JAQM Volume 3, Issue 3 - September 30, 2008

Quality in Statistics.

Pdf Version

Contents

Design of a Workflow System to Improve Data Quality Using Oracle Warehouse Builder (p 198)
Esther BOROWSKI, Hans-J. LENZ

We are concerned with the development of a workflow system for data quality assurance. The approach is based on the Oracle Warehouse Builder (OWB) in its latest available version. We motivate the data quality problem mainly companies are faced to, discuss some basics about data quality assurance of (mostly) non-metric data, and introduce our proposal for a workflow machine. We very shortly present some striking features, i.e. the architecture and data quality cycle of the Oracle Warehouse Builder having set the “Data Quality Option”. Next we report about our software DaRT , an acronym representing Data Quality Reporting Tool. We close with some remarks and perspectives for ongoing research.

Validity Examination of Efqm’s Results by Dea Models (p 207)
Madjid Zerafat Angiz LANGROUDI, Gholamreza JANDAGHI

European Foundation Quality Management is one of the models which deal with the assessment of function of an organization using a self-assessment for measuring the concepts some of which are more and more qualitative. Consequently, complete understanding and correct usage of this model in an organization depend on the comprehensive recognition of that model and different strategies of self- assessment. The process of self – assessment on the basis of this model in an organization needs to use the experienced auditors. This leads to reduce the wrong privilege making to the criteria and to sub-criteria probable way. In this paper, first some of the weaknesses of the EFQM model are studied, then with the usage of structure of input-output governing of the model and using of Data Envelopment Analysis, a method is offered to recognize the lack of the proportion between Enablers and the results of organization which may occur due to problems and obstacles hidden in the heart of organization.

Generalized Burr-Hatke Equation as Generator of a Homographic Failure Rate (p 215)
Alexandru ISAIC-MANIU, Viorel Gh. VODA

Starting from a generalized form of Burr-Hatke differential equation namely (see for details [18]), we obtain – for peculiar choices of u, v, a and b – as a solution, a reliability function which provides a homographic failure rate (HFR) , where . Some statistical inferences on the variable X having such a hazard rate are performed. Main indicators are evaluated and it is proved that the maximum likelihood method of estimation cannot furnish a solution for the parameter involved. A moment estimator is deduced which is used in the construction of some special sampling plans for durability testing.

Ten Tips for Promoting Autonomous Learning and Effective Engagement in the Teaching of Statistics to Undergraduate Medical Students Involved in Short-Term Research Projects (p 223)
Margaret MACDOUGALL

This article seeks to present some of the key challenges in facilitating autonomous learning and effective engagement in the teaching of statistics to undergraduate medical students involved in short-term research projects. With a view to addressing these challenges, recommendations for good practice are presented in the form of ten tips for teachers of medical statistics. The ten tips are justified by appeal to the more general educational literature on self-directed learning and engagement. Practical suggestions for the implementation of these tips are provided on the basis of the author’s own experience of teaching statistics to medical students who have embarked on 14-week clinical research projects within the 4th year of their undergraduate curriculum.

Testing: First Step towards Software Quality (p 241)
Ioan Mihnea IACOB, Radu CONSTANTINESCU

This article’s purpose is to present the benefits of a mature approach to testing and quality activities in an engineering organization, make a case for more education with respect to software quality and testing, and propose a set of goals for quality and testing education.

Statistical Modeling of the Groundwater Arsenic Contamination Level in Bangladesh Due to Chemical Elements (p 254)
Syed Md Fakrul AHSAN, Md. Nazrul ISLAM, Md. Jamal UDDIN, Mohammed Taj UDDIN

This paper is devoted to modeling of the magnitude of arsenic with 54 variables of chemical elements based on secondary data. The samples are collected from 113 wells from different areas of Bangladesh. The study shows that 9 variables are significantly related with arsenic variable. Analysis also claims that arsenic variable can be modeled with three principal components (linear combination of independent variables). The study also considered latitude and longitude variables but there is no spatial autocorrelation between them.

The Estimation of Maximum Effort in Weight Lifting Processes (p 263)
Ion IVAN, Dragos PALAGHITA, Adrian VISOIU, Bogdan Catalin VINTILA

Starting from defining the processes connected to lifting weights this article wishes to accomplish a quantitative analysis applied to the lifting processes. Also, based on the data collected at the recently ended Olympic Games (Beijing 2008) we build several models of analyzing the effects that some factors can determine during these processes.

The Automated System of the Rhythm Analysis in the Educational Process of a Higher Educational Institution on the Basis of Aprioristic Data (p 279)
Nicolae PELIN, Vladimir MIRONOV

In this article we consider the problems of algorithm functioning development for the system of automated analysis of the educational process rhythm in a higher educational institution. Using devices of experimental planning in conducting the scientific researches, adapted methodologies, which were received by authors in their dissertations regarding the decision of similar problems for continuous and discrete mass productions, there are offered variants of constructing corresponding algorithms for the automated analysis of rhythm in a higher educational institution in conducting the educational process.

Research on Elaboration and Testing of an Integrated System Based on Xml Data Analysis (p 284)
Loredana MOCEAN, Robert–Andrei BUCHMANN

This paper approaches the importance of XML for better organizing and managing plain text data. This document provides the architecture and testing plan for a data model describing organization metadata as a collection of networked information. As an important result, we propose a new model of an integrated system based on XML and using the data analysis. It also provides some steps we must follow for this data model using XML, the Extensible Markup Language.