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Shahjalal, Md.,Hossan, Md. Tanvir,Hasan, Moh. Khalid,Chowdhury, Mostafa Zaman,Le, Nam Tuan,Jang, Yeong Min WILEY INTERSCIENCE 2018 WIRELESS COMMUNICATIONS AND MOBILE COMPUTING Vol.2018 No.-
<P>Optical camera communication (OCC) exhibits considerable importance nowadays in various indoor camera based services such as smart home and robot-based automation. An android smart phone camera that is mounted on a mobile robot (MR) offers a uniform communication distance when the camera remains at the same level that can reduce the communication error rate. Indoor mobile robot navigation (MRN) is considered to be a promising OCC application in which the white light emitting diodes (LEDs) and an MR camera are used as transmitters and receiver, respectively. Positioning is a key issue in MRN systems in terms of accuracy, data rate, and distance. We propose an indoor navigation and positioning combined algorithm and further evaluate its performance. An android application is developed to support data acquisition from multiple simultaneous transmitter links. Experimentally, we received data from four links which are required to ensure a higher positioning accuracy.</P>
Shahjalal, M.,Bishwas, M.A.A.,Tareque, A.M.M.,Dohi, H. Asian Australasian Association of Animal Productio 2000 Animal Bioscience Vol.13 No.5
Twelve castrated male Black Bengal goats with an average live weight of 10.3 kg (8 months old) were used in a $2{\times}2$ factorial arrangement to study the effects of dietary crude protein concentration [20.3% (HP) and 16.9% (LP)] and feeding level [ad libitum and 85% of ad libitum (restricted)] on growth and carcass characteristics. Ad libitum feeding, on average, significantly (p<0.05 to p<0.01) increased daily live weight (6.27 vs -5.86 g), dry mater intake (409 vs 351 g/d), estimated gain in carcass (0.195 vs -0.200 kg) and empty body weight (0.385 vs -0.350 kg), chemically extracted fat in meat sample (6.89 vs 6.48%), depth of M. longissimus dorsi (22.1 vs 18.3 mm) and gut and caul fat (170 vs 130 g) compared with restricted feeding regime. The greater intake of dietary protein from the HP diet resulted in significantly (p<0.05 to p<0.01) greater values for depth (20.9 vs 19.5 mm) and width (32.4 vs 27.9 mm) of M. longissimus dorsi, gut and caul fat (190 vs 110 g) and also perirenal and retroperitoneal fat (85 vs 50 g) than those of the goats that received the LP diet. Similarly, the HP diet had significantly (p<0.05 to p<0.01) higher values for CP digestibility and DCP concentration than those of the LP diet. The results indicated that growth rate and carcass gain were highest in goats fed the HP diet ad libitum and therefore, diet containing 20.3% CP may be suggested for feeding growing goats.
Feeding Sesbania Leaves as a Sole Feed on Growth and Nutrient Utilization in Goats
Shahjalal, M.,Topps, J.H. Asian Australasian Association of Animal Productio 2000 Animal Bioscience Vol.13 No.4
An experiment was conducted for 56 days using nine castrated male Black Bengal goats (initial live weight 9.0 kg) aged about 5 months to study the effects of feeding Sesbania leaves as a sole feed on growth performance and nutrient utilization. The animals were fed ad libitum on either road-side grass, Sesbania aculeata leaves or Sesbania rostrata leaves. Average dry matter (DM) intake was 179, 229 and 259 g/d for goats fed road-side grass, Sesbania aculeata and Sesbania rostrata, respectively. Corresponding mean values for average daily live weight change were -6.6, 9.5 and 38.1 g, respectively. These values were higher (p<0.05) for goats fed Sesbania leaves than those given road-side grass. The apparent digestibility of all the proximate components except CF and the concentrations of DCP, TDN, DOM and ME of Sesbania leaves were higher (p<0.05) than those of road-side grass. Sesbania rostrata was superior (p<0.05) to Sesbania aculeata for nutrient digestibilities (except for NFE) and also for DOM, DCP and ME concentrations. Therefore, it may be concluded that the production of Sesbania rostrata, a legume fodder, should be encouraged for feeding goats.
Shahjalal, M.,Dohi, H.,Kosako, T.,Hayashi, Y. Asian Australasian Association of Animal Productio 2000 Animal Bioscience Vol.13 No.2
Appetite stimulant ether-soluble neutral extract of a high-grain compound feed was separated into four fractions with an open column of silica gel chromatograph using four carrier solutions containing n-pentane and diethyl ether as 100:0 (Fraction A), 90:10 (Fraction B), 75:25 (Fraction C) and 0:100 (Fraction D). The stimulative effects of the fractions were examined by comparing the intake of hay (with or without the fractions) in two-choice test bioassays with cattle. The Fractions A, B and C of the neutral extract stimulated (p<0.05) hay consumption in cattle, whereas Fraction D had no effect on selective feeding when compared with the control fraction. Furthermore, Fractions A, B and C had higher (p<0.05) feeding stimulative indices (FSI) than that of the Fraction D. The results suggest that chemical stimulants to increase palatability of hay are present in the neutral Fractions A, B and C of high-grain concentrate.
Enabling technologies for AI empowered 6G massive radio access networks
Md. Shahjalal,Woojun Kim,Waqas Khalid,Seokjae Moon,Murad Khan,ShuZhi Liu,Suhyeon Lim,Eunjin Kim,Deok-Won Yun,Joohyun Lee,Won-Cheol Lee,Seung-Hoon Hwang,Dongkyun Kim,Jang-Won Lee,Heejung Yu,Youngchul S 한국통신학회 2023 ICT Express Vol.9 No.3
Predictably, the upcoming six generation (6G) networks demand ultra-massive interconnectivity comprising densely congested sustainable small-to-tiny networks. The conventional radio access network (RAN) will be redesigned to provide the necessary intelligence in all areas to meet required network flexibility, full coverage, and massive access. In this respect, this paper focuses on intelligent massive RAN (mRAN) architecture and key technologies fulfilling the requirements. Particularly, we investigate potential AI algorithms for network and resource management issues in 6G mRAN. Furthermore, we summarize the research issues in edge technologies and physical layer intelligence on 6G network architecture.
Application-Based Comparative Performance Analysis of Visible Light Communication Technologies
Moh. Khalid Hasan,Md. Shahjalal,Mostafa Zaman Chowdhury,Yeong Min Jang 한국통신학회 2019 한국통신학회 학술대회논문집 Vol.2019 No.1
Currently, communications using optical spectrum has become extremely potential as it can be utilized as congruent complementary of the radio-frequency-based technologies. Using visible light for communication can provide high data rate utilizing the high flickering rates of currently available lightemitting diodes (LED). Visible light communication (VLC) technologies are characterized by the receiver types. Two types of receivers are available to receive data from LEDs: photo detector and image sensors of camera. In this paper, we briefly investigate the performance of different VLC technologies considering respective receiver-types. We perform our analysis based on different service scenarios. Simulation results shows that PD-based communication achieves a low signal-to-noiseplus- interference ratio compared to the image sensor-based communication. However, the overall capacity is higher for PD.