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Debasis?GangulyEmail authorView author&#;s OrcID profile Gareth?J.?F.?Jones Aarón?Ramírez-de-la-Cruz Gabriela?Ramírez-de-la-Rosa Esaú?Villatoro-Tello 《Information Retrieval》2018,21(1):1-23
Automatic detection of source code plagiarism is an important research field for both the commercial software industry and within the research community. Existing methods of plagiarism detection primarily involve exhaustive pairwise document comparison, which does not scale well for large software collections. To achieve scalability, we approach the problem from an information retrieval (IR) perspective. We retrieve a ranked list of candidate documents in response to a pseudo-query representation constructed from each source code document in the collection. The challenge in source code document retrieval is that the standard bag-of-words (BoW) representation model for such documents is likely to result in many false positives being retrieved, because of the use of identical programming language specific constructs and keywords. To address this problem, we make use of an abstract syntax tree (AST) representation of the source code documents. While the IR approach is efficient, it is essentially unsupervised in nature. To further improve its effectiveness, we apply a supervised classifier (pre-trained with features extracted from sample plagiarized source code pairs) on the top ranked retrieved documents. We report experiments on the SOCO-2014 dataset comprising 12K Java source files with almost 1M lines of code. Our experiments confirm that the AST based approach produces significantly better retrieval effectiveness than a standard BoW representation, i.e., the AST based approach is able to identify a higher number of plagiarized source code documents at top ranks in response to a query source code document. The supervised classifier, trained on features extracted from sample plagiarized source code pairs, is shown to effectively filter and thus further improve the ranked list of retrieved candidate plagiarized documents. 相似文献
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Y.?S.?SiddeGowdaEmail author 《International journal for the advancement of counseling》2004,26(4):421-432
This investigation presents a framework for understanding and also to test the efficacy of Social Work intervention on the well being of the white collared employee (industrial employee) and his/her family. A comprehensive and intensive personal- family exploration was done to uncover the relatedness of seemingly disparate areas of the clients lives. A total of 80 executives (industrial employees) served as subjects. A baseline assessment was done using structured, standardized interview-schedules/questionnaires. The results of the study can be enumerated as follows: After the Social Work intervention, the executives in occupational profile, there were significant changes in Role perception, overload, role conflict, low status and poor peer relations. In coping strategies there was significant improvement in sub-scales like problem solving and unproductive coping. Significant reduction was noticed in their proneness to heart disease, depression, inadequate mental mastery, and perceived ill health. There was significant improvement in their family group support, and in their expressiveness, achievement, orientation, active-recreational and organizational characteristics. 相似文献
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Yangxueqingnao particles inhibit rat vascular smooth muscle cell proliferation induced by lysophosphatidic acid 总被引：1，自引：0，他引：1
Cai W Xu Y Chen JZ Huang SR Lu ZY Wang ZK 《Journal of Zhejiang University. Science. B》2005,6(9):892-896
Objective: To observe the effect of Yangxueqingnao particles on rat vascular smooth muscle cell (VSMC) proliferation induced by lysophosphatidic acid (LPA). Methods: The amount of3H-TdR (3H-thymidine) admixed in cultured rat VSMC was measured and mitogen-activated protein kinase (MAPK) activity and lipid peroxidation end product malondialdehyde (MDA)content of the VSMC were assayed. Results: 1×10-9, 1×10-8, 1×10-7 mol/L LPA in a concentration dependent manner, induced the amount of 3H-TdR admixed, MAP kinase activity, and MDA content of the cultured rat VSMC to increase. However, 5%, 10%,and 15% Yangxueqingnao serum preincubation resulted in a decrease of 23.0%, 42.0%, and 52.0% (P＜0.01) respectively in the amount of 3H-TdR admixed, a decline in VSMC MAP kinase activity of 13.9% (P＜0.05), 29.6% (P＜0.01), and 48.9% (P＜0.01)respectively, and also, a decrease in MDA content of VSMC of 19.4%, 24.7%, and 43.2% (P＜0.01) respectively, in the 1×10-7mol/L LPA-treated VSMC. Conclusions: LPA activates the proliferation and lipid peroxidation of VSMC in a concentration dependent manner. The LPA-induced VSMC proliferation is related to the activity of MAP kinases, enzymes involved in an intracellular signalling pathway. The results of the present study showed that Yangxueqingnao particles can effectively inhibit LPA-induced VSMC proliferation, MAP kinase activation, and reduce lipid peroxidative lesion. 相似文献
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This investigation analyzed goals from the Individual Educational Programs (IEPs) of 54 high school students with diagnosed
reading disabilities in basic skills (decoding and/or word identification). Results showed that for 73% of the students, the
IEPs written when they were in high school failed to specify any objectives regarding their acute difficulties with basic
skills. IEPs from earlier points in the students’ educations were also reviewed, as available. For 23 of the students, IEPs
were present in the students’ files for three time points: elementary school (ES), middle school (MS), and high school (HS).
Another 20 students from the sample of 54 had IEPs available for two time points (HS and either MS or ES). Comparisons with
the IEPs from younger years showed a pattern of decline from ES to MS to HS in the percentage of IEPs that commented on or
set goals pertaining to weaknesses in decoding. These findings suggest that basic skills deficits that persist into the upper
grade levels are not being sufficiently targeted for remediation, and help explain why older students frequently fail to resolve
their reading problems. 相似文献
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Johnson?M.?IshengomaEmail author 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2005,51(2-3):139-153
This study argues for the integration of African oral traditions and other elements of traditional learning into the modern school curriculum. It thus contributes to supporting the increased relevance of education to local communities. In particular, using the example of riddles collected from one of the main ethnic groups in Northwestern Tanzania, the Haya people, the present study challenges the views of those social and cultural anthropologists who hold that African riddles have no substantially meaningful educational value. Instead, it is maintained that riddles make an important contribution to children’s full participation in the social, cultural, political, and economic life of African communities, especially by fostering critical thinking and transmitting indigenous knowledge.
Zusammenfassung MÜNDLICHE TRADITIONEN IN AFRIKA: DER ERZIEHERISCHE WERT VON RÄTSELN BEI DEN HAYA IM NORDWESTLICHEN TANSANIA – Diese Studie argumentiert für die Einbeziehung afrikanischer mündlicher Traditionen und anderer Elemente traditionellen Lernens in den modernen schulischen Lehrplan. Sie fördert somit die gestiegene Bedeutung der Bildung für die örtlichen Gemeinschaften. Insbesondere begegnet die vorliegende Studie, indem sie das Beispiel von Rätseln gebraucht, die bei einer der Hauptvolksgruppen im nordwestlichen Tansania, dem Volk der Haya, gesammelt wurden, den Ansichten derjenigen Sozial- und Kulturanthropologen, die behaupten, dass afrikanische Rätsel keinen wesentlich bedeutungsvollen erzieherischen Wert haben. Stattdessen wird die These aufgestellt, dass Rätsel einen wichtigen Beitrag zur vollständigen Teilnahme von Kindern am gesellschaftlichen, kulturellen, politischen sowie wirtschaftlichen Leben afrikanischer Gemeinschaften leisten, besonders durch die Förderung von kritischem Denken und die Weitergabe des Wissens der Eingeborenen.
Resumen TRADICIONES ORALES AFRICANAS: EL VALOR EDUCATIVO DE LAS ADIVINANZAS PARA EL PUEBLO DE LOS HAYA EN EL NOROESTE DE TANZANÍA – Con este trabajo, el autor aboga por una integración de tradiciones orales africanas y de otros elementos de aprendizaje tradicional en los actuales planes de estudios de las escuelas. Al mismo tiempo, hace énfasis en la creciente relevancia que la educación tiene para las comunidades locales. Con este estudio, el autor desafía la posición de aquellos antropólogos sociales y culturales que sostienen que las adivinanzas africanas no tienen ningún valor educativo digno de mención, ante todo presentando el ejemplo de adivinanzas que ha recopilado entre los miembros del pueblo de los haya, uno de los principales grupos étnicos del noroeste de Tanzanía. Por lo contrario, el autor afirma que las adivinanzas promueven en gran medida la participación plena de los niños en la vida social, cultural, política y económica de las comunidades africanas, ante todo porque incentivan el pensamiento crítico y transmiten conocimientos indígenas.
Résumé TRADITIONS ORALES AFRICAINES : LA VALEUR ÉDUCATIVE DES ÉNIGMES CHEZ LES HAYAS DE LA TANZANIE DU NORD-OUEST – Cette étude argumente en faveur de l’intégration des traditions orales africaines et autres éléments de l’apprentissage traditionnel dans le programme d’étude de l’école moderne. Elle contribue ainsi à soutenir la pertinance accrue de l’éducation au sein des communautés locales. En particulier, utilisant l’exemple des énigmes recueillies chez l’un des principaux groupes ethniques de la Tanzanie du Nord-Ouest, le peuple Haya, l’étude présente conteste les vues de ces anthropologues sociaux et culturels qui soutiennent que les énigmes africaines n’ont pas de valeur éducative substantiellement significative. Au lieu de cela, on maintient que les énigmes apportent une contribution importante à la pleine participation des enfants à la vie sociale, culturelle, politique et économique des communautés africaines, spécialement en ce qu’elles favorisent la pensée critique et transmettent les connaissances indigènes.相似文献
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Surapon?TangvarasittichaiEmail author Patcharin?Pingmuanglaew Orathai?Tangvarasittichai 《Indian journal of clinical biochemistry : IJCB》2016,31(4):446-451
Hypertension is the most common cardiovascular risk factor. Lipoprotein(a) [Lp(a)], inflammation, oxidative stress and chronic kidney disease (CKD) exacerbate the response to tissue injury and acts as markers of the vascular disease, especially in glomerulosclerosis. We compared the clinical characteristics of 138 non-diabetes hypertensive women (ndHT) patients with 417 non-diabetes normotensive subjects and tested the association of hypertension with Lp(a), inflammation, CKD and oxidative stress by using multiple logistic regression. BP, BMI, waist circumference, creatinine, Lp(a), inflammation and malondialdehyde levels were significantly higher and CKD state in the ndHT patients (p < 0.05). Multiple logistic regression showed hypertension associated with increased Lp(a), inflammation, ORs and 95 % CIs were 2.52 (1.33, 4.80), 2.75 (1.44, 5.27) after adjusting for their covariates. Elevated serum Lp(a) and inflammation levels concomitants with increased oxidative stress and CKD were the major risk factors associated with hypertension and implications for the increased risk of HT and vascular disease. 相似文献
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We document some basic facts about how liquids behave in the low gravity of outer space and how this poses challenges to space
scientists and engineers who need to design and test systems that handle fluids in outer space while working in the 1-g environment
on Earth.
N Ananthkrishnan is Director, Coral Digital Technologies (P) Ltd, a Bangalore-based company working in the area of multidisciplinary
simulation and system integration of aerospace, naval and surface vehicles, and in the design and development of autonomous
unmanned/micro air vehicles. 相似文献
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IPv4, the workhorse protocol of the currently popular TCP/ IP protocol suite, is fast becoming obsolete. The exponential growth
of the Internet is the main reason that has required the creation of the next generation of Internet Protocol-IPv6. IPv6 is
much more flexible and promises to take care of the address space and security issues in the foreseeable future.
Part 1 of the paper lays the foundation of the various issues involved in designing the Internet Protocol and motivates the
need for an upgraded version of this protocol. 相似文献
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Investigation of the conformational properties of a SAW polymer chain near an impenetrable, non-interacting flat surface showed that the chain at first contracted and orientated itself to slightly parallel when it pulled close to the surface and at last elongated and reoriented itself to slightly perpendicular to the surface at very small distance from the surface. Simulation showed that most of the disappeared configurations were of large size at moderate distance from the surface while they were of small size at very small distance from the surface; and that the mean-square end-to-end distance was much more prone to be influenced by the surface than the mean-square radius of gyration . The orientational correlation between the direction of the longest principal axis of the moment of inertia and end-to-end vector was also discussed. 相似文献