Personal Communication Networks Research Articles

Retracted: Malicious Intrusion Data Mining Algorithm of Wireless Personal Communication Network Supported by Legal Big Data

Retracted: Malicious Intrusion Data Mining Algorithm of Wireless Personal Communication Network Supported by Legal Big Data

Local News Deserts in China: The Role of Social Media and Personal Communication Networks

The field of local news is often associated with news deserts, commonly defined as geo-based communities without newspapers or other legacy media as providers of locally oriented news and civic information. This phenomenon is expanding in global society due to the diminishing presence of newspapers at moments of accelerated digitization. This study examines the multiplex nature of news deserts in rural and suburban areas in China. Data were collected through a multi-methods approach combining two focus groups and 44 semi-structured in-depth interviews. Patterns of engagement among interviewees reveal that smartphone-based social media applications and digital platforms function as viable sources of news, and incidental exposure to news has become the norm of digital news use. Government-orchestrated convergent media services and WeChat channels are preferred choices by most research participants for local news. We argue that a media ecology perspective may be a productive approach to understanding community news and local newspapers.

Malicious Intrusion Data Mining Algorithm of Wireless Personal Communication Network Supported by Legal Big Data

Wireless personal communication network is easily affected by intrusion data in the communication process, resulting in the inability to ensure the security of personal information in wireless communication. Therefore, this paper proposes a malicious intrusion data mining algorithm based on legitimate big data in wireless personal communication networks. The clustering algorithm is used to iteratively obtain the central point of malicious intrusion data and determine its expected membership. The noise in malicious intrusion data is denoised by objective function, and the membership degree of communication data is calculated. The change factor of the neighborhood center of gravity of malicious intrusion data in wireless personal communication network is determined, the similarity between the characteristics of malicious intrusion data by using the Markov distance was determined, and the malicious intrusion data mining of wireless personal communication network supported by legal big data was completed. The experimental results show that the accuracy of mining malicious data is high and the mining time is short.

The Study on the Performance of Beef Cattle Farmer Groups as an Economic Institution in Indonesia: Based on The Communication Networks

Analysis of the relationship between personal characteristics and communication networks is needed to assess beef cattle farmer groups' performance. One of the problems in developing beef cattle farming in Indonesia is that it has not become a farmer economic institution. This study aimed to analyze the relationship between beef cattle farmers' characteristics and the communication network. The research location was a group of beef cattle farmers who were members of the Cinagarabogo Centre of smallholder livestock (SPR) in Subang Regency, West Java Province. The research took place from May to December 2019. Quantitative research with research samples was Sari Mulya Mandiri and Bina Insani farmers group. Respondents were 30 beef cattle farmers. The data collected were processed by Sociometric Analysis, Analysis of Communication Network Structure, and Spearman Rank Correlation Test. The results showed that farmer characteristics were significantly related to the communication network for all information. The limitation of this study is only looking at performance-based on communication networks. Further research is needed to study the causality model of the farmer adoption rate determinants of the group capacity strengthening program.

Guest Editorial

Guest Editorial

Comparative Study on Spreading Codes

In this paper, we studied on spreading code for wireless communication, their performance analysis, applications and its implementation. Spread-spectrum systems have found important commercial applications in CDMA cellular networks and wireless personal communication networks. Implementation is complex, mainly because spreading the baseband (by a factor that can be several orders of magnitude) forces the electronics to act and react accordingly, which, in turn, makes the spreading and dispreading operation necessary. In spread spectrum the transmission signal bandwidth is much higher than the information bandwidth. The signal occupies a bandwidth much larger than what is necessary to send the information in spread spectrum technology. CDMA uses unique spreading codes to spread the baseband data before transmission data. The performance of a CDMA system gets controlled by two types of interference, namely ISI and MAI which are the function of auto and cross correlation values of the spreading codes respectively. The existing codes using Additive White Gaussian Noise channel under multi-user has been compared with the Bit Error Rate(BER) performance.

KOMUNIKASI DAKWAH WAHDAH ISLAMIYAH DI SULAWESI SELATAN

This paper discusses the results of research empirically on dakwah communication of the group of Wahdah Islamiyah in South Sulawesi. There are two focus were discussed, namely; the communication strategy and communication networks of dakwah. The results indicate that; (1) The communication strategy was developed by strengthening the competency of preachers in terms of formulating material of dakwah, communication skills and strengthening the quality of their personality. The dakwah messages that formulated related to the problems facing the peoples, and the earnest efforts conducted to do not happen social cultural inequalities between the preachers with the people by sending the preachers whom coming from the communities which have the same social cultural background; (2) The communication network of dakwah on the macro level developed by collaborating with the institutions of Government and the non-formal institutions in the countries of the Middle East, so the dakwah movement supported morally and materially; (3) the communications network at the micro level developed by Wahdah Islamiyah with emphasis on strength of personal communication network through the program “one cadre get one cadre (sks)”

A Call Blocking Model and Its Optimal Control Algorithm in LTE Networks

Call admission control must be designed to guarantee both a grade of service (GoS), i.e., probability of blocking new call, probability of forced termination of calls already in progress due to handoffs, and a quality of service (QoS), i.e., signal-to-interference ratio (SIR). Thus how to design appropriately call admission control policy is crucial in the envisioned personal communication networks. Considering user mobility in LTE networks, a call blocking model and its optimal solution algorithm is proposed to identify the criteria with which new mobile terminal requests will be blocked and to define the performance results, which will determine how optimal the resource allocation is.

Curated Flows: A Framework for Mapping Media Exposure in the Digital Age

Advancing theory in media exposure and effects requires contending with an increasing level of complexity and contingency. Building on established theoretical concerns and the research possibilities enabled by large social datasets, we propose a framework for mapping information exposure of digitally situated individuals. We argue that from the perspective of an individual's personal communication network, comparable processes of “curation” are undertaken by a variety of actors—not only conventional newsmakers but also individual media users, social contacts, advertisers, and computer algorithms. Detecting the competition, intersection, and overlap of these flows is crucial to understanding media exposure and effects today. Our approach reframes research questions in debates such as polarization, selective and incidental exposure, participation, and conceptual orientations for computational approaches.

Analysis of Range Based Indoor Positioning Techniques for Personal Communication Networks

The subject of the paper is the range---based indoor positioning method, based on the ZigBee physical layer. Some computational problems are also investigated. A proposition for overcoming these problems is presented involving an experiment on the convergence of the computational process. In order to investigate the details of computational process an experiment was planned and carried out. A case study was performed on the basis of this experiment. The behavior of the Least Squares objective function was investigated on the basis of its graphic representation. The graphic representation was formed for both linearized and non-linearized versions of this function. Different methods of minimizing this function were tested. The analysis of the results allowed the best method to be selected for assuring the convergence of the computational process to correct solution.

A Three-Factor Based Remote User Authentication Scheme: Strengthening Systematic Security and Personal Privacy for Wireless Communications

Anonymous remote user authentication plays more and more important role in wireless personal communication networks to guarantee systematic security and personal privacy. However, as promising as it is, security and privacy issues have seriously challenged user experience and system performance in the authentication schemes for a long time. In this paper, we propose a remote user authentication scheme for wireless communication networks. Our proposal employs the personal workstation as a trusted proxy to preserve perfect user privacy, while maintaining system security. It not only provides mutual authentication with key agreement mechanism, but also keeps user' privacy private in a reliable domain. In addition, the technologies of Bluetooth (or Wifi) improve user experience and improve user friendliness in three-factor based authentication schemes. Moreover, our scheme supports flexible user login and security level. Finally, the security proof and performance analysis show that our scheme is more efficient and practical.

Game-based data offloading scheme for IoT system traffic congestion problems

Internet of things (IoT) is seen as another information and industrial wave after the invention of personal computers, the Internet, and mobile communication networks. Especially, IoT/cellular network integration becomes a new service platform for the different kinds of traffic manipulation. However, due to the excessive traffic demands, it is currently facing a severe traffic overload problem. In this paper, we propose a new traffic control scheme based on the data offloading technique. By using the Vickrey-Clarke-Groves (VCG) mechanism and Rubinstein bargaining game model, our data offloading approach can effectively alleviate the IoT traffic congestion while enhancing the quality-of-service (QoS) in cellular network systems. Finally, we show the effectiveness of our proposed scheme through extensive simulations.

A Comparative Study of Prioritized Handoff Schemes with Guard Channels in Wireless Cellular Networks

Mobility management has always been the main challenge in most mobile systems. It involves the management of network radio channel resource capacity for the purpose of achieving optimum quality of service (QoS) standard. In this era of wireless Personal Communication Networks such as Global System for Mobile Communication (GSM), Wireless Asynchronous Transfer Mode (WATM), Universal Mobile Telecommunication System (UMTS), there is a continuous increase in demand for network capacity. In order to accommodate the increased demand for network capacity (radio resource) over the wireless medium, cell sizes are reduced. As a result of such reduction in cell sizes, handoffs occur more frequently, and thereby result in increased volume of handoff related signaling. Therefore, a handoff scheme that can handle the increased signaling load while sustaining the standard QoS parameters is required.This work presents a comparative analysis of four popular developed handoff schemes. New call blocking probability, forced termination probability and throughput are the QoS parameters employed in comparing the four schemes. The four schemes are:RCS-GC,MRCS-GC, NCBS-GC, and APS-GC. NCBS-GChas the leased new call blocking probability while APS-GC has the worst. In terms of forced termination probability, MRCS-GC has the best result, whileRCS-GChas the worst scheme.MRCS-GC delivers the highest number of packets per second while APS-GC delivers the least. These performance metrics are computed by using the analytical expressions developed for these metrics in the considered models in a Microsoft Excel spreadsheet environment. http://dx.doi.org/10.4314/njt.v34i3.24

Police intelligence: connecting-the-dots in a network society

Multi-jurisdictional information sharing is essential for the effective operation of police intelligence. In police intelligence, information can be shared formally via digital information networks or informally via personal social networks. Participant interviews were conducted with 30 intelligence officers in Ontario, Canada, to examine the distinction between, and reliance on, the use of formal information communication technologies (ICTs) versus personal networks to exchange intelligence information. This study found an overreliance on informal personal communication networks to facilitate multi-jurisdictional information sharing. Information shared informally between contacts was perceived to be more current, detailed, reliable and secure. Theoretically, this indicates that a social network framework may be more useful in understanding information flow to ‘connect-the-dots’ rather than the digital information network framework (e.g. fusion centre) traditionally applied. It is argued that future strategies for enhancing information sharing will require greater attention to the role informal social networks perform in facilitating the exchange of intelligence information.

Personal communication networks and their positive effects on online collaboration and outcome quality on Wikipedia

Online collaborative projects have been utilized in a variety of ways over the past decade, such as bringing people together to build open source software or developing the world's largest free encyclopedia. Personal communication networks as a feature do not exist in all collaborative projects. It is currently unclear if a designer's decision to include a personal communication network in a collaborative project's structure affects outcome quality. In this study, I investigated Wikipedia's personal communication network and analyzed which Wikipedia editors are utilizing it and how they are connected to outcome quality. Evidence suggests that people who utilize these networks are more experienced in editing high quality articles and are more integrated in the community. Additionally, these individuals utilize the personal communication network for coordinating and perhaps mentoring editors who edit lower quality articles. The value of these networks is demonstrated by the characteristics of the users who use them. These findings indicate that designers of online collaborative projects can help improve the quality of outcomes in these projects by deciding to implement a personal communication network in their communities.

Circulation and internationalisation of pedagogical concepts and practices in the discourse of education: The Hamburg school reform experiment (1919–1933)

In the context of the international exchange of school reform ideas and concepts, the new schools in Hamburg were recognised as exemplary instances of a revolutionary and forceful reform in the public elementary school systems. Based on studies of transfer and their premise that the transnational transfer of ideas, practices and objects does not occur spontaneously, but requires specific mechanisms of transmission, this contribution explores the circulation and exchange of pedagogical practices and concepts within the discourse of New Education by looking at the example of the Hamburg experimental and community schools (Hamburger Versuchs- und Gemeinschaftsschulen). A key question in this process is how the Hamburg schools could acquire the great international importance they held. The analysis includes both personal and institutional communication networks of the experimental schoolteachers, the international journals and conferences of the New Education Fellowship, school visits and various reports and documentations of the schools produced by foreign visitors. It shows not only the key role that transnational exchange played in the education reform debates of the 1920s, but also offers clues to the cultural patterns and beliefs that influenced the circulation and reception of ideas.

A Comparative Study of Three TDMA Digital Cellular Mobile Systems (GSM, IS-136 NA-TDMA and PDC) Based On Radio Aspect

As mobile and personal communication services and networks involve providing seamless global roaming and improve quality of service to its users, the role of such network for numbering and identification and quality of service will become increasingly important, and well defined. All these will enhance performance for the present as well as future mobile and personal communication network, provide national management function in mobile communication network and provide national and international roaming. Moreover, these require standardized subscriber and identities. To meet these demands, mobile computing would use standard networks. Thus, in this study the researcher attempts to highlight a comparative picture of the three standard digital cellular mobile communication systems: (i) Global System for Mobile (GSM) -- The European Time Division Multiple Access (TDMA) Digital Cellular Standard, (ii) Interim Standard-136 (IS-136) -- The North American TDMA Digital Cellular Standard (D-AMPS), and (iii) Personal Digital Cellular (PDC) -- The Japanese TDMA Digital Cellular Standard.

A dynamic overlay approach for mobility maintenance in personal communication networks

The location predictions of the nodes are the key issues in mobile environment. The applications like video sharing, voice over IP and other online applications offer better results with stable nodes. In mobile scenario, connectivity and quality of service are critical issues. To overcome these issues dynamic overlay approaches are proposed in this work namely, 1.Mobile Peers-Unstructured, 2.Structured Peer, 3.MANET Structure and 4.Mesh Backbone. These structures are obtained from the network, during the requirement of connectivity or quality of service. The performance of the proposed methods are analyzed in stable and mobile conditions by analyzing power consumption, hop stretch, packet delivery ratio, network life time and other QoS parameters.

An Efficient Call Admission Control Scheme for Handling Handoffs in Wireless Mobile Networks

Personal Communication Network (PCN) is an emerging wireless network that promises many new services for the telecommunication industry. The proliferation of demands for extending wireless services to integrated services, which supports the transmission of data and multimedia information, has resulted in the need for broadband wireless systems that are able to provide service capabilities similar to those of wire line networks. The ATM cell- relay paradigm is one possible approach to provide broadband wireless transmission with PCN’s using the ATM switching networks for interconnection of PCN cells. As traffic in these mobile cellular networks increases,Handoffs will become an increasingly important issue . As cell sizes shrink to accommodate an increasingly large demand of services, newer more efficient handoff schemes need to be used. In this paper, the authors describe the use of novel and efficient data structure which dynamically allocates guard channel for handoffs and introduces the concept of channel borrowing strategy. The proposed scheme allocates the guard channels forhandoff requests dynamically, based on the traffic load for certain time period. A new originating call in the cell coverage area also uses these guard channels if they are unused. Our basic idea is to allow Guard channels to be shared between new calls an d handoff calls. This approach maximizes the channel utilization. The simulation results prove that the channel borrowing scheme improves the overall throughput.

Research on Detection Method of Direct Sequence Spread Spectrum Signals

Direct Sequence Spread Spectrum (DSSS) Communication has been widely applied in Personal communications network, WLAN, the third-generation mobile communications, satellite communications systems, military tactics communications and etc, thanks to the DSSS signals’ strong anti-interference ability, low probability of being intercepted and outstanding multi-access communication ability. At the same time, the Problem of estimating Signals has been of great research interest with the development of wind-band weak signals processing and communication antagonism. A new effective detection method of DSSS is proposed, combined the method of wavelet transformation with cycle spectral correlation approach, from the perspective of jamming in non-cooperation condition, and a simulation result of signals--BPSK is given.