Management System for an Apartment

One of the fundamental aspects of society is the rental housing issue. If one searches physically nowadays, it is difficult to find acceptable housing in urban regions. However, the landowner must also rent the residence. A building owner may lose money if it is difficult to attract tenants only to post a lease sign on it. In this situation, a shared online platform might be quite important. The goal of the project is to create a standard web-based online platform for renters and homeowners so that both parties may profit from the system. This essay discusses the creation of online apps for citizens, through intelligent communication with the homeowner, owners and renters may register and tenants can have residences for rent. In this, a standard web application for smart house rentals has been created for both renters and homeowners. This online application is incredibly user-friendly, and effective, and it offers a lot of distinctive features that aren\u27t provided by other house rental websites that are now available in Bangladesh. Using online apps that have been built, tenants may register with their phone numbers, store identifying information, look for available homes, communicate with homeowners, and select a suitable home. Homeowners may sign up for the system as well

Transport in Ultra-Thin Heat Pipes for Low Power Applications

Heat pipes and vapor chamber heat spreaders offer a potential solution to the increasing thermal management challenges in thin-form-factor mobile computing platforms, where efficient spreading is required to simultaneously prevent overheating of internal components and formation of hot regions on the device exterior surfaces. The operating conditions for such applications are also characterized by low input heat fluxes, which in combination with the geometric constraints, give rise to unique performance limitations that require examination. This thesis aims to characterize the steady-state and transient heat pipe performance limitations unique to such ultra-thin form factors, and characterizes the key heat transfer mechanisms governing the performance. A thermal resistance network model and a detailed two-dimensional model are used to analyze the steady-state performance of heat pipes under these conditions. A broad parametric study of geometries and heat inputs using the reduced-order model helps delineate the performance thresholds within which the effectiveness of a heat pipe is greater than that of a comparable solid heat spreader. A vapor-phase threshold unique to ultra-thin heat pipes operating at low power inputs is observed. At this threshold, the vapor-phase thermal resistance imposed by the saturation pressure/temperature gradient in the heat pipe causes a crossover in the thermal resistance, where performance becomes worse than a solid heat spreader. The higher-fidelity numerical model is used to assess the accuracy of the thermal resistance network model and to verify the validity and applicability of each assumption made regarding the transport mechanisms. Key heat transfer mechanisms not captured by the reduced-order thermal network models are identified. These include the effect of boundary conditions on the interface mass flux profile, convective effects on the vapor core temperature drop, and two-dimensional conduction on smearing of evaporation/condensation mass flux into the adiabatic section. Lastly, the numerical model was used to compare the transient performance between ultra-thin heat pipes and heat spreaders during the initial start-up period was conducted to demonstrate an initial crossover period under which the performance of the heat pipe was lower than that of a heat spreader. This thesis establishes the performance thresholds of ultra-thin form factor heat pipes operating at low input heat fluxes under steady-state operation, and identifies key performance traits that must be considered under transient operation

Study of a High-Efficient Wide-Bandgap DC-DC Power Converter for Solar Power Integration

This research focuses on the design and analysis of a Boost cascaded Buck-Boost (BoCBB) power converter with super high efficiency in electric power conversion. The BoCBB power converter is based on emerging wide-bandgap silicon-carbide (SiC) MOSFETs and Schottky diodes, which have only 1/6 times of power loss in traditional silicon power semiconductor devices. The BoCBB power converter can be widely applied in solar harvesting for the National Aeronautics and Space Administration (NASA), military bases and electric utilities, as well as high-power DC motor drives for the electric vehicles, robotics, and manufacturing and product lines. This research analyzed the topology and energy efficiency of a 3-kW BoCBB power converter. The energy efficiency of the SiC-based BoCBB power converter was calculated under various switching frequencies (20-kHz – 100-kHz) and was first tested by a simulation study of solar power integration in a 400-Vdc distribution microgrid in Matlab/Simulink environment. The design of 50-kHz in switching frequency revealed to be optimal in overall system performance. This conclusion was further verified by experimental tests. The experimental tests demonstrated a high efficiency of above 97% in power conversion. In order to improve the power quality of the BoCBB power converter for time-varying solar radiation, a novel sliding-window-combined (SWC) hysteresis control technique was proposed and preliminarily verified by a simulation study to enhance transients of a power grid

Different Forensic Tools on a Single SSD and HDD, Their Differences and Drawbacks

With the increase in technology comes great innovations. One such transformation is changing from Hard Disks to Solid State Drives. Solid State Drives generally known as SSD’s is a non-volatile memory which became a key storage system nowadays. SSD\u27s are nothing but a storage device like Hard Disks but many times faster with a very much lower power consumption. They are smaller in size and more efficient, the mechanism by which SSDs store and modify data is intrinsically different from hard disk drives. Each innovation has its advantages as well as drawbacks. When it comes to digital forensics working on SSD’s is relatively new. It has been a challenge for the cyber-crime investigators ever since the evolution of SSD\u27s, it was easy in hard disks to retrieve deleted data but when it comes to SSD\u27s, they can automatically retrieve or alter data whenever they are connected to power even without an interface which results in major evidence loss or contamination. There are different types of SSD\u27s which do not function similarly is also a challenge to a cybercrime investigator. The main purpose of this paper is to describe the evolution of SSD\u27s and creating image files of a single SSD and Hard Disk using different forensic tools and comparing results. We create an evidence file and pass it to SSD and HDD with multiple permutations and combinations, then we format the disks and create an image file of both the disks to analyze using a forensic tool. We will also analyze how many evidence files are being deleted completely from both the devices by comparing them with the original number files we passed and the original hits we obtained while performing the analysis on single evidence folder

Implementing Sharepoint Migration in a Software Development Firm

Company ABC, established in 2009, has headquarters in Fremont, California. Company ABC branches out to NC and TX. It had visions to travel beyond horizons. Company ABC offers a wide range of IT services that are needed for business development like Staffing Solutions, Consulting, Software Development, Cloud Computing and many other services. Company ABC’s largest product is User Profile System (UPS). User Profile System store data on a server by creating logs. This makes the data hugely extensible and can be distributed across the clients very easily. Company ABC designs its consumer Profile System to collect modified information which can be explored easily. This is to not just listen to the clients but communicate with them and build trust. The UPS of Company ABC enable to run and allocate resources to especially definite set of applications. Here the historical data of the users is analyzed to generate updated users profile. Thus application can give away modified online services to end users in genuine time basis. The consumer Profile System provides hold up to billions of end user through number of varied applications with different necessities end logic. The system generalizes the requirements of online user-profile applications and creates a common conceptual stratum which meets the specific requirement. Microsoft SharePoint was being used by this application to customize and maintain websites. Various versions of SharePoint are used as critical document management repositories, customer extranets, business reporting tools, and many other use cases

Evaluation of Self-Healing of Asphalt Concrete through Induction Heating and Metallic Fibers

Healing by means of induction heating is promising, however the effectiveness of this technology is yet to be demonstrated due to limited studies on cracking damage and fracture resistance property recoveries after healing. The objective of this study was to test the hypothesis that a new generation of asphaltic materials could be artificially healed while in-service by embedding metallic fibers in the mix and by applying a magnetic field at the surface. To achieve this objective, an open-graded friction course (OGFC) was successfully designed and prepared to incorporate up to 5% steel and aluminum fibers by weight of the mix. Based on results of the study, it was found that the control mix and the mix prepared with aluminum fibers exhibited a greater ultimate load at failure prior to healing, than those specimens with steel fibers. Yet, differences were not statistically significant. The induction heating experiment was conducted successfully and showed the feasibility of inducing Eddy current in the metallic fibers without contact to the specimens. After healing, the control mix displayed the highest ultimate load after healing, although unsuccessfully heated through Eddy current; yet neither were these differences statistically significant. These outcomes indicate that other healing mechanisms were present due to the recovery period, which allowed the control specimens to heal during the rest period. Healing efficiency showed the highest results for the control specimen that approached 85%. The healing efficiency for the specimen with aluminum and steel fibers was 72 and 62%, respectively. Microscopic image analysis demonstrated that induced cracks healed efficiently during the healing period. Additionally, Loaded Wheel Track (LWT) test was conducted to analyze the rutting performance of the asphalt mixtures with steel and aluminum fibers. The results indicated that the mixture with a high percentage of steel fibers (5.0%) performed better than the ones with less content, while the mixtures with aluminum fibers did not perform well

Introspection on the Research Avenues of Robotic Process Automation as a Service (RPAaaS)

One of the newest business and technology developments is cloud computing, where several users approach the Cloud to complete various tasks. Cloud RPA is a technology that uses robotic process automation on Cloud-native using artificial intelligence. RPA-as-a-service: an automation software or bot that any user with an internet connection can use in the Cloud. It is an automaton self-service in cloud drag-and- drop actions and different GUI as a user-friendly software service. Cloud RPA ensures users automate any process via the Internet on the Cloud and can access it in their browser. RPA enables an intelligent agent to replicate typical manual decisions, such as rule based, well-structured ones involving vast amounts of data in a digital system, and eliminate operational errors.&nbsp

Optimization of 8-Plate Multi-Resonant Coupling Structure Using Class-E\u3csup\u3e2\u3c/sup\u3e Based Capacitive-Wireless Power Transfer System

Capacitive-wireless power transfer (CPT) effectively charges battery-powered devices without a physical contact. It is an alternative to inductive-wireless power transfer (IPT) which is available in the present market. Compared with IPT, CPT offers flexibility in designing the coupling section. Because of its flexibility, CPT utilizes various coupling methods to enhance the coupling capacitance. Misalignment is a common issue in any WPT system. Among IPT and CPT, IPT has better performance for misalignments, but it requires bulk and expensive ferrite core to attain a high coupling coefficient. This work focuses on designing a CPT system to minimize the impact of misalignments. In this research, a novel 8-plate multi-resonant Class-E2 CPT system is developed to improve the performance of the CPT system for misalignments. The proposed CPT model expands the resonant frequency band, which results in better performance for misalignments compared with the regular 4-plate CPT system. The 8-plate coupling structure is designed to charge a 100 Ah drone battery. For this application, the coupling is formed when the drone lands on the capacitive- wireless charging pad. This work also presents the analysis of several dielectric materials with different dielectric constants. A well-designed capacitive coupler can effectively limit harmonics during the interaction between transmitter and receiver. Also, the effect of coupling plate shape is identified on the CPT system. The hardware tests indicate the round-shaped plates have better stability in coupling capacitance with the variation in frequency. The effect of misalignments is studied through the impedance tracking of the Class-E2 power converter. Impedance plots for 50 μH, and 100 μH resonant inductors are used to determine input current peak for each case. Additionally, hardware tests are performed to study the variation of input current and output voltage for a range of frequencies. The test results indicate the efficiency at optimal impedance point for a resonant inductor with 50 μH is 8% higher compared to the CPT with a 100 μH resonant inductor which highlights the effects of the resonant inductor on efficiency. The zero-voltage-switching (ZVS) limits are also identified for varying frequencies and duty cycles. Later in this research, the optimal design of the Class-E rectifier is identified to enhance the power transfer. Several cases were considered to investigate the impact of the secondary inductor on the output voltage and the ZVS property. Hardware tests validate that under optimal conditions the efficiency of the Class-E2 based CPT system improves by 18% compared with Ar \u3e\u3c 1. Further work presents the advantages of 8-plate multi-resonant coupling for misalignments. The proposed model has a simple design procedure which enhances the power flow from the inverter to the rectifier section. The hardware results of the proposed 8-plate multi-resonant coupling show an increase in efficiency to 88.5% for the 20.8 W test, which is 18% higher than regular 4-plate coupling. Because of the wider resonant frequency band [455- 485 kHz], compared with regular 4-plate coupling, the proposed design minimized the output voltage drop by 15% for 10% misalignment. Even for large misalignments, 8-plate improves the CPT performance by 40% compared with 4-plate coupling

Talent Jet

In today\u27s world, finding a job is like a rat race in every professional field. The scenario is such that finding jobs that fit the skill sets and interests takes much work for job seekers. On the other side, recruiters face similar challenges in finding the finest candidate to match their requirements. Talent jet is a website with unique ingredients to solve all these challenges. Talen jet provides an easy and convenient search application for job seekers to find their desired job and recruiters to find suitable candidates. Talent jet will provide a platform where job seekers and recruiters can interact with each other irrespective of geographical barriers, with just a click. That is why Talent jet is an important project. The website is developed by our team from scratch with all the required functionality to make the website user-friendly. It will contain mainly three user roles jobseeker, recruiter, and administrator. All of them will have a different console with unique functions. Jobseekers need to set up an account with the website before applying for a position. Recruiters will post job openings and contact applicants. The administrator will manage users and job postings. The home page will be the landing page after signup and signing in . It will be very interactive with different useful sections to navigate. To develop this website, we have used reliable and robust programming language like Java, with spring boot framework for back-end. HTML, CSS, and Java script for front-end. MySQL for creating database and tables to store the data. Talent Jet will be release out and will be available to all users from 29/11/2022, Tuesday