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On the Modeling of Police Patrol Operations

IEEE Transactions on Systems Science and Cybernetics 1970年第4期6卷 276-281页

作者： Larson, Richard C. Department of Electrical Engineering Operations Research Center Center for Advanced Engineering Studies Massachusetts Institute of Technology Cambridge Mass. United States

An analytical approach to several operational problems of urban police departments is introduced. In particular, the focus is on urban police patrol forces and the two important activities of a patrol car (or patrol unit) 1) answering a call for police service, 2) performing crime preventive patrol. After reviewing the traditional allocation method, a patrol travel time model and a preventive patrol model are developed. The first depicts the time required for a patrol unit to travel from its position at time of dispatch until arrival at the scene of the incident. The second relates the frequency of patrols to physical parameters and can be used to estimate the probability that a patrolling unit will intercept a crime while in progress. Applications of the models are discussed. Copyright © 1970 by The institute of Electrical and Electronics Engineers, Inc.

关键词： Probability density function Frequency estimation Predictive models Law enforcement Operations research Layout Alarm systems Detectors Legged locomotion Hazards

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Suggestions for introducing treated sea water in construction industry

Suggestions for introducing treated sea water in constructio...

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International Conference on Newer trends and Innovations in Mechanical engineering, ICONTIME 2020

作者： Kalyana Chakravarthy, P.R. Aishwarya, S. Department of Civil Engineering School of Engineering Vels Institute of Science Technology and Advanced Studies Chennai Tamil Nadu India

Day by day the water scarcity is getting increased and that too in developing countries like ''India", facing water problems frequently. The need for conservation of fresh water has become mandatory. Here the world's water content is about 71%, and in that the ocean and sea water holds about 96.5%. As indicated by the report of the ''World Metrological Organization" (WMO), the greater part of the total populace won't have enough drinking water by 2025. In order to reduce the usage of fresh water, an alternate recourse (Treated Sea Water) is introduced in the construction industry (i.e.) for the concrete mixing and curing. In this paper the properties of sea water and traditional water are considered. The conceivable outcomes of salt water utilized in concrete for casting and curing are seen. This paper additionally focuses on the variables influencing the quality of cement blended as concrete and cured with ocean water are examined and a few proposals to those issues were given. © 2020 Elsevier Ltd. All rights reserved.

关键词： Tensile strength

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Smart Crutch: A Boon for Rehabilitative Patients 2

Smart Crutch: A Boon for Rehabilitative Patients

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2nd International Conference on Computer, Communication and Control, IC4 2024

作者： Dhivya, A. Josephin Arockia Hemalatha, R.J. Rubi, Jaya Vels Institute of Science Technology and Advanced Studies Department of Biomedical Engineering Tamil Nadu Chennai India

ISBN: (纸本)9798350387933

In the last decade, physiotherapists have a remedy or a solution for elders and rehabilitative patients easily in a rapid manner, which makes the physiotherapists get to a conclusion rapidly;previous studies clearly show that when the patients excessively exercise or rehabilitation process, it affects the health of the elders extensively. Walkers play a very important role in the field of rehabilitation. Clinical decisions should be taken rapidly, effectively, and efficiently. These walking aids are highly recommended and suggested for elders suffering from back pain, spondylitis, and sports injury. This smart crutch is used to guide the patients properly so they do not get any pain due to excessive usage. Our device alerts the user in the form of a haptic when he/she is applying excessive force on the walker. This reduces the overuse of the device, which leads to severe pain. Our main motive is to enhance the patient's life by designing a Smart crutch that alerts them if they overuse it. We also implemented a few parameters, such as a body posture management system where the user gets notified when his body bends too forward or backward. Also, it provides automatic lighting when the user is in a dark background. The user will be notified in terms of sound buzzer or light. Our ultimate goal is to help the patients and elders facing issues using rehabilitation aids. Although varicose veins are a prevalent condition, they disproportionately impact individuals who endure extended periods of standing or reclining. One potential treatment for varicose veins is vibration therapy, which involves applying vibration to the affected area to improve blood flow and reduce pain and swelling. The accelerometer sensor will detect the angle of the leg, and the Arduino will process the data and send it to the Node MCU. The Node MCU will be responsible for triggering the vibration therapy based on the angle of the leg detected by the accelerometer. © 2024 IEEE.

关键词： Patient rehabilitation

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Design, analysis and optimization of all terrain vehicle chassis ensuring structural rigidity

Design, analysis and optimization of all terrain vehicle cha...

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2020 International Conference on Materials, Manufacturing and Mechanical engineering for Sustainable Developments, ICMSD 2020

作者： Jacob, S. Thiruvarasan, V. Surendhar, S. Senthamizh, R. Department of Automobile Engineering Vels Institute of Science Technology and Advanced Studies Pallavaram Chennai600117 India

The purpose of this project is to study, analyze the previous year BAJA roll-cage chassis vehicles to fix fault and design a new chassis with better performance by optimizing the weight and ergonomics. The design panel has identified certain area to optimize the vehicle to bring down the overall volume like, engine compartments, driver cabin, legroom, suspension hard points, and steering area. Different experimental designs using the Baja SAE regulations for 2020 and Mega ATV championship 2020 directive as a standard for design selection. Primary FEA investigation was carried out on prior designs and the results are taken into account for improving the overall aesthetics of the vehicle. The conveyance is designed with given guidelines and rulebook versions of SAE BAJA 2020 and MAC 2020 in all aspects. As SAE BAJA rule book is considered to be in macrocosmic standard after the completion of the CAD model, the roll cage and other subsystems of the conveyance has been tested in FEA methods to bring out the best design output and to minimize the chance of failure of the components. Robust engineering techniques with sound knowledge on ergonomics and vehicle dynamics have allowed our team to produce an efficient vehicle for the competitions in future. © 2021 Elsevier Ltd. All rights reserved.

关键词： Off road vehicles

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Design of a Solar Fed Phase Shift Full Bridge Converter for Microgrid 4

Design of a Solar Fed Phase Shift Full Bridge Converter for ...

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4th International Conference on Electronics and Sustainable Communication Systems, ICESC 2023

作者： Panda, Harshini Pradeep Kumar, S. Vels Institute of Science Technology and Advanced Studies Pallavaram Electrical and Electronics Engineering Tamilnadu Chennai India

ISBN: (纸本)9798350300093

The work suggests utilising the different optimization techniques to design a solar power fed Phase Shift Full Bridge (PSFB) DC-DC converter to feed a 48 Volt DC microgrid which can be used to satisfy the voltage levels of household appliances. Microgrid is a compact network of electricity consumers with a nearby power source that is typically connected to a centralised grid but has the capacity to operate on its own. These Solar-powered fed PSFBs can also be used to charge these batteries. Solar energy is employed as the converter's input source since it is abundant and simple to install, making it a viable renewable energy source. A MPPT approach is used to get the most power out of PV panels. The duty cycle of the switching signals produced by the MPPT control algorithm are sent to the converter. Salp Swarm Algorithm (SSA) and Emperor Penguin Optimization (EPO) serves as the control algorithm in this situation. They are metaheuristic algorithm that makes sure the PV panel functions at the best voltage and current in order to harvest the most electricity under all climatic situations. The remainder of the solar energy is used to charge the battery when the converter reaches the desired power. By Using Matlab 2015a/Simulink, the overall system efficiency is calculated based on the metaheuristic approach utilised for MPPT tracking. This article suggests a solar-powered fed PSFB that is SSA and EPO based, which works well as an approach for feeding the energy source to the microgrid and battery. © 2023 IEEE.

关键词： Optimization

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Design and Implementation of Acquire Carriage for Disabled people in a Visual Surveillance Using Character Recognition

Design and Implementation of Acquire Carriage for Disabled p...

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International Conference on Recent Advances in Electrical, Electronics, Ubiquitous Communication and Computational Intelligence 2022, RAEEUCCI 2022

作者： Nivash, S. Ganesh, E.N. Manikandan, T. Vels Institute of Science Technology and Advanced Studies Chennai India Rajalakshmi Engineering College Chennai India

In certain cases, persons with disabilities may be forced to rely on others for the performance of their duties. Blindness is one of the impairments that might be encountered. Up to this point, there has been N number of solutions presented that make life easier for visually impaired individuals. One of the problems they face on a daily basis is making an independent purchase of a product they need. To solve this issue, the approach is to utilize a camera to record a picture, which is then processed using the tesseract method to extract text from the image, which is then transformed into an audio file that can be heard using headphones. Following the implementation of this strategy, during this shopping trolley technology to detect the item put with machine learning and precision location discover a person will be used to locate a person in the shopping trolley. © Published under licence by IOP Publishing Ltd.

关键词： Purchasing

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Modification and analysis on fatigue study in universal joint of an automobile vehicle

Modification and analysis on fatigue study in universal join...

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International Conference on Newer trends and Innovations in Mechanical engineering, ICONTIME 2020

作者： Venugopal, S. Hithesh, K. Karikalan, L. Department of Automobile Engineering VELS Institute of Science Technology and Advanced Studies Pallavaram Chennai600117 India

The main task, especially targets at checking out the standard joint at exceptional operating angles and specific materials in order that the time to failure of the accepted joint may be reduced to a degree. The strength generated inside the engine due to the fact the stop result of combustion of gasoline is converted to wheels through the transmission gadget inside the car. This machine in particular encompasses device container, propeller shafts, tremendous joints and differential gears. The stress shaft imparts torque from the engine (Kamal et al., 2011). The screw ups that added on to the energy shaft is especially because of vibration strain, fatigue, bending pressure or maybe the misalignment of the driveshaft. a majority of those defects especially because of the overloading or even repeated extra time use (Hummel and Chassapis 1998). The main result of all these are the pre-mature failure of the drive shaft at the operation times. For almost all the cases, the failure occurs at the area around the universal joints, as the angle difference and the velocity variations occurs in that area. © 2020 Elsevier Ltd. All rights reserved.

关键词： Fatigue of materials

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Improved Deepmaxoutmodel for Disease Prediction in Healthcare IoT Cloud System 3

Improved Deepmaxoutmodel for Disease Prediction in Healthcar...

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3rd IEEE International Conference of Electron Devices Society Kolkata Chapter, EDKCON 2024

作者： Preetha, P. Packialatha, A. Vels Institute of Science Technology and Advanced Studies Department of Computer Science Engineering Tamilnadu Chennai India

ISBN: (纸本)9798350374643

The Internet of Medical Things IoMT has grown rapidly due to the growing popularity of wearable technology and its applications in health monitoring systems. The IoMT significantly reduces the death rate by facilitating early sickness identification. Predicting cardiac disease is among the most significant issues with clinical dataset analysis. Finding the key components of heart disease prediction is the goal of the suggested investigation, which makes use of machine learning techniques. Despite several studies on the issue, the accuracy of the findings on the diagnosis of heart illness is low. The purpose of this paper is to provide an innovative framework for healthcare monitoring that includes the following phases. Data preprocessing, feature extraction, acquisition of data, and prediction are the primary stages. The process of acquiring data is at the IoTs layer. The medical data is considered in this case (benchmark datasets of different illnesses). The data pre-processing operations of data cleaning and data filtering at the cloud layer are applied to the data obtained from the IoT sensors (considering the dataset), where the data normalization process will take place. Subsequently, statistical features and raw features are extracted. The multi-layered Deepmaxout model will predict the diseases during in the prediction phase. Lastly, the evaluation of the suggested approach is compared to existing methods using several types of metrics. © 2024 IEEE.

关键词： Prediction models

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Study the enhanced mechanical properties of Al/B4C metal matrix composite

Study the enhanced mechanical properties of Al/B4C metal mat...

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作者： Abhishek Krishna Sai, A. Chandrasekaran, M. Vinod Kumar, T. Pugazhenthi, R. Department of Mechanical Engineering Vels Institute of Science Technology & Advanced Studies Chennai600 117 India

The purpose of this study is to see how Boron carbide (B4C) reinforcement affects the mechanical and wear behaviour of Al7010 alloy in dry sliding conditions at room temperature. The liquid casting method was used to create the aluminium 7010 with B4C metal matrix composites. The flux K2TiF6 was used to address in composites with 5–20 vol% B4C, the wetting problem between AA7010 and B4C, which aids in the development of undesirable phases at interfaces. A pin on disc equipment was used to conduct wear tests on AA7010- composites against an OHNS disc. The wear tests were carried out at a sliding speed of 0.6 m/s, a distance of 1200 m, and loads of 25 and 50 N. The wear resistance of AA 7010 –B4C composites was found to be superior to that of the base alloy. After a short sliding distance, the coefficient of friction achieved a steady-state value. The composites' wear rate and coefficient of friction are significantly reduced when compared to base alloy, and it reaches its lowest value at 10 vol% B4C under all load conditions. The coefficient of friction reduces as the sliding distance rises. The B4C reinforced AA7010 composites had good wear resistance, with 10 vol% B4C being the best for achieving the lowest wear rate under all load circumstances. The composites' hardness and tensile strength improve as the B4C level rises. SEM photos were used to examine the microstructures of the worn surfaces. © 2022

关键词： Wear of materials

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E-Crutch: A Promising tool for Rehabilitative Patients 10

E-Crutch: A Promising tool for Rehabilitative Patients

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10th International Conference on Biosignals, Images and Instrumentation, ICBSII 2024

作者： Arockia Dhivya, A. Josephin Hemalatha, R.J. Rubi, Jaya Vels Institute of Science Technology and Advanced Studies Department of Biomedical Engineering Tamil Nadu Chennai India

ISBN: (纸本)9798350350951

In earlier days,physiotherapists trained the rehabilitative patients in a progressive manner such as giving them a solution for their aid. But the major disadvantage is to find the issues faced by the elders while using the crutch without their knowledge. Our designed e-crutch helps us to train and alert the user to use the device wisely without any side effects. It majorly helps the patients suffering from long term spondylysis,fracture and spinal stenosis. The pain is in a excessive manner since the patients are unaware of their usage. The area which we highlight in our device is force,acceleratio,non invasive varicose vein therapy and lighting system. The first case is alerting the user when he s putting excessive force on the crutch without his/her knowledge will be notified by a haptic vibration. The posture of the body is a very important factor in the field of physiotherapy where the posture condition of patient moving excessively forward and backward will be displayed in the Lcd display present in the crutch module. A non invasive therapy system is also enclosed with the crutch to give a relief based on temperature and these modules together is termed a E-crutch. The notification of the user parameters will be sent to the care taker via GSM module. This particularly helps in the case of Alzheimer affected individuals. So,our ultimate aim is to design a E-crutch which will be useful to the elderly society. © 2024 IEEE.

关键词： Noninvasive medical procedures

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