LYING ABOUT WHAT YOU KNOW OR ABOUT WHAT YOU DO?

We compare communication about private information to communication about actions in a one‐shot 2‐person public good game with private information. The informed player, who knows the exact return from contributing and whose contribution is unobserved, can send a message about the return or her contribution. Theoretically, messages can elicit the uninformed player's contribution, and allow the informed player to free‐ride. The exact language used is not expected to matter. Experimentally, however, we find that free‐ride depends on the language: the informed player free‐rides less—and thereby lies less frequently—when she talks about her contribution than when she talks about the return. Further experimental evidence indicates that it is the promise component in messages about the contribution that leads to less free‐ride and less lying.     

Increasing the Revenue of Self‐Storage Warehouses by Facility Design

Self‐storage is a booming industry. Both private customers and companies can rent temporary space from such facilities. The design of self‐storage warehouses differs from other facility designs in its focus on revenue maximization. A major question is how to design self‐storage facilities to fit market segments and accommodate volatile demand to maximize revenue. Customers that cannot be accommodated with a space size of their choice can be either rejected or upscaled to a larger space. Based on data of 54 warehouses in America, Europe, and Asia, we propose a new facility design approach with models for three different cases: an overflow customer rejection model and two models with customer upscale possibilities, one with reservation and another without reservation. We solve the models for several real warehouse cases, and our results show that the existing self‐storage warehouses can be redesigned to generate larger revenues for all cases. Finally, we show that the upscaling policy without reservation generally outperforms the upscaling policy with reservation.     

Editorial collaborators

Editorial collaborators     

The school experience of children in residential care: A multiple case study

Children in residential care are the out‐of‐home population group with the lowest rate of access to postsecondary education. Research aimed at understanding their situation within the school context suggests that besides learning progress and outcomes, subjective experiences should be taken into account. Qualitative research based on a multiple‐case study was designed and carried out in Spain with the aim of deepening the understanding of the individual school experiences of three children in residential care. Each case was analysed from the perspective of the child, the educators and the teachers. Semistructured, one‐to‐one interviews were carried out, and children's files were consulted. The results pointed to emotional distress and accumulated educational delay as common traits of the three children in the study. In shaping each particular school experience, the key themes identified included (1) individual characteristics, (2) the children's academic aspirations and strategies, (3) relationships with peers and teachers, (4) response experienced in school, (5) the complex structure of the residential centre, (6) the sense of belonging to the residential centre, (7) team work and (8) political action and investment in inclusive education.     

Three models of collaborative child protection: what is their influence on short stays in foster care?

The paper articulates three models of collaboration between child protection services and law enforcement agencies on investigations of child maltreatment, and examines the relative impact of each model on child removals and short‐term foster care placements. An extensive review of the research literature is used to derive lessons for jurisdictions using the different models. Promising strategies from several jurisdictions are described as they relate to collaborative investigations, child removal and short‐term placements. Finally, we provide recommendations to improve child protection investigations and reduce the use of short‐term foster care placements.     

Texas college students' opinions of no-smoking policies, secondhand smoke, and smoking in public places

Abstract. The authors examined college student opinions of no-smoking policies, secondhand smoke, and smoking in public places. A convenience sample of 1,188 (66.4% female; 26.9% White, 64.1% Black, and 9.0% Hispanic) students attending 5 Texas colleges volunteered to complete a 60-item anonymous survey on tobacco attitudes and behaviors. Results of our study showed that women, Black students, and nonsmoking students reported the most favorable attitudes toward no smoking. Male students, white students, and students who smoked in the past 30 days (current smokers) reported the least favorable attitudes. The lowest level of agreement by all subgroups was provided for prohibiting smoking everywhere on campus (inside and outside of buildings). Implications for tobacco control on college campuses are discussed.     

A Lusin theorem for a class of Choquet capacities

We extend the Lusin Theorem to supermodular Dempster capacities. Received: July 2000; revised version: May 2001     

氮供给对中度水分胁迫的番茄植株渗透调节的影响

对造成水分亏缺的沙土盆栽的番茄植株 (Lycopersionexcalentum Mill)设置了 3种施氮水平 ,研究其对渗透调节的影响。采用每日滴灌的方式 ,使植株保持在田间持水量水平的土壤中 ,直至胁迫发生。每处理灌溉量为 1 0 0ml,氮 0 (N0 )处理为荷格兰特 (Hoagland)培养液 ;氮 1(N1 )处理为Hoagland培养液加 60mmolNO-3 ;氮 2 (N2 )处理 :为Hoagland培养液加 1 1 0mmolNO-3 。停止灌溉 3d后 ,叶片渗透调节百分率 (叶片实际渗透势占供水良好状态下叶片渗透势的百分数 )分别为N0植株 44%,N1植株 63%,N2植株 2 9%。停止供水 8d后的百分率与之相似。在停止供水 3d后 ,对一些植株恢复每天灌溉。当胁迫解除结束时 (灌溉 8d后 ) ,叶片渗透势较低 ( - 1 .8MPa) ,在Nl中仍保持着渗透调节的状态 ( 39%) ,这与水势降低的情况下 ,膨压的保持有关。结果表明 ,N1处理可能具有增强番茄植株避脱水性和耐脱性的效应     

Back to Basics

Nonprofits are under increased accountability pressures to demonstrate their effectiveness. Output measurement (how much is produced) is disregarded as simplistic. Emphasis is made instead on measuring outcomes (changes in the lives of beneficiaries) or impacts (effects developed relative to the mission of the nonprofit, or the overall public good), and a growing portion of organizations state that they measure these effects. However, we question the assumption that outputs such as the number of beneficiaries served are being adequately measured. We first review existing research gaps on results measurement practices and discuss the main types of obstacles to the quality and utility of evaluation data. In this context, we argue for the need to reground nonprofit evaluation in the profound knowledge available about beneficiary populations. We discuss the potential and limitations of reach, a basic output indicator that is defined as the number of individuals directly affected by a nonprofit, and explore the organizational drivers of reach measurement. Evidence from 2,229 nonprofits shows they still lack adequate data on the beneficiaries they serve, face relevant conceptual and practical hurdles when trying to identify them, and are significantly influenced by organizational factors in their capacity to track them. Our research not only shows that nonprofits fail to adequately measure outputs, but also that measuring the number of beneficiaries served and how they are served is not as straightforward as outcome and impact advocates suggest. Practitioners and funders are reminded of the need to place beneficiaries at the core of their evaluation efforts.