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Peter Wood 《Academic Questions》2014,27(1):96-102

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Efficient distributed selective search     

Yubin Kim  Jamie Callan  J. Shane Culpepper  Alistair Moffat 《Information Retrieval》2017,20(3):221-252

Simulation and analysis have shown that selective search can reduce the cost of large-scale distributed information retrieval. By partitioning the collection into small topical shards, and then using a resource ranking algorithm to choose a subset of shards to search for each query, fewer postings are evaluated. In this paper we extend the study of selective search into new areas using a fine-grained simulation, examining the difference in efficiency when term-based and sample-based resource selection algorithms are used; measuring the effect of two policies for assigning index shards to machines; and exploring the benefits of index-spreading and mirroring as the number of deployed machines is varied. Results obtained for two large datasets and four large query logs confirm that selective search is significantly more efficient than conventional distributed search architectures and can handle higher query rates. Furthermore, we demonstrate that selective search can be tuned to avoid bottlenecks, and thus maximize usage of the underlying computer hardware.  相似文献   

The Interparental Relationship and Family Problem Solving with Preadolescent Males     

Samuel Vuchinich  Regina Vuchinich  Barbara Wood 《Child development》1993,64(5):1389-1400

This study examines associations between the quality of the interparental relationship and how well 68 family triads (mother, father, preadolescent son) solved salient problems which arose at home. Four aspects of the interparental relationship (marital satisfaction, parental agreement, conflict during family problem solving, and parental coalitions) were included in a regression analysis which controlled for family structure and child externalizing. A longitudinal design assessed families when mean child age was 9.7 years and 2 years later. Parental agreement consistently facilitated family problem solving. However, strong parental coalitions inhibited family problem solving, which may be attributed to frustrated autonomy needs of preadolescent males in response to the parental coalition. Stepfamilies had less effective problem solving at Time 1. The results confirm the benefits of parental agreement to child outcomes via enhanced family problem solving but show a reverse effect when agreement occurs in the context of coalitions against a preadolescent son.  相似文献   

The role of a local newspaper after disaster: an intrinsic case study of Ishinomaki,Japan     

Jamie Matthews 《亚洲交流杂志》2017,27(5):464-479

The city of Ishinomaki in Miyagi prefecture was devastated by the tsunami that struck Japan’s North East Coast on 11 March 2011. Drawing on fieldwork conducted in Ishinomaki, which included interviews with senior journalists from the city’s two local newspapers, the Ishinomaki Hibi Shimbun and the Ishinomaki Kahoku, this paper presents an intrinsic case study of the role a local newspaper in Ishinomaki after the Great East Japan Disaster. The evidence reveals that in the immediate aftermath of the tsunami journalists recognised how their newspaper could serve the immediate information-needs of the local community by providing essential lifeline information, describing a duty to report, despite the operational difficulties that their newspapers faced. In the longer term recovery phase, interviewees acknowledged how their newspapers have attempted to communicate a message of hope to the city and provide an alternative perspective to the national media, which sometimes gave a false impression of the state of Ishinomaki’s recovery. This paper offers some insights into journalistic role conceptions, illustrating how journalists from the two newspapers embraced the role of information-disseminator after the disaster, and also identifies avenues for further research.  相似文献   

Connecting Science and Mathematics: The Nature of Scientific and Statistical Hypothesis Testing     

Anton E. Lawson  Michael Oehrtman  Jamie Jensen 《International Journal of Science and Mathematics Education》2008,6(2):405-416

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Racial Preferences Revisited     

Peter Wood 《Academic Questions》2008,21(3):254-257

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Do allegations of emotional maltreatment predict developmental outcomes beyond that of other forms of maltreatment?     

Schneider MW  Ross A  Graham JC  Zielinski A 《Child abuse & neglect》2005,29(5):513-532

OBJECTIVES: To understand the features of child abuse/neglect (CA/N) allegations in cases with emotional maltreatment (EMT) allegations, as well as the features of the EMT allegations themselves, and to describe any associations of EMT with distinct impairments of children's behavior, emotion and functioning. METHOD: The sample consisted of 806 high-risk children, 545 with one or more maltreatment reports to CPS. The Maltreatment Classification System was used to record the number and severity levels of maltreatment allegations, which compared cases with and without EMT. Multiple regression analyses were conducted using 10 outcome scales from the Child Behavior Checklist, Vineland Screener, and Trauma Symptom Checklist. Successive blocks of predictor variables included demographics, maltreatment classification variables, maternal and family characteristics, and study site. RESULTS: When there were allegations of EMT as well as CA/N in a CPS case-record (by age 8), the CA/N allegations tended to be either more frequent or less severe than those kinds of allegations in cases without EMT. When neglect was alleged to occur with EMT, neglect allegations outnumbered allegations of EMT. However, when sexual abuse allegations were accompanied by EMT allegations, there were more EMT allegations than sexual abuse allegations in the cases. Higher severity ratings for EMT allegations than for physical abuse occurred when cases included any abuse. Distinctive effects of EMT subtypes were found between problems of safety/restriction and self-reported anger symptoms, and between problems of self-esteem/autonomy and posttraumatic stress. CONCLUSION: Differences exist between the CA/N allegations in cases with and without EMT. Having few cases containing only EMT allegations made it difficult to assess distinctive harm associated with EMT. Certain types of EMT allegations were associated with increases in children's anger and posttraumatic stress.  相似文献   

Children’s Developing Ability to Resolve Disagreements by Integrating Perspectives     

Jamie Amemiya  Caren M. Walker  Gail D. Heyman 《Child development》2021,92(6):e1228-e1241

Children live in a world where disagreement is commonplace. Although disagreement can sometimes be explained by differences in people’s reliability, disagreement may also indicate that the referent elicits multiple perspectives. The present studies (total N = 129, 5- to 12-year-old ethnically diverse U.S. children, 42% girls) examined children’s ability to resolve disagreement among two individuals by identifying referents that integrated the perspectives, and considered the extent to which any age-related change could be explained by epistemological understanding (i.e., acknowledging that two perspectives can be right). Children’s age was positively correlated with their ability to integrate perspectives, and children performed at above-chance levels by approximately 10 years of age. Age differences in integrating perspectives were partially accounted for by epistemological understanding.  相似文献   

Training engaged student employees: A small college library experience     

Jamie P. Kohler 《College & Undergraduate Libraries》2016,23(4):363-380

Student employees are often the first people patrons contact when they enter an academic library, and thus their knowledge level and service skills are crucial to academic library success. This article presents a case study of the job-related knowledge and customer service skills of undergraduate student employees in a small liberal arts college after the implementation of a training program more focused on patron service. Both successes and failures are discussed.  相似文献   

A Model of School Counseling Supervision: The Goals,Functions, Roles,and Systems Model     

Chris Wood  Andrea Dixon Rayle 《Counselor Education & Supervision》2006,45(4):253-266

The authors outline the Goals, Functions, Roles, and Systems Model (GFRS), a school counseling—specific model for supervising school counselors‐in‐training (SCITs). The GFRS was created as a guide for assisting in supervising and preparing SCITs for the multifaceted tasks they will undertake in their internships and careers. The components of this model are described within the context of the systems influencing supervision of SCITs. The GFRS is detailed to illustrate how it meets the specific needs of school counseling supervision. Examples are included of the GFRS when applied in supervision.  相似文献