基于编码组建的公路工程计量支付台帐模型

基于有效编码组建的公路工程计量支付台帐能较好的满足现代高速公路项目信息管理的需求。论文针对高速公路全过程管理及信息化辅助管理,研究出完整编码体系,构建了计量支付台帐模型。     

对数相位板波前编码景深延拓系统研究

波前编码技术结合光学成像和数字信号处理,可以使系统的光学传递函数或点扩散函数对离焦不敏感,因而可以延拓光学成像系统的景深。文章以系统的点扩散函数对离焦不敏感为条件导出可以实现景深延拓的对数光瞳函数,这为目前波前编码技术中常用的3次相位调制函数提供了对照对象,为波前编码景深延拓技术的研究开辟了另一条途径。     

Improving the IATA delay data coding system for enhanced data analytics

Aviation delays inconvenience travelers and result in financial losses for stakeholders. Without complex data pre-processing, delay data collected by the existing IATA delay coding system are inadequate to support advanced delay analytics, e.g. large-scale delay propagation tracing in an airline network. Consequently, we developed three new coding schemes aiming at improving the current IATA system. These schemes were tested with specific analysis tasks using simulated delay data and were benchmarked against the IATA system. It was found that a coding scheme with a well-designed reporting style can facilitate automated data analytics and data mining, and an improved grouping of delay codes can minimise potential confusion at the data entry and recording stages.     

Disentangling the tourism sector’s fragmentation: a hands-on coding/post-coding guide for interview and policy document analysis in tourism†

Qualitative tourism research is inevitably multidimensional. The fragmentation of the tourism sector across policy domains, scales, space and stakeholders leads to ‘blurry’ and aggregated datasets. Yet, tourism studies have a weak record in describing how results emanate from raw qualitative data. This paper presents a coding/post-coding scheme that proved robust in disentangling multidimensional tourism datasets in a middle-range research project that necessitated reflecting on the position of the researcher and the literature study during the data analysis. It describes the pragmatic decisions taken to organise the qualitative data from a research project on cross-border tourism and regional development processes. The paper also functions as a reflexive account of how this scheme came into existence. It contributes to the tools available to practically acknowledge the fragmentation of the tourism sector and the resulting multidimensional qualitative data, and calls for a more open accounting of the data analysis process and the underlying research values in tourism studies.     

基于稀疏编码的TPM通信噪声抑制分析

基于独立成分分析（ICA）时域滤波的时相调制（TPM）通信系统中的噪声干扰对系统性能有很大的影响。采用稀疏编码方法对TPM通信中的噪声进行抑制。首先对观测信号采用稀疏编码方法进行稀疏编码,然后对处理后的信号使用压缩方法处理,从而将ICA过程中对噪声所代表的小的变元值变小或置零,最终达到对噪声的削弱。仿真表明,稀疏编码方法对TPM通信中的噪声确实有较好的抑制,与不采用所提方法相比,大约有1 dB的系统误码性能提高。     

浅谈视频变码流的转换编码

近年来,视频的编码技术和转码技术得到了快速的发展。文章介绍了码流的转换编码、图像编码、MPEG-4转换编码等最新技术,并对编码转换质量的控制提出了建议。     

基于三维分类法的旅游信息分类体系与编码初探

随着国民收入的增长、消费理念的转变以及闲暇时间的增多,旅游业飞速发展,逐渐成为国家战略性支柱产业,为其提供理论、技术、信息支撑的旅游信息科学呼之欲出。进行旅游信息分类体系与编码研究是旅游信息科学理论的重要研究内容,同时为旅游管理、规划决策、旅游信息平台搭建提供技术与信息支持。文章基于旅游三体、旅游六要素、需求层次、协同、可持续发展和信息组织六大理论,结合目前旅游业与相关产业融合发展态势,全面系统地提取了各类旅游信息;采用时间、空间、属性三维分类方法,建立了旅游信息三维立体分类模型,构建了旅游信息五级分类体系基本框架;应用“空间维＋时间维＋属性维”信息编码结构,确定了旅游信息编码的3段37位代码;通过陕西省旅游信息管理数据库系统的实践验证,旅游信息分类体系和编码系统性强,完整性高,操作便捷,可为旅游信息科学的理论研究及实践应用提供借鉴。     

Generational Perception and Satisfaction Differences Related to Restaurant Service Environment

ABSTRACT

The current study considers perception, satisfaction, and importance rating differences of aspects of the dining service environment in a casual-themed restaurant between members of three generations—baby boomers, Gen X, and millennials. The study also assesses the moderating role of generation on the relationship between satisfaction and repeat patronage intentions. Significant differences were found between generations related to satisfaction, importance ratings, and repeat patronage intentions regarding the overall dining service environment. The current study provides assessment of components of the DINESCAPE scale along with items from the DinEX scale related to social connectedness. Implications of the research are discussed.     

初游者与重游者的旅游特征差异分析——以广西大新县为例

针对初游者和重游者的旅游特征进行差异分析,这对于旅游目的地建设具有重意义。以在广西大新县进行问卷调查获得的数据为基础,对初游者和重游者的旅游特征差异进行细致分析,得出如下结论：初游者和重游者在信息渠道、交通方式、旅游消费体现出了“大趋同,小分异”特征;在旅游方式和停留时间呈现出较大的分异性;重游者的旅游满意度和忠诚度比初游者更高。     

Customers on the web are not all created equal: the moderating role of internet shopping experience

Consumers' previous shopping experience has been found to be an important influence on future shopping intentions. Prior internet shopping experience, however, has been largely overlooked as a moderator of attitudes and online-retail outcomes. Specifically, key influences on online retail buying behavior such as site reputation, advertising likeability, site security and hedonic and utilitarian shopping values can be expected to have differential effects on intentions to repatronize an e-commerce website based on the level of internet shopping experience by prospective buyers. This study proposes and tests an integrated model in which level of prior internet shopping experience is treated as a moderator of relationships among attitudinal variables and repatronage intentions with the variable attitude toward the site as a mediator of buying intentions. Findings are consistent with the proposed model with an interesting exception. Perceptions of site security were in the opposite direction of the model prediction. Managerial and theoretical implications are provided for consideration.