Results 61 to 70 of about 756,251 (144)

Towards recovery of complex shapes in meshes using digital images for reverse engineering applications [PDF]

, 2010
When an object owns complex shapes, or when its outer surfaces are simply inaccessible, some of its parts may not be captured during its reverse engineering. These deficiencies in the point cloud result in a set of holes in the reconstructed mesh.
PERNOT, Jean-Philippe, VERON, Philippe, PANCHETTI, Minica   +2 more
core   +1 more source

A Novel Suppression Strategy for the Reverse Regulation Phenomenon of Variable Speed Pumped Storage Unit With Full-Size Converter

International Transactions on Electrical Energy Systems
Wind power, photovoltaic, and other new clean energy generations exhibit large power fluctuations and strong intermittency, whose rapid integration leads to grid frequency instability and even major blackouts.
Pengyu Pan, Gang Chen, Yufei Teng, Huabo Shi, Lijie Ding   +4 more
doaj   +1 more source

A direct A.C. to A.C. regenerative frequency and voltage converter [PDF]

, 1980
Includes bibliographical references.The reliable variable speed operation of an a. c. machine over a wide speed range is a problem that has received attention for some time.
Case, Michael James
core   +1 more source

Reverse logistics - a framework [PDF]

In this paper we define and compare Reverse Logistics definitions. We start by giving an understanding framework of Reverse Logistics: the why-what-how.
Dekker, R., Brito, M.P. de
core  

A series-parallel load-resonant converter for a controlled-current arc-welding power supply [PDF]

A power supply incorporating a series-parallel load-resonant converter, capable of very efficient operation over a wide range of output power is presented. The series-parallel load-resonant converter is shown to have three pairs of resonant frequencies.
Pollock, Helen Geraldine Phyllis
core  

A tunable WDM wavelength converter based on cross phase modulation effects in normal dispersion holey fiber

, 2003
We demonstrate a tunable wavelength-division-multiplexing wavelength converter based on cross-phase modulation in just 5.8m of highly nonlinear normal dispersion holey fiber (HF) and incorporating a precise compression-tuned apodized fiber-grating filter.
Lee, J., Richardson, D., Ibsen, M., Richardson, D.J., Monro, T., Yusoff, Z., Monro, T.M., Lee, J.H., Belardi, W.   +8 more
core   +1 more source

Continuous-conduction-mode SEPIC converter with low reverse-recovery loss for power factor correction

, 2019
A continuous-conduction-mode SEPIC converter with low reverse-recovery loss is proposed for power factor correction. The proposed SEPIC converter can reduce the reverse-recovery loss of the diodes and improve the power efficiency.
Kim, EH, Lee, JJ, Kwon, JM, Choi, WY, Kwon, BH   +4 more
core   +1 more source

REVERSE LOGISTICS IN GLOBALIZATION ASPECTS [PDF]

This paper presents issues connected with adaptation of modern solutions of reverse logisticsmanagement in enterprise to the concept of sustainable development promoted by the European Union.Nowadays more and more businesses are looking to grow their ...
Iwona Grabara, Janusz Grabara
core  

Design of Reverse Converter Using Parallel Prefix Adders and CRT

, 2015
The efficient design of Residue Number System (RNS) reverse converter based on Parallel Prefix Adder and Chinese Remainder Theorem is analyzed. In nowadays system, to achieve high speed reverse converter by the use of parallel prefix adder.
Devi, J. B. (J), Rohinipriya, G. (G)
core  

Buck-boost converter Fed nine level cascaded H-bridge inverter [PDF]

This research investigates on simulation of a traditional cascaded H-bridge (CHB) five-level inverter and proposes a nine-level cascaded H-bridge inverter system. The performance of both five-level and nine-level inverter systems is evaluated by modeling
Babu, R. Samuel Rajesh, Devendiren, Shobana, Ramamurthi, Subbulakshmy   +2 more
core   +1 more source