Keyless Security: The Smart Solution for Home with a Smart Door Lock

This research paper introduces a novel approach to improve security and access control in smart door lock systems. The proposed system incorporates multi-factor authentication, combining a numerical keypad, mobile app, and RFID sensor. Each authentication method is associated with a specific lock, offering differentiated access control. Notably, the system requires the simultaneous use of the mobile app and RFID sensor to unlock a designated lock, adding an extra layer of security. To assess the system's effectiveness, a comprehensive study was conducted, considering security, usability, and user satisfaction. The study involved simulated attacks, user surveys, and usability tests, with data analysis providing insights into the system's resilience and user acceptance. This research contributes to the field of smart door lock systems by offering an innovative approach to enhance security through multi-factor authentication. The findings provide valuable insights for designing advanced access control mechanisms, empowering users with increased confidence in their security measures while maintaining a user-friendly experience

Occupational Health in the Digital Age: Implications for Remote Work Environments

In this digital age, where working from home is becoming more common, the patterns of workplace health are changing in ways that require a thorough analysis of the effects on employee health. This study looks into the many parts of job health in places where people work from home, looking at how technology, human behavior, and company rules interact.The digital age has made work plans more flexible than ever before, letting workers do their jobs from anywhere. This paradigm shift has some benefits, like making things more flexible and easy to access, but it also brings a lot of problems that need to be carefully thought through. Long-term use of digital devices can be bad for your body, and being alone at work can be bad for your mental health. Remote work situations have their own health issues that need a unique approach.This study brings together different pieces of research on workplace health to highlight the new health risks that come with the digitalization of work. There is a close look at how technology can help or hurt employee health and a study of how companies can lower health risks in remote work settings.Additionally, the study looks into the possible long-term effects of long-term remote work on mental and physical health, as well as how well present workplace health systems can adapt to the changing nature of work. By critically evaluating the intersection of technology and health, this study provides valuable insights for policymakers, organizations, and individuals seeking to optimize the well-being of remote workers in the digital age

Variations in coronary artery diameter: a retrospective observational study in Indian population

Objective: The diameter of coronary arteries varies greatly among general population. The knowledge of variations in coronary arteries helps the clinicians to define abnormalities and plan the treatment. Hence, the present study was aimed to study common primary variations of coronary arteries by angiography in Indian population. Methods: The data for this unicenter, retrospective, observational study was collected from general hospital, Maharashtra, as patient data sheets and coronary angiograms (CAG) reports for a period of 1 year and 8 months. The CAG were studied for variations in main trunk diameter of coronary arteries and range of diameters of coronary arteries. Results: A total of 400 conventional CAGs were observed, of which 17 angiograms showed anatomical variations. The diameter of left coronary artery was more than right coronary artery (RCA) in 90.5% and less in 9.5% of CAGs. Statistically significant difference was observed on comparing the mean diameter of RCA (3.40(0.81 mm) and left coronary artery (4.52(0.95 mm; p<0.001). The range of diameter of RCA (1.8 to 6.2 mm) and left coronary artery differed significantly (2 to 7.3 mm; p <0.001). Conclusion: From the results, it was evident that the diameter of left coronary artery was larger than right coronary artery in majority of CAGs

Нормативно-правові аспекти дослідження витрат торговельних підприємств

У статті досліджено міжнародні та національні нормативно-правові акти, що розкривають суть та методологічні аспекти формування витрат підприємств у бухгалтерському і податковому обліку. (In the article are investigated standard-legal sources that open methodological aspects of formation of costs of the enterprises in the accounting and tax account.

Influence of ice rheology and dust content on the dynamics of north-polar cap of Mars

The evolution and dynamics of the north-polar cap (residual-ice-cap/layered-deposits complex) of Mars is simulated with a thermomechanical ice-sheet model. We consider a scenario with ice-free initial conditions at 5 Ma before present due to the large obliquities which prevailed prior to this time. The north-polar cap is then built up to its present shape, driven by a parameterized climate forcing (surface temperature, surface mass balance) based on the obliquity and eccentricity history. The effects of different ice rheologies and different dust contents are investigated. It is found that the build-up scenarios require an accumulation rate of approximately 0.15–0.2 mm a−1 at present. The topography evolution is essentially independent of the ice dynamics due to the slow ice flow. Owing to the uncertainties associated with the ice rheology and the dust content, flow velocities can only be predicted within a range of two orders of magnitude. Likely present values are of the order of 0.1–1 mm a−1, and a strong variation over the climatic cycles is found. For all cases, computed basal temperatures are far below pressure melting

Evolution of the north-polar cap of Mars : a modelling study

Celestial-mechanical computations show that, even stronger than for Earth, Mars is subject to Milanković cycles, that is, quasi-periodic variations of the orbital parameters obliquity, eccentricity and precession. Consequently, solar insolation varies on time-scales of 104–105 years. It has long been supposed that this entails climatic cycles like the terrestrial glacialinterglacial cycles. This hypothesis is supported by the light-dark layered deposits of the north- and south-polar caps indicating a strongly varying dust content of the ice due to varying climate conditions in the past. This study aims at simulating the dynamic and thermodynamic evolution of the north-polar cap (NPC) of Mars with the ice-sheet model SICOPOLIS. The boundary conditions of surface accumulation, ablation and temperature are derived directly from the solar-insolation history by applying the newly developed Mars Atmosphere-Ice Coupler MAIC. We consider steady-state scenarios under present climate conditions as well as transient scenarios over climatic cycles. It is found that the NPC is most likely not in steady state with the present climate. The topography of the NPC is mainly controlled by the history of the surface mass balance. Ice flow, which is of the order of 1 mma−1, plays only a minor role. In order to build up the present cap during the last five million years of relatively low obliquities, a present accumulation rate of ≥ 0.25 mm water equiv. a−1 is required. Computed basal temperatures are far below pressure melting for all simulations and all times

A Study of Distributed Database Management System

A Database is a collection of data describing the activities of one or more related organizations with a specific well defined structure and purpose. A Database is controlled by Database Management System (DBMS) by maintaining and utilizing large collections of data. Distributed computer applications built from off the shelf hardware and software are increasingly common at networked computers communicate and coordinate their activity only by-passing messages.[2] Distributed Database System the database is stored/spread physically across computers or sites in different locations that are connected by some form of data communication network. They may be spread over WAN or LAN. The computers may be of different types such as IBM Mainframes, VAXs, SUN workstation, PCs etc managed by different operating systems and each fragment of the data base may be managed by a different DBMS such as Oracle, Ingress, and Microsoft SOL server. This paper presents an overview of Distributed Database System[1