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1.
We consider the assessment of outliers and influential observation in non-linear measurement error models. Residuals, leverage measures and case-deletiondiagonostics are examined. The method of local influence is also applied to the models. In particular, the perturbation of measurement error variances has been found useful in assessing the adequancy of the model assumptions. A numerical example is given to illustrate the application of the diagonostics. 相似文献
2.
The use of optimal orthogonal array latin hypercube designs is proposed. Orthogonal arrays were proposed for constructing latin hypercube designs by Tang (1993). Such designs generally have better space filling properties than random latin hypercube designs. Even so, these designs do not necessarily fill the space particularly well. As a result, we consider orthogonal-array-based latin hypercube designs that try to achieve optimality in some sense. Optimization is performed by adapting strategies found in Morris & Mitchell (1995) and Ye et al. (2000). The strategies here search only orthogonal-array-based latin hypercube designs and, as a result, optimal designs are found in a more efficient fashion. The designs found are in general agreement with existing optimal designs reported elsewhere. 相似文献
3.
Louise Townson Sue Macauley Elizabeth Harkness Andy Docherty John Dias Malcolm Eardley Rohhss Chapman 《Disability & Society》2007,22(5):523-536
This article presents the findings of a qualitative research project about the difficulties in accessing advocacy faced by adults labelled as having autism and Asperger's Syndrome in the Northwest of England. It is also an example of partnership working between three organisations. The article examines both the process of team-led (emancipatory) research and the project findings. Seven main themes emerged throughout the research: late diagnosis and lack of service support; bad experiences with systems of care; feelings of 'not belonging' (identity issues); barriers around communication and sensitivity towards individuals; lack of awareness and access to advocacy and rights; difficulties of 'fitting into' what is already available; and interest in developing knowledge around advocacy. Examination of the main themes pointed to a disturbing link between poor service response, episodes of crisis and mental ill health. The Carlisle People First Research Team is made up of 6 researchers who are labelled as having 'learning difficulties' who work in partnership with one other researcher. 相似文献
4.
This book deals with an important subject. Regrettably, it doesnot do so in a wholly successful way. The author's general purposeis to steer a path between a normativeethical approachto the topic and a politicalscientific one, and the mainmethodological stance adopted is a version of discourse analysis.Drawing, in particular, on the work of Laclau and Mouffe, sheexamines two discursive moments in European developmentdiscourse, or two different ways of justifying European developmentpolicy responsibility and efficiency. The first, atleast in the early stages of European policy, entailed a paternalisticsense of European concern for its former colonial possessions,while the latter legitimizes 相似文献
5.
Information Asymmetries in the Hiring Process and the Risk of New Leader Dismissal: Insights from English Premier League Soccer Organizations
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Why are some new leaders dismissed more quickly than others? Adopting agency theory logic, the authors examine how different succession contexts shape boards’ information asymmetries about a potential candidate's competencies in the hiring process, which influences the propensity of making poor hiring decisions and hence the risk of new leader dismissal. Employing duration analysis on a sample of 164 newly appointed leaders in the English premier league (1996–2014), the authors find that the risk of new leader dismissal is: (i) greater when the predecessor leader's exit was initiated by them rather than by the board; (ii) greater when following a longer‐tenured predecessor; and (iii) lower for outside successions compared with inside successions. 相似文献
6.
Andy J. Rottman Christopher J. Fariss Steven C. Poe 《The International migration review》2009,43(1):3-34
The migration of political asylum seekers into the United States has long been a salient political topic; however, social scientists have yet to examine this process in its entirety and in the context of political changes since September 11, 2001. Previous research shows that humanitarian and strategic interests are important for decisions made by asylum officers but that research overlooks the decisions made by immigration judges. Here we examine decisions made by both asylum officers and immigration judges using data from a global set of countries, from 1999 to 2004. We find that the waning importance of human rights is more pronounced for asylum officers than for immigration judges after the attack on the World Trade Center. We also find that language heritage, specifically for asylum seekers from English‐, Spanish‐, and Arabic‐speaking countries, substantially affects acceptance rates made by both decision‐makers between the two time periods of our study. 相似文献
7.
8.
Using an Acculturation‐Stress‐Resilience Framework to Explore Latent Profiles of Latina/o Language Brokers
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Jennifer A. Kam Katerina M. Marcoulides Andy J. Merolla 《Journal of research on adolescence》2017,27(4):842-861
With survey data from 243 Latina/o early adolescent language brokers, latent profile analyses were conducted to identify different types (i.e., profiles) of brokers. Profiles were based on how often Latina/o early adolescents brokered for family members, as well as their levels of family‐based acculturation stress, negative brokering beliefs, parentification, and positive brokering beliefs. Three brokering profiles emerged: (1) infrequent‐ambivalents, (2) occasional‐moderates, and (3) parentified‐endorsers. Profile membership was significantly predicted by ethnic identification and brokering in a medical context. Respect, brokering at school, and brokering at home did not significantly predict profile membership. In addition, parentified‐endorsers had more frequent perceived ethnic/racial discrimination and depressive symptoms than other profiles. In contrast, infrequent‐ambivalents engaged in risky behaviors less frequently than other profiles. 相似文献
9.
What motivates the geographic footprint of the supply chains that multinational firms (MNFs) deploy? Traditional research in the operations and supply chain management literature tends to recommend locations primarily based on differentials in production costs and the ramifications of physical distance ignoring the role of taxation. MNFs that strategically position parts of their supply chains in low‐tax locations can allocate the profits across the divisions to improve post‐tax profits. For the profit allocation to be defensible to tax authorities, the divisional operations must possess real decision authority and bear meaningful risks. Generally speaking, the greater the transfer of risk and control, the larger the allowable allocation of profit. These transfers may also create inefficiencies due to misalignment of business goals and attitudes toward risk. We model these trade‐offs in the context of placing in a low‐tax region a subsidiary that oversees product distribution (as a limited risk distributor commissionnaire, limited risk distributor, or fully fledged distributor). Our analysis demonstrates that the MNF's preferences regarding the operating structures are not necessarily an obvious ordering based on the amount of risk and decision authority transferred to the division in the low‐tax jurisdiction. We derive and analyze threshold values of the performance parameters that describe the main trade‐offs involved in selecting an operating structure. We find some of the optimal decisions to exhibit interesting non‐monotone behavior. For instance, profits can increase when the tax rate in the low‐tax jurisdiction increases. Numerical analysis shows that the Limited‐Risk Distributor structure is rarely optimal and quantifies when each alternative dominates it. 相似文献
10.
Andy Sharma 《Population research and policy review》2011,30(6):817-838
I test if selective out-migration of unhealthy seniors explains why disability rates are so much lower for Florida, as compared
to the national average. This particular area of research is timely given the significant demographic changes relating to
aging. Moreover, this study contributes to the body of literature examining migration with respect to disability and widowhood.
Using State Federal Information Processing Standard (FIPS) and Public Use Microdata Areas (PUMA), I create national maps showing
disability rates for the following age-groups: 50–59, 60–69, and 70+. After creating maps in ARCGIS and conducting univariate
and clustering analysis on mobility disability and personal care limitation, I employ multinomial logit (MNL) analysis to
test if individuals with disability are more likely to out-migrate from Florida. The regression analyses lend support to the
relaxed Litwak and Longino (The Gerontologist, 27(3): 266–272, 1987) second-move hypothesis, which claims individuals with progressively worse health are more likely to undertake another move
to be closer to family and friends. I state “relaxed” because the data does not allow one to determine the reason for migration—only
that migration occurred during the past year. This research informs policy-makers to recognize that elderly in better health
may migrate to places such as Arizona and Florida due to amenity-seeking behavior, but unhealthy elderly are more likely to
leave these states due to assistance-seeking behavior. This out-migration can place excess demand on health services for the
incoming regions, which requires state and local government to ensure resources are in place. Also noteworthy, my results
are less likely to be flawed by erroneous age and sex data in the public use microdata samples (IPUMS) since I stack the 2006
and 2007 American Community Survey (ACS). A recent working studies by Alexander et al. (Inaccurate age and sex data in the
Census PUMS files: Evidence and implications. Munich: CESifo, 2010) shows inaccuracies in the IPUMS for the 1 and 5% 2000 Census, the 2003–2006 ACS, the 2005–2007 3-year ACS, and the 2004–2009
current population survey (CPS) files. 相似文献