1,434 research outputs found
Equipartition of Current in Parallel Conductors on Cooling Through the Superconducting Transition
Our experiments show that for two or more pieces of a wire, of different
lengths in general, combined in parallel and connected to a dc source, the
current ratio evolves towards unity as the combination is cooled to the
superconducting transition temperature Tc, and remains pinned at that value
below it. This re-distribution of the total current towards equipartition
without external fine tuning is a surprise. It can be physically understood in
terms of a mechanism that involves the flux-flow resistance associated with the
transport current in a wire of type-II superconducting material. It is the fact
that the flux-flow resistance increases with current that drives the current
division towards equipartition.Comment: Revised version of J.Phys. Condens.Matter; vol. 18(2006) L143-L147 14
pages including 3 figures; provided an explanation in terms of the physical
mechanism of flux flow induced resistance that is proportional to the
impressed current. We are adding a simple, physically robust derivation of
our equipartition without taking resort to the minimum dissipation principl
A Case of Multiple Sclerosis Presenting as Eight and Half Syndrome.
Multiple sclerosis (MS) is a chronic disease characterized by inflammation, demyelination, gliosis (scarring), and neuronal loss; the course can be relapsing-remitting or progressive. Manifestations of MS vary from a benign illness to a rapidly evolving and incapacitating disease requiring profound lifestyle adjustments. We report a 24 year old female who presented with right internuclear ophthalmoplegia with right lower motor neuron facial nerve palsy which is called eight and half syndrome. The etiology in our patient was multiple sclerosis which was confirmed by radio-imaging studies. Patient improved on pulse therapy of methyl prednisolone and tapering dose of steroids
The Role of Public Trust in People\u27s Subjective Well-Being
Kenneth Arrow, perhaps the most influential economist after John Maynard Keynes in the 20th century, viewed trust as a lubricant that fosters cooperative behaviour and thus facilitates mutually advantageous economic exchanges in the presence of incomplete contracts and imperfect information. Recent research has confirmed the beneficial effects of trust in government on economic performance. The obverse, that an erosion of trust in public institutions (state, judiciary and police) has deleterious effects on economic performance, is equally true. Various recent accounts do not just corroborate an erosion of trust in governance, but also point to the imperative of strengthening it to break out of the deep recession that India’s economy is in. The fiscal stimulus has been too little, too late
Endothelial dysfunction in a child with Pearson marrow-pancreas syndrome managed with Descemet stripping automated endothelial keratoplasty using a suture pull-through techniqu
A 4-year-old girl with a history of Pearson marrow-pancreas syndrome presenting with severe, progressive photophobia was found to have bilateral, diffuse corneal thickening and peripheral pigmentary retinopathy. She underwent Descemet stripping automated endothelial keratoplasty (DSAEK) surgery in both eyes using a modified suture pull-through technique. Postoperatively there was no evidence of cataract formation or graft detachment; her corneas thinned, and her photophobia improved dramatically
Internet-based Technologies: Value Creation for the Customer and the Value Chain Across Industries
The focus of this paper is to investigate issues related to Internet-based technologies and their enabling effects on the value chain of companies in various industries. Additionally, we are also in the process of investigating whether firms are using Internet-based technologies for differentiation or cost strategies (Porter, 1985) through coordination and bundling of service offerings across several industries. This is a research in progress
Market Reactions to Intellectual Property Infringement Litigations in the Information Technology Industry
The information technology industry is characterized by constant innovation and substantial expenditures on research and development. Firms attempt to protect their investment in research and development and retain a competitive edge in the industry by obtaining patents and copyrights. These intellectual properties are important intangible assets that are evaluated by the financial markets and can be observed in the market price at which the common stock is traded. If a firm announces a lawsuit claiming that its intellectual property has been violated, the markets have to form an opinion about several matters, viz. the merit of the lawsuit, the probability of a verdict favoring either party, the damages which will be awarded, if any, and managerial time and effort expended in the process. We are unable to observe these inputs, but can measure the impact of these factors on the stock price
Trust in Hospitals-Evidence from India
Various explanations have been offered for outbursts of violence against doctors and other staff in India, drawing attention to growing supply-demand imbalance in healthcare, quality deterioration, overburdened doctors, weak security for medical staff, high expectations of patients who come in advanced stages of chronic and other illnesses, overcrowding of public hospitals with limited sanitary facilities. But underlying all these explanations is lack of trust in doctors and hospitals-especially public. Our focus here is on trust and its covariates over the period 2005-2012. The motivation stems from the fact that the existing evidence is patchy and scattered. Our aim, therefore, is to build on the empirical evidence through a systematic state-of-art analysis of trust in public and private hospitals and doctors. Combining our analysis with other evidence, we identify specific challenges to build patient-hospital trust and how these could be overcome
Poverty Transitions, Health, and Socio-Economic Disparities in India
SDGs offer an inclusive and just vision for 2030, in which the interrelationships between (near) elimination of poverty, health reforms and elimination of socio-economic disparities play an important role. The present study focuses on the associations between poverty transitions over a period, and health indicators such as NCDs, disabilities, socio-economic disparities, state affluence and inequality in income distribution. These health indicators reflect their growing importance in recent years. We have used a Multinomial Probit specification which is an improvement on the methodologies used in earlier research. The analysis is based on panel data from the India Human Development Survey 2015. What our analysis emphasises is that changes in the prevalence of poverty/headcount ratio over time do not throw light on how poverty has evolved: whether there were escapes from poverty, whether there were descents into poverty, whether segments persisted in poverty, and whether (the relatively) affluent remained largely unaffected. A significant contribution of this study is to explore the relationships between such poverty transitions and NCDs and disabilities, socio-economic disparities and other covariates. The analysis confirms these linkages. Drawing upon this analysis and other relevant research, policy challenges in achieving the SDG vision of an inclusive and fair economy are delineated
Market Reactions To Patent Infringement Lawsuits In Information Technology Industry
Over the years the number of patent infringement lawsuits in the Information Technology industry has increased tremendously. The increase in patent disputes can be partly attributed to the increase in the number of patents issued. The number of patents issued for software developments alone has risen from 25 in 1970 to 600 in 1991. The total number of patents issued till 1992 was about 9000. The damages awarded to patentees in such litigations is substantial. It is argued that some of these high technology companies are using the intellectual property rights laws as a weapon to thwart competition in their markets. In the US, while the inventor is waiting for the patent on the invention, manufacturers may develop and begin using similar technology, but once the patent has been issued, the inventor can demand the damages from the manufacturer using the technology. Many of the top executives believe that it is beneficial to settle infringement cases than dispute it in a court of law. This view is again raised in the patent infringement dispute between Intel Corp. and AMD Corp., who spent almost $200 million on the patent dispute over several years. To our knowledge no empirical study has been undertaken to study the impact of patent infringement lawsuits on the information technology companies involved. Though markets analysts have suggested that the market value of the firms fluctuates in accordance with the direction of the lawsuit proceedings, no concrete evidence of these effects have been shown in the literature. This study aims to study the impact of the patent infringement lawsuits and the lawsuit decisions on the IT companies involved. The impact on the stock holder returns is used as the empirical evidence of the impact of the litigation on the IT company. Findings of thestudy are expected to provide valuable insights into market perception of the ethical issues in a high technology industry. More specifically, how does the market view the ethical conduct of an IT company? Does it impose a high risk on a company suspectedof unethical conduct in its business strategies?. In addition to the ethical issues involved, the economic viability of fighting a law suit is also examined, i.e., does the market perceive a net benefit or loss to the company as a result of fighting a lawsuit? Does the market perceive a net benefit or loss to the company as a result of the decision made on the law suit?. The findings of the study would be useful to both the policy formulators and managers alik
Persistence of Non-Communicable Diseases, Affluence and Inequality in India
This study builds on the extant literature by highlighting the persistence of non-communicable diseases (NCDs), their cross-associations, and how these diseases are linked to different forms of inequality-socio-economic, gaps in affluence measured by asset quartile, and in the overall economic environment, based on a nation-wide panel survey, India Human Development Survey 2015. A multinomial probit specification is used to analyse NCD outcomes. Those at the bottom of the caste hierarchy and least wealthy exhibit lowest vulnerability to NCDs despite their deprivation and limited access to healthcare facilities while those at the higher end of the caste hierarchy and the wealthiest are most vulnerable. However, overall economic inequality, using Piketty’s (2013) measure, is insidious as it corrodes social cohesion and support, and the capability to live a healthy and productive life. New light is thrown on whether social networks are associated with better NCD outcomes. So policy interventions have to be not just medical but much broader in scope
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