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2004

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Determination Of Indot Highway Construction Production Rates And Estimation Of Contract Times, Yi Jiang, Hongbo Wu Jan 2004

Determination Of Indot Highway Construction Production Rates And Estimation Of Contract Times, Yi Jiang, Hongbo Wu

JTRP Technical Reports

The duration of a highway construction project depends primarily on the quantity or magnitude of the construction work and the productivity of the construction crew. In addition, many other factors may also affect the construction duration, such as the type of construction, traffic features, location (urban or rural site), and weather conditions. When a state highway construction project contract is bid, a reasonable time must set and specified in the contract documents for completion of the contracted project. The time for contract completion (often called “contract time”) is estimated based on the average completion times of individual construction items within …

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Life And Cost Comparison Of Three Rehabilitation Techniques On I-65 Between Sr-2 And Sr-114, Sedat Gulen, John Weaver, Samy Noureldin Jan 2004

Life And Cost Comparison Of Three Rehabilitation Techniques On I-65 Between Sr-2 And Sr-114, Sedat Gulen, John Weaver, Samy Noureldin

JTRP Technical Reports

Construction of hot mix asphalt (HMA) overlays on top of old concrete pavements is the most common concrete pavement rehabilitation strategy. These overlays, however, are usually subject to reflection cracking related to the movement of the old concrete slab. In addition, these overlays may also be vulnerable to rutting when subjected to large traffic volumes of heavy trucks. Concrete overlays have the advantage of being rut resistant compared to HMA overlays. However, the current national experience of the performance of these overlays is still, relatively, limited compared to HMA overlays. In addition, doubts are often raised about the cost effectiveness …

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Performance Metrics For Freeway Sensors, Christos D. Achillides, Darcy M. Bullock Jan 2004

Performance Metrics For Freeway Sensors, Christos D. Achillides, Darcy M. Bullock

JTRP Technical Reports

Performance measures play a critical role in the operation of Intelligent Transportation Systems (ITS), because they provide feedback to the operators regarding system operations and efficiency. Traffic management systems use archived data, provided by various sensors, as a basis for describing normal conditions and predicting traffic conditions that may be expected at a particular time and place in the highway system. However, data quality is one of the principal concerns of archived ITS data users for the following reasons: 1) Manual inspection techniques are unable to detect significant errors because of the large volume of ITS data; 2) Only minimal …

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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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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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Regionalization Of Indiana Watersheds For Flood Flow Predictions Phase I: Studies In Regionalization Of Indiana Watersheds, A. Ramachandra Rao Jan 2004

Regionalization Of Indiana Watersheds For Flood Flow Predictions Phase I: Studies In Regionalization Of Indiana Watersheds, A. Ramachandra Rao

JTRP Technical Reports

The following five methods of regionalization of watersheds were tested with Indiana watershed and annual maximum flood data: (1) the L-moment based method, (2) the method based on hybrid cluster analysis, (3) the hybrid cluster method using rainfall data, (4) the fuzzy cluster method, and (5) the method based on artificial neural networks. The results of the L-moment based method and the hybrid cluster method with rainfall data were unacceptable because of the subjectivity involved with the former and the heterogeneity of the of the results obtained by the latter. The remaining three methods gave very similar results. The fuzzy …

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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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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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Remediation Of Soils And Ground Water Contaminated By Aromatic And Chlorinated Hydrocarbons And Metals, Inez Hua, P. Suresh Rao, Linda S. Lee, Barry K. Partridge, Ben Lawrence Jan 2004

Remediation Of Soils And Ground Water Contaminated By Aromatic And Chlorinated Hydrocarbons And Metals, Inez Hua, P. Suresh Rao, Linda S. Lee, Barry K. Partridge, Ben Lawrence

JTRP Technical Reports

Many of the Indiana Department of Transportation (INDOT) sites are contaminated with aromatic hydrocarbons and chlorinated solvents; these contaminants often occur in the form of light non-aqueous phase liquids (LNAPLs) or dense non-aqueous phase liquids (DNAPLs). Considerable effort has recently been focused on developing in-situ technologies for removing or destroying NAPL source zones, and several potentially viable methods have emerged, including in-situ chemical oxidation (ISCO). ISCO has become an attractive remediation option to managers at many contaminated sites. The three oxidants that are most often applied in-situ are hydrogen peroxide (H2O2) with iron catalysts, potassium permanganate (KMnO4), and ozone (O3). …

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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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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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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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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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Homesteading Rock: A Defense Of Free Access Under The General Mining Law Of 1872, Andrew P. Morriss, Roger E. Meiners, Andrew Dorchak Jan 2004

Homesteading Rock: A Defense Of Free Access Under The General Mining Law Of 1872, Andrew P. Morriss, Roger E. Meiners, Andrew Dorchak

Faculty Scholarship

The Mining Law of 1872 is one of the most reviled federal land laws, regularly drawing attacks as anachronistic, corporate welfare, a relic of pioneer days, and a source of major environmental problems. Born out of the experience of the nineteenth century mineral rushes, the Mining Law allows individuals to privatize both the surface estate and the mineral rights to public land containing minerals (with some exceptions) without requiring a significant payment to the public treasury for the land This "giveaway" aspect of the law draws the loudest protests. The authors argue that it is inappropriate to measure the net …

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Antitrust Analysis In Software Product Markets: A First Principles Approach, Andrew Chin Jan 2004

Antitrust Analysis In Software Product Markets: A First Principles Approach, Andrew Chin

Faculty Publications

No abstract provided.

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Compatibility Of A Western Systemic Approach For Handling Complex, Pluralist And Coercive Problems In Developing Countries: A Case Study Of Micro Satellite Development In Indonesia, Alexander Sudibyo Jan 2004

Compatibility Of A Western Systemic Approach For Handling Complex, Pluralist And Coercive Problems In Developing Countries: A Case Study Of Micro Satellite Development In Indonesia, Alexander Sudibyo

Theses: Doctorates and Masters

In this era of globalization, there has been much western investment in the eastern world, increasing the number of large projects financed by internal and foreign investments. It was thought a challenging proposition to investigate whether systemic approaches could be used in eastern developing countries that are in transition between Toffler’s first (agricultural focused) and second (industrial centered) waves of economic development.

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Factors Influencing Academics' Usage Of Electronic Journals, Margaret Krikorian Jan 2004

Factors Influencing Academics' Usage Of Electronic Journals, Margaret Krikorian

Theses: Doctorates and Masters

Through a survey of academics at Edith Cowan University, Australia, this study explored their usage of and attitudes towards academic electronic journals (EJs). The data provided insights into the way academics were using EJs at the time of the study and their thoughts on how they will use them in the future. The emergence of academics publishing their work in EJs is a fairly recent phenomenon compared to the established tradition of publishing in paper-based journals. Many publishers have also begun to replace paper journals with electronic ones and many librarians have begun incorporating EJs into their resource collections. Librarians …

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Resisting Aggression : Graphic Re-Presentations For Other Bodies, Camilla C. Loveridge Jan 2004

Resisting Aggression : Graphic Re-Presentations For Other Bodies, Camilla C. Loveridge

Theses: Doctorates and Masters

These chapters consider how art can provide a space for wider critical debate on established patriarchal power relations, which have operated in Western culture since the Enlightenment period. As a female artist, I want to explore the space in art of both the female body and the community body. This work seeks to position the female body within the "form" of her subjectivity, to destabilize patriarchal strongholds through the displacement of the traditionally aestheticised female "nude”. That is, I examine the (historicized) notion of a “subject” and the representation of an "object”, and understand the female "nude” as a representation …

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A Public Survey On Electroconvulsive Therapy, Serene P. Teh Jan 2004

A Public Survey On Electroconvulsive Therapy, Serene P. Teh

Theses: Doctorates and Masters

Health care professionals have debated the use and effects of electroconvulsive therapy (ECT) for more than 65 years. Yet, the attitudes towards, and knowledge about, ECT have not been thoroughly researched within the Australian community. There is also little empirical research documenting ECT recipient characteristics, the number of ECT administrations and the number of patients treated. This study aimed to develop an Australian perspective on: (1) the level of Public knowledge about and attitudes towards ECT and (2) the practice of ECT. The objectives were achieved through the development of questionnaires, and the distribution of these questionnaires to the public …

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Photonic Rf Signal Processors, Rong Zheng Jan 2004

Photonic Rf Signal Processors, Rong Zheng

Theses: Doctorates and Masters

The purpose of this thesis is to explore the emerging possibilities of processing radiofrequency (RF) or microwave signals in optical domain, which will be a key technology to implement next-generation mobile communication systems and future optical networks. Research activities include design and modelling of novel photonic architectures for processing and filtering of RF, microwave and millimeter wave signals of the above mentioned applications. Investigations especially focus on two basic functions and critical requirements in advanced RF systems, namely: • Interference mitigation and high Q tunable filters. • Arbitrary filter transfer function generation. The thesis begins with a review on several …

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An Examination Of Fathers' Satisfaction With The Legal System: Exploring The Concept In Relation To Fathers' Experience With The Family Law Court Of Western Australia, Janelle M. Hawes Jan 2004

An Examination Of Fathers' Satisfaction With The Legal System: Exploring The Concept In Relation To Fathers' Experience With The Family Law Court Of Western Australia, Janelle M. Hawes

Theses: Doctorates and Masters

Although the importance of fathers' post divorce contact with their children has been linked with a better outcome for the children and is valued by society, studies in the United States and Australia have suggested that up to 30 percent of fathers do not maintain regular contact with their children post divorce. To date, the literature has focused mainly on demographic variables and some personal characteristics of the father. An area, which has been neglected, is the influence of fathers' perception of legal proceedings and rules on their contact with their children post divorce. This study aimed to explore the …

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The Impact Of Corporatisation And Management Reform On The Role And Working Life Of Managers In An Australian Electricity Utility: A Triangulated Study, 1994-2002, Desmond E. Lehmann Jan 2004

The Impact Of Corporatisation And Management Reform On The Role And Working Life Of Managers In An Australian Electricity Utility: A Triangulated Study, 1994-2002, Desmond E. Lehmann

Theses: Doctorates and Masters

For decades electricity has been a critical source of energy for all major industries, nationally and internationally. In 2002 the Australian electricity supply industry had assets in excess of $86 billion and accounted for more than 1.4 percent of gross domestic product. It is a major employer with more than 33,000 people serving more than 8 million customers. This study explores the impact of corporatisation and management reform on the role and working life of managers within the broader context of this industry. It is an industry identified by academics, commentators and the business media over the past two decades …

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Perceived Likelihood Of Activity-Based Costing To Succeed In A University Setting, Nazmi Jarrar Jan 2004

Perceived Likelihood Of Activity-Based Costing To Succeed In A University Setting, Nazmi Jarrar

Theses: Doctorates and Masters

The study provides exploratory empirical evidence on the likelihood of Activity Based Costing (ABC) to succeed in a university setting and the association of this success with specific behavioral implementation factors. The study examined perceptions of Edith Cowan University's ABC users and preparers of the likelihood of the system to succeed in the University and their perceptions of eleven behavioral implementation factors identified by previous studies to have significant association with ABC implementation success. Results were analyzed so as to determine the significance of the correlation between the users' and preparers' perceptions of each of the eleven factors and their …

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Primitives And Design Of The Intelligent Pixel Multimedia Communicator, David K. Lucas Jan 2004

Primitives And Design Of The Intelligent Pixel Multimedia Communicator, David K. Lucas

Theses: Doctorates and Masters

Communication systems arc an ever more essential component of our modern global society. Mobile communications systems are still in a state of rapid advancement and growth. Technology is constantly evolving at a rapid pace in ever more diverse areas and the emerging mobile multimedia based communication systems offer new challenges for both current and future technologies. To realise the full potential of mobile multimedia communication systems there is a need to explore new options to solve some of the fundamental problems facing the technology. In particular, the complexity of such a system within an infrastructure framework that is inherently limited …

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Occupational Awareness Of Singapore Primary School Children, Joy S. Ang Jan 2004

Occupational Awareness Of Singapore Primary School Children, Joy S. Ang

Theses: Doctorates and Masters

The introduction of career guidance programmes in Singapore schools had tended to predominantly focus on secondary pupils. The lack of proactive career guidance programmes for the primary school had been due to the misguided belief that children in the primary school still have an extremely long way to go before they enter the workforce, and that their career development had not yet begun. Studies have shown that children have a natural tendency to form firm impressions of occupations early in life. This has resulted in their adopting certain occupations and discarding others before they have fully explored and understood the …

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Boerhaave's Syndrome: A Diagnostic Dilemma In The Emergency Room, Ab Zubairi, I Khalid, Saulat H. Fatimi, J Hussain, N Salahuddin Jan 2004

Boerhaave's Syndrome: A Diagnostic Dilemma In The Emergency Room, Ab Zubairi, I Khalid, Saulat H. Fatimi, J Hussain, N Salahuddin

Department of Medicine

Boerhaave's syndrome is a potential lethal condition which presents not only a diagnostic but also a therapeutic challenge. Errors in diagnosis are usually caused by unawareness of its varied and atypical presentations. All clinicians need to be aware of this lethal disease, its frequent unusual presentations and the importance of early diagnosis.

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The Benthic Ecology Of Marine Aggregate Deposits, Jamie Edward Robinson Jan 2004

The Benthic Ecology Of Marine Aggregate Deposits, Jamie Edward Robinson

School of Biological and Marine Sciences Theses

Macrobenthic assemblages and sedimentary conditions of five areas were described and compared; the role of abiotic factors in shaping benthic distributions was also examined. Two of the study sites were actively dredged at the time of sample collection and the effects of this aggregate extraction were investigated. It was concluded that trailer dredging (at the level intensity employed at these sites) was not associated with any significant disruption to benthic community structure, despite the differences in abiotic and biotic characteristics of the two dredged areas. A meta-analysis of findings from published dredging impact studies revealed a differential response to dredging …

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Biomarkers Of Chemical Impacts In The Freshwater Invertebrates Asellusaquaticus And Pacifastacus Leniusculus, Anne Jennie O'Neill Jan 2004

Biomarkers Of Chemical Impacts In The Freshwater Invertebrates Asellusaquaticus And Pacifastacus Leniusculus, Anne Jennie O'Neill

School of Biological and Marine Sciences Theses

The international scientific community has grown increasingly concerned that exposure to low levels of anthropogenic chemicals may disturb hormone function and/or sub lethal toxicity to other cells or organ systems in vertebrate and invertebrate species. This research programme was designed to develop, evaluate, and apply a range of biological and chemical indicators in the laboratory and/or field to assess the impact of sublethal toxicants including potential endocrine disaipting chemicals in the aquatic invertebrates, Asellus aquaticus (isopod) and Pacifasiacus leniiisciiius (decapod). Laboratory exposures of A. aquaticiis to environmentally realistic concentrations of known contaminants present within the river systems have demonstrated a …

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Ecology And Behaviour Of Postlarvae And Juveniles Of The Velvet Swimming Crab Necora Puber (L.), James Tony Lee Jan 2004

Ecology And Behaviour Of Postlarvae And Juveniles Of The Velvet Swimming Crab Necora Puber (L.), James Tony Lee

School of Biological and Marine Sciences Theses

Ecological studies of early benthic stages of brachyurans are rare for most of the species, leaving a gap in the understanding of processes regulating the recruitment to adult populations. The velvet swimming crab Necora puber (L. ) is a valuable commercial species where most of studies have been focused on the adult population. Little is known about the supply-side ecology and the post-settlement processes that affect the dynamics of the adult populations. The aims of the present study were to investigate the physical processes affecting the supply of recruits to the nearshore, to examine the processes associated with habitat selection …

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Variation In Essential Oil Content And Composition In Turkish Anise (Pimpinella Anisum L.) Populations*, Neşet Arslan, Bi̇lal Gürbüz, Ercüment O. Sarihan, Ali̇ Bayrak, Ahmet Gümüşçü Jan 2004

Variation In Essential Oil Content And Composition In Turkish Anise (Pimpinella Anisum L.) Populations*, Neşet Arslan, Bi̇lal Gürbüz, Ercüment O. Sarihan, Ali̇ Bayrak, Ahmet Gümüşçü

Turkish Journal of Agriculture and Forestry

This research was carried out at the University of Ankara, Faculty of Agriculture, Field Crops Department and the laboratories of the Food Engineering Department. Twenty-nine anise seed samples were collected from different locations in 9 producer provinces in Turkey and were used as the study materials in order to determine essential oil and essential oil compositions. According to the results, essential oil levels varied from 1.3% to 3.7%. The major component of the essential oil was trans-anethole. This compound ranged from 78.63% to 95.21%. Population 26 may be recommended for trans-anethole percentage and populations 8 and 22 for essential oil …

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