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An Energy Consumption Model for Time Hopping IR-UWB Wireless Sensor Networks
Hoque, M.E.,Khan, M.A.,Parvez, A.Al,An, Xizhi,Kwak, Kyung-Sup The Korea Institute of Information and Commucation 2007 韓國通信學會論文誌 Vol.32 No.6b
In this paper we proposed an energy consumption model for IR-UWB wireless sensor networks. The model takes the advantages of PHY-MAC cross layer design, and we used slotted and un-slotted sleeping protocols to compare the energy consumption. We addressed different system design issues that are responsible to energy consumption and proposed an optimum model for the system design. We expect the slotted sleeping will consume less energy for bursty load than that of the un-slotted one. But if we consider latency, the un-slotted sleeping model performs better than the slotted sleeping case.
An Energy Consumption Model for Time Hopping IR-UWB Wireless Body Sensor Networks
M. E. Hoque,M. A. Khan,Al. Parvez,Xizhi An,Kyung Sup Kwak 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7
In this paper, we focused on the energy consumption model of Wireless Body Sensor Networks (WBSN), where sensors can be deployed in various part of a human body. Since energy limitation is one of the biggest challenging issues in sensor network, it becomes more crucial for some special devices if those are used inside the body and then become impossible to replace frequently. In such a case, we must need to increase the lifetime of a sensor node. We proposed a Time Hopping Impulse Radio Ultra Wide Band (TH IR-UWB) energy consumption model for sensor nodes along with the slotted sleeping protocol. Simulation results showed that energy consumption per bit was very low and therefore this energy model was useful to increases the lifetime of WBSN.
Biswas, H.R.,Hoque, M.M.,Chowdhury, S.M.Z.H.,Oxley, M.E.,Rahman, M.M. Asian Australasian Association of Animal Productio 1996 Animal Bioscience Vol.9 No.2
Bangladeshi indigenous chickens of mixed ages vaccinated twice at a three week interval with either conventional vaccines-$F_1$ (ocular) and M (mukteswar, Intramuscular), or heat resistant $V_4$ vaccine administered by either the ocular or oral routes, all showed satisfactory hemagglutination inhibition antibody (HI) responses and protection against Newcastle Disease (NCD) challenge persisting for four months. The antibody response to $F_1$ and M was higher than for $V_4$, which was similar whether administered by the ocular or oral routes. All vaccinated treatments have a significant level of protection compare to the control group (p<0.01). No significant difference (p>0.05) in the protection against controlled challenge with virulent NCD virus was found between vaccinated groups.
Analysis of Energy Consumption and Sleeping Protocols in PHY-MAC for UWB Networks
Khan, M.A.,Al Parvez, A.,Hoque, M.E.,An, Xizhi,Kwak, Kyung Sup IEEE 2007 Advanced Communication Technology, The 9th Interna Vol.1 No.-
<P>Energy conservation is an important issue in wireless networks, especially for self-organized, low power, low data-rate impulse-radio ultra-wideband (IR-UWB) networks, where every node is a battery-driven device. To conserve energy, it is necessary to turn node into sleep state when no data exist. This paper addresses the energy consumption analysis of direct-sequence (DS) versus time-hopping (TH) multiple accesses and two kinds of sleeping protocols (slotted and unslotted) in PHY-MAC for UWB networks. We introduce an analytical model for energy consumption of a node in both TH and DS multiple accesses and evaluate the energy consumption comparison between them and also evaluate the performance of the proposed sleeping protocols. Simulation results show that the energy consumption per packet of DS case is less than TH case and for slotted sleeping is less than that of unslotted one for bursty load case, but with respect to the load access delay unslotted one consumes less energy, that maximize node lifetime.</P>
Analysis of Energy Consumption and Sleeping Protocols in PHY-MAC for UWB Networks
Khan, M.A.,Parvez, A.Al,Hoque, M.E.,An, Xizhi,Kwak, Kyung-Sup The Korea Institute of Information and Commucation 2006 韓國通信學會論文誌 Vol.31 No.12b
Energy conservation is an important issue in wireless networks, especially for self-organized, low power, low data-rate impulse-radio ultra-wideband (IR-UWB) networks, where every node is a battery-driven device. To conserve energy, it is necessary to turn node into sleep state when no data exist. This paper addresses the energy consumption analysis of Direct-Sequence (DS) versus Time-Hopping (TH) multiple accesses and two kinds of sleeping protocols (slotted and unslotted) in PHY-MAC for Un networks. We introduce an analytical model for energy consumption or a node in both TH and DS multiple accesses and evaluate the energy consumption comparison between them and also the performance of the proposed sleeping protocols. Simulation results show that the energy consumption per packet of DS case is less than TH case and for slotted sleeping is less than that of unslotted one for bursty load case, but with respect to the load access delay unslotted one consumes less energy, that maximize node lifetime.
Investigation of the optical potentials for the 40Ca(α,t)41Sc reaction at 40 MeV
Mazumder U. K.,Somadder A.,Hoque E.,Das S. K. 한국물리학회 2022 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.80 No.7
The 40Ca(α,t)41Sc reaction has been studied at a 40 MeV incident energy. The angular distributions of the eight states of the reaction are analyzed using the full finite-range (FFR) distorted-wave Born approximation (DWBA) for both the bound and the unbound states of the 41Sc nucleus using the normal optical, Michel and molecular potentials. The spectroscopic factors that have been extracted for the three optical potentials are compared with the previous local zero-range (LZR) and local finite-range (LFR) calculations of the 40Ca(α,t)41Sc reaction for the normal optical potential. The χ2 values of all the potentials for different l transfers are calculated to estimate the quality of fits. The present analysis shows that the Michel and the molecular potentials fit the data more satisfactorily than the normal optical potential.