bluuebunny/crossref_metadata_2025 huggingface dataset:
Spatial Dimensions of the Unemployment Rate in Jordan 2008
Authors: Khamis Faisal G.
Published: September 2017

Although many studies examined the existence of spatial pattern of unemployment in some developing and many developed countries in improving the prosperity or social status and reducing the inequalities in unemployment between areas of such country, there is still much work to be done. Some of these studies found spatial pattern for unemployment using different statistical techniques and geographical mapping. The question is raised whether such a spatial pattern exists in Jordan? The objective is to investigate the spatial structure of unemployment rate (UR) across different governoratesto provide implications for policy makers, investigating the hot spots of UR and showing optical picture of UR. The study design is cross-sectional, where the data are collected for 12 governorates based on the census in 2008. A mapping using quartiles is used as a first step to conduct a visual inspection of UR. Two statistics of spatial autocorrelation, based on sharing boundary neighbours, known as global and local Moran’s I, were carried out for examining the global clustering and local clusters, respectively. Out of 12, three governorates (Balqa, Zarqa, and Tafiela) are found as local clusters in UR. In conclusion, the UR varies in the visual inspection based on choropleth mapping across different governorates with black spots in the northwestern, central and southeastern part of the country. Statistically, no significant global clustering can be found, but several significant local clusters are found in the central and western part of the country.
FIDE Chess Network
Authors: Breznik Kristijan , Batagelj Vladimir
Published: September 2017

The game of chess has a long and rich history. In the last century it has been closely connected to the world chess federation FIDE1. This paper analyses all of the rated chess games published on the FIDE website from January 2008 to September 2010 with network analytic methods. We discuss some players and game properties, above all the portion of games played between the world’s best chess players and the frequency of games amongcountries. Additionally, our analysis confirms the already known advantage of white pieces in the game of chess. We conclude that some modifications in the current system should appear in the near future.
Test Statistics for Parameter Changes in INAR(p) Models and a Simulation Study
Authors: Szabó Tamás T.
Published: September 2017

In the paper a change detection procedure is introduced for integervalued autoregressive processes which are inspired by the ordinary autoregressive model. The power of the test is investigated in a simulation study to determine how effectively it can detect changes in the key parameters of the process.
Austrian LFS Monthly Unemployment Rates
Authors: Gumprecht Daniela , Haslinger Alois , Kowarik Alexander
Published: September 2017

Since January 2011 Statistics Austria publishes monthly unemployment rates according to international definitions. Data stem solely from the Labour Force Survey and do not include any further information like national unemployment figures. Monthly unemployment rates are based on an adopted weighting scheme derived from the standard weighting schemefor quarterly data. This procedure allows computing flash as well as final monthly unemployment estimates. Flash estimates are available in time to be used for Eurostat’s harmonized unemployment statistics which are part of the Principle European Economic Indicator set. Eurostat publishes monthly unemployment rates for the whole population as well as for some subgroups. Unadjusted values, seasonally adjusted values and trends components are available in the Eurostat’s data warehouse ‘new cronos’. Most of Austrians(non-adjusted) monthly unemployment series (based on LFS data only) show no seasonal pattern and rather high volatility, especially series of small subgroups are quite erratic. Standard seasonal adjustment techniques recommended by Eurostat do not fit the specific Austrian situation. Therefore a new approach which is a compromise between the needs of Eurostat and the available data is pursued. Instead of applying seasonal adjustment techniques, trend calculations are carried out. Trend components are used as (seasonally)adjusted values.
Book Reviews
Authors: Richter Josef , Leisch Friedrich
Published: September 2017

Heinz GROHMANN, Walter KRÄMER, und Almut STEGER (Herausgeber) (2011).Statistik in Deutschland; 100 Jahre Deutsche Statistische Gesellschaft. Springer Verlag,Heidelberg, Dordrecht, London, New York, 262 Seiten, gebunden, ISBN 978-3-642-15634-2 (e46.21)Johann BACHER, Andreas PÖGE und Knut WENZIG (2010). Clusteranalyse: Anwendungsorientierte Einführung in Klassifikationsverfahren (3. Auflage). OldenbourgVerlag München, 538 Seiten, Broschur, ISBN 978-3-486-58457-8 (e39.80)
Computing Robust Regression Estimators: Developments since Dutter (1977)
Authors: Gschwandtner Moritz , Filzmoser Peter
Published: September 2017

The proposal ofMestimators for regression (Huber, 1973) and the development of an algorithm for its computation (Dutter, 1977) has lead to an increased activity for further research in this area. New regression estimators were introduced that combine a high level of robustness with high efficiency. Also fast algorithms have been developed and implemented in several software packages. We provide a review of the most important methods, and compare the performance of the algorithms implemented in R .
Various Characterizations of Modified Weibull and Log-Modified Weibull Distributions
Authors: Hamedani G.G.
Published: September 2017

Various characterizations of the well-known modifiedWeibull and log-modifiedWeibull distributions are presented. These characterizations are based on a simple relationship between two truncated moments; on the hazard function and on functions of the order statistics.
A Methodology for Predictive Maintenance in Semiconductor Manufacturing
Authors: Scheibelhofer Peter , Gleispach Dietmar , Hayderer Günter , Stadlober Ernst
Published: September 2017

In order to occupy a competitive position in semiconductor industry the most important challenges a fabrication plant has to face are the reduction of manufacturing costs and the increase of production yield. Predictive maintenance is one possible way to address these challenges. In this paper we present an implementation of a universally applicable methodology based on the theory of regression trees and Random Forests to predict tool maintenance operations. We exemplarily show the application of the method by constructing a model for predictive maintenance of an ion implantation tool. To fit theproblem adequately and to allow a descriptive interpretation we introduce the remaining time until next maintenance as a response variable. By using R and adequately analyzing data acquired during wafer processing a Random Forest model is constructed. We can show that under typical production conditionsthe model is able to predict a recurring maintenance operation sufficiently accurate. This example shows that better planning of maintenance operations allows for an increase in productivity and a reduction of downtime costs.
Estimation of P(Y < X) in a Four-Parameter Generalized Gamma Distribution
Authors: Masoom Ali M. , Pal Manisha , Woo Jungsoo
Published: September 2017

In this paper we consider estimation of R = P(Y < X), when X and Y are distributed as two independent four-parameter generalized gamma random variables with same location and scale parameters. A modified maximum likelihood method and a Bayesian technique have been used to estimate R on the basis of independent samples. As the Bayes estimator cannot be obtained in a closed form, it has been implemented using importance sampling procedure. A simulation study has also been carried out to compare the two methods.
Bayesian Analysis of Randomly Censored Generalized Exponential Distribution
Authors: Danish Muhammad Yameen , Aslam Muhammad
Published: September 2017

This paper deals with Bayesian analysis of two-parameter generalized exponential distribution in proportional hazards model of random censorship. It is well known for two-parameter lifetime distributions that continuous conjugate priors for the parameters do not exist; we assume independent gamma priors for the scale and shape parameter. It is seen that the closed-form expressions for the Bayes estimators cannot be obtained; we suggest Tierney-Kadane’s approximation to obtain the Bayes estimates. However with this method, it is not possible to construct the HPD credible intervals, we propose Gibbs sampling procedure to approximate the Bayes estimates and also to construct the HPD credible intervals. Monte Carlo simulationis carried out to observe the behavior of the proposed methods and to compare with maximum likelihood method. One real data analysis is performed for illustration.
Statistical Indicators for the Analysis of Digitalized Brain Tumor Images
Authors: Templ Matthias , Aklan Semaguel , Filzmoser Peter , Preusser Matthias , Hainfellner Johannes A.
Published: September 2017

In this contribution, indicators for computer-based analysis and assessment of tumor cell proliferation in human brain tumors are developed. The methods are applied on (two) samples of digitized human brain tumor tissue sections immunostained with an antibody against the Ki67 epitope. The Ki67 immunostaining highlights cells undergoing cell division and is thus a surrogate marker for tumor growth.The challenges are related to the enormous size of the images (“big data”) analyzed, some of them are larger than 100 GB. Thus, efficient methods to extract relevant information have to be applied.Before starting with the statistical analysis, the digitized images are preprocessed to extractthe highlighted cells. Then the distribution of Ki67 immunostaining patterns is analyzed. Starting with a bivariate kernel density estimation, the proposed indicators are used to evaluate and compare the resulting density estimates. Moreover, the spatial distribution of clusters of Ki67-labeled tumor cells is of particular interest.The results allow to evaluate and compare images or sectors of the images. This evaluation and comparisons of samples or sectors could turn out to be useful in practice since it allows for a pre-selection of interesting sectors and samples. Thus, the time-consuming part of manual inspection of the hugeimages could be reduced.
Eine empirische Studie zur Verifikation von Unterschriften und zur Indikation von Fälschungen
Authors: Wälder Olga , Kutzner Tobias
Published: September 2017

Eine zufällige Stichprobe von Unterschriften, die auf mobilen Geräten mit Touch-Screen Display erzeugt wurde, soll hinsichtlich ihrer Verifikation untersucht werden. Zu diesem Zweck wurden verschiedeneKlassifizierungsalgorithmen verwendet und miteinander verglichen. Ein weiterer Datensatz wurde erfolgreich auf Indikation der Fälschungen untersucht. Zudem wird in diesem Beitrag eine Transformation der ursprünglichen Variablen beschrieben, die zur Erhöhung der Qualität sowohl der Verifikation,als auch der Indikation der Fälschung beigetragen hat.
Book Reviews: Rehman M. KHAN (2013). Problem Solving and Data Analysis using Minitab — A Clear and Easy Guide to Six Sigma Methodology.
Authors: Viertl R.
Published: September 2017

Rehman M. KHAN (2013). Problem Solving and Data Analysis using Minitab — A Clear and Easy Guide to Six Sigma Methodology. (Wiley Series in Probability and Statistics), John Wiley & Sons Ltd, Chichester, UK, 484 Seiten, gebunden, ISBN 978-1-118-30757-1 (cloth) (e57.60)
Book Reviews: Sharon Bertsch MCGRAYNE (2014). Die Theorie, die nicht sterben wollte.
Authors: Stadlober Ernst
Published: September 2017

Wie der englische Pastor Thomas Bayes eine Regel entdeckte, die nach 150 Jahren voller Kontroversen heute aus Wissenschaft, Technik und Gesellschaft nicht mehr wegzudenken ist.Springer Spektrum, 2014, XIV+365 S., EUR 30,83. ISBN 978-3-642-37769-3
Estimations of various antioxidants in oral cancer patients in comparison with smokers and non-smokers - a biochemical study
Authors: Madhulatha G. , Venkateswarlu N. , Das Satrupa , . Vikramaditya
Published: October 2017

Background: Oral cancer is one of the most fatal health problems faced by the mankind today. Oral cancer ranks as the eighth most common cancer in developing countries. A high incidence of oral cancer is observed in the Indian sub-continent which accounts for one third of the world burden. In India, because of cultural, ethnic, geographic factors and the popularity of addictive habits, the frequency of oral cancer is high. It is estimated that about 56 thousand new cases are reported each year in India resulting in about one lakh individuals suffering from the disease at any given time. Cancer or precancer states can be found in individuals who are non-smokers and quid chewers. The possibility of alteration of various antioxidant levels due to presence of carcinogens in the blood plays a key role in the development of malignant states.Methods: The material for the present study comprise of 50 subjects selected at randomly. After recording history regarding habits, thorough clinical examination the patients clinically diagnosed as oral cancer underwent biopsy to confirm histopathologically. A total of 2.5ml ml of blood was drawn from the mid-cubital vein with necessary aseptic precautions and transferred to sterile vacutainers. Serum was separated immediately by centrifugation at 2000rpm for 15mins for the estimation of antioxidants namely ceruloplasmin, malondialdehyde, glutathione using photometric method.Results: The mean values of Ceruloplasmin (the mean values for controls 32.87, oral cancer 40.49), Glutathione (controls 4.46 oral cancer 5.55), malondialdehyde (controls 2.97, oral cancer 4.34) were compared using students t-test. The mean values of antioxidants were significantly increased in cancer compared to controls (pvalue < 0.05), It can be observed from the results that values of enzyme increased from controls to Oral cancer.Conclusions: It can be stated with our study that the antioxidant defence mechanism constitute a very important defence system against the free radical injury of the cells. The antioxidants come into play not only during minor free radical injurious process but also when the malignancy develops. Hence the antioxidants play a vital role as valuable markers in diagnosing oral cancer.
Asymmetric apodization for the comma aberrated point spread function
Authors:   Samara National Research University, Reddy A. , Sagar D. ,   Optics Research Group, Department of Physics, University College of Science, Osmania University, Khonina S. ,   Samara National Research University,   Image Processing Systems Institute – Branch of the Federal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences
Published: September 2017

This paper deals with the study of light flux distributions in the point spread function formed by an optical system with a one-dimensional aperture under the influence of the coma aberration. The traditional design of an asymmetric optical filter improves the resolution of a diffraction-limited optical imaging system. In this approach we explore the control of monochromatic aberrations through pupil engineering with asymmetric apodization. This technique employs the amplitude and phase apodization for the mitigation of the effects of third-order aberrations on the diffracted image. On introducing the coma wave aberration effect, the central peak intensity in the field of diffraction is a function of the edge strips width and the amplitude apodization parameter of a one-dimensional pupil filter, whereas the magnitude of the reduction of optical side-lobes is a function of the degree of phase apodization at the periphery of the aperture. The analytically computed results are illustrated graphically in terms of point spread function curves under various considerations of the coma aberrations and a different degree of amplitude and phase apodization. Hence, for the optimum values of apodization, the axial resolution has been analyzed using well-defined quality criteria.
Features of changes in the nanostructure and colorizing of copper during scanning with a femtosecond laser beam
Authors:   Vienna University of Technology, Liedl G. , Pospichal R. ,   Vienna University of Technology, Murzin S. ,   Samara National Research University
Published: September 2017

We have studied the nanostructuring and colorizing of the copper surface by scanning with a femtosecond laser beam with a near-Gaussian beam profile. The experimental studies were conducted using a femtosecond laser comprising a Ti:Sapphire oscillator and a multi-pass amplifier with the maximum pulse energy of 0.7 mJ, pulse frequency of 1 kHz, and pulse duration <30 fs. It is shown that the use of a short-pulsed femtosecond laser leads to the formation of wavelength scale periodic surface structures and eventually increases the brightness of the color of the copper surface. It is revealed that via reciprocally scanning the copper surface by multiple ultrashort laser pulses with a weakly asymmetric spatial energy density distribution and an energy density below the material ablation threshold, it is possible to create a combined nanostructure composed of low-spatial-frequency laser-induced periodic surface structures coated with nanoscale roughness. It is shown that relatively minor changes in the nanostructures obtained by scanning the copper surface by multiple ultrashort laser pulses can lead to a significant change in the color during surface colorizing.
Mapping and evaluating urban density patterns in Moscow, Russia
Authors:   Samara National Research University, Choudhary K. , Boori M. ,   Samara National Research University,   American Sentinel University,   Bonn University, Kupriyanov A. ,   Samara National Research University,   Image Processing Systems Institute – Branch of the Federal Scientific Research Centre“Crystallography and Photonics” of Russian Academy of Sciences
Published: September 2017

The defense of the notion of ‘compact city’ as a strategy to reduce urban sprawl to support greater utilization of existing infrastructure and services in more compact areas and to improve the connectivity of employment hubs is actively discussed in urban research. Using the urban residential density as a surrogate measure for urban compactness, this paper empirically examines a cadaster database that contains details of every property with a view of capturing changes in urban residential density patterns across Moscow using geospatial techniques. The policy of densification in chase of a more compact city has produced mixed results. Findings of this study signal that the urban densities across the buffer zones around Moscow city are significantly different. The Landsat images from 1995, 2005 and 2016 are classified based on the maximum likelihood to expand the land use/cover maps and identify the land cover. Then, the area coverage for all the land use/cover types at different points in time is combined with the distance from the city center. After that, urbanization densities from the city center toward the outskirts for every 1-km distance from 1 to 60 km are calculated. The city density on the distance of 1 to 35 km is found to be very high in the years 1995 to 2016. As usual, the population, traffic conditions, industrialization and government policy are the major factors that influenced the urban expansion.
Aerial vehicles detection and recognition for UAV vision system
Authors:   Ryazan State Radio Engineering University, Muraviev V. , Smirnov S. ,   Ryazan State Radio Engineering University, Strotov V. ,   Ryazan State Radio Engineering University
Published: September 2017

This article focuses on aerial vehicle detection and recognition by a wide field of view monocular vision system that can be installed on UAVs (unmanned aerial vehicles). The objects are mostly observed on the background of clouds under regular daylight conditions. The main idea is to create a multi-step approach based on a preliminary detection, regions of interest (ROI) selection, contour segmentation, object matching and localization. The described algorithm is able to detect small targets, but unlike many other approaches is designed to work with large-scale objects as well. The suggested algorithm is also intended to recognize and track the aerial vehicles of specific kind using a set of reference objects defined by their 3D models. For that purpose a computationally efficient contour descriptor for the models and the test objects is calculated. An experimental research on real video sequences is performed. The video database contains different types of aerial vehicles: airplanes, helicopters, and UAVs. The proposed approach shows good accuracy in all case studies and can be implemented in onboard vision systems.
Food vulnerability analysis in the central dry zone of Myanmar
Authors:   Samara National Research University, Boori M. ,   American Sentinel University,   Bonn University, Choudhary K. ,   Samara National Research University, Paringer R. ,   Samara National Research University,   Image Processing Systems Institute – Branch of the Federal Scientific Research Centre“Crystallography and Photonics” of Russian Academy of Sciences, Evers M. ,   Bonn University
Published: September 2017

The central dry zone of Myanmar is the most water stressed and also one of the most food insecure regions in the country. In the Dry Zone, the total population is 10.1 million people in 54 townships, in which approximately 43 % of people live below the poverty line and 40 – 50 % of the rural population is landless. Agriculture is the most important economic sector in Myanmar as it is essential for the national food security and a major source of livelihood of the people. In this region the adverse effects of climate change such as a late or early onset of the monsoon season, longer dry spells, erratic rainfall, increasing temperatures, heavy rains, stronger typhoons, extreme spatial-temporal variability of rainfall, high intensities, limited rainfall events in the growing season, heat stress, drought, flooding, sea water intrusion, land degradation, desertification, deforestation, and other natural disasters are believed to be major constraints to food security. Theses extreme climatic events are likely to increase in frequency and magnitude, leading to serious drought periods and extreme floods. Food insecurity is an important thing that must be reviewed because it affects the lives of many people. For food vulnerability, we use the following indicators: slope, precipitation, vegetation, soil, erosion, land degradation and harvest failure in ArcGIS software. The erosion is influenced by rainfall and slope, while land degradation is directly related to vegetation, drainage and soil. In the meantime, the harvest failure can be generated by rainfall and flood potential zones. The results show that around 45 % of the area studied comes under a very high erosion danger level, 70 % are in the average harvest failure zone, 59 % are in the intermediate land degradation area, and overall around 45 % of the studied area comes under the insecure food vulnerability zone. Our analysis shows that an increase in the alluvial farming by 1745.33 km2 since 1988 has helped reduce the insecure food vulnerability. The food vulnerability map is also relevant to increased population and low income areas. This paper is helpful for identifying the areas of food needs in central dry zone of Myanmar.
Vortex-free laser beam with an orbital angular momentum
Authors:   Image Processing Systems Institute of the RAS – Branch of the FSRC “Crystallography and Photonics” RAS, Kotlyar V. ,   Samara National Research University, Kovalev A. ,   Image Processing Systems Institute of the RAS – Branch of the FSRC “Crystallography and Photonics” RAS,   Samara National Research University
Published: September 2017

We show that if one cylindrical lens is placed in the Gaussian beam waist and another cylindrical lens is placed at some distance from the first one and rotated by some angle, then the laser beam after the second lens has an orbital angular momentum (OAM). An explicit analytical expression for the OAM of such a beam is obtained. Depending on the inter-lens distance, the OAM can be positive, negative, or zero. Such a laser beam has no isolated intensity nulls with a singular phase and it is not an optical vortex, but has an OAM. By choosing the radius of the beam waist of the source Gaussian beam, the focal lengths of the lenses and the distance between them, it is possible to generate a vortex-free laser beam equivalent to an optical vortex with a topological charge of several hundreds.
INFORMAÇÕES CONTÁBEIS DE MUNICÍPIOS: SUPERAÇÃO DE ERROS ATRAVÉS DA GESTÃO DO CONHECIMENTO
Authors: Bezerra Sueli Da Silva , Lima Marisete Fernandes de , Paiva Simone Bastos
Published: September 2017

O estudo tem como objetivo propor ações de superação dos erros recorrentes nas informações contábeis, evidenciados nas prestações de contas municipais, alinhadas à Gestão do Conhecimento nas unidades contábeis municipais. Caracteriza-se como um estudo descritivo, qualitativo e de campo. Realizou-se a coleta dos dados através de entrevistas semiestruturadas, junto a contadores e técnicos de controle externo do Tribunal de Contas do Estado da Paraíba (TCE-PB) e análise documental. Os resultados mostraram que os erros nas informações contábeis têm como principais fatores causadores: falta de preparo técnico dos operadores contábeis nas prefeituras, ausência de informações, não apresentação de documentação em tempo oportuno para o registro contábil e falta de incentivo para a atualização profissional dos operadores. As principais propostas decorrentes da pesquisa são no sentido de que as unidades contábeis municipais realizem mapeamento do conhecimento existente, desenvolvam competências técnicas e informacionais e criem repositórios de conhecimento.
POLÍTICA DE ASSISTÊNCIA SOCIAL NO BRASIL: AVANÇOS E DESAFIOS NO PÓS-CONSTITUIÇÃO DE 1988
Authors: Cunha Wellington Alvim da
Published: September 2017

Os últimos 25 anos no contexto brasileiro foram marcadas por profundas transformações políticas sociais, tendo como pano de fundo a democratização e a reforma do Estado. Este ensaio teórico, por sua vez, busca compreender os direcionamentos e a natureza da política de assistência social nesse período, a partir da análise dos diferentes governos e o trato das questões sociais, objetivando compreender as opções adotadas pelo Estado brasileiro. Para tanto, buscou-se contextualizar as características centrais da política de assistência social nas décadas de 1990, 2000 e 2010. Nesta perspectiva, efetuou-se uma pesquisa bibliográfica apresentando o desenvolvimento da política de assistência social posterior a Constituição de 1988, destacando as contribuições e particularidades dos diferentes governos. Pode-se verificar que a gestão Política de Assistência Social obteve grandes avanços com leis, programas, projetos e serviços. Verificou-se, que algumas das principais avanços nesses vinte e cinco anos são: i) maior participação social no controle das políticas sociais, ii) institucionalização e regulamentação dos marcos da política de assistência social, de leis, decretos e normas; iii) Criação de programas de transferência de renda iv) adoção de um Sistemas Único de gestão e organização da assistência social; iv) maior disponibilidade de recursos orçamentários para as políticas sociais, de forma a que estas possam ser suficientemente massivas frente ao contingente de pobreza a ser enfrentado; v) intensificação de práticas intersetoriais, com a busca de uma integração cada vez maior de programas e ações; vi) realização sistemática monitoramento e avaliação das políticas sociais. Por fim, percebeu-se que nessas duas décadas e meia, as ações do governo federal, estaduais e municipais envidaram esforços para a implementação, expansão e consolidação de uma ampla rede de proteção e promoção social, fato que tem permitido o país avançar nos indicadores sociais, no enfrentamento da pobreza, da fome e da desigualdade, e também a incidência de vulnerabilidades e riscos sociais que atingem as famílias e indivíduos.
ESPIRITUALIDADE EM EMPRESAS DE SEGURANÇA PRIVADA
Authors: Paula Jean Carlos Rodrigues de , Tassigny Mônica Mota , Brasil Marcus Vinícius de Oliveira , Bizarria Fabiana Pinto de Almeida , Frota Antônio Jackson Alcantara
Published: September 2017

O artigo  analisa a percepção de espiritualidade de gestores de empresas de segurança privada com suporte nos princípios de vida interior, comunidade e voltada para a compreensão do significado do trabalho. Realizou-se um survey com 52 gestores executivos de empresas de segurança privada da Cidade de Fortaleza-Ceará, tendo como instrumento de pesquisa a escala de Ashmos e Duchon (2000). Por meio de análise fatorial exploratória inferiu-se como resultados valores organizacionais associados à espiritualidade e voltados para a comunidade. O uso de princípios como “vida interior” ou relacionados com o entendimento sobre o “significado do trabalho” foram também evidenciados. Concluiu-se que os gestores reconhecem sua vida interior como parte de sua realização profissional. Embora, ainda associem espiritualidade a religião. Por fim, pode-se inferir que a compreensão de que há espiritualidade favorece o sentimento de totalidade e conectividade do papel construtivo da empresa.
Os relatos de viagem do século xix como fontes históricas para a prática do Ensino de História da América: algumas considerações teórico-metodológicas
Authors: Paulino Carla Viviane
Published: October 2017

O presente artigo busca discutir os possíveis tratamentos e análises dos relatos de viagens como fonte documental para o professor de História. Para tanto, busca tecer considerações teórico-metodológicas sobre o trabalho com esse tipo de documento e, a fim de elucidar possibilidades de interpretações de seus usos em sala de aula, discute alguns relatos de viagem com o objetivo de demonstrar os possíveis usos e direcionamentos do documento pelo professor.
Keeping The Physical Educator “Connected” An Examination Of Comfort Level, Usage And Professional Development Available For Technology Integration In The Curricular Area Of Physical Education
Authors: Adkins Megan , Bice Matthew  R. , Worrell Vicki , Unruh Nita
Published: September 2017

Schools continue to integrate the use of technology, and gymnasiums are not an exception.  The purpose of the study was to determine the comfort level of Physical Education teachers integrating technology in the gymnasium, determine types of professional development provided for technology use, and potential barriers associated with technology usage. A survey of 179 practicing Physical Education teachers located in the Midwest completed an online questionnaire. Results indicated Physical Education teachers were comfortable integrating technology but reported inadequate professional develop on technology device implementation.  These findings suggest Physical Educators are willing to integrate technology but the professional development and resources available to accomplish this is lacking. Future research should examine PETE program offerings, and additional PD opportunities offered by SHAPE America within the area of technology and Physical Education.
Organizational Justice In Higher Education: Perceptions Of Taiwanese Professors And Staffs
Authors: Yang Jason Cheng-Cheng , Cho I-Pei
Published: September 2017

Higher education in Asia is becoming more prominent according to Western higher education researchers, but it is also being influenced by globalization, resulting in two types of structural inequality in higher education. Organizational justice relates to positive developments of educational organizations. It refers to the sense of fairness and equality on aspects of organization policies and regulations relating to individual interests perceived by organizations’ internal members. This research first reviews the related literature to identify internal factors in the concept of organizational justice in higher education. The author designed a survey questionnaire to assess professors’ perceptions of organizational justice at their universities. The author sent out the questionnaires to Taiwanese professors with different research expertise at different universities. This research divided organizational justice into distributive justice, procedure justice, interpersonal justice, and information justice. Ultimately, 180 valid questionnaires were collected and analyzed. Four background variables (gender, age, position, and institutional type) showed statistical correlations with organizational justice in Taiwan’s higher education institutions.
Online, Blended And Technology-Enhanced Learning: Tools To Facilitate Community College Student Success In The Digitally-Driven Workplace
Authors: Levy Dawn
Published: September 2017

Community colleges have embraced distance education as a means to provide increased flexibility and access to their large numbers of non-traditional students. Retention rates and student achievement measures alone may not reflect all of the benefits and opportunities that online learning, blended or hybrid learning, and technology-enhanced learning may afford these students. Online learning resources should be viewed as a tremendous value-added benefit for community college students, not only for the content conveyed, but also for fostering the digital readiness, cultivating the professional personas, and encouraging the self-directed learning needed to succeed in the digitally-driven workplace.
Potential Indicators Of Balance Sheet And Income Statement Fraud
Authors: Decker Jeff , Kizirian Tim
Published: September 2017

This student case study is intended for use in the accounting classroom to develop a stronger understanding of potential fraud indicators and their level of significance. Auditing standard setters have responded to high profile accounting frauds by increasing the responsibility of auditors to find and report on accounting frauds. This case study presents a number of fraud indicators that can be investigated and discussed as part of a class assignment.  This case study is unique in that it makes a clear differentiation between quality of revenue and quality of earnings.
Dividendes En Présence Des Imperfections Du Marché
Authors: Lamyaa Riad , Karima Touili
Published: October 2017

The topic of the company's dividend policy has captured the interest of economists and over the last five decades has been the subject of several theoretical and empirical studies. Economists have proposed a number of theories to explain the dividend puzzle. The purpose of this paper is to examine the effect of market imperfections (asymmetric information, agency costs and the impact of taxation) on corporate dividend policy. While briefly presenting the main theories of dividend policy and summarizing the empirical evidence on these theories. The paper reaches at a conclusion that the famous dividend puzzle is still unresolved. The empirical evidence is ambiguous and the search for a new explanation of dividends is continuing.
Desarrollo De Un Sistema Experto Para Mejorar La Asignacion Del Docente A Las Diferentes Catedras En La Facultad De Informática Y Electrónica Utilizando El Modelo De Mycin
Authors: Yungán Jonny Israel Guaiña , Barahona Byron Ernesto Vaca , Santillán Carlos Arturo Jara , Orozco Ángel Patricio Flores , Cáceres Sttefano Israel Aguayo
Published: October 2017

This research proposes the development of an expert system that improves the teaching assignment to teach the different chairs of the Faculty of Computer Science and Electronics at the Polytechnic School of Chimborazo. The current problem involves a manual process of evaluation of academic profiles and find the best solution through an expert system that meets certain needs when assigning chairs to the teacher. Free software was used. Linux Platform CentOS 5.0, Glassfish Server 3.1.2, PostgreSQL Database Version 9.2, Java Programming language with PrimeFaces 4.0 component library to automate, optimize and properly focus the assignment process. Based on a Likert scale, the automated process was 93.33% efficient versus 33.33% of the manual process. Analyzing the results, it is concluded that the automatic process exceeds the manual process by 60%, revealing that the process of assigning chairs has improved considerably using this expert system. The use of this system will support and guide decisions when evaluating academic profiles of professionals who would like to be part of the faculty of the Faculty of Computer Science and Electronics at the Polytechnic Higher School of Chimborazo.
Causal analysis procedure focused on small software development organizations
Authors: Zúñiga-Silva Kelly Yohanna , Ardila-Albarracín Carlos Alberto , Pino-Correa Francisco José
Published: September 2017

Very Small Entities (VSE) dedicated to software development lack of enough resources to adopt causal analysis practices, defined in models as CMMI, due to their complexity and costs. It is important to detect the generated defects in the development process, and to make a systematic analysis aimed at determining its causes. However, identifying those root causes is an arduous task, and failing to do so leads to wrong decisions that either fail to solve the problem or even make it worse. On this basis, this paper proposes a causal analysis procedure focused on small organizations PAC-DS (according to its initials in Spanish), which includes activities aimed at identifying the defects causes. After its evaluation in a preliminary case study, the utility of the procedure was evidenced.
BrIM 5D models and Lean Construction for planning work activities in reinforced concrete bridges
Authors: Sánchez-Rivera Omar Giovanny , Galvis-Guerra José Alberto , Porras-Díaz Hernán , Ardila-Chacón Yerson Damián , Martínez-Martínez César Augusto
Published: September 2017

Integrating Building Information Modeling (BIM) and Lean Construction (LC) can improve the reinforced concrete bridging planning process, due to the possibility of managing the project information with BIM to obtain accurate input data that benefit the application of LC principles. The application of BIM to bridges is called Bridge Information Modeling (BrIM). In this paper, we study the feasibility of jointly apply BrIM technology and LC philosophy, instead of the individual use of BrIM models for planning reinforced concrete bridges. We used an investigative approach based on a case study, divided into two stages: in the first, we planned the case study with BrIM 3D models; and in the second, with BrIM 5D models and LC. The integration of BrIM and LC improve the results of the project planning stage by early detecting problems and constraints; this detection has the visualization and information management advantages provided by BIM, which along with the application of LC principles improve project planning, and encourage waste reduction.
Computer algorithm for comparing and ordering models based on indicators and user value
Authors: Aliaga-Benavides Adriel Alejandro , Santana-Pacheco Yudisel , Mustelier-Hechavarría Antonio , Guzmán-Bazán Yuniel
Published: September 2017

Sometimes a list of models can be compared using a set of indicators, ordered by the user’s criterion, given that it is known whether the growth of the indicators value affect the user’s interests. This paper proposes a computational algorithm that compares models, assigning them a numerical value that corresponds to the priority given to each model indicator by the user. The proposed algorithm allows to rank the models as other known algorithms do, such as the vector space model; however, it takes into account user comparison priorities. When working with lineal functions, the margin of error in the algorithm calculations is null. The algorithm is validated by the software Ambiens v1.0, whose purpose is to manage the waste control information, showing relevant results in the comparison of models. The algorithm essence is the need to identify the best model of the group, according to the user’s criterion per indicator.
Structural, elastic, electronic and thermal properties of InAs: A study of functional density
Authors: Mendoza-Estrada Víctor , Romero-Baños Melissa , Dovale-Farelo Viviana , López-Pérez William , González-García Álvaro , González-Hernández Rafael
Published: September 2017

In this research, first-principles calculations were carried out within the density functional theory (DFT) framework, using LDA and GGA, in order to study the structural, elastic, electronic and thermal properties of InAs in the zinc-blende structure. The results of the structural properties (a, B0, ) agree with the theoretical and experimental results reported by other authors. Additionally, the elastic properties, the elastic constants (C11, C12 and C44), the anisotropy coefficient (A) and the predicted speeds of the sound ( , , and ) are in agreement with the results reported by other authors. In contrast, the shear modulus (G), the Young's modulus (Y) and the Poisson's ratio (v) show some discrepancy with respect to the experimental values, although, the values obtained are reasonable. On the other hand, it is evident the tendency of the LDA and GGA approaches to underestimate the value of the band-gap energy in semiconductors. The thermal properties (V, , θD yCV) of InAs, calculated using the quasi-harmonic Debye model, are slightly sensitive as the temperature increases. According to the stability criteria and the negative value of the enthalpy of formation, InAs is mechanically and thermodynamically stable. Therefore, this work can be used as a future reference for theoretical and experimental studies based on InAs.
Abrasive wear in wear plates and hard coatings applied by welding with shielded electrode
Authors: Marulanda-Arévalo José Luddey , Cañas-Mendoza Luz Adriana , Barón-Jaimez Jairo Alberto
Published: September 2017

Performance against abrasive wear was evaluated (in compliance with the ASTM G-65 standard) for both wear plates and hard coatings applied by electric welding. The characterization of the coatings was achieved by using hardness tests, optical microscopy and scanning electron microscopy (SEM). Although it was observed a direct correlation between hardness and wear resistance, a linear growth pattern was not followed. Besides the information from the hardness tests, data regarding the distribution and shape of the carbides in the welding bead are also necessary to choose the hard coating applied by welding, to protect against abrasive wear. Base metal and coatings had satisfactory joint, due to their dilution; the first welding layer had less hardness than the third welding layer.
Inmotics: sustainability and comfort
Authors: Strauch-Gómez Franz Wilhelm , Gutiérrez-Martínez Diego Fernando , Martínez-Baquero Jose Fernando , Hernández-Beleño Rubén Darío , Méndez-Pallares Baldomero
Published: September 2017

The Olympic Games produce a long-lasting social, urban, cultural and economic impact in the host cities. For the specific case of the Youth Olympic Games, which will be held in the city of Buenos Aires, Argentina, a proposal has been selected to build an Olympic village that would function as social housing after hosting the games participants. Moreover, the International Olympic Committee requires and promotes the principle of environmental sustainability; consequently, host cities must adapt to host the event without losing sight of the optimal management of resources. In this context, technologies such as building automation become relevant and applicable to meet the objectives of providing quality of life and work without neglecting the efficient use of energy. Furthermore, this solution comes with great challenges that serve to promote the advancement of science and social commitment.
Causas de mortalidad por enfermedades psiquiátricas en Jerez de los Caballeros (Badajoz, España) en el siglo XIX.
Authors: Suárez-Guzmán Francisco J. , Peral Diego
Published: September 2017

Introducción: Se propone agrupar de acuerdo a la clasificación de Bertillon, basada en modelos etiológicos y anatómicos, las causas de mortalidad por enfermedades psiquiátricas, halladas en Jerez de los Caballeros (Badajoz, España) durante el siglo XIX. Objetivos: Examinar detalles estadísticos y clínicos de las causas de mortalidad por enfermedades psiquiátricas detectadas en el estudio. Material y métodos: Se utilizó la información obtenida de los Libros de Defunción del Archivo Parroquial de la ciudad. Resultados: Se encontró documentación de 26 203 defunciones, en 7665 de las cuales no constaba la causa del fallecimiento; en las restantes 18538, que sí la incluyeron, las patologías psiquiátricas constituyeron la decimoquinta causa de defunción, con 57 casos y un 0,3% del total de la mortalidad en la población estudiada, siendo el cólico histérico la enfermedad más frecuente. Discusión: El estudio refleja las dificultades para la obtención de datos fidedignos en áreas como ésta, debidas a posibles errores de transcripción, interpretación y diagnóstico en la documentación de dos siglos atrás.
La cirugía de epilepsia y el establecimiento de programas quirúrgicos en el Perú: El proyecto de colaboración entre Perú y Canadá.
Authors: Burneo Jorge G. , Steven David A. , Arango Miguel , Zapata Willy , Vasquez Carlos M. , Becerra Alicia
Published: September 2017

El presente artículo define y describe las características clínicas de epilepsia refractaria, la cirugía aplicable al manejo de la misma y la necesidad de establecer centros  para el manejo integral de estos pacientes en el Perú. Además, describe los inicios de la cirugía de epilepsia en el Perú, su desarrollo paulatino y el proyecto de colaboración asistencial y educativo entre los programas de epilepsia de la Western University en London, Ontario, Canadá y el Instituto Nacional de Ciencias Neurológicas, así como el Hospital Edgardo Rebagliati en Lima, Perú.
Evaluación de riesgo temprano del consumo de sustancias psicoactivas en adolescentes: una re- interpretación.
Authors: Copez-Lonzoy Anthony J.E. , Dominguez-Lara Sergio A.
Published: September 2017

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A propósito de corrupción y neuroimágenes.
Authors: Stucchi-Portocarrero Santiago
Published: September 2017

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Study of the Influence of TiB Content and Temperature in the Properties of in Situ Titanium Matrix Composites
Authors: Arévalo Cristina , Montealegre-Melendez Isabel , Pérez-Soriano Eva María , Ariza Enrique , Kitzmantel Michael , Neubauer Erich
Published: September 2017

This work focuses on the study of the microstructure, hardening and stiffening effect caused by the secondary phases formed in titanium matrices. These secondary phases were originated from reactions between the matrix and boron particles added in the starting mixtures of the composites. Not only was the composite composition studied as an influencing factor in the behaviour of the composites, but also different operational temperatures. Three volume percentages of boron content were tested (0.9, 2.5 and 5 vol % of amorphous boron). The manufacturing process used to produce the composites was inductive hot pressing, which operational temperatures were between 1000 °C to 1300 °C. Specimens showed optimal densification. Moreover, microstructural study revealed the formation of TiB in various shapes and proportions. Mechanical testing confirmed that the secondary phases had a positive influence on the properties of the composites. In general, adding boron particles increased the hardness and stiffness of the composites; however rising temperatures resulted in greater increases in stiffness than in hardness.