scholarly journals Mechanism of Competition between Barley and Weeds in Winter Cropping on Drained Paddy Fields, and a Diagnosis Method of the Weed Damage

1960 ◽  
Vol 29 (1) ◽  
pp. 133-136
Author(s):  
Masao ARAI ◽  
Takayoshi KATAOKA
Keyword(s):  
Paddy Fields ◽  
Diagnosis Method

Helicopter main reduction planetary gear fault diagnosis method based on SVDD

2020 ◽  
Vol 64 (1-4) ◽  
pp. 137-145
Author(s):  
Yubin Xia ◽  
Dakai Liang ◽  
Guo Zheng ◽  
Jingling Wang ◽  
Jie Zeng
Keyword(s):  
Fault Diagnosis ◽  
Planetary Gear ◽  
Gaussian Kernel ◽  
Support Vector ◽  
Support Vector Data Description ◽  
Vector Data ◽  
Energy Characteristics ◽  
Gear Fault ◽  
Channel Information ◽  
Diagnosis Method

Aiming at the irregularity of the fault characteristics of the helicopter main reducer planetary gear, a fault diagnosis method based on support vector data description (SVDD) is proposed. The working condition of the helicopter is complex and changeable, and the fault characteristics of the planetary gear also show irregularity with the change of working conditions. It is impossible to diagnose the fault by the regularity of a single fault feature; so a method of SVDD based on Gaussian kernel function is used. By connecting the energy characteristics and fault characteristics of the helicopter main reducer running state signal and performing vector quantization, the planetary gear of the helicopter main reducer is characterized, and simultaneously couple the multi-channel information, which can accurately characterize the operational state of the planetary gear’s state.

Diagnosis Method of Aging Degradation for Insulating Paper using Small Amount of Cellulose Fibers

2019 ◽  
Vol 139 (2) ◽  
pp. 130-135
Author(s):  
Masanobu Yoshida ◽  
Yoshinori Konishi ◽  
Masamichi Kato
Keyword(s):  
Cellulose Fibers ◽  
Insulating Paper ◽  
Diagnosis Method

Our Surgical Strategy for Thoracic Outlet Syndrome

2018 ◽  
Vol 1 (2) ◽  
Author(s):  
Yasuhiro Nakajima
Keyword(s):  
Brachial Plexus ◽  
Thoracic Outlet Syndrome ◽  
Vascular Compression ◽  
Compression Tests ◽  
Provocation Tests ◽  
Diagnosis Method ◽  
Tunnel Syndrome ◽  
Electrophysiological Examination ◽  
Sensory Neural ◽  
Plexus Block

Surgical treatment for thoracic outlet syndrome (TOS) is a very controversial surgery because objective diagnosis, such as image and electrophysiological examination, is very difficult. Clinical provocation tests including brachial plexus compression tests, such as Morley and Roos, and vascular compression tests, such as Wright and Eden ,are not high in specificity and are likely to be positive even in healthy persons and patients with carpal tunnel syndrome. We place emphasis on the laterality of latency and amplitude in the sensory neural action potential (SNAP) of the medial antebrachial cutaneous nerve and ulnar nerve. After enough stretching exercises of scapular stabilizers and brachial plexus block, we always select surgery. In this presentation, I would like to show our diagnosis method and treatment strategy including surgery.

Towards High Accuracy Fault Diagnosis of Digital Circuits

2004 ◽  
Author(s):  
Camelia Hora ◽  
Stefan Eichenberger
Keyword(s):  
Fault Diagnosis ◽  
Fault Location ◽  
Digital Circuits ◽  
High Accuracy ◽  
Manufacturing Processes ◽  
Diagnosis Method ◽  
Technology Trend

Abstract Due to the development of smaller and denser manufacturing processes most of the hardware localization techniques cannot keep up satisfactorily with the technology trend. There is an increased need in precise and accurate software based diagnosis tools to help identify the fault location. This paper describes the software based fault diagnosis method used within Philips, focusing on the features developed to increase its accuracy.

Sign in / Sign up

Export Citation Format

Share Document