Tamio Shimizu

O papel da tecnologia da informação (TI) na estratégia das organizações

There is great expectation about Information Technology (IT) as an enabler to create opportunities for new business strategies and new possibilities for organizations, like the case of e-business. However, the measurement of the effects corresponding to the large amount of resources invested in IT applications is still a controversial issue. Considering only efficiency does not answer this question. It is necessary to focus on the effectiveness of the IT applications relating it to its goals, objectives and requirements of the organizations, in order to evaluate IT impacts on business operations and strategies of these organizations. Alignment between IT and business strategies is an essential concept in order to consider effectiveness continuously. This study presents a comparative analysis of different papers that study the role of IT in the organizations. Based on a bibliographic research, a theoretical analysis is developed in order to clarify the main aspects that make IT an actual tool for competitiveness of organizations.

Strategic alignment process and decision support systems : theory and case studies

Chapter 1: Concepts and history of strategy in organizations Chapter 2: The development of strategies for competitive advantages Chapter 3: An overview of Value chains, Supply Chains, and Strategic Alliances issues Chapter 4: Aligning strategy with organizational structures and projects deployment Chapter 5: Alignment of organizational strategy with Information Technology strategy Chapter 6: Performance Measurement Systems: Balanced Scorecard Chapter 7: Strategies for the new economy and dynamic competitive environment PART TWO - DECISION MAKING PROCESS IN ORGANIZATIONS Chapter 8: An Overview Of The Decision-Making Process In Organizations Chapter 9: The Structuring of the Strategic-Decision-Making Process Chapter 10: The Nature of Strategic-Decision-Making Models Chapter 11: The Role of Simulation and Modern Business Games Chapter 12: Decision Based on Organizational Knowledge, Decision Support Systems, Expert System, and Business Intelligence Chapter 13: Group Decision and Negotiation in Strategic-Decision-Making .

Abordagem de um problema médico por meio do processo de KDD com ênfase à análise exploratória dos dados

Knowledge Discovery in Databases - KDD - is a process that consists of several steps, beginning with the collection of data for the problem under analysis and ending with the interpretation and evaluation of the final results. This paper discusses the influence of exploratory data analysis on the performance of Data Mining techniques with respect to the classification of new patterns, based on its application to a medical problem, and compares the performance of these techniques in order to identify the one with the highest percentage of successes. The results of this study lead to the conclusion that, providing this analysis is done properly, it can significantly improve the performance of these techniques and serve as an important tool to optimize the end results. For the problem under study, the techniques involving a Linear Programming model and Neural Networks were the ones showing the lowest percentages of errors for the test sets, presenting good generalization capacities.

Selecionando uma aplicação de Tecnologia da Informação com enfoque na eficácia: um estudo de caso de um sistema para PCP

Along the years, Information Technology (IT) is growing its support role to production activities. At first, the activities performed by IT were very simple, but nowadays, it supports almost all the production activities, including processes and products development. Production Planning and Control is a specific area where IT can effectively bring significant impacts, opening horizons for new operating strategies and even business strategies. Examples of how IT can help the operational environment are the use of MRP, MRP II and ERP systems. On the other hand, it still remains the doubts about the results obtained with the IT investments. In order to evaluate IT impacts on the organization operations, it is necessary an approach comparing the results of the IT applications related to the objectives, goals and requirements of production and of the entire organization, in other words, considering the effectiveness of IT applications. This paper reports a case study related to the selection of a new IT application in production planning in an industry. This research was developed in a large manufacturing company and it is discussed IT impacts in the operations management and in the organization business. AHP (Analytic Hierarchy Process) was the tool used for the decision-making process.

Otimização do custo de transporte na distribuição-armazenagem de açúcar

This work presents a specific model of linear programming application in a logistic distribution system. This system takes into account the storage capacity of the several warehouses, usine production, and transportation costs involved in sugar transportation in a period of 13 months. We present details of the modeling process and how the results were obtained. As a final discussion, the work suggests some extensions of the problem for this kind of environment.

Extração de regras de classificação a partir de redes neurais para auxílio à tomada de decisão na concessão de crédito bancário

Credit-risk evaluation is a very important management science problem in the financial analysis area. Neural Networks have received a lot of attention because of their universal approximation property. They have a high predictive accuracy rate, but how they reach their decisions is not easy to understand. In this paper, we present a real-life credit-risk data set and analyzed it using the NeuroRule extraction technique and the software WEKA. The results were considered very satisfactory, reaching more than 80% of accuracy in granting or denying credit on every simulation.

Algoritmo de programação de máquinas individuais com penalidades distintas de adiantamento e atraso

Neste trabalho consideramos o problema de maquina unica, com datas de entrega e penalidades de adiantamento e atraso distintas para cada ordem. Considerando que a sequencia seja predefinida, o objetivo a ser alcancado e a minimizacao da soma das diferencas (adiantamentos ou atrasos) penalizadas das ordens. Este trabalho e apresentado como uma generalizacao do algoritmo de programacao de Garey et al. (1988). Atraves de uma estrutura computacional denominada fila de prioridade, este novo algoritmo permite a elaboracao de um programa em tempo O(nlogn), enquanto que o melhor encontrado na literatura atualmente e de tempo O(n2).

UTILIZAÇÃO DE MATRIZES DE JULGAMENTOS NA ANÁLISE DO CONTROLE DA PRODUÇÃO

Este artigo trata da aplicacao da tomada de decisao com multiplos criterios na analise do controle da producao. Apresenta-se a utilizacao de matrizes de julgamentos para a analise de atributos quantitativos. Devido as caracteristicas dos atributos e dos valores de desempenho das alternativas, a utilizacao de um metodo de tomada de decisao com multiplos criterios, com matrizes de julgamentos, prove resultados adequados e uma analise concisa do desempenho das alternativas de controle da producao.

CLASSIFICAÇÃO DE CRITÉRIOS PARA SELEÇÃO DE ERP: UM ESTUDO UTILIZANDO A TÉCNICA DELPHI

The selection of an ERP (Enterprise Resource Planning) must be carefull, considering the high costs involved in its purchase and implantation. Managers of areas such as Accounting, Finance and, specially, Information Systems (IS) and Information Technology (IT) need support and tools for ERP selection. This paper presents a study conducted to classify assessment criteria which can then be used in analysis involving a Decision Support System (DSS), which will allow the assessment of the impacts of the organization changes related to the implantation of the selected system. The classification was obtained using Delphi, applied to experts in the selection and implantation of ERP. Results were satisfactory after two rounds, which demonstrated its plausibility to determine the importance of the assessment criteria, among which the following were highlighted: functionality; cross modular integration; information (reference) about supplier; “implementability” and flexibility.

Efficient utilization of algorithms through heuristic learning

In the study of problem solving methods, problems have been classified into two broad categories:Structured Problems - for which it is possible to formulate one or more algorithms to find a solution of the problem.Ill-Structured Problems - in which, finding a solution is only possible through the application of a set of general rules and strategies.