A probabilistic approach to reduce the route establishment overhead in AODV algorithm for manet

Mobile Ad-hoc Networks (MANETS) is a collection of wireless nodes without any infrastructure support. The nodes in MANET can act as either router or source and the control of the network is distributed among nodes. The nodes in MANETS are highly mobile and it maintains dynamic interconnection between those mobile nodes. MANTEs have been considered as isolated stand-alone network. This can turn the dream of networking "at any time and at any where" into reality. The main purpose of this paper is to study the issues in route discovery process in AODV protocol for MANET. Flooding of route request message imposes major concern in route establishment. This paper suggests a new approach to reduce the routing overhead during the route discovery phase. By considering the previous behaviour of the network, the new protocol reduces the unwanted searches during route establishment processComment: International Journal of Distributed and Parallel Systems (IJDPS) Vol.3, No.2, March 201

Satellite based potential fishing zone (PFZ) advisories - acceptance levels and benefits derived by the user community along the Kerala coast

Intensive validation studies of potential fishing zone (PFZ) advisories generated using integration of ocean colour monitor (OCM) derived chlorophyll concentration and advanced very high resolution radiometer (AVHRR) derived sea surface temperatures (SST) were undertaken by the Indian National Centre for Ocean Information Services (INCOIS) along Kerala coast during the period 2003-2011. There is a positive relationship between PFZ advisories and occurrence/abundance of commercially important pelagic fishes such as oilsardine, Indian mackerel, anchovies, carangids and coastal tunas. Fishing operations undertaken on or closer to dates on which related SST/chlorophyll images have been received yielded positive results. As the gap increases, the yield within PFZ is likely to come down unless the features remain more or less in the same location as revealed by succeeding satellite imagery. The present paper revealed that the fish catch (CPUE) and net profit earned are higher within PFZ compared to the results of operations outside PFZ. The usefulness of PFZ advisories, the only short term marine fishery forecast available in the country for fisherfolk towards obtaining comparatively higher catch per unit effort for the above mentioned major pelagics is proved beyond doubt from the results of more than 100 controlled experiments conducted within and outside PFZ with identical fishing gear along Kerala coast

Tumors in von Hippel–Lindau Syndrome: From Head to Toe—Comprehensive State-of-the-Art Review

Von Hippel–Lindau syndrome (VHL) is an autosomal-dominant hereditary tumor disease that arises owing to germline mutations in the VHL gene, located on the short arm of chromosome 3. Patients with VHL may develop multiple benign and malignant tumors involving various organ systems, including retinal hemangioblastomas (HBs), central nervous system (CNS) HBs, endolymphatic sac tumors, pancreatic neuroendocrine tumors, pancreatic cystadenomas, pancreatic cysts, clear cell renal cell carcinomas, renal cysts, pheochromocytomas, paragangliomas, and epididymal and broad ligament cystadenomas. The VHL/hypoxia-inducible factor pathway is believed to play a key role in the pathogenesis of VHL-related tumors. The diagnosis of VHL can be made clinically when the characteristic clinical history and findings have manifested, such as the presence of two or more CNS HBs. Genetic testing for heterozygous germline VHL mutation may also be used to confirm the diagnosis of VHL. Imaging plays an important role in the diagnosis and surveillance of patients with VHL. Familiarity with the clinical and imaging manifestations of the various VHL-related tumors is important for early detection and guiding appropriate management. The purpose of this article is to discuss the molecular cytogenetics and clinical manifestations of VHL, review the characteristic multimodality imaging features of the various VHL-related tumors affecting multiple organ systems, and discuss the latest advances in management of VHL, including current recommendations for surveillance and screening

Length-weight relationship and relative condition factor of Stolephorus commersonii (Lacepede, 1803) exploited along Kerala coast

The length-weight relationship and relative condition factor of Stolephorus commersonii was calculated to assess the significance of allometric factor and the well being. The study was carried out by using the data collected from ring seine and purse seine catches during the year 2010-2011. The length of species in catches ranged from 5 to 14.6 cm with a mean length of 9.24 ± 1.83 cm and the weight ranged from 1 to 25g with an average weight of 6.64 ± 3.96 g. Length-weight relationship calculated for male, female and pooled are W = 0.0070 L3.02, W = 0. 00756 L2.99 and W = 0. 0073 L3.006 respectively. The relative condition factor (Kn) estimated separately for male and female showed monthly fluctuation. The highest Kn values were observed in February and August and the lowest in June for both the sexes

Growth and maturity of Indian oil sardine Sardinella longiceps (Valenciennes, 1847) along southwest coast of India

Growth studies are important to determine the total recruitment of fish with respect to time while information on age and length at first maturity are essential to assess the spawning stock. The present communication deals with growth, maturity and mortality parameters of Indian oil sardine Sardinella longiceps from southwest coast of India. Length at first maturity of oil sardine was found to be 15.7 and 15.2 cm for male and female, respectively. Comparison of length at first maturity of oil sardine with earlier studies showed only minor variations. The growth parameters L∞, K, and age at zero length (t0) were calculated as 19.8 cm, 1.14 yr-1 and -0.0464 respectively. From the VBG equation, the length attained at the end of I, II and III year is estimated as 13.79, 17.87 and 18.9 cm respectively. Two peaks of recruitment to the fishery were observed. The values of total mortality (Z), natural mortality (M) and fishing mortality (F) estimated are 4.33, 2.7 and 1.6 respectively. The exploitation rate was found to be 0.37

Validation of tuna Potential Fishing Zone advisories of Lakshadweep with a note on tuna habitat preferences and biology

Validation of tuna Potential Fishing Zone advisories of Lakshadweep with a note on tuna habitat preferences and biolog

A Fuzzy rule- based Abandoned Object Detection using Image Fusion for Intelligent Video Surveillance Systems

Abandoned object/luggage is a major threat in all public scenes like hospitals, railway stations, airports and shopping malls.  Abandoned luggage may contain explosive, biological warfare or smuggled goods. Abandoned object detection is the process to identify the unattended strange object within a specific time.  It is also crucial to identify the person who has abandoned the luggage in the scene. Video surveillance is one of the essential techniques for automatic video analysis to extract crucial information or relevant scenes. The main objectives of this work is the automatic detection of abandoned objects and related persons in public areas like airports, railway stations, shopping malls etc.  Video enhancement techniques like residual dense networks are adopted to improve the quality of the image before applying it to detect the abandoned objects and related humans. The scenario of abandoned objects and related humans are identified through distance differencing methods.  Once the scene is identified, the method is capable of producing alert messages or alarms in real-time through automated means.  A fuzzy rule based threat assessment module is also incorporated in this work which reduces the false alarm rate. The related person is identified through reconstruction of the face through super-resolution techniques. Experiments are found to be appreciable in terms of the metrics in video enhancement, detection, fuzzification and face super-resolution

Prediction of pregnancy induced hypertension and its severity by elevated serum beta HCG level in second trimester of pregnancy

AIM AND OBJECTIVE: 1. To predict preeclampsia by elevated Beta HCG levels in the second trimester of pregnancy. 2. To assess the severity of preeclampsia correlated with the elevated levels of Beta HCG levels. MATERIALS AND METHODS: It was randomized controlled study at the INSTITUTE OF OBSTETRICS AND GYNECOLOGY the tertiary referral center in South India with about 10,000 -12,000 deliveries per annum. women who presented to our antenatal clinics with singleton pregnancies,in the second trimester of pregnancy. Duration of the study January 2014 - October 2014. All normotensive nonproteinuric pregnant women selected randomly between gestational age 13 to 20 weeks attending AN clinics irrespective of parity, Gestational age calculated from reliable menstrual history dates and early ultrasonographic measurement of fetal crown rump length. Serum beta HCG levels estimation done by chemiluminscent method. Follow up of AN mothers done till third trimester by monitoring blood pressure and proteinuria, Prediction of Preeclampsias done according to the elevated serum beta HCG levels,Severity of the preeclampsia classified according to the elevated beta HCG levels. Inclusion Criteria: All normotensive nonproteinuric pregnant women selected randomly between gestational age 13 to 20 weeks attending AN clinics irrespective of parity. Exclusion Criteria: Women with Multiple pregnancy, Essential hypertension, Diabetes mellitus, Molar pregnancy. OUTCOME OF THE STUDY: Elevated serum beta HCG levels are in second trimester are associated with preeclampsia. Elevated beta HCG levels are associated with severity of preeclampsia. Better maternal and perinatal outcome in patients with preeclampsia