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Context-Aware Workflow Modeling Approach Using OWL

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Context-Aware Workflow Modeling Approach Using OWL

第26届中国控制与决策会议

作者： Pengfei Wang huifang li Baihai Zhang Beijing Institute of Technology

Context-aware workflow systems can adapt their behavior based on the changes of real world, which is often gathered by a big amount of sensors. Thus, the modeling of context-aware workflow is the key issue in context-aware workflow systems, because context information is often varied and complex. To better describe context information in business processes, this paper proposes an OWL-based（Web Ontology Language） approach to model context-aware workflows. The context model and process model elements is defined based on OWL, so it can not only express the context information involved in business processes but also the corresponding workflow control items as OWL. The modeling rules which make the model more normalized are also designed. Case study and analysis show that our approach has good adaptability, and can be used to easily describe any sophisticated context-aware workflows.

关键词： Workflow Context-Aware Computing Workflow Model OWL

A QoS-based Scheduling Algorithm for Instance-intensive Workflows in Cloud Environment

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A QoS-based Scheduling Algorithm for Instance-intensive Work...

第26届中国控制与决策会议

作者： huifang li Siyuan Ge Lu Zhang Beijing Institute of Technology

Along with the rapid development of the Internet, especially the advent of cloud computing era, instanceintensive workflow applications will play an increasingly important role in people’s daily life. Most of the existing scheduling algorithms are designed just for a single complex workflow instance. This paper takes cloud workflow as a research background, completely generalizes and describes the instance-intensive workflow scheduling optimization problems based on QoS（Quality of Service） under the current architecture of cloud workflows. Then this paper classifies workflow tasks based on user’s QoS preference, and combines with staggered sub-deadlines allocation criteria, proposes a QDA scheduling algorithm suitable for instance-intensive workflows in cloud environment. Simulation results show that, compared to other algorithms, QDA algorithm can better meets the different requirements from users, and also has a much better load balancing rate.

关键词： Cloud workflows instance-intensive workflows workflow scheduling algorithm Quality of Service

Study of Manufacturing Cloud Service Matching Algorithm Based on OWL-S

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Study of Manufacturing Cloud Service Matching Algorithm Base...

第26届中国控制与决策会议

作者： huifang li Lu Zhang Rui Jiang Beijing Institute of Technology

Under the cloud manufacturing environment, with the increasing number of manufacturing cloud services, one of the issues needs to be resolved is to find a manufacturing cloud service that meets users’ demand. However, until now, there is not an outstanding manufacturing cloud discovery mechanism to help users to find the appropriate solution among numerous existing manufacturing cloud services. In order to realize manufacturing cloud services rapidly, efficiently and accurately match, a multi-level intelligent matching method was proposed in this paper. This method includes 3 parts:(1)a service describing model based on OWL(Ontology Web Language) aiming at the diversity dynamic characteristics of manufacturing cloud service, which includes base information, state function, QoS(Quality of Service);(2)the describing information is classified into 4 categories, word information, sentence information, number information and fuzzy information, and its corresponding similarity matching algorithms is given respectively;(3)based on the above similarity algorithms, a five-step manufacturing cloud service matching processes such as basic matching, state matching, functional matching, QoS matching and integrated matching, was proposed. Case study and analysis demonstrate that the proposed algorithm is more efficient and accurate than that of the existing ones.

关键词： Cloud manufacturing Service matching Ontology QoS and Fuzzy concept

16世纪英国的时间观念及其在荷尔拜因肖像画中的体现

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美术 2022年第10期 120-127页

作者：李会芳河北师范大学外语学院

中世纪后期的瘟疫、海外贸易、文艺复兴以及亨利八世的宗教改革等诸多元素重塑了英国人的时间观念。与中世纪长期流行的神圣时间崇拜相比,16世纪的英国人发展出一种新型的现代时间观念。作为英国权贵阶层的御用肖像画大师,荷尔拜因的肖... 详细信息

中世纪后期的瘟疫、海外贸易、文艺复兴以及亨利八世的宗教改革等诸多元素重塑了英国人的时间观念。与中世纪长期流行的神圣时间崇拜相比,16世纪的英国人发展出一种新型的现代时间观念。作为英国权贵阶层的御用肖像画大师,荷尔拜因的肖像画充分表达出这种时间观念的世俗化、物质化、理性化特征,集中体现了这个时期英国人对信仰、财富以及生死问题的态度。

关键词：时间观念荷尔拜因肖像画北方文艺复兴资本主义

跨文化展演与抵抗——《纯黄狂想曲》之“双语诗学”探微

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华文文学 2020年第4期 94-101页

作者：李卉芳贵州民族大学外国语学院

在诗集《纯黄狂想曲》(Rhapsody in Plain Yellow)中,华裔美国诗人陈美玲(Marilyn Chin)运用双语写作,如嵌入汉字,再现中国古诗意境及创作汉字视觉诗等,充分运用诗歌的形式美表达族裔诉求。通过超越国界的对话,诗人力图对抗居住国语言... 详细信息

在诗集《纯黄狂想曲》(Rhapsody in Plain Yellow)中,华裔美国诗人陈美玲(Marilyn Chin)运用双语写作,如嵌入汉字,再现中国古诗意境及创作汉字视觉诗等,充分运用诗歌的形式美表达族裔诉求。通过超越国界的对话,诗人力图对抗居住国语言文化之主导地位,反抗封建父权制权威,并在诗中构建一个"非亚""非美"的"双语家园",从而表明其独特之美学追求与文化选择,丰富了华裔美国诗歌之版图,拓展了亚裔美国文学之疆界。

关键词：华裔美国诗歌陈美玲《纯黄狂想曲》 “双语诗学”

Merging Several Business Process Variants

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Merging Several Business Process Variants

第26届中国控制与决策会议

作者： huifang li Harbi Mohamed El-Amine Hachou Mohamed Beijing Institute of Technology

In the last decade, modern sophisticated process-aware information systems have been taken place to provide a new possibility of process model configurations at build-time and enable process instance changes during runtime. However, this advantage has generated another challenge, which is the high price of configuration and maintenance of the big number of the derived process model variants(process variants for short). This paper proposes an algorithm that accepts as input a collection of process variants and generates a merged model. This algorithm has four main steps: determine the distinct blocks, common blocks, placeholders and finally construct the merged model. The merged model contains two types of blocks, common blocks and placeholders;the first block captures the commonalities of the process variants, and the second one captures the differences between them. In this way, the merged model is kept as small as possible. Furthermore, this merged model can subsumes the behaviors of all input models, ensures the trace back of each element from which input model is originated, and derives any of the input models from the merged model. Existing solutions either fail in respecting these requirements or allow only for merging pairs of process models. However, our algorithm allows for merging a collection of process variants at the same time.

关键词： Even-driven Process Chain merged process model business process variants.

Calculation of the stress intensity factors for elliptical cracks embedded in a weld under tensile loading Ⅱ: double cracks

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Calculation of the stress intensity factors for elliptical c...

2011 First International Conference on High Performance Structures and Materials Engineering (ICHPSM 2011)

作者： liu Xiaoyu Qian Caifu li huifang Zheng Hui College of Mechanical and Electrical Engineering Beijing University of Chemical Technology Chizhou Special Equipment Inspection Center China Special Equipment Inspection and Research Center

In this paper, double embedded elliptical cracks in a weld of pressure vessels under tension was taken into consideration, and stress intensity factors at the crack tip were calculated with the emphasis on the interaction between cracks. It is found that when the distance between the double embedded elliptical cracks is larger than the major semi-axis of the ellipse, influence between the cracks can be neglected. Unlike the single embedded crack, owing to the crack interactions, the point with maximum stress intensity factor is not always at the end of the minor axis of the ellipse, it may swift to the end of major axis, especially when the ellipse is close to a circle.

关键词： weld double embedded cracks stress intensity factor

Improving the response of 2D COFs to the surface doping strategies through rational design of their chemical structure

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Science China Materials 2024年第10期67卷 3272-3281页

作者： Xin Feng Xuefeng liang Xinxia li Zhou Fang Weiqiang Wei lisheng Zhang Yan He huifang li College of Electromechanical Engineering Shandong Engineering Laboratory for Preparation and Application of High-Performance Carbon-MaterialsQingdao University of Science&TechnologyQingdao 266061China

The chemical structure of covalent organic frameworks(COFs)plays a key role in their response to the surface doping strategy used for tuning their electronic character,but it is still not fully *** explore a rational design proposal for their chemical structure,the electronic properties of three n-doped typical COFs,including boroncontaining(COF-1),triazine-based(CTF),and C–C bondlinked(GCOF)COFs,were investigated theoretically in this *** expected,the chemical doping effects are different for these *** dispersion of the frontier bands,the nuclear-independent chemical shift(NICS)aromaticity index results,distribution of the electron localization function(ELF),and Hirshfeld charge population plots show that part of the transferred electron from dopants will be offset by the intralayer charge transfer of ***,chemical doping effects are more significant if the electron distribution in the COFs is more *** means the response of COFs to the surface doping strategy should be dominated by the conjugation degree of their chemical *** results prove that the intrinsic conjugation degree of COFs plays a key role in such doping functionalization strategies,which are expected to provide more useful information for the initial structure design of COF materials and facilitate their practical applications as active electronic transport materials in nanoscale devices.

关键词： COF monolayers adsorption doping strategy energy level alignment conjugation degree density functional theory

反腐倡廉：从政治自觉到文化自觉--改革开放30年来中国共产党廉政观念的演进

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浙江社会科学 2008年第6期 10-14页

作者：励慧芳中共宁波市委党校党委书记、常务副校长、副研究员宁波315012

改革开放30年来,我国的廉政建设不断深入:从着眼于党的建设到着眼于政治建设,再到着眼于人生荣辱的价值追求。与此相应,廉政观念也不断得到提升:从党性认同的自觉到政治认同的自觉,再到文化认同的自觉。当前我国反腐败斗争依然面临严峻... 详细信息

改革开放30年来,我国的廉政建设不断深入:从着眼于党的建设到着眼于政治建设,再到着眼于人生荣辱的价值追求。与此相应,廉政观念也不断得到提升:从党性认同的自觉到政治认同的自觉,再到文化认同的自觉。当前我国反腐败斗争依然面临严峻局面,我们要以十七大精神为指导,大力加强中国特色社会主义的廉政文化建设,站在文化自觉的高度大力推进反腐倡廉建设。

关键词：党的建设反腐倡廉廉政文化建设文化自觉