scholarly journals A survey of performance models for LTE-WiFi wireless heterogeneous networks

2019 ◽  
pp. 18-25
Author(s):  
Martha María Hernández-Ochoa ◽  
Alfredo Netzahualcoyotl Torres-Lopez
Keyword(s):  
Heterogeneous Networks ◽  
Performance Metrics ◽  
Research Problem ◽  
Communication Process ◽  
Network Communication ◽  
Performance Models ◽  
Transmission Process ◽  
Wireless Heterogeneous Networks ◽  
Research Questions

Nowadays, the network traffic has increased exponentially due to amount of information and number of users which are connected to Heterogeneous Networks (HetNets) in this case we focus on LTE-WiFi technologies. This is an important issue that need to solve for an efficient network communication process end to end. The aim of this article is to present the-state-of-theart about performance models for LTE-WiFi HetNets and a classification of key performance metrics which help to analyze HetNets behaviour. The article concludes with a methodology that will be applied later for this research problem, as well as opened research questions. We believe, that apply our methodology using accurate and suitable models in HetNets the transmission process will have a fairness traffic when both networks coexist.

scholarly journals Selected Aspects of the Security of the Process Data Transmission in the Distributed Control System

2016 ◽  
Vol 37 (1) ◽  
pp. 231-252
Author(s):  
Marcin Bednarek ◽  
Tadeusz Dąbrowski ◽  
Tomasz Wawer
Keyword(s):  
Control System ◽  
Distributed Control ◽  
Data Transmission ◽  
Hash Function ◽  
Communication Process ◽  
Distributed Control System ◽  
Process Data ◽  
Process Diagnosis ◽  
Transmission Process

Abstract Communication between the process stations of the distributed control system is carried out. By the supervision and therapeutic systems of the stations communication process diagnosis is performed. Supervision and therapeutic systems are responsible for the security of transmitted data. The security is considered in this article mainly in the aspect of resistance to external destructive factors on the data transmission process. It is assumed that the transmission security can be provided by mechanisms protecting the integrity of the transmitted data. Correctness of the data is controlled by using one-way hash function calculated on the basis of the transmitted value variable and also is attached to the transmitted data. This allows to maintain the integrity of the transmitted process data. A solutions using one-way hash function to protection of the transmission before changing message contents (caused by eg. intruder interference) are proposed in the article.

Enhanced Bat Algorithm for Resource Allocation in Wireless Heterogeneous Networks

2021 ◽  
Author(s):  
Liwei Yang ◽  
Furong Zhu ◽  
Xinlai Liu ◽  
Wencong Lai ◽  
Wenyi Li ◽  
...  
Keyword(s):  
Resource Allocation ◽  
Heterogeneous Networks ◽  
Bat Algorithm ◽  
Wireless Heterogeneous Networks

Research on Network Communication Model of Intelligent Ship Handling Simulator

2011 ◽  
Vol 97-98 ◽  
pp. 787-793 ◽  
Author(s):  
Shen Hua Yang ◽  
Guo Quan Chen ◽  
Xing Hua Wang ◽  
Yue Bin Yang
Keyword(s):  
Mathematical Model ◽  
Degrees Of Freedom ◽  
Communication Process ◽  
Network Communication ◽  
Communication Model ◽  
Test Results ◽  
Six Degrees Of Freedom ◽  
Model Based ◽  
Hydraulic Servo ◽  
Ship Handling

Due to the target ship in the traditional ship handling simulator have not the ability to give way to other ships automatically to avoid collision, this paper put forward a new idea that bringing the hydraulic servo platform, six degrees of freedom ship mathematical model, the actual traffic flow, researching achievement of automatic anti-collision in research of the new pattern ship handling simulator, and successfully develop the Intelligent Ship Handling Simulator(ISHS for short). The paper focuse on the research on the network communication model of ISHS. We took the entire simulator system as three relatively independent networks, proposed a framework of communication network that combined IOCP model based on TCP with blocking model based on UDP, and gave the communication process and protocols of system. Test results indicate that this is an effective way to improve the ownship capacity of ship handling simulator and meet the need of multi-ownship configuration of desktop system of ship handling simulator.

Application of semantic technologies in bibliographic databases

2019 ◽  
Vol 38 (1) ◽  
pp. 113-137
Author(s):  
Tsvetanka Georgieva-Trifonova ◽  
Kaloyan Zdravkov ◽  
Donika Valcheva
Keyword(s):  
Literature Review ◽  
Systematic Literature Review ◽  
Keyword Search ◽  
Bibliographic Databases ◽  
Future Research ◽  
Semantic Technologies ◽  
Scientific Review ◽  
Content Type ◽  
Research Questions

Purpose The purpose of this paper is to summarize the current state of the existing research on the application of semantic technologies in bibliographic databases by providing answers to a set of research questions resulting from a systematic literature review. Design/methodology/approach The present study consists of conducting a systematic literature review of research works related to the application of semantic technologies in bibliographic databases. A manual keyword search is performed in known academic databases. As a result, a total of 78 literature sources are identified as related to the topic and included in the review. From the selected literature sources, information is extracted, which is then summarized and analyzed according to previously defined research questions and finally reported. Besides, a framework is defined to classify literature sources found and collected as a result of the study. The main criteria, according to which the classification is performed, are the used semantic technology and the research problem for which semantic technologies are applied in bibliographic databases. The classification of the publications is verified by each author independently of others. Findings The conducted systematic scientific review establishes that the evolution of semantic technologies sets a period of increased interest in the researchers, as a result of which the advantages of using them for bibliographic descriptions are examined and practically confirmed. After defining semantic models for bibliographic descriptions and approaches to transform existing bibliographic data into their correspondence, the research interest is directed at their comparison, collation; enrichment to facilitate search and retrieval of useful information. Possible perspectives for future research are outlined, which mainly relate to the complete use of the created data sets and their transformation into knowledge repositories. Originality/value Despite the increasing importance of the semantic technologies in various areas, including the bibliographic databases, there is a lack of comprehensive literature review and classification of literature sources relevant to this topic. The detailed study proposed in the present paper supports introducing with the existing experience in the application of semantic technologies in bibliographic databases, as well as facilitates the discovery of trends and guidelines for future research.

scholarly journals Unsur Budaya Material dalam Novel Entrok Karya Okky Madasari

ATAVISME ◽  
2019 ◽  
Vol 22 (2) ◽  
pp. 200-216
Author(s):  
Miftahurohmah Hikmasari ◽  
Wening Sahayu
Keyword(s):  
Material Culture ◽  
Research Problem ◽  
Literary Work ◽  
Aesthetic Value ◽  
Literary Works ◽  
Descriptive Research ◽  
The Third ◽  
Qualitative Descriptive ◽  
The Aesthetic

This research aims to classify and describe the material culture elements contained in Okky Madasari’s novel Entrok. The research problem includes the classification of material culture elements which only exist in Indonesia, and most of them are related to Javanese culture. This research was a qualitative descriptive research. The data were in the form of words and phrases obtained from Okky Madasari’s Entrok. The result showed that there were six elements of material culture. The most commonly found material culture element was food, the second was house, the third was clothes, and the least found were vehicle, daily equipment, and art tool. The use of material culture elements in literary works, such as novel, not only improves the aesthetic value of the work, but also can be used as a media of education, so that the literary work enthusiasts can recognize better and are able to preserve the cultures in Indonesia.

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