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Uddin Md. Elmarhomy Elsayed Masao Kazuhiro Jun-ichi 《Information processing & management》2007,43(6):1793
Field Association (FA) terms are a limited set of discriminating terms that can specify document fields. Document fields can be decided efficiently if there are many relevant FA terms in that documents. An earlier approach built FA terms dictionary using a WWW search engine, but there were irrelevant selected FA terms in that dictionary because that approach extracted FA terms from the whole documents. This paper proposes a new approach for extracting FA terms using passage (portions of a document text) technique rather than extracting them from the whole documents. This approach extracts FA terms more accurately than the earlier approach. The proposed approach is evaluated for 38,372 articles from the large tagged corpus. According to experimental results, it turns out that by using the new approach about 24% more relevant FA terms are appending to the earlier FA term dictionary and around 32% irrelevant FA terms are deleted. Moreover, precision and recall are achieved 98% and 94% respectively using the new approach. 相似文献
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Abstract Cross‐border informal trade is one of the most important issues between India and Bangladesh. It takes place between people who live a short distance apart, but who find themselves separated by an international boundary. The people of international border areas believe that cross‐border informal trade is a process to maintain a sustainable livelihood because it provides a livelihood to the unemployed. This research has analysed the nature and impact of informal border trade between India and Bangladesh. It has highlighted the sources of security and insecurity through the process of informal border trade. It also analyses the different socio‐economic conditions of informal border trade in border trade prone areas. This research argues that although informal border trade is considered illegal, it is necessary for the maintenance of the livelihood for the poor in the bordering areas. The state failures in fulfilling the needs of the poor force them to involve themselves in informal border trade. 相似文献
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This paper identifies the sources and channels of information in the rural areas of Bangladesh and highlights the information flow and access patterns at the village level of Comilla and Chittagong districts in Bangladesh. It proposes some suggestions for effective information services in rural area, as well as a specific model for a Bangladesh Integrated Rural Information System (BD-IRIS) to improve the information system of villagers. This study uses structured interviews through a pilot survey of 20% of the households from each village and information gathered by personal observations and other secondary sources, as well as appropriate statistical methods. A total of 155 responses is included in the study.Existing conditions of information flow and access in this case study indicate that there are problems in access in spite of interpersonal sources and channels of information. Of course, it is important to remember that the low literacy rate in the villages studied and in many similar communities presents many serious barriers. The author recommends establishing a Village Information Center (VIC) to provide integrated and concerted information services, along with an integrated rural information system for the purpose in the villages studies, and more widely, to meet the requirements of all people in villages in Bangladesh. The case study is one of very few studies focusing on the flow and access of information for rural areas of Bangladesh, particularly as regards information sources and channels, system and services. The approach can be replicated in other communities, and the proposed model for future direction to improve information system of village level people of Bangladesh could be modified for use in other countries. 相似文献
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Communication network is a personal or professional set of relationships between individuals or organizations. In other words, it is a pattern of contacts which are created due to the flow of information among the participating actors. The flow of information establishes various types of relationships among the participating entities. These relationships eventually form an overall pattern that could form a gestalt of the total structure within organizational context. In this paper, we analyze the changing communications structure in order to investigate the patterns associated with the final stages of organizational crisis. Organizational crisis has been defined as organizational mortality, organizational death, organizational exit, bankruptcy, decline, retrenchment and failure to characterize various forms of organizational crisis. We draw on theoretical perspectives on organizational crisis proposed by social network analysts and other sociologists to test 5 key propositions on the changes in the network communication structure associated with organizational crisis: (1) a few actors, who are prominent or more active, will become central during the organizational crisis period; (2) reciprocity within the organizational communication network will increase during crisis period; (3) organizational communication network becomes less transitive as organizations experience crisis; (4) number of cliques increases in a communication network as organizations are going through crisis; and (5) communication network becomes increasingly centralized as organizations go through crisis. 相似文献
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MD. Ektear Uddin MD. Mamun-Ur-Rashid 《The Journal of Agricultural Education and Extension》2016,22(1):43-60
Purpose: Globally, many extension professionals and policy-makers are advocating fee based services, in addressing the fund shortage and sustainable provision of agricultural advisory services. Hence, the article attempts to expose the farmers' willingness to pay (WTP) as agricultural extension in Bangladesh is experiencing chronic fund crisis.
Methodology: This study used contingent valuation method (CVM) for investigating farmers' WTP. Logit and Tobit model was employed to assess the determinants of WTP and amount willing to pay (AWTP) respectively. Besides, different qualitative methods were employed to have a deeper understanding of the research problems.
Findings: WTP was conditioned by providing quality extension services at farm and/or home of the farmers. The study also focused on farmers preferred mode of payment, criteria influencing payment decisions and the type of services for which they are willing to pay. Paid model can contribute to quality extension services, if started with a market oriented commodity based approach accompanied by adequate crop insurance support.
Practical implications: The study considered international experiences and national crisis in delivering extension services that provoke actions towards changing the extension policy of Bangladesh. The findings also prompt the factors that influence the paid extension service delivery for the crop farmers of Bangladesh.
Originality: Although, many studies have been conducted on privatisation of agricultural extension around the globe, we are not aware of any single study on crop farmers' willingness to pay for the extension services in Bangladesh. 相似文献
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Jyoti Prakash Bagchi Haseen Uddin 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1990,36(4):453-467
Earlier studies on cognitive preferences have concentrated on students, whereas the subjects here are teachers of science. The study seeks to compare how cognitive preferences differ in groups of secondary school teachers identified by type of curriculum taught (traditional vs. enquiry-oriented), gender, length of teaching experience, and educational qualification.The Combined Cognitive Preference Inventory compiled by Pinchas Tamir was applied to 103 subjects drawn by random cluster sampling from urban schools. Inferential statistical analysis was employed, with a matched group design. With few exceptions the overall pattern of cognitive preferences that emerged for all the groups is Recall-Principles-Application-Questioning. These results do not confirm anticipated differences, and bring home the fact that teachers' congnitive preferences remain constant. The implications for implementation of innovative curricula and teacher education are discussed.
Zusammenfassung Frühere Studien über kognitive Präferenzen konzentrierten sich auf Studenten, während Thema dieses Artikels Lehrer im wissenschaftlichen Bereich sind. Die Studie will einen Vergleich anstellen, wie kognitive Präferenzen sich nach Gruppen von Sekundarschullehrern unterscheiden, die nach verschiedenen Kriterien wie Art des unterrichteten Curriculums (traditionell gegen Frageorientierte), Geschlecht, Länge der Berufserfahrung und Qualifikationen bestimmt wurden.Das von Pinchas Tamir aufgestellte zusammengefaßte Inventar der kognitiven Präferenzen wurde bei 103 Lehrern an städtischen Schulen durch Zufallsstichprobenerhebung angewandt. Eine zu Schlußfolgerungen führende statistische Analyse wurde erstellt, und zwar mit einem matched group design (parallelisiertes Gruppendesign). Das sich mit wenigen Ausnahmen für alle Gruppen ergebende Grundmuster der kognitiven Präferenzen ist Erinnerung-Grundsätze-Anwendung-Fragestellung. Diese Ergebnisse bestätigen die angenommenen Unterschiede nicht, und sie lassen erkennen, daß die kognitiven Präferenzen der Lehrer konstant bleiben. Die Auswirkungen auf die Einführung innovativer Curricula und auf die Lehrerausbildung werden diskutiert.
Résumé Les études effectuées sur les préférences cognitives étaient focalisées au départ sur les apprenants, tandis que les questions étudiées ici portent sur les enseignants de science. La présente étude tente d'établir une comparaison entre les préférences cognitives des différents groupes d'enseignants du secondaire qui ont été identifiés d'après le type de programme enseigné (programme traditionnel contre programme orienté vers la recherche), le sexe, la longueur de l'expérience didactique et les qualifications pédagogiques.L'inventaire des préférences connitives combinées compilé par Pinchas Tamir a été appliqué à 103 matières sélectionnées au hasard à partir d'un échantillonnage d'écoles urbaines. On a employé l'analyse statistique déductive, avec un plan de groupe correspondant. Mises à part quelques exceptions, la structure générale des préférences cognitives qui s'est dégagée pour tous les groupes est la suivante: Rappel-Principes-Application-Interrogation. Ces résultats ne corroborent pas les différences anticipées et font comprendre le fait que les préférences cognitives des enseignants sont constantes. On examine les implications de ces résultats pour la mise en oeuvre de programmes d'étude novateurs et la formation des formateurs.相似文献
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