42 research outputs found

    Secure Data Collection Using Randomized Multipath Routing

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    Wireless Sensor Networks (WSNs) are widely used in various real time applications such as surveillance, environment monitoring, studying wildlife habitat and so on. As the nodes in the network are resource constrained, they are vulnerable to various attacks. This is the reason there is need for secure data collection in such networks. Many solutions came into existence to provide secure communications in WSN. However, the solutions were based on different techniques. Minimization of packet failure rate is one of the objectives of many researchers in this area. The potential attacks on the network can jeopardise its purpose. Recently Alghamdi et al. proposed a solution using multipath routing in which the effect of adversaries is reduced besides ensuring secure data transmission in the presence of malicious nodes in the network. Our work is similar to this with certain improvements in terms of energy consumption and also packet delivery failure ratio. We implemented a WSN with simulations and our approach used a controller in the network which, in consultation with base station, can play a vital role in prevention of attacks. Since the solution is based on randomized multipath routing, it is able to withstand potential attacks and ensure that the failure of packet delivery is minimized and the overall network performance is improved. The simulation results reveal that the proposed approach has better performance in terms of performance level of protocol, network throughput, delay analysis, percentage of packet loss, and energy consumption. DOI: 10.17762/ijritcc2321-8169.150713

    A Study Of Flexural With Cut Off Intensification Of RC Joist

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    This study presents a final report on adaptive concrete adjustment / bonding system for flexural conditioning of RC participants. The use of adhesive tape in this system has actually reduced the elastic modulus when extending as much as tensile crack. Thus, the bonding line between FRP and concrete can generate a huge shear deviation to delay or prevent the regional UI removal event. Derived from FRP panels / concrete user interface withdrawal tests, research lab tests on constant efficiency along with participant depletion in RC reinforced with FRP sheets, and also reported a complete inspection on a 15m T-beam at this paper. Failed systems for reinforcing participants in typical bonding situations as well as relatively adaptable bonding systems are inspected. In contrast to the typical bonding system, the versatile system has already confirmed its attractive validity in improving the RC spotlight beam for improved stiffness and deformation. However, this method is preferred for the maximum constraint boost function only because it adds a less rigid optimization under the Restricted Service Condition

    INTELLIGENT HOME: SMS BASED HOME SECURITY SYSTEM WITH IMMEDIATE FEEDBACK

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    ABSTRACT A low cost Short Message System (SMS) base

    Decarbonizing airport using solar and wind farm : A case of Biratnagar, Nepal

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    Airports strive for a greener energy transition to minimize their carbon footprint and greenhouse gas emissions. The installation of solar or wind turbines is gaining significance among stakeholders working in sustainable airports. This study focuses on developing Biratnagar airport as a completely greener airport by identifying suitable sites for installing Solar and wind farms within the premises without compromising on safety aspects, including glare occurrence and environmental and electrical safety. PVSYST V6.8.7 and HOMER V2.81 software are used to simulate the performance of PV and wind turbine power plants. Three sizes of Vertical axis wind turbines (VAWT) of EOLO 15 kW, Tree tree-shaped wind Turbine (TSWT) 58.5 kW and TSWT 585 kW have been used for the Simulation. A sensitivity analysis of various parameters, including interest rates, wind speed, and wind turbine types, has been carried out to study the cost of energy generation in grid-connected mode. According to the study, a 157 kWp solar PV power plant is sufficient for Biratnagar Airport to become Nepal's first fully green-powered airport. The project's Levelized Cost of Electricity (LCOE) equals 0.141 $/kWh if wind energy is used to supply part of the electricity with the annual wind electricity production of 23,184 kWh. The combined 15 kW wind turbine-grid scenario is superior to the grid scenario for wind speeds of more than nine m/s and interest rates of less than 10 %. These findings increase airport authorities' and stakeholders' confidence in the investment in greener airports

    Quantitative tissue proteome profile reveals neutrophil degranulation and remodeling of extracellular matrix proteins in early stage gallbladder cancer

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    Gallbladder cancer (GBC) is an aggressive malignancy of the gastrointestinal tract with a poor prognosis. It is important to understand the molecular processes associated with the pathogenesis of early stage GBC and identify proteins useful for diagnostic and therapeutic strategies. Here, we have carried out an iTRAQ-based quantitative proteomic analysis of tumor tissues from early stage GBC cases (stage I, n=7 and stage II, n=5) and non-tumor controls (n=6) from gallstone disease (GSD). We identified 357 differentially expressed proteins (DEPs) based on ≥ 2 unique peptides and ≥ 2 fold change with p value < 0.05. Pathway analysis using the STRING database showed, ‘neutrophil degranulation’ to be the major upregulated pathway that includes proteins such as MPO, PRTN3, S100A8, MMP9, DEFA1, AZU, and ‘ECM organization’ to be the major downregulated pathway that includes proteins such as COL14A1, COL1A2, COL6A1, COL6A2, COL6A3, BGN, DCN. Western blot and/or IHC analysis confirmed the elevated expression of MPO, PRTN3 and S100A8 in early stage of the disease. Based on the above results, we hypothesize that there is an increased neutrophil infiltration in tumor tissue and neutrophil degranulation leading to degradation of extracellular matrix (ECM) proteins promoting cancer cell invasion in the early stage GBC. Some of the proteins (MPO, MMP9, DEFA1) associated with ‘neutrophil degranulation’ showed the presence of ‘signal sequence’ suggesting their potential as circulatory markers for early detection of GBC. Overall, the study presents a protein dataset associated with early stage GBC

    ENSO and the recent warming of the Indian Ocean

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    The recent Indian Ocean (IO) warming and its relation with the El Niño Southern Oscillation (ENSO) is investigated using available ocean and atmospheric reanalyses. By comparing the events before and after 1976 (identified as a threshold separating earlier and recent decades with respect to global warming trends), our results indicate that the IO had experienced a distinct change in the warming pattern. After 1976, during the boreal summer season the cold anomalies in the IO were replaced by warm anomalies in both warm (El Niño) and cold (La Niña) ENSO events. Strong sinking by upper level winds and the associated anomalous equatorial easterly winds created favourable conditions for the IO warming from 90°E towards the western IO. Our study highlights that after 1976, atmospheric and oceanic fields changed mostly during La Niña, with both ENSO phases contributing to the warming of the IO. Warm anomalies of 0.2 °C are seen over large areas of the IO in the post-1976 La Niña composites. Our analysis suggests that the IO warming during La Niña events after 1976 may have a relation to the warm anomalies persisting from the preceding strong El Niño events

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    Not AvailableA wireless sensor network (WSNs) is a solution to many environmental, security, and process monitoring problems. Although the fast developments of small dimension, low cost and low power circuit and sensor, energy supply is becoming a big barrier to wireless sensor networks. Piezoelectric energy harvesting techniques are still in a development stage. In this paper, electroelastic modeling, analytical and numerical solutions, and experimental validations for piezoelectric energy harvesters in wireless sensing networks powered by non-harmonic motionhave been proposed. Future research needs and challenges of electroelastic modeling of piezoelectric energy harvesters in wireless sensing network powered by non-harmonic motion have been also discussed.Not Availabl

    Sarcomatoid salivary duct carcinoma of parotid gland – A rare histological variant

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    Salivary duct carcinoma (SDC) is a rare and high-grade malignant tumor that arises predominantly in a major salivary gland and bears a striking histological resemblance to high grade ductal adenocarcinoma of breast. The sarcomatoid SDC is a rare subtype that comprises of both epithelial and sarcomatoid components. The authors describe a case of sarcomatoid SDC of parotid gland. Its histological features have been discussed. The patient was treated by total parotidectomy with wide local excision of the involved skin and ipsilateral neck dissection followed by adjuvant radiotherapy
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