Results 151 to 160 of about 34,337 (295)

Research on the Laws of Destructive Patterns and Control Measures of Overlying Rock in High‐Efficiency Large‐Scale Mining Faces

open access: yesEnergy Science & Engineering
With the continuous advancement of coal mining technology, the mining height and length of working faces in China have increased, and ultra‐long fully mechanized mining faces with large‐mining heights have become the prevailing layout trend in modern ...
Chen Gong   +5 more
doaj   +1 more source

Working to Recover the Essence of Education for the Sake of Teaching and Teacher Education: Towards a Phenomenological Understanding of the Forgotten, Ontological Aspects of Learning [PDF]

open access: yes, 2011
The current definition of a good teacher is grounded in sets of pre-determined competencies established and imposed upon schools by bureaucratic organizations that are, proximally and for the most part, removed from the foundational elements of education,
Magrini, James
core   +1 more source

Contract Labour, Job Quality and Turnover Intention—Evidence From Nigeria

open access: yesJournal of Agricultural Economics, EarlyView.
ABSTRACT Labour contracting, where intermediaries provide farmers with migrant workers, plays a central role in meeting the demand for seasonal labour on labour‐intensive farms. Yet this system poses underresearched challenges for both workers and farmers.
Olayinka Aremu   +3 more
wiley   +1 more source

Aspects of automation of selective cleaning [PDF]

open access: yes, 2005
Cleaning (pre-commercial thinning) is a silvicultural operation, primarily used to improve growing conditions of remaining trees in young stands (ca. 3 - 5 m of height). Cleaning costs are considered high in Sweden and the work is laborious.
Vestlund, Karin
core  

Promoting Methane Reductions Through Behavioural Nudges and Informational Boosts: A Field Choice Experiment in Japanese Rice Farming

open access: yesJournal of Agricultural Economics, EarlyView.
ABSTRACT Agricultural methane emissions represent a significant contributor to global climate change, with irrigated rice cultivation being one of the primary sources. Despite the availability of effective mitigation technologies, their adoption often remains limited due to behavioural and institutional constraints.
Shengyi Du   +4 more
wiley   +1 more source

Design of height measurement sensor for hydraulic support in fully mechanized working face

open access: yesGong-kuang zidonghua
A hydraulic support height measueement sensor based on Pascal's law is designed to address the difficulties in measuring the height, reliability, and stability of hydraulic supports in fully mechanized working faces. The height measurement sensor is equipped with a slender liquid tube, which is filled with methyl silicone oil.
GAO Siwei, GU Minyong, LI Dianpeng
openaire   +1 more source

Technology for Whom and for What? A Global South View of Tech Diplomacy

open access: yesGlobal Policy, EarlyView.
ABSTRACT International politics is linked to its technical‐social character. Also, technology is socially constructed and thereby not entirely neutral or impartial. A tech‐driven geopolitical landscape has been a defining feature of contemporary world politics.
Eugenio V. Garcia
wiley   +1 more source

Design of Real-time System of Working Condition Monitoring and Fault Diagnosis of Conveyors of Fully-mechanized Face

open access: yesGong-kuang zidonghua, 2010
In order to meet requirements of high efficient and reliable running of complete conveyors on fully-mechanized face of coal mine with annual production capacity of 10 million tons,a real-time system of working condition monitoring and fault diagnosis of ...
LEI Zhi-peng, SONG Jian-cheng
doaj  

Mozambique Cashew reforms revisited [PDF]

open access: yes
Cashew policy reforms in Mozambique have been controversial. They are often invoked by critics as an illustration of how agricultural policy reforms supported by international financial institutions may fail to have their intended effects.
Aksoy, M. Ataman, Yagci, Fahrettin
core  

Beyond Manoeuvre Theory for European Defence

open access: yesGlobal Policy, EarlyView.
ABSTRACT This article contributes to the debate about European defence in the light of the Russo‐Ukraine war and growing doubts about US commitment to Europe. It argues that Europeans need to fundamentally relearn the ability to imagine military strategy from a European viewpoint.
Lukas Mengelkamp, Sam Vincent
wiley   +1 more source

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