Results 101 to 110 of about 223,295 (351)

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

open access: yesDeep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza   +3 more
wiley   +1 more source

ESTIMATE OF EFFICIENCY OF AN INFORMATION SYSTEM OF MONITORING AND CONTROL OF WEAPONS AND MILITARY EQUIPMENTS OPERATION AT A HIGHER MILITARY EDUCATIONAL INSTITUTION

open access: yesSučasnì Informacìjnì Tehnologìï u Sferì Bezpeki ta Oboroni, 2013
The choice of the functional cost effectiveness criterion is discussed. The criterion of the competence-valuation to determine the effectiveness of the control and operation management of arms and military equipment is elaborated.
Hanna V. Lunkova, Yurii V. Shabatura
doaj  

Environment, health and safety management in mining and other industries [PDF]

open access: yes, 2014
Thesis (Ph.D.) University of Alaska Fairbanks, 2014While environment and health and safety may appear to be two different areas, they may be integrated into Environment, Health and Safety (EHS).
Yoon, Seok J., 윤석준
core  

An optimizing microseismic method for rock burst early warning based on mining production process

open access: yesDeep Underground Science and Engineering, EarlyView.
A classification early warning method of rock burst based on hourly microseismic data is proposed, which can be combined with the on‐site production process to provide more timely warning. Abstract Microseismic (MS) events have been reported in nearly every coal mining country, which could well lead to rock burst in underground coal mines.
Zepeng Han   +6 more
wiley   +1 more source

ВИБІР ПОКАЗНИКІВ ТА КРИТЕРІЇВ ПРИ ОЦІНЮВАННІ ФУНКЦІОНАЛЬНОЇ СТІЙКОСТІ СИСТЕМИ РОЗВІДКИ ПОВІТРЯНОГО ПРОТИВНИКА ТА ОПОВІЩЕННЯ НА ЕТАПІ ЇЇ ПОБУДОВИ

open access: yesSučasnì Informacìjnì Tehnologìï u Sferì Bezpeki ta Oboroni, 2013
У статті наведені основні вимоги до оцінки функціональної стійкості системи розвідки повітряного противника та оповіщення.
Oleh V. Barabash, Volodymyr V. Kireienko
doaj  

Principles for management of risks of critical infrastructure [PDF]

open access: yes, 2018
On the basis of present knowledge, the critical infrastructure is a set of physical (technical and material), cyber and organizational subsystems of human system that are necessary for ensuring the protection of: human lives, health and security ...
Procházka J.   +2 more
core  

Motion planning and control of an installation robot for attitude adjustment of arc parts in underground shield tunneling

open access: yesDeep Underground Science and Engineering, EarlyView.
Inspired by spiders, the multilegged walk‐through assembling robot for arc parts achieves high‐precision synchronous control under heavy loads through dual‐layer hydraulic pose dynamics modeling and hierarchical pressure optimization, significantly enhancing shield tunneling assembly efficiency and precision.
Quan Xiao   +5 more
wiley   +1 more source

RATIONAL COMPROMISE SEARCHING METHOD IN ONE CLASS OF MULTIOBJECTIVE OPTIMIZATION PROBLEM IN EVALUATION OF INDETERMINATE OBJECTIVES SET BY THE FUNCTIONS OF ONE VARIABLE

open access: yesSučasnì Informacìjnì Tehnologìï u Sferì Bezpeki ta Oboroni, 2018
Evaluation of indeterminate forms is a current problem for a significant class of formalized system analysis tasks. Formally, the problems of indeterminate forms evaluation in the system analysis and the operations research theory are largely similar ...
Oleh V. Borovyk   +2 more
doaj  

From Brain Health to Brain Economy

open access: yes
Brain Health, EarlyView.
Yongjun Wang
wiley   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

open access: yesDeep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang   +5 more
wiley   +1 more source

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