AN OPTIMAL MIDDLEMAN FIRM PRICE ADJUSTMENT POLICY: THE "SHORT-RUN INVENTORY-BASED PRICING POLICY"

This paper examines the optimum pricing policies of middleman firms who carry an inventory of goods bought for resale. Each period the firm in the theoretical model is required to post a price before it observes its realized demand. In disequilibrium situations, the firm's profit-maximizing pricing policy is shown to be a "short-run inventory-based pricing policy" which requires the firm to post a price below the long-run equilibrium price upon observing its actual beginning inventory level above its optimum level, and to post a price above the long-run equilibrium price upon observing its actual inventory level below its optimum level. The final section suggests that the use of such policies by middleman firms will lead to market price adjustments which are both consistent with the "law of supply and demand" and which are based on explicit maximizing behavor.     

Are nonprofit density and nonprofit expenditures related to youth deviance?

This study explores whether neighborhoods with greater nonprofit density (nonprofits per mile) and/or larger nonprofit expenditures (nonprofit expenditures per 10,000 people) interact with social control to experience lower levels of adolescent deviancy. Data include cross-sectional surveys of 1541 youth. The data are analyzed using Hierarchical Linear Modeling (HLM). The dependent variable is a measure of deviance that is the sum of ten items, which assess deviant behaviors. For analysis the square root of this measure is used to adjust for negatively skewed data. The sample was drawn through a two stage-geostatistical sampling procedure, with the final sample including 50 zip codes throughout California. The study finds that adolescents' deviance is not associated with an interaction between social control and either nonprofit density or nonprofit expenditures. However, the analysis found strong positive associations between being male, being older, having higher levels of mean social control and the square root of deviance.     

Identifying Family Factors That Predict Children's Adjustment to Divorce

In order to provide a means for identifying children at risk for socio-emotional dysfunctions, an inventory was developed based on a systemic analysis of factors influencing their divorce adjustment. A conceptual model resulted from a thorough review revealing five general sources of variation with regard to children's post-divorce adjustments. Items were empirically developed and analyzed in each of the five conceptual areas. Items that discriminated between well and poorly adjusted children as well as "well" and dysfunctional families were retained for the inventory. The study involved a factor analysis of the selected items to test the original model and produced four general factors related to children's divorce adjustment.     

A DSM-5-Based Online Mental Health Referral Inventory: A Large-Scale Validation Study

In 2007, a comprehensive mental health referral inventory based on the 4th edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) was posted online as an alternative to the informal tests the public now uses to self-diagnose mental health problems. A validation study was published in 2011 (Epstein &; Muzzatti, 2011 Epstein, R., &; Muzzatti, L. (2011). Preliminary validation of an online DSM-based mental health referral inventory. Journal of Technology in Human Services, 29, 284–295. doi:10.1080/15228835.2011.638421[Taylor &; Francis Online] , [Google Scholar]). In 2013, a revision of that inventory that was consistent with the DSM-5 was posted. The present study evaluates the new inventory with a diverse sample of 201,625 people from 184 countries (mainly the United States, Canada, and the United Kingdom). The 63-item inventory screens for 21 common problems and typically takes about 5?min to complete. Test scores proved to be good predictors of a variety of self-reported criterion measures, including happiness, personal and professional success, history of hospitalization, history of therapy, current participation in therapy, and employment. Females were found to have slightly more mental health problems than males, and effects were also found for education and race/ethnicity. The revised test is more accessible than the original, reducing the reading level from grade 10.2 to 6.6. It is not designed to diagnose; rather, its primary purpose is to refer people to mental health professionals for further evaluation. It can also be used in clinical settings for quick screening purposes.     

Validity of Person Matching in Vocational Interest Inventories

Research for more than 60 years has shown that entry into occupations can be predicted from scores on interest inventories at a rate better than chance (Donnay, 1997 ). The psychometric scoring methodologies used today by a majority of vocational interest inventories were developed in the 1920s and 1960s. Researchers are challenged with improving the theory and science behind vocational interest inventories to align them with current vocational constructions. In this study, validity comparisons were made between person matching and standard scoring based on 5,143 medical students who had taken a vocational interest inventory and had entered their medical residency. Person matching was found to improve differentiation between occupational groups and increase the amount of information offered in the scoring report; in addition, it could potentially increase occupational group assignment to advance vocational interest inventory validity.     

Are Shocks to Real Output Permanent or Transitory? Evidence from a Panel of “Asean” Per Capita GDP Data

Since economic theory provides reasons for nonlinearity in economic variables due to frictions/distortions in the economy, the use of linear unit root tests to examine the nonstationary properties of per-capita GDP (PCGDP) may provide misleading results. With this background we have analyzed the mean reversion properties of per capita real GDP of Association of South East Asian Nations (ASEAN) countries (for the period 1950–2010) using the recently developed Ucar and Omaga (Econ Lett 104:5–8, 2009) nonlinear panel unit root test. The results indicate that the PCGDP of ASEAN countries are nonlinear process and are stationary.     

Labeling theory and community care of the mentally ill in California: the relationship of social theory and ideology to public policy

The practical merit of a labeling theory approach to mental illness is examined and assessed through an exploration of its application in terms of public policy, i.e., community mental health policy in the state of California since 1968. Primary focus is placed on the impact of the deinstitutionalization of mental health services in that state, and the release of former mental patients into the community. Similarities in the fundamental ideological underpinnings of labeling theory, an associated conspiratorial model of mental illness, and contemporary California mental health policy, are presented and examples of policy input by labeling theorists and researchers are detailed. The impact of the California policy on the mentally ill is generally negatively assessed in terms of three major criteria: (1) rehabilitation; (2) reintegration; and (3) quality and continuity of care. The "translation" of several theoretical misconceptions regarding mental illness, caused by putting labeling theory into official policy, is suggested to lie at the root of many of the policy's implementation problems. The uses of social science theory and research are discussed, and caution is advised in the translation and application of social scientific theory and research to public policy proposals and programs.     

中国石油辽宁销售公司成品油合理库存分析

辽宁地区成品油市场保持合理库存,就是要避免出现脱销断档现象,避免库存积压,有效利用价格变动增加库存潜盈降低库存潜亏。不同区域应该保持不同的合理库存量,不同季节库存的合理值也会发生变化,不同品种在不同季节应该保持不同的合理库存量。进货的不确定性导致了合理库存在时间和量上很难把握,建议上级公司更多地赋予地区公司对计划控制的主动权。     

Hegel's universal in Marx,Durkheim and Weber: The role of Hegelian ideas in the origin of sociology

The theoretical origins of the conflict, functionalist and organizational paradigms in sociology are usually seen as distinct. Common elements in the social theories of Marx, Durkheim and Weber are usually seen as common responses to the development of industrial, capitalist, democratic, bureaucratic structures. However, in all three milieus, Hegel's social theory, particularly his theory of the break-up of feudal society, was a looming point of reference. Thus, an inventory of the respective common elements and breaks from Hegel of founding sociological theorists represents one of the simplest ways of relating Marx, Durkheim and Weber to each other and to neighboring disciplines.     

Towards the Measurement of EFL Listening Beliefs with Item Response Theory Methods

The present research aims to identify the underlying English listening belief structure of English-as-a-foreign-language (EFL) learners, thereby informing methodologies for subsequent analysis of beliefs with respect to listening achievement. Development of a measurement model of English listening learning beliefs entailed the creation of an inventory of the beliefs on EFL listening abilities and determination of reliability of measurement and model fit. Results of multidimensional item response theory analysis utilizing responses from 505 subjects confirmed a two-dimensional structure and found that the dimensionality of listening learning beliefs can be classified as Axiomatic and Praxis. Implications and suggestions for future research are discussed.     

Equal representation in two-tier voting systems

The paper investigates how voting weights should be assigned to differently sized constituencies of an assembly. The one-person, one-vote principle is interpreted as calling for a priori equal indirect influence on decisions. The latter are elements of a one-dimensional convex policy space and may result from strategic behavior consistent with the median voter theorem. Numerous artificial constituency configurations, the EU and the US are investigated by Monte–Carlo simulations. Penrose’s square root rule, which originally applies to preference-free dichotomous decision environments and holds only under very specific conditions, comes close to ensuring equal representation. It is thus more robust than previously suggested.     

Use of Ethnic-Sensitive Inventory (ESI) to Enhance Practitioner Skills with Minorities

This paper introduces an ethnic-sensitive inventory (ESI) to enhance practitioner skills with ethnic minorities. The theoretical conceptualization, methodological development and the psychometric properties of this inventory are presented along with its practical applications and limitations to social work practice and education.     

Development and Validation of a Scale to Measure Adolescent Sexual and Reproductive Health Stigma: Results From Young Women in Ghana

Young women’s experiences with sexual and reproductive health (SRH) stigma may contribute to unintended pregnancy. Thus, stigma interventions and rigorous measures to assess their impact are needed. Based on formative work, we generated a pool of 51 items on perceived stigma around different dimensions of adolescent SRH and family planning (sex, contraception, pregnancy, childbearing, abortion). We tested items in a survey study of 1,080 women ages 15 to 24 recruited from schools, health facilities, and universities in Ghana. Confirmatory factor analysis (CFA) identified the most conceptually and statistically relevant scale, and multivariable regression established construct validity via associations between stigma and contraceptive use. CFA provided strong support for our hypothesized Adolescent SRH Stigma Scale (chi-square p value < 0.001; root mean square error of approximation [RMSEA] = 0.07; standardized root mean square residual [SRMR] = 0.06). The final 20-item scale included three subscales: internalized stigma (six items), enacted stigma (seven items), and stigmatizing lay attitudes (seven items). The scale demonstrated good internal consistency (α = 0.74) and strong subscale correlations (α = 0.82 to 0.93). Higher SRH stigma scores were inversely associated with ever having used modern contraception (adjusted odds ratio [AOR] = 0.96, confidence interval [CI] = 0.94 to 0.99, p value = 0.006). A valid, reliable instrument for assessing SRH stigma and its impact on family planning, the Adolescent SRH Stigma Scale can inform and evaluate interventions to reduce/manage stigma and foster resilience among young women in Africa and beyond.     

A multidimensional inventory for assessment of parental functioning

This paper reports on the psychometric properties of a multidimensional inventory battery for the evaluation of the parenting behavior of participants in family support programs. This inventory was administered to 693 voluntarily enrolled participants in five family support programs aimed at reducing child abuse and neglect. The components of the inventory assess key aspects of parenting behavior as defined by ecological theories of human development. Included are measures of depression, parental knowledge of child developmental milestones, parental attitudes toward childrearing, and social support available to and used by the family unit. Response burden, internal consistency of each measure, and content, criterion, and construct validity are examined. The results show that the inventory can be administered in field settings with minimum disruption of service activities. Two of the four measures achieved satisfactory reliability and convergent validity (i.e., the depression scale and social support scale). Assessment of construct validity yielded results in accord with the ecological model of child development and family function.     

Controlling Anxiety Mediates the Influence of Childhood Adversities on Risky Sexual Behaviors Among Emerging Adults

Relatively little research has assessed the exposure-response relationship of childhood adversities on engaging in risky sexual behaviors. Also, no previous research has examined the interrelationship among childhood adversities, adult anxiety and depressive symptoms, and risky sexual behaviors. This study aimed to investigate their interrelationships. We used data from a multisite survey of emerging adults aged 18 to 29 studying at four universities in Hong Kong between September and December 2015. Structural equation modeling (SEM) was used to examine the pathways from childhood adversities to risky sexual behaviors. Participants who had higher childhood adversity scores reported more severe adult anxiety symptoms (β = 0.20, p = 0.002); and adult anxiety symptoms were associated with significantly more risky sexual behaviors (β = 0.46, p < 0.0001). The model with adult anxiety symptoms as the mediator between childhood adversities and risky sexual behaviors showed good fit (root mean square error of approximation [RMSEA] = 0.04, comparative fit index [CFI] = 0.96, Tucker-Lewis index [TLI] = 0.94 and standardized root mean square residual [SRMSR] = 0.04). However, adult depressive symptoms failed to mediate between childhood adversities and risky sexual behaviors. This study demonstrates the link between childhood adversities and risky sexual behaviors via adult anxiety but not adult depressive symptoms. It is essential to reduce anxious symptoms in dealing with emerging adults who have risky sexual behaviors to prevent sexually transmitted infections (STIs) and unintended pregnancy.     

The Marital Attitudes Scale: Assessing and Treating Ambivalent Clients

This article explores the complexities of the couple relationship commonly observed in the clinical settings of couple therapists. Whether described as the “push–pull” of the couple dyad, the mixed agenda couple, the couple that is leaning out versus leaning in, or the ambivalent couple, the literature suggests that this dynamic is to be assessed and explored before fully engaging in relational therapy or pursuing separation or divorce. The Marital Attitudes Scale is a 48-item self-report inventory that was normed with a clinical and nonclinical population at 2 clinical training sites. The inventory adheres to a cognitive-behavioral theoretical orientation with 4 subscales and a total score that measure cognitions, emotions, behaviors, schemas, and total scores relative to the ambivalence or the absence of commitment in the couple relationship. The instrument uses the frame of preambivalent, or committed to the relationship; ambivalent, ambivalently committed to the relationship; or postambivalent, no longer committed to the couple relationship. The inventory has evidenced good validity and reliability and is considered to be a useful inventory for assessing the degree of commitment to the relationship when a couple engages in therapy. This article explores the development of the inventory, its cognitive-behavioral theoretical orientation, the literature around the theme of marital dissolution, the concept of relational ambivalence, and the interface between assessment and therapeutic engagement.     

Big data from tiny flies: patterns revealed from over 42,000 phorid flies (Insecta: Diptera: Phoridae) collected over one year in Los Angeles,California, USA

The first ever large-scale inventory of an urban phorid fly fauna is described. Collections from 30 Malaise traps from urban Los Angeles over one year from the BioSCAN Project document the presence of 99 species from 42,480 specimens identified. Species accumulation curves predict 102–106 species actually occurring in this area. Collections are overwhelmingly dominated by the North American fungus feeding species Megaselia agarici, which accounts for about one quarter of all specimens identified. Percentage of M. agarici per site ranges from approximately 4% to 75%. Diversity varied significantly among sites, with species richness per site ranging from 23 to 82. Implications of patterns of abundance, diversity, and size are discussed.     

Relationships between muscle strength and multi-channel surface EMG parameters in eighty-eight elderly

Background

Since age-related muscle strength loss cannot be explained solely by muscle atrophy, other determinants would also contribute to muscle strength in elderly. The present study aimed to clarify contribution of neuromuscular activation pattern to muscle strength in elderly group. From 88 elderlies (age: 61~?83 years), multi-channel surface electromyography (EMG) of the vastus lateralis muscle was recorded with two-dimensional 64 electrodes during isometric submaximal ramp-up knee extension to assess neuromuscular activation pattern. Correlation analysis and stepwise regression analysis were performed between muscle strength and the parameters for signal amplitude and spatial distribution pattern, i.e., root mean square (RMS), correlation coefficient, and modified entropy of multi-channel surface EMG.

Results

There was a significant correlation between muscle strength and RMS (r =?0.361, p =?0.001) in the elderly. Muscle thickness (r =?0.519, p <?0.001), RMS (r =?0.288, p?=?0.001), and normalized RMS (r =?0.177, p =?0.047) were selected as major determinants of muscle strength in stepwise regression analysis (r?=?0.664 in the selected model).

Conclusion

These results suggest that inter-individual difference in muscle strength in elderly can be partly explained by surface EMG amplitude. We concluded that neuromuscular activation pattern is also major determinants of muscle strength on elderly in addition to indicator of muscle volume.

     

AIDS volunteers and their motivations: theoretical issues and practical concerns

Volunteers and volunteer organizations are critical elements in society's response to the HIV epidemic. This article reviews a model of the volunteer process that draws on psychological theory and methodology and incorporates concerns of individual volunteers, volunteer organizations, and society at large. An inventory for assessing the motivations of AIDS volunteers is introduced. The findings from a survey of volunteers working in AIDS organizations around the United States speak to their motivations, their choices of volunteer roles, and their decisions about quitting or continuing service. Based on these findings, a detailed set of recommendations for effective volunteer recruitment, assignment, and retention is offered.     

INTENSIFIERS IN BEHAVIORAL FREQUENCY QUESTIONS

Intensifiers, words such as "very" and "extremely", are usedto magnify the meaning of the phrases to which they are applied.In a series of studies we investigate how intensifiers in questionstems affect response patterns in social surveys. Our researchindicates that even apparently important differences in questionwording may in some situations have little or no impact; addingan intensifier to a root did not create a response shift forseveral intensifier/root combinations in large-scale surveys.Using both field and laboratory techniques we explore the situationsin which shifts do occur and go some lengths toward describingwhy this happens. Response shifts were observed for two situations.First, when "extreme" was applied to "physical pain" there wasa substantial and significant response shift. Second, when respondentswere asked a question without an intensifier and then had thequestion repeated immediately afterward with an intensifier,a response shift was produced. In addition to the practicalsignificance for survey methodologists, these results are importantto cognitive psychologists interested in word meaning.