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一种移动agent结构化迁移机制的设计和实现 被引量:50
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作者 陶先平 softlab.nju.edu.cn +3 位作者 吕建 张冠群 李新 董桓 《软件学报》 EI CSCD 北大核心 2000年第7期918-923,共6页
移动 agent计算模式将成为未来网络计算的主流模式 .移动 agent的迁移机制是其技术核心之一 .该文分析了现有移动 agent系统中采用的几种代表性迁移技术 ,提出了一种新的结构化迁移机制 .该机制的主要特点如下 :( 1) agent的旅行计划和... 移动 agent计算模式将成为未来网络计算的主流模式 .移动 agent的迁移机制是其技术核心之一 .该文分析了现有移动 agent系统中采用的几种代表性迁移技术 ,提出了一种新的结构化迁移机制 .该机制的主要特点如下 :( 1) agent的旅行计划和功能体完全分离 ;( 2 )旅行计划本身也具有严格定义的结构 ;( 3)提供了 3种灵活有力的迁移模式 .因此 ,它能有效地控制移动 agent的复杂度 ,有利于 agent的复用 .在该机制的基础上 ,设计并实现了移动 agent系统 Mogent1. 展开更多
关键词 移动AGENT 迁移 结构化 信息处理 人工智能
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基于改进型蚁群算法求解旅行Agent问题 被引量:15
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作者 蒋建国 骆正虎 +2 位作者 张浩 韩晓征 陈晓萍 《模式识别与人工智能》 EI CSCD 北大核心 2003年第1期6-11,共6页
本文在蚁群系统的基础上,提出一种改进型蚁群算法。蚂蚁之间通过外激素进行间接交流从而达到合作的目的,在利用已有信息与探索新解并重的策略指导下给出所求解问题的最优解,并且由于遗传算子的引入及全局更新规则的修正,不再易于陷入局... 本文在蚁群系统的基础上,提出一种改进型蚁群算法。蚂蚁之间通过外激素进行间接交流从而达到合作的目的,在利用已有信息与探索新解并重的策略指导下给出所求解问题的最优解,并且由于遗传算子的引入及全局更新规则的修正,不再易于陷入局部极小。本文采用改进型蚁群算法求解复杂的组合优化问题一旅行Agent问题,取得了满意的效果。实验结果表明,改进型蚁群算法具有鲁棒性强、自适应、并行化、正反馈的优点。 展开更多
关键词 改进型蚁群算法 旅行AGENT问题 组合优化问题 路由计划 人工智能
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移动代理技术及其在电子商务中的应用研究 被引量:2
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作者 王汝传 郑晓燕 《南京邮电学院学报》 2001年第2期80-82,86,共4页
阐述了一个Internet购物助手的设计与实现。购物者提交具体要求之后 ,该助手会派出MA(mo bileagent)前往有关站点 (列在行程表中 )进行搜索。MA携带购物者提交的信息及行程表 ,到达一目的主机之后就开始一系列的搜索。一主机搜索完毕 ,... 阐述了一个Internet购物助手的设计与实现。购物者提交具体要求之后 ,该助手会派出MA(mo bileagent)前往有关站点 (列在行程表中 )进行搜索。MA携带购物者提交的信息及行程表 ,到达一目的主机之后就开始一系列的搜索。一主机搜索完毕 ,再前往下一主机 ,直至行程表中列出的所有主机均访问完毕。工作完成之后 ,MA会携搜寻结果返回宿主机。最后由购物助手对结果作一综合 ,将其反馈给购物者 ,供其决策参考。 展开更多
关键词 移动代理 电子商务 因特网
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Diagnostic Itinerary of Patients Monitored for Thyroid Disease at the Conakry University Hospital in 2022
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作者 Elhadj Zainoul Bah Alpha Mamadou Diallo +10 位作者 Kadidiatou Bah Mamadou Dian Mamoudou Diallo Abdoul Mazid Diallo Mamadou Alpha Diallo Mamadou Chérif Diallo Mamadou Mansour Diallo Mody Abdoulaye Barry Oumar Telly Sow Kadija Dieng Amadou Kaké Amadou Bah 《Open Journal of Endocrine and Metabolic Diseases》 2024年第9期165-177,共13页
Introduction: Thyroid pathologies are either the cause or a consequence of certain pathologies with which they interact, manifesting themselves through a polymorphic and non-specific clinic. They affect different devi... Introduction: Thyroid pathologies are either the cause or a consequence of certain pathologies with which they interact, manifesting themselves through a polymorphic and non-specific clinic. They affect different devices and/or systems, making the clinical picture more complex or even a delay in diagnosis and treatment. These latter aspects, being then multidimensional, could be preceded by a very specific patient itinerary for the diagnosis and management of cases of thyroid gland pathologies. Methods: This was a descriptive cross-sectional study whose data were collected from May 1 to October 30, 2022. It focused on patients followed for thyroid diseases at the Conakry University Hospital. The objectives were to describe the patient’s journey before their diagnosis of thyroid disease. Results: The subjects were 86.1% women with a mean age of 43.7 ± 28 years. Of the total, 67.85% had a comorbidity including diabetes and/or hypertension/heart disease. They are followed for goiters/simple nodules (22.78%), hypothyroidism (16.46%) and hyperthyroidism (60.76%). They spend at least 9 months before resorting to a healthcare facility. The general medicine services of the Conakry University Hospital are the first recourse (51.9%) of these subjects. They consult 2 to 4 times before the diagnosis is suggested. Hyperthyroidism, hypothyroidism and goiters/simple nodules spend 5.4;6.4 and 13.7 months respectively before the diagnosis is made. 31.6% were hospitalized and treated mainly for malaria (19.0%), hypertension (13.1%), salmonellosis (13.1%) and diabetes (8.3%). A third of patients used traditional therapy before being in contact with the endocrinology department by referral (73.4%). Conclusion: This study made it possible to show a pre-diagnostic pathway which has a particular character concerning patients followed for thyroid pathologies in Guinea. 展开更多
关键词 itinerary DIAGNOSIS THYROID Conakry
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奥利维蒂展厅的猜想(上篇):卡洛·斯卡帕的设计起点和过程 被引量:4
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作者 张婷 肖闻达 《建筑师》 2014年第4期90-100,共11页
本文首先回顾了奥利维蒂展厅的项目背景。以斯卡帕在马德里演讲的一段叙述为线索,根据工程师马斯基耶托(Maschietto)的档案还原了场地初始信息。根据图纸、文献、现场观察对斯卡帕整个空间策略的设计起点进行猜想和论证。并在起点和最... 本文首先回顾了奥利维蒂展厅的项目背景。以斯卡帕在马德里演讲的一段叙述为线索,根据工程师马斯基耶托(Maschietto)的档案还原了场地初始信息。根据图纸、文献、现场观察对斯卡帕整个空间策略的设计起点进行猜想和论证。并在起点和最终结果之间建立对照,通过几个可能的推进点,考察方案的深化过程。最后对设计方法做出小结。 展开更多
关键词 奥利维蒂展厅 卡洛·斯卡帕 场地 流线 空间序列 设计方法
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基于Aglets开发平台的智能采集问题研究 被引量:2
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作者 赵琦 薛兵 邹燕 《计算机测量与控制》 CSCD 2006年第2期274-276,共3页
文章论述了在分布式数据采集中使用移动代理技术的必要性,重点研究了网络信息智能采集的有关问题,并基于Aglets开发平台设计实现了网络学习者学习信息采集系统。该系统结构设计合理、功能完善、使用方便,能够高效准确地采集网络学习者... 文章论述了在分布式数据采集中使用移动代理技术的必要性,重点研究了网络信息智能采集的有关问题,并基于Aglets开发平台设计实现了网络学习者学习信息采集系统。该系统结构设计合理、功能完善、使用方便,能够高效准确地采集网络学习者的学习信息,很好地完成与分布式数据库的交互。 展开更多
关键词 Aglets网络学习系统 巡回路由 信息采集
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Mobile Agent-Concordia的体系结构及关键技术 被引量:2
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作者 胡启平 刘萍 《武汉理工大学学报(信息与管理工程版)》 CAS 2001年第4期5-8,共4页
探讨了三菱的Horizon系统实验室的Concordia系统结构 ,分析了Concordia的MobileAgent迁移的实现机制、迁移路线和管理方式 ,以及Agent迁移和存储时的安全保护 ,采用消息排队等技术 ,提供了Agent可靠性的保障、协同工作的支持等关键技术。
关键词 分布计算 移动智能体 迁移路线 MobileAgent-Concordia 体系结构 迁移机制 协同工作
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Abnormal Flight Passenger Recovery Algorithm Based on Itinerary Acceptance
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作者 Jiamin Sun Haiming Li 《Journal of Computer and Communications》 2023年第11期167-182,共16页
Under the background of the rapid development of the air transport industry, the abnormal phenomenon of flights has become increasingly serious due to various factors such as the gradual reduction of resources, advers... Under the background of the rapid development of the air transport industry, the abnormal phenomenon of flights has become increasingly serious due to various factors such as the gradual reduction of resources, adverse climatic conditions, problems in air traffic control and mechanical failures. In order to reduce losses, it has become a major problem for airlines to use optimization algorithm to study the recovery of abnormal flights. By upgrading the passenger recovery engine, the purpose of this paper is to provide the optimal recovery scheme for passengers, so as to reduce the risk of transferring overseas flights, and thus reduce the economic loss of airlines. In this paper, the optimization model and algorithm based on network flow, combined with actual business requirements, comprehensively consider multiple optimization objectives to quickly generate passenger recovery solutions, and at the same time achieve the optimal income of airlines and the acceptance rate of passenger recovery, so as to balance the two. The practicability and effectiveness of the proposed model and algorithm are proved by some concrete examples. 展开更多
关键词 itinerary Similarity Abnormal Flights Passenger Recovery Heuristic Algorithm Linear Programming
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A Forward Integrity and Itinerary Secrecy Protocol for Mobile Agents 被引量:1
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作者 GUAN Huanmei MENG Xuejun ZHANG Huanguo 《Wuhan University Journal of Natural Sciences》 CAS 2006年第6期1727-1730,共4页
The security problem of mobile agents is widely being discussed. The problem which protects mobile agents from malicious hosts is difficult to solve, because a host has access to the complete internal state of an agen... The security problem of mobile agents is widely being discussed. The problem which protects mobile agents from malicious hosts is difficult to solve, because a host has access to the complete internal state of an agent. Forward integrity in mobile agents guarantees that offers contained in a mobile agent from previously visited host can not be modified by a malicious host. Itinerary secrecy can prevent mobile agent from being passively attack. This paper proposes a new forward integrity and itinerary secrecy protocol for mobile agent. The protocol can also resist collusion truncation attack. 展开更多
关键词 mobile agent security forward integrity itinerary secrecy truncation attack
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Socio-Cultural Representations and Therapeutic Itineraries of Parents of Autistic Children Followed in the INSP’s Children’s Mental Health Services
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作者 Koffi Paulin Konan Brahim Samuel Traore +3 位作者 Ettié Sylvie Kouassi Yao Etienne Kouadio Kouadio Régis Aymar Yao Yessonguilana Jean-Marie Yeo-Tenena 《Open Journal of Psychiatry》 2023年第1期1-9,共9页
Pervasive developmental disorders (PDD) remain little known to populations in developing countries. In black Africa their social representations remain strongly influenced by local belief systems. The general objectiv... Pervasive developmental disorders (PDD) remain little known to populations in developing countries. In black Africa their social representations remain strongly influenced by local belief systems. The general objective of this study was to understand the perceptions and representations of Ivorian parents vis-à-vis PDD. This was a mixed (qualitative and quantitative) prospective cross-sectional study with a descriptive aim that involved a sample of 49 parents. The sampling was of the qualitative type by multiple cases with reasoned choice by saturation. Our results showed that male parents were mostly aged between 40 - 49 years (48.98%) with a higher level of education (67.34%) while mothers were mostly aged between 30 - 39 (61.22%) and a higher level (30.61%). Autistic children were negatively perceived by their parents: either as a source of psychological suffering (82.85%), or as mysterious children who sacrificed their parents (44.66%), or as “bobo” children (mute children in common Ivorian language) (16.66%) or like rude children (13.34%). The supposed origin of the disorder according to the parents was mystical-religious (60.94%);natural (25%);hereditary (6.25%). In 6.25% of cases, PDD were assumed to be of unknown or iatrogenic origin attributable to vaccination (1.56%). 75.51% of parents said that in addition to conventional medical therapies, they also used traditional therapies. The use of this therapeutic alternative would be linked to the perceptions and beliefs that feed the socio-cultural representations of our respondents. 展开更多
关键词 Pervasive Developmental Disorders Socio-Cultural Representation PARENTS Therapeutic itinerary
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广西民俗文化旅游线路的社会网络分析 被引量:3
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作者 刘冰 《广西民族大学学报(哲学社会科学版)》 CSSCI 北大核心 2015年第5期153-157,共5页
借鉴社会网络理论及方法,通过对广西民俗文化旅游线路的分析,探索旅游目的地网络结构特征。结果表明,网络中各旅游目的地的中心度和结构洞存在显著共性及差异;应有意识地调整和构建合作战略;对竞合关系下民族地区旅游合作及一体化等问... 借鉴社会网络理论及方法,通过对广西民俗文化旅游线路的分析,探索旅游目的地网络结构特征。结果表明,网络中各旅游目的地的中心度和结构洞存在显著共性及差异;应有意识地调整和构建合作战略;对竞合关系下民族地区旅游合作及一体化等问题有重要意义。 展开更多
关键词 民族旅游 社会网络 旅游目的地合作 旅游线路
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马可波罗上都之旅考述 被引量:3
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作者 石坚军 《中国历史地理论丛》 CSSCI 北大核心 2012年第1期141-151,共11页
国内外学者对马可波罗来华旅程众说纷纭,莫衷一是。本文在前人研究基础之上,对《马可波罗寰宇记》所载首个隶属忽必烈汗之地——可失合儿至元上都期间若干地名、史实、马可波罗旅行路线进行了详细考述,总结出《马可波罗寰宇记》存在一... 国内外学者对马可波罗来华旅程众说纷纭,莫衷一是。本文在前人研究基础之上,对《马可波罗寰宇记》所载首个隶属忽必烈汗之地——可失合儿至元上都期间若干地名、史实、马可波罗旅行路线进行了详细考述,总结出《马可波罗寰宇记》存在一种暂时偏离马可波罗旅程正途,而插述与之邻近或甚远地区的编排体例。 展开更多
关键词 马可波罗 《寰宇记》 上都 路线
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BASIC IDEA OF TOURIST'S ITINERARIES IN THE ARID AREA OF CHINA——Discussion of the Methodology for Designing the Itineraries in the Arid Area
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作者 Wang Jianmin The Economic Developing Institute of the Planning Committee in Ningxia Hui Autonomous Region 《干旱区资源与环境》 CSCD 1993年第Z1期504-506,共3页
The aspect discussed in the present paper should ont be identified strictly with the natu-ral and geogrophical arid areas in the whole China, but only referred to the seven provincesas Shaanxi, Gansu, Qinhai, Xinjiang... The aspect discussed in the present paper should ont be identified strictly with the natu-ral and geogrophical arid areas in the whole China, but only referred to the seven provincesas Shaanxi, Gansu, Qinhai, Xinjiang and Inner Mongolia. According to the real conditions of the development of tourism which was formedobjectively in the arid areas, it is necessary to consider comprehensively the influence by 展开更多
关键词 China ARID Area TOURISM itinerary Design
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Therapeutic Itinerary of Patients Followed for Connectivitis in the Internal Medicine Department of the CNHU-HKM of Cotonou (Benin)
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作者 Angèle Azon-Kouanou Kouessi Anthelme Agbodande +8 位作者 Eugénie Dansou Mahoutin Semassa Ghislain Missiho Yves Morel Sokadjo Armand Finagnon Wanvoegbe Janvier Kitumaini Kondoli Richard Oba Roberto Dossou Tores Kouassi Prudencio Djimon Marcel Zannou Fabien Houngbé 《Open Journal of Internal Medicine》 2021年第2期73-80,共8页
<strong>Introduction:</strong> In black Africa, connectivites have been for a long time a source of diagnostic erraticity because of their clinical polymorphism. This study aims to determine the therapeuti... <strong>Introduction:</strong> In black Africa, connectivites have been for a long time a source of diagnostic erraticity because of their clinical polymorphism. This study aims to determine the therapeutic itinerary of patients followed for connectivitis in the Internal Medicine Department of the CNHU HKM of Cotonou. <strong>Methodology:</strong> This is a cross-sectional study that included patients followed for connectivitis in the HKM-Cotonou Internal Medicine Department from January 2010 to October 2018. <strong>Results:</strong> Out of 3600 patients hospitalized in the study period, 21 had connectivitis, <i>i.e.</i> a hospital frequency of 0.58%. Of the 21 patients collected, 18 met the inclusion criteria. The mean age was 40 (±11) years old and the youngest was of 21 and the oldest 58. The sex ratio was 17.9. The “Fon” ethnic group was the most represented (33.3%) and 15 (83.3%) subjects were Christians. Systemic lupus erythematosus was the most frequent connectivitis (55.6%). The average time of consultation was 38 months. Witchcraft was the most incriminating cause (78%). Ten (55.5%) patients had resorted to self-medication as their first choice of treatment, 5 (27.8%) to traditional medicine treatment and 3 (16.7%) to prayer for healing. The reasons for the first choice of treatment were satisfaction (44.4%), financial problems (27.8%), trivialization of the disease (16.7%), and advice from family and friends (11.1%). The consultation at the CNHU followed a referral from a first contact health structure (61%) or an initiative of the patient (27.8%). <strong>Conclusion:</strong> Connectivitis is a source of diagnostic error in our context. Awareness must be raised among patients for an early consultation at the first symptoms. 展开更多
关键词 Connectivitis Therapeutic itinerary CNHU-HKM Cotonou
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MA计划方式迁移机制的对比分析
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作者 赵苏玮 王存进 刘斌 《微计算机信息》 北大核心 2007年第36期105-107,共3页
迁移技术是移动Agent(即Mobile Agent,简称MA)的关键技术之一。本文在概括了MA迁移过程并将MA的迁移与其它迁移技术做出比较的基础上,着重对比分析了MA计划方式的几种迁移机制,描述了各自的工作原理,特点,和可以进一步改进的地方。
关键词 移动AGENT 迁移 旅行计划 迁移计划图
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Therapeutic Itinerary of Patients Living with Viral Hepatitis B and C in Guinea
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作者 Diallo Kadiatou Barry Fatoumata Diaraye +8 位作者 Diallo Thierno Saidou Diallo Djenabou Sow Ousmane Diallo Mamadou Sarifou Sylla Mariétou Salifou Sylla Djibril Leno Niouma Nestor Diallo Alpha Amadou Sank Tounkara Thierno Mamadou 《Open Journal of Gastroenterology》 CAS 2022年第10期299-306,共8页
Introduction: The therapeutic pathway affects the patient who changes care facilities. This change is linked to factors such as financial means, geographical accessibility of care facilities, quality of care and the s... Introduction: The therapeutic pathway affects the patient who changes care facilities. This change is linked to factors such as financial means, geographical accessibility of care facilities, quality of care and the socio-cultural perception of the patient. In countries with limited resources such as Guinea, the therapeutic itinerary remains multiple and hampered by obstacles. The objective of this study was to describe the therapeutic itinerary of patients living with hepatitis B and C at the Donka National Hospital. Material and methods: This was a retrospective, descriptive study lasting 43 months (24 January 2017 - 27 August 2020);it focused on patients living with hepatitis B or C or viral cirrhosis. We collected sociodemographic, clinical and treatment history variables. The data were analysed with SPSS software version 21.0. Results: Out of 5400 patients, the proportion of viral hepatitis B or C represented 393 patients (7.3%). The mean age of our patients was 35 ± 10 years, with extremes of 16 - 77 years. The sex ratio was 2.5. Three hundred and forty-two patients (87%) had recourse to modern medicine, mostly in private facilities (50.6%). One hundred and twenty-five patients (31.8%) had received previous treatment, half of whom (57.6%) had received inappropriate treatment. The delay in treatment was long in 45% of cases. The main reasons for delaying treatment were feeling unwell in 33.3%;not knowing to consult a specialist in 29.9% and feeling that they were being treated with useful drugs in 24.3%. Conclusion: The lack of training of general practitioners on the management of viral hepatitis and the scarcity of awareness campaigns on viral hepatitis contributed to the inadequacy of the management. 展开更多
关键词 Therapeutic itinerary Hepatitis B Hepatitis C GUINEA
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变动社会中的晚清佛门实录——基于Walks in the city of Canton:with an itinerary一书的考察
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作者 杨宪钊 《地方文化研究》 2018年第2期92-98,共7页
晚清来华耶稣会士的论著是研究晚清社会宗教的重要文献资料。英国传教士约翰·亨利·格雷Walks in the City of Canton:with an Itinerary一书以观赏者的视角描述了晚清广州城的历史面貌,尤其是对广州城的佛寺有浓墨重彩的描述... 晚清来华耶稣会士的论著是研究晚清社会宗教的重要文献资料。英国传教士约翰·亨利·格雷Walks in the City of Canton:with an Itinerary一书以观赏者的视角描述了晚清广州城的历史面貌,尤其是对广州城的佛寺有浓墨重彩的描述。不仅如实记录了佛教道场的历史传承,且重点探析了变动社会中佛门的真实转向。从中可以窥探社会经济背景与宗教文化之间的动态互动关系,进而藉此加深对晚清社会的理解。 展开更多
关键词 晚清 广州 佛寺 WALKS in the CITY of Canton:with an itinerary
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徐松西域调查行踪稽考 被引量:2
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作者 李军 《中国边疆史地研究》 CSSCI 北大核心 2021年第4期184-196,216,共14页
关于清代著名地学家徐松西域调查的具体行踪,学界尚未深入考察。由此,细致勾稽徐松西域调查的行踪,对研究其生平和有关西域著述,均具有重要参考意义。目前关于徐松在西域初步可考的行踪,大致分为五个阶段,即嘉庆十七年的遣戍途中、二十... 关于清代著名地学家徐松西域调查的具体行踪,学界尚未深入考察。由此,细致勾稽徐松西域调查的行踪,对研究其生平和有关西域著述,均具有重要参考意义。目前关于徐松在西域初步可考的行踪,大致分为五个阶段,即嘉庆十七年的遣戍途中、二十至二十一年的南北壮游、二十一至二十四年的伊犁著述、二十四年的哈什校猎、二十五年的释还途中。 展开更多
关键词 徐松 西域 行踪 “西域三种”
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基于帐篷映射迭路的置乱方法 被引量:2
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作者 叶瑞松 庄乐仪 《计算机应用》 CSCD 北大核心 2009年第10期2713-2715,共3页
提出了一种基于帐篷映射迭路的音频和图像的置乱方法。帐篷映射迭路产生的编码可用于音频信号置乱。另外,将映射推广至二维便可用于图像置乱;讨论了图像置乱的置乱度、置乱周期和鲁棒性。和传统的Arnold变换的置乱比较,该方法总体上具... 提出了一种基于帐篷映射迭路的音频和图像的置乱方法。帐篷映射迭路产生的编码可用于音频信号置乱。另外,将映射推广至二维便可用于图像置乱;讨论了图像置乱的置乱度、置乱周期和鲁棒性。和传统的Arnold变换的置乱比较,该方法总体上具有更大的置乱周期和更好的置乱度。 展开更多
关键词 迭路 帐篷映射 置乱 音频 图像
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基于Baker映射迭路的图像加密算法 被引量:2
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作者 叶瑞松 庄乐仪 《汕头大学学报(自然科学版)》 2010年第1期54-60,共7页
提出一种基于Baker映射迭路的数字图像空间域的编码新方法,利用Baker映射迭路所得的有限符号串对图像像素位置编码,从而对数字图像进行置乱,并计算置乱周期和置乱度.在此基础上,利用Logistic映射的混沌性质对置乱图像作了进一步的加密.
关键词 BAKER映射 迭路 置乱 加密
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