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991.
The present work is an attempt to estimate the population mean on the current occasion in two-occasion successive (rotation) sampling in presence of random non response situations. The estimation strategy has been constructed under a super-population model design approach with the help of imputation technique. The estimators proposed on the current occasion cover the cases of occurrences random non responses on either of the occasions. Detail behaviors of the proposed class of estimators have been studied and its performance has been examined with the sample mean estimator. The results are demonstrated through empirical studies which establish the effectiveness of the proposed class of estimators. Suitable recommendations have been put forward to the survey statisticians for its practical application. 相似文献
992.
Ricky T. Munoz Christina R. Miller Teresa A. Fritz Page N. Miller Jam Khojasteh 《Journal of Social Work Education》2019,55(2):363-375
Screening brief intervention, and referral to treatment (SBIRT) is a clinical intervention empirically linked to reductions in substance usage. However, less is known on how to effectively train social work students on SBIRT. This study examines the impact of a SBIRT training administered to BSW and MSW students (N=228) at the University of Oklahoma. Based on exposure to the training, our evaluation measured changes on students’ objective knowledge of how to perform SBIRT and in attitudes toward practicing with substance users. Results indicated exposure to the training was associated with robust gains across variables and across classes. Such results suggest that the proffered SBIRT training is an effective means to educate social work students on substance abuse practice. 相似文献
993.
ABSTRACTAn ideal of involved fatherhood has become popular in the developed countries, but even countries like Finland that have introduced an individual father’s quota to parental leave are far from gender equality in parents’ leave practices. Lack of support and negative attitudes at workplaces or pressure at work are among the obstacles to fathers’ leave take-up. The study used survey data from fathers and interviews at workplaces to explore the role of work and workplaces among the many aspects related to fathers’ possibilities of taking leave. The results showed that fathers’ income and workplace characteristics were associated with taking leave. Few fathers mentioned employers’ objection as a hinder. Father’s recent unemployment and anticipated difficulty of taking a long time off played a more important role. At workplaces, the obstacles to taking long leave were related to fathers’ ideals about a committed worker and to the nature and organizing of work. Additionally, the leave exceeding fathers’ quota might not be understood as ‘for fathers’. The spouse’s situation and fathers’ gendered perceptions about parental responsibilities were also important for leave practices. The findings suggest that policy development towards a longer father’s quota could make fathers’ care responsibilities visible also at workplaces. 相似文献
994.
Fabio Hirschhorn 《International Journal of Social Research Methodology》2019,22(3):309-322
The paper outlines the author’s experience employing the Delphi method, using as an example a particular application of the Delphi in the field of public transport research. Attention is given to aspects such as the choice of method, selection of experts, design of questionnaires, interaction between survey coordinator and participants, and also the analysis of experts’ responses. Some of the challenges encountered during the survey, the way they were dealt with, and risk mitigation strategies used by the Delphi coordinator are highlighted too. The primary objective of this paper is to offer insights that can support other researchers or practitioners preparing to apply the Delphi methodology. Furthermore, the article contributes to the methodological debate by reflecting on the introduction of novel practices that can help overcome some typical pitfalls of the Delphi: a dedicated blog supporting the survey, safety-net questions, and a constant-sum type question. 相似文献
995.
Fabio Giglietto Augusto Valeriani Nicola Righetti Giada Marino 《Information, Communication & Society》2019,22(11):1610-1629
ABSTRACTThe paper considers how social media ecologies are affecting partisan engagement around political news and online attention economies by investigating the case of the 2018 Italian general election. By analyzing Twitter and Facebook interactions around political news in the lead-up to the election, we shed light on levels of insularity characterizing sources preferred by different partisan communities and investigate how specific patterns of active attention emerge around different sources and around stories proposing different framing of specific political actors. Our findings indicate that, on Twitter, sources mainly shared by supporters of populist parties (the Five Star Movement and the League) are characterized by higher levels of insularity compared to those shared by supporters of other parties. We also find that, on Facebook, news items published by highly insular sources receive a higher number of shares per comment. Finally, our analyses show that news presenting a positive framing of the Five Star Movement – the unique ‘cyber party’ in the system – receives a higher number of shares per comment compared to items presenting the Movement in a negative light, while the opposite is true for stories on all other political parties. 相似文献
996.
Anne Groggel Shirin Nilizadeh Yong-Yeol Ahn Apu Kapadia Fabio Rojas 《Information, Communication & Society》2019,22(5):709-716
ABSTRACTRace, gender, and physical attractiveness strongly affect perceptions of trustworthiness and subsequent face-to-face interactions. This study examines how social media users’ perceived gender, race, and physical attractiveness can impact their standing online. We test these broad hypotheses by having Amazon Mechanical Turk (MTurk) workers evaluate a sample of 816 Twitter accounts. Our results show a ‘beauty premium,’ where MTurk workers say they are more likely to follow Twitter accounts with attractive pro?le photos, and attractive photos are positively associated with evaluations of trust. However, very attractive Black male and female Twitter accounts are associated with lower evaluations of trust compared to their White counterparts. These findings suggest that social media users’ social characteristics, perceived from their username or profile image, can replicate offline inequality online. 相似文献
997.
This article examines forms of care which can be used by social workers to best respond to unaccompanied minors (UAMs) given their complex needs and particular vulnerability combined with their agency and resilience. The vulnerabilities and agency/resilience of UAMs are examined in the context of multiple borders (cultural, political and physical) being negotiated by these young people. While it focuses on Ireland as an example of a country where care provision for UAMs has improved considerably in recent years, it draws on both the Irish and international literatures. This article critically analyses the shift from hostel to foster care provision for UAMs in Ireland and explores benefits and difficulties associated with using foster care, while also discussing the use of alternative forms of care, such as residential care. We argue that social workers must always give consideration to a range of care options, to the needs of the individual child and to both their vulnerability and their resilience/agency. This is especially true given the diversity within the population of UAMs. Given the increasing numbers of refugees entering Europe and the mix of provision for UAMs across the continent, the Irish situation may represent a useful site for examination of their care. 相似文献
998.
Vyacheslav N. Romanov Narayanan Krishnamurthy Amit K. Verma Laura S. Bruckman Roger H. French Jennifer L.W. Carter Jeffrey A. Hawk 《Statistical Analysis and Data Mining》2019,12(4):290-301
A materials data analytics (MDA) methodology was developed in this study to evaluate publicly available information on 9% Cr family steel and to handle nonlinear relationships and the sparsity in materials data for this alloy class. The overarching goal is to accelerate the design process as well as to reduce the time and expense associated with qualification testing of new alloys for fossil energy applications. Data entries in the analyzed data set for 82 iron‐base alloy compositions, several processing parameters, and results of tensile mechanical tests selected for this study were arranged in 34 columns by 915 rows. While detailed microstructural information was not available, it is assumed that the compositional space for the 9 to 12% Cr steels is limited such that all data entries have a tempered martensitic microstructure during service. Establishing a hierarchy of first‐order trends in the publicly available data requires the MDA to filter out the biases. Complexity of the phase transformations and microstructure evolution in the multicomponent alloys (using 21 chemical elements) with major influence on mechanical properties, leads to inefficiency in direct application of unbiased linear regression across the entire data space. To address the nonlinearity, analyses of tensile data were performed in composition‐based clusters. Clusters corresponding to moderately frequent patterns and maximized information gain were further refined by using p‐norm distance measures, matching the alloy classification groups adopted by industry. The evolutionary method of propagating an ensemble of competing cluster‐based models proved to be a viable option in dealing with scarce, multidimensional data. 相似文献
999.
This research explores the critical role of Green Intellectual Capital (GIC) in fostering business sustainability within the Indian hotel industry, with a particular focus on the mediating effect of dynamic capabilities. GIC comprises three key components such as Green Human Capital (GHC), Green Relational Capital (GRC), and Green Structural Capital (GSC). Dynamic capabilities, which enable organizations to sense, seize, and transform resources in response to environmental changes, play a crucial role in enhancing the relationship between GIC and sustainability outcomes. Using a quantitative approach, a survey was conducted with 400 professionals from the Indian hotel sector. Structural equation modeling (SEM) was applied to examine the relationships between GIC, Dynamic capabilities, and Business sustainability. The findings reveal that GHC and GRC have significant direct effects on business sustainability, while GSC's impact is primarily mediated by dynamic capabilities. The results emphasize that dynamic capabilities allow hotels to adapt and innovate in the face of sustainability challenges, ensuring long-term business viability. This work addresses a gap in the existing literature by focusing on the hospitality sector in a developing economy, offering practical insights for hotel managers to leverage GIC and dynamic capabilities to improve sustainability. It also contributes to theoretical frameworks by integrating the Resource-Based View (RBV) and Dynamic Capabilities theories. Future research could expand to other sectors and explore additional mediating variables. 相似文献
1000.
Grace L. Jackson Jennifer L. Krull Thomas N. Bradbury Benjamin R. Karney 《Journal of marriage and the family》2017,79(3):690-704
Are the marriages of lower income couples less satisfying than the marriages of more affluent couples? To address this question, we compared trajectories of marital satisfaction among couples with a wide range of household incomes. The marital satisfaction of 862 Black, White, and Latino newlywed spouses (N = 431 couples) was assessed five times, each 9 months apart, during the first 4 years of marriage. Lower income couples did not have less satisfying marriages on average, nor did their satisfaction decline more steeply on average. They did, however, experience (a) significantly greater fluctuations in marital satisfaction across assessments and (b) significantly more variability between husbands and wives. If efforts to support the marriages of low‐income couples are to address the unique characteristics of their marital development, these findings suggest that efforts to stabilize their marriages may be more effective than efforts to improve their satisfaction alone. 相似文献