Evaluation of common risk factors of acne in teenagers in Batticaloa district

Acne, or acne vulgaris, is a common skin problem that starts when oil and dead skin cells obstruct the pores. It is leads to psychological dissatisfaction of personality specially among teenagers and adolescents all over the world, including Sri Lanka. In the recent years concern raised regarding acne without gender difference, because people like to be pretty and attractive in the society. Furthermore, majority of the school students are worried about the impact of acne as they are prone to suffer by acne and they naturally feel to be pretty because of their young stage and psycho social believes and thoughts. Therefore, this study was intended to recognize and evaluate the risk factors of acne among school teenagers of Batticaloa district. Respondents of the study included the students from four leading schools in the Batticaloa during the study period. Data collected by interviewer administered questionnaire with the permission of relevant principals of the school. Analysis of data performed by statistical software (SPSS 16.0) and p value <0.05 was considered as significant for all analysis. Majority of participant were Tamil (141=73.44%) ethnic group and most of them resided at urban 136 (70.83%) local authority. The skin type of more than half of the respondents was oily. Onset age of acne lesions for many respondents (39=20.31%) was 16 years. Almost most of them (187=97.40%) had the acne lesion on the face. Acne marks significantly (X2=38.342, p=0.000) leads to major psychological worries on males compared to female students. Food habit with oily meals had significant association to the development of acne, (X2=58.521, p=0.000). Food habit, Body weight, types of skin were identified as the most significant risk factors. Marks of acne is the very serious end results and which has the significant impact on formation of psychological problems among the students specifically in males

Palm print Authentication Using PCA Technique

Abstract: Palmprint recognition algorithms are useful in a wide range of applications like security control, crime investigation, and entrance control in buildings, access control in computer system, access control at automatic teller machines, passport verification, identifying the individuals in a given databases. Personal authentication using palmprint is a promising approach suggested by various researchers. However, most of the techniques suffer from high computational requirements and cost. This paper proposes an approach that makes use PCA (Principal Component Analysis) with reduced dimensionality based feature extraction and the use of Eigen palmprints in the experimentation. The PCA based features significantly minimize the noise, minimizes the memory usage and computational time of authentication. The proposed approach provides better performances in terms of sensitivity, specificity and accuracy. I

Nonlinear Array Layouts for Hierarchical Memory Systems

Programming languages that provide multidimensional arrays and a flat linear model of memory must implement a mapping between these two domains to order array elements in memory. This layout function is fixed at language definition time and constitutes an invisible, non-programmable array attribute. In reality, modern memory systems are architecturally hierarchical rather than flat, with substantial differences in performance among different levels of the hierarchy. This mismatch between the model and the true architecture of memory systems can result in low locality of reference and poor performance. Some of this loss in performance can be recovered by re-ordering computations using transformations such as loop tiling. We explore nonlinear array layout functions as an additional means of improving locality of reference. For a benchmark suite composed of dense matrix kernels, we show by timing and simulation that two specific layouts (4D and Morton) have low implementation costs (2--5%..

Identification and management of Snake Bite in Asia: A narrative review

Snake bites are an important cause of illness and deaths in the rural population in tropical, subtropical and southeast Asian countries. There are more than 3000 species of snakes found all over the world of which around 300 species are found in India. In India, most of snake bite deaths occur due to delayed arrival to treatment centers. The purpose of the present review article is to explore the various species of snakes, their toxicology, clinical manifestations, and management. In addition, various ways to avoid snake bites and early approaches to government centers rather than private centers for the availability of Anti-snake venom have been discussed in this article. Rapid diagnostic test for the identification of species is available in selective centers only and treatment mainly depends on the administration of anti-snake venom. In addition, proper community education and strong health-care policy will reduce the morbidity and mortality due to snake bites