224 research outputs found
A Multi-Stakeholder Information Model to Drive Process Connectivity In Smart Buildings
Smart buildings utilise IoT technology to provide stakeholders with efficient, comfortable, and secure experiences. However, previous studies have primarily focused on the technical aspects of it and how it can address specific stakeholder requirements. This study adopts socio-technical theory principles to propose a model that addresses stakeholders' needs by considering the interrelationship between social and technical subsystems. A systematic literature review and thematic analysis of 43 IoT conceptual frameworks for smart building studies informed the design of a comprehensive conceptual model and IoT framework for smart buildings.
The study's findings suggest that addressing stakeholder requirements is essential for developing an information model in smart buildings. A multi-stakeholder information model integrating multiple stakeholders' perspectives enhances information sharing and improves process connectivity between various systems and subsystems. The socio-technical systems framework emphasises the importance of considering technical and social aspects while integrating smart building systems for seamless operation and effectiveness.
The study's findings have significant implications for enhancing stakeholders' experience and improving operational efficiency in commercial buildings. The insights from the study can inform smart building systems design to consider all stakeholder requirements holistically, promoting process connectivity in smart buildings. The literature analysis contributed to developing a comprehensive IoT framework, addressing the need for holistic thinking when proposing IoT frameworks for smart buildings by considering different stakeholders in the building
5G: 2020 and Beyond
The future society would be ushered in a new communication era with the emergence of 5G. 5G would be significantly different, especially, in terms of architecture and operation in comparison with the previous communication generations (4G, 3G...). This book discusses the various aspects of the architecture, operation, possible challenges, and mechanisms to overcome them. Further, it supports users? interac- tion through communication devices relying on Human Bond Communication and COmmunication-NAvigation- SENsing- SErvices (CONASENSE).Topics broadly covered in this book are; • Wireless Innovative System for Dynamically Operating Mega Communications (WISDOM)• Millimeter Waves and Spectrum Management• Cyber Security• Device to Device Communicatio
An investigation of guidelines for the adoption of a sustainable enterprise resource planning system : a South African government institution perspective
Dissertation (MCom (Informatics))--Univerity of Pretoria, 2022.This study aims to investigate the feasibility for South African government institutions to adopt guidelines that will assist in adopting a sustainable ERP system to improve their information systems strategy and thus reduce costs brought about by the inadequate use of resources.
A systemised literature review was carried out from reputable journals to identify factors that contribute to the successful implementation of ERP systems and aspects that are seen to restrict the adoption of a fully integrated system. This study followed the mixed research methodology (qualitative dominating). In order to collect a variety of data in this study, a survey was distributed to 20 participants with closed-ended questions to collect numerical or quantitative data and open-ended questions to collect narrative or qualitative data in the same study. The TOE process model framework and a set of “critical success factors” were combined from the literature to provide a framework from which survey questions were developed.
Quantitative data were analysed using excel, while qualitative data were analysed by identifying themes (thematic analysis) in the data gathered. There were 103 initial codes extracted while analysing the data generated from the open-ended questions in Atlas.ti. A total of 57 codes were chosen after constant comparison and merging of comparable codes. 13 factors were identified that allow ERP systems to be successfully implemented and used. Nineteen issues that restrict ERP implementation and its full adoption were also identified in the field study. The current state of ERP implementation and adoption in the organisation under investigation indicate that the ERP system is being accepted successfully and that growth is being achieved gradually and steadily. It also suggested that the platform has a reasonable adoption rate and is adequately supported. The maturity of the organisation and system is high, and all modules are in use.
The study was significant in that it focused on the concerns and obstacles that organisations experience before adopting ERP projects and the challenges that arise after the system is adopted. Furthermore, this research adds to a better knowledge and analysis of core competencies to establish corrective measures before the occurrence of various issues and obstacles during the installation of ERP systems in organisations. The significance of the results is in that a framework of guidelines has been developed. This makes it an original contribution to the body of knowledge.UP Postgraduate Masters Research BursaryInformaticsMCom (Informatics)Unrestricte
A Case Study Exploring the Motivating Factors and Needs That Influence Older Adult Learners’ Decisions to Enroll and Persist in One University System of Georgia eMajor Collaborative Program
This qualitative case study seeks to examine older adult learners\u27 views toward technology use and their motivation, needs, and experiences while enrolled in the eMajor online Organizational Leadership bachelor\u27s degree program offered by the University System of Georgia (USG). The research will investigate what motivates students to enroll in and advance through a degree program and their present technological competencies in relation to online learning management systems. The case study will also strive to identify the demands of older adult learners and the influence online learning has on their drive for program completion. Qualitative data were collected from twelve older adult learners, 45 years of age and older, from one eMajor collaborative program at three partner University System of Georgia institutions through semistructured virtual interviews. The four themes that emerged from the interviews, program, degree, instructor influence, technology, online learning, and needs and experiences helped answer the guiding research questions. The study\u27s results revealed how older adult learners perceive the use of technology in higher education to increase academic achievement, learning comprehension, and course tasks. The current study sought to further assist higher education administrators and leaders understand older adult learners\u27 needs and motivators and how to better support these learners in an online environmen
Comunicações veiculares hĂbridas
Vehicle Communications is a promising research field, with a great potential for
the development of new applications capable of improving road safety, traffic efficiency,
as well as passenger comfort and infotainment. Vehicle communication
technologies can be short-range, such as ETSI ITS-G5 or the 5G PC5 sidelink
channel, or long-range, using the cellular network (LTE or 5G). However, none of
the technologies alone can support the expected variety of applications for a large
number of vehicles, nor all the temporal and spatial requirements of connected
and autonomous vehicles. Thus, it is proposed the collaborative or hybrid use of
short-range communications, with lower latency, and of long-range technologies,
potentially with higher latency, but integrating aggregated data of wider geographic
scope.
In this context, this work presents a hybrid vehicle communications model, capable
of providing connectivity through two Radio Access Technologies (RAT), namely,
ETSI ITS-G5 and LTE, to increase the probability of message delivery and, consequently,
achieving a more robust, efficient and secure vehicle communication
system. The implementation of short-range communication channels is done using
Raw Packet Sockets, while the cellular connection is established using the Advanced
Messaging Queuing Protocol (AMQP) protocol.
The main contribution of this dissertation focuses on the design, implementation
and evaluation of a Hybrid Routing Sublayer, capable of isolating messages that
are formed/decoded from transmission/reception processes. This layer is, therefore,
capable of managing traffic coming/destined to the application layer of intelligent
transport systems (ITS), adapting and passing ITS messages between the highest
layers of the protocol stack and the available radio access technologies.
The Hybrid Routing Sublayer also reduces the financial costs due to the use of
cellular communications and increases the efficiency of the use of the available
electromagnetic spectrum, by introducing a cellular link controller using a Beacon
Detector, which takes informed decisions related to the need to connect to a cellular
network, according to different scenarios.
The experimental results prove that hybrid vehicular communications meet the requirements
of cooperative intelligent transport systems, by taking advantage of
the benefits of both communication technologies. When evaluated independently,
the ITS-G5 technology has obvious advantages in terms of latency over the LTE
technology, while the LTE technology performs better than ITS-G5, in terms of
throughput and reliability.As Comunicações Veiculares são um campo de pesquisa promissor, com um grande
potencial de desenvolvimento de novas aplicações capazes de melhorar a segurança
nas estradas, a eficiência do tráfego, bem com o conforto e entretenimento dos
passageiros. As tecnologias de comunicação veĂcular podem ser de curto alcance,
como por exemplo ETSI ITS-G5 ou o canal PC5 do 5G, ou de longo alcance, recorrendo
Ă rede celular (LTE ou 5G). No entanto, nenhuma das tecnologias por
si só, consegue suportar a variedade expectável de aplicações para um número de
veĂculos elevado nem tampouco todos os requisitos temporais e espaciais dos veĂculos
conectados e autĂłnomos. Assim, Ă© proposto o uso colaborativo ou hĂbrido de
comunicações de curto alcance, com latências menores, e de tecnologias de longo
alcance, potencialmente com maiores latĂŞncias, mas integrando dados agregados
de maior abrangência geográfica.
Neste contexto, este trabalho apresenta um modelo de comunicações veiculares
hĂbrido, capaz de fornecer conectividade por meio de duas Tecnologias de Acesso
por Rádio (RAT), a saber, ETSI ITS-G5 e LTE, para aumentar a probabilidade de
entrega de mensagens e, consequentemente, alcançar um sistema de comunicação
veicular mais robusto, eficiente e seguro. A implementação de canais de comunicação
de curto alcance é feita usando Raw Packet Sockets, enquanto que a ligação
celular Ă© estabelecida usando o protocolo Advanced Messaging Queuing Protocol
(AMQP).
A contribuição principal desta dissertação foca-se no projeto, implementação e avaliação
de uma sub camada hibrĂda de encaminhamento, capaz de isolar mensagens
que se formam/descodificam a partir de processos de transmissão/receção. Esta
camadada é, portanto, capaz de gerir o tráfego proveniente/destinado à camada
de aplicação de sistemas inteligentes de transportes (ITS) adaptando e passando
mensagens ITS entre as camadas mais altas da pilha protocolar e as tecnologias
de acesso rádio disponĂveis.
A sub camada hibrĂda de encaminhamento tambĂ©m potencia uma redução dos custos
financeiros devidos ao uso de comunicações celulares e aumenta a eficiência do
uso do espectro electromagnĂ©tico disponĂvel, ao introduzir um mĂşdulo controlador
da ligação celular, utilizando um Beacon Detector, que toma decisões informadas
relacionadas com a necessidade de uma conexĂŁo a uma rede celular, de acordo com
diferentes cenários.
Os resultados experimentais comprovam que as comunicações veĂculares hĂbridas
cumprem os requisitos dos sistemas cooperativos de transporte inteligentes, ao
tirarem partido das vantagens de ambas tecnologias de comunicação. Quando
avaliadas de forma independente, constata-se que que a tecnologia ITS-G5 tem
vantagens evidentes em termos de latĂŞncia sobre a tecnologia LTE, enquanto que
a tecnologia LTE tem melhor desempenho que a LTE, ai nĂvel de dĂ©bito e fiabilidade.Mestrado em Engenharia EletrĂłnica e Telecomunicaçõe
Mapping and Deep Analysis of Image Dehazing: Coherent Taxonomy, Datasets, Open Challenges, Motivations, and Recommendations
Our study aims to review and analyze the most relevant studies in the image dehazing field. Many aspects have been deemed necessary to provide a broad understanding of various studies that have been examined through surveying the existing literature. These aspects are as follows: datasets that have been used in the literature, challenges that other researchers have faced, motivations, and recommendations for diminishing the obstacles in the reported literature. A systematic protocol is employed to search all relevant articles on image dehazing, with variations in keywords, in addition to searching for evaluation and benchmark studies. The search process is established on three online databases, namely, IEEE Xplore, Web of Science (WOS), and ScienceDirect (SD), from 2008 to 2021. These indices are selected because they are sufficient in terms of coverage. Along with definition of the inclusion and exclusion criteria, we include 152 articles to the final set. A total of 55 out of 152 articles focused on various studies that conducted image dehazing, and 13 out 152 studies covered most of the review papers based on scenarios and general overviews. Finally, most of the included articles centered on the development of image dehazing algorithms based on real-time scenario (84/152) articles. Image dehazing removes unwanted visual effects and is often considered an image enhancement technique, which requires a fully automated algorithm to work under real-time outdoor applications, a reliable evaluation method, and datasets based on different weather conditions. Many relevant studies have been conducted to meet these critical requirements. We conducted objective image quality assessment experimental comparison of various image dehazing algorithms. In conclusions unlike other review papers, our study distinctly reflects different observations on image dehazing areas. We believe that the result of this study can serve as a useful guideline for practitioners who are looking for a comprehensive view on image dehazing
Ami-deu : un cadre sémantique pour des applications adaptables dans des environnements intelligents
Cette thèse vise à étendre l’utilisation de l'Internet des objets (IdO) en facilitant le développement d’applications par des personnes non experts en développement logiciel. La thèse propose une nouvelle approche pour augmenter la sémantique des applications d’IdO et l’implication des experts du domaine dans le développement d’applications sensibles au contexte. Notre approche permet de gérer le contexte changeant de l’environnement et de générer des applications qui s’exécutent dans plusieurs environnements intelligents pour fournir des actions requises dans divers contextes. Notre approche est mise en œuvre dans un cadriciel (AmI-DEU) qui inclut les composants pour le développement d’applications IdO. AmI-DEU intègre les services d’environnement, favorise l’interaction de l’utilisateur et fournit les moyens de représenter le domaine d’application, le profil de l’utilisateur et les intentions de l’utilisateur. Le cadriciel permet la définition d’applications IoT avec une intention d’activité autodécrite qui contient les connaissances requises pour réaliser l’activité. Ensuite, le cadriciel génère Intention as a Context (IaaC), qui comprend une intention d’activité autodécrite avec des connaissances colligées à évaluer pour une meilleure adaptation dans des environnements intelligents.
La sémantique de l’AmI-DEU est basée sur celle du ContextAA (Context-Aware Agents) – une plateforme pour fournir une connaissance du contexte dans plusieurs environnements. Le cadriciel effectue une compilation des connaissances par des règles et l'appariement sémantique pour produire des applications IdO autonomes capables de s’exécuter en ContextAA. AmI- DEU inclut également un outil de développement visuel pour le développement et le déploiement rapide d'applications sur ContextAA. L'interface graphique d’AmI-DEU adopte la métaphore du flux avec des aides visuelles pour simplifier le développement d'applications en permettant des définitions de règles étape par étape. Dans le cadre de l’expérimentation, AmI-DEU comprend un banc d’essai pour le développement d’applications IdO. Les résultats expérimentaux montrent une optimisation sémantique potentielle des ressources pour les applications IoT dynamiques dans les maisons intelligentes et les villes intelligentes.
Notre approche favorise l'adoption de la technologie pour améliorer le bienêtre et la qualité de vie des personnes. Cette thèse se termine par des orientations de recherche que le cadriciel AmI-DEU dévoile pour réaliser des environnements intelligents omniprésents fournissant des adaptations appropriées pour soutenir les intentions des personnes.Abstract: This thesis aims at expanding the use of the Internet of Things (IoT) by facilitating the development of applications by people who are not experts in software development. The thesis proposes a new approach to augment IoT applications’ semantics and domain expert involvement in context-aware application development. Our approach enables us to manage the changing environment context and generate applications that run in multiple smart environments to provide required actions in diverse settings. Our approach is implemented in a framework (AmI-DEU) that includes the components for IoT application development. AmI- DEU integrates environment services, promotes end-user interaction, and provides the means to represent the application domain, end-user profile, and end-user intentions. The framework enables the definition of IoT applications with a self-described activity intention that contains the required knowledge to achieve the activity. Then, the framework generates Intention as a Context (IaaC), which includes a self-described activity intention with compiled knowledge to be assessed for augmented adaptations in smart environments. AmI-DEU framework semantics adopts ContextAA (Context-Aware Agents) – a platform to provide context-awareness in multiple environments. The framework performs a knowledge compilation by rules and semantic matching to produce autonomic IoT applications to run in ContextAA. AmI-DEU also includes a visual tool for quick application development and deployment to ContextAA. The AmI-DEU GUI adopts the flow metaphor with visual aids to simplify developing applications by allowing step-by-step rule definitions. As part of the experimentation, AmI-DEU includes a testbed for IoT application development. Experimental results show a potential semantic optimization for dynamic IoT applications in smart homes and smart cities. Our approach promotes technology adoption to improve people’s well-being and quality of life. This thesis concludes with research directions that the AmI-DEU framework uncovers to achieve pervasive smart environments providing suitable adaptations to support people’s intentions
Internet of Things Applications - From Research and Innovation to Market Deployment
The book aims to provide a broad overview of various topics of Internet of Things from the research, innovation and development priorities to enabling technologies, nanoelectronics, cyber physical systems, architecture, interoperability and industrial applications. It is intended to be a standalone book in a series that covers the Internet of Things activities of the IERC – Internet of Things European Research Cluster from technology to international cooperation and the global "state of play".The book builds on the ideas put forward by the European research Cluster on the Internet of Things Strategic Research Agenda and presents global views and state of the art results on the challenges facing the research, development and deployment of IoT at the global level. Internet of Things is creating a revolutionary new paradigm, with opportunities in every industry from Health Care, Pharmaceuticals, Food and Beverage, Agriculture, Computer, Electronics Telecommunications, Automotive, Aeronautics, Transportation Energy and Retail to apply the massive potential of the IoT to achieving real-world solutions. The beneficiaries will include as well semiconductor companies, device and product companies, infrastructure software companies, application software companies, consulting companies, telecommunication and cloud service providers. IoT will create new revenues annually for these stakeholders, and potentially create substantial market share shakeups due to increased technology competition. The IoT will fuel technology innovation by creating the means for machines to communicate many different types of information with one another while contributing in the increased value of information created by the number of interconnections among things and the transformation of the processed information into knowledge shared into the Internet of Everything. The success of IoT depends strongly on enabling technology development, market acceptance and standardization, which provides interoperability, compatibility, reliability, and effective operations on a global scale. The connected devices are part of ecosystems connecting people, processes, data, and things which are communicating in the cloud using the increased storage and computing power and pushing for standardization of communication and metadata. In this context security, privacy, safety, trust have to be address by the product manufacturers through the life cycle of their products from design to the support processes. The IoT developments address the whole IoT spectrum - from devices at the edge to cloud and datacentres on the backend and everything in between, through ecosystems are created by industry, research and application stakeholders that enable real-world use cases to accelerate the Internet of Things and establish open interoperability standards and common architectures for IoT solutions. Enabling technologies such as nanoelectronics, sensors/actuators, cyber-physical systems, intelligent device management, smart gateways, telematics, smart network infrastructure, cloud computing and software technologies will create new products, new services, new interfaces by creating smart environments and smart spaces with applications ranging from Smart Cities, smart transport, buildings, energy, grid, to smart health and life. Technical topics discussed in the book include: • Introduction• Internet of Things Strategic Research and Innovation Agenda• Internet of Things in the industrial context: Time for deployment.• Integration of heterogeneous smart objects, applications and services• Evolution from device to semantic and business interoperability• Software define and virtualization of network resources• Innovation through interoperability and standardisation when everything is connected anytime at anyplace• Dynamic context-aware scalable and trust-based IoT Security, Privacy framework• Federated Cloud service management and the Internet of Things• Internet of Things Application
Mastery of Hanyu Pinyin of Non-native Speakers
Proficiency in third language is a much-needed added value present day. Third language learning has been highlighted in the Malaysia Education Blueprint 2013 - 2025. One of the skills that needs to be mastered by students is communication in social situations using Malay, English and an additional language. There is an increase of trend in primary and tertiary educational institutions in Malaysia offering foreign language courses. Mandarin has become one of the most popular elective course options among students due to the factor of better career opportunities in the future. Hence, the purpose of this study is to examine the non-native speakers’ mastery in Hanyu Pinyin at the early stage. This study uses a survey to answer the main research questions. With the aim of achieving the research main goal, a survey will be conducted accordingly. Questionnaire instruments will be given to the students taking Mandarin language subjects at a public university. The findings of this study are expected to elevate the university, especially the for the academicians to produce high quality graduates with the ability to speak a third language fluently. On top of that, it will also enhance the university's reputation with outstanding student achievement, thus benefiting national development especially in international relations
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