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Social and Behavioral Sciences Commons

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2018

Science and Technology Studies

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Articles 1 - 30 of 455

Full-Text Articles in Social and Behavioral Sciences

Research Data Sharing: Practices And Attitudes Of Geophysicists, Carol Tenopir, Lisa Christian, Suzie Allard, Josh Borycz Dec 2018

Research Data Sharing: Practices And Attitudes Of Geophysicists, Carol Tenopir, Lisa Christian, Suzie Allard, Josh Borycz

DataONE Sociocultural and Usability & Assessment Working Groups

Open data policies have been introduced by governments, funders, and publishers over the past decade. Previous research showed a growing recognition by scientists of the benefits of data-sharing and reuse, but actual practices lag and are not always compliant with new regulations. The goal of this study is to investigate motives, attitudes, and data practices of the community of Earth and planetary geophysicists, a discipline believed to have accepting attitudes toward data sharing and reuse. A better understanding of the attitudes and current data-sharing practices of this scientific community could enable funders, publishers, data managers, and librarians to design systems …


Application Of Bradford’S Law Of Scattering On Research Publication In Astronomy & Astrophysics Of India, Satish Kumar, Senthilkumar R. Dec 2018

Application Of Bradford’S Law Of Scattering On Research Publication In Astronomy & Astrophysics Of India, Satish Kumar, Senthilkumar R.

Library Philosophy and Practice (e-journal)

The present study is focused on examining the application of Bradford’s law of scattering on research articles published in the field of Astronomy & Astrophysics by Indian scientist during 1988-2017. The bibliographic data was retrieved from Web of Science (WoS) bibliographic data base for different period of time. Total 18,877 journal’s article have been published by Indian scientist in the field of Astronomy & Astrophysics during 1988-2017 which was further retrieved and analyzed separately for different blocks of 10 years as well as for 30 years consolidated too. The core journal of the field was identified. The Bradford law of …


Research Incentive Programs For Closures Of Public And Private Grade Crossings, Julius Codjoe Dec 2018

Research Incentive Programs For Closures Of Public And Private Grade Crossings, Julius Codjoe

Publications

Vehicle-train crashes that occur at highway-rail crossings result in injuries, fatalities, and damage to equipment. In order to reduce the number of vehicle-train crashes, Federal Railroad Administration requires states which have challenges with crossing safety, including Louisiana, to develop a State Action Plan to improve grade crossing safety. Consequently, identification of specific solutions for improving safety at crossings was included in the 2015 Louisiana Transportation Plan as one of its objectives. This study seeks to identify and evaluate current and new incentive programs that encourage closure of at-grade railroad crossings to reduce the number of potential vehicle-train collision points, and …


A Story Of Data Won, Data Lost And Data Re-Found: The Realities Of Ecological Data Preservation, Alison Specht Nov 2018

A Story Of Data Won, Data Lost And Data Re-Found: The Realities Of Ecological Data Preservation, Alison Specht

DataONE Sociocultural and Usability & Assessment Working Groups

This paper discusses the process of retrieval and updating legacy data to allow on-line discovery and delivery. There are many pitfalls of institutional and non-institutional ecological data conservation over the long term. Interruptions to custodianship, old media, lost knowledge and the continuous evolution of species names makes resurrection of old data challenging. We caution against technological arrogance and emphasise the importance of international standards.

We use a case study of a compiled set of continent-wide vegetation survey data for which, although the analyses had been published, the raw data had not. In the original study, publications containing plot data collected …


Enhancing Your Intelligence Agency Information Resource Iq: Pt. 4: National Geospatial Intelligence Agency (Ngia), National Intelligence University (Niu), And National Reconnaissance Office (Nro), Bert Chapman Nov 2018

Enhancing Your Intelligence Agency Information Resource Iq: Pt. 4: National Geospatial Intelligence Agency (Ngia), National Intelligence University (Niu), And National Reconnaissance Office (Nro), Bert Chapman

Libraries Faculty and Staff Presentations

Webinar presentation on publicly accessible information resources produced by the U.S. National Geospatial Intelligence Agency (NGIA), National Intelligence University (NIU), and National Reconnaissance Office. Places significant emphasis on missions of these agencies, their historical accomplishments, coverage of their educational activity, and information on the technologies they have used and are currently using to fulfill their institutional objectives.


A Mixed Method Study Of Prospective Teachers' Epistemic Beliefs And Web Evaluation Strategies Concerning Hoax Websites, Jennifer Coccaro-Pons Oct 2018

A Mixed Method Study Of Prospective Teachers' Epistemic Beliefs And Web Evaluation Strategies Concerning Hoax Websites, Jennifer Coccaro-Pons

FIU Electronic Theses and Dissertations

Teachers need to be equipped with the tools necessary to evaluate content on the Internet and determine if it is a credible source, or a hoax website since they are expected to instruct and prepare students on how to evaluate the sites which is now a relevant phenomenon. The purpose of the mixed‑method study was to obtain an understanding of the web evaluation strategies of prospective teachers regarding the evaluation of hoax websites and how their epistemic beliefs may influence their evaluation. Another aspect of this study was to find out what outcomes resulted from providing guidance, or not to …


Building Iot Based Applications For Smart Cities: How Can Ontology Catalogs Help?, Amelia Gyrard, Antoine Zimmermann, Amit P. Sheth Oct 2018

Building Iot Based Applications For Smart Cities: How Can Ontology Catalogs Help?, Amelia Gyrard, Antoine Zimmermann, Amit P. Sheth

Kno.e.sis Publications

The Internet of Things (IoT) plays an ever-increasing role in enabling smart city applications. An ontology-based semantic approach can help improve interoperability between a variety of IoT-generated as well as complementary data needed to drive these applications. While multiple ontology catalogs exist, using them for IoT and smart city applications require significant amount of work. In this paper, we demonstrate how can ontology catalogs be more effectively used to design and develop smart city applications? We consider four ontology catalogs that are relevant for IoT and smart cities: 1) READY4SmartCities; 2) linked open vocabulary (LOV); 3) OpenSensingCity (OSC); and 4) …


Using Electronic Health Records To Characterize Prescription Patterns: Focus On Antidepressants In Nonpsychiatric Outpatient Settings, Joseph J. Deferio, Tomer T. Levin, Judith Cukor, Samprit Banerjee, Rozan Abdulrahman, Amit P. Sheth, Neel Mehta, Jyotishman Pathak Oct 2018

Using Electronic Health Records To Characterize Prescription Patterns: Focus On Antidepressants In Nonpsychiatric Outpatient Settings, Joseph J. Deferio, Tomer T. Levin, Judith Cukor, Samprit Banerjee, Rozan Abdulrahman, Amit P. Sheth, Neel Mehta, Jyotishman Pathak

Kno.e.sis Publications

Objective

To characterize nonpsychiatric prescription patterns of antidepressants according to drug labels and evidence assessments (on-label, evidence-based, and off-label) using structured outpatient electronic health record (EHR) data. Methods

A retrospective analysis was conducted using deidentified EHR data from an outpatient practice at a New York City-based academic medical center. Structured “medication–diagnosis” pairs for antidepressants from 35 325 patients between January 2010 and December 2015 were compared to the latest drug product labels and evidence assessments. Results

Of 140 929 antidepressant prescriptions prescribed by primary care providers (PCPs) and nonpsychiatry specialists, 69% were characterized as “on-label/evidence-based uses.” Depression diagnoses were associated …


Poster: Privacy-Preserving Boosting With Random Linear Classifiers, Sagar Sharma, Keke Chen Oct 2018

Poster: Privacy-Preserving Boosting With Random Linear Classifiers, Sagar Sharma, Keke Chen

Kno.e.sis Publications

We propose SecureBoost, a privacy-preserving predictive modeling framework, that allows service providers (SPs) to build powerful boosting models over encrypted or randomly masked user submit- ted data. SecureBoost uses random linear classifiers (RLCs) as the base classifiers. A Cryptographic Service Provider (CSP) manages keys and assists the SP’s processing to reduce the complexity of the protocol constructions. The SP learns only the base models (i.e., RLCs) and the CSP learns only the weights of the base models and a limited leakage function. This separated parameter holding avoids any party from abusing the final model or conducting model-based attacks. We evaluate …


Declining Versus Increasing Access To American Aviation Technology: Syria And Saudi Arabia In The 20th Century, Andrea L. Stanton Sep 2018

Declining Versus Increasing Access To American Aviation Technology: Syria And Saudi Arabia In The 20th Century, Andrea L. Stanton

Religious Studies: Faculty Scholarship

This article uses Syria and Saudi Arabia as contrasting examples of how different Arab states interacted with United States aviation technology, involving aviation technology companies, airline cor-porations, and government officials as they worked to develop civil and military aviation capabilities after World War II. It consid-ers the role played by airline companies like TWA, the impact of the shift from military to commercial aviation technology among companies like Boeing, and the fallout from regional political developments like the Iranian Revolution. These factors all placed varying constraints on the two countries’ ability to draw upon American sources for airplanes and other …


Assessing The Use Of Information And Communication Technology In Teaching And Learning In Secondary Schools, De-Graft Johnson Dei Aug 2018

Assessing The Use Of Information And Communication Technology In Teaching And Learning In Secondary Schools, De-Graft Johnson Dei

Library Philosophy and Practice (e-journal)

Information and Communication Technology (ICT) has become a force that has changed many aspects of the way we live and every aspect of human endeavor such as education, medicine, business, law and engineering. Education is a socially oriented activity and quality education has traditionally been associated with teachers having high degrees of personal and face-to-face contact with students. But with the world moving rapidly into digital media and information, the role of ICT in education is becoming more and more important. However, indicators on technology uptake and use in education in the secondary schools in Ghana are missing and most …


Creating Real-Time Dynamic Knowledge Graphs, Swati Padhee, Sarasi Lalithsena, Amit P. Sheth Jul 2018

Creating Real-Time Dynamic Knowledge Graphs, Swati Padhee, Sarasi Lalithsena, Amit P. Sheth

Kno.e.sis Publications

No abstract provided.


Measuring Public Utilization Perception Potential Of Unmanned Aircraft Systems, Julius Keller, Daniel Kwasi Adjekum, Bortiorkor Nii Tsui Alabi, Brian Kozak Jul 2018

Measuring Public Utilization Perception Potential Of Unmanned Aircraft Systems, Julius Keller, Daniel Kwasi Adjekum, Bortiorkor Nii Tsui Alabi, Brian Kozak

Aviation Faculty Publications

The integration of Unmanned Aircraft Systems (UAS) into the National Air Space (NAS) in recent times has been met by mixed public responses. The paper establishes four constructs each of which encapsulates multiple backgrounds and concerns of the stakeholders: functional knowledge, utilization trust, operational integration support, and safety risk-benefits. The paper hypothesizes that these constructs can serve as underlying components for a research instrument namely, the Public Utilization Perception Potential (PUPP) which can be used to assess the opinions of the public on UAS integration into NAS. Responses from the public on items in a beta-tested survey instrument were analyzed …


Using Mhealth To Increase Treatment Utilization Among Recently Incarcerated Homeless Adults (Link2care): Protocol For A Randomized Controlled Trial, Jennifer M. Reingle Gonzalez, Michael S. Businelle, Darla Kendzor, Michele Staton, Carol S. North, Michael Swartz Jun 2018

Using Mhealth To Increase Treatment Utilization Among Recently Incarcerated Homeless Adults (Link2care): Protocol For A Randomized Controlled Trial, Jennifer M. Reingle Gonzalez, Michael S. Businelle, Darla Kendzor, Michele Staton, Carol S. North, Michael Swartz

Behavioral Science Faculty Publications

Background: There is a significant revolving door of incarceration among homeless adults. Homeless adults who receive professional coordination of individualized care (ie, case management) during the period following their release from jail experience fewer mental health and substance use problems, are more likely to obtain stable housing, and are less likely to be reincarcerated. This is because case managers work to meet the various needs of their clients by helping them to overcome barriers to needed services (eg, food, clothing, housing, job training, substance abuse and mental health treatment, medical care, medication, social support, proof of identification, and legal aid). …


Going Beyond The "T" In "Ctc": Social Practices As Care In Community Technology Centers, David Nemer Jun 2018

Going Beyond The "T" In "Ctc": Social Practices As Care In Community Technology Centers, David Nemer

Information Science Faculty Publications

Community technology center (CTC) is a term usually associated with facilities that provide free or affordable computer and internet access, and sometimes training, to people in underserved communities. Despite the large number of studies done on CTCs, the literature has focused primarily on the use of ICTs as the main, if not the only, activity in these centers. When it comes to addressing social concerns, the literature has often seen them as an outcome of ICT use. It does not highlight CTCs as an inherent and important social space that helps to tackle social issues. Thus, in this study, I …


Augmented Personalized Health: Using Semantically Integrated Multimodal Data For Patient Empowered Health Management Strategies, Amit P. Sheth, Hong Y. Yip, Utkarshani Jaimini, Dipesh Kadariya, Vaikunth Sridharan, R. Venkataramanan, Tanvi Banerjee, Krishnaprasad Thirunarayan, Maninder Kalra Jun 2018

Augmented Personalized Health: Using Semantically Integrated Multimodal Data For Patient Empowered Health Management Strategies, Amit P. Sheth, Hong Y. Yip, Utkarshani Jaimini, Dipesh Kadariya, Vaikunth Sridharan, R. Venkataramanan, Tanvi Banerjee, Krishnaprasad Thirunarayan, Maninder Kalra

Kno.e.sis Publications

Healthcare as we know it is in the process of going through a massive change from:

1. Episodic to continuous

2. Disease-focused to wellness and quality of life focused

3. Clinic-centric to anywhere a patient is

4. Clinician controlled to patient empowered

5. Being driven by limited data to 360-degree, multimodal personal-public-population physical-cyber-social big data-driven URL: https://mhealth.md2k.org/2018-tech-showcase-home


Incorporating Diegetic Elements To Increase Engagement In Games For Engineering Education, Katherine Smith, Yuzhong Shen, Anthony W. Dean Jun 2018

Incorporating Diegetic Elements To Increase Engagement In Games For Engineering Education, Katherine Smith, Yuzhong Shen, Anthony W. Dean

VMASC Publications

One of the difficulties in developing educational games is maintaining player engagement. This engagement is critical for games to provide effective learning experiences. One way to increase engagement in games is to limit interruptions during game play. In educational games, this can be accomplished by incorporating learning or problem-solving elements diegetically. Diegetic elements are those that are part of the game scene. With this in mind, a series of games for Science, Technology, Engineering, and Mathematics (STEM) education has been developed focusing on content in courses that are prerequisites to the engineering curriculum. These games cover topics in pre-calculus, calculus, …


Designing Smart Applications Using Ar (Augmented Reality), Kimberly A. De La Santa May 2018

Designing Smart Applications Using Ar (Augmented Reality), Kimberly A. De La Santa

Publications and Research

Augmented Reality is rapidly developing in popularity because it brings elements of the virtual world, into our real world. Augmented Reality (AR) is a variation of Virtual Reality (VR). VR technologies immerses a user inside an imaginary environment. While immersed, the user cannot see the real world around them. In contrast, AR allows the user to see the real world, with virtual objects and information intertwined. Therefore, AR supplements reality and enhances the things we see, hear, and feel. This research project will implement a Web page that gives the user the opportunity to experiment with AR.


The Influence Of Parental Control And Parent-Child Relational Qualities On Adolescent Internet Addiction: A 3-Year Longitudinal Study In Hong Kong, Daniel T. L. Shek, Xiaoqin Zhu, Cecilia M. S. Ma May 2018

The Influence Of Parental Control And Parent-Child Relational Qualities On Adolescent Internet Addiction: A 3-Year Longitudinal Study In Hong Kong, Daniel T. L. Shek, Xiaoqin Zhu, Cecilia M. S. Ma

Pediatrics Faculty Publications

This study investigated how parental behavioral control, parental psychological control, and parent-child relational qualities predicted the initial level and rate of change in adolescent internet addiction (IA) across the junior high school years. The study also investigated the concurrent and longitudinal effects of different parenting factors on adolescent IA. Starting from the 2009/2010 academic year, 3,328 Grade 7 students (Mage = 12.59 ± 0.74 years) from 28 randomly selected secondary schools in Hong Kong responded on a yearly basis to a questionnaire measuring multiple constructs including socio-demographic characteristics, perceived parenting characteristics, and IA. Individual growth curve (IGC) analyses …


Cultural Competence Amongst Undergraduate Healthcare Students (Spring 2018), Mary Lee, Paulina Szymanska, Vivian Liang, Tiffany Yip, Zoya Vinokur May 2018

Cultural Competence Amongst Undergraduate Healthcare Students (Spring 2018), Mary Lee, Paulina Szymanska, Vivian Liang, Tiffany Yip, Zoya Vinokur

Publications and Research

In response to the growing issue of health care disparities amongst the diverse populations in the United States, more medical programs are including cultural competency education as part of their undergraduate curriculum. As students in the healthcare field, we want to be able to understand and provide care that best serves the needs of a culturally diverse patient body. This study aims to look at whether healthcare and non-healthcare students at City Tech are able to clearly define and understand the concepts of cultural competence and implicit bias in their healthcare encounters.


Sensor Technologies For Intelligent Transportation Systems, Juan Guerrero-Ibáñez, Sherali Zeadally, Juan Contreras-Castillo Apr 2018

Sensor Technologies For Intelligent Transportation Systems, Juan Guerrero-Ibáñez, Sherali Zeadally, Juan Contreras-Castillo

Information Science Faculty Publications

Modern society faces serious problems with transportation systems, including but not limited to traffic congestion, safety, and pollution. Information communication technologies have gained increasing attention and importance in modern transportation systems. Automotive manufacturers are developing in-vehicle sensors and their applications in different areas including safety, traffic management, and infotainment. Government institutions are implementing roadside infrastructures such as cameras and sensors to collect data about environmental and traffic conditions. By seamlessly integrating vehicles and sensing devices, their sensing and communication capabilities can be leveraged to achieve smart and intelligent transportation systems. We discuss how sensor technology can be integrated with the …


Evaluating Disparities In The U.S. Technology Transfer Ecosystem To Improve Bench To Business Translation, James Weis, Ashvin Bashyam, Gregory J. Ekchian, Kathryn Paisner, Nathan L. Vanderford Mar 2018

Evaluating Disparities In The U.S. Technology Transfer Ecosystem To Improve Bench To Business Translation, James Weis, Ashvin Bashyam, Gregory J. Ekchian, Kathryn Paisner, Nathan L. Vanderford

Markey Cancer Center Faculty Publications

Background: A large number of highly impactful technologies originated from academic research, and the transfer of inventions from academic institutions to private industry is a major driver of economic growth, and a catalyst for further discovery. However, there are significant inefficiencies in academic technology transfer. In this work, we conducted a data-driven assessment of translational activity across United States (U.S.) institutions to better understand how effective universities are in facilitating the transfer of new technologies into the marketplace. From this analysis, we provide recommendations to guide technology transfer policy making at both the university and national level.

Methods: Using data …


Towards Practical Privacy-Preserving Analytics For Iot And Cloud Based Healthcare Systems, Sagar Sharma, Keke Chen, Amit P. Sheth Mar 2018

Towards Practical Privacy-Preserving Analytics For Iot And Cloud Based Healthcare Systems, Sagar Sharma, Keke Chen, Amit P. Sheth

Kno.e.sis Publications

Modern healthcare systems now rely on advanced computing methods and technologies, such as IoT devices and clouds, to collect and analyze personal health data at unprecedented scale and depth. Patients, doctors, healthcare providers, and researchers depend on analytical models derived from such data sources to remotely monitor patients, early-diagnose diseases, and find personalized treatments and medications. However, without appropriate privacy protection, conducting data analytics becomes a source of privacy nightmare. In this paper, we present the research challenges in developing practical privacy-preserving analytics in healthcare information systems. The study is based on kHealth - a personalized digital healthcare information system …


What Drives Consumers In China To Buy Clothing Online? Application Of The Technology Acceptance Model, Zhenqian Wei, Min-Young Lee, Hong Shen Feb 2018

What Drives Consumers In China To Buy Clothing Online? Application Of The Technology Acceptance Model, Zhenqian Wei, Min-Young Lee, Hong Shen

Retailing and Tourism Management Faculty Publications

An enormous number of Internet users have made China a profitable e-commerce marketplace, and clothing is one of the most frequently purchased items. This study explores the predictors of consumers’ motivation to buy clothing online in China by extending the technology acceptance model. Data were collected via an online questionnaire, resulting in 504 returned responses. The results indicate that perceived usefulness has a significant effect on consumers’ intention to buy clothing online; however, no direct relationship between perceived ease of use and buying intention was found. Furthermore, perceived convenience, perceived money saving, and perceived time-saving can explain why consumers perceive …


Hplc-Cuprac Post-Column Derivatization Method For The Determination Of Antioxidants: A Performance Comparison Between Porous Silica And Core-Shell Column Packing, Syed A. Haque, Socrates Jose P. Cañete Jan 2018

Hplc-Cuprac Post-Column Derivatization Method For The Determination Of Antioxidants: A Performance Comparison Between Porous Silica And Core-Shell Column Packing, Syed A. Haque, Socrates Jose P. Cañete

Kentucky Tobacco Research and Development Center Faculty Publications

Background: An HPLC method employing a post-column derivatization strategy using the cupric reducing antioxidant capacity reagent (CUPRAC reagent) for the determining antioxidants in plant-based materials leverages the separation capability of regular HPLC approaches while allowing for detection specificity for antioxidants.

Methods: Three different column types, namely core-shell and porous silica including two chemically different core-shell materials (namely phenyl-hexyl and C18), were evaluated to assess potential improvements that could be attained by changing from a porous silica matrix to a core-shell matrix. Tea extracts were used as sample matrices for the evaluation specifically looking at catechin and epigallocatechin gallate (EGCG).

Results: …


Access To Technology And Student Academic Achievement: Empirical Evidence From Nepal, Palista Kharel Jan 2018

Access To Technology And Student Academic Achievement: Empirical Evidence From Nepal, Palista Kharel

School of Public Policy Capstones

My research explores the linkage between access to technology and student academic achievement in Nepal. I measure access to technology using four proxies: availability of electricity, radio, TV and computer at home. I measure academic achievement using student test scores in the Grade 10 national level examinations.

My results indicate that students with access to electricity, radio, TV and computer at home, have higher average test scores overall. Particularly, access to a computer has the largest positive effect on a student’s academic achievement. Simple OLS regression results suggest that those with access to a computer score 64 points higher than …


Compressive Behaviour Of Square Fibre-Reinforced Polymer-Concrete-Steel Hybrid Multi-Tube Concrete Columns, Chun Wa Chan, Tao Yu, Shi Shun Zhang Jan 2018

Compressive Behaviour Of Square Fibre-Reinforced Polymer-Concrete-Steel Hybrid Multi-Tube Concrete Columns, Chun Wa Chan, Tao Yu, Shi Shun Zhang

Faculty of Engineering and Information Sciences - Papers: Part B

Fibre-reinforced polymer-concrete-steel hybrid multi-tube concrete columns are a new form of columns recently proposed at the University of Wollongong. An multi-tube concrete column consists of an external fibre-reinforced polymer tube and a number of circular internal steel tubes, with the space inside all the tubes filled with concrete. This article presents the first ever experimental study on square multi-tube concrete columns. The experimental program included a total of 14 stub column specimens tested under axial compression, with the test variables being the thickness of the external fibre-reinforced polymer tube, and the dimensions and configuration of the internal steel tubes. The …


Common Carriage’S Domain, Christopher S. Yoo Jan 2018

Common Carriage’S Domain, Christopher S. Yoo

All Faculty Scholarship

The judicial decision invalidating the Federal Communications Commission's first Open Internet Order has led advocates to embrace common carriage as the legal basis for network neutrality. In so doing, network neutrality proponents have overlooked the academic literature on common carriage as well as lessons from its implementation history. This Essay distills these learnings into five factors that play a key role in promoting common carriage's success: (1) commodity products, (2) simple interfaces, (3) stability and uniformity in the transmission technology, (4) full deployment of the transmission network, and (5) stable demand and market shares. Applying this framework to the Internet …


Influence Of Steel Fibres On The Behaviour Of Rpc Circular Columns Under Different Loading Conditions, Ahmed Al-Tikrite, Muhammad N. S Hadi Jan 2018

Influence Of Steel Fibres On The Behaviour Of Rpc Circular Columns Under Different Loading Conditions, Ahmed Al-Tikrite, Muhammad N. S Hadi

Faculty of Engineering and Information Sciences - Papers: Part B

An experimental program was conducted to investigate the effect of inclusion of steel fibres on the behaviour of Reactive Powder Concrete (RPC) columns. Three different types of steel fibre were used: micro straight steel fibre (MF), macro deformed steel fibre (DF) and waste steel fibre (WF) recovered from discarded tyres. In addition, a hybridization of steel fibres was made up to produce waste-industrial hybridization (WHF) (MF, DF and WF). Twenty reinforced RPC column specimens were prepared and tested under axial concentric, eccentric and flexural loading. Results of testing demonstrated that the ultimate axial load and the corresponding axial deformation increased …


Mechanical Properties And Microstructure Of A Ti-6al-4v Alloy Subjected To Cold Rolling, Asymmetric Rolling And Asymmetric Cryorolling, Hai Liang Yu, Ming Yan, Jintao Li, Ajit R. Godbole, Cheng Lu, Anh Kiet Tieu, Hui Jun Li, Charlie Kong Jan 2018

Mechanical Properties And Microstructure Of A Ti-6al-4v Alloy Subjected To Cold Rolling, Asymmetric Rolling And Asymmetric Cryorolling, Hai Liang Yu, Ming Yan, Jintao Li, Ajit R. Godbole, Cheng Lu, Anh Kiet Tieu, Hui Jun Li, Charlie Kong

Faculty of Engineering and Information Sciences - Papers: Part B

The mechanical properties of the Ti-6Al-4V alloy are significantly determined by the process used for manufacture. In this study, the mechanical properties of the Ti-6Al-4V alloy manufactured using cold rolling, asymmetric rolling and asymmetric cryorolling were characterized by subjecting it to the tensile test and the microhardness test. The evolution in the microstructure was studied using scanning electron microscopy, transmission electron microscopy as well as energy dispersive X-ray spectrometry. Results show that the Ti-6Al-4V alloy sheets subjected to asymmetrical cryorolling with low rolling speed ratio between the upper and lower rolls have the highest tensile strength and microhardness. The tensile …