Design and Implementation of a Secure Communication Protocol

The main object of this paper is to present a mutual authentication protocol that guarantees security, integrity and authenticity of messages, transferred over a network system. In this paper a symmetric key cryptosystem, that satisfies all the above requirements, is developed using theorems of J.R. Chen, I.M. Vinogradov and Fermat and the decimal expansion of an irrational number

Class, race and ethnicity and information avoidance among cancer survivors

Background: Information seeking may increase cancer survivors' ability to make decisions and cope with the disease, but many also avoid cancer information after diagnosis. The social determinants and subsequent communication barriers that lead to avoidance have not been explored. The purpose of this study is to examine the influence of social determinants on information avoidance among cancer survivors. Methods: We examined how health information avoidance is associated with structural and individual factors in a mail-based survey of 519 cancer survivors. Factor analysis was conducted to determine barriers to obtaining cancer information, and multivariable logistic regression models by gender were run to analyze social determinants of avoidance from an intersectional approach. Results: Participants who were younger, female, had greater debt and lower income, and had difficulty finding suitable information were more likely to avoid information. The probability of information avoidance increased when survivors reported barriers to information use or comprehension. Conclusion: These results indicate that survivors' information avoidance may be driven, in part, by social determinants, particularly among those at the intersection of multiple social status categories. Customized strategies are needed that maximize the likelihood that information will be used by vulnerable groups such as those from a lower socioeconomic position

Dimer and N\'eel order-parameter fluctuations in the spin-fluid phase of the s=1/2 spin chain with first and second neighbor couplings

The dynamical properties at T=0 of the one-dimensional (1D) s=1/2 nearest-neighbor (nn) XXZ model with an additional isotropic next-nearest-neighbor (nnn) coupling are investigated by means of the recursion method in combination with techniques of continued-fraction analysis. The focus is on the dynamic structure factors S_{zz}(q,\omega) and S_{DD}(q,\omega), which describe (for q=\pi) the fluctuations of the N\'eel and dimer order parameters, respectively. We calculate (via weak-coupling continued-fraction analysis) the dependence on the exchange constants of the infrared exponent, the renormalized bandwidth of spinon excitations, and the spectral-weight distribution in S_{zz}(\pi,\omega) and S_{DD}(\pi,\omega), all in the spin-fluid phase, which is realized for planar $nn$ anisotropy and sufficiently weak nnn coupling. For some parameter values we find a discrete branch of excitations above the spinon continuum. They contribute to S_{zz}(q,\omega) but not to S_{DD}(q,\omega).Comment: RevTex file (7 pages), 8 figures (uuencoded ps file) available from author

A 'Community Fit' Community-Based Participatory Research Program for Family Health, Happiness, and Harmony: Design and Implementation

published_or_final_versio

Wire less Power Theft Monitoring Using GSM

Developing countries faces widespread theft of power from government owned power utilities. So the aim of this project is to display the power theft area of the distribution transformer and raise an alarm. Here for the practical purpose transformers, source energy meter, household load, energy meter are used for measuring real loads along with wired link.The power theft area of the distribution transformer at substation is obtained by calculating the real consuming power by the energy meter and the main power at the distribution transformer. That means the real consumption of all users must be equals to the total power delivered by the transformer. The difference must be analyzed by the controller by calculating both powers. If the difference is within 2 to 3% variation (transmission losses are concerned) the system raises no error otherwise it will generates error with an alarm and sends message along with transformer location information to the authority through GSM modem and displays in the corresponding substation along with alarm

Comparative assessment of floristic structure, diversity and regeneration status of tropical rain forests of Western Ghats of Karnataka, India

Tropical forests are one of the richest landscapes in terms of its richness, diversity and endemicity. The present study was carried out in the Central Western Ghats: one of the hottest hotspot of biodiversity. The aim of the study was to compare floristic diversity in tropical wet evergreen forest between northern and southern parts of Western Ghats of Karnataka. Kodagu district in southern part and Uttara Kannada district in northern part was chosen to assess the same, as these two districts cover highest forest cover in the Western Ghats of Karnataka. In each district all the evergreen forests were sampled with 1000 m X 5 belt transacts. Totally 22 such samplings were done both southern and northern part of Western Ghats. In each of these transacts all the trees measuring e” 30 gbh were enumerated and botanically identified to the species level and the same was used for computation of diversity indices. The richness and diversity was comparatively higher in southern part compared to northern part of Western Ghats, where as the richness of threatened tree species was comparatively higher in northern part of Western Ghats. In addition to the species richness and diversity, the paper also deals with the dominant tree species and families in both the region

Study on the reproductive behavior among women of rural areas of Pondicherry

Background: The fertility rate in India is declining and it is necessary to know the factors responsible for such decline in different states. It was decided to study reproductive behavior of women contributing to decline in fertility in Pondicherry. The aim and objective of this study is known the reproductive behavior of women in the rural areas on Pondicherry.Methods: Sample of 300 married women aged between 30 and 60 years were selected randomly from village belonging to Katerikuppam PHC and the data collected using the pre tested semi open ended questionnaires by interviewing the subjects at their doorsteps during September to November 2014.Results: The mean age of the subjects was 41.5 ± 9.5 years. There were 793 total pregnancies and live births were 701 and abortions accounted for ten percent and still births were 9 in number. The mean number of pregnancies and live births were 2.6 ± 1.1 and 2.3 ± 1.0 per women respectively. The mean age at menarche, marriage and first pregnancy were 14.3 ± 1.4, 19.6 ± 3.1 and 21.1 ± 3.1 years respectively. The mean number of pregnancies were declined from currently older age to the lower age of the subjects and found to be statistically significant.Conclusions: The mean age at marriage and first pregnancy is increasing and the differences in the mean number of pregnancies and live births are showing declining trend.

Erythrocyte aldose reductase activity and sorbitol levels in diabetic retinopathy

PurposeActivation of polyol pathway due to increased aldose reductase (ALR2) activity has been implicated in the development of diabetic complications including diabetic retinopathy (DR), a leading cause of blindness. However, the relationship between hyperglycemia-induced activation of polyol pathway in retina and DR is still uncertain. We investigated the relationship between ALR2 levels and human DR by measuring ALR2 activity and its product, sorbitol, in erythrocytes.MethodsWe enrolled 362 type 2 diabetic subjects (T2D) with and without DR and 66 normal subjects in this clinical case-control study. Clinical evaluation of DR in T2D patients was done by fundus examination. ALR2 activity and sorbitol levels along with glucose and glycosylated hemoglobin (HbA1C) levels in erythrocytes were determined.ResultsT2D patients with DR showed significantly higher specific activity of ALR2 as compared to T2D patients without DR. Elevated levels of sorbitol in T2D patients with DR, as compared to T2D patients without DR, corroborated the increased ALR2 activity in erythrocytes of DR patients. However, the increased ALR2 activity was not significantly associated with diabetes duration, age, and HbA1C in both the DR group and total T2D subjects.ConclusionsLevels of ALR2 activity as well as sorbitol in erythrocytes may have value as a quantitative trait to be included among other markers to establish a risk profile for development of DR