The School Success Profile Online

SUMMARY

This article provides an overview of the purposes, development, and implementation of the School Success Profile Online (SSP)–a computerized, self-report survey for middle and high school students. The SSP takes advantage of World Wide Web technology and the increasing access of public schools to computers and the Internet to assess students' perceptions of their neighborhoods, schools, peers, and families, as well as their own psychological and physical health and school performance. The individual and group profiles generated by the SSP can help school social workers identify areas of concern, plan their interventions with students, and evaluate the impact of their efforts at the end of interventions.     

角色变异：网络传播挑战“把关人”权利

20世纪末期兴起的网络传播,使大众传播的“把关人”权利受到严峻挑战。“把关人”已由传统的单向传播与控制信息向多元角色转换,成为集传播与接受、调整与变革为一体的新型网络信息调控。网络传播“把关人”的角色定位,是21世纪新闻传播需要研究的重要课题。     

Kumulation von Mikrodaten – Konzeptionelle Grundlagen und ein Vorschlag zur Realisierung

Zusammenfassung: In dieser Studie wird ein Konzept zur Kumulation von laufenden Haushaltsbudgetbefragungen im Rahmen des Projektes Amtliche Statistik und sozioökonomische Fragestellungen entwickelt und zur Diskussion gestellt. Dafür werden die theoretischen Grundlagen und Bausteine gelegt und die zentrale Aufgabe einer strukturellen demographischen Gewichtung mit einem Hochrechnungs–/Kalibrierungsansatz auf informationstheoretischer Basis gelöst.Vor dem Hintergrund der Wirtschaftsrechnungen des Statistischen Bundesamtes (Lfd. Wirtschaftsrechnungen und EVS) wird darauf aufbauend ein konkretes Konzept für die Kumulation von jährlichen Haushaltsbudgetbefragungen vorgeschlagen. Damit kann das Ziel einer Kumulation von Querschnitten mit einer umfassenderen Kumulationsstichprobe für tief gegliederte Analysen erreicht werden. Folgen sollen die Simulationsrechnungen zur Evaluation des Konzepts.

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Summary: In this study a concept for cumulating periodic household surveys within the frame of the project Official Statistics and Socio–Economic Questions is developed and asks for discussion. We develop the theoretical background and solve the central task of a structural demographic weighting/calibration based on an information theoretical approach.Based on the household budget surveys of the Federal Statistical Office (Periodic Household Budget Surveys and Income and Consumption Sample (EVS)) a practical concept is proposed to cumulate yearly household surveys. This allows a cumulation of cross–sections by a comprehensive cumulated sample for deeply structured analyses. In a following study this concept shall be evaluated.

     

网购环境下在线零售商的退货运费承担策略研究

在电子商务环境下，宽松的退货政策能够刺激需求，促进货品销量的增长，但与此同时也导致了退货量的增多。在面临高退货，特别是无缺陷退货不断攀升的挑战下，在线商家应如何制定合理的退货策略成为值得研究的一个问题。本文主要针对退货运费承担问题，重点比较消费者承担退货运费、商家承担退货运费、双方共同承担退货运费三种策略，探讨不同策略下在线零售商的最优定价及其盈利能力。研究结果表明：为实现利润最大化，在线零售商应根据商品的无缺陷退货比例特征选择相应的策略。具体而言，当商品的无缺陷退货比例较低时，宜采用消费者承担退货运费策略；当无缺陷退货比例高时，宜采用商家承担退货运费策略；当无缺陷退货比例居中时，宜采用共同承担退货运费策略。值得注意的是，退货政策的目的是为了刺激需求的增长，但有时退货政策对需求的促进作用不够理想，不能抵消退货的负面影响，那么这种情况下则无论无缺陷退货占比如何，在线零售商的最佳退货策略只能是让消费者承担退货运费，以此避免更多非理性退货行为的发生。     

考虑线下权力结构的制造商线上销售模式选择研究

在线下垂直实力对等、制造商主导和实体店主导三种渠道权力结构下，构建制造商、实体店和电商之间的博弈模型，探讨线下渠道权力结构与制造商线上销售模式的匹配关系。研究结果表明：（1）当电商要求的佣金比例较小时，在不同的线下渠道权力结构下，制造商都应该选择线上代销模式；而当电商要求的佣金比例较大时，在线下垂直实力对等结构下，制造商应该选择线上转销模式，而在制造商主导和实体店主导结构下，制造商应该选择线上代销模式。（2）当制造商选择线上转销模式时，在线下制造商主导的结构下，制造商给予实体店的批发价格最大，在垂直实力对等结构下次之，在实体店主导结构下最小。然而，线下渠道权力结构的差异并不会影响制造商给予电商的批发价格。（3）当制造商选择线上代销模式时，在线下制造商主导结构下，线下销售价格最高；在线下垂直实力对等结构下，线上销售价格最高。     

购物网站的个性化推荐对网络购物体验影响的实证研究

结合网络购物体验和个性化推荐的相关理论，对个性化推荐、网络购物体验、隐私关注之间的关系进行实证研究。通过设计不同的场景和采用问卷调查法收集数据，运用SPSS软件对数据进行多元线性回归分析对研究的问题进行验证和探讨。实证分析结果表明，购物网站推荐的个性化程度与消费者的网络购物体验之间存在正向作用关系，消费者的隐私关注在其中发挥调节作用。     

Conducting Large‐Scale Surveys in Secondary Schools: The Case of the Youth On Religion (YOR) Project

There are few published articles on conducting large‐scale surveys in secondary schools, and this paper seeks to fill this gap. Drawing on the experiences of the Youth On Religion project, it discusses the politics of gaining access to these schools and the considerations leading to the adoption and administration of an online survey. It is concluded that successful research in schools has to be planned carefully in collaboration with key members of staff, and justified as an educational activity. Providing speedy feedback was helpful to ensure schools benefited from the research and to keep them engaged with the project. © 2011 The Author(s). Children & Society © 2011 National Children’s Bureau and Blackwell Publishing Limited     

Birds of a feather petition together? Characterizing e-petitioning through the lens of platform data

E-petitioning platforms are increasingly popular in Western democracies and considered by some lawmakers and scholars to enhance citizen participation in political decision-making. In addition to social media and other channels for informal political communication, online petitioning is regarded as both a useful instrument to afford citizens a more important role in the political process and allow them to express support for issues which they find relevant. Building on existing pre-internet systems, e-petitioning websites are increasingly implemented to make it easier and faster to set up and sign petitions. However, little attention has so far been given to the relationship between different styles of usage and the causes supported by different groups of users. The functional difference between signing paper-based petitions vs. doing so online is especially notable with regard to users who sign large numbers of petitions. To characterize this relationship, we examine the intensity of user participation in the German Bundestag’s online petitioning platform through the lens of platform data collected over a period of five years, and conduct an analysis of highly active users and their political preferences. We find that users who sign just a single petition favor different policy areas than those who sign many petitions on a variety of issues. We conclude our analysis with observations on the potential of behavioral data for assessing the dynamics of online participation, and suggest that quantity (the number of signed petitions) and quality (favored policy areas) need more systematic joint assessment.     

The Effects of the Facial Expression of Beneficiaries in Charity Appeals and Psychological Involvement on Donation Intentions

To increase the effectiveness of fundraising campaigns, many human‐need charities include pictures of beneficiaries in their ads. However, it is unclear when and why the facial expression of these beneficiaries (sad versus happy) may influence the effectiveness of charity ads. To answer these questions, an experiment was conducted to investigate the effect of the facial expression on donation intentions, while considering the moderating role of psychological involvement with charities. It found that psychological involvement with charities moderated the impact of the facial expression on donation intentions in that seeing a picture of a sad versus happy person increased intentions to give among participants with lower levels of psychological involvement, whereas the reverse was true for highly involved participants. The moderating effect of psychological involvement was fully explained by the perceived efficacy of one's donation. The findings not only contribute to our understanding of the effect of the facial expression of people pictured in charity appeals on donation behavior, but also suggest that nonprofits should tailor their ads to target potential donors with various levels of psychological involvement with charities.     

Hazards regression for freemium products and services: a competing risks approach

We propose a competing risks approach to analyse customer behaviours in freemium products and services. The event of interest is when a customer starts to pay for additional features or functionalities. The observation of such an event may be preempted by an event where the customer quits using the product before paying and consuming the additional features or functionalities. One such freemium service is the online game category. The Fine-Gray regression model was implemented for an online game player activity data to study how covariates affect the paying hazard. Some covariates are hypothesized to have different discrete effects at multiple change points. We extend the model to allow for possible change points in the analysis.