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Improving the design of visual programming language experiments using cognitive walkthroughs

JOURNAL OF visual languages AND COMPUTING 2002年第5期13卷 517-544页

作者： Ko, AJ Burnett, MM Green, TRG Rothermel, KJ Cook, CR Oregon State Univ Dept Comp Sci Corvallis OR 97331 USA Univ Leeds Comp Based Learning Unit Leeds LS2 9JT W Yorkshire England

visual programming languages aim to promote usability, but their usability is rarely examined scientifically. One reason is the difficulty of designing successful experimental evaluations. We propose the Cognitive Walkthrough (CW) as an aid to improve experiments' designs. The CW is an HCI technique designed for evaluating interfaces. The technique focuses on the potential difficulties of novice users and is therefore particularly suited for evaluating programming situations that arise in visual programming language experiments performed in laboratory settings. We first describe an empirical study performed without benefit of a walkthrough and show how the study was improved by a series of walkthroughs. We also describe two other empirical studies and how they were improved with the help of the CW. We found the method to be quick to use, effective at improving the experimental design, and usable by non-specialists. (C) 2002 Elsevier Science Ltd. All rights reserved.

关键词： visual programming CONTAMINATED WATER STORAGE empirical studies visual programming languages experimentation Language Automatic incident detection

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SWOWS and dynamic queries to build browsing applications on linked data

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JOURNAL OF visual languages AND COMPUTING 2014年第6期25卷 738-744页

作者： Bottoni, Paolo Ceriani, Miguel Univ Roma La Sapienza Dept Comp Sci Rome Italy

The linked data initiative is pushing dataset maintainers to publish data online in a highly reusable way through a set of open standards, such as RDF and SPARQL. The variety and amount of structured data available on the Web are increasing, but their consumption is still quite limited. In particular, applications that are used to explore linked data are usually generic linked data browsers or applications with hard-coded logic tailored for specific needs. SWOWS is a platform for declarative specification of applications consuming linked data. In this paper, we describe the use of the platform-for creating browsing applications tailored to specific contexts, and show how the declarative paradigm supports the development of flexible applications. To this end, the platform has been extended to support the dynamic generation of SPARQL queries. An example of a linked data browser created with the platform is given. (C) 2014 Elsevier Ltd. All rights reserved.

关键词： Linked data Semantic Web Declarative programming visual programming languages visual exploration SPARQL Semantic information retrieval Interactive applications

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PWCT: a novel general-purpose visual programming language in support of pervasive application development

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CCF TRANSACTIONS ON PERVASIVE COMPUTING AND INTERACTION 2020年第3期2卷 164-177页

作者： Fayed, Mahmoud S. Al-Qurishi, Muhammad Alamri, Atif Hossain, M. Anwar Al-Daraiseh, Ahmad A. King Saud Univ Coll Comp & Informat Sci Riyadh Saudi Arabia

visual programming languages (VPLs) are inevitable tools to attract more people to the programming world. In this article, a novel VPL-programming without coding technology (PWCT)-is introduced. The main objective behind developing this tool was to create a general-purpose VPL that also possesses textual languages' capabilities. PWCT is a language that can be used to develop similar programs to the ones developed in C++ or Java for example. As the name indicates, PWCT requires no coding at all. A person only needs to know the basic programming concepts to be able to use the tool. PWCT has many attractive features and can be used to develop applications of different domain including pervasive computing. PWCT has been launched as a Sourceforge project, which currently has more than 240 K downloads for the tool and over 22 M downloads for the samples and tutorials. A staggering number of programs were developed in PWCT all over the world. This article focuses on the core aspect of the tool. In addition, a number of studies are carried out to evaluate the usability and productivity of the tool. Feedback from developers and results from the studies indicate that PWCT is a very appealing, competitive, and powerful language that can be used in developing pervasive and mobile computing applications.

关键词： visual programming languages General-purpose programming No coding Pervasive computing

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Design and implementation of a remote lab for teaching programming and robotics

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IFAC-PapersOnLine 2016年第30期49卷 86-91页

作者： de Lima, João Paulo Cardoso Carlos, Lucas Mellos Schardosim Simão, José Pedro Pereira, Josiel Mafra, Paulo Manoel da Silva, Juarez Bento Federal University of Santa Catarina AraranguáSC Brazil

In this document we describe the development of a remote lab and two user interfaces for teaching programming and fundamentals of robotics using Arduino boards. One of the interfaces uses visual language to make the experience more attractive for those who are beginning their studies. The second interface provides an environment similar to the original Arduino's one for those users who have some background to use textual programming language. In addition, we present an usability evaluation of the application using visual programming language to obtain a broad feedback mainly in terms of target audience's acceptance and suggestions for improvements. The environment is still an ongoing work, but it is suitable for courses and workshops, especially for institutions with limited resources. © 2016

关键词： visual languages Ada (programming language) Computer programming Distance education Robot programming Robotics Teaching User interfaces visualization Arduino Design and implementations Educational robotics Remote laboratories Target audience Teaching programming Usability evaluation visual programming languages

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JOpera: A toolkit for efficient visual composition of web services

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INTERNATIONAL JOURNAL OF ELECTRONIC COMMERCE 2004年第2期9卷 107-141页

作者： Pautasso, C Alonso, G ETH Zurich Switzerland

Web services are attracting attention because of their ability to provide standard interfaces to heterogeneous distributed services. Standard interfaces make it possible to compose more complex services out of basic ones. This paper tackles the problem of visual service composition and the efficient and scalable execution of the resulting composite services. The effort revolves around the JOpera system, which combines a visual programming environment for Web services with a flexible execution engine that interacts with Web services through the simple object access protocol (SOAP), described with Web services language description (WSDL) and registered with a universal description discovery and integration (UDDI) registry. The paper explains the syntax and implementation of the JOpera visual Composition Language (JVCL) and its ability to provide different quality of service (QoS) levels in the execution of composite services.

关键词： JOpera scalable process execution visual programming languages Web service composition

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Modular reality: Analogues of patching in immersive space

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JOURNAL OF NEW MUSIC RESEARCH 2020年第1期49卷 8-23页

作者： Palumbo, Michael Zonta, Alexander Wakefield, Graham York Univ Alice Lab Sch Arts Media Performance & Design 4700 Keele St Toronto ON Canada

Despite decades of virtual reality (VR) research, current creative workflows remain far from VR founder Jaron Lanier's musically inspired dream of collaboratively 'improvising reality' from within. Drawing inspiration from modular synthesis as a distinctive musically immersed culture and practice, this article presents a new environment for visual programming within VR that supports live, fine-grained, multi-artist collaboration, through a new framework for operational transformations on graph structures. Although presently focused on audio synthesis, it is articulated as a first step along a path to synthesising worlds.

关键词： Virtual reality modular synthesis visual programming languages collaborative editing operational transforms

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Blink: An Educational Software Debugger for Scratch 2023

Blink: An Educational Software Debugger for Scratch

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28th Annual Conference on Innovation and Technology in Computer Science Education (ITiCSE)

作者： Strijbol, Niko Scholliers, Christophe Dawyndt, Peter Univ Ghent Ghent Belgium

ISBN: (纸本)9798400701399

Debugging is an important aspect of programming. Most programming languages have some features and tools to facilitate debugging. As the debugging process is also frustrating, it requires good scaffolding, in which a debugger can be a useful tool [3]. Scratch is a visual block-based programming language that is commonly used to teach programming to children, aged 10-14 [4]. It comes with its own integrated development environment (IDE), where children can edit and run their code. This IDE misses some of the tools that are available in traditional IDEs, such as a debugger. In response to this challenge, we developed Blink. Blink is a debugger for Scratch with the aim of being usable to the young audience that typically uses Scratch. We present the currently implemented features of the debugger, and the challenges we faced while implementing those, both from a user-experience standpoint and a technical standpoint.

关键词： programming education visual programming languages Scratch debugger

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Serious game development as a creative learning experience: lessons learnt 4

Serious game development as a creative learning experience: ...

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4th International Workshop on Games and Software Engineering

作者： Garneli, Varvara Giannakos, Michail N. Chorianopoulos, Konstantinos Jaccheri, Letizia Ionian Univ Corfu Greece Norwegian Univ Sci & Technol Trondheim Norway

ISBN: (纸本)9781467370462

Computer programming skills in younger ages seem to be a promising and challenging aspect. Many visual programming tools have been developed in order to assist young students and to improve the current teaching practices and pedagogies. In this paper, we explore the potential effects of a Project Based Learning (PjBL) approach in the field of computer programming. In particular, we try to identify potential differences on students' programming habits/styles, between game development, simulation, and traditional learning strategy;in the context of PjBL. Our sample consisted of 53 middle school students who formed three groups. Introducing programming through a serious game development approach might inspire students towards a creative learning experience. Moreover, parameters like the class formation might affect the development of programming skills. The students in the PjBL treatment were able to complete a project successfully making fewer mistakes. On the other hand, students enrolled in a more traditional top-down approach chose to experiment with more complex curriculum but not always successfully

关键词： Computer programming pedagogy project based learning visual programming languages CS in Schools educational context serious game development

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Toward Principles for the Design of Navigation Affordances in Code Editors: An Empirical Investigation 17

Toward Principles for the Design of Navigation Affordances i...

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ACM SIGCHI Conference on Human Factors in Computing Systems (CHI)

作者： Henley, Austin Z. Fleming, Scott D. Luong, Maria V. Univ Memphis Dept Comp Sci Memphis TN 38152 USA

ISBN: (纸本)9781450346559

Design principles are a key tool for creators of interactive systems;however, a cohesive set of principles has yet to emerge for the design of code editors. In this paper, we conducted a between-subjects empirical study comparing the navigation behaviors of 32 professional LabVIEW programmers using two different code-editor interfaces: the ubiquitous tabbed editor and the experimental Patchworks editor. Our analysis focused on how the programmers arranged and navigated among open information patches (i.e., code modules and program output). Key findings of our study included that Patchworks users made significantly fewer click actions per navigation, juxtaposed patches side by side significantly more, and exhibited significantly fewer navigation mistakes than tabbed-editor users. Based on these findings and more, we propose five general principles for the design of effective navigation affordances in code editors.

关键词： programming environments navigation design principles visual programming languages user study

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Program System for Solving Problems of Monitoring Social and Economic Development of Saint-Petersburg 5th

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5th Computer Science On-line Conference (CSOC)

作者： Korolev, Oleg Parfenov, Vladimir Potryasaev, Semyon Russian Acad Sci SPIIRAS St Petersburg Inst Informat & Automat St Petersburg Russia St Petersburg Natl Res Univ Informat Technol Mech St Petersburg Russia

ISBN: (纸本)9783319333892;9783319333878

One of the ways of modeling to be used is so called 'visual modeling'. In turn, there are many visual approaches, and only one of them is to apply algorithmic networks. The paper gives a short introduction of the algorithmic network approach and the Cognitron system is based on this approach. Further, the article describes the algorithmic model "Development Evaluation of the Information Society" and the corresponding algorithmic networks, created based on the method of development evaluation of the information society in Saint-Petersburg, developed in St. Petersburg Information and Analytical Center. The program system for working with the model is described, which consists of the Cognitron-Service program and the Cognitron system.

关键词： Decision-making support systems visual modeling visual programming languages Simulation Algorithmic networks Cognitron

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