Modern Network Technology Research Articles

A blockchain-based eHealthcare system interoperating with WBANs

Due to the increasing population of the elderly and patients with chronic diseases, more and more individuals are suffering from the limited service capabilities of the traditional medical systems. Benefiting from the rapid development of biomedical sensors, Internet of Things, and modern communication and network technologies, eHealthcare systems start appearing in the medical services, especially for the remote physical condition monitoring which improves the efficiency of the traditional medical systems. To provide a secure and low power healthcare solution, a blockchain-based eHealthcare system interoperating with wireless body area networks (WBAN) has been proposed, which utilizes the WBAN to network the devices of the patients and the blockchain technology as the data transmitting and storage method. The evaluation results show that the proposed system has the advantages of low hardware resources utilization, high-security protection level, and stable performance.

A Fusion Localization Method based on a Robust Extended Kalman Filter and Track-Quality for Wireless Sensor Networks.

As one of the most essential technologies, wireless sensor networks (WSNs) integrate sensor technology, embedded computing technology, and modern network and communication technology, which have become research hotspots in recent years. The localization technique, one of the key techniques for WSN research, determines the application prospects of WSNs to a great extent. The positioning errors of wireless sensor networks are mainly caused by the non-line of sight (NLOS) propagation, occurring in complicated channel environments such as the indoor conditions. Traditional techniques such as the extended Kalman filter (EKF) perform unsatisfactorily in the case of NLOS. In contrast, the robust extended Kalman filter (REKF) acquires accurate position estimates by applying the robust techniques to the EKF in NLOS environments while losing efficiency in LOS. Therefore it is very hard to achieve high performance with a single filter in both LOS and NLOS environments. In this paper, a localization method using a robust extended Kalman filter and track-quality-based (REKF-TQ) fusion algorithm is proposed to mitigate the effect of NLOS errors. Firstly, the EKF and REKF are used in parallel to obtain the location estimates of mobile nodes. After that, we regard the position estimates as observation vectors, which can be implemented to calculate the residuals in the Kalman filter (KF) process. Then two KFs with a new observation vector and equation are used to further filter the estimates, respectively. At last, the acquired position estimates are combined by the fusion algorithm based on the track quality to get the final position vector of mobile node, which will serve as the state vector of both KFs at the next time step. Simulation results illustrate that the TQ-REKF algorithm yields better positioning accuracy than the EKF and REKF in the NLOS environment. Moreover, the proposed algorithm achieves higher accuracy than interacting multiple model algorithm (IMM) with EKF and REKF.

An Enhanced Distributed Data Aggregation Method in the Internet of Things.

“Internet of Things (IoT)” has emerged as a novel concept in the world of technology and communication. In modern network technologies, the capability of transmitting data through data communication networks (such as Internet or intranet) is provided for each organism (e.g., human beings, animals, things, and so forth). Due to the limited hardware and operational communication capability as well as small dimensions, IoT undergoes several challenges. Such inherent challenges not only cause fundamental restrictions in the efficiency of aggregation, transmission, and communication between nodes; but they also degrade routing performance. To cope with the reduced availability time and unstable communications among nodes, data aggregation, and transmission approaches in such networks are designed more intelligently. In this paper, a distributed method is proposed to set child balance among nodes. In this method, the height of the network graph increased through restricting the degree; and network congestion reduced as a result. In addition, a dynamic data aggregation approach based on Learning Automata was proposed for Routing Protocol for Low-Power and Lossy Networks (LA-RPL). More specifically, each node was equipped with learning automata in order to perform data aggregation and transmissions. Simulation and experimental results indicate that the LA-RPL has better efficiency than the basic methods used in terms of energy consumption, network control overhead, end-to-end delay, loss packet and aggregation rates.

A Study of Applying Automated Assessment in Teaching College English Writing Based on Juku Correction Network

With the continuous advancement of modern network technology, the drawbacks of the tradition-al English writing course teaching mode have become increasingly prominent, and the automated scoring system has gradually been used in the writing course. This paper proposes a college English writing teaching model based on Juku Correction Network, and conducts empirical re-search on the use of Juku Correction Network in college English writing teaching. The research results show that the teaching mode based on Juku Correction Network can effectively improve the overall level of students' English writing, and stimulate students' English writing motivation.

Problems in Bridge Health Monitoring and Application of Intelligent Monitoring Technology

In view of the current research status of bridge health monitoring system at home and abroad, this paper summarizes the problems existing in bridge health monitoring research and discusses the solutions to these existing problems. On this basis, it also puts forward the advantages and development trends of intelligent health monitoring. Besides, taking the intelligent monitoring of Haiyin Bridge as an example, the modern network technologies such as intelligent collector, networking and cloud platform were adopted to realize the functions of real-time bridge monitoring, intelligent analysis, and safe type-warning. Thus, a complete set of visualized management system for bridge intelligent health monitoring information is finally formed. This shall provide references for the intelligent development of bridge health monitoring

New Methods for Collaborative Experiential Learning to Provide Personalised Formative Assessment

Abstract—¬Supporting diverse and rapidly changing learning styles of new digital age generations is one of the major hurdles to higher education in the age of massification of education markets. Higher education institutions must now utilize unprecedented network speed and mobile technology to create stimulating learning environments for new digital age generations. This paper presents a new learning and teaching model that combines dynamic learning space (DLS) and mobile collaborative experimental learning (MCEL) for supporting diverse learning styles of students. DLS assists students with state-of-art modern wireless network technologies in order to support fast-paced, multi-tasking, data and content intensive collaborative learning in class. The model further extends student learning activities beyond classroom by allowing students to continue their learning anywhere and anytime conveniently using their mobile devices. MCEL provides automated continuous personalized formative-feedback 24/7. The main objectives of the model are to improve student engagement and to provide ownership of their learning journey, experiential learning, contextualized learning, and formative assessment at low cost. The model employs three factors that influence collaborative experiential learning and formative assessment. The three factors are: (1) the use of learning space within the classroom, (2) wireless learning technology, and (3) mobile learning system (m-Learning). Pilot studies of the model are conducted and evaluated on two groups of postgraduate students. Their participation is observed, and a survey is conducted. The results show that (1) DLS encourages high-level learning and diverse learning styles to move away from passive low-level knowledge intensive learning activities; (2) MCEL supports Bigg's constructive alignment in curriculum design, contextualized experimental learning, and personalized formative learning.

Efficient spectrum sensing framework for cognitive networks

SummaryCognitive network is a modern networking technology that utilizes both the radio spectrum and the wireless station. The resources can be effectively utilized based on availability of knowledge gathered from the past experiences. By using cognitive radio technology, the new network is constructed to every node. Wireless devices' necessity is being increased nowadays, which leads to the demand for spectrum. The problems are high fluctuations of the different spectrum bands and the disconnections of the network. The cognitive radio network is proposed to be an optimal solution for both the spectrum scarcity and the spectrum inefficiency problems. Using the cognitive radio network, the wireless channel is shared with the primary users. The cognitive radio network provides high bandwidth for the mobile users by using specialized heterogeneous wireless architecture. These challenges are overcome by CR networks that define the concept of spectrum sensing. While using the spectrum, the performance of the network should not degrade. Hence, the framework planned will able to do this situation.

人工智能在现代网络技术中的应用

人工智能在现代网络技术中的应用

Bridging the Mobile Digital Divide in Sub-Saharan Africa: Costing under Demographic Change and Urbanization

Digital connectivity, including through the modern cellular network technologies, is expected to play a key role for the Future of Work in sub-Saharan Africa (SSA). We estimate the cost of introducing a full-scale 4G network by 2025 in SSA and an operable 5G network by 2040. We adapt the costing model of Lombardo (2019) by accounting for the significant demographic transformation and rapid urbanization in SSA. We use the WorldPop and GADM databases and the UN's medium-variant population projections to project the population densities at the highest level of administrative division for each SSA country in 2025 and 2040. For full 4G connectivity, the required capital and operational costs stands approximately at US$14 billion by 2025 and for 5G connectivity, costs amount to US$57 billion in 2040, conditional on having the 4G in place by 2025. These costs roughly translate to 8.4 percent of annual subscriber income, on a median basis, by 2025 for 4G and 4.9 percent of subscriber income by 2040 for 5G. Having the infrastructure in place is not sufficient to bridge the mobile Digital Divide. In addition, policies are needed to address affordability and knowledge gaps.

Localization Applications of 3D-GIS Artificial Weather Modification Operational Command System in Fuxin, China

Based on the command and management requirements of weather modification operations in Fuxin City, China, a new generation of three-dimensional operation command system platform for new artificial weather modification was developed and developed using modern communication network technology. The system uses integrated three-dimensional geographic information system (3D-GIS), global positioning system (GPS) positioning and virtual reality technology to calculate, analyze and process the new basic geographic information and weather modification information vector data, generate real-time weather modification operations and guide products in Fuxin area, and realize the impact on labor. The three-dimensional, comprehensive and effective management of basic weather information, early warning and forecast information, disaster prevention and mitigation information and other decision support information provides technical support for scientifically and effectively managing and directing weather modification operations.

Web-Oriented Software System for Analysis of Spatial Geophysical Data Using Geoinformatics Methods

This work is devoted to the description of a software system that was developed using modern network and geoinformation technologies for analysis of geospatial data. The system includes a client web application, which provides access to mapping services and geoprocessing services published on the GIS server. The approach, which forms the basis of the presented system, allows researchers to access an extensive geodatabase for remote sensing and Earth sciences, as well as a set of tools for their comprehensive analysis.

On the placement of controllers in software-Defined-WAN using meta-heuristic approach

Software Defined Networks (SDN) is a popular modern network technology that decouples the control logic from the underlying hardware devices. The control logic has implemented as a software entity that resides in a server called controller. In a Software-Defined Wide Area Network (SDWAN) with n nodes; deploying k number of controllers (k < n) is one of the challenging issue. Due to some internal or external factors, when the primary path between switch to controller fails, it severely interrupt the networks’ availability. In this regard, the proposed approach provides a seamless backup mechanism against single link failure with minimum communication delay based on the survivability model. In order to obtain an efficient solution, we have considered controller placement problem (CPP) as a multi-objective combinatorial optimization problem and solve it using two population-based meta-heuristic techniques such as: Particle Swarm Optimization (PSO) and FireFly Algorithm (FFA). For CPP, three metrics have been considered: (a) controller to switch latency, (b) inter-controller latency and (c) multi-path connectivity between the switch and controller. The performance of the algorithms is evaluated on a set of publicly available network topologies in order to obtain the optimum number of controllers, and controller positions. Then we present Average Delay Rise (ADR) metric to measure the increased delay due to the failure of the primary path. By comparing the performance of our scheme to competing scheme, it was found that our proposed scheme effectively improves the survivability of the control path and the performance of the network as well.

The Reform and Innovation of Ideological and Political Teaching Under the Multimedia

Abstract With the continuous development of modern information technology, Computer network and multimedia technology have been used more and more widely. Due to the diversity, integration, control, interactivity, and real-time characteristics of multimedia technology, the application of multimedia technology in teaching has greatly changed the traditional teaching mode of instilling knowledge to students in a single way and in a simple manner. It used its super integrated management of text, text, graphics, images, video, sound etc., making teaching intuitive, novelty, diversity and vivid characteristics, can give full play to the students’ thinking ability, cognitive ability and the ability to analyze problems, greatly improve the quality of teaching. Applying multimedia technology to the ideological and political course in colleges and universities can help improve the expressiveness and appeal of teaching content, inspire students’ interest in learning, increase the credibility and timeliness of teaching content, and create a multidimensional interactive ideological and political classroom model. This will enable the teaching of ideological and political courses in universities to be carried out more effectively. Therefore, we should effectively use multimedia technology to assist our teaching in ideological and political education.

Design of Data Acquisition System Based on Zigbee for Wireless Sensor Networks

With the continuous development of modern network technology, sensor technology and wireless communication technologies, the emergence and development of wireless sensor networks has been promoted. Among many wireless communication technologies, wireless communication technology featuring low power consumption, close proximity and low cost for ZigBee has attracted the research interest of researchers. Based on the current status of communication systems, based on the review and system analysis of wireless sensor networks, this paper proposes a ZigBee-based wireless sensor network data acquisition system, which avoids the reliability and installation of traditional wired sensor network data acquisition systems and shortcomings such as high maintenance costs and large wiring.

Exploration of College English Teaching Model Based on Network Group Collaboration

With the development of modern network and information technologies, the traditional teaching model no longer fits for modern college English teaching. Students only gain control right of the study in web-based, self-directed acceptance model in which their subjective initiative may be brought into full play; however, their critical thinking and communication skills may not be improved. The network group collaborative teaching model can be an option for the remedy of the deficiency. This paper summarizes basic elements of network group collaboration in college English teaching and explores the modes of collaborative learning applicable for teaching, followed by some suggestions proposed for the construction of English learning community which can be used to stimulate the willingness of true communication.

Application Strategy of Modern Network Technology in Higher Vocational Teaching Activities

The pace of the development of contemporary science and technology is accelerating, and the multimedia assisted instruction technology with computer as the core has become an indispensable teaching means in higher vocational colleges (HVCs), and also an important mark of educational reform in HVCs in China. The development of modern network technology provides a strong impetus to the teaching reform in HVCs. This paper analyzes the research status of modern network technology application in domestic and overseas higher vocational education (HVE). It was found that the research on the application of modern network technology in HVE in China has a certain gap with that in overseas countries, especially the developed countries. Meanwhile, problems also exist that multimedia technology is too backward, the quality of CAI courseware cannot be guaranteed, and the interaction between teachers and students lacks, etc. Focusing on these problems, we suggest the following measures. First, vigorously strengthening the construction of campus information environment, establishing strict introduction and management systems of network facilities, strengthening the construction requirements of software teachers, and enhancing the propaganda of modern network technology. Second, integrating information technology with curriculum teaching, focusing on the inspection and verification of theoretical knowledge and application results, and improving the effect of students’ knowledge acquisition. Third, enhancing the modernization of teaching technology in HVE, improving the memory effect of students’ knowledge, thus arousing the enthusiasm of learning and teaching enthusiasm, and solving the lack of interaction between teachers and students, through the service function provided by network information technology. The starting point of optimizing the atmosphere of teaching activities in HVC is from these three aspects. Improve the application level of modern network technology in higher vocational teaching activities in China, and establish the application strategy of modern network technology in higher vocational teaching activities.

On the Translation of Foreign Literature Based on Modern Information Network Technology

Based on the analysis of the existing problems in the translation and utilization of foreign literature and the characteristics and advantages of modern information network technology, this paper focuses on how to translate foreign documents by means of modern foreign literature tools.

Поняттєво-категоріальні характеристики міжнародної Інтернет-комунікації як інструментарію зовнішньополітичної діяльності

Проаналізовано поняттєво-категоріальні характеристики міжнародної інтернет-комунікації як інструменту зовнішньополітичної діяльності. Зазначено, що наукові дослідження у сфері комунікації, характеризуються такими етапами розвитку як здійснення емпіричних спостережень у сфері комунікації, розробка теорії масової комунікації, аналіз ролі масової комунікації в політичних процесах та формулювання теоретичних термінів, розробка методології та методів дослідження у сфері комунікації та розширення можливостей мас-медіа засобами «електронної революції», використання інноваційних комунікативних підходів до взаємодії у межах світового співтовариства. З’ясовано етапи формування підходів до трактування міжнародної інтернет-комунікації у контексті зовнішньої політики. Встановлено, що використання сучасного інструментарію міжнародної інтернет-комунікації привело до зміни усталених уявлень про роль і можливості участі міжнародних акторів у зовнішньополітичному процесі, зокрема щодо дій окремих нетрадиційних акторів міжнародних відносин у межах існуючих правових норм, спрямованих на процеси прийняття зовнішньополітичних рішень. Обґрунтовано наявність асиметричності міжнародної інтернет-комунікації та доведено її диференційований (позитивний/негативний) вплив на систему міжнародних відносин. Подано авторське визначення поняття «міжнародна інтернеткомунікація», яке використовується у сучасній науковій практиці як тотожне поняттям «соціальні медіаплатформи», «соціальні мережі», «нові медіа» та «комп’ютерно-опосередковані комунікації», і вживається для позначення взаємозв’язків, які складаються між міжнародно-політичними або суспільними акторами внаслідок використання сучасних мережевих технологій. Зазначено основні функції міжнародної інтернет-комунікації та зовнішньополітичної діяльності, такі як пояснювальна, прогностична, синтезуюча, методологічна, практична, а також проаналізовано вплив та структуру кожної функції зокрема. Встановлено, неоднозначність впливу соціальних медіаплатформ на зовнішню політику. Зазначено проблеми для міжнародної комунікації, такі як сприяння розвитку екстремістських рухів, недотримання безпеки збереження персональних даних, порушення авторських прав, поширення недостовірної та неправдивої інформації, що може впливати на політичні процеси в державі, зовнішньо-політична пропаганда.

Implementation SMART-learning tools of modern network technologies

The aims of the study is the design and implementation of SMART-learning based on advanced network technologies. The objectives of the study is to analyze the existing approaches to the design and implementation of SMART-learning using modern network technologies, the formation of the requirements for creating SMART-textbook and its structure. The object of the study is the educational process of pedagogical university. The subject of research is the use of advanced cloud technology for the design and implementation of SMART-pedagogical training in higher education. The paper analyzes, generalization and systematization of studies on the SMART-training on the use of cloud ICT in education, research and organizational activities of the university, made the experimental introduction of SMART-designed tutorial on using open source software and Internet resources. For evaluating the effectiveness of implementation of SMART-pedagogical training of students of higher education based on modern network technologies planned pedagogical experiment. Results of the study is planned to summarize the development of recommendations for the design and organization of training on SMART-based advanced network technologies in higher educational institutions.

The use cloud technology of the design work of students

The study is the organization of blended learning as the creation of educational projects using cloud technology. The objectives of the study is to analyze the existing approaches to blended learning using modern network technologies, developing abilities the project activity using the cloud. The object of the study is the educational process of pedagogical university. The subject of research is the use of modern technologies for the cloud of blended learning students in higher pedagogical institution. The paper analyzes, generalization and systematization of studies on the use of blended learning network technologies in education, research and organizational activities of the university, made the experimental introduction of technologies to create blended learning project skills of students using open source software and Internet resources. For evaluating the effectiveness of blended learning teaching students of higher education based on modern network technologies planned pedagogical experiment. Results of the study is planned to summarize the development of recommendations for the design and organization of blended learning based on advanced network technologies in higher educational institutions.