Suchergebnisse

As the conventional energy resources are depleting there is an urgent need for switching to renewable energy resources as well as increasing its functionality. This paper proposes a design of coupling of brushless DC motor with a modified rear axle for a normal car. The Permanent magnet brushless DC motor is a high efficient in operation with high torque in range. The comparative investigation on the efficiency, weight, cost, cooling, maximum speed, and fault tolerance, safety, and reliability is carried out for switched reluctance motor, induction motor, permanent magnet blushless dc motor, and brushed dc motor drives, in order to find most appropriate electric motor drives for electric vehicle applications. The study shows permanent magnet brushless dc motor drives are the prior choice for electric vehicles. With ever-increasing concerns on our environment, there is a fast growing interest in electric vehicles (EVs) and hybrid EVs (HEVs) from automakers, governments, and customers. As electric drives are the core of both EVs and HEVs, it is a pressing need for researchers to develop advanced electric-drive systems. In this paper, an overview of permanent-magnet (PM) brushless(BL) drives for EVs and HEVs is presented, with emphasis on machine topologies, drive operations, and control strategies.

Abstract
Global CRM software spending was $7.8 billion in 2007 and is projected to reach $8.9 billion in 2008. Further, CRM software sales will touch $13.3 billion by 2012. These software and processes have made it possible for companies to gather and analyze large amounts of data on their existing and prospective customers. This article shows how customer-level data can lead to increased customer profitability through (a) selection of the right customers by using the Customer Lifetime Value (CLV) metric, (b) the nurturing of those right customers and, © re-allocation of resources to the profitable customers. Due to this approach profitable management of individual customers is the basis for growth in firm profitability. A case study will show how IBM used CLV as an indicator of customer profitability and allocated marketing resources based on CLV

Meta-Analysis ; This is the final version of the article. Available from the American Diabetes Association via the DOI in this record. ; Indians undergoing socioeconomic and lifestyle transitions will be maximally affected by epidemic of type 2 diabetes (T2D). We conducted a two-stage genome-wide association study of T2D in 12,535 Indians, a less explored but high-risk group. We identified a new type 2 diabetes-associated locus at 2q21, with the lead signal being rs6723108 (odds ratio 1.31; P = 3.32 × 10⁻⁹). Imputation analysis refined the signal to rs998451 (odds ratio 1.56; P = 6.3 × 10⁻¹²) within TMEM163 that encodes a probable vesicular transporter in nerve terminals. TMEM163 variants also showed association with decreased fasting plasma insulin and homeostatic model assessment of insulin resistance, indicating a plausible effect through impaired insulin secretion. The 2q21 region also harbors RAB3GAP1 and ACMSD; those are involved in neurologic disorders. Forty-nine of 56 previously reported signals showed consistency in direction with similar effect sizes in Indians and previous studies, and 25 of them were also associated (P < 0.05). Known loci and the newly identified 2q21 locus altogether explained 7.65% variance in the risk of T2D in Indians. Our study suggests that common susceptibility variants for T2D are largely the same across populations, but also reveals a population-specific locus and provides further insights into genetic architecture and etiology of T2D. ; The major funding for this work comes from Council for Scientific and Industrial Research, Government of India, in the form of the grant "Diabetes mellitus—New drug discovery R&D, molecular mechanisms, and genetic and epidemiological factors" (NWP0032-19). R.T. received a postdoctoral fellowship from the Fogarty International Center and the Eunice Kennedy Shriver National Institute of Child Health and Human Development at the National Institutes of Health (D43-HD-065249).