Digital Commons Network^™

Integrating Semantic Templates With Decision Tree For Image Semantic Learning, Ying Liu, Dengsheng Zhang, Guojun Lu, Ah-Hwee Tan

Research Collection School Of Computing and Information Systems

Decision tree (DT) has great potential in image semantic learning due to its simplicity in implementation and its robustness to incomplete and noisy data. Decision tree learning naturally requires the input attributes to be nominal (discrete). However, proper discretization of continuous-valued image features is a difficult task. In this paper, we present a decision tree based image semantic learning method, which avoids the difficult image feature discretization problem by making use of semantic template (ST) defined for each concept in our database. A ST is the representative feature of a concept, generated from the low-level features of a collection of …

The Philosophy Of Special Relativity: A Comparison Between Indian And Western Interpretations, Manoj Thulasidas

Research Collection School Of Computing and Information Systems

The Western philosophical phenomenalism could be treated as a kind of philosophical basis of the special theory of relativity. The perceptual limitations of our senses hold the key to the understanding of relativistic postulates. The specialness of the speed of light in our phenomenal space and time is more a matter of our perceptual apparatus, than an input postulate to the special theory of relativity. The author believes that the parallels among the phenomenological, Western spiritual and the Eastern Advaita interpretations of special relativity point to an exciting possibility of unifying the Eastern and Western schools of thought to some …

Searching And Tagging: Two Sides Of The Same Coin?, Qiaozhu Mei, Jing Jiang, Hang Su, Chengxiang Zhai

Research Collection School Of Computing and Information Systems

This paper presents the duality hypothesis of search and tagging, two important behaviors of web users. The hypothesis states that if a user views a document D in the search results for query Q, the user would tend to assign document $D$ a tag identical to or similar to Q; similarly, if a user tags a document D with a tag T, the user would tend to view document D if it is in the search results obtained using T as a query. We formalize this hypothesis with a unified probabilistic model for search and tagging, and show that empirical …

Real-Time Supply Chain Control Via Multi-Agent Adjustable Autonomy, Hoong Chuin Lau, Lucas Agussurja, Ramesh Thangarajoo

Research Collection School Of Computing and Information Systems

Real-time supply chain management in a rapidly changing environment requires reactive and dynamic collaboration among participating entities. In this work, we model supply chain as a multi-agent system where agents are subject to an adjustable autonomy. The autonomy of an agent refers to its capability to make and influence decisions within a multi-agent system. Adjustable autonomy means changing the autonomy of the agents during runtime as a response to changes in the environment. In the context of a supply chain, different entities will have different autonomy levels and objective functions as the environment changes, and the goal is to design …

Solving The Teacher Assignment-Course Scheduling Problem By A Hybrid Algorithm, Aldy Gunawan, Kien Ming Ng, Kim Leng Poh

Research Collection School Of Computing and Information Systems

This paper presents a hybrid algorithm for solving atimetabling problem, which is commonly encountered in manyuniversities. The problem combines both teacher assignment andcourse scheduling problems simultaneously, and is presented as amathematical programming model. However, this problem becomesintractable and it is unlikely that a proven optimal solution can beobtained by an integer programming approach, especially for largeproblem instances. A hybrid algorithm that combines an integerprogramming approach, a greedy heuristic and a modified simulatedannealing algorithm collaboratively is proposed to solve the problem.Several randomly generated data sets of sizes comparable to that ofan institution in Indonesia are solved using the proposed algorithm.Computational results …

Iterated Weaker-Than-Weak Dominance, Shih-Fen Cheng, Michael P. Wellman

Research Collection School Of Computing and Information Systems

We introduce a weakening of standard gametheoretic δ-dominance conditions, called dominance, which enables more aggressive pruning of candidate strategies at the cost of solution accuracy. Equilibria of a game obtained by eliminating a δ-dominated strategy are guaranteed to be approximate equilibria of the original game, with degree of approximation bounded by the dominance parameter. We can apply elimination of δ-dominated strategies iteratively, but the for which a strategy may be eliminated depends on prior eliminations. We discuss implications of this order independence, and propose greedy heuristics for determining a sequence of eliminations to reduce the game as far as possible …

สัมภาษณ์พิเศษ : ดร. อานนท์ สนิทวงศ์ ณ อยุธยา "ภาวะโลกร้อน" มหันตภัยใกล้ตัว, สิริพร แก่นสียา

Thai Environment

No abstract provided.

Hutgyi-สาละวิน, ผ่องศรี จั่นท้าว

Thai Environment

No abstract provided.

Supramolecular Usefulness Of Hexamethylenetetramine, Philias Daka

Masters Theses

Because non-covalent contacts are important to the design and construction of materials with functional applications, efforts that seek to uncover chemical features responsible for the assembly of multimolecular arrays hold current interest. The building-block approach is one strategy that has been successfully employed for the construction of molecular assemblies. By designing molecular components with complementary functional groups, the construction of predictable supramolecular motifs is possible. Although various modes of molecular alignment have been generated using this strategy, the extension of low dimensional motifs (discrete and 1-D patterns) to 2- and 3-D patterns remain a current challenge.

Counterfeiting Truth: Statistical Reporting On The Basis Of Trust, David M. Levy, Sandra J. Peart

Jepson School of Leadership Studies articles, book chapters and other publications

Semantics and game theory offer modern approaches to very old problems.¹ David Lewis introduced game theoretic concepts into the study of language in his examination of conventions.² In this chapter we study the language of a specific sort of conventions: statistical estimators. Such estimators have the important property of being both well-defined mathematical objects and devices that form the basis of factual claims asserted and, perhaps, believed by rational agents.³ The convention we analyze allows econometric reporting to proceed on the basis of trust.⁴ In contrast with Lewis, we shall demonstrate that such a convention is …

Counterfeiting Truth: Statistical Reporting On The Basis Of Trust, Sandra J. Peart, David M. Levy

Jepson School of Leadership Studies articles, book chapters and other publications

There are two parts of our chapter. First, we review Adam Smith's argument that the evolution of monetary institutions is tied up in the problem of detecting deceitful metal offered in exchange. Smith points to no such comparable institution by which deceitful policy advocacy is detected and severely punished.⁵ Yet his recommendation for caution in the evaluation of policy advocacy points to the caution that routinely prevailed in monetary matters before public safeguards evolved to make the metallic content of the medium of exchange transparent and to preserve its quality. Second, we tum to a different sort of deceit, …

A Framework For Assessing Scientific Arguments: Gaps, Relevance And Integrated Evidence, Carl F. Cranor

Journal of Law and Policy

No abstract provided.

Judgement For Judges: What Traditional Statistics Don't Tell You About Causal Claims, Steven N. Goodman

Journal of Law and Policy

No abstract provided.

Determining Disease Causality From Experimental Toxicology Studies, Ronald L. Melnick, John R. Bucher

Journal of Law and Policy

No abstract provided.

The Nature And Necessity Of Scientific Judgement, Douglas L. Weed

Journal of Law and Policy

No abstract provided.

Studies Directed Toward The Diastereocontrolled Synthesis Of Heritol, Prashanth K. Padakanti

Masters Theses

3,3-Dichloro-4-indanyloxetan-2-one was synthesized and its double ring expansion in the presence of the Lewis acid magnesium bromide was investigated, which resulted only in a trans-fused butyrolactone in 25% yield. Of the natural products containing butyrolactones fused to 6-membered rings, trans is more common. This method of double ring expansion can be applied to the synthesis of the natural product heritol, whose core structure contains the butenolide moiety. A model study of the double ring expansion was performed with 3-chloro-4-indanyl-3-methyloxetane-2-one B6, but this study was not completed.

In order to apply the double ring expansion methodology to synthesize heritol, the preparation …

Communication And Authenticity: Transformations Of The Self In The Digital Age, John Dowd

Masters Theses

Through an examination of disembodied forms of communication and technological discourse, this project explores the concepts of authenticity and its implications for communication research. Situated within phenomenological notions of embodiment, authenticity can serve as an important tool for doing rhetorical criticism. It provides an ethical component to criticism that is sorely lacking within many social scientific approaches to the study of human communication, which operate under the guise of objectivity. As authenticity, subjectivity, and embodiment are inescapably connected and as all three provide the foundation for this project, chapter one provides a working definition of each. It is argued that …

Rational Discounting For Regulatory Analysis, W. Kip Viscusi

Vanderbilt Law School Faculty Publications

This Article examines the economic basis for what is termed "rational discounting," which entails full recognition of policy effects over time and exponential discounting at a riskless rate of return. Policies often cannot be ranked unambiguously in terms of their present or future orientation. Both failure to discount and preferential intergenerational discounting generate inconsistencies and economic anomalies. Office of Management and Budget (OMB) discounting guidelines now stipulate more reasonable discount rates than earlier guidelines, but err in permitting open-ended preferential rates for intergenerational effects. This Article presents a methodology for monetizing the value of statistical life for people of different …

What Are We Comparing In Comparative Negligence?, Paul H. Edelman

Vanderbilt Law School Faculty Publications

In tort cases, comparative negligence now is the dominant method for determining damages. Under that method, the jury apportions fault among the parties and assesses damages in proportion to the relative fault assessment. Comparative negligence contrasts with contributory negligence, where any fault attributed to the plaintiff bars recovery. Although comparative negligence routinely governs in tort cases, its most basic feature remains uncertain: how to apportion fault. In this Article, I demonstrate that at least two different methods exist, and that these methods lead to radically different outcomes. I create a framework, building on a traditional model from law and economics, …

The Most Dangerous Justice Rides Into The Sunset, Paul H. Edelman, Jim Chen

Vanderbilt Law School Faculty Publications

In this essay, our third and last in a series, we employ our previously developed techniques to measure the power of the Justices in the Rehnquist Court over its full 11 year run. Once again, Justice Kennedy rises to the top of our rankings, as he had done earlier. Our methods identify Justices Souter, Breyer and Ginsburg as being notable either for their influence or lack thereof. In addition, we rejoin the debate on the connection between being the median justice and being the most powerful one. We question whether even the most sophisticated methods of finding the median justice …

Six Degrees Of Cass Sunstein, Paul H. Edelman, Tracey E. George

Vanderbilt Law School Faculty Publications

Degrees of separation is a concept that is intuitive and appealing in popular culture as well as academic discourse: It tells us something about the connectedness of a particular field. It also reveals paths of influence and access. Paul Erdős was the Kevin Bacon of his field - math - coauthoring with a large number of scholars from many institutions and across subfields. Moreover, his work was highly cited and important. Mathematicians talk about their Erdős number (i.e., numbers of degrees of separation) as a sign of their connection to the hub of mathematics: An Erdős number of 2 means …

An Environmental Complexity Analysis For Robot-Environment System Design, Gang Yang

Theses and Dissertations

Recently, researchers have begun to investigate intelligent environments for robot applications. In this work, a robot and its work environment can be considered to be an integrated system. Currently, such robot-environment systems are designed on an ad-hoc basis, with the final performance of the system greatly dependent on the experience and preferences of the designer. This dissertation investigates a way to improve on this situation by looking at the complexity of an environment from the perspective of a robot. The objective of this research is to develop a method to evaluate environmental complexity and then use this information to help …

Computational Models To Predict The Inhibition Of Cytochrome P450 3a4 By Selected Natural Compounds, Sushma Thotakura

Theses and Dissertations

Cytochrome P450 3A4 (CYP3A4) plays a pivotal role in the metabolism of xenobiotics. Methylenedioxobenzene containing natural products have been shown to inhibit CYP3A4. Given that these compounds are widely distributed in nature there is a strong potential for drug interaction with many plants used for dietary or medicinal purposes. In this research we have developed two different computational models (Comparative Molecular Field Model and Artificial Neural Network Model) to assist in the identification of potentially strong inhibitors that could be further studied for potential inhibitory effects. These models were used to screen for the CYP3A4 inhibitory effects of 100 naturally …

Differentiating Between Women In Hard And Soft Science And Engineering Disciplines, Amanda Gail Camp

Theses and Dissertations

The intent of the study was to investigate how women in hard (engineering, mathematics, computer science, physical science) and soft (social, psychological, life sciences) sciences differ from each other among a set of variables known to influence educational attainment and to evaluate how well Weidman's undergraduate socialization model explains higher education's influence on women in science and engineering fields. Using the Beginning Postsecondary Students Longitudinal Study (1996-2001), descriptive discriminant analysis and multivariate analysis of variance were used to identify differences among the women, and structural equation modeling was used to evaluate Weidman's model. Results indicated that women who went into …

Evaluation And Characterization Of Some Biologically Active Coumarin Derived Sulfonamides, Harish Gosike

Theses and Dissertations

Sulfonamide drugs discovered in the 1930's were the first effective chemotherapeutic agents to be employed for the prevention and cure of bacterial infections in humans. Bacterial resistance to these drugs over the years has led to the development of new variety of sulfonamide derivatives. Recently Chohan et al. synthesized a series of coumarin derived sulfonamides and their chemical structures have been established. In this report, we present some microbiological studies to establish the antibacterial characters of these compounds. In order to establish their chemical structure-biological activity relationship, electrochemical and spectroscopic studies have been conducted. Antibacterial studies conducted on these compounds …

Identification Of Potential Organic Contributors In Carbonaceous Aerosols: Enhanced Uv Absorption Spectra, Anand Mangu

Theses and Dissertations

Direct aerosol climate effects include light scattering and absorption that present the largest uncertainties in the assessment of radiative forcing. To estimate the overall effect of aerosols on climate the relative amounts of scattering and absorption must be known. Determination of aerosol UV-absorption spectra is the primary focus of this thesis research. Aerosol samples were collected in Mexico City in 2003 and 2006 as a part of Mexico City Metropolitan Area field study and also at Little Rock. UV-visible absorption spectra of these aerosol samples have been obtained by using an integrating sphere coupled to a UV-visible spectrometer and compared …

Load Distribution And Channel Assignment In Ieee 802.11 Wireless Local Area Networks, Mohamad Haidar

Theses and Dissertations

Recent growth in Wireless Local Area Network (WLAN) deployment has generated considerable interest in load management and channel assignment among network designers. WLAN has become a major component of the modern telecommunication infrastructure. Load management and Channel assignment are among the critical aspects that face WLAN deployments. Well planned WLAN service environments require a network designed to provide not only radio coverage but also better load distribution and less interference across the service area, which in turn improves the Quality of Service (QoS). In this dissertation, a novel approach to the WLAN load distribution and channel assignment is proposed that …

Mining Frequent Patterns From Sequences: Theory, Algorithm, Implementation, And Performance, Markus Petteri Turkia

Theses and Dissertations

Mining frequent patterns from sequences is an important data mining problem which has direct applications in many areas. In this thesis, we make three contributions to the state-of-the-art of the sequential frequent pattern mining. First of all, we propose a fast pattern-growth mining algorithm using a novel sequence database representation called First-Occurrence Linked WAP-tree (FLWAP-tree). The pattern-growth mining algorithm using the Pre-Order Linked WAP-tree (PLWAP-tree) was reported in the literature to be faster than other algorithms. We show that our pattern-growth using our FLWAP-tree outperforms the PLWAP-tree mining significantly and consistently. Secondly, we extend the pattern-growth algorithm with partial enumeration …

Synthesis And Characterization Of Highly Conductive Polypyrrole And Polypyrrole/Lignosulfonate/Graphite Composites, Aopeau Imvittaya

Theses and Dissertations

Polypyrrole (PPy) is one of the conductive polymers frequently used in commercial applications, mainly due to its long-term stability and the possibility of forming homopolymers or composites with optimal properties. Polypyrroles were prepared by the chemical polymerization of pyrrole using various methods. The effects of several parameters such as oxidant, dopant type, additives and reaction conditions on the properties of PPy were investigated. In addition, PPy/graphite composites were prepared because graphite is highly conductive and effectively incorporated into the polymer matrix during the polymerization. The amount of graphite in the composite was varied to determine the maximimum conductivity achievable in …

The Abc's Of Early Intervention: Assessing The Arkansas Better Chance For School Success Pre -School Program, Lisa Walker Todd

Theses and Dissertations

Early intervention programs have long been associated with increased cognitive benefits for disadvantaged poverty children. The Arkansas Better Chance for School Success Pre-school Program (ABCSS) was implemented in select counties in Arkansas as an early intervention strategy for Arkansas' poverty children. The core rationale behind the implementation of the Arkansas Better Chance for School Success Pre-school Program was the belief that it is much easier not to be left behind if you do not start behind. The study assessed the Arkansas Better Chance for School Success Pre-school Program on the impact of sustained benefits on third grade children who previously …