scholarly journals Graph Metrics for Network Robustness—A Survey

Mathematics ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 895
Author(s):  
Milena Oehlers ◽  
Benjamin Fabian
Keyword(s):  
Business Processes ◽  
Network Robustness ◽  
Global Network ◽  
Internet Research ◽  
The Internet ◽  
Conceptual Tool ◽  
Internet Topology ◽  
Graph Metrics ◽  
Tool Set ◽  
Topological Robustness

Research on the robustness of networks, and in particular the Internet, has gained critical importance in recent decades because more and more individuals, societies and firms rely on this global network infrastructure for communication, knowledge transfer, business processes and e-commerce. In particular, modeling the structure of the Internet has inspired several novel graph metrics for assessing important topological robustness features of large complex networks. This survey provides a comparative overview of these metrics, presents their strengths and limitations for analyzing the robustness of the Internet topology, and outlines a conceptual tool set in order to facilitate their future adoption by Internet research and practice but also other areas of network science.

scholarly journals Internet methodology - difficulties and opportunities offered by the Internet in conducting research. Analysis of the phenomenon in the light of the literature on the subject

E-methodology ◽  
2021 ◽  
Vol 7 (7) ◽  
pp. 9-16
Author(s):  
KINGA FRĄCZKOWSKA
Keyword(s):  
Rapid Development ◽  
Psychological Research ◽  
Global Network ◽  
Internet Research ◽  
The Internet ◽  
Interesting Phenomenon ◽  
Spider Web ◽  
Advantages And Disadvantages ◽  
The Subject ◽  
Motivation To Participate

Aim. A theoretical review of the opportunities and functions of the application enabling the creation of internet surveys. Assessment of their use in accordance with own opinion and the analysis of the literature on the subject.Methods. Analysis of the literature on the subject and a summary of the description of the survey conducted on the basis of a questionnaire examining the interesting phenomenon of e-methodology and an opinion on distance learning. The authors analysed the advantages and disadvantages of the tools used in online research. The aforementioned experiences of the researchers refer to the experience gained during research on e-methodology.Results and conclusion. The interest in this medium as a tool for social and psychological research has been growing rapidly in the last ten years. The very rapid development of technology that has taken place during the COVID-19 pandemic allowed us to easilyconduct a research survey using the network, which can easily replace any labour-intensive data collection through inquiry. In addition, many different tools and techniques have been created that use the so-called “Global spider web” in conducting my own research. Theresearcher abandons direct contact with the respondent and devotes himself to the analysis of the phenomenon that interests him by analysing the given Internet environment, social groups that express themselves on a given topic or share their work on specifi c problems. However, the global network is not only a chance for good, innovative approach to research, but also threats and related difficulties. One of the most important weaknesses of the network is the fact that we can never be sure who is on the other end of the computer.Cognitive value. Presentation of new ways of conducting scientific research via the network, presenting my own analysis of the advantages and disadvantages of the e-methodology phenomenon. Analysing the phenomenon of internet methodology, welearn that the tendency to participate in internet research is increasing. However, motivation to participate in internet research is not always sufficient, as mentioned by many researchers. There are many ways to infl uence the attractiveness of the research and the motivation to participate in the research. Thanks to this article, we also learn that it is still necessary to conduct further methodological research on increasing the effectiveness of Internet research and minimising errors associated with it. The issues presented in this article reflect the current methodological knowledge. We can predict that as the Internet grows and new technical opportunities emerge - such as video-enabled applications, among others - new methodological issues will arise that may be of interest to researchers.

ROPO Effect in Gender- Generational Characteristics

2020 ◽  
Vol 11 (1) ◽  
pp. 43-43
Author(s):  
Radovan Bačík ◽  
Mária Oleárová ◽  
Martin Rigelský
Keyword(s):  
Association Analysis ◽  
Search Engines ◽  
Product Information ◽  
Customer Behavior ◽  
Internet Research ◽  
The Internet ◽  
Significant Progress ◽  
Customer Reviews ◽  
Online Purchase ◽  
Brick And Mortar

The development of the Internet and the current technologies have contributed to a significant progress in the consumer shopping process. Today, shopping decisions are more intuitive and much easier to make. E-shops, search engines, customer reviews and other similar tools reduce costs of searching for products or product information, thus boosting the habit of searching for information on the Internet - "Research Shopper Phenomenon" (Verhoef et al. 2007). According to Verhoef et al. (2015), this phenomenon leads to a phenomenon where consumers search for product information using one channel (Internet) and then make a purchase through another channel (brick-and-mortar shop). Heinrich and Thalmair (2013) refer to this effect as the "research online, purchase offline" or "ROPO" effect for short. This phenomenon can also be observed in reverse. Keywords: customer behavior, research online – purchase offline, association analysis

scholarly journals Mind games: A temporal sentiment analysis of the political messages of the Internet Research Agency on Facebook and Twitter

2021 ◽  
pp. 146144482110143
Author(s):  
Soyoung Park ◽  
Sharon Strover ◽  
Jaewon Choi ◽  
MacKenzie Schnell
Keyword(s):  
African American ◽  
Temporal Dynamics ◽  
Negative Emotion ◽  
American Identity ◽  
Internet Research ◽  
The Internet ◽  
Message Content ◽  
Political Messages ◽  
African American Identity ◽  
2016 Election

This study examines the temporal dynamics of emotional appeals in Russian campaign messages used in the 2016 election. Communications on two giant social media platforms, Facebook and Twitter, are analyzed to assess emotion in message content and targeting that may have contributed to influencing people. The current study conducts both computational and qualitative investigations of the Internet Research Agency’s (IRA) emotion-based strategies across three different dimensions of message propagation: the platforms themselves, partisan identity as targeted by the source, and social identity in politics, using African American identity as a case. We examine (1) the emotional flows along the campaign timeline, (2) emotion-based strategies of the Russian trolls that masked left- and right-leaning identities, and (3) emotion in messages projecting to or about African American identity and representation. Our findings show sentiment strategies that differ between Facebook and Twitter, with strong evidence of negative emotion targeting Black identity.

scholarly journals Identification and Quantification of Node Criticality through EWM–TOPSIS: A Study of Hong Kong’s MTR System

2021 ◽  
Author(s):  
Yifan Zhang ◽  
S. Thomas Ng
Keyword(s):  
Hong Kong ◽  
Public Transportation ◽  
Early Stage ◽  
Network Robustness ◽  
Global Network ◽  
Practical Significance ◽  
Topsis Method ◽  
Urban Resilience ◽  
Network Efficiency ◽  
Entropy Weight

AbstractPublic transport networks (PTNs) are critical in populated and rapidly densifying cities such as Hong Kong, Beijing, Shanghai, Mumbai, and Tokyo. Public transportation plays an indispensable role in urban resilience with an integrated, complex, and dynamically changeable network structure. Consequently, identifying and quantifying node criticality in complex PTNs is of great practical significance to improve network robustness from damage. Despite the proposition of various node criticality criteria to address this problem, few succeeded in more comprehensive aspects. Therefore, this paper presents an efficient and thorough ranking method, that is, entropy weight method (EWM)–technology for order preference by similarity to an ideal solution (TOPSIS), named EWM–TOPSIS, to evaluate node criticality by taking into account various node features in complex networks. Then we demonstrate it on the Mass Transit Railway (MTR) in Hong Kong by removing and recovering the top k critical nodes in descending order to compare the effectiveness of degree centrality (DC), betweenness centrality (BC), closeness centrality (CC), and the proposed EWM–TOPSIS method. Four evaluation indicators, that is, the frequency of nodes with the same ranking (F), the global network efficiency (E), the size of the largest connected component (LCC), and the average path length (APL), are computed to compare the performance of the four methods and measure network robustness under different designed attack and recovery strategies. The results demonstrate that the EWM–TOPSIS method has more obvious advantages than the others, especially in the early stage.

Sistem Informasi Penjualan Online di Universitas Katolik Santo Thomas (Tokounika) Berbasis Web Menggunakan Metode Feature Driven Development

2021 ◽  
pp. 63-71
Author(s):  
Andy Paul Harianja ◽  
Iwada Grawilser Talunohi
Keyword(s):  
Information Technology ◽  
Information System ◽  
Information Systems ◽  
Communication Networks ◽  
Business Processes ◽  
Business Students ◽  
The Internet ◽  
Online Sales ◽  
Catholic University ◽  
Business Entities

The development of the field of information technology is very rapid, therefore many companies, industries, shops and other business entities are using information systems to increase their business. Online sales information systems are used to carry out business processes such as distribution, sales, purchasing, marketing of goods or services by using communication networks and the internet. Online sales information systems can help people who do not have a place or shop to carry out their business. Students in this case, especially at the Catholic University of Santo Thomas, are an opportunity to take advantage of this facility in carrying out their business, especially if they do not have a place or shop to carry out their business. For this reason, an online sales information system was built that can be accessed through the website.

scholarly journals BrainNetVis: An Open-Access Tool to Effectively Quantify and Visualize Brain Networks

2011 ◽  
Vol 2011 ◽  
pp. 1-12 ◽  
Author(s):  
Eleni G. Christodoulou ◽  
Vangelis Sakkalis ◽  
Vassilis Tsiaras ◽  
Ioannis G. Tollis
Keyword(s):  
Open Access ◽  
Brain Network ◽  
Global Network ◽  
Control Group ◽  
Network Modelling ◽  
Network Information ◽  
Network Measures ◽  
Graph Metrics ◽  
Network Metrics ◽  
The Brain

This paper presents BrainNetVis, a tool which serves brain network modelling and visualization, by providing both quantitative and qualitative network measures of brain interconnectivity. It emphasizes the needs that led to the creation of this tool by presenting similar works in the field and by describing how our tool contributes to the existing scenery. It also describes the methods used for the calculation of the graph metrics (global network metrics and vertex metrics), which carry the brain network information. To make the methods clear and understandable, we use an exemplar dataset throughout the paper, on which the calculations and the visualizations are performed. This dataset consists of an alcoholic and a control group of subjects.

scholarly journals Digitalization trend in business

2021 ◽  
Vol 284 ◽  
pp. 07008
Author(s):  
Oksana Pirogova ◽  
Nadezhda Savelyeva ◽  
Tatiana Timkina
Keyword(s):  
Business Processes ◽  
Banking Sector ◽  
Development Trend ◽  
The Internet ◽  
Service Model ◽  
Software Products ◽  
Market Participants ◽  
Digital Services ◽  
Commodity Money ◽  
Patterns Of Behavior

The aftermath of the pandemic in 2020 shocked the country’s economy, but at the same time, the desire to keep the business allowed, in record time, to completely rebuild the usual patterns of behavior in the implementation of business processes across all sectors of the economy. The inability to go to work, solve everyday issues, carry out a commodity-money exchange, allowed the remote service model to burst so rapidly. The construction of a mechanism for the formation of work on the basis of electronic platforms, software products, Internet sources made it possible to form a single development trend - digitalization. This process is inextricably linked with the Internet, the digitization of the actions of all market participants. In this article, using the banking sector as an example, the main problems of modern digital services are considered, based on which the main directions of innovation are put forward, as well as promising areas of investment are substantiated.

STRATEGIC INTERACTION OF PROVIDERS FOR DIFFERENTIATED INTERNET SERVICES

2021 ◽  
Vol 6 ◽  
pp. 102-113
Author(s):  
Alexey Gaivoronski ◽  
◽  
Vasily Gorbachuk ◽  
Maxim Dunaievskiy ◽  
◽  
...  
Keyword(s):  
Service Providers ◽  
Network Capacity ◽  
Global Network ◽  
High Price ◽  
The Internet ◽  
Internet Services ◽  
Net Neutrality ◽  
Internet Service Providers ◽  
Video Content ◽  
Internet Service

As computing and Internet connections become general-purpose technologies and services aimed at broad global markets, questions arise about the effectiveness of such markets in terms of public welfare, the participation of differentiated service providers and end-users. Motorola’s Iridium Global Communications project was completed in the 1990s due to similar issues, reaching the goal of technological connectivity for the first time. As Internet services are characterized by high innovation, differentiation and dynamism, they can use well-known models of differentiated products. However, the demand functions in such models are hyperbolic rather than linear. In addition, such models are stochastic and include providers with different ways of competing. In the Internet ecosystem, the links between Internet service providers (ISPs) as telecommunications operators and content service providers are important, especially high-bandwidth video content providers. As increasing bandwidth requires new investments in network capacity, both video content providers and ISPs need to be motivated to do so. In order to analyze the relationships between Internet service providers and content providers in the Internet ecosystem, computable models, based on the construction of payoff functions for all the participants in the ecosystem, are suggested. The introduction of paid content browsing will motivate Internet service providers to invest in increasing the capacity of the global network, which has a trend of exponential growth. At the same time, such a browsing will violate the principles of net neutrality, which provides grounds for the development of new tasks to minimize the violations of net neutrality and maximize the social welfare of the Internet ecosystem. The models point to the importance of the efficiency of Internet service providers, the predictability of demand and the high price elasticity of innovative services.

Web-Based Cad Tools for a Networked Manufacturing Service

1998 ◽  
Author(s):  
Fu-Chung F. Wang ◽  
Paul K. Wright
Keyword(s):  
New Product Development ◽  
Design Tool ◽  
Internet Technology ◽  
Machining Process ◽  
Global Network ◽  
The Internet ◽  
Distributed Design ◽  
Cad Tools ◽  
Web Based ◽  
Design And Manufacturing

Abstract New techniques in Information Technology are now changing not only our daily life, but also the professional practice of product design and manufacturing for new product development. Internet technology in particular opens up another domain for building future CAD/CAM environments. This environment will be a global, network-centric environment with various members providing different software tools, manufacturing facilities, and analysis services for distributed design and fabrication. In this paper, we first briefly describe a vision and current development in a distributed design and manufacturing environment. The paper then emphasizes how current CAD tools will evolve to facilitate the distributed design and fabrication process. In particular, the development of a set of Web-based design tools for fabricating parts using a machining process via the Internet is presented. Experiments on machining 2-1/2 D and freeform parts through this Java-based design tool have shown the feasibility for a networked machining service via the Internet.

Teaching, Learning and Multimedia

2005 ◽  
pp. 60-72 ◽  
Author(s):  
Loreen M. Butcher-Powell
Keyword(s):  
Student Learning ◽  
Teaching And Learning ◽  
Theoretical Framework ◽  
Streaming Video ◽  
Internet Research ◽  
The Internet ◽  
Student Centered ◽  
Web Based ◽  
Teaching Learning ◽  
Almost All

“We must not forget that almost all teaching is Multimedia” (Schramm, p.37). Today, the magnetism of multimedia is clearly oblivious via the use of streaming video, audio clips, and the Internet. Research has shown that the use of multimedia can aid in the comprehension and retention of student learning (Cronin & Myers, 1997; Large Behesti, Breulex & Renaud, 1996; Tennenbaum, 1998). As a result, more educators are utilizing Web-based multimedia materials to augment instruction online and in the classroom. This chapter provides a theoretical framework for transforming Student Centered Discussion (SCD), a traditional based pedagogy strategy, to a new multimedia pedagogy SCD strategy. The new multimedia SCD pedagogy represents a new way of teaching and learning. As a result, positive responses and feedback have been collected from students in their ability to interpret facts, compare and contract material, and make inferences based on recall of information previously presented or assigned in article readings.

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