, functioning as protective factors to protect against problematic behaviors among those who are most at risk. The moderation effects vary slightly by the age of our subjects. Accordingly, it is important to distinguish the effect of not only the level of parental delinquency at one point in time, but also the shape of the delinquency trajectory on outcomes for their children. Good parenting holds the hope of breaking the vicious cycle of intergenerational transmission of delinquency. PMID:26097437

  5. Indeterminacy, bifurcations and chaos in an overlapping generations model with negative environmental externalities

    International Nuclear Information System (INIS)

    Antoci, Angelo; Sodini, Mauro

    2009-01-01

    We analyze an overlapping generations model where agent's welfare depends on three goods: leisure, environmental quality and consumption of a private good. We assume that the production process of the private good depletes the natural resource and that the consumption of the private good alleviates the damages due to environmental deterioration. In such context, we show that individuals' reactions to environmental deterioration may lead to complex dynamics, in particular to the rise of periodic orbits and chaos.

  6. Brand Choice Modeling Modeling Toothpaste Brand Choice: An Empirical Comparison of Artificial Neural Networks and Multinomial Probit Model

    Directory of Open Access Journals (Sweden)

    Tolga Kaya

    2010-11-01

    Full Text Available The purpose of this study is to compare the performances of Artificial Neural Networks (ANN and Multinomial Probit (MNP approaches in modeling the choice decision within fast moving consumer goods sector. To do this, based on 2597 toothpaste purchases of a panel sample of 404 households, choice models are built and their performances are compared on the 861 purchases of a test sample of 135 households. Results show that ANN's predictions are better while MNP is useful in providing marketing insight.

  7. Men behaving nicely: public goods as peacock tails.

    Science.gov (United States)

    Van Vugt, Mark; Iredale, Wendy

    2013-02-01

    Insights from sexual selection and costly signalling theory suggest that competition for females underlies men's public good contributions. We conducted two public good experiments to test this hypothesis. First, we found that men contributed more in the presence of an opposite sex audience, but there was no parallel effect for the women. In addition, men's public good contributions went up as they rated the female observer more attractive. In the second experiment, all male groups played a five round public good game and their contributions significantly increased over time with a female audience only. In this condition men also volunteered more time for various charitable causes. These findings support the idea that men compete with each other by creating public goods to impress women. Thus, a public good is the human equivalent of a peacock's tail. © 2012 The British Psychological Society.

  8. A good farmer pays attention to the weather

    Directory of Open Access Journals (Sweden)

    Lois Wright Morton

    2017-01-01

    Full Text Available A key message of the 2014 US 3rd National Climate Assessment report is that climate change poses threats to agriculture and will require adaptation and mitigation by farmers. In the upper Midwest, the increase in total precipitation and a 37% increase in very heavy precipitation over the past 40 years are expected to continue and affect the productivity of corn-based cropping systems. The current situation and weather projections suggest that in the future, significant degradation of soil and water resources can be expected. While a number of adaptive management strategies have potential to address soil erosion, poor water quality, and production losses, farmer responses to a changing climate are not well understood. The research presented here examines how farmers’ self-identity as “a good farmer” can translate into specific incremental and transformative adaptations of farming strategies. Analysis of a 2012 survey of 4778 upper Midwest farmers finds that three nodes in the identity control model, the biophysical situation, reflected appraisals comprised of a set of beliefs which are sources of information input, and a farmer’s identities, influence variations in selected adaptive management practices. The biophysical situation (flooding, drought, saturated soils, and/or having a river run through the farm are significant explanatory variables in seven of the eight models and farmer’s identities, conservationist and/or productivist, are significant in all models. This is evidence that farmers are paying attention to the biophysical situation as well as being guided by their own understandings of themselves as good farmers in making decisions about their farm operation. More research is needed to better understand what activates identities, core values and beliefs and how some values are privileged over others in adaptive decisions. This work suggests that educators and policymakers should focus on interventions, incentives and

  9. Ideas and Inspirations: Good News about Diabetes Prevention and Management in Indian Country

    Medline Plus

    Full Text Available ... selected presentation recordings. Good news: Reduction in Kidney Failure in AI/AN People Exit Disclaimer: You Are ... ihs.gov showing a dramatic decrease in kidney failure from diabetes among American Indians and Alaska Natives. ...

  10. Luggage and shipped goods

    International Nuclear Information System (INIS)

    Vogel, H.; Haller, D.

    2007-01-01

    Summary: Purpose: Control of luggage and shipped goods are frequently carried out. The possibilities of X-ray technology shall be demonstrated. Materials and methods: There are different imaging techniques. The main concepts are transmission imaging, backscatter imaging, computed tomography, and dual energy imaging and the combination of different methods The images come from manufacturers and personal collections. Results: The search concerns mainly, weapons, explosives, and drugs; furthermore animals, and stolen goods, Special problems offer the control of letters and the detection of Improvised Explosive Devices (IED). Conclusion: One has to expect that controls will increase and that imaging with X-rays will have their part. Pattern recognition software will be used for analysis enforced by economy and by demand for higher efficiency - man and computer will produce more security than man alone

  11. Anti-piracy policy and quality differential in markets for information goods

    OpenAIRE

    Francisco Martínez-Sánchez; Javier M. López Cuñat

    2011-01-01

    In this paper we analyze the strategic decisions of the government, the incumbent and the pirate in a market where the good is piratable. We show that deterred or accommodated piracy can occur in equilibrium, but pure monopoly cannot occur for any anti-piracy policy. We also show that the initial quality differential between the original and the pirated product is essential to explain the effects of an increase in the quality of pirated product on both the level of piracy and the optimal moni...

  12. Risk Estimation for Lung Cancer in Libya: Analysis Based on Standardized Morbidity Ratio, Poisson-Gamma Model, BYM Model and Mixture Model

    Science.gov (United States)

    Alhdiri, Maryam Ahmed; Samat, Nor Azah; Mohamed, Zulkifley

    2017-03-01

    Cancer is the most rapidly spreading disease in the world, especially in developing countries, including Libya. Cancer represents a significant burden on patients, families, and their societies. This disease can be controlled if detected early. Therefore, disease mapping has recently become an important method in the fields of public health research and disease epidemiology. The correct choice of statistical model is a very important step to producing a good map of a disease. Libya was selected to perform this work and to examine its geographical variation in the incidence of lung cancer. The objective of this paper is to estimate the relative risk for lung cancer. Four statistical models to estimate the relative risk for lung cancer and population censuses of the study area for the time period 2006 to 2011 were used in this work. They are initially known as Standardized Morbidity Ratio, which is the most popular statistic, which used in the field of disease mapping, Poisson-gamma model, which is one of the earliest applications of Bayesian methodology, Besag, York and Mollie (BYM) model and Mixture model. As an initial step, this study begins by providing a review of all proposed models, which we then apply to lung cancer data in Libya. Maps, tables and graph, goodness-of-fit (GOF) were used to compare and present the preliminary results. This GOF is common in statistical modelling to compare fitted models. The main general results presented in this study show that the Poisson-gamma model, BYM model, and Mixture model can overcome the problem of the first model (SMR) when there is no observed lung cancer case in certain districts. Results show that the Mixture model is most robust and provides better relative risk estimates across a range of models. Creative Commons Attribution License

  13. Parametric modelling of nonstationary platform deck motions

    Digital Repository Service at National Institute of Oceanography (India)

    Mandal, S.

    with fast Fourier transform spectra and show good agreement. However, the higher order maximum entropy model can be used for better representation of nonstationary motions. This method also reduces long time series of nonstationary offshore data into a few...

  14. Capuchin monkeys do not show human-like pricing effects

    Science.gov (United States)

    Catapano, Rhia; Buttrick, Nicholas; Widness, Jane; Goldstein, Robin; Santos, Laurie R.

    2014-01-01

    Recent work in judgment and decision-making has shown that a good's price can have irrational effects on people's preferences. People tend to prefer goods that cost more money and assume that such expensive goods will be more effective, even in cases where the price of the good is itself arbitrary. Although much work has documented the existence of these pricing effects, unfortunately little work has addressed where these price effects come from in the first place. Here we use a comparative approach to distinguish between different accounts of this bias and to explore the origins of these effects. Specifically, we test whether brown capuchin monkeys (Cebus apella) are also susceptible to pricing effects within the context of an experimentally trained token economy. Using a capuchin population previously trained in a token market, we explored whether monkeys used price as an indicator of value across four experiments. Although monkeys demonstrated an understanding of which goods had which prices (consistently shifting preferences to cheaper goods when prices were increased), we observed no evidence that such price information affected their valuation of different kinds of goods. These results suggest that human pricing effects may involve more sophisticated human-unique cognitive capacities, such as an understanding of market forces and signaling. PMID:25520677

  15. Capuchin monkeys do not show human-like pricing effects.

    Science.gov (United States)

    Catapano, Rhia; Buttrick, Nicholas; Widness, Jane; Goldstein, Robin; Santos, Laurie R

    2014-01-01

    Recent work in judgment and decision-making has shown that a good's price can have irrational effects on people's preferences. People tend to prefer goods that cost more money and assume that such expensive goods will be more effective, even in cases where the price of the good is itself arbitrary. Although much work has documented the existence of these pricing effects, unfortunately little work has addressed where these price effects come from in the first place. Here we use a comparative approach to distinguish between different accounts of this bias and to explore the origins of these effects. Specifically, we test whether brown capuchin monkeys (Cebus apella) are also susceptible to pricing effects within the context of an experimentally trained token economy. Using a capuchin population previously trained in a token market, we explored whether monkeys used price as an indicator of value across four experiments. Although monkeys demonstrated an understanding of which goods had which prices (consistently shifting preferences to cheaper goods when prices were increased), we observed no evidence that such price information affected their valuation of different kinds of goods. These results suggest that human pricing effects may involve more sophisticated human-unique cognitive capacities, such as an understanding of market forces and signaling.

  16. USSR Report: Consumer Goods and Domestic Trade

    National Research Council Canada - National Science Library

    1985-01-01

    .... This document contains articles on consumer goods and domestic trade within the USSR. Topics include: consumer goods production and distribution, housing and personal services, and consumer sector policy and economics.

  17. Bounded rationality leads to equilibrium of public goods games

    Science.gov (United States)

    Xu, Zhaojin; Wang, Zhen; Zhang, Lianzhong

    2009-12-01

    In this work, we introduce a degree of rationality to the public goods games in which players can determine whether or not to participate, and with it a new mechanism has been established. Existence of the bounded rationality would lead to a new equilibrium which differs from the Nash equilibrium and qualitatively explains the fundamental role of loners’ payoff for maintaining cooperation. Meanwhile, it is shown how the potential strategy influences the players’ decision. Finally, we explicitly demonstrate a rock-scissors-paper dynamics which is a consequence of this model.

  18. Good is not good enough: the culture of low expectations and the leader's challenge.

    Science.gov (United States)

    Kerfoot, Karlene M

    2009-01-01

    When people believe that what they do is "good enough," excellence will never occur. As the demand for better health care escalates every year, achieving a ranking of very good doesn't count because it leaves many disenfranchised staff, errors, and dissatisfied patients. A leader can not be successful unless the culture of low expectations is eliminated. If there isn't a sense of caring, serving, and being an exemplar of the change, the leader won't succeed in moving the culture. When there is a sense of ownership and commitment to the mission and to patients, the culture of low expectations cannot exist.

  19. Multivariate Modelling of Extreme Load Combinations for Wind Turbines

    DEFF Research Database (Denmark)

    Dimitrov, Nikolay Krasimirov

    2015-01-01

    into a periodic part and a perturbation term, where each part has a known probability distribution. The proposed model shows good agreement with simulated data under stationary conditions, and a design load envelope based on this model is comparable to the load envelope estimated using the standard procedure...

  20. Stochastic Modeling and Deterministic Limit of Catalytic Surface Processes

    DEFF Research Database (Denmark)

    Starke, Jens; Reichert, Christian; Eiswirth, Markus

    2007-01-01

    of stochastic origin can be observed in experiments. The models include a new approach to the platinum phase transition, which allows for a unification of existing models for Pt(100) and Pt(110). The rich nonlinear dynamical behavior of the macroscopic reaction kinetics is investigated and shows good agreement...