Angle of Repose of Digested Oil Palm Fruit Mash and Pulp on Steel

Nwankwojike, B. Nduka
Department of Mechanical Engineering, Michael Okpara University of Agriculture, Umudike, Nigeria.


Abstract: The angles of repose of digested palm fruit mash and pulp on mild and stainless steel were determined in this study because of it important in the design and fabrication of palm nut-pulp separating machine proposed for total elimination of nut breakage and its associated losses in all mechanized palm fruit processing. The experimental plan was based on completely randomized design (CRD) while the data obtained were tested and compared using Analysis of variance (ANOVA). Results showed that the angle of repose of digested palm fruit mash on both mild and stainless steel is same and equal to 46.010 while that of digested palm fruit pulp on these two structural materials is 47.910. ANOVA results revealed that there are no significant differences (at α = 0.05) in angles of repose of the test specimens obtained from the dura and tenera palm fruits and also that the values of this parameter obtained as per each test is independent of the weight of the specimen used.

Keywords: Angle of repose, mild and stainless steel, nut breakage, nut- pulp separating machine, pressing

Linguistic Display of Status of System to Support Distribution Sub-Station Operator

M.S.Giridhar, Sreenivasa Institute of Technology and Management Studies, District Chittoor, A.P, INDIA
S.Sivanagaraju, Department of Electrical Engineering, J.N.T.U.College of Engineering, Kakinada, A.P, INDIA


Abstract: This paper presents a new method of analyzing the distribution system under uncertain variations in the loads. The measured load variation data collected from a practical radial distribution system have been modeled as Type-2 Fuzzy Sets, which represents the uncertain variations in the load. The developed Type-2 membership function models have been validated using Mambdani-FIS by computing the centroid values of voltages at each bus (Consequent) for the centroid values of Type-2 fuzzy set modeled as load at each bus (Antecedent) and these values are compared with voltages obtained by normal power flow solution for the centroid values of the load. Further the authors proposes a new Linguistic Display Aiding Tool for the Substation Operator, by displaying the status of Voltage Drops, Line Flows in each branches of the Feeder and Laterals Linguistically where the substation operator gets the display of the status in his local language. For which the authors uses a similarity measuring method between the standard type-2 fuzzy sets labeled with linguistic words and the Type-2 fuzzy sets of voltages at each bus or the voltage drops in each branches of the laterals or the losses in each line. The measures of uncertainty such as centroid, cardinality, fuzziness, Skewness and Variance of the IT2 FS of loads and voltages are computed. These are useful to compute two types of uncertainties associated with a word: intra-personal uncertainty and inter-personal uncertainty.

Keywords: Transformer-load-model, Interval Type-2 Fuzzy set, uncertainty, load duration curve, fuzzy Inference System, Similarity measure of Uncertainty.

DEVELOPING SEMANTIC RICH WEB SEARCH ENGINE

Mr. Suneet Joshi , Mr. Ashish Jain , Dr Binod Kumar
Professor in Computer Sc. Dept. at Medi-Caps Institute of Science & Tech. , Indore


Abstract: The amount and variety of information on the World Wide Web (Web) is increasing in an unstructured way. This makes navigation and retrieval of information a difficult and sometimes frustrating process. For instance, Web search engines are becoming less effective as the documents available on the Web proliferate and users' queries return hundreds of links. Users may become lost or frustrated because navigation is unintuitive and semantic meanings are not used to evaluate the relevance of the links, most of which may be unrelated to what the user wants. Gathering useful and interesting information from the Web or discovering knowledge from hypertext data is a problem that may be solved by implementing measures to make Web information understandable by a Web search engine or other types of software [8]. This project discusses about to classify web search data according to the need of web search engine user. Classification leads’ the sorting, indexing, combining different results, categorized the output data. More over it provide a help to write query for the search engine.

Keywords: www, web search engine, sorting, indexing, query

An analysis of the attacks on public key RSA cryptosystem with the proposed algorithm.

Varun Shukla
Research Scholar, RKDF-IST, RGPV,BHOPAL
Abhishek Choubey,
Head of Department of Electronics and Communication,RKDF-IST,RGPV, BHOPAL


Abstract: The RSA is widely used public-key cryptosystem. RSA is intensively used for encryption methods and digital signature. It is purposely used in securing e-commerce and e-mail, providing authenticity of e- documents. It can be said that Internet security depends prominently on the security of the RSA cryptosystem. Since its discovery, the RSA cryptosystem has been extensively analysed for vulnerabilities. Years of cryptanalysis of RSA have given us a broad insight into its properties and provided valuable guidelines to us for proper use and implementation in different aspects. In this paper we propose an analysis of the main methods used in attacks on the RSA cryptosystem together with the new possible attack. Our focus is based on the underlying mathematical function.

Keywords: Plaintext, RSA, Secure Sockets Layer (SSL), Chinese remainder theorem (CRT), Elliptic Curve

Read complete Febuary 2012