Digital (Scholarly) Publication

Round Table discussions of various topics related to Digital Scholarship, facilitated by faculty with experience in the table topic

Rough sets theory for travel demand analysis in Malaysia

This study integrates the rough sets theory into tourism demand analysis. Originated from the area of Artificial Intelligence, the rough sets theory was introduced to disclose important structures and to classify objects. The Rough Sets methodology provides definitions and methods for finding which attributes separates one class or classification from another. Based on this theory can propose a formal framework for the automated transformation of data into knowledge. This makes the rough sets approach a useful classification and pattern recognition technique. This study introduces a new rough sets approach for deriving rules from information table of tourist in Malaysia. The induced rules were able to forecast change in demand with certain accuracy

As Effective as Aspirin or Dark Chocolate: The Writing Center as Preventative Medicine

In the fight against heart disease, the popular media regularly report that an ounce of prevention— an aspirin a day, for example, or a piece of dark chocolate—goes a long way. The preventative approach applies equally well in the fight against underdeveloped writing skills among college students: the earlier inexperienced writers seek help, the better off they are likely to be. However, the medicinal value of a visit to the Writing Center is woefully underreported.University Writing Cente

Federal Road Charge Tax Administration Process

The gasoline tax is one of the primary sources of revenue for transportation infrastructure funding. However, recent revenue shortfalls due to a combination of inflation, fuel efficiency improvements, and vehicle electrification have led to discussions of alternative funding mechanisms such as the road user charge where drivers would pay fees by miles driven rather than gallons consumed. In this report, researchers investigate the institutional structure of the current gasoline tax at the federal level including historical changes, how the tax is collected, and how it is allocated and disbursed to fund infrastructure projects. In outlining the structure of the current gasoline tax, they identify key opportunities for a road user charge to be integrated into the current funding system. These include considerations for tax evasion, simplification of state level allocated disbursement formulas, re-allocation of funds, and designating spending for fuel-specific infrastructure.View the NCST Project Webpag

Ramsey Fiscal Policy and Endogenous Growth: A Comment

Recently, Park (2009, Economic Theory 39, 377--398) extended the Barro endogenous growth model (1990) by assuming that tax rate is optimally chosen by the government and labor supply is elastic. Park claimed to have proved the existence of multiple balanced growth paths that exhibit zero growth rate and local indeterminacy. In this comment, it is shown that his claim is incorrect. The model has a unique balanced growth path that may exhibit positive growth, and the model has no transitional dynamics.Fiscal Policy; Elastic Labor Supply; Growth

Tomography of small residual stresses

In this paper we study the inverse problem of determining the residual stress in Man's model using tomographic data. Theoretically, the tomographic data is obtained at zero approximation of geometrical optics for Man's residual stress model. For compressional waves, the inverse problem is equivalent to the problem of inverting the longitudinal ray transform of a symmetric tensor field. For shear waves, the inverse problem, after the linearization, leads to another integral geometry operator which is called the mixed ray transform. Under some restrictions on coefficients, we are able to prove the uniqueness results in these two cases

On the Fractional Landis Conjecture

In this paper we study a Landis-type conjecture for fractional Schr\"odinger equations of fractional power $s\in(0,1)$ with potentials. We discuss both the cases of differentiable and non-differentiable potentials. On the one hand, it turns out for \emph{differentiable} potentials with some a priori bounds, if a solution decays at a rate $e^{-|x|^{1+}}$, then this solution is trivial. On the other hand, for $s\in(1/4,1)$ and merely bounded \emph{non-differentiable} potentials, if a solution decays at a rate $e^{-|x|^\alpha}$ with $\alpha>4s/(4s-1)$, then this solution must again be trivial. Remark that when $s\to 1$, $4s/(4s-1)\to 4/3$ which is the optimal exponent for the standard Laplacian. For the case of non-differential potentials and $s\in(1/4,1)$, we also derive a quantitative estimate mimicking the classical result by Bourgain and Kenig.Comment: comments are welcom