cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Кровотечение как причина несостоявшейся и состоявшейся материнской смертности в условиях мегаполиса
Creators: name: Оленев Антон Сергеевич
name: Вученович Юлия Дмитриевна
name: Новикова Владислава Александровна
name: Радзинский Виктор Евсеевич+
Publisher: name: Акушерство и гинекология: Новости. Мнения. Обучения
Year: 2019
Subjects: акушерское кровотечение
материнская смертность
near miss
акушерская агрессия
рубец на матке после кесарева сечения
ожирение

description: Цель настоящего исследования – дифференцировать структуру причин кровотечений при несостоявшейся и состоявшейся материнской смертности (МС) в российском мегаполисе. Материал и методы. Ретроспективно проведено аналитическое когортное исследование 9 случаев МС и 77 несостоявшейся МС (near miss), обусловленных акушерским кровотечением, произошедших в российском мегаполисе. Результаты. Доля женщин со сроком беременности <22 нед при МС выше, чем при near miss [отношение шансов (ОШ) = 95; 95% доверительный интервал (ДИ) 8,87–1017,103]. Установлена связь между наличием кесарева сечения (КС) в анамнезе и предлежанием плаценты (ОШ=26,92; 95% ДИ 8,48–85,45), несостоятельностью рубца на матке (полный и неполный разрыв матки, маточная аневризма) (ОШ=3,44; 95% ДИ 1,35–8,82) и врастанием плаценты (χ2=59,2; р<0,001). Маточная аневризма и врастание плаценты диагностированы только при наличии рубца на матке. Показаны отличия весовых характеристик женщин с МС и near miss (χ2=28,27; p=0,00003). Заключение. Ресурс мегаполиса по предотвращению МС, обусловленной кровотечением, высокоэффективен, позволяет «едва не умереть» женщинам с кровопотерей объемом до 6000 мл (95,24 мл/кг). Разрыв аневризмы селезеночной артерии как непрямая причина МС, будучи редкой причиной острой хирургической патологии в акушерстве, остается фактором риска МС. Эктопическая беременность сохраняет высокие риски МС. Эклампсия в сочетании с преждевременной отслойкой нормально расположенной плаценты, требующая экстренного КС, осложнившегося гипотоническим кровотечением, является потенциально фатальной комбинацией даже в условиях мегаполиса. При МС не исключен фактор ятрогении.
FORWARD CONTRACTING OF INPUTS: A FARM-LEVEL ANALYSIS
Creators: name: Perry, Janet E.
name: Mishra, Ashok K.
name: Perry, Janet E.
name: Mishra, Ashok K.
Publisher: name: Unknown
Year: 1999
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: forward contracting
subject: inputs
subject: risk

description: Forward contracting of inputs in production agriculture is becoming increasingly important as more farmers attempt to manage risk. Using a logit model and farm-level data, this analysis estimates the effect of factors on the probability of a producer using forward input contracting. Results suggest that use of contracting in selling of crops and livestock, technology, farm size, geographic location, participation in government commodity programs, and use of extension services are important factors affecting the choice to forward contract inputs.
The characteristic cohomology class of a triangulated category
Creators: name: Baues, H. -J.
name: Muro, F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 18E30, 18G60, 18D05, 55S35

description: This is the final version of a series of papers uploaded in May 25, 2005. We have splitted the long last paper of the previous version in two parts to make it easier to understand. The results are essentially the same, although the presentation has changed substantially. The first three papers have not changed. This is a collection of five papers on the foundation of triangulated categories in the context of groupoid-enriched categories, termed track categories, and characteristic cohomology classes. As a main result it is shown that given an additive category A with a translation functor t: A --> A and a class V in translation cohomology H^3(A,t) then two simple properties of V imply that (A,t) is a triangulated category. The cohomology class V yields an equivalence class (B,[s]) where B is a track category with homotopy category A and [s] is the homotopy class of a pseudofunctor s: B --> B inducing t. The two properties of V correspond to natural axioms on B and s which again imply that (A,t) is a triangulated category. The five papers of this volume depend on each other by cross references, but each paper can be read independently of the others so that the reader is free to choose one of the papers to start. Each paper has its own abstract, introduction and literature.
description: 166 pages, some diagrams do not appear correctly in the DVI file
Low case numbers enable long-term stable pandemic control without lockdowns
Creators: name: Contreras, Sebastian
name: Dehning, Jonas
name: Mohr, Sebastian B.
name: Bauer, Simon
name: Spitzner, F. Paul
name: Priesemann, Viola
Publisher: name: arXiv
Year: 2020
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: The traditional long-term solutions for epidemic control involve eradication or population immunity. Here, we analytically derive the existence of a third viable solution: a stable equilibrium at low case numbers, where test-trace-and-isolate policies partially compensate for local spreading events, and only moderate restrictions remain necessary. In this equilibrium, daily cases stabilize around ten new infections per million people or less. However, stability is endangered if restrictions are relaxed or case numbers grow too high. The latter destabilization marks a tipping point beyond which the spread self-accelerates. We show that a lockdown can reestablish control and that recurring lockdowns are not necessary given sustained, moderate contact reduction. We illustrate how this strategy profits from vaccination and helps mitigate variants of concern. This strategy reduces cumulative cases (and fatalities) 4x more than strategies that only avoid hospital collapse. In the long term, immunization, large-scale testing, and international coordination will further facilitate control.
description: Final version
FACTORS AFFECTING CONSERVATION PRACTICE BEHAVIOR OF CRP PARTICIPANTS IN ALABAMA
Creators: name: Hendrix, Shannon
name: Wheelock, Gerald
name: Onianwa, Okwudili O.
name: Hendrix, Shannon
name: Wheelock, Gerald
name: Onianwa, Okwudili O.
Publisher: name: Unknown
Year: 1999
Subjects: subject: Farm Management
subject: Land Economics/Use
subject: conservation practices
subject: Conservation Reserve Program
subject: CRP contracts
subject: cost share
subject: erodible cropland
subject: grass practice
subject: land retirement
subject: tree practice

description: This study examines the factors that affect conservation practice choices of CRP farmers in Alabama. From over 9,000 contracts enrolled in the state between 1986 and 1995, 594 were randomly selected for the study. A multiple-regression analysis was employed to analyze the data. Results indicate that education, ratio of cropland in CRP, farm size, gender, prior crop practice, and geographic location of contract had a significant influence on the choice of conservation practice adopted.
Выбор метода извлечения плода при кесаревом сечении во втором периоде родов
Creators: name: Тажетдинов Евгений Халитович
Publisher: name: Акушерство и гинекология: Новости. Мнения. Обучения
Year: 2019
Subjects: кесарево сечение
второй период родов
полное открытие маточного зева
метод «толкай»
метод «тяни»

description: Кесарево сечение – одна из самых распространенных операций в мире. Выполненное при полном открытии маточного зева, оно связано с более высоким риском материнских и неонатальных осложнений. Для преодоления технических трудностей при извлечении плода чаще всего используются два метода: «толкай» – извлечение за головку, «тяни» – поворот плода на ножку и извлечение за тазовый конец. Цель исследования – выявить наиболее эффективный и безопасный метод извлечения плода при кесаревом сечении, выполненном во втором периоде родов. Критерии включения: одноплодная беременность, головное предлежание плода, срок беременности 37–42 нед, полное раскрытие маточного зева, интактная матка. 158 женщин и их новорожденные были включены в исследование (77 – группа «тяни», 81 – группа «толкай»). Первичным критерием оценки была травма нижнего сегмента матки. Вторичные критерии оценки включали травму шейки матки, интраи послеоперационную кровопотерю, степень снижения гемоглобина у матери в послеоперационном периоде, показатель послеоперационного койко-дня, оценку новорожденного по шкале Апгар на 1-й и 5-й минуте, поступление в отделение неонатальной реанимации и интенсивной терапии. Травма нижнего сегмента матки была достоверно реже в группе «тяни» – у 6 (7,8%) против 10 (12,3%) пациенток в группе «толкай» (р=0,029). Остальные критерии не имели статистически значимых различий. Согласно полученным нами данным, метод «тяни» является более эффективной и безопасной альтернативой методу «толкай».
Влияние прегестационного ожирения на перинатальные исходы у женщин c гестационным сахарным диабетом
Creators: name: Папышева Ольга Виуленовна
name: Котайш Галина Александровна
name: Савенкова Ирина Викторовна
name: Аракелян Гаянэ Альбертовна
name: Лукановcкая Ольга Борисовна
name: Дамирова Саадет Фирудин кызы
Publisher: name: Акушерство и гинекология: Новости. Мнения. Обучения
Year: 2019
Subjects: ожирение
метаболический синдром
гестационный сахарный диабет
синдром угнетения центральной нервной системы

description: Сочетанное влияние ожирения матери и гестационного сахарного диабета (ГСД), развившегося на этом фоне, на состояние здоровья потомства, даже в период новорожденности, изучено крайне недостаточно. Цель настоящего исследования – изучение влияния ожирения матери на состояние здоровья новорожденных при ГСД. Материал и методы. Ретроспективный анализ историй родов 272 беременных с ГСД и карт развития их новорожденных, родоразрешенных в 2017–2019 гг. в родильном отделении ГБУЗ «Городская клиническая больница № 29 им. Н.Э. Баумана» Департамента здравоохранения г. Москвы при доношенном сроке гестации. Результаты. Состояние здоровья новорожденных от матерей с ГСД на фоне ожирения было худшим по сравнению с детьми нормовесных матерей: а) оценка по шкале Апгар на 1-й минуте на 0,3 балла, а на 5-й минуте – на 0,4 балла ниже; б) синдром угнетения центральной нервной системы встречался в 1,7 раза чаще; в) гепатомегалия – в 1,7 раза чаще; г) диабетическая кардиомиопатия – в 2,3 раза чаще. Заключение. По-видимому, существуют 2 различных варианта (подтипа) ГСД в зависимости от наличия прегравидарного ожирения.
Spectral functions of the spinless Holstein model
Creators: name: Loos, J.
name: Hohenadler, M.
name: Fehske, H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: An analytical approach to the one-dimensional spinless Holstein model is proposed, which is valid at finite charge-carrier concentrations. Spectral functions of charge carriers are computed on the basis of self-energy calculations. A generalization of the Lang-Firsov canonical transformation method is shown to provide an interpolation scheme between the extreme weak- and strong-coupling cases. The transformation depends on a variationally determined parameterthat characterizes the charge distribution across the polaron volume. The relation between the spectral functions of polarons and electrons, the latter corresponding to the photoemission spectrum, is derived. Particular attention is paid to the distinction between the coherent and incoherent parts of the spectra, and their evolution as a function of band filling and model parameters. Results are discussed and compared with recent numerical calculations for the many-polaron problem.
description: 20 pages, 15 figures, final version
Multi-charged moments and symmetry-resolved Rényi entropy of free compact boson for multiple disjoint intervals
Creators: name: Gaur, Himanshu
name: Yajnik, Urjit A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study multi-charged moments and symmetry-resolved Rényi entropy of free compact boson for multiple disjoint intervals. The Rényi entropy evaluation involves computing the partition function of the theory on Riemann surfaces with genus g>1. This makes Rényi entropy sensitive to the local conformal algebra of the theory. The free compact boson possesses a global U(1) symmetry with respect to which we resolve Rényi entropy. The multi-charged moments are obtained by studying the correlation function of flux-generating vertex operators on the associated Riemann surface. Symmetry-resolved Rényi entropy is then obtained from the Fourier transforms of the charged moments. Rényi entropy is shown to have the familiar equipartition into local charge sectors up to the leading order. The multi-charged moments are also essential in studying the symmetry resolution of mutual information. The multi-charged moments of the self-dual compact boson and massless Dirac fermion are also shown to match for the cases when the associated reduced density matrix moments are known to be the same. Finally, we numerically check our results against the tight-binding model.
description: 30 pages, 12 figures
Stand valuation risk from yield prediction and market uncertainty
Creators: name: Deck, Julian Demestre
Publisher: name: University of British Columbia
Year: 2009

description: This thesis explores sampling and system error risks affecting projected stand values. British Columbia's Second Complete Provincial Inventory data for coastal Douglas-fir (Pseudotsuga menziesii var. menziesii), collected between 1961 and 1977, is used to construct a multiple regression equation predicting stand volume point estimates and prediction intervals in order to analyze system error and sampling error from a silvicultural and financial perspective. Incorporating sampling error from the model, represented by the 95% prediction interval, on silvicultural and financial decisions is explored for site indexes 15 m, 25 m and 35 m. System error is also analyzed by performing sensitivity analysis on several key independent variables: basal area; site preparation cost; projected timber price and discount rate. Incorporating sampling error into mean annual increment and long term sustained yield calculations can cause significant differences in harvest quotas. Financially, including sampling error can create considerable variation to projected net present values and internal rates of return. This risk to a projected NPV should be incorporated into the evaluation by calculating a new NPV with a risk adjusted discount rate. The effects of system error from uncertain future timber prices has the most profound impact on projected stand value. In addition, the choice of discount rate profoundly effects net present value. Basal area and site preparation cost variation have less of an influence on projected stand value. Analysis of site indexes lead to the conclusion that only SI 20 m and above are inside the extensive margin and are attractive in terms of private silvicultural investment.
Microlejeunea udarii P. K. Verma et S. C. Srivast., J.
Creators: name: Söderström, Lars
name: Hagborg, Anders
name: Konrat, Matt Von
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Bryophyta
Jungermanniopsida
Porellales
Lejeuneaceae
Microlejeunea
Microlejeunea udarii

description: Microlejeunea udarii P.K.Verma et S.C.Srivast.,
J. Bombay Nat. Hist. Soc. 108 (2): 122, 2011 [2012] (see Verma & Srivastava 2011).
TYPE: “ INDIA: Tamil Nadu: Nilgiri hills – Ootacamund, Pykara, 2,100 m, 29.iii.2001; Coll.: P.K. Verma and A. Alam, 13636 (Holotype LWU)”.
description: Published as part of Söderström, Lars, Hagborg, Anders & Konrat, Matt Von, 2014, Early Land Plants Today: Index of Liverworts & Hornworts 2011 - 2012, pp. 61-85 in Phytotaxa 170 (2) on page 72, DOI: 10.11646/phytotaxa.170.2.1, http://zenodo.org/record/4779611
Qubit-excitation-based adaptive variational quantum eigensolver
Creators: name: Yordanov, Yordan S.
name: Armaos, V.
name: Barnes, Crispin H. W.
name: Arvidsson-Shukur, David R. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Molecular simulations with the variational quantum eigensolver (VQE) are a promising application for emerging noisy intermediate-scale quantum computers. Constructing accurate molecular ansätze that are easy to optimize and implemented by shallow quantum circuits is crucial for the successful implementation of such simulations. Ansätze are, generally, constructed as series of fermionic-excitation evolutions. Instead, we demonstrate the usefulness of constructing ansätze with "qubit-excitation evolutions", which, contrary to fermionic excitation evolutions, obey "qubit commutation relations". We show that qubit excitation evolutions, despite the lack of some of the physical features of fermionic excitation evolutions, accurately construct ansätze, while requiring asymptotically fewer gates. Utilizing qubit excitation evolutions, we introduce the qubit-excitation-based adaptive (QEB-ADAPT)-VQE protocol. The QEB-ADAPT-VQE is a modification of the ADAPT-VQE that performs molecular simulations using a problem-tailored ansatz, grown iteratively by appending evolutions of qubit excitation operators. By performing classical numerical simulations for small molecules, we benchmark the QEB-ADAPT-VQE, and compare it against the original fermionic-ADAPT-VQE and the qubit-ADAPT-VQE. In terms of circuit efficiency and convergence speed, we demonstrate that the QEB-ADAPT-VQE outperforms the qubit-ADAPT-VQE, which to our knowledge was the previous most circuit-efficient scalable VQE protocol for molecular simulations.
Recursion relation for instanton counting for $SU(2)$ ${\cal N}=2$ SYM in NS limit of $Ω$ background
Creators: name: Poghosyan, Hasmik
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we investigate different ways of deriving the A-cycle period as a series in instanton counting parameter $q$ for ${\cal N}=2$ SYM with up to four antifundamental hypermultiplets in NS limit of $Ω$ background. We propose a new method for calculating the period and demonstrate its efficiency by explicit calculations. The new way of doing instanton counting is more advantageous compared to known standard techniques and allows to reach substantially higher order terms with less effort. This approach is applied for the pure case as well as for the case with several hypermultiplets. We also investigate a numerical method for deriving the $A$-cycle period valid for arbitrary values of $q$. Analyzing large $q$ asymptotic we get convincing agreement with an analytic expression deduced from a conjecture by Alexei Zamolodchikov in a different context.
description: 28 pages, 6 figures, some clarifications and citations added, published version
[Brev til DKNVS]
Creators: name: Videnskabsselskabet
name: Det Kongelige Norske Videnskabers Selskab (DKNVS)
Publisher: name: Unknown
Year: 1813

description: Div. regninger
description: Seks ark, dokumentet er eg. Vedlegg til regnskapet. Polydoc nr. 1: 1142. Polydoc nr. 2: 540.
Особенности липидного спектра у новорожденных от матерей с сахарным диабетом
Creators: name: Папышева Ольга Виуленовна
name: Маяцкая Татьяна Александровна
Publisher: name: Акушерство и гинекология: Новости. Мнения. Обучения
Year: 2019
Subjects: гестационный сахарный диабет
макросомия
липиды плазмы

description: Цель – оценить параметры липидного спектра новорожденных, рожденных у матерей, страдающих во время беременности сахарным диабетом (СД) различных типов. Материал и методы. Нами обследованы 100 беременных и их новорожденных, которых подразделили на 6 групп: I – СД типа 1 (11 пар); II – СД типа 2 (10 пар); III – инсулинопотребный гестационный сахарный диабет (34 пар); IV – ГСД, не требующий инсулина (28 пар); V – ожирение (7 пар); VI – контроль (10 пар). Мы сравнивали параметры липидного спектра беременных и их новорожденных I–VI групп. Результаты. У беременных I–VI групп выявлена физиологическая гиперхолестеринемия. Уровень триглицеридов (ТГ) был максимальным в I и III группах. В I группе обнаружено наименьшее содержание С-пептида. Формированию диабетической фетопатии (ДФ) способствовали высокие уровни ТГ и HbA1c в III триместре у матери. У новорожденных I и II групп отмечена гипогликемия, а ее выраженность зависела от уровня HbA1c в III триместре. В I–IV группах обнаружено снижение уровня ТГ и коэффициента атерогенности в III и IV – повышение холестерина липопротеидов высокой плотности (ХС ЛПВП). У новорожденных с ДФ (n=44) уровень ХС ЛПВП был выше, чем без ДФ (n=56). Выводы. Гипохолестеринемию и гипотриглицеридемию у новорожденных не стоит приписывать к положительным влияниям СД, так как они являются приспособительными состояниями для ребенка. В дальнейшем липидный спектр у детей, рожденных от матерей с СД, может кардинально поменяться.
The Cauchy convergence of T and P-approximant templates for test-mass Kerr binary systems
Creators: name: Porter, Edward K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work we examine the Cauchy convergence of both post-Newtonian (T-approximant) and re-summed post-Newtonian (P-approximant) templates for the case of a test-mass orbiting a Kerr black hole along a circular equatorial orbit. The Cauchy criterion demands that the inner product between the $n$ and $n+1$ order approximation approaches unity, as we increase the order of approximation. In previous works, it has been shown that we achieve greater fitting factors and better parameter estimation using the P-approximant templates for both Schwarzschild and Kerr black holes. In this work, we show that the P-approximant templates also display a faster Cauchy convergence making them a superior template to the standard post-Newtonian templates.
description: 5 pages, Replaced with shortened published version
Policy Reform and Farm Sector Adjustment in India
Creators: name: Landes, Rip
name: Gulati, Ashok
name: Landes, Rip
name: Gulati, Ashok
Publisher: name: Unknown
Year: 2003
Subjects: subject: Agricultural and Food Policy
subject: India
subject: agriculture
subject: policy
subject: reform
subject: adjustment

description: Policy reforms outside agriculture in the early 1990s accelerated growth in per capita incomes and food demand and also improved the terms of trade for the agriculture. Agricultural policies and institutions, traditionally focused on achieving food grain self sufficiency within a closed economy, have, however, been slow to adapt to a new environment of diversifying demand, more open markets, and a greater role for the private sector. Support price policy has remained delinked from domestic and international market realities, creating significant budgetary costs and market distortion. Inability to reform price policy and contain input subsidies has led to a decline in public investment in agriculture at a time when investment in new infrastructure and institutions is needed. Implementation of targeted safety net programs has proven difficult due to weak administrative capacity and local resource constraints. Reforms at the border, when implemented, have typically exposed inefficiencies in the domestic market that limit competitiveness. Consensus building for change in agricultural policy remains difficult in India. With the farm sector accounting for 25 percent of GDP and 60 percent of employment, there is a deep-rooted perception that the welfare of the poor is linked closely to the protection of agriculture. More research within economy-wide frameworks may be effective in evaluating impacts and provoking debate on fundamental reform. Also needed is research on the implications of market-oriented reforms for food price stability, and on impediments to private investment in agriculture.
Constructing and Machine Learning Calabi-Yau Five-folds
Creators: name: Alawadhi, R.
name: Angella, D.
name: Leonardo, A.
name: Gherardini, T. Schettini
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Machine Learning (cs.LG)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We construct all possible complete intersection Calabi-Yau five-folds in a product of four or less complex projective spaces, with up to four constraints. We obtain $27068$ spaces, which are not related by permutations of rows and columns of the configuration matrix, and determine the Euler number for all of them. Excluding the $3909$ product manifolds among those, we calculate the cohomological data for $12433$ cases, i.e. $53.7 \%$ of the non-product spaces, obtaining $2375$ different Hodge diamonds. The dataset containing all the above information is available at https://www.dropbox.com/scl/fo/z7ii5idt6qxu36e0b8azq/h?rlkey=0qfhx3tykytduobpld510gsfy&dl=0 . The distributions of the invariants are presented, and a comparison with the lower-dimensional analogues is discussed. Supervised machine learning is performed on the cohomological data, via classifier and regressor (both fully connected and convolutional) neural networks. We find that $h^{1,1}$ can be learnt very efficiently, with very high $R^2$ score and an accuracy of $96\%$, i.e. $96 \%$ of the predictions exactly match the correct values. For $h^{1,4},h^{2,3}, η$, we also find very high $R^2$ scores, but the accuracy is lower, due to the large ranges of possible values.
description: 40 pages, 8 tables, 2 figures; v2: published in Fortschritte der Physik - Progress of Physics, minor changes in the introduction, conclusion and acknowledgements, references added
Deconstructing the energy landscape: new algorithms for folding heteropolymers
Creators: name: Elser, Veit
name: Rankenburg, Ivan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Biomolecules (q-bio.BM)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: We apply the computational methodology of phase retrieval to the problem of folding heteropolymers. The ground state fold of the polymer is defined by the intersection of two sets in the configuration space of its constituent monomers: a geometrical chain constraint and a threshold constraint on the contact energy. A dynamical system is then defined in terms of the projections to these constraint sets, such that its fixed points solve the set intersection problem. We present results for two off-lattice HP models: one with only rotameric degrees of freedom, and one proposed by Stillinger et al. with flexible bond angles. Our phase retrieval inspired algorithm is competitive with more established algorithms and even finds lower energy folds for one of the longer polymer chains.
description: 7 pages, 8 figures
How can the optical variation properties of active galactic nuclei be unbiasedly measured?
Creators: name: Hu, Xu-Fan
name: Cai, Zhen-Yi
name: Wang, Jun-Xian
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The variability of active galactic nuclei (AGNs) is ubiquitous but has not yet been understood. Measuring the optical variation properties of AGNs, such as variation timescale and amplitude, and then correlating them with their fundamental physical parameters, have long served as a critical way of exploring the origin of AGN variability and the associated physics of the accretion process in AGNs. Obtaining accurate variation properties of AGNs is thus essential. It has been found that the damped random walk (DRW) process can well describe the AGN optical variation, however, there is a controversy over how long a minimal monitoring baseline is required to obtain unbiased variation properties. In this work, we settle the controversy by exhaustively scrutinizing the complex combination of assumed priors, adopted best-fit values, ensemble averaging methods, and fitting methods. Then, the newly proposed is an optimized solution where unbiased variation properties of an AGN sample possessing the same variation timescale can be obtained with a minimal baseline of about 10 times their variation timescale. Finally, the new optimized solution is used to demonstrate the positive role of time domain surveys to be conducted by the Wide Field Survey Telescope in improving constraints on AGN variation properties.
description: 14 pages, 12 figures, ApJ accepted
Control Barriers in Bayesian Learning of System Dynamics
Creators: name: Dhiman, Vikas
name: Khojasteh, Mohammad Javad
name: Franceschetti, Massimo
name: Atanasov, Nikolay
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: Robotics (cs.RO)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: This paper focuses on learning a model of system dynamics online while satisfying safety constraints. Our objective is to avoid offline system identification or hand-specified models and allow a system to safely and autonomously estimate and adapt its own model during operation. Given streaming observations of the system state, we use Bayesian learning to obtain a distribution over the system dynamics. Specifically, we propose a new matrix variate Gaussian process (MVGP) regression approach with an efficient covariance factorization to learn the drift and input gain terms of a nonlinear control-affine system. The MVGP distribution is then used to optimize the system behavior and ensure safety with high probability, by specifying control Lyapunov function (CLF) and control barrier function (CBF) chance constraints. We show that a safe control policy can be synthesized for systems with arbitrary relative degree and probabilistic CLF-CBF constraints by solving a second order cone program (SOCP). Finally, we extend our design to a self-triggering formulation, adaptively determining the time at which a new control input needs to be applied in order to guarantee safety.
description: Submitted to IEEE Transactions on Automatic Control. Journal extension of 1912.10116. arXiv admin note: text overlap with arXiv:1912.10116
Monodromy of the perverse sheaf of vanishing cycles of some simple Shimura varieties and applications
Creators: name: Boyer, Pascal
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14G22, 14G35, 11G09, 11G35, 11R39, 14L05, 11G45, 11Fxx

description: In the geometric situation of the simple Shimura varieties of Kottwitz studied in Harris and Taylor's book, we describe the monodromy filtration of the vanishing cycles complex and the spectral sequence associated to it. We prove in particular that this filtration coincides with the weight one up to shift. Thanks to the Berkovich-Fargues' theorem, we deduce the description of the local monodromy filtration of the Deligne-Carayol model. In application, we obtain the description of the local components of cohomological automorphic representations of certains unitary groups, a global Jacquet-Langlands correspondence between two such groups and a proof of the weight-monodromy conjecture for the cohomology of these Shimura varieties.
description: 83 pages, 13 figures, some minor changes
Supplementary Figures from Time and space in segmentation
Creators: name: Clark, Erik
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 60114 Systems Biology
subject: FOS: Biological sciences

description: Supplementary Figure 1: summary diagrams of all models.; Supplementary Figure 2: additional results from the clock and two timers model.; Supplementary Figure 3: additional results from the clock and timer model with feedback.; Supplementary Figure 4: additional results from the clock and three timers model.
Современные представления о здоровье детей, рожденных матерями с сахарным диабетом
Creators: name: Логинова Екатерина Владимировна
name: Аракелян Гаянэ Альбертовна
name: Савенкова Ирина Викторовна
name: Гагаев Даниил Челебиевич
name: Оразмурадов Агамурад Акмамедович
name: Гагаев Челеби Гасанович
Publisher: name: Акушерство и гинекология: Новости. Мнения. Обучения
Year: 2019
Subjects: беременность
сахарный диабет
гестационный сахарный диабет
дети от матерей с диабетом
гипергликемия

description: Сахарный диабет (СД) во время беременности связан с увеличением осложнений для матери и плода, а также с неблагоприятными отдаленными последствиями для новорожденного. Ежегодно количество беременных с СД увеличивается, что связано с особенностями современного образа жизни: высококалорийным питанием, отсутствием физической активности, часто приводящим к нарушению жирового обмена, также с экспонентным увеличением заболеваемости СД типа 2, улучшением диагностики, введением единых критериев для скрининга гестационного сахарного диабета (ГСД). СД у матери оказывает существенное влияние на частоту внутриутробных, интранатальных и неонатальных осложнений. Риск перинатальных осложнений у плода и новорожденного выше при прегестационном СД, но недиагностированный и/или плохо контролируемый ГСД может привести к аналогичным последствиям.
Disk Evolution Study Through Imaging of Nearby Young Stars (DESTINYS): HD 34700 A unveils an inner ring
Creators: name: Columba, G.
name: Rigliaco, E.
name: Gratton, R.
name: Mesa, D.
name: D'Orazi, V.
name: Ginski, C.
name: Engler, N.
name: Williams, J. P.
name: Bae, J.
name: Benisty, M.
name: Birnstiel, T.
name: Delorme, P.
name: Dominik, C.
name: Facchini, S.
name: Menard, F.
name: Pinilla, P.
name: Rab, C.
name: Ribas, Á.
name: Squicciarini, V.
name: van Holstein, R. G.
name: Zurlo, A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context. The study of protoplanetary disks is fundamental to understand their evolution and interaction with the surrounding environment, and to constrain planet formation mechanisms.
 Aims. We aim at characterising the young binary system HD 34700 A, which shows a wealth of structures.
 Methods. Taking advantage of the high-contrast imaging instruments SPHERE at the VLT, LMIRCam at the LBT, and of ALMA observations, we analyse this system at multiple wavelengths. We study the rings and spiral arms morphology and the scattering properties of the dust. We discuss the possible causes of all the observed features.
 Results. We detect for the first time, in the H$α$ band, a ring extending from $\sim$65 au to ${\sim}$120 au, inside the ring already known from recent studies. These two have different physical and geometrical properties. Based on the scattering properties, the outer ring may consist of grains of typical size $a_{out} > 4 μm$, while the inner ring of smaller grains ($a_{in} <= 0.4 {μm}$). Two extended logarithmic spiral arms stem from opposite sides of the disk. The outer ring appears as a spiral arm itself, with a variable radial distance from the centre and extended substructures. ALMA data confirm the presence of a millimetric dust substructure centred just outside the outer ring, and detect misaligned gas rotation patterns for HD 34700 A and B.
 Conclusions. The complexity of HD 34700 A, revealed by the variety of observed features, suggests the existence of one or more disk-shaping physical mechanisms. Possible scenarios, compatible with our findings, involve the presence inside the disk of a yet undetected planet of several Jupiter masses and the system interaction with the surroundings by means of gas cloudlet capture or flybys. Further observations with JWST/MIRI or ALMA (gas kinematics) could shed more light on these.
description: Accepted for publication on A&A. 14 + 5 pages, 9 + 7 figures (text + appendix)
Microlejeunea victoriensis D. J. Carr
Creators: name: Söderström, Lars
name: Hagborg, Anders
name: Konrat, Matt Von
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Bryophyta
Jungermanniopsida
Porellales
Lejeuneaceae
Microlejeunea
Microlejeunea victoriensis

description: Microlejeunea victoriensis D.J.Carr,
Proc. Roy. Soc. Victoria 117: 322, 2005 (see Carr 2005). “ Microlejeunia ”
TYPE: “ Holotype. D.J. Carr and S.G.M Carr, on the bark of trees (Banksia serrata) at Wilsons Promontory. Victoria. November 1954. Herb. Melb”.
description: Published as part of Söderström, Lars, Hagborg, Anders & Konrat, Matt Von, 2014, Early Land Plants Today: Index of Liverworts & Hornworts 2011 - 2012, pp. 61-85 in Phytotaxa 170 (2) on page 72, DOI: 10.11646/phytotaxa.170.2.1, http://zenodo.org/record/4779611
Генетические аспекты развития диабетической фетопатии
Creators: name: Папышева Ольга Виуленовна
name: Маяцкая Татьяна Александровна
Publisher: name: Акушерство и гинекология: Новости. Мнения. Обучения
Year: 2019
Subjects: гестационный сахарный диабет
диабетическая фетопатия
PGC1α
АСЕ
DRD2

description: Цель – выявление причастности полиморфизмов генов PGC1α, АСЕ и DRD2 к развитию ДФ и нарушениям углеводного обмена у новорожденных от матерей с гестационным сахарным диабетом (ГСД). Материал и методы. Нами обследованы 107 беременных и их новорожденных, которых подразделили на 3 группы: 1-я – инсулинопотребный ГСД (37); 2-я – ГСД, не требующий инсулина (39); 3-я – контроль (31). У всех пациенток проведено генотипирование по генам PGC1α, АСЕ и DRD2, а также изучены параметры углеводного обмена. Результаты. Полиморфизмы генов PGC1α, АСЕ и DRD2 были причастны к нарушениям углеводного обмена у беременных с ГСД, но не позволили идентифицировать тип диабета (инсулинопотребный или диетозависимый) и не влияли на вероятность развития ДФ. Диабетогенные аллели G (гена PGC1α), I (АСЕ) и Т (DRD2) реже встречались у детей с ДФ, чем без нее. У плодов-носителей диабетогенного генотипа Gly/ Gly по гену PGC1α максимально снижались уровни HbA1c по сравнению с носителями Gly/Ser и Ser/Ser. Выводы. Полиморфизмы генов PGC1α, АСЕ, причастны к нарушениям углеводного обмена у беременных с ГСД. Диабетогенные аллели G (гена PGC1α), I (АСЕ) и Т (DRD2) плода на внутриутробном этапе развития выполняют защитную функцию.
Improved Measurement of cal{B}(D^+ --> mu^+ nu) and the Pseudoscalar Decay Constant f_{D^+}
Creators: name: Artuso, M.
name: Collaboration, CLEO
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We extract a relatively precise value for the decay constant of the D+ meson by measuring B(D+ -> mu+ nu)=(4.40 +/- 0.66 {+0.09}{-0.12}) x 10^{-4}, using 281 inverse-pb of data taken on the psi(3770) resonance with the CLEO-c detector. We find fD+=(222.6 +/- 16.7 {+2.8}{-3.4}) MeV, and compare with current theoretical calculations. We also set a 90% confidence upper limit on B(D+ -> e+ nu)<2.4 x 10^{-5} which limits contributions from non-standard model physics.
description: 9 pages postscript,also available through http://www.lns.cornell.edu/public/CLNS/2005/, Submitted to PRL
An interacting-agent model of financial markets from the viewpoint of nonextensive statistical mechanics
Creators: name: Kaizoji, Taisei
Publisher: name: arXiv
Year: 2006
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Trading and Market Microstructure (q-fin.TR)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: In this paper we present an interacting-agent model of stock markets. We describe a stock market through an Ising-like model in order to formulate the tendency of traders getting to be influenced by the other traders' investment attitudes [1], and formulate the traders' decision-making regarding investment as the maximum entropy principle for nonextensive entropy. We demonstrate that the equilibrium probability distribution function of the traders' investment attitude is the {\it q-exponential distribution}. We also show that the power-law distribution of the volatility of price fluctuations, which is often demonstrated in empirical studies, can be explained naturally by our model which is based on the collective crowd behavior of many interacting agents.
description: 7 pages, forthcoming into Physica A (2006)
[Brev til DKNVS]
Creators: name: Brummer, Fr.
name: Det Kongelige Norske Videnskabers Selskab (DKNVS)
Publisher: name: Unknown
Year: 1813

description: Oversender et manuskript
description: Tre ark. Polydoc nr. 1: 1143. Polydoc nr. 2: 541.
A Photometric in-depth look at the core-collapsed globular cluster NGC 6284
Creators: name: Deras, Dan
name: Cadelano, Mario
name: Lanzoni, Barbara
name: Ferraro, Francesco R.
name: Pallanca, Cristina
name: Dalessandro, Emanuele
name: Mucciarelli, Alessio
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: High-resolution Hubble Space Telescope (\textit{HST}) optical observations have been used to perform the deepest photometric study of the poorly studied Galactic globular cluster NGC 6284. The deep colour-magnitude diagram (CMD) that we obtained reaches 6 magnitudes below the main sequence turn-off. We provide the first determination of the gravitational centre ($C_{\rm grav}$) and density profile of the system from resolved stars. $C_{\rm grav}$ is significantly offset (by $1.5-3''$) from the values in the literature. The density profile shows the presence of a steep central cusp, unambiguously indicating that the cluster experienced the core-collapse phase. Updated values of the structural parameters and relaxation times of the system are provided. We also constructed the first high-resolution reddening map in the cluster direction, which allowed us to correct the evolutionary sequences in the CMD for the effects of differential reddening. Isochrone fitting to the corrected CMD provided us with new estimates of the cluster age, average colour excess, metallicity, and distance. We find an absolute age of $13.3 \pm 0.4$ Gyr, an average colour excess $E(B-V) = 0.32 \pm 0.01$, a metallicity [Fe/H]$= -1.36 \pm 0.01$, and a true distance modulus $(m-M)_0 = 15.61 \pm 0.04$ that sets the cluster distance at $13.2 \pm 0.2$ kpc from the Sun. The superb quality of the CMD allowed a clear-cut identification of the Red Giant Branch (RGB) bump, which is clearly distinguishable along the narrow RGB. The absolute magnitude of this feature turns out to be $\sim 0.2$ mag fainter than previous identification.
description: 11 pages, 9 figures, 2 tables. Accepted for publication in A&A
PHENIX Measurement of Particle Yields at High pT with Respect toReaction Plane in Au+Au Collisions at sqrt(s) = 200 GeV
Creators: name: Winter, David
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The PHENIX Run 4 Au+Au dataset provides a powerful opportunity for exploring the angular anisotropy of identified particle yields at high pT. Complementing traditional v2 measurements, we present pi0 yields as a function of angle with reaction plane, up to pT 10 GeV/c. The centrality dependence of the angular anisotropy allows us to probe the density and path-length dependence of the energy loss of hard-scattered partons. We will discuss various mechanisms for particle production in this high pT region.
description: Proceedings from the Quark Matter 2005 Conference
Agricultural Policy Reform and Structural Adjustment: Historical Evidence from Korean Experience
Creators: name: Kim, Hanho
name: Lee, Yong-Kee
name: Kim, Hanho
name: Lee, Yong-Kee
Publisher: name: Unknown
Year: 2003
Subjects: subject: Agricultural and Food Policy
subject: direct payment
subject: market price support(MPS)
subject: producer support estimate(PSE)
subject: rice monoculture
subject: two-tier price scheme

description: Korean agriculture has been facing several structural problems resulting from rapid structural changes since 1960's, some of which are preventing a smooth policy reform in accordance with the WTO regime. Political burden from rice monoculture, policy ineffectiveness from too large farm employment, and inflexibility in policy options from high dependency of farm household income on farm income are pointed out and discussed in detail.
Age-dating the young open cluster UBC 1 with g-mode asteroseismology, gyrochronology, and isochrone fitting
Creators: name: Fritzewski, D. J.
name: Van Reeth, T.
name: Aerts, C.
name: Van Beeck, J.
name: Gossage, S.
name: Li, G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: UBC 1 is an open cluster discovered in Gaia data and located near the edge of the Transiting Exoplanet Survey Satellite's (TESS) continuous viewing zone. We aim to provide age constraints for this poorly studied open cluster from the combination of gravity-mode (g-mode) asteroseismology, gyrochronology, and isochrone fitting. We established the members of UBC 1 from a spatial-kinematic filtering and estimate the cluster age and its parameters. Firstly, we fitted rotating isochrones to the single star cluster sequence. Secondly, using TESS time-series photometry, we explored the variability of the upper main sequence members and identified potential g-mode pulsators. For one star, we found a clear period spacing pattern that we used to deduce the buoyancy travel time, the near-core rotation rate, and an asteroseismic age. For a third independent age estimate, we employed the rotation periods of low-mass members of UBC 1. Based on isochrone fitting, we find $\log t = 8.1\pm0.4$, where the large uncertainty occurs because UBC 1 does not host evolved stars. From asteroseismology of one g-mode pulsator, we find a constrained age of $\log t= 8.24^{+0.43}_{-0.14}$. From gyrochronology based on 17 cool star cluster members, we estimate $\log t = 8.35^{+0.16}_{-0.25}$. Combined, all three methods lead to a consistent age in the range of 150-300 Myr. Our results show that even a single cluster member with identified g modes can improve age-dating of young open clusters. Combining gyrochronology of low-mass members with asteroseismology of intermediate-mass members is a powerful tool for young open cluster modelling, including high-precision age-dating.
description: Accepted to A&A, 14+4 pages, 13+4 figures, 2+1 table
Waiting-time distribution for a stock-market index
Creators: name: Lee, Jae Woo
name: Lee, Kyoung Eun
name: Rikvold, Per Arne
Publisher: name: arXiv
Year: 2005
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We investigate the waiting-time distribution of the absolute return in the Korean stock-market index KOSPI. We define the waiting time as a time interval during which the normalized absolute return remains continuously below a threshold $r_c$. Through an exponential bin plot, we observe that the waiting-time distribution shows power-law behavior, $p_f (t) \sim t^{-β}$, for a range of threshold values. The waiting-time distribution has two scaling regimes, separated by the crossover time $t_c \approx 200$ min. The power-law exponents of the waiting-time distribution decrease when the return time $Δt$ increases. In the late-time regime, $t > t_c$, the power-law exponents are independent of the threshold to within the error bars for fixed return time.