Trust Model for Optimized Cloud Services

Cloud computing with its inherent advantages draws attention for business critical applications, but concurrently expects high level of trust in cloud service providers. Reputation-based trust is emerging as a good choice to model trust of cloud service providers based on available evidence. Many existing reputation based systems either ignore or give less importance to uncertainty linked with the evidence. In this paper, we propose an uncertainty model and define our approach to compute opinion for cloud service providers. Using subjective logic operators along with the computed opinion values, we propose mechanisms to calculate the reputation of cloud service providers. We evaluate and compare our proposed model with existing reputation models

Impacts of leaf extract of Catharanthus roseus (L.) on seed mycoflora of soybean

Present research communication deals with study impact of Catharanthus roseus (L.) leaf extract on seed borne fungi of soybean seeds.&nbsp

SYNTHESIS AND EVALUATION OF ANTIMICROBIAL ACTIVITY OF QUINAZOLINONE DERIVATIVES

Objective: The present study aims to synthesis and evaluation of antimicrobial activity of quinazolinone derivatives. Methods: Methyl anthranilate react with acetyl chloride in ethanol gives methyl-2 acetamido benzoate (1) which on reaction with hydrazine hydrate gives 3-amino-2 methyl 4-(3H)-quinazolinone.(2) The amino group of synthesized quinazolinone with substituted acid chloride which gives 3-Chloroacetyl amino-2-methyl-4-quinazolinone (3) which on condensation with various primary amines gives 2-(2-methyl-4-oxo-4H-quinazoline-3yl-amino)-N-substituted acetamide (4a-4j). Results: The reaction sequence involves microwave-induced preparation of methyl-2 acetamido benzoate (1) from reaction of Methyl anthranilate react with acetyl chloride in ethanol. Further reaction with hydrazine hydrate gives 3-amino-2 methyl 4-(3H)-quinazolinone. (2) The amino group of synthesized quinazolinone with substituted acid chloride which gives 3-Chloroacetyl amino-2-methyl-4-quinazolinone (3) which on condensation with various primary amines gives 2-(2-methyl-4-oxo-4H-quinazoline-3yl-amino)-N-substituted acetamide (4a-4j). Which were characterized by IR and 1HNMR spectral data. Conclusion: All the synthesized compounds were screened for antimicrobial activity by Broth dilution method. Most of the derivatives showed good antimicrobial activity against Gram-Positive and Gram-negative bacteria

Covering energy of posets and its bounds

summary:The concept of covering energy of a poset is known and its McClelland type bounds are available in the literature. In this paper, we establish formulas for the covering energy of a crown with $2n$ elements and a fence with $n$ elements. A lower bound for the largest eigenvalue of a poset is established. Using this lower bound, we improve the McClelland type bounds for the covering energy for some special classes of posets

NUMERICAL ANALYSIS OF A HEAT SINK WITH DIMPLES

In this paper, a numerical simulation is carried out to analyse the heat transfer performance of copper channel. COMSOLMULTIPHYSICS commercial software is used for the analysis. The material chosen for the channel is copper because of its good thermal properties. A channel with dimples on its base is chosen for the analysis. The heat transfer of the microchannel is found to increase with the use of dimples.Â

Control of fungi associated with green gram seeds by using Trichoderma species

In the recent years, the biological control has received a worldwide attention and is being integrated effectively with other pesticides. Moreover, in the context of environmental pollution the use of biological agents is considered quite safe. Three Trichoderma species viz. T. viride, T. harzionum and Trichoderma sp. (Local) were evaluated against Aspergillus niger, A. flavus, Alternaria tenuis, Fusarium oxysporium, Penicillium citrinum, Drechslera longirostrata and Fusarium solani. All the Trichoderma species were effective against above pathogens but Trichoderma (Local) proved to be superior for inhibition of the above pathogen as compared to other Trichoderma species

Mycoflora associated with Pigeon pea and Chickpea

Pigeonpea (Cajanu. cajan.) and Chick Pea (Cicer arietinum) are major pulse crops grown in India. The seed mycoflora was screened by using agar plate method. seeds of varieties of these pulse crops was used in the study and results were obtained from untreated and treated seeds. The untreated seeds were found to be associated with highest percent incidence of mycoflora. In case of untreated seeds the percent incidence of Aspergillus flavus (30%) was the highest followed by     A. niger (25%), Penicillium notatum (20 %), Cladosporium herbarum (18%), where as all other fungi were within the range of (3 to 15%)