期刊文献+
共找到271篇文章
< 1 2 14 >
每页显示 20 50 100
The Integration and Practical Exploration of Information-based Teaching Methods in Vocational Education of Medical Laboratory Technology
1
作者 Murray Keshal 《Journal of Contemporary Educational Research》 2025年第8期26-31,共6页
Against the backdrop of the rapid intelligent development of medical laboratory technology,vocational education is in urgent need of teaching innovation.This paper explores the integration and practice of information-... Against the backdrop of the rapid intelligent development of medical laboratory technology,vocational education is in urgent need of teaching innovation.This paper explores the integration and practice of information-based teaching methods in vocational education of medical laboratory technology,analyzes the current situation of traditional teaching and the demand for informatization,and elaborates on the practical paths from aspects such as resource construction,model innovation,and evaluation reform.Practice has verified that this integration has improved teaching quality and students’skills,but there are problems such as uneven resources and the need to improve teachers’and students’abilities.Countermeasures such as strengthening co-construction and sharing of resources and carrying out special training are proposed to provide reference for the development of professional education. 展开更多
关键词 information-based teaching Medical laboratory technology Vocational education Teaching integration Practical exploration
在线阅读 下载PDF
Research on the Application of Information-Based Flipped Classroom Teaching Model in Nursing Education of Rheumatology and Immunology Department
2
作者 Yaqi Niu Xiaoyan Li +3 位作者 Ning Li Changjuan Li Na Li Hua Guo 《Journal of Contemporary Educational Research》 2025年第9期282-288,共7页
Objective:To explore the application effect of an information-based flipped classroom teaching model in nursing education of rheumatology and immunology,providing empirical evidence for optimizing specialized nursing ... Objective:To explore the application effect of an information-based flipped classroom teaching model in nursing education of rheumatology and immunology,providing empirical evidence for optimizing specialized nursing education models.Methods:Eighty nursing students from the 2021 grade of Xi’an Medical University were selected as research subjects and randomly divided into an experimental group(n=40)and a control group(n=40)using a random number table method.The control group received traditional lecture-based teaching,while the experimental group underwent information-based flipped classroom teaching.The theoretical knowledge scores and practical operation assessment scores of the two groups were compared after teaching,and the teaching satisfaction of the experimental group students was evaluated through a questionnaire survey.Results:The theoretical knowledge score(85.60±5.20)and practical operation score(88.30±4.70)of the experimental group were significantly higher than those of the control group(76.20±6.50)and(75.80±5.90),respectively.The differences were statistically significant(p<0.05).The satisfaction scores of all dimensions in the experimental group were significantly higher than those in the control group,and the differences were statistically significant(p<0.05).Conclusion:The information-based flipped classroom teaching model can effectively improve the quality of nursing teaching in rheumatology and immunology,enhance students’knowledge mastery and practical abilities,and is worthy of promotion and application in clinical nursing teaching. 展开更多
关键词 information-based teaching Flipped classroom Rheumatology and immunology Nursing education Teaching effectiveness
在线阅读 下载PDF
基于多特征与优化Census变换的立体匹配算法 被引量:1
3
作者 曾甲元 肖伸平 赵倩颖 《信息技术与信息化》 2025年第2期38-41,共4页
针对传统的Census变换过于依赖窗口中心像素,易受到噪声干扰,导致在纹理弱和视差不连续的区域匹配精度较低的现象,文章提出了一种基于多特征与优化Census变换的立体匹配算法。首先通过阈值优化Census变换的中心像素,降低传统Census对中... 针对传统的Census变换过于依赖窗口中心像素,易受到噪声干扰,导致在纹理弱和视差不连续的区域匹配精度较低的现象,文章提出了一种基于多特征与优化Census变换的立体匹配算法。首先通过阈值优化Census变换的中心像素,降低传统Census对中心像素的依赖,引入四方向梯度信息以取代单一匹配代价。利用自适应阈值十字交叉法对成本进行聚合。最后使用WTA技术计算视差,采用左右一致性检测与视差优化得到最终视差图。实验结果表明,在Middlebury数据集的测试中,所提算法的平均误匹配率为5.92%,相比传统Census算法降低了6.7%,与其他改进Census算法相比,具有较高的精度。 展开更多
关键词 立体匹配 机器视觉 census变换 梯度 十字交叉法
在线阅读 下载PDF
基于融合SAD与Census变换的SGM立体匹配算法
4
作者 邢跃 朱节中 +2 位作者 杨再强 姚成敏 张明杰 《软件工程》 2025年第5期49-53,共5页
针对传统Census变换在立体匹配中存在的局限性,即不能充分利用邻域窗口信息且过于依赖中心点像素,以及图像在受到噪声干扰时窗口中心值的改变将导致全局匹配精度降低的问题,提出了一种基于改进Census变换的半全局(Semi-Global Matching,... 针对传统Census变换在立体匹配中存在的局限性,即不能充分利用邻域窗口信息且过于依赖中心点像素,以及图像在受到噪声干扰时窗口中心值的改变将导致全局匹配精度降低的问题,提出了一种基于改进Census变换的半全局(Semi-Global Matching,SGM)立体匹配算法。首先,融合了绝对差值之和(SAD)算法与Census变换算法,并引入自适应窗口和噪声容限参数,以增强邻域窗口信息的相关性、减少对窗口中心点的依赖,并提升代价计算的可靠性;其次,采用八路径代价聚合与赢者通吃(WTA)算法获得初始视差;最后,利用加权最小二乘(WLS)滤波及剔除小连通区等方法,对初始视差图进行优化,得到最终的视差图。实验结果表明,本文所提出的立体匹配算法在全区域的平均误匹配率仅为8.02%,有效降低了误匹配率,显著提高了抗噪干扰性能。 展开更多
关键词 census变换 立体匹配 SAD 自适应窗口 噪声容限参数
在线阅读 下载PDF
Development of an Information-Based Leadership Evaluation Index System for School Management Teams:A Comprehensive Approach
5
作者 Wei Li Fang Liu 《Journal of Contemporary Educational Research》 2024年第4期35-40,共6页
In the context of educational informatization reform,there are many uncertain factors in the process of education development.To optimize the educational environment so that it can be effectively combined with informa... In the context of educational informatization reform,there are many uncertain factors in the process of education development.To optimize the educational environment so that it can be effectively combined with information technology,teachers need to change their teaching ideas,strengthen the school’s own adaptability to informatization,and promote the development of informatization construction in schools.As a branch of information leadership,the management team should establish an evaluation index system for information leadership in order to ensure the construction of school informatization,so as to provide a boost for the integration of school resources and information technology.Based on the overview and connotation of information-based leadership of the management team,this paper explores the construction of an evaluation index system of information-based leadership of the school management team,aiming to provide references for the research of relevant personnel in the future. 展开更多
关键词 School management team information-based leadership Evaluation index system
在线阅读 下载PDF
基于改进Census变换的双目视觉障碍物检测法探究
6
作者 黄建超 《广东水利电力职业技术学院学报》 2025年第3期71-74,共4页
随着机器人应用的日益广泛,障碍物检测至关重要。传统检测法存在成本高、环境适应性差等问题,现有研究虽在精度上取得突破,但仍存在判定条件单一、目标定位不完整、误检率较高等瓶颈。对此,提出一种基于改进Census变换的双目视觉障碍物... 随着机器人应用的日益广泛,障碍物检测至关重要。传统检测法存在成本高、环境适应性差等问题,现有研究虽在精度上取得突破,但仍存在判定条件单一、目标定位不完整、误检率较高等瓶颈。对此,提出一种基于改进Census变换的双目视觉障碍物检测法。该算法通过搭建双目平行系统并标定相机,改进Census变换计算视差图,并开发基于视差图的智能检测模型实现障碍物精准提取。结果表明,改进后的Census变换使视差图平均误匹配率降至4.56%,该算法显著提升了检测的准确性与可靠性,为机器人在复杂场景下的自主导航提供了有效方案。 展开更多
关键词 census变换 双目视觉 障碍物检测 机器人
在线阅读 下载PDF
基于改进Census变换的立体匹配算法
7
作者 李忠良 黄河源 +2 位作者 罗力 汤进东 陈星 《自动化应用》 2025年第16期1-4,共4页
在深度图像处理的研究领域,立体匹配技术长期面临深度不连续、遮挡、弱纹理区域及抗噪声等多重难题。特别是局部立体匹配算法在弱纹理区域的精度较低,且易受到噪声干扰。针对这一问题,提出了一种基于四状态Census变换的改进方法。同时,... 在深度图像处理的研究领域,立体匹配技术长期面临深度不连续、遮挡、弱纹理区域及抗噪声等多重难题。特别是局部立体匹配算法在弱纹理区域的精度较低,且易受到噪声干扰。针对这一问题,提出了一种基于四状态Census变换的改进方法。同时,将梯度信息与优化后的Census变换融合,设计了一种新的代价计算方法,从而提高了匹配精度并增强了抗噪声能力。在代价聚合阶段,引入了多种自适应窗口策略,根据每个窗口的特性设置相应的自适应阈值,从而优化了算法的灵活性与准确性。最后,在视差优化阶段,采用赢家通吃(WTA)算法对初步视差进行精细校正,确保最终视差图的高精度。通过在Middlebury测试平台上对标准立体图像数据集的实验验证,所提算法表现出优异的性能,平均误匹配率仅为5.05%。与传统算法相比,所提方法在匹配精度上实现了提升,并且在复杂环境下展现出了更强的稳健性。 展开更多
关键词 立体匹配 census变换 自适应聚合
在线阅读 下载PDF
改进Census变换与特征融合的立体匹配算法 被引量:3
8
作者 张释如 魏晓艳 《传感器与微系统》 CSCD 北大核心 2024年第2期130-133,共4页
针对局部立体匹配算法匹配精度较低问题,提出一种改进Census变换与特征融合的立体匹配算法。首先,使用变换窗口的邻域像素信息代替中心像素,解决传统Census变换过度依赖窗口中心像素问题;其次,引入图像的颜色信息与梯度信息构建融合代... 针对局部立体匹配算法匹配精度较低问题,提出一种改进Census变换与特征融合的立体匹配算法。首先,使用变换窗口的邻域像素信息代替中心像素,解决传统Census变换过度依赖窗口中心像素问题;其次,引入图像的颜色信息与梯度信息构建融合代价计算函数,提高初始匹配代价的可靠性;为建立邻域像素间联系,引入单向动态规划思想进行代价聚合;最后,提出一种基于八方向的视差空洞填充方法对视差图进行优化。实验结果表明:该算法在Middlebury数据集上的平均误匹配率为3.77%,优于其他改进Census变换方法,具有较高的匹配精度。 展开更多
关键词 双目视觉 立体匹配 census变换 特征融合 视差填充
在线阅读 下载PDF
基于特征优化的Census立体匹配方法 被引量:2
9
作者 游达章 周宏耀 张业鹏 《湖北工业大学学报》 2024年第1期41-45,共5页
针对传统Census立体匹配算法在弱纹理和边缘区域匹配精度较差的问题,提出一种基于特征信息优化的代价计算方法,在窗口中融入更多的差异信息以获得更精确的像素视差值。随后采用多方向路径独立的线扫描优化计算聚合代价以进一步提高匹配... 针对传统Census立体匹配算法在弱纹理和边缘区域匹配精度较差的问题,提出一种基于特征信息优化的代价计算方法,在窗口中融入更多的差异信息以获得更精确的像素视差值。随后采用多方向路径独立的线扫描优化计算聚合代价以进一步提高匹配精度。为获得更好的遮挡区域匹配效果,提出一种基于差异填充的视差优化方法,对遮挡像素进行识别和视差填充。为提高算法的效率,提出一种基于降采样策略的算法运行模式,通过缩小视差搜索范围以减少硬件负荷。最后以五组标准图像为输入进行改进Census算法性能检验,结果显示,平均误匹配率为6.12%,较改进前降低了2.45%,算法效率平均提升17.7%。 展开更多
关键词 立体匹配 census 特征信息优化 降采样策略
在线阅读 下载PDF
改进代价计算的AD-Census立体匹配算法 被引量:1
10
作者 胡璕 叶世榕 +1 位作者 余振宝 黄亮 《测绘地理信息》 CSCD 2024年第1期138-142,共5页
针对现有AD-Census代价计算时,Census变换依赖中心像素,对场景光照、亮度敏感的问题,提出一种基于子区域均匀度变换的改进代价计算方法。对Middlebury数据集在无幅度失真、不同亮度、不同光照场景下的代价计算以及立体匹配实验的统计结... 针对现有AD-Census代价计算时,Census变换依赖中心像素,对场景光照、亮度敏感的问题,提出一种基于子区域均匀度变换的改进代价计算方法。对Middlebury数据集在无幅度失真、不同亮度、不同光照场景下的代价计算以及立体匹配实验的统计结果表明,改进后的算法在非遮挡区以及所有区域的误匹配率均低于改进前,在代价计算环节,整体区域平均降低了5.80%,最终立体匹配后的视差图平均降低了1.55%。改进后的算法在不同亮度以及不同光照场景下对匹配的精度提升更加地显著,验证了改进算法的有效性。 展开更多
关键词 census变换 子区域均匀度 改进代价计算 立体匹配
原文传递
基于阈值和权重Census变换的煤矿井下图像立体匹配算法 被引量:5
11
作者 杨春雨 宋子儒 张鑫 《煤炭科学技术》 EI CAS CSCD 北大核心 2024年第6期216-225,共10页
双目图像立体匹配是实现煤矿井下无人辅助运输车自主避障和视觉侦察的关键技术,但煤矿井下高粉尘、光照条件不稳定等因素会导致视觉传感器采集到的图像产生椒盐噪声,使得立体匹配的误匹配率很高。为此,提出一种基于阈值和权重相结合Cen... 双目图像立体匹配是实现煤矿井下无人辅助运输车自主避障和视觉侦察的关键技术,但煤矿井下高粉尘、光照条件不稳定等因素会导致视觉传感器采集到的图像产生椒盐噪声,使得立体匹配的误匹配率很高。为此,提出一种基于阈值和权重相结合Census立体匹配算法,减少椒盐噪声对立体匹配影响。具体改进包括:①先对支持窗口内所有像素的灰度值进行阈值处理,去除支持窗口内灰度值极大和极小的像素点,解决异常值对加权融合的影响;②再将中心点对应的4条斜对角像素进行加权融合代替中心点像素,选择中心像素点4条斜对角线上的像素点,步长取1~3,根据对应的步长分别赋予0.7、0.2、0.1的权重,将这12个像素点中有效的像素点分别乘上对应权重,然后除以有效权重之和,得到经过加权处理后的中心像素点值,解决传统算法对Census变换窗口中心点依赖的问题,从而提高匹配精度。试验结果表明:基于阈值和权重Census代价计算全部区域的误匹配率相比传统Census算法降低了5.64%;相比基于均值Census算法降低了1.71%,且在不同噪声下全部区域的误匹配率相比传统Census算法降低了15.93%;相比基于均值Census算法降低了16.62%;而在非遮挡区域,算法的误匹配率相对于传统Census算法降低17.19%,相对于基于均值Census算法降低18.11%。所提出的基于阈值和权重相结合Census立体匹配算法有效的增强了抗噪声的鲁棒性,降低了误匹配率,提高了匹配精度。 展开更多
关键词 无人辅助运输车 双目视觉 census变换 椒盐噪声 立体匹配
在线阅读 下载PDF
Teaching Design of Tourism Management Based on Information-based Teaching Method:A Case Study of Selection of Hotel Construction Site
12
作者 Haiyang MA Lejun LI +2 位作者 Xiaomei LIU Weijun ZHAO Baoyi LOU 《Asian Agricultural Research》 2021年第12期55-61,共7页
Taking the knowledge points of hotel construction site selection as an example,this paper integrated the information-based teaching method with traditional classrooms.With the aid of virtual reality(VR)technology,the ... Taking the knowledge points of hotel construction site selection as an example,this paper integrated the information-based teaching method with traditional classrooms.With the aid of virtual reality(VR)technology,the information-based teaching can turn the abstract knowledge into vivid knowledge.Using the Rain Classroom platform,teachers can communicate with students in a better manner.Combined with the powerful spatial data analysis function of geographic information system(GIS)software,it is intended to provide new ideas and perspectives for the effective integration of traditional teaching classrooms and information technology,and effectively apply them to the practical teaching process. 展开更多
关键词 information-based teaching Hotel Management teaching INTEGRATION
在线阅读 下载PDF
Pricing Bermudan Option with Variable Transaction Costs under the Information-Based Model
13
作者 Matabel Odin Jane Akinyi Aduda Cyprian Ondieki Omari 《Open Journal of Statistics》 2022年第5期549-562,共14页
The Bermudan option pricing problem with variable transaction costs is considered for a risky asset whose price process is derived under the information-based model. The price is formulated as the value function of an... The Bermudan option pricing problem with variable transaction costs is considered for a risky asset whose price process is derived under the information-based model. The price is formulated as the value function of an optimal stopping problem, which is the value function of a stochastic control problem given by a non-linear second order partial differential equation. The theory of viscosity solutions is applied to solve the stochastic control problem such that the value function is also the solution of the corresponding Bellman equation. Under some regularity assumptions, the existence and uniqueness of the solution of the pricing equation are derived by the application of the Perron method and Banach Fixed Point theorem. 展开更多
关键词 Bermudan Option information-based Model Variable Costs Bellman Equation Viscosity Solutions
在线阅读 下载PDF
Study on the Application of Cloud Technology to Information-based Enterprise Management
14
作者 Yawen XU 《International Journal of Technology Management》 2015年第1期17-19,共3页
The innovation of enterprise management model and the improvement of efficiency are the impetuses to the internal development of enterprises. Computer information technology, with its advantages in low cost, high effi... The innovation of enterprise management model and the improvement of efficiency are the impetuses to the internal development of enterprises. Computer information technology, with its advantages in low cost, high efficiency and high quality, has been widely popularized and applied in the enterprise development. In this paper, the core competitiveness of enterprises in the information age and the far-reaching influence of a creative, sustainable growth on the development of enterprises are analyzed mainly from the information-based application in enterprise management and the influence of informatization and networking on enterprise management. 展开更多
关键词 Computer Technology information-based Enterprise Management
在线阅读 下载PDF
PARALLEL INFORMATION-BASED COMPLEXITY OF NUMERICAL INTEGRATION ON SOBOLEV CLASS W_q^s(Ω)
15
作者 Jiang Tianzi(Chinese Academy of Sciences,China) 《Analysis in Theory and Applications》 1996年第1期10-18,共9页
This paper deals with the parallel information-based complexity of numerical integration on Sobolev class. We obtain tight bounds on the complexity, considered as a function of two variables simultaneously:the number ... This paper deals with the parallel information-based complexity of numerical integration on Sobolev class. We obtain tight bounds on the complexity, considered as a function of two variables simultaneously:the number of processors, the rquired precision. This result seems to be new even in serial case. 展开更多
关键词 PARALLEL information-based COMPLEXITY OF NUMERICAL INTEGRATION ON SOBOLEV CLASS W_q~s
在线阅读 下载PDF
基于改进Census变换与分区域聚合的立体匹配
16
作者 胡鑫力 周锋 +3 位作者 郭乃宏 姚凯文 李楠 王如刚 《软件导刊》 2024年第4期164-170,共7页
立体匹配作为三维重建的关键步骤之一,针对基于Census变换的立体匹配算法在视差不连续区域以及弱纹理区域匹配精度较差,且易受光照不均与噪声干扰的问题,提出一种基于改进Census变换与分区域聚合的立体匹配算法。在Census变换阶段令窗... 立体匹配作为三维重建的关键步骤之一,针对基于Census变换的立体匹配算法在视差不连续区域以及弱纹理区域匹配精度较差,且易受光照不均与噪声干扰的问题,提出一种基于改进Census变换与分区域聚合的立体匹配算法。在Census变换阶段令窗口中所有像素点根据灰度值大小进行降序排序,选取灰度值为中位数的像素点替代窗口的中心像素;然后进行Hamming距离计算得到结果,再加权融合亮度或光照差的绝对值;接下来将代价聚合阶段的图像通过梯度大小划分为边缘和平滑区域,分别使用十字交叉域完成初始代价聚合;最终采用WTA找到初始视差值,经过一系列视差优化步骤获得最终视差图。在MiddleburyV3.0版本的测试平台上对该算法进行评测,实验结果表明,总体像素的视差平均误差为8.26%,相较于AD-Census算法下降了2.95%,具有较高的匹配精度,且对光照及噪声有较好的鲁棒性。 展开更多
关键词 机器视觉 立体匹配 census变换 分区域代价聚合 离群点检测
在线阅读 下载PDF
Integration of Information-based Teaching Resources in Higher Vocational Colleges and Construction of Application Evaluation Index System
17
作者 WANG Xiaofei 《外文科技期刊数据库(文摘版)教育科学》 2021年第2期234-238,共5页
The so-called evaluation index system refers to the establishment of an evaluation system based on the main characteristics of each aspect of the evaluation object and the related parameter indexes. In the process of ... The so-called evaluation index system refers to the establishment of an evaluation system based on the main characteristics of each aspect of the evaluation object and the related parameter indexes. In the process of higher vocational education, with the combination of online and offline education and the continuous expansion of online course resources, many online courses have achieved resource sharing. How to effectively integrate teaching resources and give full play to the main advantages of teaching resources has become the focus of higher vocational education. This paper focuses on the information-based teaching model of higher vocational education, and analyzes the integration of teaching resources and the evaluation content for reference only. 展开更多
关键词 higher vocational education information-based teaching INTEGRATION EVALUATION
在线阅读 下载PDF
The Integration and Application of Information-based Teaching and Secondary Vocational Music Class
18
作者 XUDongdong 《外文科技期刊数据库(文摘版)教育科学》 2022年第1期208-211,共4页
With the worldwide research and development of digital information technology, the world has entered the information age. All walks of life have undergone tremendous changes under the blessing of information technolog... With the worldwide research and development of digital information technology, the world has entered the information age. All walks of life have undergone tremendous changes under the blessing of information technology. Education is no exception. In an era when information technology is so developed, secondary vocational teachers need to keep up with the pace of the times and integrate information technology and music teaching, which can make the classroom full of interest, make teaching more intuitive and efficient, and improve students' enthusiasm to participate in teaching, so as to better promote the smooth achievement of teaching objectives. This paper mainly focuses on the music classroom of secondary vocational schools in China. While analyzing the role of music in secondary vocational schools, it discusses the significance and current situation of the integration of information-based teaching and music classroom of secondary vocational schools, and finally focuses on how to further integrate information-based teaching in music classroom of secondary vocational schools. 展开更多
关键词 information-based teaching secondary vocational music INTEGRATION status quo MEASURE
在线阅读 下载PDF
基于改进Census变换融合AD立体匹配算法研究 被引量:1
19
作者 孙延鹏 华政旭 《电脑与信息技术》 2024年第2期23-26,107,共5页
在立体匹配算法中,针对Census算法对于图像深度不连续、弱纹理区域匹配精度低、易受噪声干扰的问题,提出了一种改进Census变换结合自适应窗口的方法,利用梯度信息实现窗口的自适应选择,并将灰度绝对值计算(Absolute Difference,AD)和改... 在立体匹配算法中,针对Census算法对于图像深度不连续、弱纹理区域匹配精度低、易受噪声干扰的问题,提出了一种改进Census变换结合自适应窗口的方法,利用梯度信息实现窗口的自适应选择,并将灰度绝对值计算(Absolute Difference,AD)和改进后的Census变换相融合,提升了算法的精度和抗噪声能力,在代价聚合阶段,通过不同的自适应窗口提供不同的自适应阈值,最后通过赢家通吃的算法(WTA)进行视差优化,进而得到最终的视差图。利用该改进算法对Middlebury平台提供的标准图像进行实验表明改进后的算法误匹配率降低,并有很好的抗噪声能力。 展开更多
关键词 立体匹配 census变换 自适应窗口
在线阅读 下载PDF
上一页 1 2 14 下一页 到第
使用帮助 返回顶部