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Study on the Coordination Mechanism Between Higher Vocational Students’Career Development Planning and School Management
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作者 Jian Li 《Journal of Contemporary Educational Research》 2024年第7期204-209,共6页
The coordination mechanism between the career development planning of vocational students and the management of vocational colleges is an important means to improve the quality of education and students’vocational co... The coordination mechanism between the career development planning of vocational students and the management of vocational colleges is an important means to improve the quality of education and students’vocational competitiveness.The application of synergy theory in the field of education emphasizes the interaction and coordination of various elements in the system and pursues the optimization of overall efficiency.Based on the theory of coordination and its relevance to the management of higher vocational colleges,this paper analyzes the current development status and problems of the coordination mechanism and puts forward the strategy of building an efficient coordination mechanism designed to enhance the students’employment competitiveness,promote the all-round development,and provide theoretical and practical support for the reform and development of higher vocational education. 展开更多
关键词 Vocational college management Career development planning Coordination mechanism synergy theory safeguard measures
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Adaptive Integrated Coastal Zone Planning:History,Challenges,Advances,and Perspectives
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作者 WANG Xinyi SU Fenzhen +4 位作者 WANG Xuege PAN Tingting CUI Yikun LYNE Vincent YAN Fengqin 《Chinese Geographical Science》 SCIE CSCD 2024年第4期599-617,共19页
Coastal zones are dynamic,rich environments,now densely populated,and increasingly challenged by human and climatechange pressures.Effective long-term integrated coastal zone planning is needed to ensure sustainable e... Coastal zones are dynamic,rich environments,now densely populated,and increasingly challenged by human and climatechange pressures.Effective long-term integrated coastal zone planning is needed to ensure sustainable environmental protection and economic development.In this study,we reviewed the history of coastal zone planning since its birth in the 1950s based on the literature retrieved from the Web of Science(Core Collection)from 2000–2023,then summarized the tools and spatial allocation methods commonly used in the planning process,and finally proposed potential solutions to the challenges faced.The results show that after decades of development,coastal zone planning has changed from a decentralized activity to a targeted and integrated one,with an increasing emphasis on the ecosystem approach and the use of multiple planning tools.Spatial analysis techniques and environmental modelling software have become increasingly popular.Linear programming and overlay analysis are common approaches when performing spatial optimization,but land-sea interactions and planning in the marine parts still lack in-depth analysis and practical experience.We are also aware that the challenges posed by the integration of administrative hierarchies,scoping and conservation objectives,stakeholder participation,consideration of social dimensions,and climate change are pervasive throughout the planning process.There is an urgent need to develop more flexible and accurate spatial modelling tools,as well as more efficient participatory methods,and to focus on the holistic nature of the land-sea system to create more resilient and sustainable coastal zones. 展开更多
关键词 Integrated Coastal Zone management(ICZM) coastal zone planning spatial optimization ecosystem-based management
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Participatory Technique Supporting Environmental Management: A Systematic and Bibliometric Review
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作者 Barbara Rentes Barbosa Fabiana Da Silva Soares +2 位作者 Luiz Carlos De Faria Kaline De Mello Roberta Averna Valente 《Journal of Environmental Protection》 2024年第7期781-795,共15页
The increasing need to manage natural resources sustainably, driven by population growth, requires the simultaneous use of Participatory Techniques (PT) and landscape planning for structured decision-making. We conduc... The increasing need to manage natural resources sustainably, driven by population growth, requires the simultaneous use of Participatory Techniques (PT) and landscape planning for structured decision-making. We conducted a bibliometric and systematic review to provide an overview of PT usage, identifying evolution in scientific production. We considered the number of publications and citations, prominent journals, and highly cited articles on scientific papers published in the Web of Science database between 1993 and 2023. A total of 415 articles related to PT were identified. After content evaluation, 19 critical articles were selected that underpin the growing combined use of models and indices with PT, enhancing the robustness and credibility of decision-making processes. 展开更多
关键词 PARtICIPAtION Landscape planning Decision-Making Process stAKEHOLDERs sustainable management
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Revenue management method and critical techniques of railway passenger transport
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作者 Xinghua Shan Xiaoyan Lv +2 位作者 Jinfei Wu Shuo Zhao Junfeng Zhang 《Railway Sciences》 2024年第5期636-649,共14页
Purpose–Revenue management(RM)is a significant technique to improve revenue with limited resources.With the macro environment of dramatically increasing transit capacity and rapid railway transport development in Chi... Purpose–Revenue management(RM)is a significant technique to improve revenue with limited resources.With the macro environment of dramatically increasing transit capacity and rapid railway transport development in China,it is necessary to involve the theory of RM into the operation and decision of railway passenger transport.Design/methodology/approach–This paper proposes the theory and framework of generalized RM of railway passenger transport(RMRPT),and the thoughts and methods of the main techniques in RMRPT,involving demand forecasting,line planning,inventory control,pricing strategies and information systems,are all studied and elaborated.The involved methods and techniques provide a sequential process to help with the decision-making for each stage of RMRPT.The corresponding techniques are integrated into the information system to support practical businesses in railway passenger transport.Findings–The combination of the whole techniques devotes to railway benefit improvement and transit resource utilization and has been applied into the practical operation and organization of railway passenger transport.Originality/value–The development of RMRPT would provide theoretical and technical support for the improvement of service quality as well as railway benefits and efficiency. 展开更多
关键词 Revenue management Railway passenger transport Demand forecasting Line planning Inventory control Pricing strategy
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Design and analysis of an advanced thermal management system for the solar close observations and proximity experiments spacecraft
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作者 Liu Liu Kangli Bao +4 位作者 Jianchao Feng Xiaofei Zhu Haoyu Wang Xiaofeng Zhang Jun Lin 《Astronomical Techniques and Instruments》 CSCD 2024年第1期52-61,共10页
In this paper,the mission and the thermal environment of the Solar Close Observations and Proximity Experiments(SCOPE)spacecraft are analyzed,and an advanced thermal management system(ATMS)is designed for it.The relat... In this paper,the mission and the thermal environment of the Solar Close Observations and Proximity Experiments(SCOPE)spacecraft are analyzed,and an advanced thermal management system(ATMS)is designed for it.The relationship and functions of the integrated database,the intelligent thermal control system and the efficient liquid cooling system in the ATMS are elaborated upon.For the complex thermal field regulation system and extreme space thermal environment,a modular simulation and thermal field planning method are proposed,and the feasibility of the planning algorithm is verified by numerical simulation.A solar array liquid cooling system is developed,and the system simulation results indicate that the temperatures of the solar arrays meet the requirements as the spacecraft flies by perihelion and aphelion.The advanced thermal management study supports the development of the SCOPE program and provides a reference for the thermal management in other deep-space exploration programs. 展开更多
关键词 solar Close Observations and Proximity Experiments Adaptive thermal control method thermal field planning method Pumped liquid cooling system Advanced thermal management system
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The role of forest culture in green construction and management of forest parks:merging knowledge-attitude-practice and theory of planned behavior 被引量:1
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作者 Yao Xu Zhiguang Zhang 《Journal of Forestry Research》 SCIE CAS CSCD 2023年第3期841-852,共12页
As a cultural concept refl ecting the relationship between humans and forests,forest culture plays an active role in sustainable forest management.Forest parks provide a wide range of ecosystem services essential for ... As a cultural concept refl ecting the relationship between humans and forests,forest culture plays an active role in sustainable forest management.Forest parks provide a wide range of ecosystem services essential for the sustainable development of society,and the relationships between forest culture,green construction and management of forest parks have practical signifi cance.This study aimed to understand the interaction and process of forest culture infl uencing green construction and management in forest parks with the models Knowledge-Attitude-Practice(KAP)and Theory of Planned Behavior(TPB)by proposing a theoretical model.Four hypotheses were tested using data collected from 193 forest park employees in Heilongjiang Province,China.Our results show that forest culture had a signifi cant infl uence on green construction and forest management.In addition,subjective norm and perceived behavioral control directly impacted behavior in green construction and management of the forest park,whereas attitude did not have an impact.Subjective norm had a direct eff ect on attitude.Results between constructs show that forest culture had an indirect eff ect on planning and construction,and on ecological and economic management.Consequently,it supported three of four hypotheses within the proposed model in determining the infl uence of forest culture on green construction and management. 展开更多
关键词 Forest parks Forest culture Green construction and management Knowledge-attitudepractice theory of planned behavior
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Development of an Integrated System to Enhance Spatial Data Processing & Management for Planning Authorities
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作者 Clayton Lumwaya Jackson Phiri 《Journal of Geoscience and Environment Protection》 2023年第3期17-29,共13页
In a world where there is constant data generation and processing, the need for an integrated system cannot be overemphasized. The systems that enable storage of large amounts of spatial data and must be made availabl... In a world where there is constant data generation and processing, the need for an integrated system cannot be overemphasized. The systems that enable storage of large amounts of spatial data and must be made available to multiple users in real time. Studies have shown that standalone desktop spatial systems are often rigid and inflexible to support multiple data processing or demands from multiple users. The integrated spatial management system was designed to address the above highlighted challenges by bringing enhanced possibilities of utilization of spatial data though improving accessibility, visualization, and processing spatial information. The present work employed a mixed approach of qualitative and quantitative techniques to obtain the desired result. Qualitative data collection tools were used to collect field data required to design the prototype. The research sought to establish whether the integrated systems are in use by the targeted institutions, the findings highlighted that 71.4% have no integrated spatial data systems while 28.6% have partial-integrated systems. An overview of the architecture of integrated spatial systems consists of a well distributed database linked to multiple tools and platforms to query both the spatial and non-spatial data. The WEB-GIS and Mobile GIS interfaces were developed to allow multiple users to access information through the web in real time and data collection, respectively. 展开更多
关键词 Integrated Information management system Geographical Information system planning Authority
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Development, assessment and implementation of integrated stormwater management plan: a case study in Shanghai 被引量:6
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作者 李田 张伟 黄俊杰 《Journal of Southeast University(English Edition)》 EI CAS 2014年第2期206-211,共6页
An innovative stormwater master plan based on low impact development LID is proposed.Unlike the traditional urban drainage plan this plan employs a sustainable stormwater management approach in communities utilizing L... An innovative stormwater master plan based on low impact development LID is proposed.Unlike the traditional urban drainage plan this plan employs a sustainable stormwater management approach in communities utilizing LID practices to reduce runoff and pollution load. An integrated hydraulic model which combines the traditional drainage sewer system with LID practices is adopted to assess the master plan.Through a long-term continuous simulation for 20 years the results reveal that the runoff volume will be reduced by over 80% following full implementation of this plan. Combining with the local conditions technical guidelines are established to provide assistance in implementing the stormwater master plan. Bioretention facilities for three main roads are constructed and other areas of development are being implemented sequentially under the guidance of the plan. This project provides an alternative method of stormwater management through the implementation of LID and it acts as a good example for other developing districts in China. 展开更多
关键词 stormwater master plan low impact development rainwater harvesting stORMWAtER management practices hydraulic model
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国家重大科技基础设施运行管理的改进方法与实践——以EAST全超导托卡马克核聚变实验装置为例
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作者 邓泉 尹红星 +3 位作者 刘志宏 李玥 陈洪莲 夏金瑶 《科技管理研究》 2024年第10期170-177,共8页
中国科学院合肥物质科学研究院等离子体物理研究所先后建成中国第一个圆截面超导托卡马克核聚变实验装置,以及世界上第一个非圆截面全超导托卡马克核聚变实验装置(EAST)。为持续改进EAST的运行管理,从顶层设计、组织实施和评估评价等方... 中国科学院合肥物质科学研究院等离子体物理研究所先后建成中国第一个圆截面超导托卡马克核聚变实验装置,以及世界上第一个非圆截面全超导托卡马克核聚变实验装置(EAST)。为持续改进EAST的运行管理,从顶层设计、组织实施和评估评价等方面分析EAST管理实践的有关探索与创新,具体包括:建立所领导、物理与实验运行部至一级系统的三级管理体系,能够更好围绕成果产出进行统一规划和分级管理;基于“计划—实施—检查—行动(PDCA)”管理理论,形成覆盖EAST运行周期的全过程管理机制;通过国内外评估制定设施中长期、近期计划,设置物理与实验运行部,负责主导EAST装置运行计划与目标的制定。另外,根据设施构成、结合运行需求设置一级系统,起用青年骨干担任负责人,分解任务、明确责任;同时,加强设施运行评估,部署实施系列改进举措,如优化基础研究组织模式和管理方式、创新国际合作模式等。根据EAST运行管理经验,对中国重大科技基础设施的运行和管理提出优化科研组织模式、完善管理方法、建设大科学工程团队、加强开放与合作等对策建议。 展开更多
关键词 国家重大科技基础设施 全超导托卡马克核聚变实验装置 运行规划 设施管理 管理制度 大科学工程
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Multiscale Characteristics and Connection Mechanisms of Attraction Networks:A Trajectory Data Mining Approach Leveraging Geotagged Data
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作者 JIANG Hongqiang WEI Ye +1 位作者 MEI Lin WANG Zhaobo 《Chinese Geographical Science》 SCIE CSCD 2024年第3期533-547,共15页
Urban tourism is considered a complex system,and multiscale exploration of the organizational patterns of attraction networks has become a topical issue in urban tourism,so exploring the multiscale characteristics and... Urban tourism is considered a complex system,and multiscale exploration of the organizational patterns of attraction networks has become a topical issue in urban tourism,so exploring the multiscale characteristics and connection mechanisms of attraction networks is important for understanding the linkages between attractions and even the future destination planning.This paper uses geotagging data to compare the links between attractions in Beijing,China during four different periods:the pre-Olympic period(2004–2007),the Olympic Games and subsequent‘heat period’(2008–2013),the post-Olympic period(2014–2019),and the COVID-19(Corona Virus Disease 2019)pandemic period(2020–2021).The aim is to better understand the evolution and patterns of attraction networks at different scales in Beijing and to provide insights for tourism planning in the destination.The results show that the macro,meso-,and microscales network characteristics of attraction networks have inherent logical relationships that can explain the commonalities and differences in the development process of tourism networks.The macroscale attraction network degree Matthew effect is significant in the four different periods and exhibits a morphological monocentric structure,suggesting that new entrants are more likely to be associated with attractions that already have high value.The mesoscale links attractions according to the common purpose of tourists,and the results of the community segmentation of the attraction networks in the four different periods suggest that the functional polycentric structure describes their clustering effect,and the weak links between clusters result from attractions bound by incomplete information and distance,and the functional polycentric structure with a generally more efficient network of clusters.The pattern structure at the microscale reveals the topological transformation relationship of the regional collaboration pattern,and the attraction network structure in the four different periods has a very similar importance profile structure suggesting that the attraction network has the same construction rules and evolution mechanism,which aids in understanding the attraction network pattern at both macro and micro scales.Important approaches and practical implications for planners and managers are presented. 展开更多
关键词 attraction network travel mobility polycentric structure network motif connectivity mechanism destination management organization(DMO) destination planning Beijing China
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基于SWOT分析的北京市某区属医院发展规划策略
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作者 张晓茹 詹洪春 +2 位作者 宋莉红 温彤 何静 《中国医药导报》 CAS 2024年第17期181-184,188,共5页
以北京市西城区区属三级医院北京市西城区广外医院为例,采用SWOT法分析其内部条件的优势、劣势,外部环境的机会、威胁,探讨北京市西城区广外医院在发展中面临的机遇和挑战。以医院组织架构健全,功能设置完备,高度重视人才,实行薪酬制度... 以北京市西城区区属三级医院北京市西城区广外医院为例,采用SWOT法分析其内部条件的优势、劣势,外部环境的机会、威胁,探讨北京市西城区广外医院在发展中面临的机遇和挑战。以医院组织架构健全,功能设置完备,高度重视人才,实行薪酬制度改革,人文历史底蕴好的内部优势为基础,依靠国家政策扶持,分级诊疗制度实施,强区位优势的外部机会,克服管理水平较低、重点学科优势不足、缺乏高层次人才,管理人员结构不合理、硬件环境落后的内部劣势,规避医药卫生体制改革、医疗竞争困境、公立医院绩效考核的外部威胁,提出高水平提升管理能力、高水准提升创新能力、高层次集聚优秀人才、高品质打造医院文化圈的战略发展规划策略。通过以上,为完善医院战略管理,进行医院战略分析、明确医院发展策略提供参考。 展开更多
关键词 高质量发展 发展规划 战略管理 sWOt分析法
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Beyond Defense: Proactive Approaches to Disaster Recovery and Threat Intelligence in Modern Enterprises
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作者 Meysam Tahmasebi 《Journal of Information Security》 2024年第2期106-133,共28页
As cyber threats keep changing and business environments adapt, a comprehensive approach to disaster recovery involves more than just defensive measures. This research delves deep into the strategies required to respo... As cyber threats keep changing and business environments adapt, a comprehensive approach to disaster recovery involves more than just defensive measures. This research delves deep into the strategies required to respond to threats and anticipate and mitigate them proactively. Beginning with understanding the critical need for a layered defense and the intricacies of the attacker’s journey, the research offers insights into specialized defense techniques, emphasizing the importance of timely and strategic responses during incidents. Risk management is brought to the forefront, underscoring businesses’ need to adopt mature risk assessment practices and understand the potential risk impact areas. Additionally, the value of threat intelligence is explored, shedding light on the importance of active engagement within sharing communities and the vigilant observation of adversary motivations. “Beyond Defense: Proactive Approaches to Disaster Recovery and Threat Intelligence in Modern Enterprises” is a comprehensive guide for organizations aiming to fortify their cybersecurity posture, marrying best practices in proactive and reactive measures in the ever-challenging digital realm. 展开更多
关键词 Advanced Persistent threats (APt) Attack Phases Attack surface DEFENsE-IN-DEPtH Disaster Recovery (DR) Incident Response plan (IRP) Intrusion Detection systems (IDs) Intrusion Prevention system (IPs) Key Risk Indicator (KRI) Layered Defense Lockheed Martin Kill Chain Proactive Defense Redundancy Risk management threat Intelligence
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A MySQL-Based Software System of Urban Land Planning Database of Shanghai in China
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作者 Pei Yin Jing Cheng 《Computer Modeling in Engineering & Sciences》 SCIE EI 2023年第6期2387-2405,共19页
With the development of the digital city,data and data analysis have become more and more important.The database is the foundation of data analysis.In this paper,the software system of the urban land planning database... With the development of the digital city,data and data analysis have become more and more important.The database is the foundation of data analysis.In this paper,the software system of the urban land planning database of Shanghai in China is developed based on MySQL.The conceptual model of the urban land planning database is proposed,and the entities,attributes and connections of this model are discussed.Then the E-R conceptual model is transformed into a logical structure,which is supported by the relational databasemanagement system(DBMS).Based on the conceptual and logical structures,by using Spring Boot as the back-end framework and using MySQL and Java API as the development tools,a platformwith datamanagement,information sharing,map assistance and other functions is established.The functionalmodules in this platformare designed.The results of J Meter test show that the DBMS can add,store and retrieve information data stably,and it has the advantages of fast response and low error rate.The software system of the urban land planning database developed in this paper can improve the efficiency of storing and managing land data,eliminating redundant data and sharing data. 展开更多
关键词 sOFtWARE DAtABAsE database management system urban land planning MYsQL
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Rapid Urbanization and Environment Management in Nkafu Municipality, Eastern DR Congo
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作者 Alain Tshimbalanga Patient M. Zamukulu +1 位作者 Liévin Chirhalwirwa Katcho Karume 《Journal of Geoscience and Environment Protection》 2023年第10期106-118,共13页
Rapid and uncontrolled urbanization as well as urban land management are major constraints to land planning in the Democratic Republic of Congo. A household data collection and analysis was carried out in 283 random h... Rapid and uncontrolled urbanization as well as urban land management are major constraints to land planning in the Democratic Republic of Congo. A household data collection and analysis was carried out in 283 random households in the Nkafu municipality, eastern DR Congo, to assess the local community’s perception of rapid urbanization and its impact on land policy and management of the built landscape. Data of socio-demographics characteristics, rapid urbanization, and environment management data were collected and analyzed using XLStat version 2019. In addition, the study area location map, land use and cover change maps were generated using ArcMap 10.8. Results indicate that landowners are dominant and, build simple houses with unsustainable building materials (i.e. wooden plank) obtained locally. In addition, land management is not appreciated by local communities, due to anarchic construction due to lack of financial resources generating thus an increasing amount of urban waste, which is poorly managed. The study suggests, urban roads renew, building in conformity with urban planning and building regulations, potable water supply and health services availability to improve the study area. Geographic Information Systems (GIS) use, would provide spatial information on land planning in the study area. 展开更多
关键词 URBANIZAtION Environmental management Land planning Land Reorganization Nkafu Bukavu
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Effective Development of Enterprise Emergency Management under the New Policy of Safety Production
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作者 Ran HUO 《Meteorological and Environmental Research》 CAS 2023年第3期1-5,共5页
In recent years,China has formed a more perfect emergency management system,and has achieved more significant results.The form of safety production has maintained a continuous good development trend,showing the charac... In recent years,China has formed a more perfect emergency management system,and has achieved more significant results.The form of safety production has maintained a continuous good development trend,showing the characteristics of"two declines,one being basically flat,and one zero occurrence".In order to further strengthen the implementation of production safety responsibilities and resolutely prevent and contain extremely major accidents,the recent national production safety teleconference deployed 15 measures to pay close attention to the implementation,seriously pursue accountability,adhere to the red line,and immediately carry out in-depth and solid production safety inspections across the country.In such a high pressure situation,the ways to effectively carry out the security management of enterprises were briefly described in this paper. 展开更多
关键词 EMERGENCY safe production Emergency management Emergency plan suggestions
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Payment for Water-Related Ecosystem Services as a Strategic Watershed Management Approach
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作者 Mariana Beraldi Rigonato Kaline de Mello +1 位作者 Roberta Averna Valente Luiz Carlos Faria 《Journal of Environmental Protection》 2023年第8期660-684,共23页
Payments for ecosystem services (PES) have been created worldwide to assist watershed management and improve or maintain water quality. Considering their importance, we conducted a holistic review of payment for water... Payments for ecosystem services (PES) have been created worldwide to assist watershed management and improve or maintain water quality. Considering their importance, we conducted a holistic review of payment for water-related ecosystem services to understand how this instrument has been applied in watershed management worldwide. First, we identified the watershed management actions considered by the PES programs and the challenges of implementing water-related PES. After we identified the methods and criteria used to define priority areas for water-related PES. Our review considered articles published on the Web of Science from 2011 to 2022. We found 236 articles relating PES to water resources, highlighting the main water conservation strategies: native vegetation conservation, native vegetation restoration, and implementing best agricultural practices. The method most frequent was interview, followed by the use of technologies, document analysis, and hydrological models. Another significant result was that priority areas for receiving PES are mainly riparian zones, areas near or with native vegetation cover, areas with higher erosion potential, steep areas, and areas with socially vulnerable communities. This review was crucial to identify efficient water resource conservation strategies and potential challenges in the implementation and development of PES programs. 展开更多
关键词 Payment for Ecosystem services Water Resources Conservation strategies Watershed management Landscape planning
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CTC系统与SMIS调车数据交互服务平台设计与实现
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作者 温斌宾 周通 +2 位作者 罗常津 黄圣文 王天龙 《铁路计算机应用》 2024年第1期78-82,共5页
为解决调度集中(CTC,Centralized Traffic Control)系统无法获取调车作业计划数据、仍使用人工排列调车进路方式的问题,在现有CTC系统与车站综合管理信息系统(SMIS,Synthesized Management Information System)应用基础上,构建调车数据... 为解决调度集中(CTC,Centralized Traffic Control)系统无法获取调车作业计划数据、仍使用人工排列调车进路方式的问题,在现有CTC系统与车站综合管理信息系统(SMIS,Synthesized Management Information System)应用基础上,构建调车数据交互服务平台,并对该平台的总体架构、功能应用及平台支撑下的流程设计展开研究。通过基于边缘计算的数据采集与处理、调车作业计划数据安全防护等关键技术,高效地实现了调车作业计划的数据采集、数据分发、数据集成及平台监控等功能。调车数据交互服务平台已在中国铁路武汉局集团有限公司部分车站投入使用,显著提升了作业人员的工作效率,保障了调车作业进路排列的准确性和安全性。 展开更多
关键词 调车作业计划 调度集中(CtC)系统 综合管理信息系统(sMIs) 调车数据 数据交互服务平台
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4DCT联合呼吸管理对NSCLC SBRT治疗精度的影响
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作者 祖国红 孙美丽 +3 位作者 窦岩 岳晨曦 汪延明 赵惠 《中国卫生标准管理》 2024年第19期88-92,共5页
目的通过对比四维X线断层扫描(four dimension computed tomography,4DCT)联合呼吸门控、腹部加压以及自由呼吸模式下立体定向放射治疗(stereotactic body radiotherapy,SBRT)计划参数的对比,分析呼吸管理对肿瘤靶区体积、剂量精度的影... 目的通过对比四维X线断层扫描(four dimension computed tomography,4DCT)联合呼吸门控、腹部加压以及自由呼吸模式下立体定向放射治疗(stereotactic body radiotherapy,SBRT)计划参数的对比,分析呼吸管理对肿瘤靶区体积、剂量精度的影响。方法选取2021年10月—2022年12月在山东第一医科大学附属中心医院肿瘤科就诊的12例早期非小细胞肺癌(non-small cell lung cancer,NSCLC)采用立体定向放射治疗的患者,分别设计3套图像计划,每套图像12例为一组。搜集4DCT扫描图像,按呼吸时相将CT数据重建,分层处理得到0%~90%图像(0%为吸气末,50%为呼气末),勾画各时相肿瘤靶区,利用最大密度投影融合成全时相图像,用来模拟自由呼吸模式下的普通CT图像(FB'组);将30%~70%时相图像用最大密度投影融合,因其与利用呼吸附件腹部加压后其呼吸时相相同,定义为腹部适度加压组图像(RA'组);将吸气末0%时相图像模拟主动呼吸控制状态图像(ABC'组)。在这3组图像上分别得到肿瘤靶区、肿瘤内靶区及计划靶区,比较3组治疗模式中肿瘤靶区及危机器官剂量学差异。结果(1)ABC'组、RA'组及FB'组肿瘤内靶区体积值差异有统计学意义(P<0.05)。计划靶区适形性指数、均匀性指数、5%计划靶区(planned target volume,PTV)体积的剂量及体积的剂量、及95%PTV体积的剂量差异均无统计学意义(P>0.05)。(2)ABC'组、RA'组及FB'组患者计划靶区双肺剂量5 Gy照射时的百分体积、双肺剂量20 Gy照射时的百分体积、平均肺剂量,差异有统计学意义(P<0.05)。心脏最大剂量、<15 cm^(3)体积的剂量示RA'组、ABC'组均略低于FB'组,但差异无统计学意义(P>0.05)。结论在非小细胞肺癌立体定向放射治疗中应用呼吸门控、适度腹部加压等呼吸管理方式联合4DCT,较自由呼吸模式下的FB'组有效地减小肿瘤内靶区体积、双肺剂量5 Gy的百分体积、双肺剂量20 Gy的百分体积、平均肺剂量等指标,减少呼吸动度对靶区的影响,提高定位、治疗的精度。腹部加压呼吸管理技术是对呼吸门控呼吸管理技术不适应者的一种有效补救措施。 展开更多
关键词 四维X线断层扫描 联合呼吸管理 非小细胞肺癌 立体定向放射治疗 治疗计划 精度影响
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Overall plan and design of the task management system of ternary optical computer 被引量:3
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作者 宋凯 金翊 《Journal of Shanghai University(English Edition)》 CAS 2011年第5期467-472,共6页
t In this paper an overall scheme of the task management system of ternary optical computer (TOC) is proposed, and the software architecture chart is given. The function and accomplishment of each module in the syst... t In this paper an overall scheme of the task management system of ternary optical computer (TOC) is proposed, and the software architecture chart is given. The function and accomplishment of each module in the system are described in general. In addition, according to the aforementioned scheme a prototype of TOC task management system is implemented, and the feasibility, rationality and completeness of the scheme are verified via running and testing the prototype. 展开更多
关键词 ternary optical computer tOC) task management system overall plan task scheduling processor resource allocation
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Assessment of Diversity, Distribution, Conservation Status and Preparation of Management Plan for Medicinal Plants in the Catchment Area of Parbati Hydroelectric Project Stage-Ⅲ in Northwestern Himalaya 被引量:4
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作者 S.S. Samant Jitendra S. Butola Aman Sharma 《Journal of Mountain Science》 SCIE CSCD 2007年第1期34-56,共23页
The developmental activities, particularly the construction of hydroelectric projects are causing a great loss of biodiversity in the Indian Himalayan Region. The Himaehal Pradesh, a part of IHR is well known for the ... The developmental activities, particularly the construction of hydroelectric projects are causing a great loss of biodiversity in the Indian Himalayan Region. The Himaehal Pradesh, a part of IHR is well known for the development of hydroelectric projects. The Parbati H.E. Project is amongst the major projects of the State. The different stages of the project are all causing loss of biodiversity of the area. Stage Ⅲ of the Parbati H.E. Project is a run of the river scheme on the Sainj River downstream of Power House of Parbati H.E. Project Stage Ⅱ. The project shall utilize regulated discharge of Parbati H.E. Project Stage Ⅱ and inflow of River Sainj for power generation, and has been contemplated as a peaking station operating in tandem with Stage Ⅱ. The present study has been undertaken to see the impact of hydroelectric project on the biodiversity, particularly on medicinal plants. A total of 104 species of medicinal plants, belonging to different life forms, i.e., trees (23 spp.), shrubs (22 spp.), herbs (57 spp.) and ferns (2 spp.) were recorded. The species have been analyzed and studied for their distribution, classification, altitudinal zones, part (s) used, indigenous uses, nativity, endemism and rarity.Different parts of these species, such as whole plants, roots (including rhizomes and tubers), leaves, flowers, fruits, seeds, stems, barks, spikes, nuts and insect galls are used by the inhabitants for curing various diseases and ailments. 3o species are native to the Himalayan region, 9 species native to the Himalayan region and adjacent countries also and 65 species are non-natives. 9 species are near endemics. Considering the whole Himalaya as a biogeographie unit (sensu lato), the near endemics are endemic to the Himalaya. Among these species, Zanthoxylum armature is categorized as Endangered and Valeriana wallichii as Vulnerable. Hedychium spicatum, Rhus javanica, Berberis lycium, Thalictrum foliolossum, Salvia lanata, Rubia cordifolia and Bergenia ligulata may be considered as threatened species due to their over exploitation for trade. 90 species are propagated by seeds, 8 species by seeds and rhizomes/roots/tubers, 4 species by seeds and cuttings, and 2 species by sori. A management plan for the cultivation and conservation of the medicinal plants in the dam submergence area, and the commercially viable medicinal plants with high value in the catchment area is suggested. 展开更多
关键词 Hydroelectric project dam submergence area management plan medicinal plant DIVERsItY native endemic ENDANGERED conservation status indigenous uses Indian Himalaya
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