scholarly journals Open-Source tools: Incidence in the wireless security of the Technical University of Babahoyo

Author(s):  
Joffre León-Acurio ◽  
Alfredo Vite ◽  
Carlos Sisa ◽  
Luis Bastidas Zambrano ◽  
Alex Santamaría Philco

Computer security is a fundamental part of an organization, especially in Higher Education institutions, where there is very sensitive information, capable of being vulnerable by diffeerent methods of intrusion, the most common being free access through wireless points. The main objective of this research is to analyze the impact of the open source tools in charge of managing the security information of the wireless network, such as OSSIM, a set of active and passive components used to manage events that generate tra c within the network. net. This research exposes the use of free software as a viable option of low cost to solve the problems that a ict student sta , such as lack of access to academic services, problems of wireless interconnectivity, with the purpose to restore confidence in students in the Use of the services offered by the institution for research-related development, guaranteeing free and free access to the internet. The level of dissatisfaction on the part of the students con rms the problem presented at the Technical University of Babahoyo, thus confirming the positive influence of the Open-Source tools for the institution’s wireless security.

2019 ◽  
Vol 109 (6) ◽  
pp. 2294-2332 ◽  
Author(s):  
Yuyu Chen ◽  
David Y. Yang

Media censorship is a hallmark of authoritarian regimes. We conduct a field experiment in China to measure the effects of providing citizens with access to an uncensored internet. We track subjects’ media consumption, beliefs regarding the media, economic beliefs, political attitudes, and behaviors over 18 months. We find four main results: (i) free access alone does not induce subjects to acquire politically sensitive information; (ii) temporary encouragement leads to a persistent increase in acquisition, indicating that demand is not permanently low; (iii) acquisition brings broad, substantial, and persistent changes to knowledge, beliefs, attitudes, and intended behaviors; and (iv) social transmission of information is statistically significant but small in magnitude. We calibrate a simple model to show that the combination of low demand for uncensored information and the moderate social transmission means China’s censorship apparatus may remain robust to a large number of citizens receiving access to an uncensored internet. (JEL C93, D72, D83, L82, L86, L88, P36)


2019 ◽  
Vol 37 (6) ◽  
pp. 1022-1039 ◽  
Author(s):  
Nur Ahammad

Purpose This paper aims to explain the implementation procedure of DSpace at the Library of Independent University, Bangladesh. This paper shows how DSpace is promoting open educational resources (OER) movement and demonstrates the ease of implementing DSpace in an institution. Moreover, the purpose of this paper is to encourage library professionals to participate in the OER movement by implementing DSpace in their libraries. Design/methodology/approach The requirements for implementing DSpace have been shown in this paper. It also describes the system model of an academic repository (DSpace)/digital library (DL). In addition, the paper describes the legal issues for submitting an item in DSpace and self-submission process of an item as well as shows impact of DSpace on OER. Findings Open source software and Open Access Institutional Repository software has a fundamental role in promoting OER. DSpace is perfect for building a DL or an institutional repository in libraries, especially for developing country libraries because this demands low cost and it is easy to implement in libraries as well as is user-friendly. Originality/value This paper will help to understand the role of the library community and librarians about OER. It will also show the impact of DL on OER. In addition, this paper encourages librarians to participate in OER movement.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Dimitrios V. Lyridis ◽  
Georgios O. Andreadis ◽  
Christos Papaleonidas ◽  
Violetta Tsiampa

PurposeThe current study addresses how blockchain can deal with the challenges that the midstream liquefied natural gas (LNG) supply chain poses combined from a management standpoint. Such challenges are: the volume of transactions, communication hurdles and the lack of contemporary management tools. The paper proposes a comprehensive framework to assess the impact of blockchain implementation in the midstream LNG supply chain in order to tackle those barriers.Design/methodology/approachThe basis of the research is the business process modelling (BPM), through which entities, roles, tasks, resources and transactions can be modelled and simulated. The modelling of the midstream LNG supply chain, via BPM, is based on guidelines of the Society of International Gas Tanker and Terminal Operators (SIGGTO) and common industry business models. A quantitative analysis is employed to support the motivation and the potential impact of blockchain implementation. The methodology is used to identify (1) inefficiencies related to large volume of transactions between stakeholders and (2) critical areas of an LNG shipping company, where blockchain can be implemented.FindingsProcess repeatability, numerous shared documentation forms, excessive paperwork and communication imbroglios are mapped from the modelling section. Up to 327 processes are repeated during a typical vessel voyage, and up to 122 shared documentation forms are exchanged. Excessive paperwork and communication imbroglios are tracked through, which correspond to 25 severe errors as detected. By implementing the methodology, stakeholders can quantify the possible impact of blockchain on the operational performance of each stakeholder's operations separately and the supply chain as a whole in terms of real-time monitoring, transparency and paperwork reduction, time and cost savings.Research limitations/implicationsThe research has certain limitations deriving from its conceptual nature. The business processes' modelling is based on standard procedures described in the guidelines by SIGGTO and may need further adjustment for specific use cases. A structured case study has not been realisable as corporate data for an LNG shipping company regarding processes and other commercial sensitive information are required.Practical implicationsPotential practitioners may exploit the proposed framework as a low cost and seamless tool to evaluate how blockchain could disrupt their operations. Thus, the blockchain implementation's improvements or weaknesses can be pinpointed, and enabling the interested stakeholder of the LNG supply chain with specific feedback, it can guide them towards informed decisions on their operations.Originality/valueThe research has a novel approach as it combines the creation of practical management framework, with a comprehensive visualization of the midstream LNG supply chain. Thus, the reader can identify in which parts of the midstream LNG supply chain can blockchain be implemented, and what impact it could have in terms of supply chain operations.


2021 ◽  
Vol 13 (8) ◽  
pp. 4375
Author(s):  
Nils Engelbrecht ◽  
Tim-Benjamin Lembcke ◽  
Alfred Benedikt Brendel ◽  
Kilian Bizer ◽  
Lutz M. Kolbe

It is controversially discussed if and which interventions policymakers should implement to promote healthier, more sustainable, and more ethical food choices. Often, policy measures suffer from a lack of data. This is especially true for the growing field of online grocery shopping. Yet, it not always feasible to test the impact of each possible policy intervention in the field. Here, computer-simulated shopping experiments offer a complementary approach. Recent evidence suggests that they heighten the realism of consumer experiments and collect valid data at a relatively low cost. In this paper, we introduce an open-source toolset that offers multiple avenues to develop and run experiments in the context of online grocery shopping. Hence, it supports researchers and policy makers in evaluating instore-intervention aiming to support more sustainable food choices.


2019 ◽  
Vol 21 (1) ◽  
pp. 118-128
Author(s):  
Dejthongpong Sathita

The article examines the role and peculiarities of the internet in Thailand as well as its influence on the development of democracy in the country. At present, information technology is becoming an essential communication tool and the internet plays an important role in political communication. The author uses comparative political method to analyze the advantages and disadvantages of using the internet as a communication instrument in democratic society. Also, the article focuses on the function of the internet as an information transmission channel. The analysis results show that the main advantage of using the internet as a political communication tool is low cost of information distribution as well as allround access to various information sources. This encourages citizens to participate in political activities of the state. On the other hand, the mass distribution of the internet as the main source of information has its disadvantages: unreliability of data, wide access to false information and discordance of opinions. In Thailand, citizens do not have free access to the Internet, so it is doubtful that it will have a great impact on the development of democracy in the country.


2016 ◽  
Vol 5 (3) ◽  
pp. 26-33 ◽  
Author(s):  
Harit Satt

All investors and stakeholders in general worry about the accuracy of both the financial information and the corporate governance, yet at different scales. Knowing that inadequacies exist in the financial information, would we be able to find some ways that would help us improve the credit rating of the firms? In order to answer this question, our research’s aim is to define the impact of analyst following (analyst quest) on firm’s credit rating throughout the period between 2002 and 2014. The research’ results exhibit that the level of analyst following has a positive influence on firms’ credit rating. However, this constructive influence occurs only when there is a significant degree of analyst following. Indeed, at a low analyst following, our results reveal a negative correlation between this factor and the firm’s credit rating. Consequently, we end up concluding that a high degree of analyst following makes it difficult for insiders to miscommunicate the right information related to firm’s value which reduces agency problems leading to a positive credit rating, thus a low cost of debt.


2020 ◽  
Vol 90 (3) ◽  
pp. 30502
Author(s):  
Alessandro Fantoni ◽  
João Costa ◽  
Paulo Lourenço ◽  
Manuela Vieira

Amorphous silicon PECVD photonic integrated devices are promising candidates for low cost sensing applications. This manuscript reports a simulation analysis about the impact on the overall efficiency caused by the lithography imperfections in the deposition process. The tolerance to the fabrication defects of a photonic sensor based on surface plasmonic resonance is analysed. The simulations are performed with FDTD and BPM algorithms. The device is a plasmonic interferometer composed by an a-Si:H waveguide covered by a thin gold layer. The sensing analysis is performed by equally splitting the input light into two arms, allowing the sensor to be calibrated by its reference arm. Two different 1 × 2 power splitter configurations are presented: a directional coupler and a multimode interference splitter. The waveguide sidewall roughness is considered as the major negative effect caused by deposition imperfections. The simulation results show that plasmonic effects can be excited in the interferometric waveguide structure, allowing a sensing device with enough sensitivity to support the functioning of a bio sensor for high throughput screening. In addition, the good tolerance to the waveguide wall roughness, points out the PECVD deposition technique as reliable method for the overall sensor system to be produced in a low-cost system. The large area deposition of photonics structures, allowed by the PECVD method, can be explored to design a multiplexed system for analysis of multiple biomarkers to further increase the tolerance to fabrication defects.


2020 ◽  
Vol 52 ◽  
pp. 55-61
Author(s):  
Ettore Potente ◽  
Cosimo Cagnazzo ◽  
Alessandro Deodati ◽  
Giuseppe Mastronuzzi

Author(s):  
J.R. Caradus ◽  
D.A. Clark

The New Zealand dairy industry recognises that to remain competitive it must continue to invest in research and development. Outcomes from research have ensured year-round provision of low-cost feed from pasture while improving productivity. Some of these advances, discussed in this paper, include the use of white clover in pasture, understanding the impacts of grass endophyte, improved dairy cow nutrition, the use of alternative forage species and nitrogen fertiliser to improve productivity, demonstration of the impact of days-in-milk on profitability, and the use of feed budgeting and appropriate pasture management. Keywords: dairy, profitability, research and development


MIS Quarterly ◽  
2019 ◽  
Vol 43 (3) ◽  
pp. 951-976
Author(s):  
Likoebe M. Maruping ◽  
◽  
Sherae L. Daniel ◽  
Marcelo Cataldo ◽  
◽  
...  

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