Results 1 to 10 of about 149,234 (263)

Research on length deformation control of high-altitude linear engineering based on the ellipsoid expansion method [PDF]

Scientific Reports
In engineering control surveys, the problem of length distortion arising from the reduction of field-measured distances to the Gauss plane has long posed challenges in practical applications, particularly in high-altitude linear engineering projects ...
Weixing Yang, Jingjing He, Xinchao Ding, Fangping Li, Li Qian, Lei Gan, Kuangmin Wei   +6 more
doaj   +2 more sources

Exploring quality inspection and grade judgment of distortion defects in the fabrication of spectacle lenses [PDF]

Decision Science Letters, 2022
This study explores the quality control system featuring visual inspection and grade judgment for detecting distortion defects in spectacle lens fabrication.
Hong-Dar Lin, Tung-Hsin Lee, Chou-Hsien Lin, Yuan-Shyi Peter Chiu   +3 more
doaj   +1 more source

Geometric distortion assessment in 3T MR images used for treatment planning in cranial Stereotactic Radiosurgery and Radiotherapy.

PLoS ONE, 2022
Magnetic Resonance images (MRIs) are employed in brain Stereotactic Radiosurgery and Radiotherapy (SRS/SRT) for target and/or critical organ localization and delineation.
Stefanos Theocharis, Eleftherios P Pappas, Ioannis Seimenis, Panagiotis Kouris, Dimitrios Dellios, Georgios Kollias, Pantelis Karaiskos   +6 more
doaj   +3 more sources

Three-Phase Four-Wire Inverter for Grid Emulator Under Wide Inductance Variation to Evaluate the Performance of Distributed Generator

IEEE Open Journal of Industry Applications, 2023
This article presents a three-phase four-wire inverter to generate voltage sources under wide filter inductance variation. The voltage sources with distortion and unbalance are to emulate grid voltages.
Tsai-Fu Wu, Yun-Hsiang Chang, Chien-Chih Hung, Jui-Yang Chiu   +3 more
doaj   +1 more source

Network control: A rate-distortion perspective [PDF]

2011 IEEE International Symposium on Information Theory Proceedings, 2011
Today's networks are controlled assuming pre-compressed and packetized data. For video, this assumption of data packets abstracts out one of the key aspects - the lossy compression problem. Therefore, first, this paper develops a framework for network control that incorporates both source-rate and source-distortion.
Jubin Jose, Sriram Vishwanath
openaire   +2 more sources

Distortion Control for Delay-Sensitive Sources [PDF]

IEEE Transactions on Information Theory, 2008
This work was supported in part by a subaward from the U.S. Army, prime award W911NF-05-1-0246. Prepared through collaborative participation in the Communications/nand Networks Consortium sponsored by the U.S. Army Research Laboratory under The Collaborative Technology Alliance Program, Cooperative Agreement DAAD19-01-2-0011.
Azadeh Faridi, Anthony Ephremides
openaire   +2 more sources

JPEG2000 encoding with perceptual distortion control [PDF]

IEEE Transactions on Image Processing, 2004
In this paper, a new encoding approach is proposed to control the JPEG2000 encoding in order to reach a desired perceptual quality. The new method is based on a vision model that incorporates various masking effects of human visual perception and a perceptual distortion metric that takes spatial and spectral summation of individual quantization errors ...
Zhen Liu, Lina J. Karam, Andrew B. Watson   +2 more
openaire   +3 more sources

Mitigation of Current Distortion for GaN-Based CRM Totem-Pole PFC Rectifier With ZVS Control

IEEE Open Journal of Power Electronics, 2021
The GaN-based critical conduction mode (CRM) totem-pole power factor correction (PFC) converter with full-line-cycle zero voltage switching (ZVS) is a promising candidate for high-efficiency front-end rectifiers.
Jingjing Sun, Handong Gui, Jie Li, Xingxuan Huang, Nathan Strain, Daniel J. Costinett, Leon M. Tolbert   +6 more
doaj   +1 more source

Controlled-distortion constrained global parametrization [PDF]

ACM Transactions on Graphics, 2013
The quality of a global parametrization is determined by a number of factors, including amount of distortion, number of singularities (cones), and alignment with features and boundaries. Placement of cones plays a decisive role in determining the overall distortion of the parametrization; at the same time, feature and boundary alignment also affect the
Ashish Myles, Denis Zorin
openaire   +2 more sources

Accounting and control procedures in risk assessment of information environment distortion [PDF]

SHS Web of Conferences, 2021
Accounting and control is the foundation of prosperous business. It is impossible to create an effective internal control system without taking into account the organizational and methodological aspects of the accounting process. Therefore, there appears
Alekseeva Viktoriya V., Milgunova Irina V.   +1 more
doaj   +1 more source