Ambulatory assessment in neuropsychology : applications in multiple sclerosis research

Peer reviewedPostprin

Optimal Hour-Ahead Bidding in the Real-Time Electricity Market with Battery Storage using Approximate Dynamic Programming

There is growing interest in the use of grid-level storage to smooth variations in supply that are likely to arise with increased use of wind and solar energy. Energy arbitrage, the process of buying, storing, and selling electricity to exploit variations in electricity spot prices, is becoming an important way of paying for expensive investments into grid-level storage. Independent system operators such as the NYISO (New York Independent System Operator) require that battery storage operators place bids into an hour-ahead market (although settlements may occur in increments as small as 5 minutes, which is considered near "real-time"). The operator has to place these bids without knowing the energy level in the battery at the beginning of the hour, while simultaneously accounting for the value of leftover energy at the end of the hour. The problem is formulated as a dynamic program. We describe and employ a convergent approximate dynamic programming (ADP) algorithm that exploits monotonicity of the value function to find a revenue-generating bidding policy; using optimal benchmarks, we empirically show the computational benefits of the algorithm. Furthermore, we propose a distribution-free variant of the ADP algorithm that does not require any knowledge of the distribution of the price process (and makes no assumptions regarding a specific real-time price model). We demonstrate that a policy trained on historical real-time price data from the NYISO using this distribution-free approach is indeed effective.Comment: 28 pages, 11 figure

Two new Miocene limpets (Fissurellidae) from southern California, with notes on other fossil occurrences of the family in northwestern North America

Two new fissurellid limpets (Mollusca: Gastropoda: Fissurellidae), Fissurella? stantoni n. sp. and Scelidotoma aldersoni n. sp., are described from Miocene deposits in southern California. Fissurella? stantoni is described from a single specimen from the middle Miocene Topanga Canyon Formation in the Santa Monica Mountains, Los Angeles County, California. Scelidotoma aldersoni is described from two specimens, one from the middle Miocene Topanga Canyon Formation, and another provisionally (cf.) identified specimen of an internal mold from the middle Miocene “Vaqueros” Formation on Santa Cruz Island, Santa Barbara County, southern California. Other unreported fossil occurrences of Scelidotoma are a juvenile specimen attributed only to genus collected in the middle Eocene Crescent Formation in Washington state and S. bella from the Pliocene part of the San Diego Formation, San Diego County, California. The Scelidotoma occurrences extend the chronostratigraphic range of S. bella from the Holocene (living) to the middle Pliocene, and the range of the genus back to the middle Eocene

Currency Internationalization: The Case of the RMB

Currency internationalization could be considered as one of the primary facets of globalization in the modern world. Today, the US dollar accounts for nearly eighty-five percent of all global transactions, both in trade and finance. However, as China’s power has risen in the past few decades, many have pondered whether the Chinese currency, the RenMinBi (RMB), can internationalize. This study examines the literature on what components create an international currency. Then, we examine the characteristics of China’s financial markets and international relations to become familiar with the scholarly discourse surrounding China’s financial markets, international influence, and monetary stability. We then collect panel data from various sources including the World Bank, Heritage Foundation, and IMF from 2008 to 2018 to determine whether the RMB can internationalize. Using this data, we compose a few separate models based on whether a country has a Bilateral Swap Agreement (BSA) with China or if it has an RMB Clearing Center – which we consider to be symbols of increasing RMB internationalization. We hypothesize that China may be more likely to target higher-risk countries (i.e. more volatility, less stability) as stepping stones towards global usage of the RMB. The results of our study display One Belt One Road Membership to be the most impactful variable within our equation, followed by China’s business freedom index and trade with China divided by a certain country’s GDP. Using these findings, we offer the use of political analysis along with economic factors in the study of the currency internationalization as well as describe the limitations our study struggled with. It is hoped that this study can offer insight for currency analysts and the common investor as to how to investigate currency internationalization and the importance of including political insights in models of currency internationalization

Simulation and Analysis of a Drilling Fluid Using a Herschel-Bulkley Model

In the study, a drilling fluid with known properties is analyzed and simulated in the laminar regime through a pipe with dimensions of 1.5m in length and 0.02m in diameter. The purpose of the conducted analysis is to demonstrate the advantages of the Herschel-Bulkley model currently used in the oil and gas industry for analyzing non-Newtonian drilling fluids. For comparison, the analysis is also performed using more simple models for non-Newtonian fluids such as the Bingham Plastic model and the Power Law model and for a Newtonian fluid (water). In addition to analytical models, computations are conducted using commercial computational fluid dynamics software: Star-CCM+ and Solidworks Flow Simulation. The comparison of the model results are mainly considered in the pipe entrance region, because this flow area is of importance for drilling processes. The differences between the fluid models is largely apparent in this region

Five Recommendations to Law Schools Offering Legal Instruction over the Internet

This article addresses the emerging market for legal distance education. The market is being driven by recent changes in ABA regulations, as well as specialization in the curriculum, and expanding costs of traditional education. We are seeing the emergence of legal distance education consortiums, which offer a platform for the trading or selling of courses and programs. However, much skepticism remains about the ability of distance education technology to offer law schools and law students a sufficiently interactive pedagogy. In the words of Supreme Court Justice Ruth Bader Ginsburg legal education is a “shared enterprise, a genuine interactive endeavor” that “. . . inevitably looses something vital when students learn in isolation, even if they can engage in virtual interaction with peers and teachers.” This paper uses my experience as the Director of the University of Alabama’s successful LL.M in Taxation Program to advise law schools how to expand into distance education, while avoiding common pedagogical limitations and administrative problems. The first of five recommendations addresses what to offer and the remaining four offer advice on how to offer distance learning: 1) Offer programs more generously than courses. 2) Collaborate with other schools in offering courses but not when offering programs. 3) Use synchronous delivery of information, like videoconferencing, for the primary mode of instruction. 4) Use asynchronous forms of delivery to increase the level of interaction and support the primary, synchronous form. 5) Use relational marketing to retain and recruit distance education students. In addressing the issue of whether the internet is appropriate for law school instruction, this article contributes to that debate by presenting a model of the right way to offer legal distance education. Until the technology catches up with the traditional classroom, asynchronous forms like web-based discussion boards and streaming video should only be used to supplement a more interactive and synchronous primary mode of instruction like videoconferencing. This article also explains how resolve the potential difficulties that may arise when offering a videoconferencing course or program. The University of Alabama’s LL.M. in Tax is a good model for these propositions because it is the only program that I know of which uses over 10 remote classrooms and videoconferencing and asynchronous technologies to create face to face interactions with law students and professors from four different Southeastern states