A sustainable village phone model to serve the rural developing world

Wireless technologies have created an unprecedented opportunity for rural customers in the developing world to solve their communication and information problems in an instantaneous, interactive and customized way. The framework of the study focuses on existing mobile village phone model in Bangladesh and suggests ways to make it sustainable through mobile information services marketing. The study has treated ‘village phone’ as a cost effective and interactive channel through which various time befitting information can be marketed to serve customers in the rural settings

Efficient and Low-Cost RFID Authentication Schemes

Security in passive resource-constrained Radio Frequency Identification (RFID) tags is of much interest nowadays. Resistance against illegal tracking, cloning, timing, and replay attacks are necessary for a secure RFID authentication scheme. Reader authentication is also necessary to thwart any illegal attempt to read the tags. With an objective to design a secure and low-cost RFID authentication protocol, Gene Tsudik proposed a timestamp-based protocol using symmetric keys, named YA-TRAP*. Although YA-TRAP* achieves its target security properties, it is susceptible to timing attacks, where the timestamp to be sent by the reader to the tag can be freely selected by an adversary. Moreover, in YA-TRAP*, reader authentication is not provided, and a tag can become inoperative after exceeding its pre-stored threshold timestamp value. In this paper, we propose two mutual RFID authentication protocols that aim to improve YA-TRAP* by preventing timing attack, and by providing reader authentication. Also, a tag is allowed to refresh its pre-stored threshold value in our protocols, so that it does not become inoperative after exceeding the threshold. Our protocols also achieve other security properties like forward security, resistance against cloning, replay, and tracking attacks. Moreover, the computation and communication costs are kept as low as possible for the tags. It is important to keep the communication cost as low as possible when many tags are authenticated in batch-mode. By introducing aggregate function for the reader-to-server communication, the communication cost is reduced. We also discuss different possible applications of our protocols. Our protocols thus capture more security properties and more efficiency than YA-TRAP*. Finally, we show that our protocols can be implemented using the current standard low-cost RFID infrastructures.Comment: 21 pages, Journal of Wireless Mobile Networks, Ubiquitous Computing, and Dependable Applications (JoWUA), Vol 2, No 3, pp. 4-25, 201

Quality modeling in electronic healthcare: a study of mHealth Service

Information and communication technologies (ICTs) have the potential to radically transform health services in developing countries. Among various ICT driven health platforms, mobile health is the most promising one because of its widespread penetration and cost effective services. This paper aims to examine Quality Modeling in Electronic Healthcare by using PLS based SEM

Woven Natural Fiber-Reinforced Pla Polymer 3d Printed Through A Laminated Object Manufacturing (Lom) Process

This investigation explored an innovative additive manufacturing method that employed laminated object manufacturing (LOM) technology in combination with woven natural fiber-reinforced biopolymer. Conventional synthetic composites are made from crude oil that are nonrenewable and have few options for disposal or recycling, rendering them ecologically unfavorable. Integration of continuous woven natural fiber with polylactic acid (PLA) markedly enhances the mechanical strength to ensure complete biodegradability. Woven natural fiber-reinforced biocomposites are considered a promising alternative to synthetic composites. The potential applications of these fiber-reinforced PLA polymers include vehicle panels, construction materials, athletics equipment, and musical apparatuses. The author has developed and constructed a prototype LOM 3D printer for this research. The LOM 3D printer prototype utilized a laser to cut the woven Jute/PLA, and the melted PLA powder helped to bond successive plies. The tensile and flexural characteristics of the LOM-printed biocomposites were assessed. For comparison, corresponding values were measured from Fused Deposition Modeling (FDM) 3D-printed pure PLA specimens. The infusion of PLA polymer and the bonding with fiber were subsequently investigated under a Scanning Electron Microscope (SEM) by examining the cross-sections of the failed test specimens. The experiment results revealed that LOM 3D-printed biocomposites exhibited improved mechanical properties compared to FDM-printed pure PLA specimens. Additionally, the author conducted a Finite Element Analysis (FEA) simulation and compared it with the experimental outcomes. This research study successfully integrated the advantages of both material and process, consolidating them into a unified and sustainable approach. Index Terms- Additive manufacturing, biocomposites manufacturing, finite element analysis (FEA), laminated object manufacturing (LOM), mechanical properties, polylactic acid (PLA), scanning electron microscope (SEM), woven natural fiber

The Role Of Bangladesh As A Coastal State In Preventing Marine Plastic Pollution From Land-Based Sources

Marine Plastic Pollution from land-based sources is posing a serious threat to the marine environment. This thesis aims to examine the international laws and national laws of Bangladesh regarding plastic pollution from land-based sources

On The Non-linear Distortion Effects in an OFDM-RoF Link

Radio over Fiber (RoF) system is a promising technique for microcell and picocell applications for deployment of future ubiquitous wireless data networks. However, the performance of RoF systems can be severely degraded due to non-linear effects in the channel. Also, Orthogonal Frequency Division Multiplexing (OFDM), as a standard for broadband wireless networks, is being proposed for deployment with RoF systems to facilitate the total performance of a system. In this research, at first, the performance of OFDM-based RoF link with Mach-Zehnder modulator distortion effects has been analyzed at 5.8 GHz. Evaluation of mean-squared error of the proposed OFDM-RoF system was carried out to compare with the conventional single carrier system based RoF link after the modulator distortion case and also for fixed Signal to Noise Ratio (SNR) of 20 dB using undistorted OFDM signal. Later, nominal and offset biasing pre-distortion techniques are applied in proposed system to linearize the OFDM-RoF link. Thus, finally a comparison between the aforementioned pre-distortion techniques applied showed important observation in terms of distortion-free dynamic range and SNR to choose offset pre-distortion technique for our proposed system

Eco-branding: A Way to Sustainable Business Opportunities in Bangladesh

Eco-branding is a market instrument which helps both companies and consumers achieving sustainable goals and contributing to environmental protection and amelioration. This study identified the background and conceptual aspects of eco-branding from the manufacturers’ as well as the consumers’ end. Besides, the awareness and the perceptions of the marketing of eco-branded products among the consumers in Bangladesh were examined through interviewing regular customers in Noakhali city. Moreover, some basic information on eco-branded products and the role of different stakeholders were collected through intensive market observations and literature review. From the survey, only 45% respondents are found aware of the eco-branded products but 75% respondents are willing to pay up to 20% extra for these products. A number of local and international companies are coming up with substantial amounts of eco-branded products in the local market of Bangladesh. It is evident that growing social and regulatory pro-environmental concerns are responsible for such changes in production strategies of manufacturers and consumption patterns of informed consumers. Eco-branding, though is in its infancy, has enormous potential to sustain in Bangladesh’s marketplace. Keywords: Bangladesh eco-branding, Eco-label, Sustainable business, Eco-friendly business, Environmental protection

Cloud Forensic: Issues, Challenges and Solution Models

Cloud computing is a web-based utility model that is becoming popular every day with the emergence of 4th Industrial Revolution, therefore, cybercrimes that affect web-based systems are also relevant to cloud computing. In order to conduct a forensic investigation into a cyber-attack, it is necessary to identify and locate the source of the attack as soon as possible. Although significant study has been done in this domain on obstacles and its solutions, research on approaches and strategies is still in its development stage. There are barriers at every stage of cloud forensics, therefore, before we can come up with a comprehensive way to deal with these problems, we must first comprehend the cloud technology and its forensics environment. Although there are articles that are linked to cloud forensics, there is not yet a paper that accumulated the contemporary concerns and solutions related to cloud forensic. Throughout this chapter, we have looked at the cloud environment, as well as the threats and attacks that it may be subjected to. We have also looked at the approaches that cloud forensics may take, as well as the various frameworks and the practical challenges and limitations they may face when dealing with cloud forensic investigations.Comment: 23 pages; 6 figures; 4 tables. Book chapter of the book titled "A Practical Guide on Security and Privacy in Cyber Physical Systems Foundations, Applications and Limitations", World Scientific Series in Digital Forensics and Cybersecurit