Overhead proector
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This document provides an overview of an overhead projector. It discusses that the overhead projector was invented in 1870 and gained popularity in schools and businesses in the 1950s-1960s. The document describes the major parts of an overhead projector including the lamp, reflector, blower, base mirror, projection stage, and focusing components. It explains how an overhead projector works by projecting an illuminated slide onto a screen through the use of mirrors and a focusing lens. The document discusses advantages like low cost but also disadvantages like heat, noise, and bulkiness. It notes applications in classrooms and meetings and potential future replacements like document cameras and interactive whiteboards.
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Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
precisely delineate tumor boundaries from magnetic resonance imaging (MRI)
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the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.
An improved modulation technique suitable for a three level flying capacitor ...
This research paper introduces an innovative modulation technique for controlling a 3-level flying capacitor multilevel inverter (FCMLI), aiming to streamline the modulation process in contrast to conventional methods. The proposed
simplified modulation technique paves the way for more straightforward and
efficient control of multilevel inverters, enabling their widespread adoption and
integration into modern power electronic systems. Through the amalgamation of
sinusoidal pulse width modulation (SPWM) with a high-frequency square wave
pulse, this controlling technique attains energy equilibrium across the coupling
capacitor. The modulation scheme incorporates a simplified switching pattern
and a decreased count of voltage references, thereby simplifying the control
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Design and optimization of ion propulsion drone
Electric propulsion technology is widely used in many kinds of vehicles in recent years, and aircrafts are no exception. Technically, UAVs are electrically propelled but tend to produce a significant amount of noise and vibrations. Ion propulsion technology for drones is a potential solution to this problem. Ion propulsion technology is proven to be feasible in the earth’s atmosphere. The study presented in this article shows the design of EHD thrusters and power supply for ion propulsion drones along with performance optimization of high-voltage power supply for endurance in earth’s atmosphere.
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The aquaponic system of planting is a method that does not require soil usage. It is a method that only needs water, fish, lava rocks (a substitute for soil), and plants. Aquaponic systems are sustainable and environmentally friendly. Its use not only helps to plant in small spaces but also helps reduce artificial chemical use and minimizes excess water use, as aquaponics consumes 90% less water than soil-based gardening. The study applied a descriptive and experimental design to assess and compare conventional and reconstructed aquaponic methods for reproducing tomatoes. The researchers created an observation checklist to determine the significant factors of the study. The study aims to determine the significant difference between traditional aquaponics and reconstructed aquaponics systems propagating tomatoes in terms of height, weight, girth, and number of fruits. The reconstructed aquaponics system’s higher growth yield results in a much more nourished crop than the traditional aquaponics system. It is superior in its number of fruits, height, weight, and girth measurement. Moreover, the reconstructed aquaponics system is proven to eliminate all the hindrances present in the traditional aquaponics system, which are overcrowding of fish, algae growth, pest problems, contaminated water, and dead fish.
artificial intelligence and data science contents.pptx
What is artificial intelligence? Artificial intelligence is the ability of a computer or computer-controlled robot to perform tasks that are commonly associated with the intellectual processes characteristic of humans, such as the ability to reason.
› ...
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The document further emphasizes on the importance of checking the connection between the Windows and WSL environments, providing instructions on how to ensure that the connection is optimal and ready for remote debugging.
It also offers an in-depth guide on how to configure the WSL interpreter and files within the PyCharm environment. This is essential for ensuring that the debugging process is set up correctly and that the program can be run effectively within the WSL terminal.
Additionally, the document provides guidance on how to set up breakpoints for debugging, a fundamental aspect of the debugging process which allows the developer to stop the execution of their code at certain points and inspect their program at those stages.
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Applications of artificial Intelligence in Mechanical Engineering.pdf
Historically, mechanical engineering has relied heavily on human expertise and empirical methods to solve complex problems. With the introduction of computer-aided design (CAD) and finite element analysis (FEA), the field took its first steps towards digitization. These tools allowed engineers to simulate and analyze mechanical systems with greater accuracy and efficiency. However, the sheer volume of data generated by modern engineering systems and the increasing complexity of these systems have necessitated more advanced analytical tools, paving the way for AI.
AI offers the capability to process vast amounts of data, identify patterns, and make predictions with a level of speed and accuracy unattainable by traditional methods. This has profound implications for mechanical engineering, enabling more efficient design processes, predictive maintenance strategies, and optimized manufacturing operations. AI-driven tools can learn from historical data, adapt to new information, and continuously improve their performance, making them invaluable in tackling the multifaceted challenges of modern mechanical engineering.
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Overhead proector
- 1. Presented By- SANJOG ZIMBAR
- 2. INTRODUCTION HISTORY MAJOR PARTS CONSTRUCTION WORKING ADVANTAGES DISADVANTAGES APPLICATION FUTURE DEVELOPMENT
- 3. Created by FRENCH inventor “JULES DUBOSCH” in 1870 First used as cellphane roll over for police work Widely used I schools & bussiness in late 1950s and early 1960s A major manufacture in early period was the ‘3M” company But in 1953 “BUHL INDUSTRIES” became the leading contributor Very popular in 1990s as they were in almost every school in U.K. During world war 2 as a tool to train groups of survicemen.
- 4. Also called as “VIEWGRAPH” Basic but very reliable tool used to display images or written material onto a wall or screen. F0r audience and presenter can see properly. Consist of a large box containing a cooling fan & lamp, with a long arm extended above it.
- 5. Lamp and Reflector- (with condensor) Blower-(cooling Fan) Base Mirror- change the angle of the light Projection Stage- consist fresnel lens for magnifying & focusing image upword. Upper Section- 1. Focusing knob 2. mirror
- 9. With the help of focusing lens project light from an illuminated slide onto a projection screen where real image is formed. Depend upon size of transparencies used. Includes a mirror just after and before the focusing lens to fold optical system towards the horizontal. At the base the high intensity bulb with reflector is present which must be fan cooled. Condenser is most important part ,which is coollect all the light and concentrate on the fresnel lens.
- 10. On the fresnel lens the transparencies is placed. also includes manual focusing mechanism which raise or lower the position of the focusing lens.
- 11. Simple technology Equipment Cost Transparencies Annotations
- 12. Heat and Noise- fan create noise to dissipating heat created by the incandescend lamp Bulky and Heavy Equipment- difficult to carry for more than short distance . Projection Surface- required enough room Subject Matter- Display only which is write on the platform
- 13. Classrooms and Business conference rooms.
- 14. Now a days replacement for OHP , document cameras , computer projection system, and interactive whiteboard. Such system allow the presenter to project video directly from computer file using software such as microsoft ppt &libreoffice.
- 15. THANK Y0U….!