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Effects of thinning on scatter-hoarding by rodents in temperate forest

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Integrative Zoology 2016年第3期11卷 182-190页

作者： yifeng zhang Jing YU Alfred M.SICHILIMA Weirui WANG Jiqi LU Institute of Biodiversity and Ecology Zhengzhou UniversityZhengzhouChina Department of Basic Sciences School of MedicineCopperbelt UniversityNdolaZambia

Deforestation and thinning are human activities that can destabilize the forest ecological system and,consequently,impact significantly on habitat and behavior of forest-dwelling *** hypothesis was tested in Yugong in the Mount Taihangshan area by comparing the tracks of tagged seeds of Armeniaca *** sites of unthinned and thinned *** results showed that:(i)the diversity of vegetation and rodents drastically reduced in sites with thinned forests,compared to unthinned sites;(ii)the amount of both removed and scatter-hoarded seeds significantly declined in sites with thinned forests,compared with the unthinned sites;(iii)there was no significant difference observed in the distance of seed dispersal between the thinned and unthinned areas;and(iv)the thinning did not show a significant change to the model of cache *** results suggested that the thinning of forests negatively influenced the species richness and food-hoarding behavior of *** addition,the results indicated that the weakened scattered-hoarding might be disadvantageous to seedling recruitment and forest restoration.

关键词： forest thinning hoarding behavior rodents seed fate species richness

ENTREPRENEURIAL OPPORTUNITY,VALUE EVOLUTION,AND ORGANIZATIONAL INTEGRATION OF PROFESSIONAL FARMER ENTREPRENEURSHIP:A MULTI-CASE COMPARISON IN CHINA

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Frontiers of Agricultural Science and Engineering 2023年第1期10卷 135-148页

作者： yifeng zhang Chunfang YANG Bright OBUOBI Martin Kobby GRANT College of Management Shandong Vocational University of Foreign AffairsRushan 264504China College of Economics and Management Nanjing Forestry UniversityNanjing 210037China

A comparative multi-case analysis of professional farmer entrepreneurship cases in China was performed by applying the structural hole *** results confirmed four views.(1)Choosing the modern agriculture project entrepreneurship is rational for professional farmers,who return from urban,to reduce the interference from non-market *** success of this project stems from its ability to successfully occupy the structural hole of the market trading network.(2)In economically developed areas,professional farmers start their businesses and reduce transaction costs with factors by occupying‘self-benefit’or‘mutual-benefit’structural holes in market networks.(3)In traditional agricultural areas,for reducing factor transaction costs,professional farmers occupy the organizational-governance structural hole of rural social relationship networks and the mutual-benefit structural hole of market networks to start their businesses.(4)The embedding order of these two structural holes will change depending on the differences in the local resource *** article proposes some suggestions to encourage professional farmers to develop featured agricultural projects,build a close benefit-linked mechanism with smallholders through the provision of socialized services,and participate in the governance of rural communities.

关键词： Benefit-linked mechanism featured agriculture organizational integration professional farmers rural cooperative structural hole theory

Game theory based finite-time formation control using artificial potentials for tethered space net robot

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Chinese Journal of Aeronautics 2024年第8期37卷 358-372页

作者： yifeng MA Yizhai zhang Panfeng HUANG Ya LIU Fan zhang The Research Center for Intelligent Robotics School of AstronauticsNorthwestern Polytechnical UniversityXi’an 710072China School of Electronic Information and Electrical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

The Tethered Space Net Robot(TSNR)is an innovative solution for active space debris capture and *** large envelope and simple capture method make it an attractive option for this ***,capturing maneuverable debris with the flexible and elastic underactuated net poses significant *** address this,a novel formation control method for the TSNR is proposed through the integration of differential game theory and robust adaptive control in this ***,the trajectory of the TSNR is obtained through the solution of a real-time feedback pursuit-evasion game with a dynamic target,where the primary condition is to ensure the stability of the ***,to minimize tracking errors and maintain a specific configuration,a robust adaptive formation control scheme with Artificial Potential Field(APF)based on a Finite-Time Convergent Extended State Observer(FTCESO)is *** proposed control method has a key advantage in suppressing complex oscillations by a new adaptive law,thus precisely maintaining the ***,numerical simulations are performed to demonstrate the effectiveness of the proposed scheme.

关键词： Game theory Formation control Artificial potential field Relative distance constraint Tethered space net robot(TSNR)

丁苯酞联合胞磷胆碱钠治疗急性进展性脑梗死的疗效

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中国药物与临床 2024年第4期24卷 252-255页

作者：章依峰刘振东陶培淦绍兴市中心医院全科浙江绍兴312030

目的探究丁苯酞联合胞磷胆碱钠治疗急性进展性脑梗死的疗效及对血清氧化应激和炎症因子的影响。方法回顾性选取绍兴市中心医院2021年1月至2023年2月收治的急性进展性脑梗死患者120例,将研究对象是否使用丁苯酞联合胞磷胆碱钠治疗分为观... 详细信息

目的探究丁苯酞联合胞磷胆碱钠治疗急性进展性脑梗死的疗效及对血清氧化应激和炎症因子的影响。方法回顾性选取绍兴市中心医院2021年1月至2023年2月收治的急性进展性脑梗死患者120例,将研究对象是否使用丁苯酞联合胞磷胆碱钠治疗分为观察组和对照组各60例,对照组采取常规治疗,观察组采取丁苯酞联合胞磷胆碱钠治疗,比较2组患者的疗效、血清丙二醛(MDA)、超氧化物歧化酶(SOD)、血浆髓过氧化物酶(MBP),比较2组患者白细胞介素(IL)-6、C反应蛋白(CRP)、IL-8差异。结果观察组有效率(92%,55/60)高于对照组(75%,45/60)(P0.05),干预后观察组患者的MDA、MBP低于对照组,SOD高于对照组(P0.05),干预后观察组的IL-6、CRP、IL-8低于对照组(P<0.05)。结论丁苯酞联合胞磷胆碱钠治疗急性进展性脑梗死有较好的疗效,对血清氧化应激和炎症因子均有影响,值得在临床推广使用。

关键词：脑梗死丁苯酞胞磷胆碱钠丙二醛超氧化物歧化酶白细胞介素-8

CEUS联合2DUS对乳腺良恶性病变的诊断价值

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肿瘤影像学 2024年第1期33卷 69-74页

作者：张绅刘云云张一峰徐辉雄南京医科大学上海十院临床医学院上海200072 同济大学附属第十人民医院超声科上海200072

目的:以病理学检查为“金标准”,探讨超声造影(contrast-enhanced ultrasound,CEUS)联合二维超声(2D ultrasound,2DUS)对乳腺良恶性病变的鉴别诊断价值。方法:收集2018年2月—2023年8月于同济大学附属第十人民医院行乳腺2DUS及CEUS检查... 详细信息

目的:以病理学检查为“金标准”,探讨超声造影(contrast-enhanced ultrasound,CEUS)联合二维超声(2D ultrasound,2DUS)对乳腺良恶性病变的鉴别诊断价值。方法:收集2018年2月—2023年8月于同济大学附属第十人民医院行乳腺2DUS及CEUS检查并经病理学检查确诊的1 299例女性乳腺病变患者。患者进行2DUS乳腺影像报告和数据系统(Breast Imaging Reporting and Data System,BI-RADS)分类和CEUS联合2DUS检查,对比分析乳腺良恶性病变的CEUS特征,以及两种检查方式下的灵敏度、特异度、准确度、阳性预测值和阴性预测值。结果:根据病理学检查结果将1 299例患者分为良性病变组807例和恶性病变组492例,与2DUS BI-RADS分类检查相比较,CEUS联合2DUS检查的灵敏度(96.1%)及准确度(88.8%)均明显提高,并且针对BI-RADS 4类病变良恶性检出具有较高的灵敏度(95.9%)。结论:CEUS联合2DUS能够显著提高对乳腺良恶性病变的鉴别诊断效能,具有较高的诊断价值。

关键词：乳腺癌二维超声超声造影乳腺影像报告和数据系统

Subcutaneous and intramuscular fat transcriptomes show large differences in network organization and associations with adipose traits in pigs

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Science China(Life Sciences) 2021年第10期64卷 1732-1746页

作者： yifeng zhang Yingchun Sun Zhongzi Wu Xinwei Xiong Junjie zhang Junwu Ma Shijun Xiao Lusheng Huang Bin Yang State Key Laboratory of Pig Genetic Improvement and Production Technology Jiangxi Agricultural UniversityNanchang 330045China

Subcutaneous fat(SCF)and intramuscular fat(IMF)deposition is relevant to health in humans,as well as meat production and quality in *** this study,we generated RNA sequence data for 122 SCF,120 IMF,and 87 longissimus dorsi muscle(LDM)samples using 155 F6 pigs from a specially designed heterogeneous population generated by intercrossing four highly selected European commercial breeds and four indigenous Chinese pig *** phenotypes including waist back fat thickness and intramuscular fat content were also measured in the 155 F6 *** found that the genes in SCF and IMF differed largely in both expression levels and network connectivity,and highlighted network modules that exhibited strongest gain of connectivity in SCF and IMF,containing genes that were associated with the immune process and DNA double-strand repair,*** identified 215 SCF genes related to kinase inhibitor activity,mitochondrial fission,and angiogenesis,and 90 IMF genes related to lipolysis and fat cell differentiation,displayed a tissue-specific association with back fat thickness and IMF content,*** found that cis-expression QTL for trait-associated genes in the two adipose tissues tended to have tissuedependent predictability for the two adipose *** splicing of genes was also found to be associated with SCF or IMF deposition,but the association was much less extensive than that based on expression *** study provides a better understanding of SCF and IMF gene transcription and network organization and identified critical genes and network modules that displayed tissue-specific associations with subcutaneous and intramuscular fat *** features are helpful for designing breeding programs to genetically improve the two adipose traits in a balanced way.

关键词： pig transcriptome subcutaneous fat intramuscular fat network gene connectivity gene splicing

PDCA在医院网络信息安全管理中的实践应用

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中国医院建筑与装备 2024年第1期25卷 57-60页

作者：张轶锋赵晴峰蔡俊杰毛自强浙江省肿瘤医院中国科学院杭州医学研究所杭州310022

调查分析了2020年全年及2021年3月浙江省肿瘤医院网络信息设备的网络安全数据;运用PDCA(Plan、Do、Check、Action)循环法,针对问题提出对策,在2021年3月至11月期间,通过头脑风暴、修订制度、配置网络安全设备等办法,对院内网络信息安全... 详细信息

调查分析了2020年全年及2021年3月浙江省肿瘤医院网络信息设备的网络安全数据;运用PDCA(Plan、Do、Check、Action)循环法,针对问题提出对策,在2021年3月至11月期间,通过头脑风暴、修订制度、配置网络安全设备等办法,对院内网络信息安全问题进行了全面的管控。实践效果表明,PDCA循环法是医院网络信息安全管理的有效方法。

关键词：医院网络信息安全信息化建设网络信息设备 PDCA循环

From primary instabilities to secondary instabilities in Görtler vortex flows

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Advances in Aerodynamics 2019年第1期1卷 379-391页

作者： Xi Chen Jianqiang Chen Xianxu Yuan Guohua Tu and yifeng zhang State Key Laboratory of Aerodynamics China Aerodynamics Research and Development CenterMianyangChina Computational Aerodynamics Institute China Aerodynamics Research and Development CenterMianyangChina

We have studied the transformation process from primary instabilities to secondary instabilities with direct numerical simulations and stability theories(Spatial Biglobal and plane-marching parabolized stability equations)in *** Mack mode and second Mack mode are shown to be able to evolve into the sinuous mode and the varicose mode of secondary instability,*** the characteristics of second Mack mode eventually lose in the downstream due to the synchronization with the continuous spectrum,second Mack mode is found to be able to trigger a sequence of mode resonations which in turn give birth to highly unstable secondary *** contrast,first Mack mode does not involve in any mode ***,it can still“jump”to a sinuous mode of secondary instability with a much larger growth rate than that of the first Mack ***,secondary instabilities of Görtler vortices are highly receptive to the primary instabilities in the upstream,so that one should consider the primary instability in the upstream and the secondary instability in the downstream as a whole in order to get an accurate prediction of the boundary layer transition.

关键词： Primary instability Secondary instability Görtler vortices

基于FC+OBE理念的食品工厂设计教学体系改革与实践

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化工管理 2024年第24期 66-70页

作者：赵鑫周励王铭悦张艺峰杨巍巍沈阳医学院辽宁沈阳110034

食品工厂设计是食品质量与安全专业的核心课程,但传统教学模式存在不足之处,难以适应食品行业发展对人才的需求。因此,文章基于FC+OBE理念,借助长江雨课堂平台构建线上线下混合式教学模式,以培养具备扎实专业知识、较强创新实践能力以... 详细信息

食品工厂设计是食品质量与安全专业的核心课程,但传统教学模式存在不足之处,难以适应食品行业发展对人才的需求。因此,文章基于FC+OBE理念,借助长江雨课堂平台构建线上线下混合式教学模式,以培养具备扎实专业知识、较强创新实践能力以及良好职业素养的人才为目标。在推进思政教育的同时优化教学内容,构建多元化考核评价体系,真实反馈教学效果。课程实践结果表明,学生较为满意基于FC+OBE教学理念的线上线下混合式教学模式,已达到预期效果。

关键词：食品工厂设计 FC+OBE 线上线下混合式教学食品质量与安全