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The aim of this paper is to propose a framework analysis of urban bus transport service quality in Moroccan context. This framework is based on the principle of combining the user and the service managers, delegating authority and transport operator, vision and consists of three modules. Namely: Definition, evaluation and management of service quality. This paper will be carried out as follows: first,...
In an effort to evaluate the effectiveness of an audience response system (ARS), a mixed methods approach was developed using qualitative and quantitative questionnaire data together with direct measures such as exam and ARS performance scores. The results reveal that students' exam scores are higher for those students who answer ARS questions and that ARS performance scores are an indicator of how...
In Ambient Assisted Living scenarios, elderly people are supported by pervasive and smart environments in their daily mobility and activities, with which they interact by means of a variety of devices and services deployed in the house. These devices, in addition to their particular function, can provide useful context information about the user behavior. In this paper we propose an indoor localization...
In order to contribute towards handling the malnutrition problem among older adults, this paper proposes an electronic marketplace for food service, which provides a rich pool of information enabling the selection of reliable and nutritionally enriched food services for older adults, meeting their dietary constraints and different food preferences. In particular, the marketplace supports the publication,...
Cloud service certifications attempt to assure a high level of security and compliance. However, considering that cloud services are part of an ever-changing environment, multi-year validity periods may put in doubt the reliability of such certifications. We argue that continuous auditing of selected certification criteria is required to assure continuously reliable and secure cloud services and thereby...
With the fast adoption of Services Computing, even more driven by the emergence of the Cloud, the need to ensure accountability for quality of service (QoS) for servicebased systems/services has reached a critical level. This need has triggered numerous researches in the fields of trust, reputation and provenance. Most of the researches on trust and reputation have focused on their evaluation or computation...
This study addresses the understudied question of how content integrity for digital goods is signaled ex-ante in the absence of centralized oversight in self-organizing platforms. We build on signaling theory to theorize three classes of signals to explain how and why they influence platform user behavior. Experimental data from 380 users show that in the absence of centralized oversight in platforms...
While provenance research is common in distributed systems, many proposed solutions do not address the security of systems and accountability of data stored in those systems. In this paper, we survey provenance solutions which were proposed to address the problems of system security and data accountability in distributed systems. From our survey, we derive a set of minimum requirements that are necessary...
With the rapid development of information technology, it is inevitable that the distributed mobile computing will evolve to pervasive computing gradually whose final goal is fusing the information space composed of computers with the physical space in which the people are working and living in. However, most of WSN contexts coming from may be more and more unstructed, widespread and massive. Therefore,...
With the development of 3D display technology, the effect of 3D display attracts more and more attention. Vertical parallax is one of main factors that cause visual fatigue, and its evaluation methods are all subjective. In this paper, we investigate the use of electroencephalography (EEG) as a tool to evaluate vertical parallax, measuring the EEG response signal by presenting a series levels of vertical...
Consumer protection is an issue of great importance to Saudi Arabia, leading to the formation of a consumer protection agency as part of the Ministry of Commerce and Industry. However, studies have shown that this agency has not ensured adequate protection for consumers. This paper investigates whether better consumer protection may be achieved in Saudi Arabia through the design and implementation...
The collection of learner events within a server-client architecture occurs either at server, client or both complementarily. Such collection may be incomplete due to various factors, particularly for client-based monitoring, where learners can disable, delete or even modify their event logs due to privacy policies. The quality and accuracy of any analysis based on such data collections depends critically...
It is widely agreed that computer networks need to become more resilient to a range of challenges that can seriously impact their normal operation. Challenges include malicious attacks, misconfigurations, accidental faults and operational overloads. As part of an overall strategy for network resilience, a crucial requirement is the identification of challenges in real-time, followed by the application...
We present architectural and experimental work exploring the role of intermediate data handling in the performance of MapReduce workloads. Our findings show that: (a) certain jobs are more sensitive to disk cache size than others and (b) this sensitivity is mostly due to the local file I/O for the intermediate data. We also show that a small amount of memory is sufficient for the normal needs of map...
Telecare and telehealth system services can be dynamically configured to collect, analyse, store, and adapt to multimodal data about people as they go about their activities of daily life. These services need to be able to personalise to subjects and adapt to changes in lifestyles, environments and technology. Such dynamic adaptability may be well supported by a low-level rule programming approach;...
Complex networks consisting of humans and software services, such as Web-based social and collaborative environments, typically require flexible and context-based interaction models. Due to the dynamics in such systems, networks are in a state of constant flux and change. Several fundamental concepts, including discovery, interactions, task delegations and executions are no longer based on static...
The importance of real-time prognostics and health monitoring (PHM) for mission critical systems has increased as the users of these systems demand improved operational availability, greater reliability, increased safety, and reduced cost. Defining requirements for PHM systems, however, has always been a challenge. Huge improvements in cost, schedule, and customer satisfaction can be realized by applying...
This paper evaluates CONSPECT, a service that analyses states in a learner's conceptual development. It combines two technologies - Latent Semantic Analysis to analyse text and Network Analysis (NA) to provide visualisations - into a technique called Meaningful Interaction Analysis (MIA). CONSPECT was designed to help both online learners and their tutors monitor their conceptual development. This...
Rapid development of innovative location-centric applications promoted through widespread proliferation of wireless technology and availability of small handheld devices have brought about a new era in pervasive computing. Besides, they are constantly challenged by individual privacy protection necessities as the location information are stored and exchanged among entities and service providers. In...
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