background: the prevalence of allergic diseases has risen in the last decades. the objective of this study was to determine the common allergens in children via the skin prick test. methods: this cross-sectional study recruited 313 allergic children (4 months to 18 years old) referred to the asthma and allergy clinic of children’s medical center in tehran. a questionnaire containing demographic...

This paper addresses the security and efficiency issues of the Mix-net based on permutation networks introduced in [1]. We first show that the original construction results in a Mix-net that yields biased permutation, so it gives some advantage to adversaries. A simple repair is provided. We then observe that one of the original schemes can be improved so that the servers and verifier enjoy mor...

We present the architecture, design issues and functions of a MIX-based system for anonymous and unobservable real-time Internet access. This system prevents tra c analysis as well as ooding attacks. The core technologies include an adaptive, anonymous, time/volumesliced channel mechanism and a ticket-based authentication mechanism. The system also provides an interface to inform anonymous user...

This paper examines and critiques the ways in which the national government supports the conservation of currently private land. The federal government regulates the development of private land through laws such as the Endangered Species Act; finances the acquisition of fee and other interests in land by federal, state, and local governmental agencies; provides grants to land trusts and other n...

University of Twente The paper assesses the current standing of the 4Ps Marketing Mix framework as the dominant marketing management paradigm and identifies market developments, environmental changes, and trends, as well as changing academic attitudes likely to affect the future of the Mix as theoretical concept and also the favourite management tool of marketing practitioners. It reviews the c...

Western democracies have developed complex policies to manage migration flows. Much of the scholarly literature and political discourse assume that countries become increasingly selective they prioritise economic intakes. Despite clear efforts by policymakers distinguish between refugees migrant workers, we know surprisingly little about how combine different policy dimensions which factors sha...

For many years, the asphalt industry has been aware of the energy savings and environmental benefits inherent in cold mix or warm mix asphalt technologies. Environmental awareness and the need for improved energy efficiency has increased rapidly over the past few years and extensive measures such as the air pollution reduction targets set by the European Union under the Kyoto Protocol have enco...

Product-mix problems, where a range of products that generate different incomes compete for limited set production resources, are key to the success many organisations. In their deterministic forms, these simple optimisation problems; however, consideration stochasticity may turn them into analytically and/or computationally intractable problems. Thus, simulation becomes powerful approach provi...

Mediation is an important application of XML. The MIX mediator uses Document Type De nitions (DTDs) to assist the user in query formulation and query processors in running queries more e ciently. We provide an algorithm for inferring the view DTD from the view de nition and the source DTDs. We develop a metric of the quality of the inference algorithm's view DTD by formalizing the notions of so...