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Practical and privacy-preserving geo-social-based POI recommendation

Journal of Information and Intelligence 2024年第2期2卷 148-166页

作者： Qi Xu Hui Zhu Yandong Zheng Fengwei Wang le gao School of Cyber Engineering Xidian UniversityXi'an 710126China Science and Technology on Communication Networks Laboratory Shijiazhuang 050081China Faculty of Intelligent Manufacturing Wuyi UniversityJiangmen 529020China

With the rapid development of location-based services and online social networks,POI recommendation services considering geographic and social factors have received extensive ***,the vigorous development of cloud computing has prompted service providers to outsource data to the cloud to provide POI recommendation ***,there is a degree of distrust of the cloud by service *** protect digital assets,service providers encrypt data before outsourcing ***,encryption reduces data availability,making it more challenging to provide POI recommendation services in outsourcing *** privacy-preserving schemes for geo-social-based POI recommendation have been presented,but they have some limitations in supporting group query,considering both geographic and social factors,and query accuracy,making these schemes *** solve this issue,we propose two practical and privacy-preserving geo-social-based POI recommendation schemes for single user and group users,which are named GSPR-S and ***,we first utilize the quad tree to organize geographic data and the MinHash method to index social ***,we apply BGV fully homomorphic encryption to design some private algorithms,including a private max/min operation algorithm,a private rectangular set operation algorithm,and a private rectangular overlapping detection *** that,we use these algorithms as building blocks in our schemes for efficiency *** to security analysis,our schemes are proven to be secure against the honest-but-curious cloud servers,and experimental results show that our schemes have good performance.

关键词： Cloud computing Geo-social-based data MinHash POI recommendation Privacy preservation

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驾驶员无意识车道偏离识别方法

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吉林大学学报（工学版） 2017年第3期47卷 709-716页

作者：高振海 le DinhDat 胡宏宇孙翊腾吉林大学汽车仿真与控制国家重点实验室长春130022

为了改进车道偏离预警系统的工作效能,本文提出了考虑人-车-路特性的无意识车道偏离识别方法。首先,明确了无意识车道偏离识别的具体含义,将其划分为疲劳车道偏离和次任务车道偏离;其次,利用受试者工作特性曲线(ROC)确定无意识车道偏离... 详细信息

为了改进车道偏离预警系统的工作效能,本文提出了考虑人-车-路特性的无意识车道偏离识别方法。首先,明确了无意识车道偏离识别的具体含义,将其划分为疲劳车道偏离和次任务车道偏离;其次,利用受试者工作特性曲线(ROC)确定无意识车道偏离的识别时间窗口,保证了无意识偏离样本筛选的有效性;再次,以12名驾驶人为试验对象,采集并对比分析了驾驶员操纵特性、车辆运动状态和车辆与车道线相对运动状态等相关参数,并分别选取作为疲劳车道偏离和次任务车道偏离识别基本特征;最后,采用高斯混合隐马尔科夫模型(GM-HMM)构建无意识车道偏离识别模型。实验结果表明,本文方法具有较好的识别效果。

关键词：车辆工程先进驾驶辅助系统车道偏离预警无意识车道偏离高斯混合隐马尔科夫模型

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Effects of Incretin-based Therapies on Weight-related Indicators among Patients with Type 2 Diabetes: A Network Meta-analysis

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Biomedical and Environmental Sciences 2020年第1期33卷 37-47页

作者： XU Lu YU Shu Qing gao le HUANG Yi WU Shan Shan YANG Jun SUN Yi Xin YANG Zhi Rong CHAI San Bao ZHANG Yuan JI Li Nong SUN Feng ZHAN Si Yan Department of Epidemiology and Biostatistics School of Public HealthPeking UniversityBeijing 100191China Department of Mathematics and Statistics University of Maryland Baltimore CountyBaltimore MD 21250MarylandUSA National Clinical Research Center of Digestive Diseases Beijing Friendship HospitalCapital Medical UniversityBeijing 100050China The Primary Care Unit School of Clinical MedicineUniversity of CambridgeCambridge CB21TNUK Department of Endocrinology and Metabolism Peking University International HospitalBeijing 102206China Department of Clinical Epidemiology and Biostatistics McMaster UniversityHamilton L8S 4L8OntarioCanada Department of Endocrinology and Metabolism Peking University People’s HospitalBeijing 100044China

Objective To evaluate the effects of incretin-based therapies on body weight as the primary outcome,as well as on body mass index(BMI)and waist circumference(WC)as secondary *** Databases including Medline,Embase,the Cochrane Library,and ***(***)were searched for randomized controlled trials(RCTs).Standard pairwise meta-analysis and network meta-analysis(NMA)were both carried *** risk of bias(ROB)tool recommended by the Cochrane handbook was used to assess the quality of *** analysis,sensitivity analysis,meta-regression,and quality evaluation based on the Grading of Recommendations Assessment,Development,and Evaluation(GRADE)were also *** A total of 292 trials were included in this *** with placebo,dipeptidyl-peptidase IV inhibitors(DPP-4 Is)increased weight slightly by 0.31 kg[95%confidence interval(CI):0.05,0.58]and had negligible effects on BMI and *** with placebo,glucagon-like peptide-1 receptor agonists(GLP-1 RAs)lowered weight,BMI,and WC by-1.34 kg(95%CI:-1.60,-1.09),-1.10 kg/m2(95%CI:-1.42,-0.78),and-1.28 cm(95%CI:-1.69,-0.86),*** GLP-1 RAs were more effective than DPP-4 Is in lowering the three ***,the effects of GLP-1 RAs on weight,BMI,and WC were favorable.

关键词： Body mass index Body weight Diabetes mellitus Dipeptidyl-peptidase IV inhibitors Glucagon-like peptide-1 receptor agonists Network meta-analysis Waist circumference

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中国近代第一个政治学会的成立及其早期活动初探

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湘潭大学学报（哲学社会科学版） 2021年第4期45卷 153-158页

作者：刘杰高乐中国行政管理学会北京100017

主要考察了中国近代第一个政治学共同体中华政治学会的成立过程和早期活动。追溯了中华政治学会的成立背景:政治学留学生纷纷归国、政治学研究初步展开、政治学教育开始起步,论述了中华政治学会的主要活动:学术研讨、举办刊物、开办图... 详细信息

主要考察了中国近代第一个政治学共同体中华政治学会的成立过程和早期活动。追溯了中华政治学会的成立背景:政治学留学生纷纷归国、政治学研究初步展开、政治学教育开始起步,论述了中华政治学会的主要活动:学术研讨、举办刊物、开办图书馆等。由此可以看出:中华政治学会作为中国近代第一个政治学学术团体,在学术史上有重要价值;与此同时,其作用的发挥也存在诸多局限,这从反面说明了稳定发展的社会环境对学术共同体和学科发展的重要性。

关键词：近代政治学学科史政治学共同体中华政治学会

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Analyses and identification of the chemical constituents of the Uighur formulation Baixuan Xiatare using three-stage infrared spectroscopy

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Journal of Traditional Chinese Medicine 2020年第5期40卷 875-882页

作者： Litipijiang Aibibula Pang Xiaobo Zhu Yun Huang Jian Wang Hangyu gao le Liang Xu Chen Long Zhang Ke Wang Jinhui Dermatological Department Hospital of Xinjiang Traditional Uyghur MedicineUrumqi 776China School of Traditional Chinese Materia Medica Shenyang Pharmaceutical UniversityShenyang 110016China Key Laboratory of Ministry of Education for TCM Viscera-State Theory and Applications Liaoning University of Traditional Chinese MedicineShenyang 110847China School of Pharmacy Shihezi University(Key Laboratory of Xinjiang Phytomedicine Resource and UtilizationMinistry of Education)Shihezi 832001China Department of Medicinal Chemistry and Natural Medicine Chemistry(State-Province Key Laboratories of Biomedicine-Pharmaceutics of China) Harbin Medical UniversityHarbin 150081China Department of Dermatology Dongzhimen Hospitalaffiliated to Beijing University of Chinese MedicineBeijing 100700China

OBJECTIVE:To identify,rapidly and accurately,the chemical composition of the traditional Uighur formulation Baixuan Xiatare(BXXTR-FU).METHODS:We investigated if application of three-stage infrared(IR)spectroscopy enabled identification of the main chemical constituents(and their origins)in ***:The characteristic peaks of herbal material(s)and BXXTR-FU were *** Fourier transform-IR(FT-IR)spectroscopy of BXXTR-FU,peaks at1616 and 1605 cm-1 of BXXTR-FU were considered to denote anthraquinones and their derivatives;1066 cm-1 was regarded as the characteristic absorption peak of resin *** second-derivative IR(SD-IR)spectroscopy,the main carbonyl types of BXXTR-FU in the range 1743-1636 cm-1 were assigned:1651 cm-1 belonged to the carbonyl stretching vibrations of flavonoids and chromones;1717 cm-1 belonged to tannins;1699 cm-1 belonged to carboxylic acids;1636 cm-1 belonged to anthraquinones and their ***-IR spectroscopy further confirmed that the characteristicabsorption peaks at 1636,1618 and 1603 cm-1 could be used as markers that BXXTR-FU contained anthraquinones and their ***2 D-IR correlation spectra of chemical groups further confirmed the results of FT-IR and SD-IR ***:Our study strongly supported the necessity and importance of three-stage IR spectroscopy owing to its rapid and accurate identification of herbal formulations.

关键词： Spectrum analysis Absorption peaks Uighur formulation

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数字治理革命与新型生产关系:基于技术、组织、制度三重视角的分析

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改革 2024年第11期 28-39页

作者：贾开高乐上海交通大学国际与公共事务学院中国行政管理学会

发展新质生产力需要形成与之相适应的新型生产关系,但新型生产关系的重要性及其内涵尚未得到充分讨论。以索洛提出的生产率“悖论”为分析起点,指出技术革命不会自动转变为以全要素生产率普遍提升为标志的产业革命,二者缺口需要通过在... 详细信息

发展新质生产力需要形成与之相适应的新型生产关系,但新型生产关系的重要性及其内涵尚未得到充分讨论。以索洛提出的生产率“悖论”为分析起点,指出技术革命不会自动转变为以全要素生产率普遍提升为标志的产业革命,二者缺口需要通过在各个层面改变利益相关方合作关系的治理革命来弥补。治理革命主要包含技术路线、组织结构、制度规则三个维度的多重可能性探索,这在当前又主要体现为数字技术多重路线的演化选择、“数字后福特”作为组织变革的迭代进化、包容性和开放性数字制度的探索变迁。它们共同构成数字治理革命的基本内涵,也是数字革命时代新型生产关系的重要内涵。

关键词：新型生产关系新质生产力治理革命数字治理

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基于字节码关键路径的智能合约漏洞检测

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哈尔滨工程大学学报 2022年第2期43卷 255-261页

作者：印桂生高乐庄园李俊哈尔滨工程大学计算机科学与技术学院黑龙江哈尔滨150001 国家工业信息安全发展研究中心北京100040

目前智能合约漏洞检测技术手段单一,多数方法只针对合约的源代码,鲜有面向智能合约其他类型的安全检测。本文在仅给定智能合约二进制代码的情况下,针对最高频的可重入漏洞、委托调用漏洞和时间戳依赖漏洞,设计并实现了一种基于关键路径... 详细信息

目前智能合约漏洞检测技术手段单一,多数方法只针对合约的源代码,鲜有面向智能合约其他类型的安全检测。本文在仅给定智能合约二进制代码的情况下,针对最高频的可重入漏洞、委托调用漏洞和时间戳依赖漏洞,设计并实现了一种基于关键路径的智能合约漏洞检测方法。基于合约字节码构建智能合约执行控制流图;根据智能合约漏洞特点定义关键指令及规则,生成关键路径;最后采用规则匹配实现漏洞检测。通过对以太坊网络上8000个智能合约进行实验测试,结果表明:该方法可有效检测上述3类漏洞,准确度高达93.75%。

关键词：区块链智能合约安全分析漏洞检测二进制代码字节码关键指令关键路径

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海洋生态经济协调发展研究综述

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海洋环境科学 2012年第2期31卷 289-294页

作者：高强高乐华中国海洋大学管理学院山东青岛266071 中国海洋大学水产学院山东青岛266003

随着海洋资源开发的规模化推进,海洋经济快速增长,海洋自然生态系统急剧衰退,海洋生态经济矛盾日益尖锐,海洋生态经济协调发展研究已成为近年来海洋生态学、海洋经济学以及生态经济学研究领域的热点和难点问题。本文从海洋生态经济的价... 详细信息

随着海洋资源开发的规模化推进,海洋经济快速增长,海洋自然生态系统急剧衰退,海洋生态经济矛盾日益尖锐,海洋生态经济协调发展研究已成为近年来海洋生态学、海洋经济学以及生态经济学研究领域的热点和难点问题。本文从海洋生态经济的价值贡献、问题危机、安全评估、关系模型、综合管理等5个方面回顾分析了国内外有关海洋生态经济协调发展研究的进展情况,发现与陆域生态经济协调发展研究相比,海洋生态经济协调发展研究无论在理论构建还是方法创新上都存在滞后性。

关键词：海洋生态海洋经济危机协调综述

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Study on High-frequency Callus Induction From Aseptic Plantlets of Anthuium andraeanum

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Agricultural Biotechnology 2019年第4期8卷 39-41,47页

作者： Xiuxiu LI Siyu ZHOU Siyu ZHU le gao Jianzhong TAN Department of Landscape Architecture College of Architecture Soochow University

[Objectives]This study was conducted to improve the efficiency of callus induction and redifferentiation,and construct high-frequency plant regeneration techniques of tissue culture in Anthuium andraeanum.[Methods]The effects of different genotypes,explant types and hormonal conditions on callus induction and re-differentiation of *** were studied by using the aseptic *** test-tube plantlets as test materials.[Results]Among the four kinds of aseptic *** plantlets,the callus induction using stem segments with leaves was the best,followed by stem segments and leaves,and the petioles were the worst;among the six *** varieties tested,the callus production rates of four varieties reached 100%;and the callus differentiation rate reached 93.3%-100%through the organogenesis pathway,and the suitable differentiation medium was 1/2MS+ZT 0.5 mg/L+2,4-D 0.1 mg/L.[Conclusions]The research results provide a new experimental basis for optimizing the technical system of *** rapid propagation.

关键词： Anthuium andraeanum Explant type Callus induction Cytokinin Adventitious bud

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1-DE/MS Analysis of Proteins Related to the Spathe Color Variation in an Anthurium andraeanum Mutant

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Agricultural Biotechnology 2020年第3期9卷 4-7页

作者： Lan LUO le gao Yanhua MIAO Fangying XU Jianzhong TAN Department of Landscape Architecture College of ArchitectureSoochow UniversitySuzhou 215123China

[Objectives] This study was conducted to explore the color variation mechanism of Anthurium andraeanum spathe at the protein level. [Methods]The differential proteins of wild type and its white mutant were separated and identified by using one-dimensional gel electrophoresis and mass spectrometry( 1-DE/MS). [Results] Compared with leaves and spadices,the 1-DE patterns of two kinds of spathe proteins were significantly different,and two different bands were detected in wild type spathes and mutant spathes respectively. The four significantly differential bands were selected and analyzed by mass spectrometry,and 138,111,70 and 427 proteins were identified respectively. The results of GO functional annotation analysis showed that the molecular functions of the proteins were mainly catalytic activity and binding,and the main biological processes involved were cellular process and metabolic process. Many proteins involved in the synthesis of anthocyanins and flavonoids,sugar metabolism and some resistance proteins were screened,indicating that the spathe color difference of A. andraeanum‘Pink champion'is not only related to anthocyanin anabolism,but also regulated by various metabolic pathways. [Conclusions]The study provides a new experimental basis for elucidating the molecular mechanism of the regulation of A. andraeanum flower color.

关键词： Anthurium andraeanum Flower color mutant Differential protein Gel electrophoresis Mass spectrometry

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