cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Singlet-Triplet Transition Tuned by Asymmetric Gate Voltages in a Quantum Ring
Creators: name: Fuhrer, A.
name: Ihn, Thomas
name: Ensslin, Klaus
name: Wegscheider, Werner
name: Bichler, Max
Publisher: name: Universität Regensburg
Year: 2003
Subjects: subject: 530 Physik
subject: 73.23.–b, 03.67.Lx

description: Wave-function and interaction effects in the addition spectrum of a Coulomb-blockaded many-electron quantum ring are investigated as a function of asymmetrically applied gate voltages and magnetic field. Hartree and exchange contributions to the interaction are quantitatively evaluated at a crossing between states extended around the ring and states which are more localized in one arm of the ring. A gate tunable singlet-triplet transition of the two uppermost levels of this many-electron ring is identified at zero magnetic field.
Мастилоуловлювач потужних електричних машин : Патент України на винахід № 113647 від 27.02.2017
Creators: name: Миколайович, Мінко Олександр
name: Гордієнко Володимир Юрійович
name: Грубой Олександр Петрович
name: Володимирівна, Шевченко Валентина
Publisher: name: Zenodo
Year: 2017
Subjects: патент на винахід
електричні машини
важке електромашинобудування
турбогенератори
мастилоуловлювач

description: Українською: [Мінко О.Н., Гордієнко В.Ю., Грубой О.П., Шевченко В.В. Мастилоуловлювач потужних електричних машин : Патент на винахід № 113647 від 27.02.2017, заяв. № а 2014 13100 від 08.12.2014 (власник Державне підприємство "Завод "Електроважмаш", Харків, Україна) // Патенти і винаходи, бюл. №4. – Україна, Київ: Державна служба інтелектуальної власності, ДП "Український інститут промислової власності", 2017. – 5 с. https://doi.org/10.5281/zenodo.2600846]

Мастилоуловлювач потужних електричних машин належить до важкого електромашинобудування. Мастилоуловлювач, що складається зі звареного металевого корпусу, який має роз'єм по горизонтальній осі, фланці якого сполучаються болтовим з'єднанням. Маслоуловлювач виконаний таким чином, що створює пустотілу кільцеву камеру, доступ до якої наявний на внутрішньому діаметрі мастилоуловлювача. При цьому в нижній точці камери виконаний перший циліндричний отвір, який розташований горизонтально, в стінці, яка примикає до підшипника турбогенератора. На внутрішньому діаметрі корпусу встановлені ущільнювальні гребінці, закріплені в ньому карбуванням і потайними гвинтами. При цьому в нижній частині корпусу між гребінцями виконані циліндричні отвори, які з'єднують зовнішній простір корпусу мастилоуловлювача з його камерою. В запропонованій конструкції корпус виконаний з додатковою камерою, аналогічною основній, яка розташована на стороні маслоуловлювача, протилежній від підшипника турбогенератора. Мастилоуловлювач згаданої конструкції, в якому в бічній стінці нижньої частини додаткової камери виконано другий циліндричний отвір, з'єднуючий її з основною камерою. При цьому в нижній частині основної камери в протилежній стінці виконаний другий отвір більшим діаметром, ніж перший. Використання запропонованої конструкції знизить величину протікання масла, що проходить через гребінці ущільнень мастилоуловлювача, здійснить ефективний відвід масла з міжгребінцевого простору і камер мастилоуловлювача. Мастилоуловлювач потужних електричних машин належить до області електромашинобудування, зокрема до мастилоуловлювачів крупних електричних машин, наприклад турбогенераторів.

Ключові слова: патент на винахід, електричні машини, важке електромашинобудування, турбогенератори, мастилоуловлювач

Репозіторій НТУ "ХПІ" - відкрити pdf. Архів НТУ "ХПІ" - відкрити pdf.

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На сайті Укрпатенту.
description: Станом на 11.04.2019 дію патента припинено, але може бути поновлено.
Spin-sensitive bleaching and spin relaxation in QWs
Creators: name: Schneider, Petra
name: Ganichev, Sergey
name: Kainz, Josef
name: Rössler, Ulrich
name: Wegscheider, Werner
name: Weiss, Dieter
name: Prettl, Wilhelm
name: Belkov, Vassilij
name: Golub, Leonid E.
name: Schuh, Dieter
Publisher: name: Universität Regensburg
Year: 2003
Subjects: subject: Fractional quantum Hall effect; Composite fermions; Cyclotron resonance; Effective mass
subject: 530 Physik
subject: 72.25.Dc; 72.25.Rb

description: Spin-sensitive saturation of absorption of infrared radiation has been investigated in p-type GaAs QWs. It is shown that the absorption saturation of circularly polarized radiation is mostly controlled by the spin relaxation time of the holes. The saturation behavior has been investigated for different QW widths and in dependence on the temperature with the result that the saturation intensity substantially decreases with narrowing of QWs. Spin relaxation times were experimentally obtained by making use of calculated (linear) absorption coefficients for inter-subband transitions.
CHPM2030 Deliverable D5.5: Environmental impact assessment framework
Creators: name: Szanyi, János
name: Medgyes, Tamás
name: Kóbor, Balázs
name: Osvald, Máté
Publisher: name: Zenodo
Year: 2019
Subjects: Environmental Impact Assessment
CHPM concept

description: The ultimate objective of this current document is to provide a comprehensive guideline for the future adopters of the CHPM concept to deliver a well structured and detailed Environmental Impact Assessment that meets the relevant standards and legislative framework of the hosting country, where the project is going to be developed.

Our goal was to compile a rather general approach with some specific details corresponding to the applied technologies, instead of coming up with a made-up site and specifying all aspects accordingly. By doing so we believe that we granted the future EIA practitioners the flexibility to adjust this approach to their corresponding project.
Curved two-dimensional electron gases
Creators: name: Lorke, Axel
name: Böhm, Stefan
name: Wegscheider, Werner
Publisher: name: Universität Regensburg
Year: 2003
Subjects: subject: Epitaxial lift-off; Quantum Hall effect; Curved electron gases
subject: 530 Physik
subject: 73.43.-f; 73.21.-b; 75.60.-d

description: A method is introduced which makes it possible to fabricate non-planar two-dimensional electron gases. Making use of the “epitaxial lift-off” process, patterned, gated and contacted heterostructures are transferred from their crystalline substrate onto small glass tubes with diameters of a few millimeters. The transport properties of two-dimensional electron gases inside these curved semiconductor films are characterized by low-temperature magnetoresistance measurements. In the longitudinal resistance we find weak Shubnikov–de Haas oscillations, which are periodic in B−1. The transverse resistance exhibits well-developed quantum Hall plateaus at low magnetic fields. At high fields, we observe a pronounced breakdown of the Hall effect. The experimental results are compared with simple theoretical models.
Spin polarization phenomena in dense neutron matter at a strong magnetic field
Creators: name: Isayev, A. A.
name: Yang, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Spin polarized states in neutron matter at strong magnetic fields up to $10^{18}$ G are considered in the model with the Skyrme effective interaction. Analyzing the self-consistent equations at zero temperature, it is shown that a thermodynamically stable branch of solutions for the spin polarization parameter as a function of density corresponds to the negative spin polarization when the majority of neutron spins are oriented oppositely to the direction of the magnetic field. Besides, it is found that in a strong magnetic field the state with the positive spin polarization can be realized as a metastable state at the high density region in neutron matter. At finite temperature, the entropy of the thermodynamically stable branch demonstrates the unusual behavior being larger than that for the nonpolarized state (at vanishing magnetic field) above certain critical density which is caused by the dependence of the entropy on the effective masses of neutrons in a spin polarized state.
description: Report at XXXIX International Symposium on Multiparticle Dynamics ISMD 2009, 4-9 September, "Gold Sands", Gomel Region, Belarus
อลังการแห่งขบวนแห่องค์เทพรอบเมือง: การสร้างสรรค์ภาพถ่ายผ่านสื่อสัญญะทางวัฒนธรรมเชิงการท่องเที่ยว
Creators: name: ปัทมาสน์ พิณนุกูล
Publisher: name: คณะมนุษยศาสตร์และสังคมศาสตร์ มหาวิทยาลัยราชภัฏบ้านสมเด็จเจ้าพระยา
Year: 2564
Subjects: ขบวนแห่องค์เทพสื่อสัญญะ,วัฒนธรรมเชิงการท่องเที่ยว
Gods Street Procession
Symbolic Expression
Cultural Tourism

description: วารสารมนุษยศาสตร์และสังคมศาสตร์ มหาวิทยาลัยราชภัฏบ้านสมเด็จเจ้าพระยา, 15, 2, 304-330
Aharonov-Bohm effect of a quantum ring in the Kondo regime
Creators: name: Keyser, U. F.
name: Fühner, C.
name: Haug, R. J.
name: Wegscheider, Werner
name: Bichler, Max
name: Abstreiter, Gerhard
Publisher: name: Universität Regensburg
Year: 2003
Subjects: subject: 530 Physik
subject: 72.15.Qm; 73.21.La; 73.23.Hk ; 73.40.Gk

description: We investigate a small tuneable quantum ring fabricated by direct local oxidation using an atomic force microscope. The device contains very few electrons and is tuned into the Kondo regime. We study this Kondo effect by temperature dependent measurements. At finite bias voltages we observe additional peaks. These vanish with increasing temperature indicating Kondo correlations for these excited states. Additionally, the geometry of our device allows to study Aharonov-Bohm oscillations in the Kondo regime for a device containing less than ten electrons. We observe a modulation of the Kondo effect with a reduced Aharonov-Bohm period explained by electron-electron interaction in our small quantum ring.
Spectroscopic study of impurities and associated defects in nanodiamonds from Efremovka (CV3) and Orgueil (CI) meteorites
Creators: name: Shiryaev, A. A.
name: Fisenko, A. V.
name: Vlasov, I. I.
name: Semjonova, L. F.
name: Nagel, P.
name: Schuppler, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The results of spectroscopic and structural studies of phase composition and of defects in nanodiamonds from Efremovka (CV3) and Orgueil (CI) chondrites indicate that nitrogen atomic environment in meteoritic nanodiamonds (MND) is similar to that observed in synthetic counterparts produced by detonation and by the Chemical Vapour Deposition (CVD)-process. Most of the nitrogen in MND appears to be confined to lattice imperfections, such as crystallite/twin boundaries and other extended defects, while the concentration of nitrogen in the MND lattice is low. It is suggested that the N-rich sub-population of MND grains may have been formed with high growth rates in environments rich in accessible N (i.e., N in atomic form or as weakly bonded compounds). For the first time the silicon-vacancy complex (the "silicon" defect) is observed in MND by photoluminescence spectroscopy.
description: 33 pages, 5 figures, submitted to Geochimica et Cosmochimica Acta
Kelvin probe spectroscopy of a two-dimensional electron gas below 300 mK
Creators: name: Vancura, T.
name: Kicin, S.
name: Ihn, Thomas
name: Ensslin, Klaus
name: Bichler, Max
name: Wegscheider, Werner
Publisher: name: Universität Regensburg
Year: 2003
Subjects: subject: gallium arsenide, aluminium compounds, III-V semiconductors, two-dimensional electron gas, atomic force microscopy, electron density, semiconductor heterojunctions
subject: 530 Physik
subject: 73.63.-b

description: A scanning force microscope with a base temperature below 300 mK is used for measuring the local electron density of a two-dimensional electron gas embedded in a Ga[Al]As heterostructure. At different separations between atomic force microscope tip and sample, a dc voltage is applied between the tip and the electron gas while simultaneously recording the frequency shift of the oscillating tip. Using a plate capacitor model, the local electron density can be extracted from the data. The result coincides within 10% with the data obtained from transport measurements.
Hubble and Spitzer Space Telescope Observations of the Debris Disk around the Nearby K Dwarf HD 92945
Creators: name: Golimowski, D. A.
name: Krist, J. E.
name: Stapelfeldt, K. R.
name: Chen, C. H.
name: Ardila, D. R.
name: Bryden, G.
name: Clampin, M.
name: Ford, H. C.
name: Illingworth, G. D.
name: Plavchan, P.
name: Rieke, G. H.
name: Su, K. Y. L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: [ABRIDGED] We present the first resolved images of the debris disk around the nearby K dwarf HD 92945. Our F606W (V) and F814W (I) HST/ACS coronagraphic images reveal an inclined, axisymmetric disk consisting of an inner ring 2".0-3".0 (43-65 AU) from the star and an extended outer disk whose surface brightness declines slowly with increasing radius 3".0-5".1 (65-110 AU) from the star. A precipitous drop in the surface brightness beyond 110 AU suggests that the outer disk is truncated at that distance. The radial surface-density profile is peaked at both the inner ring and the outer edge of the disk. The dust in the outer disk scatters neutrally but isotropically, and it has a low V-band albedo of 0.1. We also present new Spitzer MIPS photometry and IRS spectra of HD 92945. These data reveal no infrared excess from the disk shortward of 30 micron and constrain the width of the 70 micron source to < 180 AU. Assuming the dust comprises compact grains of astronomical silicate with a surface-density profile described by our scattered-light model of the disk, we successfully model the 24-350 micron emission with a minimum grain size of a_min = 4.5 micron and a size distribution proportional to a^-3.7 throughout the disk, but with a maximum grain size of 900 micron in the inner ring and 50 micron in the outer disk. Our observations indicate a total dust mass of ~0.001 M_earth. However, they provide contradictory evidence of the dust's physical characteristics: its neutral V-I color and lack of 24 micron emission imply grains larger than a few microns, but its isotropic scattering and low albedo suggest a large population of submicron-sized grains. The dynamical causes of the disk's morphology are unclear, but recent models of dust creation and transport in the presence of migrating planets indicate an advanced state of planet formation around HD 92945.
description: 29 pages, 10 figures; to be published in The Astronomical Journal
Small Hairy Black Holes in $AdS_5 \times S^5$
Creators: name: Bhattacharyya, Sayantani
name: Minwalla, Shiraz
name: Papadodimas, Kyriakos
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study small hairy black holes in a consistent truncation of ${\cal N}=8$ gauged supergravity that consists of a single charged scalar field interacting with the metric and a U(1) gauge field. Small very near extremal RNAdS black holes in this system are unstable to decay by superradiant emission. The end point of this instability is a small hairy black hole that we construct analytically in a perturbative expansion in its charge. Unlike their RNAdS counterparts, hairy black hole solutions exist all the way down to the BPS bound, demonstrating that ${\cal N}=4$ Yang Mills theory has an ${\cal O}(N^2)$ entropy at all energies above supersymmetry. At the BPS bound these black holes reduce to previously discussed regular, supersymmetric horizon free solitons. We use numerical methods to continue the construction of these solitons to large charges and find that the line of soliton solutions terminates at a singular solution $S$ at a finite charge. We conjecture that a one parameter family of singular supersymmetric solutions, which emerges out of $S$, constitutes the BPS limit of hairy black holes at larger values of the charge. At leading order in their charge, the thermodynamics of the small hairy black holes constructed in this paper turns out to be correctly reproduced by modeling these objects as a non interacting mix of an RNAdS black hole and the supersymmetric soliton in thermal equilibrium. Assuming that a similar non interacting model continues to apply upon turning on angular momentum, we also predict a rich family of rotating hairy black holes, including new hairy supersymmetric black holes. This analysis suggests interesting structure for the space of (yet to be constructed) hairy charged rotating black holes in $AdS_5\times S^5$, particularly in the near BPS limit.
description: 66 pages, 25 figures, JHEP format
The targum (1879:Dec.)
Creators: name: No Name Supplied
Publisher: name: Targum Association
Year: 1879

description: Some University historians indicate that the Targum was first published as an annual in 1867, but of this we have no extant evidence. In January 1869, the Targum as we now know it, made its appearance as a monthly paper that concerned itself with student “literary contributions” and college news as well as serving as a vehicle for bringing news to alumni and the general public. The newspaper, which originally was for sale, varied in frequency over the years as did its title (The Targum, Rutgers Targum, Rutgers Daily Targum, and Daily Targum). The newspaper has continuously been published since 1869 with the exception of 19 months during the second world war, between February 1944 and October 1945. The Targum was published by the students of Rutgers College, and later Rutgers University—New Brunswick represented through the years as the Targum Association, Rutgers Targum Association, and Rutgers College Targum. As a student organization, the Targum operated under the oversight of the dean of students and student government but in October 1980, the Targum became an independent college paper.
Nonradiative relaxation times in diagonal transition Si/SiGe quantum cascade structures
Creators: name: Bormann, I.
name: Brunner, Konrad
name: Hackenbuchner, S.
name: Abstreiter, Gerhard
name: Schmult, Stefan
name: Wegscheider, Werner
Publisher: name: Universität Regensburg
Year: 2003
Subjects: subject: Ge-Si alloys, semiconductor materials, silicon, elemental semiconductors, semiconductor quantum wells, nonradiative transitions, electroluminescence, k.p calculations, carrier lifetime, carrier relaxation time, population inversion
subject: 530 Physik
subject: 78.60.Fi; 78.67.De; 73.21.Fg;

description: Here, we explore experimentally and theoretically the possibility to prolong the upper hole state nonradiative lifetime of Si/SiGe quantum cascade (QC) structures by using a spatially indirect diagonal transition between two SiGe quantum well ground states. With the recent observation of well resolved midinfrared electroluminescence from heavy hole intersubband transitions in Si/SiGe valence-band QC structures, a Si-based QC laser seems no longer to be out of reach. A long carrier lifetime and maybe population inversion, however, appear to be impossible for structure designs with a vertical intersubband transition studied so far. This is due to the nonresonant behavior of deformation potential scattering dominant in unipolar SiGe. We report on calculations of the band structure using a six-band k·p model and of hole deformation potential scattering that predict significantly increased nonradiative lifetimes for large barrier thickness, reaching about 20 ps for 35 Å Si barrier layer width. Electroluminesence measurements of a series of QC structures with varied barrier width reveal comparable efficiencies and the deduced lifetimes confirm our model calculations.
Depth concentrations of deuterium ions implanted into some pure metals and alloys
Creators: name: Didyk, A. Yu.
name: Wiśniewski, R.
name: Kitowski, K.
name: Kulikauskas, V.
name: Wilczynska, T.
name: Shiryaev, A. A.
name: Zubavichus, Ya. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Pure metals (Cu, Ti, Zr, V, Pd) and diluted Pd-alloys (Pd-Ag, Pd-Pt, Pd-Ru, Pd-Rh) were implanted by 25 keV deuterium ions at fluences in the range (1.2÷2.3)x1022 D+/m2. The post-treatment depth distributions of deuterium ions were measured 10 days and three months after the implantation using Elastic Recoil Detection Analysis (ERDA) and Rutherford Backscattering (RBS). Comparison of the obtained results allowed to make conclusions about relative stability of deuterium and hydrogen gases in pure metals and diluted Pd alloys. Very high diffusion rates of implanted deuterium ions from V and Pd pure metals and Pd alloys were observed. Small-angle X-ray scattering revealed formation of nanosized defects in implanted corundum and titanium.
description: 12 pages, 9 figures
The Mississippian Section at Paddys Bluff, Crittenden County, Kentucky
Creators: name: Counts, Ron
name: Denny, F. Brett
name: Hower, James C.
name: Lasemi, Zakaria
name: Norby, Rodney D.
name: Potter, Paul E.
name: Waninger, Scott
name: Williams, David A.
Publisher: name: Kentucky Geological Survey, University of Kentucky
Year: 2009

description: Abstract:
Paddys Bluff (Figs. 1-3) is located on the south side of the Illinois Basin on the Cumberland River, 1.7 miles downstream from Dycusburg in Crittenden County, Ky., in Carter coordinate section 23-I-16 and ecoregion 71f of the Western Highland Rim of Kentucky (Woods and others, 2002). This bluff is on a right-descending bend 18 liver miles above its junction with the Ohio River at Smithland, Livingston County. The bluff (Figs. 4A, B) is locally famous as the location for a scene from the classic 1962 film, "How the West Was Won,' a winner of three Academy Awards, starling James Stewart, John Wayne, and others.
We observed Paddys Bluff from the starboard Texas deck of the steamboat Della Queen one rainy morning in October 2005; the thick, persistent white bed midway in the bluff especially attracted our attention (Fig. 4). Paddys Bluff is the best natural exposure of Mississippian limestone between Barkley Dam and the Ohio River, a distance of 31 river miles. The bluff, some 1,700 feet long (Fig. 4), rises 160 feet above the Cumberland River and deflects it about 16° into a long westward reach, the river removing all talus at the base of the bluff. The bluff lies in a graben between two inferred faults st liking N40 to 45°E (Amos and Hayes, 1974). Readily seen in the limestones along the river at the base of the bluff is a prominent joint set parallel to these faults. This bluff is mapped on the Dycusburg geologic quadrangle map (Table 1) as the combined Salem and St. Louis Limestones (Amos and Hayes, 1974) and is capped by at least 15 feet of poorly exposed gravel of the Cretaceous Tuscaloosa Formation (Olive, 1980). Across the river less than 2 miles distant are scattered "continental deposits" of reddish brown Lafayette-type, sandy cobble-gravel (Olive, 1980), below which are outliers of the Cretaceous Tuscaloosa Formation; both cap hilltops of the same underlying Mississippian limestones.
Why is Paddys Bluff of interest? There are at least six reasons to study it. First, can the Salem and St. Louis Limestones be individually identified at the bluff? If, in fact, they can be separated, the upper boundary of sequence S4 recognized in the Lake Cumberland area of south-central Kentucky by Khetani and Read (2002, Fig. 12) extends much farther west. Still another challenge is the enigmatic, massive, fine-grained, whitish-weathering carbonate mudstone bed, unit C of our section, high in the bluff. What does it represent? How widespread is it? Why do beds below rt have a strong petroliferous odor and not those above it? Why are some of the coral heads (Fig. 5) at Paddys Bluff overturned and others not? The last challenge is the bluff itself: Why is it there and how long has it been there?
Intraspecific variation and thermal acclimation effects on mitochondrial function in a eurythermal teleost (Fundulus heteroclitus)
Creators: name: Chung-Chun-Lam, Dillon James
Publisher: name: University of British Columbia
Year: 2018

description: Ambient temperature is a pervasive environmental stressor for ectotherms, with effects from individual atoms to the population level. Indeed, the effects of temperature on organismal performance are suggested to constrain species’ geographic distributions. Aerobic metabolism is proposed to underlie the thermal limits of organisms, with thermal constraints occurring at the level of the mitochondrion due to its position at the terminus of the O₂ transport cascade and as the primary site of cellular ATP production. Despite this theoretical link, there is limited understanding of the relationship between mitochondrial function and thermal tolerance, particularly for interacting responses among multiple biological timescales. I used two subspecies of Atlantic killifish (Fundulus heteroclitus) to characterize mitochondrial responses to acute thermal shifts following thermal acclimation to 5, 15, and 33 °C, and putative local adaptation. Northern killifish exhibited higher liver mitochondrial respiratory capacity and lower mitochondrial O2 binding affinity when compared to the southern subspecies. Subspecies variation in mitochondrial function was associated with differences in electron transport system (ETS) complex IV capacity. Decreasing acclimation temperature increased liver mitochondrial respiratory capacity and decreased mitochondrial O₂ binding affinity in both subspecies. Thermal acclimation effects on liver mitochondrial respiratory capacity were associated with ETS complex I. In contrast, heart and brain mitochondrial respiratory capacity decreased following acclimation to both high and low thermal extremes and did not differ between subspecies. Thermal acclimation effects on liver mitochondrial performance were not associated with increased reactive oxygen species production or a loss of mitochondrial proton motive force at high assay temperatures. Liver mitochondrial membrane composition varied in response to thermal acclimation and differed between subspecies, with thermal acclimation effects being largely consistent between subspecies. Mitochondrial lipid remodeling was primarily associated with changes in specific phospholipid species, suggesting a role for targeted membrane remodeling as a mechanism underlying variation in mitochondrial function. My data provide evidence for variation in mitochondrial function as a mechanism that differentiates aerobic and thermal performance between F. heteroclitus subspecies and that is involved in thermal acclimation responses. These mitochondrial responses likely underlie the aerobic performance limits of ectotherms and influence species’ fitness and geographic distributions.
Investigating the effect of handover on latency in early 5G NR deployments for C-V2X network planning
Creators: name: Clancy, Joseph
name: Mullins, Darragh
name: Ward, Enda
name: Denny, Patrick
name: Jones, Edward
name: Glavin, Martin
name: Deegan, Brian
Publisher: name: University of Limerick
Year: 2023
Subjects: classificationCode: 40
subject: Engineering

description: Vehicle-to-Everything (V2X) communication technology aims to enhance intelligent vehicles’ coordination and perception by enabling interactions with other vehicles, road users, and infrastructure. Although 4th and 5th generation cellular technologies (4G LTE and 5G NR) can support non-safety V2X communication, their design, rooted in multimedia and telephony, doesn’t align well with safety-critical applications. Despite the advancements of 5G NR over 4G LTE, ensuring reliable Quality-of-Service (QoS) metrics remains a notable concern. The process of handover, a core cellular network function, significantly contributes to the challenges in cellular communication reliability. To assess handover’s impact on latency in V2X communication scenarios, a driving-focused measurement campaign was executed on an early 5G NR-enabled commercial cellular network. Findings reveal that, in terms of its effect on end-user latency, the more mature 4G LTE network displays on average 63% (intra-freq.) and 36% (inter-freq.) lower latency costs when performing handovers compared to early 5G NR deployments. Notably, inter-generation handovers (4G to 5G and vice versa) exhibit 24% (intra-freq.) and 10% (inter-freq.) higher average latency costs with respect to other handover types. Furthermore, discernible variations in network reliability emerge between distinct V2X scenarios such as urban and rural environments. The prevailing reliability concerns tied to present handover algorithms hold substantial weight, as they undermine intelligent vehicles’ trust in network-received information. Consequently, these outcomes underscore the urgency for designing and implementing handover strategies better suited to the dynamic mobility characteristics of intelligent vehicles across diverse V2X scenarios.
Simulation of integrated circuits: numerical techniques
Creators: name: Lory, Peter
Publisher: name: Universität Regensburg
Year: 1988
Subjects: subject: VLSI; waveform relaxation; successive overrelaxation; optimal relaxation parameter
subject: 330 Wirtschaft

description: Relaxation-based techniques for the transient analysis of large-scale integrated circuits are promising candidates for a new generation of circuit simulators. The present note investigates the convergence of the discretized waveform relaxation. It is demonstrated that a SOR technique has the potential of beeing significantly faster than the conventional waveform relaxation Gauss-Seidel method. The determination of the optimal relaxation parameter is decisive and is discussed for the case of a general linear model problem.
FORMING VILLAGE REGULATIONS IN SUPPORTING GOVERNANCE VILLAGE GOVERNMENT
Creators: name: ALI RAHMAN
name: HAMZAH HALIM
name: ACHMAD RUSLAN
name: MARTEN ARIE
name: ABDUL RAZAK
name: M. DJAFAR SAIDI
Publisher: name: Zenodo
Year: 2023
Subjects: Regulation; Village; Government.

description: Abstract
Determination of Village Regulations is an elaboration of the various authorities owned by the Village referring to the provisions of higher laws and regulations. To optimize village governance, it is necessary to increase the knowledge and skills of the Village Government regarding the authority and form of village regulations so that they are village regulations. The research method used is normative research with a statutory and conceptual approach. Perdes are a form of legislation which is a further elaboration of laws and regulations with a higher position which are formed in accordance with statutory regulations and taking into account the social conditions of the local village community. Formation of village regulations in support of governance village government through stages. The first step consists of the planning stage, the preparation stage, the discussion stage: the determination and promulgation stage and the socialization stage, then the second step is evaluation and clarification.
title: «Παλιό Παρθεναγωγείο Δημητσάνας» αποκατάσταση και ανάπλαση της ευρύτερης περιοχής

title: "Old Parthenagogio of Dimitsana” restoration and redevelopment in the surrounding area
Creators: name: Μαλεβιτης Ιωαννης
Publisher: name: Technical University of Crete
Year: 2023

description: Η Δημητσάνα είναι ένας παραδοσιακός, πετρόχτιστος οικισμός με αξιόλογη αρχιτεκτονική, χτισμένος στο διάσελο δύο λόφων, στις Νοτιοδυτικές πλαγιές του όρους Μαινάλου. Κυριαρχεί η πέτρα και οι έντονες κλίσεις των στενών δρόμων.
Το παλιό Παρθεναγωγείο της Δημητσάνας, τυπικό διτάξιου δημοτικού σχολείου με χαρακτηριστικό τις εξάγωνες πελεκητές πέτρες στην όψη, αποκαθίσταται με συμβατά υλικά και επεκτείνεται περιλαμβάνοντας ένα αμφιθέατρο. Παράλληλα, συνδέεται άμεσα με έναν υπόγειο χώρο στάθμευσης και επαναχρησιμοποιείται ως Κέντρο Δια Βίου Μάθησης.
Σε απόσταση τριάντα μέτρων βρίσκονται τα ερείπια του αρχοντικού Παπακουρή, ένα τριώροφο πυργόσπιτο. Το αρχοντικό αποκαθίσταται και επαναχρησιμοποιείται ως ξενώνας για τις ανάγκες του Κέντρου Δια Βίου Μάθησης και του παρακειμένου Συνεδριακού Πολιτιστικού Κέντρου.
Και τα δύο κτίρια συνδέονται με τον νέο χώρο στάθμευσης, ο οποίος εναρμονίζεται στον ιστό του οικισμού, εκμεταλλευόμενος τα υλικά και το ανάγλυφο της περιοχής.
Δύο ξεχωριστά δημόσια κτίρια, ένας υφιστάμενος χώρος στάθμευσης και οι τριγύρω δρόμοι συνδέονται και επανασχεδιάζονται για να χρησιμοποιηθούν ως σύνολο από κατοίκους και επισκέπτες της περιοχής και να ενισχύσουν την πολιτιστική ζωή και την  εκπαίδευση στη Δημητσάνα.
The targum (1881:Feb. 18)
Creators: name: No Name Supplied
Publisher: name: Targum Association
Year: 1881

description: Some University historians indicate that the Targum was first published as an annual in 1867, but of this we have no extant evidence. In January 1869, the Targum as we now know it, made its appearance as a monthly paper that concerned itself with student “literary contributions” and college news as well as serving as a vehicle for bringing news to alumni and the general public. The newspaper, which originally was for sale, varied in frequency over the years as did its title (The Targum, Rutgers Targum, Rutgers Daily Targum, and Daily Targum). The newspaper has continuously been published since 1869 with the exception of 19 months during the second world war, between February 1944 and October 1945. The Targum was published by the students of Rutgers College, and later Rutgers University—New Brunswick represented through the years as the Targum Association, Rutgers Targum Association, and Rutgers College Targum. As a student organization, the Targum operated under the oversight of the dean of students and student government but in October 1980, the Targum became an independent college paper.
Combined atomic force microscope and electron-beam lithography used for the fabrication of variable-coupling quantum dots
Creators: name: Rogge, M. C.
name: Fühner, C.
name: Keyser, U. F.
name: Haug, R. J.
name: Bichler, Max
name: Abstreiter, Gerhard
name: Wegscheider, Werner
Publisher: name: Universität Regensburg
Year: 2003
Subjects: subject: gallium arsenide, aluminium compounds, III-V semiconductors, semiconductor quantum dots, atomic force microscopy, electron beam lithography, nanolithography, anodisation
subject: 530 Physik
subject: 81.16.Nd; 81.16.Ta; 81.07.Ta; 81.05.Ea; 68.47.Fg; 68.65.Hb; 85.40.Hp; 81.65.Mq

description: We have combined direct nanofabrication by local anodic oxidation with conventional electron-beam lithography to produce a parallel double quantum dot based on a GaAs/AlGaAs heterostructure. The combination of both nanolithography methods allows fabrication of robust in-plane gates and Cr/Au top-gate electrodes on the same device for optimal controllability. This is illustrated by the tunability of the interdot coupling in our device. We describe our fabrication and alignment scheme in detail and demonstrate the tunability in low-temperature transport measurements.
Midinfrared intraband electroluminescence from AlInAs quantum dots
Creators: name: Ulbrich, N.
name: Bauer, J.
name: Scarpa, G.
name: Boy, R.
name: Schuh, Dieter
name: Abstreiter, Gerhard
name: Schmult, Stefan
name: Wegscheider, Werner
Publisher: name: Universität Regensburg
Year: 2003
Subjects: subject: aluminium compounds, semiconductor quantum dots, electroluminescence, indium compounds, III-V semiconductors, Stark effect, spectral line broadening, population inversion, quantum dot lasers, quantum cascade lasers
subject: 530 Physik
subject: 78.67.Hc; 78.60.Fi; 42.55.Px; 78.20.Jq; 73.21.La

description: Midinfrared electroluminescence from a cascade of coupled AlInAs quantum dots and GaAs quantum wells at low temperature (80 K) is demonstrated. At low injection currents, the spectra show a clear peak at 158 meV with a luminescence width of 15 meV which is associated with transitions from the s shells of a resonant subensemble of quantum dots. A Stark shift to 143 meV and spectral broadening is observed at higher injection currents which is associated with luminescence from the inhomogeneously broadened quantum-dot ensemble. The reported design is a possible solution to obtain population inversion in unipolar quantum-dot-cascade structures.
title: Vaccine opposition in the information age: a study on online activism and DIY citizenship
Creators: name: Uberti, Francesca
Publisher: name: London School of Economics and Political Science (LSE)
Year: 2022

description: Despite the growing prevalence of insufficient sleep among individuals, we still know little about the labour market returns to sleep. To address this gap, we utilize longitudinal data from Germany and leverage exogenous fluctuations in sleep duration caused by variations in time and local sunset times. Our findings reveal that a one-hour increase in weekly sleep is associated with a 1.6 percentage point rise in employment and a 3.4% increase in weekly earnings. The majority of this earnings effect stems from improvements in productivity, while the number of working hours decreases with longer sleep duration. We also identify a key mechanism driving these effects: the enhanced mental well-being experienced by individuals who sleep longer hours. Vaccination critics have been at the forefront of much recent media commentary, and ever more so after the spread of COVID-19 and the implementation of vaccination programmes to tackle the pandemic. However, vaccination critics had attracted the attention of academics, media commentators and public health institutions in the years preceding the pandemic. My research relies upon data collected pre-pandemic, focusing specifically on online activism targeting routine childhood vaccinations. While seeking to understand internet-mediated vaccine-critical activism, this thesis addresses the following research questions: how do online vaccine critics construct knowledge that feeds into vaccination controversies? What kind of values underlie vaccine critics’ policy demands, and how are these demands advocated for? How do critics understand and represent their collective identities? Finally, and most importantly for my study, how do online vaccine critics engage with their surrounding legal landscapes? Drawing upon an analysis of qualitative data from more than 700 posts linked to six vaccine-critical blogs, collected during nine months of fieldwork informed by an internet-ethnographic approach, I suggest that online vaccine-critical activism needs to be understood as a complex phenomenon embedded in its socio-legal context. While vaccine critics are often depicted as an anti-establishment force, I contend that their relationship with the law in particular is more complex than that. Rather than merely ‘resisting’ the law, vaccine-critical activists mobilise and co-opt different legal discourses and concepts in intricate and sometimes surprising ways. Vaccine-critical activism is an historically persistent phenomenon which if misunderstood risks further alienating current activists and potentially aggravating the issue of vaccine hesitancy. Investigating vaccine critics’ online practices and learning more about their shared worldviews is therefore important (and has become even more so in the light of the SARS-CoV-2 pandemic) in order to frame effective public health communications about vaccine safety.
Finite wavevector scattering on the v=2/3 huge longitudinal resistance
Creators: name: Kraus, Stefan
name: Lok, J. G. S.
name: Dietsche, W.
name: Klitzing, Klaus von
name: Wegscheider, Werner
name: Bichler, Max
Publisher: name: Universität Regensburg
Year: 2002
Subjects: subject: AlGaAs; Fractional quantum Hall effect; Drag; Nuclear spin
subject: 530 Physik
subject: 72.80.Ey; 73.20.Dx; 73.40.Hm

description: We observe the huge longitudinal resistance (HLR) anomaly at filling factor Image in a separately contacted, 15 nm wide double quantum well structure. With drag measurements we probe the interlayer momentum transfer with one of the wells in the HLR state and observe a dependence of the drag on the filling factor ν in the drag layer. The interlayer momentum transfer peaks at Image and Image and is small for other filling factors.
Gelatin clay hybrid nanocomposites for tissue engineering applications
Creators: name: Hossain, Mohammad Towsif
Publisher: name: University of British Columbia
Year: 2018

description: Recent trends promote the replacement of synthetic polymer based hydrogel composites with different bio-polymer based composite due to superior biocompatibility and biodegradability. Again, some tissue engineering applications e.g. osteogenic diseases, stiff bio-polymer composite is required. Although, bone has splendid ability to heal itself after injury, there is still a space left to accelerate the healing process for non-union injuries. To address this problem, a novel gelatin based bio-nanocomposite material had been developed using ceramic particles found in clay minerals. Three different types of materials such as micro bentonite, nanosilica, and nanobentonite have been used in various concentration with gelatin hydrogel to increase its toughness. Micro bentonite did not interact with hydrogel chain whereas it was proved to be cell viable. Subsequently, nanosilica did increase the compressibility of the polymer but it was not compatible with the cells. Afterwards, nanobentonite was introduced. Nanobentonite is a smectite shaped ultra-thin nanomaterial. The nanobentonite was crosslinked with the gelatin hydrogel covalently to produce tunable physical and mechanical properties. Small amount of covalently bonded nanocomposite increased the elastic modulus of the gel by 6 folds and tensile stress by 10 folds. The nanoparticles also enhanced the pore size of the hydrogels which promoted the exchange of biomolecules in the matrices. The nanocomposite also amplified the cell adhesion, proliferation, and growth of NIH 3T3 fibroblast cells compared with the pristine gelatin hydrogel. Overall, the results of the nanocomposite showed promising improvement in terms of stiffness, porosity, cell viability which play vital role in the treatment of non-union bone defects.
Vertical field effect transistors realized by cleaved-edge overgrowth
Creators: name: Ertl, F.
name: Asperger, T.
name: Deutschmann, R. A.
name: Wegscheider, Werner
name: Bichler, Max
name: Böhm, G.
name: Abstreiter, Gerhard
Publisher: name: Universität Regensburg
Year: 2002
Subjects: subject: Cleaved-edge overgrowth; Vertical transistor; DC transport
subject: 530 Physik
subject: 81.16.−c; 85.35.−p; 73.63.−b

description: We present a brief survey of vertical transistor devices fabricated by the cleaved-edge overgrowth technique. Different device types are realized using different transistor substrates grown by molecular beam epitaxy. These substrates mainly vary in the layer sequence and thickness between the source/drain contacts. Common to all designs is the vertical gate structure overgrown on a cleavage plane of the substrates. By biasing the gate a two-dimensional electron system of tunable density is induced between source/drain. We study the DC transport properties of long channel (source–drain distance not, vert, similar1 μm) as well as short-channel (source–drain distance not, vert, similar50 nm) devices. Also the choice of the source/drain isolation (a superlattice or a p+-δ-doping or a heterobarrier) affects the characteristic device behavior.
Voltage-switchable Bragg reflector for planar optical waveguides
Creators: name: Frank, W. R.
name: Govorov, A. O.
name: Wegscheider, Werner
name: Karrai, K.
name: Kotthaus, J. P.
Publisher: name: Universität Regensburg
Year: 2002
Subjects: subject: Electro-optic devices; Bragg reflector; Optical waveguides
subject: 530 Physik
subject: 95 42.79.Fm; 85.60.Me

description: We present an experimental realization of a voltage-switchable in-plane Bragg reflector for planar waveguides. The device is based on the quantum confined Stark effect induced by an interdigitated gate in a multi-quantum well that is located in the core of the planar waveguide. Aspects of the sample preparation and room-temperature measurements are discussed.
The role of mitochondrial uncoupling in temperature responses in Atlantic killifish, Fundulus heteroclitus
Creators: name: Bryant, Heather Jean
Publisher: name: University of British Columbia
Year: 2018

description: Environmental temperature can greatly impact the functioning of ectothermic organisms through effects on mitochondria, which are crucial to aerobic metabolism. Changes in temperature have the potential to influence mitochondrial ATP production and production of reactive oxygen species (ROS), both of which are influenced by the activity of the mitochondrial electron transport system, which generates the proton gradient necessary for mitochondrial ATP production. Thus, I hypothesized that ectothermic organisms have a mechanism for modulating the proton gradient in the face of changes in environmental temperature to maintain ATP production, and that this mechanism may act through uncoupling proteins (UCPs) which can cause a decrease in the proton gradient independent of the production of ATP. Here, I investigate changes in UCPs and mitochondrial function following thermal acclimation in two populations of the eurythermal Atlantic killifish, Fundulus heteroclitus. I show that UCP mRNA expression is tissue-specific, changes with thermal acclimation, and differs between two populations of killifish. However, these changes vary depending on the isoform, tissue, and population (Chapter 2). I also demonstrate that changes in UCP function are not necessarily consistent with changes in mRNA expression in isolated liver and brain mitochondria, but that UCP function may differ in liver between the two populations (Chapter 3). Cold-acclimated northern killifish increase liver mitochondrial capacity and coupling as indicated by increases in state III, respiratory control and ADP/O ratios (Chapter 3). Interestingly, I also observed increases in proton conductance in isolated liver mitochondria from cold-acclimated northern killifish as indicated by increased O₂ consumption rate at a common membrane potential (Chapter 3). Mitochondrial properties in southern killifish did not differ with thermal acclimation. Taken together, my data suggest that UCPs may play a role in thermal acclimation, although there is not a clear connection between UCP mRNA expression and function. Furthermore, my data indicate that northern killifish may have a greater capacity to respond to low temperature acclimation than southern killifish, suggesting a potential role for adaptive variation in mitochondrial responses to temperature.
Marvellous things in marvellous rings: energy spectrum, spins and persistent currents
Creators: name: Ihn, Thomas
name: Fuhrer, A.
name: Heinzel, Thomas
name: Ensslin, Klaus
name: Wegscheider, Werner
name: Bichler, Max
Publisher: name: Universität Regensburg
Year: 2003
Subjects: subject: Quantum dots; Coulomb-blockade; Aharonov–Bohm effect; Persistent currents; Spin-pairing
subject: 530 Physik
subject: 73.23.Hk; 73.21.La; 73.23.Ra; 73.63.Kv

description: Magnetotransport experiments on a semiconductor quantum ring in the Coulomb blockade regime are described. The measurements allow to extract the discrete energy levels of a realistic ring, which are found to agree well with theoretical expectations. The interaction effects important for our ring structure are analysed in detail. The experimentally observed charging energy can be quantitatively understood within the Hartree approximation including a strong screening contribution due to the top gate. The strong screening effect is the reason for the frequent occurrence of spin-pairs in the addition spectra. The relation of the observed addition spectra to persistent currents is established and the magnitude of the current is extracted from experimental data.