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Ramesh Babu Telugu,Anne Jennifer Prabhu,Nobin Babu Kalappurayil,John Mathai,Birla Roy Gnanamuthu,Marie Therese Manipadam 대한병리학회 2017 Journal of Pathology and Translational Medicine Vol.51 No.3
Background: Inflammatory myofibroblastic tumor is a histopathologically distinctive neoplasm of children and young adults. According to World Health Organization (WHO) classification, inflammatory myofibroblastic tumor is an intermediate-grade tumor, with potential for recurrence and rare metastasis. There are no definite histopathologic, molecular, or cytogenetic features to predict malignant transformation, recurrence, or metastasis. Methods: A 5-year retrospective study of histopathologically diagnosed inflammatory myofibroblastic tumors of various anatomic sites was conducted to correlate anaplastic lymphoma kinase-1 (ALK-1) expression with histological atypia, multicentric origin of tumor, recurrence, and metastasis. Clinical details of all the cases were noted from the clinical work station. Immunohistochemical stains for ALK-1 and other antibodies were performed. Statistical analysis was done using Fisher exact test. Results: A total of 18 cases of inflammatory myofibroblastic tumors were found during the study period, of which 14 were classical. The female-male ratio was 1:1 and the mean age was 23.8 years. Histologically atypical (four cases) and multifocal tumors (three cases, multicentric in origin) were noted. Recurrence was noted in 30% of ALK-1 positive and 37.5% of ALK-1 negative cases, whereas metastasis to the lung, liver, and pelvic bone was noted in the ALK-1 positive group only. Conclusions: Overall, ALK-1 protein was expressed in 55.6% of inflammatory myofibroblastic tumors. There was no statistically significant correlation between ALK-1 expression, tumor type, recurrence and metastasis. However, ALK-1 immunohistochemistry is a useful diagnostic aid in the appropriate clinical and histomorphologic context.
PUBLIC LIBRARY SYSTEM AND SERVICES IN TAMIL NADU : PERFORMANCE APPRAISAL
Babu B. Ramesh,Kumar S. K. Asok Korean Library and Information Science Society 2006 한국도서관정보학회지 Vol.37 No.4
이 논문에서는 인도의 최대주인 Tamil Nadu의 공공도서관시스템의 조직구조에 대해 개관하고 공공도서관의 성장과정에 대해 구체적으로 분석하였다. 아울러 1975년부터 2006년에 걸친 기간을 대상으로 하여 기존자원에 대한 통계데이터와 연차보고서를 바탕으로 공공도서관시스템의 성과를 평가하고 개선점을 제시하였다. This paper presents the organization structure of the Public Library System in Tamil Nadu, the first state in the Indian Republic, and brings out the growth of public libraries in Tamil Nadu after the approval of the library reorganization committee recommendations. Appraises the performance of the Public Library System in Tamil Nadu from 1975 to 2006. An analysis has been made about the nature and adequacy of the existing resources in the public library system in the state of Tamil Nadu, based on the analysis of the statistical data relating to public libraries and their use collected from the annual administration reports of the Directorate of Public Libraries, Government of Tamil Nadu. Based on the analysis and observationsa few suggestions are given for the development of public library system and services in India general and Tamil Nadu in particular.
Improving Forecast Accuracy of Wind Speed Using Wavelet Transform and Neural Networks
Ramesh Babu. N,Arulmozhivarman. P 대한전기학회 2013 Journal of Electrical Engineering & Technology Vol.8 No.3
In this paper a new hybrid forecast method composed of wavelet transform and neural network is proposed to forecast the wind speed more accurately. In the field of wind energy research, accurate forecast of wind speed is a challenging task. This will influence the power system scheduling and the dynamic control of wind turbine. The wind data used here is measured at 15 minute time intervals. The performance is evaluated based on the metrics, namely, mean square error, mean absolute error, sum squared error of the proposed model and compared with the back propagation model. Simulation studies are carried out and it is reported that the proposed model outperforms the compared model based on the metrics used and conclusions were drawn appropriately.
Babu, A. Ramesh,Ramanujam, N. Korean Society of Computational and Applied Mathem 2008 Journal of applied mathematics & informatics Vol.26 No.5
We consider singularly perturbed Boundary Value Problems (BVPs) for third and fourth order Ordinary Differential Equations(ODEs) of convection-diffusion type with discontinuous source term and a small positive parameter multiplying the highest derivative. Because of the type of Boundary Conditions(BCs) imposed on these equations these problems can be transformed into weakly coupled systems. In this system, the first equation does not have the small parameter but the second contains it. In this paper a computational method named as 'An asymptotic finite element method' for solving these systems is presented. In this method we first find an zero order asymptotic approximation to the solution and then the system is decoupled by replacing the first component of the solution by this approximation in the second equation. Then the second equation is independently solved by a fitted mesh Finite Element Method (FEM). Numerical experiments support our theoritical results.
BABU, A. RAMESH,VALANARASU, T. The Korean Society for Computational and Applied M 2019 Journal of applied mathematics & informatics Vol.37 No.5
In this paper, we consider boundary value problem for a weakly coupled system of two singularly perturbed differential equations of convection diffusion type with discontinuous source term. In general, solution of this type of problems exhibits interior and boundary layers. A numerical method based on streamline diffusiom finite element and Shishkin meshes is presented. We derive an error estimate of order $O(N^{-2}\;{\ln}^2\;N$) in the maximum norm with respect to the perturbation parameters. Numerical experiments are also presented to support our theoritical results.
Combining Ability of Diallel Crosses of Bivoltine Silkworm, Bombyx mori L.
Babu M. Ramesh,Chandrashekharaiah Chandrashekharaiah,Lakshmi H.,Prasad J.,Goel A. K. Korean Society of Sericultural Science 2005 International Journal of Industrial Entomology Vol.10 No.1
General and specific combining ability effects of six bivoltine breeds of silkworm (Bombyx mori L.) were evaluated for six quantitative characters through diallel method wherein parents, $F_{1}s$ and reciprocals are involved. The breeds $APS_{11}\;and\;APS_{2}$ were found to be the best general combiners for most of the traits studied. The high estimates of specific combining ability (sca) variance (${\sigma}^{2}s$) compared to general combining ability (gca) variance (${\sigma}^{2}g$) indicated the predominant role of non-additive gene action in the control of all the characters. Positive sca effects for majority of the traits were expressed by the combinations $APS_{13}{\times}APS_6,\;APS_{13}{\times}APS_2,\;APS_{11}{\times}APS_6\;and\;APS_5{\times}APS_2$ out of 15 crosses. Among the 15 reciprocal crosses studied, the combination $APS_8{\times}APS_{13}$ showed positive reciprocal effects for all the six traits. With both the parents $APS_5\;and\;APS_2$ being good general combiners the hybrid $APS_5{\times}APS_2$ showing high sca effects is recommended for commercial use.
Trends in the Growth of Literature on Hepatitis(1984-2003): Quantitative Analysis
Babu, B. Ramesh,Ramakrishnan, J. Korean Library and Information Science Society 2007 한국도서관정보학회지 Vol.38 No.2
이 논문에서는 1984년부터 2003년까지 200년에 걸쳐 MEDLINE과 CINAKL. IPA 등 3개 서지데이터베이스에 수록된 간염에 관한 분야의 문헌의 증가추세를 계량과학적으로 분석하였다. 이 기간 동안MEDLINE은 최대인 75,750건의 레코드를 수록하였으며, CINAHL, IPA의 순이었다. 특정지식영역의 연간문헌증가율은 동일하지 않으며, 연간증가율을 측정하기 위해서는 RGR을 적용하는 것이 아주 적합한 것으로 나타났다. RGR은 감소추세를 보였는데, 다만 1985년과 1997년에 성장률에서 약간의 변동이 있었다. 대학과 기업, 연구기관들은 RGR 및 Dt와 관련한 성과에서 성장추세와 감소추세, 변동추세 등의 결과에서 혼재된 양상을 보여주었다. 간염연구는 논문수와 페이지수의 측면에서 연단위로 RGR과 Dt를 산정했을 때는 다양한 양상을 보여주었다. This paper presents a scientometric analysis of the growth of literature output in the field of Hepatitis covered in three bibliographic databases namely MEDLINE, CINAHL and IPA. The literature covered in three databases for the period 1984-2003 was considered. MEDLINE covered the maximum of 75750 records during the study period 1984 to 2003. This is followed by CINAHL and IPA databases. It is found that the annual growth rate of literature in a particular field of knowledge will not be uniform and in order to measure the rate of growth from year after year, the application of RGR is quite appropriate. The RGR has shown a decreasing trend, with a slight fluctuation of growth rate for the years 1985 and 1997. The output by colleges, universities, corporate sector and research institutions with reference to RGR and Dt has shown mixed results such as increasing trend, decreasing trend and fluctuation trend. Hepatitis research indicates a different picture when the RGR and Dt were calculated by year-wise both in terms of number of papers and number of pages.
Ramesh Babu M.,Lakshmi H.,Prasad J.,Seetharamulu Seetharamulu,Chandrashekharaiah J. Korean Society of Sericultural Science 2005 International Journal of Industrial Entomology Vol.11 No.1
Successful silkworm breeding attempts were made at Andhra Pradesh State Sericulture Research and Development Institute (APSSRDI), Hindupur, India in developing productive bivoltine silkworm hybrids. One hundred hybrid combinations involving 10 parents (five each of oval and peanut) were evaluated in complete diallel pattern and identified the combination APS$_{83}$ $\times$ APS$_{102}$ as most promising. This hybrid showed economic merit for the characters fecundity (524 eggs/laying), pupation percentage (96.0$\%$), cocoon yield per 10,000 larvae by weight (19.0 kg), cocoon weight (1.85 g), shell weight (41.7 cg), shell ratio (22.5$\%$), filament length (1,004 m), reelability (88.4$\%$), raw silk recovery (18.4$\%$) and neatness (92 point) over the control hybrid APS$_{9}$ $\times$ APS$_{8}$ The breeding process and identification of APS$_{83}$ $\times$ APS$_{102}$ is discussed in the paper.
Babu, A. Ramesh,Ramanujam, N. The Korean Society for Computational and Applied M 2010 Journal of applied mathematics & informatics Vol.28 No.1
In this article, we consider singularly perturbed Boundary Value Problems(BVPs) for second order Ordinary Differential Equations (ODEs) with Neumann boundary condition and discontinuous source term. A parameter-uniform error bound for the solution is established using the Streamline-Diffusion Finite Element Method (SDFEM) on a piecewise uniform meshes. We prove that the method is almost second order of convergence in the maximum norm, independently of the perturbation parameter. Further we derive superconvergence results for scaled derivatives of solution of the same problem. Numerical results are provided to substantiate the theoretical results.