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Validation Of Methods For Tuning System Charge Predictions In Unitary Equipment, Bo Shen, James E. Braun, Eckhard A. Groll Jan 2004

Validation Of Methods For Tuning System Charge Predictions In Unitary Equipment, Bo Shen, James E. Braun, Eckhard A. Groll

International Refrigeration and Air Conditioning Conference

No abstract provided.

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Refrigerant Charge And Ambient Temperature Effects On The Refrigeration Cycle Of A Small Capacity Food Freezer, Marco F. Torchio, Paolo Anglesio Jan 2004

Refrigerant Charge And Ambient Temperature Effects On The Refrigeration Cycle Of A Small Capacity Food Freezer, Marco F. Torchio, Paolo Anglesio

International Refrigeration and Air Conditioning Conference

No abstract provided.

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A New Installation For Part Load Testing Of Air To Water Single Stage Chillers And Heat Pumps, Philippe Riviere, Nicolas Flach Malaspina, Jean Marc Lebreton Jan 2004

A New Installation For Part Load Testing Of Air To Water Single Stage Chillers And Heat Pumps, Philippe Riviere, Nicolas Flach Malaspina, Jean Marc Lebreton

International Refrigeration and Air Conditioning Conference

No abstract provided.

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The Effects Of Non-Condensable Gases In Household Refrigerators, Luca Cecchinato, Maurizio Dell'eva, Ezio Fornasieri, Massimo Marcer, Claudio Zilio Jan 2004

The Effects Of Non-Condensable Gases In Household Refrigerators, Luca Cecchinato, Maurizio Dell'eva, Ezio Fornasieri, Massimo Marcer, Claudio Zilio

International Refrigeration and Air Conditioning Conference

No abstract provided.

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A Moving-Boundary Model Of A Centrifugal Chiller System, Satyam Bendapudi, James E. Braun, Eckhard A. Groll Jan 2004

A Moving-Boundary Model Of A Centrifugal Chiller System, Satyam Bendapudi, James E. Braun, Eckhard A. Groll

International Refrigeration and Air Conditioning Conference

No abstract provided.

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Q-Pod: Deployable And Scalable End System Support For Enabling Qos In Legacy Enterprise Systems, Asad Khan Awan, Kihong Park Jan 2004

Q-Pod: Deployable And Scalable End System Support For Enabling Qos In Legacy Enterprise Systems, Asad Khan Awan, Kihong Park

Department of Computer Science Technical Reports

No abstract provided.

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Unitary Air Conditioner Field Performance, Todd M. Rossi Jan 2004

Unitary Air Conditioner Field Performance, Todd M. Rossi

International Refrigeration and Air Conditioning Conference

No abstract provided.

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Deriving Backwriting From Writing Back, Rebecca Moore Howard Jan 2004

Deriving Backwriting From Writing Back, Rebecca Moore Howard

The Writing Center Journal

No abstract provided.

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Censoring What Tutors' Clothing "Says": First Amendment Rights/Writes Within Tutorial Space, Margaret Weaver Jan 2004

Censoring What Tutors' Clothing "Says": First Amendment Rights/Writes Within Tutorial Space, Margaret Weaver

The Writing Center Journal

No abstract provided.

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Continuation Of Research To Determine The Effectiveness Of Its On Borman Expressway, Robert Bertram Jacko, William H. Schneider, Ahmed S. Soliman, Barry K. Partridge Jan 2004

Continuation Of Research To Determine The Effectiveness Of Its On Borman Expressway, Robert Bertram Jacko, William H. Schneider, Ahmed S. Soliman, Barry K. Partridge

JTRP Technical Reports

This study is a continuation and the final phase of the SPR-2338 project that involves monitoring the ambient air quality levels adjacent to the Borman Expressway. The purpose of this phase was to classify the traffic conditions along the Borman Expressway in terms of ambient air quality levels. The duration of the phase was from April 1, 2002 to April 30, 2004. The study has shown that, in a close proximity to the Borman Expressway, air quality levels mirror the dynamic nature of traffic along the Borman, despite being surrounded by major industrial stationary sources. Therefore, a descriptive model was …

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An Analysis Of Cost Overruns And Time Delays Of Indot Projects, Claire Bordat, Bob G. Mccullouch, Samuel Labi, Kumares C. Sinha Jan 2004

An Analysis Of Cost Overruns And Time Delays Of Indot Projects, Claire Bordat, Bob G. Mccullouch, Samuel Labi, Kumares C. Sinha

JTRP Technical Reports

A commonality among state Departments of Transportation is the inability to complete projects on time and within budget. This project assessed the extent of the problem of cost overruns, time delays, and change orders associated with Indiana Department of Transportation (INDOT) construction projects, identified the reasons for such problems, and finally developed a set of recommendations aimed at their future reduction. For comparison purposes, data from other states were collected and studied using a questionnaire instrument. The analysis of the cost overrun, time delay and change order data was done using an array of statistical methods. The literature review and …

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The Development Of A Highway Tort Liability Management System For The Indiana Department Of Transportation, Thomas Giraud, Vorasett Chovichien, Samuel -1962 Labi, Kumares C. Sinha Jan 2004

The Development Of A Highway Tort Liability Management System For The Indiana Department Of Transportation, Thomas Giraud, Vorasett Chovichien, Samuel -1962 Labi, Kumares C. Sinha

JTRP Technical Reports

The loss of states’ sovereign immunity in the 1970’s opened the gates for highway-related tort liability suits against the states. Between January 2001 and September 2002, the State of Indiana investigated and settled hundreds of highwayrelated tort cases, involving several millions of dollars in taxpayers’ money. There is a need to assess the frequency of occurrence and financial impacts of such claims, and to examine how the growth of highway tort claims could be arrested. This study aimed at reviewing existing highway tort liability risk management practices at other states for possible applicability to INDOT, developing a framework for managing …

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Using Imaging Technology To Evaluate Highway Safety, Praprut Songchitruksa, Andrzej P. Tarko Jan 2004

Using Imaging Technology To Evaluate Highway Safety, Praprut Songchitruksa, Andrzej P. Tarko

JTRP Technical Reports

Crash-based safety analysis is set back by several shortcomings such as randomness and rarity of crash occurrences, lack of timeliness, and inconsistency in crash reporting. Non-crash-based safety analysis has been around for more than three decades but its potential was limited due to a difficulty in the data collection and the evaluation. Recent advancement in digital videos and image detection technology renewed our interest in facilitating the data collection and improving the evaluation method. Two image detection systems for the measurement of traffic characteristics were evaluated: (a) a commercial video detection system and (b) proprietary image processing software. The measurement …

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Using Precast Concrete Panels For Pavement Construction In Indiana, Luh M. Chang, Yu-Tzu Chen, Sangwook Lee Jan 2004

Using Precast Concrete Panels For Pavement Construction In Indiana, Luh M. Chang, Yu-Tzu Chen, Sangwook Lee

JTRP Technical Reports

The closure of roadways for new pavement, overlays, or removal and replacement applications constantly causes traffic congestions. To minimize the effects of traffic congestions, the study is intended to assess the feasibility of using Precsat Concrete Pavement (PCP) method in INDOT pavement construction. The research investigated the state-of-the-art of the PCP methods lately developed in United States. The conventional concrete pavement methods such as Portland Cement Concrete Pavement (PCCP) including Jointed Plain Concrete Pavement (JPCP), Jointed Reinforced Concrete Pavement (JRCP), and Continuously Reinforced Concrete Pavement (CRCP) were reviewed and compared with PCP methods. With the speedy construction and lower user …

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Upgrading The Indot Pavement Friction Testing Program, Shuo Li, Samy Noureldin, Karen Zhu Jan 2004

Upgrading The Indot Pavement Friction Testing Program, Shuo Li, Samy Noureldin, Karen Zhu

JTRP Technical Reports

This study investigated many important issues associate with pavement surface friction testing, in particular using the smooth tire. This study utilized 3-D FEM program to investigate the fundamental friction phenomenon in light of energy dissipation during friction process. It was demonstrated that the pavement friction depends on many factors such as test tire, test speed, surrounding conditions, pavement surface texture, and pavement type. A great amount of friction data has been collected so as to investigate variations involved in pavement friction measurements. System variations depend on the feature of pavement surface. The standard deviations due to system errors are usually …

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Limit States Design Of Deep Foundations, Kevin Christopher Foye, Grace Abou Jaoude, Rodrigo Salgado Jan 2004

Limit States Design Of Deep Foundations, Kevin Christopher Foye, Grace Abou Jaoude, Rodrigo Salgado

JTRP Technical Reports

Load and Resistance Factor Design (LRFD) shows promise as a viable alternative to the present working stress design (WSD) approach to foundation design. The key improvements of LRFD over the traditional Working Stress Design (WSD) are the ability to provide a more consistent level of reliability and the possibility of accounting for load and resistance uncertainties separately. In order for foundation design to be consistent with current structural design practice, the use of the same loads, load factors and load combinations would be required. In this study, we review the load factors presented in various LRFD Codes from the US, …

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Mechanical Behavior Of Non-Textbook Soils (Literature Review), J. Antonio H. Carraro, Rodrigo Salgado Jan 2004

Mechanical Behavior Of Non-Textbook Soils (Literature Review), J. Antonio H. Carraro, Rodrigo Salgado

JTRP Technical Reports

Traditionally, soil mechanics has focused on the behavior of two distinct types of geomaterials: clean sands and pure clays. Under the application of external loads, these two types of geomaterials represent and are conveniently associated with two extreme types of soil responses: drained and undrained behavior. The drained behavior of clean sands and the undrained behavior of pure clays have been covered extensively in most soil mechanics textbooks. In order to provide some insight into the mechanical response of additional materials, a literature review on the mechanical behavior of “non-textbook” soils (i.e. soils other than clean sands and pure clays) …

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Methodology For The Development Of A Highway Asset Management System For Indiana, Zongzhi Li, Kumares C. Sinha Jan 2004

Methodology For The Development Of A Highway Asset Management System For Indiana, Zongzhi Li, Kumares C. Sinha

JTRP Technical Reports

Highway asset management is a systematic process that aims to preserve, expand, and operate highway assets in the most cost-effective manner. It is an analytical tool that facilitates organized, logical, and integrated decision-making in asset management practice. This study proposes a methodology for the development of a highway asset management system that addresses asset valuation, performance modeling, marginal benefit analysis, and multicriteria decision-making, including tradeoff analysis as well as project selection and programming. While most existing management systems deal with individual physical highway assets or system usage only under certainty or risk, this research focuses on the management of an …

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Evaluation Of Indot Construction Smoothness Specifications, Terhi K. Pellinen, Shao-Fan Chou Jan 2004

Evaluation Of Indot Construction Smoothness Specifications, Terhi K. Pellinen, Shao-Fan Chou

JTRP Technical Reports

Currently, Indiana Department of Transportation (INDOT) is using the California Profilograph as the standard measuring device in its smoothness specifications. The output derived from the profilograph is called Profile Index (PI). PI represents the total accumulated deviations of the profilograph output traces beyond a tolerance zone (blanking band). At present, INDOT is using 0.2-inch blanking band to evaluate the profile traces, which has raised some concerns because some small unpleasant surface irregularities are covered by the blanking band. The major objective of this study was to develop a rational method for interpreting profilograph traces using 0.0-inch blanking band (zero tolerance) …

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Evaluation Of Surface (Top Down) Longitudinal Wheel Path Cracking, Terhi K. Pellinen, Geoff Rowe, Kalapi Biswas Jan 2004

Evaluation Of Surface (Top Down) Longitudinal Wheel Path Cracking, Terhi K. Pellinen, Geoff Rowe, Kalapi Biswas

JTRP Technical Reports

The research involved evaluating three surface cracked pavements during 2002 and 2003. A 500m section of I-65 North of Lafayette was chosen as the first site (designated as Site 1), an I-65 section in downtown Indianapolis was the second site (Site 2), and US-421 in Madison was the third site (Site 3). Site 1 had 11-year old pavement, Site 2 had 12-year old pavement and Site 3 had 4.5-year old pavement. All these sites exhibited longitudinal wheel path cracking which was later identified as top-down cracking. All sites had excellent structural capacity indicating that the top-down cracking was confined in …

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Evaluation Procedures For Deploying Spread Spectrum Interconnect, J. V. Krogmeier Jan 2004

Evaluation Procedures For Deploying Spread Spectrum Interconnect, J. V. Krogmeier

JTRP Technical Reports

This purpose of this project was the design and construction of a testbed network for experimentation with spread spectrum communications in the 900 and 2400 MHz band. The current network consists of five fixed nodes and two portable nodes. Of the fixed nodes, three are located in the Purdue MSEE building, one is located in the Harold L. Michael Traffic Operations Laboratory, and one is located in the experimental traffic signal cabinet at the intersection of Stadium and Northwestern Avenues in West Lafayette. The testbed has been used to evaluate spread spectrum radio technologies from vendors Microwave Data Systems, GINA, …

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Evaluation, Analysis, And Enhancement Of Indot's Utility Accommodation Policy, Carlos A. Arboleda, Hyung Seok Jeong, Dulcy M. Abraham, Sanjiv B. Gokhale Jan 2004

Evaluation, Analysis, And Enhancement Of Indot's Utility Accommodation Policy, Carlos A. Arboleda, Hyung Seok Jeong, Dulcy M. Abraham, Sanjiv B. Gokhale

JTRP Technical Reports

The Utility Accommodation Policy (UAP) is a collection of the regulations and practices to control the utility occupancy of all public highway rights-of-way under jurisdiction of the different States. UAPs not only help to regulate the installation of new utilities and the renovation of the currently installed by construction companies, subcontractors, and utilities companies, but also provide a framework to develop and preserve a safe roadside and to minimize possible interferences and impairment to the highway, its structures, appearance, safe operation, construction and maintenance. According to FHWA (2002) “Present FHWA regulations, policies, and practices dealing with utility relocation and accommodation …

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Hazard Elimination Program - Manual On Improving Safety Of Indiana Road Intersections And Sections; Volume 1: Research Report And Volume 2: Guidelines For Highway Safety Improvements In Indiana, Andrzej P. Tarko, Mayank Kanodia Jan 2004

Hazard Elimination Program - Manual On Improving Safety Of Indiana Road Intersections And Sections; Volume 1: Research Report And Volume 2: Guidelines For Highway Safety Improvements In Indiana, Andrzej P. Tarko, Mayank Kanodia

JTRP Technical Reports

The Hazard Elimination Program (HEP) is the section of the Safety Management System that focuses on road improvements and includes analytical tools for identification of safety problems and their remedies. This research project reviews the results of the past research for Indiana and other states and to develop guidelines that present a set of tools for hazard elimination through road improvements. It also includes developing regression models for predicting crash frequencies at all-way and two-way stop-controlled intersections. Negative Binomial regression was used to develop separate models for two-way and all-way stop controlled intersections. These models predict typical frequency of all …

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Predicting Traffic Conditions At Indiana Signalized Intersections, Rafael I. Perez-Cartagena, Andrzej P. Tarko Jan 2004

Predicting Traffic Conditions At Indiana Signalized Intersections, Rafael I. Perez-Cartagena, Andrzej P. Tarko

JTRP Technical Reports

All of the methods for predicting traffic conditions at intersections provide default values for saturation flow rates and their adjustment factors, lost times, and other parameters. Because these parameters are difficult to measure, the use of the default values is a common practice and it can cause significant bias in the results if the actual local values are different. The main objective of this research was to investigate the variability of capacity and delay parameters used in engineering tools for predicting delays and for determining level of service (LOS) at signalized intersections in Indiana. The variability investigation produced Indiana default …

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Reconciling Speed Limits With Design Speeds, Alberto Miguel Figueroa-Medina, Andrzej P. Tarko Jan 2004

Reconciling Speed Limits With Design Speeds, Alberto Miguel Figueroa-Medina, Andrzej P. Tarko

JTRP Technical Reports

In recent years, context-sensitive highway design has been promoted to ensure that designers consider the environmental, scenic, aesthetic, historic, community, and preservation aspects of the road. Context-sensitive design may lead to situations where the current design standards cannot be met because of restricting local conditions. Indiana has road sections designed and built some time ago. In a considerable number of roads with the statutory limit of 55 mph (90 km/h), the road geometry does not meet the current standards. At individual intersections and on curves, advisory speeds are posted together with warning signs. Although this solution increases the safety of …

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Quality Control Procedures For Weigh-In-Motion Data, Andrew P. Nichols, Darcy M. Bullock Jan 2004

Quality Control Procedures For Weigh-In-Motion Data, Andrew P. Nichols, Darcy M. Bullock

JTRP Technical Reports

For the past two decades, weigh-in-motion (WIM) sensors have been used in the United States to collect vehicle weight data for designing pavements and monitoring their performance. The use of these sensors is now being expanded for enforcement purposes to provide virtual weigh stations for screening vehicles in traffic streams for overweight violations. A study found that static weigh stations in Indiana were effective for identifying safety violations, but ineffective for identifying overweight vehicles. It was also determined that the alternative approach to identifying overweight vehicles using virtual weigh stations requires a high level of WIM data accuracy and reliability …

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Safety Of Intersections On High-Speed Road Segments With Superelevation, Peter T. Savolainen, Andrzej P. Tarko Jan 2004

Safety Of Intersections On High-Speed Road Segments With Superelevation, Peter T. Savolainen, Andrzej P. Tarko

JTRP Technical Reports

In recent years, the State of Indiana has built a number of intersections where one or both of the roads are located on curves. The AASHTO Policy on Geometric Design of Highways and Streets recommends that in such cases “the alignment should be as straight and the gradient as flat as practical.” This wording, consistent with Part V of the Indiana Design Manual, allows for the design of intersections on curves if other solutions prove to be too expensive. Several of these intersections have raised safety concerns and led to expensive corrective measures. Due to these safety and economic issues, …

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Simplified Load Distribution Factor For Use In Lrfd Design, Elisa D. Sotelino, Judy Liu, Wonseok Chung, Kitjapat Phuvoravan Jan 2004

Simplified Load Distribution Factor For Use In Lrfd Design, Elisa D. Sotelino, Judy Liu, Wonseok Chung, Kitjapat Phuvoravan

JTRP Technical Reports

The “S-over” equation for the load distribution factor (LDF) was first introduced in the 1930s in the AASHTO Standard. Finite element studies, however, have shown it to be unsafe in some cases and too conservative in others. AASHTO LRFD 1994 introduced a new LDF equation as a result of the NCHRP 12-26 project. This equation is based on parametric studies and finite element analyses (FEA). It is considered to be a good representation of bridge behavior. However, this equation involves a longitudinal stiffness parameter, which is not initially known in design. Thus, an iterative procedure is required to correctly determine …

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Information Labs: The Next Best Thing In Information Literacy Instruction?, Michael Fosmire Dec 2003

Information Labs: The Next Best Thing In Information Literacy Instruction?, Michael Fosmire

Libraries Research Publications

As higher education transforms itself from a lecture-dominated enterprise to one that encourages active engagement by the students with the curriculum, librarians have a new avenue for inserting themselves into the educational mission of the university. At Purdue University, the libraries have been successful integrating problem-based learning activities into curricula in several departments. One of the most successful ventures at Purdue has been in the Earth and Atmospheric Sciences, where, in addition to our regular instructional presence, we have created ‘information labs’ in two courses so far, including the first year survey course taken by all EAS majors. The information …

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Efficient Execution Of Sliding-Window Queries Over Data Streams, Moustafa A. Hammad, Walid G. Aref, Michael J. Franklin, Mohammed P. Mokbel, Ahmed K. Elmagarmid Dec 2003

Efficient Execution Of Sliding-Window Queries Over Data Streams, Moustafa A. Hammad, Walid G. Aref, Michael J. Franklin, Mohammed P. Mokbel, Ahmed K. Elmagarmid

Department of Computer Science Technical Reports

No abstract provided.

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