500 research outputs found

    Charged Vector Particles Tunneling From A Pair of Accelerating and Rotating and 5D5D Gauged Super-Gravity Black Holes

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    The aim of this paper is to study the quantum tunneling process for charged vector particles through the horizons of black holes by using Proca equation. For this purpose, we have consider a pair of charged accelerating and rotating black holes with NUT parameter and a black hole in 5D5D gauged supergravity, respectively. Further, we have studied the tunneling probability and corresponding Hawking temperature for both black holes by using WKB approximation.Comment: 17 Pages. Title modified and minor corrections. Submitted for Publication

    Improving energy consumption of commercial building with IoT and machine learning

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    Intelligent intrusion detection in low power IoTs

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    Security and privacy of data are one of the prime concerns in today’s Internet of Things (IoT). Conventional security techniques like signature-based detection of malware and regular updates of a signature database are not feasible solutions as they cannot secure such systems effectively, having limited resources. Programming languages permitting immediate memory accesses through pointers often result in applications having memory-related errors, which may lead to unpredictable failures and security vulnerabilities. Furthermore, energy efficient IoT devices running on batteries cannot afford the implementation of cryptography algorithms as such techniques have significant impact on the system power consumption. Therefore, in order to operate IoT in a secure manner, the system must be able to detect and prevent any kind of intrusions before the network (i.e., sensor nodes and base station) is destabilised by the attackers. In this article, we have presented an intrusion detection and prevention mechanism by implementing an intelligent security architecture using random neural networks (RNNs). The application’s source code is also instrumented at compile time in order to detect out-of-bound memory accesses. It is based on creating tags, to be coupled with each memory allocation and then placing additional tag checking instructions for each access made to the memory. To validate the feasibility of the proposed security solution, it is implemented for an existing IoT system and its functionality is practically demonstrated by successfully detecting the presence of any suspicious sensor node within the system operating range and anomalous activity in the base station with an accuracy of 97.23%. Overall, the proposed security solution has presented a minimal performance overhead.</jats:p

    Impact of WTO’s Trade Liberalisation on Selected Food Crops in Pakistan

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    WTO has major implications for almost all the sectors of economy but agriculture sector is the one which is more prone to the implementation of its agreements, particularly the Agreement on Agriculture (AoA). The study intended to evaluate the impact of WTO on domestic ma rket and farm-level prices, production and consumption of major food commodities like wheat and rice and ultimately their impact on the producer’s and consumer’s surpluses. The farm level impact was also evaluated to chalk out the eventual position at farm level with the purpose to identify necessary policies and actions to cope with the new world situation. The study tries to provide a useful guide to the likely impacts of agricultural trade liberalisation. It was found that openness of the economy would affect the domestic demand, supply and consumption along with affecting the producer and consumer surpluses. It was estimated that increased prices would have increased production of wheat which would have generated a gain of producer’s surplus of Rs 10,682 million. On the other hand due to increased wholesale price of wheat, the domestic demand of wheat would have declined and caused a loss to consumer surplus of Rs 12,557 million. Similarly, the increased production of rice would have generated a gain of producer’s surplus of Rs 3,708 million. However, due to increase in the wholesale price of rice, its domestic demand would have declined thus causing a loss to consumers’ surplus. Overall the impact of the increase in the international price of wheat would have resulted in a net loss to Pakistan of Rs 1,875 million during 2004-05 while in case of rice it would have resulted in a gain of Rs 1,215 million in 2004-05.Trade Liberalisation, Food Crops, Export, Consumer Surplus, Comparative Advantage, Free Trade.

    An intelligent real-time occupancy monitoring system with enhanced encryption and privacy

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