基于ASP.NET的飞机订票系统的设计与实现

介绍了应用ASP.NET技术进行飞机订票系统的设计与实现。飞机订票系统实现了旅客在线航空订票,包括选择航空公司、出发/到达时间、票额、航班类型、出发地/目的地等信息。首先分析了目前飞机订票系统的现状,得出并开发出一个更便利的订票系统来提高飞机票管理效率,提高公司服务质量,实现服务的现代化,方便旅客的外出远行。然后利用ASP.NET和Microsoft SQL Server 2005数据库为技术基础,完成飞机订票系统的设计与实现。通过测试,系统运行稳定,可达到预期目标,有一定实用价值。     

A330飞机头等舱阅读灯软管断裂故障的工程解决措施

一、阅读灯故障背景川航A330机队头等舱(公务级)座椅安装的是F0404857型阅读灯,该阅读灯位于两个相连的头等舱座椅之间,从上方为旅客提供阅读灯光。F0404857阅读灯在川航已使用超过4年,故障率较高,严重影响了飞机运行品质,降低了航空服务质量。该阅读灯故障主要集中在灯不亮和灯杆柔性软管根部断裂这两项上。工程管理部对故障件进行了分析,     

波音737NG飞机燃油系统故障和可靠性数据分析

本篇论文主要针对飞机在运行过程中出现的典型燃油系统故障进行综合分析和评估其故障部件的可靠性,在排故过程中对出现故障的可能性进行一个综合的分析,最终发现问题所在,并对其可靠性数据进行分析总结,便于在燃油系统中工作的运用。     

737NG飞机全新EFLOW系统分析和预防措施

近期收到国内航空公司多起关于新构型的B737-800飞机EFLOW空调系统的故障报告,该系统存在非指令性关断空调,且在非指令性关断空调故障时没有驾驶舱警告的可能性,目前波音公司采用新的空调系统EFLOW的这个部件,会对飞机空调造成非指令性关断,本文主要介绍了航空公司如何采用新的方法来解决飞机在空中单空调关断的情况。     

厦门机场登机桥维护与升级改造

随着国民经济的发展和人民生活水平的提高,选择乘坐飞机出行的旅客越来越多,登机桥作为连接候机厅与飞机之间的辅助设备,供旅客上下飞机,使用频率越来越高。加强登机桥的维护,有针对性的进行技术升级改造,对提高登机桥运行的可靠性非常重要。文章以厦门机场在用登机桥维护和升级改造为例,讲述了常见的登机桥故障和管理措施及自动调平、升降机构立柱的维护与改造,保证登机桥设备运行可靠性。     

A320停留刹车故障分析与处理

本文针对飞机在地面停留刹车储压器压力无法保持住的故障,通过分析停留刹车系统和备用刹车控制原理,以及通过分析储压器的工作原理和部件故障分析模式方法,快速判断刹车储压器压力下降快的故障原因。最终提高排故准确性和排故效率。     

GTCP85-129型APU故障研讨分析

GTCP85-129型APU(辅助动力装置)的常见故障包括APU超速、高滑油温度、低滑油压力或无法起动等,文章对其故障及原理进行了探讨。随着在翼使用时间的增加,该型APU部件性能衰退和失效的情况也会增多,可以结合系统原理和实际经验进行分析,加快故障排除过程,提高飞机保障效率。     

客运专线旅客服务质量评价体系研究

未来客运专线运输市场将面对日益激烈的市场竞争和旅客不断提升的、高质量的服务需求,为了获得持续稳定的客流,必须不断提升服务水平。文章以既有线客运服务系统为基础,从旅客的角度出发,结合航空旅客服务系统,构建了客运专线服务质量评价体系,为判别客运专线服务质量提供了一种可行方法。     

波音737飞机扰流板无法收到位的故障分析

本文主要对波音737飞机运行中出现的典型的扰流板故障进行分析,根据故障现象依据维护手册,并结合以往经验,对故障相关部位进行逐一排查,发现故障源所在,更换部件。最后对故障进行了分析和经验总结。     

试述液压泵轴承故障的提取与诊断

在航空工业中,液压系统的工作性能直接影响着飞机的安全和旅客的生命,而液压泵是液压系统的动力源,因此对液压泵的状态监控与故障诊断尤为重要。轴承故障是液压泵常见的故障模式之一,由于轴承故障所引起的附加振动相对于液压泵的固有振动较弱,因而很难把故障信息从信号中分离开来。到目前为止,对液压泵轴承故障的故障诊断尚缺少十分有效的方法。     

Incumplimiento del salario mínimo en Europa central y oriental

En este estudio se analiza el incumplimiento del salario mínimo durante el periodo 2003–2012 en diez países de Europa central y oriental con salario mínimo obligatorio nacional. A partir de los datos de EU‐SILC y la metodología propuesta por Bhorat, Kanbur y Mayet (2013), se cuantifica la incidencia y magnitud del incumplimiento. Se realizan análisis de regresión sobre determinantes individuales, laborales y macroeconómicos. Aunque la incidencia permanece relativamente baja, los trabajadores a los que se dirigen las políticas de salario mínimo parecen los más expuestos a su incumplimiento. Con el tiempo, una mayor incidencia se asocia a una razón más alta entre salario mínimo y salario medio.     

Value at Risk in the Suburbs: Eminent Domain and the Geographical Politics of the US Foreclosure Crisis

Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.     

Towards a Theory of Serendipity: A Systematic Review and Conceptualization

Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.     

Accountability of NGOs in Bangladesh A critical overview

NGOs in Bangladesh have been recognized as effective change agents in the socio-economic arena throughout the world. Their contributions in micro credit, non-formal education and primary health care are widely known. NGOs play a significant role in society. NGO accountability, as a result, has become a critical issue. NGO accountability in Bangladesh has been examined here in relation to patrons, clients and themselves. Of the three relationships only accountability to patrons is in a near satisfactory state. Accountability to clients is handicapped by lack of opportunities of beneficiaries to participate meaningfully in NGO policy making. Accountability to themselves is adversely affected due to the adherence to a strictly hierarchical system and the influence of founding and charismatic NGO leaders.     

Towards an Asian model of human resource management? A comparative analysis of China,Japan and South Korea

There has been much discussion regarding the possible decline and weakening of national systems of human resource management (HRM). Yet, culture and institutions are often cited as the major stumbling blocks to this outcome. Such constraints may dissipate in the analysis, particularly if ‘regional clusters’ are considered where geographic and cultural closeness and ‘openness’ to similar economic pressures exist. In such cases, it might be postulated that convergence in HRM will occur. We argue that China, Japan and South Korea represent such a cluster. This article examines these countries, to see if a degree of convergence is taking place and if it is towards an identifiable ‘Asian’ model of HRM. A model of change is presented that distinguishes between levels of occurrence and acceptance. Details of the development and practice of HRM in each country are then set out. The article ends with a discussion and implications section and a brief conclusion.     

Cultural Economy Planning in Creative Cities: Discourse and Practice

While a growing body of research analyses the functional mechanisms of the cultural or creative economy, there has been little attention devoted to understanding how local governments translate this work into policy. Moreover, research in this vein focuses predominately on Richard Florida's creative class thesis rather than considering the wider body of work that may influence policy. This article seeks to develop a deeper understanding of how municipalities conceptualize and plan for the cultural economy through the lens of two cities held up as model ‘creative cities’ — Austin, Texas and Toronto, Ontario. The work pays particular attention to how the cities adopt and adapt leading theories, strategies and discourses of the cultural economy. While policy documents indicate that the cities embrace the creative city model, in practice agencies tend to adapt conventional economic development strategies for cultural economy activity and appropriate the language of the creative city for multiple purposes.     

Input/output ranges and performance: an examination of US machine tool producers

Despite the establishment of high-tech multinational enterprises (MNEs) in Ireland since the late 1950s, the country did not succeed in closing the technological gap with most of its EU counterparts. The weak National System of Innovation (NSI), and in particular low business and government R&D levels, combined with a lack of research and technology linkages between MNEs and indigenous firms, explain these poor results. However, the Shannon region in the West of the country presents some specific institutional characteristics that could theoretically make the region a strong technological enclave. The various actors in the region - i.e. the administrative, financial, political and research institutions, as well as the business organizations - have indeed infused a new type of economic development. After a brief review of the available concepts and models articulated around these actors and their interrelationships, the paper analyses whether the Shannon region, taken as an illustrative example, mirrors a specific economic and technological localized setting. The study is based on a survey of indigenous and foreign firms.     

Sixty years of discrimination and diversity research in human resource management: A review with suggestions for future research directions

This article reviews discrimination and diversity research published in Human Resource Management (HRM) over the past 60 years. While discrimination and diversity are very different constructs, it is often informative to study them together, because when people recognize each other's diversity, this can result in bias, stereotyping, and discrimination. We conducted bibliographic searches for terms related to discrimination and diversity as well as a manual search through every title and abstract published in HRM over the last 60 years to assess article relevance. The search resulted in 135 research articles with 136 unique studies (i.e., samples) which are reviewed in this article. Sex and race are the demographics that have been examined the most in HRM, while religion has been examined the least. Moreover, the number of studies examining lesbian, gay, bisexual, transgender, and queer (LGBTQ) employees in the workplace in HRM has grown quickly within the past 10 years, culminating in a recent meta‐analysis. Our review looks at some of the earliest research published, the most recent research published, and the overall trends we identified in the research over the years for both discrimination and diversity articles. We then make future research suggestions and recommendations to advance the study of discrimination and diversity in the coming years.     

Multinomial distributions applied to random sampling of particulate materials

When sampling a batch consisting of particulate material, the distribution of a sample estimator can be characterized using knowledge about the sample drawing process. With Bernoulli sampling, the number of particles in the sample is binomially distributed. Because this is rarely realized in practice, we propose a sampling design in which the possible samples have a nearly equal mass. Expected values and variances of the sample estimator are calculated. It is shown that the sample estimator becomes identical to the Horvitz–Thompson estimator in the case of a large batch-to-sample mass ratio and a large sample mass. Simulations and experiments were performed to test the theory. Simulations confirm that the round-off error due to the discrete nature of particles is negligible for large sample sizes. Sampling experiments were carried out with a mixture of PolyPropylene (PP) and PolyTetraFluorEthylene (PTFE) spheres suspended in a viscous medium. The measured and theoretical variations are in good agreement.     

The Early History of the Cumulants and the Gram-Charlier Series

The early history of the Gram-Charlier series is discussed from three points of view: (1) a generalization of Laplace's central limit theorem, (2) a least squares approximation to a continuous function by means of Chebyshev-Hermite polynomials, (3) a generalization of Gauss's normal distribution to a system of skew distributions. Thiele defined the cumulants in terms of the moments, first by a recursion formula and later by an expansion of the logarithm of the moment generating function. He devised a differential operator which adjusts any cumulant to a desired value. His little known 1899 paper in Danish on the properties of the cumulants is translated into English in the Appendix.