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Displaying 1-50 out of 264 total
An Extensible Framework for Online Testing of Choreographed Services
Found in: Computer
By Midhat Ali,Francesco De Angelis,Daniele Fani,Antonia Bertolino,Guglielmo De Angelis,Andrea Polini
Issue Date:February 2014
pp. 23-29
Service choreographies present numerous engineering challenges, particularly with respect to testing activities, that traditional design-time approaches cannot properly address. A proposed online testing solution offers a powerful, extensible framework to ...
 
A Counter-Example Testing Approach for Orchestrated Services
Found in: Software Testing, Verification, and Validation, 2008 International Conference on
By Francesco de Angelis, Andrea Polini, Guglielmo de Angelis
Issue Date:April 2010
pp. 373-382
Service oriented computing is based on a typical combination of features such as very late binding, run-time integration of software elements owned and managed by third parties, run-time changes. These characteristics generally make difficult both static a...
 
Practical intelligence in IT: assessing soft skills of IT professionals
Found in: Communications of the ACM
By Damien Joseph, Roger H. L. Chang, Roger H. L. Chang, Sandra A. Slaughter, Sandra A. Slaughter, Soon Ang, Soon Ang
Issue Date:February 2010
pp. 149-154
Introduction What qualities make a successful it professional? Certainty strong technical skills are sine qua non. As a result, the technology geek remains the stereotype of an information technology (IT) professional. Indeed, when companies hire IT profes...
     
Towards a theory of user judgment of aesthetics and user interface quality
Found in: ACM Transactions on Computer-Human Interaction (TOCHI)
By Alistair Sutcliffe, Antonella De Angeli, Antonella De Angeli, Jan Hartmann, Jan Hartmann
Issue Date:November 2008
pp. 1-30
The article introduces a framework for users' design quality judgments based on Adaptive Decision Making theory. The framework describes judgment on quality attributes (usability, content/functionality, aesthetics, customisation and engagement) with depend...
     
Experimental Performance Modeling of MANET Interconnectivity
Found in: Parallel and Distributed Systems, International Conference on
By Zhi-Ang Ang EU, Winston Khoon-Guan SEAH, Kean-Soon TAN
Issue Date:July 2005
pp. 155-161
<p>The proliferation of mobile wireless computing devices and the increasing usage of wireless networking have motivated substantial research in mobile ad hoc networks (MANETs). In addition, much has also been done to link autonomous MANETs to the In...
 
An Embedded Solution to Visual Mapping for Consumer Drones
Found in: 2014 IEEE Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
By Guyue Zhou,Ang Liu,Kang Yang,Tao Wang,Zexiang Li
Issue Date:June 2014
pp. 670-675
In this paper, we propose a real-time visual mapping scheme which can be implemented on a low-cost embedded system for consumer-level ratio control (RC) drones. In our work, a 3-dimensional occupancy grid map is obtained based on an estimated trajectory fr...
 
Two-Level Scheduling Framework with Frame Level Scheduling and Exponential Rule in Wireless Network
Found in: 2014 International Conference on Information Science and Applications (ICISA)
By Ee Mae Ang,Kuok Kwee Wee,Ying Han Pang,Siong Hoe Lau
Issue Date:May 2014
pp. 1-4
Based on the ongoing development in the Long Term Evolution (LTE), it was brought in to satisfy user's needs and demands on the enhancement of the wireless network's Quality of Service, especially for real-time applications. Real-time applications require ...
   
Classification in P2P networks with cascade support vector machines
Found in: ACM Transactions on Knowledge Discovery from Data (TKDD)
By Hock Hee Ang, Steven C. H. Hoi, Vivekanand Gopalkrishnan, Wee Keong Ng
Issue Date:November 2013
pp. 1-29
Classification in Peer-to-Peer (P2P) networks is important to many real applications, such as distributed intrusion detection, distributed recommendation systems, and distributed antispam detection. However, it is very challenging to perform classification...
     
Predicting Big Five Personality Traits of Microblog Users
Found in: 2013 IEEE/WIC/ACM International Joint Conferences on Web Intelligence (WI) and Intelligent Agent Technologies (IAT)
By Shuotian Bai,Bibo Hao,Ang Li,Sha Yuan,Rui Gao,Tingshao Zhu
Issue Date:November 2013
pp. 501-508
Personality can be defined as a set of characteristics which makes a person unique. The study of personality is of central importance in psychology. Conventional personality assessment is performed by self-report inventory, which costs much manual efforts ...
 
Single Test Clock with Programmable Clock Enable Constraints for Multi-clock Domain SoC ATPG Testing
Found in: 2013 22nd Asian Test Symposium (ATS)
By Chin Hai Ang
Issue Date:November 2013
pp. 195-200
This paper proposes a method to enable single test clock in testing multi-clock domain design. Clock gating DFT is added to allow selecting clocking per clock domain basis. Selecting clocking scheme is further controlled by analyzing independent and synchr...
 
Improving user profile with personality traits predicted from social media content
Found in: Proceedings of the 7th ACM conference on Recommender systems (RecSys '13)
By Ang Li, Bibo Hao, Lin Li, Rui Gao, Shuotian Bai, Tingshao Zhu
Issue Date:October 2013
pp. 355-358
Existing studies indicate that there exists strong correlation between personality and personal preference, thus personality could potentially be used to build more personalized recommender system. Personality traits are mainly measured by psychological qu...
     
PacketCloud: an open platform for elastic in-network services
Found in: Proceedings of the eighth ACM international workshop on Mobility in the evolving internet architecture (MobiArch '13)
By Ang Li, Bingyang Liu, Jun Bi, Xiaowei Yang, Yang Chen, Yu Chen
Issue Date:October 2013
pp. 17-22
The Internet was designed with the end-to-end principle where the network layer provided merely the best-effort forwarding service. This design makes it challenging to add new services to the network layer. However, as the Internet connectivity becomes a c...
     
Predictive Handling of Asynchronous Concept Drifts in Distributed Environments
Found in: IEEE Transactions on Knowledge and Data Engineering
By Hock Hee Ang,Vivekanand Gopalkrishnan,Indre Zliobaite,Mykola Pechenizkiy,Steven C.H. Hoi
Issue Date:October 2013
pp. 2343-2355
In a distributed computing environment, peers collaboratively learn to classify concepts of interest from each other. When external changes happen and their concepts drift, the peers should adapt to avoid increase in misclassification errors. The problem o...
 
Using Ensembles for Web Effort Estimation
Found in: 2013 ACM/IEEE International Symposium on Empirical Software Engineering and Measurement (ESEM)
By Damir Azhar,Patricia Riddle,Emilia Mendes,Nikolaos Mittas,Lefteris Angelis
Issue Date:October 2013
pp. 173-182
Background: Despite the number of Web effort estimation techniques investigated, there is no consensus as to which technique produces the most accurate estimates, an issue shared by effort estimation in the general software estimation domain. A previous st...
 
Secure Channel Service for MANETs
Found in: 2013 IEEE Conference on Self-Adaptive and Self-Organizing Systems Workshops (SASOW)
By Francesco de Angelis,Jose Luis Fernandez-Marquez,Giovanna Di Marzo Serugendo
Issue Date:September 2013
pp. 9-10
This paper shows how to use a well defined set of self-organizing services for establishing and preserving a confidential and adaptive channel between two communicating entities on top of an ad-hoc mobile network.
 
Touching dante: a proximity-based paradigm for tabletop browsing
Found in: Proceedings of the Biannual Conference of the Italian Chapter of SIGCHI (CHItaly '13)
By Antonella De Angeli, Massimo Zancanaro, Silvia Bordin
Issue Date:September 2013
pp. 1-10
We present the design of a proximity-based interaction paradigm for browsing complex information. This paradigm builds on the intrinsic characteristics of interactive tabletops, namely their physical spatial dimension, direct-touch input modality and affor...
     
Requirements and architecture design principles for a smart city experiment with sensor and social networks integration
Found in: Proceedings of the 17th Panhellenic Conference on Informatics (PCI '13)
By Athena Vakali, Christos Samaras, Despoina Chatzakou, Lefteris Angelis, Maria Giatsoglou
Issue Date:September 2013
pp. 327-334
Smart city infrastructures offer unique testbeds ground for innovative experimentation and services offering. Sensors networks in cities with integrated social networks activities can improve people-centric services, while improving infrastructures setting...
     
WIVSS: a new methodology for scoring information systems vulnerabilities
Found in: Proceedings of the 17th Panhellenic Conference on Informatics (PCI '13)
By Angeliki Sioziou, Georgios Spanos, Lefteris Angelis
Issue Date:September 2013
pp. 83-90
Vulnerabilities of information systems constitute an ever-increasing problem that IT security management must solve. As the number of vulnerabilities is growing exponentially, their ranking and prioritization is a crucial task for organizations and researc...
     
Exploring the Use of Internet Media for Healthcare and Cancer Awareness
Found in: 2013 International Conference on Informatics and Creative Multimedia (ICICM)
By Ang Kok Yew,Koo Ah Choo,Tengku Putri Norishah
Issue Date:September 2013
pp. 17-21
This paper seeks to explore the use of internet media for healthcare and cancer awareness by young adults. This aspect of user-centric learning control is to motivate individuals to be more aware of their health, and promote a healthy lifestyle. Social med...
 
Thermal-aware memory mapping in 3D designs
Found in: ACM Transactions on Embedded Computing Systems (TECS)
By Ang-Chih Hsieh, Tingting Hwang
Issue Date:August 2013
pp. 1-22
DRAM is usually used as main memory for program execution. The thermal behavior of a memory block in a 3D SIP is affected not only by the power behavior but also the heat dissipating ability of that block. The power behavior of a block is related to the ap...
     
A Structural Equation Modeling Approach of the Toll-Like Receptor Signaling Pathway in Chronic Lymphocytic Leukemia
Found in: 2013 24th International Workshop on Database and Expert Systems Applications (DEXA)
By Athina Tsanousa,Lefteris Angelis,Stavroula Ntoufa,Nikos Papakonstantinou,Kostas Stamatopoulos
Issue Date:August 2013
pp. 71-75
Gene pathway identification is an open and active research area that has attracted the interest not only of biomedical scientists but also of a large number of researchers from disciplines related to knowledge discovery from biological data. In this paper,...
 
HPC university: getting information about computational science professional and educational resources and opportunities for engagement
Found in: Proceedings of the Conference on Extreme Science and Engineering Discovery Environment: Gateway to Discovery (XSEDE '13)
By Ange Mason, Marcio Faerman, Scott Lathrop, Steven I. Gordon
Issue Date:July 2013
pp. 1-4
This paper describes the HPC University website and how it can be utilized to obtain information about computational science and high performance computing education and training resources, opportunities for student internships, shared educational material...
     
Interactive e-books for children
Found in: Proceedings of the 12th International Conference on Interaction Design and Children (IDC '13)
By Allison Druin, Antonella De Angeli, Nadia Mana, Ornella Mich
Issue Date:June 2013
pp. 593-595
This one-day workshop is going to bring together top researchers and practitioners working in the area of interactive e-books for children. The goal of the workshop is defining key directions for future research in the design process and implementation of ...
     
Utilizing circuit structure for scan chain diagnosis
Found in: 2013 18th IEEE European Test Symposium (ETS)
By Wei-Hen Lo,Ang-Chih Hsieh,Chien-Ming Lan,Min-Hsien Lin,TingTing Hwang
Issue Date:May 2013
pp. 1-6
Scan chain diagnosis has become a critical issue to yield loss in modern technology. In this paper; we present a scan chain partitioning algorithm and a scan chain reordering algorithm to improve scan chain fault diagnosis resolution. In our scan chain par...
   
Love it or hate it!: interactivity and user types
Found in: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '13)
By Alistair G. Sutcliffe, Antonella De Angeli, Jennefer Hart
Issue Date:April 2013
pp. 2059-2068
This paper investigates general and individual evaluations of User Experience (UX) with interactive web sites. A series of studies investigate user judgment on web sites with different interactivity levels over repeated exposures. The more interactive webs...
     
The music room
Found in: CHI '13 Extended Abstracts on Human Factors in Computing Systems (CHI EA '13)
By Antonella De Angeli, Fabio Morreale, Paolo Rota, Raul Masu
Issue Date:April 2013
pp. 3099-3102
This paper presents The Music Room, an interactive installation where couples compose original music. The music is generated by Robin, an automatic composition system, according to relative distance between the users and the speed of their own movements. P...
     
Let's chalk!: strengthening communities through play
Found in: CHI '13 Extended Abstracts on Human Factors in Computing Systems (CHI EA '13)
By Angélica Rosenzweig Castillo, Matthew Jennex, Stephanie Louraine, Stephen Miller
Issue Date:April 2013
pp. 2573-2578
Greenways (public outdoor walking and biking paths) are unique communities ripe for collaboration. We propose Let's Chalk: a system for collaborative distance sidewalk chalk play that connects greenways in different locations to create an aesthetic experie...
     
Ranking and Clustering Software Cost Estimation Models through a Multiple Comparisons Algorithm
Found in: IEEE Transactions on Software Engineering
By Nikolaos Mittas,Lefteris Angelis
Issue Date:April 2013
pp. 537-551
Software Cost Estimation can be described as the process of predicting the most realistic effort required to complete a software project. Due to the strong relationship of accurate effort estimations with many crucial project management activities, the res...
 
High Speed Video Processing Using Fine-Grained Processing on FPGA Platform
Found in: 2013 IEEE 21st Annual International Symposium on Field-Programmable Custom Computing Machines (FCCM)
By Zhi Ping Ang,Akash Kumar,Yajun Ha
Issue Date:April 2013
pp. 85-88
This summary paper proposes an FPGA-based array processor which performs Laplacian filtering on a 40 by 40 pixel grayscale video. The architecture comprises of bit-serial pixel processors interconnected to give a two-dimensional mesh array. This architectu...
 
Apprehensive QoS monitoring of Service choreographies
Found in: Proceedings of the 28th Annual ACM Symposium on Applied Computing (SAC '13)
By A. Bertolino, A. Ciancone, C. Bartolini, G. De Angelis, R. Mirandola
Issue Date:March 2013
pp. 1893-1899
Service choreographies specify the intended interaction protocol among a set of cooperating services at the business application level. For end-users the non-functional properties exposed by a choreographed service composition can be as important as its fu...
     
ConAir: featherweight concurrency bug recovery via single-threaded idempotent execution
Found in: Proceedings of the eighteenth international conference on Architectural support for programming languages and operating systems (ASPLOS '13)
By Ang Li, Karthikeyan Sankaralingam, Marc de Kruijf, Shan Lu, Wei Zhang
Issue Date:March 2013
pp. 113-126
Many concurrency bugs are hidden in deployed software and cause severe failures for end-users. When they finally manifest and become known by developers, they are difficult to fix correctly. To support end-users, we need techniques that help software survi...
     
Data in the wild: some reflections
Found in: interactions
By Ania Bobrowicz, Bonnie Nardi, Chee Siang Ang, Diane J. Schiano
Issue Date:March 2013
pp. 39-43
Community + Culture features practitioner perspectives on designing technologies for and with communities. We highlight compelling projects and provocative points of view that speak to both community technology practice and the interaction design field as ...
     
ServicePot -- An Extensible Registry for Choreography Governance
Found in: 2013 IEEE 7th International Symposium on Service Oriented System Engineering (SOSE)
By Midhat Ali,Guglielmo de Angelis,Andrea Polini
Issue Date:March 2013
pp. 113-124
The Future Internet (FI) vision fosters the establishment of highly dynamic and continuously evolving systems in which different organizations, via provided e-services, dynamically cooperate at run-time, and possibly just for a single application level tra...
 
Verifying programs via iterated specialization
Found in: Proceedings of the ACM SIGPLAN 2013 workshop on Partial evaluation and program manipulation (PEPM '13)
By Alberto Pettorossi, Emanuele De Angelis, Fabio Fioravanti, Maurizio Proietti
Issue Date:January 2013
pp. 43-52
We present a method for verifying properties of imperative programs by using techniques based on the specialization of constraint logic programs (CLP). We consider a class of C programs with integer variables and we focus our attention on safety properties...
     
ASIC Clock Tree Estimation in Design Planning
Found in: 2013 4th International Conference on Intelligent Systems, Modelling and Simulation (ISMS)
By Ang Boon Chong
Issue Date:January 2013
pp. 619-626
In the early ASIC design planning phase, clock tree estimation always based on best guess of the ASIC planner. The critical elements such as power, latency and uncommon buffer in synthesized clock network will affect the performance as well as power defini...
 
Gesture-based interaction with 3D visualizations of document collections for exploration and search
Found in: Proceedings of the 18th ACM symposium on Virtual reality software and technology (VRST '12)
By Angélica de Antonio, Cristian Moral, Daniel Klepel, Martín J. Abente
Issue Date:December 2012
pp. 213-214
Acquisition and fusion of multiple imaging modalities is becoming an increasingly desired clinical practice. This is particularly the case in radiation therapy, where dosage must be determined using electron density calculations from CT images, which lack ...
     
Enriching Archaeological Parks with Contextual Sounds and Mobile Technology
Found in: ACM Transactions on Computer-Human Interaction (TOCHI)
By Antonella De Angeli, Carmelo Ardito, Maria F. Costabile, Rosa Lanzilotti
Issue Date:December 2012
pp. 1-30
The importance of cultural heritage in forging a sense of identity is becoming increasingly evident. Information and communication technologies have a great potential to promote a greater awareness and appreciation of cultural heritage. This article presen...
     
Active learning for relation type extension with local and global data views
Found in: Proceedings of the 21st ACM international conference on Information and knowledge management (CIKM '12)
By Ang Sun, Ralph Grishman
Issue Date:October 2012
pp. 1105-1112
Relation extraction is the process of identifying instances of specified types of semantic relations in text; relation type extension involves extending a relation extraction system to recognize a new type of relation. We present LGCo-Testing, an active le...
     
Analyzing Measurements of the R Statistical Open Source Software
Found in: 2012 35th Annual IEEE Software Engineering Workshop (SEW)
By Sophia Voulgaropoulou,Georgios Spanos,Lefteris Angelis
Issue Date:October 2012
pp. 1-10
Software quality is one of the main goals of effective programming. Although it has a quite ambiguous meaning, quality can be measured by several metrics, which have been appropriately formulated through the years. Software measurement is a particularly im...
 
End user mashups: analytical framework
Found in: Proceedings of the 2nd International Workshop on Adaptive Services for the Future Internet and 6th International Workshop on Web APIs and Service Mashups (WAS4FI-Mashups '12)
By Antonella De Angeli, Nikolay Mehandjiev
Issue Date:September 2012
pp. 36-39
The academic area of End User Development (EUD) aims to support non-programmers when they attempt to develop their own software in both organizational and leisure context. The EUD community has gathered a wealth of expertise in creating socio-technical sys...
     
Alternative methods using similarities in software effort estimation
Found in: Proceedings of the 8th International Conference on Predictive Models in Software Engineering (PROMISE '12)
By Lefteris Angelis, Makrina Viola Kosti, Nikolaos Mittas
Issue Date:September 2012
pp. 59-68
A large variety of methods has been proposed in the literature about Software Cost Estimation, in order to increase accuracy when predicting the effort of developing new projects. Estimation by Analogy is one of the most studied techniques in this area the...
     
StatREC: a graphical user interface tool for visual hypothesis testing of cost prediction models
Found in: Proceedings of the 8th International Conference on Predictive Models in Software Engineering (PROMISE '12)
By Ioannis Mamalikidis, Lefteris Angelis, Nikolaos Mittas
Issue Date:September 2012
pp. 39-48
Background: During the previous decades there has been noted a significantly increased research interest on the construction of prediction models for accurate estimation of software cost. Despite the development of sophisticated methodologies, there is a c...
     
Usable, Secure, Private Search
Found in: IEEE Security & Privacy
By Mariana Raykova,Ang Cui,Binh Vo,Bin Liu,Tal Malkin,Steven M. Bellovin,Salvatore J. Stolfo
Issue Date:September 2012
pp. 53-60
Real-world applications commonly require untrusting parties to share sensitive information securely. This article describes a secure anonymous database search (SADS) system that provides exact keyword match capability. Using a new reroutable encryption and...
 
Women vs. Men: Perceptions of Data Quality in Web Portals
Found in: 2012 Eighth International Conference on the Quality of Information and Communications Technology (QUATIC)
By Carmen Moraga,Ang&#x00E9;lica Caro,Rodrigo Romo Mu&#x00F1;oz,Maria &#x00C1;ngeles Moraga,Coral Calero
Issue Date:September 2012
pp. 293-298
The need to compete for user preference has arisen on the Internet. One competition-based strategy is to provide an adequate quality of service, and one of the key factors in this is the quality of the data provided. Web portals have been consolidated as a...
 
Investigating the Impact of Personality and Temperament Traits on Pair Programming: A Controlled Experiment Replication
Found in: 2012 Eighth International Conference on the Quality of Information and Communications Technology (QUATIC)
By Panagiotis Sfetsos,Panagiotis Adamidis,Lefteris Angelis,Ioannis Stamelos,Ignatios Deligiannis
Issue Date:September 2012
pp. 57-65
This paper presents the partial results of an extended replicated pair programming experiment, conducted at the Alexander Technological Educational Institute of Thessaloniki, Greece during the two semesters of the year 2009-10. The entire study involved 16...
 
An Investigation of Software Effort Phase Distribution Using Compositional Data Analysis
Found in: 2012 38th EUROMICRO Conference on Software Engineering and Advanced Applications (SEAA)
By Panagiota Chatzipetrou,Efi Papatheocharous,Lefteris Angelis,Andreas S. Andreou
Issue Date:September 2012
pp. 367-375
One of the most significant problems faced by project managers is to effectively distribute the project resources and effort among the various project activities. Most importantly, project success depends on how well, or how balanced, the work effort is di...
 
A hybrid metaheuristic algorithm for flexible job-shop scheduling problems with transportation constraints
Found in: Proceedings of the fourteenth international conference on Genetic and evolutionary computation conference (GECCO '12)
By Hervé Manier, Marie-Ange Manier, Qiao Zhang
Issue Date:July 2012
pp. 441-448
In this paper, we aim at solving flexible job shop scheduling problems with transportation constraints and bounded processing times. We propose a hybrid method of genetic algorithm, tabu local search and a modified shifting bottleneck procedure. The geneti...
     
UX_Mate: from facial expressions to UX evaluation
Found in: Proceedings of the Designing Interactive Systems Conference (DIS '12)
By Alberto Battocchi, Antonella De Angeli, Jacopo Staiano, María Menéndez, Nicu Sebe
Issue Date:June 2012
pp. 741-750
In this paper we propose and evaluate UX_Mate, a non-invasive system for the automatic assessment of User eXperience (UX). In addition, we contribute a novel database of annotated and synchronized videos of interactive behavior and facial expressions. UX_M...
     
Modeling task transitions to help designing for better situation awareness
Found in: Proceedings of the 4th ACM SIGCHI symposium on Engineering interactive computing systems (EICS '12)
By Angélica Leal, Gilles Coppin, Thomas Villaren
Issue Date:June 2012
pp. 195-204
In complex systems such as cockpits or unmanned systems, operators manage a set of tasks with high temporal dynamics. Frequent changes of situation within the same mission can sometimes induce a loss of operators' Situation Awareness. In this paper, we int...
     
Bag of textons for image segmentation via soft clustering and convex shift
Found in: 2012 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)
By Zhiding Yu, Ang Li,O. C. Au, Chunjing Xu
Issue Date:June 2012
pp. 781-788
We propose an unsupervised image segmentation method based on texton similarity and mode seeking. The input image is first convolved with a filter-bank, followed by soft clustering on its filter response to generate textons. The input image is then superpi...
 
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