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Some authors argue that it can be complicated to build systems with both usability and security, but the reality is that there is no real conflict between these two properties. Certainly, it takes more work to build systems that have the properties of usability and security, but in many cases it is a matter of doing just a good job not miracles. The purpose of this paper is to establish patterns that...
Modern software systems are difficult to test due to their distributed nature, and increased security complicates testing even further. Our hypothesis is that some security vulnerabilities are actually introduced due to developerspsila need to facilitate testing that software requirements have been implemented correctly. If these temporary security vulnerabilities are not removed before the software...
This paper deals with the usage of virtual reality and scenario languages in the field of teleoperation: how to enable a group of teleoperators to control, in a collaborative way, groups of real robots, in turn collaborating with each other to achieve complex tasks; such tasks include inspecting a dangerous area or exploring a partially unknown environment. The main goal is to obtain efficient, natural...
The today mainly incorporated sensory modalities vision and hearing are most often highly charged due to an increasing number, as well as a rising complexity of diversified assistance systems in vehicles. These systems, originally developed for "supporting" the driver in its tasks, increasingly directs to operation errors caused by cognitive overload. The sense of touch - as additional interaction...
An audio system is one of the basic components of a humanoid robot designed for natural interaction.For many interaction purposes it is sufficient to use the sound detection and localization as attention system for the vision system.In this paper the audio perception module of the robot ROMAN is presented including the integration into the existing control structure and the localization algorithm...
This paper describes the new concepts of collaborative systems quality evaluation. There are identified structures of collaborative systems. The paper defines the quality characteristics of collaborative systems. There are proposed a metric to estimate the quality level of collaborative systems. There are performed measurements of collaborative systems quality using a specially designed software.
An algorithm to detect collisions between both rigid and deformable objects is presented. The approach exploits benefits of a bounding volume hierarchy (BVH) and a feature-based method. The BVH decomposes the three dimensional polygonal objects into a hierarchy of spheres. The lowest level of the hierarchy is formed utilising spheres which bound 1-rings surrounding each vertex of the original mesh...
In this paper we present an evaluation methodology of personalized delivery of multimedia resources in an e-learning platform that takes advantage of Web 2.0 technologies and its standards, such as (i) streaming using RSS and Atom feeds, (ii) searching using meta-data search engine, (iii) delivering using ubiquitous computing and (iv) personalized learning. Our framework consists of the following...
As a consequence of various situational and personal factors, programmers use a variety of styles when performing software development and maintenance tasks. In this paper, we develop a contextual framework that links situational, task-oriented, and individual factors to a set of traits. These traits are expressed as behavioural modifiers, and thus, influence one's performance of tasks such as computer...
The main problem for generating an extractive automatic text summary is to detect the most relevant information in the source document. For such purpose, recently some approaches have successfully employed the word sequence information from the self-text for detecting the candidate text fragments for composing the summary. In this paper, we employ the so-called n-grams and maximal frequent word sequences...
We present a fully automated three-dimensional model-based, real-time capable approach to distinguish six universal facial expressions from visual images of human faces. The face model is fitted to the images of a publicly available data base. From the model parameters two sets of features are computed, person-specific and non-person-specific to estimate the facial expression visible in the current...
Understanding information graphics rely on thought process of graphics' reader, and thinking has the most important role in interpretation and exploitation. We are interested in the cognitive mechanisms underlying interaction with information graphics. In this study, we studied those cognitive processes which are employed when interacting with information graphics. Based on these experiments, we have...
The usability is being considered an incisive factor of the application's success of mobile computation segment, it is based on user experience conception limitation, so any techniques, method or idea which could improve the mobile user experience, must be carefully studied. The Vaire tool uses Mandos method of interaction for infrastructure support and together they propose a new interaction form...
An important issue when evaluating a search tool is the satisfaction that is expressed by its users. While there are many factors that affect satisfaction, we believe that users' expectations affect their evaluation of a query's response, and in turn, their satisfaction. We validate this perspective by measuring individuals' expectation, judgement of response quality, and overall satisfaction for...
An agent structure is presented for communication between users and agent systems through multiple communication modes. Two application systems are also presented; and e-mail monitoring system for keeping track of the user's e-mail while the user is away from the office, and a Web-based event monitoring system for monitoring events such as weather alerts.
Given its current state of the art, model-based UI development (MBDUI) is able to fulfill the major requirements of desktop and mobile applications, such as form-based user interfaces that adapt to the actual context of use. More recent research deals with the development of 3D interactive multimodal environments. Though user-centered design is more and more driving the design of these environments,...
Device-assisted navigation is rapidly becoming a major topic in computer science. PDAs and other small devices are enabling the introduction of navigational assistants to many different spaces. These areas are generally filled with points of interest with which users may choose to interact with. The natural behavior of users in such a space is to explore, interacting with objects the user deems worthy...
This article proposes a methodology to study coarticulation in sign language. Our aim is to provide information in sign language (SL) thanks to a displayed signing avatar performing SL predefined animations. Therefore, we explain the approach we have chosen to model coarticulation, and animate our avatar. We also propose a definition of what coarticulation is, based on an overview of the literature,...
A control methodology for the operation of a hydraulic excavator using a haptic operating device is developed. The main idea is to use position controllers for both the excavator and the operating device where both control loops output the reference position to the other, i.e., two position controlled systems are placed in a feedback loop with each other. The human operator acts as an input disturbance...
The ability to use the Internet can provide an important contribution to an older adult's quality of life. Communication via email with family, friends and service providers has become a critical factor for improving ones ability to cope with modern society as individual's age. The problem is that as users age, natural physical and cognitive impairments make it more difficult for them to use the required...
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