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| 1 | 嗜碱芽孢杆菌C-125木糖苷酶基因的表达与酶特征鉴定(英文)显示文摘嗜碱芽孢杆菌(Bacillus halodurans)C-125菌株的基因组中,一个编码木糖苷酶的基因(BH1068)被克隆并在大肠杆菌中获得高效表达。通过全面分析纯化蛋白,确证了它的木糖苷酶功能。该酶在pH4~9的范围内保持稳定,最适pH值为中性,有较宽的最适温度(35°C~45°C),且能在45°C范围内保持稳定。这些特性使得该酶可在较为宽广的条件下对木聚糖进行酶促降解。该酶对人工合成底物对硝基苯-β-木糖苷(p-nitrophenyl-β-xylose,pNPX)的比活力为174mU/mg蛋白质,且木糖对其反馈抑制较弱(抑制常数Ki为300mmol/L)。结果显示该酶是活性较高且较耐木糖抑制的细菌源木糖苷酶。该酶与商品化的木聚糖酶一起水解山毛举木聚糖(Beechwood xylan)时显示了增效作用,且水解率可获40%。该酶最适pH为中性,对木糖耐受等特性与大多数来源于真菌、最适pH为酸性、对木糖敏感的木糖苷酶将有较好的互补。结果表明该酶在木聚糖或含木聚糖多糖的单糖化过程可能发挥重要作用。 | 梁艳丽 李兴玉 Shin Hyundong Chen R.Rachel 毛自朝 | 2009 | 生物工程学报2009，25，9： | 4 |
| 2 | Joint time delay and energy optimization with intelligent overclocking in edge computing显示文摘With the rapid growth of user equipment(UE),the amount of data transmitted over networks has become enormous,exerting immense pressure on backbone networks and central cloud infrastructures.Simultaneously,corresponding applications requiring high energy consumption and low latency have multiplied the requirements for UE.Mobile edge computing(MEC)has been proposed to support the offloading of UE tasks to edge clouds for execution.The implementation of MEC requires fast data transmission between UE and edge servers,and the emerging 5G network appears to render this technology possible.In this paper,considering a large number of UE,a fixed MEC server,and an advanced intelligent network,we suggest an intelligent overclocking mechanism for the MEC server that operates for an intelligently calculated period to allow it to leverage more computing power without introducing additional hardware resources for a certain period of time.We jointly manage task offloading,server resource allocation,and overclocking to minimize the system-wide computation overhead and other risks.The proposed optimization problem is a mixedinteger nonlinear programming problem that is divided into three subproblems:offloading decision,resource allocation,and overclocking decision.We solve these subproblems using non-convex techniques and provide an iterative algorithm to obtain a heuristic solution for the original problem.Finally,simulation results show that the overclocked MEC server has lower system-wide computation overhead,faster task processing,and more offloaded UE as compared with the case without overclocking. | Kehao WANG Zhenhua XIONG Lin CHEN Pan ZHOU Hyundong SHIN | 2020 | Science China(Information Sciences)2020，63，4： | 2 |
| 3 | Enabling intelligence in fog computing to achieve energy and latency reduction显示文摘Fog computing is an emerging architecture intended for alleviating the network burdens at the cloud and the core network by moving resource-intensive functionalities such as computation, communication, storage, and analytics closer to the End Users (EUs). In order to address the issues of energy efficiency and latency requirements for the time-critical Internet-of-Things (IoT) applications, fog computing systems could apply intelligence features in their operations to take advantage of the readily available data and computing resources. In this paper, we propose an approach that involves device-driven and human-driven intelligence as key enablers to reduce energy consumption and latency in fog computing via two case studies. The first one makes use of the machine learning to detect user behaviors and perform adaptive low-latency Medium Access Control (MAC)-layer scheduling among sensor devices. In the second case study on task offloading, we design an algorithm for an intelligent EU device to select its offloading decision in the presence of multiple fog nodes nearby, at the same time, minimize its own energy and latency objectives. Our results show a huge but untapped potential of intelligence in tackling the challenges of fog computing。 | Quang Duy La Mao V. Ngo Thinh Quang Dinh Tony Q.S. Quek Hyundong Shin | 2019 | Digital Communications and Networks2019，5，1： | 2 |
| 4 | Cognitive network interference显示文摘 | Rabbachin A Quek T Hyundong S | 2011 | IEEE Journal on Selected Areas in Communications2011，29，2： | 1 |
| 5 | MIMO networks:the effects of interference显示文摘 | Chiani M Win M Z Hyundong Shin | | 0，，01： | 1 |
| 6 | MIMO networks:the effects of interference显示文摘 | Chiani M Win M Z Hyundong S | 2010 | IEEE Transactions on Information Theory2010，56，1： | 1 |
| 7 | MIMO Networks: The Effects of Interference显示文摘 | Chiani M Win M Z Hyundong Shin | 2010 | IEEE Transactions on Information Theory2010，56，1： | 1 |
| 8 | Outage-optimal cooperative communications with regenerative relays显示文摘 | Aggelos Bletsas Hyundong Shin Moe Z Win | | 0，，01： | 1 |
| 9 | Capacity of multiplean-tennafading channels:spatial fading correlation,doublescat-tering,and keyhole显示文摘 | SHIN Hyundong LEE Jae Hong | 2003 | IEEE Transactions on InformationTheory2003，49，10： | 1 |
| 10 | Cooperative communications with outage-optimal opportunistic relaying显示文摘 | Bletas A Shin Hyundong Win M Z | | 0，，03： | 1 |
| 11 | Outage optimal-ity of opportunistic amplify-and-forward relaying显示文摘 | AGGELOS B HYUNDONG S MOE Z W | 2007 | IEEECommunication Letters2007，11，3： | 1 |
| 12 | Cog- nitive network interference显示文摘 | Rabbachin A Quek T Q S Shin Hyundong | 2011 | IEEE Journal on Select- ed Areas in Communications2011，29，2： | 1 |
| 13 | On the error probability of binary and M-ary signals in Nakagami-m fading channels 显示文摘 | Hyundong S Jae H L | 2004 | IEEE Trans Wireless Commun2004，52，4： | 1 |
| 14 | Gallager's exponent for MIMO channels:a reliability-rate tradeoff显示文摘 | HYUNDONG S WIN M Z | 2009 | IEEE Transactions on Communications2009，57，4： | 1 |
| 15 | Synthesis of new julohdine dyes having bithiophene derivatives for solar cell显示文摘 | Hyundong Choi Jac Kwan Lee | 2007 | Tetrahedron2007，63，： | 1 |
| 16 | Cooperative communications with outageoptimal opportunistic relaying显示文摘 | Bletsas A Shin Hyundong Win Moe Z | 2007 | IEEE Transactions on Wireless Communications2007，6，9： | 1 |
| 17 | Robust Wireless Relay Networks:Slow Power Allocation With Guaranteed Qo S显示文摘 | QUEK T Q S HYUNDONG SHIN WIN M Z | 2007 | IEEE Journal of Selected Topics in Signal Processing2007，4，1： | 1 |
| 18 | Cooperative Communications with Outage-Optimal Opportunistic Relaying显示文摘 | Bletsas A Hyundong Shin Win M Z | 2007 | IEEE Journal on Selected Areas in Communication2007，06，09： | 1 |
| 19 | Cooperative Communications with Outage-Optimal opportunistic relaying 显示文摘 | Bletsas A Shin Hyundong Win M Z | 2007 | IEEE Trans on Wireless Communications2007，6，9： | 1 |
| 20 | Cooperative com munications with outage-optimal opportunistic relaying显示文摘 | Bletsas A Hyundong S Win M Z | 2007 | IEEE Transactions on Wireless Communications2007，6，9： | 1 |
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