Open Access Original Research Article

HashNET Blockchain Consensus for DLT Applications

J. Maričević, K. Skala, Z. Šojat, J. Mesarić, I. Jerković, V. Bojović, D. Hofman

Current Journal of Applied Science and Technology, Page 1-12
DOI: 10.9734/cjast/2022/v41i431658

Our modern world is becoming increasingly reliant  on the processing, exchange and storage of information. This trend of so-called "digitalisation" is penetrating every pore of human civilisation, including nature, people, and machines; our economy and production, which must be as local as possible; and our global ecology. The use of information processing technology brings benefits to a wide range of endeavours. In this sense, many computing technologies and techniques must be used to achieve the goal of an integrated global service ecosystem, a Rainbow ecosystem of all hierarchical levels of computing.

One of the most important new developments in recent years is the development of blockchain technology. A blockchain can solve many problems of persistent and traceable storage, as well as enable direct coordination, compensation, etc. Therefore, in the Dew-Fog-Cloud hierarchy, blockchain technology is a promising new approach to enable novel applications in a variety of fields, from social and educational to scientific and industrial.

However, there are two important points in many implementations of the current blockchain which prevent them from being used for public service solutions. The first is the proof algorithm - the vast majority of proof-of-work algorithms do useless work and waste enormous amounts of energy. The second one is that  proof-of-stake algorithm is not suitable for open public infrastructure.

The HashNET algorithm, which uses proof-of-authority combined with master nodes to achieve distributed consensus and ensure trust, is explained in detail in this paper.

As an example of future applications in science, education and society, we also briefly describe certificate validation and future application for scientific publications.

Open Access Original Research Article

Research on Urban Road Traffic Flow Prediction Based on Wavelet Denoising and Multi-layer Perceptron

Longfeng Zhang, Yiqi Yang, Hao Kang, Yanqiao Deng

Current Journal of Applied Science and Technology, Page 24-31
DOI: 10.9734/cjast/2022/v41i431660

Aims: Develop a novel traffic flow prediction model to improve the accuracy of traffic flow prediction, better assist intelligent traffic management, improve traffic efficiency, reduce traffic congestion, and thus better improve sanitation and quality of life.

Study Design:  Develop an urban road traffic flow prediction model with strong predictive power and excellent stability.

Place and Duration of Study: Southwest University of Science and Technology, between July 2021 and March 2022.

Methodology: Adopting wavelet threshold to denoise, first decompose the original data, then perform noise filtering on the subsequences obtained after decomposing, and finally reconstruct the denoised data. Use denoised data to train a multilayer perceptron and make predictions on future data. At the same time, several representative models are selected to compare with the proposed model to verify the competitiveness of the proposed model.

Results: The proposed model has the smallest prediction error in the two training sets with different temporal granularity. In addition, we are using the data after wavelet denoising for training and prediction results in a smaller prediction error than using the data without denoising.

Conclusion: The proposed prediction model has strong prediction ability and generalization performance in the field of traffic flow prediction. The wavelet denoising method can effectively improve the prediction accuracy of traffic flow prediction.

Open Access Original Research Article

Design and Simulation of Amphibious Wheel-Foot Composite Mechanism

Li Longyan, Gu Shaokui

Current Journal of Applied Science and Technology, Page 13-23
DOI: 10.9734/cjast/2022/v41i431659

With the continuous development of society and the deepening of the level of science and technology, the fields explored by human beings are becoming more and more extensive, and the requirements for exploration are becoming more and more detailed. However, due to the limitation of mobility, most of the existing amphibious robots still can't be used to complete the specified tasks in complex environments. In order to meet the reliability of motion in complex environments, referring to ePaddle mechanism can enhance the mobility of amphibious robots. Based on the new movement mechanism of eccentric paddle mechanism (ePaddle), according to its principle and prototype, this paper proposes a compound wheeled amphibious robot, which realizes the movement of the robot through an improved eccentric lever mechanism. This mechanism includes multiple gaits, and can adapt to various complex terrains by actively changing the position of the paddle shaft to follow the alternate movement of the wheel foot and the paddle shaft. The key feature of the improved mechanism is to design the rotation of the planet carrier to drive the blades to expand and contract to realize underwater movement. This paper mainly introduces the kinematics analysis and prototype design, and simulates various gait movements through simulation software to verify the feasibility of the new design.

Open Access Original Research Article

Constraint Analysis of Pradhan Mantri Fasal Bima Yojana in Tumkur District of Karnataka

Umme Hani, G. Nagesha, Ganesh Moorthy, A. Raju

Current Journal of Applied Science and Technology, Page 32-36
DOI: 10.9734/cjast/2022/v41i431661

The Pradhan Mantri Fasal Bima Yojana was implemented to protect the farmers from crop loss due to unforeseen events and to reduce the burden of financial risk of farmers. Even though this crop insurance programme was found to be farmer friendly, rural people still feel difficulties in understanding and accepting it. Therefore, this problem analysis has become an important thrust area of extension research in the present context. The problem analysis would help to lubricate the process of diffusion of new insurance schemes among farmers. In this context, the study was undertaken in Tumkur district of Karnataka to analyse the constraints faced by the beneficiaries of Pradhan Mantri Fasal Bima Yojana. 120 respondents were selected by using the proportionate random sampling technique. Sixteen independent variables were selected based on judges' relevancy rating and were quantified using appropriate measurement devices. The data were collected using a pretested structured interview schedule and statistical tools Garret ranking techniques, mean and SD were used to analyze the data. Delay in getting claims (Rank I), inadequate compensation (Rank II), official bias in loss assessment (Rank III) and complex procedure (Rank IV) were the major problems experienced by beneficiaries. Problem with the time shortage and to pay the premium (Rank I), lack of awareness (Rank II) and not submission of required documents (Rank III) were the consequences for not getting benefits by non-beneficiaries. Claim should be dispersed before starting of the next season (Rank I), creation of separate cell at Block / Taluk level (Rank II), greater number of trainings need to be organized on the scheme (Rank III) and village level provision of insurance facilities (Rank IV) were the important recommendations given for the implementation of Pradhan Mantri Fasal Bima Yojana for the benefit of needy farmers. Delay in getting claims and inadequate compensation problems should be taken into consideration by the concerned development department officials of state government and insurance companies. So, that the early settlement of claims and adequate compensation is given to them. Educate farmers through online platforms, simplifying procedure of the registration process and claim settlement. Further, creation of separate PMFBY cell at village and block level, more advertisement on the scheme in mass media helps to reap the benefits by all the farmers.

Open Access Original Research Article

The Riemann Zeta Function and Its Zeroes

Taghreed Hamdi Alhadbani

Current Journal of Applied Science and Technology, Page 37-75
DOI: 10.9734/cjast/2022/v41i431662

This dissertation includes a detailed of the Riemann zeta functions; with a particular focus its analytic continuation, functional equation and application. We will start with the historical background. Following this we cover certain important preliminaries which are needed to use the functional equation. We then define the Riemann zeta function and prove the functional equation. In addition to this that, we show the Riemann zeta function has generalization in form of the Dirichlet L-function. Then, the zeroes of the Riemann zeta function will be studied. Finally, we establish the zero free region of Riemann zeta function.