Search results

The purpose of this research is to develop a method for automatic construction of multi‐document summaries of sets of news articles that might be retrieved by a web search engine in response to a user query.

Based on the cross‐document discourse analysis, an event‐based framework is proposed for integrating and organizing information extracted from different news articles. It has a hierarchical structure in which the summarized information is presented at the top level and more detailed information given at the lower levels. A tree‐view interface was implemented for displaying a multi‐document summary based on the framework. A preliminary user evaluation was performed by comparing the framework‐based summaries against the sentence‐based summaries.

In a small evaluation, all the human subjects preferred the framework‐based summaries to the sentence‐based summaries. It indicates that the event‐based framework is an effective way to summarize a set of news articles reporting an event or a series of relevant events.

Limited to event‐based news articles only, not applicable to news critiques and other kinds of news articles. A summarization system based on the event‐based framework is being implemented.

Multi‐document summarization of news articles can adopt the proposed event‐based framework.

An event‐based framework for summarizing sets of news articles was developed and evaluated using a tree‐view interface for displaying such summaries.

This paper aims to examine the time it would take to provide medical prophylaxis for a large urban population in the wake of an airborne anthrax attack and the effect that various parameters have on the total logistical time.

A mathematical model that evaluates key parameters and suggests alternatives for improvement is formulated. The objective of the model is to minimize the total logistical time required for prophylaxis by balancing three cycles as follows: the loading cycle, the shipping cycle and the service cycle.

Applying the model to two representative cases reveals the effect of various parameters on the process. For example, the number of distribution centers and the number of servers in each center are key parameters, whereas the number of central depots and the local shipping method is less important.

Various psychological factors such as mass panic are not included in the model.

There are few papers analyzing the logistical response to an anthrax attack, and most focus mainly on the strategic level. The study deals with the tactical logistical level. The authors focus on the distribution process of prophylaxis and other medical supplies during the crisis, analyze it and identify the parameters that influence the time between the detection of the attack and the provision of effective medical treatment to the exposed population.

When modeling environmental jolts from terrorist attacks, various aspects should be analyzed in order to properly present an accurate configuration. The following article discusses how asymmetrical warfare has an impact on the outcomes of a terrorist attack. The several dimensions of terrorist attacks can be extracted to deduce the ways that asymmetrical warfare can damage the health care system. The article will relate real life terrorist attacks and hypothetical scenarios to better inform the reader about the weak attacking the strong, and then explain how this relates to health care providers.

Terrorists’ threats pose a grave danger to the health care environment in which we live. In the following paper, we look at how bioterrorist plots can effect a given population and show ways to dissect terrorist actions. We look at variables that use various cause and effect relationships, and lead the reader down a path of being able to use information presented in a real life or fictitious bioterrorist attacks. We seek to inform the reader reasons why preparedness is essential in dealing with the likelihood of the following scenarios.

To describe a new high sensitivity, nanotechnology‐based technique for detecting DNA and disease‐related proteins.

Gold nanoparticles and magnetic microparticles are bound to single‐stranded DNA molecules that are complementary to segments of the target DNA. The nanoparticles also link to hundreds of strands of “barcode” DNA and in the presence of the target, each molecule binds to a gold nanoparticle and a magnetic microparticle. Applying a magnetic field enables the separation of the target molecules and their attachments. The DNA is removed from the molecules and detected by a chip‐based DNA procedure. As each nanoparticle links to a large number of strands of DNA, the method amplifies the signal from each target molecule. The technique can also detect proteins by replacing the complimentary DNA with antibodies.

This research shows that this technique can detect very low concentrations of DNA and proteins. Ten copies of anthrax DNA were detected in 30 μl of solution, a sensitivity comparable to polymerase chain reaction, and 18‐20 PSA molecules were detected in a 10 μl sample, a level of detection that is six orders of magnitude more sensitive than conventional assays. Recent research has also shown that the assay can detect ADDLs, which are biomarkers for Alzheimer's disease. The technologies are now being commercialised by Nanosphere, Inc.

These developments offer prospects in a wide range of clinical applications such as the rapid and simple diagnosis of a variety of diseases and single nucleotide polymorphisms tests for the detection of hypercoagulation disorders. Other potential applications include homeland security and environmental monitoring.

The threat of future biological attacks within the United States forces the additional responsibility of preparedness and response onto health care managers. An endless amount of information on this topic can be readily obtained from a variety of sources. The purpose of this resource guide is to provide health care managers with a well-organized, up-to-date listing of credible sources that can be accessed electronically. This resource guide is designed to facilitate the retrieval of relevant information that is crucial in the process of health care managers designing a bioterrorism preparedness and response plan.

The implications of a bioterrorist attack within the United States were well observed in the 2001 anthrax attacks. The effects of these attacks were not only felt by the primary victims but also reached into communities and health care organizations that treated patients. The concerns for future attacks have spurred an enormous amount of interest and forced health care administrators to implement safety measures and develop plans encompassing preparedness and response. With respect to this topic, a major problem facing health care managers is the ability to obtain relevant, up-to-date, reliable information.

Many health care managers are aware of the endless amount of resources that are available pertaining to preparedness and response planning. It should also be noted that the information concerning bioterrorism rapidly changes and the available information can be overwhelming. To that end, the authors have compiled an array of selected websites that provide excellent, up-to-date, and unique resources in attempts to facilitate the gathering of knowledge and make that experience more efficient.

The objective of the following resource guide is to provide a comprehensive list of topics in a “user-friendly” format that can be obtained electronically. To facilitate information retrieval, electronic resources have been categorized according to topic. For example, up-to-date information concerning the multitude of biological agents can be obtained by using the links contained within the biological agents category. Under this topic heading you will find a listing of important resources. Each listing contains a heading that identifies the sponsoring organization, a short explanation of information and materials that can be expected, and a web address identifying its location.

The authors’ compilation was not intended to be exhaustive nor do the authors necessarily endorse or warrant the reliability of the information/products. Websites may change regularly; please visit www.bioterrorism@ba.ttu.edu to obtain an electronic version of this resource guide and for updates to web addresses.

The possibility of a bioterrorism event haunts all healthcare organizations. We believe a bioterrorism event is more likely in an urban area, and that urban multiprovider systems will be the “first line healthcare responders.” Due to the lack of empirical research on this topic and firsthand experience with a bioterrorism event, this paper will provide the theoretical underpinnings to support the rationale for multiprovider systems as “first responders.” This chapter outlines the nature and challenges of bioterrorism for a healthcare organization, the likely “state of the art” preparations for such events on the part of the four categories of healthcare organizations, and finally, the implications for the structuring of multiprovider systems to enhance their ability to plan for, and respond to bioterrorism events. Potential future research issues are also addressed.

The history of Vozrezdheniye Island in the Aral Sea is recounted, both to establish the related hazards and to acknowledge the underlying social process it shares with the Aral Sea Disaster, itself. A Closed City, part of the secretive world of Soviet arms manufacture and testing, carried out a hidden agenda of experimentation in the heart of the vast blue sea. Even as the Aral Sea was polluted and starved of water from without, parallel authoritarian regimes were poisoning its heart at the center. In this way, the military industrial complex became an actor with parallel duplicity to the public planned economic sector in charting the death of the Aral Sea. Ironically, the very attraction of Rebirth Island as an isolated weapons testing ground was undermined by the actions of the Soviet government to desiccate the Aral Sea, thus uniting Vozrezdheniye to the main shore and destroying its seclusion. In both instances, the case study is a further indicator that the people of Karakalpakstan were considered marginal and expendable, underscoring environmental injustices that continue long after the demise of the Aral Sea.