CLUSTER HEAD ELECTION MECHANISM-BASED ON FUZZY LOGIC (CHEF) WITH TDMA IN WSN

Wireless sensor networks (WSN) are being used for huge range of applications where the traditional infrastructure based network is mostly infeasible. The most challenging aspect of WSN is that they are energy resource-constrained and that energy cannot be replenish. the wireless sensor network of power limited sensing devices called sensor deployed in a region to sense various types physical information from the environment, when these sensors sense and transmit data to other sensors present in the network, even the cluster head is elected according to check their residual energy considerable amount of energy will drain automatically to overcome this drawback by considering the protocol a fuzzy logic approach is used to elect the cluster head based on three descriptors-energy, centrality & distance and second CH is elected according to TDMA to overcome the data lost during energy drain occur in the CH .NS-2 simulation shows that proposed protocol provides higher energy efficiency. This paper proposes the mechanism or device is capable of utilizing its own system of control simply called as self-configurable clustering mechanism to detect the disordered CHs and replace them with other nodes. And results have been derived from simulator ns-2 to show the better performance

SECURE ROUTE DISCOVERY FOR DYNAMIC SOURCE ROUTING IN MANETs

Mobile ad hoc networks (MANETs) are collections of wireless mobile devices with restricted broadcast range and resources and no fixed infrastructure. Communication is achieved by communicating data along suitable routes that are dynamically discovered and maintained through association between the nodes. Discovery of such routes is a major task both from good organization and security points of view. Recently a security model tailored to the specific requirements of MANETs. A novel route discovery algorithm called endairA is also proposed together with a claimed security proof within the same model. In this paper we show the security proof for the route discovery algorithm endairA is malfunctioning and moreover this algorithm is vulnerable to a hidden channel attack. We also analyze the security framework that is used for route discovery and argue the compos ability is an essential feature for ubiquitous applications. We conclude by discussing some of the major security challenges for route discovery in MANETs

Detecting the Anti-Social Activity on Twitter using EGBDT with BCM

The rise of social media and its consequences is a hot topic on research platforms. Twitter has drawn the attention of the research community in recent years due to various qualities it possesses. They include Twitter's open nature, which, unlike other platforms, allows visitors to see posts posted by Twitter users without having to register. In twitter the sentiment analysis of tweets are used for detecting the anti-social activity event which is one of the challenging tasks in existing works. There are many classification algorithms are used to detect the anti-social activities but they obtains less accuracy. The EGBDT (Enhanced Gradient-Boosted Decision Tree) is used to optimize the best features from the NSD dataset and it is given as input to BCM (Bayesian Certainty Method) for detecting the anti-social activities. In this work, tweets from NSD dataset are used for analyzing the sentiment polarity i.e. positive or negative. The efficiency of the proposed work is compared with SVM, KNN and C4.5. From this analysis the proposed EGBDT and BCM obtained better results than other techniques

A pilot study on willingness to participate in future preventive HIV vaccine trials

Background & objectives: In India, phase-I human clinical trials for a preventive HIV vaccine are being conducted at Pune and Chennai Centres. In order to find out the willingness of populations at risk to participate in future preventive HIV vaccine trials (HIVVTs) and to assess the factors that enhance or deter them from participation, a study was conducted at Chennai and Madurai in Tamil Nadu. Methods: This cross-sectional study was conducted among transport workers, people attending sexually transmitted infection clinics, injection drug users, men having sex with men, women in sex industry and a representative sample of monogamous married women, by employing measurement scales. A structured questionnaire on knowledge and attitudes about the HIV vaccine was used to measure the participants’ knowledge and attitudes about HIV vaccine and HIVVTs. Results: Of the 112 participants, 67 (60%) were men. Mean age of the respondents was 32 yr; 68 per cent were high school educated. Majority of respondents were willing to participate in a future HIVVT and the reasons were altruism, protection from HIV, and support for the researchers. Major concerns were vaccine efficacy, side effects of the vaccine and the impact of a HIV vaccine on the participants’ lives. Majority (85%) agreed that sex without condom would not be safe despite the availability of an HIV vaccine. Interpretation & conclusion: It is likely that high-risk volunteers will be willing to enroll in HIVVTs. Barriers and concerns should be dealt with carefully by providing correct information. Also there is a need for more education to ensure participants’ understanding of key concepts of HIV vaccine trial

Stability and structure of copper(II), nickel(II) and zinc(II) heterobinuclear complexes containing some biologically important ligands

365-369The stability constants of heterobinuclear complexes formed in aqueous solution for the biologically important ligands, viz., (i) dopa, (ii) dopamine (dopm) and (iii) -histidine(his) with Cu(II)-Ni(II), Cu(II)-Zn(ll) and Ni(II)-Zn(II) and (iv) -cysteine (cys) and (v) -penicillamine(pen) with Ni(II)-Zn(lI) have been evaluated by computer based analysis of the pH titration data. The binary systems Ni(II)/Zn(II)-dopa and dopm have also been studied. The heterobinuc1ear species of the types MAM' or MA2M' have been detected with dopa, dopm, cys and pen ligands, while in the his ligand systems MA2HM', MA2M', MA2H-1M' and MA2H- 2M' mixed metal species have been found to be present. A qualitative attempt has been made on the comparison of the log b values, to study the Irving-Williams order of stabilities. The higher stabilities of mixed metal complexes over the mixed ligand system is also discussed

Effect of nickel(II) ternary complex formation on the coordination behaviour of glycylglycine in aqueous solution

576-579The stability constants of parent complexes of the ligands glycylglycine and glycinamide(A) with Ni(Il). and of the ternary complexes formed with Iigands imidazole, histamine and L-histidine(B) have been determined by the pH-metric measurements at 37°C and l = 0.15 mol dm- 3 (NaCIO4). It has been found that the ligands A form NiABH, NiAB, and NiAH-1 B mixed ligand complexes with histamine and -histidine(B) Iigands. while with imidazole(B) ligand the saturated NiA B2 and unsaturated NiAB species have been found to be present. The mode of coordination of ligands A and B in the NiABH and NiAB/NiAB2 ternary species is similar to their binding in their respective binary species. Though amide deprotonated glycylglycine is tridentate in its NiAH-1 species, in the NiAH -1B ternary species in the Ni(II)-glycylglycine(A)-histamine/-histidine(B) systems. it binds the metal in a bidentate manner

Comparative Evaluation of Different Natural Farming System and Its Impact on the Yield of Great Millet (Sorghum bicolor L.)

The most recent and popular trend of organic agriculture in Indian farming system is Zero Budget Natural Farming (ZBNF) that is derived from the traditional method of cultivation practices. ZBNF approach follow practices viz., Intercropping, green manure incorporation, crop rotation, composting and degradation of agro-wastes and biocontrol of pests and diseases. Field trial was conducted in two consecutive years, with seven treatment options in randomized block design for validation of different natural farming system such as ZBNF approach, Network Project on Organic Farming (NPOF) and Integrated Crop Management (ICM) practices. Sorghum intercropping with cowpea (1:1) and ZBNF practices involving the application of traditional organic biostimulants derived from Gir cow (Desi breed) such as Bijamrith + Ghanajeevamrith + Jeevamrith with mulching (Acchadana)(T4) resulted in higher benefit cost ratio of 3.78 and closely followed by sorghum intercropping with cowpea (1:1) and ZBNF practices (Bijamrith + Ghanajeevamrith + Jeevamrith) (T3). Significantly higher grain yield of sorghum (2405 kg ha-1) was recorded in Integrated crop management (ICM-II) practices involving 50 % organic manures + 50 % inorganic fertilizers with need based traditional organic pesticides such as Neemastra, Agniastra, Brahmastra. The findings of the field level validation of ZBNF practices on yield of sorghum intercropping with cowpea suggest that there is an assured initial yield impact when converting to ZBNF compared to organic or conventional systems