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I am a tool : how to be a YouTube kingpin and dominate the Internet
A hilarious, in-your-face guide to the online universe from the wildly popular YouTube sensation and undisputed BEAST of the Internet, KSI.
Book
Securing e-health records using keyless signature infrastructure blockchain technology in the cloud
Health record maintenance and sharing are one of the essential tasks in the healthcare system. In this system, loss of confidentiality leads to a passive impact on the security of health record whereas loss of integrity leads can have a serious impact such as loss of a patient’s life. Therefore, it is of prime importance to secure electronic health records. Health records are represented by Fast Healthcare Interoperability Resources standards and managed by Health Level Seven International Healthcare Standards Organization. Centralized storage of health data is attractive to cyber-attacks and constant viewing of patient records is challenging. Therefore, it is necessary to design a system using the cloud that helps to ensure authentication and that also provides integrity to health records. The keyless signature infrastructure used in the proposed system for ensuring the secrecy of digital signatures also ensures aspects of authentication. Furthermore, data integrity is managed by the proposed blockchain technology. The performance of the proposed framework is evaluated by comparing the parameters like average time, size, and cost of data storage and retrieval of the blockchain technology with conventional data storage techniques. The results show that the response time of the proposed system with the blockchain technology is almost 50% shorter than the conventional techniques. Also they express the cost of storage is about 20% less for the system with blockchain in comparison with the existing techniques.
Journal Article
Shear-Friction Strength of Reinforced Concrete Walls with 700 MPa Reinforcing Bars
Recently, the use of 700 MPa (101.5 ksi) reinforcing bars was permitted for the shear design of special walls in the current design code. In the present study, to investigate the effect of 700 MPa (101.5 ksi) reinforcement on the shear-friction strength of reinforced concrete (RC) walls, five wall specimens were tested under cyclic lateral loading. For the test parameters, interface roughness, the vertical reinforcement ratio at boundary elements, and the use of flanged walls (two flanges or single flange) were considered. The test results showed that the shear-friction strength of walls with 700 MPa (101.5 ksi) reinforcing bars was greater than the ACI 318-19 shear-friction strength. Particularly, in the wall with a low vertical reinforcement ratio (0.27%), the peak strength was greater than the shear-friction strength corresponding to the actual high yield strength (700 MPa [101.5 ksi]) of vertical reinforcing bars. Further, the vertical reinforcing bars in the flanged wall significantly increased the shear-friction strength. The current ACI 318-19 design method and an improved model were evaluated based on the existing test results, including the present study.
Journal Article
The Paradoxes of Trust and Transparency of Blockchain Technologies
The Republic and Canton of Jura has decided to adopt and integrate the CERTUS digital seal and the KSI blockchain as the central technological components of their e-government portal and of their digital government transformation program. However, this project is taking place in turbulent times. While blockchain suffers from a bad reputation for ecological reasons and while the Swiss Confederation has rejected the selected blockchain solution, this article seeks to answer how to grasp the paradoxes of blockchain technologies acceptance by state citizens in an extreme management situation. Through an action research that aims to solve practical problems and create scientific knowledge, this study highlights the paradox of trust and considers blockchain technologies to enhance trust between citizens in politically stable countries. Furthermore, it investigates the paradox of transparency of blockchain technologies in an extreme management situation and proposes communicating in two levels of abstraction to limit tensions in turbulent times.
Journal Article
Effect of Low Reinforcement Ratio on Reinforced Concrete Wall with 700 MPa Reinforcing Bars
High-strength reinforcing bars can be used for the economical design of reinforced concrete shear walls by reducing the reinforcement ratio. However, current design codes require the minimum reinforcement ratio regardless of the yield strength of reinforcing bars. In this study, to investigate the adequacy of the minimum reinforcement ratio of Grade 700 MPa (101.5 ksi) reinforcing bars, seven wall specimens were tested under cyclic lateral loading. The test parameters were the failure mode (shear or flexural mode), reinforcing bar yield strength (Grade 400 and 700 MPa [58 and 101.5 ksi]), and reduced minimum reinforcement ratio (pv = 0.14 to 0.27% and ph = 0.14 to 0.25%). The test results showed that the peak strengths of walls with 700 MPa (101.5 ksi) reinforcement were greater than the nominal flexural and shear strengths, even with a lower minimum reinforcement ratio (pv = 0.14% and ph = 0.14%). However, the safety margin and ductility decreased with increasing flexural and shear crack widths. Additionally, the strengthening of existing walls (Grade 400 reinforcing bars) with high-strength reinforcing bars (Grade 700) was studied. The test results showed that the shear contribution of extended wall segments with Grade 700 reinforcing bars was limited by the early yielding of Grade 400 reinforcing bars.
Journal Article
Shear Strength of Reinforced Concrete Wall with 700 MPa Shear Reinforcement
In the present study, to investigate shear strength of concrete walls with 700 MPa (101.5 ksi) shear reinforcement, eight wall specimens were tested under cyclic lateral loading. The test parameters were failure modes, bar yield strength, aspect ratio, and axial load ratio. The test results showed that the shear strength of walls with 700 MPa (101.5 ksi) reinforcing bars was equivalent to or slightly less than those of walls with 400 MPa (58 ksi) reinforcing bars. In both walls, the tested shear strength was greater than the nominal strength of current design code. Further, regardless of the bar grade, the failure modes were similar, and shear reinforcement reached its yield strength. To investigate the effect of 700 MPa (101.5 ksi) reinforcing bars on the peak strength and deformation capacity of RC walls, parametric study was performed using an existing strain-based model. Keywords: cyclic loading; Grade 700 MPa (101.5 ksi) bar; shear strength; shear wall.
Journal Article
Transforming Airport Security: Enhancing Efficiency through Blockchain Smart Contracts
In the aviation industry, the issuance of airside passes often encounters significant delays, posing logistical challenges and hindering crucial operations. This study delves into the potential of implementing blockchain technology, particularly smart contracts, to streamline and expedite airport security processes. Our analysis of data from leading UK airports reveals notable inefficiencies in the current airside pass issuance procedures, necessitating a transformative solution. We advocate for the integration of blockchain smart contracts as a pioneering approach to substantially reduce processing times. By automating execution based on predefined conditions, smart contracts have the potential to revolutionize airport security operations. This research signifies a groundbreaking advancement in the use of smart contracts within the airline industry, underscoring the substantial efficiency improvements that can be achieved. As we conclude this study, we foresee further research and practical implementations to unlock the full transformative impact of blockchain technology on aviation security.
Journal Article
Effect of Tempering Temperature on Microstructure and Sulfide Stress Cracking of 125 Ksi Grade Casing Steel
The influence of tempering temperature on the microstructure of 0.5Cr0.4W steels was investigated by scanning electron microscope, and the roles of grain boundary character, dislocation, and Taylor factor in sulfide stress cracking (SSC) resistance were interpreted using the election backscattered diffraction technique. The 0.5Cr0.4W steels tempered at 690 °C, 700 °C, and 715 °C all showed tempered martensites. The specimen tempered at 715 °C exhibited a higher critical stress intensity factor (KISSC) of 34.58 MPa·m0.5, but the yield strength of 800 MPa did not meet the criterion of 125 ksi (862 MPa) grade. When the specimen was tempered at 690 °C, the yield strength reached 960 MPa and the KISSC was only 21.36 MPa·m0.5, displaying poorer SSC resistance. The 0.5Cr0.4W steel tempered at 700 °C showed a good combination of yield strength (887 MPa) and SSC resistance (KISSC: 31.16 MPa·m0.5). When increasing the tempering temperature, the local average misorientation and Taylor factor of the 0.5Cr0.4W steels were decreased. The reduced dislocation density, and greater number of grains amenable to slippage, produced less hydrogen transport and a lower crack sensitivity. The SSC resistance was, thus, increased, owing to the minor damage to hydrogen aggregation. Therefore, 700 °C is a suitable tempering temperature for 0.5Cr0.4W casing steel.
Journal Article
Expenses Mastery: Thriving on Thrift for Sustainable Budgeting and Elevating Finnov
The purpose of this study was to examine the relationships between factors influencing business expense management and their impact on mastering expenses in the context of fostering sustainable budgeting and financial innovation (Finnov). The research focused on identifying critical elements that contribute to expense optimization and financial sustainability within corporations. The study employed a quantitative research design using data collected from treasurers and financial managers of 200 corporations in the Western Balkan Countries between 2020 and 2023. Analytical methods, including exploratory factor analysis, reliability analysis, and multiple regression analysis, were used to explore the relationships between various factors and their impact on expense management practices systematically. The findings revealed significant statistical relationships between expense management practices and sustainable budgeting. Key factors such as transparency, timely reimbursement, and clear communication emerged as critical for optimizing expense management. Additionally, flexibility in financial processes, enhanced financial communication, and the integration of financial and business management performance were identified as drivers of financial sustainability and innovation. This study contributes novel insights into the interplay between expense management and financial innovation, emphasizing actionable strategies for achieving financial sustainability. The results provide valuable guidance for businesses aiming to refine their expense management frameworks, support sustainable budgeting, and foster innovation in financial practices.
Journal Article
Times Series Analysis Of Road Safety Trends At The Regional Level In Poland
The paper presents possibility of applying a structural times series modeling with explanatory and intervention variables as a tool capable for explaining the changes in the monthly number of fatalities and seriously injured in traffic accidents. The analysis covers regional level and takes into consideration traffic accidents data of two regions: Pomorskie and Warmia-Mazury. In addition short-term forecasts for the two regions were developed and verified.
Journal Article