A two phases queueing system with Bernoulli vacation schedule under multiple vacation policy

This paper deals with a single server Poisson arrival queue with two phases of heterogeneous service along with a Bernoulli schedule vacation model, where after two successive phases service the server either goes for a vacation with probability p (0≤p≤1) or may continue to serve the next unit, if any, with probability q(=1−p). Further the concept of multiple vacation policy is also introduced here. We obtained the queue size distributions at a departure epoch and at a random epoch, Laplace Stieltjes Transform of the waiting time distribution and busy period distribution along with some mean performance measures. Finally we discuss some statistical inference related issues.     

The empirical analysis of the -bilateral optimized combinatorial auction model

This study proposes a new and highly efficient dynamic combinatorial auction mechanism—the N-bilateral optimized combinatorial auction (N-BOCA). N-BOCA is a flexible iterative combinatorial auction model that offers more optimized trading for multiple suppliers and purchasers in the supply chain than one-sided combinatorial auction. We design the N-BOCA model from the perspectives of market architecture, trading rules, and decision strategy for winner determination, the decision strategy for winner determination needs flexible optimization modeling capability. Thus rule-based reasoning was applied for reflecting the flexible decision strategies. We also show the viability of N-BOCA through Paired Samples T-test experimentation. It shows that N-BOCA yields higher purchase efficiency and effectiveness than the one-auctioneer to multi-bidders (1-to-N) combinatorial auction mechanism.     

An analysis of media reporting on the closure of freestanding midwifery units in England

ProblemDespite clinical guidelines and policy promoting choice of place of birth, 14 Freestanding Midwifery Units were closed between 2008 and 2015, closures reported in the media as justified by low use and financial constraints.BackgroundThe Birthplace in England Programme found that freestanding midwifery units provided the most cost-effective birthplace for women at low risk of complications. Women planning birth in a freestanding unit were less likely to experience interventions and serious morbidity than those planning obstetric unit birth, with no difference in outcomes for babies.MethodsThis paper uses an interpretative technique developed for policy analysis to explore the representation of these closures in 191 news articles, to explore the public climate in which they occurred.Findings and discussionThe articles focussed on underuse by women and financial constraints on services. Despite the inclusion of service user voices, the power of framing was held by service managers and commissioners. The analysis exposed how neoliberalist and austerity policies have privileged representation of individual consumer choice and market-driven provision as drivers of changes in health services. This normative framing presents the reasons given for closure as hard to refute and cultural norms persist that birth is safest in an obstetric setting, despite evidence to the contrary.ConclusionThe rise of neoliberalism and austerity in contemporary Britain has influenced the reform of maternity services, in particular the closure of midwifery units. Justifications given for closure silence other narratives, predominantly from service users, that attempt to present women’s choice in terms of rights and a social model of care.     

高温超导薄膜微波表面特性的研究

研究和设计了“终端反射式带状线谐振器”测试系统,配合测量数据处理软件包,对高温超导薄膜的微波表面特性进行了测试分析。     

《山海经·帝俊》与《乌古斯传》基于史诗角度之比较

《山海经·帝俊》是《山海经》中关于帝俊的内容,它是汉民族最古老的史诗遗迹,虽然残缺凌乱,却仍然保留下很多史诗母题,可供后世学者进行比较研究。而《乌古斯传》是突厥语民族最古老的史诗雏形,它在被发现时也是残缺的,篇幅也很短,但基本故事情节与母题已经很完整,正好可以与《山海经·帝俊》进行比较。通过比较,我们发现《山海经·帝俊》确实是一部残存的史诗,可以通过对《乌古斯传》的研究进行修复。     

Confidence regions for parameters in linear models with additional information

Using given significant additional information it is possible to improve different confidence regions for the regression parameters in a linear model. Thereby, the given informations may concern the expectation and (or) the variance of the observations, and an improvement is possible in the sense of the decrease of the confidence regions' size. In particular it is possible to improve the so called confidence ellipsoids which are often used to estimate the considered parameters.     

利率传导机制的部分失灵

利率政策是中央政府及中央银宏观调控经济的主要手段之一,其作用得以正常发挥的基础是市场经济体制.我国目前正处于市场经济的建设过程中,利率作用的传导必然受到多种因素的干扰,使其应有的作用难以正常发挥,本文就此阐述.     

数字式有效值多用表的设计

本设计可测量电压有效值、电流有效值、有功功率、无功功率、功率因数、电压基波及总谐波的有效值等一系列参数 ;采用 89C52单片机作为控制和运算的核心 ,充分利用其内部的 8KB代码存贮器和 2 56B的数据存贮器来进行数据的实时采样与处理 ;外围使用 1 2位的A D芯片可使测量精度高 ;利用数字电位器实现增益自动控制 ,从而满足各种大小量值的测量精度     

Economies of sacrifice: Recognition,monadism, and alien‐ation∗

Abstract

‘Economies of Sacrifice’ compares Girard's (1987) Hegelian inter‐dividualism to the Cartesian notion of the cogito and the Freudian theory of the unconscious in order to show how the monadic identity position violates the communicative balance of the self‐other bind. By looking at how both these thinkers constitute an identity category through the concept of sacrifice, the paper refers to the Girardian (1986) and Bataillean (1990) theories of violence and recognition in search of an alternative stance that may provide a more balanced view of human sociability. With regard to Bataille's theory of radical difference we can see how the idea which seeks to attack monadic individualism by destroying all identity advocates a principle of amoralism which views equality as ‘the generalisation of expendability’. As such, through reference to the work of Goux (1998) and O'Neill (2000) the article shows how the Bataillean thesis may pre‐empt the emergence of the post‐modern political economy. In light of this realisation the paper looks beyond both the Bataillean attempt to collapse identity, by exposing humanity to the total violence of the state of nature/post‐modern economic system, and the solipsistic theories of Descartes and Freud, which emphasis the centrality of the self at the cost of an acceptance of otherness, and towards Girard's theory of social justice as a communicative attempt to re‐state the importance of Hegelian recognition and human sociability.     

Acquired immunity: immunosenescence and physical activity

Several lines of evidence indicate that infectious diseases, cancer, and autoimmune disorders occur more frequently in elderly people, thus suggesting that altered function of immune organs and cells, such as thymus and T and B lymphocytes are of primary importance in the pathogenesis of these diseases. Furthermore, old subjects are less responsive to vaccine than younger because of immune changes. The most common changes accompanying the adaptive immune system include decrement of T and B cells proliferation, repertoire degeneracy, increase of the memory cell type, decreased numbers of naive cells, and shift from T helper₁ (Th1) to T helper₂ (Th2) response. Regular exercise in the elderly may improve the alterations in acquired immunity which follow the physiological process of aging, allowing a major resistance against external pathogens and a better quality of life.