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Big Data And The Future Of Travel Modeling, Greg Macfarlane 2017 Parsons Brinckerhoff

Big Data And The Future Of Travel Modeling, Greg Macfarlane

TREC Friday Seminar Series

New technologies such as smart phones and web applications constantly collect data on individuals' trip-making and travel patterns. Efforts at using these "Big data" products, to date, have focused on using them to expand or inform traditional travel demand modeling frameworks; however, it is worth considering if a new framework built to maximize the strengths of big data would be more useful to policy makers and planners.

In this presentation Greg Macfarlane will present a discussion on elements of travel models that could quickly benefit from big data and concurrent machine learning techniques, and results from a preliminary application of ...


Progress Towards Terahertz Acoustic Phonon Generation In Doping Superlattices, Thomas E. Wilson 2017 Marshall University

Progress Towards Terahertz Acoustic Phonon Generation In Doping Superlattices, Thomas E. Wilson

Thomas E. Wilson

Progress is described in experiments to generate coherent terahertz acoustic phonons in silicon doping superlattices by the resonant absorption of nanosecond-pulsed far-infrared laser radiation. Future experiments are proposed that would use the superlattice as a transducer in a terahertz cryogenic acoustic reflection microscope with sub-nanometer resolution.


Efficacy Of Natural Plant Extracts In Antimicrobial Packaging Systems, Kofi Jocelyn Brobbey, Jarkko J. Saarinen Adj. Prof., Hanna-leena Alakomi Dr., Baoru Yang Prof., Martti Toivakka Prof. 2017 Åbo Akademi Univresity

Efficacy Of Natural Plant Extracts In Antimicrobial Packaging Systems, Kofi Jocelyn Brobbey, Jarkko J. Saarinen Adj. Prof., Hanna-Leena Alakomi Dr., Baoru Yang Prof., Martti Toivakka Prof.

Journal of Applied Packaging Research

Antimicrobial plant extracts used in food packaging provide a healthy packaging alternatives. They contain aromatic and phenolic compounds that are responsible for their antibacterial properties. In this study, we report the antibacterial effects of extracts obtained from sea buckthorn (Hippophaë rhamnoides L.) leaves, and inner bark of pine trees (Pinus silvestris) that were applied as coatings on paper suitable for packaging application. Extracts from sea buckthorn leaves exhibited antibacterial effect both as a solvent extract and as a coating on paper against Pseudomonas aeruginosa as test bacteria. However, coatings of pine bark extract did not exhibit antibacterial effect as coatings ...


Pulse Shape And Timing Dependence On The Spike-Timing Dependent Plasticity Response Of Ion-Conducting Memristors As Synapses, Kris A. Campbell, Kolton T. Drake, Elisa H. Barney Smith 2017 Boise State University

Pulse Shape And Timing Dependence On The Spike-Timing Dependent Plasticity Response Of Ion-Conducting Memristors As Synapses, Kris A. Campbell, Kolton T. Drake, Elisa H. Barney Smith

Elisa H. Barney Smith

Ion-conducting memristors comprised of the layered materials Ge2Se3/SnSe/Ag are promising candidates for neuromorphic computing applications. Here, the spike-timing dependent plasticity (STDP) application is demonstrated for the first time with a single memristor type operating as a synapse over a timescale of 10 orders of magnitude, from nanoseconds through seconds. This large dynamic range allows the memristors to be useful in applications that require slow biological times, as well as fast times such as needed in neuromorphic computing, thus allowing multiple functions in one design for one memristor type—a “one size fits all” approach. This ...


Next Generation Wireless Communications: Cognitive Radio, ADNAN QUADRI, Naima Kaabouch 2017 University of North Dakota

Next Generation Wireless Communications: Cognitive Radio, Adnan Quadri, Naima Kaabouch

ADNAN QUADRI

Wireless networks and information traffic have grown exponentially over the last decade. Consequently, an increase in demand of radio frequency bandwidth has resulted. Recent studies have shown that with the current fixed spectrum allocation, there are spectrum holes that are not utilized all the time by the licensed users while other frequency channels, such as Wi-Fi, are heavily used. To efficiently utilize the radio spectrum, cognitive radio stands to be a promising solution as it will be reconfigurable, self-aware and efficient. This research aims to develop techniques that will allow a cognitive radio system to enhance the radio’s decision-making ...


A New Market Segmentation Approach: Evidence From Two Canadian Cities, Dea van Lierop, Ahmed El-Geneidy 2017 McGill University

A New Market Segmentation Approach: Evidence From Two Canadian Cities, Dea Van Lierop, Ahmed El-Geneidy

Journal of Public Transportation

Traditionally, transit market research has categorized passengers into two distinct groups: captive riders and choice riders. Market analyses that depend on such broad categories are likely to overlook important details about the needs and desires of their customer base. This study attempts to better understand the complexities of the different groups who take transit by using information from five years of customer satisfaction questionnaires collected by two Canadian transit providers. Employing a series of clustering techniques, the analysis reveals that nine market segments are present across different modes in both transit agencies. Three different overarching groups of transit users are ...


Identifying Key Factors Of Rail Transit Service Quality: An Empirical Analysis For Istanbul, Erkan Isikli, Nezir Aydin, Erkan Celik, Alev Taskin Gumus 2017 Istanbul Technical University

Identifying Key Factors Of Rail Transit Service Quality: An Empirical Analysis For Istanbul, Erkan Isikli, Nezir Aydin, Erkan Celik, Alev Taskin Gumus

Journal of Public Transportation

Providing a high quality of service in public transportation is essential to reduce dissatisfactions stemming from traffic congestion and noise. Public transport providers need to find ways to dilute the effects of immoderate use of private cars in big cities while maintaining a sufficient level of customer satisfaction. This study aimed to identify the key service quality (SQ) factors that drive passenger satisfaction in Istanbul’s rail transit (RT) system using data obtained from an extensive survey conducted by the Istanbul Public Transportation Co. A total of 11,116 passengers who used rail transport from May 15–June 3, 2012 ...


Impact Of Different Bus Stop Designs On Bus Operating Time Components, Xiaodong Liu, Yao Yang, Meng Meng, Andreas Rau 2017 TUM CREATE Ltd.

Impact Of Different Bus Stop Designs On Bus Operating Time Components, Xiaodong Liu, Yao Yang, Meng Meng, Andreas Rau

Journal of Public Transportation

The design of bus stops significantly affects bus operation. The delay time caused by inappropriate bus stop design adversely influences the efficiency of the system. This paper aims to examine the influence of bus stops on bus operating time components through statistical analysis, using Singapore as a case study. Two common types of bus stops, bus bay and curb-side stop, were investigated during the field survey to obtain actual data of bus operation at stops. Sixteen stops were chosen in pairs to compare the differences in operating time at bus stops. Bus operating times, including acceleration time, dwell time, deceleration ...


A Framework For Measuring The Spatial Equity In The Distribution Of Public Transportation Benefits, Seyyed Amir Hosein Mortazavi, Meisam Akbarzadeh 2017 Isfahan University of Technology

A Framework For Measuring The Spatial Equity In The Distribution Of Public Transportation Benefits, Seyyed Amir Hosein Mortazavi, Meisam Akbarzadeh

Journal of Public Transportation

This paper proposes that an equitable transit system requires that the geographical distribution of transit service benefits conform to the geographical distribution of the citizens with the greatest need for public transportation. This is the essence of vertical equity. This study calculated “connectivity power,” which reflects public transit service quality in each traffic analysis zone (TAZ) in a city to indicate the amount of benefit that TAZ is receiving from the transit system. The number of carless citizens in each TAZ was also calculated as an index of need to the public transit services in that area. Conformity of need ...


Android Mobile Application For Hospital Executives, Vihitha Nalagatla 2017 California State University - San Bernardino

Android Mobile Application For Hospital Executives, Vihitha Nalagatla

Electronic Theses, Projects, and Dissertations

Hospitals are the largest and most complex organizations where health care is provided. Safe and effective patient care services in hospitals depend on the efficient decisions made by hospital executives. The main task of hospital executives is to ensure the hospital can provide high quality patient care and services. “Android Mobile Application For Hospital Executives” is an Android application used for displaying hospital performance metrics on a daily basis. This application allows hospital executives to review and monitor hospital operational data with ease of access and in a portable manner. Thus, reducing the effort of the hospital executives to perform ...


Inspire E-News 3 2017, Western Michigan University 2017 Western Michigan University

Inspire E-News 3 2017, Western Michigan University

College of Engineering and Applied Sciences Newsletter

  • SAE Baja vehicle shreds the track in the Blizzard Baja
  • Engineering deans bring ideas and issues to Capitol Hill
  • Formula SAE vehicle to hit the track at Fiat Chrysler before competition


Automatic Generation Of Web Applications And Management System, Yu Zhou 2017 California State University, San Bernardino

Automatic Generation Of Web Applications And Management System, Yu Zhou

Electronic Theses, Projects, and Dissertations

One of the major difficulties in web application design is the tediousness of constructing new web pages from scratch. For traditional web application projects, the web application designers usually design and implement web application projects step by step, in detail. My project is called “automatic generation of web applications and management system.” This web application generator can generate the generic and customized web applications based on software engineering theories. The flow driven methodology will be used to drive the project by Business Process Model Notation (BPMN). Modules of the project are: database, web server, HTML page, functionality, financial analysis model ...


Benzene Formation In Electronic Cigarettes, James F. Pankow, Kilsun Kim, Kevin J. McWhirter, Wentai Luo, Jorge O. Escobedo, Robert M. Strongin, Anna K. Duell, David H. Peyton 2017 Portland State University

Benzene Formation In Electronic Cigarettes, James F. Pankow, Kilsun Kim, Kevin J. Mcwhirter, Wentai Luo, Jorge O. Escobedo, Robert M. Strongin, Anna K. Duell, David H. Peyton

Chemistry Faculty Publications and Presentations

The heating of the fluids used in electronic cigarettes (“e-cigarettes”) used to create “vaping” aerosols is capable of causing a wide range of degradation reaction products. We investigated formation of benzene (an important human carcinogen) from e-cigarette fluids containing propylene glycol (PG), glycerol (GL), benzoic acid, the flavor chemical benzaldehyde, and nicotine.


Technical Report: Control Using The Smooth Robustness Of Temporal Logic, Yash Vardhan Pant, Houssam Abbas, Rahul Mangharam 2017 University of Pennsylvania

Technical Report: Control Using The Smooth Robustness Of Temporal Logic, Yash Vardhan Pant, Houssam Abbas, Rahul Mangharam

Real-Time and Embedded Systems Lab (mLAB)

Cyber-Physical Systems must withstand a wide range of errors, from bugs in their software to attacks on their physical sensors. Given a formal specification of their desired behavior in Metric Temporal Logic (MTL), the robust semantics of the specification provides a notion of system robustness that can be calculated directly on the output behavior of the system, without explicit reference to the various sources or models of the errors. The robustness of the MTL specification has been used both to verify the system offline (via robustness minimization) and to control the system online (to maximize its robustness over some horizon ...


Analysis Of Autonomous Vehicle Policies, Bryan Gibson 2017 University of Kentucky

Analysis Of Autonomous Vehicle Policies, Bryan Gibson

Kentucky Transportation Center Research Report

The rapid development and adoption of connected and autonomous vehicles will transform the U.S. transportation system over the next 30 years. Although the widespread use of fully connected and autonomous vehicles is still several years away, it is nonetheless critical that legislators, policymakers, and regulators understand how the presence of these vehicles will restructure the operation of roadway networks. Without a doubt, lawmakers and policymakers will need to develop new laws — and revise existing ones — to account for the presence of connected and autonomous vehicles. This report provides an overview of connected and autonomous vehicles — their positives and negatives ...


Using Supervised Learning To Compensate For High Latency In Planetary Exploration, Andrew Jones, Jeremy Straub 2017 North Dakota State University--Fargo

Using Supervised Learning To Compensate For High Latency In Planetary Exploration, Andrew Jones, Jeremy Straub

Jeremy Straub

Planetary exploration utilizes orbital, aerial, surface and potentially sub-surface vehicles at remote locations. At present, many of these vehicles must be teleoperated or commanded from Earth, requiring data to be transmitted over significant distances (taking several minutes or longer). This problem gets progressively more pronounced as vehicles are operated further and further from the Earth. While missions to send humans to deep space and increased autonomy both prospectively present partial solutions to this challenge, human controllers may wish to operate the vehicle with an experience more akin to in-situ exploration.

Typically, using remotely operated vehicles for exploring planets entails dealing ...


Zone Based Hybrid Approach For Clustering And Data Collection In Wireless Sensor Networks, Karanam R. Dayananda, Jeremy Straub 2017 North Dakota State University--Fargo

Zone Based Hybrid Approach For Clustering And Data Collection In Wireless Sensor Networks, Karanam R. Dayananda, Jeremy Straub

Jeremy Straub

A wireless sensor network (WSN) is a collection of
spatially distributed autonomous sensor nodes that can be used to
monitor, among other things, environmental conditions. WSN
sensor nodes are constrained by their limited energy supply,
communication range and local computational capabilities. Data
routing is an area that can be optimized to allow nodes to conserve
energy, improving the network’s overall lifetime. Though many
routing protocols can be used, using a clustering protocol can play
an important role in conserving WSN energy. Under this
approach, the network is divided into multiple clusters. The
leader of each cluster supervises data transmission ...


Chiral Light Intrinsically Couples To Extrinsic/Pseudo-Chiral Metasurfaces Made Of Tilted Gold Nanowires, Alessandro Belardini, Marco Centini, Grigore Leahu, David C. Hooper, Roberto Li Voti, Eugenio Fazio, Joseph W. Haus, Andrew Sarangan, Ventsislav K. Valev, Concita Sibilia 2017 Sapienza Università di Roma

Chiral Light Intrinsically Couples To Extrinsic/Pseudo-Chiral Metasurfaces Made Of Tilted Gold Nanowires, Alessandro Belardini, Marco Centini, Grigore Leahu, David C. Hooper, Roberto Li Voti, Eugenio Fazio, Joseph W. Haus, Andrew Sarangan, Ventsislav K. Valev, Concita Sibilia

Andrew Sarangan

Extrinsic or pseudo-chiral (meta)surfaces have an achiral structure, yet they can give rise to circular dichroism when the experiment itself becomes chiral. Although these surfaces are known to yield differences in reflected and transmitted circularly polarized light, the exact mechanism of the interaction has never been directly demonstrated. Here we present a comprehensive linear and nonlinear optical investigation of a metasurface composed of tilted gold nanowires. In the linear regime, we directly demonstrate the selective absorption of circularly polarised light depending on the orientation of the metasurface. In the nonlinear regime, we demonstrate for the first time how second ...


Chiral Light Intrinsically Couples To Extrinsic/Pseudo-Chiral Metasurfaces Made Of Tilted Gold Nanowires, Alessandro Belardini, Marco Centini, Grigore Leahu, David C. Hooper, Roberto Li Voti, Eugenio Fazio, Joseph W. Haus, Andrew Sarangan, Ventsislav K. Valev, Concita Sibilia 2017 Sapienza Università di Roma

Chiral Light Intrinsically Couples To Extrinsic/Pseudo-Chiral Metasurfaces Made Of Tilted Gold Nanowires, Alessandro Belardini, Marco Centini, Grigore Leahu, David C. Hooper, Roberto Li Voti, Eugenio Fazio, Joseph W. Haus, Andrew Sarangan, Ventsislav K. Valev, Concita Sibilia

Joseph W Haus

Extrinsic or pseudo-chiral (meta)surfaces have an achiral structure, yet they can give rise to circular dichroism when the experiment itself becomes chiral. Although these surfaces are known to yield differences in reflected and transmitted circularly polarized light, the exact mechanism of the interaction has never been directly demonstrated. Here we present a comprehensive linear and nonlinear optical investigation of a metasurface composed of tilted gold nanowires. In the linear regime, we directly demonstrate the selective absorption of circularly polarised light depending on the orientation of the metasurface. In the nonlinear regime, we demonstrate for the first time how second ...


Regulating By Robot: Administrative Decision Making In The Machine-Learning Era, Cary Coglianese, David Lehr 2017 University of Pennsylvania Law School

Regulating By Robot: Administrative Decision Making In The Machine-Learning Era, Cary Coglianese, David Lehr

Faculty Scholarship

Machine-learning algorithms are transforming large segments of the economy, underlying everything from product marketing by online retailers to personalized search engines, and from advanced medical imaging to the software in self-driving cars. As machine learning’s use has expanded across all facets of society, anxiety has emerged about the intrusion of algorithmic machines into facets of life previously dependent on human judgment. Alarm bells sounding over the diffusion of artificial intelligence throughout the private sector only portend greater anxiety about digital robots replacing humans in the governmental sphere. A few administrative agencies have already begun to adopt this technology, while ...


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