检索结果-南通市图书馆

采用MIGIS和PRA进行哈尼族贫困地区的村落规划

在线全文

学校读者我要写书评

暂无评论

林业经济问题 2002年第2期22卷 66-69页

作者：马焕成蔡葵刘伟平 Jack McConchie John mckinnon jean mckinnon 西南林学院生态工程研究所云南昆明650224 云南省地理研究所云南昆明650206 福建农林大学经济与管理学院福建福州350003 Institute of Geography School of Earth SciencesVictoria University of WellingtonWellingtonNew Zealand KISA WellingtonNew Zealand

采用交互式可移动地理信息系统和参与性农村评估方法对云南省绿春县巴东乡的哈尼族村寨进行了研究。通过与村民一起绘制不同年代的资源图 ,并一同分析过去 1 0年中造成森林减少的原因及其与贫困的关系 ,尤其通过计算机直观模拟森林变化... 详细信息

采用交互式可移动地理信息系统和参与性农村评估方法对云南省绿春县巴东乡的哈尼族村寨进行了研究。通过与村民一起绘制不同年代的资源图 ,并一同分析过去 1 0年中造成森林减少的原因及其与贫困的关系 ,尤其通过计算机直观模拟森林变化的情况 ,使村民认识到他们目前所面临的环境问题。

关键词： MIGIS PRA 哈尼族贫困地区村落规划交互式可移动地理信息系统参与性农村评估土地资源可持续发展环境保护

Strengthen the Environmental Sense of Local Community with PRA and MIGIS

在线全文

学校读者我要写书评

暂无评论

Journal of Geographical Sciences 2000年第2期10卷 177-184页

作者： CAI Kui, MA Huan-cheng, John McDinnon, Jack McConchie, jean mckinnon (Yunnan Institute of Geography, Kunming 650092, China, Southwest Forestry College,Kunming 650092, China, 3. School of Earth Science, Wellington-Victoria University,Wellington, New Zeal 云南地理所云南昆明西南林学院云南昆明 Wellington-Victoria University 新西兰 KISA 新西兰

It was widely recognized that rural development especially rural development in the poor areas is closely related with environment issue. It is also common bias that farmers in the poor areas lack of environmental awareness, and their production activities directly cause the environment degradation. The study has shown that with appropriate outside facilitation. a poor rural community can not only analyze its environmental problem, but can also make feasible planning to recover the problem.

关键词： rural community PRA, MIGIS

Microplastics and microbiota:Unraveling the hidden environmental challenge

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第16期30卷 2191-2194页

作者： jean Demarquoy Universitéde Bourgogne Institut Agro-DijonDijon 21000France

This editorial explores the intricate relationship between microplastics(MPs)and gut microbiota,emphasizing the complexity and environmental health *** gut microbiota,a crucial component of gastrointestinal health,is examined in the context of potential microbial degradation of ***,dysbiosis induced by MPs emerges as a consensus,disrupting the balance of gut microbiota and decreasing *** mechanisms triggering dysbiosis,including physical interactions and chemical composition,are under *** research addresses the consequences of MPs on immune function,nutrient metabolism,and overall host *** bidirectional relationship between MPs and gut microbiota has significant implications for environmental and human *** uncertainties,MPs negatively impact gut microbiota and *** research is essential to unravel the complex interactions and assess the long-term consequences of MPs on both environmental and human well-being.

关键词： Microplastics Microbiota Gut Dysbiosis

Bound and Resonating Multiquark Configurations

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2024年第8期41卷 8-12页

作者： jean-Marc Richard Institut de Physique des 2 Infinis de Lyon Université Claude Bernard(Lyon 1) CNRS-IN2P34 rue Enrico Fermi69622 VilleurbanneFrance

We review the predictions of quark models for multiquark configurations that are bound or resonant states,and compare different methods for estimating the properties of resonances.

关键词： quark Configuration resonant

Multi-source information fusion:Progress and future

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Aeronautics 2024年第7期37卷 24-58页

作者： Xinde LI Fir DUNKIN jean DEZERT School of Automation Southeast UniversityNanjing 210008China Nanjing Center for Applied Mathematics Nanjing 211135China Key Laboratory of Measurement and Control of CSE Ministry of EducationNanjing 210096China Southeast University Shenzhen Research Institute Shenzhen 518063China Information Modeling and Processing Department ONERAPalaiseau 92320France

Multi-Source Information Fusion(MSIF),as a comprehensive interdisciplinary field based on modern information technology,has gained significant research value and extensive application prospects in various domains,attracting high attention and interest from scholars,engineering experts,and practitioners *** achieving fruitful results in both theoretical and applied aspects over the past five decades,there remains a lack of comprehensive and systematic review articles that provide an overview of recent development in *** light of this,this paper aims to assist researchers and individuals interested in gaining a quick understanding of the relevant theoretical techniques and development trends in MSIF,which conducts a statistical analysis of academic reports and related application achievements in the field of MSIF over the past two decades,and provides a brief overview of the relevant theories,methodologies,and application domains,as well as key issues and challenges currently ***,an analysis and outlook on the future development directions of MSIF are presented.

关键词： Multi-sensor system Information fusion Artificial intelligence Pattern recognition Human-machine integration

Design and Experimental Testing of a Moving Coil Actuator with Compensation Coil

在线全文

学校读者我要写书评

暂无评论

CSEE Journal of Power and Energy Systems 2024年第2期10卷 707-716页

作者： Boyuan Yin Xianwu Zeng John Frederick Eastham Emelie Nilsson jean-francois Rouquette jean Rivenc Ludovic Ybanez Xiaoze Pei Department of Electronics&Electrical Engineering University of BathBathBA27AYUnited Kingdom Airbus UpNext BlangnacFrance Airbus CRT BlangnacFrance Department of Mechanical Engineering University of BathBathBA27AYUnited Kingdom

Hydrogen-powered electric aircraft have attracted significant interests aiming to achieve decarbonization *** DC electric networks are facing great challenges in DC fault protection *** interrupters are widely used in low voltage and medium voltage power systems due to being environmentally friendly with low *** this paper a moving coil actuator with compensation coils for a vacuum interrupter,as part of a hybrid direct current circuit breaker,is designed and experimentally *** coils are used to improve operating speed compared with original moving coil *** between four possible connections of compensation coils and original moving coil actuator are carried *** results show comparisons between different connections of actuator coils in terms of opening time and coil current with a range of pre-charged capacitor *** performance of each actuator connection is also *** actuator with compensation coils is shown to have a higher current rising rate and achieve faster opening speed,which is a critical requirement for electric aircraft network *** parallel connection actuator achieves the highest opening speed within 3.5 ms with capacitor voltage of 50 V.

关键词： Circuit breaker compensation coil moving coil actuator vacuum interrupter

Tanaka Formula and Local Time for a Class of Interacting Branching Measure-valued Diffusions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第4期40卷 1059-1098页

作者： Donald A.DAWSON jean VAILLANCOURT Hao WANG School of Mathematics and Statistics Carleton UniversityOttawaCanada Department of Decision Sciences HECMontrealCanada Department of Mathematics University of OregonEugeneUSA

We construct superprocesses with dependent spatial motion(SDSMs)in Euclidean spaces R^(d)with d≥1 and show that,even when they start at some unbounded initial positive Radon measure such as Lebesgue measure on R^(d),... 详细信息

关键词： Measure-valued diffusions stochastic partial differential equations superprocesses branching processes local time Tanaka formula

High-performance nickel metal hydride battery anode with enhanced durability and excellent low-temperature discharge capability

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第10期17卷 8819-8825页

作者： Zhitao Chen Huitian Liu jean Nei Nian Liu School of Chemical and Biomolecular Engineering Georgia Institute of TechnologyAtlantaGA 30332USA GP Batteries HongkongChina

Current AB_(5)-type hydrogen storage alloys employed in nickel-metal hydride(NiMH)batteries exhibit exceptional low-temperature discharge performance but suffer from limited cycle life and insufficient high-temperature *** overcome these challenges,we introduce a hydrothermal synthesized LaF_(3)coating layer on the surface of the AB_(5)anode *** LaF_(3)coating layer adds a protective barrier for the active material,significantly improving the battery's cycle life and high-temperature *** findings indicate that(1)the LaF_(3)coated anode demonstrates an extended cycle life with increased specific capacity and a capacity retention of 88%after 40 cycles of abusive overcharging and rapid discharging at room temperature.(2)The synthesized anode exhibits a 97%recovery of its specific capacity of 292.7 mAh/g following 144 h of high-temperature storage.(3)The low-temperature discharge capacity of the synthesized anode remains on par with the pristine AB_(5)alloy at 230.4 mAh/g in a-40℃*** research presents a significant advancement in hydrogen storage alloy coatings and offers valuable insights for designing electrodes in NiMH batteries.

关键词： nickel metal hydride(NiMH)batteries hydrothermal synthesis lanthanum fluoride discharge capacity low temperature

A convolutional neural network to detect possible hidden data in spatial domain images

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cybersecurity 2024年第1期7卷 37-52页

作者： jean De La Croix Ntivuguruzwa Tohari Ahmad Department of Informatics Institut Teknologi Sepuluh Nopember(ITS)Kampus ITS Keputih SukoliloSurabaya60111Indonesia African Center of Excellence in the Internet of Things College of Science and TechnologyUniversity of Rwanda3900KigaliRwanda

Hiding secret data in digital multimedia has been essential to protect the ***,attackers with a steganalysis technique may break *** steganalysis methods have good results with conventional Machine Learning(ML)techniques;however,the introduction of Convolutional Neural Network(CNN),a deep learning paradigm,achieved better performance over the previously proposed ML-based *** the existing CNN-based approaches yield good results,they present performance issues in classification accuracy and stability in the network training *** research proposes a new method with a CNN architecture to improve the hidden data detection accuracy and the training phase stability in spatial domain *** proposed method comprises three phases:pre-processing,feature extraction,and ***,in the pre-processing phase,we use spatial rich model filters to enhance the noise within images altered by data hiding;secondly,in the feature extraction phase,we use two-dimensional depthwise separable convolutions to improve the signal-to-noise and regular convolutions to model local features;and finally,in the classification,we use multi-scale average pooling for local features aggregation and representability enhancement regardless of the input size variation,followed by three fully connected layers to form the final feature maps that we transform into class probabilities using the softmax *** results identify an improvement in the accuracy of the considered recent scheme ranging between 4.6 and 10.2%with reduced training time up to 30.81%.

关键词： Information security Spatial domain steganalysis Deep learning Convolutional neural network Infrastructure