Results 81 to 90 of about 14,191 (165)

Research on Lightweight Road-Target-Recognition Algorithm in Complex Environment [PDF]

open access: yes
Road-target recognition is a core technology used in intelligent transportation systems to solve urban congestion problems. However, existing algorithms exhibit unsatisfactory recognition performance in complex traffic environments, with numerous missed ...
LI Zhenlu, HUANG Wei, SUN Kai
core   +1 more source

Implicit smartphone authentication via multimodal data and transfer autoencoders [PDF]

open access: yes
With the widely used of smartphones, traditional explicit authentication methods (e.g., passwords, fingerprints) are increasingly vulnerable due to their reliance on active user input, making the non-invasive implicit authentication a critical research ...
XU Zi’ang
core   +1 more source

同轴式两级圆柱齿轮减速器的优化设计

open access: yesJixie chuandong, 1998
本文针对同轴式两级圆柱齿轮减速器提出了以重量最轻 ,高速级和低速级间承载能力之差最小的优化设计方法 ,建立了优化设计数学模型 ...
王剑彬
doaj  

Detection Algorithm for Insulators and Foreign Objects on Transmission Lines Based on Unmanned Aerial Vehicle Inspection [PDF]

open access: yes
ObjectivesTraditional power grid inspection methods suffer from high labor intensity and low efficiency. Taking Shandong Golden Power Grid as the research object, this study proposes an inspection algorithm using unmanned aerial vehicle (UAV) based on ...
MENG Xiangzhong   +4 more
core   +1 more source

伊贝沙坦对糖尿病大鼠心脏的保护作用及抗氧化反应的机制探讨

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2007
【目的】探讨血管紧张素Ⅱ受体拮抗剂伊贝沙坦对糖尿病大鼠心脏的保护作用及其相关机制。【方法】将30只Wistar大鼠随机分为正常对照组、糖尿病组和伊贝沙坦组3组,每组10只。造模后12周终止实验处死大鼠,取血、尿和心脏标本,测定尿量、体质量、心脏质量/体质量、血糖、糖化血红蛋白(HbA1c);测定血液和心脏组织的丙二醛(MDA)和超氧化物歧化酶(SOD)的活性;通过电镜观察心肌超微结构的变化。【结果】12周终止实验时糖尿病各组大鼠的尿量、心脏质量/体质量、血糖、HbA1c ...
钱孝贤   +6 more
doaj  

A Lightweight Road Crack Detection Model Based on Improved YOLOv8n [PDF]

open access: yes
To address the challenges of road crack appearance characteristics being susceptible to environmental interference, high miss detection rate of fine cracks, and limited computational resources of inspection equipment, a lightweight detection model, MCA ...
LIU Yi, ZHANG Dengyin, ZHU Jiahui
core   +1 more source

慢性肝病与肝癌患者性激素水平变化的临床意义

open access: yesZhongguo shiyan zhenduanxue, 2008
目的探讨性激素变化与慢性肝病、肝癌发生发展的关系。方法应用放免分析法对128例慢性肝病(慢性肝炎92例、肝炎肝硬化23例、肝硬化并发肝癌13例血清中睾酮(T)、雌二醇(E2)和催乳素(PRL)等进行了测定。结果慢性肝炎重度、肝硬化、肝硬化并发肝癌各组血清T含量明显低于慢性肝炎轻度组及正常对照组(P0.05),但是,随着慢性肝炎向肝硬化、肝癌进展,慢性肝炎重度、肝硬化、肝硬化并发肝癌各组血清E2/T、E2/PRL水平明显高于慢性肝炎轻度组及正常对照组 ...
陈永胜   +5 more
doaj  

冷弯型钢研究专辑 序言

open access: yesJianzhu Gangjiegou Jinzhan, 2017
近年来,冷弯型钢在建筑结构领域中的应用范围不断扩大,特别是随着国家和各地方政府相继出台发展装配式钢结构、推进建筑工业化的相关政策后,冷弯型钢在冷成型生产、截面灵活高效、连接便捷等方面的一些优势得到重视目前,冷弯型钢除在传统的轻钢屋面和轻型墙面系统中大量使用外,在轻钢龙骨体系建筑、冷弯型钢门式刚架体系房屋、模块化轻钢体系建筑、多层和小高层装配化体系建筑等中应用前景广阔。现行行业标准 ...
李元齐, 徐厚军
doaj  

Pedestrian Detection Algorithm for Scenic Spots Based on Improved YOLOv8 [PDF]

open access: yes
The TAPDataset pedestrian detection dataset is used in this study to address the issues of low detection accuracy, large number of algorithm parameters, and limitations of existing public datasets for small target detection in current scenic pedestrian ...
Xiangquan GUI, Shiqing LIU, Li LI, Qingsong QIN, Tangyan LI
core   +1 more source

五联方案控制化疗病人呕吐的效果观察

open access: yesHuli yanjiu, 1999
化疗药物可抑制肿瘤生长,提高肿瘤病人的生存质量,延长病人生存期,但化疗药物副反应大,特别是呕吐已成为部分病人不能顺利完成治疗的最大障碍。减轻病人用药后的反应,是当前化疗中需解决的首要问题。我院自1993年1月以来,采用五联方案控制应用大剂量顺铂(每次...
谭庆霞, 刘芳艳, 黄浩
doaj  

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