Vandal Glass Heat Distribution and the Effect of Glass Gap Adjustments in Outdoor Digital Display Components

2019 ◽  
Author(s):  
Jeho Kim ◽  
J. Michael Brown ◽  
Yogendra Joshi ◽  
Kevin O’Connor ◽  
Marcos Diaz ◽  
...  
Keyword(s):  
Solar Irradiance ◽  
Liquid Crystal Display ◽  
Computation Time ◽  
Optimum Number ◽  
Electronic Products ◽  
Software Packages ◽  
Processing Power ◽  
Manufacturing Resources ◽  
To Come ◽  
Glass Heat

Abstract The use of computational fluid dynamics/heat transfer (CFD/HT) software has become common in exploring the thermal and hydrodynamic behavior of many electronic products. Well-designed CFD/HT models are very valuable for driving the product design, but accurate models can be difficult to develop in some cases for a practical use. Manufacturing Resources International (MRI) uses CFD/HT modeling to predict the display limitations of outdoor digital displays under various hazardous environmental conditions. Both the surrounding ambient temperature and solar irradiance are the major contributors to temperature rise inside outdoor digital displays, but most CFD/HT software packages are limited in simulating solar irradiance through semi-transparent materials and multiple surfaces. Therefore, the contribution from solar irradiance must be treated with care when creating a CFD/HT model especially when an optimum number of mesh elements is to be used to minimize the necessary processing power and solution computation time. In the current study, we employ true solar testing to determine how much solar irradiance passes through the vandal glass assembly. In lieu of defining the solar irradiance as a heat flux, a methodology to determine the power that should be imposed on the sun-exposed vandal glass is described. As outdoor digital displays face harsher thermal challenges compared to the displays that are deployed indoors, it is necessary to come up with a display design that can best benefit from the cooling effect. There are numerous parameters that can be adjusted to optimize the display in terms of its thermal performance but in particular, this paper explores the effect of adjusting the gap distance between the vandal glass and the liquid crystal display (LCD) to see how the maximum LCD temperature and fan performance are influenced.

Vandal Glass Heat Distribution and the Effect of Glass Gap Adjustments in Outdoor Digital Display Components

2020 ◽  
Vol 142 (3) ◽  
Author(s):  
Jeho Kim ◽  
J. Michael Brown ◽  
Yogendra Joshi ◽  
Kevin O'Connor ◽  
Marcos Diaz ◽  
...  
Keyword(s):  
Solar Irradiance ◽  
Liquid Crystal Display ◽  
Digital Display ◽  
Hydrodynamic Behavior ◽  
Display Design ◽  
Electronic Products ◽  
Fan Performance ◽  
Software Packages ◽  
To Come ◽  
Glass Heat

Abstract The use of computational fluid dynamics/heat transfer (CFD/HT) software has become common in exploring the thermal and hydrodynamic behavior of many electronic products. Well-designed CFD/HT models are very valuable for driving the product design, but accurate models can be difficult to develop in some cases for a practical use. In CFD/HT modeling of outdoor digital displays, both the surrounding ambient temperature and solar irradiance are the major contributors to temperature rise, but most software packages are limited in simulating solar irradiance through semitransparent materials and multiple surfaces. In this study, a methodology to replace the solar irradiance with a power that should be imposed on the sun-exposed exterior glass (vandal glass) is described. As outdoor digital displays face harsher thermal challenges compared to the displays that are deployed indoors, it is necessary to come up with a display design that can best benefit from the cooling effect. There are numerous parameters that can be adjusted to optimize the display in terms of its thermal performance but in particular, this study explores the effect of adjusting the gap distance between the vandal glass and the liquid crystal display (LCD) to see how the maximum LCD temperature and fan performance are influenced.

Design and Implementation of LCD Based on FPGA

2015 ◽  
Vol 738-739 ◽  
pp. 184-187
Author(s):  
Qing Fang Zhou ◽  
Jun Yang
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Display ◽  
Experimental System ◽  
Operating Voltage ◽  
Description Language ◽  
Electronic Products ◽  
Full Color ◽  
Programmable Logic Devices ◽  
Hardware Description ◽  
Display Performance

Liquid crystal display (LCD) is one of the most dynamic electronic products in this century. It has been recognized as a key component of media era, since it has many characteristics, such as a low operating voltage, light volume, and excellent performance of full color display, and suitable for LSI drive and the like. In order to break the limitations of LCD, improve its animation display performance as multimedia television monitor, and strongly simplify the manufacturing to ensure the competitiveness on price, we designed a LCD module with the liquid crystal cell of TD-EDA experimental system based on FPGA, and achieved the control of LCD with hardware description language VHDL in this paper. The validation results of compiled program downloaded on programmable logic devices after compiling and simulating show that the LCD we designed can run correctly and relatively perfectly.

Multilayered Distribution System in India

2012 ◽  
pp. 116-145
Author(s):  
Sumeet Gupta ◽  
Tushar Agrawal ◽  
Priyanka Jain ◽  
Dolly Jaisinghani ◽  
Ritika Rathi
Keyword(s):  
Supply Chains ◽  
Case Studies ◽  
Distribution System ◽  
Distribution Systems ◽  
Pharmaceutical Products ◽  
Efficient Solutions ◽  
Electronic Products ◽  
Multilayered System ◽  
Perishable Goods ◽  
To Come

This chapter presents several case studies of the multilayered system in India and shows how the prevalent distribution system preclude any means of cost reduction and making these supply chains efficient. Supply chains of perishable goods, electronic products, FMCG products and Pharmaceutical products are discussed in this chapter. Each of these supply chains present unique challenges and issues that need attention. The three main objectives in these studies are to understand the distribution systems as well as cost economics of the supply chains, identify potential conflicts and issues in their distribution system, and to study the effect of macro-environment on the distribution system. Apart from these objectives, these cases are also meant to prepare those venturing into such supply chains to come up with efficient solutions for improving these supply chains.

scholarly journals Deciphering tissue morphodynamics using bioimage informatics

2017 ◽  
Vol 372 (1720) ◽  
pp. 20150512 ◽  
Author(s):  
Alexandre C. Dufour ◽  
Anneliene H. Jonker ◽  
Jean-Christophe Olivo-Marin
Keyword(s):  
Developmental Biology ◽  
Image Analysis ◽  
Fluorescence Microscopy ◽  
Automated Analysis ◽  
Tissue Level ◽  
Bioimage Informatics ◽  
Software Packages ◽  
Introductory Overview ◽  
To Come ◽  
Microscopy Techniques

In recent years developmental biology has greatly benefited from the latest advances in fluorescence microscopy techniques. Consequently, quantitative and automated analysis of this data is becoming a vital first step in the quest for novel insights into the various aspects of development. Here we present an introductory overview of the various image analysis methods proposed for developmental biology images, with particular attention to openly available software packages. These tools, as well as others to come, are rapidly paving the way towards standardized and reproducible bioimaging studies at the whole-tissue level. Reflecting on these achievements, we discuss the remaining challenges and the future endeavours lying ahead in the post–image analysis era. This article is part of the themed issue ‘Systems morphodynamics: understanding the development of tissue hardware’.

scholarly journals Implementation and Analysis of Enhanced Obfuscation Technique for Data Security

2019 ◽  
Vol 8 (3) ◽  
pp. 6107-6115
Keyword(s):  
Information Security ◽  
Data Storage ◽  
Computation Time ◽  
Point Of View ◽  
Malicious Attacks ◽  
Security Systems ◽  
Avalanche Effect ◽  
Processing Power ◽  
Fast Development ◽  
Obfuscation Technique

With the fast development of digital exchange of data in an electronic way, data and information security are becoming more important in both transmission and data storage. Cryptography is used as a solution which plays an important role in data and information security systems against malicious attacks. The encryption technique is used to provide confidentiality to the data during transmission because security threats are more on data during transmission than data at rest. One can also use encryption to secure user’s data at data storage (i.e., data at rest). But an encryption algorithm consumes a more amount of computing resources such as processing power, memory and computation time. Obfuscation technique is a very lightweight technique that comes into a picture to protect the data at storage from malicious attacks. There are many obfuscation techniques are available to ensure the confidentiality of the data. In this paper, an obfuscation technique has been proposed and implemented which uses a 128-bit key to improve the security of the data. The experimental results show that the time taken for obfuscation and de-obfuscation is less and also from the security point of view it provides high avalanche effect

Escaping Tree-Support (ET-Sup): minimizing contact points for tree-like support structures in additive manufacturing

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Tsz-Ho Kwok
Keyword(s):  
Additive Manufacturing ◽  
Lead Time ◽  
Computation Time ◽  
Support Structures ◽  
Content Type ◽  
Contact Points ◽  
Clear Point ◽  
New Type ◽  
To Come ◽  
First Time

Purpose Support structures are often needed in additive manufacturing (AM) to print overhangs. However, they are the extra materials that must be removed afterwards. When the supports have many contacts to the model or are even enclosed inside some concavities, removing them is very challenging and has a risk of damaging the part. Therefore, the purpose of this paper is to develop a new type of tree-support, named Escaping Tree-Support (ET-Sup), which tries to build all the supports onto the build plate to minimize the number of contact points. Design/methodology/approach The methodology is to first classify the support points into three categories: clear, obstructed and enclosed. A clear point has nothing between it and the build plate; an obstructed point is not clear, but there exists a path for it to reach the build plate; and an enclosed point has no way to reach the build plate. With this classification, the path for the obstructed points to come clear can be found through linking them to the clear points. All the operations are performed efficiently with the help of a ray representation. Findings The method is tested on different overhang features, including a lattice ball and a mushroom shape with a concave cap. All the supports generated for the examples can find their way to the build plate, which looks like they are escaping from the model. The computation time is around one second for these cases. Originality/value This is the first time truly realizing this “escaping” property in the generation of tree-like support structures. With this ET-Sup, it is expected that the AM industries can reduce the manufacturing lead time and save much labor work in post-processing.

Assessing ERP Risks and Rewards

2011 ◽  
pp. 256-261
Author(s):  
Joseph Bradley
Keyword(s):  
Enterprise Resource Planning ◽  
Information Needs ◽  
Resource Planning ◽  
Erp Systems ◽  
Material Requirements Planning ◽  
Mrp Ii ◽  
Business Press ◽  
Software Packages ◽  
Manufacturing Resources ◽  
Resources Planning

Enterprise resource planning (ERP) systems claim to meet the information needs of organizations. These off-the-shelf software packages replace hard to maintain solutions created by IS departments or older off-the-shelf packages that often provided only piecemeal solutions to an organization’s information needs. ERP systems evolved from material requirements planning (MRP) systems and manufacturing resources planning (MRP II) systems. ERP serves the entire enterprise, not just manufacturing and inventory control as with its predecessors. ERP integrates information for the entire organization in a single database. But ERP implementations are often complex and experience serious problems. Failures, abandoned projects, and general dissatisfaction have been well publicized in the business press. ERP systems are “expensive and difficult to implement, often imposing their own logic on a company’s strategy and existing culture” (Pozzebon, 2000, p. 1015).

scholarly journals Pengembangan Prototype Sistem E-Commerce pada Ajun Elektronik dengan Metode FAST

2020 ◽  
Vol 9 (2) ◽  
pp. 281
Author(s):  
Sarwindah Sarwindah ◽  
Elly Yanuarti
Keyword(s):  
System Development ◽  
Problem Analysis ◽  
Fast Method ◽  
Design Decision ◽  
Network Technology ◽  
Electronic Products ◽  
Transaction Process ◽  
Flexible Framework ◽  
Logical Design ◽  
To Come

While the development of information technology is very influential for the progress of a business, promoting a business that is owned, then one of them by using an ecommerce website. E-commerce is a trading activity carried out online through a website. Problems in electronic adjunct stores Stores still use a conventional system where if a buyer wants to buy the desired item, the buyer must come directly to the store and this condition makes marketing and sales hampered by distance and time. In addition, the promotion at Arjun Electronics Store has not been fully implemented properly because it is only done by directly informing buyers who come to the shop. the purpose of this research is to produce a system that can provide ease of introducing products in the electronic adjuncts and sell all electronic products for household needs. With e-commerce site that is able to provide information about goods to customers quickly through internet network technology. Where asthe FAST method is a fairly flexible framework for various types of projects and strategies. System development with the FAST method is carried out sequentially which includes the stages of scope definition, problem analysis, needs analysis, logical design, decision analysis, physical design and integration, construction and testing, insralation and delivery, The results of this study in the form of website-based e-commerce optimization. With this website, stores can expand marketing, consumers become easier to get information about goods without having to come to the Electronic Adjunct Store and with the (e-commerce), the store can facilitate the conventional transaction process that has been conventional to be modern and can certainly make it easier to create sales reports that were previously still manual.

scholarly journals Decoupling the effects of clear atmosphere and clouds to simplify calculations of the broadband solar irradiance at ground level

2014 ◽  
Vol 7 (4) ◽  
pp. 1661-1669 ◽  
Author(s):  
A. Oumbe ◽  
Z. Qu ◽  
P. Blanc ◽  
M. Lefèvre ◽  
L. Wald ◽  
...  
Keyword(s):  
Solar Irradiance ◽  
Computation Time ◽  
Ground Level ◽  
Radiative Transfer Model ◽  
Transfer Model ◽  
Infinite Plane ◽  
Cloud Optical Depth ◽  
Cloud Properties ◽  
Modification Factor ◽  
Clear Atmosphere

Abstract. In the case of infinite plane-parallel single- and double-layered cloud, the solar irradiance at ground level computed by a radiative transfer model can be approximated by the product of the irradiance under clear atmosphere and a modification factor due to cloud properties and ground albedo only. Changes in clear-atmosphere properties have negligible effect on the latter so that both terms can be calculated independently. The error made in using this approximation depends mostly on the solar zenith angle, the ground albedo and the cloud optical depth. In most cases, the maximum errors (95th percentile) on global and direct surface irradiances are less than 15 W m−2 and less than 2–5% in relative value. These values are similar to those recommended by the World Meteorological Organization for high-quality measurements of the solar irradiance. Practically, the results mean that a model for fast calculation of surface solar irradiance may be separated into two distinct and independent models, possibly abacus-based, whose input parameters and resolutions can be different, and whose creation requires less computation time and resources than a single model.

Data Mining Defined

2001 ◽  
pp. 23-42 ◽  
Author(s):  
Stephan Kudyba ◽  
Richard Hoptroff
Keyword(s):  
Data Mining ◽  
Analytical Techniques ◽  
Monte Carlo Analysis ◽  
Current Data ◽  
Mining Technology ◽  
Processing Power ◽  
Mathematical Techniques ◽  
To Come ◽  
Main Component ◽  
Bayesian Methodologies

Over the years, the term data mining has been connected to various types of analytical approaches. In fact, just a few years ago, let’s say prior to 1995, many individuals in the software industry and business users as well, often referred to OLAP as a main component of data mining technology. More recently however, this term has taken on a new meaning and one which will most likely prevail for years to come. As we mentioned in the previous chapter, data mining technology encompasses such methodologies as clustering, classification and segmentation, association, neural networks and regression as the main players in this space. Other analytical processes which are related to mining, as defined in this work, include such methodologies as Linear Programming, Monte Carlo analysis and Bayesian methodologies. In fact, depending on who you ask, these techniques may actually be considered part of the data mining spectrum since they are grounded in mathematical techniques applied to historical data. The focus of this work however, revolves around the former more core approaches. Regardless of the type of methodology, data mining has taken its roots from traditional analytical techniques. Enhancements in computer processing, (e.g., speed and processing power) has enabled a wider diffusion of more complex techniques to become more automated and user friendly and have evolved to the state of our current data mining.

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