Solving Hitchcock’s transportation problem by a genetic algorithm     

陈海峰  CHO Joong. Rae  LEE Jeong. Tae 《重庆大学学报(英文版)》2004,(2)

IntroductionTheHitchcock’sTransportationProblem(HTP)canbeformulatedasaclassiclinearprogrammingprobleminwhichthesetofconstraintsisofaspecialstructure[1,2].TheHTPisapracticaltransportationprobleminproductiondistributionsector.Alotofpracticaltrans-portationandassignmentproblems,suchastheminimumcostroadnetworktrafficflowproblemwithsolidchargeinlogistics,canbeformulatedinthisway,anditisclearlythattheHTPmaybehasmorethanoneoptimalsolution.Itisveryimportantforadecision-makertoselectafavorableone…  相似文献   

Young adolescents' metacognition and domain knowledge as predictors of hypothesis‐development performance in a computer‐supported context     

Hye Jeong Kim  Susan Pedersen 《教育心理学》2010,30(5):565-582

Recently, the importance of ill‐structured problem‐solving in real‐world contexts has become a focus of educational research. Particularly, the hypothesis‐development process has been examined as one of the keys to developing a high‐quality solution in a problem context. The authors of this study examined predictive relations between young adolescents' metacognition, prior domain knowledge, and hypothesis‐development performance in a computer‐supported environment. Data were collected from 11‐ and 12‐year‐old Korean students (N = 101). A hypothesised model in predicting hypothesis‐development performance was evaluated using structural equation modelling. Both metacognition and prior domain knowledge significantly predicted young adolescents' hypothesis‐development performance. Implications and limitations of the present study and issues, including the experimental design, are discussed.  相似文献   

Inquiry Resources Collection as a Boundary Object Supporting Meaningful Collaboration in a Wiki-Based Scientist-Teacher Community     

Hye Jeong Kim  Bruce Herbert 《Journal of Science Education and Technology》2012,21(4):504-512

Different interpretations of scientific inquiry exist between the two different communities of scientists and science teachers. Thus, in order to achieve a successful partnership between science teachers and scientists in establishing effective communities of practice, the framework for instructional practice in teacher professional development needs to be carefully designed. To respond to this challenge, we developed the Inquiry Resources Collection (IRC), which offers a wiki-based inquiry resource collection developed by scientists to support novice science teachers?? inquiry lesson design. The collaborative managing and sharing of knowledge in a professional development program via a wiki environment is the key to developing a practical resource for novice teachers teaching scientific inquiry. Based on our reflection of data gathered during 4?years of our project, we invoked the ideas of boundary objects and reflective apprenticeship between scientists and teachers to design the IRC.  相似文献   

Structure or Predisposition? Exploring the Interaction Effect of Discussion Orientation and Discussion Heterogeneity on Political Participation     

Eunkyung Kim  Dietram Scheufele  Jeong Yeob Han 《Mass Communication and Society》2013,16(4):502-526

Past research on how discussions with non-like-minded others impacts political participation has focused mostly on structural attributes of discussion networks, and—as a result—has produced inconsistent findings. This study, therefore, introduced the concept of discussion orientation—one's willingness to express and listen in political discussion, even when disagreement exists—as a predispositional explanation of the impact of discussion heterogeneity on political participation. Based on the national telephone survey data, during the course of the 2004 election, we find a strong main effect of individual predisposition to express different opinions on political participation. In addition, the link between discussion heterogeneity and political participation is significantly stronger for those respondents who exhibit a willingness to express different opinions during those conversations.  相似文献   

Does Online News Reading and Sharing Shape Perceptions of the Internet as a Place for Public Deliberations?     

Hyunjin Kang  Jeong Kyu Lee  Kyung Han You  Seoyeon Lee 《Mass Communication and Society》2013,16(4):533-556

With the rapid development of interactive communication technology, the Internet is a major source of news and also plays an important role in connecting individual members of society. However, Internet users may have different perspectives on whether the Internet positively functions as a medium for public deliberation. Based on the assumption that being exposed to information on public affairs is a crucial step for one's civic engagement, this study explores how individuals’ motives related to news consumption, elaborative online news reading, and online news sharing influence their perceptions of online deliberation using structural equation modeling method (N = 998). The study finds significant relationships between news consumption motives and elaborative news reading and sharing behaviors, but only elaborative reading behavior had a significant effect on one's perceptions of online deliberation. The implications of these findings are discussed.  相似文献   

Not Meta Just Data: Redefining Content and Metadata in Archival Theory and Practice1     

Greg Bak 《Journal Of Archival Organization》2016,13(1-2):2-18

How we imagine records affects what we acquire and how we manage it. I take up the call from Arjun Appadurai to view archives as deliberate creations, and from Hugh Taylor to use imagination as a means of creative engagement with archival theory. I explore how we can reimagine archival work, mandates, and records by eschewing divisions of content and metadata, acknowledging items and aggregations to be interchangeable concepts, and integrating data about use into archival data management.  相似文献   

Cultural Distance and Foreign Drama Enjoyment: Perceived Novelty and Identification with Characters     

Young Min Baek  Hye Min Kim 《广播与电子媒介杂志》2016,60(3):527-546

This study employs a cross-cultural perspective to examine how local audiences perceive and enjoy foreign dramas and how this psychological process differs depending on the cultural distance between the media and the viewing audience. Using a convenience sample of young Korean college students, this study, as predicted by cultural discount theory, shows that cultural distance decreases Korean audiences’ perceived identification with dramatic characters, which erodes their enjoyment of foreign dramas. Unlike cultural discount theory, however, cultural distance arouses Korean audiences’ perception of novelty, which heightens their enjoyment of foreign dramas. This study discusses the theoretical and practical implications of these findings, as well as their potential limitations.  相似文献   

Mentoring with underrepresented populations and diverse groups     

Beverly J. Irby  Jennifer Boswell  Shinhee Jeong 《Mentoring & Tutoring: Partnership in Learning》2018,26(1):1-3

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Korean wave: Enjoyment factors of Korean dramas in the U.S.     

Lisa M. Chuang  Hye Eun Lee 《Int J Intercult Relat》2013

From a disposition theory perspective, successful dramas are driven by the development of strong dispositions towards characters. Thus, disposition theory logic is used to predict the enjoyment of American viewers when watching two different Korean dramas (Personal Preference and Secret Garden). The influence of sex, affective dispositions, empathy, open-mindedness, and past exposure to Korean culture on audience enjoyment is measured. The findings support the basic premise of disposition theory that the development of strong dispositions towards characters is needed in order to develop emotional responses necessary for successful dramas. Disposition theory can be used to explain viewing dispositions in order to predict enjoyment cross-culturally.  相似文献   

The mentoring relationship     

Beverly J. Irby  Jennifer N. Boswell  Kimberly Kappler Hewitt  Julia Lynch  Nahed Abdelrahman  Shin-hee Jeong 《Mentoring & Tutoring: Partnership in Learning》2017,25(2):119-122

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