Learning management systems may offer web-based exam facilities. Such facilities entail a higher risk to exams fraud than traditional paper-based exams. The article discusses security issues with web-based exams, and proposes precautionary measures to reduce the risks. A security model is presented that distinguishes supervision support, software restrictions, and network restrictions. Solution...

We develop a general procedure for estimating the effective constitutive behavior of nonlinear dielectrics. The procedure is based on a variational principle expressing the effective energy function of a given nonlinear composite in terms of the effective energy functions of the class of linear comparison composites. This provides an automatic procedure for converting well-known information for...

Current Problems in Surgery keeps readers up-to-date on the latest surgical advances. Each month, this publication examines a single clinical problem or condition commonly seen by general surgeons. Issues also focus on topics in surgical research and emerging ideas in surgical subspecialties. Current Problems in Surgery is ideal for information too urgent to await book publication, yet too impo...

When the World Trade Centre was destroyed in New York on 11 September 2001, I felt devastation for all the victims of this atrocity. This included the terrorist themselves as well as the families of the dead and injured and of the perpetrators. When America used this atrocity as a reason to attack Iraq I was very disturbed by the transposition of lines of blame to a country that had no direct l...

An enquiry into the present condition of the Persian province of Baluchistan, its antecedents and potentialities Disciplines Anthropology | Social and Behavioral Sciences This journal article is available at ScholarlyCommons: http://repository.upenn.edu/anthro_papers/138

Null hypothesis statistical testing (NHST) has been debated extensively but always successfully defended. The technical merits of NHST are not disputed in this article. The widespread misuse of NHST has created a human factors problem that this article intends to ameliorate. This article describes an integrated, alternative inferential confidence interval approach to testing for statistical dif...

Dear Editor: The article by Dr Gavin Andrews on the burden of depression in the July 2008 In Review on the epidemiology of depression intends to inform our psychiatrist colleagues and Canadian policy-makers about the prevalence of depression and its policy implications. Policy-makers need to be informed on the nature of the disorder to better allocate health funds adequately between treatment, ...

Bankruptcy is an event with strong impacts on management, shareholders, employees, creditors, customers and other stakeholders, so as bankruptcy challenges the country both socially and economically. Therefore, correct prediction of bankruptcy is of high importance in the financial world. This research intends to investigate financial crisis prediction power using models based on Neural Network...