A Preliminary Study of the Dynamic and Control of the Solar Sail

2014 ◽  
Vol 590 ◽  
pp. 371-375
Author(s):  
Ximena Celia Méndez Cubillos ◽  
Rute Cardoso Drebes
Keyword(s):  
Low Cost ◽  
Outer Space ◽  
Solar Sail ◽  
Enabling Technology ◽  
Solar Sails ◽  
Major Objective ◽  
Preliminary Study ◽  
Human Desire ◽  
The Cost ◽  
And Control

The research and curiosity about outer space had been always constant. Looking for others planets, ways, civilizations wherever the exploration of the space will be a thing which the human desire. The challenge here for several years was the obtaining energy sufficient for the application of the missions. So, presently the major objective in the missions is offer more autonomy to the spacecrafts and consequently to lower the cost of the missions. Solar Sails have long been envisaged as an enabling technology because is a promising low-cost option for space exploration for it uses for propulsion an abundant resource in space: solar radiation. In this paper a simple model of solar sail is shown and studied your performance of Control System.

scholarly journals Multi-Blockchain-Based IoT Data Processing Techniques to Ensure the Integrity of IoT Data in AIoT Edge Computing Environments

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3515
Author(s):  
Sung-Ho Sim ◽  
Yoon-Su Jeong
Keyword(s):  
Low Cost ◽  
Third Party ◽  
Monitoring And Control ◽  
Constant Size ◽  
Computing Environments ◽  
Iot Devices ◽  
Cloud Servers ◽  
The Cost ◽  
Processing Techniques ◽  
And Control

As the development of IoT technologies has progressed rapidly recently, most IoT data are focused on monitoring and control to process IoT data, but the cost of collecting and linking various IoT data increases, requiring the ability to proactively integrate and analyze collected IoT data so that cloud servers (data centers) can process smartly. In this paper, we propose a blockchain-based IoT big data integrity verification technique to ensure the safety of the Third Party Auditor (TPA), which has a role in auditing the integrity of AIoT data. The proposed technique aims to minimize IoT information loss by multiple blockchain groupings of information and signature keys from IoT devices. The proposed technique allows IoT information to be effectively guaranteed the integrity of AIoT data by linking hash values designated as arbitrary, constant-size blocks with previous blocks in hierarchical chains. The proposed technique performs synchronization using location information between the central server and IoT devices to manage the cost of the integrity of IoT information at low cost. In order to easily control a large number of locations of IoT devices, we perform cross-distributed and blockchain linkage processing under constant rules to improve the load and throughput generated by IoT devices.

Space Elevator

2011 ◽  
pp. 312-331
Author(s):  
Paul E. Nelson
Keyword(s):  
High School ◽  
Cost Saving ◽  
Science Fiction ◽  
Low Cost ◽  
Outer Space ◽  
Daily Basis ◽  
Easy Access ◽  
The World ◽  
Survey Results ◽  
The Cost

Currently, transporting cargo into Outer Space is not only expensive, but a complicated and prolonged process. The Space Shuttles used today are inadequate, overused and obsolete. At this time, there are efforts all around the world to make Space more accessible. There have been many proposals to solve the Space transportation dilemma. One proposal is the creation of a Space Elevator. The Space Elevator would provide low-cost, easy access to Space by dramatically reducing the cost of sending cargo into Space. A $10-$100 per pound the Space Elevator would provide an astounding cost-saving compared to the tens of thousands of dollars per pound it costs today. This low-cost access to Space would make it possible to substantially increase the amount of cargo that could be sent into Space on a daily basis. The first part of this paper describes how the Space Elevator is expected to work, and the advantage of access to space via the SE versus using primarily rockets. A compendium of information from a variety of sources is included in order to explain how the Space Elevator would be designed, constructed, and how it could solve the problems of transporting cargo into Space easily, cheaply, and frequently. The Space Elevator is a relatively new topic in the area of realistic science concepts and was merely science fiction not too long ago. The Space Elevator (“SE”) concept has only been in the spotlight in the last five years due to the work of Dr. Bradley Edwards of Carbon Designs Inc. Acceptance of the SE will be a difficult task for many reasons. One of these is that most people do not know about the SE concept, and those who do, tend to have trouble believing it is possible to build. In order to determine the best way of integrating the SE concept into society, a survey was conducted at Darien High School. The survey included such topics as the naming of "The Space Elevator," and how best to get the younger generation interested in the idea. The second part of this paper describes how to utilize the survey results to further the SE concept.

Preliminary Study on Piezoelectric Actuation Solution Proportioner

2014 ◽  
Vol 532 ◽  
pp. 13-17
Author(s):  
Wei Zheng ◽  
Xue Feng Yao ◽  
Jing Shi Dong ◽  
Bo Da Wu
Keyword(s):  
Simple Structure ◽  
High Reliability ◽  
Low Cost ◽  
Piezoelectric Actuation ◽  
Dilution Ratio ◽  
Mechanical Structure ◽  
Physical Prototype ◽  
Preliminary Study ◽  
Conventional Solution ◽  
And Control

The conventional solution proportioner, which is costly and bulky with complex mechanical structure, cant meet the current requirements of the apparatus, such as miniaturization, high reliability and accuracy. Based on the piezoelectric actuation technique, this paper proposed and developed a solution proportioning technique of large dilution ratio. And on the basis of this technology we produced a physical prototype, in which piezoelectric vibrators are used as the main power units and control parts because piezoelectric vibrators are featured with low cost, compact volume, simple structure, non-pollution and others. The physical prototype can be used to dilute various sample solutions of various proportions for one or more times.

scholarly journals Optimized and scalable synthesis of magnetic nanoparticles for RNA extraction in response to developing countries' needs in the detection and control of SARS-CoV-2

2020 ◽  
Author(s):  
Julio C. Chacón-Torres ◽  
C. Reinoso ◽  
Daniela G. Navas-Leon ◽  
S. Briceño ◽  
G. González
Keyword(s):  
Magnetic Nanoparticles ◽  
Low Cost ◽  
Rna Extraction ◽  
International Health ◽  
Private Companies ◽  
Wide Range ◽  
Chemical Availability ◽  
Scalable Synthesis ◽  
The Cost ◽  
And Control

Abstract Ecuador is one of the most affected countries, with the coronavirus disease 2019 (COVID-19) infection, in Latin America derived from an ongoing economic crisis. One of the most important methods for COVID-19 detection is the use of techniques such as real time RT- PCR based on a previous extraction/purification of RNA procedure from nasopharyngeal cells using functionalized magnetic nanoparticles (MNP). This technique allows the processing of ~10,000 tests per day in private companies and around hundreds per day at local Universities guaranteeing to reach a wide range of the population. However, the main drawback of this method is the need for specialized MNP with a strong negative charge for the viral RNA purification to detect the existence of the SARS-CoV-2 virus. Here we present a simplified low cost method to produce 10 g of nanoparticles in 100 mL of solution that was scaled to one litter by parallelizing the process 10 times in just two days and allowing for the possibility of making ~50,000 COVID-19 tests. This communication helps in reducing the cost of acquiring MNP for diverse biomolecular applications supporting developing country budgets constraints and chemical availability specially during the COVID-19 International Health Emergency.

scholarly journals Optimized and scalable synthesis of magnetic nanoparticles for RNA extraction in response to developing countries' needs in the detection and control of SARS-CoV-2

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Julio C. Chacón-Torres ◽  
C. Reinoso ◽  
Daniela G. Navas-León ◽  
Sarah Briceño ◽  
Gema González
Keyword(s):  
Magnetic Nanoparticles ◽  
Low Cost ◽  
Rna Extraction ◽  
International Health ◽  
Private Companies ◽  
Wide Range ◽  
Chemical Availability ◽  
Scalable Synthesis ◽  
The Cost ◽  
And Control

Abstract Ecuador is one of the most affected countries, with the coronavirus disease 2019 (COVID-19) infection, in Latin America derived from an ongoing economic crisis. One of the most important methods for COVID-19 detection is the use of techniques such as real time RT-PCR based on a previous extraction/purification of RNA procedure from nasopharyngeal cells using functionalized magnetic nanoparticles (MNP). This technique allows the processing of ~ 10,000 tests per day in private companies and around hundreds per day at local Universities guaranteeing to reach a wide range of the population. However, the main drawback of this method is the need for specialized MNP with a strong negative charge for the viral RNA extraction to detect the existence of the SARS-CoV-2 virus. Here we present a simplified low cost method to produce 10 g of nanoparticles in 100 mL of solution that was scaled to one litter by parallelizing the process 10 times in just two days and allowing for the possibility of making ~ 50,000 COVID-19 tests. This communication helps in reducing the cost of acquiring MNP for diverse biomolecular applications supporting developing country budgets constraints and chemical availability specially during the COVID-19 International Health Emergency.

The role of hybrid computers in simulation and control

SIMULATION ◽  
1971 ◽  
Vol 16 (3) ◽  
pp. 112-115 ◽  
Author(s):  
Frank W. Paul
Keyword(s):  
Low Cost ◽  
Cost Effective ◽  
Analog Computer ◽  
Computer Usage ◽  
Cost Effective Approach ◽  
Specialized Technique ◽  
Hybrid Computer ◽  
The Cost ◽  
And Control

This paper discusses the present atzd futtsre of hybrid computation: Has it reached its zenith, or will it continue to develop as a powerful but specialized technique? The minicomputer has made current hybrid systems practical by providing a low-cost digital component. Unless the cost of the analog computer is reduced, the increasing power and decreasing cost of the minicomputer may severely limit future hybrid computer usage by providing an economic all-digital alternative. However, problems with alternative solution techniques indicate that for some important applications the hybrid computer will be the most cost- effective approach.

scholarly journals Harmonic Analyzer Using ATMEGA 328P

2019 ◽  
pp. 694-698
Author(s):  
Christie Anil Joseph ◽  
Sumant Sarmokadam ◽  
Dr. Usha Surendra
Keyword(s):  
Power Systems ◽  
Power Supply ◽  
Remote Monitoring ◽  
Low Cost ◽  
Data Logging ◽  
Technical Improvement ◽  
Harmonic Analyzer ◽  
Commercial Applications ◽  
The Cost ◽  
And Control

The technical improvement in Power electronics and Control system industries has made the linear consumer loads to dominate by sensitive and sophisticated non-linear consumer loads. These have a major impact on the power systems, causing increase in harmonics distortion. This paper proposes a hardware design to develop a Harmonic Analyzer along with Arduino ATMEGA 328P, that can be able to analyze up to 15th harmonic of an alternating current power supply. The Harmonic analyzer has been developed considering the cost, accomplished with respect to accuracy, easy modifications through coding, remote monitoring and data logging. The developed low cost handheld product may be used for industrial as well as commercial applications.

Fruit and Leaves Disease Prediction Using Deep Learning Algorithm

2019 ◽  
pp. 8-16
Author(s):  
Sathya V ◽  
Rafidha H ◽  
Sumitha Rani G
Keyword(s):  
Plant Disease ◽  
Learning Algorithm ◽  
Low Cost ◽  
Disease Diagnosis ◽  
Plant Diseases ◽  
Production Plant ◽  
Deep Learning Algorithm ◽  
Long Time ◽  
The Cost ◽  
And Control

The purpose of Agriculture is not only to feed ever growing population but it’s an important source of energy and a solution to solve the problem of global warming. Plant diseases are extremely significant, as that can adversely affect both quality and quantity of crops in agriculture production. Plant disease diagnosis is very essential in earlier stage in order to cure and control them. Generally the naked eye method is used to identify the diseases. In this method experts are involved who have the ability to detect the changes in leaf color. This method involves lots of efforts, takes long time and also not practical for the large fields. Many times different experts identify the same disease as the different disease. This method is expensive as it requires continuous monitoring of experts. Tree leaves and fruit diseases can increase the cost of agricultural production and may extend to total economic disaster of a producer if not cured appropriately at early stages. The producers need to monitor their crops and detect the first symptoms in order to prevent the spread of a plant disease, with low cost and save the major part of the production. Hiring professional agriculturists may not be affordable especially in remote isolated geographic regions. Machine learning algorithm in image can offer an alternative solution in plant monitoring and such an approach may anyway be controlled by a professional to offer his services with lower cost. It includes image segmentation and image classification approach to predict various types of diseases using Otsu thresholding method and convolutional neural network method.

Study of Low Cost Micro Autopilot for Fixed-Wing UAV

2011 ◽  
Vol 317-319 ◽  
pp. 1672-1676
Author(s):  
Wei Xiong ◽  
Zhao Ying Zhou ◽  
Xiao Yan Liu
Keyword(s):  
Control System ◽  
Flight Control ◽  
Low Cost ◽  
Cost Effective ◽  
System Structure ◽  
Gps Receiver ◽  
Flight Control System ◽  
Sensor Configuration ◽  
The Cost ◽  
And Control

From the cost-effective viewpoint of low cost Bank-to-Turn (BTT) Unmanned Air Vehicles (UAV) and target drone, a low cost flight control system, with the fewest number of sensors, is studied in this paper for the fixed-wing UAV. The structure of the control system is described which is able to estimate necessary information to provide stabilization and guidance for a small fixed wing BTT UAV. The practical flight control system structure and control law for roll hold loop, altitude hold loop, trajectory tracking loop are designed based on the sensor configuration with only a MEMS rate gyro, a MEMS pressure sensor and global positioning system (GPS) receiver only. A prototype low cost autopilot is trial-produced to control a typical UAV. The Experimental results show the effectiveness of navigation and control methods of f the proposed methodology.

Advance Protection for Three Phase Induction Motor using Microcontroller Atmega32

2018 ◽  
Vol 8 (1) ◽  
pp. 172
Author(s):  
Karan S Belsare ◽  
Gajanan D Patil
Keyword(s):  
Induction Motor ◽  
Low Cost ◽  
Short Circuit ◽  
Cost Factor ◽  
Protection Scheme ◽  
Three Phase ◽  
The Cost

A low cost and reliable protection scheme has been designed for a three phase induction motor against unbalance voltages, under voltage, over voltage, short circuit and overheating protection. Taking the cost factor into consideration the design has been proposed using microcontroller Atmega32, MOSFETs, relays, small CTs and PTs. However the sensitivity of the protection scheme has been not compromised. The design has been tested online in the laboratory for small motors and the same can be implemented for larger motors by replacing the i-v converters and relays of suitable ratings.

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