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Automatic Brain Tumor Segmentation By Deep Convolutional Networks And Graph Cuts, Zhenyi Wang 2018 The University of Western Ontario

Automatic Brain Tumor Segmentation By Deep Convolutional Networks And Graph Cuts, Zhenyi Wang

Electronic Thesis and Dissertation Repository

Brain tumor segmentation in magnetic resonance imaging (MRI) is helpful for diagnostics, growth rate prediction, tumor volume measurements and treatment planning of brain tumor. The difficulties for brain tumor segmentation are mainly due to high variation of brain tumors in size, shape, regularity, location, and their heterogeneous appearance (e.g., contrast, intensity and texture variation for different tumors). Due to recent advances in deep convolutional neural networks for semantic image segmentation, automatic brain tumor segmentation is a promising research direction.

This thesis investigates automatic brain tumor segmentation by combining deep convolutional neural network with regularization by a graph cut. We ...


Exploring The Determinants Of Vulnerable Road Users’ Crash Severity In State Roads, Álvaro Caviedes 2018 Portland State University

Exploring The Determinants Of Vulnerable Road Users’ Crash Severity In State Roads, Álvaro Caviedes

TREC Friday Seminar Series

Part of the Student Presentations from TRB

Pedestrians and bicyclists are the most vulnerable road users and suffer the most severe consequences when crashes take place. An extensive literature is available for crash severity in terms of driver safety, but fewer studies have explored non-motorized users’ crash severity. Furthermore, most research efforts have examined pedestrian and bicyclist crash severity in urban areas. This study focuses on state roads (mostly outside major urban areas) and aims to identify contributing risk factors of fatal and severe crashes involving pedestrians and bicyclists in state roads. The results seem to suggest that besides improvements ...


Ieee Input To The Communication From The Commission To The Institutions On Setting Out The Eu Approach To Standard Essential Patents, Konstantinos Karachalios 2018 IEEE

Ieee Input To The Communication From The Commission To The Institutions On Setting Out The Eu Approach To Standard Essential Patents, Konstantinos Karachalios

Konstantinos Karachalios

No abstract provided.


Parallel Synthesis And High Throughput Dissolution Testing Of Biodegradable Polyanhydride Copolymers, Brandon M. Vogel, Joao T. Cabral, Naomi Eidelman, Balaji Narasimhan, Surya K. Mallapragada 2018 National Institute of Standards and Technology

Parallel Synthesis And High Throughput Dissolution Testing Of Biodegradable Polyanhydride Copolymers, Brandon M. Vogel, Joao T. Cabral, Naomi Eidelman, Balaji Narasimhan, Surya K. Mallapragada

Brandon M Vogel

We have demonstrated that polycondensation reactions can be carried out in a combinatorial fashion and that the polymer library can be screened at high throughput using a rapid prototyping technique to fabricate multiwell substrates. A linearly varying compositional library of 100 different biodegradable polyanhydride random copolymers that are promising carriers for controlled drug delivery was designed, fabricated, and characterized by IR microscopy within a few hours. The polyanhydride copolymer library was based on 1,6-bis(p-carboxyphenoxy)hexane (CPH) and sebacic anhydride (SA) and was characterized with infrared microspectroscopy to determine the composition within each well. Since degradation and release rates ...


Matrix Metalloproteinase-14 Is A Mechanically Regulated Activator Of Secreted Mmps And Invasion, Amanda Haage, Dong Hyun Nam, Xin Ge, Ian C. Schneider 2018 Iowa State University

Matrix Metalloproteinase-14 Is A Mechanically Regulated Activator Of Secreted Mmps And Invasion, Amanda Haage, Dong Hyun Nam, Xin Ge, Ian C. Schneider

Ian C. Schneider

Matrix metalloproteinases (MMPs) are extracellular matrix (ECM) degrading enzymes and have complex and specific regulation networks. This includes activation interactions, where one MMP family member activates another. ECM degradation and MMP activation can be initiated by several different stimuli including changes in ECM mechanical properties or intracellular contractility. These mechanical stimuli are known enhancers of metastatic potential. MMP-14 facilitates local ECM degradation and is well known as a major mediator of cell migration, angiogenesis and invasion. Recently, function blocking antibodies have been developed to specifically block MMP-14, providing a useful tool for research as well as therapeutic applications. Here we ...


Epics: Children's Educational Demonstrations, Aaron P. Kreuter, Ruby A. Wellen, Alexander D. Falkenberg, Jamie M. Arabshahi 2018 Purdue University

Epics: Children's Educational Demonstrations, Aaron P. Kreuter, Ruby A. Wellen, Alexander D. Falkenberg, Jamie M. Arabshahi

Engagement & Service-Learning Summit: Reciprocal & Sustainable Partnerships

No abstract provided.


Smart Travel, Apoorva Sulakhe 2018 Purdue University

Smart Travel, Apoorva Sulakhe

Engagement & Service-Learning Summit: Reciprocal & Sustainable Partnerships

The purpose of this poster is to further explore the idea of a “SMART” travel app. To design an app that is self-monitoring, that could analyze data and present the best travel options for customers in terms of available providers, price and time. Not only should the app be beneficial to customers but it should also be beneficial to providers. Through a series of analysis, questionnaires and eye tracking experiments our team was able to design an app that will provide customers with the information needed to make a well-informed decision on how to travel from point A to B ...


Water Supply In Developing Countries, Jason K. Hawes, Ernest R. Blatchley III, Audrey Caprio, Andrew T. Kanach 2018 Purdue University

Water Supply In Developing Countries, Jason K. Hawes, Ernest R. Blatchley Iii, Audrey Caprio, Andrew T. Kanach

Engagement & Service-Learning Summit: Reciprocal & Sustainable Partnerships

No abstract provided.


Epics Global Service Learning Pedagogy Explored For Construction Engineering Education, Brandon Fulk, Seyedali Ghahari, Makrand Hastak 2018 Purdue University

Epics Global Service Learning Pedagogy Explored For Construction Engineering Education, Brandon Fulk, Seyedali Ghahari, Makrand Hastak

Engagement & Service-Learning Summit: Reciprocal & Sustainable Partnerships

EPICS is a service-learning design program in which teams of students partner with local and global community organizations to address human, community, and environmental needs. EPICS is an academic program in which teams of Purdue students partner with local not-for-profit community organizations to provide technology solutions. Team Ecuador is a division of the non-profit EPICS program at Purdue University. Since 2012 Team Ecuador has been partnered with FEVI, a non-governmental organization, to develop education infrastructure in Lumbisi. The current focus of Team Ecuador is to design, fundraise, and construct and Education Center for the community of Lumbisi. We are working ...


Nandi Clean Kitchen Study, Oliver S. Schroeder, Mina Mohsenian 2018 Purdue University

Nandi Clean Kitchen Study, Oliver S. Schroeder, Mina Mohsenian

Engagement & Service-Learning Summit: Reciprocal & Sustainable Partnerships

No abstract provided.


Pyrolysis As An Economical And Ecological Treatment Option For Solid Anaerobic Digestate And Municipal Sewage Sludge, Devon J. Barry 2018 The University of Western Ontario

Pyrolysis As An Economical And Ecological Treatment Option For Solid Anaerobic Digestate And Municipal Sewage Sludge, Devon J. Barry

Electronic Thesis and Dissertation Repository

The aim of this thesis was to investigate the potential for pyrolysis of solid anaerobic digestate and municipal sewage sludge. Slow, fast, and autothermal pyrolysis experiments were conducted for the anaerobic digestate while slow and fast pyrolysis experiments were carried out for the sewage sludge. Pyrolysis temperatures ranged from 250 to 550 ᵒC. The effect of pyrolysis conditions on the pyrolysis products was examined.

Fast pyrolysis at higher temperatures was favourable for energy recovery in the bio-oil products. Slow pyrolysis was favourable for the biochar products. Lower pyrolysis temperatures favoured energy recovery in the biochar; while higher temperatures increased biochar ...


The Production Of Pyrolytic Biochar For Addition In Value-Added Composite Material, Douglas Matthew Cuthbertson 2018 The University of Western Ontario

The Production Of Pyrolytic Biochar For Addition In Value-Added Composite Material, Douglas Matthew Cuthbertson

Electronic Thesis and Dissertation Repository

Pyrolytic biochar has recently gained attention for its potential value as a carbon sequestering by-product that can be used in industrial applications. While biochar is typically targeted for soil amendment applications, higher value applications such as addition in consumer products and building materials needs to be investigated.

In this study, biochar is produced from three different Canadian feedstocks using three different pyrolysis methods. The biochar is characterized to determine the effects that feedstock selection and pyrolysis conditions has on biochar properties. The biochar is also incorporated into concrete at varying concentrations to create a lightweight and sustainable material. The effect ...


Evaluation Of The Role Of Driver’S Knowledge Of Who Has The Right-Of-Way Contributes To Interstate On-Ramp Crashes, Deogratias Eustace, Vamsi Krishna Indupuru 2018 University of Dayton

Evaluation Of The Role Of Driver’S Knowledge Of Who Has The Right-Of-Way Contributes To Interstate On-Ramp Crashes, Deogratias Eustace, Vamsi Krishna Indupuru

Deogratias Eustace

The knowledge of drivers on who has the right-of-way between the one on mainline lanes of a freeway and the one entering the freeway through on-ramp junction lane was evaluated. In addition, drivers’ opinions on how to make the on-ramp junctions safer were collected. A survey instrument with 21 items requesting drivers’ information in regard with demographics, freeway driving experience, knowledge of right-of-way and merging practices was used for data collection. The results show that crashes are relatively rare events and for some reasons, most of them never happen but result into near misses, which can not be reported and ...


Utm, Atm, Stm… Slices Of The Sky?, Ruth E. Stilwell 2018 Norwich University

Utm, Atm, Stm… Slices Of The Sky?, Ruth E. Stilwell

Space Traffic Management Conference

UTM, ATM, STM… slices of the sky?

This paper will examine the functional differences between Unmanned Aircraft Traffic Management Systems, Air Traffic Management Systems, and Space Traffic Management. Understanding both the similarities between the systems and the different functional requirements of each concept is critical in the discussion and development of STM. While there are many commonalities in each area, it is important to understand how the different environments affect the ability to develop policies, procedure and technologies to manage the vehicles operating in the distinct environment. Both technical and legal frameworks will be discussed.

Building a conceptual framework for ...


Responsible Behavior For Constellations And Clusters, Darren McKnight, Jonathan Rosenblatt, Darren Garber 2018 Integrity Applications, Inc.

Responsible Behavior For Constellations And Clusters, Darren Mcknight, Jonathan Rosenblatt, Darren Garber

Space Traffic Management Conference

Many large constellations are being considered for deployment over the next ten years into low earth orbit (LEO). This paper seeks to quantify the risks that these constellations pose to the debris environment, the risks that the debris environment poses to these constellations, and the risks that these constellations pose to themselves. The three representative constellations examined in detail in this paper are operated (or planned to be operated) by Spire Global, Iridium, and OneWeb. This paper provides a balanced risk analysis including collision risk, operational risk, and non-adherence risk. For perspective, the risk posed by these economically useful constellations ...


Stress Analysis Of Embedded Devices Under Thermal Cycling, Sadhana Radhakrishnan 2018 Portland State University

Stress Analysis Of Embedded Devices Under Thermal Cycling, Sadhana Radhakrishnan

Dissertations and Theses

Embedded active and passive devices has been increasingly used by in order to integrate more functions inside the same or smaller size device and to meet the need for better electrical performance of the component assemblies.

Solder joints have been used in the electronic industry as both structural and electrical interconnections between electronic packages and printed circuit boards (PCB). When solder joints are under thermal cyclic loading, mismatch in coefficients of thermal expansion (CTE) between the printed circuit boards and the solder balls creates thermal strains and stresses on the joints, which may finally result in cracking. Consequently, the mechanical ...


Managing Strategic Intellectual Property Assets In The Fuzzy Front End Of New Product Development Process, Yonghee Cho, Tugrul U. Daim 2018 Portland State University

Managing Strategic Intellectual Property Assets In The Fuzzy Front End Of New Product Development Process, Yonghee Cho, Tugrul U. Daim

Joseph Cho

The strategic use of intellectual property (IP) is crucial for technology-based companies to gain competitive advantage. The recent transformation of the US patent system brings new challenges and opportunities in this arena. In this regard, this study attempts to identify techniques which can help with IP evaluation and selection in the fuzzy front end (FFE) of new product development (NPD) process. This study combines data collection methods such as mining the literature, conducting in-depth interviews, surveying questionnaires, and analyzing cases. This research serves as an analysis of modern literature and identifies a multi-criteria weighted scoring model that can be employed ...


Practical Implications Of Erythromycin Resistance Gene Diversity On Surveillance And Monitoring Of Resistance, Elizabeth L. Rieke, Jinlyung Choi, Thomas B. Moorman, Michelle L. Soupir, Heather K. Allen, Schuyler D. Smith, Adina Howe 2018 Iowa State University

Practical Implications Of Erythromycin Resistance Gene Diversity On Surveillance And Monitoring Of Resistance, Elizabeth L. Rieke, Jinlyung Choi, Thomas B. Moorman, Michelle L. Soupir, Heather K. Allen, Schuyler D. Smith, Adina Howe

Agricultural and Biosystems Engineering Publications

Use of antibiotics in human and animal medicine has applied selective pressure for the global dissemination of antibiotic-resistant bacteria. Therefore, it is of interest to develop strategies to mitigate the continued amplification and transmission of resistance genes in environmental reservoirs such as farms, hospitals, and watersheds. However, the efficacy of mitigation strategies is difficult to evaluate because it is unclear which resistance genes are important to monitor, and which primers to use to detect those genes. Here we evaluated the diversity of one type of macrolide antibiotic resistance gene (erm) in one type of environment (manure) to determine which primers ...


Quantum Tricritical Point In The Temperature-Pressure-Magnetic Field Phase Diagram Of Cetige3, Udhara S. Kaluarachchi, Valentin Taufor, Sergey Bud’ko, Paul C. Canfield 2018 Iowa State University and Ames Laboratory

Quantum Tricritical Point In The Temperature-Pressure-Magnetic Field Phase Diagram Of Cetige3, Udhara S. Kaluarachchi, Valentin Taufor, Sergey Bud’Ko, Paul C. Canfield

Ames Laboratory Accepted Manuscripts

We report the temperature-pressure-magnetic-field phase diagram of the ferromagnetic Kondo-lattice CeTiGe 3 determined by means of electrical resistivity measurements. Measurements up to ∼ 5.8 GPa reveal a rich phase diagram with multiple phase transitions. At ambient pressure, CeTiGe 3 orders ferromagnetically at T C = 14 K. Application of pressure suppresses T C , but a pressure-induced ferromagnetic quantum criticality is avoided by the appearance of two new successive transitions for p > 4.1 GPa that are probably antiferromagnetic in nature. These two transitions are suppressed under pressure, with the lower-temperature phase being fully suppressed above 5.3 GPa. The critical pressures ...


Monitoring Tylosin And Sulfamethazine In A Tile-Drained Agricultural Watershed Using Polar Organic Chemical Integrative Sampler (Pocis), Maurice T. Washingtion, Thomas Moorman, Michelle L. Soupir, Mack C. Shelley II, Amy J. Morrow 2018 Iowa State University

Monitoring Tylosin And Sulfamethazine In A Tile-Drained Agricultural Watershed Using Polar Organic Chemical Integrative Sampler (Pocis), Maurice T. Washingtion, Thomas Moorman, Michelle L. Soupir, Mack C. Shelley Ii, Amy J. Morrow

Agricultural and Biosystems Engineering Publications

This study evaluated the influence of temporal variation on the occurrence, fate, and transport of tylosin (TYL) and sulfamethazine (SMZ); antibiotics commonly used in swine production. Atrazine (ATZ) was used as a reference analyte to indicate the agricultural origin of the antibiotics. We also assessed the impact of season and hydrology on antibiotic concentrations. A reconnaissance study of the South Fork watershed of the Iowa River (SFIR), was conducted from 2013 to 2015. Tile drain effluent and surface water were monitored using polar organic integrative sampler (POCIS) technology. Approximately 169 animal feeding operations (AFOs) exist in SFIR, with 153 of ...


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