Open Access. Powered by Scholars. Published by Universities.®

Science and Technology Studies Commons

Open Access. Powered by Scholars. Published by Universities.®

6,541 Full-Text Articles 7,863 Authors 1,597,854 Downloads 145 Institutions

All Articles in Science and Technology Studies

Faceted Search

6,541 full-text articles. Page 5 of 249.

Dynamic Properties Of Mixtures Of Waste Materials, Yujie Qi, Buddhima Indraratna, J S. Vinod 2018 University of Wollongong

Dynamic Properties Of Mixtures Of Waste Materials, Yujie Qi, Buddhima Indraratna, J S. Vinod

Faculty of Engineering and Information Sciences - Papers: Part B

The stockpiling of waste mining by-products, i.e. steel furnace slag (SFS) and coal wash (CW) has brought significant environmental hazard and attracted research attention to reuse them in a more innovative way. In recent years, SFS+CW mixtures have been successfully applied in geotechnical projects, while the inclusion of rubber crumb (RC, from waste tyres) will extend them into dynamic projects. Thus the investigation of the geotechnical properties of SFS+CW+RC mixtures under dynamic loading is in urgent need. In this paper, the dynamic properties (i.e. shear modulus and damping ratio) have been explored based on extensive ...


Evaluating The Properties Of Mixtures Of Steel Furnace Slag, Coal Wash, And Rubber Crumbs Used As Subballast, Buddhima Indraratna, Yujie Qi, Ana Heitor 2018 University of Wollongong

Evaluating The Properties Of Mixtures Of Steel Furnace Slag, Coal Wash, And Rubber Crumbs Used As Subballast, Buddhima Indraratna, Yujie Qi, Ana Heitor

Faculty of Engineering and Information Sciences - Papers: Part B

Steel furnace slag (SFS) and coal wash (CW) are two common by-products from the coal-mining and steel industries in Australia. Rubber crumbs (RC) is a material derived from waste tires contributing to environmental problems in most developed countries. Reusing and recycling these waste materials is not only economically beneficial and environmentally sustainable, but it also helps to address geotechnical problems such as track degradation. In this study, SFS, CW, and RC are blended to explore the feasibility of obtaining an energy-absorbing capping layer with properties similar or superior to conventional subballast. Comprehensive laboratory investigations have been carried out to study ...


Effect Of Rubber Crumbs On The Cyclic Behavior Of Steel Furnace Slag And Coal Wash Mixtures, Yujie Qi, Buddhima Indraratna, Ana Heitor, J S. Vinod 2018 University of Wollongong

Effect Of Rubber Crumbs On The Cyclic Behavior Of Steel Furnace Slag And Coal Wash Mixtures, Yujie Qi, Buddhima Indraratna, Ana Heitor, J S. Vinod

Faculty of Engineering and Information Sciences - Papers: Part B

The practical application of waste materials such as steel furnace slag (SFS) and coal wash (CW) is becoming more prevalent in many geotechnical projects. While adding rubber crumbs (RCs) from recycled tires into mixtures of SFS and CW not only solves the problem of large stockpiles of waste tires, it also can provide an energy-absorbing medium that will reduce vibration and prevent track degradation. Thus, the engineering insight into the effect that rubber crumbs have on the dynamic behavior of SFS þ CW þ RC mixtures is in urgent demand. In this study the influence that RC contents and confining ...


The Influence Of Rubber Crumbs On The Energy Absorbing Property Of Waste Mixtures, Yujie Qi, Buddhima Indraratna, Ana Heitor, J S. Vinod 2018 University of Wollongong

The Influence Of Rubber Crumbs On The Energy Absorbing Property Of Waste Mixtures, Yujie Qi, Buddhima Indraratna, Ana Heitor, J S. Vinod

Faculty of Engineering and Information Sciences - Papers: Part B

The practical application of waste materials such as steel furnace slag (SFS) and coal wash (CW) is becoming more prevalent in civil engineering. While the addition of rubber crumbs (RC) derived from waste tyres can influence the geotechnical properties of the mixtures of SFS and CW significantly, especially the energy absorbing property. In this paper, the energy absorbing property of the SFS+CW+RC mixtures under static loading has been evaluated by the strain energy density. As expected, the energy absorbing capacity of the waste mixture increases with the addition of RC.To further illustrate the influence of rubber crumbs ...


Fast Multi-Resource Allocation With Patterns In Large Scale Cloud Data Center, Jiyuan Shi, Junzhou Luo, Fang Dong, Jiahui Jin, Jun Shen 2018 Southeast University

Fast Multi-Resource Allocation With Patterns In Large Scale Cloud Data Center, Jiyuan Shi, Junzhou Luo, Fang Dong, Jiahui Jin, Jun Shen

Faculty of Engineering and Information Sciences - Papers: Part B

How to achieve fast and efficient resource allocation is an important optimization problem of resource management in cloud data center. On one hand, in order to ensure the user experience of resource requesting, the system has to achieve fast resource allocation to timely process resource requests; on the other hand, in order to ensure the efficiency of resource allocation, how to allocate multi-dimensional resource requests to servers needs to be optimized, such that server's resource utilization can be improved. However, most of existing approaches focus on finding out the mapping of each specific resource request to each specific server ...


Dynamic Random Arching In The Flow Field Of Top-Coal Caving Mining, Ningbo Zhang, Changyou Liu, Xiaojie Wu, Ting X. Ren 2018 University of Wollongong, China University of Mining and Technology

Dynamic Random Arching In The Flow Field Of Top-Coal Caving Mining, Ningbo Zhang, Changyou Liu, Xiaojie Wu, Ting X. Ren

Faculty of Engineering and Information Sciences - Papers: Part B

The large mining height fully mechanized top-coal caving mining technique has developed rapidly and become the most extensively used mining method for ultra-thick coal seams. The arching of coal/gangue and the drawing out of gangue are peculiar phenomena in the process of fully mechanized top-coal caving mining, which not only affects the recovery of top-coal, but also affects the quality of the coal. This paper studies the arching phenomenon in top-coal caving mining process of ultra-thick coal seam. A series of laboratory granular material simulation experiments were performing and a top-coal arching model in the framework of mechanics was ...


Flow Partitioning In Rectangular Open Channel Flow, Yu Han, Shu-qing Yang, Muttucumaru Sivakumar, Liu-Chao Qiu, Jian Chen 2018 China Agricultural University

Flow Partitioning In Rectangular Open Channel Flow, Yu Han, Shu-Qing Yang, Muttucumaru Sivakumar, Liu-Chao Qiu, Jian Chen

Faculty of Engineering and Information Sciences - Papers: Part B

Hydraulic engineers often divide a flow region into subregions to simplify calculations. However, the implementation of flow divisibility remains an open issue and has not yet been implemented as a fully developed mathematical tool for modeling complex channel flows independently of experimental verification. This paper addresses whether a three-dimensional flow is physically divisible, meaning that division lines with zero Reynolds shear stress exist. An intensive laboratory investigation was conducted to carefully measure the time-averaged velocity in a rectangular open channel flow using a laser Doppler anemometry system. Two innovative methods are employed to determine the locations of division lines based ...


The Ideological Alignment Of Smart Urbanism In Singapore: Critical Reflections On A Political Paradox, Lily KONG, Orlando Sebastian Isambard WOODS 2018 Singapore Management University

The Ideological Alignment Of Smart Urbanism In Singapore: Critical Reflections On A Political Paradox, Lily Kong, Orlando Sebastian Isambard Woods

Research Collection School of Social Sciences

Over the past decade, much has been written about the potential of smart urbanism to bring about various and lasting forms of betterment. The embedding of digital technologies within urban infrastructures has been well documented, and the efficiencies of smart models of urban governance and management have been lauded. More recently, however, the discourse has been labelled ‘hegemonic’, and accused of developing a view of smart technology that is blinkered by its failure to critique its socio-political effects. By focusing on the case of Singapore’s ‘Smart Nation’ initiative, this paper embraces the paradoxes at the heart of smart urbanism ...


Bursting The Filter Bubble: Information Literacy And Questions Of Valuation, Navigation, And Control In A Digital Landscape, Komysha Hassan 2018 University of Central Florida

Bursting The Filter Bubble: Information Literacy And Questions Of Valuation, Navigation, And Control In A Digital Landscape, Komysha Hassan

Honors in the Major Theses

The evolution of social media platforms and other public forums in the digital realm has created an explosion of user-generated content and data as a component of the already content-saturated digital landscape. The distributed, horizontal nature of the internet as a platform makes it difficult to ascertain value and differentiate between texts of varying validity, bias, and purpose. In addition, the internet is not an inanimate interface. As Pariser (2011) argues, content aggregators, such as Google, actively filter, personalize, and therefore limit each individual's access to information, in both range and type. This has created a crisis of information ...


Shift-Tail Equivalence And An Unbounded Representative Of The Cuntz-Pimsner Extension, Magnus Goffeng, Bram Mesland, Adam C. Rennie 2018 Chalmers University of Technology,

Shift-Tail Equivalence And An Unbounded Representative Of The Cuntz-Pimsner Extension, Magnus Goffeng, Bram Mesland, Adam C. Rennie

Faculty of Engineering and Information Sciences - Papers: Part B

We show how the fine structure in shift-tail equivalence, appearing in the non-commutative geometry of Cuntz-Krieger algebras developed by the first two listed authors, has an analogue in a wide range of other Cuntz-Pimsner algebras. To illustrate this structure, and where it appears, we produce an unbounded representative of the defining extension of the Cuntz-Pimsner algebra constructed from a finitely generated projective bi-Hilbertian module, extending work by the third listed author with Robertson and Sims. As an application, our construction yields new spectral triples for Cuntz and Cuntz-Krieger algebras and for Cuntz-Pimsner algebras associated to vector bundles twisted by an ...


The Evolution Of Requirements Practices In Software Startups, Catarina Gralha, Daniela Damian, Anthony Wasserman, Miguel Goulão, João Araújo 2017 Universidade Nova de Lisboa

The Evolution Of Requirements Practices In Software Startups, Catarina Gralha, Daniela Damian, Anthony Wasserman, Miguel Goulão, João Araújo

Tony Wasserman

We use Grounded Theory to study the evolution of requirements practices of 16 so ware startups as they grow and introduce new products and services. These startups operate in a dynamic environment, with significant time and market pressure, and rarely have time for systematic requirements analysis. Our theory describes the evolution of practice along six dimensions that emerged as relevant to their requirements activities: requirements artefacts, knowledge management, requirements-related roles, planning, technical debt and product quality. Beyond the relationships among the dimensions, our theory also explains the turning points that drove the evolution along these dimensions. These changes are reactive ...


Information Technology Use In West African Agriculture – Challenges And Opportunities: A Panel Discussion, Maurice Dawson, Damon Walker, Ashley Moss 2017 University of Missouri - St Louis

Information Technology Use In West African Agriculture – Challenges And Opportunities: A Panel Discussion, Maurice Dawson, Damon Walker, Ashley Moss

Maurice Dawson

Many countries in the Economic Community of West African States (ECOWAS) are using Information Communications Technology (ICT) to enhance agriculture development and production. To do this efficiently the John Ogonowski and Doug Bereuter Farmer-to-Farmer Program managed for West Africa by Winrock International has been tasked with providing volunteer assignments to ministries of agriculture. The University of Missouri - Saint Louis (UMSL) has entered a partnership with Winrock International to offer upper-level undergraduate and graduate students the opportunity to provide technical assistance to international government entities. In this panel; we discuss findings and opportunities for improvement in Guinea and Senegal as they ...


International Journal Of Information Privacy, Security And Integrity, James Stewart, Maurice Dawson 2017 Roosevelt University

International Journal Of Information Privacy, Security And Integrity, James Stewart, Maurice Dawson

Maurice Dawson

Research on cyber security related to social engineering has expanded from its purely technological orientation into explaining the role of human behavior in detecting deception. In the broadest definition, social engineering, in the context of information security, is the manipulation of individuals to perform actions that cause harm or increase the probability of causing future harm. Human personality traits significantly contribute to the probability that an individual is susceptible to manipulation related to social engineering deception attacks and exploits (Maurya, 2013). The outcome of the attacks and objective is the alteration of normal and rational decision making as described in ...


"The Devil Is In The Details:" Inland Northwest Stakeholders’ Views On Three Forest-Based Bioenergy Scenarios, Soren Newman, Darin Saul, Robert Keefe, Ryan Jacobson, Tamara Laninga, Jillian Moroney 2017 University of Idaho

"The Devil Is In The Details:" Inland Northwest Stakeholders’ Views On Three Forest-Based Bioenergy Scenarios, Soren Newman, Darin Saul, Robert Keefe, Ryan Jacobson, Tamara Laninga, Jillian Moroney

University Author Recognition Bibliography: 2017

Public and private initiatives are actively exploring a range of forest-based bioenergy development options in the Inland Northwest of the United States. These efforts are motivated in part by the potential to generate renewable energy while creating a market for forest residues that would facilitate hazardous fuels reduction and provide economic opportunities. Understanding stakeholders’ perspectives is critical to the feasibility and long-term viability of bioenergy projects. This study presents stakeholder perspectives on forest-based bioenergy development strategies for communities in the forested areas of Idaho, western Montana, eastern Washington, and eastern Oregon. We developed three scenarios based on bioenergy initiatives currently ...


Reaction To Safety Equipment Technology In The Workplace And Implications: A Study Of The Firefighter’S Hood, Brian W. Ward 2017 University of Maryland

Reaction To Safety Equipment Technology In The Workplace And Implications: A Study Of The Firefighter’S Hood, Brian W. Ward

The Qualitative Report

In the 1990s the firefighter’s hood became a standard article of safety equipment worn by municipal firefighters, eliciting a negative reaction among many of these firefighters. I used data from interviews with 42 firefighters to explain why this reaction occurred. Data analysis revealed that negative reactions ultimately stemmed from the hood’s disruption of autonomy, repudiation of the complex mental and physical skill needed to perform tasks required of firefighters, and hindrance in negotiating the life-threatening environment created by a fire. These findings indicate that when introducing new safety equipment technology to emergency response workers, their reaction to this ...


A Problem Of Play For Democratic Education? Abstraction, Realism, And Exploration In Learning Games. A Response To "The Challenges Of Gaming For Democratic Education: The Case Of Icivics", Benjamin DeVane 2017 University of Iowa

A Problem Of Play For Democratic Education? Abstraction, Realism, And Exploration In Learning Games. A Response To "The Challenges Of Gaming For Democratic Education: The Case Of Icivics", Benjamin Devane

Democracy and Education

In this review article, I argue that games are complementary, not self-supporting, learning tools for democratic education because they can: (a) offer simplified, but often not simple, outlines (later called “models”) of complex social systems that generate further inquiry; (b) provide practice spaces for exploring systems that do not have the often serious consequences of taking direct and immediate social, civic, and legal action; and (c) use rules to allow players to explore this aforementioned outline or model by making decisions and seeing an outcome. To make these arguments, I perform a close reading of three examples of participatory and ...


Digitally Segregated Understanding Technology Readiness In Preparation For Higher Education Success, Gloria D. Mullons 2017 National Louis University

Digitally Segregated Understanding Technology Readiness In Preparation For Higher Education Success, Gloria D. Mullons

Dissertations

The Digital Divide is the gulf between those that have access and use of technology and those that do not. The Digital Divide is a multilayered issue impacting low-income persons, low literacy persons, seniors, and persons with disabilities. The new emphasis is on whether people know how to use technological devices and the Internet for multiple purposes, especially to function and progress in daily society. This dissertation study focuses on technology readiness in preparation for higher education, specifically examining: 1) experiences students had prior to attending the HP3 program, 2) factors that influenced student preparedness for engaging in college-level technology ...


Awakening The Potential Of Positive Computing: A Transversal, Heliotropic Design Paradigm For Human Flourishing, Ryan Wynia 2017 University of Pennsylvania

Awakening The Potential Of Positive Computing: A Transversal, Heliotropic Design Paradigm For Human Flourishing, Ryan Wynia

Master of Applied Positive Psychology (MAPP) Capstone Projects

Positive Computing literature does not consider the complex implications stemming from the evidence of computing technologies’ harmful effects. Moreover, present approaches to integrating well-being science into the design of interactive systems are built on deficit-oriented models. In response, a transversal, social constructionist paradigm of Positive Computing sensitive to the social complex and views technology as a part ofcivilization as a living, human construction is explored as a means of advancing the Positive Computing domain. The work argues the well-being of civilization needs to be routinely re-secured through the development of a metacognitive, affirmative competency that recognizessocial systems as capable of ...


Data Protection In Nigeria: Addressing The Multifarious Challenges Of A Deficient Legal System, Roland Akindele 2017 Adeleke University, Ede

Data Protection In Nigeria: Addressing The Multifarious Challenges Of A Deficient Legal System, Roland Akindele

Journal of International Technology and Information Management

This paper provides an overview of the current state of privacy and data protection policies and regulations in Nigeria. The paper contends that the extant legal regime in Nigeria is patently inadequate to effectively protect individuals against abuse resulting from the processing of their personal data. The view is based on the critical analysis of the current legal regime in Nigeria vis-à-vis the review of some vital data privacy issues. The paper makes some recommendations for the reform of the law.


Table Of Contents Jitim Vol 26 Issue 4, 2017, 2017 California State University, San Bernardino

Table Of Contents Jitim Vol 26 Issue 4, 2017

Journal of International Technology and Information Management

Table of Contents


Digital Commons powered by bepress