cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Methodical instructions for laboratory works on the discipline "Electric machines" for foreign students of the academic and scientific institute of power engineering, electronics and electrical engineering
Creators: name: Shevchenko Valentina, V.
name: Duniev, O.O.
name: Shilkova, L.V.
name: Lazareva O.Ya.
Publisher: name: Zenodo
Year: 2019
Subjects: електричні машини
методичні вказівки
лабораторні роботи
electric machines
methodical instructions
laboratory works

description: In English: [Methodical instructions for laboratory works on the discipline “Electric machines” for foreign students of the academic and scientific institute of power engineering, electronics and electrical engineering / compilers: Shevchenko V.V., Duniev O.O., Shilkova L.V., Lazareva O.Ya.; edited by prof. Milykh V.I. - Ukraine, Kharkiv: NTU "KhPI", 2019. - 40 p. https://doi.org/10.5281/zenodo.3252698]

The edition is dedicated to expand the theoretical knowledge of foreign students on the "Electrical machines" discipline. The objects of study are transformers and electric machines, which are the basis of electric power in various industries. The subject of this course is electric machines, which are used in practice to convert one form of energy into another: mechanical to electrical (generators), electrical to mechanical (electric motors), power transformers, which convert the AC parameters, current and voltage.

Keywords: electric machines, methodical instructions, laboratory works.

Repository of NTU "KhPI" - open pdf.

Українською: [Методичні вказівки до лабораторних робіт по дисципліні "Електричні машини" для іноземних студентів Навчально-наукового інституту енергетики, електроніки та електромеханіки (англ.) / Укладачі Шевченко В.В., Дунєв О.О., Шилкова Л.В., Лазарєва О.Я.; під редакцією проф. Мілих В.І. - Україна, Харків: НТУ "ХПІ", 2019. – 40 с. https://doi.org/10.5281/zenodo.3252698]

Видання присвячено розширенню теоретичних знань iноземних студентів з дисципліни "Електричні машини". Об'єктами дослідження є трансформатори та електричні машини, які є основою електроенергетики в різних галузях промисловості. Предметом даного курсу є електричні машини, які використовуються на практиці для перетворення однієї форми енергії в іншу: механічної в електричну (генератори), електричної в механічну (електродвигуни), а також силові трансформатори, які перетворюють параметри приладів змінного струму (струм та напругу).

Ключові слова: електричні машини, методичні вказівки, лабораторні роботи.
STUDIES ON STATUS OF OPEN WELLS IN KOLHAPUR CITY.pdf
Creators: name: Patil, Yojana
name: P.D. Raut
Publisher: name: figshare
Year: 2021
Subjects: subject: 49999 Earth Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 50206 Environmental Monitoring
subject: Environmental Science
subject: 90508 Water Quality Engineering
subject: FOS: Civil engineering
subject: 60204 Freshwater Ecology
subject: FOS: Biological sciences
subject: 90509 Water Resources Engineering

description: The drinking water crisis in Indian citieshas reached explosive proportion. These watersources are rapidly vanishing or deteriorating dueto different urban activities. Therefore, for years,urban dwellers have been silently suffering anintermittent supply of poor quality water. The bestand mostly neglected water resources in the citiesare wells. These wells play significant role ingroundwater chemistry of that region. Ignoranceand different construction activities in cities canadversely affect the natural environment,including the quality and behaviour of valuablegroundwater resources like wells.Approximately more than 200 wells werepresent in Kolhapur city in the past, but now mostof them are destroyed or not in good condition.Increase in population, urbanization andindustrialization has created unhygienic conditionsenhancing the problem of these water resources.The present study deals with present condition ofopen wells in the Kolhapur city. Thirty five wellswere identified from Kolhapur city. The study it isrevealed that these water resources are rapidlyvanishing from cities under the name ofdevelopment and ignorance. There is need to cleanand secure these wells for present and future touse it as an alternative source of water.
Optimum Installation Condition of PV Array from the View Point of Generation Performance at Syowa Base in Antarctica
Creators: name: Nishikawa, S.
name: Takano, T.
name: Ishizawa, K.
Publisher: name: WIP
Year: 2012
Subjects: PV Systems
Off-grid Applications

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 4260-4263
description: Though commercial 55kW PV system has been already operated at Syowa Base in Antarctica, a lot of PV
modules were damaged. Moreover, climate such as irradiance, temperature in Antarctica is quite different from other
most area on the earth. And the profile of electrical load of Syowa Base is very stable compared to that of general
electrical system. So, we started field test at Syowa Base to clear the optimum installation condition from the points of
generation performance and reliability. In December, daily irradiation on PV module of about half a month is more than 9
kWh/ , average module temperature is about 15  and maximum temperature is 40  at the most. So, average module
efficiency is higher than that of Standard Test Condition by some 5 %. Since the sun does not set in summer at Antarctica,
PV array facing to plural azimuths can generate more than that of normal PV array. Duration of high irradiance more than
0.7 kW/ of which PV modules face three azimuths becomes almost twice of that of which PV modules face to only
north.
Methodical instructions for laboratory works on the discipline "Electric machines" for foreign students of the academic and scientific institute of power engineering, electronics and electrical engineering
Creators: name: Shevchenko Valentina, V.
name: Duniev, O.O.
name: Shilkova, L.V.
name: Lazareva O.Ya.
Publisher: name: Zenodo
Year: 2019
Subjects: електричні машини
методичні вказівки
лабораторні роботи
electric machines
methodical instructions
laboratory works

description: In English: [Methodical instructions for laboratory works on the discipline “Electric machines” for foreign students of the academic and scientific institute of power engineering, electronics and electrical engineering / compilers: Shevchenko V.V., Duniev O.O., Shilkova L.V., Lazareva O.Ya.; edited by prof. Milykh V.I. - Ukraine, Kharkiv: NTU "KhPI", "Stylish typography", 2019. - 40 p. https://doi.org/10.5281/zenodo.3252698]

Українською: [Методичні вказівки до лабораторних робіт по дисципліні "Електричні машини" для іноземних студентів Навчально-наукового інституту енергетики, електроніки та електромеханіки (англ.) / Укладачі Шевченко В.В., Дунєв О.О., Шилкова Л.В., Лазарєва О.Я.; під редакцією проф. Мілих В.І. - Україна, Харків: НТУ "ХПІ", "Стильна типографія", 2019. – 40 с. https://doi.org/10.5281/zenodo.3252698]
Qualification and Certification of Installers in Italy
Creators: name: Moreno, A.
name: Castello, S.
name: Pistochini, P.
name: Bonfiglio, L.
Publisher: name: WIP
Year: 2012
Subjects: PV - a Major Electricity Source
PV Globalisation, Policies and Administrative Barriers

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 4731-4737
description: The last two years have been characterized by impressive growth of installation. At present,
according to GSE, the total power installed and operating amount to about 13 GW. Estimated PV-related labour
places added to induced jobs amounted to 50.000 units. Only by paying serious attention to quality of training,
the skills of the employers in the photovoltaic industry can raise, the companies will be able to improve the
quality of professional services and meet the need of further professionalization of the staff.
Since 2011 the Italian certification and qualification system has been regulated by Legislative Decree 28/2011
implementing the RES Directive 2009/28/EC. In order to be qualified as professionals, the installers of PV
systems need to attend to training programs in compliance with the criteria foreseen in Annex IV.
According to the 28/2011 Decree, the Italian certification learning programs will be managed by regional
administrations, supported by ENEA - the Italian National Agency for New Technologies, Energy and
Sustainable Economic Development- ensuring the homogeneous patterns and high quality content.
ENEA, thanks to its experience in training and for its qualified participation in working groups and in several
European projects on renewable energy, has been developing a qualification scheme for RES installers of RES,
including PV installers since 2007.
Mesos, which is ENEA’s spin off and skilled training provider, has already experienced the ENEA model,
providing successfully accredited courses for the qualification of PV installers. By passing final examination, the
"certified installers" will be inserted in a national register by ENEA.
The ENEA model is a voluntary certification scheme much appreciated by end-users and training providers.
Should the regional certification systems have accepted it, a unique certification scheme at national level would
be created and single regional certification system avoided. The paper will show in details how ENEA is planning
to fulfill with requirements foreseen on art. 15 of the Italian Leg. Decree 28/2011 by the end of December 2012.
Approaching meV level for transition energies in the radium monofluoride molecule RaF and radium cation Ra$^+$ by including quantum-electrodynamics effects
Creators: name: Skripnikov, Leonid V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Highly accurate theoretical predictions of transition energies in the radium monofluoride molecule, $^{226}$RaF and radium cation, $^{226}$Ra$^+$, are reported. The considered transition $X~^2Σ_{1/2} \to A~^2Π_{1/2}$ in RaF is one of the main features of this molecule and can be used to laser cool RaF for subsequent measurement of the electron electric dipole moment. For molecular and atomic predictions we go beyond the Dirac-Coulomb Hamiltonian and treat high-order electron correlation effects within the coupled cluster theory with the inclusion of quadruple and ever higher amplitudes. Effects of quantum electrodynamics (QED) are included non-perturbatively using the model QED operator that is implemented now for molecules. It is shown that the inclusion of QED effects in molecular and atomic calculations is a key ingredient in resolving the discrepancy between the theoretical values obtained within the Dirac-Coulomb-Breit Hamiltonian and the experiment. The remaining deviation from the experimental values is within a few meV. This is more than an order of magnitude better than the "chemical accuracy", 1 kcal/mol=43 meV, that is usually considered as a guiding thread in theoretical molecular physics.
RE J1034+396: The origin of the soft X-ray excess and QPO
Creators: name: Middleton, Matthew
name: Done, Chris
name: Ward, Martin
name: Gierlinski, Marek
name: Schurch, Nick
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The X-ray quasi-periodic oscillation (QPO) seen in RE J1034+396 is so far unique amongst AGN. Here we look at the another unique feature of RE J1034+396, namely its huge soft X-ray excess, to see if this is related in any way to the detection of the QPO. We show that all potential models considered for the soft energy excess can fit the 0.3-10 keV X-ray spectrum, but that the energy dependence of the rapid variability (which is dominated by the QPO) strongly supports a spectral decomposition where the soft excess is from low temperature Comptonization of the disc emission and remains mostly constant, while the rapid variability is produced by the power law tail changing in normalization. The presence of the QPO in the tail rather than in the disc is a common feature in black hole binaries, but low temperature Comptonization of the disc spectrum is not generally seen in these systems. The main exception to this is GRS 1915+105, the only black hole binary which routinely shows super-Eddington luminosities. We speculate that super-Eddington accretion rates lead to a change in disc structure, and that this also triggers the X-ray QPO.
description: Submitted to MNRAS
SBIR: An Effective Governmental Instrument to Generate Innovation in the Dutch BIPV-Field
Creators: name: Van Heemstra, W.
Publisher: name: WIP
Year: 2012
Subjects: PV - a Major Electricity Source
PV Globalisation, Policies and Administrative Barriers

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 4742-4744
description: This paper will provide an insight in the functioning of the SBIR-instrument and its advantages for in particular small business contributions for the integration of PV-techniques in the build environment.
Methodical instructions for laboratory works on the discipline "Electric machines" for foreign students of the academic and scientific institute of power engineering, electronics and electrical engineering
Creators: name: Shevchenko Valentina, V.
name: Duniev, O.O.
name: Shilkova, L.V.
name: Lazareva O.Ya.
Publisher: name: Zenodo
Year: 2019
Subjects: електричні машини
методичні вказівки
лабораторні роботи
electric machines
methodical instructions
laboratory works

description: In English: [Methodical instructions for laboratory works on the discipline “Electric machines” for foreign students of the academic and scientific institute of power engineering, electronics and electrical engineering / compilers: Shevchenko V.V., Duniev O.O., Shilkova L.V., Lazareva O.Ya.; edited by prof. Milykh V.I. - Ukraine, Kharkiv: NTU "KhPI", 2019. - 40 p. https://doi.org/10.5281/zenodo.3252698]

The edition is dedicated to expand the theoretical knowledge of foreign students on the "Electrical machines" discipline. The objects of study are transformers and electric machines, which are the basis of electric power in various industries. The subject of this course is electric machines, which are used in practice to convert one form of energy into another: mechanical to electrical (generators), electrical to mechanical (electric motors), power transformers, which convert the AC parameters, current and voltage.

Keywords: electric machines, methodical instructions, laboratory works.

Українською: [Методичні вказівки до лабораторних робіт по дисципліні "Електричні машини" для іноземних студентів Навчально-наукового інституту енергетики, електроніки та електромеханіки (англ.) / Укладачі Шевченко В.В., Дунєв О.О., Шилкова Л.В., Лазарєва О.Я.; під редакцією проф. Мілих В.І. - Україна, Харків: НТУ "ХПІ", 2019. – 40 с. https://doi.org/10.5281/zenodo.3252698]

Видання присвячено розширенню теоретичних знань iноземних студентів з дисципліни "Електричні машини". Об'єктами дослідження є трансформатори та електричні машини, які є основою електроенергетики в різних галузях промисловості. Предметом даного курсу є електричні машини, які використовуються на практиці для перетворення однієї форми енергії в іншу: механічної в електричну (генератори), електричної в механічну (електродвигуни), а також силові трансформатори, які перетворюють параметри приладів змінного струму (струм та напругу).

Ключові слова: електричні машини, методичні вказівки, лабораторні роботи.
A Lower Bound for the Sample Complexity of Inverse Reinforcement Learning
Creators: name: Komanduru, Abi
name: Honorio, Jean
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Inverse reinforcement learning (IRL) is the task of finding a reward function that generates a desired optimal policy for a given Markov Decision Process (MDP). This paper develops an information-theoretic lower bound for the sample complexity of the finite state, finite action IRL problem. A geometric construction of $β$-strict separable IRL problems using spherical codes is considered. Properties of the ensemble size as well as the Kullback-Leibler divergence between the generated trajectories are derived. The resulting ensemble is then used along with Fano's inequality to derive a sample complexity lower bound of $O(n \log n)$, where $n$ is the number of states in the MDP.
Avoided level crossings in quasi-exact approach
Creators: name: Znojil, Miloslav
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The existence of quantum tunneling opens the possibility of a sudden spatial relocalization of a system after a minor modification of its parameters. Such a quantum analogue of the Thom's classical catastrophe would manifest itself, experimentally, via a reordering of the maxima of the probability density paralleled by avoided crossings of the energy levels. Any model (described, say, by an analytic potential with several pronounced minima) is difficult to describe near such an instability because the phenomenon is oversensitive to perturbations. A systematic exact (or, better, quasi-exact) construction of the relocalization instants is proposed here. Its application is considered in the one-dimensional critical-instant setup. The approach is shown to yield the mutually consistent non-polynomial analytic potentials together with the related non-numerical multi-Gaussian-shaped wave functions.
description: 22 pp., 5 figures
When Did It Happen? Duration-informed Temporal Localization of Narrated Actions in Vlogs
Creators: name: Ignat, Oana
name: Castro, Santiago
name: Zhou, Yuhang
name: Bao, Jiajun
name: Shan, Dandan
name: Mihalcea, Rada
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: We consider the task of temporal human action localization in lifestyle vlogs. We introduce a novel dataset consisting of manual annotations of temporal localization for 13,000 narrated actions in 1,200 video clips. We present an extensive analysis of this data, which allows us to better understand how the language and visual modalities interact throughout the videos. We propose a simple yet effective method to localize the narrated actions based on their expected duration. Through several experiments and analyses, we show that our method brings complementary information with respect to previous methods, and leads to improvements over previous work for the task of temporal action localization.
description: arXiv admin note: text overlap with arXiv:1906.04236
Pictorialism in the fictional miniatures of Albert Paris Gütersloh
Creators: name: Laue, Ingrid Elizabeth
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of this study has been to investigate and analyze the "fictional miniatures," i.e., the short prose works, of Albert Paris Gütersloh. The assumption was that a marked interrelationship exists between these and Gütersloh's painted miniatures. Given the fact that Gütersloh was both writer and painter, and since many of the questions which logically arise out of this duality either have not been addressed at all in the scholarly literature on Gütersloh, or dealt with only superficially, it was felt that the approach used in the present study had to focus, to some extent, on the artist's dual talent. The study attempts to illustrate Gütersloh's artistic nature in conjunction with an investigation of one area of artistic expression, namely the short fictional works. The method was one of proceeding from the general to the particular, i.e., by first examining the complex phenomenon of the "painting writer," or "writing painter," as well as the widely discussed notion of "reciprocal illumination" of the arts. This, together with the detailed analysis of scholarly works on Gütersloh as well as his own theoretical writings on art was seen as part of the necessary "anatomy" of the study. Although the narrational quality of the painted miniatures has been alluded to by several other critics, the inherent similarity between Gütersloh's painted and "literary miniatures" (i.e., his short prose works) is being analyzed for the first time in this study. It aims at proving the claim that the former's overriding characteristic is their distinctly narrational quality. As such the paintings are permeated with a writer's imagination, a feature which makes their narrative component as important as the pictorial. Each of these small-scale paintings depicts some crucial point in a "story," thereby forcing the viewer to imagine a "before" as well as an "after" of each specific scene — in other words, to see these paintings in epic terms. By isolating such elements as delineation, framing, staging, setting, and colour (both descriptive and metaphorical) among others, it could be shown that the fictional miniatures give evidence of Gütersloh's persistent inclination to think, and write, in "pictures," hence to work from a largely pictorial conception: the story-line frequently is developed as a series of static "pictures" which are given as much compositional weight as the chronologically progressing plot. It could also be demonstrated that the general phenomenon of Fantastic Realism is a pronounced feature not only of the painted but also of the literary miniatures. The conclusion the study reaches is that Gütersloh's artistic expression, whether as writer or painter, is of a much more unified nature than has previously been argued; that both forms of artistic expression are of a complementary nature, and that this phenomenon is exemplified most succinctly in his fictional miniatures.
Termination of Multipartite Graph Series Arising from Complex Network Modelling
Creators: name: Latapy, Matthieu
name: Phan, Thi Ha Duong
name: Crespelle, Christophe
name: Nguyen, Thanh Qui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Data Structures and Algorithms (cs.DS)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: An intense activity is nowadays devoted to the definition of models capturing the properties of complex networks. Among the most promising approaches, it has been proposed to model these graphs via their clique incidence bipartite graphs. However, this approach has, until now, severe limitations resulting from its incapacity to reproduce a key property of this object: the overlapping nature of cliques in complex networks. In order to get rid of these limitations we propose to encode the structure of clique overlaps in a network thanks to a process consisting in iteratively factorising the maximal bicliques between the upper level and the other levels of a multipartite graph. We show that the most natural definition of this factorising process leads to infinite series for some instances. Our main result is to design a restriction of this process that terminates for any arbitrary graph. Moreover, we show that the resulting multipartite graph has remarkable combinatorial properties and is closely related to another fundamental combinatorial object. Finally, we show that, in practice, this multipartite graph is computationally tractable and has a size that makes it suitable for complex network modelling.
description: Published in LNCS, proceedings of the 4th International Conference on Combinatorial Optimization and Applications (COCOA), 2010
Directed transport in a spatially periodic potential under periodic non-biased forcing
Creators: name: Leoncini, Xavier
name: Neishtadt, Anatoly
name: Vasiliev, Alexei
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Transport of a particle in a spatially periodic harmonic potential under the influence of a slowly time-dependent unbiased periodic external force is studied. The equations of motion are the same as in the problem of a slowly forced nonlinear pendulum. Using methods of the adiabatic perturbation theory we show that for a periodic external force of general kind the system demonstrates directed (ratchet) transport in the chaotic domain on very long time intervals and obtain a formula for the average velocity of this transport. Two cases are studied: the case of the external force of small amplitude, and the case of the external force with amplitude of order one. The obtained formulas can also be used in case of a non-harmonic periodic potential.
Tilt-angle landscapes and temperature dependence of the conductance in biphenyl-dithiol single-molecule junctions
Creators: name: Pauly, F.
name: Viljas, J. K.
name: Cuevas, J. C.
name: Schön, Gerd
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using a density-functional-based transport method we study the conduction properties of several biphenyl-derived dithiol (BPDDT) molecules wired to gold electrodes. The BPDDT molecules differ in their side groups, which control the degree of conjugation of the pi-electron system. We have analyzed the dependence of the low-bias zero-temperature conductance on the tilt angle phi between the two phenyl ring units, and find that it follows closely a cos^2(phi) law, as expected from an effective pi-orbital coupling model. We show that the tilting of the phenyl rings results in a decrease of the zero-temperature conductance by roughly two orders of magnitude, when going from a planar conformation to a configuration in which the rings are perpendicular. In addition we demonstrate that the side groups, apart from determining phi, have no influence on the conductance. All this is in agreement with the recent experiment by Venkataraman et al. [Nature 442, 904 (2006)]. Finally, we study the temperature dependence of both the conductance and its fluctuations and find qualitative differences between the examined molecules. In this analysis we consider two contributions to the temperature behavior, one coming from the Fermi functions and the other one from a thermal average over different contact configurations. We illustrate that the fluctuations of the conductance due to temperature-induced changes in the geometric structure of the molecule can be reduced by an appropriate design.
description: 9 pages, 6 figures; submitted to Phys. Rev. B
The Influence of Sodium on CIGSe Solar Cell Breakdown Characteristics
Creators: name: Puttnins, S.
name: Purfürst, M.
name: Hartung, M.
name: Lee, H.-K.
name: Daume, F.
name: Hartmann, L.
name: Rahm, A.
name: Braun, A.
name: Grundmann, M.
Publisher: name: WIP
Year: 2012
Subjects: Thin Film Solar Cells
CdTe, CIS and Related Ternary and Quaternary Thin Film Solar Cells

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 2219-2221
description: The breakdown characteristics of flexible Cu(In,Ga)Se2 solar cells were analyzed with respect to the
influence of sodium. Higher sodium contents lead to lower breakdown voltages, which were deduced from reverse
bias JV-measurements. For a locally resolved analysis of this effect, voltage dependent dark lock-in thermography
images were recorded. It can be shown that enhanced sodium concentration does not increase the number of local
shunts but their voltage dependence.
Toward Semi-Automatic Misconception Discovery Using Code Embeddings
Creators: name: Shi, Yang
name: Shah, Krupal
name: Wang, Wengran
name: Marwan, Samiha
name: Penmetsa, Poorvaja
name: Price, Thomas W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Computers and Society (cs.CY)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences
subject: I.2.1; K.3.1; K.3.2

description: Understanding students' misconceptions is important for effective teaching and assessment. However, discovering such misconceptions manually can be time-consuming and laborious. Automated misconception discovery can address these challenges by highlighting patterns in student data, which domain experts can then inspect to identify misconceptions. In this work, we present a novel method for the semi-automated discovery of problem-specific misconceptions from students' program code in computing courses, using a state-of-the-art code classification model. We trained the model on a block-based programming dataset and used the learned embedding to cluster incorrect student submissions. We found these clusters correspond to specific misconceptions about the problem and would not have been easily discovered with existing approaches. We also discuss potential applications of our approach and how these misconceptions inform domain-specific insights into students' learning processes.
description: 7 pages, 3 figures, Accepted in LAK'21
A Comparative Analysis of PV Module Efficiency from Five Different Cell-Technology Arrays: Experimental Results within the CALENER Project
Creators: name: Alonso-García, M.C.
name: Silva, J.P.
name: Pérez, L.
name: Chenlo, F.
name: Débora, P.J.
name: Maderuelo, E.
name: Mejuto, E.
name: Angulo, M.
name: Martín, J.
name: Salas, V.
Publisher: name: WIP
Year: 2012
Subjects: Components for PV Systems
PV Modules

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 3275-3279
description: This work presents the comparative results of the first year of operation of five PV arrays installed in
Madrid. Conventional a-Si, CIS, CdTe, back contact and p-Si modules have been used in one kW arrays with the
objective of evaluating its performance from the beginning of operation and analyzing their differences. Array
maximum power point (mpp) is achieved by using high quality mpp tracking inverters. Results of first year suggest
some very slight degradation losses in CdTe arrays, medium losses in CIS and the biggest degradation values in
conventional a-Si PV modules when compared to p-Si. The effect of using different irradiance sensors is also shown.
Current without bias and diode effect in shuttling transport of nanoshafts
Creators: name: Morawetz, K.
name: Gemming, S.
name: Luschtinetz, R.
name: Eng, L. M.
name: Seifert, G.
name: Kenfack, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A row of parallely ordered and coupled molecular nanoshafts is shown to develop a shuttling transport of charges at finite temperature. The appearance of a cu rrent without applying an external bias voltage is reported as well as a natura l diode effect allowing unidirectional charge transport along one field directi on while blocking the opposite direction. The zero-bias voltage current appears above a threshold of initial thermal and/or dislocation energy.
Impact of High Light Transmission EVA-Based Encapsulant on the Performance of PV Modules
Creators: name: Schmid, C.
name: Chapon, J.
name: Kinsey, G.
name: Bokria, J.
name: Woods, J.
Publisher: name: WIP
Year: 2012
Subjects: Components for PV Systems
PV Modules

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 3494-3498
description: In order to reduce the cost per watt, solar cell manufacturers have developed various methods to increase the efficiency
of solar cells. Recently, a number of solar cell manufacturers have introduced products with improved internal quantum efficiency at
short wavelengths (< 400 nm). Ethylene vinyl acetate (EVA) copolymer, typically, has an UV wavelength cutoff at 360 nm. Conventional
EVA therefore substantially eliminates the potential gains in power resulting from the better blue response at the cell level.
This work examines the impact of a newly developed EVA-based high light transmission (HLT) encapsulant on module performance.
Newly developed EVA-based HLT film was compared against commercially available standard EVA film. Test modules
were characterized for electrical performance and durability. Performance measurements were carried out under standard test conditions
at both normal and oblique angles of light incidence; characterization was repeated after damp heat testing. Testing revealed a
1% gain in module power output for cells encapsulated with the EVA HLT encapsulant compared to standard EVA.
Pseudo-conservative dynamics of coupled polariton condensates
Creators: name: Chestnov, I.
name: Rubo, Y. G.
name: Nalitov, A.
name: Kavokin, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Open-dissipative systems obeying parity-time ($\mathcal{PT}$) symmetry are capable of demonstrating oscillatory dynamics akin to the conservative systems. In contrast to limit cycle solutions characteristic of nonlinear systems, the $\mathcal{PT}$-symmetric oscillations form a continuum of non-isolated orbits. However, precise sculpturing of the real potential and the gain-loss spatial profiles required for establishing of the $\mathcal{PT}$-symmetry is practically challenging. The optical devices, such as lasers, exhibit relaxation dynamics and do not operate as the $\mathcal{PT}$-symmetric systems. Here we demonstrate how these constraints can be overcome. We predict that a pair of optically trapped polariton condensates (a polariton dimer) can be excited and operated in the oscillating regime typical of the isolated systems. This regime can be realized in the presence of both dissipative and conservative coupling between the condensates and can be maintained at an arbitrary external pump intensity. Every orbit is characterised by a frequency comb appearing in the spectrum of a dimer in the presence of the conservative nonlinearity. Our results pave the way for the creation of the optical computing devices operating under the constant-wave external pumping.
description: 12 pages, 8 figures
PV Self Consumption – Fluctuations of Radiation and Demand
Creators: name: Wille-Haussmann, B.
name: Sabo, A.
name: Link, J.
name: Wittwer, C.
Publisher: name: WIP
Year: 2012
Subjects: Components for PV Systems
Balance of System Components

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 3634-3636
description: The local usage of self generated electricity from PV plants becomes interesting more and more. Due
to reaching grid parity at household level self consumption is quite a popular and economic operation concept that is
considered by planners and operators. With that assumption it becomes important to estimate a realistic share of self
consumption for such a PV-system already in the stadium of planning. To regard fluctuations of demand and
generation the presented approach uses synthetically generated demand profiles with time resolution of 10 s. A
comparison with results based on 15 min values has shown a systematic overestimation. Going to 15 min values leads
to systematic overestimation of about 100 Wh.
On the Termination of Some Biclique Operators on Multipartite Graphs
Creators: name: Crespelle, Christophe
name: Latapy, Matthieu
name: Phan, Thi Ha Duong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Data Structures and Algorithms (cs.DS)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We define a new graph operator, called the weak-factor graph, which comes from the context of complex network modelling. The weak-factor operator is close to the well-known clique-graph operator but it rather operates in terms of bicliques in a multipartite graph. We address the problem of the termination of the series of graphs obtained by iteratively applying the weak-factor operator starting from a given input graph. As for the clique-graph operator, it turns out that some graphs give rise to series that do not terminate. Therefore, we design a slight variation of the weak-factor operator, called clean-factor, and prove that its associated series terminates for all input graphs. In addition, we show that the multipartite graph on which the series terminates has a very nice combinatorial structure: we exhibit a bijection between its vertices and the chains of the inclusion order on the intersections of the maximal cliques of the input graph.
The u-invariant of the function fields of p-adic curves
Creators: name: Parimala, R.
name: Suresh, V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11E04, 11E08, 12G05

description: The u-invariant of a field is the maximum dimension of ansiotropic quadratic forms over the field. It is an open question whether the u-invariant of function fields of p-aidc curves is 8. In this paper, we answer this question in the affirmative for function fields of non-dyadic p-adic curves.
description: 20 pages
Случай двухэтапной хирургической коррекции врожденного ректо-вагинального свища, атрезии ануса и аплазии влагалища
Creators: name: Сергеевич, Шевченко Александр
Publisher: name: Zenodo
Year: 2000
Subjects: пороки развития женских половых органов
хирургическая коррекция пороков развития
ректо-вагинальные свищи
атрезии ануса
аплазии влагалища
гинекология
malformations of female genitals
surgical correction of malformations
recto-vaginal fistula
anus atresia
vaginal aplasia
gynecology

description: На русском: [Шевченко А.С. Случай двухэтапной хирургической коррекции врожденного ректо-вагинального свища, атрезии ануса и аплазии влагалища / Общество акушеров-гинекологов, 17 мая 2000 года // Информационный бюллетень Харьковского медицинского общества, май-июнь 2000 года, 15 с. - Украина, Харьков: ХМО, 2000. - С. 5. https://doi.org/10.5281/zenodo.3252708]

Продемонстрирован видеофильм, авторские права на который принадлежат автору доклада (Шевченко А.С.) и Харьковскому государственному медицинскому университету.

Ключевые слова: пороки развития женских половых органов, хирургическая коррекция пороков развития, ректо-вагинальные свищи, атрезии ануса, аплазии влагалища, гинекология.

In English: [Shevchenko Alexander S. (2000) The case of two-stage surgical correction of congenital rectal-vaginal fistula, anus atresia and vaginal aplasia (rus.) / Сommunity of Obstetricians and Gynecologists, May 17, 2000 // Information Bulletin of Kharkov Medical Сommunity, May-June 2000, p. 5. https://doi.org/10.5281/zenodo.3252708]

A video was shown, the copyright of which belongs to the author of the report (A.Shevchenko) and Kharkiv State Medical University.

Keywords: malformations of female genitals, surgical correction of malformations, recto-vaginal fistula, anus atresia, vaginal aplasia, gynecology.
Analysis of the Effects of Non-Supine Sleeping Positions on the Stress, Strain, Deformation and Intraocular Pressure of the Human Eye
Creators: name: Volpe, Peter
Publisher: name: Digital Repository at the University of Maryland
Year: 2014
Subjects: subject: Aerospace engineering
subject: Biomedical engineering
subject: Deformation
subject: Eye
subject: Intraocular Pressure
subject: Non-Supine
subject: Strain
subject: Stress

description: This thesis presents analytical models, finite element models and experimental data to investigate the response of the human eye to loads that can be experienced when in a non-supine sleeping position. The hypothesis being investigated is that non-supine sleeping positions can lead to stress, strain and deformation of the eye as well as changes in intraocular pressure (IOP) that may exacerbate vision loss in individuals who have glaucoma. To investigate the quasi-static changes in stress and internal pressure, a Fluid-Structure Interaction simulation was performed on an axisymmetrical model of an eye. Common Aerospace Engineering methods for analyzing pressure vessels and hyperelastic structural walls are applied to developing a suitable model. The quasi-static pressure increase was used in an iterative code to analyze changes in IOP over time.
$\sin (ϕ_Λ-ϕ_S)$ azimuthal asymmetry in transversely polarized $Λ$ production in SIDIS within TMD factorization at EIC
Creators: name: Li, Hui
name: Wang, Xiaoyu
name: Lu, Zhun
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the $\sin (ϕ_Λ-ϕ_S)$ single-spin asymmetry in the transversely polarized $Λ$ production in semi-inclusive deeply inelastic scattering process within the framework of the transverse momentum dependent~(TMD) factorization. The asymmetry is contributed by the convolution of the polarizing TMD fragmentation function $D_{1T}^\perp$ of the $Λ$ hyperon and the unpolarized TMD distribution function $f_1$ of the target nucleon. We apply two sets of $D_{1T}^{\perp,Λ^\uparrow/q}$, the spectator diquark model result and available parametrization, to numerically estimate the $\sin (ϕ_Λ-ϕ_S)$ asymmetry at the kinematical region of electron ion collider (EIC). We take into account the TMD evolution effect in order to include the scale dependence of the TMD distribution functions and fragmentation functions. It is found that different sets of $D_{1T}^{\perp,Λ^\uparrow/q}$ lead to different ${\sin (ϕ_Λ-ϕ_S)}$ asymmetry, particularly in sign. Future measurements on the $\sin (ϕ_Λ-ϕ_S)$ asymmetry with high precision at EIC can provide important cross check on the available $Λ$ polarizing fragmentation functions as well as constrain them more stringently.
description: 11 pages, 2 figures. arXiv admin note: text overlap with arXiv:2009.07193
The decline rate of the production cross-section of superheavy nuclei with $Z=114-117$ at high excitation energies
Creators: name: Hong, J.
name: Adamian, G. G.
name: Antonenko, N. V.
name: Jachimowicz, P.
name: Kowal, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The production cross sections of superheavy nuclei with charge numbers $114-117$ are predicted in the $(5-9)n$-evaporation channels of the $^{48}$Ca-induced complete fusion reactions for future experiments. The estimates of synthesis capabilities are based on a uniform and consistent set of input nuclear data provided by the multidimensional macroscopic-microscopic approach. The contributions of various factors to the final production cross section are discussed. As shown, the specific interplay between survival and fusion probabilities unexpectedly leads to a relatively slow decline of the total cross-sections with increasing excitation energy. This effect is supported by a favorable arrangement of fission barriers protecting the compound nucleus against splitting concerning energetic thresholds for the emission of successive neutrons. In particular, the probabilities of the formation of superheavy nuclei in the $5n$-, $6n$-, and in some cases even in $7n$-evaporation channels are still promising. This may offer a new opportunity for the future synthesis of unknown neutron-deficient superheavy isotopes.
Strong electron-phonon coupling in 3D tungsten nitride and coexistence of intrinsic superconductivity and topological nodal line in its 2D limit
Creators: name: Chen, Jianyong
name: Gao, Jiacheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Three-component fermion beyond the conventional Dirac Weyl Majorana classification attracts extensive attentions recently and many efforts have been paid to explore their superconductivity. Based on first-principles calculations, we systematically investigate the electron-phonon coupling (EPC) in the three-component fermion materials WN, WC and TaN. The EPC in pristine and pressured WC and TaN are to small to induce superconductivity. Electron doping can efficiently enhance the EPC strength and the predicted Tcs reach the value of experiments. Upon 0.6 electron/unitcell doping, the EPC strength of TaN is boosted by two orders of magnitude and Tc can even be as high as 27 K, revealing the crucial role of charge doping in the formation of superconductivity observed in WC and TaN. In stark contrast, pristine WN exhibits overwhelmingly strong EPC and can be a good superconductor with a high transition temperature Tc of 31 K. The strong EPC in WN are dictated by a synergistic effect of strong Fermi nesting and large deformation potential. Going down from three-dimension (3D) to three-dimension (2D), WN thin film (i.e. monolayer W3N4) is also an intrinsic superconductor with Tc of 11 K. Most importantly, monolayer W3N4 host Dirac nodal lines protected by mirror symmetry in the absence of spin-orbit coupling (SOC), Including SOC, the Dirac nodal lines split into three pairs of spinful Weyl rings. These nodal lines lies closely near the Fermi level, they are pure and clean without other nontrivial bands, which is scarce in real materials and making the exotic topological properties easily accessible in experiment. The coexistence of superconductivity with high transition temperature and topological states in WN and its 2D film provide a promising platform for exploring topological superconductivity.
description: submitted to peer review jounal
The Lee-Wick Fields out of Gravity
Creators: name: Wu, Feng
name: Zhong, Ming
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the Maxwell-Einstein theory in the framework of effective field theories. We show that the modified one-loop renormalizable Lagrangian due to quantum gravitational effects contains a Lee-Wick vector field as an extra degree of freedom in the theory. Thus gravity provides a natural mechanism for the emergence of this exotic particle.
description: 8 pages, 1 figure, typos fixed
Influence of Gold Catalytic Layer on Growth of Silicon Nanowires
Creators: name: Müller, M.
name: Duong, D.P.
name: Stuchlikova, T.H.
name: Stuchlík, J.
name: Ukraintsev, E.
name: Ledinsky, M.
name: Fejfar, A.
name: Kocka, J.
Publisher: name: WIP
Year: 2012
Subjects: Material Studies, New Concepts and Ultra-High Efficiency
New Materials, Cells and Modules

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 361-363
description: In this work, layers of silicon nanowires on metal/glass substrate were studied. The substrate was formed by thin layer of
gold on the Corning C7059 glass prepared using vacuum evaporation. Heating of gold layers in vacuum at 350 °C led to
formation of small gold islands with lateral sizes depending on the thickness of the original layer. The size of islands started
at 10 nm. Plasma enhanced chemical vapour deposition was used for the growth of silicon nanowires.
Various thicknesses of metal layers and different methods of thermal annealing of metal layer were investigated. Thermal
annealing in the hydrogen atmosphere at 350 °C and in RF discharge in hydrogen atmosphere at 180 °C were used for
comparison with vacuum thermal treatment.
Catalytic metal layers on the Corning substrate were characterised by SEM and AFM and the silicon nanowire layers by
SEM. Typical nanowire was 50 nm thick and 3500 nm long. Also the type of crystallinity of nanowires was investigated by
micro–Raman spectroscopy.