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81.
Christopher S. Tang Kairen Zhang Sean X. Zhou 《Production and Operations Management》2015,24(12):1945-1954
We examine two time‐related incentive project management contracts (C1 and C2 contracts) when the manager conducts a reverse auction. Under the C1 contract, the contractor with the lowest bid price wins; however, the manager imposes a linear and symmetric incentive/disincentive for early/late completion according to a pre‐specified due date. Under the C2 contract, the winning contractor has the lowest composite score that is based on the quoted price and the quoted due date; however, in addition to the linear and symmetric penalty/incentive, the contractor is subject to an additional penalty for late completion. While the C2 contract is more sophisticated than the C1 contract (in terms of the number of decisions that each party has to make), our analysis reveals that, unless the project is truly urgent, the more complicated C2 contract adds no value to the manager— the simple C1 contract will suffice. 相似文献
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83.
In many surveys, responses to earlier questions determine whether later questions are asked. The probability of an affirmative response to a given item is therefore nonzero only if the participant responded affirmatively to some set of logically prior items, known as "filter items." In such surveys, the usual conditional independence assumption of standard item response models fails. A weaker "partial independence" assumption may hold, however, if an individual's responses to different items are independent conditional on the item parameters, the individual's latent trait, and the participant's affirmative responses to each of a set of filter items. In this paper, we propose an item response model for such "partially independent" item response data. We model such item response patterns as a function of a person-specific latent trait and a set of item parameters. Our model can be seen as a generalized hybrid of a discrete-time hazard model and a Rasch model. The proposed procedure yields estimates of (1) person-specific, interval-scale measures of a latent trait (or traits), along with person-specific standard errors of measurement; (2) conditional and marginal item severities for each item in a protocol; (3) person-specific conditional and marginal probabilities of an affirmative response to each item in a protocol; and (4) item information and total survey information. In addition, we show here how to investigate and test alternative conceptions of the dimensionality of the latent trait(s) being measured. Finally, we compare our procedure with a simpler alternative approach to summarizing data of this type. 相似文献
84.
Web Survey Design: Paging versus Scrolling 总被引:1,自引:0,他引:1
Peytchev Andy; Couper Mick P.; McCabe Sean Esteban; Crawford Scott D. 《Public opinion quarterly》2006,70(4):596-607
A key choice in the design of Web surveys is whether to placethe survey questions in a multitude of short pages or in longscrollable pages. There are advantages and disadvantages ofeach approach, but little empirical evidence to guide the choice.In 2003 we conducted a survey of over 21,000 undergraduate students.Ten percent of the 10,000 respondents were directed to the scrollableversion of the survey, containing a single form for each ofthe major sections. The balance was assigned to the paging version,in which questions were presented to be visible without scrolling.The instrument contained a maximum of 268 possible questions,including topics that varied in sensitivity and desirability.The survey also permitted comparison of the effect of skip patternsby implementing skip instructions and hyperlinks in the scrollabledesign, and also recorded time at the end of each of the fivetopical sections. Differences between designs are evaluatedin terms of various forms of nonresponse, univariate and bivariatemeasurement properties, and proxies for respondent burden. 相似文献
85.
J. Sean McCleneghan 《The Social Science Journal》2006,43(3):445-451
This 2004 investigation of FM radio stations in seven southwestern states presents a snapshot of where radio news might be heading early in our new millennium. Radio is rarely the topic of discussion, giving it the dubious identity of the “forgotten medium.” Seven discrete variables in the form of YES|NO questions are formulated from a 1993 to 2004 literature review that takes into account the demise of radio news on the FM dial. An e-mail questionnaire was answered by management at N = 61 FM stations regarding newscasts in their daily programming. The picture for radio news on the FM dial is gloomy as budget cuts and consolidations impact the newsroom. 相似文献
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Empirical data, clinical observation, and theoretical rationales support use of enactments as a fundamental mechanism of change in relationship therapies. Yet beginning therapists may lack an adequate conceptual framework and operational training essential to effectively utilize enactments. Inadequate training may contribute to ineffective execution, and in turn to negative results, which could lead to abandonment of enactments. This study sought to identify proficiencies and nonproficiencies of beginning therapists in conducting enactments. Twenty beginning therapists from three Commission on Accreditation for Marriage and Family Therapy Education (COAMFTE)-accredited programs were briefly trained in an indirect therapy style that incorporates enactments. Twenty-six therapist enactments were coded using a comprehensive observational measure designed to assess proficiencies and nonproficiencies in executing enactment phases, component tasks, and subcomponent operations. Results suggest that beginning therapists struggle with numerous clinical operations conceptually linked to the successful engagement of relationships in marriage and family therapy. In light of these findings, specific recommendations for additional enactment training in COAMFTE-accredited programs are offered. 相似文献
88.
Sean E. Brotherson Joseph White Christina Masich 《Journal of divorce & remarriage》2013,54(8):465-490
The intent of this study was to examine the perceived value of a 4-hour divorce education program for adults offered in a Midwestern state. Parents Forever: Education for Families in Divorce Transition is a divorce education program directed toward educating adults about separation, divorce, and the effects on children. Participants included 342 adults who attended the class and responded to retrospective questionnaires assessing their perceived satisfaction, knowledge, and demographic status. Also, 32 legal and community professionals participated in the program and responded to questions designed to assess perceptions of program value. Both respondent groups reported high satisfaction levels and significant knowledge gains through the class experience. Implications of the findings for program support and brief divorce interventions are discussed. 相似文献
89.
This article offers a reading of Transylvania (2006) directed by Tony Gatlif. It makes evident Gypsy identity’s unconscious dynamics when it occupies the position of a fetish within the cinematic story and in the interaction of the viewer with the exotic images on the screen. This specific reading argues that Gypsy fetish signals and covers over a site of psychic pain for the protagonist as well as for the viewer. Our argument insists that as a fetish Gypsy identity props up the social order. In this sense Gypsy identity is not addressed as it often is as a symptom, or more specifically as a challenge to the social order, but instead the analysis renders it to be a concealment of the lack around which the symbolic network is articulated. The article further explores Gypsy identity’s music, magic, dirt, and freedom as its key characteristics which conserve a potential access to what was disavowed and covered over – a lost enjoyment. 相似文献
90.