98 research outputs found
Counting integral points on symmetric varieties with applications to arithmetic statistics
In this article, we combine Bhargava's geometry-of-numbers methods with the
dynamical point-counting methods of Eskin--McMullen and Benoist--Oh to develop
a new technique for counting integral points on symmetric varieties lying
within fundamental domains for coregular representations. As applications, we
study the distribution of the -torsion subgroup of the class group in thin
families of cubic number fields, as well as the distribution of the -Selmer
groups in thin families of elliptic curves over . For example, our
results suggest that the existence of a generator of the ring of integers with
small norm has an increasing effect on the average size of the -torsion
subgroup of the class group, relative to the Cohen--Lenstra predictions.Comment: 39 pages, comments welcome
Perceived effectiveness of training and development: a case study in stc technologies pvt ltd., chennai
Training is the act of increasing the knowledge and skill of an employee for doing
particular job .The training is to acquire new skill, technical knowledge, problemsolving,
etc. Training improves the performance of employees on present jobs and
prepares them for taking up new assignments in the future. Training also helps in the
development of the employees. The main objective of the study is to measure the
effectiveness of the training in the organization and its impact on employee job
performance in the organisation. For collecting the required primary data, a structured
questionnaire, with multiple choice and close-ended questions was administered to 60
employees in the organisation through the simple random sampling method. In this
study Chi-Square test, Correlation and Anova have been used to interpret the data
collected. Based on the research findings the researcher offered suitable suggestions for
improving the employee training and development in the organization
Perceived effectiveness of training and development: a case study in stc technologies pvt ltd., chennai
Training is the act of increasing the knowledge and skill of an employee for doing
particular job .The training is to acquire new skill, technical knowledge, problemsolving,
etc. Training improves the performance of employees on present jobs and
prepares them for taking up new assignments in the future. Training also helps in the
development of the employees. The main objective of the study is to measure the
effectiveness of the training in the organization and its impact on employee job
performance in the organisation. For collecting the required primary data, a structured
questionnaire, with multiple choice and close-ended questions was administered to 60
employees in the organisation through the simple random sampling method. In this
study Chi-Square test, Correlation and Anova have been used to interpret the data
collected. Based on the research findings the researcher offered suitable suggestions for
improving the employee training and development in the organization
Privacy Aware Experiments without Cookies
Consider two brands that want to jointly test alternate web experiences for
their customers with an A/B test. Such collaborative tests are today enabled
using \textit{third-party cookies}, where each brand has information on the
identity of visitors to another website. With the imminent elimination of
third-party cookies, such A/B tests will become untenable. We propose a
two-stage experimental design, where the two brands only need to agree on
high-level aggregate parameters of the experiment to test the alternate
experiences. Our design respects the privacy of customers. We propose an
estimater of the Average Treatment Effect (ATE), show that it is unbiased and
theoretically compute its variance. Our demonstration describes how a marketer
for a brand can design such an experiment and analyze the results. On real and
simulated data, we show that the approach provides valid estimate of the ATE
with low variance and is robust to the proportion of visitors overlapping
across the brands.Comment: Technical repor
Cyclodextrin-Based Nanohydrogels Containing Polyamidoamine Units: A New Dexamethasone Delivery System for Inflammatory Diseases
Glucocorticoids are widely prescribed in treatment of rheumatoid arthritis, asthma, systemic lupus erythematosus, lymphoid neoplasia, skin and eye inflammations. However, well-documented adverse effects offset their therapeutic advantages. In this work, novel nano-hydrogels for the sustained delivery of dexamethasone were designed to increase both bioavailability and duration of the administered drug and reducing the therapeutic dose. Hydrogels are soft materials consisting of water-swollen cross-linked polymers to which the insertion of cyclodextrin (CD) moieties adds hydrophobic drug-complexing sites. Polyamidoamines (PAAs) are biocompatible and biodegradable polymers apt to create CD moieties in hydrogels. In this work, β or γ-CD/PAA nanogels have been developed. In vitro studies showed that a pretreatment for 24–48 h with dexamethasone-loaded, β-CD/PAA nanogel (nanodexa) inhibits adhesion of Jurkat cells to human umbilical vein endothelial cells (HUVEC) in conditions mimicking inflammation. This inhibitory effect was faster and higher than that displayed by free dexamethasone. Moreover, nanodexa inhibited COX-2 expression induced by PMA+A23187 in Jurkat cells after 24–48 h incubation in the 10−8–10−5 M concentration range, while dexamethasone was effective only at 10−5 M after 48 h treatment. Hence, the novel nanogel-dexamethasone formulation combines faster action with lower doses, suggesting the potential for being more manageable than the free drug, reducing its adverse side effects
Accuracy of Targeting under the Rural Employment Guarantee Programme:Comparison between West Bengal and Rest of India
Discovery and Validation of a Three-Cytokine Plasma Signature as a Biomarker for Diagnosis of Pediatric Tuberculosis
Epidemiology and Genetic Epidemiology of the Liver Function Test Proteins
The liver function test (LFT) is among the most commonly used clinical investigations to assess hepatic function, severity of liver diseases and the effect of therapies, as well as to detect drug-induced liver injury (DILI)
Predictors of unfavorable responses to therapy in rifampicin-sensitive pulmonary tuberculosis using an integrated approach of radiological presentation and sputum mycobacterial burden
INTRODUCTION: Despite the exalted status of sputum mycobacterial load for gauging pulmonary tuberculosis treatment and progress, Chest X-rays supplement valuable information for taking instantaneous therapeutic decisions, especially during the COVID-19 pandemic. Even though literature on individual parameters is overwhelming, few studies have explored the interaction between radiographic parameters denoting severity with mycobacterial burden signifying infectivity. By using a sophisticated approach of integrating Chest X-ray parameters with sputum mycobacterial characteristics, evaluated at all the three crucial time points of TB treatment namely pre-treatment, end of intensive phase and completion of treatment, utilizing the interactive Cox Proportional Hazards model, we aimed to precisely deduce predictors of unfavorable response to TB treatment. MATERIALS AND METHOD: We extracted de-identified data from well characterized clinical trial cohorts that recruited rifampicin-sensitive Pulmonary TB patients without any comorbidities, taking their first spell of anti-tuberculosis therapy under supervision and meticulous follow up for 24 months post treatment completion, to accurately predict TB outcomes. Radiographic data independently obtained, interpreted by two experienced pulmonologists was collated with demographic details and, sputum smear and culture grades of participants by an independent statistician and analyzed using the Cox Proportional Hazards model, to not only adjust for confounding factors including treatment effect, but also explore the interaction between radiological and bacteriological parameters for better therapeutic application. RESULTS: Of 667 TB patients with data available, cavitation, extent of involvement, lower zone involvement, smear and culture grade at baseline were significant parameters predisposing to an unfavorable TB treatment outcome in the univariate analysis. Reduction in radiological lesions in Chest X-ray by at least 50% at 2 months and 75% at the end of treatment helped in averting unfavorable responses. Smear and Culture conversion at the end of 2 months was highly significant as a predictor (p2 zones, were 3.05 (95% CI: 1.12–8.23) and 1.92 (95% CI: 0.72–5.08) respectively. Patients without cavitation, zonal involvement 2 zones and 3+ smear grade individually and independently forecasted a poorer TB outcome. The interaction model revealed that Zonal involvement confined to 2 zones, without a cavity and smear grade up to 2+, constituting “minimal disease”, had a better prognosis. Radiological clearance >50% along with smear conversion at the end of intensive phase of treatment, observed to be a reasonable alternative to culture conversion in predicting a successful outcome. These parameters may potentially take up key positions as stratification factors for future trials contemplating on shorter TB regimens
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