Deteriorating Inventory Model For Two Parameter Weibull Demand With Shortages

In this paper a deteriorating inventory model have been developed for two parameter Weibull demand rate. Shortages are allowed and are completely backlogged .This inventory system follows an two-parameter exponnential distribution deterioration rate in which the holding cost is constant .The results are described with the numerical example and sensitivity analysis. Keywords: Deterioration, Exponential distribution, holding cost, Inventory, shortages, Weibull demand rate

IN VITRO ANTIMICROBIAL ACTIVITY OF MARINE ACTINOBACTERIA ISOLATES FROM PULICAT LAKE, TAMIL NADU, INDIA

ABSTRACTObjectives: The present investigation is undertaken with an aim to check the antimicrobial potential of marine Actinobacteria isolated from marinesediment samples collected from Pulicat Lake, Tamil Nadu.Methods: In this study, various physical and chemical pretreatment methods were used for selective isolation of Actinobacteria including air drying,incubation of soil samples with calcium carbonate, incorporation of antibacterial, antifungal antibiotics in the media and plating on Actinobacteriaspecificmedia.Acombinationof suchmethodsfacilitatedisolationof slowgrowingActinobacteriawith a simultaneous reductionof otherfree-livingbacterialand fungalcontaminants. The primary and secondary screeningwasdone toascertain the antimicrobialpotentialof these isolates.Results: The results obtained from primary screening was about 110 isolates, were tested against Pseudomonas aeruginosa, Staphylococcus aureus,Candida albicans, and Aspergillus niger, out of these, 31 isolates showed remarkable antimicrobial activity. Based on the results of primary screening,31 isolates were subjected to secondary screening from which two isolates with a strong and broad spectrum of antimicrobial activity were selectedfor further studies.Conclusion: The present study is useful as the isolation of most of the antimicrobial compounds from different Actinobacteria species showed partialresemblance to earlier reported antibiotic chemical structures. Further, chemical characterization of the isolated compound from producer isolatesmay yield more effective analogs or hybrid bioactive molecules.Keywords: Actinobacteria, Antimicrobial activity, Pulicat lake

Design Approach to Implementation Of Arbitration Algorithm In Shared Bus Architectures (MPSoC)

The multiprocessor SoC designs have more than one processor and huge memory on the same chip. SoC consists of hardware cores and software cores ,multiple processors, embedded DRAM and connectors between cores .A wide range of MPSOC architectures have been developed over the past decade. This paper surveys the history of various On-Chip communication architectures present in the design of MPSoC. This acts as a primary factor of overall performance in complex SoC designs. Some of the various techniques that have driven the design of MpSoC has been discussed. Dynamically configurable communication architectures are found to improve the system performance. Currently On-chip interconnection networks are mostly implemented using shared buses which are the most common medium. The arbitration plays a crucial role in determining performance of bus-based system, as it assigns priorities, with which processor is granted the access to the shared communication resources. In the conventional arbitration algorithms there are some drawbacks such as bus starvation problem and low system performance. The bus should provide each component a flexible and utmost share of on-chip communication bandwidth and should improve the latency in access of the shared bus. The performance of SoC is improved using the probabilistic round robin algorithm with regard to the parameters, latency.Thus in this paper various issues related to bus arbitration related to design of MPSoC is analysed

Characterization of connected Vertex Magic Total labeling graphs in Topological ideals

A graph with v vertices and e edges is said to be vertex magic total labeling graph if there is a one to one map taking the vertices and edges onto the integers 1,2,+e with the property that the sum of the label on the vertex and the labels of its incident edges is constant, independent of the choice of the vertex. An ideal space is a triplet, where X is a nonempty set, Ï„ is a topology, I is an ideal of subsets of X. In this paper we characterize connected vertex magic total labeling graphs through the ideals in topological spaces. Keywords: Vertex magic total labeling graphs, ideal, topological space, Euler graph

Vertex Magic Total labeling in Hamiltonian graphs

A vertex magic total labeling on a graph with vertices and edges is a one - to - one map taking the vertices and edges onto the integers , , , … + with the property that the sum of the label on the vertex and the labels of its incident edges is constant, independent of the choice of the vertex. It is proved that all cycles have vertex magic total labeling. The Hamiltonian graphs have necessarily a cycle in it. Hence we study the relation of vertex magic total labeling in Hamiltonian graphs

Ann Modelling of Groundwater Quality Index

Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchiv

Energy efficient decision fusion for differential space-time block codes in wireless sensor networks

The non-coherent techniques that do not require the channel state information have gained significant interest especially when multiple transmitter and receiver nodes are involved in communication. In this paper, we analyze the energy efficiency of differential and coherent cooperative Multiple-input Multiple-output (MIMO) method using space-time block codes (STBC). We exploit the benefits of the extension of the observation interval of differential STBC to three blocks in Wireless sensor networks (WSNs). We propose an energy efficient decision fusion (EEDF) algorithm in WSNs which utilizes the benefits of Multiple symbol differential detection (MSDD) decision fusion by optimally selecting the ring amplitude of the differential amplitude phase shift keying (DAPSK) constellation. The simulation results show that processing differential multiple symbols provides significant energy saving compared to the conventional two-symbol processing. Furthermore, significant performance gain is achieved for the proposed algorithm compared to 16 DPSK MSDD decision fusions

Energy efficient decision fusion for differential space-time block codes in wireless sensor networks

147-156The non-coherent techniques that do not require the channel state information have gained significant interest especially when multiple transmitter and receiver nodes are involved in communication. In this paper, we analyze the energy efficiency of differential and coherent cooperative Multiple-input Multiple-output (MIMO) method using space-time block codes (STBC). We exploit the benefits of the extension of the observation interval of differential STBC to three blocks in Wireless sensor networks (WSNs). We propose an energy efficient decision fusion (EEDF) algorithm in WSNs which utilizes the benefits of Multiple symbol differential detection (MSDD) decision fusion by optimally selecting the ring amplitude of the differential amplitude phase shift keying (DAPSK) constellation. The simulation results show that processing differential multiple symbols provides significant energy saving compared to the conventional two-symbol processing. Furthermore, significant performance gain is achieved for the proposed algorithm compared to 16 DPSK MSDD decision fusions