Webology
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1735-188x, 1735-188x

Webology ◽  
2021 ◽  
Vol 18 (2) ◽  
pp. 1365-1378
Author(s):  
Wed Kadhim Oleiwi ◽  
Alharith A. Abdullah

Abstract Software-Defined Networks (SDN) It is a centralized control structure in the network that opens up new possibilities that did not exist before. The significant characteristic of this innovative approach is the focus on the capability of proposing networks of high dynamicity and programmability to transform the intelligence of underlying systems to the networks via controllers. The main issue of the SDN approach is found in its security, mainly due to its central-controlling architecture since the entire network is controlled from a central point. This makes it very vulnerable to single-point failure. In this paper, a fully Distributed SDN controller is proposed for solving the one point failure which exists within the single SDN controller. In general, the concept involves forming cluster of distributed controllers whereby each controller controls its domain and can thereby share the load within the network. The experimental results of the proposed system show an increase and enhancement in the performance of the network. The single-point failure issues have been overcome. The throughput of the proposed system increased with 20% while the packet loss rate was minimize with 33%.


Webology ◽  
2021 ◽  
Vol 18 (2) ◽  
pp. 1379-1391
Author(s):  
Hayder A. Jawdhari ◽  
Alharith A. Abdullah

Blockchain is one of the technologies provided by the global distribution of computing power. Simply put, the blockchain is the digital ledger in which transactions are recorded. It all started with a desire to see a new form of security system for transferring confidential files. It aims to achieve many goals like decreasing the process time for transferring files to the other party, and reducing the overall expenses as the files are only transferred across the blockchain network with no need for the files to be uploaded and downloaded to the drive. More effective applications have the ability to share files via the technology of Blockchain. The great challenge is to build a private blockchain environment to send files and distribute them securely between parties, such as military institutions and others. In this paper, a private blockchain is built to overcome the side of the security through a secured file-sharing network. This private Blockchain can be utilized at various institutions. A high scale of security is obtained through using an important algorithm that takes into consideration a critical part of the field of cryptography to robustly encrypt the files. The latter ensures that no individual except for the receiver has the ability to access the files. As well, a sufficient speed was obtained when transferring the files, as compared to Ethereum with FTP. Finally, smart contracts have been designed to suit the transfer of files between nodes.


Webology ◽  
2021 ◽  
Vol 18 (SI02) ◽  
pp. 125-139
Author(s):  
Jamshid Sh. Tukhtabaev ◽  
Barno R. Tillaeva ◽  
Barno S. Razakova ◽  
Gulmira N. Ismagulova ◽  
Islom A. Achilov

This article analyzes the content of the concept of labor productivity in textile enterprises, the factors influencing its increase, using the methods of "correlation" and "regression" analysis, as well as the forecast indicators of labor productivity.


Webology ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 01-18
Author(s):  
Hayder Rahm Dakheel AL-Fayyadh ◽  
Salam Abdulabbas Ganim Ali ◽  
Dr. Basim Abood

The goal of this paper is to use artificial intelligence to build and evaluate an adaptive learning system where we adopt the basic approaches of spiking neural networks as well as artificial neural networks. Spiking neural networks receive increasing attention due to their advantages over traditional artificial neural networks. They have proven to be energy efficient, biological plausible, and up to 105 times faster if they are simulated on analogue traditional learning systems. Artificial neural network libraries use computational graphs as a pervasive representation, however, spiking models remain heterogeneous and difficult to train. Using the artificial intelligence deductive method, the paper posits two hypotheses that examines whether 1) there exists a common representation for both neural networks paradigms for tutorial mentoring, and whether 2) spiking and non-spiking models can learn a simple recognition task for learning activities for adaptive learning. The first hypothesis is confirmed by specifying and implementing a domain-specific language that generates semantically similar spiking and non-spiking neural networks for tutorial mentoring. Through three classification experiments, the second hypothesis is shown to hold for non-spiking models, but cannot be proven for the spiking models. The paper contributes three findings: 1) a domain-specific language for modelling neural network topologies in adaptive tutorial mentoring for students, 2) a preliminary model for generalizable learning through back-propagation in spiking neural networks for learning activities for students also represented in results section, and 3) a method for transferring optimised non-spiking parameters to spiking neural networks has also been developed for adaptive learning system. The latter contribution is promising because the vast machine learning literature can spill-over to the emerging field of spiking neural networks and adaptive learning computing. Future work includes improving the back-propagation model, exploring time-dependent models for learning, and adding support for adaptive learning systems.


Webology ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 96-109
Author(s):  
Ida Bagus Separsa Kusuma ◽  
Agoes Ganesha Rahyuda

PT Pegadaian (Persero) is one of financial institution in the form of channeling funds to the public on the basis of the law of pawning. PT Pegadaian (Persero) Regional Office VII Denpasar in 2018 - 2020 has a low KPI value in the last 3 years compared to other regional offices throughout Indonesia. The decline in employee performance can be influenced by several factors, including leadership, innovative behavior and creative self-efficacy. This study was conducted to determine the role of creative self-efficacy in mediating the effect of transformational leadership and innovative behavior on employee performance. The sampling technique used was proportionate random sampling as many as 227 respondents were employees of PT Pegadaian (Persero) Regional Office VII Denpasar. Data were analyzed using Confirmatory Factor Analysis (CFA), Structural Equation Modeling (SEM) based on Partial Least Square (PLS). The results shows creative self-efficacy, transformational leadership and innovative behavior have a positive and significant effect on employee performance (t statistic > 1.96). The results of the mediation analysis showed that creative self-efficacy was not able to mediate transformational leadership on employee performance (18.3%) but was able to partially mediate the effect of innovative behavior on employee performance (41.7%). This research is expected to be empirical evidence for future research and to be able to enrich the theory of social exchange, transformational leadership, innovative behavior and creative self-efficacy. In addition, this research is expected to provide information as a leader in improving employee performance in the PT Pegadaian (Persero) Regional Office VII Denpasar.


Webology ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 83-95
Author(s):  
Israa Shakir Seger ◽  
Israa M. Hayder ◽  
Hussain A. Younis ◽  
Hameed Abdul-Kareem Younis

In recent years, the chess game has begun to develop successful programming solutions. Computers were programmed to play chess in the middle of the twentieth century. Computer skills have become better and higher than the skills of chess players in the world, and from here this study has made it possible to find the optimal solution for the four square pieces in the form of a letter (L) without repetition and quick access to fill the sites and voids and to complete the entire area. It is our task to cover a (2n×2n) Chessboard with L-shaped tiles each tile is a (2×2) square with a (1×1) square removed from one corner. We are working to cover the Chessboard in such a way that there is a single 1×1 box left in the ‘corner’ of the Chessboard (by the 'corner' we mean one corner of the box should be uncovered). In this task, we will solve this problem with three approaches, the C programming approach, the second by dividing and conquering approach and the last by a greedy method approach. Three algorithms were used and a comparison was made between them, and the fastest method was achieved by a greedy method, with eight cases comparing one and four cases, respectively.


Webology ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 37-50
Author(s):  
Wiji Dewobroto ◽  
Umar Nimran ◽  
Zainul Arifin ◽  
Edy Yulianto

Purpose: The purpose of this study is to apply SEM analysis to WarpPLS analysis and translate Customer Value and Customer Trust as Mediation, especially for PT. Nusa Prima Logistics. Design / Method: This study was divided into 3: exploratory research, descriptive research, and explanatory research. The quantitative approach of this study uses a survey method by taking samples from the population. This is a latent variable that is measured using a survey tool in the form of a survey. The survey was conducted by distributing questionnaires to the respondents. This research was conducted at PT. Nusa Prima Logistics Terminal Teluk Lamong by taking primary data, in the form of assessments or perceptions from respondents, so a survey was conducted by submitting a questionnaire directly to PT. Nusa Prima Logistics Terminal Teluk Lamong as 194 respondents. Quantitative data analysis was performed using Structural Equation Modeling (SEM) to answer the research hypothesis. Finding: Flexibility is very influential in increasing Customer Retention so to develop Customer Retention, it is necessary to increase Flexibility, Customer Value and Customer Trust Originality: The novelty in this research lies not yet obtained about the role and position of Customer Value and Customer Trust as mediation that affect Customer Retention.


Webology ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 123-132
Author(s):  
Jeperson Hutahaean ◽  
Seri Suriani ◽  
Supriy anto ◽  
Harma yani ◽  
Muhammad Amin ◽  
...  

The implementation of decision support system tools in providing decision support for management is absolutely necessary. In its application, this aims to make the decision effective so that the decisions produced can be objective. This research discusses employee performance appraisal by implementing a decision support system. Many methods of decision support systems that can be used to rank, but in this study, the authors use the ranking method known as Simple Additive Weighting (SAW). The SAW method works by summing the weighted attributes that are interrelated. This method is quite simple and is able to provide the right decisions for employees who have the best performance to be recommended in job promotions. In this research, assessment attributes are used, namely education, experience, expertise, collaboration, work quality, and discipline. The final results show that employees on behalf of Ferdinal have the highest value with a value of 0.850.


Webology ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 19-36
Author(s):  
Drina Intyaswati

This study tries to fill the knowledge theory gap on the impact of social media use in political discourse. This research examines social media's performance in political learning where it does not exist as part of classroom learning. Social media is differentiated between activities that do not involve political interaction directly and discussion with other users. This study develops a cross-sectional survey on undergraduate college students' representatives of the five biggest campuses in Bandung, Indonesia. A total of 977 students filled questionnaires. The results show political discussion through social media networks providing students' political learning. The more students discuss related politics through social media, the higher their level of political awareness becomes. Social media activities do not impact political learning, where these activities do not involve discussion with other users. This study shows that students obtain political learning through political discussion through their networks, not just through social media activities. Political learning through social media requires discussion related to politics. Besides, sex, age, and expenditure also affect students' political knowledge acquisition. The results have implications for conducting studies on specific platforms to confirm social media activities' impact according to each platform's characteristics.


Webology ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 133-141
Author(s):  
Hamid Reza Saeidnia ◽  
Ali Ghorbi ◽  
Marcin Kozak ◽  
Shadi Abdoli

Application Programming Interfaces (APIs) are software tools that help different programs work together. APIs can improve an organization's presence on the Web with tools that integrate various useful, popular programs. This study aimed to identify appropriate web-based APIs used by the most popular public library websites for presentation on Iranian public libraries’ websites. For this purpose, we conducted this study in two stages: In stage one, Web APIs were identified by reviewing the websites of the top public libraries in the world. Then, in stage two, using the obtained results, important Web APIs were selected utilizing experts' opinions (the heuristic method). In stage one, the 30 Web APIs in two categories were identified: 10 public Web APIs and 20 private Web APIs. Then, in stage two, 7 public APIs and 17 private Web APIs for these websites were selected, based on expert analysis. The results of this study can be used to improve the design of public library websites and enhance the communication of such websites' presence on the Web.


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