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A GIS-Based Data Model and Tools for Analysis and Visualization of Levee Breaching Using the GSSHA ModelTran, Hoang Luu 17 March 2011 (has links) (PDF)
Levee breaching is the most frequent and dangerous form of levee failure. A levee breach occurs when floodwater breaks through part of the levee creating an opening for water to flood the protected area. According to National Committee on Levee Safety (NCLS), a reasonable upper limit for damage resulting from levee breaching is around $10 billion per year during 1998 and 2007. This number excludes hurricanes Katrina and Rita in 2005 which resulted in economic damages estimated to be more than $200 billion dollar and a loss of more than 1800 lives. In response to these catastrophic failures, the U.S. Army Corps of Engineers (USACE) started to develop the National Levee Database (NLD) on May 2006. The NLD has a critical role in evaluating the safety of the national levee system. It contains information regarding the attributes of the national levee system. The Levee Analyst Data Model was developed by Dr Norm Jones, Jeff Handy and Thomas Griffiths to supplement the NLD. Levee Analyst is a data model and suite of tools for managing levee information in ArcGIS and exporting the information to Google Earth for enhanced visualization. The current Levee Analyst has a concise and expandable structure for managing, archiving and analyzing large amounts of levee seepage and slope stability data. (Thomas 2009). The new set of tools developed in this research extends the ability of the Levee Analyst Data Model to analyze and mange levee breach simulations and store them in the NLD geodatabase. The capabilities and compatibilities with the NLD of the new geoprocessing tools are demonstrated in the case study. The feasibility of using GSSHA model to simulate flooding is also demonstrated in this research.
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Shallow Groundwater Modeling of the Historical Irwin Wet Prairie in the Oak Openings of Northwest OhioWijayarathne, Dayal Buddika 27 July 2015 (has links)
No description available.
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I Ett Kliv Mot Digitalisering : En kvalitativ fallstudie av materialflödet hos en livsmedelsproducentJonsson, Sandra, Rodin, Emil January 2024 (has links)
Med digitaliseringens framväxt har så även industriernas förutsättningar förändrats. I dag återfinns en vid portfölj av digitala hjälpmedel och maskinteknik som bidrar till genomförandet av producerande industriers många processer, men den verkliga implementeringen varierar. Livsmedelsindustrin ses som en av dem tillverkande industrier med långsammare adoption och en försiktigare inställning till förändrade processer, vilket för verksamma organisationer har försvårat navigationen bland digitala lösningar och hur dessa kan nyttjas. En organisation som vittnar om dessa osäkerheter är livsmedelsproducenten Norrmejerier Ekonomisk Förening som i samband med stora organisatoriska omställningar behöver förändra nuvarande materialhantering och därför börjat se över informationstekniska systemstöd som en del av lösningen. Denna studie ämnar därför att kartlägga och sammanställa organisatoriska behov som bör beaktas i implementering av systemstöd för material och insatsvaror inom livsmedelsindustrin. För att kunna göra det delades syftet in i två delsyften: 1. Kartlägga och sammanställa olika avdelningars behov på systemstöd i strävan efter relevans och reducerat motstånd vid förändring. 2. Identifiera funktioner och parametrar motsvarande nuvarande arbetsprocesser och behovsbilder givna ur delsyfte 1. För att uppnå dessa syften genomfördes en fallstudie på Norrmejerier via semistrukturerade intervjuer med anställda inom olika avdelningar som skulle påverkas av förändringen. Intervjuerna genomfördes med stöd från tidigare studier inom de industriella revolutionernas bidrag och studier avseende förändringsledning samt förändringsmotstånd. Utöver intervjuer samlades data in via kompletterande organisatorisk mikroetnografi, vars data nyttjades till formulering av intervjufrågor samt som kompletterande insikter vid analys av intervjusvar. Resultaten av studien visade behov att förbättra materialflödets spårbarhet och automation, samtidigt som en sådan förändring förutsatte att berörda får utbildning i valt systemstöd respektive nya arbetssätt. Därtill identifierades warehouse management systems (WMS) tillsammans med RFID-teknologi som en potentiell lösning som för det interna materialflödet skulle innebära en ökad effektivitet, precision och spårbarhet med automatisk informationsinsamling och kommunikation mellan uppkopplade databaser och enheter. En sådan implementering bar enligt tidigare studier även potentialen till ett förbättrat kvalitetsarbete och ökad livsmedelssäkerhet, vilket sedermera inte enkom skulle resultera i fördelar för materialflödeshanteringen på lång sikt.
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Stochastic Spatio-Temporal Uncertainty in GIS-Based Water Quality Modeling of the Land Water InterfaceSalah, Ahmad Mohamad 27 February 2009 (has links)
Integrated water resources management has been used for decades in various formats. The limited resources and the ever growing population keep imposing pressure on decision makers to better-, and reliably, manage the available waters. On the other hand, the continuous development in computing and modeling power has helped modelers and decision makers considerably. To use these models, assumptions have to be made to fill in the gaps of missing data and to approximate the current conditions. The type and amount of information available can also be used to help select the best model from the currently available models. Advances in data collection have not kept up to the pace of advances in model development and the need for more and reliable input parameter values. Hence, uncertainty in model input parameters also needs to be quantified and addressed. This research effort develops a spatially-based modeling framework to model watersheds from both water quantity and quality standpoints. In this research, Gridded Surface Sub-Surface Hydrologic Analysis (GSSHA) and CE-QUAL-W2 models are linked within the Watershed Modeling System (WMS); a GIS interface for hydrologic and hydraulic models, to better handle both models pre and post processing. In addition, stochastic analysis routines are developed and used to examine and address the uncertainty inherent in the modeling process of the interface between land and water in the designated watershed. The linkage routines are developed in WMS using C++. The two models are linked spatially and temporally with the general direction of data flow from GSSHA to CE-QUAL-W2. Pre-processing of the CE-QUAL-W2 model is performed first. Then stochastic parameters and their associated distributions are defined for stochastic analysis in GSSHA before a batch run is performed. GSSHA output is then aggregated by CE-QUAL-W2 segments to generate multiple CE-QUAL-W2 runs. WMS then reads the stochastic CE-QUAL-W2 runs upon successful completion for data analysis. Modelers need to generate a WMS Gage for each location where they want to examine the stochastic output. A Gage is defined by a segment and a layer in the CE-QUAl-W2 model. Once defined, modelers are able to view a computed credible interval with lower, upper bounds in addition to the mean time series of a pre-selected constituent. Decision makers can utilize this output to better manage watersheds by understanding and incorporating the spatio-temporal uncertainty for the land-water interface.
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商品通道指標及威廉指標應用於外匯市場之獲利性研究 / Applying Commodity Channel Index and Williams Index to Foreign Exchange Transaction鄭雅竹, Cheng, Ya-chu Unknown Date (has links)
由於技術分析之有效性一直為學者們所探討且備具爭議的議題,有部分學者認為技術分析無效,但實務上,技術分析在金融市場上的應用卻相當廣泛;此外,由於外匯市場為交易量龐大且眾多學者研究之重要金融市場,故本文回顧過去多項國內、外研究,並經由實地探訪台灣外匯市場上之投資人,針對仍未被研究,但實務上所採用之技術指標進行多項交易策略之模擬並探討其獲利性。
本文主要針對新臺幣兌換美元之匯市,探究將商品通道指標(Commodity Channel Indexes)及威廉指標(Williams Overbought/ Oversold Index)兩種技術分析指標應用於此外匯市場上之獲利情形,採用1993年1月1日至2012年12月28日,共計二十年,5279筆銀行間交易之新台幣兌美元之匯率日間資料,擷取其最高價、最低價及收盤價並透過程式交易進行回溯測試,並針對此兩種技術指標建構多種交易策略,歸納並分析其中可獲得超額報酬之技術策略,期能找出獲得最佳投資報酬以及提高交易的成功機率與獲利能力之法則。
藉由Matlab運算處理後,將此兩種技術指標應用於過去20年之歷史價格進行回溯測試,本實證研究發現:1. 採用威廉指標之策略普遍績效都較採用商品通道指標來的好,不僅在總報酬率的表現上比較好,採用威廉指標所執行的交易獲利的機率也必較高。2. 由於此兩技術指標應用在新台幣兌美元之外匯市場上可得的績效高於買賣策略應用於此市場之平均年化報酬率,故證實此兩種技術指標應用在新台幣兌美元的外匯市場上,均可獲得超額報酬,此兩技術指標在新台幣兌美元市場是有效的、可獲利的。 / It has long been a controversial question to scholars whether or not technical analysis is efficient. Although some scholars believe technical analysis is useless, it has been broadly used in the financial markets for a long time. As foreign exchange markets are one of the most important financial markets with huge trading volume in the world, this paper reviews many past literature and extracts trading strategies from some real investors in Taiwan’s foreign exchange markets. Additionally, this paper focuses on testing the trading performance of applying the technical indexes which have not been researched in the academic field but have often been utilized in the real exchange markets.
This thesis mainly concentrates on the exchange market of New Taiwan Dollar against US dollar and examines the trading performance of utilizing two technical indexes which have been used but not been researched in foreign exchange markets : Commodity Channel Index (CCI) and Williams Overbought/Oversold Index (WMS). The dataset of this paper is from January 1st, 1993 to December 28th, 2012, an overall of 20 years and 5279 times of daily NTD/USD exchange rates between banks. To complete the back-testing, this research utilizes the highest, lowest and close price from those materials and analyzes the technical strategies which obtain excess profits. By generalizing the results of those trading strategies, investors can find the best trading rules and increase the returns from applying these two technical indexes to foreign exchange market.
The results of this research are as follows: 1. WMS’s performances are chiefly superior to the CCI’s performances. Not only the total profit rates of technical strategies from WMS are higher than the total profit rates of trading rules from CCI, but also the rates of profits on WMS always demonstrate a better result than the rates of profits on CCI. 2. Both of these two technical indicators can produce excess profits. Compared to the average annual return of buy-and-hold strategy in this market, both of the two technical indexes conduct a better performance. As a result, these two technical indexes are effective in NTD/USD market.
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Návrh optimalizace logistických procesů společnosti ARKOV / The ARKOV Logistic Processes Optimization ProposalUrban, Jiří January 2009 (has links)
The intent of diploma thesis is to propose the optimization of current logistic processes with utilization of modern information technology. The work will propose the tool for stock classiffication, further evaluates the options of the warehouse management system implementation, including on-line connection to SAP Business One ERP system, and proposes its utilization in optimization of company’s business processes. The result of this work is the recommended proposal of the best and as well as cost friendly solution for company ARKOV, Ltd.
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[pt] IMPLANTAÇÃO DE UM WMS, MOTIVADORES E FATORES CRÍTICOS: UM ESTUDO DE CASO EM UMA EMPRESA DE ENTRETENIMENTO / [en] THE IMPLEMENTATION OF A WMS, MOTIVATORS AND CRITICAL FACTORS: A CASE STUDY IN AN ENTERTAINMENT COMPANYMARIANA BARBERO RIBEIRO GOULART 23 November 2016 (has links)
[pt] A crescente demanda pelo consumo e o maior nível de exigência dos consumidores em termos de qualidade de serviço, disponibilidade de produtos e tempo de atendimento influenciam na agressividade e competitividade dos mercados globais. Para arcar com as demandas e atender às expectativas, as empresas devem investir na sua cadeia de suprimentos em prol da sua resiliência e sobrevivência no mercado. A tecnologia da informação é uma forte aliada à logística para reduzir em custos, melhorar a qualidade de atendimento, aperfeiçoar processos e aumentar o controle sob a cadeia sem afetar os objetivos da empresa. As vantagens do WMS (Warehouse Management System - Sistema de Gerenciamento de Armazéns) incluem a otimização da gestão de estoque, dos processos e da tecnologia de um armazém. Há, entretanto, fatores críticos, riscos e desafios que afetam a complexidade e o sucesso das implantações de sistemas. O objetivo desta dissertação é realizar um estudo de caso sobre os principais motivadores que influenciam os gestores na decisão de adotar um WMS em seu armazém e sobre os fatores críticos enfrentados pela equipe do projeto de implantação de um WMS no armazém de uma empresa de entretenimento, visto que a autora fez parte da equipe do projeto e participou de todas as fases. Os resultados incluem: um comparativo entre os principais desafios vividos pela equipe de implantação, os fatores críticos mapeados na Revisão Bibliográfica sobre implantação de projetos e os riscos previstos pela própria equipe no início do projeto; e um levantamento de quais dos motivadores que influenciaram os gestores na decisão de adotar o sistema em seu armazém foram alcançados no fim do projeto. / [en] The growing demand for consumption and consumers higher demand level in terms of service and product quality influence the aggressiveness and competitiveness of global markets. To cope with consumers demands and meet their expectations, companies must invest in its supply chain to support their resilience and market survival. Information technology is a strong ally to logistics when it comes to reduce costs, improve service quality and processes and increase the control over the supply chain without affecting the company s goals. Among the advantages of the WMS (Warehouse Management System) there are the optimization of inventory management, processes and warehouse technology. There are, however, critical factors, risks and challenges that influence the complexity and the success of systems implementation. The aim of this work is to conduct a case study about the key drivers that influence managers in the decision to adopt a WMS in their warehouse and the critical factors faced by a project team that was part of the implementation of a WMS in the warehouse of an entertainment company. The authoress of this work was part of the project team and participated in all of its phases. The results include a parallel between the main challenges faced by the implementation team; the risks forecasted by the team at the beginning of the project; and the critical factors mapped in the Literature Review chapter about project implementation. The second outcome is a survey of which of the motivators that influenced managers in their decision to adopt the system in their warehouse were achieved in the end of the project.
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Implementation of a WMS through a value co-creation lens : A Qualitative Study Of Valueco-Creation From A Company PerspectiveMendoza Albornoz, Karen, Baldove Orsander, Emerald, Thoong, Isabelle January 2023 (has links)
Background: Today most companies strive to offer logistics services in a highly competitive market. In the ecommerce sector a WMS is a crucial element since these systems can handle different amounts of volumes. Implementing such a system can contribute positively to the value creation. By focusing more on value co-creation rather than the value exchanged, companies can create more effective supply chains that benefit all actors involved. Purpose: The study’s purpose is conducted in partnership with Extenda Retail. The aim is to explore the implementation of a warehouse management system (WMS) from a value co-creation perspective. Based on the purpose two research questions have been formulated: What are the challenges associated with implementing a WMS? Which resources enrich value co-creation in the process of a WMS implementation according to a company's perspective? Method: The study is of a case study with Extenda Retail, and the method of data collection was semi-structured interviews, and document analysis. Results and Analysis: Value co-creation has always been a theory of discussion, with many actors and resources involved. The results emphasized knowledge, skills, customer involvement, user training and testing are factors that both contribute and challenge the value co-creation process. Conclusion: The findings show that applying a value co-creation lens has a significant role in effective warehouse management. Where resources from both company and customers are vital for the success of value co-creation. For example customer involvement, as in feedback, and request. Along with knowledge, and skills to manage a WMS, in the form of user training will ensure that the value of the product may be realized. The challenges identified for the study are as follows, balancing cost and quality, unmotivated customers, misinformation, changes and additions made to the scope. Future research: As our study is mainly focused from a company perspective, we suggest investigating the customer’s perspective and their experiences regarding resources integration, value co-creation and their interactions with their supplier.
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An Enhanced Data Model and Tools for Analysis and Visualization of Levee SimulationsGriffiths, Thomas Richard 15 March 2010 (has links) (PDF)
The devastating levee failures associated with hurricanes Katrina and Rita, and the more recent Midwest flooding, placed a spotlight on the importance of levees and our dependence on them to protect life and property. In response to levee failures associated with the hurricanes, Congress passed the Water Resources Development Act of 2007 which established a National Committee on Levee Safety. The committee was charged with developing recommendations for a National Levee Safety Program. The Secretary of the Army was charged with the establishment and maintenance of a National Levee Database. The National Levee Database is a critical tool in assessing and improving the safety of the nation's levees. However, the NLD data model, established in 2007, lacked a structure to store seepage and slope stability analyses – vital information for assessing the safety of a levee. In response, the Levee Analyst was developed in 2008 by Dr. Norm Jones and Jeffrey Handy. The Levee Analysis Data Model was designed to provide a central location, compatible with the National Levee Database, for storing large amounts of levee seepage and slope stability analytical data. The original Levee Analyst geoprocessing tools were created to assist users in populating, managing, and analyzing Levee Analyst geodatabase data. In an effort to enhance the Levee Analyst and provide greater accessibility to levee data, this research expanded the Levee Analyst to include modifications to the data model and additional geoprocessing tools that archive GeoStudio SEEP/W and SLOPE/W simulations as well as export the entire Levee Analyst database to Google Earth. Case studies were performed to demonstrate the new geoprocessing tools' capabilities and the compatibility between the National Levee Database and the Levee Analyst database. A number of levee breaches were simulated to prototype the enhancement of the Levee Analyst to include additional feature classes, tables, and geoprocessing tools. This enhancement would allow Levee Analyst to manage, edit, and export two-dimensional levee breach scenarios.
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Adaptação transcultural e propriedades psicométricas do subteste Visual Reproduction (Reprodução Visual I e II) da Wechsler Memory Scale - Fourth Edition (WMS-IV), (Escalas de Memória de Wechsler) para uma população do Brasil / Transcultural Adaptation of the subtest Visual Reproduction I and II of the Wechsler Memory Scale - IV (WMS-IV) (Wechsler Memory Scale) to one culture from Brazil.Spedo, Carina Tellaroli 27 April 2012 (has links)
Instrumentos de avaliação da memória episódica não verbal são escassos. Além disto, consideramos a crescente necessidade de esforços para a adaptação transcultural de instrumentos de memória para nosso contexto. O subteste Visual Reproduction I e II (Reprodução Visual I e II) faz parte da Wechsler Memory Scale (WMS) e se trata de uma escala mundialmente utilizada e adaptada a diversas culturas, sendo considerada padrão ouro dentre as medidas de avaliação da memória. No presente estudo, utilizamos o subteste Reprodução Visual, da WMS na sua quarta edição (WMS-IV). O Reprodução Visual (RV) é subdividido em três domínios de investigação da memória visual (evocação imediata, evocação tardia e reconhecimento) e uma tarefa opcional para avaliação da percepção visual, habilidades construtivas e atenção aos detalhes (cópia). Além disto, o escore de cada um dos três domínios avaliados podem ser contrastados, de modo que se obtenham informações sobre a retenção, o quanto a memória é melhor ou pior do que as habilidades construtivas e, por último, o quão o sujeito evoca livremente ou precisa de pistas para evocar a informação aprendida. Esta versão da WMS-IV é uma revisão da WMS-III, cujos estudos resultaram em algumas alterações metodológicas e de conteúdo, no sentido de facilitar a análise dos resultados, diminuir os vieses de aplicação e correção. Desta forma, para atingir os propósitos desta pesquisa foram realizados dois estudos: o Estudo 1 teve como objetivo realizar a adaptação transcultural do subteste Visual Reproduction I and II - Wechsler Memory Scale IV (WMS-IV) e apresentar uma versão para uso preliminar no Brasil. O estudo 2 consistiu na avaliação das suas propriedades psicométricas. Participaram do estudo 1 três tradutores com fluência no inglês, que realizaram traduções independentes, dois tradutores profissionais e dois juízes especialistas (um neurologista e uma neuropsicóloga). Os juízes especialistas e um tradutor profissional investigaram a equivalência conceitual, semântica e operacional dos itens. Uma amostra de 24 sujeitos saudáveis responderam ao pré-teste, que consistiu na investigação da compreensão e dificuldade da versão adaptada do Reprodução Visual I e II. No estudo dois, participaram 62 adultos saudáveis e 29 adultos com Acidente vascular cerebral em hemisfério direito, no território da Artéria cerebral média (AVC-ACMHD). Os sujeitos tinham idade entre 20 e 59 anos e as respostas foram consideradas para análises de confiabilidade e validade baseadas em análises estatísticas da teoria clássica (ANOVA, ANCOVA, coeficiente alfa de Cronbach, e correlação de Pearson) e da teoria moderna de testagem (Teoria de Resposta ao Item (TRI) através do modelo de um parâmetro ou método de Rasch). O processo de análise das propriedades psicométricas utilizou a metodologia recomendada pelo American Educational Research Association [AERA], American Psychological Association [APA] e o National council on measure in education [NCME], 2008 indicada pela editora responsável pelos direitos autorais do WMS-IV. Na confiabilidade, foi investigada a consistência interna (coeficiente alfa de Cronbach) e a estabilidade temporal (correlação de Pearson). Na investigação da validade, foram investigados: os processos de resposta, a estrutura interna (correlação de Pearson, Teoria de resposta ao Item pelo método de Rash), a relação com outros instrumentos (Mini Exame do Estado Mental - MEEM e Figuras Complexas de Rey) e a relação com variáveis externas (AVC-ACMHD comparados a controles saudáveis). O índice de consistência interna do subteste foi de 0,92 e a estabilidade teste-reteste mostrou correlação significativa, exceto com a tarefa de evocação tardia. Esses resultados são similares aos do estudo original, sendo, portanto caracterizada a sua equivalência. Os resultados do estudo de validade mostraram que há equivalência em termos de conteúdo.A investigação da estrutura interna pelo coeficiente de correlação de Pearson evidenciou que todas as figuras obtiveram correlação significativa (p<0,001). Ainda mais: correlacionaram-se congruentemente durante toda a tarefa. Na investigação da estrutura interna pelo método de Rasch foi evidenciado que o teste é unidimensional, que a progressão de theta ao longo das categorias de resposta foram como o esperado pelo modelo. A TRI mostrou que a figura mais fácil é a figura 1 da tarefa de evocação imediata e a mais difícil é a figura 5 de evocação tardia. Os índices de correlação theta foram superiores a 0,5, mostrando correlação. No mapa de pessoas-itens as variáveis tenderam a avaliar o constructo em níveis inferiores ao de habilidade dos sujeitos, sugerindo a necessidade de itens avaliando níveis mais altos do constructo. Na análise de validade considerando outras medidas a tarefa de evocação imediata o escore total e evocação tardia apresentaram correlação com o total da tarefa de memória das figuras complexas de Rey. As tarefas de cópia correlacionaram-se com o total de cópia do teste das figuras complexas de Rey. A tarefa de evocação imediata o escore total e evocação tardia apresentaram correlação com o total do MEEM. A análise de covariância mostrou que a escolaridade exerce influência nos escores do RV. Assim, depois de controlada a escolaridade foi evidenciado que os controles tiveram melhor desempenho em todas as tarefas do RV, quando comparados aos pacientes com AVC-ACMHD. Na análise qualitativa, através do escalonamento e contraste dos escores, foi observado que o baixo desempenho dos pacientes com AVC se deve ao fato de que esses pacientes percebem muito mal o item, com pior controle motor, habilidade visuo-construtiva e capacidade de prestar atenção a detalhes. O resultado é uma menor aquisição da informações e as conseqüências são dificuldades na memória episódica não verbal . Os nossos resultados foram demonstrativos de que o RV da WMS- IV, além de culturalmente equivalente em termos de confiabilidade e validade, é adequado para a cultura dos sujeitos e pacientes avaliados em Ribeirão Preto, preciso e válido para o uso no Brasil. Saliente-se a necessidade de estudos normativos com esse subteste. / Tools for evaluation of non-verbal episodic memory are scarce. Furthermore, we consider the increasing need for efforts to cross-cultural adaptation of instruments of memory for our context. The subtest Visual Reproduction I and II is part of the Wechsler Memory Scale (WMS), and it is used worldwide scale and adapted to different cultures, and is considered the gold standard among assessment measures of memory. In the present study, we use the Visual Reproduction subtest of WMS in its fourth edition (WMS-IV). The Visual Reproduction (VR) is subdivided into three fields of research in visual memory (immediate recall, delayed recall and recognition) and an optional task to assess visual perception, constructive abilities and attention to detail (copy). Moreover, the score of each of the three domains can be contrasted evaluated in order to obtain information on retention, and the memory is better or worse than the constructive abilities, and finally, how the subject refers freely or need tracks to evoke the information learned. This version of the WMS-IV is a review of the WMS-III, whose studies have resulted in some changes in methodology and content, to facilitate the analysis of results, lower camest application and correction. Thus, to obtain the purposes of this research were carried out two studies: Study 1 was aimed at making cross-cultural adaptation of the subtest \"Visual Reproduction I and II - Wechsler Memory Scale - IV (WMS-IV)\" and present a version for use preliminary in Brazil and the second study consisted of an evaluation of its psychometric properties. The study included a three translators fluent in English, which made independent translations, translators two professional judges and two experts (a neurologist and a neuropsychologist) who performed the conceptual and item equivalence, semantic, and operational. 24 healthy subjects responded to the pretest, which consisted in the investigation of understanding and difficulty of the adapted version of the Visual Reproduction I and II. In the second study, participated in 62 healthy adults and 29 adults with stroke in the right hemisphere in the territory of the middle cerebral artery. All subjects were aged between 20 and 59 years and the responses were considered for analysis of reliability and validity based on statistical analysis of the classical theory (ANOVA, ANCOVA, Cronbach\'s alpha, and Pearsons correlation) and the modern theory testing (Item Theory Response IRT, the model of one parameter or Rasch method). The process of analyzing the psychometric properties following the methodology recommended by the American Educational Research Association [AERA], American Psychological Association [APA] and the National council on education measure in [NCME], 2008 - indicated by the publisher responsible for the copyright of the WMS-IV. In the reliability analysis, we investigated the internal consistency (Cronbach\'s alpha) and temporal stability (Pearsons correlation). To investigate the validity, were considered: the processes of response, the internal structure (Pearsons correlation and IRT), the relationship with other tools (Mini Mental State Exam- MMSE and Rey-Osterrieth Complex Figure Test (ROCF).) and the relationship with external variables (stroke in the right hemisphere in the territory of the middle cerebral artery, compared to healthy controls). The index of internal consistency overall subtest was 0.92 and test-retest stability showed significant correlation, except with the task of delayed recall. These results are similar to the original study, showing thus their equivalence. The results of the validity study showed that there is equivalence in terms of investigating the internal structure and content. Pearson\'s correlation coefficient showed that all the figures obtained significant correlation (p <0.001) and further correlated with each moment congruently the task. In investigating the internal structure by the Rasch method has been shown that the test is one-dimensional that the progression of theta over the response categories was as expected by the model, and show that the figure is the easier task of Figure 1 - immediate recall, and is harder to figure 5- for delayed recall. The theta correlation coefficients were greater than 0.5, showing good correlation. On the map of people-items showed that the variables tended to evaluate the construct at levels below the skill of the subjects, suggesting the need for items assessing higher levels of the construct. In the analysis of validity considering other measures, the total score of immediate recall and delayed recall correlated with the total of memory task of the Rey complex figure copy. The copy of the Visual Reproduction correlated with copy of Rey-Osterrieth Complex Figure Test (ROCF). The task of ROCF immediate recall of the total score and delayed recall correlated with total MMSE. Covariance analysis showed that education exercises influences on scores of the RV. So, after controlled the variable schooling, was evident that the controls performed better than patients with stroke on all Visual Reproduction subtest. The qualitative analysis via scaling contrast scores, shown that low performance of patients with stroke is due the fact they recognize the item very badly, the motor control, visuo-constructive ability and ability to pay attention to details is lowered. Its can occur, may be due apraxia, resulting in lower acquisition of the information, resulting in difficulties in non-verbal episodic memory. Our results showing that the Visual Reproduction subtest of the WMS-IV was considered culturally equivalent in terms of reliability and validity and is appropriate for culture of the subjects and patients evaluated in Ribeirão Preto, valid and reliable for use in Brazil. We emphasize the need of studies regarding to normative data for this subtest.
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