Results 11 to 20 of about 1,703,447 (187)
Characteristic Analysis and Processing Suitability Clustering of Common Potato Cultivars(常见马铃薯品种特性分析及加工适宜性分类) [PDF]
Shipin kexue jishu xuebao, 2016 China is one of the world’s largest countries in potato production and consumption. Cultivar differences have significant effects on the quality and yield of potato products. In order to choose proper potato materials for optimal products’ processing and
YANG Bingnan(杨炳南) +5 more
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Identification of Compositions of Amomum tsao-ko Essential Oil Using GC-MS and Its Antibacterial Activity(草果精油成分鉴定及其抗菌活性研究) [PDF]
Shipin kexue jishu xuebao, 2013 The Amomum tsao-ko essential oil was obtained by the Clevenger method. A total of 38 constituents were detected by GC-MS in which 30 compounds accounting for 9714% were identified by the RI (retention index) method.
MENG Da-wei(孟大威) +5 more
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基于过程视角的我国政府数据共享流通管道建设关键问题和策略研究
大数据, 2023 探讨了数据流通管道的概念及组成要素，从政府数据管理部门实施数据共享的中观管理推进角度，构建面向共享全过程的我国政府数据共享流通分析框架，结合学术界提出的影响分析维度，基于对全国主要政府数据管理部门的调研分析，明晰我国政府数据共享流通管道的最新情况，分析明确当前最主要的影响因素与关键问题，进而围绕政府数据共享流通管道的技术平台、组织制度、数据资源三大组成要素，提出针对性建设策略建议。
王跃
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Quantitative appraisal and limiting factors analysis of sustainable development(可持续发展的定量评价与限制因子分析)
Zhejiang Daxue xuebao. Lixue ban, 2001 本文探讨了一套可持续发展定量评价中指标体系建立、指标筛选、指标权重确定及可持续发展程度判定模型建立的思路和方法.首先，提出了在主成分分析基础上进一步筛选可持续发展指标和利用主成分指标在第1主成分中的系数绝对值判定指标权重的方法，以减小当前指标筛选和权重确定的主观性影响；其次，提出了利用主成分指标在第1，第2主成分中的系数符号判定可持续发展限制因子的方法；最后，运用上述方法对萧山市可持续发展进行了定量评价.
LINDao-hui(林道辉) +4 more
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Zhejiang Daxue xuebao. Lixue ban, 2000 本文以依存语法作为语言模型的基础，首先提出了一种全新的句子分析策略：分析在两级上进行。一级是基于中心动词同其他成分间的约束关系，通过寻找汉语语义类之间可能存在的句法关系，实现句子成分过滤，完成句子主干提取。另一级是上下文级，将语法、语义和语境信息一体化，结合依存语法确定汉语句子中各成分间的依存关系。之后给出了一种快速有效的用于完成句子分析的松弛匹配迭代算法。通过实验表明了该分析策略和算法的可行性。
GUOYan-hua(郭艳华) +1 more
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Integrative Conservation, EarlyView.This study used camera trap data from 6 years between 2016 and 2021 and generalized linear mixed models to explore the factors that influence the spatial density distribution of lynx and its prey populations in warm and cold seasons in Inner Mongolia Hanma National Nature Reserve, China.
Wentao Zhang +11 more
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Wildlife Letters, EarlyView.Human‐caused leopard deaths in Sri Lanka averaged 9.65 ± 4.5 records year−1 over 17 years (2008–2024; n = 164), with records highly clustered in the central highland mosaic ecosystem. Mortality was dominated by adult males and driven primarily by snaring in plantation landscapes, and indicating an increase approximately 0.7–0.8 deaths per year.
Sanjaya Weerakkody +11 more
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Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Grasslands worldwide are experiencing severe degradation due to overgrazing, climate change and anthropogenic disturbances, resulting in substantial declines in biodiversity and ecosystem functioning.
Xiaoqi Wang +5 more
wiley +1 more source
大数据, 2022 情感分析是对信息情感倾向的挖掘，主要用于舆情监测、商品评论分析以及信息检索等方面。随着社交媒体的快速发展，文本数据量呈现爆炸性增长，文本情感分析成为自然语言处理领域重要的研究热点之一。与此同时，由于情感数据具有海量、时变、非结构性、强关联性的特点，能够直观高效地呈现情感倾向的可视分析技术在这个领域得到广泛应用。回顾了近年来的情感可视分析研究，从表现形式——“主题词”“关联”“演变”“时空分布”4个方面阐述文本情感可视分析方法，并对未来情感分析技术及文本情感可视分析研究进行展望。
张伶俐 +6 more
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Organ‐specific ozone and nitrogen legacies strengthen substrate control over litter decomposition
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Elevated tropospheric ozone (O3) and nitrogen (N) deposition are concurrent atmospheric changes that strongly influence terrestrial carbon cycling, yet their combined effects on below‐ground decomposition remain poorly understood.
Xiaofan Hou +8 more
wiley +1 more source