cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Modulation induced transport signatures in correlated electron waveguides
Creators: name: Shavit, Gal
name: Oreg, Yuval
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recent transport experiments in spatially modulated quasi-1D structures created on top of LaAlO$_3$/SrTiO$_3$ interfaces have revealed some interesting features, including phenomena conspicuously absent without the modulation. In this work, we focus on two of these remarkable features and provide theoretical analysis allowing their interpretation. The first one is the appearance of two-terminal conductance plateaus at rational fractions of $e^2/h$. We explain how this phenomenon, previously believed to be possible only in systems with strong repulsive interactions, can be stabilized in a system with attraction in the presence of the modulation. Using our theoretical framework we find the plateau amplitude and shape, and characterize the correlated phase which develops in the system due to the partial gap, namely a Luttinger liquid of electronic trions. The second observation is a sharp conductance dip below a conductance of $1\times e^2/h$, which changes its value over a wide range when tuning the system. We theorize that it is due to resonant backscattering caused by a periodic spin-orbit field. The behavior of this dip can be reliably accounted for by considering the finite length of the electronic waveguides, as well as the interactions therein. The phenomena discussed in this work exemplify the intricate interplay of strong interactions and spatial modulations, and reveal the potential for novel strongly correlated phases of matter in systems which prominently feature both.
Phase Effects on the Conductance Through Parallel Double Dots
Creators: name: Apel, V. M.
name: Davidovich, Maria A.
name: Chiappe, G.
name: Anda, E. V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Phase effects on the conductance of a double-dot system in a ring structure threaded by a magnetic flux are studied. The Aharonov-Bohm effect combined with the dot many-body charging effects determine the phases of the currents going through each arm of the ring. The cases for zero magnetic flux or half a quantum of flux are discussed in detail. It is shown that, depending upon the magnetic flux and the state of charge of the dots, controlled by gate potentials, the dephasing of the upper and lower arm current gives rise to a $S=1/2$ or S=1 Kondo regime. We also show that even in the absence of a magnetic flux there can be a circulating current in the ring, depending on the system parameters.
description: Submitted to PRL 10/2003
What is Holography in the Plane-Wave Limit of AdS/CFT Correspondence ?
Creators: name: Yoneya, Tamiaki
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The issue of holographic principle in the PP-wave limit of the AdS/CFT correspondence is discussed, in the hope of clarifying some confusions in the literature. We show that, in the plane-wave limit, the relation between the partition function in the bulk and the gauge-invariant correlation functions on the boundary should be interpreted on the basis of a tunneling picture in the semi-classical approximation which is appropriate for the plane-wave limit. This leads to a natural relation between Euclidean S-matrix in the bulk and the short-distance operator-product expansion of the so-called BMN operators on the boundary.
description: 17 pages, 2 figures, an expanded written version of talk at the Nishinomiya Yukawa Memorial Symposium, Nishinomiya, November, 2002
Isoperla decepta Frison 1935
Creators: name: Grubbs, Scott A.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlodidae
Isoperla
Isoperla decepta

description: Isoperla decepta Frison
has been reported from southern Ontario south to Kentucky and Missouri (DeWalt et al. 2010). This species has been recently collected in northern Alabama, representing a new state record and a small southern range extension.
 Material examined. U.S.A., Alabama, Lauderdale Co., Anderson Creek, 6 km NE Rogersville, 21 April 2002, S.A. Grubbs, 1♂, 6♀ (WKU); Limestone Co., Cairo Branch, Elk River, 16 km NE Rogersville, 21 April 2002, S.A. Grubbs, 3♂, 5♂, 3 nymphs (WKU).
description: Published as part of Grubbs, Scott A., 2011, A Review Of Stonefly (Insecta; Plecoptera) Taxonomic Research In Alabama, With New State Records And An Updated Checklist, pp. 24-30 in Illiesia 7 (2) on page 26, DOI: 10.5281/zenodo.4760293
Educating rural Maryland: A historical and anecdotal record of Hagerstown Junior College, 1946-1987
Creators: name: Crowl, Vaughn Dana
Publisher: name: American University
Year: 2023

description: The historical record of Hagerstown Junior College is presented in the context of a pioneering effort in rural Maryland's venture into community college education. The study begins with an examination of National, State and local philosophical and attitudinal underpinnings in the founding of the College. A "systems" analysis of the Washington County Board of Education's mode of operation, from which the Junior College emerged, is presented as a theoretical construct through which political and sociological events in the College's history may be viewed for interpretation. Within this framework, a detailed account of the systematic evolution of Hagerstown Junior College from 1940 to its founding in 1946 is presented. This account takes direction from living historical resources as primary components in revealing the story of the College. It uses the personal interview as the primary analytical device for determining the causal factors preceding historical events. From these individual accounts, the theme of trial and struggle pervade the initial ten years of the College operation from 1946-1956. The identity of the College takes form from 1956-1966 as the College relocates to separate facilities on a high school campus. The "family" atmosphere of the College environment assumes prominence as a thematic role of the Junior College experience during this decade. This attribute was threaded through the fabric of the institution for the entirety of its forty-one year history. In 1966, the College reaches a turning point in its historical development as it moves onto its own separate campus. It achieves regional accreditation while expanding its traditional university parallel functions to include occupational programs. The predominate feature of keeping the College's traditions intact through a period of rapid change surfaces in the examination of governance and funding structures of the College. Student life and student services identify new student populations to be served. The changing mission of the College is interpreted through its historical development, as new goals and ideals are assimilated into the patterns of human experience which built and sustained the College through the fortieth graduating class.
Collective excitations of the U(1)-symmetric exciton insulator in a cavity
Creators: name: Lenk, Katharina
name: Eckstein, Martin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the equilibrium state and the collective modes of an excitonic insulator (EI) in a Fabry-Pérot cavity. In an EI, two bands of a semiconductor or semimetal spontaneously hybridize due to the Coulomb interaction between electrons and holes, leading to the opening of a gap. The coupling to the electromagnetic field reduces the symmetry of the system with respect to phase rotations of the excitonic order parameter from $U(1)$ to $Z_2$. While the reduction to a discrete symmetry would in general lead to a gapped phase mode and enhance the stability of the ordered phase, the coupling to the cavity leaves the mean-field ground state unaffected. Its energy remains invariant under $U(1)$ phase rotations, in spite of the lower $Z_2$ symmetry imposed by the cavity. In dipolar gauge, this can be traced back to the balancing of the linear light-matter coupling and the dipolar self-interaction at zero frequency. At nonzero frequency, however, the collective excitations do reflect the lower $Z_2$ symmetry, which shows that fluctuations beyond mean-field could play a crucial role in finding the true phase at finite temperature.
description: 13 pages, 6 figures
Bound states in two spatial dimensions in the non-central case
Creators: name: Martin, Andre
name: Wu, Tai Tsun
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We derive a bound on the total number of negative energy bound states in a potential in two spatial dimensions by using an adaptation of the Schwinger method to derive the Birman-Schwinger bound in three dimensions. Specifically, counting the number of bound states in a potential gV for g=1 is replaced by counting the number of g_i's for which zero energy bound states exist, and then the kernel of the integral equation for the zero-energy wave functon is symmetrized. One of the keys of the solution is the replacement of an inhomogeneous integral equation by a homogeneous integral equation.
description: Work supported in part by the U.S. Department of Energy under Grant No. DE-FG02-84-ER40158
Investigation of a generalized Obukhov Model for Turbulence
Creators: name: Baule, A.
name: Friedrich, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We introduce a generalization of Obukhov's model [A.M. Obukhov, Adv. Geophys. 6, 113 (1959)] for the description of the joint position-velocity statistics of a single fluid particle in fully developed turbulence. In the presented model the velocity is assumed to undergo a continuous time random walk. This takes into account long time correlations. As a consequence the evolution equation for the joint position-velocity probability distribution is a Fokker-Planck equation with a fractional time derivative. We determine the solution of this equation in the form of an integral transform and derive a relation for arbitrary single time moments. Analytical solutions for the joint probability distribution and its moments are given.
description: 10 pages
College student-intern socialization: Effects of social origin and situational variables on career outcomes
Creators: name: Kirshak, Raymond Peter
Publisher: name: American University
Year: 2023

description: The Intern Questionnaire (IQ) was designed to capture the attitudes and motivations of college students who participated in a one-semester, full-time, voluntary, credit-bearing internship program for undergraduates. The program is located in a major metropolitan area and serves over 350 member affiliates. Two-hundred twenty-three mail-out respondents, represent cohorts 1 to 5 years after the internship, and thirty-four respondents, interviewed just prior to completing their internship, show positive responses to the thirty IQ variable statements. The study had two major purposes. (1) To create a sociological model of career socialization for college student-interns. (2) To test 12 research hypotheses. For example, it was hypothesized that social origin variables will show a more positive effect than situational variables on career outcomes. Another hypothesis suggested that respondents from large home places will do better than those from small home places on career outcome variables. Regression analysis models invalidate the first hypothesis. The regression models show all social origin variables account for less than 10% of the variance in career outcomes and only 11% of the variance in situational variables. On the other hand, selected situational variables account for 47% of the variance in "practical experience" and 41% of the variance in "career choices.". Path analysis models show the flow of causation which college students experience through an internship. The most significant and policy-relevant path model is for the "size of home place" (social origin variable). Contrary to the hypothesis, a strong linear path shows respondents from small home places are more likely to feel that their internship "enriched their college life." Through an "enriched college life" respondents gained "practical experience" in the working world which helped them make "career choices.". Interviewee comments support the findings and indicate that students from small home places were drawn to the internship in order to experience social and cultural diversity. Through social and cultural diversity students report substantial positive growth and change in their lives.
On the systematic construction of basis invariants
Creators: name: Trautner, Andreas
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We describe a new, generally applicable strategy for the systematic construction of basis invariants (BIs). Our method allows one to count the number of mutually independent BIs and gives controlled access to the interrelations (syzygies) between mutually dependent BIs. Due to the novel use of orthogonal hermitian projection operators, we obtain the shortest possible invariants and their interrelations. The substructure of non-linear BIs is fully resolved in terms of linear, basis-covariant objects. The substructure distinguishes real (CP-even) and purely imaginary (CP-odd) BIs in a simple manner. As an illustrative example, we construct the full ring of BIs of the scalar potential of the general Two-Higgs-Doublet model.
description: 8 pages, to be published in JPCS
College student-intern socialization: Effects of social origin and situational variables on career outcomes
Creators: name: Kirshak, Raymond Peter
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3902
subject: Education policy, sociology and philosophy

description: The Intern Questionnaire (IQ) was designed to capture the attitudes and motivations of college students who participated in a one-semester, full-time, voluntary, credit-bearing internship program for undergraduates. The program is located in a major metropolitan area and serves over 350 member affiliates. Two-hundred twenty-three mail-out respondents, represent cohorts 1 to 5 years after the internship, and thirty-four respondents, interviewed just prior to completing their internship, show positive responses to the thirty IQ variable statements. The study had two major purposes. (1) To create a sociological model of career socialization for college student-interns. (2) To test 12 research hypotheses. For example, it was hypothesized that social origin variables will show a more positive effect than situational variables on career outcomes. Another hypothesis suggested that respondents from large home places will do better than those from small home places on career outcome variables. Regression analysis models invalidate the first hypothesis. The regression models show all social origin variables account for less than 10% of the variance in career outcomes and only 11% of the variance in situational variables. On the other hand, selected situational variables account for 47% of the variance in "practical experience" and 41% of the variance in "career choices.". Path analysis models show the flow of causation which college students experience through an internship. The most significant and policy-relevant path model is for the "size of home place" (social origin variable). Contrary to the hypothesis, a strong linear path shows respondents from small home places are more likely to feel that their internship "enriched their college life." Through an "enriched college life" respondents gained "practical experience" in the working world which helped them make "career choices.". Interviewee comments support the findings and indicate that students from small home places were drawn to the internship in order to experience social and cultural diversity. Through social and cultural diversity students report substantial positive growth and change in their lives.
Resumo do artigo publicado no evento ICECE 2019 (to book of abstracts)
Creators: name: Soares, Roniere
name: Walman Benício De Castro
name: Kleanny Gama Sales De Souza
name: Raiff Leite Soares
Publisher: name: figshare
Year: 2020
Subjects: subject: 90202 Automotive Engineering Materials
subject: FOS: Mechanical engineering

description: This article discriminates a didactic process that calculates the size of the crystalline domain having as reference five Ni50Ti50-XHfX .at% substitutional compositions obtained by electric arc fusion. By the results of XRD tests made on these samples, the FWHM values (width at half height) in more intense peaks from two types of radiation (Kα and Kα1) are taken in order to obtain the Beta values. Based on them the Scherrer equation is used to calculate the crystalline domain, whose value is multiplied by single correction factor at all angles 2θ in which peaks occur.
Sweltsa hoffmani Kondratieff & Kirchner 2009
Creators: name: Grubbs, Scott A.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Chloroperlidae
Sweltsa
Sweltsa hoffmani

description: Sweltsa hoffmani Kondratieff & Kirchner
 Grubbs & Sheldon (2008) provided the first confirmed Alabama state record of Sweltsa onkos (Ricker) from Talladega National Forest. Kondratieff & Kirchner (2009) has since partitioned this species into a northern and eastern form (S. onkos) known from Atlantic Canada south to Virginia and recentlydescribed second species (S. hoffmani) distributed from western New York south to eastern Tennessee. This specimen has since been reexamined and determined as S. hoffmani. The prior Alabama records (James 1972, Stark & Harris 1986, Surdick 2004) for Sweltsa (as S. mediana (Banks)) were based on females, yet are likely S. hoffmani. Females of S. hoffmani, S. mediana, and S. onkos are very difficult to distinguish and the distribution of S. mediana is in the southern Appalachian Mountains only from southwestern Virginia south to northwestern South Carolina. In addition, a second state record of S. hoffmani is now confirmed from the far northwestern portion of the state.
 Material examined. U.S.A., Alabama, Cleburne Co., small stream draining Dugger Mountain, Talladega National Forest, 22 May 2006, A.L. Sheldon, 1♂ (WKU); Colbert Co., tributary to Ross Branch, CR 1, 6 km SE Waterloo, 4 May 2008, S.A. Grubbs, 1♂ (WKU).
description: Published as part of Grubbs, Scott A., 2011, A Review Of Stonefly (Insecta; Plecoptera) Taxonomic Research In Alabama, With New State Records And An Updated Checklist, pp. 24-30 in Illiesia 7 (2) on page 26, DOI: 10.5281/zenodo.4760293
Chaos and the Effects of Planetary Migration on the Orbit of S/2000 S5 Kiviuq
Creators: name: Carruba, V.
name: Nesvorny', D.
name: Burns, J. A.
name: 'Cuk, M.
name: Tsiganis, K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Among the many new irregular satellites that have been discovered in the last five years, at least six are in the so-called Kozai resonance. Due to solar perturbations, the argument of pericenter of a satellite usually precesses from 0 to 360 degrees. However, at inclinations higher than 39.3 degrees and lower than 140.7 degrees a new kind of behavior occurs for which the argument of pericenter oscillates around +/-90 degrees. In this work we will concentrate on the orbital history of the saturnian satellite S/2000 S5 Kiviuq, one of the satellites currently known to be in such resonance Kiviuq's orbit is very close to the separatrix of the Kozai resonance. Due to perturbations from the other jovian planets, it is expected that orbits near the Kozai separatrix may show significant chaotic behavior. This is important because chaotic diffusion may transfer orbits from libration to circulation, and vice versa. To identify chaotic orbits we used two well-known methods: the Frequency Analysis Method (Laskar 1990) and Maximum Lyapunov Exponents (Benettin et al. 1980). Our results show that the Kozai resonance is crossed by a web of secondary resonances, whose arguments involve combinations of the argument of pericenter, the argument of the Great Inequality, longitude of the node, and other terms related to the secular frequencies g5, g6, and s6. Many test orbits whose precession period is close to the period of the Great Inequality (883 yrs), or some of its harmonics, are trapped by these secondary resonances, and show significant chaotic behavior. Planetary migration, by moving the locations of these secondary resonances, may have depleted an original population of Kozai resonators.
description: 47 pages, 18 figures, submitted to the Astronomical Journal
Economic analysis on energy efficiency certificate trading in Texas
Creators: name: Khomaini, Achmad Zulfikar
name: 0000-0001-9231-7774
Publisher: name: The University of Texas at Austin
Year: 2021
Subjects: Energy efficiency
Certificate trading
Sustainable development
Utilities
Economic analysis

description: Energy efficiency is the key to sustainable development; thus, decoupling economic growth from unsustainable energy demand is essential. The Public Utility Commission of Texas (PUCT) has mandated several utility companies' energy efficiency annual goals. While some utilities had been able to easily meet the goals, the other utility companies had struggled to meet the objectives. It is a certificate issued by independent certifying bodies confirming market actors' energy savings claims because of energy efficiency improvement measures. The certificate trading enables utilities buying certificates to meet their energy efficiency goal. If a utility company can implement more energy efficiency programs in terms of the number of kWh/kW with a relatively lower cost beyond their goal, they can sell their energy saving excess to other utility companies that have to implement more expensive energy efficiency measures. The simulation aims to minimize the cost of meeting the goal for energy reduction through energy programs by selecting the least-cost programs. This simulation will calculate the overall cost saving. There are two types of energy efficiency goals which are based on kW and kWh. Additional constraints are also implemented such as Mandatory low-income programs (MLIP) to ensure each utility implements low-income households' measures and 30% Within Service Area (WSA) to ensure 30% of their goal is achieved by their own program. This research suggested that enabling energy efficiency certificate trading minimizes the total cost for achieving the Texas energy efficiency goal. In almost all simulated cases, all utilities financially benefit from joining the trading system because the utility companies spend less to achieve their own energy efficiency goal. In all cases, adding MLIP and WSA constraints increases the total cost to achieve the goal. Furthermore, in terms of the policy, Stakeholder analysis suggested that policymakers consider each utility's different role. Utilities that are within the Electric Reliability Council of Texas (ERCOT) electricity market will have different business structures compared to the ones who are not. Furthermore, integrating Energy efficiency certificate and Renewable Energy Credit would also be more complicated, considering, not all utilities have an obligation to achieve the Renewable Energy Credit target.
Communication in the agricultural development process: A Cameroonian example
Creators: name: Koons, Adam Surla
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4401
subject: Anthropology
subject: FOS: Sociology

description: This dissertation is a case study of the implementation of a development project designed to increase food crop and cash crop production by providing improved farming techniques and inputs. The goal of this study was to improve the planning of strategies to transfer technical information, and the ability to pinpoint the causes and solutions of problems which are observed during project implementation. The research covered 18 months in the Northwest Province of Cameroon, and used the methodology and perspectives of cultural and applied anthropology, including surveys, interviews, and participant observation. Focusing on the interaction between newly trained male and female agricultural agents and their farmer clients, the study identified the factors which influenced the flow of information between project personnel and beneficiaries. Communication was shown to include activities and circumstances far beyond face-to-face interaction. A sequential model for identifying and diagnosing problems in communication was proposed and proven useful. Separate steps in the sequence include receptivity, contact, information transfer, information use, and feedback. Within each, cultural and structural factors were identified which affected how well farmers were able to learn and use project recommendations. Forums of contact, styles of information presentation, attitudes, perceptions, stereotypes, and expectations, affected the effectiveness of communication. The model was used to determine whether all farmers were benefitting from the communication strategies. The investigation found that there were different groups of farmers which required different approaches to communication. In particular, women and men did not benefit equally because of women's relatively low social status, different agricultural roles and activities, and gender stereotypes and perceptions which project planners did not recognize and for which they did not compensate. This dissertation illustrates that a good message is not always communicated, even if the messengers are good and the intended recipients are receptive. Recommendations are offered for alleviating problems in communication which hindered full achievement of project goals. The recommendations have broad applicability for development and are particularly relevant to agricultural extension.
Time-periodic quantum states of weakly interacting bosons in a harmonic trap
Creators: name: De Clerck, Marine
name: Evnin, Oleg
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider identical quantum bosons with weak contact interactions in a two-dimensional isotropic harmonic trap, and focus on states at the Lowest Landau Level (LLL). At linear order in the coupling parameter $g$, we exploit the rich algebraic structure of the problem to give an explicit construction of a large family of quantum states with energies of the form $E_0+gE_1/4+O(g^2)$, where $E_0$ and $E_1$ are integers. As a result, any superposition of these states evolves periodically with a period of at most $8π/g$ until, at much longer time scales of order $1/g^2$, corrections to the energies of order $g^2$ become important and may upset this perfectly periodic behavior. We further construct coherent-like combinations of these states that naturally connect to classical dynamics in an appropriate regime, and explain how our findings relate to the known time-periodic features of the corresponding weakly nonlinear classical theory. We briefly comment on possible generalizations of our analysis to other numbers of spatial dimensions and other analogous physical systems.
description: 14 pages, v2: published version
Communication in the agricultural development process: A Cameroonian example
Creators: name: Koons, Adam Surla
Publisher: name: American University
Year: 2023

description: This dissertation is a case study of the implementation of a development project designed to increase food crop and cash crop production by providing improved farming techniques and inputs. The goal of this study was to improve the planning of strategies to transfer technical information, and the ability to pinpoint the causes and solutions of problems which are observed during project implementation. The research covered 18 months in the Northwest Province of Cameroon, and used the methodology and perspectives of cultural and applied anthropology, including surveys, interviews, and participant observation. Focusing on the interaction between newly trained male and female agricultural agents and their farmer clients, the study identified the factors which influenced the flow of information between project personnel and beneficiaries. Communication was shown to include activities and circumstances far beyond face-to-face interaction. A sequential model for identifying and diagnosing problems in communication was proposed and proven useful. Separate steps in the sequence include receptivity, contact, information transfer, information use, and feedback. Within each, cultural and structural factors were identified which affected how well farmers were able to learn and use project recommendations. Forums of contact, styles of information presentation, attitudes, perceptions, stereotypes, and expectations, affected the effectiveness of communication. The model was used to determine whether all farmers were benefitting from the communication strategies. The investigation found that there were different groups of farmers which required different approaches to communication. In particular, women and men did not benefit equally because of women's relatively low social status, different agricultural roles and activities, and gender stereotypes and perceptions which project planners did not recognize and for which they did not compensate. This dissertation illustrates that a good message is not always communicated, even if the messengers are good and the intended recipients are receptive. Recommendations are offered for alleviating problems in communication which hindered full achievement of project goals. The recommendations have broad applicability for development and are particularly relevant to agricultural extension.
Taeniopterygidae Klapalek 1905
Creators: name: Grubbs, Scott A.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Taeniopterygidae

description: Family Taeniopterygidae
 Oemopteryx contorta (Needham & Claassen)
 Strophopteryx fasciata (Burmeister)
 Taeniopteryx burksi Ricker & Ross
 T. lita Frison
 T. lonicera Ricker & Ross
 T. maura (Pictet)
 T. metequi Ricker & Ross
 T. ugola Ricker & Ross
description: Published as part of Grubbs, Scott A., 2011, A Review Of Stonefly (Insecta; Plecoptera) Taxonomic Research In Alabama, With New State Records And An Updated Checklist, pp. 24-30 in Illiesia 7 (2) on page 28, DOI: 10.5281/zenodo.4760293
Reducing hostility and increasing locus-of-control in low-income Black children: A comparison of two treatments
Creators: name: Laknahour, Holly Hickson
Publisher: name: American University
Year: 2023

description: In order to examine the effects of psychodramatic role play in comparison to discussion groups on hostility and locus of control in children, sixty-five urban, Black children from low-income families were randomly assigned to one of two treatment conditions. Subjects were administered fifteen sessions of either psychodrama or discussion focusing on a list of the fifteen most-feared events in their environment. The Nowicki-Strickland Locus of Control Survey for Children (1973) was administered pre- and posttest as a measure of change in locus of control. As a measure of change in hostile perceptions, one of two sets of six TAT cards was administered and scored for hostile content using the Hostility Directed Outward and Hostility Directed Inward Scales from the Hostile Content Analysis Scales devised by Gottschalk, Winget, and Gleser (1969). The alternate set was used post-test. Subjects in both psychodrama groups demonstrated a marked increase in internality on the Locus of Control scale, while subjects in both discussion groups decreased in internality. The difference in outcome of the treatment conditions was significant at the.01 level of confidence. Subjects in both psychodrama groups demonstrated a non-significant increase in both hostility directed outward and hostility directed inward. Subjects in the two discussion groups evidenced a non-significant decrease in hostility directed outward and a non-significant decrease in hostility directed inward. However, a higher proportion of subjects in the psychodrama groups showed a decrease in both hostility measures than in the discussion groups. It is likely that no real changes were observed in the hostility measures, therefore. While the evidence strongly supports the superiority of psychodrama over discussion-style groups in increasing internal locus of control for this population, the results for the hostility measures are inconclusive. Possible explanations include the need for tighter control of interviewers' technique, for larger numbers of subjects to counteract the wide range of scores within groups, and for measurements requiring less verbal activity. The author recommends further research into the nature of hostility and aggression for this population, and suggests that examining behavior and value systems may prove more useful than examining perception.
Whitney towers and the Kontsevich integral
Creators: name: Schneiderman, Rob
name: Teichner, Peter
Publisher: name: arXiv
Year: 2004
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M99, 57M25

description: We continue to develop an obstruction theory for embedding 2-spheres into 4-manifolds in terms of Whitney towers. The proposed intersection invariants take values in certain graded abelian groups generated by labelled trivalent trees, and with relations well known from the 3-dimensional theory of finite type invariants. Surprisingly, the same exact relations arise in 4 dimensions, for example the Jacobi (or IHX) relation comes in our context from the freedom of choosing Whitney arcs. We use the finite type theory to show that our invariants agree with the (leading term of the tree part of the) Kontsevich integral in the case where the 4-manifold is obtained from the 4-ball by attaching handles along a link in the 3-sphere.
description: Published by Geometry and Topology Monographs at http://www.maths.warwick.ac.uk/gt/GTMon7/paper4.abs.html
Reducing hostility and increasing locus-of-control in low-income Black children: A comparison of two treatments
Creators: name: Laknahour, Holly Hickson
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 52
subject: Psychology
subject: FOS: Psychology
classificationCode: 5205
subject: Social and personality psychology

description: In order to examine the effects of psychodramatic role play in comparison to discussion groups on hostility and locus of control in children, sixty-five urban, Black children from low-income families were randomly assigned to one of two treatment conditions. Subjects were administered fifteen sessions of either psychodrama or discussion focusing on a list of the fifteen most-feared events in their environment. The Nowicki-Strickland Locus of Control Survey for Children (1973) was administered pre- and posttest as a measure of change in locus of control. As a measure of change in hostile perceptions, one of two sets of six TAT cards was administered and scored for hostile content using the Hostility Directed Outward and Hostility Directed Inward Scales from the Hostile Content Analysis Scales devised by Gottschalk, Winget, and Gleser (1969). The alternate set was used post-test. Subjects in both psychodrama groups demonstrated a marked increase in internality on the Locus of Control scale, while subjects in both discussion groups decreased in internality. The difference in outcome of the treatment conditions was significant at the.01 level of confidence. Subjects in both psychodrama groups demonstrated a non-significant increase in both hostility directed outward and hostility directed inward. Subjects in the two discussion groups evidenced a non-significant decrease in hostility directed outward and a non-significant decrease in hostility directed inward. However, a higher proportion of subjects in the psychodrama groups showed a decrease in both hostility measures than in the discussion groups. It is likely that no real changes were observed in the hostility measures, therefore. While the evidence strongly supports the superiority of psychodrama over discussion-style groups in increasing internal locus of control for this population, the results for the hostility measures are inconclusive. Possible explanations include the need for tighter control of interviewers' technique, for larger numbers of subjects to counteract the wide range of scores within groups, and for measurements requiring less verbal activity. The author recommends further research into the nature of hostility and aggression for this population, and suggests that examining behavior and value systems may prove more useful than examining perception.
Hydrodynamic response to jets with a source based on causal diffusion
Creators: name: Tachibana, Y.
name: Angerami, A.
name: Bass, S. A.
name: Cao, S.
name: Chen, Y.
name: Coleman, J.
name: Cunqueiro, L.
name: Dai, T.
name: Du, L.
name: Ehlers, R.
name: Elfner, H.
name: Everett, D.
name: Fan, W.
name: Fries, R.
name: Gale, C.
name: He, Y.
name: Heffernan, M.
name: Heinz, U.
name: Jacak, B. V.
name: Jacobs, P. M.
name: Jeon, S.
name: Kauder, K.
name: Ke, W.
name: Khalaj, E.
name: Kordell, M.
name: Kumar, A.
name: Luo, T.
name: Luzum, M.
name: Majumder, A.
name: McNelis, M.
name: Mulligan, J.
name: Nattrass, C.
name: Oliinychenko, D.
name: Pablos, D.
name: Pang, L. G.
name: Park, C.
name: Paquet, J. -F.
name: Putschke, J. H.
name: Roland, G.
name: Schenke, B.
name: Schwiebert, L.
name: Shen, C.
name: Silva, A.
name: Sirimanna, C.
name: Soltz, R. A.
name: Vujanovic, G.
name: Wang, X. -N.
name: Wolpert, R. L.
name: Xu, Y.
name: Yang, Z.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We study the medium response to jet evolution in the quark-gluon plasma within the JETSCAPE framework. Recoil partons' medium response in the weakly coupled description is implemented in the multi-stage jet energy-loss model in the framework. As a further extension, the hydrodynamic description is rearranged to include in-medium jet transport based on a strong-coupling picture. To interface hydrodynamics with jet energy-loss models, the hydrodynamic source term is modeled by a causal formulation employing the relativistic diffusion equation. The jet shape and fragmentation function are studied via realistic simulations with weakly coupled recoils. We also demonstrate modifications in the medium caused by the hydrodynamic response.
description: 4 pages, 2 figures, contribution to the Quark Matter 2019 proceedings
Experimental Tuning of Transport Regimes in Hyperuniform Disordered Photonic Materials
Creators: name: Aubry, Geoffroy J.
name: Froufe-Pérez, Luis S.
name: Kuhl, Ulrich
name: Legrand, Olivier
name: Scheffold, Frank
name: Mortessagne, Fabrice
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present wave transport experiments in hyperuniform disordered arrays of cylinders with high dielectric permittivity. Using microwaves, we show that the same material can display transparency, photon diffusion, Anderson localization, or a full band gap, depending on the frequency $ν$ of the electromagnetic wave. Interestingly, we find a second weaker band gap, which appears to be related to the second peak of the structure factor. Our results emphasize the importance of spatial correlations on different length scales for the formation of photonic band gaps.
description: Main text (6 pages, 4 figures) + SI (4 pages, 7 figures); The SI videos are permanently stored on the Zenodo repository https://doi.org/10.5281/zenodo.3978032
Phase-stable source of polarization-entangled photons using a polarization Sagnac interferometer
Creators: name: Kim, Taehyun
name: Fiorentino, Marco
name: Wong, Franco N. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate a simple, robust, and ultrabright parametric down-conversion source of polarization-entangled photons based on a polarization Sagnac interferometer. Bidirectional pumping in type-II phase-matched periodically poled KTiOPO4 yields a measured flux of 5 000 polarization-entangled pairs/s per mW of pump power in a 1-nm bandwidth at 96.8% quantum-interference visibility. The common-path arrangement of the Sagnac interferometer eliminates the need for phase stabilization for the biphoton output state.
description: Submitted to PRA
On the causal hierarchy of Lorentzian length spaces
Creators: name: Hau, L. Ake
name: Pacheco, Armando J. Cabrera
name: Solis, Didier A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work we provide the full description of the upper levels of the classical causal ladder for spacetimes in the context of Lorenztian length spaces, thus establishing the hierarchy between them. We also show that global hyperbolicity, causal simplicity, causal continuity, stable causality and strong causality are preserved under distance homothetic maps.
description: The notion of weakly locally causally closed sets has been introduced. Other details brought to our attention by the referees have been addressed. See the accepted version by Classical and Quantum Gravity for the latest changes (https://doi.org/10.1088/1361-6382/abb25f)
Women part-timers in male professions: An empirical exploration of marginality in work and family
Creators: name: Leo, Elaine Stahl
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 44
subject: Human society

description: Part-time professional women, a population neglected in occupational and dual-career family research, are the focus of this interview study which explores the empirical usefulness of "marginality" as a multi-level sensitizing concept for viewing their lives. Following Turner (1964), they are deemed objective marginals as incongruent status occupants. The term "multiple marginals," an expansion of the classic concept, describes the women's simultaneous occupancy of several traditionally incongruent pairs of status positions: woman in male occupation, part-timer in male profession, and part-timer in homemaking. Since both career and family were highly salient to most of the women, they met an initial criterion for experiencing their objective marginality. They reported high marital and fairly high family life satisfaction. Their professional husbands worked full time but reportedly shared responsibility equitably for traditionally female as well as male household tasks. The women's job satisfaction level was comparable with national norms, but they were less satisfied with their work careers than with their jobs. Many experienced considerable job-family role strain despite their part-time work schedules. Many experienced particular role strain as part-timers in male professions, but all steadfastly maintained professional self-images despite perceiving little support for these from full-time colleagues. Most perceived themselves to experience marginality as part-time professionals; fewer perceived themselves to be socially marginal as part-time homemakers, but vestiges of full-time homemaker role accomplishment ideals were still apparent in expectations many held up for themselves. Initial evidence based primarily on cross-tabulations of extent of perceived marginality with other study variables and secondarily on personality trait self-reports indicates that the marginality concept may have potential but that its conceptualization and measurement need refinement. All of the women used individualized arrays of strategies to cope with role conflicts. Prevalence of use of different coping strategies varied in some respects from prevalencies found in Gray's (1983) study of women employed full time in male professions. Most of the women considered their choice of part-time employment the best compromise for maintaining careers while rearing children.
Women part-timers in male professions: An empirical exploration of marginality in work and family
Creators: name: Leo, Elaine Stahl
Publisher: name: American University
Year: 2023

description: Part-time professional women, a population neglected in occupational and dual-career family research, are the focus of this interview study which explores the empirical usefulness of "marginality" as a multi-level sensitizing concept for viewing their lives. Following Turner (1964), they are deemed objective marginals as incongruent status occupants. The term "multiple marginals," an expansion of the classic concept, describes the women's simultaneous occupancy of several traditionally incongruent pairs of status positions: woman in male occupation, part-timer in male profession, and part-timer in homemaking. Since both career and family were highly salient to most of the women, they met an initial criterion for experiencing their objective marginality. They reported high marital and fairly high family life satisfaction. Their professional husbands worked full time but reportedly shared responsibility equitably for traditionally female as well as male household tasks. The women's job satisfaction level was comparable with national norms, but they were less satisfied with their work careers than with their jobs. Many experienced considerable job-family role strain despite their part-time work schedules. Many experienced particular role strain as part-timers in male professions, but all steadfastly maintained professional self-images despite perceiving little support for these from full-time colleagues. Most perceived themselves to experience marginality as part-time professionals; fewer perceived themselves to be socially marginal as part-time homemakers, but vestiges of full-time homemaker role accomplishment ideals were still apparent in expectations many held up for themselves. Initial evidence based primarily on cross-tabulations of extent of perceived marginality with other study variables and secondarily on personality trait self-reports indicates that the marginality concept may have potential but that its conceptualization and measurement need refinement. All of the women used individualized arrays of strategies to cope with role conflicts. Prevalence of use of different coping strategies varied in some respects from prevalencies found in Gray's (1983) study of women employed full time in male professions. Most of the women considered their choice of part-time employment the best compromise for maintaining careers while rearing children.
Extracting joint weak values with local, single-particle measurements
Creators: name: Resch, K. J.
name: Steinberg, A. M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Weak measurement is a new technique which allows one to describe the evolution of postselected quantum systems. It appears to be useful for resolving a variety of thorny quantum paradoxes, particularly when used to study properties of pairs of particles. Unfortunately, such nonlocal or joint observables often prove difficult to measure weakly in practice (for instance, in optics -- a common testing ground for this technique -- strong photon-photon interactions would be needed). Here we derive a general, experimentally feasible, method for extracting these values from correlations between single-particle observables.
description: 6 pages