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1.
介绍了基于类定义的“室内设计ＣＡＤ系统”的主要设计思想玫系统的主要功能特点,论述了训采用面向对象设计思想和ＡＲＸ编程技术以及专业对象按类进行定义的方法和优点,该系统是ｕｔｏＣＡＤＲ１４开发平台和ＯｂｊｅｘｔＡＲＸ开发系统进行设计和开发的,因此具有ＣＡＤ的基本功能、室内设计功能（包括门设计、窗设计、墙设计、屋顶设计和楼梯设计等）和图库导航功能,该系统采用面向对象的分析设计方法,并利用ＡｕｔｏＣＡＤ核 相似文献
2.
陈莹 《数码设计:surface》2014,(5):60-62
文章通过对于视错觉的形成因素和在景观设计中与其相关的视错觉运用加以分析。总结出视错觉在景观设计中的运用类型、表达形式以及相应的作用。希望设计师在今后的景观设计中可以对于视错觉有更多的考量。 相似文献
3.
As manmade systems become increasingly complex and evolve into Systems of Systems of various kinds, a multitude of tasks needs to be performed in coordination throughout their development. In this paper, we briefly introduce a new modeling framework that was designed following systems engineering principles and based on extensive research of development efforts characteristics. We focus on the framework's ability to support the design of development processes while addressing Systems of Systems‐related challenges. We then describe a case study of using this framework to introduce a new capability into a large enterprise, which specializes in systems and System of Systems development. The example demonstrates the utility of using this framework for planning complex development efforts as well as improving the coordination of multiple development efforts in System of Systems development scenarios. 相似文献
4.
Software patterns are a new design paradigm used to solve problems that arise when developing software within a particular context. Patterns capture the static and dynamic structure and collaboration among the components in a software design. A key promise of the pattern‐based approach is that it may greatly simplify the construction of software systems out of building blocks and thus reuse experience and reduce cost. However, it also introduces significant problems in ensuring the integrity and reliability of these composed systems because of their complex software topologies, interactions and transactions. There is a need to capture these features as a contract through a formal model that allows us to analyze pattern‐based designs. In this paper, we provide an overview of a formal framework for ensuring the integrity of the compositions in object‐oriented designs by providing mathematically rigorous modeling and analysis techniques for object‐oriented systems comprising pattern‐based designs as the basic building blocks or design components. A case study related to a hypermedia Web‐based application has been presented to illustrate our approach in distributed systems. Copyright © 2005 John Wiley & Sons, Ltd. 相似文献
5.
This study introduces emotional feedback as a construct in an acceptance model. It explores the effect of emotional feedback on behavioral intention to use Computer Based Assessment (CBA). A female Embodied Conversational Agent (ECA) with empathetic encouragement behavior was displayed as emotional feedback. More specifically, this research aims at investigating the effect of Emotional Feedback on Behavioral Intention to Use a CBA system, Perceived Playfulness, Perceived Usefulness, Perceived Ease of Use, Content and Facilitating Conditions. An appropriate survey questionnaire was completed by 134 students. Results demonstrate that Emotional Feedback has a direct effect on Behavioral Intention to Use a CBA system and on other crucial determinants of Behavioral Intention. Finally, the proposed acceptance model for computer based assessment extended with the Emotional Feedback variable explains approximately 52% of the variance of Behavioral Intention. 相似文献
6.
The acceptance and use of computer based assessment 总被引：1，自引：0，他引：1
The effective development of a computer based assessment (CBA) depends on students’ acceptance. The purpose of this study is to build a model that demonstrates the constructs that affect students’ behavioral intention to use a CBA. The proposed model, Computer Based Assessment Acceptance Model (CBAAM) is based on previous models of technology acceptance such as Technology Acceptance Model (TAM), Theory of Planned Behavior (TPB), and the Unified Theory of Acceptance and Usage of Technology (UTAUT). Constructs from previous models were used such as Perceived Usefulness, Perceived Ease of Use, Computer Self Efficacy, Social Influence, Facilitating Conditions and Perceived Playfulness. Additionally, two new variables, Content and Goal Expectancy, were added to the proposed research model. Data were collected from 173 participants in an introductory informatics course using a survey questionnaire. Partial Least Squares (PLS) was used to test the measurement and the structural model. Results indicate that Perceived Ease of Use and Perceived Playfulness have a direct effect on CBA use. Perceived Usefulness, Computer Self Efficacy, Social Influence, Facilitating Conditions, Content and Goal Expectancy have only indirect effects. These eight variables explain approximately 50% of the variance of Behavioural Intention. 相似文献
7.
Model‐based design is a promising technique to improve the quality of software and the efficiency of the software development process. We are investigating how to efficiently model embedded software and its environment to verify the requirements for the system controlled by the software. The software environment consists of mechanical, electrical and other parts; modelling it involves learning how these parts work, deciding what is relevant to model and how to model it. It is not possible to fully automate these steps. There are general guidelines, but given that every modelling problem differs, much is left to the modeller's own preference, background and experience. Still, when the next generation of a system is designed, the new system will have common elements with its previous version. Therefore, lessons learned from the current model could inform future models. We propose a framework for identifying the non‐formal elements of knowledge, insights and a model itself, which can support modelling of the next system generation. We will present the application of our framework on an action research case – modelling mechanical parts of a paper‐inserting machine. 相似文献
8.
While large‐scale parallel/distributed simulations are rapidly becoming critical research modalities in academia and industry, their efficient and scalable implementations continue to present many challenges. A key challenge is that the dynamic and complex communication/coordination required by these applications (dependent on the state of the phenomenon being modeled) are determined by the specific numerical formulation, the domain decomposition and/or sub‐domain refinement algorithms used, etc. and are known only at runtime. This paper presents Seine, a dynamic geometry‐based shared‐space interaction framework for scientific applications. The framework provides the flexibility of shared‐space‐based models and supports extremely dynamic communication/coordination patterns, while still enabling scalable implementations. The design and prototype implementation of Seine are presented. Seine complements and can be used in conjunction with existing parallel programming systems such as MPI and OpenMP. An experimental evaluation using an adaptive multi‐block oil‐reservoir simulation is used to demonstrate the performance and scalability of applications using Seine. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
9.
Kazumasa Ozawa 《Pattern recognition》1978,10(4):237-242
Emphasis is placed on finding an example of the spatial filter being successful in simulating some of the well-known optical illusions. A modeling of the visual system has been made in the first stage of this work referring to the already surveyed spatial frequency responses of the human visual system and the other related characteristics. Design of the spatial filter has played a key role in the modeling stated here, because it mainly governs the performance of the proposed model used for simulating optical illusions.Four kinds of the famous illusion patterns have been tested to specify the spatial filter suitable for our simulation and successful examples of the simulated fields interpreting the illusions have been presented. 相似文献
10.
本文针对国际化背景下中国的地域性室内设计进行了分析和思考,从现存的社会现象出发,发现现代室内设计中存在的问题,借鉴优秀设计给我们的启示,论证我国发展现代室内设计的未来之路,并提出国际化背景下的中国室内设计发展应遵循的几个原则。 相似文献
11.
Dianne Cyr Milena Head Alex Ivanov 《International journal of human-computer studies》2009,67(10):850-869
Novel applications of website interactivity are important to attract and retain online users. In this empirical study five designs for interactivity are examined using different web-poll interfaces. The goal of the investigation is to examine perceived interactivity in a model which includes most commonly tested cognitive elements such as efficiency and effectiveness, but augments this model with the inclusion of a cognitive–affective element for trust, and an affective element of enjoyment. More specifically, a model is created to validate the relationship of perceived interactivity (comprised of user control, user connectedness, and responsiveness of the web-poll application) to efficiency, effectiveness, trust and enjoyment, of the website. In turn, efficiency, effectiveness, trust, and enjoyment are tested for their influence on user behavioral intentions for e-loyalty. All relationships in the model are supported. In addition, exploratory evaluation of qualitative comments is conducted to investigate additional insights between the five web-poll treatments in this investigation. The research confirms the complexity of a model in which cognitive, cognitive–affective and affective elements are present, and advances knowledge on the consequences of perceived interactivity. In additional to theoretical advancements, the research has merit for web designers and online marketers regarding how to enhance interactive online web applications. 相似文献
12.
Alexios Lekidis Emmanouela Stachtiari Panagiotis Katsaros Marius Bozga Christos K. Georgiadis 《Software》2018,48(6):1167-1194
The design of software for networked systems with nodes running an Internet of things operating system faces important challenges due to the heterogeneity of interacting things and the constraints stemming from the often limited amount of available resources. In this context, it is hard to build confidence that a design solution fulfills the application's requirements. This paper introduces a design flow for web service applications of the representational state transfer style that is based on a formal modeling language, the behaviour, interaction, priority (BIP) component framework. The proposed flow applies the principles of separation of concerns in a component‐based design process that supports the modular design and reuse of model artifacts. The BIP tools for state‐space exploration allow verifying qualitative properties for service responsiveness, ie, the timely handling of events. Moreover, essential quantitative properties are validated through statistical model checking of a stochastic BIP model. All properties are preserved in actual implementation by ensuring that the deployed code is consistent with the validated model. We illustrate the design of a representational state transfer sense‐compute‐control application for a Wireless Personal Area Network architecture with nodes running the Contiki operating system. The results validate qualitative and quantitative properties for the system and include the study of error behaviours. 相似文献
13.
Model‐Based Systems Design (MBSD) formalizes the application of system modeling. However, it is still difficult for designers to implement MBSD in practice. One of the challenges is to make the field of design more unified, as different MBSD methodologies focus on specific areas, and various designers from different areas use ambiguous terms. Moreover, the failure of some products originates in undiscovered couplings of functions in the design stage. Axiomatic Design (AD) provides a scientific foundation for system design. In order to reduce ambiguity and alleviate functional couplings, this paper integrates AD with the MBSD and proposes a unified systems design approach, called Axiomatic Model‐Based Systems Design (A‐MBSD). A‐MBSD uses four pillars: (a) the fundamental framework of AD; (b) the Independence Axiom; (c) a new behavior domain (BD); and (d) an A‐MBSD modeling profile. Finally, the design of a Forest Fire Satellite Monitoring and Control System demonstrates that the proposed approach can improve unity and alleviate the coupling of functions in a system design. 相似文献
14.
Franois Patou Maria Dimaki Anja Maier Winnie E. Svendsen Jan Madsen 《Systems Engineering》2019,22(2):98-113
Next‐generation genome sequencing machines and Point‐of‐Care (PoC) in vitro diagnostics devices are precursors of an emerging class of Cyber‐Physical Systems (CPS), one that harnesses biomolecular‐scale mechanisms to enable novel “wet‐technology” applications in medicine, biotechnology, and environmental science. Although many such applications exist, testifying the importance of innovative life‐sciences instrumentation, recent events have highlighted the difficulties that designing organizations face in their attempt to guarantee safety, reliability, and performance of this special class of CPS. New regulations and increasing competition pressure innovators to rethink their design and engineering practices, and to better address the above challenges. The pace of innovation will be determined by how organizations manage to ensure the satisfaction of aforementioned constraints while also streamlining product development, maintaining high cost‐efficiency and shortening time‐to‐market. Model‐Based Systems Engineering provides a valuable framework for addressing these challenges. In this paper, we demonstrate that existing and readily available model‐based development frameworks can be adopted early in the life‐sciences instrumentation design process. Such frameworks are specifically helpful in describing and characterizing CPS including elements of a biological nature both at the architectural and performance level. We present the SysML model of a smartphone‐based PoC diagnostics system designed for detecting a particular molecular marker. By modeling components and behaviors spanning across the biological, physical‐nonbiological, and computational domains, we were able to characterize the important systemic relations involved in the specification of our system's Limit of Detection. Our results illustrate the suitability of such an approach and call for further work toward formalisms enabling the formal verification of systems including biomolecular components. 相似文献
15.
吴嘉振 《数码设计:surface》2012,(8):91-93
光导纤维如今已广泛应用于现代社会的各个领域,它不但适用于通信、医学、传感器等科学应用领域,缤纷的都市空间更是展现光纤之美的重要舞台。本文主要介绍了西方发达国家在城市建筑照明、室内照明、景观与公共艺术照明等诸多城市空间领域光导纤维的应用情况,旨在为丰富我国的城市空间提供一些有益的参考,并由此倡导光纤照明这样一种绿色、安全、时尚的城市照明方式。进而为其将来更好地服务于现代社会,提升城市生活品质做好理论与实践两方面的充分准备。 相似文献
16.
A. Ravenscroft A. Schmidt J. Cook C. Bradley 《Journal of Computer Assisted Learning》2012,28(3):235-249
This paper presents an original approach to designing social media that support informal learning in the digital workplace. It adapts design‐based research to take into account the embeddedness of interactions within digitally mediated work‐based contexts. The approach is demonstrated through the design, implementation, and evaluation of software tools supporting a particular type of informal learning called knowledge maturing. The paper: introduces and presents the rationale for, and concept of, knowledge maturing; presents a new design methodology for developing social media that support informal learning and knowledge maturing; focuses on one prototype, for ‘people tagging for organisational development’, that was produced by the methodology (and concisely describes two others); presents the formative evaluation of the highlighted prototype; and finally, discusses the implications and insights arising from this work. 相似文献
17.
In many mechanical devices with chaotic behavior, stabilizing unstable periodic orbits (UPOs) of the system has positive effects in the lifetime and effectiveness of these devices. In this study, a new non‐parallel distributed compensation (non‐PDC) observer‐based tracking controller is presented for Takagi–Sugeno fuzzy systems to control the chaotic behavior of such systems. Asymptotic stability synthesis of the closed‐loop system is investigated using a fuzzy Lyapunov function to derive less conservative conditions than common quadratic Lyapunov function‐based approaches. To tackle the main drawback of the fuzzy Lyapunov‐based approaches, which assume some upper bounds on the derivatives of the fuzzy grade functions, we propose a new procedure by considering a constraint on the control signal. The new design conditions are given in the form of linear matrix inequalities (LMIs). The proposed control structure is applied to spinning disks in which chaos phenomena appear in lateral vibration. Simulation results are given to show the applicability of the proposed tracker to the UPO problem. 相似文献
18.
Bo Zhou Chong‐Hu Cheng Yong Cheng Xingzhi Wang Zixuan Wang Shanwen Hu 《国际射频与微波计算机辅助工程杂志》2016,26(3):232-239
Tuning space mapping (TSM) with tuning exponent parameter of T‐matrix is proposed. A section of design interest in the electromagnetic (EM) model is replaced by “n” pieces cascaded T‐matrixes, and each T‐matrix is the EM‐simulated T‐parameter of preassigned unit cell circuit (PUCC). Finally the optimal exponent parameter of T‐matrix is transferred to original design variables. The proposed TSM not only inherits the advantages of circuit tuning element‐less (CTEL) TSM in prior art but also overcome the number range limitation that the tuning parameter must be positive for tuning in CTEL TSM. The proposed method has the minimal specification error and lowest simulation time comparing with other TSM methods. Verification examples, comparisons and discussions are also implemented. © 2015 Wiley Periodicals, Inc. Int J RF and Microwave CAE 26:232–239, 2016. 相似文献
19.
在进行室内装修时,业主一般找专业的装修设计公司使用3D MAX等专业软件进行设计,或者自行使用室内装潢大师等商业软件进行设计。前者过于专业,一般人很难操作;后者则无法同步渲染输出,设计完后再渲染输出3D效果常会遇到失败。提出了一种3D室内装修设计软件,让操作者能够进行平面操作的同时,自动渲染输出3D效果,达到所见即所得的观感。平面操作采用SVG为基础实现,3D效果展示采用XNA实现。 相似文献
20.
Design patterns and architecture patterns have been considerably promoted by software engineering. The software oriented tools and methods have been adapted for systems engineering, conforming to the model driven engineering paradigm proposed by the Object Management Group. However, designers of complex sociotechnical systems have specific concerns, which differ from those of software designers. We propose a method of pattern implementation for systems engineering, based on a functional approach and relying on formal conceptual foundations in the form of a meta‐model, which can be used for the management, application, and cataloguing of patterns specific to the field of systems engineering. A pattern instance in the field of control systems is proposed as an example application: © 2012 Wiley Periodicals, Inc. Syst Eng 相似文献