The 12 Greatest Challenges for Space Exploration | WIRED
This is the problem of space debris, and it's very real. The US Space Surveillance Network has eyes on 17,000 objects—each at least the size …Đọc thêm
Top Challenges of Big Data & How to Overcome Them | Datamation
These three characteristics cause many of the challenges that organizations encounter in their big data initiatives. Some of the most common of those big data challenges include the following: 1. Dealing with data growth. The most obvious challenge associated with big data is simply storing and analyzing all that information.Đọc thêm
1.1 PHASES OF A MINING PROJECT - ELAW
The first way in which proposed mining projects differ is the proposed method of moving or excavating the overburden. What follows are brief descriptions of the most common methods. 188.8.131.52 Open-pit mining Open-pit mining is a type of strip mining in which …Đọc thêm
The Ways To Reduce Negative Effects Of Mining Activities ...
Mining is certainly capable to damage ecosystem and instigate land degradation as well as air, water and land pollution. Besides, it also has damaging effects to human health and causes to lots of social, economic and political turbulences. On the other hand, the mining activity is worthy in our economy.Đọc thêm
Some Challenges of Deep Mining - ScienceDirect
Although some surface mines now operate at depths in excess of 1 km, slope stability and other issues dictate a change to underground mining if the orebody continues in depth. For classical underground mining, that is, where miners extract ore via shafts, tunnels, and various mining methods, the depth to which the mine can be operated ...Đọc thêm
5 Ways to Make Mining More Sustainable - Empowering Pumps ...
Discover five ways the mining industry can reduce environmental impact and make its practices more sustainable. 1. Lower-Impact Mining Techniques. Traditional mining techniques can have a severe impact on the environment, and some popular methods — like open pit and underground mining — present some of the most significant environmental risks.Đọc thêm
Peter Wirth, Barbara Černič Mali, Wolfgang Fischer (Hrsg ...
Problems, Potentials, Possibilities ISBN 978-3-86581-294-0 272 Seiten, 16,5 x 23,5 cm, 29,95 Euro ... Mining is a dynamic industry, with some resources being mined for centuries until reser- ... unemployment with all the associated social impacts. Mining skills are mostly incompatibleĐọc thêm
Chapter 17. Analyzing Community Problems and Solutions ...
As these problems illustrate, some problems are more serious than others; the problem of child hunger is a much more severe problem than the fact that the new youth center has no exercise equipment, although both are problems that can and should be addressed. Generally, problems that affect groups of people - children, teenage mothers, the ...Đọc thêm
Consequences and Effects of Global Warming - What is the ...
Some will make it, and some won't. According to the Intergovernmental Panel on Climate Change's 2014 assessment, many land, freshwater, and …Đọc thêm
How to Solve NPSHa Problems | Pumps & Systems
My last five articles covered the calculation of net positive suction head available (NPSHa). In the November 2018 issue, I summarized the NPSHa concept and said that firmly grasping the theory and completing the calculation can often be a tricky process. However, with an understanding of the basics and some practice, you can gain confidence and work through most applications.Đọc thêm
Image 1. A testament to past gemstone mining activity ...
logical problems associated with the world of mining can be overcome by designing ... offers some constructive suggestions of how impacts can be minimized or elimi-nated. This last column must be further researched and elaborated upon if the industry is serious about overcoming the environmental challenges that plague the production level. ...Đọc thêm
Distance Learning: Promises, Problems, and Possibilities
Despite the problems, many users like technologies such as compressed video and see continued growth in the area. This paper will examine some of the current research and thought on the promises, problems, and the future possibilities in modern distance learning, particularly types that are delivered via electronic means.Đọc thêm
Overcoming Security Challenges Associated with Big Data
Overcoming Security Challenges Associated with Big Data. The amount of digital data in the universe is growing at an exponential rate, doubling in size every two years. By 2020 the digital universe, the data we create and replicate annually, is estimated to reach 44 zeta bytes, or 44 trillion gigabytes. This massive amount of data is referred ...Đọc thêm
Using and analysing focus groups: limitations and ...
and possibilities JANET SMITHSON (Received 18 February 1998; accepted 2 February 2000) The paper examines some methodological issues associated with the use and analysis of focus groups in social science research. It is argued that what distinguishes this methodology from other methods is the interactions which take place within focus groups,Đọc thêm
Association Analysis: Basic Concepts and Algorithms
6.1 Problem Deﬁnition 331 A brute-force approach for mining association rules is to compute the sup-port and conﬁdence for every possible rule. This approach is prohibitively expensive because there are exponentially many rules that can be extracted from a data set. More speciﬁcally, the total number of possible rules extractedĐọc thêm
The barriers women faced in the mining industry in South ...
There are huge possibilities for growth, and international networking, and women may just bring in some solutions to problems that have plagued the sector with solutions not yet considered," she said. "I think if the mining sector were to engage more with smaller businesses, then even more women would be positively impacted.Đọc thêm
Environmental Effects of Extraction Mineral Resources ...
Water pollution is a common feature of mining and associated mineral processing activities. Erosion of external overburden dumps during heavy rains is a major water pollution problem in mining areas. Abandoned mines and the disposal of chemicals used in refining are significant sources of water pollution in mining areas. (e) Vibrations:Đọc thêm
The ethics of artificial intelligence: Issues and initiatives
A second case study explores ethical issues associated with the development of autonomous vehicles (AVs). In the context of driving, six levels of automation are recognised by SAE International: no automation, hands on (e.g. Cruise Control), hands off (driver still monitors driving), eyes off (driverĐọc thêm
Solving the Ecological Problems of Capitalism: Capitalist ...
Solving the Ecological Problems of Capitalism: Capitalist and Socialist Possibilities. March 2011. Organization & Environment 24 (1):54-73. DOI: 10.1177/1086026611402010. Authors: Andrew W. …Đọc thêm
The five key challenges in implementing ICT for ...
The emergence of new ICT possibilities potentially presents some more fundamental and far-reaching questions, challenging or even undermining …Đọc thêm
Opportunities and Challenges of Rail Haulage Systems in ...
Based on the models described above, a rail system can be considered as the most suitable choice for underground haulage in many mining scenarios. Due to the technology's very low operating costs and accordingly low TCO for multiple haulage scenarios, some of the world's biggest mining companies have implemented rail haulage systems.Đọc thêm
4 Coal Mining and Processing | Coal: Research and ...
The environmental problems associated with active and abandoned mines and their abatement, particularly land reclamation and water quality maintenance, and the proper handling and disposal of the spoils and wastes from mining operations (e.g., mountain top coal mining, coal combustion residues), also receive regulatory attention from the U.S ...Đọc thêm
10 essential risk management skills that every manager needs
Analytical risk assessment skills. It is pretty obvious that in order for any manager to asses and predict risk, you must have analytical skills, but it really goes further than that. Being able to collect and analyse data, is one thing. But if you are able to use that data to make strategic or tough decisions, you're well on your way to ...Đọc thêm
coal - Problems associated with the use of coal | Britannica
coal - coal - Problems associated with the use of coal: Coal is abundant and inexpensive. Assuming that current rates of usage and production do not change, estimates of reserves indicate that enough coal remains to last more than 200 years. There are, however, a variety of problems associated with the use of coal. Mining operations are hazardous.Đọc thêm
Proteomics: Challenges, Techniques and Possibilities to ...
1. Introduction. The term proteomics describes the study and characterization of complete set of proteins present in a cell, organ, or organism at a given time .In general, proteomic approaches can be used (a) for proteome profiling, (b) for comparative expression analysis of two or more protein samples, (c) for the localization and identification of posttranslational modifications, and (d ...Đọc thêm
Externalities: Problems and Solutions
1970 to provide public-sector solutions to the problems of ex-ternalities in the environment. Public policy makers employ two types of remedies to resolve the problems associated with negative externalities: 1) price policy: corrective tax or subsidy equal to marginal damage per unit 2) quantity regulation: government forces rms to produceĐọc thêm
Land Subsidence - USGS
Long-term extraction of groundwater has caused significant land subsidence and associated aquifer-system compaction, which has damaged colonial-era buildings, buckled highways, and disrupted water supply and waste-water drainage. Some buildings have been deemed unsafe and have been closed and many others have needed repairs to keep them intact.Đọc thêm
Ethereum's Casper protocol explained in simple terms ...
With Ethereum mining set to go the way of the Dodo, Casper will eliminate the mining centralization that threatens Ethereum. Reduced risk of 51% attacks. Validators under a PoS system will have their own funds tied up as a stake in the network, which means it's in their own interest to act in the best interest of the network as a whole.Đọc thêm
Bitcoin Mining Definition: Is It Still Profitable?
Bitcoin mining is the process of creating new bitcoin by solving a computational puzzle. Bitcoin mining is necessary to maintain the ledger of transactions upon which Bitcoin is based. Miners have ...Đọc thêm
Benefits & Risks of Artificial Intelligence - Future of ...
Benefits & Risks of Artificial Intelligence. &. " Everything we love about civilization is a product of intelligence, so amplifying our human intelligence with artificial intelligence has the potential of helping civilization flourish like never before – as long as we manage to keep the technology beneficial. ".Đọc thêm
Reaching for the Sky: Using Drones to Propel the Mining ...
Industry 4.0 and associated technologies such as Cloud, Analytics, AI, and Internet of Things (IoT) to address a whole ... Some mining companies are ... that takes into consideration the different possibilities of addressing issues, which could prevent M&M companies fromĐọc thêm
Calculating Consequences: The Utilitarian Approach ...
Problems With Utilitarianism While utilitarianism is currently a very popular ethical theory, there are some difficulties in relying on it as a sole method for moral decision-making. First, the utilitarian calculation requires that we assign values to the benefits and harms resulting from our actions and compare them with the benefits and harms ...Đọc thêm
Mining Problems and Possible Solutions - Tasmanian Times
The overburden from an open pit mine (the world's preferred mining method) sometimes reaches five times the mass of minerals removed for processing. Overburden is piled near the mine and can become unstable and dangerous. Some overburden mountains are as high as 200m and can be poisonous to ground water and animal life.Đọc thêm
Environmental Risks of Mining
When companies break up materials during mining, the dust can release a variety of heavy metals commonly associated with health problems. As dust, these minerals (such as the asbestos-like mineral riebeckite) can be absorbed into lung tissue, causing problems like pneumoconiosis and silicosis, commonly known as "Black Lung" (Paul & Campbell, 2011).Đọc thêm
Opportunities and Challenges in Deep Mining: A Brief ...
It also addresses some technical geomechanical issues associated with deep mining. Some of the current challenges, advances, and prospective issues in deep mining can be summarized as follows: (1) Deep mining will become common in the future as coal and mineral resources at shallow depths gradually become exhausted.Đọc thêm