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关键词： 农业科技   计算机视觉   关键词   词频分析  

摘要： [目的]计算机视觉技术被广泛应用于天文学、地质学、气象学、军事科学、医学、工农业生产等诸多领域,对我国农业科技及农业发展意义重大。[方法]以关键词词频分析为技术方法,筛选1993—2022年CNKI农业科技专辑中篇名含“计算机视觉”的文献,对获取的393条文献进行计量学分析,并综述国内30年来基于计算机视觉的农业科技研究成果、热点及发展态势。[结果]基于计算机视觉的农业科技研究高频关键词分布较为广泛,现有研究热点较多,研究领域、研究方法、研究技术等都在不断丰富和拓展。[结论]本研究可为后续农业科技方向的研究提供一定参考或借鉴,但还需不断探索基于计算机视觉的农业科技研究中的内在发展逻辑与深层理论关系。

关键词： pattern recognition and classification   mathematical logic   combinatorial analysis   machine learning applications  

摘要： The biennial "Computer Sciences and Information Technologies" conference in Yerevan in September of 2023 was the 14th in this series. This event is of regional interest, provide a networking ecosystem to scientists in areas such as the Mathematical Logic and Logical Reasoning, Discrete Mathematics, Pattern Recognition and Cognitive Sciences, and Applications. 17 selected papers of this conference, included in Special Issue of PRIA journal provide up to date research results and research topics that make a sensitive input to the field known as "Logic Combinatorial Pattern Recognition". Results from Algebra and Mathematical Logic help in structural and semantic areas of pattern recognition, graph theoretical investigations help with clustering and image analysis, other selected papers and results are devoted directly to semantic pattern recognition, to cognitive sciences in general, or they provide application platforms where different artificial intelligence technologies are converging.

关键词： Privacy   Computer crime   Computer security   Computer hacking   Trojan horses   Law enforcement   Computer science   Visualization   Social implications of technology   Online services  

摘要： Depictions of cybercrime use language often related to violence and war. Reality, for victims, offenders, and defenders, is often vastly different. We should not use terms of violence to describe cybercrimes, which are mostly low level, automated, and financially driven.

关键词： Generative AI   Business   Natural Language Processing   Chatbots   Oral Communication   Internet   Predictive Models   Context Modeling   Artificial Intelligence   Holography   Entrepreneurial   Computer Science   Inflection Point   Hologram   Holographic Images   Marshall Mc Luhan   Training Data   Object Object Object Object   Language Model   Transformer Model   Electronic Calculations Object Object   Sequence Of Words   Transformer Architecture   Chatbot  

摘要： Generative AI (GenAI) is the newest dimension of AI to catch the publics' attention. Some observers think this may be an inflection point on the road to general artificial intelligence. It's too soon to make judgments such as that, but it's not too soon to begin looking at the people who are developing it, not too soon to be seeking a basic understanding of the technology itself. This article will undertake a layman's look at how the technology works. Then it will highlight a technical leader and a business leader in these early days of GenAI.

摘要： Over the past 20 years, there has been a concentrated effort on expanding K-12 pathways, experiences, and access in computer science education (CSEd). Computer science (CS) is a multifaceted discipline within education, and the current emphasis in education policy has focused on how to expand access for K-12 students in CSEd that will lead to increased innovation and bring new participants into the United States labor economy. Industry partners have advocated for policies and incentives to increase pathways to CS opportunities. This chapter interrogates the side effects of CSEd and offers a framework for considering how side effects impact CS teaching and learning. We highlight the barriers that exist within CS and CSEd and how broadening participation in computing efforts could address longstanding equity and disparity issues.

摘要： We report a case of a 25-year-old male with a heterotaxy-like constellation of congenital heart defects consisting of complete atrioventricular septal defect, transposition of the great arteries, subpulmonary stenosis, L-looped ventricles, hypoplastic right ventricle, and a distant aorta arising from the right ventricle. This case demonstrates how 3D printing and interactive 3D visualization may facilitate a unique surgical repair.

关键词： Proteins   Social networking (online)   Image edge detection   Transforms   Australia   Toy manufacturing industry   Computer science   Graph algorithms   signed graphs   structural balanced cliques  

摘要： Signed graphs have been used to capture the polarity of relationships through positive/negative edge signs. In this paper, we consider balanced cliques - a clique is balanced if its vertex set C can be partitioned into C-L and C-R such that all negative edges are between C-L and C-R - and study the problems of maximum balanced clique computation and large balanced clique enumeration. Our main idea is a novel graph reduction that transforms a balanced clique problem over a signed graph G to problems over small subgraphs of G . Specifically, for each vertex u in G , we extract the subgraph G(u) of G induced by V-L boolean OR V-R;V-L is u and u 's positive neighbors while V-R is u 's negative neighbors. Then, we remove from G(u) all positive edges between V-L and V-R and all negative edges between vertices of the same set;denote the resulting graph of discarding edge signs as g(u) . We show that all balanced cliques containing u in G can be found by processing g(u) . Due to the small size and no edge signs, large cliques containing u in gu can be efficiently identified. Experimental results on real signed graphs demonstrated the advantages of our techniques.

关键词： Black raspberry volatiles   Blueberry volatiles   Blackberry volatiles   Intestinal inflammation   Intestinal barrier dysfunction   Caco-2/RAW264.7 cell co -culture  

摘要： Berry volatiles are responsible for the aroma of berries. However, their impacts on intestinal inflammation are unclear. Thus, this study investigated the effects of black raspberry, blueberry, and blackberry volatile extracts (BVEs) on intestinal barrier dysfunction and inflammation using a Caco-2/RAW264.7 cells co-culture model. BVE treatments significantly enhanced integrity and decreased permeability in LPS-damaged epithelial monolayers with increased tight junctions. Blueberry and blackberry volatile extract treatments significantly inhibited the LPS-induced overproduction of NO, IL-6, and TNF-alpha (p < 0.05). BVEs also suppressed the LPS-induced phosphorylation of p65, IKK alpha, and I kappa B alpha. These findings revealed that volatile extracts from black raspberries, blueberries, and blackberries improve intestinal barrier dysfunction by enhancing intestinal epithelial monolayer integrity and exhibit intestinal anti-inflammatory effects by suppressing pro-inflammatory mediator and cytokines through modulating NF-kappa B signaling pathway. It suggests that the three berry volatile extracts have the potential as functional food components with gastrointestinal protective effects with anti-inflammatory properties.

关键词： governors   executive elections   capital punishment   criminal justice   commutations  

摘要： We explore electoral explanations for U.S. governors' willingness to commute death sentences in their state. Across descriptive tests and pre-registered regression specifications, we find little evidence that election timing or term limits affect either the probability of commuting death sentences or the proportion of such sentences governors might commute. However, we do find evidence that governors are more likely to commute sentences - and commute sentences for a higher proportion of defendants - during the "lame duck" period after their successor's election but before their inauguration.

摘要： Rhizobia and arbuscular mycorrhizal fungi (AMF) are symbiotic microorganisms important for plants grown in nutrient-deficient and heavy metal-contaminated soils. However, it remains unclear how plants respond to the coupled stress by heavy metal and nitrogen (N) deficiency under co-inoculation. Here, we investigated the synergistic effect of Mesorhizobium huakuii QD9 and Funneliformis mosseae on the response of black locust (Robinia pseudoacacia L.) grown in sand culture to cadmium (Cd) under N deficiency conditions. The results showed that single inoculation of AMF improved the growth and Cd resistance of black locust, co-inoculation improved the most. Compared to non-inoculated controls, co-inoculation mediated higher biomass and antioxidant enzyme activity, reduced oxidative stress, and promoted nodulation, mycorrhizal colonization, photosynthetic capacity, and N, P, Fe and Mg acquisition when exposed to Cd. This increase was significantly higher under N deficiency compared to N sufficiency. In addition, the uptake of Cd by co-inoculated black locust roots increased, but Cd translocation to the above-ground decreased under both N deficiency and sufficiency. Thus, in the tripartite symbiotic system, not merely metabolic processes but also Cd uptake increased under N deficiency. However, enhanced Cd detoxification in the roots and reduced allocation to the shoot likely prevent Cd toxicity and rather stimulated growth under these conditions.