Digital Commons Network^™

Testing Of Multi-Span Bridges With Full Span Precast Prestressed Concrete Panels (Phase 1), Robert J. Peterman, J. A. Ramirez

JTRP Technical Reports

The purpose of this study was to assess the behavior and durability of multi-span bridges constructed with full-span prestressed concrete form panels. The use of full-span prestressed concrete form panels for bridges with spans of 40 ft. or less is an economical method of construction due to the reduction of on-site formwork and labor required by alternate cast-in-place systems. In this research, a pair of two-span bridges utilizing full-span prestressed concrete form panels were fabricated and tested in the Karl H. Kettelhut Structural Engineering Laboratory at Purdue University. Time-dependent effects were monitored during the cast-in-place (CIP) concrete cure period of …

Determining The Viability Of The "Rated Axle Load Enhancement System" For Concrete Pavement, Chih-Jen Lee, Charles D. Sutton, Thomas D. White

JTRP Technical Reports

Concrete pavements in large part are designed as flat slabs although in the past they have included thickened edges. Thickened edge slabs are used today where positive load transfer for some reason cannot be provided. The Rated Axle Load Enhancement (RALE) system concept involves the use of longitudinal stems to stiffen the concrete slab. A close analogy is that of a wide double or quadruple "T" beam. The stems may be rectangular or trapezoidal.

In this study, RALE systems with two and four rectangular stems as well as plain concrete slabs were analyzed using the finite element method (FEM). The …

Automating Field Data Collection In Maintenance Operations, Bob G. Mccullouch

JTRP Technical Reports

Field data collection and management in DOT organizations requires a considerable amount of resources in the form of personnel and management systems. Recent studies performed by the researcher revealed that an average of 30-50% of some field supervisory personnel's time is spent on processing field data paperwork. This is a considerable amount of time spent on an undesirable task and is taking these employees away from more important job duties. This project automated two maintenance field data collection functions. One was a Crew Day Card, which is a card used by a maintenance crew to document the activity performed. Information …

Study Of Side Ditch Liners For Highway Application, Anthony S. Calderon, Philippe L. Bourdeau

JTRP Technical Reports

Over the past few years, the INDOT new materials department has received numerous erosion control products (mostly geosynthetics) to evaluate as alternatives to riprap and concrete in ditch liners. Potential benefits include lower construction costs and better aesthetics over current products. Unfortunately, no specification, design methodology, or classification system currently exists for these erosion control blankets.

In this project's phase I, existing information and knowledge on erosion control materials used to line highway side drainage ditches were investigated. From the available technical1iterature (journal and conference publications, other DOTs specifications, manufacturer documentation, independent test laboratory test data), design methodologies, classification system, …

Indot Multimedia Applications Prototype Development, Bob G. Mccullouch

JTRP Technical Reports

Multimedia technologies open a new data set for DOT organizations. By adding pictures, sounds, animation, and video, new computer applications can be developed that will bring many benefits. This project investigated the utilization of multimedia into DOT operations. Applications were developed in three different topical areas: Employee Information or Orientation, a Bridge Plan Reading course, and a Construction Equipment utilization prototype. The first two are fully developed implementable tools that will be utilized by INDOT. These developments provide insight into how multimedia can be a useful tool for training and providing performance support to DOT employees. Other tools can be …

An Evaluation Of The Cost Effectiveness Of The Hoosier Helper Program And Framework For The Design Of Its Optimal System Configuration, Phase 1, Steven P. Latoski, Raktim Pal, Kumares C. Sinha

JTRP Technical Reports

This research provides a benefit-cost analysis for each of two distinct Hoosier Helper operating scenarios: daytime patrol and 24-hour patrol. The computation of agency cost involves an aggregation of equivalent annual investment cost, employee salaries and fringe benefit, overhead cost, and maintenance cost for Hoosier Helper. The following components comprise the estimation of Hoosier Helper benefits: non-recurrent congestion delay savings, secondary crash reduction, and vehicle operating cost savings. The results of an analysis of over two thousand evaluations from motorists assisted by Hoosier Helper are also presented.

Moment-Rotation Relationship For Unified Auto-Stress Design Of Continuous-Span Bridge Beam And Girders, Donald W. White, J. A. Ramirez, Karl E. Barth

JTRP Technical Reports

This report summarizes the development and trial application of simplified moment-rotation relationships for inelastic design of continuous-span beam and girder bridges. The research described within involves the execution of a reasonably comprehensive set of finite element parametric studies to fill in knowledge gaps in the available experimental data pertaining to the hogging moment-plastic rotation behavior of steel and composite steel-concrete bridge girders. Based on these studies, relationships have been developed for the moment-plastic rotation behavior at the pier sections in these types of bridges. The moment-rotation model is validated against available experimental data, several focused new experimental tests, and current …

Minimum Crushed Aggregate Requirements, Haiming Huang, Thomas D. White

JTRP Technical Reports

An accelerated pavement testing facility has been developed by Purdue University for the Indiana Department of Transportation. The test facility includes a test pit in which prototype scale pavement sections can be installed. The Accelerated Pavement Tester loading system has the capability of applying moving wheel loads to the test sections. An initial study utilizing the accelerated pavement test facility has been conducted at Purdue University to determine the minimum crushed aggregate requirements in asphalt mixtures in Indiana. This study addresses effects of various constituents of the asphalt mixture on pavement rutting. The factors included in this study are aggregate …

Freeway Incident Likelihood Prediction And Response Decision-Making, Samer Madanat, Hongyu Pan, Pen-Chi Liu, Hualiang Teng

JTRP Technical Reports

This research project consisted of two parts. The first part developed a set of real-time incident likelihood prediction models. The second part developed a freeway incident response decision-making methodology based on sequential hypothesis testing methods. The freeway incident likelihoods predicted by the real-time prediction models act as prior probabilities for the freeway incident response decision-making system. The products of this research project will be incorporated in the Advanced Traffic Management System that is being implemented on the Borman Expressway, a 16-mile segment of I-80 in northwest Indiana. The decision-making system can be used by traffic management personnel to assist in …

Prediction Models For Incident Clearance Time For Borman Expressway (Vol. 1; Vol. 2: 96/11), Samer Madanat, Ahmed Feroze

JTRP Technical Reports

This research consisted of two parts; this report is Volume 1 of 2 Volumes; Volume 2 is Report No. FHWA/IN/JHRP-9611. The first part developed a set of incident clearance time prediction models for the Borman Expressway. The second part consisted of modeling driver’s route choice behavior under the influence of advanced traveler information systems. Volume 1 of this report describes the incident clearance time prediction models for the Borman Expressway. The prediction of incident clearance time from these models can facilitate in efficient incident management and support traveler information systems. The products of this research project will be incorporated in …

Low-Threat Security Patches And Tools, Mohd A. Bashar, Ganesh Krishnan, Markus G. Kuhn, Eugene H. Spafford, Samuel S. Wagstaff Jr

Department of Computer Science Technical Reports

No abstract provided.

A Cscw Framework For Networked Multimodal Synthetic Environments, Chandrajit L. Bajaj, Fausto Berardini, Steven Cutchin, Raimund Merket

Department of Computer Science Technical Reports

No abstract provided.

Misplaced Trust: Kerberos 4 Session Keys, Bryn Dole, Steve Lodin, Eugene H. Spafford

Department of Computer Science Technical Reports

No abstract provided.

Safe Structural Conformance For Java, Konstantin Laufer, Gerald Baumgartner, Vincent F. Russo

Department of Computer Science Technical Reports

No abstract provided.

On The Street-Budget Allocation Changes: A Survey Of Atg Subscribers, Barbara Dean

Against the Grain

No abstract provided.

Agent Based Network Systems For Multi- Physics Problems, Tzvetan Drashansky, John R. Rice

Department of Computer Science Technical Reports

No abstract provided.

Finanzia: An Option Valuation Library, Konstantinos N. Pantazopoulos, Elias N. Houstis

Department of Computer Science Technical Reports

No abstract provided.

Parallel (//) Ellpack: A Problem Solving Environment For Pde Based Applications On Multicomputer Platforms, Elias N. Houstis, John R. Rice, S. Weerawarana, A. C. Catlin, P. Papachiou, M. Gaitatzes

Department of Computer Science Technical Reports

No abstract provided.

Reconciling Bilateral Trade Data For Use In Gtap, Mark Gehlhar

GTAP Technical Papers Archive

Bilateral trade flows are reported by both importers and exporters. Large discrepancies in reported import/export trade flows can be found when these two reports are compared.

The GTAP database requires consistency between the export flow and its corresponding import flow for all partner pairs. Therefore, bilateral trade data in its reported form cannot be directly used for GTAP. Various methods can be used to produce a consistent set of bilateral trade flows. However, achieving consistency alone does not necessarily provide credible trade flows.

Matrix balancing using trade totals published by international agencies is not appropriate since these totals are not …

Scene Change Detection For Video Database Management Systems-A Survey, Haitao Jiang, Abdelsalam (Sumi) Helal, Ahmed K. Elmagarmid, Anupam Joshi

Department of Computer Science Technical Reports

No abstract provided.

A Reference Model For Firewall Technology And Its Implications For Connection Signaling, J. Bryan Lyles, Christoph L. Scuba

Department of Computer Science Technical Reports

No abstract provided.

Parallel Reuse Methodologies For Elliptic Boundary Value Problems, S. Markus, Elias N. Houstis

Department of Computer Science Technical Reports

No abstract provided.

Between Pets And People: The Importance Of Animal Companionship, Alan M. Beck, Aaron Katcher

New Directions in the Human-Animal Bond

Pets play a greater role in our emotional and physical health than ever before, says the Purdue University professor who is co-author of his revised edition of Between Pets and People: The Importance of Animal Companionship. The book offers conclusive evidence from the two foremost researchers in the field, Alan M. Beck and Aaron H. Katcher, that animals have a significant influence on human life and health. Dealing with such varied topics as pet ownership and gender differences, the pet’s freedom from social taboos, and pets’ taking on roles of family members, the authors show that animal companionship affects, …

Performance Evaluation Of Mpi Implementations And Mpi Based Parallel Ellpack Solvers, S. Markus, S. B. Kim, K. Pantazopoulos, A. L. Ocken, Elias N. Houstis, S. Weerawarana, D. Maharry

Department of Computer Science Technical Reports

No abstract provided.

On Mobile Systems And Disconnected Browsing Of Distributed Information, Anupam Joshi, Sanjiva Weerawarana, Elias N. Houstis

Department of Computer Science Technical Reports

No abstract provided.

A Peak Finding Strategy For Multi- Dimensional Scalar Fields With Applications To X-Ray Crystallography, Calin R. Costian, Ioana M. Boier Martin, Dan C. Marinescu, Mikhail J. Atallah

Department of Computer Science Technical Reports

No abstract provided.

Op-Ed--Walking The Tightrope, Julie Pringle

Against the Grain

No abstract provided.

On The Street, Barbara Dean

Against the Grain

No abstract provided.

Development And Operation Of Buried Channel Charge Coupled Devices In 6h Silicon Carbide, Scott T. Sheppard, Michael R. Melloch, James A. Cooper Jr.

Department of Electrical and Computer Engineering Technical Reports

Silicon carbide is a wide bandgap semiconductor that is well suited for high power, high temperature electronic devices due to its remarkable electronic and thermal properties. Photosensitive devices in the 6H polytype of Sic have also been demonstrated, showing high sensitivity in ultraviolet wavelengths near 270 nm. Furthermore, the native oxide on Sic is silicon dioxide, meaning that SIC can be thermally oxidized to form a high quality gate dielectric, making metal-oxide-semiconductor (MOS) devices possible. These qualities make silicon carbide ideal for constructing UV sensitive CCD imagers. 'This work investigates the feasibility for developing imagers in Sic through the fabrication …

Multi-Agent Simulation Of Complex Heterogeneous Models In Scientific Computing, Anupam Joshi, Tzvetan Drashansky, John R. Rice, Sanjiva Weerawarana, Elias N. Houstis

Department of Computer Science Technical Reports

No abstract provided.