Results 41 to 50 of about 4,527 (205)
2-HC- extendability of generalized Petersen graphs(广义Petersen图的2-HC-可扩性)
Zhejiang Daxue xuebao. Lixue banIn 2012, MIKLAVIC et al gave the definition of the l-HC- extendability by combining the extendability of connected graphs with hamiltonicity. Based on their study, a connected graph Γ is l-HC- extendable if it contains a path of length l and every such
王锦伟(WANG Jinwei)
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野生动物学报, 2021 雉鸡的亚种众多，在其表型与遗传上具有地理变异。雉鸡的一些亚种适应于不同的地理条件（例如：寒带、热带、干旱区、高原）形成了独特的群体形态特征，尤其体现在雄性个体的羽色图案上。羽色图案的复杂性给雉鸡亚种的人工鉴定带来了挑战，为此，本研究探索应用图像识别技术对雉鸡亚种进行识别。对3种识别算法：K近邻分类算法，概率神经网路和符号分类器进行了比较。通过序列前向选择法、序列后向选择法、序列浮动前向选择法和序列浮动后向选择法等算法对差异纹理特征进行提取和比较。本研究对25个雉鸡亚种的高质量博物馆标本的图片进行分析验证。
王彪 王筠 屈军乐
doaj
Policy Studies Journal, EarlyView.Abstract Collaborative governance is an emerging phenomenon through which governments nowadays are seeking to address today's societal challenges. Oftentimes, this requires governments to assume different roles and responsibilities. To unpack this multidimensionality, this study establishes an integrative framework distinguishing between a leading ...
Erin Sullivan +2 more
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Coproduction as a Causal Process
Policy Studies Journal, EarlyView.ABSTRACT That many public goods and services are coproduced jointly by government agencies (regular producers) together with clients and citizens (consumer producers) represents a fundamental insight, although it has proven a challenge to define coproduction clearly and to study it rigorously.
Gregg G. Van Ryzin
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k路覆盖图的新充分条件(New sufficient conditions on k -path-coverable graphs)
Zhejiang Daxue xuebao. Lixue ban, 2019 Let G be a simple connected graph of order n. A graph G is k-path-coverable if its vertex set V ( G ) can be covered by kor fewer vertex-disjoint paths. In this paper, we give some new sufficient conditions for a graph to be k-path-coverable in terms of ...
JIAHuicai(贾会才)
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Zhejiang Daxue xuebao. Lixue ban, 2000 本文采用微量量热法测定了两种石油菌在不同温度下的生长热谱图。按限制性条件下微生物生长模型，用三点法进行了数学处理，得出了生长速率常数（k）；计算机拟合k-T非线性方程，得到了石油菌I,II的最佳生长温度(Topt)分别为322.07K和322.85K。按阿仑尼乌斯公式和过渡态理论计算得到有关热动力学函数，并根据所得结果对两种石油菌的生长代谢过程进行了热动力学分析。
YULi(于丽) +4 more
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Veterinary Dermatology, EarlyView.Background – Itch is a common symptom in skin disorders. While the neural pathways of itch transmission from the skin to the brain are well‐understood in rodents, the same pathways in dogs remain unclear. The knowledge gap hinders the development of effective treatments for canine itch‐related disorders.
Chie Tamamoto‐Mochizuki +1 more
wiley +1 more source
Anti-Ramsey numbers for three classes of special subgraphs in wheel graph(轮图中三类特殊子图的anti-Ramsey数)
Zhejiang Daxue xuebao. Lixue banA subgraph in an edge-colored graph is called rainbow, if all its edges have different colors. Given two graphs G and H, the anti-Ramsey number for H in G, denoted by ar(G,H), is the maximum number of colors in an edge-coloring of G such that G contains ...
覃忠美(QIN Zhongmei) +2 more
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草地图像边缘检测算法研究 Research on Edge Detection Algorithm of Grass Image
, 2017 本文针对草地图像边缘检测进行研究，传统的草地图像边缘检测算法，如canny算法，不仅边缘不够清晰，而且运算时间较长，不能达到智能机器人对实时性的要求。本文运用k-means算法对色彩进行分类进而选定绿色为目标色进行提取，再利用膨胀和腐蚀运算，选取合适的结构元素对图像进行填充和细化，通过实验对比其他传统边缘分割方法，探讨了数学形态学在割草机器人工作区域划分中的重要应用。实验证明，本文选用的边缘检测策略不仅能够清晰准确的识别出草地边缘，而且相比传统的边缘检测算子，运算更快，实用性更强。 This paper
刘卫光, 李洋, 杨关
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Detection of canine external ear canal lesions using artificial intelligence
Veterinary Dermatology, EarlyView.Background – Early and accurate diagnosis of otitis externa is crucial for correct management yet often can be challenging. Artificial intelligence (AI) is a valuable diagnostic tool in human medicine. Currently, no such tool is available in veterinary dermatology/otology.
Neoklis Apostolopoulos +3 more
wiley +1 more source