Comparison of public perception and risk management decisions of aircraft noise near Taoyuan and Kaohsiung International Airports

This study uses multiple linear regression to identify factors contributing to perceived risk among residents near Taoyuan and Kaohsiung International Airports, the effect of perceived risk on their willingness to reduce risk, and consumption preferences that can reduce risk. Results indicated that residents' risk perception near Taoyuan Airport is lower than that near Kaohsiung Airport. Noise pollution experience, perceived probability of environmental contamination and negative effects, and perceived severity of catastrophic consequences significantly increase residents' perceived risks. Residents are willing to recognize and participate in mitigating the risks of aircraft noise pollution. The more risk residents perceive, the more willing they are to participate in disaster reduction and investigate means of improving the risk environment.     

Determining the integrated volatility via limit order books with multiple records

The integrated volatility plays an important role in risk management and portfolio selection, the estimation methods regarding the quantity have been widely investigated, either under low-frequency data or high-frequency data, or a combination of both. In this paper, we propose a measure for the integrated volatility via limit order book data with possible presence of multiple records. The estimator is valid under mild conditions and it is easily implemented. The finite sample performance of the proposed estimator has been verified by simulation studies and we apply the method to some real high-frequency data-sets as well.     

An estimation of returns to scale of airport airsides under multiple optimal solutions in DEA

The returns to scale (RTS) nature of 37 Chinese airport airsides are investigated in this paper. Multiple optimal solutions in DEA (Data Envelopment Analysis) models may lead to error RTS estimation. To address this problem, we use the (Zhu and Shen, 1995) RTS method. The empirical study shows that all those airsides with two runways operate under decreasing RTS and those airsides with only one runway either operate in the area of increasing RTS or in the area of constant RTS.     

Probabilistic assessment of fleet-level noise impacts of projected technology improvements

Demand projections for civil aviation have forecast increases in operations in future decades. Increases in demand are beneficial to the growth and advancement of the aviation industry, but also come with the threat of significant increase in environmental impacts. In response, the industry is focusing on programs to develop technologies for reductions in fuel burn, NO_x emissions, and noise. While aircraft-level impacts are an obvious metric of success, it is difficult to make informed robust technology investment decisions with respect to noise without understanding the fleet-level impacts. Fleet-level predictions of noise for technology explorations are especially complicated because it is computationally expensive, highly combinatorial, and airport-specific. Recently, rapid automated airport noise models have been developed, which can be simulated using Design of Experiments (DOE). The results of these simulations are used to generate surrogate models for airport noise contour area, which can be summed to yield a fleet-level impact. These models make use of simplifying assumptions to provide estimates of airport-level noise that are substantially cheaper to compute. They can be used to perform parametric trade-off analyses in conjunction with the equivalency assumption. Equivalency asserts that environmental impacts of a technology infused aircraft can be represented by scaled operations of the baseline aircraft in the same class. This simple assumption allows for the modeling of technology and market penetration factors under the same units: operations. This research uses surrogate models in conjunction with the equivalency assumption to examine two potential technology scenarios in a target forecast year, simulating technology and market performance factors to identify vehicle classes that could have the greatest impact in reducing contour area. Results show that technology and market performance of future notional Small Single Aisle and Large Single Aisle vehicle aircraft have the highest positive correlations with potential reductions in contour area.     

多元智能理论对独立学院英语教学改革的启示

多元智能理论是美国哈佛大学著名心理学家加德纳于1983年在其著作《智能的结构》中提出来的。该理论认为人类拥有多种相互独立的一些智能,而每个人都有着不同的智能组合。如果能够建立一种教育体系,开发学生多种不同的智能潜力,帮助他们发展其独特的智力特点,就会促进学生全面而又有个性的发展。就独立学院的英语教学改革而言,多元智能理论对当前教学环境的变革、对教学理念和教学内容的重新解读以及对教学评价的多样化思考都产生了深远的影响。     

多重目标下我国国有企业效率分析

我国是社会主义国家,这就决定了我国国有企业不能仅仅追求利润这一简单目标,而更要注重实现其他各项目标,从而更好地服务国家和社会大众.衡量国有企业的效率,不能只根据某些财务指标进行分析,还必须看到国有企业的多重目标.以工业总产值、资产总额等作为评判指标,衡量国有企业的经济实力;以劳动生产率和销售利润率作为评判指标,衡量国有企业的生产赢利能力;以工业增加值增长速度的变异系数和潜在增长速度作为评判指标,衡量国有企业增长的稳定性和发展潜力;以创新产品销售收入占比和研发经费投入作为评判指标,衡量国有企业的自主创新能力;以入选《财富》世界500强和世界品牌500强的数量作为评判指标,衡量国有企业的竞争力;以创造就业机会、慈善捐赠数量等作为评判指标,衡量国有企业的社会责任意识.整体来看,我国国有企业的发展是有效率的,而且其效率不逊色于私营企业和外资企业.鉴于国有企业发展的高效率和实现目标的多重性,今后要继续着力培育能够主导经济发展、贯彻宏观调控、保障经济安全、承担社会责任、参与高端竞争、促进技术进步的国有企业.     

Investigating mediators between corporate reputation and customer citizenship behaviors

Recent corporate reputation research focuses on customers as an important stakeholder group for whom firm reputation matters. The authors hypothesize that customer-based corporate reputation (CBR) may affect customer citizenship behaviors (CCB) and that both commitment and loyalty mediate the CBR-CCB relationship. The tests of the hypotheses use a sample of 583 service customers who evaluate the reputation of service firms. These results suggest that commitment and loyalty mediate the relationship between CBR and one type of CCB, that is, helping the company. The authors discuss the implications for marketing research and practice.     

《审计案例》课程教学改革初探

为了培养专业胜任能力强的审计会计人员,作为审计学中的重点实践课程--<审计案例>的教学改革已经势在必行.审计案例课程的改革必须摒除传统课程仅从课本上学习,依赖老师授课的平面性,创造仿真教学环境,将审计基础理论课程与审计案例课程的授课进度相结合,并引入"讨论式教学"的授课方式,激发学生的学习兴趣.同时利用角色扮演案例、自...     

目标管理对高校思想政治教育的影响

21世纪,高校思想政治教育工作面临着诸如社会价值多元化、学生思想多样化等挑战,如何运用有效的手段和方式进行高校的思想政治教育工作,是我们高校思想政治教育工作面临亟待解决的问题,文章主要运用管理学中的目标管理对当今高校思想政治教育工作方法进行研究和探讨.