Engineering Commons^™

Mineralogical Variations With The Mining Depth In The Congo Copperbelt: Technical And Environmental Challenges In The Hydrometallurgical Processing Of Copper And Cobalt Ores, Michel Shengo Lutandula, W. S. Kitobo, M. B. Kime, M. P. Mambwe, T. K. Nyembo

Journal of Sustainable Mining

For a long time in the Democratic Republic of Congo, the mining of ores for the production of copper cathodes and salts of cobalt was mostly conducted in the near-surface oxidized mineralization of the Congo Copperbelt. An important part of this mineralization is found in geological settings where copper and cobalt mainly exist as mixtures of oxides and sulfides. With the depletion of surface-rich minerals, mining is taking place at depths where sulfide minerals are prevalent. Using current technologies, the hydrometallurgical processing of ores with high levels of sulfide minerals results in poor metal recovery due to their retention in …

In Search Of A Future For Mining: Participative Scenarios For Colombia, Santiago Arango-Aramburo, Ricardo Smith, Patricia Jaramillo, Yris Olaya, Adrian Saldarriaga, Oscar J. Restrepo, Yuly Arboleda, Carla Rua, Sebastian Bernal, Pablo E. Londono, Erik R. Larsen

Journal of Sustainable Mining

We describe and discuss the development of scenarios for the Colombian mining industry. The scenarios were developed with a large group of stakeholders from across the Colombian government, society, and commerce, all with interest in and/or affected by the future of the mining sector. The process resulted in the creation of three different scenarios for the Colombian mining sector to 2030. The article describes the participatory process used for involving the stakeholders, including the workshops and the mapping technique that was used. It also outlines the three scenarios and possible policies that should be considered by the Colombian government in …

Optimising The Management Of Mining Waste By Means Sentinel-2 Imagery: A Case Study In Joda West Iron And Manganese Mine (India), Daniela Guglietta, Girolamo Belardi, Daniele Passeri, Rosamaria Salvatori, Stefano Ubaldini, Barbara Casentini, Francesca Trapasso

Journal of Sustainable Mining

A smart economy minimizes the production of waste from mining activities and reuses waste as a potential resource, with the goal of moving towards a near-zero waste society. This paper presents integrated multidisciplinary methodology in order to optimise the management of mining waste. The test site is the FeeMn mine in Odisha (India). The mining waste present in the mine has been collected and afterwards X-Ray Powder Diffraction, X-Ray Fluorescence and spectral signatures analysis have been performed for mineralogical, chemical and spectral characterization of the materials. Finally, the classification and mapping of the characterized mining waste was carried out by …

The Influence Of Information Technology Governance Audit Using Cobit 5 For The Development Public Library : (Case Study : Public Library In East Java ), Ilham M, Anis Eliyana, Indrianawati Usman

Library Philosophy and Practice (e-journal)

This study current technological developments have entered almost into the lines of people's lives. Currently, many public library have grown even bigger. And this development does not escape the good management of information technology governance. To maximize management to a better level, public library need information technology governance audits. The information technology audit used in this study uses the COBIT 5 framework which focuses on the APO04 and DSS01 domains. This study aims to improve the quality of services owned and to increase its competitiveness. The results of this study refer to the vision and mission of the public library …

Bridging Gaps In Architectural Education: Developing A Professional And Career-Oriented Curriculum, Rana Al-Matarneh, Ashraf Mansour

Architecture and Planning Journal (APJ)

The concern about the future of architecture education has been growing in the last few decades. This phenomenon is powered by the sensation that the existing models of teaching and practicing architecture may not be appropriate enough to address the challenges of tomorrow. The aim of this research paper is to explore the missing links between the continuous chain of architecture education and the current state of the profession that leads the future. The research conducted a comprehensive review of literature, surveys of academics and Heads of School in Architecture, and the development of some case studies of the existing …

Determination Of The Rational Values Of The Parameters Of The Disc Rollers Of The Combined Unit, A.K. Igamberdiev, D.K. Muqimova

Irrigation and Melioration

In our country, repeated crops are sown in newly plowed lands. In such conditions, the use of combined units that perform several technological operations simultaneously in one pass is considered effective. However, due to the inadequacy and validity of the parameters of the working bodies for the quality of pre-sowing tillage in newly plowed lands, there is an increase in the number of passes, fuel consumption, loss of soil moisture and other costs and, as a result, the possibility of timely sowing and friendly germination of repeated crops is reduced . The rational parameters of the new design of disk …

2019 Symposium On Education In Entertainment And Engineering, Mary K. Pillotte, Rich Dionne

Symposium on Education in Entertainment and Engineering

No abstract provided.

The Lack Of Fire Safety Knowledge And Implementation The Case Of High-Rise Buildings, Mohamad Abou Chakra

Architecture and Planning Journal (APJ)

High-rise buildings are growing rapidly in number around the world. They are becoming important landmarks that mark out certain geographical areas. The fires of high-rise building have many characters not found in traditional low-rise buildings, like the variety of blazing factors, ways of fire spreading, and difficulty of evacuation. Hence, the protection features of conventional fire methods are not sufficient in designing towers. The paper, at first, summarizes the characteristics of high-rise buildings and fires, the unique features of Tall Buildings and the special life safety requirements for the high-rise buildings. Consequently, the topic of fire and life safety codes …

Data And Analysis Toolbox For Modeling The Nexus Of Food, Energy, And Water, Mojtaba Sadegh, Arvin Farid

Civil Engineering Faculty Publications and Presentations

Energy, water, and food resources are highly interdependent. Agricultural irrigation accounts for 84% of global consumptive freshwater use, the food supply chain demands up to 30% of global primary energy use, and roughly 80% of global electricity generation depends on water for cooling (an average of nearly 100 L of water withdrawn per kWh). Improving understanding of the complex interactions of this resource nexus is, therefore, a top priority for human well-being, sustainable development, and policymaking. Here, we present an interactive analysis toolbox, Nexus of Food, Energy, and Water (NeFEW), that synthesizes available global data to …

Santa Clara Magazine, Volume 61 Number 3, Fall 2020 [Print Issue V.61:2], Santa Clara University

Santa Clara Magazine

16 - THE GIFT Is sacrifice, given willingly and with love, what makes us human? Leslie Griffy.

20 - NOT A MOMENT, BUT A MOVEMENT From protests in Benson in 1969 to a multi-decade movement called Unity, students of color have consistently pushed SCU to progress. Matt Morgan.

28 - ON BEING BETTER Discover the ways we can better support each other, particularly as white people seek to become allies to people of color. Lauren Loftus.

32 - THE SACRIFICIAL TWEET Social media missteps are costly, perhaps now more than ever. Just what are we willing to give up to …

The Possibility Of Sustainable Investment By Re-Using Traditional Buildings As A Cultural Tourist Hostel: Case Study, Thurban Palace, Al-Namas Region, Asir Region, Ahmed Ali Bindajam

Mansoura Engineering Journal

Traditional architecture is a mirror that embodies the reality of architectural heritage, as it represents the description of architectural richness, highlighting the most important variables and consistent with functional solutions that take into account the climatic, social and environmental factors that meet the needs of society, its traditions and customs. The urban development and the economic renaissance in the Kingdom of Saudi Arabia witnessed an economic prosperity and this development and renaissance was accompanied by the migration of many villages and neighborhoods and thus formed a case from the beginning of the architectural and urban deterioration of these traditional and …

Evaluating The Stabilization Of Gypseous And Gypsiferous Sands Using Different Chemical Additives To Mitigate Gypsum Dissolution, Mohammed Kamil Faris

Theses and Dissertations

Gypsum, which is dihydrate calcium sulfate, (CaSO4.2H2O), is widely available in different sizes, from the size of a rock to the size of a few micrometers as a mineral, in different types of soils. It is primarily found mainly in arid and semi-arid areas around the world at different depths. Soils with gypsum and even gypsum rocks are very hard in their dry state. However, these soils and rock will experience remarkable dissolution upon wetting.

The dissolution phenomenon, which takes place in soils that contain gypsum, creates different geotechnical problems within the soil’s profile, along with foundation issues for structures …

Prospects Of The Development Of Unmanned Aerial Vehicles (Uavs), Rakhimjon Shokirov, Nuriddin Abdujabarov, Takhirov Jonibek, Kadamboy Saytov, Saidbek Bobomurodov

Technical science and innovation

This article outlines the current state of research and development for autonomous unmanned aircraft for civil use. Specifically, the history of UAVs for civil use, research and development in the world, and the topics and prospects for the control and operation of autonomous UAVs for civil use are defined. The perspectives for the use of unmanned aerial vehicles (UAVs) are addressed, programs due to the formation and problems preventing the use of UAVs are listed, and ways of increasing competitiveness are taken into account. This article provides an overview of research involving the advancement of UAV technology for the management …

Forecasting Vegetation Health In The Mena Region By Predicting Vegetation Indicators With Machine Learning Models, Sachi Perera, Wenzhao Li, Erik Linstead, Hesham El-Askary

Mathematics, Physics, and Computer Science Faculty Articles and Research

Machine learning (ML) techniques can be applied to predict and monitor drought conditions due to climate change. Predicting future vegetation health indicators (such as EVI, NDVI, and LAI) is one approach to forecast drought events for hotspots (e.g. Middle East and North Africa (MENA) regions). Recently, ML models were implemented to predict EVI values using parameters such as land types, time series, historical vegetation indices, land surface temperature, soil moisture, evapotranspiration etc. In this work, we collected the MODIS atmospherically corrected surface spectral reflectance imagery with multiple vegetation related indices for modeling and evaluation of drought conditions in the MENA …

Fixing Social Media: Toward A Democratic Digital Commons, Michael Kwet

Markets, Globalization & Development Review

In the past few years, big Social Media networks like Facebook, Twitter, and YouTube have received intense scrutiny from the intellectual classes. This article critiques the dominant strain of criticism, the neo-Brandeisian School of antitrust, for its narrow focus on “regulated competition” as an appropriate means to “fix social media”. This essay calls for a socialist alternative: a democratic social media commons based on free and open source technology, decentralization, and democratic socialist legal solutions. It reviews how existing solutions like the Fediverse and LibreSocial work, and how they may provide answers for a better way forward.

Proposed Framework For Smart Healthcare Services, Dalia K. A. A. Rizk, Hoda Hosny Prof. Dr., El-Sayed M. El-Horbaty Prof. Dr., Abdel-Badeeh M. Salem Prof. Dr.

Future Computing and Informatics Journal

Smart healthcare is of great interest to researchers and governments due to the increasing development of new smart cities. However, there is no current standard practice to format the cloud computing infrastructure and to assist the healthcare system architect in designing a comprehensive solution for the basic services that are required by the healthcare users while taking into consideration a balanced approach towards their specific functional and non-functional needs such as openness, scalability, concurrency, interoperability and security factors. The integration of smart healthcare services with cloud computing needs a concrete framework. The main objective of this paper is to analyze …

Global Convergence Of Covid-19 Basic Reproduction Number And Estimation From Early-Time Sir Dynamics, Gabriel G. Katul, Asaad Mrad, Sara Bonetti, Gabriele Manolia, Anthony J. Parolari

Civil and Environmental Engineering Faculty Research and Publications

The SIR (‘susceptible-infectious-recovered’) formulation is used to uncover the generic spread mechanisms observed by COVID-19 dynamics globally, especially in the early phases of infectious spread. During this early period, potential controls were not effectively put in place or enforced in many countries. Hence, the early phases of COVID-19 spread in countries where controls were weak offer a unique perspective on the ensemble-behavior of COVID-19 basic reproduction number inferred from SIR formulation. The work here shows that there is global convergence (i.e., across many nations) to an uncontrolled R_o=4.5 that describes the early time spread of COVID-19. This value …

100% Renewable Energy Grid For Rural Electrification Of Remote Areas: A Case Study In Jordan, Loiy Al-Ghussain, Mohammad Abujubbeh, Adnan Darwish Ahmad, Ahmad M. Abubaker, Onur Taylan, Murat Fahrioglu, Nelson K. Akafuah

Institute of Research for Technology Development Faculty Publications

Many developing countries suffer from high energy-import dependency and inadequate electrification of rural areas, which aggravates the poverty problem. In this work, Al-Tafilah in Jordan was considered as a case study, where the technical, economic, and environmental benefits of a decentralized hybrid renewable energy system that can match 100% of the city demand were investigated. A tri-hybrid system of wind, solar, and hydropower was integrated with an energy storage system and optimized to maximize the match between the energy demand and production profiles. The optimization aimed at maximizing the renewable energy system (RES) fraction while keeping the levelized cost of …

Decentralized Renewable Hybrid Mini-Grids For Rural Communities: Culmination Of The Irep Framework And Scale Up To Urban Communities, Blessing Ugwoke, Adedoyin Adeleke, Stefano P. Corgnati, Joshua M. Pearce, Pierluigi Leone

Michigan Tech Publications, Part 1

The Integrated Rural Energy Planning (IREP) framework offers a unified road map for locating, planning and operating decentralized renewable hybrid off-grid energy systems for localized (rural) applications in low-income countries. This paper presents the culmination of the IREP framework and aims to illustrate the final step of the IREP framework for two communities in Nigeria. It is focused on two aspects. Firstly, the techno-economic modeling (investment and operation optimization) of a hybrid mini-grid system using HOMER Pro, a techno-economic evaluation tool; and evaluating the benefits of demand side management (DSM) based on energy efficiency on the overall system economics using …

A Scoring Model To Evaluate Offshore Oil Projects: Case Of Eni And Mellitah Oil & Gas, Abdulhakim Giadedi

Dissertations and Theses

Offshore oil projects have many different and unique characteristics, such as larger project size, higher number of scopes, and higher complexity. In fact, offshore oil projects described as mega projects are ones that require significant assessment and acquisition methods in order to reduce risks and failures. Traditionally, cash flow analysis and return on investment are the most known factors to evaluate offshore oil projects. However, there are several other internal and external factors that affect the overall performance of offshore oil projects. A comprehensive approach and advanced tools are required to evaluate these factors that can have a significant impact …

Aligning Performance Management Systems For Lasting Outcomes In Humanitarian Operations, Kalyn M. Howard

Theses and Dissertations

Logistics is dynamic, expansive, and critical to organizational success. While it is generally believed that effective logistics management is associated with positive performance outcomes, the links between organizational practice and performance are understudied. This dissertation leverages resource-based theory and organizational learning theory to examine organizational practice and performance in non-traditional logistics settings, with particular focus on military organizations and humanitarian operational settings. First, a meta-analytical study establishes generalizable associations between various operations management practices and performance outcomes. Then, this is applied to dynamic humanitarian logistics settings, exploring how practitioners perceive practice and performance, and how this is reported and documented …

Bs News September/October

Building Services Engineering

No abstract provided.

Low-Latency Networked Music Collaborations: Does “Good Enough” Do Enough Good?, Gareth Dylan Smith, Zack Moir, Paul Ferguson, Gill Davies

Journal of Network Music and Arts

LoLa is a cutting-edge technology that enables low latency, real-time collaborations across vast distances using high-bandwidth, low-jitter networks. It has the capacity to transform how music is made and experienced. It has been utilized on a relatively small scale to date, primarily for teaching and performances associated with music colleges and concert halls. In this article we discuss various ways in which LoLa technology is “good enough” by describing examples of recent networked music performances “anchored” at Edinburgh Napier University, Scotland. We discuss the ways in which processes and outcomes were “good enough” for the sound engineer, participating musicians, and …

Evaluation Of Sustainability Of Irish Road Transport Sector And Its Comparison With European Union Countries, Megha Jose Kandappasery, Boban Djordjevic, Bidisha Ghosh

Civil Engineering Research in Ireland 2020

Transport sustainability has been the topic of discussion since the past two decades and its importance has been recognised by most countries. Therefore, strategies and policies incorporating sustainable growth and development have been initiated as a measure to steer transport growth in the right path. This notion has led researchers to develop many ways of measuring transport sustainability, especially the frequently used road transport sector. Measurement of sustainability of the transport sector has been carried out using different methodologies in the past. Considering the complexity and multi-dimensional aspects of sustainability, multi-criteria analysis decision making tools have been considered in this …

A Two-Stage Direct Integration Approach To Find The Railway Track Profile Using In-Service Trains, Yifei Ren, Jennifer Kennahan, Eugene O'Brien

Civil Engineering Research in Ireland 2020

The railway track is an important element in transportation networks. In recent years, drive-by monitoring of railways has become more popular. Using data measured from in-service trains, the railway profile can be found. In previous research, a complex optimiziton method is used to calculate the railway profile. This paper introduces a new two-stage direct integration approach to find the same track profile much more efficiently. The calculated track profile is similar to a ‘true’ profile and can be used to monitor the condition of the track.

An Experimental Investigation Of The Optimum Properties And Conditions For Use Of Anionic Emulsions In Road Maintenance Applications, Simonas Ignatavicius, Alan Kavanagh, David Colleran, Michael J. Brennan, Shane Newell

Civil Engineering Research in Ireland 2020

Bitumen emulsions are used for a range of road maintenance applications, including surface dressing, gravel seals, slurry seals, tack coating, cold-mix asphalt and in situ pavement recycling. The emulsions used can be classified as being either cationic (i.e. possessing a positive electrostatic surface charge) or anionic (i.e. carrying a negative electrostatic surface charge). The vast majority of emulsions used for such applications in Europe are cationic, while anionic bitumen emulsions are used widely throughout North America and Africa. The aims of the experimental study described in this paper were (a) to investigate why one or the other emulsion type is …

An Experimental Investigation Of The Optimum Properties And Conditions For Use Of Anionic Emulsions In Road Maintenance Applications, Simonas Ignatavicius, Alan Kavanagh, David Colleran, Michael J. Brennan, Shane Newell

Civil Engineering Research in Ireland 2020

Bitumen emulsions are used for a range of road maintenance applications, including surface dressing, gravel seals, slurry seals, tack coating, cold-mix asphalt and in situ pavement recycling. The emulsions used can be classified as being either cationic (i.e. possessing a positive electrostatic surface charge) or anionic (i.e. carrying a negative electrostatic surface charge). The vast majority of emulsions used for such applications in Europe are cationic, while anionic bitumen emulsions are used widely throughout North America and Africa. The aims of the experimental study described in this paper were (a) to investigate why one or the other emulsion type is …

Analysis And Optimisation Of Tii’S Pams Reset Values And Deterioration Models For Irish Pavement Conditions, James Quinn, Raymond Mcgowan, Tomas O'Flaherty

Civil Engineering Research in Ireland 2020

Ireland has a national road network of approximately 5300km that is managed by Transport Infrastructure Ireland (TII). TII create yearly pavement maintenance and renewal programs from the operation of a Pavement Asset Management System (PAMS). Accurate pavement deterioration models and reset values are an essential part of PAMS and are required for life cycle cost analysis (LCCA). Pavement maintenance and renewal schemes are prioritised based on the LCCA's largest benefit to cost ratio, and therefore optimise the annual pavement maintenance and renewal budget. Currently, TII implement pavement deterioration models and reset values from Austria's and Belgium's PAMS, and are not …

Analysis And Optimisation Of Tii’S Pams Reset Values And Deterioration Models For Irish Pavement Conditions, James Quinn, Raymond Mcgowan, Tomas O'Flaherty

Civil Engineering Research in Ireland 2020

Ireland has a national road network of approximately 5300km that is managed by Transport Infrastructure Ireland (TII). TII create yearly pavement maintenance and renewal programs from the operation of a Pavement Asset Management System (PAMS). Accurate pavement deterioration models and reset values are an essential part of PAMS and are required for life cycle cost analysis (LCCA). Pavement maintenance and renewal schemes are prioritised based on the LCCA's largest benefit to cost ratio, and therefore optimise the annual pavement maintenance and renewal budget. Currently, TII implement pavement deterioration models and reset values from Austria's and Belgium's PAMS, and are not …

Feasibility Study On Environmental Protection Reform Of Ship Stern Tube System Based On Water Lubrication, Yang Cui

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.