扩展MapObjects数据源的研究I:将Shapefiles保存到ADO.NET数据集

通过对MapObjects数据源和ADO.NET技术的研究,探讨了将Shapefiles文件导入到ADO.NET数据集中的方法。由于MapObjects不支持.NET的序列化技术,所以采用编程方式实现了几何对象与二进制数据流之间的双向转换,进而将Shapefiles中的空间数据保存到DataTable,并实现与属性数据的同步管理。这样,GIS数据组织变得简单高效,而且突破了ESRI空间数据只能单独存放的限制。

ADO在慢性阻塞性肺疾病患者近期预后评估中的价值

目的探讨呼吸困难指数气流受限程度指数(dyspnea index air flow restriction degree,ADO)在慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)患者近期预后评估中的价值。方法选取新疆医科大学第二附属医院呼吸内科自2021年3月—2023年3月的COPD患者120例,并依照患者最终转归情况将其分为存活组(n=95)与死亡组(n=25)。观察2组患者的基础病情况及患者性别、年龄、第1秒用力呼气容积(first second forced expiratory volume,FEV1)占预计值的百分比和ADO指数等相关指标。比较ADO指数不同分数患者病死率。比较ADO指数预测180 d死亡的受试者工作特征(receiver operating characteristic,ROC)曲线面积。结果2组患者的高血压、冠心病、心律失常、糖尿病、慢性肝病、慢性肾病、亚临床甲减发生情况对比,差异无统计学意义(P>0.05)。死亡组患者的FEV1占预计值的百分比、FEV1占预计值的百分比评分、呼吸困难分[英国医学研究委员会(the Medical Research Council,MRC)]评分以及ADO指数均高于存活组患者(P<0.05)。ADO指数<5分者的死亡率高于ADO指数≥5分者(P<0.05)。ADO指数预测180 d死亡的ROC曲线面积为0.851(95%CI:0.767~0.928,P<0.001),ADO指数为5.5时,约登指数最大,为0.565。结论ADO可有效反映COPD病情严重程度,对于患者而言可准确反映其病情进展情况,帮助其获得良好的疾病治疗效果,对于患者近期预后而言也具有积极意义,临床应用效果良好。

戏剧翻译中可表演性的重塑与再现——以Much Ado About Nothing译本为例

戏剧翻译缺乏系统性、层次性、逻辑性、操作性与全面性,亟须再次厘定明晰具体可行的翻译标准。基于此,以英国经典戏剧Much Ado About Nothing译本为例,针对戏剧译本进入目的语文化中受众域的多样性,辨析文本读者、舞台演员、表演观众、幕后人员对戏剧译本的语用期待,将可表演性原则细化为文学鉴赏性、表演呈现性、通俗简要性和舞台操作性四个标准。戏剧译介标准探析有助于经典戏剧在全球进行跨文化传播,可以为各国人民还原戏剧艺术的本真价值,也可以为戏剧翻译实践者提供借鉴与思考。

Cast shadow detection for moving objects based on binocular stereo vision

A novel cast shadow detection approach was proposed.A stereo vision system was used to capture images instead of traditional single camera.It was based on an assumption that cast shadows were on a special plane.The image obtained from one camera was inversely projected to the plane and then transformed to the view from another camera.The points on the plane shared the same position between original image and the transformed image.As a result,the cast shadows can be detected.In order to improve the efficiency of cast shadow detection and decrease computational complexity,the obvious object areas in CIELAB color space were removed and the potential shadow areas were obtained.Experimental results demonstrate that the proposed approach can detect cast shadows accurately even under various illuminations.

ArcObjects、ADO．NET数据访问探讨

一、ArcObjects、ADO.NET简介1.ArcObjects ArcObjects（简称AO）是ESRI公司ArcGIS的功能核心，是ArcMap、ArcCatalog等桌面程序的开发平台，它是基于COM（Component Object Model，对象组件模型）技术所构建的面向对象的地理数据模型的组件库，具有强大的GIS功能和制图功能，提供了ArcGIS中的全部功能，

A Simple and Effective Surface Defect Detection Method of Power Line Insulators for Difficult Small Objects

Insulator defect detection plays a vital role in maintaining the secure operation of power systems.To address the issues of the difficulty of detecting small objects and missing objects due to the small scale,variable scale,and fuzzy edge morphology of insulator defects,we construct an insulator dataset with 1600 samples containing flashovers and breakages.Then a simple and effective surface defect detection method of power line insulators for difficult small objects is proposed.Firstly,a high-resolution featuremap is introduced and a small object prediction layer is added so that the model can detect tiny objects.Secondly,a simplified adaptive spatial feature fusion(SASFF)module is introduced to perform cross-scale spatial fusion to improve adaptability to variable multi-scale features.Finally,we propose an enhanced deformable attention mechanism(EDAM)module.By integrating a gating activation function,the model is further inspired to learn a small number of critical sampling points near reference points.And the module can improve the perception of object morphology.The experimental results indicate that concerning the dataset of flashover and breakage defects,this method improves the performance of YOLOv5,YOLOv7,and YOLOv8.In practical application,it can simply and effectively improve the precision of power line insulator defect detection and reduce missing detection for difficult small objects.

A Novel Tensor Decomposition-Based Efficient Detector for Low-Altitude Aerial Objects With Knowledge Distillation Scheme

Unmanned aerial vehicles(UAVs) have gained significant attention in practical applications, especially the low-altitude aerial(LAA) object detection imposes stringent requirements on recognition accuracy and computational resources. In this paper, the LAA images-oriented tensor decomposition and knowledge distillation-based network(TDKD-Net) is proposed,where the TT-format TD(tensor decomposition) and equalweighted response-based KD(knowledge distillation) methods are designed to minimize redundant parameters while ensuring comparable performance. Moreover, some robust network structures are developed, including the small object detection head and the dual-domain attention mechanism, which enable the model to leverage the learned knowledge from small-scale targets and selectively focus on salient features. Considering the imbalance of bounding box regression samples and the inaccuracy of regression geometric factors, the focal and efficient IoU(intersection of union) loss with optimal transport assignment(F-EIoU-OTA)mechanism is proposed to improve the detection accuracy. The proposed TDKD-Net is comprehensively evaluated through extensive experiments, and the results have demonstrated the effectiveness and superiority of the developed methods in comparison to other advanced detection algorithms, which also present high generalization and strong robustness. As a resource-efficient precise network, the complex detection of small and occluded LAA objects is also well addressed by TDKD-Net, which provides useful insights on handling imbalanced issues and realizing domain adaptation.

Management of Penetrating Cranioencephalic Trauma Caused by Sharp Metal Objects—Therapeutic and Evolutionary Aspects: 12 Cases at the Renaissance University Hospital in N’Djamena

Introduction: Cranioencephalic trauma caused by bladed weapons is rare, and that caused by sharp objects is exceptional. The aim of our study was to describe the clinical, therapeutic and evolutionary aspects. Materials and method: This was a descriptive and analytical study over a 48-month period at CHU la Renaissance from January 1, 2018 to December 31, 2021, concerning patients admitted for penetrating cranioencephalic trauma by pointed object. Results: Twelve cases, all male, of penetrating cranioencephalic sharp-force trauma were identified. The mean age was 34 ± 7 years, with extremes of 11 and 60 years. Farmers and herders accounted for 31% and 25% of cases respectively. The average admission time was 47 hours. Brawls were the circumstances of occurrence in 81.2% of cases. Knives (33%), arrows (25%) and iron bars (16.6%) were the objects used. Altered consciousness was present in 43.8% of cases, and focal deficit in 50%. Scannographic lesions were fracture and/or embarrhment (12 cases), intra-parenchymal haematomas (6 cases) and presence of object in place (4 cases). Surgery was performed in 11 patients. Postoperative outcome was favorable in 9 patients. After 12 months, 2 patients were declared unfit. Conclusion: Penetrating head injuries caused by sharp objects are common in Chad. Urgent surgery can prevent disabling after-effects.

浅析使用WPF和ADO.NET技术实现主要畜禽监测调查数据的导入和审核功能

统计调查数据审核是保证统计数据质量的重要手段和关键环节。在主要畜禽监测调查工作中,存在数据量大、指标间逻辑关系复杂、审核时间短难度大等特点,给数据审核带来了一定困难。本文介绍基于WPF应用程序框架和ADO.NET数据库访问技术开发的一套速度快、功能强的数据审核程序,并从设计思路、基本原理及运行效果等方面介绍该数据审核程序的数据导入和审核功能。

基于蜘蛛猴优化的异构Hadoop任务调度算法

针对当前Hadoop在进行任务规划与调度的过程中存在的任务分配不均匀、资源利用率低等问题,考虑Hadoop集群中各节点之间的性能差异,提出一种基于蜘蛛猴优化的异构Hadoop调度算法。首先为了得到每个节点中的任务负载信息,采用集群心跳机制依次获取各节点的内存和CPU信息;然后采用蜘蛛猴优化算法机制构建与任务完成时间相关的目标函数,进而找到任务量与资源分配之间的最优映射关系;最后根据任务类型以及当前集群中个节点的资源利用率,结合最优映射关系完成对对新任务的分配和执行。实验结果表明,与现有的调度算法相比,提出的方法可有效减少任务执行时间、提高调度效率以及任务执行速度。

Patterns of Interactions of the Complex City System:Emotional Urban Objects as Triggering Agents-A Secondary Publication

This article presents an analysis of the patterns of interactions resulting from the positive and negative emotional events that occur in cities,considering them as complex systems.It explores,from the imaginaries,how certain urban objects can act as emotional agents and how these events affect the urban system as a whole.An adaptive complex systems perspective is used to analyze these patterns.The results show patterns in the processes and dynamics that occur in cities based on the objects that affect the emotions of the people who live there.These patterns depend on the characteristics of the emotional charge of urban objects,but they can be generalized in the following process:(1)immediate reaction by some individuals;(2)emotions are generated at the individual level which begins to generalize,permuting to a collective emotion;(3)a process of reflection is detonated in some individuals from the reading of collective emotions;(4)integration/significance in the community both at the individual and collective level,on the concepts,roles and/or functions that give rise to the process in the system.Therefore,it is clear that emotions play a significant role in the development of cities and these aspects should be considered in the design strategies of all kinds of projects for the city.Future extensions of this work could include a deeper analysis of specific emotional events in urban environments,as well as possible implications for urban policy and decision making.

基于ADO技术的数据库访问研究与实现

为了更好地、灵活地开发数据库应用软件,深入研究ADO的数据库访问机制,理解ADO数据库的连接方法、对数据的操作与访问以及ADO在数据访问中可能产生错误的处理方法,并利用Delphi语言对ADO数据库访问方法予以实现,体现了ADO的数据库访问机制在数据库应用领域中具有十分重要的意义。

用ADO构建LabView中的数据库访问接口

介绍了用ActiveX数据对象(ADO)在构建LabView中数据库访问接口方面的应用。通过比较几种LabView中的数据库访问接口的优缺点,详细说明了用ADO构建数据库访问接口的方法,并用此方法开发了一个实例。最后探讨了利用该接口在制造设备网络监控系统中的应用。

在LabVIEW环境下基于ADO技术和SQL语言的数据库系统实现

本文介绍了在LabVIEW环境下,如何利用ActiveX对象功能调用Microsoft ADO控件和SQL语言实现对数据库的访问,并给出了学生管理数据库系统的具体实现。通过实际测试,访问速度快,内存支出和占用磁盘空间较少,是一种理想的数据库实现方法。

基于ADO.NET的ASP.NET页面程序

为了证明ADO.NET是一个全新理念的版本,并不是为适应.NET基础构造而进行改进的版本的目的,对ADO和ADO.NET进行了比较分析。然后介绍了ADO.NET在.NET中进行数据访问、数据读取的方法,以及DataSet,DataTable,and Recordset在ADO.NET中的具体实现。实例给出了一个基于ADO.NET的显示可更新数据表的ASP.NET页面程序,结果表明使数据库的访问更加方便,在非连接数据处理和XML应用中效果显著。

ADO数据存取技术

本文介绍了Microsoft公司以ActiveX技术为基础的ADO数据存取技术,分析了ADO的工作原理及使用过程,并给出了一个Visual Basic中的ADO使用实例,说明了ADO数据访问技术在数据库编程中的具体实现方法。

基于ASP和ADO技术的动态交互式教学网站

该文介绍了如何应用ASP和ADO技术创建动态交互教学网站，网站内容可以实时更新，实现的功能包括BBS论坛、聊天室、公告板、教学资料下载中心、网上测试等。通过该网站，教师可以发布教学公告、布置／批改作业、答疑解惑，学生可以完成自学、和老师或其他学生讨论、下载教学资料，实现了教师和学生之间的互动式教学模式。

利用ADO技术实现对数据库的操纵

作为新型的数据库访问技术,介绍了ADO技术及其特点.利用ADO技术实现了对数据库的添加、删除、更新、查询等功能,并应用于专家系统中的知识库,从而可以不断地扩充知识库,体现了知识库的健壮性,并且有益于知识库维护的一致性和完整性,最后用Visual C++语言实现了编程。

ADO组件Stream对象在Web信息发布系统图片上传中的应用

基于ASP技术的文件上传/下载服务是目前Web网站实现客户端和服务器端交流信息的一种常用方式,它主要是通过FSO(FileSystemObject)对象实现的。FSO可以实现创建、复制或移动一个文件等基本操作,但它无法直接操作二进制文件,导致图片上传和维护不便。在"华中农业信息网"的管理实践中,借助于ADO的Stream对象设计了Web图片信息发布上传系统,获得了良好效果。对相关技术、设计思路进行了讨论,并给出了系统中的主要功能模块及关键代码。

基于ADO.NET的O/R Mapping中间件的研究

目前大多数软件开发都采用面向对象技术,而数据仍然保存在关系数据库中。由于对象模型和关系模型存在阻抗不匹配,因此实现对象与关系的映射已成为软件开发领域的关键问题。采用O/R M app ing(对象/关系映射)技术、XM L技术和软件分层的设计思想,实现了一个有效的数据库访问中间件,解决了利用ADO.NET开发应用程序遇到的数据表示和存取问题。