National Academy Science

An Improved Server Validation Scheme for Multi-server Infrastructure Abstract An improved server validation scheme for a multi-server infrastructure has been introduced. In this scheme, each member involved in communication has to prove its validation before any exchange of information bits. This introduced scheme also secures the server against phishing and other similar attacks. Dynamic properties of the group are handled with ease, making the scheme suitable for real-life applications. Major achieved highlights of the method are that user privacy is respected without requiring any serious time synchronization.

Passenger Car Active Suspension System Model for Better Dynamic Characteristics Abstract The technological investigations to a light passenger car have been carried out in order to improve the comfort and safety features by the implementation of an active suspension system. A fuzzy logic control-based active suspension system is proposed for the fuel-efficient small passenger cars to fulfil the design upgradation requirements. The proposed design comprised of hydraulically powered actuators is installed at each of the car wheels between sprung and unsprung mass to compensate the ground forces in order to resolve the instability and comfort issues. The dynamic analysis figures out the significant improvement of 12% in comfort and 11.53% in the car stability.

Power Consumption-Based Dynamic Network Selection in Heterogeneous Networks Abstract Network selection is a critical task for mobile terminals moving in heterogeneous environment of next-generation wireless networks. Power consumption of mobile terminal is a matter of great concern in the present scenario for efficient network selection in integrated network of various wireless technologies. In this paper, multiple attributes decision-making-based dynamic network selection method PV–VPP is proposed by considering power consumption of mobile terminal at instantaneous battery level in heterogeneous networks.

Reducing Reconfiguration Overheads Using Configuration Prefetch, Optimal Reuse, and Optimal Memory Mapping Abstract Modern embedded systems are packed with dedicated field-programmable gate arrays (FPGAs) to accelerate the overall system performance. But the main drawback in using FPGA as a reconfigurable system is that a lot of reconfiguration overheads are generated in the reconfiguration process. The reconfiguration overheads are mainly because of the configuration data being fetched from the off-chip memory and also due to the improper management of tasks during execution. This work focusses mainly on the prefetch heuristics, reuse technique, and the available memory hierarchy to provide an efficient management of tasks over the available resources. This short communication proposes a new optimal replacement policy which reduces the overall time and energy reconfiguration overheads for static systems in their subsequent iterations. It is evident from the results that most of the time and energy reconfiguration overheads are eliminated.

q -Double Cesaro Matrices and q -Statistical Convergence of Double Sequences Abstract In this study, we introduce and examine the concepts of q-double Cesaro matrices and q-statistical convergence and q-statistical limit point of double sequences. Also, we give some relations connected to these concepts.

A Note on the Rainbow Neighbourhood Number of Certain Graph Classes Abstract A rainbow neighbourhood of a graph G is the closed neighbourhood N[v] of a vertex \(v \in V(G)\) which contains at least one colored vertex of each color in the chromatic coloring \({\mathscr {C}}\) of G. Let G be a graph with a chromatic coloring \({\mathscr {C}}\) defined on it. The number of vertices in G yielding rainbow neighbourhoods is called the rainbow neighbourhood number of the graph G, denoted by \(r_\chi (G)\) . In this paper, rainbow neighbourhood number of certain graph classes are discussed.

Report on Wild Eri Silkworm Samia canningii Hutton (Lepidoptera: Saturniidae) from Arunachal Pradesh, India Abstract This study was conducted to study morphology of the life stages of wild eri silkworm Samia canningii Hutton from Arunachal Pradesh, India, which is the easternmost part of Himalaya biodiversity hotspot. Fifth instar larvae are of three forms: (1) bluish white, (2) yellow and (3) bluish green. Colour of tubercle like projections in bluish white and bluish green larvae is blue in 5th instar. In yellow form, projections are yellow. Legs are orange in colour in all colour morphs. White powdery substance appears from 3rd instar larvae. Colour of newly spinned cocoon of S. canningii is bright yellow. Later, it turns to brown. Cocoons are open ended like Samia cynthia ricini. Matured larvae—median length of abdomen 62–65 mm, median body width 9–10 mm. Cocoon—median length 27–33 mm, Median breadth 12–14 mm.

New report of Trachyphyllum borgenii (Renauld & Cardot) Broth. (Bryophyta) from India with a Note on Its Disjunct Distribution in Madagascar Abstract The present study highlights the disjunct distribution of the moss Trachyphyllum borgenii (Renauld & Cardot) Broth. Trachyphyllum borgenii, was earlier known as an endemic to Madagascar, has recently been identified at Pachmarhi Biosphere Reserve (PBR), central India. The discovery of T. borgenii is a new record for Indian subcontinent with extended range of distribution from Madagascar and now it can be designated as a species with disjunct distribution instead of an endemic species.

Omnidirectional Radio Propagation Antenna Using Organized Grouping of Monopole Antennas Abstract An omnidirectional radio propagation antenna is designed in the present study by grouping three microstrip monopole antennas of MRF24J40MA transceiver on a transmitter device. MRF24J40MA transceiver is operating at 2.4 GHz of frequency with maximum transmission power of 0 dBm and receiving sensitivity of − 91 dBm. The proposed antenna radiating characteristic is tested by measuring the maximum received signal strength indicator along the angular direction from 0 to 360 degree. The main objective of this letter is to authenticate the work of various localization algorithms based on oversimplification of radio propagation model.

An Efficient Hybrid User Profile Based Web Search Personalization Through Semantic Crawler Abstract The World Wide Web has a collection of trillions of web pages and these web pages are increasing day by day. Web pages available on the Web change frequently and these changes are sometimes unnoticeable by the end user. The exponential growth of web documents on the Internet makes it difficult to find out which are the most relevant web documents for a particular end user on a given search query and user spends a lot of time to get relevant information. The proposed web search personalization system successfully identifies preferences of the end user and constructs an efficient user profile for every end user. It utilizes the built web page repository by retrieving web search results and personalizes them according to user preferences. It is also capable to handle ambiguous queries. The proposed system increases the search accuracy by 37.6% over existing agent based personalization system.