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Journal of Engineering Research and Reports

Published by SCIENCEDOMAIN international · ISSN (electronic) 2582-2926

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1,996

Articles indexed

266

2026 articles

1,996

Open access

7,580

Citations (indexed)

Publications by year

Articles (1996)

Design of Solar Blind Photodetectors for Communication with Green Signal (λ= 0.532µm) in Space. Part II

Samson Mil’ shtein & Dhawal Asthana · Journal of Engineering Research and Reports · 2020

The areas of Free Space Optical (FSO) communication and high-speed Visible Light Communication (VLC) offer potential for very high-speed data transmission. Favorable attributes including high frequency and wider bandwidths that can enable transmission speeds of the order 100Gb/s,...

Open access Research Article 10.9734/jerr/2020/v19i217227

Wirebond Process Optimization through Stitch Relocation on QFN Package

A. Moreno, E. Graycochea Jr. & F. R. Gomez · Journal of Engineering Research and Reports · 2020

One of the most challenging assembly manufacturing process in semiconductor industry is wirebond process using a wire as direct material. With this new technology, some issues were encountered during the first trial of a quad flat no-leads (QFN) package. This paper is focused on...

Open access Research Article 10.9734/jerr/2020/v19i217228

Optimal Placement and Sizing of Capacitors in Radial Distribution Systems: A Two-Stage Method

Sunday Adeleke Salimon, Abiodun Aderemi Baruwa, Saheed Oluwasina Amuda & Hafiz Adesupo Adeleke · Journal of Engineering Research and Reports · 2020

Optimal allocation of shunt capacitors in the radial distribution networks results in both technical and economic benefits. This paper presents a two-stage method of Loss Sensitivity Factor (LSF) and Cuckoo Search Algorithm (CSA) to find the optimal size and location of shunt cap...

Open access Research Article 10.9734/jerr/2020/v19i217229

Elimination of Crumpled Leadframe Defect through Machine Sensor Enhancement

Jonathan C. Pulido, Edwin M. Graycochea Jr. & Frederick Ray I. Gomez · Journal of Engineering Research and Reports · 2020

The paper focused on the improvement done in quad-flat no-leads (QFN) leadframe package assembly to address the quantity of rejection of crumpled leadframe during handling at wirebond process station. Overload sensor at the output magazine handler was found out to be defective, h...

Open access Research Article 10.9734/jerr/2020/v19i217226

Influence of Elevated Temperature on Concrete Properties Containing Natural Wastes Treated by Pyrolysis

Manal M. Farag, Magdy El- Yamany, A. S. Faried & W. H. Sofi · Journal of Engineering Research and Reports · 2020

Concrete is probably the most extensively used construction material in the world. The modern concept of construction is directed at the use of recycled materials, in particular, various waste products. This solves a number of problems -saving the expensive materials; - decreasin...

Open access Research Article 10.9734/jerr/2020/v19i217225

Package Reliability Performance Study of QFN Device on Different Die Attach Machines

Edwin Graycochea Jr., Rennier Rodriguez, Frederick Ray Gomez & Bryan Christian Bacquian · Journal of Engineering Research and Reports · 2020

The paper is focused on the reliability performance of quad-flat no-leads (QFN) package evaluated on different die attach machine platforms. Reliability tests were done to check the difference in the quality and reliability performance of the device that undergone die attach proc...

Open access Research Article 10.9734/jerr/2020/v19i117224

Design of Fundamental Power Coupler of 5 Cell Elliptical SRF Cavity Using CST Microwave Studio

Rajdip Das & B. N. Biswas · Journal of Engineering Research and Reports · 2020

A 5 cell elliptical cavity prototype has been build to accelerate the 100 MeV high beam of protons [1]. For cavity = 0.61 β g at 650 MHz in which the cavity structure is optimized by using the code from SUPERFISH [2]. The Q value of the cavity measured is 0.61x109 for 4.2 K. In t...

Open access Research Article 10.9734/jerr/2020/v19i117221

Relationship between Worship Time and Attendance in Orthodox Church, Southern Nigeria

O. C. Ezeanyim, C. O. Nwankwo & A. O. Umeozokwere · Journal of Engineering Research and Reports · 2020

The perturbation in members worship attendance data with respect to service duration and a general impression among members, that worship attendance recorded at sessional services, was due to the worship duration, gave rise to this investigative research. There has never been a s...

Open access Research Article 10.9734/jerr/2020/v19i117220

Hydraulic Fracture Geometry Modeling Techniques for Extracting Unconventional Reservoirs

Mohamed Ali Khalil & Abdunaser Omar Susi · Journal of Engineering Research and Reports · 2020

This study aims to provide a comprehensive review of all hydraulic fracture geometry modeling techniques available in the conventional and unconventional reservoirs. We are introducing a comparison study between major available hydraulic fracture modeling techniques, advantages,...

Open access Research Article 10.9734/jerr/2020/v19i117219