cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Limitation of industrial phosphorus-diffused emitters by SRH recombination
Creators: name: Min, Byungsul
name: Wagner, Hannes
name: Dastgheib-Shirazi, Amir
name: Altermatt, Pietro P.
Publisher: name: Amsterdam : Elsevier
Year: 2014
Subjects: subject: Emitter
subject: Phosphorus precipitates
subject: Recombination
subject: Silicon solar cells
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: It is commonly assumed in the PV community that Auger recombination is the dominant loss mechanism in heavily phosphorusdoped emitters of industrial Si solar cells. Contrary to this assumption, we show in this work that most of the losses are caused by Shockley-Read-Hall (SRH) recombination via defect states introduced by inactive phosphorus. Using numerical device simulations, we successfully reproduce all the measured J0e values of a series of profiles (with various concentrations of inactive phosphorus) with an effective SRH capture crosses-section for holes, σp = 7.5×10-18 cm2. The composition of inactive phosphorus (e.g. in form of clusters of interstitial phosphorus, fine and rod-shaped precipitates) may vary under different fabrication conditions, hence we do not claim that this σp value is globally valid. However, because the series of profiles is representative for many emitters in mass production, our result implies generally higher SRH than Auger recombination rates and has decisive implications on the improvement of such industrial emitters: many emitters have not yet reached the Auger-limit and they may still be significantly improved by reducing their density of inactive phosphorus.
High-quality exfoliated crystalline silicon foils for solar cell applications
Creators: name: Niepelt, Raphael
name: Hensen, Jan
name: Knorr, Alwina
name: Steckenreiter, Verena
name: Kajari-Schröder, Sarah
name: Brendel, Rolf
Publisher: name: Amsterdam : Elsevier
Year: 2014
Subjects: subject: Carrier lifetime
subject: Exfoliation
subject: Kerf-free
subject: Layer transfer
subject: Photovoltaic
subject: Spalling
subject: Wafering
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Kerfless wafering techniques offer a significant cost saving potential via the reduction of silicon consumption. In this paper, we examine thin single crystalline Si foils that were fabricated by a novel kerfless thermo-mechanical exfoliation method utilizing evaporated Al with regard to their suitability for solar cell applications. The foils are 50-80 μm thick and smooth to visual inspection across the almost entire surface. We measure the effective minority carrier lifetimes of the foils and the remaining parent substrates by quasi-steady-state photoconductance (QSSPC) and spatially resolved by dynamically calibrated steady state infrared carrier lifetime mapping (dynILM). We find lifetimes of above 120 μs for kerfless exfoliated 0.5 Ωcm p-type float-zone (FZ) Si layers. With an additional etching step after exfoliation, we obtain effective lifetimes of above 200 μs. The measurements reveal that there is no critical lifetime degradation due to exfoliation-induced surface features and thus the exfoliated layers are well-suited for high-quality solar cells.
STATISTICAL ANALYSIS OF SUSTAINABLE DEVELOPMENT OF MODERN ECONOMY
Creators: name: Olisaeva, Alisa
name: Galazova, Marina
name: Baysultanova, Leyla
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: sustainable development
food security
sustainable development indicators

description: The purpose of this article is to provide a statistical analysis of the sustainable development indicators of the Russian Federation within the framework of the United Nations 2030 Agenda, in particular food security as it relates to Sustainable Development Goal 2 Eradicate hunger, achieve food security and improved nutrition, and promote sustainable agriculture. The importance of solving the problem of food security and healthy nutrition is emphasized. In the course of scientific research, general and special methods of scientific knowledge were applied: analysis, synthesis and comparison, as well as statistical data analysis and visualization.
Ethylene-responsive transcription factors orchestrating AM-dependent fatty acid biosynthesis act in complexes with Nuclear Factor-Y TFs and the key AM regulator RAM1
Creators: name: Hartung, Lisa
Publisher: name: Hannover : Instititutionelles Repositorium der Leibniz Universität Hannover
Year: 2021
Subjects: subject: Arbuskuläre Mykorrhiza
subject: ERF Transkriptionsfaktoren
subject: Fettsäurebiosynthese
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Der Aufbau und die Etablierung der arbuskulären Mykorrhiza (AM) Symbiose zwischen Medicago truncatula und Rhizophagus irregularis wird durch eine definierte Gruppe von Genen, die transkriptionell umprogrammiert werden, gezielt gelenkt. Neben anderen Familien von Transkriptions Faktor (TF) Genen gehören auch ETHYLEN RESPONSIVE (ERF) TF Gene zu AM-abhängig regulierten TF Genen. Dies deutet auf eine Rolle der ERF TF Gene während der AM hin. In vorangegangenen Publikationen konnte gezeigt werden, dass neben dem AM-Regulator RAM1 (ein GRAS TF) drei ERF TFs (WRI5A, WRI5B und WRI5C) eine wichtige Rolle während der AM-abhängigen Fettsäure (FS) Biosynthese spielen. Diese Daten weisen auf regulatorische Netzwerke während der AM-abhängigen FS Biosynthese hin, konnten aber bisher nicht Fragen nach den genauen Zielen der regulatorischen TFs beantworten. Um diese Fragen zu klären, wurden sieben AM-hochregulierte ERF TF Gene (WRI5A, WRI5B, WRI5C, 460730, 15867, 21492 und 25005) in der vorliegenden Dissertation analysiert. Reportergen-Analysen in mykorrhizierten Wildtyp, ram1-1 und pt4-2 mutierten Wurzeln zeigen, dass die Genexpression aller sieben ERF TF Gene von einer Arbuskel-haltigen Zelle mit funktionierendem Nährstoff-Austausch abhängig ist. Des Weiteren führte das silencing einiger ERF TF Kandidatengene durch RNA-Interferenz (RNAi) zur Herunterregulierung von AM-Markergenen wie MtPT4 und MtRam1 sowie von Genen, die Komponenten der AM-abhängigen FA Biosynthese codieren. Ebenso konnten Effekte auf andere ERF TF Kandidatengene gezeigt werden, was darauf schließen lässt, das ERF TFs sich gegenseitig regulieren. Yeast-1-Hybrid (Y1H) Interaktionsstudien konnten eine direkte Interaktion von Promotoren von Genen, die Komponenten der AM-abhängigen FS Biosynthese codieren mit verschiedenen ERF TFs, sowie die gegenseitige Interaktion mit Promotoren von ERF TF Genen nachweisen. Zusätzlich zeigten Y2H und Bimolecular Flourescence Complementation (BiFC) Studien, dass ERF TFs in regulatorischen Komplexen mit TFs der Nuclear-Factor-Y (NF-Y) Familie und MtRAM1 ihre Funktion ausüben. Basierend auf den Resultaten dieser Doktorarbeit wird die AM-abhängige FS Biosynthese in M. truncatula daher von ERF-RAM1 bzw. ERF-NF-Y Komplexen reguliert.
SUSTAINABLE DEVELOPMENT: ECONOMIC EFFICIENCY OF ECOSYSTEMS
Creators: name: Suleymanov, Magomed
name: Atamas, Evgeniya
name: Aliheydar Shahmarov
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: sustainable development
greenhouse
gas emissions
environmental challenges
environmental protection
advanced technologies

description: To date, the generally recognized global trends have become the principles of sustainable development adopted by the UN, which are understood as the evolutionary development of civilization based on innovations while meeting the vital needs of the population of different states, including energy supply and environmental conservation. Being associated with a number of crises, the growing turbulence of the global economy and the political system of the modern world, constantly seeing an increase in the number of challenges to global trends towards sustainable development, it is worth reconsidering the approach to the concept of Sustainable Development. Attempts to undermine the significance of the UN 2030 Agenda for Sustainable Development adopted in 2015 under the influence of the COVID-19 pandemic quickly gave way to the importance of uniting efforts aimed at achieving the 17 Goals that are the basis of governance (SDGs). Efforts at many levels from states and their regional entities to municipalities, corporations, or ultimately the level of specific people in society by and large. Attention to sustainable development issues is also growing against the backdrop of an obvious deterioration in the climate situation and the need to create energy security.
TECHNOLOGIES OF INFORMATION SUPPORT OF TERRITORIAL SAFETY MANAGEMENT
Creators: name: Nicheporchuk, Valeriy
name: Postnikova, Ulyana
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: social-natural-technogenic system
safety
territorial management

description: The paper presents approaches aimed at solving the problems of territorial administration related to: limited availability of integrated monitoring data, the impossibility of reproducing risk calculations by independent groups of researchers; the general nature of recommendations on the composition and scope of preventive measures, formed based on the results of risk calculations and not taking into account the specifics of S-N-T systems; lack of indicators for assessing the impact on safety of the implemented preventive measures; lack of scientific substantiation of management processes, the absence of generally accepted models for forecasting the security of territories for a long-term period, which allow more systematic planning of strategic activities.
TERRITORIAL RISKS ASSESSMENT OF NATURAL HAZARDS
Creators: name: Postnikova, Ulyana
name: Taseiko, Olga
name: Anikin, Maksim
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: risk-based approach
natural hazards
territorial management

description: The socio-economic development of the territories is determined by the solution of state policy tasks, the effectiveness of the application of organizational and managerial practices, the prediction of possible dangerous events and the adoption of measures to reduce the risk of accidents and natural disasters. Modern trends in territorial administration are associated with the use of a risk-based approach. Information on the frequency of occurrence of adverse events can serve as a basis for identifying sources of various risks levels. The presence of an unstructured data array predetermines the need to create an interconnected system of risk factors. The purpose of the study is to analyze the vulnerability of the Krasnoyarsk region territories to hazardous natural phenomena. This paper analyzes floods and forest fires, which are the most typical natural hazards for the areas under consideration. To identify areas most prone to natural hazards, a ranking was carried out according to the level of risk using GIS technologies.
Laser-welded interconnection of screen-printed Si solar cells
Creators: name: Schulte-Huxel, Henning
name: Blankemeyer, Susanne
name: Steckenreiter, Verena
name: Kajari-Schröder, Sarah
name: Brendel, Rolf
Publisher: name: Amsterdam : Elsevier
Year: 2014
Subjects: subject: Al metallization
subject: Al paste
subject: Cell interconnection
subject: Laser micro welding
subject: Module integration
subject: Perc solar cells
subject: Screen printed solar cells
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We demonstrate the laser welding of Al interconnects to the BSF rear-side of screen-printed two-side-contacted solar cells. The Al paste on the rear side of solar cell is laser-welded to an Al foil. This reduces the silver consumption of the solar cells by making silver pads on the rear side obsolete. Our proof-of-concept modules are free of laser damage. A 3-cell-module from 6" solar cells shows no change in fill factor within the statistical measurement uncertainty after artificial aging in 500 humidityfreeze cycles.
THE ESSENCE OF THE DELPHI METHOD AND ITS MAIN ADVANTAGES AND DISADVANTAGES
Creators: name: Berkaeva, Albina
name: Yablochnikov, Sergey
name: Butyrin, Andrey
name: Tararyshkina, Irina
name: Tofig Mansurov
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: the Delphi method
managerial decisions
brainstorming
questionnaire method
interview
expert assessment
statistics

description: This article is devoted to the study of the essence and main meaning of the Delphi method, developed in the 50s of the 20th century in the United States. In those years, this method was used to identify the impact of scientific and technological progress in matters of a military nature. Now, the Delphi method is universal and can be applied in any branch of activity, which increases its relevance. In addition, we have studied the main advantages and disadvantages of using this method at the level of world experience. We also considered the problems of using the Delphi method at the level of the Russian economy.
A control protocol of finite dimensional quantum systems
Creators: name: Tang, Jianju
name: Fu, H. C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An exact and analytic control protocol of two types of finite dimensional quantum systems is proposed. The system can be drive to an arbitrary target state using cosine classical fields in finite cycles. The control parameters which are time periods of interaction between systems and control fields in each cycles are connected with the probability amplitudes of target states via triangular functions and can be determined analytically.
description: 7 pages, two figures
First Principle-based Analysis of Single-Walled Carbon Nanotube and Silicon Nanowire Junctionless Transistors
Creators: name: Ansari, Lida
name: Feldman, Baruch
name: Fagas, Giorgos
name: Lacambra, Carlos Martinez
name: Haverty, Michael G.
name: Kuhn, Kelin J.
name: Shankar, Sadasivan
name: Greer, James C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Junctionless transistors made of silicon have previously been demonstrated experimentally and by simulations. Junctionless devices do not require fabricating an abrupt source-drain junction and thus can be easier to implement in aggressive geometries. In this paper, we explore a similar architecture for aggressively scaled devices with the channel consisting of doped carbon nanotubes (CNTs). Gate all around (GAA) field effect transistor (FET) structures are investigated for n- and p-type doping. Current-voltage characteristics and sub-threshold characteristics for a CNTbased junctionless FET is compared with a junctionless silicon nanowire (SiNW) FET with comparable dimensions. Despite the higher on-current of the CNT channels, the device characteristics are poorer compared to the silicon devices due to the smaller CNT band gap.
Nonlinear instability of scalar fields on extremal black holes
Creators: name: Aretakis, Stefanos
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We prove a new type of finite time blow-up for a class of semilinear wave equations on extremal black holes. The initial data can be taken to be arbitrarily close to the trivial data. The first singularity occurs along the (degenerate) future event horizon. No analogue of this instability occurs for subextremal black holes or the Minkowski spacetime.
description: 6 pages, 2 figures, to appear in Phys. Rev. D
Generalization of exotic quark searches
Creators: name: Garberson, F.
name: Golling, T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: General limits on exotic heavy quarks T, B and X with masses above 300 GeV are presented for arbitrary branching fractions of T=>Wb, T=>Zt, T=>Ht, B=>Wt, B=>Zb, B=>Hb and X=>Wt. The results are based on a CMS search in final states with three isolated leptons (electron or muon) or two isolated leptons with the same electric charge. Exotic heavy quark pair production through the strong interaction is considered. In the context of vector-like quark models, T quarks with a mass mT < 480 GeV and mT < 550 GeV are excluded for weak isospin singlets and doublets, respectively, and B quarks with a mass mB < 480 GeV are excluded for singlets, all at 95% confidence level. Mass limits at 95% confidence level for T and B singlets, (T,B) doublets and (X,T) doublets are presented as a function of the corresponding heavy quark masses. For equal mass mT = mB and mX = mT vector-like quarks are excluded at 95% confidence level with masses below 550 GeV for T and B singlets, 640 GeV for a (T,B) doublet and 640 GeV for a (X,T) doublet.
description: 10 pages, 5 figures, one table
THE ESTIMATED REASON FOR THE LOW EFFICIENCY OF HYDROCYCLONES IN PETROLEUM INDUSTRY
Creators: name: Gafar Ismayilov
name: Amrah Gulubayli
name: Musayev, Samir
name: Musayeva, Shafa
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Dispersed systems
hydrocyclone
multiphase flow
shear force
phase interaction
suspension

description: The real media encountered in oil and gas production are usually dispersed, i.e., they are systems consisting of at least two phases, with one of the phases being distributed into the other. Production, collection and transportation of oil and gas are based on multiphase technology, including the processes of lifting from the reservoir, transportation to separation points, separation and infield transport of multiphase mixtures, which consist of oil, gas, formation water and mechanical impurities. In most technological processes of oil and gas production and transport of hydrocarbons, the separation of dispersed systems is necessary. In practice, the unsuitability of hydrocyclone technology for separating emulsions has been established, although hydrocyclones are effectively used for cleaning suspensions, for separating solid particles from liquids, for example, for cleaning drilling fluids from sludge. Recent studies have established that cylindrical multiphase flows are based on the interaction of continuous and dispersed phases, the driving force of which is an additional shear force directed towards the flow axis. In the paper, according to the multiphase technology, the reason for the low efficiency of hydrocyclones for multiphase disperse systems was analyzed. The condition of equality of the shear and centrifugal forces during the operation of the hydrocyclone is shown. It has been established that, based on the correct choice of technological parameters, it is possible to avoid the negative effect of the shear force in cylindrical flows on the operation of hydrocyclones.
THE IMPACT AND PROSPECTS OF USING ARTIFICIAL INTELLIGENCE IN THE ECONOMY
Creators: name: Aguzarova, Larisa
name: Aguzarova, Fatima
name: Tsallaeva, Kamilla
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: economics
artificial intelligence
neural networks
machine learning
digital economy

description: This paper discusses issues related to the development of technologies and the relationship of this process with economic processes. Due to the rapid digitalization, the importance and role of artificial intelligence are growing. At the same time there are many problems and they are considered in this paper: unemployment of technical workers, a security problem that is associated with the confidentiality, the existing neural networks cannot be suitable for use in all industries etc. When using the generalization method, the authors have made relevant conclusions and recommendations for using Artificial Intellect: to solve the following universal tasks: automatic translation; getting business intelligence; recognition of visual signs; character recognition; information extraction; understanding and analyzing texts; image analysis; ensuring information security and protection against cyber-attacks; speech recognition; robotic tools for the implementation of tasks at different levels and in different fields.
THE KURA ACTIVE FAULT – POTENTIAL SOURCE OF SIGNIFICANT HAZARD
Creators: name: Strom, Alexander
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Kura fault
surface rupture
earthquake magnitude
single-event displacement

description: An active fault stretching for more than 100 km along the Kura River between the tailing part of the Mingeçevir Reservoir in the east and the Azerbaijan-Georgia border in the west – the so-called Kura fault – is described in brief based on the analysis of space images. This active reverse fault with distinct evidence of Late Quaternary movements crosses the waterfronts of the Shamkir and the Enikend reservoirs. Considering its expressiveness and location just at the foundations of the hydraulic structures it seems that hazard posed by this active fault could be underestimated and that more efforts should be undertaken to reveal its recent history.
Thermodynamics in Black-hole/CFT Correspondence
Creators: name: Chen, Bin
name: Zhang, Jia-ju
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The area law of Bekenstein-Hawking entropy of the black hole suggests that the black hole should have a lower-dimensional holographic description. It has been found recently that a large class of rotating and charged black holes could be holographically described a two-dimensional (2D) conformal field theory (CFT). We show that the universal information of the dual CFT, including the central charges and the temperatures, is fully encoded in the thermodynamics laws of both outer and inner horizons. These laws, characterizing how the black hole responds under the perturbation, allows us to read different dual pictures with respect to different kinds of perturbations. The remarkable effectiveness of this thermodynamics method suggest that the inner horizon could play a key role in the study of holographic description of the black hole.
description: 8 pages. Essay awarded honourable mention in the Gravity Research Foundation 2013 Awards for Essays on Gravitation
THE LABOR CONTRIBUTION OF THE DEPORTED PEOPLES TO THE DEVELOPMENT OF THE ECONOMY OF CENTRAL ASIA IN 1940-1950
Creators: name: Sapiyat Tsutsulaeva
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: deportation
economy
adaptation
deported peoples
employees at agricultural
agro-industrial experience

description: The historical labor contribution of exiled Chechens and Ingush to the mining sector of Central Kazakhstan was large in the 1940s and 1950s. Throughout this period, a large number of exiles were recruited to work in different industrial and mineral-mining companies. During this period they began to recruit workers for working in various industrial enterprises, including mine projects. Moreover, they worked in mine and other mining companies. Their activities were made by miners, coal mines and other industrial projects that helped to develop the development of Kazakhstan's economic system. The deportation of Chechens and Ingush were a repression with social and economic consequences for the deportees themselves. This forced displacement of Kazakhstanis and living in difficult conditions in new settlements caused great problems and difficulties for them, as well as for the economy of Kazakhstan. Their forced displacement and living in difficult conditions made it possible to solve many problems with economic development at all.
A class of exactly solved assisted hopping models of active-absorbing state transitions on a line
Creators: name: Dandekar, Rahul
name: Dhar, Deepak
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We construct a class of assisted hopping models in one dimension in which a particle can move only if it does not lie in an otherwise empty interval of length greater than $n+1$. We determine the exact steady state by a mapping to a gas of defects with only on-site interaction. We show that this system undergoes a phase transition as a function of the density $ρ$ of particles, from a low-density phase with all particles immobile for $ρ\le ρ_c = \frac{1}{n+1}$, to an active state for $ρ> ρ_c$. The mean fraction of movable particles in the active steady state varies as $(ρ- ρ_c)^β$, for $ρ$ near $ρ_c$. We show that for the model with range $n$, the exponent $β=n$, and thus can be made arbitrarily large.
description: 4 pages
Resources needed for non-unitary quantum operations
Creators: name: Uzdin, Raam
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Non-unitary operations generated by an effective non-Hermitian Hamiltonian can be used to create quantum state manipulations which are impossible in Hermitian quantum mechanics. These operations include state preparation (or cooling) and non-orthogonal state discrimination. In this work we put a lower bound on the resources needed for the construction of some given non-unitary evolution. Passive systems are studied in detail and a general feature of such a system is derived. After interpreting our results using the singular value decomposition, several examples are studied analytically. In particular, we put a lower bound on the resources needed for non-Hermitian state preparation and non-orthogonal state discrimination.
THE MAIN TRENDS IN THE LABOUR MARKET DEVELOPMENT IN THE CONTEXT OF THE ECONOMY DIGITALIZATION
Creators: name: Dzobelova, Valentina
name: Bakunin, Sergey
name: Lukinov, Vitaly
name: Erofeeva, Viktoria
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: ICT
trends
digitalization
digital economy
labour market
robotics
Industry 4.0

description: The article considers the influence of the digital economy development on the labour market, identifying its main advantages and disadvantages. The increase in the unemployment rate due to the disappearance of a number of obsolete professions, that have lost their relevance in the context of modern developing relations, can be attributed to the fundamental negative factors of the labour market digitalization. In addition, after analyzing the opinions of various domestic and foreign experts, it is concluded that it is impossible until 2030 to completely replace human labour with robotics, despite the rapid development of information and communication technologies.
Kohärenz in miniaturisierten Speicher- und Leiterstrukturen für neutrale Atome
Creators: name: Buchkremer, Felix B.J.
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Atom optics
subject: decoherence
subject: microstructures
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Possible Nematic Order Driven by Magnetic Fluctuations in Iron Pnictides
Creators: name: Song, Kok Wee
name: Liang, Yung-Ching
name: Lim, Hokiat
name: Haas, Stephan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In this paper, instabilities of the isotropic metallic phase in iron pnictides are investigated. The relevant quartic fermionic interaction terms in the model are identified using phase space arguments. Using the functional integral formalism, a Hubbard-Stratonovich transformation is used to decouple these quartic terms. This procedure introduces several bosonic fields which describe the low-energy collective modes of the system. By studying the behavior of these collective modes, a possible instability is found in the forward scattering channel of the isotropic phase driven by magnetic fluctuations. Using mean field analysis, we obtain a static and homogeneous ground state. This ground state is metallic, but the electron Fermi pockets are distorted unequally at different pockets in momentum space. This results in a desirable nematic ordering which breaks the lattice C4 symmetry but preserves translational symmetry and may explain several experimental observations.
description: 9 pages, 2 figures
The QED contribution to $J/ψ$ plus light hadrons production at B-factories
Creators: name: He, Zhi-Guo
name: Wang, Jian-Xiong
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: To understand the direct $J/ψ+X_{\mathrm{non-c\bar{c}}}$ production mechanism in $e^{+}e^{-}$ annihilation, in this work, we propose to measure the inclusive $J/ψ$ plus light hadrons (LH) production at B-factories and present a detailed study on its QED production due to $ψ(2S)$ feed-down, where the $ψ(2S)$ are produced in $e^{+}e^{-}\to ψ(2S)+γ$ and $e^{+}e^{-}\to ψ(2S)+f\bar{f}, f=lepton,light quark$, and QED contribution to direct $J/ψ+q\bar{q}$ production with $q=u,d,s$ quark. We find that the QED contribution is huge in the whole phase space region, but can be reduced largely and is in the same order as the QCD contribution when a suitable cut on the angel $θ_{J/ψ}$ between $J/ψ$ and the $e^{+}e^{-}$ beam is made. In this way, the cross section of $J/ψ+LH$ QCD production %which was predicted theoretical at next-to-leading order QCD together with relativistic correction, can be obtained by subtracting the QED contribution from the experimental measurement on inclusive $J/ψ$ plus light hadrons. To help to remove the QED background, we also calculate the angular and momentum distribution of $J/ψ$ in the QED contribution.
description: 19 pages, 6 figures
Generating efficient quantum circuits for preparing maximally multipartite entangled states
Creators: name: Sadowski, Przemysław
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we provide a method for generating quantum circuits preparing maximally multipartite entangled states using genetic programming. The presented method is faster that known realisations thanks to the applied fitness function and several modifications to the genetic programming schema. Moreover, we enrich the described method by the unique possibility to define an arbitrary structure of a system. We use the developed method to find new quantum circuits, which are simpler from known results. We also analyse the efficiency of generating entanglement in the spin chain system and in the system of complete connections.
Untersuchungen zur photokatalytischen NOx-Reduktion in sauerstoffreichen Modell-Abgasen
Creators: name: Bredemeyer, Niels Holger
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Photocatalysis
subject: NOx-reduction
subject: titanium dioxide
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Themenbereich: Zur Theorie und Empirie der typenbildenden Mentalitätsanalyse
Creators: name: Bremer, Helmut
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Habitus/mentality
subject: social milieu
subject: focus group
subject: adult education
subject: church
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie

description: [no abstract]
Optimierung von MIS-Inversionsschichtsolarzellen
Creators: name: Peters, Carsten
Publisher: name: Hannover : Universität
Year: 2005
Subjects: subject: MIS-Kontakt
subject: Inversionsschichtemitter
subject: Cäsiumchlorid
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
"War came to our place" : eine Sozialgeschichte des Krieges im Luwero-Dreieck, Uganda 1981 - 1986
Creators: name: Schubert, Frank
Publisher: name: Hannover : Universität
Year: 2005
Subjects: subject: Afrika
subject: Bürgerkrieg
subject: oral history
subject: Dewey Decimal Classification::900 | Geschichte und Geografie::960 | Geschichte Afrikas

description: [no abstract]
Using Spoofax to Support Online Code Navigation
Creators: name: Mosses, Peter D.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Spoofax is a language workbench. A Spoofax language specification generally includes name resolution: the analysis of bindings between definitions and references. When browsing code in the specified language using Spoofax, the bindings appear as hyperlinks, supporting precise name-based code navigation. However, Spoofax cannot be used for browsing code in online repositories. This paper is about a toolchain that uses Spoofax to generate hyperlinked twins of code repositories. These generated artefacts support the same precise code navigation as Spoofax, and can be browsed online. The technique has been prototyped on the CBS (Component-Based Semantics) specification language developed by the PLanCompS project, but could be used on any language after specifying its name resolution in Spoofax.
description: Accepted for publication in Proc. Eelco Visser Commemorative Symposium (EVCS 2023)
Synthese, Kristallstrukturen und magnetische Eigenschaften von Carboxylaten des Gadoliniums
Creators: name: Rohde, Alexander
Publisher: name: Hannover : Universität
Year: 2005
Subjects: subject: Gadoliniumcarboxylate
subject: Magnetismus
subject: Kristallstruktur
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Helianthemum canum
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: H. canum (L.) Baumg. Wohl nur in der var. vineale (Willd.) Syme; die var.alpinum (Willk.) dürfte zu Unrecht angegeben worden sein. 2:Branson (Wolf 1874); La Tine ob Isieres (Beauverd) und im selben Gebiet:Vertsan (Wolf), hier bei etwa1750m reichlich(Kunz1952);Schlucht der Lizerne unter dem Chemin Neuf(Beauverd)- 3:Vence (Exk. Soc. Bot. Geneve 1915); zwischen Vence und Sembrancher, angeblich var. alpinum (Willk.) (Gams).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
The role of Coulomb and exchange interaction on the Dzyaloshinskii-Moriya interaction(DMI) in BiFeO3
Creators: name: Feng, Hong-Jian
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ab initio calculations show that the Dzyaloshinskii-Moriya interaction(DMI)and net magnetization per unit cell in BiFeO3 are reduced when U is increasing from 0 to 2.9 eV, and independent of $J$. Interestingly, the DMI is even destroyed as $U$ exceeds a critical value of 2.9 eV. We propose a simple model to explain this phenomenon and present the nature of the rotation of the magnetization corresponding to altered antiferrodistortive distortions under DMI in BiFeO3.
[Invoice dated March 22, 1894 for wire]
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 1894
Subjects: Invoices--New York (State)--New York--Specimens.
Wire products industry--New York (State)--New York.

description: Invoice from John A. Roebling's Sons Co. for 4 1/8 pounds of DCC Magnet Wire
Disentangling electronic and vibronic coherences in two-dimensional echo spectra
Creators: name: Kreisbeck, Christoph
name: Kramer, Tobias
name: Aspuru-Guzik, Alan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The prevalence of long-lasting oscillatory signals in the 2d echo-spectroscopy of light-harvesting complexes has led to a search for possible mechanisms. We investigate how two causes of oscillatory signals are intertwined: (i) electronic coherences supporting delocalized wave-like motion, and (ii) narrow bands in the vibronic spectral density. To disentangle the vibronic and electronic contributions we introduce a time-windowed Fourier transform of the signal amplitude. We find that 2d spectra can be dominated by excitations of pathways which are absent in excitonic energy transport. This leads to an underestimation of the life-time of electronic coherences by 2d spectra.
description: 6 pages, 6 figures
Photoelektrochemische Ätz- und Oxidationstechnik für AlGaN und Anwendung in Heterostruktur-Feldeffekttransistoren
Creators: name: Rotter, Thomas
Publisher: name: Hannover : Universität
Year: 2005
Subjects: subject: Photoelectrochemistry (PEC)
subject: aluminium gallium nitride (AlGaN)
subject: MOS heterostructure field effect transistor (MOS-HFET)
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Von computergraphischen zu haptischen Texturen : virtual reality für den Entwicklungsbereich Design/Styling in der Automobilindustrie
Creators: name: Schulze, Malte
Publisher: name: Hannover : Universität
Year: 2005
Subjects: subject: Haptik
subject: Texturen
subject: virtual reality
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: [no abstract]
Molekularbiologische und biochemische Untersuchungen stressinduzierter Proteine im Apoplasten der Gerste
Creators: name: Rupprecht, Ines
Publisher: name: Hannover : Universität
Year: 2005
Subjects: subject: Lectins
subject: apoplast
subject: stress
subject: Dewey Decimal Classification::500 | Naturwissenschaften::580 | Pflanzen (Botanik)

description: [no abstract]
Verteiltes Messen der Dienstgüte und Netzwerk-Performance in IP-Netzen
Creators: name: Siemens, Eduard
Publisher: name: Hannover : Universität
Year: 2005
Subjects: subject: Network
subject: measurement
subject: performance
subject: QoS
subject: service quality
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: [no abstract]
Probing Correlations, Indistinguishability and Entanglement in Microwave Two-Photon Interference
Creators: name: Lang, C.
name: Eichler, C.
name: Steffen, L.
name: Fink, J. M.
name: Woolley, M. J.
name: Blais, A.
name: Wallraff, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Interference at a beam splitter reveals both classical and quantum properties of electromagnetic radiation. When two indistinguishable single photons impinge at the two inputs of a beam splitter they coalesce into a pair of photons appearing in either one of its two outputs. This effect is due to the bosonic nature of photons and was first experimentally observed by Hong, Ou, and Mandel (HOM) [1]. Here, we present the observation of the HOM effect with two independent single-photon sources in the microwave frequency domain. We probe the indistinguishability of single photons, created with a controllable delay, in time-resolved second-order cross- and auto-correlation function measurements. Using quadrature amplitude detection we are able to resolve different photon numbers and detect coherence in and between the output arms. This measurement scheme allows us to observe the HOM effect and, in addition, to fully characterize the two-mode entanglement of the spatially separated beam splitter output modes. Our experiments constitute a first step towards using two-photon interference at microwave frequencies for quantum communication and information processing, e.g. for distributing entanglement between nodes of a quantum network [2, 3] and for linear optics quantum computation [4, 5].
Effiziente Erzeugung von Harmonischen mit einem KrF-Kurzpulslasersystem und Untersuchungen zur parametrischen Verstärkung im VUV und XUV
Creators: name: Reinhardt, Carsten
Publisher: name: Hannover : Universität
Year: 2005
Subjects: subject: Nonlinear optics
subject: harmonic generation
subject: parametric amplification
subject: KrF laser
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Insulator-to-metal transition of SrTiO3:Nb single crystal surfaces induced by Ar+ bombardment
Creators: name: Rodenbücher, C.
name: Wicklein, S.
name: Waser, R.
name: Szot, K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this paper, the effect of Ar+ bombardment of SrTiO3:Nb surface layers is investigated on the macro- and nanoscale using surface-sensitive methods. After bombardment, the stoichiometry and electronic structure are changed distinctly leading to an insulator-to-metal transition related to the change of the Ti "d" electron from d0 to d1 and d2. During bombardment, conducting islands are formed on the surface. The induced metallic state is not stable and can be reversed due to a redox process by external oxidation and even by self-reoxidation upon heating the sample to temperatures of 300°C.
description: 4 pages, 4 figures
Speed of Sound in Hybrid Stars and the Role of Bag Pressure in the Emergence of Special Points on M-R Variation of Hybrid Stars
Creators: name: Pal, Suman
name: Podder, Soumen
name: Sen, Debashree
name: Chaudhuri, Gargi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the hybrid star (HS) properties with the help of Maxwell construction. For the purpose we choose a fixed hadronic model and four different forms of MIT bag model for the quark phase. We investigate thoroughly the effects of the different parameters of the bag model on the speed of sound in HS matter and the structural properties of HSs in the light of the various recent constraints on them from astrophysical observations. We also examine the importance of each parameter involved in these four forms of bag model in the context appearance of special points (SPs) in the mass-radius (M-R) variation of HSs. We find that among all these parameters the bag pressure play the most significant role in the emergence of the SPs in the M-R dependence of HSs.
description: Accepted for Publication in Physical Review D. arXiv admin note: text overlap with arXiv:2209.13890
Fermentative Gewinnung von Paramylon aus Euglena gracilis auf Nebenprodukten der Stärkeindustrie in einer Pilotanlage
Creators: name: Ryll, Joachim
Publisher: name: Hannover : Universität
Year: 2005
Subjects: subject: Paramylon
subject: beta-1,3-glucan
subject: Euglena gracilis
subject: 2-D-fluorescence spectroscopy
subject: insitu-microscopy
subject: online-monitoring
subject: potato fruit juice
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: [no abstract]
THEORETICAL AND CONCEPTUAL APPROACHES TO STUDYING THE NATURE OF ECONOMIC GROWTH
Creators: name: Gudieva, Alina
name: Sitokhova, Tatyana
name: Kelekhsaeva, Marianna
name: Suleymanov, Magomed
name: Kantemir Khachirov
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: economic growth
quantitative theory
development
GDP

description: The subject of this article is the study of the theoretical foundations of the phenomenon of economic growth. During the study, the authors chose a general retrospective methodology and predominantly historical analysis; The history of the emergence and development of the concept of “economic growth” is considered. In accordance with this, the authors touch upon the problem of the general philosophical foundations of economic teachings, which formed the basis of the concept of modern economic growth and economic development. The research began in the works of Adam Smith and the first political economists, so special attention is paid to the historical period in which these scientists lived and worked. The following is a general overview of the first modern models of economic growth and some approaches to its assessment.
title: Цифровая схемотехника
Creators: name: ELS IPR BOOKS
Publisher: name: Профобразование
Year: 2022

description: В практикуме рассмотрены логические элементы, комбинационные логические устройства. Описаны последовательные логические устройства, логический автомат. Приведены методические указания по выполнению лабораторных работ в виртуальных симуляторах электронных схем, а также исследуемые схемы основных электронных модулей цифровой схемотехники. Практикум предназначен для студентов, обучающихся по укрупненным группам специальностей среднего профессионального образования 09.00.00 «Информатика и вычислительная техника», 10.00.00 «Информационная безопасность», 11.00.00 «Электроника, радиотехника и системы связи», изучающих дисциплины «Схемотехника», «Цифровая схемотехника».
Composition of simplicial complexes, polytopes and multigraded Betti numbers
Creators: name: Anton, Ayzenberg
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 05E45 (Primary), 52B11, 52B05, 55U10, 13F55 (Secondary)

description: For a simplicial complex K on m vertices and simplicial complexes K1,...,Km a composed simplicial complex K(K1,...,Km) is introduced. This construction generalizes an iterated simplicial wedge construction studied by A. Bahri, M. Bendersky, F. R. Cohen and S. Gitler and allows to describe the combinatorics of generalized joins of polytopes P(P1,...,Pm) defined by G. Agnarsson. The composition defines a structure of an operad on a set of finite simplicial complexes. We prove the following: (1) a composed complex K(K1,...,Km) is a simplicial sphere iff K is a simplicial sphere and Ki are the boundaries of simplices; (2) a class of spherical nerve-complexes is closed under the operation of composition (3) finally, we express multigraded Betti numbers of K(K1,...,Km) in terms of multigraded Betti numbers of K, K1,...,Km using a composition of generating functions.
description: 22 pages, 3 figures