Physical Sciences and Mathematics Commons^™

Parametric Family Of Sdes Driven By Lévy Noise, Suprio Bhar, Barun Sarkar

Communications on Stochastic Analysis

No abstract provided.

A Stochastic Integral By A Near-Martingale, Shinya Hibino, Hui-Hsiung Kuo, Kimiaki Saitô

Communications on Stochastic Analysis

No abstract provided.

Data On Ion Composition And X-Ray Diffraction Patterns Of Biosolids From Wastewater Treatment Plants In Lufkin And Nacogdoches, Texas, Usa, Kefa Karimu Onchoke, Christopher M. Franclemont, Paul W. Weatherford

Faculty Publications

The data presented in this article is related to the research article entitled, “Structural Characterization and Evaluation of Municipal Wastewater Sludge (Biosolids) from two Rural Wastewater Treatment Plants in East Texas, USA”, Onchoke, KK, Franclemont, C.M., Spectrochim. Acta A, In press[1]. The XRD profiles and composition of biosolids from wastewater treatment plant is presented. This study describes the composition of XRD crystalline phase patterns of the wastewater sludge. After the removal of the Ka2 peaks the d-spacing and hkl values were determined. In addition, the ion chromatographic profile of the seven anions (NO₃^-, NO_{2 …}

The Origin Of The Prime Number Theorem, Dominic Klyve

Number Theory

No abstract provided.

Seeing And Understanding Data, Beverly Wood, Charlotte Bolch

Statistics and Probability

No abstract provided.

Detection, Occurrence And Fate Of Emerging Contaminants In Agricultural Environments, Daniel D. Snow, David A. Cassada, Saptashati Biswas, Mohammedreza Shafieifini, Xu Li, Matteo D'Alessio, Laura Carter, J. Brett Sallach

Daugherty Water for Food Global Institute: Faculty Publications

A total of 75 papers published in 2017 were reviewed ranging from detailed descriptions of analytical methods, to fate and occurrence studies, to ecological effects and sampling techniques for a wide variety of emerging contaminants likely to occur in agricultural environments. New methods and studies on veterinary pharmaceuticals, steroids, antibiotic resistance genes, and engineered nanoparticles agricultural environments continue to expand our knowledge base on the occurrence and potential impacts of these compounds. This review is divided into the following sections: Introduction, Analytical Methods, Fate and Occurrence, Pharmaceutical Metabolites, Anthelmintics, Antibiotic Resistance Genes, and Engineered Nanomaterials.

Comparing Us And Russian Grading Scales, Olga Kosheleva, Vladik Kreinovich

Departmental Technical Reports (CS)

In the US, grades are usually based on comprehensive written exams: the larger the proportion of topic in which the student shows knowledge, the higher the student's grade. In contrast, in Russia, the grades are based on oral exams, and the bulk of the grade comes from a student answering questions of a few (usually, three) randomly selected topics. A natural question is: what is the relation between the two grading scales? It turns out that "excellent" and "good" grades means the same in both scales, while the US "satisfactory" level is higher than a similar Russian level.

Preferences (Partial Pre-Orders) On Complex Numbers -- In View Of Possible Use In Quantum Econometrics, Songsak Sriboonchitta, Vladik Kreinovich, Olga Kosheleva

Departmental Technical Reports (CS)

In economic application, it is desirable to find an optimal solution -- i.e., a solution which is preferable to any other possible solution. Traditionally, the state of an economic system has been described by real-valued quantities such as profit, unemployment level, etc. For such quantities, preferences correspond to natural order between real numbers: all things being equal, the more profit the better, and the smaller unemployment, the better. Lately, it turned out that to adequately describe economic phenomena, it is often convenient to use complex numbers. From this viewpoint, a natural question is: what are possible orders on complex numbers? …

Experimental Determination Of Mechanical Properties Is, In General, Np-Hard -- Unless We Measure Everything, Yan Wang, Oscar Galindo, Michael Baca, Jake Lasley, Vladik Kreinovich

Departmental Technical Reports (CS)

When forces are applied to different parts of a construction, they cause displacements. In practice, displacements are usually reasonably small. In this case, we can safely ignore quadratic and higher order terms in the corresponding dependence and assume that the forces linear depend on displacements. The coefficients of this linear dependence determine the mechanical properties of the construction and thus, need to be experimentally determined. In the ideal case, when we measure the forces and displacements at all possible locations, it is easy to find the corresponding coefficients: it is sufficient to solve the corresponding system of linear equations. In …

How To Describe Correlation In The Interval Case?, Carlos Jimenez, Francisco Zapata, Vladik Kreinovich

Departmental Technical Reports (CS)

In many areas of science and engineering, we want to change a difficult-to-directly-change quantity -- e.g., the economy's growth rate. Since we cannot directly change the desired quantity, we need to find easier-to-change auxiliary quantities that are correlated with the desired quantity -- in the sense that a change in the auxiliary quantity will cause the change in the desired quantity as well. How can we describe this intuitive notion of correlation in precise terms? The traditional notion of correlation comes from situations in which there are many independent factors causing the predictive model to differ from the actual values …

In The Discrete Case, Averaging Cannot Be Consistent, Olga Kosheleva, Vladik Kreinovich

Departmental Technical Reports (CS)

When we have two estimates of the same quantity, it is desirable to combine them into a single more accurate estimate. In the usual case of continuous quantities, a natural idea is to take the arithmetic average of the two estimates. If we have four estimates, then we can divide them into two pairs, average each pair, and then average the resulting averages. Arithmetic average is consistent in the sense that the result does not depend on how we divide the original four estimates into two pairs. For discrete quantities -- e.g., quantities described by integers -- the arithmetic average …

Probability-Based Approach Explains (And Even Improves) Heuristic Formulas Of Defuzzification, Christian Servin, Olga Kosheleva, Vladik Kreinovich

Departmental Technical Reports (CS)

Fuzzy techniques have been successfully used in many applications. However, often, formulas for processing fuzzy information are often heuristic: they lack a convincing justification, and thus, users are sometimes reluctant to use them. In this paper, we show that we can justify (and sometimes even improve) these methods if we use a probability-based approach.

Adaptive Groundwater Governance And The Challenges Of Policy Implementation In Idaho’S Eastern Snake Plain Aquifer Region, Margaret V. Du Bray, Morey Burnham, Katrina Running, Vicken Hillis

Human-Environment Systems Research Center Faculty Publications and Presentations

Globally, groundwater overdraft poses significant challenges to agricultural production. As a result, it is likely that new water management policies and governance arrangements will be needed to stop groundwater depletion and maintain agricultural viability. Drawing on interviews with state and non-state water managers and other water actors, this paper provides a study of a recent resource management agreement between surface water and groundwater irrigators in the Eastern Snake Plain Aquifer region of Idaho. Using adaptive governance as our descriptive framework, we examine how groundwater governance arrangements emerge and are applied to mitigate the impacts of groundwater overdraft. Our findings suggest …

Direct Insertion Of Nasa Airborne Snow Observatory-Derived Snow Depth Time Series Into The Isnobal Energy Balance Snow Model, Andrew R. Hedrick, Hans-Peter Marshall

CGISS Publications and Presentations

Accurately simulating the spatiotemporal distribution of mountain snow water equivalent improves estimates of available meltwater and benefits the water resource management community. In this paper we present the first integration of lidar-derived distributed snow depth data into a physics-based snow model using direct insertion. Over four winter seasons (2013–2016) the National Aeronautics and Space Administration/Jet Propulsion Laboratory (NASA/JPL) Airborne Snow Observatory (ASO) performed near-weekly lidar surveys throughout the snowmelt season to measure snow depth at high resolution over the Tuolumne River Basin above Hetch Hetchy Reservoir in the Sierra Nevada Mountains of California. The modeling component of the ASO program …

Probing The Rotational Velocity Of Galactic Wo Stars With Spectropolarimetry, H. F. Stevance, Richard Igance, P. A. Crowther, J. R. Maund, B. Davies, G. Rate

ETSU Faculty Works

Oxygen sequence Wolf-Rayet stars (WO) are thought to be the final evolution phase of some high-mass stars, as such they may be the progenitors of Type Ic SNe as well as potential progenitors of broad-lined Ic and long gamma-ray bursts. We present the first spectropolarimetric observations of the Galactic WO stars WR93b and WR102 obtained with FORS1 on the Very Large Telescope. We find no sign of a line effect, which could be expected if these stars were rapid rotators. We also place constraints on the amplitude of a potentially undetected line effect. This allows us to derive upper limits …

Σ-Ary, Minnesota State University Moorhead, Mathematics Department

Math Department Newsletters

No abstract provided.

Origins Of Ultradiffuse Galaxies In The Coma Cluster – Ii. Constraints From Their Stellar Populations, Anna Ferre-Mateu, Adebusola Alabi, Duncan Forbes, Aaron Romanowsky, Jean Brodie, Viraj Pandya, Ignacio Mart´In-Navarro, Sabine Bellstedt, Asher Wasserman, Maria Stone, Nobuhiro Okabe

Faculty Publications

In this second paper of the series we study, with new Keck/DEIMOS spectra, the stellar populations of seven spectroscopically confirmed ultradiffuse galaxies (UDGs) in the Coma cluster. We find intermediate to old ages (∼7 Gyr), low metallicities ([Z/H] ∼ −0.7 dex) and mostly supersolar abundance patterns ([Mg/Fe] ∼ 0.13 dex). These properties are similar to those of low-luminosity (dwarf) galaxies inhabiting the same area in the cluster and are mostly consistent with being the continuity of the stellar mass scaling relations of more massive galaxies. These UDGs’ star formation histories imply a relatively recent infall into the Coma cluster, consistent …

Academic Job Tips By Costanza Rampini - Phone Interview, Costanza Rampini

Faculty Publications, Environmental Studies

If you are on the academic job market, particularly in the fields of environmental studies/geography, I would be happy to share tips and questions from phone and on-campus interviews. I realize that Ph.D. advisors should provide this type of coaching, but they don't always do it...and some haven't been on the job market for a long time. It helps to speak to someone who just went through it...and has fresh notes from it! I was so much more prepared and had much more articulated answers by the time I had my 8th phone interview as compared to my first. Some …

A Spacetime Dpg Method For The Wave Equation In Multiple Dimensions, Jay Gopalakrishnan, Paulina Sepulveda

Portland Institute for Computational Science Publications

A spacetime discontinuous Petrov-Galerkin (DPG) method for the linear wave equation is presented. This method is based on a weak formulation that uses a broken graph space. The wellposedness of this formulation is established using a previously presented abstract framework. One of the main tasks in the verification of the conditions of this framework is proving a density result. This is done in detail for a simple domain in arbitrary dimensions. The DPG method based on the weak formulation is then studied theoretically and numerically. Error estimates and numerical results are presented for triangular, rectangular, tetrahedral, and hexahedral meshes of …

Santa Clara Magazine, Volume 60 Number 1, Fall 2018, Santa Clara University

Santa Clara Magazine

24 - FOUND IN TRANSLATION The Pulitzer for editorial cartooning recognizes the tale of two Syrian refugee families. Here’s who translated their story. By Tracy Seipel and Tina Vossugh.

26 - LEGENDS OF THE COURT A pair of Bronco hoops legends: Steve Nash ’96, welcome to the Basketball Hall of Fame! Kurt Rambis ’80, on big-time break-ins—and a fan club like no other. Words by Mark Purdy and Sam Farmer. Illustrations by Victor Juhasz.

34 - A JOURNEY THROUGH THE HOLY LAND Israel, from a hazy gray sea to the House of Bread to the Hill of the Skull. Learning …

Mixed Degree Number Field Computations, John W. Jones, David P. Roberts

Mathematics Publications

We present a method for computing complete lists of number fields in cases where the Galois group, as an abstract group, appears as a Galois group in smaller degree. We apply this method to find the 25 octic fields with Galois group PSL₂(7) and smallest absolute discriminant. We carry out a number of related computations, including determining the octic field with Galois group 2³:GL₃(2) of smallest absolute discriminant.

Chemistry Matters Fall 2018, Otterbein University Chemistry Department

Chemistry Matters Department Newsletter

In this issue:

Fall 2017 Sabbatical in Cambridge, UK/New Study Abroad Course in Chemistry/Students and Faculty Present at the 255th ACS National Meeting in New Orleans, March 2018/Exploring Biodiesel Chemistry in Multiple Lab Courses

Nanoparticles And Their Use In Cancer Imaging, Prevention And Treatment, George Gray

Chemistry & Biochemistry Student Projects

No abstract provided.

Tomatine And Furocoumarins: Toxins In Commonly Consumed Plants, Julia Noonan

Chemistry & Biochemistry Student Projects

No abstract provided.

X-Ray Swift Observations Of Sn 2018cow, L E. Rivera Sandoval, T J. Maccarone, A Corsi, P J. Brown, David Pooley, J C. Wheeler

Physics and Astronomy Faculty Research

Supernova (SN) 2018cow is an optical transient detected in the galaxy CGCG 137–068. It has been classified as a SN due to various characteristics in its optical spectra. The transient is also a bright X-ray source. We present results of the analysis of ∼ 62 ks of X-ray observations taken with the Neil Gehrels Swift Observatory over 27 days. We found a variable behavior in the 0 . 3 − 10 keV X-ray light curve of SN 2018cow, with variability timescales of days. The observed X-ray variability could be due to the interaction between the SN ejecta and a non-uniform …

Jupyter: Intro To Data Science - Lecture 6/7 Logistic Regression, Grant Long, Nyc Tech-In-Residence Corps

Open Educational Resources

Jupyter Lecture for the course "CSC 59970: Intro to Data Science" delivered at the City College of New York in Fall 2018 by Grant Long as part of the Tech-in-Residence Corps program.

Perpendicular Magnetic Anisotropy In Bulk And Thin-Film Cumnas For Antiferromagnetic Memory Applications, Ivan A. Zhuravlev, Anil Adhikari, K. D. Belashchenko

Kirill Belashchenko Publications

CuMnAs with perpendicular magnetic anisotropy is proposed as an active material for antiferromagnetic memory. Information can be stored in the antiferromagnetic domain state, while writing and readout can rely on the existence of surface magnetization. It is predicted, based on first-principles calculations, that easy-axis anisotropy can be achieved in bulk CuMnAs by substituting a few percent of As atoms by Ge, Si, Al, or B. This effect is attributed to the changing occupation of certain electronic bands near the Fermi level induced by hole doping. The calculated temperature dependence of the magnetic anisotropy does not exhibit any anomalies. Thin CuMnAs(001) …

Capturing The Fast-Food Landscape In England Using Large-Scale Network Analysis, Magda Baniukiewicz, Zachariah L. Dick, Philippe J. Giabbanelli

Computer Science Publications

Fast-food outlets play a significant role in the nutrition of British children who get more food from such shops than the school canteen. To reduce young people’s access to fast-food meals during the school day, many British cities are implementing zoning policies. For instance, cities can create buffers around schools, and some have used 200 meters buffers while others used 400 meters. But how close is too close? Using the road network is needed to precisely computing the distance between fast-food outlets (for policies limiting the concentration), or fast-food outlets and the closest school (for policies using buffers). This estimates …

The Planet, 2018, Fall, Emily Stout, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

Interrupted Time Series Design To Evaluate The Effect Of The Icd-9-Cm To Icd-10-Cm Coding Transition On Injury Hospitalization Trends, Svetla Slavova, Julia F. Costich, Huong Luu, Judith Fields, Barbara A. Gabella, Sergey Tarima, Terry L. Bunn

Biostatistics Faculty Publications

Background: Implementation of the International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) in the U.S. on October 1, 2015 was a significant policy change with the potential to affect established injury morbidity trends. This study used data from a single state to demonstrate 1) the use of a statistical method to estimate the effect of this coding transition on injury hospitalization trends, and 2) interpretation of significant changes in injury trends in the context of the structural and conceptual differences between ICD-9-CM and ICD-10-CM, the new ICD-10-CM-specific coding guidelines, and proposed ICD-10-CM-based framework for reporting of injuries by intent …