Regularities and irregularities in a random 0,1 sequence

A few properties of the random 0,1 sequences are studied. These properties can be utilized to test the randomness of a 0,1 sequence produced by a computer (random generator). This test seems to be appropriate for discovering the periodicity (or the length of the period) of a pseudorandom sequence. A possible application of the presented results in regression analysis is also discussed.     

Managing Demand Uncertainty through Core Acquisition in Remanufacturing

We discuss the optimal raw material acquisition strategy for a third party remanufacturer (3PR). We specifically investigate whether a 3PR should acquire used products or cores in bulk with uncertain quality levels, or in sorted grades with known quality levels; and whether to acquire and remanufacture cores before the demand is realized (planned acquisition), or after the demand is realized (reactive acquisition), or on both occasions (sequential acquisition). When only sorted cores are acquired, we find that, (i) it is optimal to acquire cores in multiple grades to balance acquisition and remanufacturing costs; (ii) if reactive acquisition is possible, it reduces the assortment size (number of grades in which cores are acquired) and the total inventory acquired in the planned acquisition; and (iii) the optimal portfolio of grades to acquire and the optimal acquisition and remanufacturing quantities of these grades can be determined analytically. When bulk cores are acquired in addition to sorted cores, the property of reduction in assortment size of the planned acquisition is preserved. We also show that the 3PR should acquire only a fraction of the demand in planned acquisition, and leave the rest for reactive acquisition. This fraction changes during the lifecycle of a remanufactured product. Using a combination of empirical and realistic data from a smartphone remanufacturer we show that sequential acquisition increases expected profit by up to 8% and 27% over only planned and only reactive acquisitions respectively, and reduces the inventory acquired by up to 21% over only planned acquisition.     

Individual Differences in Women's Salivary Testosterone and Estradiol Following Sexual Activity in a Nonlaboratory Setting

Objectives: The current study evaluated women's salivary testosterone and estradiol levels before and after exposure to sexual stimuli in a U.S. sex club. Methods: Behavioral data and salivary samples were collected from 19 women during semistructured interviews. Results: Findings demonstrate substantial individual differences in the magnitude and direction of women's hormonal changes following sexual activity. Conclusions: In an age of individualized medicine, these findings highlight the need to better understand factors shaping variation in physiological responses to sexual activity. Findings contribute to a relatively small and contradictory literature on women's hormonal responses to sexual stimuli.     

Squaring Up: Experiences of Transition from Off‐Street Sex Work to Square Work and Duality—Concurrent Involvement in Both—in Vancouver,BC

Many studies of exit from sex work are inspired by role theory, where people experience a lack of attachment to a role; are faced with individual, interactional, and structural challenges; contemplate transition and exit a role; and then struggle to establish postrole identities and new lives. This framework has been used to explicate the factors and experiences of those who leave or attempt to leave the sex industry; however, it is limited because studies present sex work as a harmful and dangerous profession that people are trapped in, escaping, or have survived. In this paper, I discuss Vancouver's history of violence against sex workers and I review research on sex work exiting and bring forward recommendations for the design of exit program based on the experiences of 22 active and former off‐street sex workers from Vancouver, British Columbia. I describe study participants who include Sex‐Work‐No‐More participants who would not return to the industry, Sex‐Work‐Maybe participants who consider reinvolvement, and Dual‐Life participants who are employed in sex work and conventional work simultaneously. These participants uniquely challenge narrow, binary understandings of involvement and transition because they discuss their use of deception to obtain resources needed to make change; the support that clients have provided; their strategic engagement in sex work as a means to exit; their considerations of reentry; and for some, their dual employment. In light of new legislation that criminalizes activities related to sex work—the Protection of Communities and Exploited Persons Act—and the Federal government announcement of $20 million dollars for the creation of exit services nationwide, hearing from sex workers is essential to advancing agendas in this area. De nombreuses études de la sortie du travail du sexe sont inspirées par la théorie des rôles, où les gens éprouvent un manque d'attachement à un rôle; sont confrontés à des défis particuliers, interactionnelles et structurelles; contempler transition et quitter un rôle; et ensuite du mal à établir des identités post‐rôle et les nouvelles vies. Ce cadre a été utilisé pour expliquer les facteurs et les expériences de ceux qui quittent ou tentent de quitter l'industrie du sexe; Cependant, elle est limitée parce que le travail présente des études de sexe comme une profession nocive et dangereux que les gens sont piégés dedans, échapper ou ont survécu. Dans cet article, je discute de l'histoire de la violence contre les travailleurs du sexe de Vancouver et je passe en revue la recherche sur le travail du sexe sortant et de formuler des recommandations pour la conception d'un programme de sortie fondée dans les expériences de 22 travailleurs actifs et les anciens hors rue sexe de Vancouver CB Je décris les participants à l'étude qui incluent le travail du sexe‐No‐More participants qui ne reviendrait pas à l'industrie; Sex‐travail, peut‐être les participants qui considèrent réengagement; et les participants Dual‐vie qui sont employés dans le travail du sexe et le travail classique simultanément. Ces participants contestent unique, ententes binaires étroites de la participation et de la transition parce qu'ils discutent de leur recours à la tromperie pour obtenir les ressources nécessaires pour apporter des changements; le soutien que les clients ont fourni; leur engagement stratégique dans le travail du sexe comme un moyen de sortir; leurs considérations de rentrée; et pour certains, leur double emploi. À la lumière de la nouvelle législation qui criminalise les activités liées au sexe de travail ‐ Loi sur la protection des collectivités et des personnes victimes d'exploitation ‐ et l'annonce du gouvernement fédéral de 20 millions de dollars pour la création de services de sortie à l'échelle nationale, l'audition de travailleurs du sexe est essentielle pour programmes faisant la promotion dans ce domaine.     

Medicare and Medicaid Reimbursement Rates for Nursing Homes Motivate Select Culture Change Practices But Not Comprehensive Culture Change

Components of nursing home (NH) culture change include resident-centeredness, empowerment, and home likeness, but practices reflective of these components may be found in both traditional and “culture change” NHs. We use mixed methods to examine the presence of culture change practices in the context of an NH’s payer sources. Qualitative data show how higher pay from Medicare versus Medicaid influences implementation of select culture change practices, and quantitative data show NHs with higher proportions of Medicare residents have significantly higher (measured) environmental culture change implementation. Findings indicate that heightened coordination of Medicare and Medicaid could influence NH implementation of reform practices.     

A Faith‐Based Advantage?

This study explored whether religiously affiliated nonprofit schools participating in Milwaukee's long‐standing school voucher program engage in more fundraising and perform better on academic indicators than nonsectarian nonprofit schools. The analysis of three years of organizational‐level voucher school data reveals that a higher percentage of religious affiliated schools engage in fundraising, and that religious schools affiliated with umbrella organizations have higher test score indicators than nonsectarian schools. The author concludes that the religious advantage is likely in part a result of the broader access to networks and resources available to religious schools associated with umbrella organizations like a Catholic archdiocese or Lutheran synod. The results are relevant to policymakers who are considering implementing a reinvented government approach to the provision of public goods, as well as leaders of nonprofit corporations who seek to maximize performance.     

The LGBQ Social Climate Matters: Policies,Protests, and Placards and Psychological Well-Being Among LGBQ Emerging Adults

Sexual minority youth, including emerging adults, are at risk for negative health outcomes. Minority stress theory posits that heterosexism can contribute to these outcomes among sexual minorities. Researchers have tested this theory with respect to interpersonal heterosexism; however, little attention has been given to macro-level and environmental forms of heterosexism, especially among lesbian, gay, bisexual, and queer (LGBQ) youth. In this study, we examine the role of objective social climate (LGB state-level policies) and experiential distal and proximal environmental microaggressions on the psychological well-being of LGBQ emerging adults. Furthermore, we examine the role of LGBQ identity salience as a moderating factor on the macro/environmental-heterosexism and well-being relationship. Multivariable linear regression results suggest that living in a state without same-sex marriage laws is associated with greater self-esteem, whereas both distal and proximal environmental microaggressions are risk factors for anxiety and perceived stress. Furthermore, identity salience can ameliorate the effects of distal microaggressions and intensify the effects of proximal microaggressions and same-sex marriage legislation. Implications for practice with sexual minority youth are discussed.     

Handling Missing Values in Longitudinal Panel Data With Multiple Imputation

This article offers an applied review of key issues and methods for the analysis of longitudinal panel data in the presence of missing values. The authors consider the unique challenges associated with attrition (survey dropout), incomplete repeated measures, and unknown observations of time. Using simulated data based on 4 waves of the Marital Instability Over the Life Course Study (n = 2,034), they applied a fixed effect regression model and an event‐history analysis with time‐varying covariates. They then compared results for analyses with nonimputed missing data and with imputed data both in long and in wide structures. Imputation produced improved estimates in the event‐history analysis but only modest improvements in the estimates and standard errors of the fixed effects analysis. Factors responsible for differences in the value of imputation are examined, and recommendations for handling missing values in panel data are presented.