Police evaluation research: an experimental and cost-benefit analysis of a helicopter patrol in a high crime area

The significance of a helicopter patrol procedure directed toward prevention of home burglaries was evaluated from experimental and cost-benefit perspectives. The helicopter patrolled one city zone from 9 a.m. to 5 p.m. for two 12-day periods. Each 12-day period was separated by a baseline period in which only normal patrol-car levels were maintained. Significantly reduced burglary levels during the intervention periods, compared to baseline periods, documented the experimental significance of the helicopter procedure. The cash costs of implementing the patrol procedure were compared to two estimates of the resulting cash benefits. This latter cost-benefit analysis was supplemented by a discussion of the intangible costs and benefits of the helicopter procedure. Taken together, these analyses documented that the marginal costs of the helicopter intervention were exceeded by all estimates of benefits.     

Influence of following vehicle’s tailway and classification on subject driver’s response to the circular yellow indication

Traffic crashes at signalized intersections are frequently linked to driver behavior at the onset of the circular yellow (CY) indication. To better understand behavioral factors that influence a driver’s decision to stop or go at an intersection, this study analyzed the behavior of the driver of a subject vehicle at the onset of the CY indication. Driver performance data from 53 participants were collected in the Oregon State University Driving Simulator, simulating scenarios of driving through high-speed intersections under various conditions. Data included interactions where the driver stopped at the stop line (n = 644) or proceeded through the intersection (n = 628) in response to a CY indication. Data were analyzed as panel data while considering 12 indicator variables related to the driver’s stop/go decision. These indicator variables included time to stop line (TTSL), tailway time, following vehicle type, vehicle speed at the onset of the CY indication, and demographics (age, gender, driving experience, level of education, personal vehicle type, number of times driving per week, number of miles driving last year, participation in previous simulation studies. A random-parameter binary logit model was used to determine contributing factors for driver decision making at the onset of CY indication while accounting for unobserved heterogeneity. Four indicator variables were significantly related to the driver’s stop/go decision, but three factors varied across observations. Findings showed that a driver’s stop/go decision in response to a CY indication was associated with the time to the stop line (TTSL), tailway time to the following vehicle, subject vehicle speed at the onset of the CY indication, and driver’s age (20–36 years), but was not significantly associated with classification of the following vehicle. Also, the findings indicated that a shorter tailway increased a subject driver’s red-light running frequency. These findings provide insights into variables that affect driver decisions in a vehicle-following situation at the onset of the CY indication. This information can help make better decisions in smart traffic control systems such as to extend/decrease the green interval slightly to avoid decisions that are more difficult.     

Analysis of driver’s decision distance and merging distance in work zone area based on parametric survival models: With the aid of a driving simulator experiment

Work zones affect traffic safety and efficiency by changing the road condition and drivers’ maneuver. Therefore, it is important to fully understand drivers’ merging behavior in work zone related areas. In this study, a model framework composed of decision-distance analysis and merging-distance analysis was proposed, which could describe both decision-making and lane-changing process of merging behavior. A road environment with work zone was developed based on a driving simulator, and six scenarios composed of two levels of traffic volume and three different lane-end sign’s locations were designed. Forty-two licensed participants, including 21 females (10 professional drivers vs. 11 normal drivers) and 21 males (15 professional drivers vs. 6 normal drivers) finally completed the experiment. Based on the experimental data, parametric survival models were established to analyze the effects of traffic sign location, traffic situation and driver characteristics on drivers’ decision distance and merging distance. The results showed that: (i) the lane-end sign’s location affected the decision point of lane changing and further affected the merging distance. However, the effect was weakened when the sign was placed far away from the work zone; (ii) merging distance in high traffic volume condition was shorter than that in low traffic volume condition; (iii) work zone posed greater challenges for female drivers as they merged later than males, and females were reluctant to adjust their merging distance according to different gap conditions. The findings shed some light on the future improvement of traffic design and management in work zones.     

Studies of Work: Achieving Hybrid Disciplines in IT Design and Management Studies

We explore the relationship between ethnomethodology (EM), ethnography and the needs of managers and designers in industry, considering both ethnomethodological and industrial criteria of adequacy and explicating their relationship through the concept of “audience.” We examine a range of studies in this light, with a view to their possible candidacy as hybrid studies and identify three types of application of EM studies of work: market research, design, and business improvement. Application in the first of these fields we dub “anthropological,” in that it consists in studying and reporting back on the ways of exotic people (customers). This is the application most commonly found in studies of computer supported co-operative work (CSCW). A second CSCW application, “technomethodology,” involves the introduction of EM concepts into the design process. A further application, dubbed “holding-up-a-mirror,” involves reporting back to members of a setting upon their own activities. We argue that technomethodology and holding-up-a-mirror both offer the possibility of creating hybrid disciplines. We consider the objection that improvement and design involve the introduction of value judgements that threaten the practice of EM indifference, arguing that action research can serve as a guarantee of unique adequacy (UA) by testing the researcher’s understanding as analysis in action in the setting. Furthermore, the standard of reporting required by the UA criterion contributes to the effectiveness of proposed solutions.     

A Fuzzy Goal Programming Formulation with Multiple Target Levels

The essential activity of a manager is decision making, which is becoming more and more complex, mainly in the multi‐criteria problems. Multi‐choice goal programming (MCGP) is considered as a robust tool in operational research to solve this type of problem. However, in real world problems, determining precise targets for the goals is a difficult task. To deal with such situation, Tabrizi introduced and used in 2012 the concept of membership functions in the MCGP model in order to model the targets fuzziness of each goal. In their model, they considered just only one type of functions (triangular form), which does not reflect adequately the decision maker's preferences that are considered as an essential element for modelling the goal's fuzziness. Their model is called Fuzzy MCGP. In this paper, new ideas are presented to reformulate MCGP model to tackle all types of functions by introducing the (decision maker's) preferences. The concept of indifference thresholds is used in the new formulation for characterizing the imprecision and the preferences associated with all types of the goals. The proposed formulation provides useful insight about the solution of a new class of problems. A numerical example is given to demonstrate the validity and strength of the new formulation. Copyright © 2013 John Wiley & Sons, Ltd.     

The indifferent

This article presents a portrait of indifference, a psychosocial analysis of middle class bystanding of social suffering. It arises as a way to tell a research story of colonially produced racism, classism, and denial. Together, these ways of being produce a mode of perception that denies reality, an active erasure that makes the indifferent apathetic. It is based on research in postcolonial Jamaica, yet some of its features can be recognized elsewhere, where bystanders bury their witness, their insight, concealing their understanding of other’s pain. Because this portrait is based on what male and female research participants said, “he/she” are used interchangeably throughout the portrait.     

Psychoanalytic reflections on global warming and its relation to human omnipotence and ethical responsibility

Abstract

Global warming – reality or fantasy? Certainly, global warming is a dystopia linked to other catastrophes in human history, such as the Flood and Noah's Ark. Noah's belief in God saved his life and the life of his family. In our time, we need to sustain our belief in the human capacity to cooperate and survive. This is a necessary background when thinking of the future and analysing the border between fantasy and reality, between fear and paranoia, and in the process in which a new worldview takes form.     

今本《周易》卦序排列数学规律新探

今本《周易》六十四卦卦序是依据什么道理排列出来的,迄今仍然没有一个完美的解答。本文尝试把卦序问题作为一个数学问题去考虑,探讨卦序的制作者所依据的数学思想与技巧。《六十四卦错综图》是我们研究序卦最重要的参考图,并指出十对三明三阳卦在序卦排列中起着骨架作用．无论是十对三明三阳卦,还是围绕这十对卦左右的其它卦,其排列在序数配置、卦区划分和爻画布排等诸多方面都蕴含着丰富的数学内容,充分反映了序卦的制作者运用数学技巧的娴熟技艺和精妙构想。     

维果茨基心理学理论述评

维果茨基是苏联早期一位才华横溢的杰出心理学家,社会文化历史学派的创始人。近年来国际上出现的维果茨基研究热,充分显示了维果茨基心理学思想对现代心理科学的重要的现实意义。维果茨基的心理学理论异常丰富,主要包括活动理论、工具理论、思维和言语理论、教学和发展理论、心理学方法论等。维果茨基心理学理论是对意识的文化历史决定的研究的重要贡献,其理论不足之处主要带有抽象社会观点的色彩等。     

The cognitive antecedents and motivational consequences of the feeling of being in the zone

The feeling of being in the zone (related to “flow”) is marked by an elevated yet effortless sense of concentration. Prior research suggests that feelings of being in the zone are strongest when the demand posed by a task matches one’s level of ability (i.e., the balance hypothesis). In the present article, we tested this hypothesis using a novel experimental paradigm. By collecting numerous zone judgments for each participant, we were able to examine intra-individual sources of variance that explain why people often feel more or less in-the-zone on the same task from one moment to the next. The results of two experiments provide support for what we have termed the balance-plus hypothesis, which posits that zone experiences are strongest (Experiments 1–2) and have the greatest motivational force (Experiment 2) when the balance between task demand and ability is accompanied by positive assessments of one’s own performance.