Physical Sciences and Mathematics Commons^™

Generating Job Schedules For Vessel Operations In A Container Terminal, Thin Yin Leong, Hoong Chuin Lau

Research Collection School Of Computing and Information Systems

No abstract provided.

Continuous Medoid Queries Over Moving Objects, Stavros Papadopoulos, Dimitris Sacharidis, Kyriakos Mouratidis

Research Collection School Of Computing and Information Systems

In the k-medoid problem, given a dataset P, we are asked to choose kpoints in P as the medoids. The optimal medoid set minimizes the average Euclidean distance between the points in P and their closest medoid. Finding the optimal k medoids is NP hard, and existing algorithms aim at approximate answers, i.e., they compute medoids that achieve a small, yet not minimal, average distance. Similarly in this paper, we also aim at approximate solutions. We consider, however, the continuous version of the problem, where the points in P move and our task is to maintain the medoid set on-the-fly …

On Searching Continuous Nearest Neighbors In Wireless Data Broadcast Systems, Baihua Zheng, Wang-Chien Lee, Dik Lun Lee

Research Collection School Of Computing and Information Systems

A continuous nearest neighbor (CNN) search, which retrieves the nearest neighbors corresponding to every point in a given query line segment, is important for location-based services such as vehicular navigation and tourist guides. It is infeasible to answer a CNN search by issuing a traditional nearest neighbor query at every point of the line segment due to the large number of queries generated and the overhead on bandwidth. Algorithms have been proposed recently to support CNN search in the traditional client-server systems but not in the environment of wireless data broadcast, where uplink communication channels from mobile devices to the …

Is Interpersonal Trust A Necessary Condition For Organisational Learning?, Siu Loon Hoe

Research Collection School Of Computing and Information Systems

The organisational behaviour and management literature has devoted a lot attention on various factors affecting organisational learning. While there has been much work done to examine trust in promoting organisational learning, there is a lack of consensus on the specific type of trust involved. The purpose of this paper is to highlight the importance of interpersonal trust in promoting organisational learning and propose a research agenda to test the extent of interpersonal trust on organisational learning. This paper contributes to the existing organisational learning literature by specifying a specific form of trust, interpersonal trust, which promotes organisational learning and proposing …

Climate. Stern Review: The Economics Of Climate Change, Nicholas Stern

New England Journal of Public Policy

This chapter examines the increasingly serious impacts on people as the world warms. Climate change is a serious and urgent issue. The Earth has already warmed by 0.7°C since around 1900 and is committed to further warming over coming decades simply due to past emissions. On current trends, average global temperatures could rise by 2–3°C within the next fifty years or so, with several degrees more in the pipeline by the end of the century if emissions continue to grow. This chapter examines how the physical changes in climate . . . affect the essential components of lives and livelihoods …

Climate. A Period Of Consequence: Environmental Literature Of 2006, Shaun O'Connell

New England Journal of Public Policy

The author talks about the consequences of not respecting the climate and understanding global warming will cause ecocide and our own extinction.

Climate. Renewables: Old Problem, New Answers, Michael Eckhart

New England Journal of Public Policy

The article offers information on the first Agricultural Renewable Energy Forum to be held in New York on December 3, 2008.

Water. The Geopolitics Of Water, Paul Michael Wihbey, Ilan Berman

New England Journal of Public Policy

In the great geo-strategic game known as the Middle East, peace politics get much of the press and the attention of policy leaders. On occasion, oil takes center stage but often for the wrong reason (see, e.g., "The End of the Oil Era and the Price of Oil"). What is important to understand is that water is in fact the key strategic resource in the region and if you follow the flow of water, you'll follow the politics and policy machinations that lie at the heart of the Israeli-Syrian dialogue. IASPS Fellow in Strategy Paul Michael Wihbey co-authored an analysis …

Water. Global Water Outlook To 2025: Averting An Impending Crisis, Mark W. Rosegrant, Ximing Cai, Sarah A. Cline

New England Journal of Public Policy

IFPRI and IWMI's report uses computer modeling to project water demand and availability through to 2025 and predicts the likely impact of changes in water policy and investment, making specific recommendations for specific locations around the globe. The report argues that if current water policies continue, farmers will find it difficult to meet the world’s food needs. Hardest hit will be the world’s poorest people. The authors call for: International commitment to sustainable use of water, through appropriate policies and investments; Wider application of existing water saving technologies; The removal of inappropriate incentives and reform of institutions which hinder effective …

Water. World Water, A Crisis Of Global Governance?, Robert Weiner

New England Journal of Public Policy

In a global world, how can water, a necessary and increasingly scarce resource, be managed? We understand that water is a basic need. Do we also share the belief that water is a basic right? Does the international community share beliefs about water that may be the foundation of an international regime or system of global governance for the equitable implementation of global water policy? And finally, what international body or bodies might handle the disputes that arise as our population and need for water increase? The author tackles these questions and looks at models to guide us.

Oil. Changing Geopolitics Of Oil In Asia & The Usa, Jay Hein, John Clark, Robert Ebel, Dong Hyung Cha, Richard Lotspeich

New England Journal of Public Policy

One of the most important responsibilities the United States assumed following World War II was ensuring the stable flow of relatively inexpensive oil to the industrialized and industrializing countries of the world. A glance at a list of the top petroleum exporting countries shows that most of them are poor, have despotic governments, and experience frequent bouts of political instability and ideological extremism.

Oil. Seeking Peace In The Niger Delta: Oil, Natural Gas, And Other Vital Resources, Darren Kew, David L. Phillips

New England Journal of Public Policy

Nigeria’s oil-rich Niger Delta region has seen little benefit from the billions of dollars earned from oil over the last four decades, prompting a growing but disorganized insurgency across the region. Irresponsible oil companies and government officials have reduced the Niger Delta to one of the most polluted environments on earth. Corrupt local and national politicians, many of whom came to power through rigged elections, have colluded to manipulate ethnic divisions amid poverty to loot the region’s wealth. Consequently, the people of the Niger Delta have no formal political voice in Nigeria’s nascent democratic system, increasing the appeal of militias …

Oil. The Geopolitics Of Oil And Natural Gas, Alan Larson

New England Journal of Public Policy

Ensuring the reliability of global energy supplies will call for policies that both encourage the use of newer, cleaner energy technologies and address the political challenges posed by the world’s growing demand for oil and natural gas. U.S. policy seeks to encourage expansion and diversification of world energy supplies and to promote the transparency and democratic institutions that help energy-producing countries make the most productive use of their resources.

Fueling The Superpowers: Nexus Of Foreign Policy And Energy Security, Jack Blum

New England Journal of Public Policy

This article talks about the oil history and the role government and international politics has played in it.

Fueling The Superpowers: Potential Hazard For U.S.-China Relations, Travis Tanner

New England Journal of Public Policy

This article by Travis Tanner is taken from the proceedings of the EPIIC Symposium at Tufts University, February 2005

Pend Oreille River, Box Canyon Model: Model Scenario Simulations, Chris Berger, Robert Leslie Annear, Scott A. Wells

Civil and Environmental Engineering Faculty Publications and Presentations

The Washington Department of Ecology is interested in developing a temperature Total Maximum Daily Load (TMDL) allocation for the Pend Oreille River between the Albeni Falls Dam (U.S. Army Corps of Engineer’s reservoir) and Box Canyon Dam as shown in Figure 1. The Pend Oreille drainage basin is shown in Figure 2. An existing model of the Box Canyon reach was updated from CE-QUALW2 Version 3.0 to Version 3.5. This current research involves improving the calibration of the original model (1997 and 1998) and expanding the model using 2004 as an additional data set for calibration.

The use of field …

Using Box-Scores To Determine A Position's Contribution To Winning Basketball Games, Gilbert W. Fellingham, C. Shane Reese, Garritt L. Page

Faculty Publications

While it is generally recognized that the relative importance of different skills is not constant across different positions on a basketball team, quantification of the differences has not been well studied. 1163 box scores from games in the National Basketball Association during the 1996-97 season were used to study the relationship of skill performance by position and game outcome as measured by point differentials. A hierarchical Bayesian model was fit with individual players viewed as a draw from a population of players playing a particular position: point guard, shooting guard, small forward, power forward, center, and bench. Posterior distributions for …

The Role Of Geographic Information Systems Inwildlife Epidemiology: Models Of Chronic Wasting Disease In Colorado Mule Deer, Matthew L. Farnsworth, Jennifer A. Hoeting, N. Thompson Hobbs, Mary M. Conner, Kenneth P. Burnham, Lisa L. Wolfe, Elizabeth S. Williams, David M. Theobald, Michael W. Miller

Wildland Resources Faculty Publications

The authors present findings from two landscape epidemiology studies of chronic wasting disease (CWD) in northern Colorado mule deer (Odocoileus hemionus). First, the effects of human land use on disease prevalence were explored by formulating a set of models estimating CWD prevalence in relation to differences in human land use, sex and geographic location. Prevalence was higher in developed areas and among male deer suggesting that anthropogenic influences (changes in land use), differences in exposure risk between sexes and landscape-scaled heterogeneity are associated with CWD prevalence. The second study focused on identifying scales of mule deer movement and mixing that …

Continuous Monitoring Of Top-K Queries Over Sliding Windows, Kyriakos Mouratidis, Spiridon Bakiras, Dimitris Papadias

Research Collection School Of Computing and Information Systems

Given a dataset P and a preference function f, a top-k query retrieves the k tuples in P with the highest scores according to f. Even though the problem is well-studied in conventional databases, the existing methods are inapplicable to highly dynamic environments involving numerous long-running queries. This paper studies continuous monitoring of top-k queries over a fixed-size window W of the most recent data. The window size can be expressed either in terms of the number of active tuples or time units. We propose a general methodology for top-k monitoring that restricts processing to the sub-domains of the workspace …

Efficient Near-Duplicate Keyframe Retrieval With Visual Language Models, Xiao Wu, Wan-Lei Zhao, Chong-Wah Ngo

Research Collection School Of Computing and Information Systems

Near-duplicate keyframe retrieval is a critical task for video similarity measure, video threading and tracking. In this paper, instead of using expensive point-to-point matching on keypoints, we investigate the visual language models built on visual keywords to speed up the near-duplicate keyframe retrieval. The main idea is to estimate a visual language model on visual keywords for each keyframe and compare keyframes by the likelihood of their visual language models. Experiments on a subset of TRECVID-2004 video corpus show that visual language models built on visual keywords demonstrate promising performance for near-duplicate keyframe retrieval, which greatly speed up the retrieval …

Analyzing Feature Trajectories For Event Detection, Qi He, Kuiyu Chang, Ee Peng Lim

Research Collection School Of Computing and Information Systems

We consider the problem of analyzing word trajectories in both time and frequency domains, with the specific goal of identifying important and less-reported, periodic and aperiodic words. A set of words with identical trends can be grouped together to reconstruct an event in a completely un-supervised manner. The document frequency of each word across time is treated like a time series, where each element is the document frequency - inverse document frequency (DFIDF) score at one time point. In this paper, we 1) first applied spectral analysis to categorize features for different event characteristics: important and less-reported, periodic and aperiodic; …

Cross-Lingual Query Suggestion Using Query Logs Of Different Languages, Wei Gao, Cheng Niu, Jian-Yun Nie, Ming Zhou, Jian Hu, Kam-Fai Wong, Hsiao-Wuen Hon

Research Collection School Of Computing and Information Systems

Query suggestion aims to suggest relevant queries for a given query, which help users better specify their information needs. Previously, the suggested terms are mostly in the same language of the input query. In this paper, we extend it to cross-lingual query suggestion (CLQS): for a query in one language, we suggest similar or relevant queries in other languages. This is very important to scenarios of cross-language information retrieval (CLIR) and cross-lingual keyword bidding for search engine advertisement. Instead of relying on existing query translation technologies for CLQS, we present an effective means to map the input query of one …

Effect Of Regional Tectonic Setting On Local Fault Response To Episodes Of Volcanic Activity, Diana C. Roman, Philip Heron

Geology Faculty Publications

In this study we examine the interaction of tectonic and volcanically-generated stress fields, and their combined effect on patterns of volcanotectonic (VT) seismicity, by calculating Coulomb stress changes on local faults induced by a constant dike inflation event in a background stress field of systematically varying magnitude and orientation. We find that patterns of VT seismicity (earthquake locations and fault-plane solutions) resulting from dike inflation depend strongly on the relative strength and orientation of background tectonic stresses. Patterns of VT seismicity similar to those predicted by our Coulomb stress models have been observed at several recently active volcanoes, and appear …

Evaluation Of Ionic Liquids For Green Separation, Samuel Morton

Samuel A Morton

No abstract provided.

A Service Supporting Universal Access To Mobile Internet With Unit Of Information-Based Intelligent Content Adaptation, Stephen Yang, Jia Zhang, Norman Shao, Rick Chen

Jia Zhang

No abstract provided.

Web 2.0 Services For Identifying Communities Of Practice Through Social Networks, Stephen Yang, Jia Zhang, Irene Chen

Jia Zhang

No abstract provided.

A Taxonomy Of Finance Theories, Grace S. Thomson

Dr. Grace S. Thomson

Finance Theories Taxonomy This document presents a taxonomy of selected finance theories developed in past 5 decades by academics, practitioners and scholars in the United States, Europe, Asia and Latin America. A total of 14 theories and models are synthesized in this work, organized in five tables with the same structure: Theories of capital structure; capital budgeting and cost of equity; asset valuation, financial behavior and international finances. Each table contains theories organized alphabetically with an indication of its germinal or current character. The description of the theory is accompanied by current examples of empirical research that updates or contradicts …

Creating Database-Backed Library Web Pages Using Open Source Tools (Review), Frank J. Bove

Frank J. Bove

No abstract provided.

Lake Mead National Recreation Area Monitoring And Evaluation Of Sensitive Wildlife: Quarterly Progress Report, Period Ending June 30, 2007, Margaret N. Rees

Wildlife Monitoring

Project 1. Relict Leopard Frog Monitoring, Management, and Research

• Nocturnal surveys completed at all natural and translocation sites – the most striking finding was the lack of frogs observed at Rogers Springs and lower Blue Point despite repeated survey efforts.
• Relict leopard frog annual translocation effort completed – a total of 1957 tadpoles and juvenile frogs released at six translocation sites.
• Potential translocation sites within Gold Butte assessed during site visits in late March.
• Coordination and assistance provided to UNLV research efforts on habitat improvements at Blue Point and Rogers Springs, and with proposed FWS actions to construct a tadpole …

Interagency Science And Research: Quarterly Progress Report, Period Ending June 30, 2007, Margaret N. Rees

Interagency Science and Research Strategy

• Updated the SNAP Board on May 18 with a formal presentation.
• Began discussions with the Cultural Resources Team to integrate cultural resource science within in the Science and Research Strategy.
• Refined the science proposal peer-review process and developed a conceptual graphic to communicate the process with Science and Research Team members.
• Facilitated the selection of interagency goals, sub-goals, and related monitoring and science questions by Science and Research Team.
• Began planning of an all-agency resource management workshop intended to validate interagency science goals and sub-goals, and assist in the prioritization of questions.