cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Experimental realization of spin-tensor momentum coupling in ultracold Fermi gases
Creators: name: Li, Donghao
name: Huang, Lianghui
name: Peng, Peng
name: Bian, Guoqi
name: Wang, Pengjun
name: Meng, Zengming
name: Chen, Liangchao
name: Zhang, Jing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We experimentally realize the spin-tensor momentum coupling (STMC) using the three ground Zeeman states coupled by three Raman laser beams in ultracold atomic system of $^{40}$K Fermi atoms. This new type of STMC consists of two bright-state bands as a regular spin-orbit coupled spin-1/2 system and one dark-state middle band. Using radio-frequency spin-injection spectroscopy, we investigate the energy band of STMC. It is demonstrated that the middle state is a dark state in the STMC system. The realized energy band of STMC may open the door for further exploring exotic quantum matters.
description: 6 pages, 4 figures
title: Технология защиты окружающей среды. Ч.1
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2018

description: В учебном пособии изложены основные технологии процессов химической и биологической очистки природных и сточных вод в соответствии с рабочей программой дисциплины «Технология защиты окружающей среды». Учебное пособие предназначено для студентов всех форм обучения по направлениям: 20.03.01 «Техносферная безопасность» и 18.03.02 «Энерго- и ресурсосберегающие процессы в химической технологии, нефтехимии и биотехнологии», а также для самостоятельной работы студентов.
Parental Involvement and the Intergenerational Transmission of Educational Attainment
Creators: name: Hardy, Bradley
name: Gershenson, Seth
Publisher: name: American University
Year: 2023

description: Several authors have speculated that better-educated parents’ higher levels of parental involvement may influence the intergenerational transmission of education; however, this hypothesis has yet to be formally tested. We begin to fill this gap in the literature by estimating augmented intergenerational mobility models that include measures of parental involvement using rich data from the Child and Young Adult Supplement to the National Longitudinal Survey (NLSY79). In a sample of 3,208 children linked to 2,031 mothers, we find that much of the correlation between mothers’ and children’s education is driven by college-educated mothers reading to their children. Looking across household types, this relationship is stronger for children of married parents and teenage parents, respectively.
Electronic States and Cyclotron Resonance in n-type InMnAs
Creators: name: Sanders, G. D.
name: Sun, Y.
name: Kyrychenko, F. V.
name: Stanton, C. J.
name: Kodaparast, G. A.
name: Zudov, M. A.
name: Kono, J.
name: Matsuda, Y. H.
name: Miura, N.
name: Munekata, H.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a theory for electronic and magneto-optical properties of n-type In(1-x)Mn(x)As magnetic alloy semiconductors in a high magnetic field, B. We use an 8-band Pidgeon-Brown model generalized to include the wavevector (Kz) dependence of the electronic states as well as s-d and p-d exchange interactions with localized Mn d-electrons. Calculated conduction-band Landau levels exhibit effective masses and g factors that are strongly dependent on temperature, magnetic field, Mn concentration (x), and Kz. Cyclotron resonance (CR) spectra are computed using Fermi's golden rule and compared with ultrahigh-magnetic-field (> 50 T) CR experiments, which show that the electron CR peak position is sensitive to x. Detailed comparison between theory and experiment allowed us to extract s-d and p-d exchange parameters, alpha and beta. we find that not only alpha but also beta affects the electron mass because of the strong interband coupling in this narrow gap semiconductor. In addition, we derive analytical expressions for the effective masses and g facors within the 8-band model. Results indicate that (alpha - beta) is the crucial parameter that determines the exchange interaction correction to the cyclotron masses. These findings sould be useful for designing novel devices based on ferromagnetic semiconductors.
description: 19 pages, 13 figures
Parental Involvement and the Intergenerational Transmission of Educational Attainment
Creators: name: Hardy, Bradley
name: Gershenson, Seth
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3904
subject: Specialist studies in education

description: Several authors have speculated that better-educated parents’ higher levels of parental involvement may influence the intergenerational transmission of education; however, this hypothesis has yet to be formally tested. We begin to fill this gap in the literature by estimating augmented intergenerational mobility models that include measures of parental involvement using rich data from the Child and Young Adult Supplement to the National Longitudinal Survey (NLSY79). In a sample of 3,208 children linked to 2,031 mothers, we find that much of the correlation between mothers’ and children’s education is driven by college-educated mothers reading to their children. Looking across household types, this relationship is stronger for children of married parents and teenage parents, respectively.
title: The Dissolution of the Body Image: Immersive Environments and Sensory Experience
Creators: name: Crossley, Tatjana
Publisher: name: The Open University
Year: 2019

description: This thesis attempts to provide a reading of the body image in immersive space. Since this is a subject that has not been explored in architectural discourse, it is important to examine the implications of the architectural immersion on the body image. The research first analyzes the term ‘body image’ and uses the theories by Sartre, Lacan, Merleau-Ponty and Schilder to produce an understanding of its formation and development. The body image appears in tandem with subjectivity and this occurs through the identification of what constitutes the self and what is outside the self. This understanding of subject-self and object-other is a result of sensory perception. Synthesizing these theories, the thesis places the body image in the context of the immersive environment arguing that any space that manipulates sensory perception to some degree is immersive- hence the importance and relevance to architecture. The immersive environment, through the affectation of the senses, causes a disorientation and re-orientation of the body image. It is a cyclical process of subjective experience influencing perception and the new perception influencing the subject resulting in a continual evolution of the body image. These concepts are then examined through a range of case studies that span history and media originating from 2-dimensional immersions, progressing to 3-dimensional ones. There has been little evolution in the way that architects take advantage of something that is inherently architectural. Consequently, the precedents expose a lack of development in understanding the implications of immersivity in architecture. The immersive has been and is still being used in ways that harbor on the gimmicky and illusionistic instead of assessing, with subtle nuances, the sensory effects of their spaces on the subjectivity of their users. The thesis provides a critique of architecture’s use of immersion and intends to begin a larger architectural discourse on the body image in the immersive environment.
Butocrysa insignis
Creators: name: Santos-Silva, Antonio
name: Botero, Juan Pablo
name: Nascimento, Francisco Eriberto de Lima
name: Martins, David dos Santos
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Butocrysa
Butocrysa insignis

description: Butocrysa insignis (Lucas, 1857)
 (Fig. 15)
 Material examined: BRAZIL, Espírito Santo (new state record): Linhares, 1 ♂, 09.XI.1990, J.S. Santos col. (RNV).
 Butocrysa insignis was described from“Brésil intérieur” [inland Brazil], as Amphionycha insignis. It has been reported that the species was described based on a single specimen (holotype). However, Lucas (1857) indicated: “ AMPHIONYCHA INSIGNIS (2)”; “(2) Dej. Cat. des Coléopt., 3 e edit., p. 379”. Accordingly, the specimens from Pierre François Marie Auguste Dejean (currently in the BMNH) are syntypes. Apparently, Dejean was involved in the identification of the specimens because Lucas himself indicated this (translated): “By doing so, I hope to signal sufficiently the entomological riches gathered by the Scientific Commission of South America, under the skillful direction of M. Le Comte de Castelnau ”. Currently, it is known from Brazil (Minas Gerais, Rio de Janeiro, São Paulo) (Monné, 2020b).
description: Published as part of Santos-Silva, Antonio, Botero, Juan Pablo, Nascimento, Francisco Eriberto de Lima & Martins, David dos Santos, 2020, New species, new records, and taxonomical notes in Cerambycidae (Coleoptera) from the state of Espírito Santo (Brazil), pp. 1-22 in Papéis Avulsos de Zoologia (Pap. Avulsos Zool., S. Paulo) (Pap. Avulsos Zool., S. Paulo) 60 on page 6, DOI: 10.11606/1807-0205/2020.60.45, http://zenodo.org/record/4614833
The absence of jets in cataclysmic variable stars
Creators: name: Soker, Noam
name: Lasota, Jean-Pierre
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show that the recently developed thermal model which successfully describes how jets are launched by young stellar objects, when applied to system containing disk-accreting white dwarfs naturally explain the otherwise surprising absence of jets in cataclysmic variable stars. Our main argument uses the crucial element of the thermal model, namely that the accreted material is strongly shocked due to large gradients of physical quantities in the boundary layer, and then cools on a time scale longer than its ejection time from the disk. In our scenario the magnetic fields are weak, and serve only to recollimate the outflow at large distances from the source, or to initiate the shock, but not as a jet-driving agent. Using two criteria in that model, for the shock formation and for the ejection of mass, we find the mass accretion rate above which jets could be blown from accretion disks around young stellar objects and white dwarfs. We find that these accretion mass rates are ~10^{-7} Mo/yr, and ~10^{-6} Mo/yr for young stellar objects and white dwarfs respectively. Considering the uncertainties of the model, these limits could overestimate the critical value by a factor of ~10.
description: Submitted to Astronomy and Astrophysics
title: Технология обращения с твердыми коммунальными отходами. Ч.1
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2019

description: В учебном пособии приведены общие положения по обращению с твердыми коммунальными отходами (ТКО), основные направления их утилизации и обезвреживания и методики расчета, которые могут быть использованы для решения практических задач при организации их сбора, транспортирования, обработки, утилизации, обезвреживания и размещения, а также для написания курсовых проектов и выпускных квалификационных работ. Настоящее пособие предназначено для студентов магистратуры по направлению «Энерго- и ресурсосберегающие процессы в химической технологии, нефтехимии и биотехнологии», а также для слушателей в системе дополнительного профессионального образования.
Bilateral unicompartmental knee arthroplasty: one stage or two stages?
Creators: name: Biazzo, Alessio
Publisher: name: figshare
Year: 2020
Subjects: subject: 110323 Surgery
subject: FOS: Clinical medicine

description: Background. Bilateral unicompartmental knee arthroplasty (UKA) may be performed as one- or two-stage procedure. Previous reports suggest that UKA provides a more rapid functional recovery than total knee arthroplasty. However, little data exist on whether bilateral UKA can be performed without increasing the perioperative risk compared with unilateral cases.METHODS: We retrospectively compared 51 patients treated between January 2014 and March 2017 with single-stage UKA (group A) with 51 patients who underwent unilateral procedure (group B) to evaluate perioperative complications. We noted no statistically significant difference between the two groups in terms of gender, age and body mass index.RESULTS: Patients who underwent single-stage bilateral UKA had longer operating room time with respect to single procedure (93.2 min vs. 50.7 min). However, the bilateral group had a shorter cumulative operating room time (93.2 min) compared to the unilateral group (101.5 min) with a statistically significant difference (p CONCLUSION: Our results demonstrated that bilateral simultaneous UKA does not increase the risk for perioperative complications. Total blood loss at discharge is statistically higher in bilateral UKA rather than unilateral UKA; however, cumulative hemoglobin loss is statistically lower in bilateral group. Patients can benefit from a single hospital admission and anesthetic time, while the shorter total inpatient stay and lower blood loss can reduce hospital costs in cases of bilateral surgery.
ZAKLADNE DETERMINANTY SVETOVEJ DEMOGRAFICKEJ SITUACIE V PREVEJ POLOVICI 21. STOROCIA
BASIC DETERMINANTS OF THE WORLD DEMOGRAPHIC SITUATION IN THE FIRST HALF OF THE 21ST CENTURY
Creators: name: KABAT, Ladislav
name: KABAT, Ladislav
Publisher: name: Unknown
Year: 2003
Subjects: subject: Agricultural and Food Policy
subject: Financial Economics
subject: International Development
subject: population development
subject: fertility
subject: natality
subject: developing countries
subject: developed countries
subject: migration

description: The current world demographic situation is extremely diversified according to geographical regions. Permanently observed and reported are high birth rates in developing countries and low birth rates in industrially developed countries. These two phenomena are reflected in the relatively high migration between these countries and cause consequently a broad range of political, social and economic problems. Neither political scene nor the civic society in these countries are ready to cope with these problems. The most visible and most frequent reaction to the problem (on the side of the developed countries) is strengthening their migration policies in order to block the migration inflows. These policies are often supported not only by the right wing parties but they are also greeted by the majority of population of developed countries. Qualified demographic arguments about the substance of the problem are rarely used. The purpose of this paper is to present some key statistical facts in order to support the public and fair discussion and to enhance public awareness of the current demographic situation and its possible future scenarios. The below presented facts could enhance the urgently needed further discussion on this topic.
Using City-Level Administrative Tax Data for Poverty and Mobility Research
Creators: name: Hardy, Bradley
name: Samudra, Rhucha
name: Brown-Robertson, LaTanya
name: Muhammad, Daniel
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 4407
subject: Policy and administration

description: We discuss two studies that utilize administrative tax data for poverty and mobility research in Washington, DC. As cities and states continue to vary in the level and type of social policy interventions, administrative data can provide unique opportunities to assess the efficacy of these local policy reforms. For state and local social policy research questions, we contend that administrative data are oftentimes favorable to survey data along the criteria of sample size, accuracy of both income and program participation, and the opportunity to use panel data econometric methods. Such administrative data can be supplemented in a variety of ways to further strengthen it. Overall, both survey and administrative data have unique features and should be viewed as complements to one another, not substitutes.
Using City-Level Administrative Tax Data for Poverty and Mobility Research
Creators: name: Hardy, Bradley
name: Samudra, Rhucha
name: Brown-Robertson, LaTanya
name: Muhammad, Daniel
Publisher: name: American University
Year: 2023

description: We discuss two studies that utilize administrative tax data for poverty and mobility research in Washington, DC. As cities and states continue to vary in the level and type of social policy interventions, administrative data can provide unique opportunities to assess the efficacy of these local policy reforms. For state and local social policy research questions, we contend that administrative data are oftentimes favorable to survey data along the criteria of sample size, accuracy of both income and program participation, and the opportunity to use panel data econometric methods. Such administrative data can be supplemented in a variety of ways to further strengthen it. Overall, both survey and administrative data have unique features and should be viewed as complements to one another, not substitutes.
title: Технология органических веществ. Ч.2
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2019

description: В учебном пособии представлены сведения об основных химических процессах органического синтеза. Материал изложен по видам типовых технологических схем: нитрование, этерификация, алкилирование, окисление, гидрирование и дегидрирование, конденсация и гидролиз. Приведены основные характеристики и закономерности процессов, принципиальные технологические схемы и химические реакции, лежащие в основе технологии и типы аппаратов. Учебное пособие предназначено для студентов химико-технологического факультета, обучающихся по направлению 18.03.01 «Химическая технология».
The possibility of detecting planets in the Andromeda Galaxy
Creators: name: Chung, S. -J.
name: Kim, D.
name: Collaboration, The Angstrom
name: :
name: Darnley, M. J.
name: Duke, J. P.
name: Gould, A.
name: Han, C.
name: Jeon, Y. -B.
name: Kerins, E.
name: Newsam, A.
name: Park, B. -G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Angstrom Project is using a global network of 2m-class telescopes to conduct a high cadence pixel microlensing survey of the bulge of the Andromeda Galaxy (M31), with the primary aim of constraining its underlying bulge mass distribution and stellar mass function. Here we investigate the feasibility of using such a survey to detect planets in M31. We estimate the efficiency of detecting signals for events induced by planetary systems as a function of planet/star mass ratio and separation, source type and background M31 surface brightness. We find that for planets of a Jupiter-mass or above that are within the lensing zone (~1 -3 AU) detection is possible above 3 $σ$, with detection efficiencies ~3% for events associated with giant stars, which are the typical source stars of pixel-lensing surveys. A dramatic improvement in the efficiency of ~40 -- 60% is expected if follow-up observations on an 8m telescope are made possible by a real-time alert system.
description: total 8 pages, including 8 figures, ApJ, submitted
title: Технология полимерных композиционных материалов. Дисперсно-наполненные композиционные материалы
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2019

description: Учебное пособие рассматривает один из разделов дисциплины «Технология полимерных композиционных материалов», обязательной в подготовке бакалавров по направлению 18.03.01 – Химическая технология. Подготовленные материалы способствуют закреплению знаний, полученных в процессе обучения по специальности, освоению нового научного оборудования. Предназначено для студентов, обучающихся по направлению 18.03.01 – Химическая технология, и может быть использовано в подготовке обучающихся других направлений.
The shock driving capability of a CME inferred from multiwavelength observations
Creators: name: Dagnew, Fithanegest Kassa
name: Gopalswamy, Nat
name: Tessema, Solomon Belay
name: Umuhire, Ange Cynthia
name: Yashiro, Seiji
name: Mäkelä, Pertti
name: Xie, Hong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The radial speed of a coronal mass ejection (CME) determines the shock-driving capability of a CME as indicated by the presence of a type II radio burst. Here we report on the April 18, 2014 CME that was associated with a type II radio burst in the metric and interplanetary domains. We used the radio-burst data provided by the San Vito Solar Observatory of the Radio Solar Telescope Network and data from the Wind spacecraft. The CME is a full halo in the field of view of the coronagraphs on board the Solar and Heliospheric Observatory (SOHO). The CME was also observed by the coronagraphs on board the Solar Terrestrial Relations Observatory (STEREO). We computed the CME shock and flux rope speeds based on the multi-view observations by the different coronagraphs and by EUV instruments. We determined the shock speed from metric and interplanetary radio observations and found them to be consistent with white-light observations, provided the metric type II burst and its continuation into the decameter-hectometric domain are produced at the shock flanks, where the speed is still high enough to accelerate electrons that produce the type II bursts. Interestingly, there was an interplanetary type II burst segment consistent with an origin at the shock nose suggesting that the curved shock was crossing plasma levels separated by a few solar radii. We conclude that the CME speed is high enough to produce the interplanetary Type II burst and a solar energetic particle (SEP) event. However, the speed is not high enough to produce a ground level enhancement (GLE) event, which requires the shock to form at a height of ~1.5 Rs.
description: 15 pages, 6 figures, accepted for publication in Sun and Geosphere, a special issue devoted to ISWI-2019
title: Технология целлюлозы. Подготовка древесины. Варка целлюлозы. Технологические расчёты. Ч.1
Creators: name: ELS IPR BOOKS
Publisher: name: Санкт-Петербургский государственный университет промышленных технологий и дизайна
Year: 2019

description: В первой части учебного пособия представлены сведения о технической целлюлозе, древесном сырье, его свойствах, подготовке древесины для производства целлюлозы и др. сведения о промывке и отбелке сульфатной целлюлозы, а также о регенерации химикатов сульфат - целлюлозного производства. Даны теоретические основы этих технологических процессов, основные типы применяемого оборудования. Пособие предназначено для изучения курсов «Технология целлюлозы», «Технология производства целлюлозы», «Технология ЦБП», ч.1, «Технологические процессы автоматизированных производств», студентами, обучающимися по направлению 29.03.03, 15.03.02, 15.03.04, а также 18.03.01 (заочное отделение).
Cumulative attraction and spatial dependence in a destination choice model for beach recreation
Creators: name: Phillips, Yvonne
name: Phillips, Yvonne
Publisher: name: Unknown
Year: 2016
Subjects: subject: Community/Rural/Urban Development
subject: Consumer/Household Economics
subject: Environmental Economics and Policy
subject: Research Methods/ Statistical Methods
subject: Risk and Uncertainty
subject: Beach recreation value
subject: Cost benefit analysis of coast development
subject: Random utility model
subject: Multiple destination visitors

description: Beach recreation value is an important consideration in a cost-benefit analysis of coastal development or conservation. A destination choice-based travel cost analysis is often used to quantify recreation values but the destination choice only partially reflects the intrinsic characteristics of that site. Visitors are influenced by opportunities available at other sites and can visit multiple sites resulting in spatially correlated errors. For this study about the recreation value of beaches on the Coromandel Peninsula we draw on the theory of cumulative attraction to analyse the compatibility of different beaches for the multiple-destination visitors who comprise more than half our sample. We investigate different random utility model formulations to explain destination choice and find that a cross-nested logit with sites nested by availability of amenities explains the observed patterns of visitation well and is more computationally efficient that non-closed-form models such as mixed logit. We also include inverse distance variables to the nearest amenity of each type and their significance supports the tenet of cumulative attraction that the importance of other spaces is greater when the attributes differ. Overall beach recreation values are maximised when sites are diverse in terms of development level and type.
An Experiment to Evaluate the Efficacy of Cognitive Tutor Geometry
Creators: name: Steele, Jennifer
name: Pane, John F.
name: McCaffrey, Daniel F.
name: Ikemoto, Gina S.
name: Slaughter, Mary Ellen
Publisher: name: American University
Year: 2023

description: This randomized, controlled field trial estimated the causal impact of a technology-based geometry curriculum on students' geometry achievement, as well as their attitudes toward mathematics and technology. The curriculum combines learner-centered classroom pedagogy with individualized, computer-based student instruction. Conducted over a three-year period in eight high schools within an urban fringe district, the study found that students assigned to the treatment curriculum scored 19 percent of a standard deviation lower on the geometry posttest that their counterparts assigned to the district's standard curriculum, but found no statistically significant impact on students' attitudes toward mathematics and technology. Researchers also collected observation and interview data on teachers' instructional practices. These data suggest that many teachers had difficulty implementing the treatment curriculum's learner-centered pedagogy. In fact, observed levels of learner-centered practices were only modestly higher in treatment classes than in control classes. In both treatment and control classes, however, higher levels of learner-centered pedagogy were associated with higher student achievement geometry.
Phoebella albomaculata
Creators: name: Santos-Silva, Antonio
name: Botero, Juan Pablo
name: Nascimento, Francisco Eriberto de Lima
name: Martins, David dos Santos
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Phoebella
Phoebella albomaculata

description: Phoebella albomaculata (Gahan, 1889) (Fig. 16)
 Material examined: BRAZIL, Espírito Santo (new state record): Aracruz, 19°48′11″S, 40°07′27″W, 1 ♂, 13. V.1990, M.P. Santos col. (SSA).
This species was described from Brazil (no further details). Currently,it is known from Brazil (Bahia) (Monné,2020b).
description: Published as part of Santos-Silva, Antonio, Botero, Juan Pablo, Nascimento, Francisco Eriberto de Lima & Martins, David dos Santos, 2020, New species, new records, and taxonomical notes in Cerambycidae (Coleoptera) from the state of Espírito Santo (Brazil), pp. 1-22 in Papéis Avulsos de Zoologia (Pap. Avulsos Zool., S. Paulo) (Pap. Avulsos Zool., S. Paulo) 60 on page 6, DOI: 10.11606/1807-0205/2020.60.45, http://zenodo.org/record/4614833
7595f2d0d587ab9998b39c6b3be4cec8.pdf
Creators: name: Bagheri-Bami, Alireza
Publisher: name: figshare
Year: 2020
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Ultrasonic assisted ball burnishing process is a newly developed alternative of conventional ball burnishing
process that enhances the surface properties of engineering materials through imposing both the static and
dynamic loadings. The process needs careful selection of design parameters to improve the performance measures such as surface roughness and hardness. In the present study an experimental investigation was carried out
to analyze effect of ultrasonic vibration amplitude, feed rate and static force on surface roughness and hardness
of aluminum 6061-T6 alloy. Here, number of 20 experiments was carried out through face centered central
composite design and values of surface roughness and hardness after each experiment were measured. Hereafter,
response surface methodology (RSM) was utilized to correlate empirical relationship between process parameters and responses. Further, numerical simulation of process using ABAQUS software has been carried out to
study states of residual stress and plastic equivalent strain under different processing condition. Results indicated
that in order to achieve maximum hardness and minimum surface roughness simultaneously, ultrasonic vibration amplitude of 8 µm, feed rate of 1000 mm/min and static force of 38 N, should be selected. The obtained
optimal results were then experimentally verified and the prediction errors for both the responses were lower
than 10%, implying rigidity of proposed methodology in finding the optimum results. The results obtained by FE
simulation showed that the maximum value and effective depth of compressive residual stress in ultrasonic
assisted process is significantly higher than that of conventional burnishing.
Determination of the Fermi Surface of MgB$_2$ by the de Haas-van Alphen effect
Creators: name: Carrington, A.
name: Meeson, P. J.
name: Cooper, J. R.
name: Balicas, L.
name: Hussey, N. E.
name: Yelland, E. A.
name: Lee, S.
name: Yamamoto, A.
name: Tajima, S.
name: Kazakov, S. M.
name: Karpinski, J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report measurements of the de Haas-van Alphen effect for single crystals of MgB$_2$, in magnetic fields up to 32 Tesla. In contrast to our earlier work, dHvA orbits from all four sheets of the Fermi surface were detected. Our results are in good overall agreement with calculations of the electronic structure and the electron-phonon mass enhancements of the various orbits, but there are some small quantitative discrepancies. In particular, systematic differences in the relative volumes of the Fermi surface sheets and the magnitudes of the electron-phonon coupling constants could be large enough to affect detailed calculations of T$_{c}$ and other superconducting properties.
description: 4 pages, 2 column with figures
AKI KIMARAD, AZ LEMARAD? AZ IT SZEKTOR SZEREPE A VÁLLALKOZÁSOK ÉLETÉBEN
THOSE WHO DROP BEHIND WILL BE OUT OF IT? THE ROLE OF THE IT SECTOR IN THE LIFE OF BUSINESSES
Creators: name: Bárdi-Szeberényi, Rita
name: Tamus, Antalné
name: Bárdi-Szeberényi, Rita
name: Tamus, Antalné
Publisher: name: Unknown
Year: 2017
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: kvalitatív kutatás
subject: digitális környezet
subject: IT biztonság
subject: qualitative research
subject: digital environment
subject: IT security

description: A vállalkozások üzleti folyamatait alapvetően megváltoztatja a számítógépes információs rendszerek megjelenése, fejlődése, alkalmazása, ezáltal számukra egyre nagyobb jelentőséggel bír az internet, az online marketing, az e-kereskedelem, a felhőalapú rendszerek és az informatikai képzés. Kvalitatív kutatásunkban azt vizsgáltuk, hogy a különböző vállalkozások vezetői hogyan vélekednek az informatikai fejlődésről, átalakulásról, és munkahelyük digitális környezetét hogyan ítélik meg. Primer kutatási eredményeink azt mutatják, hogy napjaink alapvető technológiája szinte minden vállalkozás életében megtalálható. Az internettel rendelkezők és az online marketinget használók száma növekedésnek indult, viszont a cégek többsége nem bízik meg kellőképpen az IT biztonságában, ezért számos informatikai lehetőséget még nem kívánnak/tudnak kihasználni vállalkozásuk napi gyakorlatában. ---------- The business processes of the companies fundamentally change the appearance of computer information systems, the development, the applications and by these the internet, the online marketing, e-commerce, cloud-based systems, and IT trainings have an increasing significance. In our qualitative research we examined various business leaders how they think about IT development, digital transformation and about the work environment perceptions. The primary research results show that today’s basic technology can be found in almost every business life. The internet holders and the number of online marketing users started to grow but the majority of the companies do not sufficiently confident in the security of IT therefore cannot take advantage of the daily practice of their business.
An Experiment to Evaluate the Efficacy of Cognitive Tutor Geometry
Creators: name: Steele, Jennifer
name: Pane, John F.
name: McCaffrey, Daniel F.
name: Ikemoto, Gina S.
name: Slaughter, Mary Ellen
Publisher: name: Journal of Research on Educational Effectiveness, Vol. 3
Year: 2023
Subjects: classificationCode: 39
subject: Education

description: This randomized, controlled field trial estimated the causal impact of a technology-based geometry curriculum on students' geometry achievement, as well as their attitudes toward mathematics and technology. The curriculum combines learner-centered classroom pedagogy with individualized, computer-based student instruction. Conducted over a three-year period in eight high schools within an urban fringe district, the study found that students assigned to the treatment curriculum scored 19 percent of a standard deviation lower on the geometry posttest that their counterparts assigned to the district's standard curriculum, but found no statistically significant impact on students' attitudes toward mathematics and technology. Researchers also collected observation and interview data on teachers' instructional practices. These data suggest that many teachers had difficulty implementing the treatment curriculum's learner-centered pedagogy. In fact, observed levels of learner-centered practices were only modestly higher in treatment classes than in control classes. In both treatment and control classes, however, higher levels of learner-centered pedagogy were associated with higher student achievement geometry.
The Forest Resources of Mississippi: A List of References
Creators: name: Watrous, Roberta C.
name: Watrous, Roberta C.
Publisher: name: Unknown
Year: 1947
Subjects: Agricultural and Food Policy
Land Economics/Use
Resource /Energy Economics and Policy

description: In addition to references on the forests and forest industries of Mississippi this list includes related material on physical and economic conditions which have a bearing on the present position and future possibilities of forestry in the State. The arrangement is alphabetical by author. Call numbers following the citations are those of the United States Department of Agriculture Library unless otherwise noted.
title: Undergraduate Physiotherapy Students' Choice and Use of Technology in Undertaking Collaborative Presentations
Creators: name: Thornton, Heather Amanda
Publisher: name: The Open University
Year: 2009

description: This case study explored students' preferences and use of technology for collaborative learning. The participants were third year physiotherapy undergraduate students working in small groups to produce a weekly seminar presentation (n=86). The main study was carried out in 2007/8. The groups were organised based on students' expressed preference for using technology. Data collection tools were interviews, questionnaires, observation and analysis of online natural trails. Ethical approval was granted by HPMEC in 2006. Students' choice of technology related to past experience, efficiency, quality of interaction, inclusivity and they used the technology online provided by the university rather than open source. They highly valued the specialised collaborative classroom that included computers and data projectors that enabled a group to visualise their output and connect to their online group sites. They used the online environment (the University's MLE) largely as a repository, 'offloading' some of the organisational components of collaboration and for knowledge acquisition, using the face-to-face meetings for interaction and co-construction. They used asynchronous discussion facilities for basic administration. Students wanted their education and social technologies e.g. Facebook kept separate. What differed in the groups was the level of face-to-face interaction to undertake the task collaboratively, as opposed to sub-dividing the task and working more cooperatively. The students were committed to collaborative working, but were focussed on face-to-face for co-construction of knowledge, which may relate to the professional culture and programme design. This study has implications for the introduction of technologies into health courses. Students need formative experience in other online technologies so that graduates can participate effectively in continuing professional activities. This needs to be introduced in an authentic situation such as when students are on placement and unable to meet face-to-face. Further research into what technologies may support collaborative learning for health students.
Disentangling Disadvantage : Can We Distinguish Good Teaching from Classroom Composition?
Creators: name: Steele, Jennifer
name: Engberg, John
name: Zamarro, Gema
name: Saavedra, Juan Esteban
Publisher: name: Center for Economic and Social Research
Year: 2023
Subjects: classificationCode: 39
subject: Education

description: This paper focuses on the use of teacher value-added estimates to assess the distribution of effective teaching across students of varying socioeconomic disadvantage. We use simulation methods to examine the extent to which different commonly used teacher-value estimators accurately capture both the rank correlation between true and estimated teacher effects and the distribution of effective teaching across student characteristics in the presence of classroom composition effects. Varying the amount of teacher sorting by student characteristics, the within-teacher variability in classroom composition, and the amount of student learning decay, we compare aggregated residuals, teacher random effects, and teacher fixed effects models estimated in both levels and gains, with and without controls for classroom composition. We find that models estimated in levels more accurately capture the rank correlation between true and estimated teacher effects than models estimated in gains, but levels are not always preferable for recovering the correlation between teacher value-added and student achievement. For recovering that correlation, aggregated residuals models appear preferable when sorting is not present, though fixed effects models perform better in the presence of sorting. Because the true amount of sorting is never known, we recommend that analysis incorporate contextual information into their decisions about model choice.
Disentangling Disadvantage : Can We Distinguish Good Teaching from Classroom Composition?
Creators: name: Steele, Jennifer
name: Engberg, John
name: Zamarro, Gema
name: Saavedra, Juan Esteban
Publisher: name: American University
Year: 2023

description: This paper focuses on the use of teacher value-added estimates to assess the distribution of effective teaching across students of varying socioeconomic disadvantage. We use simulation methods to examine the extent to which different commonly used teacher-value estimators accurately capture both the rank correlation between true and estimated teacher effects and the distribution of effective teaching across student characteristics in the presence of classroom composition effects. Varying the amount of teacher sorting by student characteristics, the within-teacher variability in classroom composition, and the amount of student learning decay, we compare aggregated residuals, teacher random effects, and teacher fixed effects models estimated in both levels and gains, with and without controls for classroom composition. We find that models estimated in levels more accurately capture the rank correlation between true and estimated teacher effects than models estimated in gains, but levels are not always preferable for recovering the correlation between teacher value-added and student achievement. For recovering that correlation, aggregated residuals models appear preferable when sorting is not present, though fixed effects models perform better in the presence of sorting. Because the true amount of sorting is never known, we recommend that analysis incorporate contextual information into their decisions about model choice.
Cipriscola fasciata
Creators: name: Santos-Silva, Antonio
name: Botero, Juan Pablo
name: Nascimento, Francisco Eriberto de Lima
name: Martins, David dos Santos
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Cipriscola
Cipriscola fasciata

description: Cipriscola fasciata (Thomson, 1860) (Fig. 19)
 Material examined: BRAZIL, Espírito Santo: Aracruz, 19°50′14″S, 40°05′44″W, 1 ♂, 24.VIII.2006, J.B. Silva col. (SSA); Aracruz, 19°48′35″S, 40°05′42″W, 1 ♂, 03.VI.1984, P.M. Vieira col. (SSA).
 This species was described from Brazil (no further details). Currently, it is known from Colombia, Peru, Venezuela, Brazil (Pará, Mato Grosso, Mato Grosso do Sul, Maranhão, Pernambuco, Minas Gerais, Rio de Janeiro, São Paulo, Rio Grande do Sul), Peru, Bolivia (Santa Cruz, Tarija), Paraguay, Argentina (Misiones, Chaco, Corrientes) (Monné, 2020b). However, Zajciw (1974) recorded the species from the Brazilian state of Espírito Santo, and Menezes et al. (2012) listed it in the Brazilian state of Bahia, two state records omitted in Monné (2020b).
description: Published as part of Santos-Silva, Antonio, Botero, Juan Pablo, Nascimento, Francisco Eriberto de Lima & Martins, David dos Santos, 2020, New species, new records, and taxonomical notes in Cerambycidae (Coleoptera) from the state of Espírito Santo (Brazil), pp. 1-22 in Papéis Avulsos de Zoologia (Pap. Avulsos Zool., S. Paulo) (Pap. Avulsos Zool., S. Paulo) 60 on page 6, DOI: 10.11606/1807-0205/2020.60.45, http://zenodo.org/record/4614833
A TUDÁS MINT VERSENYELŐNY – MIT NYERHETÜNK KULCSKOMPETENCIÁINK FEJLESZTÉSÉVEL?
Creators: name: Bata, Miléna
name: Herneczky, Andrea
name: Bata, Miléna
name: Herneczky, Andrea
Publisher: name: Unknown
Year: 2017
Subjects: subject: Teaching/Communication/Extension/Profession
subject: tudás
subject: lifelong learning
subject: kulcskompetencia
subject: kompetenciafejlesztés
subject: knowledge
subject: key competences
subject: competence development

description: Mi a tudás? Hogyan kamatoztatható a tanulási folyamat során megszerzett tudás életünk különböző területein? Milyen a kulcskompetenciák fontosságának megítélése a felsőoktatásban részt vevő hallgatók és oktatóik körében? Ezek a kérdések jelentették kutatásunk alapját, melyek egytől egyig a folyamatosan változó gazdasági környezet problémás kérdései közé tartoznak mind az oktatás, mind a munkaerőpiac szempontjából. A tudás fogalmának szubjektivitása, az oktatási intézmények és a munkáltatók különböző elvárásai, illetve a kompetenciafejlesztés nehézségei egy olyan határterület vizsgálatát tették lehetővé számunkra, melynek középpontjában az emberi tényező áll, ebből adódóan igyekeztünk feltárni a téma gazdaságai vonatkozásai mellett az egyes pszichológiai és didaktikai részterületeket is. Eredményeink alapján elmondhatjuk, hogy a felsőoktatásban részt vevő hallgatók prioritásai sem az oktatók, sem a munkáltatók elvárásaival nincsenek teljes összhangban a kulcskompetenciák tekintetében. Szekunder kutatásunk során jelentős eltéréseket találtunk ezen kérdéskörben is, melynek mélyrehatóbb vizsgálata a közeljövőben fog elkezdődni, és várhatóan primer vizsgálatunk eredményei is megerősítik majd ezt az feltevést. ---------- What is knowledge? How to use the knowledge in various areas of our lives? Which are the most important key competences for students and teachers in higher education? These are the problematic issues of the ever-changing economic environment, mostly for education and the labor market. The subjectivity of knowledge concept, different expectations of educational institutions and employers and competency development difficulties were allowed us to examine a border region which focuses on the human factor, therefore we had to examine not just the economic aspects but psychological and didactic subdivisions too. Based on our results we can say that students’ priorities in higher education are not fully consistent neither the teachers’ nor the employers’ expectations. During our research secondary significant differences were found in this range of questions and the primary investigation will be initiated in the near future so we hope the result will confirm the secondary perceptions.
Delaying Leading Edge Vortex Detachment by Plasma Flow Control at Topologically Critical Locations
Creators: name: Kissing, Johannes
name: Stumpf, Bastian
name: Kriegseis, Jochen
name: Hussong, Jeanette
name: Tropea, Cameron
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Flapping wing propulsion offers unrivalled manoeuvrability and efficiency at low flight speeds and in hover. These advantages are attributed to the leading edge vortex developing on an unsteady wing, which induces additional lift. We propose and validate a manipulation hypothesis that allows prolongation of the leading edge vortex growth phase, by delaying its detachment with the aid of flow control. This approach targets an overall lift increase on unsteady airfoils. A dielectric barrier discharge plasma actuator is successfully used to compress secondary structures upstream of the main vortex on a pitching and plunging flat plate. To determine flow control timing and location, the tangential velocity on the airfoil surface is used, which is also used to quantify topological effects of flow control. This flow control is then tested for different motion kinematics and on a NACA 0012 airfoil. Significant increase of the peak circulation of the leading edge vortex of about 20% for all cases with flow control indicates that this approach is applicable for various kinematics, dynamics and airfoil types.
Do Financial Incentives Help Low-Performing Schools Attract and Keep Academically Talented Teachers? Evidence from California
Creators: name: Steele, Jennifer
name: Murnane, Richard J.
name: Willett, John B.
Publisher: name: American University
Year: 2023

description: This study capitalizes on a natural experiment that occurred in California between 2000 and 2002. In those years, the state offered a competitively allocated $20,000 incentive called the Governor's Teaching Fellowship (GTF) aimed at attracting academically talented, novice teachers to low-performing schools and retaining them in those schools for at least four years. Taking advantage of data on the career histories of 27,106 individuals who pursued California teaching licenses between 1998 and 2003, we use an instrumental variables strategy to estimate the unbiased impact of the GTF on the decisions of recipients to begin working in low-performing schools within two years after licensure program enrollment. We estimate that GTF recipients would have been less likely to teach in low-performing schools than observably similar counterparts had the GTF not existed, but that acquiring a GTF increased their probability of doing so by 28 percentage points. Examining retention patterns, we find that 75 percent of both GTF recipients and non-recipients who began working in low performing schools remained in such schools for at least four years.