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中华医学会小儿外科学分会第十八次全国小儿外科学术年会暨第十二届全国小儿外科中青年医师学术研讨会纪要

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中华小儿外科杂志 2024年第2期45卷 190-191页

作者：方一圩宋宏程张潍平倪鑫国家儿童医学中心首都医科大学附属北京儿童医院泌尿外科北京100045

2023年11月22日至11月26日,由中华医学会、中华医学会小儿外科学分会主办,厦门市医学会、复旦大学附属儿科医院厦门医院/厦门市儿童医院承办的中华医学会小儿外科学分会第十八次全国小儿外科学术年会暨第十二届全国小儿外科中青年医师... 详细信息

2023年11月22日至11月26日,由中华医学会、中华医学会小儿外科学分会主办,厦门市医学会、复旦大学附属儿科医院厦门医院/厦门市儿童医院承办的中华医学会小儿外科学分会第十八次全国小儿外科学术年会暨第十二届全国小儿外科中青年医师学术研讨会在福建省厦门市召开。本次会议主题为:科技创新、传承发展。

关键词：中华医学会小儿外科学中青年医师儿童医院福建省厦门市研讨会纪要学术年会第十二届

暗褐脉柄牛肝菌产淀粉水解酶最适温度及最适初始pH研究

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北方园艺 2024年第12期 122-126页

作者：高锋许欣景杨天伟刘静方艺伟张春霞云南省热带作物科学研究所植物保护与微生物利用研究中心云南景洪666100

以20113和21014暗褐脉柄牛肝菌菌株为试材,采用刚果红、卢戈氏碘液变色圈法,研究了温度、pH对暗褐脉柄牛肝菌产淀粉水解酶能力的影响,以期为研发暗褐脉柄牛肝菌淀粉高效利用方案提供参考依据。结果表明:刚果红变色圈试验中,随着温度升高... 详细信息

以20113和21014暗褐脉柄牛肝菌菌株为试材,采用刚果红、卢戈氏碘液变色圈法,研究了温度、pH对暗褐脉柄牛肝菌产淀粉水解酶能力的影响,以期为研发暗褐脉柄牛肝菌淀粉高效利用方案提供参考依据。结果表明:刚果红变色圈试验中,随着温度升高,菌丝生长速率、淀粉水解酶指数逐渐升高,并在28℃达到最大值,随后逐渐下降;卢戈氏碘液变色圈试验中,随着温度升高,菌丝生长速率、淀粉水解酶指数逐渐升高,并分别在30℃和28℃达到最大值,随后逐渐降低;随着初始pH逐渐升高,淀粉水解酶指数逐渐升高并在pH 6.5时达到最大值,pH 7.0~8.0变化不显著;随着pH升高,21014菌株生长速率逐渐降低,20113菌株生长速率无显著变化。综上,暗褐脉柄牛肝菌产淀粉水解酶最适宜温度为30℃,最适初始pH为6.5。

关键词：暗褐脉柄牛肝菌淀粉水解酶酶指数温度 pH

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Authenticating QoS-Guaranteed Multicast Route Discovery for Ad hoc Networks

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China Communications 2007年第1期4卷 48-55页

作者： Mingxi, Yang Layuan, Li yiwei, fang Wuhan Univ Technol Sch Comp Sci & Tech Wuhan 430070 Peoples R China Huazhong Univ Sci & Technol Dept Elect & Inf Eng Wuhan 430074 Peoples R China

This paper presents SEQMRAN,a novel secure efficient QoS multicast route discovery protocol for mobile ad hoc *** protocol relies entirely on one-time signature mechanism,HORSEI,with very efficient signing and verifying,and we do this by improving the HORSE protocol through the introduction of intermediate hash *** main purpose of SEQMRAN is to provide source authentication for QoS multicast routing discovery messages in MANET by constructing multicast tree with QoS and authentication constrains in mobile ad hoc *** performance measure of SEQMRAN is evaluated using network simulator *** results represent that SEQMRAN produces less end-to -end packet latency than RSA public key encryption based secure routing scheme,and it is a feasible approach to securing multicast routing with multiple QoS constrains for mobile ad hoc networks.

关键词： ad hoc maodv QoS security route

Design and implementation of IEEE 802.11 Frame Generator based on FPGA

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微计算机信息 2007年第20期 163-164页

作者： fang yiwei fang HUAJING

IEEE 802.11, the most popular standard, defines the protocols which covers all of Ethernet based wireless communication. This paper presented an implementation of IEEE 802.11 Frame Generator, which used FPGA as a hardware platform. This generator constructs the 802.11 frame and supplied it to DSSS as signal to be sent. There are 3 modules in this design. The 1st is the global control module, the 2nd module is CRC- 32 check and the 3rd is used to produce frame serial number. The characteristic of this de- sign is that the signal process and the transmission are made at the same time, i.e. real time processing. That is important to the wireless network device, which has narrower bandwidth and lower process energy. The Verilog HDL codes, block diagram of the whole system, and the simulation results were described in this paper.

关键词： FPGA 802.11 protocol frame generator

Securing Multicast Route Discovery for Mobile Ad Hoc Networks

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Wuhan University Journal of Natural Sciences 2007年第1期12卷 189-192页

作者： YANG Mingxi LI Layuan fang yiwei School of Computer Science and Technology WuhanUniversity of Technology Wuhan 430070 Hubei China Department of Electronics and Information Engineering Huazhong University of Science and Technology Wuhan 430074Hubei China

This paper presents SMRAN, a novel securing multicast route discovery scheme for mobile ad hoc networks. The scheme relies entirely on hash chains based one-time signature mechanism, HORSEI, with very efficient signing and verifying, and we do this by improving the HORSE protocol through the introduction of intermediate hash joints. The main purpose of SMRAN is to provide source authentication for multicast routing discovery messages in mobile ad hoc networks. SMRAN will construct multicast tree with authentication constrains in ad hoc networks. The performance measure of SMRAN is evaluated using simulator NS2. The results represent that SMRAN produces less end-to-end packet latency than public key based secure routing scheme, and it is a feasible approach to securing multicast routing for mobile ad hoc networks.

关键词： security multicast route mobile ad hoc

“隐秩序”画像:城市精细化治理的机制设计——以复杂适应系统理论为分析视角

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求实 2022年第6期 58-74,M0005页

作者：余敏江方熠威同济大学政治与国际关系学院上海200092

作为复杂的巨系统,城市治理须依托“技术”和“制度”双轮驱动来实现绩效的精细化产出,但两者之间的互动机理与秩序安排仍有待厘清。复杂适应系统理论为破解这一难题提供了密钥。以城市“复杂性”为逻辑起点,设计兼顾系统静态结构与动... 详细信息

作为复杂的巨系统,城市治理须依托“技术”和“制度”双轮驱动来实现绩效的精细化产出,但两者之间的互动机理与秩序安排仍有待厘清。复杂适应系统理论为破解这一难题提供了密钥。以城市“复杂性”为逻辑起点,设计兼顾系统静态结构与动态运行之间相互关联的治理机制,描绘城市的“隐秩序”画像。在制度架构层面,城市的人民性回归引领了城市主体的共识目标达成,织就了崭新的行动者网络;在技术要素层面,搭建技术嵌入与技术评估的双轨耦合渠道,形成了对技术应用过程的整体包络;在流程环节层面,通过治理需求的精准识别、治理资源的靶向供给以及治理实效的即时反馈,聚合了城市系统闭路循环式的涌现反应,最终建立趋向城市善治的精细化治理机制。

关键词：城市治理精细化治理复杂适应系统人民性行动者网络技术嵌入技术评估

情感动员与韧性提升:不确定性风险下城市社区治理的行动逻辑——基于上海市L社区的考察与分析

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探索 2023年第4期 115-126页

作者：余敏江方熠威同济大学政治与国际关系学院上海200092

现代性的“自反”引致人类社会的不确定性风险频繁涌现。全球疫情、气候变暖、自然灾害等风险与技术滥用、恐怖主义以及国家间冲突甚至战争等风险的融合使得人类社会越来越陷入一种高度不可感知性和深度复杂性的境遇中。作为城市社会的... 详细信息

现代性的“自反”引致人类社会的不确定性风险频繁涌现。全球疫情、气候变暖、自然灾害等风险与技术滥用、恐怖主义以及国家间冲突甚至战争等风险的融合使得人类社会越来越陷入一种高度不可感知性和深度复杂性的境遇中。作为城市社会的基础单元,社区亟需形成动静相宜、张弛有度的韧性治理模式方能应对不确定性风险的挑战。然而,传统的城市社区治理依然遵循“刚性”的逻辑理路,屡陷于“工具—价值”与“结构—功能”的重层张力之中,梗阻着韧性社区的高阶进化。考察上海市L社区的治理实践发现,理性化的政策动员模式易错配“制度—生活”的供求关系,一定程度上制约了治理参与的活力。情感动员则另辟蹊径地揭示了合作导向行为的发生机制,通过“情感认同—情感支持—情感能量”的逻辑链条,构建以工具理性与价值理性融通为特征的社区治理体系。情感动员塑造了一个公共精神充盈、公共秩序有序和行动能力适配的社区共同体,为社区韧性提升提供了组织和行动基础。

关键词：不确定性风险情感动员韧性社区城市社区治理

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重度尿道下裂的手术进展

中华小儿外科杂志 2022年第9期43卷 854-859页

作者：方一圩宋宏程首都医科大学附属北京儿童医院泌尿外科北京100045

重度尿道下裂尿道缺损长,阴茎下弯重,手术难度大,术后并发症高,本文就重度尿道下裂术中阴茎下弯的矫正、尿道成形术的选择及术后并发症进行综述,以期在理解重度尿道下裂的基础上,提高治疗效果。

关键词：尿道下裂阴茎下弯尿道成形术

Arc and Droplet Behaviors in Horizontal Short-Arc Pulsed Gas Metal Arc Welding of 9%Ni Steel with ERNiCrMo-3 Welding Wire

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Journal of Shanghai Jiaotong university(Science) 2024年第2期29卷 361-376页

作者：刘轶玮华学明吴东升李芳蔡艳王欢杨修荣 Shanghai Key Laboratory of Material Laser Processing and Modification Shanghai Jiao Tong UniversityShanghai 200240China Hudong-Zhonghua Shipbuilding(Group)Co. Ltd.Shanghai 200129China Zhuhai Cowin Welding Equipment&Consumables Co. Ltd.Zhuhai 519015GuangdongChina

Short-arc pulsed gas metal arc welding(P-GMAW)was used to solve the dificulties of molten pool spreading and droplet transfer of Ni-based welding *** of short-circuit current was used to reduce *** length stabilizer was used to acquire a proper and stable arc length maintained at the critical position where short circuit starts to ***-arc P-GMAW with or without arc length stabilizer was *** droplet transfer,arc behaviors and weld bead profiles were investigated and compared based on the high-speed photography and observation of weld *** the arc length stabilizer was deactivated,the arc length was unstable and too *** droplet transfer mode was mainly short circuit partial transfer,with only a small part of the droplet transferred into the molten pool,with the characteristics of no obvious necking,a few spatters,small droplet impact,long short circuit duration and high short-circuit *** was also a small proportion of short circuit complete transfer with obvious necking,larger droplet impact,shorter short-circuit duration and lower short-circuit *** arc length stabilizer,droplet transfer modes were short circuit complete transfer and spray *** spray transfer had the largest droplet impact,no short circuit and no *** the arc length stabilizer activated,a deep penetration,a high penetration ratio,a small reinforcement and a large reinforcement factor were *** provides an innovative method to solve the difficulties of droplet transfer and molten pool spreading and eliminate the incomplete fusion in the GMAW of 9%Ni steel with nickel-based alloy welding wire.

关键词： droplet transfer arc behaviors weld bead formation short-arc pulsed gas metal arc welding(P-GMAW) high nickel alloy 9%Ni steel