cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Optimization of Junction and Bias Parameters in readout of Phase Qubit
Creators: name: Zandi, Hesam
name: Safaei, Shabnam
name: Khorasani, Sina
name: Fardmanesh, Mehdi
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The exact numerical solution of the nonlinear Ginzburg-Landau equation for Josephson junctions is obtained, from which the nontrivial current density and effective potential of the Josephson junction are accurately found. Tunneling probabilities of the calculated bound states in the resulting potential well are computed. The effects of junction and bias parameters such as thickness of the insulating barrier, cross sectional area, bias current and magnetic field are fully investigated using a successive perturbation approach. We define and compute figures of merit for achieving optimal operation of phase qubits and measurement of states. Particularly, it is predicted that Josephson junctions with thicker barriers yield better performance in measurement of the phase qubit. The proportion of other parameters is also studied and discussed for the right situation of the setup. Results are in complete agreement with reported experimental data.
title: Lake Evaporation: A Model Study
Creators: name: Amayreh, Jumah
Publisher: name: Utah State University
Year: 1995

description: Reliable evaporation data are an essential requirement in any water and/or energy budget studies. This includes operation and management of both urban and agricultural water resources. Evaporation from large, open water surfaces such as lakes and reservoirs may influence many agricultural and irrigation decisions. In this study evaporation from Bear Lake in the states of Idaho and Utah was measured using advanced research instruments (Bowen Ratio and Eddy Correlation). Actual over-lake evaporation and weather data measurements were used to understand the mechanism of evaporation in the lake, determine lake-related parameters (such as roughness lengths, heat storage, net radiation, etc.), and examine and evaluate existing lake evaporation methods. This enabled the development of a modified and flexible model incorporating the tested methods for hourly and daily best estimates of lake evaporation using nearby simple land-based weather data and, if available, remotely sensed data.
Average evaporation from Bear Lake was about 2 mm/day during the summer season (March-October) of this two-year (1993-1994) study. This value reflects the large amount of energy consumed in heating the water body of the lake. Moreover, evaporation from the lake was not directly related to solar radiation. This observation was clear during nighttime when the evaporation continued with almost the same rate as daytime evaporation. This explains the vital role of heat storage in the lake as the main driving energy for evaporation during nighttime and daytime cloudy sky conditions.
When comparing over-lake and nearby land-based weather parameters, land-based wind speed was the only weather parameter that had a significant difference of about 50% lower than over-lake measurements. other weather parameters were quite similar.
The study showed that evaporation from the lake can be accurately estimated using Penman-type equations if related parameters such as net radiation, heat storage, and aerodynamic effect are evaluated properly to reflect conditions over the lake. Using other methods may lead to unacceptable errors.
On the minimum dilatation of pseudo-Anosov homeomorphisms on surfaces of small genus
Creators: name: Lanneau, Erwan
name: Thiffeault, Jean-Luc
Publisher: name: arXiv
Year: 2009
Subjects: subject: Geometric Topology (math.GT)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37D40 (Primary) 37E30 (Secondary)

description: We find the minimum dilatation of pseudo-Anosov homeomorphisms that stabilize an orientable foliation on surfaces of genus three, four, or five, and provide a lower bound for genus six to eight. Our technique also simplifies Cho and Ham's proof of the least dilatation of pseudo-Anosov homeomorphisms on a genus two surface. For genus g=2 to 5, the mimimum dilatation is the smallest Salem number for polynomials of degree 2g.
description: 30 pages, 6 figures. amsart style. To appear in Annales de l'Institut Fourier. Added one reference in v3.
Sketchbook 05
Creators: name: Ceska, Oldriska
Publisher: name: University of Victoria Libraries
Year: 2024
Subjects: subject: Plants
valueUri: http://id.worldcat.org/fast/1065823
subject: Biology
valueUri: http://id.worldcat.org/fast/832383
subject: Botanical illustration
valueUri: http://id.worldcat.org/fast/836840
subject: Mushrooms--Research
valueUri: http://id.worldcat.org/fast/1030247
subject: Mushrooms
valueUri: http://id.worldcat.org/fast/1030235
subject: Art
valueUri: http://id.worldcat.org/fast/815177
subject: Botany
valueUri: http://id.worldcat.org/fast/836869
subject: Mushrooms--Identification
valueUri: http://id.worldcat.org/fast/1030238
subject: Fungi
valueUri: http://id.worldcat.org/fast/936289

description: Field journal of mycofloristic (mushroom) surveys with detailed illustrations by Oluna Ceska. Each specimen has been labelled by name, as well as by the location, date, and substrate where it was found. Additional observations include physical characteristics, smell, size, and spore size. The research focuses primarily on the southern Vancouver island region. Many of the studied specimens are from Observatory Hill, Victoria. Additional research locations include the Gulf Islands, Haida Gwaii, the BC mainland, the Yukon, Washington, and Oregon. Locations visited in the journal include: Observatory Hill; Royal Roads; Tod Inlet; Devonian Park; East Sooke Park; Texada Island; Olympics, WA; UVic campus; Mt. Brenton; Mt. Washington; Blueberry Flats; Muir Creek; Galliano Island; Forks, WA; Jocelyn Hill; Victoria; Mesachie Lake; SVIMs Show; Metchosin; Salt Spring Island; San Juan Ridge; Port Renfrew.
title: Ontogenetic Habitat Shift of Juvenile Bear Lake Sculpin (Cottus extensus)
Creators: name: Ruzycki, James R.
Publisher: name: Utah State University
Year: 1995

description: Bear Lake sculpin (Cottus extensus) exhibited an ontogenetic habitat shift during their first year of life. Soon after hatching in the littoral zone, the fry swam to the surface where they dispersed throughout the lake. Most juveniles that initially settled in the profundal zone returned to the littoral zone during their first summer. Patterns in the daily growth increments of otoliths confirmed the history of habitat residence and the individual size at the habitat switch. We used this habitat shift to test a μ/g model incorporating a growth rate-mortality risk trade-off. A trade-off occurred in the littoral zone because both growth rate and mortality risk were greater in this habitat. Given initial profundal residence, the directed movement of juveniles to the more profitable littoral zone was consistent with model predictions. Contrary to model predictions, juvenile sculpin initially occupied both habitats and switched habitats at a wide range of sizes. lack of a discrete switch size may have resulted, in part, from the lack of a strong trade-off or from an inability of fish to respond facultatively to environmental variables at the large spatial scale of this system.
Redundancy, Deduction Schemes, and Minimum-Size Bases for Association Rules
Creators: name: Balcazar, Jose L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: I.2.3; H.2.8; I.2.4; G.2.3; F.4.1

description: Association rules are among the most widely employed data analysis methods in the field of Data Mining. An association rule is a form of partial implication between two sets of binary variables. In the most common approach, association rules are parameterized by a lower bound on their confidence, which is the empirical conditional probability of their consequent given the antecedent, and/or by some other parameter bounds such as "support" or deviation from independence. We study here notions of redundancy among association rules from a fundamental perspective. We see each transaction in a dataset as an interpretation (or model) in the propositional logic sense, and consider existing notions of redundancy, that is, of logical entailment, among association rules, of the form "any dataset in which this first rule holds must obey also that second rule, therefore the second is redundant". We discuss several existing alternative definitions of redundancy between association rules and provide new characterizations and relationships among them. We show that the main alternatives we discuss correspond actually to just two variants, which differ in the treatment of full-confidence implications. For each of these two notions of redundancy, we provide a sound and complete deduction calculus, and we show how to construct complete bases (that is, axiomatizations) of absolutely minimum size in terms of the number of rules. We explore finally an approach to redundancy with respect to several association rules, and fully characterize its simplest case of two partial premises.
description: LMCS accepted paper
Integrating Jackknife into the Theil-Sen Estimator in Multiple Linear Regression Model
Creators: name: Zaman, Tolga
name: Alakuş, Kamil
Publisher: name: REVSTAT-Statistical Journal
Year: 2023

description: In this study, we provide Theil-Sen parameter estimators, which are in multiple linear regression model based on a spatial median, to be examined by the jackknife method. To obtain the proposed estimator, apply the jackknife to a multivariate Theil-Sen estimator (MTSE) from Dang et al. estimators, who proved that the MTSE estimator is asymptotically normal. Robustness, efficiency, and non-normality of the proposed estimator is tested with simulation studies. As a result, the proposed estimator is shown to be robust, consistent, and more efficient in multiple linear regression models with arbitrary error distributions. Also, it is seen that the proposed estimator reduces the effects of outliers even more and gives more reliable results. So, it is clearly observed that the proposed estimator improves the outcome of the multivariate Theil-Sen estimator. In addition, we support with the aid of numerical examples to these results.
description: REVSTAT-Statistical Journal, Vol. 21 No. 1 (2023): REVSTAT-Statistical Journal
Citizen participation in slected planning programs : a case study of New Westminster
Creators: name: Firmalino, Tito Castro
Publisher: name: University of British Columbia
Year: 2011

description: This thesis investigates citizen participation in the planning process in a Canadian city. The city selected for this research is New Westminster. It was chosen principally because of its relatively small size, its accessibility to the researcher, and the researcher’s familiarity with the conditions therein. The study is focussed on two aspects of citizen participation. The first aspect deals with the factors that motivate citizens to participate actively in government affairs. It is hypothesized that possession of wealth and high social status and the intense feeling of need for a project or service are motivational forces that can influence the citizen toward greater or more active participation. The second aspect concerns the style and scope of participation which are analyzed along the three levels of choice in the planning process, described by Paul Davldoff and Thomas A. Reiner in their article which appeared in the Journal of the American Institute of Planners in May, 1962. These three levels of choice are: (1) determination of goals or ends, (2) selection of alternatives to achieve the desired ends, and (3) effectuation. The method used in this study is a combination of the case study approach and a survey of selected leaders and citizens on welfare. The period reviewed covered about a decade, from 1957 to 1967. The background of two of the case studies started as early as 1952. The three case studies involved the following problems: (1) the downtown parking ramp. (2) the Queensborough drainage and sewage disposal problem, and (3) the redevelopment of Area 4. The findings show that the citizens most active in contacting City officials for the support or implementation of projects were generally the property owners, businessmen, and leaders of private organizations. The intense feeling of need, for the project was indicated by the sustained, effort and persistent demand of the leaders of certain associations for the implementation of such project over a long period of time. The pattern of citizen participation in the affairs of the City was mostly through, groups and organizations. These organizations aggregated the demands of like-minded citizens who discussed problems in meetings and arrived at a common understanding as to what course to take. The case studies show that the citizens actively participated in all stages of the planning process of the programs in which they were involved.
Geometric combinatorial algebras: cyclohedron and simplex
Creators: name: Forcey, Stefan
name: Springfield, Derriell
Publisher: name: arXiv
Year: 2009
Subjects: subject: Combinatorics (math.CO)
subject: Quantum Algebra (math.QA)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 05E05, 06A11, 16W30

description: In this paper we report on results of our investigation into the algebraic structure supported by the combinatorial geometry of the cyclohedron. Our new graded algebra structures lie between two well known Hopf algebras: the Malvenuto-Reutenauer algebra of permutations and the Loday-Ronco algebra of binary trees. Connecting algebra maps arise from a new generalization of the Tonks projection from the permutohedron to the associahedron, which we discover via the viewpoint of the graph associahedra of Carr and Devadoss. At the same time that viewpoint allows exciting geometrical insights into the multiplicative structure of the algebras involved. Extending the Tonks projection also reveals a new graded algebra structure on the simplices. Finally this latter is extended to a new graded Hopf algebra (one-sided) with basis all the faces of the simplices.
description: 23 figures, new expanded section about Hopf algebra of simplices, with journal corrections
Dynamical fluctuations for periodically driven diffusions
Creators: name: Singh, Navinder
name: Wynants, Bram
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study dynamical fluctuations in overdamped diffusion processes driven by time periodic forces. This is done by studying fluctuation functionals (rate functions from large deviation theory), of fluctuations around the non-equilibrium steady regime. We identify a concept called traffic. This traffic, which was introduced in the context of non-equilibrium steady state statistics, is extended here for time-dependent but periodic forces. We discuss the fluctuation functionals of occupations and currents, and work out some specific examples. The connection between these and non-equilibrium thermodynamic potentials, their corresponding variational principles and their Legendre transforms, are also discussed.
description: Explicit examples added
title: Seasonal Variation in the Species Composition, Abundance, and Size-Frequency Distribution of Zooplankton in Bear Lake, Utah-Idaho
Creators: name: Moreno, Edmundo G.
Publisher: name: Utah State University
Year: 1989

description: Bear Lake, a large oligotrophic lake (282 km2), was studied from October 1986 to December 1987 to determine the temporal changes in the zooplankton assemblage at one site in the pelagic zone and one in the littoral area. In this study, species composition, abundance, biomass, and size frequency distribution were determined. Additionally, chlorophyll a, water transparency, and temperature and oxygen profiles were measured to help interpret zooplankton changes during the study.
The zooplankton species assemblage comprised eight species of cladocera, seven species of copepods, and five species of rotifers. The abundance and biomass of the zooplankton assemblage, particularly that of crustaceans, were very low and comparable with those of oligotrophic systems. Mean densities of crustaceans in the pelagic zone, excluding copepod nauplii, varied from 250 to 1,700 organisms/m3. The analysis of the size structure of the zooplankton indicated the dominance of small organisms and the scarcity of large organisms, particularly cladocera. The zooplankton assemblage in the littoral zone was similar in species composition, abundance, and size structure to that in the pelagic zone. Many results suggest the littoral zooplankton assemblage is an extension of the pelagic assemblage.
Low zooplankton food resources and interference of calcium carbonate particles in the feeding behavior of crustaceans are suggested as the primary factors controlling the low abundance and biomass of zooplankton in Bear Lake. Size-selective fish predation probably causes the assemblage to be dominated by small species.
The analysis of Epischura nevadensis, the dominant species in the system, indicated that this species is bivoltine in Bear Lake. In the spring and summer, adult E. nevadensis were more abundant in the littoral zone, whereas copepodites were more abundant offshore.
The low density, biomass, and small size structure of the zooplankton in Bear Lake limits its importance as a source of food for fishes.
Multivariate Quantile Based on Kendall Ordering
Creators: name: Garcin, Matthieu
name: Guégan, Dominique
name: Hassani, Bertrand
Publisher: name: REVSTAT-Statistical Journal
Year: 2023

description: We introduce the Kendall multivariate quantiles, which are a transformation of orthant quantiles by the Kendall function. Each quantile is then a set of vectors with some advantageous properties, compared to the standard orthant quantile: i/ it in[1]duces a total order, ii/ the probability level of the quantile is consistent with the probability measure of the set of the dominated vectors, iii/ the multivariate quantiles based on the distribution function or on the survival function have vectors in common which conciliate both upper- and lower-orthant approaches. Definition and properties of the Kendall multivariate quantiles are illustrated using Archimedean copulas.
description: REVSTAT-Statistical Journal, Vol. 21 No. 1 (2023): REVSTAT-Statistical Journal
title: Learning from the Teaching Practices of Successful Teachers of Latina and Latino Students
Creators: name: Smith, Glori H.
Publisher: name: Utah State University
Year: 2015

description: The achievement gap between White students and students of color has long been a concern of educators. It is well established that critical pedagogy and culturally relevant teaching practices increase the possibility of academic achievement for ethnic minority students; yet, throughout the U.S., the implementation of such practices has been less than optimal. It is also clear that some teachers are doing an excellent job of teaching students of color. However, it is not clear what those teachers are doing and what their practices look like, particularly in secondary classrooms and for Latina/o students—the fastest growing ethnic minority population in the U.S. Are successful teachers of Latina/o youth engaging in critical pedagogy or culturally relevant teaching practices? Have they developed caring, empathetic relationships with students that result in greater engagement and academic success? Using a multifaceted theoretical framework of critical social theory, seen specifically through the lenses of culturally relevant pedagogy,
empathy and false empathy, critical studies in Whiteness, and critical race theory, this ethnographic multiple-case study aimed to answer those questions. By observing and interviewing educators whom principals, teachers, and parents all nominated as “successful” for the Latina and Latino students in a particular school, and identifying the teaching strategies and classroom management routines they employed, I hoped to illuminate key practices and underlying attitudes that other teachers can emulate as they strive to reach and teach Latina/o students.
title: Lifestyle Intervention in Emerging Adulthood: A Brief Acceptance-based Behavioral Intervention with Young Adults
Creators: name: Richards, Spencer M.
Publisher: name: Utah State University
Year: 2015

description: Across the U.S., obesity and overweight represent a rapidly growing public health concern that have been associated with expensive and debilitating outcomes such as depression, cancers, diabetes, and other metabolic disorders, cardiovascular disease, and significant disruption in quality of life, in addition to the tremendous public health costs. The current study examined a brief, randomized-controlled trial of acceptance and commitment therapy (ACT) with overweight and obese young adults.
The results of this study hold important implications for future research in the utility of ACT to address overweight- and obesity-related lifestyle change. While the study was limited due to small sample size, it nevertheless suggested that weight-related psychological flexibility is an important construct to address and target in the treatment of overweight and obesity. It may be an effective means of decreasing emotional eating and improving a sense of control while eating. The findings support previous research supporting ACT as an empirically supported intervention for improving the quality of life of adults struggling with overweight and obesity. Results from this study are encouraging and support the utility of ACT, even in brief format, to possibly improve the lives of overweight and obese young adults.
Study participants were randomly assigned to a 4-week experimental ACT group or an information control group, which received psychoeducational materials regarding lifestyle behaviors recommended by the Centers for Disease Control and Prevention (CDC). The results of the current study broadly showed that the experimental intervention was effective at improving weight-related psychological flexibility, which was also associated with reductions in emotionally avoidant eating and uncontrolled eating. In addition, the study showed relationships between improvements in psychological flexibility and eating process variables.
title: Spatial Temperature Variation in Refrigerated Road Transport
Creators: name: Phoenix, Joseph D.
Publisher: name: Utah State University
Year: 2015

description: This study evaluated the temperature variability that existed in refrigerated table grape consignments over a two-day journey from two suppliers in southern Spain, to client managed facilities in England. In order to inhibit senescence, perishable foods are transported in temperature-controlled transport to maximize shelf life. However, thermal dynamics suggests that uniform spatial temperature is not necessarily achieved despite a constant set point. As fruit exposed to suboptimal temperatures is more likely to exhibit undesirable quality issues, knowledge of spatial temperature can direct quality control team members to these potentially problematic pallets within an inbound shipment.
Warmer temperatures were identified on the passenger side of both trailers, at the rear of both trailers, and in lower pallet layers. Furthermore, heightened temperature was recorded in lower pallet layers in close proximity to the refrigeration return unit. The Supplier 2 shipment, set at 4oC, exhibited more spatially uniform temperatures compared to the Supplier 1 shipment set at 1oC. This implies that an operational compromise may exist: a higher but more uniform temperature or a lower but more variable temperature. In addition, analysis of airflow distribution suggested that airflow could be improved specifically in lower pallet layers and towards the rear of the trailer. Improved circulation will promote improved temperature uniformity for quality maintenance.
Physical education programmes in the parochial schools of the archdiocese of Vancouver, British Columbia, 1966-1967
Creators: name: Rizak, Eugene Donald
Publisher: name: University of British Columbia
Year: 2011

description: This study was undertaken to determine the status of the physical education programme, personnel, facilities, equipment and supplies in the parochial schools of the Archdiocese of Vancouver and to make recommendations for a more effective programme based on criteria derived from the British Columbia Administrative Bulletin for Elementary Schools, 1958, and from existing facilities, equipment and supplies. An attempt was made to answer the following six questions in order to gather the data needed to solve the problem. 1. How much time is allotted to the instructional programme each week? 2. Professionally speaking, how well prepared are the teachers of the instructional programme? 3. What activities and testing and measuring techniques are presented in the instructional programme? 4. What type of recreational programme is offered? 5. What facilities do the schools have? What types of equipment and supplies are used in the instructional programme? 6. What are the school policies regarding medical examinations and participation in the instructional programme? The data were collected by personal visits by the writer to thirty-eight parochial schools which represented the total number of schools in the Archdiocese. None of the schools went higher than grade eight and most finished at grade seven. Interviews were held with thirty-five principals and eighteen physical education teachers. For purpose of analysis, schools were classified according to enrollment and geographic area and the information was assembled into tables. One school allotted 100 minutes or more per week for a physical education programme as suggested by the Administrative Bulletin. The majority of teachers of physical education were classroom teachers. None had a degree but the majority had taken an undergrad physical education course. One third of the outside specialists had a physical education degree. A wide range of activities was included in the programmes of the schools and testing was done in a few schools. Approximately three-quarters of the schools offered intramural and interscholastic programmes. Softball, volleyball, basketball and track and field appeared with the greatest frequency in these programmes. More than one-half of the schools had gymnasiums although less than twenty-five per cent had dressing rooms. Indoor and outdoor facilities and equipment were inadequate. The majority of schools gave medical examinations once during the pupils' school years.
Tuning of tunneling current noise spectra singularities by localized states charging
Creators: name: Mantsevich, V. N.
name: Maslova, N. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report the results of theoretical investigations of tunneling current noise spectra in a wide range of applied bias voltage. Localized states of individual impurity atoms play an important role in tunneling current noise formation. It was found that switching "on" and "off" of Coulomb interaction of conduction electrons with two charged localized states results in power law singularity of low-frequency tunneling current noise spectrum ($1/f^α$) and also results on high frequency component of tunneling current spectra (singular peaks appear).
description: 7 pages, 4 figures
New Bivariate Birnbaum-Saunders Type Distribution Based on the Skew Generalized Normal Model
Creators: name: C. Arnold, Barry
name: Gallardo, Diego
name: W. Gómez, Héctor
Publisher: name: REVSTAT-Statistical Journal
Year: 2023

description: It is well known that it is possible to represent a Birnbaum-Saunders variable as a relatively simple (and invertible) function of a standard normal random variable. Marginal transformations of this kind are applied in this paper to a bivariate distribution with generalized skew-normal conditionals (and normal marginals), to obtain a new bivariate Birnbaum-Saunders distribution. Parameter estimation for this model is implemented using an EM algorithm. A simulation study sheds light on the performance of the estimation strategy. Data from a cancer risk study is used to illustrate use of the model. For this data set, the new model exhibits better performance than does a competing skew-normal based model already discussed in the literature. Possible multivariate extensions of the new model are outlined.
description: REVSTAT-Statistical Journal, Vol. 21 No. 1 (2023): REVSTAT-Statistical Journal
Quantum phase coherence in non-Markovian and reaction-diffusive transport
Creators: name: Akhanjee, Shimul
Publisher: name: arXiv
Year: 2010
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study quantum phase coherence and weak localization (WL) in disordered metals with restricted back-scattering and phenomenologically formulate a large class of unconventional transport mechanisms as modified diffusion processes not captured by the Boltzmann picture. Inspired by conductivity measurements in ferromagnetic films and semiconductors where anomalous power law corrections have been observed, we constrain memory dependent, self avoidance effects onto the quantum enhanced back-scattered trajectories, drastically altering the effect of weak localization in two dimensions (2D). Scale dependent corrections to the conductivity fail to localize the electrons in $d \ge 2$ for sufficiently weak disorder. Additionally, we analyze quantum transport in reaction-diffusion systems governed by the Fisher's equation and observe asymptotically similar delocalization in 2D. Such unconventional transport might be relevant to certain non-Fermi liquid or strongly correlated phases in 2D within the negative compressibility regime.
description: 4 pages, revtex, eps figures, new references included
title: Matching Watershed and Otolith Chemistry to Establish Natal Origin of an Endangered Desert Lake Sucker
Creators: name: Strohm, Deanna
Publisher: name: Utah State University
Year: 2015

description: Like many native endemic desert freshwater fish species, the June Sucker (Chasmistes liorus) is currently listed as endangered. Managers have increasingly turned to habitat restoration as a key component to recovery plans. For endangered species, one of the primary outcomes of habitat restoration is that it should result in successful reproduction and recruitment of individuals into the adult population. Confirmation of natural recruitment as a function of habitat restoration can only be achieved by establishing natal origins.
Recent research has proven the validity of otolith microchemistry, a technique that analyzes small quantities of elements, to trace potamodromous fish to their natal tributaries. Previous studies have documented that localized habitats in terms of microchemistry are reflected in otolith composition, thereby potentially making this a valuable way of determining fish origins. The primary goal of this study is to use otolith microchemistry to establish natal origins of June Sucker, ultimately in order to evaluate whether tributary habitat restoration results in natural recruitment. To accomplish this I first determined if the water chemistry among the three main spawning tributaries differed from one another. Second, I determined if the otolith chemistry reflected the otolith chemistry. Lastly, I developed a statistical model capable of classifying fish to their respective tributary based the element:calcium ratios in the otolith microchemistry.
Water chemistry differed significantly among all three spawning tributaries, and I observed a strong and significant relationship between otolith chemistry and water chemistry. The classification models based on otolith element:Ca signatures were capable of accurately classifying individual fish to their natal tributary (classification tree 89% accuracy; random forest model 91% accuracy), increasing the ability to determine if the fish’s origin is wild vs. hatchery. The data obtained from this study will advance the current understanding of the June sucker recruitment dynamics and result in a fundamental improvement in our ability to determine where natural recruitment into the adult spawning population is occurring. In addition, this knowledge may help evaluate factors limiting recruitment in Utah Lake tributaries, identify future restoration localities, and assist effectiveness monitoring of spawning habitat restoration efforts.
Folded Bivariate Distributions as Models for Magnitude Correlation
Creators: name: Afuecheta, Emmanuel
name: Nadarajah, Saralees
name: Chan, Stephen
Publisher: name: REVSTAT-Statistical Journal
Year: 2023

description: The concept of magnitude correlation requires the use of folded bivariate distributions. However, apart from the folded bivariate normal and folded bivariate t distributions (of these two only the former has received any real applications), nothing is known about folded bivariate distributions. Here, we introduce six new folded bivariate distributions. Applications involving stock indices of ten major economies show the value of the proposed distributions.
description: REVSTAT-Statistical Journal, Vol. 21 No. 1 (2023): REVSTAT-Statistical Journal
Self-consistent method for density estimation
Creators: name: Bernacchia, Alberto
name: Pigolotti, Simone
Publisher: name: arXiv
Year: 2009
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: The estimation of a density profile from experimental data points is a challenging problem, usually tackled by plotting a histogram. Prior assumptions on the nature of the density, from its smoothness to the specification of its form, allow the design of more accurate estimation procedures, such as Maximum Likelihood. Our aim is to construct a procedure that makes no explicit assumptions, but still providing an accurate estimate of the density. We introduce the self-consistent estimate: the power spectrum of a candidate density is given, and an estimation procedure is constructed on the assumption, to be released \emph{a posteriori}, that the candidate is correct. The self-consistent estimate is defined as a prior candidate density that precisely reproduces itself. Our main result is to derive the exact expression of the self-consistent estimate for any given dataset, and to study its properties. Applications of the method require neither priors on the form of the density nor the subjective choice of parameters. A cutoff frequency, akin to a bin size or a kernel bandwidth, emerges naturally from the derivation. We apply the self-consistent estimate to artificial data generated from various distributions and show that it reaches the theoretical limit for the scaling of the square error with the dataset size.
description: 21 pages, 5 figures
title: Influencing Acceptability of Parent Training Interventions Through Treatment Rationales
Creators: name: Chase, Trisha
Publisher: name: Utah State University
Year: 2015

description: Parent training is an effective intervention for parents of children with a variety of childhood disorders, and parents often view behavioral parent training as acceptable. Explanations and rationales for parent training are commonly provided at the beginning of treatment. However, there is little research regarding how rationales may influence acceptability. There is also limited information on whether fathers and mothers judge the acceptability of parent training differently. The purpose of this study was to determine whether changing the description of a behavioral parenting intervention influenced parents’ acceptability ratings and whether mothers and fathers differed in their ratings.
Participants viewed one of two descriptions of parent training that focused on either addressing deficits in parenting skills or enhancing existing parenting skills. The results indicated that there was not a significant difference in the acceptability of the two parent training descriptions. However, mothers rated both treatment descriptions as more acceptable than did fathers. Results also indicated that parents’ beliefs about their influence as parents significantly predicted acceptability of the parent training descriptions. The results of the current study suggested that treatment acceptability was not influenced by the way that the interventions were described. Future research should focus on how to increase acceptability of parent training for fathers and parents who do not feel that they have control and influence over their children.
Tangling clustering of inertial particles in stably stratified turbulence
Creators: name: Eidelman, A.
name: Elperin, T.
name: Kleeorin, N.
name: Melnik, B.
name: Rogachevskii, I.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Chaotic Dynamics (nlin.CD)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: We have predicted theoretically and detected in laboratory experiments a new type of particle clustering (tangling clustering of inertial particles) in a stably stratified turbulence with imposed mean vertical temperature gradient. In this stratified turbulence a spatial distribution of the mean particle number density is nonuniform due to the phenomenon of turbulent thermal diffusion, that results in formation of a gradient of the mean particle number density, \nabla N, and generation of fluctuations of the particle number density by tangling of the gradient, \nabla N, by velocity fluctuations. The mean temperature gradient, \nabla T, produces the temperature fluctuations by tangling of the gradient, \nabla T, by velocity fluctuations. These fluctuations increase the rate of formation of the particle clusters in small scales. In the laboratory stratified turbulence this tangling clustering is much more effective than a pure inertial clustering that has been observed in isothermal turbulence. In particular, in our experiments in oscillating grid isothermal turbulence in air without imposed mean temperature gradient, the inertial clustering is very weak for solid particles with the diameter 10 microns and Reynolds numbers Re =250. Our theoretical predictions are in a good agreement with the obtained experimental results.
description: 16 pages, 4 figures, REVTEX4, revised version
Estimation of Distribution Function using Percentile Ranked Set Sampling
Creators: name: Can Sevil, Yusuf
name: Ozkal Yildiz, Tugba
Publisher: name: REVSTAT-Statistical Journal
Year: 2023

description: The estimation of distribution function has received considerable attention in the literature. Because, many practical problems involve estimation of distribution function from experimental data. Estimating the distribution function makes it possible to do pointwise estimation and to make statistical inference about the distribution of interested population. In this study, we suggested an empirical distribution function (EDF) for percentile ranked set sampling (PRSS). Bias of the EDF estimator is investigated theoretically and numerically. Relative efficiencies of the proposed EDF estimator based on PRSS with respect to EDF estimator based on simple random sampling (SRS) and ranked set sampling (RSS) are obtained. We also considered impact of imperfect rankings on the EDF based on PRSS. According to the results, the proposed EDF estimator is unbiased for the extreme ”minimum and maximum” points and center of the distribution. Also, it is clearly appeared that the EDF estima[1]tor based on PRSS is more efficient than the EDF based on SRS. Another important result is that the suggested EDF estimator has larger efficiencies than the EDF based on RSS for some special cases of PRSS. In the application, the EDF based on PRSS is used to estimate the proportion of women in obesity class III (BMI> 40).
description: REVSTAT-Statistical Journal, Vol. 21 No. 1 (2023): REVSTAT-Statistical Journal
title: Qualitative Case Study on Cell Phone Appropriation for Language Learning Purposes in a Dominican Context
Creators: name: Martiz, Gisela
Publisher: name: Utah State University
Year: 2015

description: This research study investigated how a Dominican English language teacher and her students appropriated cell phone features for educational purposes inside and outside the classroom. The dissertation used a qualitative approach that focused on the teacher, and four students selected from a class of 23. Data collection took place for 8 weeks in an English language center located at a public university in the Dominican Republic in the summer of 2014. I collected data through interviews, conversations, classroom observations, and questionnaires. Data were analyzed to identify emerging themes that described how the teacher and students used their cell phones for different educational activities related to English language learning. Findings identified four major themes on how the teacher used different cell phone features for educational purposes: cell phone as connectivity tool, content delivery tool, research and reference tool, and assessment facilitation tool. Findings from the four student subcases indicated that they appropriated features in their cell phones in different ways, including: iPod as a cell phone (student 1), assessment and feedback facilitation tool (student 2), peer- and self-assessment facilitation tool and e-reader (student 3), and multimedia delivery and social interactivity tool (student 4). Themes across subcases and from the classroom in general indicated that participants used features that allowed them to use their cell phones as tools for data gathering and note taking, reference and research, collaboration, and repository. Findings from this dissertation shed light on how a teacher and students can make use of their own mobile technologies to support English language learning in a Dominican classroom with uneven access to technology.
Modelling Pages Left Blank in Univesity Examination
Creators: name: K. Ghosh, Suman
name: Sen, Subhradev
Publisher: name: REVSTAT-Statistical Journal
Year: 2023

description: Trees are the main sources of paper production, in most of the cases, as far as the intellectual usages are concerned. However, our planet is lacking in that particular natural resource due to rapid growth of population, urbanization, and increased pollution, more importantly non-judicial utilization of such kind. Indian education sectors (schools, colleges, universities) utilize a major part in consumption of papers as a classical practice for conducting examinations and other documentation activities. Our attempt in this article is to investigate and provide an optimal estimate of the number of pages actually required in answer booklet in higher education sector. Truncated Poisson distribution is found to be the best fit for the data on number of pages left blank in an answer booklet after conduction of semester end examinations. To predict the outcome based on various factors such as, lines per pages, words per line, types of examinations etc. suitable regression modelling is performed. A real data set, collected over a period of one month, has been analysed to illustrate the methods and conclusion is accomplished in the direction of cost reduction, saving of papers, and in turn, logical uses of natural resource to protect environmental interests.
description: REVSTAT-Statistical Journal, Vol. 21 No. 1 (2023): REVSTAT-Statistical Journal
A Novel Method for Polarization Squeezing with Photonic Crystal Fibers
Creators: name: Milanovic, Josip
name: Lassen, Mikael
name: Andersen, Ulrik L.
name: Leuchs, Gerd
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Photonic Crystal Fibers can be tailored to increase the effective Kerr nonlinearity, while producing smaller amounts of excess noise compared to standard silicon fibers. Using these features of Photonic Crystal Fibers we create polarization squeezed states with increased purity compared to standard fiber squeezing experiments. Explicit we produce squeezed states in counter propagating pulses along the same fiber axis to achieve near identical dispersion properties. This enables the production of polarization squeezing through interference in a polarization type Sagnac interferometer. We observe Stokes parameter squeezing of -3.9 +/- 0.3dB and anti-squeezing of 16.2 +/- 0.3dB.
description: 7 pages, 5 figures
Revealing buried information: Statistical processing techniques for ultracold gas image analysis
Creators: name: Segal, Stephen R.
name: Diot, Quentin
name: Cornell, Eric A.
name: Zozulya, Alex A.
name: Anderson, Dana Z.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The techniques of principal and independent component analysis are applied to images of ultracold atoms. As an illustrative example, we present the use of these model-independent methods to rapidly determine the differential phase of a BEC interferometer from large sets of images of interference patterns. These techniques have been useful in the calibration of the experiment and in the investigation of phase randomization. The details of the algorithms are provided.
description: v2: Many changes made to answer reviewer comments and improve clarity. 29 pages, 9 figures v3: Small change to emphasize role of models in result interpretation. 29 pages, 9 figures
Anisotropy of Solar Wind Turbulence between Ion and Electron Scales
Creators: name: Chen, C. H. K.
name: Horbury, T. S.
name: Schekochihin, A. A.
name: Wicks, R. T.
name: Alexandrova, O.
name: Mitchell, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Space Physics (physics.space-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The anisotropy of turbulence in the fast solar wind, between the ion and electron gyroscales, is directly observed using a multispacecraft analysis technique. Second order structure functions are calculated at different angles to the local magnetic field, for magnetic fluctuations both perpendicular and parallel to the mean field. In both components, the structure function value at large angles to the field S_perp is greater than at small angles S_par: in the perpendicular component S_perp/S_par = 5 +- 1 and in the parallel component S_perp/S_par > 3, implying spatially anisotropic fluctuations, k_perp > k_par. The spectral index of the perpendicular component is -2.6 at large angles and -3 at small angles, in broad agreement with critically balanced whistler and kinetic Alfven wave predictions. For the parallel component, however, it is shallower than -1.9, which is considerably less steep than predicted for a kinetic Alfven wave cascade.
description: 4 pages, 4 figures, replaced to match published version
title: Western Duck Sickness: Avian Botulism and Conservation in the Bear River Marsh, 1910-1933
Creators: name: Simek, Andrew J.
Publisher: name: Utah State University
Year: 2015

description: This thesis investigates how the Bear River marsh’s protection became a national interest and a cause for conservation in the Progressive Era. The thesis documents how the marsh declined because of irrigation development culminating with an outbreak of avian botulism in 1910, and traces the long process to protect the marshland. The research focused on examining local water development patterns of the nineteenth and early twentieth centuries, ornithological research in the 1910s, and the national sportsmen’s conservation movement of the 1920s. Upon examination of these events, it becomes clear that a coalition of ornithologists, sportsmen, and policy makers worked together to institute change that affected the marsh. Through showing how groups came together in the past to work for conservation, this research highlights the important role that a coalition of groups can have in reshaping how a landscape is viewed and managed.