ENGINEERING RESEARCH PAPERS

LED-LIGHT EMITTING DIODE IEEE PAPER 2016




Metallic nanostructures for efficient LED lighting
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Light-emitting diodes (LEDs) are driving a shift toward energy-efficient illumination. Nonetheless, modifying the emission intensities, colors, and directionalities of LEDs in specific ways remains a challenge often tackled by incorporating secondary optical

SP2 Deployment at Boston College Aerodyne-Led Coated Black Carbon Study (BC4) Final Campaign Summary
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Summary The main objective of the Boston College-Aerodyne led laboratory study (BC4) was to measure the optical properties of black carbon (BC) particles from a diffusion flame directly and after being coated with secondary organic and inorganic material and to

A Family of Bridgeless Quasi-Resonant LED Drivers
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Abstract:A family of offline bridgeless quasi-resonant LED drivers is introduced. The prominent features of the proposed drivers are the capacitive isolation feature, inherent low linecurrent distortion, and high power factor. The concept is validated by a 30-W prototype

Radiotherapy and Sorafenib in the Management of Patients with Hepatocellular Carcinoma Have Led to Improved Survival: A Single Center Experience
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Abstract Background Aims: Hepatocellular Carcinoma (HCC) is the sixth most common malignancy and the third most common cause of cancer mortality worldwide. We aimed to assess the effect of novel treatment options on the survival of HCC patients. Methods: This

Combining nurse-led care with patient self-assessment could enhance tight control of rheumatoid arthritis and management of comorbidities
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Methods COMEDRA was an unblinded RCT comprising two active interventions carried out in a self-monitoring group and a nurse-led comorbidities group; each acting as control of the other. In the self-monitoring group, patients were taught to assess their own disease

POLICIES FOR WAGE--LED GROWTH IN EUROPE
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Abstract This paper summarizes the findings of two recent reports by Onaran and Obst (2015) and Stockhammer and Wildauer (2015), and derives the policy implications. Results of research by Onaran and Obst (2015) and Stockhammer and Wildauer (2015) show that

LI-FI Technology for Data Transmission through LED
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Abstract:The LI-FI is the newest technology in the Field of wireless communication. Nowadays many people are using internet to fulfill their task through wired or wireless. As the number of users is increases the rate of data transmission in the wireless network gets

A nationwide, resident-led teaching programme for medical students in Singapore: SingHealth Student Internship Programme Bootcamp.
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METHODS This was an initial feasibility study evaluating a half-day teaching boot camp initiated, developed and conducted by the resident educators. A three-month preparation period was required to set up an education subcommittee, liaise with medical student

Fabrication and Optimization of Acid Cyanide-Free Electroplating Silver Film as Reflective Layer for LED Package
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ABSTRACT In this paper, a low-cost acid cyanide-free silver plating bath has been developed and optimized to electroplate the silver (Ag) film with a high reflectivity and glossiness as the reflective layer for LED package. The effects of the bath composition, the

CeilingCast: Energy efficient and location-bound broadcast through led-camera communication
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Abstract:Although Visible Light Communication (VLC) is gaining increasing attentions in research, developing a practical VLC system to harness its immediate benefits using Commercial Off-The-Shelf (COTS) devices is still an open issue. To this end, we develop

A Study on the Thermal Performance of Automotive LED Head Lamps with Synthetic Jet
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Abstract LED head lamps have a longer lifespan and better luminous efficacy compared to halogen bulbs. Recently, heat dissipation has emerged as an important issue due to the high power and more compact sizes of LED head lamps. This study adopted a forced

Case Report A secret path: severe deep neck space infection led to axilla and lateral chest abscesses
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Abstract: Background: Deep neck space infections (DNSI) are significantly less common today than in the past. But acute severe neck abscesses are still associated with significant morbidity and mortality rates due to lack of seasonable diagnosis and treatment. Case

HEAT TRANSFER ANALYSIS FOR GREEN LED BASED INDOOR LIGHTING MODULE
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Abstract:As the efficiency of LED (Light Emitting Diode) chip has increased, the more effective thermal radiation is needed. The purpose of this research is to find a right material for green LED indoor lighting module with high CRI (Color Rendering Index) above 95.

Low Cost, High Power Factor, Dimmable, Monolithic AC-Direct LED Driver with on-Chip Step-Dimmer for Outdoor Lighting Applications
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Abstract:In this paper, we develop a monolithic AC LED driver IC which can drive and dim high voltage LED strings directly from the 220V/60Hz commercial AC power. The proposed AC LED driver delivers a best-in-class dimming performance via a simple concept with a

Personalization of Gait Rehabilitation Games on a Pressure Sensitive Interactive LED Floor
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Abstract. This paper describes the design and evaluation of a suite of movementbased games for gait rehabilitation with personalization based on gait characteristics. We used an eight by one meter pressure sensitive interactive LED floor. With the interactive games we

Nurse-led remote primary healthcare service
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Remote Australia, including areas classified as remote and very remote1, accounts for 86% of Australia's land mass but only 3% of the population2. Health care provided to this population is delivered through a number of models and configurations but predominantly

Smart Home Temperature System with fancy spinning LED display
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The input voltage of LM7812 (Voltage regulator with 12V output) is 9V from a Alkaline Battery. The voltage will drop 2V across the LED which is used to show that Battery works

The FDI-led development model revisited: The case of Hungary
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Abstract Countries of East-Central Europe underwent fundamental economic and political changes in their transition process. Their economies were restructured and modernized, became integrated part of the world's most competitive value chains. Although, benefits of

System Design On Dot Matrix Led Large Screen
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Abstract:In this paper, the design method of LED graphic display system is discussed. The design includes display circuit, display driver circuit and dynamic display circuit. The design

A STUDY OF THE SUITABILITY OF LED LIGHT SOURCES OVER CONVENTIONAL LIGHTSOURCES IN A MUSEUM ENVIRONMENT
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ABSTRACT The core of the museum is the exhibition. Effective exhibit lighting can be achieved by providing standard light levels as well as lowering the IR and UV components at the same time to minimise running energy costs. These requirements can be efficiently

Research and Implementation of RGB-LED Mixed Light Matching along with Music Playing
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Abstract Synesthesia effect between music and color is a researching direction which is concerned much. The problem of mismatching between music playing and color had always existed in applications. On the basis of researching music and color, colors which are

STUDY OF THE IMPACT OF RECEIVER APERTURE DIAMETER, LED ELECTRON CARRIER LIFE TIME AND RC TIME CONSTANT ON VISIBLE LIGHT
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ABSTRACT Optical wireless communication using white LEDs is the latest research field for next-generation communication. In this paper, we have studied the indoor visible light communication system with practically measured channel characteristics with the help of

BLUE LED LIGHT AS A NEW HYGIENIC PROBLEM
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The conditions for the formation of an excess dose of blue light produced by the LED lighting were examined. It is shown that light-biological safety assessment carried out in accordance with GOST R IEC 62471-2013 need to be clarified, taking into account changes in the

THE INFLUENCE OF THE SPECTRAL POWER DISTRIBUTION OF THE STREET LIGHTING LED LIGHTSOURCES ON BLUE LIGHT POLLUTION IN THE AREA
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Summary The paper presents analysis of spectral flux distribution by LED street lamps. Depends on applied technology, LEDs can generate white light in wide verity of correlated color temperature (CCT), and different content of blue light in their spectrum. As blue light

Effects of LED light spectra on active oxygen metabolism and expression of antioxidant isozymes in Houttuynia cordata Thunb. seedlings
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Abstract:The effects of various LEDs on active oxygen metabolism and patterns of SOD, POD and CAT isozymes in Houttuynia cordata Thunb. seedlings were investigated. After three weeks of light treatment, the MDA content was higher under blue LED compared

Detection of LED-based Traffic Light and Arrow using Optimal Camera Parameters and Hu Moments
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Abstract:Traffic light and arrow detection is an important problem for autonomous vehicles and advanced driver assistance systems. To accurately detect both the traffic light and arrow detection within saliency map-based region-of-interest. To assist the accurate detection,

Solar Powered Led Street Light With Intensity Control
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We know sources of energy are limited. To meet the increasing demand of energy, the energy conservation and use of renewable energy sources is necessary. The focus of this project is to make the most efficient use of the energy of sun for street light in city. The

Design of Panel Pattern Array in LED Flat Light for Improvement of Illuminance
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Abstract–A pattern array integrated on the front panel of a LED flat light was designed to improve the illuminance. Various pattern shapes were fabricated, including square pillar, hexagonal pillar, circular pillar, and hemispheres. Among them, the hemispherical pattern

A light emitting diode based simplified system for rapid grape ripeness monitoring
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Establishing ripeness at harvest is a crucial issue, since fruit quality is closely related to it. Non-destructive methods which could explore a large number of samples and give a rapid and comprehensive overview of ripening would be helpful. Grape ripeness monitoring in

Fabrication of ZnO hybrid structures and light emitting diode applications
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ABSTRACT Vertically-aligned ZnO nanorod arrays with a diameter of 40-150 nm were fabricated on Al2O3 substrates with and without GaN interlayers, and consequently covered with a ZnO film in-situ by a catalyst-free metal-organic chemical vapor deposition method.

Aluminum nitride coatings optimize thermal performance of light-emitting diode arrays
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For thermal performance, thermal management materials are most critical in the LED's die material, heat sink slug, and solder, because these are closest to the heat source and have the greatest impact on heat dissipation from the pn junction in the LED array. 4–7 Junction

Organic Light-Emitting Diode with Patterned Inverted Conical Structure for Efficiency Enhancement
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Abstract: The Organic Light Emitting Diode (OLED) has become very popular in the recent times because of its astounding features that includes light weight, better efficiency than conventional displays, fast response time and low fabrication cost. The biggest

Organic Light Emitting Diode Simulation Using Silvaco TCAD Tools
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(OLEDs) have become much popular in many spheres of microelectronics including optoelectronic applications, modulated light sources, internet connection etc. The research paper represents the results of two polymer layer organic light emitting diode (OLED) 1D

Blue-Light-Emitting Eu 2 Doped Lithium Calcium Silicate Phosphor for White-Light-Emitting-Diode
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Abstract: Eu2+ doped lithium calcium silicate Li2CaSiO4 phosphor was successfully prepared by traditional solid state reaction method at 800 oC. Morphology was studied by SEM demonstrated that the particle size was in the range of 2-10 µm, chemical

Organic Light-Emitting Diode Display Panel Integration Using Graphene Pixel Electrodes
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In recent years, significant advances of organic light-emitting diodes (OLEDs) have been made in the active-matrix OLED displays, and OLED has been one of the biggest market leaders in mobile. Furthermore, OLED is expanding its application to large-size display