Journal articles on the topic 'Communications and networks technologies, n.e.c'

New technologies represent novelty depending on the era in which they are viewed, but in all cases they represent social evolution in some way. At present, new technologies are associated with the use of computer tools that strengthen processes, mechanisms, and undoubtedly, social communication. This paper evaluates new technologies focused on social transformations, their impact on human behavior and the social repercussions they may bring with their prevalence over time. Several academic documents of a scientific and technical nature are evaluated, with a view to defining the paradigms of technologies in their evolutionary process through societies. The most outstanding results show that the modern world is subject to a significant impact of information technology, that it encompasses not only educational aspects but also family, personal and economic aspects, and that the implications of traditional substitution by technology may be detrimental to mankind. Keywords: Technological implications, new societies, technological impact. References [1]C. Renfrew y P. Bahn, Arqueología: Teoría, métodos y práctica., Madrid: Akal, 1993. [2]Y. Laniuk, «Freedom in the Society of Control: Ethical challenges,» Ethics and Bioethics, vol. 10, nº 34, pp. 203-220, 2021. [3]J. Chaves, «Desarrollo tecnológico en la Primera Revolución Industrial,» Universidad de Extremadura, Servicio de Publicaciones, Extremadura, 2004. [4]A. Bessarab, O. Mitchuk, A. Baranetska, N. Kodatska, O. Kvasnytsia y G. Mykytiv, «Social networks as a phenomenon of the information society,» Journal of Optimization in Industrial Engineering, vol. 14, nº 1, pp. 35-42, 2021. [5]E. Popkova, A. Bogoviz y B. Sergi, «Towards digital society management and ‘capitalism 4.0’ in contemporary Russia,» Humanities and Social Sciences Communications, vol. 8, nº 1, p. 77, 2021. [6]A. Núñez, «Riesgo e Incertidumbre en las Sociedades Tecnológicas complejas.,» Cuaderno del ateneo, pp. 44-57, 2007. [7]wikipedia, «Accidente del transbordador espacial Challenger,» 1989. [Online]. Available: https://es.wikipedia.org/wiki/Accidente_del_transbordador_espacial_Challenger. [Last access: 2021]. [8]J. Martínez, «La innovación tecnológica en las sociedades cooperativas y otras organizaciones de participación,» Rev.Est. Coop., vol. 48, 2001. [9]J. Echeverría, «Ética y sociedades tecnológicas,» Isegoría, vol. 41, pp. 217-229, 2009. [10]R. Pardo, «La cultura científico-tecnológica de las sociedades de la modernidad tardía,» Comunicar ciencia, vol. 51, pp. 35-86, 2001. [11]A. Zatls, «Metales, ambiente y las sociedades tecnológicas: ¿hacia dónde nos dirigimos?,» Química viva, vol. 10, nº 2, pp. 1-20, 2011.

From year to year the number of investigations on intelligent systems grows rapidly. For example this year 245 papers from 45 countries were sent for the Second International IEEE Conference on Intelligent Systems (www.ieee-is.org; www.fnts-bg.org/is) and this is an increase of more than 50% by all indicators. The presented papers on intelligent systems were marked by big audiences and they provoked a significant interest that ultimately led to the formation of vivid discussions, exchange of ideas and locally provoked the creation of working groups for different applied projects. All this reflects the worldwide tendencies for the leading role of the research on intelligent systems theoretically and practically. The greater part of the presented research dealt with traditional for the intelligent systems problems like artificial intelligence, knowledge engineering, intelligent agents, neural and fuzzy networks, intelligent data processing, intelligent control and decision making systems, and also new interdisciplinary problems like ontology and semantics in Internet, fuzzy intuitionistic logic. The majority of papers from the European and American researchers are dedicated to the theory and the applications of the intelligent systems with machine learning, fuzzy inference or uncertainty. Another big group of papers focuses on the domain of building and integrating ontologies of applications with heterogeneous multiagent systems. A great number of papers on intelligent systems deals with fuzzy sets. The papers of many other researchers underscore the significance of the contemporary perception-oriented methods and also of different applications in the intelligent systems. On the first place this is valid for the paradigm of L. A. Zadeh 'computing with words'. The Guest Editors in the present specialized journal volume would like to introduce a wealth of research with an applied and theoretical character that possesses a common characteristic and it is the conference best papers complemented and updated by the new elaborations of the authors during the last half a year. A short description of the presented in the volume papers follows. In 'Combining Local and Global Access to Ontologies in a Multiagent System' <B>R. Brena and H. Ceballos (Mexico)</B> proposed an original way for operation with ontologies where a part of the ontology is processed by a client's component and the rest is transmitted to the other agents by an ontology agent. The inter-agent communication is improved in this way. In 'Fuzzy Querying of Evolutive Situations: Application to Driving Situations' <B>S. Ould Yahia and S. Loriette-Rougegrez (France)</B> present an approach to analysis of driving situations using multimedia images and fuzzy estimates that will improve the driver's security. In 'Rememberng What You Forget in an Online Shopping Context' <B>M. Halvey and M. Keane (Ireland)</B> presented their approach to constructing online system that predicts the items for future shopping sessions using a novel idea called Memory Zones. In 'Reinforcement Learning for Online Industrial Process Control' the authors <B>J. Govindhasamy et al. (Ireland)</B> use a synthesis of dynamic programming, reinforcement learning and backpropagation for a goal of modeling and controlling an industrial grinding process. The felicitous combination of methods contributes for a greater effectiveness of the applications compared to the existing controllers. In 'Dynamic Visualization of Information: From Database to Dataspace' the authors <B>C. St-Jacques and L. Paquin (Canada)</B> suggested a friendly online access to large multimedia databases. <B>W. Huang (UK)</B> redefines in 'Towards Context-Aware Knowledge Management in e-Enterprises' the concept of context in intelligent systems and proposes a set of meta-information elements for context description in a business environment. His approach is applicable in the E-business, in the Semantic Web and in the Semantic Grid. In 'Block-Based Change Detection in the Presence of Ambient Illuminaion Variations' <B>T. Alexandropoulos et al. (Greece)</B> use a statistic analysis, clustering and pattern recognition algorithms, etc. for the goal of noise extraction and the global illumination correction. In 'Combining Argumentation and Web Search Technology: Towards a Qualitative Approach for Ranking Results' <B>C. Chesñevar (Spain) and A. Maguitman (USA)</B> proposed a recommender system for improving the WEB search. Defeasible argumentation and decision support methods have been used in the system. In 'Modified Axiomatic Basis of Subjective Probability' <B>K. Tenekedjiev et al. (Bulgaria)</B> make a contribution to the axiomatic approach to subjective uncertainty by introducing a modified set of six axioms to subjective probabilities. In 'Fuzzy Rationality in Quantitative Decision Analysis' <B>N. Nikolova et al. (Bulgaria)</B> present a discussion on fuzzy rationality in the elicitation of subjective probabilities and utilities. The possibility to make this special issue was politely offered to the Guest Editors by Prof. Kaoru Hirota, Prof. Toshio Fukuda and we thank them for that. Due to the help of Kenta Uchino and also due to the new elaborations presented by explorers from Europe and America the appearance of this special issue became possible.

This research makes empirical tests of a Bourdieu concept for sociology of science: the social hierarchy of objects. Looking at the specific field of Education, the research sought to measure the position of Digital Information and Communication Technologies (DICT) within this hierarchy. To this end, we collected metadata of thesis defended in postgraduate programs in Education in Brazil with grade five and higher between 1996 and 2016. The data indicated the production by HEI and geographically. Also the keywords were analyzed in a Network and indicators of centrality and density were used to map the hierarchy of objects and, consequently, the distribution of scientific capital among them in the field. Empirical tests have shown that DICT and distance education, as necessarily mediated by a technology, have relevance within the field as a concentration of symbolic capital. The analysis showed that the Hierarchy formed by the technologies segment was denser than the total network and that there was a considerable weight for the distance education modality. Regarding the hierarchy of objects in the DE subfield, a certain autonomy was observed in relation to the complete field, since its objects turned to subjects more important to the modality related to the student. Finally, statements from other DE studies were compared with the research data that showed some quantitative divergences, but qualitative convergences emphasizing the same observed trends and corroborating the analyzes of this research.ResumoEsta investigação faz testes empíricos de um conceito de Bourdieu para a sociologia da ciência: a Hierarquia Social dos Objetos. Olhando para o campo específico da Educação, a investigação procurou mensurar a posição das Tecnologias Digitais de Informação e Comunicação (TDIC) dentro desta hierarquia. Para tanto, foram coletados metadados de teses defendidas em Programas de pós-graduação em Educação no Brasil com nota cinco e superior entre os anos de 1996 e 2016. Os dados indicaram a produção por IES e geograficamente bem como as palavras-chave foram analisadas em rede e indicadores de centralidade e densidade foram utilizados para mapear a hierarquia dos objetos e, por consequência, a distribuição de capital científico entre eles no campo. Os testes empíricos mostraram que as TDIC e também a EaD, por ter necessariamente mediação por uma tecnologia, têm relevância dentro do campo enquanto concentração de capital simbólico. As análises mostraram que a Hierarquia formada pelo recorte de Tecnologias chegava a ser mais densa que a rede total e que havia um peso considerável para a modalidade a distância. Sobre a hierarquia de objetos no subcampo EaD, observou-se uma certa autonomia em relação ao campo completo, pois seus objetos se voltavam a assuntos mais caros à modalidade relacionados ao aluno. Por fim, foram confrontadas afirmações de outras investigações sobre EaD com os dados da investigação que mostraram algumas divergências quantitativas, mas convergências qualitativas enfatizando as mesmas tendências observadas e corroborando as análises desta investigação.Palavras-chave: Educação, Sociologia da ciência, Produção científica, Tecnologias Digitais de Informação e Comunicação.Keywords: Education, Sociology of science, Scientific production, Digital information and communication technologies.ReferencesÁVILA, Patrícia. A distribuição do capital científico: diversidade interna e permeabilidade externa no campo científico. Sociologia – problemas e práticas, Lisboa – Portugal, n. 25, p. 9-49, 1997.BLONDEL, Vincent D.; GUILLAUME, Jean-Çoup; LAMBIOTTE, Renaud; LEFEBVRE, Etienne. Fast unfolding of communities in large networks. Journal of Statistical Mechanics: Theory and Experiment, Trieste – Itália, n.10, p. 1000, 2008.BORGATTI, Stephen P.; EVERETT, Martin G.; JOHNSON, Jeffrey C. Analyzing Social Networks. Londres: SAGE, 2013.BOURDIEU, Pierre. Método científico e hierarquia social dos objetos. In: NOGUEIRA, Maria Alice; CATANI, Afrânio (Org.). Escritos de educação. Petrópolis: Editora Vozes, 2007. p. 33-38.BOURDIEU, Pierre. Os usos sociais da ciência: por uma sociologia clínica do campo científico. 1. ed. São Paulo: Editora UNESP, 2004. 88 p.CABRAL, Ana Lúcia Tinoco; TARCIA, Rita Maria Lino. O novo papel do professor na Ead. In: LITTO, Fredric Michael; FORMIGA, Marcos. Educação a distância: o estado da arte. v. 2; São Paulo: Pearson Education do Brasil, 2011. 443p.CORRÊA, André Garcia; MILL, Daniel Ribeiro Silva. Análise da percepção do docente virtual no ensino de música pela educação a distância. Acta Scientiarum. Education, Maringá, v. 38, n. 4, p. 425-436, Out.-Dez., 2016.COSTA, Larissa et al. Redes: uma introdução às dinâmicas da conectividade e da auto-organização. 1. ed. Brasília: WWF-Brasil, 2003. 91 p.KENSKI, Vani Moreira; MEDEIROS, Rosângela de Araújo; ORDÉAS, Jean. Grupos que pesquisam Educação a Distância no Brasil: primeiras aproximações. In: MILL, Daniel Ribeiro Silva et al. (Orgs.). Educação a distância: dimensões da pesquisa, da mediação e da formação. 1. ed. São Paulo: Artesanato Educacional, 2018. 194 p.MILL, Daniel Ribeiro Silva; OLIVEIRA, Márcia Rozenfeld Gomes. A Educação a distância em pesquisas acadêmicas: uma análise bibliométrica em teses do campo educacional. Educar em Revista, Curitiba, Educação especial n.4, 2014. p.15-36.MOORE, Michael G.; KEARSLEY, Greg. Educação a distância: uma visão integrada. São Paulo: Cengage Learning, 2010. 398 p.PELLEGRINI, Thalita de Oliveira; SILVA, Sheila Serafim da; FERREIRA, Maxwel de Azevedo. O perfil da pesquisa acadêmica sobre educação a distância no Brasil e no mundo. REAd, Porto Alegre, v. 23, n. especial, p.371-393, dez. 2017.SANTOS, Elaine Maria dos et al. Educação a distância no Brasil: Evolução da produção científica. In: CONGRESSO INTERNACIONAL DE EDUCAÇÃO A DISTÂNCIA, 13., 2007, Curitiba. Anais [...]. São Paulo: ABED, 2007.e3756106

Wireless network optimization is an important link in the beginning of the wireless communication network construction process, which decides the construction of wireless communication network whether scientific. This paper focuses on the method and content of the LTE wireless network optimization, mainly involves in the planning process and key technologies of LTE wireless network. First, this paper discusses LTE network parameters optimization include PCI, Cells, RS, C\N and RSC\RSRP. Then, verify the scheme scientific based on Automatic Cell Planning. Finally, through the network experiment examine the feasibility of the scheme.

The article is devoted to the development of digital economy and information networks on the basis of advances in information and telecommunication technologies, affecting the qualitative and structural changes in all sectors of social production, in particular in the EU labor market. This leads to the transformation of production systems, management and state regulation in most EU countries. Having recovered from World War II, humanity has launched a new economic model called "smart production and consumption". It is shown that the economy of the XXI century, acquiring more and more signs of digitalization, is significantly transformed into a global digital economy. The development of ICTs reflects notable changes in the organization of the production process and labor activities, as new technologies stop performing certain types of labor activities. At the same time, they create a demand for people with new professional and qualification characteristics and contribute to the emergence of new jobs, thus creating new opportunities and requirements that a modern automated worker should meet. The fact that new opportunities for Ukrainian IT specialists have appeared on the EU labor market deserves special attention, the number of which has increased significantly due to the military aggression of the Russian Federation against Ukraine. IT has become an integral part of modern life. Thus, at the beginning of 2022 there were 90 thousand IT specialists (programmers) working in Ukraine. However, it is worth noting that Ukraine is currently experiencing a very difficult military situation, which reflects an accelerated outflow of population to other regions of Ukraine and EU countries. About 3.5 million Ukrainians have moved to the European Union. Among the "forced migrants" there is a certain share of people with skills in the IT industry. Considerable attention is paid to the analysis of IT skills, which are the main driving force behind the digitalization of the EU labor market. In particular, these qualities include the ability to work with foreigners, to attract investment, to work with computer technology and use technology in various cases, and to learn quickly and know foreign languages. This makes IT specialists very demanding. On the EU labor market, professions such as IT recruiter, project manager, PR manager, product manager and system analyst are most attractive to men, while HR manager, SEO-marketer, copywriter and WEB-analyst are more popular among women. Methodology. The methodology of expert assessment of the level of digitalization in the EU labor market is determined by an integral indicator, namely the index of digitalization of the labor market. This index measures the share of employment in services, the share of employment in knowledge-intensive services, the level of access to ICTs, the level of use of ICTs, the level of adoption of new organizational models of work based on ICTs, the share of exports of information and communication services, and the share of exports of digital services. This methodology allows to rank the countries of the European Union on the degree of digitalization of the labor market and prove the ability of states to provide employment growth through the spread of digital technology and the development of a digital global space. Results. It has been argued that humans today are hostage to resource collapse. In this case there is a dilemma: either to move along the current path, or technologically to become part of nature, that is, to live at the expense of fundamentally new inexhaustible resources and technologies created by wildlife, but using the most modern technology. This means the convergence of science and technology, consisting of similarities in the device and function of relatively distant groups, namely the convergence in the evolution of such technologies as N-nano, B-bio, I-Information, C-cognitive, the so-called NBIC-technologies. It has been established that today's programmers come in different ranks: junior, middle, and senior, and are proficient in major programming languages such as C, C++, C#, Java, Python, JavaScript, and PHP. With these qualities, programmers can work in a variety of industries because they are highly adaptable to change and have patience, because technology is constantly changing. Therefore, undoubtedly, such employees in the field of digital technology are very desirable for employers. Practical implications. As an effective practical method of analyzing the digitalization of the EU labor market the system approach and the development of IT-technologies are proposed. They cover the whole complex of scientific and technical problems, which, for all their specificity and diversity, are similar in their understanding and consideration of the objects and systems they study. That is, sets of interrelated elements that act as a whole. The index of digitalization of the labor market is one of these elements. It is used to assess the large share of IT services in various areas of the EU labor market. Value/originality. The article discusses the current directions of IT influence on the digitalization of the EU labor market. It shows how exactly IT contributes to the implementation of automated labor at the current stage of development of the digital economy in the EU. The number of people engaged in technical and technological labor in the digital space is relatively increasing, which forms the digital employment market. The digitalization of the labor market is automated through information systems and the spread of information technology. It requires a new type of thinking from the modern worker, formed on the basis of general education and special knowledge and skills in the use of innovative information technologies.

Resumen: El objetivo de la presente investigación es explorar la estructura y el contenido de una red de usuarios de abuso sexual basado en imágenes en Twitter. Para ello se analizaron los perfiles de Twitter que contienen la palabra "Quemón o “Nudes” utilizando análisis de redes, técnicas de procesamiento natural del lenguaje. Entre 2017 y 2018 hubo una comunidad de abuso sexual basado en imágenes en Twitter. Al menos 329 usuarios se dedicaron y se auto describieron como cuentas sexualmente explícitas, vengativas, y en donde contenido sexual no consensual podía ser compartido de forma anónima. Ya con seguidores, la red comprende a más de 130,000 personas. Esta es una estimación conservadora, más cuentas podrían utilizar diferentes palabras clave, no tener ninguna descripción, o formar parte de comunidades privadas. Estos resultados sugieren que los consumidores de contenido de abuso sexual basado en imágenes son los principales responsables de su propagación. Abstract: This study aimed to explore the structure and content of an image-based sexual abuse user network on Twitter. For this purpose, Twitter profiles containing the word “Quemones” or "Nudes" were analyzed using network analysis, natural language processing techniques. Between 2017 and 2018 there was a community of image-based sexual abuse on Twitter. At least 329 users engaged in and self- described themselves as sexually explicit, vindictive accounts, and where nonconsensual sexual content could be shared anonymously. Already with followers, the network comprises more than 130,000 people. This is a conservative estimate; more accounts could use different keywords, have no description, or be part of private communities. These results suggest that consumers of image-based sexual abuse content are primarily responsible for its spread. Fuentes de Consulta: Allen, W. D. (2007). The Reporting and Underreporting of Rape. 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Future 5G networks are characterized by three basic ideas: enhanced mobile broadband communications, massive machine-type communications, and ultra-low-latency communications. Any of these requirements needs, to be fulfilled, the implementation of high-efficiency technologies at all levels. This includes some of the costliest mechanisms in terms of computational time and bitrate: information protection solutions. Typical techniques in this area employ complex algorithms and large protocol headers, which strongly reduces the effective baud rate and latency of future 5G networks and communications. This is especially relevant in the access network, which in 5G networks will follow a cloud-based architecture, where thousands of different devices must communicate, before aggregating all those streams to be sent to the backbone. Then, new and more efficient mechanisms are needed in the cloud radio access networks (C-RAN) for future 5G systems. Therefore, in this paper it is proposed a novel information protection scheme for C-RAN architectures based on resonant phenomena in optical fibers communicating the fronthaul and backhaul in 5G networks. Resonant structures and physical nonlinearities generate a chaotic signal which may encrypt and hide at physical level every communication stream in a very efficient manner. To evaluate the proposed mechanism, an experimental validation based on simulation techniques is also described and results discussed.

Network latency will be a critical performance metric for the Fifth Generation (5G) networks expected to be fully rolled out in 2020 through the IMT-2020 project. The multi-user multiple-input multiple-output (MU-MIMO) technology is a key enabler for the 5G massive connectivity criterion, especially from the massive densification perspective. Naturally, it appears that 5G MU-MIMO will face a daunting task to achieve an end-to-end 1 ms ultra-low latency budget if traditional network set-ups criteria are strictly adhered to. Moreover, 5G latency will have added dimensions of scalability and flexibility compared to prior existing deployed technologies. The scalability dimension caters for meeting rapid demand as new applications evolve. While flexibility complements the scalability dimension by investigating novel non-stacked protocol architecture. The goal of this review paper is to deploy ultra-low latency reduction framework for 5G communications considering flexibility and scalability. The Four (4) C framework consisting of cost, complexity, cross-layer and computing is hereby analyzed and discussed. The Four (4) C framework discusses several emerging new technologies of software defined network (SDN), network function virtualization (NFV) and fog networking. This review paper will contribute significantly towards the future implementation of flexible and high capacity ultra-low latency 5G communications.

The pandemic caused by COVID-19 led schools to continue their work by relying on digital technologies. Changes in this matter are observed within three dimensions in the theoretical and conceptual background: (a) the influence of ITC in education, (b) the macrosocial changes in the educational systems and public policy derived from the COVID-19 pandemic, and (c) the impact of the COVID-19 pandemic in higher education and its role for the future. The general objective of this research was to characterize the educational practices executed by the university community (students, professors, and managers) during the emerging remote classes derived from the pandemic at the Universidad Autonoma Metropolitana, Cuajimalpa Campus, a public educational institution in Mexico (through an explanation for each educational actor profile). As specific research objectives, this paper: (a) examines whether the professors and students had enough digital technology to continue with the classes, (b) defines the obstacles they had in the use of said digital technology, and (c) recognizes the existence of innovative educational practices and determines whether stated learning was achieved in educational programs. For this purpose, a mixed methodology was chosen, comprising the application of surveys to students and professors and semi-structured interviews with managers, professors, and students. It was found that there was innovation in the area of resources (material–economic dimension) and in the area of relationships (socio-political dimension), while the discursive dimension (cultural-discursive dimension) was negatively impacted. Based on the above, we conclude that the school culture of the UAM-C is solid and that it has the necessary technological resources to continue with the teaching–learning process. The educational practice was transformed, which resulted in advantages and disadvantages, but despite these situations, most students developed their learning.

This paper proposes the design of enabling technologies for practical wireless communication systems operating in the TV white space (TVWS). The main objective of this paper is to cover a macro perspective on the system design blocks including: (a) targeted use case applications and governing regulations, (b) channelization, physical (PHY) layer and medium access control (MAC) layer designs, and (c) achievable throughput and range. It is the intention of this paper to serve as a general guideline for designing wireless communication systems operating in TVWS. The core system design addresses both PHY and MAC layer issues with realistic system considerations. In the PHY layer, a channelization design that fits into the area-specific TV channels and a transceiver that enables data exchange in the TV bands are designed. In the MAC layer, a cognitive engine that manages access to vacant TV channels and MAC functionalities that facilitate effective medium access are also proposed. As a result, the system is capable of supporting up to a typical throughput of 80 Mbps, and a maximum number of 40 users, assuming all users performing the most bandwidth-hungry application in the use case scenario. The corresponding operating range is found reach up to 400 m.

Two hamiltonian paths P1 = 〈v1, v2, …, vn(G) 〉 and P2 = 〈 u1, u2, …, un(G) 〉 of G are independent if v1 = u1, vn(G) = un(G), and vi ≠ ui for 1 < i < n(G). A set of hamiltonian paths {P1, P2, …, Pk} of G are mutually independent if any two different hamiltonian paths in the set are independent. A bipartite graph G is hamiltonian laceable if there exists a hamiltonian path joining any two nodes from different partite sets. A bipartite graph is k-mutually independent hamiltonian laceable if there exist k-mutually independent hamiltonian paths between any two nodes from different partite sets. The mutually independent hamiltonian laceability of bipartite graph G, IHPL(G), is the maximum integer k such that G is k-mutually independent hamiltonian laceable. Let Qn be the n-dimensional hypercube. We prove that IHPL(Qn) = 1 if n ∈ {1,2,3}, and IHPL(Qn) = n - 1 if n ≥ 4. A hamiltonian cycle C of G is described as 〈 u1, u2, …, un(G), u1 〉 to emphasize the order of nodes in C. Thus, u1 is the beginning node and ui is the i-th node in C. Two hamiltonian cycles of G beginning at u, C1 = 〈 v1, v2, …, vn(G), v1 〉 and C2 = 〈 u1, u2, …, un(G), u1 〉, are independent if u = v1 = u1, and vi ≠ ui for 1 < i ≤ n(G). A set of hamiltonian cycles {C1, C2, …, Ck} of G are mutually independent if any two different hamiltonian cycles are independent. The mutually independent hamiltonianicity of graph G, IHC(G), is the maximum integer k such that for any node u of G there exist k-mutually independent hamiltonian cycles of G starting at u. We prove that IHC(Qn) = n - 1 if n ∈ {1,2,3} and IHC(Qn) = n if n ≥ 4.

Common exposure to various kinds of mobile and stationary devices based on screen technologies produce substantiation for the term screen communications. The relevancy of its usage is specified, also the principles of functioning in context of updating social practices and multimedia informational space are substantiated in the article. The issue is due to the fact that the term screen communications has not yet been put into academic usage, unlike such terms as communication, mass communication and social communication. Nevertheless contemporary social practices for using the screen (cell phone, e-book, tablet, etc.) have turned into a daily routine and even demonstrate screen-phobia. The evolution of the technologies, new media (multimedia, multi-platforms), growth of information flows, form and content diversity of informational products, socialization effect and accumulation of empirical experience urge society to resort to the screen for receiving information (film-, video-, TV-production, Internet sites, social networks, computers, cell phones, tablets, e-books, electronic billboards, videoinformational systems, etc.). The article analyzes characteristics of well-known communications forms and types when superimposed to the term screen communications. The problem raised a need for thorough analysis of screen communications which different strata of society master; moreover, a great significance of studying peculiarities of screen culture in the digital era is emphasized. The article cites information about the emergence of Generation C, formed by social networks (a lecture on Nielsen Consumer 360 Conference). The Connected Collective Consumer has a distinguished identity and is ready for self-expression (ideas, cultural projects, etc.) within the group. As a conclusion it substantiates the nonlinearity of the social systems development, including social networks which are exposed to both the socialization effect and diversification and disintegration processes, which leads to a communication connections collapse.

The gradual development of intelligent learning (iLearning) systems has prompted the changes of teaching and learning. This paper presents the architecture of an intelligent learning (iLearning) system built upon the recursive iLearning model and the key technologies associated with this model. Based on this model and the technical structure of a cloud-based intelligent system, the authors developed an exemplary iLearning system-”Mobile Class”, accessible from the Shanghai Lifelong Learning Network, an online platform for the continuing education of Shanghai residents. This cloud-based intelligent learning (C-iLearning) system can adopt the cloud management model and synchronize users' learning process in the clouds, so as to support users' continuous learning with different devices. Formal testing with target users revealed the effectiveness of this system in supporting anytime anywhere learning.

In the upcoming decade and beyond, the Cooperative, Connected and Automated Mobility (CCAM) initiative will play a huge role in increasing road safety, traffic efficiency and comfort of driving in Europe. While several individual vehicular wireless communication technologies exist, there is still a lack of real flexible and modular platforms that can support the need for hybrid communication. In this paper, we propose a novel vehicular communication management framework (CAMINO), which incorporates flexible support for both short-range direct and long-range cellular technologies and offers built-in Cooperative Intelligent Transport Systems’ (C-ITS) services for experimental validation in real-life settings. Moreover, integration with vehicle and infrastructure sensors/actuators and external services is enabled using a Distributed Uniform Streaming (DUST) framework. The framework is implemented and evaluated in the Smart Highway test site for two targeted use cases, proofing the functional operation in realistic environments. The flexibility and the modular architecture of the hybrid CAMINO framework offers valuable research potential in the field of vehicular communications and CCAM services and can enable cross-technology vehicular connectivity.

The connectivity and diagnosability of a multiprocessor system or an interconnection network is an important research topic. The system and interconnection network has a underlying topology, which usually presented by a graph. As a famous topology structure of interconnection networks, the n-dimensional leaf-sort graph CFn has many good properties. In this paper, we prove that (a) the restricted edge connectivity of CFn (n ≥ 3) is 3n − 5 for odd n and 3n − 6 for even n; (b) CFn (n ≥ 5) is super restricted edge-connected; (c) the nature diagnosability of CFn (n ≥ 4) under the PMC model is 3n − 4 for odd n and 3n − 5 for even n; (d) the nature diagnosability of CFn (n ≥ 5) under the MM* model is 3n − 4 for odd n and 3n − 5 for even n.

We present some results concerning hamiltonian properties of recursive circulant graphs in the presence of faulty vertices and/or edges. The recursive circulant graph G(N, d) with d ≥ 2 has vertex set V(G) = {0, 1, …, N - 1} and the edge set E(G) = {(v, w)| ∃ i, 0 ≤ i ≤ ⌈ log d N⌉ - 1, such that v = w + di (mod N)}. When N = cdk where d ≥ 2 and 2 ≤ c ≤ d, G(cdk, d) is regular, node symmetric and can be recursively constructed. G(cdk, d) is a bipartite graph if and only if c is even and d is odd. Let F, the faulty set, be a subset of V(G(cdk, d)) ∪ E(G(cdk, d)). In this paper, we prove that G(cdk, d) - F remains hamiltonian if |F| ≤ deg (G(cdk, d)) - 2 and G(cdk, d) is not bipartite. Moreover, if |F| ≤ deg (G(cdk, d)) - 3 and G(cdk, d) is not a bipartite graph, we prove a more stronger result that for any two vertices u and v in V(G(cdk, d)) - F, there exists a hamiltonian path of G(cdk, d) - F joining u and v.

The Internet of Things (IoT) revolutionised the way devices, and human beings, cooperate and interact. The interconnectivity and mobility brought by IoT devices led to extremely variable networks, as well as unpredictable information flows. In turn, security proved to be a serious issue for the IoT, far more serious than it has been in the past for other technologies. We claim that IoT devices need detailed descriptions of their behaviour to achieve secure default configurations, sufficient security configurability, and self-configurability. In this article, we propose S×C4IoT, a framework that addresses these issues by combining two paradigms: Security by Contract (S×C) and Fog computing. First, we summarise the necessary background such as the basic S×C definitions. Then, we describe how devices interact within S×C4IoT and how our framework manages the dynamic evolution that naturally result from IoT devices life-cycles. Furthermore, we show that S×C4IoT can allow legacy S×C-noncompliant devices to participate with an S×C network, we illustrate two different integration approaches, and we show how they fit into S×C4IoT. Last, we implement the framework as a proof-of-concept. We show the feasibility of S×C4IoT and we run different experiments to evaluate its impact in terms of communication and storage space overhead.

The Internet of Things (IoT) revolutionised the way devices, and human beings, cooperate and interact. The interconnectivity and mobility brought by IoT devices led to extremely variable networks, as well as unpredictable information flows. In turn, security proved to be a serious issue for the IoT, far more serious than it has been in the past for other technologies. We claim that IoT devices need detailed descriptions of their behaviour to achieve secure default configurations, sufficient security configurability, and self-configurability. In this article, we propose S×C4IoT, a framework that addresses these issues by combining two paradigms: Security by Contract (S×C) and Fog computing. First, we summarise the necessary background such as the basic S×C definitions. Then, we describe how devices interact within S×C4IoT and how our framework manages the dynamic evolution that naturally result from IoT devices life-cycles. Furthermore, we show that S×C4IoT can allow legacy S×C-noncompliant devices to participate with an S×C network, we illustrate two different integration approaches, and we show how they fit into S×C4IoT. Last, we implement the framework as a proof-of-concept. We show the feasibility of S×C4IoT and we run different experiments to evaluate its impact in terms of communication and storage space overhead.

In this paper, the authors propose a new parallel implemented approach on Graphics Processing Units (GPU) for training logistic regression model. Logistic regression has been applied in many machine learning applications to build building predictive models. However, logistic training regularly requires a long time to adapt an accurate prediction model. Researchers have worked out to reduce training time using different technologies such as multi-threading, Multi-core CPUs and Message Passing Interface (MPI). In their study, the authors consider the high computation capabilities of GPU and easy development onto Open Computing Language (OpenCL) framework to execute logistic training process. GPU and OpenCL are the best choice with low cost and high performance for scaling up logistic regression model in handling large datasets. The proposed approach was implement in OpenCL C/C++ and tested by different size datasets on two GPU platforms. The experimental results showed a significant improvement in execution time with large datasets, which is reduced inversely by the available GPU computing units.

Addiction, dysfunctional use of "new technologies" and difficulties in limiting time spent using it, are not unusual due to the increasing usage of the internet. Young people, who are almost constantly connected, are particularly vulnerable. Recognizing the risk of pathological addiction, this paper explores the use of Internet, social networks and mobile phones among young people (N=310) in Bosnia and Herzegovina. The aim of the research is to examine the extent to which young people use the internet, social networks and mobile phones, and what consequences this has on the emotional, cognitive and social functioning of youth. The study was conducted using the most commonly used diagnostic tool for measuring internet addiction, the so-called Internet Addiction Test, and a survey questionnaire created for this research. Results of the study showed a mild level of "new addiction" in youth, which included emotional and cognitive preoccupation with "new" ICT, neglect of work, lack of self-control and social problems caused by preoccupation with the Internet, social networks and mobile phones.

Nowadays, digital images are confronted with notable privacy and security issues, and many research works have been accomplished to countermeasure these risks. In this article, a novel scheme for data hiding in encrypted domain is proposed using fuzzy C-means clustering and compressive sensing technologies to protect privacy of the host image. The original image is preprocessed first to generate multiple highly correlated classes with fuzzy C-means clustering algorithm. Then, all classes are further divided into two parts according to proper threshold. One is encrypted by stream cipher, and the other is encrypted and compressed simultaneously with compressive sensing technology for easy data embedding by information hider. The receiver can extract additional data and recover the original image with data-hiding key and encryption key. Experiments and analysis demonstrate that the proposed scheme can achieve higher embedding rate about additional data and better visual quality of recovered image than other state-of-the-art schemes.

The purpose of the paper is to identify the links and connections among main themes of the search i.e., Mobile Technologies, Service Quality and Healthcare. It also aims at identifying the valuable contributions from authors, journals, countries, and institutions in the searched area. Data has been extracted from Scopus database and it covers the timeline from 2005 to 2021. The final documents (n=245) have been analysed through VOSviewer software and MS Excel. Results show that Guo, X., International Journal of Medical Informatics, Harbin Institute of Technology, China and United States are top performing author, journal, institution and countries respectively. According to the results for collaborations and associations, Bhuiya A., United States and Mobile Healthcare are the most prominent author, country and keyword with highest score of total link strength (TLS). Findings suggested important and valuable avenues for future research directions in terms of underperforming countries, under-utilized subject areas and under-explored themes (keywords). This study, to best of our knowledge, is the first of its kind in mapping the literature of combined themes (Mobile Technologies, Service Quality and Healthcare).

Straipsnyje, analizuojant teorinius mokslo komunikacijos modelius, tiriama formaliosios mokslo komunikacijos kaita.Tradicinės formaliosios mokslo komunikacijos modelių analizė atskleidė tipinių mokslo komunikacijos veikėjų ir tipinių jų funkcijų esatį, mokslo komunikacijos vyksmą informacijos grandine. Formaliosios dokumentinės mokslo komunikacijos modelių analizė leido konstatuoti šiuose modeliuose vyraujančią procesinę komunikacijos sampratą.Analizuojant informacijos ir komunikacijos technologijų taikymą mokslo komunikacijai ir su šiuo taikymu susijusius mokslo komunikacijos kultūros pokyčius įvertinančius mokslo komunikacijos modelius pastebėti tokie mokslo komunikacijos pokyčiai: naujų mokslo komunikacijos subjektų radimasis, komunikacijos vyksmas informacijos tinklu, formaliosios ir neformaliosios mokslo komunikacijos susiliejimas, persiklojimas, mokslininko komunikacinių intencijų reikšminimas. Ne tik šios įžvalgos, bet ir pastebėta pakitusi mokslo komunikacijos pranešimo artikuliacija leido konstatuoti klostantis naują mokslo komunikacijos paradigmą, grįstą semantine komunikacijos samprata.Pagrindiniai žodžiai: mokslinės informacijos sklaida, mokslo žinių sklaida, mokslo komunikacijos teorija, formali dokumentinė mokslo komunikacija, mokslo komunikacijos modeliai.Formal science communication in theoretical models: providence of changeMarija Stonkienė SummaryThe article presents an analys of W. Garveys and B. Griffith’s (1971, 1972, 1979), UNISIST (1971), F. W. Lankaster’s (1978), N. Fjallbrant’s (1997), T. M. Aitchison’s (1988), E. Buck’s, R. Flagan’s and B. Coles (1999), J. Hurd’s (2000), T. F. Sondergaard’s, J. Andersen’s, B. Hjorland’s revising and updating UNISIST (2003), Kling’s, G. McKim’s and A. King’ (2003), J. M. Makenzy Owen’s (2000, 2007), B.-C. Bjork’s (2007) theoretical models of science communication. The analysis of traditional formal science communication in these models indicated typical science communication subjects and functions in science communication. In the traditional formal science communication model, the process of science communication is perceived as an information chain. The analysis showed that the teorethical basis of these models is the concept of process communication. Information and communication technologies have been applied to science communication. Due to these technologies, communication culture in sciences has changed. The analysis of science communication models, which evaluate technological and cultural changes, showed the coming of new communication mediators and multifuncionality of all communication subjects. In the new science communication models the process of science communication is perceived as an alternative and the intersecting information chains as an information network. One apparent change is the convergence of formal and informal science communication. Due to this convergence, the concept of communicated message has changed. New tendencies allow to consider the emerging semantic approach to the concept of communication in science communication.

A k-containerC(u, v) of G between u and v is a set of k internally disjoint paths between u and v. A k-container C(u,v) of G is a k*-container if it contains all vertices of G. A graph G is k*-connected if there exists a k*-container between any two distinct vertices. The spanning connectivity of G, κ*(G), is defined to be the largest integer k such that G is w*-connected for all 1 ≤ w ≤ k if G is a 1*-connected graph and undefined otherwise. A graph G is super spanning connected if κ* (G) = κ(G). In this paper, we prove that the n-dimensional fully connected cubic network FCCNn is super spanning connected.

R outing p rotocol for l ow p ower and l ossy (RPL) is destined to support the specific requirements of l ow p ower and l ossy n etworks (LLN). This type of network suffers from the problem of determining and securing a routing protocol to best suit an environment. This article aims to present a new version of the efficient and secure RPL protocol. The proposed scheme consists of two parts : i) Proposing a new o bjective f unction (OF) based RPL which combines three nodes and links metrics are: e xpected r etransmission n umber (ETX), h ope c ount (HC), and the residual energy in order to have a precise decision to c hoose the optimal way to the des tination. ii) To securing the new efficient RPL protocol by combining an improved Diffie - Hellman (DH) algorithm for a robust key exchange model with k eyed - h ash m essage a uthentication c ode (HMAC) to ensure the authentication and integrity of RPL data exchan ged. To verify the level of security, we apply a formal verification using AVISPA tool which indicate that the s ecure and e fficient RPL (SE-RPL) achieve all security requirements. Simulation results on the Contiki platform illustrate that our proposed is m ore efficient in terms of p acket d elivery r atio (PDR) and energy compared to others standard OF.

The growing number of vehicles in cities has a great impact on our quality of life, such as air and noise pollution, traffic jams and traffic accidents. Cooperative Intelligent Transportation System (C-ITS) relies on communication technologies to provide innovative services and applications for transportation and traffic management. In the C-ITS context, users, roadside infrastructure and vehicles need to be connected and, for this purpose, a wide variety of wireless technologies can be used (e.g, vehicular WiFi, cellular and visible light communication). In this work we consider a VANET (Vehicular Ad-hoc NETwork) using vehicular WiFi (based on 802.11p). The communications in VANET networks have been studied for years and several routing algorithms have been developed for such a kind of network. However, a benchmark to compare the performance of such algorithms is still lacking. To fill this gap, the present work proposes a benchmark composed by instances of data routing for different scenarios in the VANET. Moreover, we propose a multi-objective algorithm based on ACO (Ant Colony Optimization) to compare with such benchmark. The results of simulations show the impact of several factors in the VANET connectivity, such as vehicle density, geographical location, propagation and fading models. The results are promising and indicate the importance of choosing appropriated simulation models.

A b-coloring of a graph G is a proper coloring of the vertices of G such that there exists a vertex in each color class joined to at least one vertex in each other color classes. The b-chromatic number of a graph G, denoted by φ(G), is the largest integer k such that G has a b-coloring with k colors. The b-chromatic sum of a graph G(V, E), denoted by φ′(G) is defined as the minimum of sum of colors c(v) of v for all v ∈ V in a b-coloring of G using φ(G) colors. The Mycielskian or Mycielski, μ(H) of a graph H with vertex set {v1, v2,…, vn} is a graph G obtained from H by adding a set of n + 1 new vertices {u, u1, u2, …, un} joining u to each vertex ui(1 ≤ i ≤ n) and joining ui to each neighbour of vi in H. In this paper, the b-chromatic sum of Mycielskian of cycles, complete graphs and complete bipartite graphs are discussed. Also, an application of b-coloring in image processing is discussed here.

Rapid expansion of 5G affects a number of sectors, including vehicular communications relying on cooperative intelligent transportation systems (C-ITS). More specifically, in the context of the Internet of Vehicles (IoV), a particular emphasis is placed on modern cellular V2X (C-V2X) technologies aiming to further improve road safety. This work originates from the detailed scope of the ongoing 5G-DRIVE research project promoting cooperation between the EU and China, with the aim of demonstrating IoV services that rely on vehicle-to-infrastructure (V2I) communications. With the C-V2X approach serving as a point of departure, we analyze and describe a specific green light-optimized speed advisory (GLOSA) use case, for which we provide a detailed descriptive framework, a proposed architectural framework for trials, as well as specific KPIs for the joint assessment of trials between the EU and China. We also discuss the context for performance test procedures to be conducted as part of the intended trials. GLOSA provides end-users with short-term information on upcoming traffic light status to optimize traffic flows, help prevent speed limit violations, improve fuel efficiency, and reduce pollution

Предложено правило построения нового класса быстрых ортогональных преобразований – матриц C, порядков n = (2k)2 и n = (3•2k)2, k = 1, 2, … построенных на основе совершенных двоичных решеток порядков N = 2k, либо N = 3•2k. Показано, что бинарные ортогональные матрицы C обладают практически привлекательным свойством многопелевого циклического сдвига (N-сдвига), что обеспечивает эффективную процедуру скользящего метода расчета коэффициентов преобразования.

Currently, there is dynamic global climate change, as evidenced by the reports of the Intergovernmental Panel on Climate Change (IPCC). For many agricultural regions, including the South of Russia, such changes increase the already high natural and climatic risks. The Stavropol Territory, like most other regions of Russia, has insufficient coverage of the territory with a network of meteorological stations, in connection with which it becomes necessary to use modern GIS technologies for analyzing spatial data. In this work, the interpolation method “Natural Neighbor” was used to analyze climate data. The use of geoinformation technologies made it possible to identify regional features of climate change throughout the Stavropol Territory over the past 60 years (1961–2020). In the region, there has been an increase in the average annual air temperature over the past 30 years by 0.9°C, while maintaining the current growth rate by 2050, the average annual temperature may increase by another 0.6°C. The intraannual heterogeneity of the temperature increase was revealed, so in January, February, March and August it ranges from +1.8 to +2.0°C, in October to +1.6°C, and for the rest of the months the increase does not exceed 1°C, and only in November, the temperature drops to -0.6°C. One of the main limiting factors of the efficiency of crop production is the moisture supply of the territory. Analysis of the deviations of the annual precipitation amount in the Stavropol Territory does not allow us to reveal a reliable trend in their change, since there are significant fluctuations over the years, which can lead to the occurrence of unfavorable arid phenomena. It was found that for the period 1961–2020. droughts of various durations occur annually. At the same time, there is a likelihood of extremely unfavorable 5-month droughts, which can provoke a whole range of adverse events, such as dry winds and dust storms. On the basis of geoinformation technologies, a series of maps was created that describes the climatic conditions of the period 1991–2020, which is a new climatic norm for the territory of the Stavropol Territory.

Semantic Web technologies act as an interoperability glue among different formats, protocols and platforms, providing a uniform vision of heterogeneous devices and services in the Internet of Things (IoT). Semantic Web technologies can be applied to a broad range of application contexts (i.e., industrial automation, automotive, health care, defense, finance, smart cities) involving heterogeneous actors (i.e., end users, communities, public authorities, enterprises). Smart-M3 is a semantic publish-subscribe software architecture conceived to merge the Semantic Web and the IoT domains. It is based on a core component (SIB, Semantic Information Broker) where data is stored as RDF graphs, and software agents using SPARQL to update, retrieve and subscribe to changes in the data store. This article describes a OSGi SIB implementation extended with a new persistent SPARQL update primitive. The OSGi SIB performance has been evaluated and compared with the reference C implementation. Eventually, a first porting on Android is presented.

Assistive technologies can significantly increase older adults' independent living if these technologies are designed to meet their needs and abilities. This study investigates conditions and present possibilities for assistive technology to provide physical and cognitive support to older adults in a specific domestic task, which is cooking a meal at home. The empirical material consists of six video recordings of adults aged 65 and over preparing a meal in their kitchen. The study unpacks the complexity of kitchen tasks, from the physical interactions involved to the temporal and spatial alignment of objects and goals in the kitchen. We focus on a) Physical manipulation, such as chopping, opening packages, and moving objects around the kitchen, b) Organisation and coordination, including switching, synchronising and monitoring cooking tasks, and c) Reorchestration and reorganisation in the form of inserting additional tasks, and rearranging tools and ingredients when adjustments need to be made in the cooking process. The study outlines design principles for operational and organisational interventions to support cooking a meal for independent living. The study concludes with discussing design implications for conversational user interfaces in the kitchen, and the significance of assistive kitchen technologies for ageing in place.

This study aims to find empirical information about the effect of Technological Pedagogical Content Knowledge (TPACK), and Technology Integration Self Efficacy (TISE) on Teacher Readiness for Online Learning (TROL). This study uses a quantitative survey method with path analysis techniques. This study measures the readiness of kindergarten teachers in distance learning in Tanah Datar Regency, West Sumatra Province, Indonesia with a sampling technique using simple random sampling involving 105 teachers. Empirical findings reveal that; 1) there is a direct positive effect of Technology Integration Self Efficacy on Teacher Readiness for Online Learning; 2) there is a direct positive effect of PACK on Teacher Readiness for Online Learning; 3) there is a direct positive effect of Technology Integration Self Efficacy on TPACK. 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Considering Contextual Knowledge: The TPACK Diagram Gets an Upgrade. Journal of Digital Learning in Teacher Education, 35(2), 76–78. https://doi.org/10.1080/21532974.2019.1588611 Moorhouse, B. L. (2020). Adaptations to a face-to-face initial teacher education course ‘forced’ online due to the COVID-19 pandemic. Journal of Education for Teaching, 46(4), 609–611. https://doi.org/10.1080/02607476.2020.1755205 Mulyadi, D., Wijayatingsih, T. D., Budiastuti, R. E., Ifadah, M., & Aimah, S. (2020). Technological Pedagogical and Content Knowledge of ESP Teachers in Blended Learning Format. International Journal of Emerging Technologies in Learning (IJET), 15(06), 124. https://doi.org/10.3991/ijet.v15i06.11490 Murtaza, G., Mahmood, K., & Fatima, N. (2021). Readiness for Online Learning during COVID-19 pandemic: A survey of Pakistani LIS students The Journal of Academic Librarianship Readiness for Online Learning during COVID-19 pandemic: A survey of Pakistani LIS students. 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Education and Information Technologies, 20(2), 241–263. https://doi.org/10.1007/s10639-013-9278-4 Paraskeva, F., Bouta, H., & Papagianni, A. (2008). Individual characteristics and computer self-efficacy in secondary education teachers to integrate technology in educational practice. Computers and Education, 50(3), 1084–1091. https://doi.org/10.1016/j.compedu.2006.10.006 Putro, S. T., Widyastuti, M., & Hastuti, H. (2020). Problematika Pembelajaran di Era Pandemi COVID-19 Stud Kasus: Indonesia, Filipina, Nigeria, Ethiopia, Finlandia, dan Jerman. Geomedia Majalah Ilmiah Dan Informasi Kegeografian, 18(2), 50–64. Qudsiya, R., Widiyaningrum, P., & Setiati, N. (2018). The Relationship Between TISE and TPACK among Prospective Biology Teachers of UNNES. Journal of Biology Education, 7(3), 305–311. https://doi.org/10.15294/jbe.v7i3.26021 Reflianto, & Syamsuar. (2018). Pendidikan dan Tantangan Pembelajaran Berbasis Teknologi Informasi di Era Revolusi Industri 4.0. 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With the interaction of geographic data and social data, the inference attack has been mounting up, calling for new technologies for privacy protection. Although there are many tangible contributions of spatial-temporal cloaking technologies, traditional technologies are not enough to resist privacy intrusion. Malicious attackers still steal user-sensitive information by analyzing the relationship between location and query semantics. Reacting to many interesting issues, oblivious transfer (OT) protocols are introduced to guarantee location privacy. To our knowledge, OT is a cryptographic primitive between two parties and can be used as a building block for any arbitrary multiparty computation protocol. Armed with previous privacy-preserving technologies, for example, OT, in this work, we first develop a novel region queries framework that can provide robust privacy for location-dependent queries. We then design an OT-assist privacy-aware protocol (or OTPA) for location-based service with rigorous security analysis. In short, the common query of the client in our solution can be divided into two parts, the region query R q and the content query C q , to achieve location k -anonymity, location m -diversity, and query r -diversity, which ensure the privacy of two parties (i.e., client and server). Lastly, we instantiate our OTPA protocol, and experiments show that the proposed OTPA protocol is reasonable and effective.

The rapid growth of the Internet and technological advances are forcing mobile operators to increasingly invest in network infrastructures. C-RAN and SDN are regarded as enabling technologies that can overcome the limitations faced by operators, by reducing costs, increasing scalability, and paving the way for the next generation of 5G cellular networks. In this paper, an architectural solution based on SDN and computational intelligence is proposed for C-RAN, which can adjust BBU-RRH mapping through network load balancing rules by predicting subjective and objective QoE metrics for UHD video streaming. The simulation results achieved gains between 59% and 129%, in scenarios without activating a new BBU and scenarios that involve activating a new BBU, respectively.

Recently different capacity boosting technologies, <span>including 3D beamforming and expanding operating bandwidth have been investigated and included in the enhanced fourth generation (4G) and fifth-generation standards. For mobile operators to enhance their network performance, applying these advanced technologies is vital. To achieve that, planning and optimization work need to consider the spatiotemporal distribution of users. Although the capacity impact of advanced antenna technologies is investigated well, deployment options to exploit their benefits in a cost-effective manner considering a realistic network environment are seldom reported. This work presents a data driven and multi-objective based optimal vertical beams placement for an enhanced 4G mobile network with the newly introduced C-band. The method is utilized for an area located in Addis Ababa, Ethiopia, taking into account the existing 4G mobile network as a reference configuration. Users are distributed based on the data collected by ethio-telecom network management system. Findings indicate that optimal vertical beams placement achieved for gradual deployment with consideration cell edge and aggregate throughput performances while reducing network cost. While being cost-effective, up to 69.2% and 73.8% cell edge performance gain is achieved at 20 and 30 pareto points relative to an existing macro mobile network.</span>

AbstractThe unprecedented growth of noise pollution over the last decades has raised an always increasing need for developing efficient audio enhancement technologies. Yet, the variety of difficulties related to processing audio sources in-the-wild, such as handling unseen noises or suppressing specific interferences, makes audio enhancement a still open challenge. In this regard, we present (the Neuro-Holistic Audio-eNhancement System), a Python toolkit for in-the-wild audio enhancement that includes functionalities for audio denoising, source separation, and —for the first time in such a toolkit—selective noise suppression. The architecture is specially developed to automatically adapt to different environmental backgrounds and speakers. This is achieved by the use of two identical neural networks comprised of stacks of residual blocks, each conditioned on additional speech- and noise-based recordings through auxiliary sub-networks. Along to a Python API, a command line interface is provided to researchers and developers, both of them carefully documented. Experimental results indicate that achieves great performance w. r. t. existing methods, preserving also the audio quality at a high level; thus, ensuring a reliable usage in real-life application, e. g., for in-the-wild speech processing, which encourages the development of speech-based intelligent technology.

The Internet of Things (IoT) paradigm allows the integration of cyber and physical worlds and other emerging technologies. IoT-enabled wireless sensor networks (WSNs) are rapidly gaining interest due to their ability to aggregate sensing data and transmit it towards the central or intermediate repositories, such as computational clouds and fogs. This paper presents an efficient multi-hop routing protocol (EMRP) for efficient data dissemination in IoT-enabled WSNs where hierarchy-based energy-efficient routing is involved. It considers a rank-based next-hop selection mechanism. For each device, it considers the residual energy to choose the route for data exchange. We extracted the residual energy at each node and evaluated it based on the connection degree to validate the maximum rank. It allowed us to identify the time slots for measuring the lifetime of the network. We also considered the battery expiry time of the first node to identify the network expiry time. We validated our work through extensive simulations using Network Simulator. We also implemented TCL scripts and C language code to configure low-power sensing devices, cluster heads and sink nodes. We extracted results from the trace files by utilizing AWK scripts. Results demonstrate that the proposed EMRP outperforms the existing related schemes in terms of the average lifetime, packet delivery ratio, time-slots, communication lost, communication area, first node expiry, number of alive nodes and residual energy.

Resilient Packet Ring (RPR) is one of the IP-based technologies that have been proposed to replace SONET/SDH in metropolitan area networks because it is well-adapted to handle diverse tra±c, including multimedia traffic, found in present-day networks. Additionally, the RPR network is used efficiently with nodes transmitting simultaneously as long as the paths of the packets do not overlap. However, when bridging RPR networks, packets are flooded on the bridged RPR network if the packet destination is on a remote network other than the source network. As a result, the network is used inefficiently, decreasing the available bandwidth for other traffic. In this paper, we propose enhanced topology discovery protocol and enhanced spanning tree protocol to prevent the flooding of packets on the bridged RPR network. Simulations were performed in order to evaluate the proposed solutions. The results show that the flooding of packets is successfully prevented and that the network is used more e±ciently as compared to the RPR

As one of the mainstream technologies of vehicle-to-everything (V2X) communication, Cellular-V2X (C-V2X) provides high reliability and low latency V2X communications. And with the development of mobile cellular systems, C-V2X is evolving from long-term evolution-V2X (LTE-V2X) to new radio-V2X (NR-V2X). However, C-V2X test specification has not been completely set in the industry. In order to promote the formulation of relevant standards and accelerate the implementation of industrialization, the field test and analysis based on LTE-V2X in the industrial park scenario is conducted in this paper. Firstly, key technologies of LTE-V2X are introduced. Then, the specific methods and contents of this test are proposed, which consists of functional and network performance tests to comprehensively evaluate the communication property of LTE-V2X. Static and dynamic tests are required in both line-of-sight (LOS) and non-line-of-sight (NLOS) scenarios to evaluate network performance. Next, the test results verify that all functions are normal, and the performance evaluation indexes are appraised and analyzed. Finally, it summarizes the whole paper and puts forward the future work.

The Freedom to Learn curriculum in higher education provides autonomous and flexible learning that is innovative, independent, and relevant to student needs. The use of new technologies such as inaRISK and biopore in project-based consideration learning is thought to be able to improve students' cognitive, affective, and psychomotor abilities. The purpose of this study was to determine the effect of using the inaRISK application and biopori technology in project based empathy learning. This research used a mixed method with a research and development (R n D) methods to determine the effectiveness of the learning model, a quasi-experiment to measure cognitive aspects, and applied descriptive statistics to measure affective and psychomotor aspects. To analyze R n D using ADDIE method then cognitive aspects, this research used homogeneity test, normality test, and t-test using SPSS 21 for Windows. The overall analysis (cognitive, affective, and psychomotor aspects) made use of a data sub code system through MAXQDA software, while network analysis was done by using Gephi 0.9.2 software. The results showed that there was a significant and positive influence of the inaRISK application and biopore technology on the students' cognitive, affective, and psychomotor aspects in the project-based consideration learning of Freedom to Learn.

The need to integrate multimedia in the process of teaching and learning at all levels of education is becoming more vital. Multimedia based on e-learning is seen as an effective alternative in teaching and learning process. This method is able to create a student-centered learning where students are encouraged of being independence; study at their own pace and at their own place. Nevertheless, the rapid development of information and communication technologies (ICT) in today's world has necessitate a new trend in the presentation of information in the form of Flash Video, which is more easy to understand and accessible instantly to users. The research is undertaken by introducing an e-based multimedia content by maintaining the concept of Gagne Learning Theory. An e-material entitled "Introduction to Computer Programming C++" has been developed containing learning activities that allow users to interact simultaneously with the material. The material is expected to be an effective teaching aid to entice students in the subject of programming.

We propose a semi-automatic HW/SW codesign flow for low-power and low-cost Neuro-Fuzzy embedded systems. Applications range from fast prototyping of embedded systems to high-speed simulation of Simulink models and rapid design of Neuro-Fuzzy devices. The proposed codesign flow works with different technologies and architectures (namely, software, digital and analog). We have used The Mathworks' Simulink© environment for functional specification and for analysis of performance criteria such as timing (latency and throughput), power dissipation, size and cost. The proposed flow can exploit trade-offs between SW and HW as well as between digital and analog implementations, and it can generate, respectively, the C, VHDL and SKILL codes of the selected architectures.

Industry 4.0, also known as the Internet of Things, is a concept that encompasses the joint applicability of operation, the Internet, and information technologies to expand the efficiency expectation of automation to include green and flexible processes and innovative products and services. Industrial network infrastructures must be modified to accommodate extra traffic from a variety of technologies in order to achieve this integration. In order to successfully implement cutting-edge wireless technologies, high-quality service (QoS) must be provided to end users. It is thus important to keep an eye on the functioning of the whole network without impacting base station throughput. Improved network performance is constantly needed, even for already-deployed cellular networks, such as the 4th generation (4G) and 3rd generation (3G). For the purpose of forecasting network traffic, an integrated model based on the long short-term memory (LSTM) model was used to combine clustering rough k-means (RKM) and fuzzy c-means (FCM). Clustering granules derived from FCM and RKM were also utilized to examine the network data for each calendar year. The novelty of our proposed model is the integration of the prediction and forecasting results obtained using existing prediction models with centroids of clusters. The WIDE backbone network’s live network traffic statistics were used to evaluate the proposed solution. The integrated model’s outcomes were assessed using a variety of statistical markers, including mean square error (MSE), root mean square error (RMSE), and standard error. The suggested technique was able to provide findings that were very accurate. The prediction error of LSTM with FCM was less on the basis of the MSE of 0.00783 and RMSE of 0.0885 at the training phase, where the prediction values of LSTM with the RKM had an MSE of 0.00564 and RMSE of 0.7511. Finally, the suggested model may substantially increase the prediction accuracy attained using FCM and RKM clustering.