cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Towards Accuracy and Scalability: Combining Isogeometric Analysis with Deflation to Obtain Scalable Convergence for the Helmholtz Equation
Creators: name: Dwarka, Vandana
name: Tielen, Roel
name: Möller, Matthias
name: Vuik, Kees
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Finding fast yet accurate numerical solutions to the Helmholtz equation remains a challenging task. The pollution error (i.e. the discrepancy between the numerical and analytical wave number k) requires the mesh resolution to be kept fine enough to obtain accurate solutions. A recent study showed that the use of Isogeometric Analysis (IgA) for the spatial discretization significantly reduces the pollution error. However, solving the resulting linear systems by means of a direct solver remains computationally expensive when large wave numbers or multiple dimensions are considered. An alternative lies in the use of (preconditioned) Krylov subspace methods. Recently, the use of the exact Complex Shifted Laplacian Preconditioner (CSLP) with a small complex shift has shown to lead to wave number independent convergence while obtaining more accurate numerical solutions using IgA. In this paper, we propose the use of deflation techniques combined with an approximated inverse of the CSLP using a geometric multigrid method. Numerical results obtained for both one- and two-dimensional model problems, including constant and non-constant wave numbers, show scalable convergence with respect to the wave number and approximation order p of the spatial discretization. Furthermore, when kh is kept constant, the proposed approach leads to a significant reduction of the computational time compared to the use of the exact inverse of the CSLP with a small shift.
Quotients of fake projective planes
Creators: name: Keum, JongHae
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14J29; 14J27

description: Recently, Prasad and Yeung classified all possible fundamental groups of fake projective planes. According to their result, many fake projective planes admit a nontrivial group of automorphisms, and in that case it is isomorphic to $\bbZ/3\bbZ$, $\bbZ/7\bbZ$, $7:3$, or $(\bbZ/3\bbZ)^2$, where $7:3$ is the unique non-abelian group of order 21. Let $G$ be a group of automorphisms of a fake projective plane $X$. In this paper we classify all possible structures of the quotient surface $X/G$ and its minimal resolution.
description: 16 pages, with minor change of the exposition
Age‑related changes in cuticular hydrocarbon bouquet and same‑sex sexual behavior of mason bee males (Osmia cornuta and O. bicornis)
Creators: name: Seidelmann, Karsten
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2023
Subjects: subject: 570

description: Finding a mate is the central task in the lives of many male insects. In many solitary bees, sexual competition between males is high due to monandry and a pronounced male-biased sex ratio. Males searching for females will inspect and mount any object of suitable size and habitus. Species, sex, and reproductive status are encoded in the bee’s bouquet of cuticular hydrocarbons (CHCs) and can only be identified at a short distance from the object encountered. In two species of mason bees, this CHC-based system for recognizing newly emerged, virgin females is not error-free. Newly emerged individuals of both sexes carry similar CHC bouquets, facilitating the confusion of newly emerged males with newly emerged, virgin females. Misidentification leads to same-sex sexual behavior by males seeking a mate. However, individuals of both sexes modify their CHC bouquet sex-specifically within a few days. The changes in the bouquet prevent further sexual harassment. In addition, within 3 days of emergence, males begin to release species-specific carboxylic acid esters, which may act as courtship-inhibiting pheromones to extend the range of their sex-specific scent tag. Due to the pronounced protandry of both species, SSB is restricted to the early flight season, when females are not yet present, and imposes no apparent cost on the two males involved.
TO THE QUESTION ON THE STUDY ON ASSISTANCE TO THE SYNERGETIC DEVELOPMENT OF NORTHEAST CHINA AND THE RUSSIAN FAR EAST UNDER THE CONDITIONS OF COVID-19
Creators: name: Dapeng, Zhu
Publisher: name: Современная научная мысль
Year: 2021
Subjects: КИТАЙСКО-РОССИЙСКОЕ СОТРУДНИЧЕСТВО
ТОРГОВЫЕ ОТНОШЕНИЯ
МОДЕРНИЗАЦИЯ
КОРОНАВИРУС
СЕВЕРО-ВОСТОЧНЫЙ КИТАЙ
ДАЛЬНИЙ ВОСТОК РОССИИ
СИНЕРГЕТИЧЕСКОЕ РАЗВИТИЕ
SINO-RUSSIAN COOPERATION
TRADE RELATIONS
MODERNIZATION
COVID-19
NORTHEAST CHINA
THE RUSSIAN FAR EAST
SYNERGETIC DEVELOPMENT

description: In the article considers the problems of activating and effectively using the reserves of cooperation between Northeast China and the Russian Far East in the difficult conditions of the Covid-19 pandemic. It is shown that the pandemic has created an objectively unfavorable development situation for the studied regions, which have excellent geographical advantages, rich resources, strong political mutual trust and a consonant philosophy of development. The situation is complicate by the Covid-19 outbreak has hit the global economy hard, creating a range of problems such as imbalances in global trade patterns, disrupted production chains and de-globalization. It is noted that in this situation, China and Russia must work together to pave the way for synergistic development and create a new mechanism for regional synergetic development. In addition, they should develop logistics and transport capabilities in the region, jointly stimulate the construction of Sino-Russian border ports, and strengthen cooperation in high-tech areas in order to obtain mutual benefits and mutually beneficial interaction. In this way, the economies of China and Russia can be raised to a higher level.
Trench warfare on the tax fields : fiscal sociology and Japan’s centralized tax state
Creators: name: Dewit, Andrew Pieter James
Publisher: name: University of British Columbia
Year: 2009

description: According to the World Bank, over 80 countries currently plan some form of fiscal decentralization. This group includes Japan, a highly centralized tax state, which in 1995 put in place a law and associated high-profile institutions to promote fiscal and administrative decentralization. But the process in Japan has quickly become bogged down. This dissertation asks why there are hurdles confronting fiscal decentralization in Japan. My research uses the fiscal sociology approach and highlights bureaucratic interests in Japan's intergovernmental tax regime, one that is especially interesting in comparison with other advanced industrial countries. Fully 70 percent of all government spending in Japan is done by subnational levels of government, and 51 percent of the central state's current operating expenditures are transfers downward that serve to support that high rate of local spending. And though Japan is a centralized state, over a third of its taxation is collected locallly. In consequence, Japan is quite anomalous when set alongside a representrative sample of federal and unitary states. No other country among the nine OECD nations used, for comparative purposes, in this dissertation combines such high fiscal transfers with heavy levels of subnational spending and taxation. And no other country gives close control over a large terrain of subnational taxation to a central-state agency (the Ministry of Home Affairs). The ministry's vast bureaucratic turf brings it into conflict with the Ministry of Finance, as both seek to maintain or expand their fiscal jurisdiction. They are thus not interested in fiscal decentralization in large part because they are busy fighting "trench wars" with each other on these tax fields. This dissertation hence undertakes a detailed analysis of intergovernmental fiscal history in Japan, focusing in particular on the Ministry of Home Affairs' ambiguous role in the Japanese state. The case studies of inter-bureaucratic fiscal politics include the Local Allocation Tax (a large general subsidy) as well as an array of taxes on the fields of income, assets and consumption.
A Review of the Analytical Hierarchy Process (AHP): An Approach to Water Resource Management in Thailand
Creators: name: Jirattinart Thungngern
name: Saowanee Wijitkosum
name: Thavivongse Sriburi
name: Chaiyuth Sukhsri
Publisher: name: Environmental Research Institute Chulalongkorn University Press
Year: 2015
Subjects: Multi-criteria decision analysis (MCDA), analytical hierarchy process (AHP), water resources management

description: 3, 37, Applied Environmental Research
Remarks on generalized Ramanujan sums and even functions
Creators: name: Tóth, László
Publisher: name: arXiv
Year: 2006
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11A25, 11L03, 11N37

description: We prove a simple formula for the main value of $r$-even functions and give applications of it. Considering the generalized Ramanujan sums $c_A(n,r)$ involving regular systems $A$ of divisors we show that it is not possible to develop a Fourier theory with respect to $c_A(n,r)$, like in the the usual case of classical Ramanujan sums $c(n,r)$.
Couples’ interpersonal behavior and depressive symptoms at the trait and state-level
Creators: name: Sels, Laura
name: Verhees, Martine
name: Kalkan, Rana Begum
name: Kuppens, Peter
Publisher: name: OSF Registries
Year: 2024
Subjects: subject: Clinical Psychology
subject: Personality and Social Contexts
subject: Life Sciences
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Research in depressive symptomatology has mainly focused on intrapersonal processes such as cognitive biases, emotion regulation difficulties or maladaptive beliefs of the individual. However, prominent theories of depression, from cognitive (Beck, 1983) to psychodynamic (Blatt, 2004) and to interpersonal perspectives (Coyne, 1976), highlight the importance of interpersonal functioning in explaining depressive symptomatology (for similar perspectives see e.g., Schilbach, 2016). At this point, Contemporary Integrative Interpersonal Theory (CIIT) offers a framework to study psychopathology as reflection of issues in interpersonal functioning, specifically along two dimensions: agency and communion. Yet, depressive symptoms have not been comprehensively investigated in terms of these two dimensions. In this study, to fill this gap, we aim to elucidate how agentic and communal behavior of the individual and their romantic partner (as perceived by the individual) relate to depressive symptoms at both the trait and state-level.
Ethno-religious discrimination and adjustment among Muslim adolescents : the promotive and protective roles of ethnic and religious identification
Creators: name: Wenzing, Julia Marie Christina
name: Schachner, Maja
name: Gharaei, Nadya
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 150

description: Due to rising Islamophobia in Europe today, Muslim ethnic minority adolescents are at great risk of experiencing identity-based harassment at school. We extend previous research on ethnic discrimination by focusing on religious discrimination of Muslim adolescents and its effect on their psychological (i.e., depressive symptoms and self-esteem) and behavioural adjustment (i.e., disruptive behaviour at school). Further, we consider Muslim adolescents’ ethnic and religious identification as two factors that may promote adolescents’ adjustment and protect them from the negative consequences of discrimination. We used data from N = 105 Muslim ethnic minority adolescents (Mage = 13.30, SD = 0.75, 45% female). Factor analysis revealed that adolescents did not differentiate between ethnic and religious discrimination. Results show that higher perceived ethno-religious discrimination (PERD) was related to more depressive symptoms. While higher ethnic identification was associated with greater self-esteem, higher religious identification was related to fewer depressive symptoms. Contrary to our expectation, Muslim adolescents who were highly identified with their ethnic group reported more depressive symptoms when experiencing more PERD. Their self-esteem was negatively affected by higher PERD when possessing high religious identification, while for low religious identification a positive effect of higher PERD on self-esteem emerged. Results highlight the importance of developing evidence-based intervention programmes for schools to tackle identity-based harassment.
The Simons Observatory: Modeling Optical Systematics in the Large Aperture Telescope
Creators: name: Gudmundsson, Jon E.
name: Gallardo, Patricio A.
name: Puddu, Roberto
name: Dicker, Simon R.
name: Adler, Alexandre E.
name: Ali, Aamir M.
name: Bazarko, Andrew
name: Chesmore, Grace E.
name: Coppi, Gabriele
name: Cothard, Nicholas F.
name: Dachlythra, Nadia
name: Devlin, Mark
name: Dünner, Rolando
name: Fabbian, Giulio
name: Galitzki, Nicholas
name: Golec, Joseph E.
name: Ho, Shuay-Pwu Patty
name: Hargrave, Peter C.
name: Kofman, Anna M.
name: Lee, Adrian T.
name: Limon, Michele
name: Matsuda, Frederick T.
name: Mauskopf, Philip D.
name: Moodley, Kavilan
name: Nati, Federico
name: Niemack, Michael D.
name: Orlowski-Scherer, John
name: Page, Lyman A.
name: Partridge, Bruce
name: Puglisi, Giuseppe
name: Reichardt, Christian L.
name: Sierra, Carlos E.
name: Simon, Sara M.
name: Teply, Grant P.
name: Tucker, Carole
name: Wollack, Edward J.
name: Xu, Zhilei
name: Zhu, Ningfeng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present geometrical and physical optics simulation results for the Simons Observatory Large Aperture Telescope. This work was developed as part of the general design process for the telescope; allowing us to evaluate the impact of various design choices on performance metrics and potential systematic effects. The primary goal of the simulations was to evaluate the final design of the reflectors and the cold optics which are now being built. We describe non-sequential ray tracing used to inform the design of the cold optics, including absorbers internal to each optics tube. We discuss ray tracing simulations of the telescope structure that allow us to determine geometries that minimize detector loading and mitigate spurious near-field effects that have not been resolved by the internal baffling. We also describe physical optics simulations, performed over a range of frequencies and field locations, that produce estimates of monochromatic far field beam patterns which in turn are used to gauge general optical performance. Finally, we describe simulations that shed light on beam sidelobes from panel gap diffraction.
description: 15 pages, 13 figures
Generalization of a theorem of Gonchar
Creators: name: Pflug, Peter
name: Nguyen, Viet-Anh
Publisher: name: arXiv
Year: 2006
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32D15, 32D10

description: Let $X, Y$ be two complex manifolds, let $D\subset X,$ $ G\subset Y$ be two nonempty open sets, let $A$ (resp. $B$) be an open subset of $\partial D$ (resp. $\partial G$), and let $W$ be the 2-fold cross $((D\cup A)\times B)\cup (A\times(B\cup G)).$ Under a geometric condition on the boundary sets $A$ and $B,$ we show that every function locally bounded, separately continuous on $W,$ continuous on $A\times B,$ and separately holomorphic on $(A\times G) \cup (D\times B)$ "extends" to a function continuous on a "domain of holomorphy" $\hat{W}$ and holomorphic on the interior of $\hat{W}.$
description: 14 pages, to appear in Arkiv for Matematik
High realistic aspirations - do normative pressures overthrow rational calculations? : applying the model of frame selection to the educational aspirations of immigrant and majority students in Germany
Creators: name: Schmaus, Miriam
name: Olczyk, Melanie
name: Neumeyer, Sebastian
name: Will, Gisela
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 370

description: Educational aspirations are of interest to scholars in several disciplines. They can affect multiple aspects of educational success and have been shown to differ between major social groups. Explanations for educational aspirations typically link to two main models of aspiration formation: the Wisconsin model (WM) and rational choice theory (RCT). Whereas the WM highlights significant others’ educational norms, RCT cites cost-benefit calculations to explain how aspirations are formed. As it is still unclear how the two approaches interrelate, we apply a third model, namely the model of frame selection (MFS), which allows the integration of both WM and RCT arguments. In short, it suggests that the importance of others’ educational norms moderates the relevance of own cost-benefit calculations. We assume that considering this interrelation is fruitful when explaining aspirations in general, and specifically when explaining immigrant students’ aspirations, who often perceive high educational obligations by their parents. Using data from the German National Educational Panel Study (NEPS), we test prognoses derived from the three theoretical models for their relevance when explaining the aspirations of Turkish and German students. Results indicate that the processes suggested by both WM and RCT shape aspirations. Consistent with the MFS, these processes also interrelate in that parents’ educational norms reduce the relevance of students’ own cost-benefit calculations. This interrelation does not only apply to Turkish students but holds for all students in the sample.
ตัวแบบพยากรณ์ปริมาณการจำหน่ายเบียร์ในประเทศไทย
Creators: name: วรางคณา กีรติวิบูลย์
Publisher: name: กองบริหารการวิจัย มหาวิทยาลัยธรรมศาสตร์
Year: 2558
Subjects: เบียร์, บอกซ์-เจนกินส์, การปรับเรียบด้วยเส้นโค้งเลขชี้กาลัง, การพยากรณ์รวม, เปอร์เซ็นต์ความคลาดเคลื่อนสัมบูรณ์เฉลี่ย, รากที่สองของความคลาดเคลื่อนกาลังสองเฉลี่ย

description: 5, 23, วารสารวิทยาศาสตร์และเทคโนโลยี
Structural, electronic and magnetic properties of Mn-doped GaAs(110) surface
Creators: name: Stroppa, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: First principles total-energy pseudopotential calculations have been performed to investigate STM images of the (110) cross-sectional surface of Mn-doped GaAs. We have considered configurations with Mn in interstitial positions in the uppermost surface layers with Mn surrounded by As (Int$_{As}$) or Ga (Int$_{Ga}$) atoms. The introduction of Mn on the GaAs(110) surface results in a strong local distortions in the underlying crystal lattice, with variations of interatomic distances up to 3% with respect to unrelaxed ones. In both cases, the surface electronic structure is half-metallic (or \emph{nearly} half metallic) and it strongly depends on the local Mn environment. The nearby Mn atoms show an induced spin-polarization resulting in a ferromagnetic Mn--As and antiferromagnetic Mn--Ga configuration. The simulation of the STM images show very different pattern of the imaged Mn atom, suggesting that they could be easily discerned by STM analysis.
description: Typos corrected
Solidarity among strangers during natural disasters : how economic insights may improve our understanding of virtues
Creators: name: Reese, Alexander
name: Pies, Ingo
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 170

description: The renaissance of Aristotelian virtue ethics has produced an extensive philosophical literature that criticizes markets for a lack of virtues. Drawing on Michael Sandel’s virtue-ethical critique of price gouging during natural disasters, we (1) identify and clarify serious misunderstandings in recurring price-gouging debates between virtue-ethical critics and economists. Subsequently, (2) we respond to Sandel’s call for interdisciplinary dialogue. However, instead of solely calling on economics to embrace insights from virtue ethics, we prefer a two-sided version of interdisciplinary dialogue and argue that virtue ethics should embrace economic insights. In particular, we argue that if virtue ethics is to preserve its social relevance under modern conditions, it should re-conceptualize its notion of virtue and re-evaluate the self-interested but effective—and in this sense solidary—help among strangers via markets as virtuous rather than devaluate it as greed, that is, as vicious price gouging.
The Fate of Articulation Points and Bredges in Percolation
Creators: name: Bonneau, Haggai
name: Tishby, Ido
name: Biham, Ofer
name: Katzav, Eytan
name: Kuehn, Reimer
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the statistics of articulation points and bredges (bridge-edges) in complex networks in which bonds are randomly removed in a percolation process. Articulation points are nodes in a network which, if removed, would split the network component on which they are located into two or more separate components, while bredges are edges whose removal would split the network component on which they are located into two separate components. Both articulation points and bredges play an important role in processes of network dismantling and it is therefore useful to know the evolution of the probability of nodes or edges to be articulation points and bredges, respectively, when a fraction of edges is randomly removed from the network in a percolation process. Due to the heterogeneity of the network, the probability of a node to be an articulation point, or the probability of an edge to be a bredge will not be homogeneous across the network. We therefore analyze full distributions of articulation point probabilities as well as bredge probabilities, using a message-passing or cavity approach to the problem, as well as a deconvolution of these distributions according to degrees of the node or the degrees of both adjacent nodes in the case of bredges. Our methods allow us to obtain these distributions both for large single instances of networks as well as for ensembles of networks in the configuration model class in the thermodynamic limit of infinite system size. We also derive closed form expressions for the large mean degree limit of Erdős-Rényi networks.
description: 15 pages, 10 multipart figures
Rough translation of file 026_A (collection LA 256)
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio files VP-271214-01, VP-271214-02, and VP-271214-03: Rough translation (in approximately 30 second segments) of file 026_A (tape 026, side A) from LA 256 (collection of recordings given to the Berkeley Language Center by Verdena), from the beginning of the file to 3:45 (VP-271214-01), from 3:45 to 4:28 (VP-271214-02), and from 4:28 to 29:57 (VP-271214-03); no transcription in this session, translation only. Segments were recorded separately then consolidated into three files after the session. Recorded directly on a MacBook Pro laptop computer, affecting audio quality. Due to re-numbering, tape 026_A has been assigned to the CLA item number LA256.026, audio file LA256.026A.
Where the grass is greener : large-scale phenological patterns and their explanatory potential for the distribution of paleolithic hunter-gatherers in Europe
Creators: name: Maier, Andreas
name: Tharandt, Louise
name: Linsel, Florian
name: Krakov, Vladislav
name: Ludwig, Patrick
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 930.1

description: A unique property of the Paleolithic record is the possibility to observe human societies in large areas and over long periods of time. At these large spatial and temporal scales, a number of interesting phenomena can be observed, such as dynamics in the distribution of populations in relation to equally large-scale environmental patterns. In this paper, we focus on phenological patterns of vegetation and discuss their explanatory potential for differences in site densities in different periods and parts of Europe. In particular, we present a case-transferable approach to diachronically estimate the timing of the vegetation period and resulting phenological gradients. We discuss results for two complementary case studies. First, we look at the Aurignacian in Western and Central Europe, a period of dynamic population dispersal in a topographically heterogeneous region. Second, we focus on the Middle and Late Upper Paleolithic in the East European Plain, a period after the arrival of anatomically modern humans in a topographically rather uniform area. We visualize phenological trajectories and boundaries otherwise invisible in the archaeological record with certain explanatory potential for the observed archaeological patterns. Importantly, we do not intend to reconstruct specific plant communities or dispersal routes of animals or humans. Rather, we aim at highlighting gradients which in themselves and on small temporal scales might be comparatively weak, but over the course of millennia may potentially influence the distribution of animal biomass and human populations by biasing the aggregate of at times opposing actions of individuals towards particular directions.
Quadrefringence of optical vortices in a uniaxial crystal
Creators: name: Fadeyeva, T.
name: Rubass, A.
name: Egorov, Yu.
name: Volyar, A.
name: Swartzlander, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The splitting of a single optical vortex into four separate ones in a singular beam is theoretically and experimentally described for the propagation of light obliquely through a uniaxial crystal. Also we found the condition under which the new-born vortices in each four individual beams propagate independently without dislocation reactions and have different locations in all beams for any crystal lengths.
description: 10 pages, 8 figures
"These Somalis are not Somalis:" Cup of Art Italian Coffeehouse, authentic identities, and belonging in Hargeisa, Somaliland
Creators: name: Serunkuma, Yusuf
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 305

description: Through ethnography of a performatively Western-inspired coffeehouse in a "traditionally" identifying town of Hargeisa in Somaliland, Serunkuma uses Cup of Art Italian Coffeehouse to debate the political-conceptual dilemma - and potential dangers - of the renewed longing for cultural authenticity and "total revolution" in post-colonial Africa. While acknowledging the failure of the dreams that animated the anti-colonial struggle, manifest in the collapse in public service delivery, governance challenges, and civil war, Serunkuma contends that taking this to be the product of the “legacy of late colonialism,” and thus seeking to protect supposedly "authentic" African traditions and religious practices from Western corruption is itself a poisoned chalice. Using Cup of Art, Serunkuma urges humility toward the permanence of a colonial modernity and constant awareness of the new "problem space", in which actors exercise their agency.
Faint Quasars Live in the Same Number Density Environments as Lyman Break Galaxies at z ~ 4
Creators: name: Uchiyama, Hisakazu
name: Akiyama, Masayuki
name: Toshikawa, Jun
name: Kashikawa, Nobunari
name: Overzier, Roderik
name: Nagao, Tohru
name: Ichikawa, Kohei
name: Marinello, Murilo
name: Imanishi, Masatoshi
name: Tanaka, Masayuki
name: Matsuoka, Yoshiki
name: Komiyama, Yutaka
name: Ishikawa, Shogo
name: Onoue, Masafusa
name: Kubo, Mariko
name: Harikane, Yuichi
name: Ito, Kei
name: Namiki, Shigeru
name: Liang, Yongming
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Characterizing high-z quasar environments is key to understanding the co-evolution of quasars and the surrounding galaxies. To restrict their global picture, we statistically examine the g-dropout galaxy overdensity distribution around 570 faint quasar candidates at z ~ 4, based on the Hyper Suprime-Cam Subaru Strategic Program survey. We compare the overdensity significances of g-dropout galaxies around the quasars with those around g-dropout galaxies, and find no significant difference between their distributions. A total of 4 (22) out of the 570 faint quasars, 0.7_{-0.4}^{+0.4} (3.9_{-0.8}^{+0.8}) %, are found to be associated with the > 4 sigma overdense regions within an angular separation of 1.8 (3.0) arcmin, which is the typical size of protoclusters at this epoch. This is similar to the fraction of g-dropout galaxies associated with the > 4 sigma overdense regions. This result is consistent with our previous work that 1.3_{-0.9}^{+0.9} % and 2.0_{-1.1}^{+1.1} % of luminous quasars detected in the Sloan Digital Sky Survey exist in the > 4 sigma overdense regions within 1.8 and 3.0 arcmin separations, respectively. Therefore, we suggest that the galaxy number densities around quasars are independent of their luminosity, and most quasars do not preferentially appear in the richest protocluster regions at z ~ 4. The lack of an apparent positive correlation between the quasars and the protoclusters implies that: i) the gas-rich major merger rate is relatively low in the protocluster regions, ii) most high-z quasars may appear through secular processes, or iii) some dust-obscured quasars exist in the protocluster regions.
description: 12 pages, 4 figures
Ab initio potential energy surfaces, bound states and electronic spectrum of the Ar-SH complex
Creators: name: Doyle, Richard J.
name: Hirst, David M.
name: Hutson, Jeremy M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: New ab initio potential energy surfaces for the doublet pi ground electronic state of the Ar-SH complex are presented, calculated at the RCCSD(T)/aug-cc-pV5Z level. Weakly bound rotation-vibration levels are calculated using coupled-channel methods that properly account for the coupling between the two electronic states. The resulting wavefunctions are analysed and a new adiabatic approximation including spin-orbit coupling is proposed. The ground-state wavefunctions are combined with those obtained for the excited doublet sigma + state [Phys. Chem. Chem. Phys. 6, 5463 (2004)] to produce transition dipole moments. Modelling the transition intensities as a combination of these dipole moments and calculated lifetime values [J. Chem. Phys. 109, 170 (1998)] leads to a good representation of the experimental fluorescence excitation spectrum [J. Chem. Phys. 98, 4301 (1993)].
description: 11 pages, 7 figures
Hierarchical Decentralized Reference Governor using Dynamic Constraint Tightening for Constrained Cascade Systems
Creators: name: Aghaei, Shahram
name: Daeichian, Abolghasem
name: Puig, Vicenç
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: This paper proposes a hierarchical decentralized reference governor for constrained cascade systems. The reference governor (RG) approach is reformulated in terms of receding horizon strategy such that a locally receding horizon optimization is obtained for each subsystem with a pre-established prediction horizon. The algorithm guarantees that not only the nominal overall closed-loop system without any constraint is recoverable but also the state and control constraints are satisfied in transient conditions. Also, considering unfeasible reference signals, the output of any subsystem goes locally to the nearest feasible value. The proposed dynamic constraint tightening strategy uses a receding horizon to reduce the conservatism of conventional robust RGs. Moreover, a decentralized implementation of the algorithms used to compute tightened constraints and output admissible sets is introduced that allow to deal with large scale systems. Furthermore, a set of dynamic constraints are presented to preserve recursive feasibility of distributed optimization problem. Feasibility, stability, convergence, and robust constraint satisfaction of the proposed algorithm are also demonstrated. The proposed approach is verified by simulating a system composed of three cascade jacketed continuous stirred tank reactors.
description: 25 pages, 7 figures
Results from a search for the $0νββ$-decay of $^{130}Te$
Creators: name: Arnaboldi, C.
name: Artusa, D. R.
name: Avignone, F. T.
name: Balata, M.
name: Bandac, I.
name: Barucci, M.
name: Beeman, J. W.
name: Bellini, F.
name: Brofferio, C.
name: Bucci, C.
name: Capelli, S.
name: Carbone, L.
name: Cebrian, S.
name: Clemenza, M.
name: Cremonesi, O.
name: Creswick, R. J.
name: de Waard, A.
name: Di Domizio, S.
name: Dolinski, M. J.
name: Farach, H. A.
name: Fiorini, E.
name: Frossati, G.
name: Giachero, A.
name: Giuliani, A.
name: Gorla, P.
name: Guardincerri, E.
name: Gutierrez, T. D.
name: Haller, E. E.
name: Maruyama, R. H.
name: McDonald, R. J.
name: Nisi, S.
name: Nones, C.
name: Norman, E. B.
name: Nucciotti, A.
name: Olivieri, E.
name: Pallavicini, M.
name: Palmieri, E.
name: Pasca, E.
name: Pavan, M.
name: Pedretti, M.
name: Pessina, G.
name: Pirro, S.
name: Previtali, E.
name: Risegari, L.
name: Rosenfeld, C.
name: Sangiorgio, S.
name: Sisti, M.
name: Smith, A. R.
name: Torres, L.
name: Ventura, G.
name: Vignati, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A detailed description of the CUORICINO $^{130}Te$ neutrinoless double-beta ($\nbb$) decay experiment is given and recent results are reported. CUORICINO is an array of 62 tellurium oxide ($TeO_{2}$) bolometers with an active mass of 40.7 kg. It is cooled to $\sim 8-10$ mK by a dilution refrigerator shielded from environmental radioactivity and energetic neutrons. It is running in the Laboratori Nazionali del Gran Sasso (LNGS) in Assergi, Italy. These data represent an exposure of $11.83\textrm{kg}...\textrm{y}$ or 91 mole-years of $^{130}Te$. No evidence for $\nbb$-decay was observed and a limit of $T^{0ν}_{1/2}(^{130}Te)\geq3.0\times10^{24}$ y (90% C.L.) is set. This corresponds to an upper limit on the effective mass, $< m_ν>$, between 0.19 and 0.68 eV when analyzed with the many published nuclear structure calculations. In the context of these nuclear models, the values fall within the range corresponding to the claim of evidence of $\nbb$-decay by H.V. Klapdor-Kleingrothaus, \textit{et al.} The experiment continues to acquire data.
description: 30 pages, 7 figures
The maximal order of a class of multiplicative arithmetical functions
Creators: name: Tóth, László
name: Wirsing, Eduard
Publisher: name: arXiv
Year: 2006
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11A25, 11N37

description: We prove simple theorems concerning the maximal order of a large class of multiplicative functions. As an application, we determine the maximal orders of certain functions of the type $σ_A(n)= \sum_{d\in A(n)} d$, where A(n) is a subset of the set of all positive divisors of $n$, including the divisor-sum function $σ(n)$ and its unitary and exponential analogues. We also give the minimal order of a new class of Euler-type functions, including the Euler-function $ϕ(n)$ and its unitary analogue.
A new genus and species of toad from Mount Kenya illuminates East African montane biogeography
Creators: name: Liedtke, H. Christoph
name: Malonza, Patrick K.
name: Wasonga, Domnick V.
name: Müller, Hendrik
name: Loader, Simon P.
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 590

description: Discoveries of new species can greatly impact our understanding of the biogeography of a region. For example, groups of amphibian lineages restricted to the Afrotemperate forests of Tanzania and Ethiopia are indicative of a shared biogeographical history of this highly discontinuous ecosystem. Curiously, many of these lineages are absent from the geographically intermediate Kenyan highlands. This phylogeographical interval is generally considered to be attributable to the younger, volcanic origins of much of the Kenyan highlands, and thus an amphibian fauna that is derived largely from recent colonization events rather than comprising older relicts. Contrasting with this view, here we report on the discovery of a single specimen of Bufonidae (true toad) from Mount Kenya. The specimen belongs to a species new to science and deserves recognition at the generic level owing to its notable molecular phylogenetic and morphological divergences from other described taxa. It is most closely related to the Tanzanian genera Churamiti and Nectophrynoides. The discovery of this new toad and its association with Afrotemperate species is significant because it links Kenya to the biogeographically more ancient Tanzanian mountains and supports the potential longevity of the Afrotemperate forests in Kenya. Broadly, it highlights that we are still adding major branches to the phylogeny of anurans.
Localization behavior of vibrational modes in granular packings
Creators: name: Zeravcic, Zorana
name: van Saarloos, Wim
name: Nelson, David R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the localization of vibrational modes of frictionless granular media. We introduce a new method, motivated by earlier work on non-Hermitian quantum problems, which works well both in the localized regime where the localization length $ξ$ is much less than the linear size $L$ and in the regime $ξ$ grater or of order $L$ when modes are extended throughout our finite system. Our very lowest frequency modes show "quasi-localized" resonances away from the jamming point; the spatial extent of these regions increases as the jamming point is approached, as expected theoretically. Throughout the remaining frequency range, our data show no signature of the nearness of the jamming point and collapse well when properly rescaled with the system size. Using Random Matrix Theory we derive the scaling relation $ξ$ ~ $L^{d/2}$ for the regime $ξ$ >> $L$ in $d$ dimensions.
description: 6 pages, 7 figures
Gravitational energy in stationary spacetimes
Creators: name: Katz, Joseph
name: Lynden-Bell, Donald
name: Bicak, Jiri
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Static observers remain on Killing-vector world lines and measure the rest-mass+kinetic energies of particles moving past them, and the flux of that mechanical energy through space and time. The total mechanical energy is the total flux through a spacelike cut at one time. The difference between the total mass-energy and the total mechanical energy is the total gravitational energy, which we prove to be negative for certain classes of systems. For spherical systems, Misner, Thorne and Wheeler define the total gravitational energy this way. To obtain the gravitational energy density analogous to that of electromagnetism we first use Einstein's equations with integrations by parts to remove second order derivatives. Next we apply a conformal transformation to reexpress the scalar 3-curvature of the 3-space. The resulting density is non-local. We repeat the argument for mechanical energies as measured by stationary observers moving orthogonally to constant time slices like the "zero angular momentum" observers of Bardeen who exist even within ergospheres.
description: Accepted for publication in Class. Quantum Grav
Efficient implementation of GALS systems over commercial synchronous FPGAs: a new approach
Creators: name: Garcia-Lasheras, Javier D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences
subject: B.6.1; B.7.1

description: The new vision presented is aimed to overcome the logic overhead issues that previous works exhibit when applying GALS techniques to programmable logic devices. The proposed new view relies in a 2-phase, bundled data parity based protocol for data transfer and clock generation tasks. The ability of the introduced methodology for smart real-time delay selection allows the implementation of a variety of new methodologies for electromagnetic interference mitigation and device environment changes adaptation.
description: English version of the paper presented in the Spanish Workshop on Reconfigurable Computing and Applications, Zaragoza (2007)
Performance of An Axial Gas Ionization Detector
Creators: name: Adhikari, S.
name: Basu, C.
name: Samanta, C.
name: Brahmachari, S. S.
name: Das, B. P.
name: Basu, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: An axial gas ionization chamber has been fabricated for use as a $ΔE$ detector in heavy ion induced nuclear reactions. Different operating parameters such as gas type, pressure, anode voltage and anode structures have been optimized. The transparency of the anode structure is observed to play an important role in improving the energy resolution of the detector.
description: 19 pages, 7 figures
High-Precision Branching Ratio Measurement and Spin Assignment Implications for $^{62}$Ga Superallowed $β$ Decay
Creators: name: MacLean, A. D.
name: Laffoley, A. T.
name: Svensson, C. E.
name: Ball, G. C.
name: Leslie, J. R.
name: Andreoiu, C.
name: Babu, A.
name: Bhattacharjee, S. S.
name: Bidaman, H.
name: Bildstein, V.
name: Burbadge, C.
name: Bowry, M.
name: Cheng, C.
name: Cross, D. S.
name: Diaz-Varela, A.
name: Dillmann, I.
name: Dunlop, M. R.
name: Dunlop, R.
name: Evitts, L. J.
name: Finlay, P.
name: Gillespie, S.
name: Garnsworthy, A. B.
name: Garrett, P. E.
name: Gopaul, E.
name: Griffin, C. J.
name: Grinyer, G. F.
name: Hackman, G.
name: Henderson, J.
name: Jigmeddorj, B.
name: Leach, K. G.
name: Kassanda, E.
name: McAfee, J.
name: Moukaddam, M.
name: Natzke, C.
name: Nittala, S.
name: Olaizola, B.
name: Park, J.
name: Paxman, C.
name: Pore, J. L.
name: Porzio, C.
name: Radich, A. J.
name: Ruotsalainen, P.
name: Saito, Y.
name: Sharma, S.
name: Smallcombe, J.
name: Smith, J. K.
name: Sultana, R.
name: Turko, J.
name: Williams, J.
name: Yates, D.
name: Zidar, T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A high-precision branching ratio measurement for the superallowed Fermi $β^{+}$ emitter $^{62}$Ga was performed with the Gamma-Ray Infrastructure for Fundamental Investigations of Nuclei (GRIFFIN) spectrometer at the Isotope Separator and Accelerator (ISAC) radioactive ion beam facility at TRIUMF. The high efficiency of the GRIFFIN spectrometer allowed 63 $γ$-ray transitions, with intensities down to $\approx$1 part per million (ppm) per $^{62}$Ga $β^{+}$ decay, to be placed in the level scheme of the daughter nucleus $^{62}$Zn, establishing the superallowed $β$ branching ratio for $^{62}$Ga decay to be 99.8577$^{+0.0023}_{-0.0029}\%$, a factor of 4 more precise than the previous world average. For several cascades, $γ-γ$ angular correlation measurements were performed to assign spins and/or determine the mixing ratios of transitions. In particular, the spin of the 2.342 MeV excited state in the daughter nucleus $^{62}$Zn was definitively assigned as $J = 0$. This assignment resolves a discrepancy between previous measurements and has important implications for the isospin symmetry breaking correction, $δ_{C1}$, in $^{62}$Ga superallowed Fermi $β$ decay.
description: A text label in Figure 12 has been corrected compared to the original submission
Isolation and characterization of a family of porin proteins from Helicobacter pylori
Creators: name: Exner, Maurice Michael
Publisher: name: University of British Columbia
Year: 2009

description: Porins are pore forming proteins found in the outer membranes of gram negative bacteria. They are involved in the transport of small, hydrophilic molecules across the membrane, and are thus important in the uptake of a variety of substances from the external environment. An attempt was made to identify porin(s) in the outer membrane of the gastric pathogen Helicobacter pylori in order to gain insight into the physiology of this organism. Growth studies were done in order to optimize large scale growth conditions for H. pylori, and a novel growth media was developed such that large masses of membrane proteins could be obtained. Five porin proteins, (HopA, B, C, D and E) were identified and purified. N-terminal sequence analysis revealed that all five shared a strong degree of homology with each other which indicated that this was a group of related proteins. Model membrane analyses showed that the HopA, B, C, and D proteins functioned as channels. They all were functional as monomers, and they possessed similar channel forming properties in that they formed channels with conductances between 0.24 and 0.36 nS in 1.0 M KC1 pH 7.0. HopE also formed channels, but it showed different pore forming characteristics, as even though it still appeared to function as a monomer, it formed large channels with conductances of 1.5 nS in 1.0 M KC1. Since most porins previously isolated function as trimers, a series of major outer membrane proteins which were isolated as monomers from a variety of organisms were examined for pore forming ability in order to further show precedence for the existence of functional monomeric porins. Six of these proteins functioned as porins, indicating that porins which are functional as monomers may be more common than previously thought. Growth studies utilizing a defined medium demonstrated that the expression of HopA, B, and C was regulated by the amount of iron in the medium, and the different expression levels of the porins appeared to affect the uptake of a number of different antibiotics. Degenerate PCR primers created from N-terminal and internal protein sequences allowed amplification of DNA sequences encoding the N-terminal portions of two of the H. pylori porin proteins, and these DNA sequences were used to identify hopA and hopB clones from a H. pylori chromosomal DNA library that was created. Hybridization with H. pylori chromosomal DNA indicated that the hopA and hopB genes are located at different loci on the chromosome.
การขยายพันธุ์โมกมัน[Wrightia arborea (Dennst.) Mabb.] ในหลอดทดลอง
Creators: name: กรณ์ กรภัทร์ชัยกุล
name: ลัดดาวัลย์ รักษ์ธรรม
Publisher: name: กองบริหารการวิจัย มหาวิทยาลัยธรรมศาสตร์
Year: 2558
Subjects: โมกมัน, การขยายพันธุ์, ในหลอดทดลอง

description: 5, 23, วารสารวิทยาศาสตร์และเทคโนโลยี