检索结果-南通市图书馆

Dynamic Integrity Measurement Model Based on vTPM

在线全文

学校读者我要写书评

暂无评论

China Communications 2018年第2期15卷 88-99页

作者： Ruizhong du wangyang Pan Junfeng Tian Cyberspace Security and Computer College Baoding 071002China Key Laboratory on High Trusted Information System in Hebei Province Baoding 071002 China

With the development of cloud computing, virtualization technology has been widely used in our life. Meanwhile, it became one of the key targets for some attackers. The integrity measurement in virtual machine has become an urgent problem. Some of the existing virtualization platform integrity measurement mechanism introduces the trusted computing technology, according to a trusted chain that the Trusted Platform Module(TPM) established for trusted root to measure the integrity of process in static. But this single chain static measurement cannot ensure the dynamic credible in platform running. To solve the problem that the virtual trusted platform can not guarantee the dynamic credibility, this paper put forward Dynamic Integrity Measurement Model(DIMM) based on virtual Trusted Platform Module(v TPM) which had been implemented with typical virtual machine monitor Xen as an example. DIMM combined with virtual machine introspection and event capture technology to ensure the security of the entire user domain. Based on the framework, this paper put forward Self-modify dynamic measurement strategy which can effectively reduce the measurement frequency and improve the measurement performance. Finally, it is proved that the validity and feasibility of the proposed model with comparison experiments.

关键词： Xen trusted chain integrity mea-surement Self-modify measurement strategy dynamic integrity

在线全文

学校读者我要写书评

暂无评论

对我军装备建设信息化的思考

装备学院学报 2012年第3期23卷 98-101页

作者：杜汪洋巩伟刘国庆吴艳梅装备学院装备采办系

装备建设信息化是装备信息化建设和军队信息化建设的重要组成部分，装备信息资源是一种重要的战略资源，装备信息资源规划是装备建设信息化的基础。系统分析了我军武器装备建设信息化存在的问题，从5个方面提出了相关的对策建议，旨在... 详细信息

装备建设信息化是装备信息化建设和军队信息化建设的重要组成部分，装备信息资源是一种重要的战略资源，装备信息资源规划是装备建设信息化的基础。系统分析了我军武器装备建设信息化存在的问题，从5个方面提出了相关的对策建议，旨在加强我军的装备建设信息化研究，提高装备建设信息化效益和装备建设质量。

关键词：信息资源规划装备建设信息化

在线全文

学校读者我要写书评

暂无评论

苗药课币有水溶性黄酮的纯化

贵州科学 2020年第5期38卷 15-18页

作者：赵学芬何席呈杜汪洋谭波张婷吴珊珊杜江贵州中医药大学贵州贵阳550025 贵州省苗医药重点实验室贵州贵阳550025 贵州中医药大学第二附属医院贵州贵阳550025

目的:优选聚酰胺树脂纯化课币有(kod bit vud)中水溶性黄酮的工艺条件。方法:采用紫外分光光度法,以芹菜素含量为考察指标,研究聚酰胺树脂在动态条件下,树脂吸附和洗脱水溶性黄酮的行为,并筛选出纯化课币有(kod bit vud)水溶性黄酮的最... 详细信息

目的:优选聚酰胺树脂纯化课币有(kod bit vud)中水溶性黄酮的工艺条件。方法:采用紫外分光光度法,以芹菜素含量为考察指标,研究聚酰胺树脂在动态条件下,树脂吸附和洗脱水溶性黄酮的行为,并筛选出纯化课币有(kod bit vud)水溶性黄酮的最优工艺参数。结果:采用二次上样的方法,上样原液共9个柱体积,以60%乙醇溶液洗脱5个柱体积,课币有(kod bit vud)水溶性黄酮,纯度从0.54%提高到18.86%,纯度提高了34倍。结论:经过聚酰胺树脂纯化,课币有(kod bit vud)水溶性黄酮得到了明显提高,这为进一步开展其药理活性研究积累了一定基础。

关键词：课币有(kod bit vud) 聚酰胺树脂水溶性黄酮

Analysis of photocatalytic degradation of polyamide microplastics in metal salt solution by high resolution mass spectrometry

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第5期139卷 473-482页

作者： Yunjin Zhong Lebing Zhuo wangyang Lu National Engineering Lab for Textile Fiber Materials&Processing Technology(Zhejiang) School of Materials Science&EngineeringZhejiang Sci-Tech UniversityHangzhou 310018China

Microplastic pollution has become one of the most concerned focuses in the *** many treatment methods,photocatalysis is considered to be one of the most environmentally friendly *** this work,the photodegradation behavior of polyamide microplastics is studied by using polyamide 6(PA6)as model microplastics and FeCl_(3) as *** is hoped that the PA6 fiber can be effectively degraded by utilizing the strong oxidizing active species that can be produced after FeCl_(3) is irradiated in *** results shows that PA6 fiber can be almost completely degraded after 10 days of irradiation in FeCl_(3) aqueous solution,indicating that it is promising to use this new method to solve the problem of PA6type *** addition,the chain scission mechanism and degradation process of PA6 are analyzed in detail by ultra-high performance liquid chromatography-tandem mass spectrometry(UPLC-MS),which provides a new insight for the study of polymer degradation mechanism.

关键词： FeCl_(3) Photocatalysis Polyamide 6 Chain scission

Sichuan dialect speech recognition with deep LSTM network

在线全文

学校读者我要写书评

暂无评论

Frontiers of Computer Science 2020年第2期14卷 378-387页

作者： wangyang YING Lei ZHANG Hongli DENG Machine Intelligence Laboratory College of Computer ScienceSichuan UniversityChengdu 610065China Education and Information Technology Center China West Normal UniversityNanchong 637002China

In speech recognition research,because of the variety of languages,corresponding speech recognition systems need to be constructed for different *** in a dialect speech recognition system,there are many special words and oral language *** addition,dialect speech data is very ***,constructing a dialect speech recognition system is *** paper constructs a speech recognition system for Sichuan dialect by combining a hidden Markov model(HMM)and a deep long short-term memory(LSTM)*** the HMM-LSTM architecture,we created a Sichuan dialect dataset and implemented a speech recognition system for this *** with the deep neural network(DNN),the LSTM network can overcome the problem that the DNN only captures the context of a fixed number of information ***,to identify polyphone and special pronunciation vocabularies in Sichuan dialect accurately,we collect all the characters in the dataset and their common phoneme sequences to form a ***,this system yields a 11.34%character error rate on the Sichuan dialect evaluation *** far as we know,it is the best performance for this corpus at present.

关键词： speech recognition Sichuan dialect HMMDNN HMM-LSTM Sichuan dialect lexicon

通络止痛方对人膝骨关节炎滑膜炎症细胞上清IL-1β及TNF-α的影响

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

辽宁中医杂志 2017年第5期44卷 1040-1042页

作者：杨黎黎王庆甫王欢张栋王伟利丁昊彬甘稳徐铭康杜汪洋郭玉茹北京中医药大学第三附属医院北京100029

目的:观察通络止痛方对人膝骨关节炎滑膜炎症细胞上清白细胞介素-1β(IL-1β)和肿瘤坏死因子-α(TNF-α)含量的影响。方法:取本院行全膝关节置换术患者术中废弃滑膜组织,经I型胶原酶消化后进行细胞培养,取上清液,加入不同浓度通络止痛... 详细信息

目的:观察通络止痛方对人膝骨关节炎滑膜炎症细胞上清白细胞介素-1β(IL-1β)和肿瘤坏死因子-α(TNF-α)含量的影响。方法:取本院行全膝关节置换术患者术中废弃滑膜组织,经I型胶原酶消化后进行细胞培养,取上清液,加入不同浓度通络止痛方干预,分为:(1)高浓度组:2.5 mg/m L;(2)中浓度组:0.25 mg/m L;(3)低浓度组:0.025 mg/m L;(4)对照组:0 mg/m L。应用酶联免疫吸附法检测观察各浓度组对上清液干预后IL-1β及TNF-α的浓度。结果:高中低浓度组较对照组上清液中IL-1β及TNF-α含量明显降低(P<0.05),且下降的幅度与通络止痛方的浓度呈正相关(IL-1β:r=0.38,P<0.05;TNF-α:r=0.41,P<0.05)。IL-1β及TNF-α的高浓度组达到抑制高峰,与中、低浓度组比较,差异亦有统计学意义(P<0.05)。结论:通络止痛方对人膝骨关节炎滑膜炎症细胞上清IL-1β及TNF-α有抑制作用,随浓度增高,抑制程度越明显。

关键词：通络止痛方滑膜炎症细胞 IL-1β TNF-α

Image analysis and machine learning-based malaria assessment system

在线全文

学校读者我要写书评

暂无评论

Digital Communications and Networks 2022年第2期8卷 132-142页

作者： Kyle Manning Xiaojun Zhai wangyang Yu School of Computer Science and Electronic Engineering University of EssexColchesterCO43SQUK Key Laboratory of Modern Teaching Technology Ministry of EducationSchool of Computer Science Shaanxi Normal UniversityXi'anChina

Malaria is an important and worldwide fatal disease that has been widely reported by the World Health Organization(WHO),and it has about 219 million cases worldwide,with 435,000 of those *** common malaria diagnosis approach is heavily reliant on highly trained experts,who use a microscope to examine the ***,there is a need to create an automated solution for the diagnosis of *** of the main objectives of this work is to create a design tool that could be used to diagnose malaria from the image of a blood *** this paper,we firstly developed a graphical user interface that could be used to help segment red blood cells and infected cells and allow the users to analyze the blood ***,a Feed-forward Neural Network(FNN)is designed to classify the cells into two *** achieved results show that the proposed techniques can be used to detect malaria,as it has achieved 92%accuracy with a database that contains 27,560 benchmark images.

关键词： Malaria assessment system Image analysis Image segmentation Artificial intelligence

Seismic Velocity Structure and Composition of the Continental Crust of Eastern China

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2004年第1期78卷 291-297页

作者： wangyang CAOJiamin ZHUJieshou GuangzhouInstituteofGeochemistry ChineseAcademyofSciencesGuangzhouGuangdong510640 SchoolofEarthSciencesandResources ChinaUniversityofGeosciencesBeijing100083 DepartmentofGeophysics ChengduUniversityofTechnologyChengduSichuan610059

On the basis of a one-by-one latitude-longitude grid three-dimensional seismic velocity model, the crustal P-wave velocity structure in eastern China (105-125°E and 18-41°N) is obtained, and a set of geotherms for each grid is established for P-T correction on P-wave velocities. The average depths of sub-crustal layers and their average P-wave velocities of 18 tectonic units in eastern China are exhibited. Our result presents a 32-34 km thick crust beneath eastern China, which is thinner than previous studies, with an average velocity of 6.54 km/s, corresponding to a 5 kg/m3 variation in crustal mean density. The thicker upper but thinner middle and lower crust results in a lower average seismic velocity of eastern China. An intermediate crustal composition with a SiO2 content of 59.7 wt% has been estimated. However, there exists a significant lateral variation in the crustal structures among the tectonic units of eastern China. The structure and composition features of some regions in eastern China indicate that extension has played an important role in the continental crust evolution of eastern China.

关键词： crustal composition seismic velocity structure geotherm density eastern China

Landscape eco-environmental research on littoral zone in China

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2004年第3期16卷 490-496页

作者： PENGJian wangyang-lin JINGJuan LIWei-feng DINGYan CollegeofEnvironmentalSciences PekingUniversityBeijing100871China

Littoral zone is a special land/ landscape type. As an important kind of land resource in support, the use of littoral zone is vital to eastern coastal areas in China. And the research on littoral zone relates to the key theory of landscape ecology. Based on the theory of landscape ecology, the littoral zone was divided into four types: mud flat, sand beach, bench, and biological flat. The distribution of each type in China is pointed out. As a typical open system, littoral zone has six landscape ecological characteristics: (1) high sensitivity to disturbance; (2) distinct edge effect; (3) spatial aggregation of natural resources; (4) frequently spatial oscillation; (5) obviously spatial heterogeneity; and (6) noticeably spatial differentiation. Some proposals are also put forward on the land use and development of littoral zone for environmental protection and environmental management.

关键词： landscape eco environment littoral zone China