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Low-power and area-optimized VLSI implementation of AES coprocessor for Zigbee system

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The Journal of China Universities of Posts and Telecommunications 2009年第3期16卷 89-94页

作者： LI Zhen-rong ZHUANG Yi-qi zhang chao jin Gang Key Laboratory of the Ministry of Education for Wide Band-Gap Semiconductor Materials and Devices Xidian University Xi'an 710071 China

A low-power and low-cost advanced encryption standard （AES） coprocessor is proposed for Zigbee system-on-a-chip （SoC） design. The cost and power consumption of the proposed AES coprocessor are reduced considerably by optimizing the architectures of SubBytes/InvSubBytes and MixColumns/InvMixColumns, integrating the encryption and decryption procedures together by the method of resource sharing, and using the hierarchical power management strategy based on finite state machine （FSM） and clock gating （CG） technologies. Based on SMIC 0.18 μm complementary metal oxide semiconductor （CMOS） technology, the scale of the AES coprocessor is only about 10.5 kgate, the corresponding power consumption is 69.1 μW/MHz, and the throughput is 32 Mb/s, which is reasonable and sufficient for Zigbee system. Compared with other designs, the proposed architecture consumes less power and fewer hardware resources, which is conducive to the Zigbee system and other portable devices.

关键词： Zigbee AES architecture encryption decryption application specific integrated circuit (ASIC)

EARLY RECOGNITION OF INTERNET TRAFFIC BASED ON SIGNATURE INSPECTION

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Journal of Electronics(China) 2010年第2期27卷 230-236页

作者： Niu Xiaona Guo Yunfei zhang jin Wang chao National Digital Switching System Engineering ＆ Technology Research Center （ NDSC） Zhengzhou 450002 China

The accurate and efficient classification of Internet traffic is the first and key step to ac-curate traffic management,network security and traffic analysis. The classic ways to identify flows is either inaccurate or inefficient,which are not suitable to be applied to real-time online classification. In this paper,we originally presented an early recognition method named Early Recognition Based on Deep Packet Inspection (ERBDPI) based on deep packet inspection,after analyzing the distribution of payload signature between packets of a flow in detail. The basic concept of ERBDPI is classifying flows based on the payload signature of their first some packets,so that we can identify traffic at the be-ginning of a flow connection. We compared the performance of ERBDPI with that of traditional sampling methods both synthetically and using real-world traffic traces. The result shows that ERBDPI can get a higher classification accuracy with a lower packet sampling rate,which makes it suitable to be applied to accurate real-time classification in high-speed links.

关键词： Traffic classification Packet sampling Payload signature inspection Early recognition

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助熔剂法合成Gd_2O_2S∶Tb荧光粉

华东理工大学学报（自然科学版） 2006年第8期32卷 943-947页

作者：王飞张金朝宋鹂华东理工大学无机材料系上海200237

采用共沉淀法制备前驱体,再加入助熔剂煅烧合成Gd2O2S∶Tb荧光粉,并对制备的荧光粉样品的晶体结构及发光性能进行了系统研究。结果表明:助熔剂的选择对Gd2O2S∶Tb荧光粉合成影响显著;当L i2CO3与L i3PO4添加量的摩尔比为2∶1时发光亮度... 详细信息

采用共沉淀法制备前驱体,再加入助熔剂煅烧合成Gd2O2S∶Tb荧光粉,并对制备的荧光粉样品的晶体结构及发光性能进行了系统研究。结果表明:助熔剂的选择对Gd2O2S∶Tb荧光粉合成影响显著;当L i2CO3与L i3PO4添加量的摩尔比为2∶1时发光亮度最大,且颗粒分布较均匀;当助熔剂的质量分数为0.35时发光性能最好。

关键词：荧光粉 Gd2O2S:Tb 助熔剂晶体结构发光性能

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化学共沉淀法制备纳米In_2O_3粉末

华东理工大学学报（自然科学版） 2006年第1期32卷 69-71,80页

作者：田甜张金朝宋鹂华东理工大学材料科学与工程学院上海200237

纳米In2O3粉末是一种用途广泛的多功能材料。以金属铟为原料,采用化学共沉淀法制得了氢氧化铟沉淀物。经过干燥,并且在不同温度下煅烧,可以制得纳米In2O3粉末。运用差热分析(DTA)、X射线衍射(XRD)、透射电镜(TEM)、电阻测试等观测手段... 详细信息

纳米In2O3粉末是一种用途广泛的多功能材料。以金属铟为原料,采用化学共沉淀法制得了氢氧化铟沉淀物。经过干燥,并且在不同温度下煅烧,可以制得纳米In2O3粉末。运用差热分析(DTA)、X射线衍射(XRD)、透射电镜(TEM)、电阻测试等观测手段对粉末进行了表征。比较系统地研究了热处理温度对粉末性能的影响,得出最适宜的热处理温度为700°C。

关键词：纳米In2O3粉末化学共沉淀法粉末制备粉末性能热处理温度

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面向海岛环境的海雾能见度监测系统应用研究

传感技术学报 2018年第8期31卷 1287-1294页

作者：张超金光江先亮宁波大学信息科学与工程学院浙江宁波315211

随着无线传感网技术的日益成熟,以及对海岛资源探索的需求,利用无线传感网监测海岛气象信息逐渐受到关注。本文设计实现了低成本的海雾能见度监测系统,可在海岛等崎岖地域组网工作。系统利用低成本传感器,实时采集温湿、风速等气象参数... 详细信息

随着无线传感网技术的日益成熟,以及对海岛资源探索的需求,利用无线传感网监测海岛气象信息逐渐受到关注。本文设计实现了低成本的海雾能见度监测系统,可在海岛等崎岖地域组网工作。系统利用低成本传感器,实时采集温湿、风速等气象参数,获取同一时刻、地点的能见度数值,通过Z-score归一化方法进行数据校准,并使用人工神经网络结合支持向量机的方法训练模型,以收集的监测数据作为输入,获得较高精度的能见度输出。大量实验表明该系统可在地域偏远、传统方法难以奏效的场景下,实现较高精度的能见度监测应用。

关键词：无线传感网海雾能见度海岛环境监测模型

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草酸钴对钴蓝颜料性能的影响

华东理工大学学报（自然科学版） 2008年第4期34卷 533-536页

作者：黄明雯宋鹂张金朝华东理工大学无机材料系上海200237

分别以草酸和草酸铵为沉淀剂,采用液相沉淀法制备了草酸钴前驱体,采用高温固相烧结法,以草酸钴为原料制备钴蓝颜料,研究了原料的粒度和配比等对钴蓝颜料性能的影响。结果表明:用草酸铵作沉淀剂制得的草酸钴的粒度小且均匀;将粒径为1.1μ... 详细信息

分别以草酸和草酸铵为沉淀剂,采用液相沉淀法制备了草酸钴前驱体,采用高温固相烧结法,以草酸钴为原料制备钴蓝颜料,研究了原料的粒度和配比等对钴蓝颜料性能的影响。结果表明:用草酸铵作沉淀剂制得的草酸钴的粒度小且均匀;将粒径为1.1μm的草酸钴和10.9μm的氢氧化铝按质量比46.0∶54.0配料,在1 200°C下煅烧2 h,可制得粒径为1μm左右、反射率R450=68.4%、R600=6.9%,ΔR=61.5%的钴蓝颜料。

关键词：草酸钴粒度液相沉淀法钴蓝反射率

MicroRNA-34a contributes to the protective effects of glucagon-like peptide-1 against lipotoxicity in INS-1 cells

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Chinese Medical Journal 2012年第23期125卷 4202-4208页

作者： HAN Yu-bing WANG Min-nan LI Qiang GUO Lin YANG Yu-mei LI Peng-jie WANG Wei zhang jin-chao Department of Endocrinology and Metabolism Second Affiliated Hospital of Harbin Medical University Harbin Heilongjiang 150086 China Province Key Laboratory of Hormonal and Endocrine Diseases Second Affiliated Hospital of Harbin Medical University Harbin Heilongjiang 150086 China

Background Glucagon-like peptide-1 （GLP-1） reduces fatty acid-induced beta-cell lipotoxicity in diabetes; however, the explicit mechanisms underlying this process are not fully understood. This study was designed to investigate the involvement of microRNA, which regulates gene expression by the sequence-specific inhibition of mRNA transcription in the GLP-1 mediation of beta-cell function. Methods The cell viability and apoptosis were determined using an methyl thiazoleterazolium （MTT） assay and flow cytometry. The expression of genes involved in beta-cell function, including microRNA-34a and sirtuin 1, were investigated using real-time PCR. The underlying mechanisms of microRNA-34a were further explored using cell-transfection assays. Results A 24-hours incubation of INS-1 cells with palmitate significantly decreased cell viability, increased cell apoptosis and led to the activation of microRNA-34a and the suppression of sirtuin 1. A co-incubation with GLP-1 protected the cells against palmitate-induced toxicity in association with a reduction in palmitate-induced activation of microRNA-34a. Furthermore, palmitate-induced apoptosis was significantly increased in cells that were infected with microRNA-34a mimics and decreased in cells that were infected with microRNA-34a inhibitors. Conclusion MicroRNA-34a is involved in the mechanism of GLP-1 on the modulation of beta-cell growth and survival.

关键词： Glucagon-likepeptide-1 palm#ate apoptosis MicroRNA sirtuin 1

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准神铁路神木北地区接轨方案研究

铁道标准设计 2013年第1期33卷 39-41,65页

作者：张金超中铁工程设计咨询集团有限公司郑州设计院郑州450001

结合神木北地区既有铁路概况及改扩建规划情况,对准神铁路南端接轨神朔线方案、神延线方案,从工程技术经济等方面进行了方案优缺点分析和比较,确定了采用接轨神延线店塔车站方案。

关键词：准神铁路接轨方案神延线

氨·环己胺·羧酸根合铂(Ⅱ)类配合物的合成、抗肿瘤活性和与DNA的键合水平(英文)

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无机化学学报 2006年第5期22卷 823-831页

作者：张金超申勇杨梦苏河北大学化学与环境科学学院化学系保定071002 香港城市大学生物及化学系

本工作设计合成了6种新型氨·环己胺·羧酸根合铂!类配合物[Pt(NH3)(NH2)X2](a￣f)｛其中,X=CH3COO-(乙酸根),CH2ClCOO-(氯乙酸根),C6H5-COO-(苯甲酸根),p-CH3O-C6H4-COO-(对甲氧基苯甲酸根),p-CH3-C6H4-COO-(对甲基苯甲酸根),p-NO2-C6H4-COO-(对硝基苯甲酸根)｝。通过元素分析、摩尔电导、红外光谱、紫外光谱和1H核磁共振谱对配合物进行了表征。通过MTT法研究了配合物的体外抗肿瘤活性,通过流式细胞仪以及等离子体质谱研究了配合物对细胞周期的影响以及与细胞DNA的键合量;体外抗肿瘤活性测试表明,配合物(c￣f)对EJ和HL-602种肿瘤细胞表现出好的活性,而且配合物(c),(d)和(e)对EJ和HL-602种肿瘤细胞的活性高于临床用药顺铂;配合物(a￣f)对MCF-7、HCT-8和BGC-8233种肿瘤细胞的活性低于顺铂;它们能阻止HL-60和EJ细胞G2+M→G1期的进行;配合物(a￣f)与HL-60和EJ细胞的DNA键合量从大到小的顺序为:c>d>e>cisplatin>f>a>b。

关键词：混胺铂(Ⅱ)配合物抗肿瘤活性经典构效关系细胞周期 Pt-DNA键合