3,070 research outputs found
Diamagnetic Phase Transition and Phase Diagrams in Beryllium
The model of diamagnetic phase transition in beryllium which takes into
account the quasi 2-dimensional shape of the Fermi surface of beryllium is
proposed. It explains correctly the recent experimental data on observation of
non-homogeneous phase in beryllium at the conditions of strong dHvA effect when
the strong correlation of electron gas results in instability of homogeneous
phase and formation of Condon domain structure.Comment: 5 pages, 4 figure
Diversionary nationalism: Economic inequality and the formation of national pride
What accounts for differences in the extent of nationalist sentiments across countries and over time? One prominent argument is that greater economic inequality prompts states to generate more nationalism as a diversion that discourages their citizens from recognizing economic inequality and mobilizing against it. This article provides a first empirical test of this theory against rival explanations based on international conflict and the development of new nations using survey data on national pride in the advanced democracies over two decades, data on economic inequality from the Luxembourg Income Study, and data on international conflict from the Correlates of War project. Only the diversionary theory of nationalism is supported. This conclusion is an important contribution to our understanding of nationalism as well as of the effects of economic inequality on society
Temperature and Magnetic Field Dependencies of Condon Domain Phase in Lifschitz-Kosevich-Shoenberg Approximation
The temperature and magnetic field behavior of non-uniform diamagnetic phase
of strongly correlated electron gas at the conditions of dHvA effect is
analyzed. It is shown, that in the framework of Lifschitz-Kosevich-Shoenberg
approximation the magnetic induction splitting, as well as the range of
existence of Condon domains, are characterized by strong dependencies on
temperature, magnetic field and impurities of the sample.Comment: 7 pages, 7 figure
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Cardiac Catheter Reuse in An Era of Reform: Cost-Efficiency and Regulatory Policy in the Face of Scientific Uncertainty
Cardiac catheters have become an essential element of current cardiovascular practice with several hundred thousand used each year in both diagnostic and angioplasty procedures. Uke many other disposable devices they are also increasingly being reused as hospitals attempt to cut costs.' The general progression of device reuse seems to follow rather directly the rise in the expense of medical equipment and procedures. For example, in 1976, only 14% of United States' hospitals reported reusing single-use devices, while in 1982, 90% of hospitals admitted practicing reuse.2 As for the government's regulation of such reuse, 1981 saw the FDA issuing guidelines practically proscribing the reuse of catheters when their average cost was only 25.~ Even as late as 1987, however, only 2.4 full-time FDA employees and $19,000 were dedicated to monitoring the reuse of nondurable devices.4 The General Accounting Office concluded that the FDA knew of less than 1% of medical device problems occurring in hospitals.5 On the heels of the longstanding debate about the reuse of hemodialyzers and the Safe Medical Devices Act of 1990 and 1992 Medical Device Amendments, it appears as if the FDA is more receptive to tightening regulatory control over medical device reuse
DBpedia Mashups
If you see Wikipedia as a main place where the knowledge of mankind is concentrated, then DBpedia – which is extracted from Wikipedia – is the best place to find machine representation of that knowledge. DBpedia constitutes a major part of the semantic data on the web. Its sheer size and wide coverage enables you to use it in many kind of mashups: it contains biographical, geographical, bibliographical data; as well as discographies, movie meta-data, technical specifications, and links
to social media profiles and much more. Just like Wikipedia, DBpedia is a truly cross-language effort, e.g., it provides descriptions and other information in various languages. In this chapter we introduce its structure, contents, its connections to outside resources. We describe how the structured information in DBpedia is gathered, what you can expect from it and what are its characteristics and limitations.
We analyze how other mashups exploit DBpedia and present best practices of its usage. In particular, we describe how Sztakipedia – an intelligent writing aid based on DBpedia – can help Wikipedia contributors to improve the quality and integrity of articles. DBpedia offers a myriad of ways to accessing the information it contains, ranging from SPARQL to bulk download. We compare the pros and cons of these methods. We conclude that DBpedia is an un-avoidable resource for pplications dealing with commonly known entities like notable persons, places; and for others looking for a rich hub connecting other semantic resources
Standardizing the world income inequality database
Cross-national research on the causes and consequences of income inequality has been hindered by the limitations of existing inequality datasets: greater coverage across countries and over time is available from these sources only at the cost of significantly reduced comparability across observations. This article presents the Standardized World Income Inequality Database (SWIID), which standardizes the United Nations University database (UNU-WIDER 2008) while minimizing reliance on problematic assumptions by using as much information as possible from proximate years within the same country. The resulting series of gross and net income inequality data maximize comparability for the largest possible sample of countries and years and so are better suited to broadly cross-national research than other sources
Aircraft-sized anechoic chambers for electronic warfare, radar and other electromagnetic engineering evaluation
This paper considers capabilities and benefits of aircraft-sized radio/radar frequency anechoic chambers for Test and Evaluation (T&E) of Electronic Warfare (EW), radar and other electromagnetics aspects of air and ground platforms. There are few such chambers worldwide. Initially developed to reduce costs, timescales and risks associated with open-air range flight testing of EW systems, their utility has expanded to most areas of platforms’ electromagnetics’ T&E. A key feature is the ability to conduct T&E of nationally sensitive equipment and systems, fully installed on platforms, in absolute privacy. Chambers’ capabilities and uses are described, with emphasis on key infrastructure and instrumentation. Non-EW uses are identified and selected topics elaborated. Operation and maintenance are discussed, based on experiential knowledge from international use and the authors’ 30 years’ involvement with BAE Systems’ EW Test Facility. A view is provided of trends and challenges whose resolution could further increase chamber utility. National affordability challenges also suggest utility expansion to support continuing moves, from expensive and difficult to repeat flight test and operational evaluation trials, towards an affordability-driven optimal balance between modelling and simulation, and real-world testing of platforms
Shifting Perceptions Of Instant Ramen In Japan During The High-growth Era, 1958–1973
Instant ramen attained national prominence in Japan beginning in 1958 with the
release of the first nationally advertised brand, Chikin Ramen, produced and sold by
Momofuku Ando's Sanshī Shokuhin, later to be renamed the Nissin Foods
Corporation. From the time of its release, instant ramen became one of the most
widely advertised products in Japan. The industry, led by Nissin, was exceptionally
successful in utilising marketing campaigns to capitalise on social transformations.
The advertisements of the Nissin Foods Corporation are particularly useful
indicators of shifts in social organisation, reflecting the transformation of norms and
sensibilities occurring in Japan during the fifteen years following the introduction of
the emblematic food of convenience. Nissin Foods Corporation reinvented its
product and shifted advertising emphasis frequently to accommodate the changing
milieu with respect to convenience foods. Initially marketed as a healthy meal full of
essential vitamins and nutrients that provided an alternative to cooking for busy
housewives, instant ramen quickly became a defining product symbolic of postwar
youth culture in the 1960s. By tracing the shifts in instant ramen advertising from the
earliest ads in newspapers to later spots on television, the essay will examine the
evolving form and content of instant noodle advertising in Japan to illuminate the
connections between popular food trends and larger social and political changes
related to family organisation, nutritional science and projections of national identit
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