cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Predicting the Number of Reported Bugs in a Software Repository
Creators: name: Jahanshahi, Hadi
name: Cevik, Mucahit
name: Başar, Ayşe
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The bug growth pattern prediction is a complicated, unrelieved task, which needs considerable attention. Advance knowledge of the likely number of bugs discovered in the software system helps software developers in designating sufficient resources at a convenient time. The developers may also use such information to take necessary actions to increase the quality of the system and in turn customer satisfaction. In this study, we examine eight different time series forecasting models, including Long Short Term Memory Neural Networks (LSTM), auto-regressive integrated moving average (ARIMA), and Random Forest Regressor. Further, we assess the impact of exogenous variables such as software release dates by incorporating those into the prediction models. We analyze the quality of long-term prediction for each model based on different performance metrics. The assessment is conducted on Mozilla, which is a large open-source software application. The dataset is originally mined from Bugzilla and contains the number of bugs for the project between Jan 2010 and Dec 2019. Our numerical analysis provides insights on evaluating the trends in a bug repository. We observe that LSTM is effective when considering long-run predictions whereas Random Forest Regressor enriched by exogenous variables performs better for predicting the number of bugs in the short term.
Spreading gossip in social networks
Creators: name: Lind, Pedro G.
name: da Silva, Luciano R.
name: Andrade, José S.
name: Herrmann, Hans J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We study a simple model of information propagation in social networks, where two quantities are introduced: the spread factor, which measures the average maximal fraction of neighbors of a given node that interchange information among each other, and the spreading time needed for the information to reach such fraction of nodes. When the information refers to a particular node at which both quantities are measured, the model can be taken as a model for gossip propagation. In this context, we apply the model to real empirical networks of social acquaintances and compare the underlying spreading dynamics with different types of scale-free and small-world networks. We find that the number of friendship connections strongly influences the probability of being gossiped. Finally, we discuss how the spread factor is able to be applied to other situations.
description: 10 pages, 16 figures, Revtex; Virt.J. of Biol. Phys., Oct.1 2007
279 Watt Metal-Wrap-Through Module Using Industrial Processes
Creators: name: Guillevin, N.
name: Heurtault, B.J.B.
name: Geerligs, L.J.
name: Anker, J.
name: Van Aken, B.B.
name: Bennett, I.J.
name: Jansen, M.J.
name: Berkeveld, L.
name: Weeber, A.W.
name: Bultman, J.H.
name: Zhao, W.
name: Wang, J.
name: Wang, Z.
name: Chen, Y.
name: Shen, Y.
name: Hu, Z.
name: Li, G.
name: Chen, J.
name: Yu, B.
name: Tian, S.
Publisher: name: WIP
Year: 2012
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 2025-2029
description: This paper describes results of metal wrap through (MWT) cells produced from n-type Czochralski
silicon wafers, and modules produced from those cells. The use of n-type silicon as base material allows for high
efficiencies: for front emitter contacted industrial cells, efficiencies up to 20% have been reported. MWT cells allow
even higher cell efficiency due to reduced front metal coverage, and additionally full back-contacting of the MWT
cells in a module results in reduced cell to module (CTM) fill factor losses.
MWT cells were produced by industrial process technologies. The efficiency of the MWT cells reproducibly exceeds
the efficiency of front contact cells based on the same technology by about 0.2-0.3%, and routes for further
improvement are analyzed.
60-cell modules were produced from both types of cells (MWT and H-pattern front emitter). In a direct module
performance comparison, the MWT module, based on integrated backfoil, produced 3% higher power output than the
comparable tabbed front emitter contact module. CTM current differences arise from the higher packing density, and
in this experiment from a lower reflectance of the backfoil, in MWT modules. CTM FF differences are related to
resistive losses in copper circuitry on the backfoil versus tabs. The CTM FF loss of the MWT module was reduced by
2.2%abs compared to the tabbed front emitter contact module.
Finally, simple process optimizations were tested to improve the n-type MWT cell and module efficiency. A module
made using MWT cells of 19.6% average efficiency resulted in a power output of 279W. The cell and module results
are analyzed and routes for improvements are discussed.
System-Technical Area Optimization of Large Scale Open Space PV Plants
Creators: name: Vanicek, P.
name: Stein, S.
Publisher: name: WIP
Year: 2012
Subjects: PV Systems
Large PV Power Plants and Distributed PV: System Aspects and Grid Connection

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 3788-3791
description: Due to the increasing limitation of acceptable open spaces as well as decreasing feed in tariffs, area
utilisation becomes more and more important. Hence we see an increasing number of systems with high shading
angles and low row spacing as well as low tilt angles. Consequently the question to be asked is: what is the optimum
between tilt and shading angle to realise the maximum yield, respectively how many modules may be installed on a
specific area and still reach a certain yield.
This paper discusses the various influencing factors on yield optimisation in regard to area utilisation. In addition to
row spacing and tilt angle as well as the resulting shading angle, the influence of module mounting (orientation:
portrait and landscape as well as the number of modules on top of each other) and different inverter concepts (central
inverters vs. Multi MPPT inverter) have been analysed. Such analyses have been made for three locations across
Europe. As a result, for each variant the yield reduction due to deviation of the optimum tilt angle and mutual shading
has been calculated. Consequently this study allows an approximation of area optimisation for most geographic and
climatic situations in Europe.
Impact of PV Storage Systems on Low Voltage Grids – A Study on the Influence of PV Storage Systems on the Voltage Symmetry of the Grid
Creators: name: Von Appen, J.
name: Schmiegel, A.U.
name: Braun, M.
Publisher: name: WIP
Year: 2012
Subjects: PV Systems
Large PV Power Plants and Distributed PV: System Aspects and Grid Connection

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 3822-3828
description: Changing PV market conditions foster the use of PV storage systems and bring new challenges to the
grid. This paper analyzes the influence of PV and PV battery systems on the voltage unbalance and the voltage magnitude.
Different system topologies are evaluated by simulating their behavior in two different test grids. A sensitivity
analysis is performed varying the size of the PV system, the size of the battery, the grid penetration of the systems
and the phase connection. The analysis shows that voltage unbalance problems can occur in case of same phase connection
of the systems. The results suggest that PV battery systems mitigate the problem for the two example grids
depending on the PV power and battery size. For grids with equally distributed phase connections of either PV or PV
battery systems, no violations of the voltage unbalance criterion are observed.
Si Micro-Rod Arrays and Surface Passivation for Radial Junction Application
Creators: name: Dong, G.
name: Liu, F.
name: Zhang, H.
name: Li, G.
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; 418-421
description: Ordered hexagonally arranged p-type silicon micro-rod arrays were fabricated by reactive ion etching
(RIE) of c-Si wafer using a non-close-packed (ncp) polystyrene (PS) spheres template as a mask. The average
reflectivity of Si micro-rod arrays is 8.8~10% in the wavelength range of 400~1100 nm for the rods with the length of
3~4 m. Intrinsic and n type a-Si:H thin film layers with the total thickness of about 15nm was deposited using
hotwire chemical deposition (HWCVD) to form the quasi-radial heterojunction structure. Fairly nice conformal
coverage was formed for both a-Si:H thin film and subsequent ITO front contact layers. The dark current-voltage (IV)
measurements indicate that proper atomic H treatment before the a-Si:H thin layer deposition is benefit to improve
the interface property of the heterojunction with micro-rod-array structure.
Regge behavior of gluon scattering amplitudes in N=4 SYM theory
Creators: name: Naculich, Stephen G.
name: Schnitzer, Howard J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is shown that the four-gluon scattering amplitude for N=4 supersymmetric Yang-Mills theory in the planar limit can be written, in both the weak- and strong-coupling limits, as a reggeized amplitude, with a parent trajectory and an infinite number of daughter trajectories. This result relies crucially on the fact that the leading IR-divergence and the finite log^2(s/t)-dependent piece of the amplitude are characterized by the same function for all values of the coupling, as conjectured by Bern, Dixon, and Smirnov, and proved by Alday and Maldacena in the strong-coupling limit. We use the Alday-Maldacena result to determine the strong-coupling Regge trajectory.
description: 7 pages; v2: minor corrections and clarifications, added references
Additional file 5 of Comparative genomics of Flavobacterium columnare unveils novel insights in virulence and antimicrobial resistance mechanisms
Creators: name: Declercq, Annelies Maria
name: Laurentijn Tilleman
name: Gansemans, Yannick
name: Chloë De Witte
name: Haesebrouck, Freddy
name: Nieuwerburgh, Filip Van
name: Smet, Annemieke
name: Decostere, Annemie
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 5. Single nucleotide variants (SNVs) in gyrase genes of Flavobacterium columnare isolates. This table shows the SNVs present in the gyrase genes of F. columnare isolates CDI-A and 04017018 when compared to gyrase genes of the reference genome ATCC 49512. However, as only isolate CDI-A displayed phenotypic antimicrobial resistance towards both first- and second-generation quinolones, the unique SNVs in the gyrase genes of the latter isolate are highlighted in grey background. No SNVs were encountered in DNA gyrase subunit B (EC 5.99.1.3). Average read quality score of the bases supporting a variant was higher than 35 (which is considered very good quality).
Network Evolution of Body Plans
Creators: name: Fujimoto, Koichi
name: Ishihara, Shuji
name: Kaneko, Kunihiko
Publisher: name: arXiv
Year: 2008
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences

description: Segmentation in arthropod embryogenesis represents a well-known example of body plan diversity. Striped patterns of gene expression that lead to the future body segments appear simultaneously or sequentially in long and short germ-band development, respectively. Regulatory genes relevant for stripe formation are evolutionarily conserved among arthropods, therefore the differences in the observed traits are thought to have originated from how the genes are wired. To reveal the basic differences in the network structure, we have numerically evolved hundreds of gene regulatory networks that produce striped patterns of gene expression. By analyzing the topologies of the generated networks, we show that the characteristics of stripe formation in long and short germ-band development are determined by Feed-Forward Loops (FFLs) and negative Feed-Back Loops (FBLs) respectively. Network architectures, gene expression patterns and knockout responses exhibited by the artificially evolved networks agree with those reported in the fly Drosophila melanogaster and the beetle Tribolium castaneum. For other arthropod species, principal network architectures that remain largely unknown are predicted.
description: 35 pages, 4 figures and 1 table
Global solutions for $H^s$-critical nonlinear biharmonic Schrödinger equation
Creators: name: Liu, Xuan
name: Zhang, Ting
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider the nonlinear biharmonic Schrödinger equation $$i\partial_tu+(Δ^2+μΔ)u+f(u)=0,\qquad (\text{BNLS})$$ in the critical Sobolev space $H^s(\R^N)$, where $N\ge1$, $μ=0$ or $-1$, $0
An approximation of the ideal scintillation detector line shape with a generalized gamma distribution
Creators: name: Smirnov, O. Ju.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: An approximation of the real line shape of a scintillation detector with a generalized gamma distribution is proposed. The approximation describes the ideal scintillation line shape better than the conventional normal distribution. Two parameters of the proposed function are uniquely defined by the first two moments of the detector response.
description: 26 pages, 8 figures, 2 tables
Industrial Inkjet Masking with High Reliability
Creators: name: Hermans, J.P.
name: Van Knippenberg, R.
name: Eijmberts, R.
name: Verburg, A.
name: Ketelaars, B.
name: Wijnstekers, T.
name: Sönmezler, E.
name: Knechten, K.
name: Veenstra, H.
name: Van De Haar, P.
Publisher: name: WIP
Year: 2012
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 2020-2024
description: Inkjet printing has always been considered a very promising technique for solar cell manufacturing, because of its non-contact deposition and other advantages like small feature size, constant high precision, high flexibility and effective material usage. Universities and research institutes have shown a wide variety of solar cell applications that improve the conversion efficiency at low cost by utilizing inkjet printing, however the transition from lab scale to mass production has been hampered by the availability of suitable high volume inkjet printing systems and skepticism on the reliability of inkjet printing. In 2011 Roth & Rau B.V. started the development of the PiXDRO JETx, a high volume industrial inkjet printing system; by combining self-diagnosing CrystalPoint print
heads from Océ Technologies B.V. with redundant printing strategies the reliability of inkjet is vastly improved. This paper explains the technology of self-diagnosing print heads and redundant printing strategies. The PiXDRO JETx is introduced and several solar cell applications utilizing these print heads and a masking ink are shown.
Reflections on implementing a constructivist approach in teaching magnetism : a case study of a fifth grade classroom
Creators: name: Gammon, Janice Maureen
Publisher: name: University of British Columbia
Year: 2010

description: Children have prior knowledge, or mini-theories about science topics presented at school before being formally taught that is constructed from their everyday experiences. Teachers generally do not take this knowledge into consideration in the planning of science units and are often confused about why their students fail to learn. Hewson (1983) suggests that students will experience conceptual change only if it is intelligible, plausible, and fruitful and that prior knowledge, which is often an alternate conception of a scientific idea, must be challenged or clarified. Schon (1984) claims that teachers need to reflect on their actions in order to understand their own as well as their students' "constructed worlds". He suggests that teachers, when they reflect, become their own researchers. This case study examines how I, a teacher/researcher, adopted a constructlvlst perspective towards teaching a unit in magnetism and how the students responded. Vignettes of selected Incidents tell the story of the difficulties that my students had learning some of the concepts of magnetism and how I reacted to the knowledge that they were having difficulty. The unit in magnetism was taught to my class of thirty-two students (10/11 year olds) at an elementary school in a community in British Columbia using a constructivlst teaching sequence developed by Driver (1986).The lessons in magnetism were video-taped and both the students and I kept a journal. To elicit students' ideas about magnetism a diagnostic test was given at the beginning of the unit. A continuing record of students' ideas was kept throughout the study and at the end a post diagnostic test was given to see which, if any, alternate conceptions persisted. It was found that teaching with a constructivist approach had its' difficulties. Reflecting, for myself and my students, took practice and taking students' ideas Into consideration, both in the planning and teaching stages, may have taken more time than many teachers have available. However, the knowledge that I gained about my students' beliefs, through the process of reflecting, was valuable in planning lessons that both challenged and clarified the students' alternate conceptions. Teachers are recommended to take their students' ideas into consideration in lesson planning and to use activities that will encourage conceptual change. However, teachers should consider the time factor and the difficulties in reflecting before using a constructivist approach in teaching science.
Additional file 6 of Gene network analysis reveals candidate genes related with the hair follicle development in sheep
Creators: name: He, Junmin
name: Zhao, Bingru
name: Huang, Xixia
name: Fu, Xuefeng
name: Liu, Guifen
name: Tian, Yuezhen
name: Wu, Cuiling
name: Mao, Jingyi
name: Liu, Jing
name: Gun, Shuangbao
name: Tian, Kechuan
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6: Fig. S3. Go and KEGG network diagram during the hair follicle morphogenesis. (a-f) represents the comparison group of G1-G6. Circle is represented gene, square is represented KEGG; triangle is represented GO term.
Strong Incompatability of Tribimaximal Mixing with Quark-Lepton Complementarity
Creators: name: Frampton, Paul H.
name: Matsuzaki, Shinya
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Although tribimaximal mixing (TBM) and quark-lepton complementarity (QLC) are both compatible with experimental data within one standard deviation ($ 1 σ$), the TBM and QLC assumptions are mutually exclusive by $56 σ$.
description: Reference added. Minor edit
"291" and cultural criticism : to see through closed eyes
Creators: name: Daniels, Marilyn Christine Johanne
Publisher: name: University of British Columbia
Year: 2010

description: Alfred Stieglitz and the members of '291' are most often remembered in the art historical literature for introducing modernism into America through the work of European artists and through the integration of current European formal experiments into the work of American artists. While some authors have referred to the fact that this modernism, as presented by 291, was intended to critique society, any analysis of that critique is conspicuously missing. Also absent is an analysis of what one contemporary critic referred to as the "queer symbolism lurking at the Post-Impressionist hypothesis." In this thesis the following questions are asked: what was 291's critique and why did they insist upon the expression of the 'irrational' states of the psyche — passion, intuition and imagination, in their art. By situating 291 within its particular set of contexts I attempt to explain what their position represented — to the members themselves and to their rivals.
Additional file 7 of Comparative genomics of Flavobacterium columnare unveils novel insights in virulence and antimicrobial resistance mechanisms
Creators: name: Declercq, Annelies Maria
name: Laurentijn Tilleman
name: Gansemans, Yannick
name: Chloë De Witte
name: Haesebrouck, Freddy
name: Nieuwerburgh, Filip Van
name: Smet, Annemieke
name: Decostere, Annemie
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 7. Characteristics of prophage regions in the four Flavobacterium columnare isolates. The prophage regions were identified in the genome of the reference isolate (ATCC49512) and the three newly assembled F. columnare isolates 04017018, CDI-A and JIP P11/91 via PHASTER. Prophage regions with scores less than 70 are incomplete.
Industrial Implementation of Efficiency Improvements in n-Type Solar Cells and Modules
Creators: name: Romijn, I.G.
name: Van Aken, B.B.
name: Anker, J.
name: Burgers, A.R.
name: Gutjahr, A.
name: Heurtault, B.
name: Koppes, M.
name: Kossen, E.
name: Lamers, M.
name: Saynova, D.S.
name: Tool, C.J.J.
name: Lang, F.
name: Li, G.
name: Wang, H.
name: Hu, Z.
name: Venema, P.R.
name: Vlooswijk, A.H.G.
Publisher: name: WIP
Year: 2012
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 533-537
description: This paper describes the recent developments on the n-Pasha solar cell. The n-Pasha cell is a bifacial
solar cell on n-type Cz material with homogeneous diffusions and printed metallization, and is produced at an
industrial scale by Yingli Solar. Until recently these cells typically reached efficiencies around 19% at both ECN and
Yingli. By reducing metal coverage and improving the quality of the front side metallization, tuning the back surface
field doping and improving the front and rear surface passivation, we have been able to increase the efficiency by
almost 1% absolute to 20%. Reducing the metal coverage has at the same time decreased the silver consumption per
cell, making the concept more cost effective. 72 n-Pasha cells with an average efficiency of 19.6% were used for a
monofacial module which resulted in a module power of 334 Watt-peak.
A discussion on maximum entropy production and information theory
Creators: name: Bruers, Stijn
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We will discuss the maximum entropy production (MaxEP) principle based on Jaynes' information theoretical arguments, as was done by Dewar (2003, 2005). With the help of a simple mathematical model of a non-equilibrium system, we will show how to derive minimum and maximum entropy production. Furthermore, the model will help us to clarify some confusing points and to see differences between some MaxEP studies in the literature.
description: 12 pages, no figures
Direct Tin-Coating of the Aluminum Rear Contact by Ultrasonic Soldering
Creators: name: Von Campe, H.
name: Huber, S.
name: Meyer, S.
name: Reiff, S.
name: Vietor, J.
Publisher: name: WIP
Year: 2012
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Manufacturing Issues and Processing

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 1150-1153
description: In conventional silicon solar cells series
connectors are soldered onto Ag-contacts fabricated from
sintered Ag-pastes. Continuously decreasing cell prices
require new techniques to save silver costs as for instance
to deposit busbars of solder directly onto the Al-back
contact. Ultrasonic soldering is an effective technique to
fabricate electrical tin busbars (here so-called tin pads)
directly onto aluminum surfaces. Moreover flux is not
needed for ultrasonic soldering. Onto these tin pads,
tinned Cu series connectors can be fixed by conventional
stringing techniques. In the high throughput process
developed, three tin-pads are deposited onto the Al rear
contact by ultrasonic soldering, whereas the back surfacefield
(BSF) is maintained over the full surface. This leads
to a significant increase of the efficiency due to full-area
back surface-passivation compared to Ag-pads depending
on the size of the pads.
The process was developed with the aid of a
laboratory equipment characterized by following
features:
• Continuous transport of solar cells
• No substrate heater
• Heating of the cell only by the hot solder deposited
onto the cell surface
• Sonotrode frequencies of 40 and 60 kHz
• Smoothening process of the tin busbar
With this equipment uniform solder busbars are produced
onto which conventional series connectors can be
soldered in conventional stringers. Therefore this process
is compatible to the production technology used today.
A pilot-production-equipment was built up and a
production process working for 2.400 cells per hour with
high yield has been demonstrated.
Additional file 1 of Lessons learned from inadequate implementation planning of team-based chronic disease management: implementation evaluation
Creators: name: Sibbald, Shannon L.
name: Asseldonk, Rachelle Van
name: Peiwen L. Cao
name: Benson Law
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1.
Fourier-Laplace transform of a variation of polarized complex Hodge structure, II
Creators: name: Sabbah, Claude
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 14D07, 32G20, 32S40

description: We show that the limit, by rescaling, of the `new supersymmetric index' attached to the Fourier-Laplace transform of a polarized variation of Hodge structure on a punctured affine line is equal to the spectral polynomial attached to the same object. We also extend the definition by Deligne of a Hodge filtration on the de Rham cohomology of a exponentially twisted polarized variation of complex Hodge structure and prove a E_1 degeneration property for it.
description: 51 pages, revised version, to appear in the proceedings volume of the conference `` New developments in Algebraic Geometry, Integrable Systems and Mirror symmetry", RIMS, Kyoto, Jan. 7-11, 2008
A Long-term Study of Ultraluminous X-ray Sources in NGC 891
Creators: name: Earley, Nicholas M.
name: Dwarkadas, Vikram V.
name: Cirillo, Victoria
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We perform empirical fits to the \emph{Chandra} and \emph{XMM-Newton} spectra of three ultraluminous X-ray sources (ULXs) in the edge-on spiral galaxy NGC 891, monitoring the region over a seventeen year time window. One of these sources has been visible since the early 1990s with \emph{ROSAT} and has been observed multiple times with \emph{Chandra} and \emph{XMM-Newton}. Another has been visible since 2011. We build upon prior analyses of these sources by analyzing all available data at all epochs. Where possible \emph{Chandra} data is used, since its superior spatial resolution allows for more effective isolation of the emission from each individual source, thus providing a better determination of their spectral properties. We also identify a new transient ULX, CXOU J022230.1+421937, which faded from view over the course of a two month period from Nov 2016 to Jan 2017. Modeling of each source at every epoch was conducted using six different models ranging from thermal bremsstrahlung to accretion disk models. Unfortunately, but as is common with many ULXs, no single model yielded a much better fit than the others. The two known sources had unabsorbed luminosities that remained fairly consistent over five or more years. Various possibilities for the new transient ULX are explored.
description: 23 pages, 4 tables, 5 figures. Accepted to Universe journal
Rapid spectral and timing variability of Be/X-ray binaries during type II outbursts
Creators: name: Reig, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have investigated the spectral and timing variability of four accreting X-ray pulsars with Be-type companions during major X-ray outbursts. Different spectral states were defined according to the value of the X-ray colours and flux. Transient Be/X-ray binaries exhibit two branches in their colour-colour and colour-intensity diagrams: the horizontal branch corresponds to a low-intensity state and shows the larger fractional rms, similar to the the island state in atolls and horizontal branch in Z sources; the diagonal branch corresponds to a high-intensity state, in which the source spends about 75% of the total duration of the outburst. Despite the complexity of the power spectra due to the peaks of the pulse period and its harmonics, the aperiodic variability of Be/X-ray binaries can be described with a relatively low number of Lorentzian components. Some of these components can be associated with the same type of noise as that seen in low-mass X-ray binaries, although the characteristic frequencies are about one order of magnitude lower. The pattern traced by V 0332+53 results in a Z shaped track, similar to the low-mass Z sources, without the flaring branch. In contrast, the horizontal branch in 4U 0115+63, KS 1947+300 and EXO 2030+375 corresponds to a low/soft state, not seen in other types of X-ray binaries. The noise at very low frequencies follows a power law in V 0332+53 (like in LMXB Z) and it is flat-topped in 4U 0115+63, KS 1947+300 and EXO 2030+375 (like in LMXB atoll). V 0332+53 shows a noise component coupled with the periodic variability that it is not seen in any of the other three sources.
Trends in Photovoltaic Applications - The Latest Survey Results on PV Markets and Policies from the IEA PVPS Programme
Creators: name: Watt, G.
name: Kaizuka, I.
name: Hüsser, P.
name: Bründlinger, R.
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; 4703-4706
description: IEA PVPS Task 1 is responsible for information exchange and communication on the technical, economic,
environmental and social aspects of photovoltaic power systems. A key deliverable of Task 1 is the annual Trends in
photovoltaic applications report. This report gives information on trends in PV power applications in the PVPS member and
non-member countries and is largely based on the information provided in the National Survey Reports which are produced
annually by IEA-PVPS countries (see explanatory notes for full list of countries). The surveys include information on
national market developments, public budgets, the industry value chain, prices, economic benefits, new initiatives, electricity
utility interests, standards and codes and RD&D / technology overviews.
Additional file 2 of Lessons learned from inadequate implementation planning of team-based chronic disease management: implementation evaluation
Creators: name: Sibbald, Shannon L.
name: Asseldonk, Rachelle Van
name: Peiwen L. Cao
name: Benson Law
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2.
Computability of simple games: A characterization and application to the core
Creators: name: Kumabe, Masahiro
name: Mihara, H. Reiju
Publisher: name: arXiv
Year: 2007
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Computational Complexity (cs.CC)
subject: Logic in Computer Science (cs.LO)
subject: Logic (math.LO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: F.4.1; F.1.1

description: The class of algorithmically computable simple games (i) includes the class of games that have finite carriers and (ii) is included in the class of games that have finite winning coalitions. This paper characterizes computable games, strengthens the earlier result that computable games violate anonymity, and gives examples showing that the above inclusions are strict. It also extends Nakamura's theorem about the nonemptyness of the core and shows that computable games have a finite Nakamura number, implying that the number of alternatives that the players can deal with rationally is restricted.
description: 35 pages; To appear in Journal of Mathematical Economics; Appendix added, Propositions, Remarks, etc. are renumbered
Using Microelectronic Know-How for Solar Cell Interconnection by Adhesive Bonding
Creators: name: Nieland, S.
name: Loebner, C.
name: Goerbing, K.-P.
name: Lawerenz, A.
Publisher: name: WIP
Year: 2012
Subjects: Components for PV Systems
PV Modules

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 3452-3455
description: On July 1st, 2006 the “Restriction of the Use of Certain Hazardous Substances (RoHS)” took effect which results
amongst others in a lead ban from nearly all electric and electronic products. The classical microelectronic packaging technologies made arrangements to meet these lead free demands by developing new soldering materials as well as developing alternative interconnection techniques such as adhesive bonding. At present, adhesive bonding is a common technology in the RFID business to connect coils of copper with transponder IC´s. So far, photovoltaic modules are excepted from the RoHS restriction. However, modules manufacturers are searching mass-suitable solutions for solar cells. Besides activities for lead-free soldering, adhesive bonding could be an
alternative interconnection technology even in the solar business. In this work, different approaches to adhesive bonding techniques adapted from the RFID “world” with isotropic
conductive as well as anisotropic conductive materials will be discussed. Additional interconnection methods with non-conductive materials will be introduced. In this case the ohmic contact will be achieved by direct contact of ribbon onto solar cell metallization. All three adhesive techniques will be compared by aspects of the PV industry. Requirements on the ribbons and on the metallization layout will be given in order to enhance the ohmic contact on the one hand and to reduce the material costs on the other hand.
Evaluation of Via Pastes for p- and n-Type Metal Wrap Through (MWT) Solar Cells
Creators: name: Lohmüller, E.
name: Thaidigsmann, B.
name: Werner, S.
name: Clement, F.
name: Wolf, A.
name: Biro, D.
name: Preu, R.
Publisher: name: WIP
Year: 2012
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 590-595
description: Via metallization is a main challenge in fabrication of metal wrap through (MWT) solar cells. Special
attention has to be given to the right choice of both metallization paste and suction process, in order to ensure a low
via-related series resistance. Five out of six via pastes investigated show average via resistances of less than 4 mΩ by
using an appropriate suction process. The contact formation of the via paste to the base is also of particular interest
since in more advanced MWT structures no rear emitter is present, as for example the high-performance MWT (HIPMWT)
approach on p-type silicon. The contact separation and minimum leakage current to the base has to be ensured
by the non-contacting via paste itself. Dark current-voltage characteristics in forward and reverse bias condition show
quite different behavior for each of the six via pastes tested on p- and n-type test structures. The obtained results are
very promising for a transfer of the HIP-MWT concept to n-type silicon. With completely screen-printed contacts, a
large-area p-type float-zone silicon HIP-MWT solar cell reaches a peak conversion efficiency of 20.3% and confirms
the high potential of the HIP-MWT structure for industrial fabrication of passivated MWT solar cells.
On higher real and stable ranks for CCR C*-algebras
Creators: name: Brown, Lawrence G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L05 (primary), 46M20 (secondary)

description: We calculate the real rank and stable rank of CCR algebras which either have only finite dimensional irreducible representations or have finite topological dimension. We show that either rank of A is determined in a good way by the ranks of an ideal I and the quotient A/I in four cases: When A is CCR; when I has only finite dimensional irreducible representations; when I is separable, of generalized continuous trace and finite topological dimension, and all irreducible representations of I are infinite dimensional; or when I is separable, stable, has an approximate identity consisting of projections, and has the corona factorization property. We also present a counterexample on higher ranks of M(A), A subhomogeneous, and a theorem of P. Green on generalized continuous trace algebras.
description: I intend to submit a revised version of this paper, reflecting comments received, in September and will replace it with the submitted version at that time
Additional file 1 of Long‐term monitoring of common spadefoot toad activity in a European steppe using barn owl pellets
Creators: name: Landler, Lukas
name: Stefke, Katharina
Publisher: name: figshare
Year: 2021
Subjects: subject: Statistics
subject: FOS: Mathematics

description: Additional file 1: Figure S1. There was still a remaining main month effect (lower activity in the hottest months) after precipitation effects were accounted for, however the effects were very weak (A). Toad abundance in the pellets slightly increased with mean temperature, also here effects were predicted to be very weak (B).
New Approaches for Component Recycling of Crystalline Solar Modules
Creators: name: Nieland, S.
name: Neuhaus, U.
name: Pfaff, T.
name: Rädlein, E.
Publisher: name: WIP
Year: 2012
Subjects: PV - a Major Electricity Source
Sustainability Aspects

description: 27th European Photovoltaic Solar Energy Conference and Exhibition; 4645-4648
description: Since the starting days of solar cell mass production the exposure of process waste such as broken solar cells and damaged PV modules has been an important issue. The possibility to reclaim the module components was demonstrated in many publications. Some companies offer the recycling of PV glass and resell it as broken fragments back to the glass industry. Despite the good quality of the glass fragments (low Fe contents, no hazardous and EVA/PVB contaminations) it is impossible to return the glass parts to a float zone facility, because of reservations of the float glass manufacturers. In this paper different approaches to re-extract the complete front glass of crystalline modules for re-use-applications will be discussed. Requirements on the “second hand” front glass will be given in order to re-use it for module manufacturing.
Another, not less important approach is focused on the re-extraction of silver from solar cells. The silver price has increased significantly over the last years proportional to the solar modules installed. Studies on waste quantities document approx. 0,2 % of total PV waste as manufacturing waste as well as 0,5 % of damaged during transport and installation. Different wet-chemical solutions will be introduced in order to digest the solar cell metallization in its pure components for further use.
Hypergeometric Structures in Feynman Integrals
Creators: name: Blümlein, J.
name: Saragnese, Marco
name: Schneider, C.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2021
Subjects: differential equations
Feynman graph
structure
mathematical methods
Taylor expansion
topology

description: Hypergeometric structures in single and multiscale Feynman integrals emerge in a wide class of topologies. Using integration-by-parts relations, associated master or scalar integrals have to be calculated. For this purpose it appears useful to devise an automated method which recognizes the respective (partial) differential equations related to the corresponding higher transcendental functions. We solve these equations through associated recursions of the expansion coefficient of the multivalued formal Taylor series. The expansion coefficients can be determined using either the package {\tt Sigma} in the case of linear difference equations or by applying heuristic methods in the case of partial linear difference equations. In the present context a new type of sums occurs, the Hurwitz harmonic sums, and generalized versions of them. The code {\tt HypSeries} transforming classes of differential equations into analytic series expansions is described. Also partial difference equations having rational solutions and rational function solutions of Pochhammer symbols are considered, for which the code {\tt solvePartialLDE} is designed. Generalized hypergeometric functions, Appell-,~Kampé de Fériet-, Horn-, Lauricella-Saran-, Srivasta-, and Exton--type functions are considered. We illustrate the algorithms by examples.
A survey of science fairs in school district 36 (Surrey)
Creators: name: Deeter, Burton Charles
Publisher: name: University of British Columbia
Year: 2010

description: The Surrey School District has sponsored a District elementary schools science fair (grades 4-7) for 21 years and voluntary participation has increased throughout this time. Despite this popularity, no studies have been conducted regarding the science fair. A survey of the elementary schools in the Surrey School District was conducted. The four areas identified for investigation were: (a) participation in school and district science fairs (b) organization of school science fairs (c) relationship between science instruction and science fair participation, (d) teacher participation in science fairs. Two questionnaires were developed. One was distributed to all elementary teachers in Surrey and the other was distributed to all elementary principals in Surrey. Response rates were 77% (teacher's questionnaire, n=346) and 88% (principal's questionnaire, n=59). Data analysis was in the form of frequencies of response expressed in percentages. Some crosstabulatons were calculated. The major findings of the study were: (a) most schools (95%) participate in the science fair, (b) most schools (85%) Include primary students in the science fair, (c) 4 827 Intermediate students (83%) completed a science fair project, (d) all schools encourage public viewing of their science fair, (e) teachers do not vary their science Instructional activities, lnstructonal materials, or their instructonal time, from the fall to the spring, (f) teachers provide extra instructional time and extra-curricular time to assist students with preparation of science fair projects, (g) teachers evaluate science fair product and not the process of completing a science fair project, (h) most teachers (75%) reported a willingness to attend science fair inservice, (i) teachers and principals have very similar attitudes toward science fair, (j) many teachers (n=89) and principals (n=39) made general comments about the science fair. The study recommends that the Surrey Elementary Schools Science Fair be continued and that further study be conducted regarding the type and amount of assistance that elementary students require to complete a science fair project satisfactorily.
Additional file 2 of The regional diversity of gut microbiome along the GI tract of male C57BL/6 mice
Creators: name: Enkhchimeg Lkhagva
name: Hea-Jong Chung
name: Hong, Jinny
name: Tang, Wai Hong Wilson
name: Lee, Sang-Il
name: Seong-Tshool Hong
name: Lee, Seungkoo
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Cancer
subject: Inorganic Chemistry
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Additional file 2: Table S1. The water contents in each location of the GI contents. Table S2. The pH measurements in each location of the GI contents. Table S3. Abundance of phyla level bacterial taxa in the GI sections and Feces (mean ± SEM, % of assigned 16S rRDA gene sequences) Taxa above 1% abundance are written in a bold format. Table S4. Abundance of class level bacterial taxa in the GI sections and Feces (mean ± SEM, % of assigned 16S rRDA gene sequences) Taxa above 1% abundance are written in a bold format. Table S5. Abundance of order level bacterial taxa in the GI sections and Feces (mean ± SEM, % of assigned 16S rRDA gene sequences) Taxa above 1% abundance are written in a bold format. Table S6. Abundance of family level bacterial taxa in the GI sections and Feces (mean ± SEM, % of assigned 16S rRDA gene sequences) Taxa above 1% abundance are written in a bold format. Table S7. Abundance of genus level bacterial taxa in the GI sections and Feces (mean ± SEM, % of assigned 16S rRDA gene sequences) Taxa above 1% abundance are written in a bold format. Table S8. Overview of metagenomics sequencing results for each sample. Numerical numbers 1 ~ 3 indicate mouse numbers used in this experiment.
Robust noncoplanar magnetism in band filling-tuned (Nd$_{1-x}$Ca$_x$)$_2$Mo$_2$O$_7$
Creators: name: Hirschberger, Max
name: Kaneko, Yoshio
name: Spitz, Leonie
name: Nakajima, Taro
name: Taguchi, Yasujiro
name: Tokura, Yoshinori
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the metallic pyrochlore Nd$_2$Mo$_2$O$_7$, the conducting Molybdenum sublattice adopts canted, yet nearly collinear ferromagnetic order with nonzero scalar spin chirality. The chemical potential may be controlled by replacing Nd$^{3+}$ with Ca$^{2+}$, while introducing only minimal additional disorder to the conducting states. Here, we demonstrate the stability of the canted ferromagnetic state, including the tilting angle of Molybdenum spins, in (Nd$_{1-x}$Ca$_{x}$)$_2$Mo$_2$O$_7$ (NCMO) with $x\le 0.15$ using magnetic susceptibility measurements. Mo-Mo and Mo-Nd magnetic couplings both change sign above $x=0.22$, where the canted ferromagnetic state gives way to a spin-glass metallic region. Contributions to the Curie-Weiss law from two magnetic sublattices are separated systematically.
description: 22 pages, 9 figures