.NET项目中利用LLBLGen实现O/R Mapping

该文介绍了在.NET中如何利用LLBLGen工具实现ORMAPPING(即生成持久层),并结合实例给出详细生成过程以及调用示例。

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。

工作流系统中角色管理的O/R Mapping策略研究

面向对象编程是当前软件开发的主要方法,而关系数据库在短期内有其不可替代的地位,因此,怎样实现对象模型到关系模型的映射就成了软件开发中一个重要的问题。本文结合一个工作流管理系统的开发过程,说明了O/RMapping(Object Relational Mapping)的映射策略及其在软件开发中的重要性。

Grove在O/R Mapping中的应用

本文论述了O/R Mapping的运行机制和在.NET应用程序开发中应用Grove工具如何实现O/R Mapping映射框架。

基于S-O-R模型的视觉营销对消费者购买意愿的影响研究——以红色文创网店为例

为提高红色文创网店的点击转化率,文章从消费者视角出发,研究影响消费者购买意愿的视觉因素。基于S-O-R模型理论,构建红色文创网店视觉营销对消费者购买意愿因素的理论模型。利用S-O-R模型分析了红色文创网店视觉营销中的商品形象、界面形象以及品牌视觉形象对顾客感知价值及顾客购买意向的影响。通过设计量表和调查问卷进行实证研究,并结合结构方程模型加以论证,得出品牌视觉形象和界面形象是影响消费者购买意愿的关键因素,为设计师和红色文创品牌进行网店设计提供了一定的理论参考和建议。

Weakly R-KKM mappings-intersection theorems and minimax inequalities in topological spaces

In this paper, we introduce the concepts of weakly R-KKM mappings, R-convex and ,R-β-quasiconvex in general topological spaces without any convex structure. Relating to these, we obtain an extension to general topological spaces of Fan's matching theorem, namely that Lemma 1.2 in this paper. On this basis, two intersection theorems are proved in topological spaces. By using intersection theorems, some minimax inequalities of Ky Fan type are also proved in topological spaces. Our results generalize and improve the corresponding results in the literature.

Feature Modeling and Variability Modeling Syntactic Notation Comparison and Mapping

Feature Model (FM) became an important role in Software Product Line Engineering (SPLE) field. Many approaches have been introduced since the original FM came up with Feature Oriented Domain Analysis (FODA) introduced by Kang in 1990. The main purpose of FM is used for commonality and variability analysis in domain engineering, to optimize the reusable aspect of software features or components. Cardinality-based Feature Model (CBFM) is one extension of original FM, which integrates several notations of other extensions. In CBFM, feature model defined as hierarchy of feature, with each of feature has a cardinality. The other notation to express variability within SPLE is Orthogonal Variability Model (OVM). At the other hand, OMG as standard organization makes an effort to build standard generic language to express the commonality and variability in SPL field, by initiate Common Variability Language (CVL). This paper reports the comparison and mapping of FODA, CBFM and OVM to CVL where need to be explored first to define meta model mapping of these several approaches. Furthermore, the comparison and mapping of those approaches are discussed in term of R3ST (read as “REST”) software feature model as the case study.

O／R Mapping思想与ADO．NET

微软公司一直没有提供O／R Mapping方面的支持，甚至是建议或者指导，但是这并不妨碍O／R Mapping技术在微软社区的大量的讨论。事实上，随着Hibernate这样的系统越来越成为J2EE方案的基础设施，再加上“企业级应用”、“架构”、“模式”等等时髦词汇的吸引，．NET开发者们也开始把注意力放到了这个重要的话题——O／R Mapping。

Common Fixed Point Theorem in Intuitionistic Fuzzy Metric Space Using <i>R</i>-Weakly Commuting Mappings

In this paper, we prove a common fixed point theorem in Intuitionistic fuzzy metric space by using pointwise R-weak commutativity and reciprocal continuity of mappings satisfying contractive conditions.

S-O-R理论框架下传统村落品牌“商品化”路径探析——以张谷英村为例

打造传统村落地方品牌并将其转化为实际效益,是实现乡村旅游活化的有效途径。基于S-O-R理论,构建研究理论框架,以湖南岳阳张谷英村为例,运用结构方程模型进行定量实证分析,结果表明:传统村落品牌“商品化”进程涵盖了品牌价值提升、文化价值延伸、经济效益转化三部分;传统村落地方品牌建构对游客消费行为起间接影响作用,地方依恋是沟通地方品牌建构与游客消费行为的“桥梁”,其中介效应得到了验证;为实现地方品牌价值向经济效益的有效转化,应当深度挖掘传统村落文化内涵,注重保护乡土景观,完善食宿消费服务体系,使单一产业转向多产业模式发展。

基于S-O-R理论的新型公共阅读空间用户流失行为分析——来自大众点评网用户评论

文章以大众点评网站中新型公共阅读空间的评论数据为对象,以S-O-R模型为理论基础,利用Python爬取其“中评”与“差评”的评论数据,运用内容分析法归纳得出新型公共阅读空间用户流失行为的主要因素,并构建新型公共阅读空间用户流失行为模型。在此基础上,提出提高新型公共阅读空间服务效能的相关建议,为提高新型阅读空间的服务质量,降低用户流失率提供参考。

An Approach for Automatically Generating R2RML-Based Direct Mapping from Relational Databases

For integrating relational databases (RDBs) into semantic web applications, the W3C RDB2RDF Working Group recommended two approaches, Direct Mapping (DM) and R2RML. The DM provides a set of mapping rules according to RDB schema, while the R2RML allows users to manually define mappings according to existing target ontology. The major problem to use R2RML is the effort for creating R2RML mapping documents manually. This may lead to appearance of many mistakes in the R2RML documents and requires domain experts. In this paper, we propose and implement an approach to generate an R2RML mapping documents automatically from RDB schema. The R2RML mapping reflects the behavior of the DM specification and allows any R2RML parser to generate a set of RDF triples from relational data.The input of generating approach is DBsInfo class that automatically generated from relational schema. An experimental prototype is developed and shows the effectiveness of our approach algorithms.

媒介接触下青年群体自主产品消费意愿的形成机理研究——基于S-O-R理论

培养青年群体自主产品消费意愿是实施扩大内需战略与深化供给侧结构性改革有机结合的有力抓手。基于S-O-R(刺激—有机体—反应)这一环境心理学理论,从“爱国情感”和“政府信任”两大路径出发构建媒介接触下的自主产品消费意愿模型,并将媒介细分为主流媒体和非主流媒体展开对比研究。基于结构方程模型的验证发现,主流媒体和社交媒体刺激了消费者的爱国情感和政府信任,最终影响自主产品消费意愿,且爱国情感路径下的作用更为突出。

磁共振R2*mapping示踪功能型纳米药物载体在NSCLC裸鼠模型的显像研究

目的通过磁共振R2*mapping技术示踪及动态监测NSCLC裸鼠模型给药后不同时间点R2*值的变化趋势,阐明R2*mapping在评价F/A-PLGA@DOX/SPIO纳米载药体系在肿瘤成像中的应用价值及影像学基础。方法成功构建NSCLC裸鼠移植瘤模型24只,随机分为G1、G2两组,每组12只。分别尾静脉注射单纯SPIO以及F/A-PLGA@DOX/SPIO纳米载药体系,并采用1.5 T MR和动物专用小鼠线圈对建模成功荷瘤裸鼠皮下移植瘤模型进行R2*扫描获得肿瘤区域R2*值。实验结束后全部肿瘤组织及肝脏、脾脏普鲁士蓝染色。结果G2组每个时间点的R2*值均高于G1组(P<0.05)。相对于G1组,G2组肿瘤R2*值在早期上升趋势明显,且在给药后60h时明显高于G1组(P<0.05)。G1组排泄期较G2组明显提前。普鲁士蓝染色结果显示,G2组肿瘤的蓝色铁沉积高于SPIO组,而肝脏、脾脏组织的蓝色铁沉积低于G1。结论R2*值与肿瘤组织内的SPIO含量存在较高敏感性,R2*mapping技术提供了一种SPIO的肿瘤示踪成像方法。

基于S-O-R理论的元宇宙图书馆阅读推广策略

基于S-O-R理论,本文构建了元宇宙环境下图书馆阅读推广的理论框架,并分析了元宇宙图书馆阅读推广的实现路径。元宇宙环境下,读者阅读活动具有媒介多元化、体验沉浸化等新特征,图书馆可通过虚拟现实等技术,刺激读者视觉、听觉、触觉、嗅觉和味觉等感官通道,唤醒读者的阅读兴趣。通过虚拟社交图谱发现、缘趣社区打造、虚拟交易社区营造等构建阅读有机体组织,再通过读者记忆存储与服务反应回馈,动态追踪读者阅读感知,调整推广策略。

Genetics,resistance mechanism,and breeding of powdery mildew resistance in cucumbers(Cucumis sativus L.)

Cucumber is an important vegetable worldwide,and powdery mildew(PM)is a common and serious disease of cucumbers.Breeding disease-resistant cucumber varieties is the most advantageous strategy to control this disease.In recent years,exploration and identification of cucumber PM resistance genes have achieved great advancement,and many genes have been cloned and verified using different methods.However,the resistance mechanism of cucumber PM is still unclear,and many ambiguities need to be elucidated urgently.In this review,we summarized the research advances in PM resistance in cucumbers,including genetic analysis,quantitative trait locus mapping,map-based cloning,transcriptomics,mlo-mediated PM resistance,and mining of noncoding RNAs involved in resistance.Finally,the research directions and the problems that need to be solved in the future were discussed.

On the criteria to create a susceptibility map to debris flow at a regional scale using Flow-R

Studies on susceptibility to debris flows at regional scale(100-1000 km^2) are important for the protection and management of mountain areas. To reach this objective, routing models, mainly based on land topography, can be used to predict susceptible areas rapidly while necessitating few input data. In this research, Flow-R model is implemented to create the susceptibility map for the debris flow of the Vizze Valley(BZ, North-Eastern Italy; 134 km^2). The analysis considers the model application at local scale for three sub-catchments and then it explores the model upscaling at the regional scale by verifying two methods to generate the source areas of debris-flow initiation. Using data of an extreme event occurred in the Vizze Valley(4 August 2012) and historical information, the modeling verification highlights that the propagation parameters are relatively simple to set in order to obtain correct runout distances. A double DTM filtering-using a threshold for the upslope contributing area(0.1 km^2) and a threshold for the terrain-slope angle(15°)-provides a satisfactory prediction of source areas and susceptibility map within the geological conditions of the Vizze Valley.

基于混合Logit模型的仙女山国家森林公园游客行为的影响因素研究

研究森林公园的游客行为特征及影响因素,有助于促进当地的旅游发展,推动经济可持续增长,为森林公园的高质量发展提供研究基础。以仙女山国家森林公园为例,通过实地调查获取游客的社会经济特征、态度量表及行为特征,运用S-O-R框架构建森林公园游客的行为特征分析框架,利用MIMIC模型拟合行为特征分析框架,引入混合Logit模型探索社会经济特征和态度变量对游客行为的影响。结果表明:(1)仙女山国家森林公园以市内游客为主,多以陪伴家人、休闲度假为主要动机。(2)研究证实了构建的行为分析框架对森林公园游客的行为具有解释效力。(3)各变量对旅游行为的影响依次为主体认知(-0.278)>主体选择(-0.160)>旅游地条件(0.204)>主体感受(0.373)。

GENERALIZED I-NONEXPANSIVE MAPS AND INVARIANT APPROXIMATION RESULTS IN p-NORMED SPACES

我们由于 Shahzad 扩大 R-subcommuting 地图的概念到盒子 ofnon-starshaped 域并且在标准 p 的空格的安装为地图 onnon-starshaped 领域的这个类获得普通的固定的点结果。作为应用，我们在 non-starshapeddomain 上建立概括 I-nonexpansive 地图的各种各样的最好的近似结果的 noncommutativeversions。我们的结果统一并且延长的 Al-Thagafi， Dotson， Habiniak， Jungck 和 Sessa， Latif， Sahab，中亚细亚和 Sessa 和 Shahzad。