非师范院校普通话技能分级训练之探索

21世纪是一个以知识为主导资本,信息为主导资源的崭新时代,新的社会需求使人们对话言能力有了新的认识,该文结合时代对人的语言素质的要求和浙江方言区非师范院校学生的普通话实际情况,探讨了普通话训练要以语音层级为主,兼顾词汇和语法层级,精心设计训练方式,培养和提高大学生的语言意识和语言能力。     

对旅游产品的几点看法

旅游服务和旅游商品是旅游产品的组成部分,提供便利设施是旅游产品的开发;提供旅游服务的过程是旅游产品的生产;旅游线路是旅游产品的生产流水线;资源和设施是生产旅游产品的劳动工具,旅游产品的所有制和使用权是不可分离的。     

A method for reducing information asymmetry in destination–airline relationships

We propose a measure of business risk in air travel demand at the route level that can reduce information asymmetry during route development negotiations between tourism destinations and airlines. Aviation-exposed risk (AER) conveys information about the level of uncertainty with regard to air travel demand from an airline’s perspective. Using AER, tourism destinations and air service development teams can evaluate their risks from the perspective of the airline and its network. From there, an assessment can be made as to the value of air services in certain circumstances, including whether a direct underwrite or risk share between airlines and destinations is viable and necessary. By applying a portfolio analysis to an airline’s network, we find evidence that AER does indeed mimic the actual capacity distribution of the network. This provides support for AER as a useful risk measure to be used in practice.     

Optimal route decision with a geometric ground-airborne hybrid model under weather uncertainty

Adverse weather is the dominant cause of delays in the National Airspace System (NAS). Since the future weather condition is only predictable with a certain degree of accuracy, managing traffic in the weather-affected airspace is a challenging task. In this paper, we propose a geometric model to generate an optimal combination of ground delay and route choice to hedge against weather risk. The geometric recourse model (GRM) is a strategic Probabilistic Air Traffic Management (PATM) model that generates optimal route choice, incorporating route hedging and en-route recourse to respond to weather change: hedged routes are routes other than the nominal or the detour one, and recourse occurs when the weather restricted airspace becomes flyable and aircraft are re-routed to fly direct to the destination. Among several variations of the GRM, we focus on the hybrid Dual Recourse Model (DRM), which allows ground delay as well as route hedging and recourses, when the weather clearance time follows a uniform distribution. The formulation of the hybrid DRM involves two decision variables - ground delay and route choice - and four parameters: storm location, storm size, maximum storm duration time, and ground-airborne cost ratio. The objective function has two components: expected total ground delay cost and expected total airborne cost. We propose a solution algorithm that guarantees to find the global optimum of the hybrid-DRM. Based on the numerical analysis, we find that ground-holding is effective only when combined with the nominal route. Otherwise, it is optimal to fly on the route determined by the DRM without ground delay. We also find the formula of the threshold ground-airborne cost ratio, which we call the Critical Cost Ratio (CCR), that determines the efficacy of ground delay: the higher the CCR, the more effective the strategies involving ground delay. We conclude that both ground delay and route hedging should be considered together to produce the best ATM decisions.     

我国垃圾焚烧发电技术创新的路径分析

文章分析了技术创新的路径与垃圾焚烧发电技术创新环境、条件,认为目前我国不具备垃圾焚烧发电技术自主创新的条件,只具备模仿创新的条件.因此,当前我国垃圾焚烧发电技术创新路径应是以模仿创新为主,并逐渐向自主创新转变.     

包拯形象脸谱化成因分析

历史上真实的包拯身材矮小、皮肤白皙,与民间传说乃至文学作品里的包拯简直判若两人,这一现象背后究竟隐秘什么样的原因呢?本文试图从民间神话传说、文化环境、政治气候、脸谱艺术本身等方面对之进行探讨,以期达到解惑释疑之目的。     

试述刘少奇对“人民内部矛盾理论”的探索过程

从民主革命时期、新民主主义社会向社会主义社会过渡时期、社会主义建设时期三个方面论述了刘少奇对人民内部矛盾理论的探索,指出它对四化建设有重要的指导意义。     

关于搞好“三讲”教育巡视指导工作的思考

巡视组在“三讲”教育中发挥了不可替代的作用 ,巡视组必须认真履行“检查、指导、督促、把关”的工作职责 ,必须正确处理好发动与引导的关系 ,教育和调动干部积极性的关系 ,现实问题与历史问题的关系 ,依靠党委 (组 )和独立行使职能关系等     

美学视阈下的大学生思想政治教育

创造美、欣赏美是人类的本质属性,大学生思想政治教育是人类创造美的活动领域之一,也是通过改造人的主观世界而达到改造客观世界目标的一个特殊领域,所以大学生思想政治教育是而且可以是美的。传统的以灌输为主的理性化大学生思想政治教育方法已经不能满足目前教育的需要,因此,在美学视阈下探讨大学生思想政治教育至关重要。     

流量仪表的发展趋势探讨

流量仪表被广泛应用于生产、生活领域，而应用在工矿企业中的流量仪表则在这些企业的生产中有着举足轻重的地位。随着科学技术的发展，各式各样的仪表应运而生，并在不同的领域里发挥出积极的作用。