Current Issue : January - March Volume : 2013 Issue Number : 1 Articles : 6 Articles
This paper presents an efficient texture synthesis based on wavelet packet tree TSWPT. It has\r\nthe advantage of using a multiresolution representation with a greater diversity of bases functions\r\nfor the nonlinear time series applications such as fractal images. The input image is decomposed\r\ninto wavelet packet coefficients, which are rearranged and organized to form hierarchical trees\r\ncalled wavelet packet trees. A 2-step matching, that is, coarse matching based on low-frequency\r\nwavelet packet coefficients followed by fine matching based on middle-high-frequency wavelet\r\npacket coefficients, is proposed for texture synthesis. Experimental results show that the TSWPT\r\nalgorithm is preferable, especially in terms of computation time....
Planned mentoring programs have flourished as one possible solution to the problems affecting Youths/children. Proponents of mentoring programs hypothesize that mentoring programs could be part of the answer to the problems of children; however, little research has been conducted evaluating the effectiveness of mentoring programs, despite the generally accepted belief that only positive effects can result from their implementation. The present study examines the impact of mentoring on the general development of students of Government Comprehensive Secondary School Bwari, Federal Capital Territory Abuja, Nigeria. Three hundred and nine (309-181 male and 128 female) students completed the questionnaires. They were asked to indicate their opinion on how the mentoring exercise has imparted on their general development. The validity of the questionnaire was approved by three experts in the field of educational Guidance and Counseling. The Cronbach’s alpha reliability coefficients are 0.78, 0.79 and 0.78 for cognitive development, affective development and psychomotor development, respectively. Percentage analysis showed that 67% of the students agree that the schools’ mentoring program has positive impact on their general development. The chi-square analyses indicate no significant difference between male and female students’ opinions on cognitive development, affective development and psychomotor development of the students. Interviews also show that there is an improvement of the students’ general development due to the mentoring exercise. Teachers should go extra mile in doing all they can towards the overall development of the students as they are the future Nigerians we hope to trust....
We introduce and study a class of a system of random set-valued variational inclusion problems.\r\nSome conditions for the existence of solutions of such problems are provided, when the operators\r\nare contained in the classes of generalized monotone operators, so-called A, m, ?-monotone operator.\r\nFurther, the stability of the iterative algorithm for finding a solution of the considered problem\r\nis also discussed....
Based on the recent work by Censor and Segal 2009 J. Convex Anal.16, and inspired by Moudafi\r\n2010 Inverse Problems 26, we modify the algorithm of demicontractive operators proposed\r\nby Moudafi and study the modified algorithm for the class of firmly pseudodemicontractive\r\noperators to solve the split common fixed-point problem in a Hilbert space.We also give the strong\r\nconvergence theorem under some appropriate conditions. Our work improves and/or develops\r\nthe work of Moudafi, Censor and Segal, and other results....
Geometrical construction is an aspect that was examined in every general examination like the West African School Certificate Examination (WAEC). The consistent poor performance of students in these examinations leaves the teachers searching for a way out, hence this study. In this study the use of Inductive Inquiry model is made in the teaching of Geometrical Constructions at senior secondary school level. The discussion includes background information and details on the use of Inductive Inquiry models. One hundred (100) students of Government Secondary School, Bwari, Federal Capital Territory Abuja, Nigeria is the subjects. Majority of these students are in the science class. Before the lesson geometrical constructions, the students were given pre-test, using questions from past West African School Certificate Examination (WAEC) question papers to assess the students’ knowledge of this topic. The pre-test items were drawn in such a way that the first four levels of Bloom’s Taxonomy: knowledge, comprehension, application, and analysis would be tested. An assessment of students’ achievement on geometrical constructions before and after the lesson using Inductive Inquiry model on the topic was done. Other questions were also included asking students for self-report on the preferred learning style and their confidence in solving problems bothering on Geometrical Constructions. Students’ responses to the survey questions (pre and post), to assert their feelings about the Inductive Inquiry model based lesson was analyzed using a one-way analysis of variance (ANOVA). Survey results show that not all students are satisfied with the Inductive Inquiry model based lesson; though they affirmed it offered better interaction with their teacher. However, the test results show that the students who received the Inductive Inquiry model based lesson did better than those students who received normal lesson....
Objective: At present, there are three types of\r\nfusion operators for wavelet image fusion: pixel,\r\narea and region. Pixel operators can quickly get\r\na fused image, but the image can be blurred.\r\nArea operators consider the neighboring gray\r\nvalue, which can reduce the edge''s sensitivity\r\nand the fused image has better vision\r\ncharacteristics. Region operators should operate\r\nimage segment to source image. Though it can\r\nobtain an image with the best vision\r\ncharacteristics, the speed is very slow, so it is\r\nnot suitable for medical image fusion, as\r\nmedical image fusion should consider the time\r\ncost. So the aim of the study is to find a proper\r\nfusion operator for medical image fusion that\r\nconsiders not only the time cost but also the\r\nquality of the fused image.\r\nMethods: By analysis of the three fusion\r\noperators, a new fusion algorithm based on\r\nwavelet transform was proposed: low frequency\r\nsub-band based on window neighborhood\r\nentropy larger and high frequency sub-band\r\nbased on window standard deviation larger.\r\nWhat''s more, in order to ensure the consistency\r\nof the fusion image data, it was tested using the\r\nconsistency validation method.\r\nResults: The algorithm was validated by the\r\nCT/PET images. For each image, bior3.9 was\r\nused to perform 4 levels of decomposition, and\r\nsubjective and objective evaluation methods\r\nwere combined to evaluate the fused image. It\r\nwas easy to see the level 4 decomposition had\r\nthe best performance.\r\nConclusion: Experimental results show this\r\nalgorithm can make full use of the correlation\r\nbetween adjacent pixels, and can extract useful\r\ndetail information from the source images: the\r\noutline of the image from CT and the high light\r\nspot from PET....
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