Results 111 to 120 of about 3,640,145 (204)

Study on air leakage law and gas extraction effect of “high drainage roadway + Y-type ventilation” working face

open access: yesMeikuang Anquan
In recent years, the gas control method of “Y-type ventilation+ high drainage roadway” has been widely used with its superior control effect. Affected by the negative pressure of high extraction roadway, the air leakage law of working face is more ...
Huhu LI   +5 more
doaj   +1 more source

The many faces of triple negative breast cancer.

open access: yesChirurgia (Bucharest, Romania : 1990), 2014
Triple negative breast tumors are described by the lack of immunohistochemical expression for hormone receptors (ER and PgR) and Her2 neu. The immunophenotype is, in general,associated with young age and high biological aggressiveness,its frequency in the literature ranging from 10 to 20%.
M, Comănescu   +3 more
openaire   +1 more source

Orienting Negative Politeness Strategies Towards the Hearer Negative Face in Disney’s Frozen Movie

open access: yesVISA: Journal of Vision and Ideas
The study aims to analyze the use of negative politeness strategies by characters in Disney's “Frozen” movie using Brown and Levinson's (1987) politeness theory, focusing on how these strategies address the hearer's negative face. The data of the research were taken from Disney's "Frozen” movie script and analyzed with the theory proposed by Brown and ...
null Putu Ayu Anggita Gangga Swari   +2 more
openaire   +1 more source

Who Can Work Where: Reducing Barriers to Labour Mobility in Canada [PDF]

open access: yes
Barriers to labour mobility in Canada remain a problem, even though Canadian governments have taken steps to reduce them. In the study, the author says Canada’s regulated professions and skilled trades, which represent about 11 percent of the workforce ...
Robert Knox
core  

Wet dust collector in fast excavation working face based on adaptive negative pressure drainage technology

open access: yesMeikuang Anquan
The wet dust collector with a negative-pressure dehydration structure can effectively prolong the service life of the dust collector in the fast driving working face of semi coal-rock roadway with high driving speed, large dust production and high ...
Bai LI   +3 more
doaj   +1 more source

Do countries default in “bad times”? [PDF]

open access: yes
This paper uses a new dataset to study the relationship between economic output and sovereign default for the period 1820-2004. We find a negative but surprisingly weak relationship between output and default.
Mark L. J. Wright, Michael Tomz
core  

Adaptive face recognition for mobility support robots using negative feature augmentation and Growing Neural Gas

open access: yesROBOMECH Journal
Mobility support robots can be made available for use by patients in hospital settings. To prevent the robot from being used by unauthorized patients, an identification system must be installed on the robot.
Chyan Zheng Siow   +3 more
doaj   +1 more source

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