Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Social and Behavioral Sciences (4295)
- Library and Information Science (2649)
- Arts and Humanities (1726)
- Engineering (1393)
- Physical Sciences and Mathematics (1212)
-
- Education (1121)
- Computer Sciences (1011)
- Comparative Literature (1005)
- Communication (854)
- Critical and Cultural Studies (594)
- Civil and Environmental Engineering (511)
- Rhetoric and Composition (425)
- Feminist, Gender, and Sexuality Studies (347)
- American Studies (340)
- Business (333)
- Film and Media Studies (333)
- Civil Engineering (331)
- Reading and Language (329)
- European Languages and Societies (313)
- Psychology (313)
- Other Arts and Humanities (306)
- Life Sciences (297)
- Theatre and Performance Studies (284)
- Medicine and Health Sciences (281)
- Other Film and Media Studies (275)
- Television (264)
- Political Science (228)
- Sociology (224)
- Higher Education (192)
- English Language and Literature (186)
- Keyword
-
- Comparative literature (348)
- comparative literature (341)
- Comparative cultural studies (242)
- Applied sciences (238)
- comparative cultural studies (238)
-
- Education (140)
- Information literacy (108)
- Social sciences (108)
- Cultural studies (93)
- cultural studies (91)
- Media studies (82)
- media studies (81)
- Literary theory (75)
- literary theory (74)
- Problem-based learning (71)
- Communication and the arts (62)
- Sustainability (56)
- Assessment (55)
- Collaboration (54)
- Health and environmental sciences (52)
- Comparative humanities (50)
- Intercultural studies (50)
- comparative humanities (50)
- intercultural studies (50)
- Biological sciences (47)
- Higher education (46)
- Engineering (45)
- Psychology (45)
- Culture theory (43)
- culture theory (43)
- Publication Year
- Publication
-
- Against the Grain (1424)
- CLCWeb: Comparative Literature and Culture (1007)
- Department of Computer Science Technical Reports (858)
- Proceedings of the IATUL Conferences (854)
- Open Access Dissertations (778)
-
- Open Access Theses (690)
- Purdue Road School (661)
- The Writing Center Journal (576)
- Charleston Library Conference (545)
- JTRP Technical Reports (322)
- Department of Electrical and Computer Engineering Technical Reports (312)
- CIB Conferences (255)
- International Refrigeration and Air Conditioning Conference (233)
- Education and Culture (210)
- Global Business Languages (204)
- International Compressor Engineering Conference (203)
- Libraries Faculty and Staff Scholarship and Research (187)
- Interdisciplinary Journal of Problem-Based Learning (153)
- Department of Physics and Astronomy Faculty Publications (152)
- Purdue Journal of Service-Learning and International Engagement (146)
- The Journal of Purdue Undergraduate Research (146)
- Dismantling Bias Conference Series (145)
- Journal of Pre-College Engineering Education Research (J-PEER) (118)
- Artl@s Bulletin (104)
- Journal of Southeast Asian American Education and Advancement (103)
- International High Performance Buildings Conference (102)
- Libraries Faculty and Staff Presentations (84)
- Journal of Aviation Technology and Engineering (77)
- Journal of Rhetoric, Professional Communication, and Globalization (75)
- People and Animals: The International Journal of Research and Practice (68)
- Publication Type
Articles 2461 - 2490 of 13659
Full-Text Articles in Entire DC Network
“She’S Me”: An Exploration Of Pet Ownership From The Perspective Of People Who Are Homeless, Lana Parker, Leonie Boland, Alison Warren
“She’S Me”: An Exploration Of Pet Ownership From The Perspective Of People Who Are Homeless, Lana Parker, Leonie Boland, Alison Warren
People and Animals: The International Journal of Research and Practice
For many people who experience homelessness, having a pet is an important part of their lives. Although the benefit and meaning of pet ownership has been well recognized in the literature, few studies have explored its meaning from the perspectives of individuals who are homeless. This qualitative study explored the meaning of pet ownership from the perspectives of three men who previously or currently owned a pet while experiencing homelessness. In line with the chosen methodology, interpretative phenomenological analysis (IPA), semi-structured, in- depth interviews explored the phenomena of pet ownership. This paper is based on one of three themes from …
Elementary Teachers’ Mental Images Of Engineers At Work, Rebekah Hammack, Juliana Utley, Toni Ivey, Karen High
Elementary Teachers’ Mental Images Of Engineers At Work, Rebekah Hammack, Juliana Utley, Toni Ivey, Karen High
Journal of Pre-College Engineering Education Research (J-PEER)
The purpose of the current study was to determine the impacts of a multiple-day engineering-focused professional development program on elementary teachers’ perceptions of the work of engineers and their use of mathematics and science. Data were collected in the form of drawings of engineers prior to and immediately after the professional development program as well as an open-ended exit survey at the end of the program. Participants’ drawings were scored in the following areas: use of mathematics, use of science, and work of an engineer. Wilcoxon signed-rank tests revealed that the only significant change between measures was in ‘‘work of …
A Statistical Impulse Response Model Based On Empirical Characterization Of Wireless Underground Channel, Abdul Salam, Mehmet C. Vuran, Suat Irmak
A Statistical Impulse Response Model Based On Empirical Characterization Of Wireless Underground Channel, Abdul Salam, Mehmet C. Vuran, Suat Irmak
Computer Information Technology Faculty Publications
Wireless underground sensor networks (WUSNs) are becoming ubiquitous in many areas. The design of robust systems requires extensive understanding of the underground (UG) channel characteristics. In this paper, an UG channel impulse response is modeled and validated via extensive experiments in indoor and field testbed settings. The three distinct types of soils are selected with sand and clay contents ranging from $13\%$ to $86\%$ and $3\%$ to $32\%$, respectively. The impacts of changes in soil texture and soil moisture are investigated with more than $1,200$ measurements in a novel UG testbed that allows flexibility in soil moisture control. Moreover, the …
Raman Spectra-Based Deep Learning: A Tool To Identify Microbial Contamination, Murali K. Maruthamuthu, Amir Hossein Raffiee, Denilson Mendes De Oliveira, Arezoo M. Ardekani, Mohit S. Verma
Raman Spectra-Based Deep Learning: A Tool To Identify Microbial Contamination, Murali K. Maruthamuthu, Amir Hossein Raffiee, Denilson Mendes De Oliveira, Arezoo M. Ardekani, Mohit S. Verma
Purdue University Libraries Open Access Publishing Fund
Deep learning has the potential to enhance the output of in-line, on-line, and at-line instrumentation used for process analytical technology in the pharmaceutical industry. Here, we used Raman spectroscopy-based deep learning strategies to develop a tool for detecting microbial contamination. We built a Raman dataset for microorganisms that are common contaminants in the pharmaceutical industry for Chinese Hamster Ovary (CHO) cells, which are often used in the production of biologics. Using a convolution neural network (CNN), we classified the different samples comprising individual microbes and microbes mixed with CHO cells with an accuracy of 95%–100%. The set of 12 microbes …
Book Review: Yang, K. (2017). The Making Of Hmong America: Forty Years After The Secret War. Lexington Books., Thong Vang
Journal of Southeast Asian American Education and Advancement
The Making of Hmong America is part of a series of books and articles published by Dr. Kou Yang, highlighting the Hmong’s involuntary migration from Asia to the rest of the world, their past status and progress of the Hmong diaspora in the United States. The book expands upon a previous text that Yang had written entitled "40 Years After the Vietnam War: Celebrating the Contributions of Indochinese Refugees to the United States."
Laptop Sticker Poems: Inventing Personas In Poetry, Sydney Luk
Laptop Sticker Poems: Inventing Personas In Poetry, Sydney Luk
The Journal of Purdue Undergraduate Research
No abstract provided.
The Broader Autism Phenotype In Early Childhood: Responding To Joint Attention And Language Development, Loran Pelecky
The Broader Autism Phenotype In Early Childhood: Responding To Joint Attention And Language Development, Loran Pelecky
The Journal of Purdue Undergraduate Research
No abstract provided.
Collaborative Needs Of Speech-Language Pathologists And Special Education Teachers In Public Schools, Hannah Dulski
Collaborative Needs Of Speech-Language Pathologists And Special Education Teachers In Public Schools, Hannah Dulski
The Journal of Purdue Undergraduate Research
No abstract provided.
High Wind Alerts: A System Created With Observations From The X-Band Teaching And Research Radar, Lauren Warner
High Wind Alerts: A System Created With Observations From The X-Band Teaching And Research Radar, Lauren Warner
The Journal of Purdue Undergraduate Research
Following the August 13, 2011, Indiana State Fair stage collapse tragedy, caused by a wind gust from an approaching thunderstorm, Purdue University enforced a wind speed restriction of 30 mph (13 m s-1) for tents at outdoor events. During these events, volunteers stand outside with handheld anemometers, measuring and reporting when the wind speeds exceed this limit. In this study, we report testing of a new system to automate high-wind alerts based on observations from a Doppler radar, the X-band Teaching and Research Radar (XTRRA), near Purdue’s campus. XTRRA scans over campus at low elevations approximately every 5 minutes. Using …
Human Factors Analysis And Classification System (Hfacs): As Applied To Asiana Airlines Flight 214, Alex Small
Human Factors Analysis And Classification System (Hfacs): As Applied To Asiana Airlines Flight 214, Alex Small
The Journal of Purdue Undergraduate Research
The Human Factors Analysis and Classification System (HFACS) is a safety tool that aids in the identification and analysis of organizational factors that contribute to aircraft accidents. By using the HFACS model, safety investigators can better understand the existing conditions that contribute to accidents, which then allows for the development and implementation of safety programs to prevent these conditions. In this study, the HFACS framework was utilized to identify the human factors that contributed to the Asiana Airlines flight 214 accident that occurred on July 6, 2013. The results of this study indicate that inadequate pilot training, lack of upper-level …
Comparison Of Machine Learning Models: Gesture Recognition Using A Multimodal Wrist Orthosis For Tetraplegics, Charlie Martin
Comparison Of Machine Learning Models: Gesture Recognition Using A Multimodal Wrist Orthosis For Tetraplegics, Charlie Martin
The Journal of Purdue Undergraduate Research
Many tetraplegics must wear wrist braces to support paralyzed wrists and hands. However, current wrist orthoses have limited functionality to assist a person’s ability to perform typical activities of daily living other than a small pocket to hold utensils. To enhance the functionality of wrist orthoses, gesture recognition technology can be applied to control mechatronic tools attached to a novel fabricated wrist brace. Gesture recognition is a growing technology for providing touchless human-computer interaction that can be particularly useful for tetraplegics with limited upper-extremity mobility. In this study, three gesture recognition models were compared—two dynamic time-warping models and a hidden …
Hot And Cold: Quantifying The Variation Of Sentiment In Supreme Court Confirmation Hearings, Noah Alderton
Hot And Cold: Quantifying The Variation Of Sentiment In Supreme Court Confirmation Hearings, Noah Alderton
The Journal of Purdue Undergraduate Research
Since the appointment of John M. Harlan II in 1955, every Supreme Court nominee has testified in a Senate Judiciary Committee hearing. These hearings provide a fertile ground for senator ideologies, partisanship, and political forces to be on full display. However, little research has systematically analyzed confirmation hearings for Supreme Court nominees. In this paper, quantitative sentiment analysis is used on the transcripts of Supreme Court confirmation hearings between 1969 and 2018. By leveraging sentiment analysis, the attitudes of each of the senators during the hearings can be measured. Investigating the correlative impact that variables at the senator, institution, and …
Navigating In Numerous Video Data: User Interface Design For An On-Camera Video Analytics Engine, Sabriya Maryam Alam
Navigating In Numerous Video Data: User Interface Design For An On-Camera Video Analytics Engine, Sabriya Maryam Alam
The Journal of Purdue Undergraduate Research
Video analytics powered by artificial intelligence shows high promise in making our society smarter. Harnessing large amounts of video data, however, requires the development of processing systems demonstrating high performance and high efficiency. To this end, this work has contributed to a video analytics system powered by artificial intelligence for object detection and recognition. Rather than streaming all the video frames to the cloud, the system analyzes images on-camera and only returns those of interest to the cloud. This edge analytics research-grade software is available, but it lacks a simple web interface for general use by scientists, engineers, and other …
Out Of The Box: Cross-Cultural Research For Sustainable Agriculture In Arequipa, Peru, Ally Jacoby
Out Of The Box: Cross-Cultural Research For Sustainable Agriculture In Arequipa, Peru, Ally Jacoby
The Journal of Purdue Undergraduate Research
A student researcher participates in an immersive, cross-cultural research internship focused on soil health in Arequipa’s desert agricultural system—particularly, the accumulation of heavy metals in vineyards.
Alumni Spotlight: Marisa Henry
Alumni Spotlight: Marisa Henry
The Journal of Purdue Undergraduate Research
Marisa Henry published an article in volume 5 (2015) of the Journal of Purdue Undergraduate Research during her time spent completing her baccalaureate degree.
Interview: Beth Mcneil, Ethan Edwards
Interview: Beth Mcneil, Ethan Edwards
The Journal of Purdue Undergraduate Research
Beth McNeil is the Dean of Libraries and Esther Ellis Norton Professor of Library Science at Purdue University.
A First Look At Forensic Analysis Of Sailfishos, Krassimir Tzvetanov, Umit Karabiyik
A First Look At Forensic Analysis Of Sailfishos, Krassimir Tzvetanov, Umit Karabiyik
Computer Information Technology Faculty Publications
SailfishOS is a Linux kernel-based embedded device operation system, mostly deployed on cell phones. Currently, there is no sufficient research in this space, and at the same time, this operating system is gaining popularity, so it is likely for investigators to encounter it in the field. This paper focuses on mapping the digital artifacts pertinent to an investigation, which can be found on the filesystem of a phone running SailfishOS 3.2. Currently, there is no other known publicly available research and no commercially available solutions for the acquisition and analysis of this platform. This is a major gap, as the …
Strategies For Embedding Population Health Concepts Into Nursing Education, Kasey Jordan, Saria Lofton, Elizabeth Richards
Strategies For Embedding Population Health Concepts Into Nursing Education, Kasey Jordan, Saria Lofton, Elizabeth Richards
School of Nursing Faculty Publications
Advances in community and public health are needed to address contemporary health needs, particularly poor health outcomes related to the social determinants of health and inequity. Nurses are ideally placed to promote meaningful advances in community and public health, collectively referred to as population health. Nurse educators can promote a deeper understanding of core population health concepts by threading these concepts throughout the academic nursing curricula in addition to standalone population or public health courses. Strategies for incorporating population health concepts in a variety of courses can be conceptualized through the themes emphasizing context, honoring community voices, cultivating community connection, …
Underground Wireless Channel Bandwidth And Capacity, Abdul Salam, Usman Raza
Underground Wireless Channel Bandwidth And Capacity, Abdul Salam, Usman Raza
Computer Information Technology Faculty Publications
The UG channel bandwidth and capacity are vital parameters in wireless underground communication system design. In this chapter, a comprehensive analysis of the wireless underground channel capacity is presented. The impact of soil on return loss, bandwidth, and path loss is discussed. The results of underground multi-carrier modulation capacity are also outlined. Moreover, the single user capacity and multi-carrier capacity are also introduced with an in-depth treatment of soil texture, soil moisture, and distance effects on channel capacity. Finally, the chapter is concluded with a discussion of challenges and open research issues.
Modulation Schemes And Connectivity In Wireless Underground Channel, Abdul Salam, Usman Raza
Modulation Schemes And Connectivity In Wireless Underground Channel, Abdul Salam, Usman Raza
Computer Information Technology Faculty Publications
In this chapter, a thorough treatment of the modulation schemes for UG Wireless is presented. The effects of soil texture and water content on the capacity of multi-carrier modulation in WUC are discussed. The multi-carrier capacity model results are analyzed. Moreover, the underground MIMO design for underground communications is explained thoroughly. An analysis of medium access in wireless underground is done as well. Furthermore, the soil properties are considered for cross-layer communications of UG wireless. The performance analysis of traditional modulation schemes is also considered. The soil moisture-based modulation approach is also explored in this chapter. The connectivity and diversity …
Underground Phased Arrays And Beamforming Applications, Abdul Salam, Usman Raza
Underground Phased Arrays And Beamforming Applications, Abdul Salam, Usman Raza
Computer Information Technology Faculty Publications
This chapter presents a framework for adaptive beamforming in underground communication. The wireless propagation is thoroughly analyzed to develop a model using the soil moisture as an input parameter to provide feedback mechanism while enhancing the system performance. The working of array element in the soil is analyzed. Moreover, the effect of soil texture and soil moisture on the resonant frequency and return loss is studied in detail. The wave refraction from the soil–air interface highly degrades the performance of the system. Furthermore, to beam steering is done to achieve high gain for lateral component improving the UG communication. The …
Current Advances In Internet Of Underground Things, Abdul Salam, Usman Raza
Current Advances In Internet Of Underground Things, Abdul Salam, Usman Raza
Computer Information Technology Faculty Publications
The latest developments in Internet of Underground Things are covered in this chapter. First, the IOUT Architecture is discussed followed by the explanation of the challenges being faced in this paradigm. Moreover, a comprehensive coverage of the different IOUT components is presented that includes communications, sensing, and system integration with the cloud. An in-depth coverage of the applications of the IOUT in various disciplines is also surveyed. These applications include areas such as decision agriculture, pipeline monitoring, border control, and oil wells.
Electromagnetic Characteristics Of The Soil, Abdul Salam, Usman Raza
Electromagnetic Characteristics Of The Soil, Abdul Salam, Usman Raza
Computer Information Technology Faculty Publications
The electromagnetic characteristics of the soil are discussed in this chapter. The characteristics of porous bedrock, soil medium, and impacts of rain attenuations are also presented. The models of dielectric soil properties are studied with a rigorous focus on the constitutive parameters of subsurface soil medium. Moreover, the permittivity and wavenumber in soil are explained. In addition, the frequency-dependent dielectric properties such as dispersion in soil, absorption characteristic, and penetration depth versus frequency are reviewed. Furthermore, the effective permittivity of soil–water mixture for through-the soil-propagation mechanism is analyzed thoroughly.
Signals In The Soil: Subsurface Sensing, Abdul Salam, Usman Raza
Signals In The Soil: Subsurface Sensing, Abdul Salam, Usman Raza
Computer Information Technology Faculty Publications
In this chapter, novel subsurface soil sensing approaches are presented for monitoring and real-time decision support system applications. The methods, materials, and operational feasibility aspects of soil sensors are explored. The soil sensing techniques covered in this chapter include aerial sensing, in-situ, proximal sensing, and remote sensing. The underlying mechanism used for sensing is also examined as well. The sensor selection and calibration techniques are described in detail. The chapter concludes with discussion of soil sensing challenges.
Soil Moisture And Permittivity Estimation, Abdul Salam, Usman Raza
Soil Moisture And Permittivity Estimation, Abdul Salam, Usman Raza
Computer Information Technology Faculty Publications
The soil moisture and permittivity estimation is vital for the success of the variable rate approaches in the field of the decision agriculture. In this chapter, the development of a novel permittivity estimation and soil moisture sensing approach is presented. The empirical setup and experimental methodology for the power delay measurements used in model are introduced. Moreover, the performance analysis is explained that includes the model validation and error analysis. The transfer functions are reported as well for soil moisture and permittivity estimation. Furthermore, the potential applications of the developed approach in different disciplines are also examined.
Autonomous Irrigation Management In Decision Agriculture, Abdul Salam, Usman Raza
Autonomous Irrigation Management In Decision Agriculture, Abdul Salam, Usman Raza
Computer Information Technology Faculty Publications
In this chapter, the important application of autonomous irrigation management in the field decision agriculture is discussed. The different types of sensor-guided irrigation systems are presented that includes center pivot systems and drip irrigation systems. Their sensing and actuator components are with detailed focus on real-time decision-making and integration to the cloud. This chapter also presents irrigation control systems which takes, as an input, soil moisture and temperature from IOUT and weather data from Internet and communicate with center pivot based irrigation systems. Moreover, the system architecture is explored where development of the nodes including sensing and actuators is presented. …
Decision Agriculture, Abdul Salam, Usman Raza
Decision Agriculture, Abdul Salam, Usman Raza
Computer Information Technology Faculty Publications
In this chapter, the latest developments in the field of decision agriculture are discussed. The practice of management zones in digital agriculture is described for efficient and smart faming. Accordingly, the methodology for delineating management zones is presented. Modeling of decision support systems is explained along with discussion of the issues and challenges in this area. Moreover, the precision agriculture technology is also considered. Moreover, the chapter surveys the state of the decision agriculture technologies in the countries such as Bulgaria, Denmark, France, Israel, Malaysia, Pakistan, United Kingdom, Ukraine, and Sweden. Finally, different field factors such as GPS accuracy and …
Variable Rate Applications In Decision Agriculture, Abdul Salam, Usman Raza
Variable Rate Applications In Decision Agriculture, Abdul Salam, Usman Raza
Computer Information Technology Faculty Publications
In this chapter, the variable rate applications (VRA) are presented for the field of decision agriculture. The characteristics of VRA control systems are described along with control hardware. Different types of VRA systems are discussed (e.g., liquid VRA systems and dry VRA systems). A case study is also explored in this regard. Moreover, recent advances and future trends are also outlined. Accordingly, a sustainable variable-rate irrigation scheduling is studied where different hardware and software component of the cyber-physical system are considered. Finally, chapter is concluded with a novel sensor deployment methodology.
Signals In The Soil: Underground Antennas, Abdul Salam, Usman Raza
Signals In The Soil: Underground Antennas, Abdul Salam, Usman Raza
Computer Information Technology Faculty Publications
Antenna is a major design component of Internet of Underground Things (IOUT) communication system. The use of antenna, in IOUT, differs from traditional communication in that it is buried in the soil. Therefore, one of the main challenges, in IOUT applications, is to establish a reliable communication. To that end, there is a need of designing an underground-specific antenna. Three major factors that can impact the performance of a buried antenna are: (1) effect of high soil permittivity changes the wavelength of EM waves, (2) variations in soil moisture with time affecting the permittivity of the soil, and (3) difference …
Wireless Underground Channel Modeling, Abdul Salam, Usman Raza
Wireless Underground Channel Modeling, Abdul Salam, Usman Raza
Computer Information Technology Faculty Publications
A comprehensive treatment of wireless underground channel modeling is presented in this chapter. The impacts of the soil on bandwidth and path loss are analyzed. A mechanism for the UG channel sounding and multipath characteristics analysis is discussed. Moreover, novel time-domain impulse response model for WUC is reviewed with the explanation of model parameters and statistics. Furthermore, different types of the through-the-soil wireless communications are surveyed. Finally, the chapter concludes with discussion of the UG wireless statistical model and path loss model for through-the-soil wireless communications in decision agriculture. The model presented in this chapter is also validated with empirical …