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Study on the Principle Model and Simplification of Subway Station Itemized Energy Consumption
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作者 Baoping Zeng Yonggang Li +1 位作者 Wanglong Jia Hengbo Luo 《Journal of World Architecture》 2023年第1期1-6,共6页
Owing to the constant modernization and urbanization of China,most cities have subways,and the total power consumption of subway stations has been rising,which contradicts with China’s green goals.In this regard,ener... Owing to the constant modernization and urbanization of China,most cities have subways,and the total power consumption of subway stations has been rising,which contradicts with China’s green goals.In this regard,energy consumption indicators for major energy use projects in subway stations should be established,comprehensive evaluation and detailed research on the current situation of subway operation should be conducted,and specific energy-saving measures should be taken from a diversified perspective.It is crucial to systematically sort out the principle of sub-item energy consumption in subway stations,and practice and explore the specific simplification measures of the principle model of sub-item energy consumption,so as to lay a solid foundation for achieving the goal of reducing energy consumption of subway stations. 展开更多
关键词 Subway station itemized energy consumption Principle model Simplified approach
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Beyond biology:How brain-computer interfaces redefine the trajectory of life
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作者 Zhao Xinhua 《China Textile》 2025年第2期22-23,共2页
In recent years,with the continuous advancement of technolo-gies such as artificial intelligence,neurobiology,and sensors,braincomputer interface(Bcl)technology has embraced opportunitiesfor rapid development The"... In recent years,with the continuous advancement of technolo-gies such as artificial intelligence,neurobiology,and sensors,braincomputer interface(Bcl)technology has embraced opportunitiesfor rapid development The"Guidelines for the Establishment ofNeurological Medical Service Price ltems(Trial)"recently issued bythe National Healthcare Security Administration specifically sets upseparate prospective items for new BCl technologies,which will un-doubtedly strongly facilitate the clinical application of BCl technologyas soon as possible,benefiting a broad range of patients. 展开更多
关键词 clinical application sensors brain computer interfaces artificial intelligenceneurobiologyand NEUROBIOLOGY neurological medical service artificial intelligence price items
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Valorization of Ubiquitous Plant Species Used as Food Packaging in Benin: A Sustainable Solution to Improve Quality of Life and Protect the Environment
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作者 Joli Prince Mintognissè Fossou Yann Christie Sissinto Adjovi +2 位作者 Ulrich Hilarion Ahéhéhinnou Frida Tovo Sèna Emmanuelle Dédéhou 《American Journal of Plant Sciences》 2025年第1期51-63,共13页
Vegetal leaves play a significant role in the daily lives of populations in developing countries. This study aimed to highlight the plant species used as food packaging in southern Benin. A survey questionnaire was ad... Vegetal leaves play a significant role in the daily lives of populations in developing countries. This study aimed to highlight the plant species used as food packaging in southern Benin. A survey questionnaire was administered in local markets, and informed consent was obtained from native guides. Data were processed using Google Forms, and a phytochemical screening was conducted on the sampled species. A total of 311 individuals, including elders, vendors, and consumers, participated in the survey. The most commonly used plant species identified were Tectona grandis, Thalia geniculata, Musa sapientum, Gmelina arborea, Manihot esculenta, and Terminalia catappa. Several reasons, primarily cultural, explain the preference for these species. Notably, Tectona grandis and Musa sapientum demonstrated superior morphological, physical, and organoleptic qualities, measuring 79 cm by 53.5 cm and over 2 m by 50 cm, respectively. They accounted for 33.33% and 32.35% of usage. Additionally, fermented corn paste, making up over 53% of offerings, was the most popular food item. The mechanical properties of these leaves, such as flexibility, toughness, and relative impermeability, along with identified phytochemicals like terpenes, alkaloids, gallic acid, flavonoids, and coumarins, enhance food preservation and limit microbial activity. Promoting the use of these natural packaging materials over plastic alternatives could significantly reduce environmental pollution and mitigate the risks associated with toxic microorganisms in food, contributing to both ecological health and food safety. 展开更多
关键词 Socio-Ethnobotanical Surveys Food Items Secondary Metabolites Bioactive Natural Substances Phytochemical Screening
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Delving into End-to-End Dual-View Prohibited Item Detection for Security Inspection System
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作者 Zihan Jia Bowen Ma Dongyue Chen 《Computers, Materials & Continua》 2025年第11期2873-2891,共19页
In real-world scenarios,dual-view X-ray machines have outnumbered single-view X-ray machines due to their ability to provide comprehensive internal information about the baggage,which is important for identifying proh... In real-world scenarios,dual-view X-ray machines have outnumbered single-view X-ray machines due to their ability to provide comprehensive internal information about the baggage,which is important for identifying prohibited items that are not visible in one view due to rotation or overlap.However,existing work still focuses mainly on single-view,and the limited dual-viewbasedwork only performs simple information fusion at the feature or decision level and lacks effective utilization of the complementary information hidden in dual view.To this end,this paper proposes an end-to-end dual-view prohibited item detection method,the core of which is an adaptive material-aware coordinate-aligned attention module(MACA)and an adaptive adjustment strategy(AAS).Specifically,we observe that in X-ray images,the material information of an object can be represented by color and texture features,and remains consistent across views,even under complex backgrounds.Therefore,our MACA first integrates the material information of the prohibited items in each view and then smoothly transfers these clearmaterial clues along the shared axis to the corresponding locations in the other view to enhance the feature representation of the blurred prohibited items in the other view.In addition,AAS can autonomously adjust the importance of the two views during feature learning to make joint optimizationmore stable and effective.Experiments on the DvXray dataset demonstrate that the proposed MACA and AAS can be plug-and-played into various detectors,such as Faster Region-based Convolutional Neural Network(Faster R-CNN)and Fully Convolutional One-Stage Object Detector(FCOS),and bring consistent performance gains.The entire framework performs favorably against state-of-the-art methods,especially on small-sized prohibited items,highlighting its potential application in reality. 展开更多
关键词 X-ray prohibited items object detection feature fusion attention mechanism deep learning
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Wuqiao Acrobatics
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《China Today》 2025年第8期80-80,共1页
WUQIAO County in Hebei Province is known as the acrobatics capital of China.In 2006,Wuqiao acrobatics was included in the first list of China's national intangible cultural heritage items.
关键词 intangible cultural heritage items Wuqiao Acrobatics China Intangible Cultural Heritage
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An effective short form of the 20-item University of California Los Angeles Loneliness Scale version 3:item response theory and network psychometrics
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作者 Jinyuan Liu Ming Chen +4 位作者 Hao Wu Hanchang Cai Shengjia Tu Ellen Lee Xinlian Zhang 《General Psychiatry》 2025年第4期328-334,共7页
Loneliness is a complex and usually unpleasant emotional response to isolation,which has been considered the latest global health epidemic exacerbated by the coronavirus disease 2019 pandemic,affecting nearly twothird... Loneliness is a complex and usually unpleasant emotional response to isolation,which has been considered the latest global health epidemic exacerbated by the coronavirus disease 2019 pandemic,affecting nearly twothirds of older adults.Some profound health implications carried by loneliness include depression,cognitive impairment,hypertension and frailty.Across the world,there is no consensus definition of loneliness,and its measure is based on the phenomenological perspective of the individual.The 20-item University of California Los Angeles Loneliness Scale version 3(UCLA-20)is the most common measure.This scale demonstrates acceptable psychometric properties but is too long and complex for a phone interview.This paper addresses the increasing need to shorten this scale by adopting classical item response theory and network psychometrics to advance scale development.Through an item reduction analysis,we trimmed the original scale into an effective short form,which is as valid as the original one.With respondents’time at a premium in most research nowadays,this shortform scale is an efficient and practical alternative to the original UCLA-20. 展开更多
关键词 coronavirus disease scale development ucla loneliness scale global health epidemic LONELINESS older adults network psychometrics item response theory
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Ultra-processed food,obesity,and colon cancer:A systematic review and meta-analysis
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作者 Justin Tin Henry Lee +1 位作者 Alfonso Gonzalez Trejo Kevin Tin 《World Journal of Gastrointestinal Oncology》 2025年第2期262-271,共10页
BACKGROUND Recently,there has been a significant increase in the consumption of ultraprocessed foods worldwide.However,the association between the consumption of ultra-processed food,obesity,and the prevalence of colo... BACKGROUND Recently,there has been a significant increase in the consumption of ultraprocessed foods worldwide.However,the association between the consumption of ultra-processed food,obesity,and the prevalence of colon cancer remains controversial.AIM To find out the association between the consumption of ultra-processed food,obesity,and the prevalence of colon cancer.METHODS A comprehensive systematic literature search of PubMed,Scopus,Web of Science,and Google Scholar for grey literature was done for articles published before 8th March 2023.The search was done to retrieve potential peer-reviewed articles that explored the association between the consumption of ultra-processed food,obesity,and the prevalence of colon cancer.RESULTS Of the 246 potential articles assessed,17 met the inclusion criteria.Meta-analysis results demonstrated that high consumption of ultra-processed food is associated with an increased risk of obesity[odds ratio(OR):1.65;95%CI:1.07-2.45;P<0.05].Consequently,there is a positive association between obesity and an increased risk of colon cancer(OR 1.48;95%CI:0.77-2.87;P>0.05).CONCLUSION Consuming ultra-processed foods increases the risk of obesity and colon cancer. 展开更多
关键词 Ultra-processed food Ultra-processed OBESITY Colon cancer Colorectal cancer Diet Oxidative stress Preferred Reporting Items for Systematic Review and Meta-Analysis Population intervention comparison primary outcomes study design
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基于云计算技术的个性化推荐系统 被引量:24
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作者 应毅 刘亚军 陈诚 《计算机工程与应用》 CSCD 北大核心 2015年第13期111-117,共7页
传统的协同过滤推荐技术在大数据环境下存在一定的不足。针对该问题,提出了一种基于云计算技术的个性化推荐方法:将大数据集和推荐计算分解到多台计算机上并行处理。在对经典Item CF算法Map Reduce化后,建立了一个基于Hadoop开源框架的... 传统的协同过滤推荐技术在大数据环境下存在一定的不足。针对该问题,提出了一种基于云计算技术的个性化推荐方法:将大数据集和推荐计算分解到多台计算机上并行处理。在对经典Item CF算法Map Reduce化后,建立了一个基于Hadoop开源框架的并行推荐引擎,并通过在已商用的英语训练平台上进行学习推荐工作验证了该系统的有效性。实验结果表明,在集群中使用云计算技术处理海量数据,可以大大提高推荐系统的可扩展性。 展开更多
关键词 推荐系统 基于物品的协同过滤 Map REDUCE ITEM CF-MR算法 学习资源推荐
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基于属性相似性的Item-based协同过滤算法 被引量:21
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作者 彭玉 程小平 《计算机工程与应用》 CSCD 北大核心 2007年第14期144-147,共4页
通过分析传统Item-based协同过滤推荐中的稀疏性问题以及新项目的冷开始问题,提出了一个基于属性相似性的Item-based协同过滤算法。该算法利用项目属性的相似性来修正原始相似性计算,综合考虑项目属性和用户评价对推荐的影响,改进了传... 通过分析传统Item-based协同过滤推荐中的稀疏性问题以及新项目的冷开始问题,提出了一个基于属性相似性的Item-based协同过滤算法。该算法利用项目属性的相似性来修正原始相似性计算,综合考虑项目属性和用户评价对推荐的影响,改进了传统相似性度量方法在评价数据稀疏和新项目推荐中测量结果不够准确的问题。 展开更多
关键词 Item—based协同过滤 项目属性 评价相似性 属性相似性
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基于遗传算法的聚类与协同过滤组合推荐算法 被引量:10
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作者 冯智明 苏一丹 +1 位作者 覃华 邓海 《计算机技术与发展》 2014年第1期35-38,共4页
使用协同过滤进行推荐,在处理大数据集时存在效率问题和推荐结果质量不高的问题。k均值聚类在处理大数据集时有着较好的性能。针对使用协同过滤进行推荐存在的问题,通过使用遗传算法将聚类和协同过滤组合起来进行项目推荐,以此来提高推... 使用协同过滤进行推荐,在处理大数据集时存在效率问题和推荐结果质量不高的问题。k均值聚类在处理大数据集时有着较好的性能。针对使用协同过滤进行推荐存在的问题,通过使用遗传算法将聚类和协同过滤组合起来进行项目推荐,以此来提高推荐算法的推荐效率和推荐质量,降低组合聚类和协同过滤进行推荐的复杂度。使用组合得到的算法在MovieLens数据集上做推荐对比实验,结果表明,相比单纯使用协同过滤进行推荐,使用基于遗传算法的聚类与协同过滤组合推荐算法进行项目推荐,能得到质量更好的推荐结果。 展开更多
关键词 遗传算法 K均值聚类 item—based协同过滤 项目推荐
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PEV:一种新的用于Item-Based协同过滤算法的相似性度量方法 被引量:5
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作者 张忠平 郭献丽 《小型微型计算机系统》 CSCD 北大核心 2009年第4期716-720,共5页
在Item-Based协同过滤算法中,项目之间相似性的度量是整个算法的关键.通过分析传统的相似性度量方法在系统评分数据稀疏的情况下所存在的弊端,提出一种新的用于Item-Based协同过滤算法的相似性度量方法,该方法从邻近度、影响力、有用性... 在Item-Based协同过滤算法中,项目之间相似性的度量是整个算法的关键.通过分析传统的相似性度量方法在系统评分数据稀疏的情况下所存在的弊端,提出一种新的用于Item-Based协同过滤算法的相似性度量方法,该方法从邻近度、影响力、有用性三个方面综合考虑了用户评分对项目相似性的影响.实验结果表明,该方法能够有效地避免传统相似性度量方法所存在的问题,使得数据稀疏性对最终推荐结果的负面影响变小,在一定程度上提高系统的推荐精度. 展开更多
关键词 推荐系统 Item—Based协同过滤 项目相似性 稀疏性
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计算机化自适应测验(CAT)的发展和前景展望(续) 被引量:7
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作者 张华华 程莹 《考试研究》 2005年第2期22-41,共20页
三、CAT中对的估计(一)MLE(极大似然估计法)假设一个能力水平为θ的被试对n道项目X<sub>1</sub>,X<sub>2</sub>,…,X<sub>n</sub>作答。θ的估计可以通过使(8)式所示的似然函数最大化的方式... 三、CAT中对的估计(一)MLE(极大似然估计法)假设一个能力水平为θ的被试对n道项目X<sub>1</sub>,X<sub>2</sub>,…,X<sub>n</sub>作答。θ的估计可以通过使(8)式所示的似然函数最大化的方式来得到。令(?)<sub>n</sub>为此时所得的θ估计。显然(?)<sub>n</sub>也是(9)式的极大似然估计。已知在一定的条件下,(?)<sub>n</sub>符合渐进正态,其均值为θ,方差近似为I<sup>-1</sup><sub>n</sub>((?)<sub>n</sub>)。目前的CAT设计大多通过递归方式在被试回答一个新的项目之后得到最新的θ估计,并根据信息最大化法抽取下一个项目。 展开更多
关键词 COMPUTERIZED adaptive testing(CAT) maximum information ITEM exposure ITEM BANK utilization UNDERESTIMATION ITEM pooling α-stratify
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基于SSI模型的综合查询系统的设计与实现 被引量:1
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作者 龙新征 欧阳荣彬 +2 位作者 王倩宜 李丽 刘云峰 《武汉大学学报(理学版)》 CAS CSCD 北大核心 2012年第S1期242-246,共5页
提出了一种SSI(subject set item)模型,用"数据主题"、"数据集"、"数据项"(Data Item)等数据结构来表征数据库中的数据表和数据字段,设计了一种可配置性、可扩展性和易管理性的综合查询算法,并实现了B/S... 提出了一种SSI(subject set item)模型,用"数据主题"、"数据集"、"数据项"(Data Item)等数据结构来表征数据库中的数据表和数据字段,设计了一种可配置性、可扩展性和易管理性的综合查询算法,并实现了B/S模式下基于Beehive+ExtJs+Json框架的综合查询系统. 展开更多
关键词 SSI(subject set item)模型 综合查询系统 数据主题 数据集 数据项
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INCREMENTAL AUGMENT ALGORITHM BASED ON REDUCED Q-MATRIX 被引量:2
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作者 杨淑群 丁树良 丁秋林 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2010年第2期183-189,共7页
Reduced Q-matrix (Qr matrix) plays an important role in the rule space model (RSM) and the attribute hierarchy method (AHM). Based on the attribute hierarchy, a valid/invalid item is defined. The judgment method... Reduced Q-matrix (Qr matrix) plays an important role in the rule space model (RSM) and the attribute hierarchy method (AHM). Based on the attribute hierarchy, a valid/invalid item is defined. The judgment method of the valid/invalid item is developed on the relation between reachability matrix and valid items. And valid items are explained from the perspective of graph theory. An incremental augment algorithm for constructing Qr matrix is proposed based on the idea of incremental forward regression, and its validity is theoretically considered. Results of empirical tests are given in order to compare the performance of the incremental augment algo-rithm and the Tatsuoka algorithm upon the running time. Empirical evidence shows that the algorithm outper-forms the Tatsuoka algorithm, and the analysis of the two algorithms also show linear growth with respect to the number of valid items. Mathematical models with 10 attributes are built for the two algorithms by the linear regression analysis. 展开更多
关键词 reduced Q-matrix(Qr matrix) valid items incremental augment algorithm linear regression
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上海23家民营医疗美容机构及其从业人员现况调查 被引量:2
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作者 江宁 黄绿斓 +4 位作者 唐毅 沈磊 任志华 吴寰宇 陈健 《中国卫生资源》 北大核心 2022年第5期618-621,共4页
目的 了解民营医疗美容机构医疗美容项目及医护人员配置和能力情况。方法 通过分层抽样抽取上海市5个区23家民营医疗美容机构,采用现场调查、个人访谈及调查表进行调查分析。结果 调查的医疗美容机构以医疗门诊部为主(73.91%),60%以上... 目的 了解民营医疗美容机构医疗美容项目及医护人员配置和能力情况。方法 通过分层抽样抽取上海市5个区23家民营医疗美容机构,采用现场调查、个人访谈及调查表进行调查分析。结果 调查的医疗美容机构以医疗门诊部为主(73.91%),60%以上经营时间在10年以内,60%以上设立在写字楼内或沿街商铺。项目以轻医疗美容为主,皮肤美容项目最多,占95.65%,其次是美容外科,占91.30%。美容间、手术室及苏醒室的平均周转速度分别为每间201.72人次/月、42.41人次/月及167.19人次/月。平均每家机构有专业医护人员40.08人、行政辅助人员21.52人。感染控制(以下简称“感控”)人员的均数为2.17人/家,专职比例为36.00%。感控继续教育中无菌操作、手卫生、安全注射等项目的培训参与率为95.45%、90.91%、68.18%。结论 民营医疗美容机构项目主要以轻医疗美容为主,感控能力建设不足,在硬件设置、人员配备和培训上仍需加强。 展开更多
关键词 医疗美容机构medical cosmetology institution 规模scale 经营年限operation time 科室设置department arrangement 医疗美容项目medical cosmetology item 从业人员practitioner 感染控制infection control
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基于改进的双极Slope One算法的农业信息推荐模型研究 被引量:1
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作者 张启宇 宋瑶 +1 位作者 陈英义 封文杰 《安徽农业科学》 CAS 2014年第29期10394-10396,共3页
为了在海量信息中为用户提供有价值的信息,个性化在线推荐系统是农业信息化综合服务平台的重要组成部分。Slope One算法因简单高效被许多在线推荐系统使用。对Slope One算法进行研究,并结合农业信息化综合服务平台的特点,提出了农业信... 为了在海量信息中为用户提供有价值的信息,个性化在线推荐系统是农业信息化综合服务平台的重要组成部分。Slope One算法因简单高效被许多在线推荐系统使用。对Slope One算法进行研究,并结合农业信息化综合服务平台的特点,提出了农业信息推荐模型。该模型按资源类别把用户评分矩阵划分为评分子矩阵,在此基础上采用杰卡德统一算子距离相似度算法建立用户类别近邻用户,采用改进的双极Slope One算法和Item user average算法相结合的方式对未访问资源进行评分预测,有效降低计算量,并提高了评分预测精度,既适合稠密数据集,又适合稀疏数据集。 展开更多
关键词 杰卡德统一算子距离相似度算法 双极Slope one算法 ITEM user average算法 农业信息 个性化推荐
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基于组合加权评分的Item-based协同过滤算法 被引量:5
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作者 马丽 《现代图书情报技术》 CSSCI 北大核心 2008年第11期60-64,共5页
针对Item-based协同过滤算法中用户评分数据稀疏性严重影响推荐质量的问题,提出一种基于组合加权评分的Item-based协同过滤算法,以用户评分项并集作为用户相似性计算基础,并提出一种组合加权评分方法来对并集中的未评分项进行计算和填补... 针对Item-based协同过滤算法中用户评分数据稀疏性严重影响推荐质量的问题,提出一种基于组合加权评分的Item-based协同过滤算法,以用户评分项并集作为用户相似性计算基础,并提出一种组合加权评分方法来对并集中的未评分项进行计算和填补,从而降低了数据稀疏性。实验结果表明该算法能有效提高推荐质量。 展开更多
关键词 数字图书馆 电子商务 Item—based协同过滤算法 组合加权评分
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Exif数据格式浅析及其读取应用 被引量:5
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作者 李杰 郝会民 +1 位作者 石瑜 段晓鹤 《城市勘测》 2016年第2期136-138,共3页
照片中镶嵌着丰富的Exif信息,从中可提取出拍摄位置与时间等实用数据服务于我们的工作与生活。本文分析了Exif数据格式,介绍了其读取方法,总结了Exif信息提取算法。结合具体实例,进行测试验证,对日常手机定位精度情况进行了评估。最后,... 照片中镶嵌着丰富的Exif信息,从中可提取出拍摄位置与时间等实用数据服务于我们的工作与生活。本文分析了Exif数据格式,介绍了其读取方法,总结了Exif信息提取算法。结合具体实例,进行测试验证,对日常手机定位精度情况进行了评估。最后,通过生产实践,验证Exif信息对于提高测绘与地理信息单位的作业效率与质量控制的促进作用,同时对应用前景进行了展望。 展开更多
关键词 图形文件 分析 EXIF PROPERTY Items 算法 测试 手机定位
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基于患者医疗服务成本追踪的病种成本核算与应用研究 被引量:3
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作者 曹瑾音 张萍 +1 位作者 张芷菁 廖宁 《医院管理论坛》 2020年第10期18-21,共4页
医疗服务成本核算已成为医院管理的巨大挑战,目前医院较多采用的是基于医疗项目成本叠加的病种成本核算,在实际操作中存在诸多问题和困难。为了寻求核算病种成本的新思路,本文探讨了基于患者个体的医疗服务成本核算理论与实践,给出该成... 医疗服务成本核算已成为医院管理的巨大挑战,目前医院较多采用的是基于医疗项目成本叠加的病种成本核算,在实际操作中存在诸多问题和困难。为了寻求核算病种成本的新思路,本文探讨了基于患者个体的医疗服务成本核算理论与实践,给出该成本核算的方式与结果分析,并针对这一方式进行了讨论。 展开更多
关键词 病种Diseases groups 成本核算Cost accounting 医疗项目成本Medical item cost
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