scholarly journals Led simulation lamps with optimal temperature led operation mode

2021 ◽  
Vol 7 (Special) ◽  
pp. 6-6
Author(s):  
Tatiana Shirobokova ◽  
◽  
Dmitry Surinsky ◽  
Sergey Egorov
Keyword(s):  
Thermal Analysis ◽  
Operation Mode ◽  
Operating Mode ◽  
Simulation Software ◽  
Mode Analysis ◽  
Thermal Mode ◽  
Optimal Temperature ◽  
Optimal Operating ◽  
Mode Of Operation

This article deals with the design of LED lamps with an optimal thermal mode of operation of the LEDs used. Thermal analysis of the model was performed using SolidWorks Simulation software. Keywords: LED LAMP, LED, OPTIMAL OPERATING MODE, ANALYSIS

scholarly journals Modeling of led luminaires with optimal temperature operation of leds

2021 ◽  
Vol 2131 (5) ◽  
pp. 052093
Author(s):  
T A Shirobokova ◽  
D O Surinsky ◽  
S V Egorov
Keyword(s):  
Thermal Analysis ◽  
Light Emitting Diode ◽  
Operating Mode ◽  
Simulation Software ◽  
Optimal Temperature ◽  
Light Emitting ◽  
Thermal Operating

Abstract In this article the design of light-emitting diode lamps with optimum thermal operating mode of the LEDs used are considered. Thermal analysis of the model is performed using SolidWorks Simulation software.

scholarly journals Choosing the optimal operating mode of a gas condensate well taking into account the relaxation deformation of rocks

2021 ◽  
Vol 134 (3) ◽  
pp. 50-54
Author(s):  
Т. А. Samadov ◽  
◽  
B. Z. , Кazymov ◽  
S. H. Novruzova ◽  
◽  
...  
Keyword(s):  
Operation Mode ◽  
Operating Mode ◽  
Optimal Operation ◽  
Gas Condensate ◽  
Reservoir Pressure ◽  
Optimal Operating ◽  
Reservoir Rocks ◽  
Bottom Hole ◽  
Sand Accumulation ◽  
Current Operating

The article proposes a method for selecting the optimal operation mode of a gas condensate well without sand accumulation in the bottom, taking into account the relaxation deformation of reservoir rocks during the development of a gas condensate deposit in the depletion mode. This method simultaneously allows you to determine the required current operating volume of produced condensate (as well as gas), as well as bottom-hole and contour values of reservoir pressure, condensate saturation and porosity of the reservoir, corresponding to the selected optimal operation mode of the well.

Enhancement of Contrast in the CEM and STEM Using Bumpy Specimens and Employing the “Dappled Field” Mode of Operation

1974 ◽  
Vol 32 ◽  
pp. 552-553 ◽  
Author(s):  
L. Gandolfi ◽  
J. Reiffel
Keyword(s):  
Operating Mode ◽  
Scanning Transmission Electron Microscope ◽  
Dark Field ◽  
Specimen Preparation ◽  
Field Mode ◽  
Preparation Methods ◽  
Scanning Transmission Electron ◽  
Transmission Electron ◽  
Mode Of Operation ◽  
Scanning Transmission

Calculations have been performed on the contrast obtainable, using the Scanning Transmission Electron Microscope, in the observation of thick specimens. Recent research indicates a revival of an earlier interest in the observation of thin specimens with the view of comparing the attainable contrast using both types of specimens.Potential for biological applications of scanning transmission electron microscopy has led to a proliferation of the literature concerning specimen preparation methods and the controversy over “to stain or not to stain” in combination with the use of the dark field operating mode and the same choice of technique using bright field mode of operation has not yet been resolved.

Research and Modelling on Electrical and Thermal Mode of LEDs Operation in the Luminaire

2018 ◽  
pp. 155-162 ◽  
Author(s):  
Sergei S. Kapitonov ◽  
Anastasia V. Kapitonova ◽  
Sergei Yu. Grigorovich ◽  
Sergei A. Medvedev ◽  
Taher Sobhy
Keyword(s):  
Thermal Conditions ◽  
Operating Mode ◽  
Thermal Processes ◽  
Thermal Mode ◽  
Crystal Temperature ◽  
Premature Failure ◽  
Model Based

In the article, the electrical and thermal processes in the LED lamp with varied parameters are investigated. Voltage and current measurements on all LEDs of the luminaire are carried out in the nominal operating mode. The power allocated to each LED is determined. The calculation of the LED crystal temperature was carried out using the developed thermal LED model based on the results of the measurements and by using “Multisim” program. It has been established that the temperature of the crystals of individual LEDs in the luminaire differ significantly, which leads to unfavourable thermal conditions for them and an increased likelihood of premature failure.

Kombinasi Mode Cipher Block Chaining Dengan Algoritma Triangle Chain Cipher Pada Penyandian Login Website

2018 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Dafirius Lombu ◽  
Siska Dame Tarihoran ◽  
Irwan Gulo
Keyword(s):  
Operation Mode ◽  
Feedback Mechanism ◽  
Database Access ◽  
Original Meaning ◽  
Mode Of Operation ◽  
Encryption And Decryption ◽  
Cryptographic Algorithms ◽  
Block Chaining

Generally, the database access of a website lies in the user login. When the login data is not accompanied by security techniques, it is very easily accessible by other parties. One effort that can be done to solve the problem is to encode the login data of website users based on cryptographic technique algorithm. Triangle Chain Cipher (TCC) is one of the classic cryptographic algorithms that encode data doubly and generate keys randomly along the plain. The process of encryption and decryption are interdependent to be one of the advantages of this algorithm. This algorithm will be more effective when combined with the Cipher Block Chaining (CBC) operation mode that is widely used in modern cryptographic algorithms today. The feedback mechanism between the blocks in this mode of operation is the operating advantage. This study describes how to combine the mode of operation of block chaining cipher with triangle chain cipher algorithm so that cipher data login website generated more random and difficult to find its original meaning.

scholarly journals Bandwidth Optimization of a Textile PIFA with DGS Using Characteristic Mode Analysis

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2516
Author(s):  
Bashar Bahaa Qas Elias ◽  
Ping Jack Soh ◽  
Azremi Abdullah Al-Hadi ◽  
Prayoot Akkaraekthalin ◽  
Guy A. E. Vandenbosch
Keyword(s):  
Wireless Body Area Network ◽  
Simulation Software ◽  
The Body ◽  
Mode Analysis ◽  
Area Network ◽  
Defected Ground Structure ◽  
Characteristic Mode ◽  
Antenna Structure ◽  
Rectangular Patch ◽  
Conventional Optimization

This work presents the design and optimization of an antenna with defected ground structure (DGS) using characteristic mode analysis (CMA) to enhance bandwidth. This DGS is integrated with a rectangular patch with circular meandered rings (RPCMR) in a wearable format fully using textiles for wireless body area network (WBAN) application. For this integration process, both CMA and the method of moments (MoM) were applied using the same electromagnetic simulation software. This work characterizes and estimates the final shape and dimensions of the DGS using the CMA method, aimed at enhancing antenna bandwidth. The optimization of the dimensions and shape of the DGS is simplified, as the influence of the substrates and excitation is first excluded. This optimizes the required time and resources in the design process, in contrast to the conventional optimization approaches made using full wave “trial and error” simulations on a complete antenna structure. To validate the performance of the antenna on the body, the specific absorption rate is studied. Simulated and measured results indicate that the proposed antenna meets the requirements of wideband on-body operation.

Understanding and Optimizing Vessel Propulsive Power and Fuel Use: Using Duty Cycle Analysis Computations

2014 ◽  
Author(s):  
Donald MacPherson ◽  
Elizabeth Boyd
Keyword(s):  
Systems Engineering ◽  
Duty Cycle ◽  
Operating Mode ◽  
Mode Analysis ◽  
Maritime Industry ◽  
Financial Return ◽  
Operating Modes ◽  
Strategic Plans ◽  
Reduce Emissions ◽  
The Individual

The maritime industry is in a mindset to save fuel and reduce emissions. How one achieves this end, however, can be a matter of some debate. While substantial industry effort is being placed on things that can be optimized, to achieve real benefit and financial return one must first understand the details about how the vessel consumes propulsive energy during its mission. This paper discusses a rational, simple, and effective systems engineering approach to identify power and fuel demands via computational propulsion analysis of the individual operating modes of a vessel’s duty cycle. It explains sensible consumption metrics that can be used to evaluate and compare different physical systems, strategic plans, or helm decisions. A duty cycle operating mode analysis calculation for a tugboat in multi-role service (as a harbor tug and in long haul ocean barge towing) is demonstrated using COTS software, including examples of design-side and shipboard decision options and consequences.

Analysis of Low Frequency Oscillation in Interconnected Power System under Hedge Operation Mode

2014 ◽  
Vol 536-537 ◽  
pp. 1542-1546
Author(s):  
Xun Gao ◽  
Jie Meng ◽  
Yi Qun Li ◽  
Ying Wang ◽  
Wen Chao Zhang
Keyword(s):  
Power System ◽  
Power Flow ◽  
Power Grid ◽  
Damping Ratio ◽  
Operation Mode ◽  
Oscillation Mode ◽  
Low Frequency ◽  
Operating Mode ◽  
Low Frequency Oscillation ◽  
Interconnected Power System

A phenomenon that the damping ratio will decrease when the power flows from both sides to the primary power grid is summarized and analyzed in the paper. Based on analysis of the damping ratio change of West Inner Mongolia-Shandong oscillation under the sequential operation mode and the hedge operation mode, a three-machine equivalent system is established to study edge to edge (ETE) oscillation mode under hedge operating mode of the power system. The influence of magnitudes and trends of power flow on damping ratio is analyzed, and the reason that why damping ratios decreases when both sides send power to the mid-side power grid is explained.

scholarly journals Mathematic simulation of the power interchange in the interbucket space of coaxially located impellers of the centrifugal turbo machine

2018 ◽  
Vol 224 ◽  
pp. 04016 ◽  
Author(s):  
Sergey Podbolotov ◽  
Anatoly Kolga ◽  
Natalja Dyorina
Keyword(s):  
Operation Mode ◽  
Geometric Parameters ◽  
Circumferential Velocity ◽  
Relative Direction ◽  
Input And Output ◽  
Counter Rotation ◽  
Mode Of Operation ◽  
Developed Pressure ◽  
Operation Frequency

The article presents the results of mathematic simulation to determine the effect of geometric parameters, coaxially installed impellers, a centrifugal turbo machine on the developed pressure, depending on the mode of operation (frequency and relative direction of the impellers rotation). It is established that irrespective of the operation mode, the influence of the circumferential velocity, the ratio of the input and output diameters and the width of the impeller on the value of the pressure developed by the turbo machine is invariable. While the influence of the density of the blades system decreases with the counter rotation of the impellers.

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