scholarly journals Bitcoin as an example of cryptocurrency – current state and perspectives

2018 ◽  
Vol 4 (2) ◽  
pp. 47-56
Author(s):  
Seweryn Gajdek
Keyword(s):  
Low Cost ◽  
Banking System ◽  
Upward Trend ◽  
Computing Power ◽  
Digital Currency ◽  
Current State ◽  
Crypto Currency ◽  
High Volatility ◽  
Digital Money ◽  
Market Capitalisation

The idea of anonymous digital money existing outside of traditional banking system lasts at least 40 years. It appeared as soon as technological solutions, which such a system requires, became available. The article analyses the genesis of the crypto-currencies and technological solutions implemented into the Bitcoin digital currency. The article shows current state of the Bitcoin market and changes in its price, market capitalisation and number of transactions during last decade of operations of the crypto-currency market. Although there are difficulties in using Bitcoins, which include technical background and resulting from the high volatility of prices of this currency, the continuing upward trend of the Bitcoin price and the average daily number of transactions shows that interest in this currency is growing. Bitcoin features that attract new users are a large dose of anonymity, security of funds guaranteed by the extremely high computing power of the Bitcoin network, the speed of transactions and their low cost associated with the exclusion of a financial intermediary. The features of this money and data from the market allow to expect that Bitcoin will gain more individual and institutional users.

scholarly journals An Overview of Biodiesel Production via Calcium Oxide Based Catalysts: Current State and Perspective

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3950
Author(s):  
Hoora Mazaheri ◽  
Hwai Chyuan Ong ◽  
Zeynab Amini ◽  
Haji Hassan Masjuki ◽  
M. Mofijur ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Calcium Oxide ◽  
Heterogeneous Catalysts ◽  
Low Cost ◽  
Biodiesel Production ◽  
Catalyst Synthesis ◽  
Process Improvements ◽  
Current State ◽  
The Common ◽  
Activity Mechanism

Biodiesel is a clean, renewable, liquid fuel that can be used in existing diesel engines without modification as pure or blend. Transesterification (the primary process for biodiesel generation) via heterogeneous catalysis using low-cost waste feedstocks for catalyst synthesis improves the economics of biodiesel production. Heterogeneous catalysts are preferred for the industrial generation of biodiesel due to their robustness and low costs due to the easy separation and relatively higher reusability. Calcium oxides found in abundance in nature, e.g., in seashells and eggshells, are promising candidates for the synthesis of heterogeneous catalysts. However, process improvements are required to design productive calcium oxide-based catalysts at an industrial scale. The current work presents an overview of the biodiesel production advancements using calcium oxide-based catalysts (e.g., pure, supported, and mixed with metal oxides). The review discusses different factors involved in the synthesis of calcium oxide-based catalysts, and the effect of reaction parameters on the biodiesel yield of calcium oxide-based catalysis are studied. Further, the common reactor designs used for the heterogeneous catalysis using calcium oxide-based catalysts are explained. Moreover, the catalytic activity mechanism, challenges and prospects of the application of calcium oxide-based catalysts in biodiesel generation are discussed. The study of calcium oxide-based catalyst should continue to be evaluated for the potential of their application in the commercial sector as they remain the pivotal goal of these studies.

scholarly journals A Digital Currency Architecture for Privacy and Owner-Custodianship

2021 ◽  
Vol 13 (5) ◽  
pp. 130
Author(s):  
Geoffrey Goodell ◽  
Hazem Danny Al-Nakib ◽  
Paolo Tasca
Keyword(s):  
Systemic Risk ◽  
Banking System ◽  
Developed Countries ◽  
Fractional Reserve Banking ◽  
Point Of Sale ◽  
Digital Currency ◽  
Fractional Reserve ◽  
Banking Relationships ◽  
Reserve Banking ◽  
Payment Mechanisms

In recent years, electronic retail payment mechanisms, especially e-commerce and card payments at the point of sale, have increasingly replaced cash in many developed countries. As a result, societies are losing a critical public retail payment option, and retail consumers are losing important rights associated with using cash. To address this concern, we propose an approach to digital currency that would allow people without banking relationships to transact electronically and privately, including both e-commerce purchases and point-of-sale purchases that are required to be cashless. Our proposal introduces a government-backed, privately-operated digital currency infrastructure to ensure that every transaction is registered by a bank or money services business, and it relies upon non-custodial wallets backed by privacy-enhancing technology, such as blind signatures or zero-knowledge proofs, to ensure that transaction counterparties are not revealed. Our approach to digital currency can also facilitate more efficient and transparent clearing, settlement, and management of systemic risk. We argue that our system can restore and preserve the salient features of cash, including privacy, owner-custodianship, fungibility, and accessibility, while also preserving fractional reserve banking and the existing two-tiered banking system. We also show that it is possible to introduce regulation of digital currency transactions involving non-custodial wallets that unconditionally protect the privacy of end-users.

POTENTIAL OF BANK CURRENCY TRANSACTIONS WITH CRYPTOCURRENCY IN RUSSIA

2021 ◽  
Author(s):  
Юлия Борисовна Арон ◽  
Елена Валерьевна Жегалова
Keyword(s):  
Russian Federation ◽  
Banking System ◽  
Legal Regulation ◽  
Actual Problem ◽  
Digital Currency ◽  
Russian Economy ◽  
The Russian Federation ◽  
Definition Of

В статье рассматривается актуальная проблема интеграции крипто-валюты в банковскую систему РФ. Авторами предлагается определение криптовалюты, обосновывается востребованность использования цифровой валюты в экономике. Рассматривается специфика современного правового регулирования операций с криптовалютой и перспективы его развития в российской экономике. The article deals with the actual problem of integrating cryptocurrency into the banking system of the Russian Federation. The authors propose a definition of cryptocurrency, substantiate the demand for the use of digital currency in the economy. The article considers the specifics of modern legal regulation of cryptocurrency transactions and the prospects for its development in the Russian economy.

scholarly journals BUDGET UAV SYSTEMS FOR THE PROSPECTION OF SMALL- AND MEDIUM-SCALE ARCHAEOLOGICAL SITES

2016 ◽  
Vol XLI-B1 ◽  
pp. 971-977 ◽  
Author(s):  
W. Ostrowski ◽  
K. Hanus
Keyword(s):  
Low Cost ◽  
Planning System ◽  
Archaeological Sites ◽  
Quality Of Data ◽  
Computing Power ◽  
Medium Scale ◽  
The Cost ◽  
User Friendly ◽  
Operational Range

One of the popular uses of UAVs in photogrammetry is providing an archaeological documentation. A wide offer of low-cost (consumer) grade UAVs, as well as the popularity of user-friendly photogrammetric software allowing obtaining satisfying results, contribute to facilitating the process of preparing documentation for small archaeological sites. However, using solutions of this kind is much more problematic for larger areas. The limited possibilities of autonomous flight makes it significantly harder to obtain data for areas too large to be covered during a single mission. Moreover, sometimes the platforms used are not equipped with telemetry systems, which makes navigating and guaranteeing a similar quality of data during separate flights difficult. The simplest solution is using a better UAV, however the cost of devices of such type often exceeds the financial capabilities of archaeological expeditions. <br><br> The aim of this article is to present methodology allowing obtaining data for medium scale areas using only a basic UAV. The proposed methodology assumes using a simple multirotor, not equipped with any flight planning system or telemetry. Navigating of the platform is based solely on live-view images sent from the camera attached to the UAV. The presented survey was carried out using a simple GoPro camera which, from the perspective of photogrammetric use, was not the optimal configuration due to the fish eye geometry of the camera. Another limitation is the actual operational range of UAVs which in the case of cheaper systems, rarely exceeds 1 kilometre and is in fact often much smaller. Therefore the surveyed area must be divided into sub-blocks which correspond to the range of the drone. It is inconvenient since the blocks must overlap, so that they will later be merged during their processing. This increases the length of required flights as well as the computing power necessary to process a greater number of images. <br><br> These issues make prospection highly inconvenient, but not impossible. Our paper presents our experiences through two case studies: surveys conducted in Nepal under the aegis of UNESCO, and works carried out as a part of a Polish archaeological expedition in Cyprus, which both prove that the proposed methodology allows obtaining satisfying results. The article is an important voice in the ongoing debate between commercial and academic archaeologists who discuss the balance between the required standards of conducting archaeological works and economic capabilities of archaeological missions.

scholarly journals Current state and development trends of livestock in the Republic of Kazakhstan

2021 ◽  
Vol 16 (2) ◽  
pp. 134-144
Author(s):  
S. M. Yessengaliyeva ◽  
M. A. Mansurova ◽  
A. D. Makhmudov ◽  
L. V. Fedorchenko
Keyword(s):  
Negative Impact ◽  
Low Cost ◽  
Meat Products ◽  
Animal Husbandry ◽  
Farm Animals ◽  
Industrial Complex ◽  
Resource Saving ◽  
Livestock Industry ◽  
Current State ◽  
The Republic

The article is devoted to the study and analysis of the current state of the animal husbandry industry in the Republic of Kazakhstan in the context of regions. The indicators of the dynamics of the number of livestock of farm animals for the period 2015-2019 by regions, indicators of productivity in the industry, indicators of the volume of production of meat products are analyzed. The dynamics and structure of costs in the country’s livestock industry are also considered.Today, one of the most pressing problems in the development of the agro-industrial complex is the low level of labor productivity due to low automation and digitalization of technological processes. The need to meet the demand for livestock products in the domestic market of the Republic of Kazakhstan, as well as to increase its export resources, poses a challenge for Kazakhstani science and practice to develop, scientifically substantiate and master modern technologies for the production of low-cost, environmentally friendly, competitive products of the industry. They should be resource-saving, aimed at maximizing the use and improvement of the genetic potential of farmed farm animals, adapted to the specific natural and economic conditions of the regions of the republic. The development and mastering of such technologies will make it possible to weaken the negative impact of the industry on the environment, reduce the cost of material resources, and effectively use the available land and water resources [5].The main problems hindering the effective development of the country’s livestock industry are identified. The promising strategic directions for the development of this industry have been determined. From the point of view of experts of the financial organization, the country has good potential and opportunities to export its beef and pork to China, and the lamb of the Edilbay sheep breed to the countries of the Middle East.

scholarly journals CURRENT STATE OF THE BANKING SYSTEM OF UKRAINE

2020 ◽  
Vol 25 (2(81)) ◽  
Author(s):  
Oleksii Muravskyi ◽  
Dmytro Shevchuk
Keyword(s):  
Banking System ◽  
Current State

scholarly journals CENTRAL BANK DIGITAL CURRENCY: ECONOMIC AND LEGAL CHARACTERISTICS

2019 ◽  
pp. 94-100
Author(s):  
T.S. Hudima ◽  
V.A. Ustymenko
Keyword(s):  
Monetary Policy ◽  
Central Bank ◽  
Financial Stability ◽  
Banking System ◽  
Legal Framework ◽  
Central Banks ◽  
Digital Currency ◽  
Business Entities ◽  
The Right ◽  
Article 5

The article is devoted to identifying the peculiarities of the central bank digital currency (CBDC), explaining their impact on the monetary policy of the state, and identifying the prospects for the transformation of domestic banking legislation in connection with the implementation of the CBDC. It is noted that the scope of competence of the Central Bank and the legal basis for the issuance of the CBDC will depend on the economic and legal features of the digital currency, the degree of its impact on the monetary policy, the financial stability of the country’s economy and so on. In the process of forming the appropriate legal field and defining the conceptual apparatus in the sphere of emission and circulation of the CBDC, the peculiarities of the use of the latter in economic transactions and the specific functions not inherent in ordinary means of payment should be taken. СBDC initiatives will help: 1) progressively narrow the banking system at the level of the Central Banks (such as the Chicago Plan) by allowing individuals and businesses to deposit directly into the accounts of the Central Banks; 2) increasing confidence of economic entities and individuals in the financial system; 3) strengthening the financial stability of the economy (both domestically and globally). Granting business entities or individuals the right to store digital money directly with the Central Bank can give rise to two main directions of influence on monetary policy: first, to strengthen its transmission mechanism; secondly, lead to banks being disrupted. This may lead to some legal issues regarding (1) the NBU’s area of competence; (2) the constitutional foundations of the legal economic order (Article 5 of the ECU). In particular, it cannot be ruled out that centralization of the production, servicing, and management of the СBDC turnover may violate the principles of competition in business activities, prevent abuse of monopoly position in the market, etc. Keywords: monetary policy, central bank digital currency, financial stability, competence, legal framework, economic operations, issue.

scholarly journals Cryptocurrencies: They´re really that lucrative?

2021 ◽  
Vol 129 ◽  
pp. 03002
Author(s):  
Roman Blazek
Keyword(s):  
Value Added ◽  
Investment Activity ◽  
Advantages And Disadvantages ◽  
Digital Currency ◽  
Virtual Economy ◽  
Online Trading ◽  
Digital Money ◽  
Basic Purpose ◽  
Alternative Sources ◽  
Analyze Data

Research background: Cryptocurrency is a digital currency that is intended for online trading. It uses and implements the principles of cryptography to create a distributed, decentralized and secure digital currency. Virtual money is a new and promising branch of the virtual economy that brings many advantages and disadvantages in a global sense. Many people have become involved in cryptocurrency hype because high investments in this digital money have been seized during the pandemic. The rise in revenues from this digital money has gripped the world globally. Purpose of the article: The basic purpose and chosen goal is to analyze the use of cryptomen trading during the global Covid-19 pandemic, as well as investing in these alternative sources of investment, which are gaining more attention every day precisely because of their freedom and detachment. Methods: The article will analyze data that will be compared based on the years before the Covid-19 pandemic and during the Covid-19 pandemic. Based on these data, the investment activity of people, companies, corporations is compared. Findings & Value added: Based on the results in the article, it was found that during the Covid-19 pandemic, the interest in investing in cryptocurrencies increased compared to the interest in investing in cryptocurrencies before the pandemic. The overall result is that people are moving to a new way of holding money, as cryptocurrencies are a new way to the future, as banks are unable to provide such returns from client deposits as cryptocurrencies, but they are associated with much greater risk.

scholarly journals Digital Currency Studies In Islamic Perspective

2021 ◽  
Vol 8 (2) ◽  
pp. 47-65
Author(s):  
Bedjo Santoso ◽  
MA Irfan Rahmana ◽  
Atin Anggraini Surono
Keyword(s):  
Qualitative Analysis ◽  
Sampling Technique ◽  
Ahp Method ◽  
Analytical Hierarchical Process ◽  
Digital Currency ◽  
Digital Money ◽  
Exchange Measurement ◽  
Fairness Principles ◽  
Main Attribute

This study aims to determine the best type of Digital currency according to Islam. This study uses the Analytical Hierarchical Process (AHP) method by developing several alternative digital currencies and attributes (indicators). In addition, this study also uses deductive qualitative analysis. Respondents in this study amounted to 100 people with the sampling technique Area Stratified Purposive Sampling and several selected respondents were interviewed. The results show that Gold-based Digital Money is the best type of Digital currency according to Islam. The main attribute of ownership in Gold-based Digital Money is Usury abolishment capability. Other factors are Gharar Eraducation, Maysir Eraducation, Justice / Fairness Principles, Medium of exchange, Measurement of value, Store of value and Differed payment instrument. In addition, this model can accommodate 7 criteria for the role of currency in the economy.

Smart Nanodevices for Point-of-Care Applications

2021 ◽  
Vol 17 ◽  
Author(s):  
Rajasekhar Chokkareddy ◽  
Suvardhan Kanchi ◽  
Inamuddin
Keyword(s):  
Chronic Diseases ◽  
Patient Monitoring ◽  
State Of The Art ◽  
Point Of Care ◽  
Low Cost ◽  
Medical Diagnostics ◽  
Diagnostic Tools ◽  
Current State ◽  
Rural Patients ◽  
Diagnosis Of Diseases

Background: While significant strides have been made to avoid mortality during the treatment of chronic diseases, it is still one of the biggest health-care challenges that have a profound effect on humanity. The development of specific, sensitive, accurate, quick, low-cost, and easy-to-use diagnostic tools is therefore still in urgent demand. Nanodiagnostics is defined as the application of nanotechnology to medical diagnostics that can offer many unique opportunities for more successful and efficient diagnosis and treatment for infectious diseases. Methods: In this review we provide an overview of infectious disease using nanodiagnostics platforms based on nanoparticles, nanodevices for point-of-care (POC) applications. Results: Current state-of-the-art and most promising nanodiagnostics POC technologies, including miniaturized diagnostic tools, nanorobotics and drug delivery systems have been fully examined for the diagnosis of diseases. It also addresses the drawbacks, problems and potential developments of nanodiagnostics in POC applications for chronic diseases. Conclusions: While progress is gaining momentum in this field and many researchers have dedicated their time in developing new smart nanodevices for POC applications for various chronic diseases, the ultimate aim of achieving longterm, reliable and continuous patient monitoring has not yet been achieved. Moreover, the applicability of the manufactured nanodevices to rural patients for on-site diagnosis, cost, and usability are the crucial aspects that require more research, improvements, and potential testing stations. Therefore, more research is needed to develop the demonstrated smart nanodevices and upgrade their applicability to hospitals away from the laboratories.

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