Using paradata to collect better survey data: Evidence from a household survey in Tanzania

Data are a key component in the design, implementation, and evaluation of economic and social policies. Monitoring data quality is an essential part of any serious, large‐scale data collection process. The purpose of this article is to show how paradata should be used before, during, and after data collection to monitor and improve data quality. To do this we use timestamps, global positioning system (GPS) coordinates, and other paradata collected from an 800‐household survey conducted in Tanzania in 2016. We demonstrate how key paradata can be used during each phase of a research project to identify and prevent issues in the data and the methods used to collect it. Our results corroborate the importance of collecting and analyzing paradata to monitor fieldwork and ensuring data quality for micro data collection in developing countries. Based on these findings we also make recommendations as to how researchers can make better use of paradata in the future to manage and improve data quality. We argue for an expansion in the understanding and use of varied paradata among researchers, and a greater focus on its use for improving data quality.     

基于LBPH算法的人脸识别算法研究与设计

人脸识别技术是一种根据人脸的特征信息进行身份判定的技术,此技术经过几十年的发展,由弱人工智能向强人工智能转化,论文提出了一种Python语言利用LBPH算法提取人脸特征、实现人脸识别的方法。     

深度学习技术在海关风险甄别中的应用研究

随着互联网的高速发展和人工智能时代的到来,越来越多从前必须由人脑完成的工作能够利用计算机技术来完成,而深度学习的出现更解决了传统机器学习算法在计算机视觉领域、自然语言处理领域表现不佳的问题,使机器也能够拥有准确感知图像和语音的能力。人脸识别是深度学习网络最常见的应用场景之一,具有自然、直接、方便的特点,且不需要检测对象配合,因此非常适合用于公共安全领域的风险检测。研究充分结合海关实际需求,搭建基于深度学习技术的人脸识别模型,提供对通关旅客进行实时风险甄别的解决方案,以及海关通关风险防控场景的理论参考,为后续深度学习技术在海关业务的研究提供支撑。     

产品生命周期的研究

产品生命周期是指一代产品进入市场后需求存续变化的周期,而不是指需求量、销量波动变化的周期。我们应当研究细分市场的产品生命周期,根据市场某种特性质变的界面来划分产品生命周期的阶段,才更具有营销意义。现行流行的划分产品周期阶段的四种方法。缺乏理论依据,在应用中有较大的随意性。为此,提出了综合判断法,根据多个判据的组合,定位了产品生命周期阶段之间的界面,并提出了对应的营销策略。     

浅析软煤层中顶层综采工作面回采初期技术管理

目前正处于煤炭行业的寒潮时期,各地煤炭企业亏损严重。为了响应国家的安全生产方针,煤炭企业在该时期生产过程中安全方面更不敢出一丝的问题。由于综采工艺相比其他采煤工艺而言大大提高了施工人员的安全系数。所以,综采工艺往往是工作面回采的首选。河南能源化工集团焦煤公司中马村矿同样采用了综采工艺对211021工作面进行回采。211021综采工作面为顶层工作面,并且所采煤层煤质较软,初采初放期间遇到了三条断层。下面就211021综采工作面回采初期的技术管理进行简要的分析总结。     

大倾角综采工作面撤除工艺优化与应用

大倾角综采工作面设备快速撤除一直是煤矿生产的技术难题。本文针对刘庄煤矿121106俯采工作面撤除难题,通过合理优化工作面设备撤除整体路线以及撤除施工工艺,实现了工作面设备的安全快速撤除。     

How does face influence the purchase of imitative new products? Moderating roles of product design characteristics

Face plays a profound role in consumption, but the question of how it impacts the purchase of imitative new products remains unanswered in the current literature. Imitative new products, which are legitimate innovations bearing similarities to existing products, are prevalent in many markets. This study investigates how two dimensions of face consciousness—the desire to gain face and the fear of losing face—influence consumers' purchase intentions regarding imitative new products by considering three product design characteristics (new product imitation locus, new product imitation scope, and product hedonism) as boundary conditions. We find through experiments carried out with adult Chinese consumers that the desire to gain face strengthens, but the fear of losing face weakens purchase intention. Moreover, the positive effects of the desire to gain face are weakened by imitation locus (form vs. function imitation) but enhanced by imitation scope (either form or function imitation vs. both form and function imitation); whereas the negative effects of the fear of losing face are strengthened by imitation locus but weakened by imitation scope. Product hedonism enhances the positive effects of the desire to gain face and augments the negative effects of the fear of losing face. This study thus contributes to the face literature by differentiating the roles of two dimensions of face consciousness in affecting consumption of imitative new products. In addition, this study contributes two important constructs—new product imitation locus and new product imitation scope—to the literature on imitative new products.     

How does social distance impact customers’ complaint intentions? A cross-cultural examination

This study examines the impact of social distance between focal customers and other customers (in-group versus out-group) on complaint intentions in a cross-cultural (i.e., collectivist Chinese versus individualist American) context. Results from a between-subjects quasi-experiment suggest that social distance moderates complaint intentions across the two cultural groups. When dining out with their families (i.e., in the presence of in-group members), American customers (versus Chinese) are more likely to voice complaints about service failures. However, in the presence of strangers (i.e., out-group members), complaint intentions are uniformly high for both American and Chinese participants. Moreover, concern for face (CFF) is the underlying mechanism explaining customers’ reactions to service failures. Specifically, when service failures are observed by strangers, CFF mediates the impact of culture on complaint intentions while the role of culture is more salient in the presence of family members.     

综放工作面动态分次加架技术实践

针对一些不规则布置的综放工作面,介绍了当工作面长度变长时,采取不同的布置及加架方式的优缺点。这对于一些储量较少,地质条件复杂的矿井具有很好的借鉴意义。     

The Antecedents and Consequences of Travelers' Need for Uniqueness: An Empirical Study of Restaurant Experiences

Dining out at a restaurant is one of the most important parts of travelers' tourism experience. The purpose of this research was to examine the antecedents and consequences of travelers' need for uniqueness (CNFU) in their restaurant experiences. Based on a literature review, three theoretical antecedents (perceived firm innovativeness (PFI), perceived firm uniqueness, and brand prestige) and three theoretical consequences (utilitarian value, hedonic value, and behavioral intentions) were proposed. During this process, it was theorized that consumers' uniqueness-seeking behaviors can be strengthened and/or weakened by three psychological moderators: attention to social comparison information (ATSCI), face consciousness, and materialism. By integrating the theoretical arguments, a structural model was proposed. The proposed model was tested using data collected from 379 travelers who had dined out at a luxury restaurant in the past three months. According to the data analysis results, PFI, perceived firm uniqueness, and brand prestige were all confirmed to be important factors in enhancing CNFU. Furthermore, it was determined that CNFU bears a positive impact on behavioral intentions, an impact that is mediated by perceived value. Lastly, the moderating roles of ATSCI and materialism were found to be significant. In the latter part of this research, managerial implications derived from the data analysis results are discussed.