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2017

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Articles 1 - 30 of 11380

Full-Text Articles in Physical Sciences and Mathematics

Kodysynth, Ryan Kody Dec 2017

Kodysynth, Ryan Kody

Williams Honors College, Honors Research Projects

KodySynth is a VST digital synthesizer that can be loaded into any digital audio workstation such as FL Studio, Ableton, or Garageband. The program was made using the JUCE library which helped with streamlining the process and making it easier to create clean and intuitive looking graphics. The project also needs the Maximilian Library of sounds to create the sound waves that listeners will hear when playing the synthesizer. Users will also be able to plug in a MIDI keyboard to play KodySynth. The functionalities include a choice of 5 oscillator wave types, as well as an attack, decay, sustain ...


Gaze-Contingent Displays For Interactive Text Enhancement, Divya Bajaj Dec 2017

Gaze-Contingent Displays For Interactive Text Enhancement, Divya Bajaj

Graduate Masters Theses

Eye trackers are used for measuring a person’s eye movements, for example, while reading text on a screen. This information can be used by scientists to study the human visual system during object recognition or text comprehension. Moreover, engineers can build gaze-controlled interfaces that trigger a variety of actions when the user looks at pre-specified icons on a screen. In my research, I studied how gaze-contingent displays can be used to enhance the information that is provided by texts. First, I implemented a simple scripting language that allows even users without programming experience to set up gaze-contingent text displays ...


Electrical Properties Of Metal Semiconductor Contacts - Metals On Mos2: A Case Study, Xiao Chang Dec 2017

Electrical Properties Of Metal Semiconductor Contacts - Metals On Mos2: A Case Study, Xiao Chang

Theses

Properties of monolayer semiconductor, MoS2, are presented in the research. Schottky barrier height and Schottky-Mott rules are discussed. The current-voltage measurement and capacitance-voltage measurement are analyzed considering the role of the work


Looping Predictive Method To Improve Accuracy Of A Machine Learning Model, Subramanyam Reddy Pogili Dec 2017

Looping Predictive Method To Improve Accuracy Of A Machine Learning Model, Subramanyam Reddy Pogili

Theses

The topic of this project is an analysis of drug-related tweets. The goal is to build a Machine Learning Model that can distinguish between tweets that indicate drug abuse and other tweets that also contain the name of a drug but do not descri


Characteristics Of Different Deep Neural Networks And Application Of Pre-Trained Model Without Transfer Learning, Zhiqi Peng Dec 2017

Characteristics Of Different Deep Neural Networks And Application Of Pre-Trained Model Without Transfer Learning, Zhiqi Peng

Theses

Deep neural networks have been successful in many areas, some of them even surpass human performances. The goal of this thesis is using data simulations to present different characteristics of three deep neural networks: fully connected deep neural net


A Conversation Centric Approach To Understanding And Supporting The Coordination Of Social Group-Activities, Richard P. Schuler Dec 2017

A Conversation Centric Approach To Understanding And Supporting The Coordination Of Social Group-Activities, Richard P. Schuler

Dissertations

Despite the widespread and large variety of communication tools available to us such as, text messaging, Skype, email, twitter, Facebook, instant messaging, GroupMe, WhatsApp, Snapchat, etc., many people still routinely find coordinating activities with our friends to be a very frustrating experience. Everyone, has at least once, encountered the difficulties involved with deciding what to do as a group. Some friends may be busy, others may have already seen the movie that the others want to see, and some do not like Mexican food. It is a challenge everyone has faced and continue to face. This is a result of ...


Thermochemistry Of Fluorinated Aldehydes And Corresponding Radicals;Thermochemistry And Kinetics Of Diethyl Ether And Ethyl Oxirane Relative To Reactions Under Atmospheric And Combustion Conditions, Douglas Lee Purnell Jr. Dec 2017

Thermochemistry Of Fluorinated Aldehydes And Corresponding Radicals;Thermochemistry And Kinetics Of Diethyl Ether And Ethyl Oxirane Relative To Reactions Under Atmospheric And Combustion Conditions, Douglas Lee Purnell Jr.

Dissertations

Fundamental thermochemical properties including enthalpies (ΔH°f 298), entropies (S°(T)), heat capacities (Cp(T)), and bond dissociation energies (BDEs) for several common and complex hydrocarbon fuel species are determined using computational chemical methods. ΔH°f 298 values are calculated using isodesmic reactions with the CBS-APNO, CBS-4M, CBS-QB3, G2, G3, G4, Weizmann-1 (W1U) and M06-2X, ωB97X, B3-LYP with basis set 6-31G+ (d,p) and 6-31G++(d,p) calculation methods. Structures, moments of inertia, vibrational frequencies, and internal rotor potentials are calculated for contributions to entropies and heat capacities. Kinetic rate parameters are calculated for hydrogen abstraction and ...


Annotation Of Multimedia Learning Materials For Semantic Search, Sheetal Rajgure Dec 2017

Annotation Of Multimedia Learning Materials For Semantic Search, Sheetal Rajgure

Dissertations

Multimedia is the main source for online learning materials, such as videos, slides and textbooks, and its size is growing with the popularity of online programs offered by Universities and Massive Open Online Courses (MOOCs). The increasing amount of multimedia learning resources available online makes it very challenging to browse through the materials or find where a specific concept of interest is covered. To enable semantic search on the lecture materials, their content must be annotated and indexed. Manual annotation of learning materials such as videos is tedious and cannot be envisioned for the growing quantity of online materials. One ...


Roles Of Cosolvents On Protein Stability, Zhaoqian Su Dec 2017

Roles Of Cosolvents On Protein Stability, Zhaoqian Su

Dissertations

The function of a protein is determined by its three-dimensional structure which emerges from the delicate balance of forces involving atoms of the protein and the solvent. This balance can be perturbed by changing temperature, pressure, pH and by adding organic molecules known as cosolvents to the solution. Despite the wide use of cosolvents to perturb protein structures in the lab and in living systems, their molecular mechanisms are still not well established. Understanding these mechanisms is a problem of substantial interest, with potential application to the design of new drugs to target proteins. In this dissertation, we probe the ...


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Semantic Hierarchies For Extracting, Modeling, And Connecting Compliance Requirements In Information Security Control Standards, Matthew L. Hale, Rose F. Gamble Dec 2017

Semantic Hierarchies For Extracting, Modeling, And Connecting Compliance Requirements In Information Security Control Standards, Matthew L. Hale, Rose F. Gamble

Interdisciplinary Informatics Faculty Publications

Companies and government organizations are increasingly compelled, if not required by law, to ensure that their information systems will comply with various federal and industry regulatory standards, such as the NIST Special Publication on Security Controls for Federal Information Systems (NIST SP-800-53), or the Common Criteria (ISO 15408-2). Such organizations operate business or mission critical systems where a lack of or lapse in security protections translates to serious confidentiality, integrity, and availability risks that, if exploited, could result in information disclosure, loss of money, or, at worst, loss of life. To mitigate these risks and ensure that their information systems ...


The Effect Of Rare Variants In Trem2 And Pld3 On Longitudinal Cognitive Function In The Wisconsin Registry For Alzheimer's Prevention, Corinne D. Engelman, Burcu F. Darst, Murat Bilgel, Eva Vasiljevic, Rebecca L. Koscik, Bruno M. Jedynak, Sterling C. Johnson Dec 2017

The Effect Of Rare Variants In Trem2 And Pld3 On Longitudinal Cognitive Function In The Wisconsin Registry For Alzheimer's Prevention, Corinne D. Engelman, Burcu F. Darst, Murat Bilgel, Eva Vasiljevic, Rebecca L. Koscik, Bruno M. Jedynak, Sterling C. Johnson

Mathematics and Statistics Faculty Publications and Presentations

Recent studies have found an association between functional variants in TREM2 and PLD3 and Alzheimer's disease (AD), but their effect on cognitive function is unknown. We examined the effect of these variants on cognitive function in 1449 participants from the Wisconsin Registry for Alzheimer's Prevention, a longitudinal study of initially asymptomatic adults, aged 36–73 years at baseline, enriched for a parental history of AD. A comprehensive cognitive test battery was performed at up to 5 visits. A factor analysis resulted in 6 cognitive factors that were standardized into z scores (∼N [0, 1]); the mean of these ...


Simulations For Designing And Interpreting Intervention Trials In Infectious Diseases., M Elizabeth Halloran, Kari Auranen, Sarah Baird, Nicole E Basta, Steven E Bellan, +Several Additional Authors Dec 2017

Simulations For Designing And Interpreting Intervention Trials In Infectious Diseases., M Elizabeth Halloran, Kari Auranen, Sarah Baird, Nicole E Basta, Steven E Bellan, +Several Additional Authors

Global Health Faculty Publications

BACKGROUND: Interventions in infectious diseases can have both direct effects on individuals who receive the intervention as well as indirect effects in the population. In addition, intervention combinations can have complex interactions at the population level, which are often difficult to adequately assess with standard study designs and analytical methods.

DISCUSSION: Herein, we urge the adoption of a new paradigm for the design and interpretation of intervention trials in infectious diseases, particularly with regard to emerging infectious diseases, one that more accurately reflects the dynamics of the transmission process. In an increasingly complex world, simulations can explicitly represent transmission dynamics ...


An Additional Pulsating Mode (7.35 Mhz) And Pulsations Timing Variations Of Pg 1613+426, Tomomi Otani, Terry D. Oswalt, Patrice Majewski, Riley Jordan, Marc Amaral, Adam Moss Dec 2017

An Additional Pulsating Mode (7.35 Mhz) And Pulsations Timing Variations Of Pg 1613+426, Tomomi Otani, Terry D. Oswalt, Patrice Majewski, Riley Jordan, Marc Amaral, Adam Moss

Publications

We present the detection of an additional pulsation mode (7.35 mHz) of a subdwarf B star, PG 1613+426, and periodic Observed minus Calculated (O-C) variations for two existing pulsations. PG 1613+426 is near the hot end of the sdB instability strip. One pulsation mode (6.94 mHz) was detected so far by Bonanno et al. (2002) and another pulsation mode candidate (7.05 mHz) was proposed with a confidence level above 90% by Kuassivi and Ferlet (2005). To constrain sdB star evolutional scenarios, this star was monitored in 2010, 2011, 2015, and 2017 as a part of ...


Magnetocrystalline Anisotropy Of "-Fe2o3, Imran Ahamed, Rohilt Pathak, Arti Kashyap Dec 2017

Magnetocrystalline Anisotropy Of "-Fe2o3, Imran Ahamed, Rohilt Pathak, Arti Kashyap

Faculty Publications from Nebraska Center for Materials and Nanoscience

The epsilon Fe2O3 phase of iron oxide has been studied to understand the spin structure and the magnetocrystalline anisotropy in the bulk and in thin films of "-Fe2O3 and Co-doped "-Fe2O3. The preferential magnetization direction in the nanoparticles of "-Fe2O3 is along the a-axis [M. Gich et al., Chem. Mater. 18, 3889 (2006)]. Compared to the bulk band gap of 1.9 eV, the thin-film band gap is reduced to 1.3 eV in the Co-free films and to 0.7 eV in the film with partial ...


"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 Dec 2017

"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 ...


Measurement Of The Helicity Asymmetry E In ΩΠ+ΠΠ0 Photoproduction, Z. Akbar, P. Roy, S. Park, V. Crede, A. V. Anisovich, I. Denisenko, E. Klempt, V. A. Nikonov, A. V. Sarantsev, K. P. Adhikari, S. Adhikari, M. J. Amaryan, S. Anefalos Pereira, H. Avakian, J. Ball, M. Battaglieri, V. Batourine, I. Bedlinskiy, S. Boiarinov, W. J. Briscoe, J. Brock, W. K. Brooks, V. D. Burkert, F. T. Cao, C. Carlin, D. S. Carman, A. Celentano, G. Charles, T. Chetry, G. Ciullo, Wesley P. Gohn Dec 2017

Measurement Of The Helicity Asymmetry E In Ω → Π+Π−Π0 Photoproduction, Z. Akbar, P. Roy, S. Park, V. Crede, A. V. Anisovich, I. Denisenko, E. Klempt, V. A. Nikonov, A. V. Sarantsev, K. P. Adhikari, S. Adhikari, M. J. Amaryan, S. Anefalos Pereira, H. Avakian, J. Ball, M. Battaglieri, V. Batourine, I. Bedlinskiy, S. Boiarinov, W. J. Briscoe, J. Brock, W. K. Brooks, V. D. Burkert, F. T. Cao, C. Carlin, D. S. Carman, A. Celentano, G. Charles, T. Chetry, G. Ciullo, Wesley P. Gohn

Physics and Astronomy Faculty Publications

The double-polarization observable E was studied for the reaction γp using the CEBAF Large Acceptance Spectrometer (CLAS) in Hall B at the Thomas Jefferson National Accelerator Facility and the longitudinally polarized frozen-spin target (FROST). The observable was measured from the charged decay mode of the meson, ωπ+ππ0, using a circularly polarized tagged-photon beam with energies ranging from the ω threshold at 1.1 to 2.3 GeV. A partial-wave analysis within the Bonn-Gatchina framework found dominant contributions from the 3/2+ partial wave near threshold, which is identified with the subthreshold N(1720)3/2 ...


Black Hole Hyperaccretion Inflow-Outflow Model. I. Long And Ultra-Long Gamma-Ray Bursts, Tong Liu, Cui-Ying Song, Bing Zhang, Wei-Min Gu, Alexander Heger Dec 2017

Black Hole Hyperaccretion Inflow-Outflow Model. I. Long And Ultra-Long Gamma-Ray Bursts, Tong Liu, Cui-Ying Song, Bing Zhang, Wei-Min Gu, Alexander Heger

Physics & Astronomy Faculty Publications

Long-duration gamma-ray bursts (LGRBs) and ultra-LGRBs (ULGRBs) originate from collapsars, in the center of which a newborn rotating stellar-mass black hole (BH) surrounded by a massive accretion disk may form. In the scenario of the BH hyperaccretion inflow-outflow model and Blandford-Znajek (BZ) mechanism to trigger gamma-ray bursts (GRBs), the real accretion rate to power a BZ jet is far lower than the mass supply rate from the progenitor star. The characteristics of the progenitor stars can be constrained by GRB luminosity observations, and the results exceed usual expectations. LGRBs lasting from several seconds to tens of seconds in the rest ...


A Visible-Near-Infrared Absorbing A–Π2–D–Π1–D–Π2–A Type Dimeric-Porphyrin Donor For High-Performance Organic Solar Cells, Song Chen, Lei Yan, Liangang Xiao, Ke Gao, Wei Tang, Cheng Wang, Chenhui Zhu, Xingzhu Wang, Feng Liu, Xiaobin Peng, Wai-Kwok Wong, Xunjin Zhu Dec 2017

A Visible-Near-Infrared Absorbing A–Π2–D–Π1–D–Π2–A Type Dimeric-Porphyrin Donor For High-Performance Organic Solar Cells, Song Chen, Lei Yan, Liangang Xiao, Ke Gao, Wei Tang, Cheng Wang, Chenhui Zhu, Xingzhu Wang, Feng Liu, Xiaobin Peng, Wai-Kwok Wong, Xunjin Zhu

HKBU Staff Publication

Most of the currently available small molecule bulk heterojunction organic solar cells (BHJ OSCs) only utilize visible light and, to further increase the efficiency, the development of new organic materials that harvest near-infrared (NIR) light to produce an electric current is essential. Herein, a new A–π2–D–π1–D–π2–A type dimeric porphyrin-cored small molecule (CS-DP) is designed, synthesized and characterized. The use of CS-DP with a narrow bandgap (Eg) (1.22 eV) and the deep energy levels of the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) affords the highest power conversion efficiency ...


Stable Solution To L 2,1-Based Robust Inductive Matrix Completion And Its Application In Linking Long Noncoding Rnas To Human Diseases, Ashis Kumer Biswas, Dongchul Kim, Mingon Kang, Chris Ding Dec 2017

Stable Solution To L 2,1-Based Robust Inductive Matrix Completion And Its Application In Linking Long Noncoding Rnas To Human Diseases, Ashis Kumer Biswas, Dongchul Kim, Mingon Kang, Chris Ding

Faculty Publications

Backgrounds A large number of long intergenic non-coding RNAs (lincRNAs) are linked to a broad spectrum of human diseases. The disease association with many other lincRNAs still remain as puzzle. Validation of such links between the two entities through biological experiments are expensive. However, a plethora lincRNA-data are available now, thanks to the High Throughput Sequencing (HTS) platforms, Genome Wide Association Studies (GWAS), etc, which opens the opportunity for cutting-edge machine learning and data mining approaches to extract meaningful relationships among lincRNAs and diseases. However, there are only a few in silico lincRNA-disease association inference tools available to date, and ...


First Narrow-Band Search For Continuous Gravitational Waves From Known Pulsars In Advanced Detector Data, B. P. Abbott, K. Aultoneal, S. Gaudio, K. Gill, E. M. Gretarsson, B. Hughey, M. Muratore, J. W. W. Pratt, S. G. Schwalbe, K. Staats, M. J. Szczepańczyk, M. Zanolin, Et Al. Dec 2017

First Narrow-Band Search For Continuous Gravitational Waves From Known Pulsars In Advanced Detector Data, B. P. Abbott, K. Aultoneal, S. Gaudio, K. Gill, E. M. Gretarsson, B. Hughey, M. Muratore, J. W. W. Pratt, S. G. Schwalbe, K. Staats, M. J. Szczepańczyk, M. Zanolin, Et Al.

Publications

Spinning neutron stars asymmetric with respect to their rotation axis are potential sources of continuous gravitational waves for ground-based interferometric detectors. In the case of known pulsars a fully coherent search, based on matched filtering, which uses the position and rotational parameters obtained from electromagnetic observations, can be carried out. Matched filtering maximizes the signal-to-noise (SNR) ratio, but a large sensitivity loss is expected in case of even a very small mismatch between the assumed and the true signal parameters. For this reason, narrow-band analysis methods have been developed, allowing a fully coherent search for gravitational waves from known pulsars ...


Learning About Modeling In Teacher Preparation Programs, Hyunyi Jung, Eryn Stehr, Jia He, Sharon L. Senk Dec 2017

Learning About Modeling In Teacher Preparation Programs, Hyunyi Jung, Eryn Stehr, Jia He, Sharon L. Senk

Hyunyi Jung

This study explores opportunities that secondary mathematics teacher preparation programs provide to learn about modeling in algebra. Forty-eight course instructors and ten focus groups at five universities were interviewed to answer questions related to modeling. With the analysis of the interview transcripts and related course materials, we found few opportunities for PSTs to engage with the full modeling cycle. Examples of opportunities to learn about algebraic modeling and the participants’ perspectives on the opportunities can contribute to the study of modeling and algebra in teacher education.


Mathematical Modeling Problems: What Affects Teaching Assistants’ Ability To Provide Feedback?, Hyunyi Jung, Alena Moon, Kelsey Joy Rodgers, Farshid Marbouti, Heidi A. Diefes-Dux Dec 2017

Mathematical Modeling Problems: What Affects Teaching Assistants’ Ability To Provide Feedback?, Hyunyi Jung, Alena Moon, Kelsey Joy Rodgers, Farshid Marbouti, Heidi A. Diefes-Dux

Hyunyi Jung

This paper describes opportunities and challenges teaching assistants (TAs) experience when they provide feedback on mathematical modeling problems. Eight TAs were interviewed regarding issues they experience while working for engineering courses in which about 2000 undergraduates create mathematical models to solve realistic problems and communicate their solutions. The opportunities and challenges are associated with the following factors: the process of providing feedback; TAs’ perspectives of modeling problems; and professional training to learn how to provide effective feedback on students’ solutions to mathematical modeling problems. The specific factors that influence TA’s abilities to provide formative feedback are discussed and the ...


Mathematical Knowledge For Teachers: Opportunities To Learn To Teach Algebra In Teacher Education Programs, Eryn Stehr, Jeffrey Craig, Hyunyi Jung, Leonardo Medel, Alexia Mintos, Jill Newton Dec 2017

Mathematical Knowledge For Teachers: Opportunities To Learn To Teach Algebra In Teacher Education Programs, Eryn Stehr, Jeffrey Craig, Hyunyi Jung, Leonardo Medel, Alexia Mintos, Jill Newton

Hyunyi Jung

Preparing to Teach Algebra (PTA) Project gathered data about opportunities to learn to teach algebra provided by secondary teacher education programs. In sharing our findings, we use structures from the Mathematical Knowledge for Teaching (MKT) framework (Ball & Bass, 2003). The MKT framework is one way of situating the ways in which teacher education programs support preservice mathematics teachers in developing necessary knowledge types for teaching algebra. Using the MKT framework as an analytical framework is not straightforward, however. The framework must be interpreted and individualized to the study of algebra and to the opportunities to learn to teach algebra that ...


Models And Modeling, Corey Brady, Hyunyi Jung, Cheryl Eames Dec 2017

Models And Modeling, Corey Brady, Hyunyi Jung, Cheryl Eames

Hyunyi Jung

Modeling has recently received much attention as the Common Core State Standards have included it as one of eight core mathematical practices. The Models and Modeling Working Group builds on a long history of collaboration among researchers studying models and modeling. This year’s session will focus on building capacity within the broad community of researchers who are interested in theoretical and practical perspectives related to models and modeling. We will begin by engaging with a modeling activity and some closely related materials. This experience will serve to ground our discussions and provide a concrete common reference for participants. We ...


Roles Of A Teacher And Researcher During In Situ Professional Development Around The Implementation Of Mathematical Modeling Tasks, Hyunyi Jung, Corey Brady Dec 2017

Roles Of A Teacher And Researcher During In Situ Professional Development Around The Implementation Of Mathematical Modeling Tasks, Hyunyi Jung, Corey Brady

Hyunyi Jung

Partnership with teachers for professional development has been considered beneficial because of the potential of collaborative work in the teacher’s own classroom to be relevant to practice. From this perspective, both teachers and researchers can draw on their own expertise and work as authentic partners. In this study, we address the need for such collaboration and focus on how a teacher and a researcher performed their roles when collaboratively implementing mathematical modeling tasks within a context of in situ professional development. Using multi-tier design-based research, as a framework, a researcher worked in a teacher’s classroom to implement a ...


Pedagogical Knowledge For Algebra On The Runway: Turning Research From The Icme-12 Into Practice, Hyunyi Jung Dec 2017

Pedagogical Knowledge For Algebra On The Runway: Turning Research From The Icme-12 Into Practice, Hyunyi Jung

Hyunyi Jung

This study addresses comparable concerns regarding pedagogical content knowledge (PCK) from different countries, experiences of teachers around the world regarding knowledge for teaching algebra, and the use of such experiences for teaching pre-service teachers. Proceedings from the most recent International Congress on Mathematical Education were analyzed focusing on the importance of PCK and specialized knowledge for teaching algebra. Analysis of multiple international studies provided a holistic approach to bridge research into practice. In this paper, I present the findings of this analysis which were subsequently used to develop contents for teaching algebra in a methods course for pre-service secondary mathematics ...


Supporting Preservice Teachers’ Use Of Connections And Technology In Algebra Teaching And Learning, Eryn Stehr, Hyunyi Jung, Jill Newton, Sharon L. Senk Dec 2017

Supporting Preservice Teachers’ Use Of Connections And Technology In Algebra Teaching And Learning, Eryn Stehr, Hyunyi Jung, Jill Newton, Sharon L. Senk

Hyunyi Jung

Secondary mathematics teacher education programs across the United States opportunities for preservice teachers to make connections and encounter technology to varying degrees, despite recommendations from the Conference Board of the Mathematical Sciences. We explore the research question: What opportunities do secondary mathematics teacher preparation programs provide for preservice teachers to learn about connections and to encounter technologies in learning algebra and learning to teach algebra? We present patterns and examples of a wide range of opportunities that instructors provided related to algebraic connections and use of technology, based on data collected from five teacher education programs across the U.S.


Developing Frameworks For Preparation Of Algebra Teachers: Challenges And Opportunities, Sharon L. Senk, Jill Newton, Jia He, Hyunyi Jung, Eryn Stehr, Alexia Mintos Dec 2017

Developing Frameworks For Preparation Of Algebra Teachers: Challenges And Opportunities, Sharon L. Senk, Jill Newton, Jia He, Hyunyi Jung, Eryn Stehr, Alexia Mintos

Hyunyi Jung

Algebra has long been considered the foundation for higher-level mathematics and a gatekeeper for postsecondary opportunities. In recent decades, increasing enrollments in algebra have placed additional demands on algebra teachers for reaching a more diverse population of students. With the 2010 release and adoption of the Common Core State Standards for Mathematics (CCSSM) by all but a few states, questions arise regarding preparing teachers to teach the standards and practices described in CCSSM. In this paper, we describe the processes used to develop frameworks to study opportunities provided by secondary teacher preparation programs to learn about algebra, algebra teaching, achieving ...


Factors That Help And Hinder Teaching Assistants’ Ability To Execute Their Responsibilities, Farshid Marbouti, Kelsey Joy Rodgers, Hyunyi Jung, Alena Moon, Heidi A. Diefes-Dux Dec 2017

Factors That Help And Hinder Teaching Assistants’ Ability To Execute Their Responsibilities, Farshid Marbouti, Kelsey Joy Rodgers, Hyunyi Jung, Alena Moon, Heidi A. Diefes-Dux

Hyunyi Jung

Graduate and undergraduate teaching assistants (TAs) are key players in large universities’ efforts to incorporate student-centered learning into science, technology, engineering, and mathematics (STEM) courses. This paper investigates, through interviews, the perspectives of eight TAs employed within a First-Year Engineering course with a significant focus on open-ended problem solving. The purpose of this study was to identify factors that helped and hindered teaching assistants’ execution of their responsibilities which included grading and helping students. Engaging TAs in the open-ended problems prior to implementing them in class, face-to-face discussions, and face-to-face lectures were helpful components of training, and training overall was ...