cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Peramivir binding affinity with influenza A neuraminidase and research on its mutations using an induced-fit docking approach
Creators: name: V.K. Tran-Nguyen
name: M.T. Le
name: T.D. Tran
name: V.D. Truong
name: K.M. Thai
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Influenza A virus (IAV) has caused epidemic infections worldwide, with many strains resistant to inhibitors of a surface protein, neuraminidase (NA), due to point mutations on its structure. A novel NA inhibitor named peramivir was recently approved, but no exhaustive computational research regarding its binding affinity with wild-type and mutant NA has been conducted. In this study, a thorough investigation of IAV-NA PDB entries of 9 subtypes is described, providing a list of residues constituting the protein-ligand binding sites. The results of induced-fit docking approach point out key residues of wild-type NA participating in hydrogen bonds and/or ionic interactions with peramivir, among which Arg 368 is responsible for a peramivir-NA ionic interaction. Mutations on this residue greatly reduced the binding affinity of peramivir with NA, with 3 mutations R378Q, R378K and R378L (NA6) capable of deteriorating the docking performance of peramivir by over 50%. 200 compounds from 6-scaffolds were docked into these 3 mutant versions, revealing 18 compounds giving the most promising results. Among them, CMC-2012-7-1527-56 (benzoic acid scaffold, IC50 = 32 nM in inhibitory assays with IAV) is deemed the most potential inhibitor of mutant NA resisting both peramivir and zanamivir, and should be further investigated.
Additional file 1 of Revealing role of epigenetic modifiers and DNA oxidation in cell-autonomous regulation of Cancer stem cells
Creators: name: Ferrer-Diaz, Alejandra I.
name: Sinha, Garima
name: Petryna, Andrew
name: Gonzalez-Bermejo, Ruth
name: Kenfack, Yannick
name: Adetayo, Oluwadamilola
name: Patel, Shyam A.
name: Hooda-Nehra, Anupama
name: Rameshwar, Pranela
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Fig. S1. Generation of BCCs, knockdown for KMT2B. (A) Experimental design: BCCs were stably transfected with pOct4a-dsRed and transduced with the KMT2B-GFP tagged shRNA at a multiplicity of infection of 1:50,000. The image was created with BioRender. (B) Western blot shows knockdown efficiency in clones A and C. (C) Representative images demonstrate transduction efficiency with scramble and KMT2B shRNA compared to wild-type MDA-MB-231. Fig. S2. Generation of BCCs, knockdown for KMT2D (A) Experimental design: MDA-MB-231 expressing Oct4a-dsRed and T47D (not shown) were transduced with KMT2D-GFP tagged shRNA with an MOI of 1:50,000. The image was created with BioRender. (B) Representative images show transduction efficiency with scramble and KMT2B shRNA compared to untransfected MDA-MB-231. Fig. S3. Inhibition of H3K4 methylation decreases BCC viability. (A) Experimental design: BCCs were exposed to WDR5–0103 for 48 h. (B) MDA-MB-231 BCCs were exposed to multiple doses (5 μg/ml, 10 μg/ml, and 20 μg/ml) of WDR5–0103 for 48 h, and viability was assessed with Trypan blue exclusion. (C) Viable MDA-MB-231 BCCs were counted after exposure to WDR5–0103 (10 μg/ml) by Trypan blue staining. Each experiment was repeated thrice, where *p < 0.05 was considered significant. Fig. S4. KMT2B knockdown activates genes linked to the migration of BCC lines. IPA network shows upregulation of genes related to the migration of BCCs upon KMT2B knockdown. Fig. S5. KMT2D knockdown promotes the activation of genes involved in BCC migration. IPA analysis using the RNA-seq data shows that KMT2D knockdown upregulates genes implicated in BCC migration. Fig. S6. KMT2B knockdown reduces chemotherapy resistance in BCCs. In silico analyses illustrate that KMT2B knockdown inhibits chemotherapy resistance in BCCs. Fig. S7. KMT2D knockdown downregulates genes involved in chemotherapy resistance. IPA network shows that KMT2D knockdown reduces chemotherapy resistance in BCCs. Fig. S8. Orthotopic route of BC dormancy in bone marrow. MDA-MB-231 BCCs with pOct4a-GFP (5 × 105) were injected into the mammary fat pad of female (6 weeks) nude BALB/c. After 1 week, the mice were euthanized, and the femurs were harvested and scraped to evaluate the presence of BCCs. Shown is the fluorescence microscopy for GFP cells in the femurs of two mice. Representative image of a femur that was not injected with BCCs is shown at left. The slides were imaged with the EVOS FL AUTO 2 microscope at a magnification of 200X.
Off-the-grid Recovery of Time and Frequency Shifts with Multiple Measurement Vectors
Creators: name: Safari, Maral
name: Daei, Sajad
name: Haddadi, Farzan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We address the problem of estimating time and frequency shifts of a known waveform in the presence of multiple measurement vectors (MMVs). This problem naturally arises in radar imaging and wireless communications. Specifically, a signal ensemble is observed, where each signal of the ensemble is formed by a superposition of a small number of scaled, time-delayed, and frequency shifted versions of a known waveform sharing the same continuous-valued time and frequency components. The goal is to recover the continuous-valued time-frequency pairs from a small number of observations. In this work, we propose a semidefinite programming which exactly recovers $s$ pairs of time-frequency shifts from $L$ regularly spaced samples per measurement vector under a minimum separation condition between the time-frequency shifts. Moreover, we prove that the number $s$ of time-frequency shifts scales linearly with the number $L$ of samples up to a log-factor. Extensive numerical results are also provided to validate the effectiveness of the proposed method over the single measurement vectors (SMVs) problem. In particular, we find that our approach leads to a relaxed minimum separation condition and reduced number of required samples.
description: Suggestions of Professor Reinhard Heckel have been applied
Corixa dentipes Thomson 1869
Creators: name: Fent, Meral
name: Kment, Petr
name: Çamur-Elipek, Belgin
name: Kirgiz, Timur
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Corixidae
Corixa
Corixa dentipes

description: Corixa dentipes Thomson, 1869
 Asian Turkey. Kiritshenko (1918), Hoberlandt (1952a, revised!), Jansson (1986a, in map as revised), Jansson (1995), Önder et al. (2006), Topkara et al. (2009), Dursun (2011).
 Turkey (not distinguished). Stichel (1955), Kıyak & Özsaraç (2001), Kanyukova (2006).
 General distribution. Northern, western, Central, and eastern Europe, Siberia, Anatolia, Transcaucasia, Asian part of Kazakhstan, Uzbekistan, Tajikistan, and northern China (Jansson 1995, Jorigtoo & Nonnaizab 1996, Kanyukova 2006).
 Identification. Jansson (1986a), Kanyukova (2006).
description: Published as part of Fent, Meral, Kment, Petr, Çamur-Elipek, Belgin & Kirgiz, Timur, 2011, Annotated catalogue of Enicocephalomorpha, Dipsocoromorpha, Nepomorpha, Gerromorpha, and Leptopodomorpha (Hemiptera: Heteroptera) of Turkey, with new records 2856, pp. 1-84 in Zootaxa 2856 (1) on page 16, DOI: 10.11646/zootaxa.2856.1.1, http://zenodo.org/record/5286719
Adaptation of farm-households to increasing climate variability in Ethiopia: Bioeconomic modeling of innovation diffusion and policy interventions
Creators: name: Berger, Thomas
name: Berger, Thomas
Publisher: name: Unknown
Year: 2015
Subjects: subject: Environmental Economics and Policy
subject: Food Security and Poverty
subject: food security
subject: climate impacts
subject: mixed rain-fed agriculture
subject: multi-agent systems

description: G22, L25, Q12, Q14
Testing the effect of firm performance on growth for the Chilean agribusiness
Creators: name: Brenes-Munoz, Thelma
name: Brenes-Munoz, Thelma
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agricultural and Food Policy
subject: Research and Development/Tech Change/Emerging Technologies
subject: firm growth
subject: technical efficiency
subject: quantile regression
subject: panel data
subject: fixed effects

description: Previous studies of the industrial organization field find that the relationship between firm performance and growth is weak. The objective of this paper is to test this relationship at different quantiles of the firm growth distribution. We also explore the effect of technology gaps and export status on growth. For this, we use Penalized Quantile Regression with Fixed Effects on 420 Chilean agribusiness firms. Key results show that performance, measured as technical efficiency, has a significant and heterogeneous impact on revenue growth. The effect is stronger on slow growing firms: one point increase in technical efficiency increases revenue growth by 1.2 % at the 0.10 quantile, the effect is 0.4 % at the 0.90 quantile. Hence, two key aspects shall be considered in future studies of firm growth and performance: first, to use adequate indicators for performance which capture the entirety of the production process, and second, to consider the non-linearity of their relationship.
title: Хоровое исполнительство
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2025

description: В учебном пособии представлены основные аспекты теории и практики вокально-хоровой работы с певческим коллективом. Рассматриваются вопросы организации и проведения учебно-репетиционного процесса по хоровому исполнительству. На основе обобщения опыта вокальной работы сделаны методические выводы, позволяющие будущим педагогам периода детства понимать сущность и значение различных подходов к обучению пению и взаимодействию с детским хоровым коллективом. Уделяется внимание общим вопросам дирижирования, приводятся схемы дирижирования, даны рекомендации для самостоятельных занятий студентов по дирижированию. Учебное пособие может служить переходной ступенью к самостоятельному поиску дополнительного материала по изучаемой проблеме, проведению самостоятельных исследований в ракурсе практической работы с детским хоровым коллективом. Подготовлено с учетом требований Федерального государственного образовательного стандарта высшего образования, предъявляемым к изучению дисциплины «Практикум по музыкальному (хоровому) исполнительству». Учебное пособие направлено на совершенствование и повышение эффективности учебного процесса подготовки бакалавров по направлениям «Педагогическое образование (с двумя профилями подготовки)» (профиль «Начальное образование и дошкольное образование») и «Психолого-педагогическое образование» (профили «Психология и педагогика дошкольного образования», «Психология и педагогика начального образования»). Издание также будет полезно студентам укрупненной группы специальностей и направлений подготовки «Музыкальное искусство» при изучении дисциплины «Хоровое исполнительство», педагогам периода детства образовательных организаций и центров эстетического развития детей.
Charged Complexity and the Thermofield Double State
Creators: name: Chapman, Shira
name: Chen, Hong Zhe
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We establish a systematic framework for studying quantum computational complexity of Gaussian states of charged systems based on Nielsen's geometric approach. We use this framework to examine the effect of a chemical potential on the dynamics of complexity. As an example, we consider the complexity of a charged thermofield double state constructed from two free massive complex scalar fields in the presence of a chemical potential. We show that this state factorizes between positively and negatively charged modes and demonstrate that this fact can be used to relate it, for each momentum mode separately, to two uncharged thermofield double states with shifted temperatures and times. We evaluate the complexity of formation for the charged thermofield double state, both numerically and in certain analytic expansions. We further present numerical results for the time dependence of complexity. We compare various aspects of these results to those obtained in holography for charged black holes.
description: version published in JHEP, presentation improved, results unchanged, 54 pages, 10 figures
Corixa jakowleffi Horvath 1880
Creators: name: Fent, Meral
name: Kment, Petr
name: Çamur-Elipek, Belgin
name: Kirgiz, Timur
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Corixidae
Corixa
Corixa jakowleffi

description: Corixa jakowleffi Horváth, 1880
 Material examined. ASIAN TURKEY: Konya province: Konya, 31.viii.1947, 4 ♂♂ 23 ♀♀, Exp. N. Mus. ČSR lgt., P. Kment det. (NMPC).
 Asian Turkey. Hoberlandt (1952a, as C. panzeri (partim) and C. affinis (partim)), Seidenstücker (1957, as C. jakovlevi), Seidenstücker (1959, as C. jakowlewi), Jansson (1986a, in map as unrevised), Özesmi & Önder (1988), Jansson (1995), Önder et al. (2006); this paper.
 Turkey (not distinguished). Nieser & Moubayed (1985), Kıyak & Özsaraç (2001), Kanyukova (2006).
 General distribution. South European Territory of Russia, Georgia, Azerbaijan, Anatolia, Israel, Iraq, Iran, and Central Asia (Jansson 1995, Linnavuori & Hosseini 2000).
 Comment. The following specimens from locality ‘Konya’, 4 ♂♂ 8 ♀♀ identified as C. panzeri, and 15 ♀♀ identified as C. affinis, both by Hoberlandt (1952a), belong in fact to C. jakowleffi (P. Kment revid.).
 Identification. Jaczewski (1962), Jansson (1986a), Linnavuori & Hosseini (2000), Kanyukova (2006).
description: Published as part of Fent, Meral, Kment, Petr, Çamur-Elipek, Belgin & Kirgiz, Timur, 2011, Annotated catalogue of Enicocephalomorpha, Dipsocoromorpha, Nepomorpha, Gerromorpha, and Leptopodomorpha (Hemiptera: Heteroptera) of Turkey, with new records 2856, pp. 1-84 in Zootaxa 2856 (1) on pages 16-17, DOI: 10.11646/zootaxa.2856.1.1, http://zenodo.org/record/5286719
Efficient broadband infrared absorbers based on core-shell nanostructures
Creators: name: Parsamyan, Henrik A.
name: Nerkararyan, Khachatur V.
name: Bozhevolnyi, Sergey I.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We suggest to exploit dielectric-metal core-shell nanostructures for efficient resonant and yet broadband absorption of infrared radiation with deeply subwavelength configurations. Realizing that nanostructures would efficiently absorb radiation only when their dielectric properties match those of the environment and making use of the effective medium approach, we develop the design strategy using core-shell nanostructures with very thin shells made of poor metals, i.e., metals having real and imaginary parts of their dielectric permittivities of the same order of magnitude. Analyzing in detail spherical and cylindrical core-shell nanostructures, we demonstrate that the resonant infrared absorption can be not only very efficient, i.e., with the absorption cross sections exceeding geometrical ones, but also broadband with the spectral width being of the order of the resonant wavelength. We obtain simple analytical expressions for the absorption resonances in spherical and cylindrical configurations that allow one to quickly identify the configuration parameters ensuring strong infrared absorption in a given spectral range. Relations to effective medium parameters obtained by the internal homogenization are established and discussed. We believe that our results can be used as practical guidelines for realization of efficient broadband infrared absorbers of subwavelength sizes desirable in diverse applications.
description: 10 pages, 4 figures, 29 references
Asymptotics for the nodal components of non-identically distributed monochromatic random waves
Creators: name: Enciso, Alberto
name: Peralta-Salas, Daniel
name: Romaniega, Álvaro
Publisher: name: arXiv
Year: 2019
Subjects: subject: Spectral Theory (math.SP)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We study monochromatic random waves on $\mathbb{R}^n$ defined by Gaussian variables whose variances tend to zero sufficiently fast. This has the effect that the Fourier transform of the monochromatic wave is an absolutely continuous measure on the sphere with a suitably smooth density, which connects the problem with the scattering regime of monochromatic waves. In this setting, we compute the asymptotic distribution of the nodal components of random monochromatic waves, showing that the number of nodal components contained in a large ball $B_R$ grows asymptotically like $R/π$ with probability $p_n>0$, and is bounded uniformly in $R$ with probability $1-p_n$ (which is positive if and only if $n \geq 3$). In the latter case, we show the existence of a unique noncompact nodal component. We also provide an explicit sufficient stability criterion to ascertain when a more general Gaussian probability distribution has the same asymptotic nodal distribution law.
Two-body collisions in the time-of-flight dynamics of lattice Bose superfluids
Creators: name: Tenart, Antoine
name: Carcy, Cécile
name: Cayla, Hugo
name: Bourdel, Thomas
name: Mancini, Marco
name: Clément, David
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate two-body collisions occurring during the time-of-flight expansion of interacting three-dimensional lattice Bose superfluids. The number of collisions is extracted from the observed s-wave scattering halos located between the diffraction peaks of the superfluids. These faint halos can be monitored thanks to the large dynamical range in densities associated with detecting individual metastable Helium atoms. We monitor the number of collisions as a function of the total atom number and of the amplitude of the lattice, in a regime where the number of trapped atoms per lattice site is large. In addition, we introduce a classical model of collisions that quantitatively describes the experiment without adjustable parameters. Finally, the present work validates quantitatively the assumption of a ballistic expansion when investigating the Bose-Hubbard Hamiltonian with a unity occupation of the lattice.
description: 7 pages, 4 figures
Corixa panzeri Fieber 1848
Creators: name: Fent, Meral
name: Kment, Petr
name: Çamur-Elipek, Belgin
name: Kirgiz, Timur
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Corixidae
Corixa
Corixa panzeri

description: Corixa panzeri Fieber, 1848
 Material examined. EUROPEAN TURKEY: Edirne province: Enez—Gala Gölü [lake] (loc. 10), 5 ♂♂ 1 ♀, M. Fent det. (TUET).
 European Turkey. This paper. First record from Turkish Thrace.
 Asian Turkey. Chicote (1882, Corisa Panzeri), Hoberlandt (1952a, revised!), Jansson (1986a, in map as revised), Wagner (1966), Yıldırım et al. (1999), Balık et al. (2006), Önder et al. (2006), Dursun (2011).
 Turkey (not distinguished). Stichel (1955), Kıyak & Özsaraç (2001).
 General distribution. Distributed in western, Central, southern, and eastern Europe (mostly along the sea coasts, with rather isolated area in Pannonian lowland in Central Europe), North Africa, Anatolia, Georgia, Azerbaijan, Iran, and Tajikistan (Jansson 1986a, 1995; Protić 1998; Rabitsch & Zettel 2000; Dolmen 2004; Straka et al. 2009; Kment & Beran 2011).
 Comment. From the material examined by Hoberlandt (1952a) as C. panzeri, 4 ♂♂ 8 ♀♀ from locality ‘Konya’ belong to C. jakowleffi, and 1 ♀ from ‘Kızılviran’ belongs to C. affinis (P. Kment revid.); only the single female from ‘Emir gölü’ seems to be true C. panzeri; however, identification of females is problematical.
 Identification. Jansson (1986a), Linnavuori & Hosseini (2000), Kanyukova (2006).
description: Published as part of Fent, Meral, Kment, Petr, Çamur-Elipek, Belgin & Kirgiz, Timur, 2011, Annotated catalogue of Enicocephalomorpha, Dipsocoromorpha, Nepomorpha, Gerromorpha, and Leptopodomorpha (Hemiptera: Heteroptera) of Turkey, with new records 2856, pp. 1-84 in Zootaxa 2856 (1) on page 17, DOI: 10.11646/zootaxa.2856.1.1, http://zenodo.org/record/5286719
Synchronization of oscillators with long range interaction: phase transition and anomalous finite size effects
Creators: name: Maródi, M.
name: d'Ovidio, F.
name: Vicsek, T.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Synchronization in a lattice of a finite population of phase oscillators with algebraically decaying, non-normalized coupling is studied by numerical simulations. A critical level of decay is found, below which full locking takes place if the population contains a sufficiently large number of elements. For large number of oscillators and small coupling constant, numerical simulations and analytical arguments indicate that a phase transition separating synchronization from incoherence appears at a decay exponent value equal to the number of dimensions of the lattice. In contrast with earlier results on similar systems with normalized coupling, we have indication that for the decay exponent less than the dimensions of the lattice and for large populations, synchronization is possible even if the coupling is arbitarily weak. This finding suggests that in organisms interacting through slowly decaying signals like light or sound, collective oscillations can always be established if the population is sufficiently large.
description: 15 pages, 12 figures, submitted to Phys. Rev. E; Text slightly changed; References added; Fig. 9 updated
Partition function zeros of the Q-state Potts model on the simple-cubic lattice
Creators: name: Kim, Seung-Yeon
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The $Q$-state Potts model on the simple-cubic lattice is studied using the zeros of the exact partition function on a finite lattice. The critical behavior of the model in the ferromagnetic and antiferromagnetic phases is discussed based on the distribution of the zeros in the complex temperature plane. The characteristic exponents at complex-temperature singularities, which coexist with the physical critical points in the complex temperature plane for no magnetic field ($H_q=0$), are estimated using the low-temperature series expansion. We also study the partition function zeros of the Potts model for nonzero magnetic field. For $H_q>0$ the physical critical points disappear and the Fisher edge singularities appear in the complex temperature plane. The characteristic exponents at the Fisher edge singularities are calculated using the high-field, low-temperature series expansion. It seems that the Fisher edge singularity is related to the Yang-Lee edge singularity which appears in the complex magnetic-field plane for $T>T_c$.
description: 26 pages, 4 figures
PlanAlyzer: Assessing Threats to the Validity of Online Experiments
Creators: name: Tosch, Emma
name: Bakshy, Eytan
name: Berger, Emery D.
name: Jensen, David D.
name: Moss, J. Eliot B.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Online experiments are ubiquitous. As the scale of experiments has grown, so has the complexity of their design and implementation. In response, firms have developed software frameworks for designing and deploying online experiments. Ensuring that experiments in these frameworks are correctly designed and that their results are trustworthy---referred to as *internal validity*---can be difficult. Currently, verifying internal validity requires manual inspection by someone with substantial expertise in experimental design. We present the first approach for statically checking the internal validity of online experiments. Our checks are based on well-known problems that arise in experimental design and causal inference. Our analyses target PlanOut, a widely deployed, open-source experimentation framework that uses a domain-specific language to specify and run complex experiments. We have built a tool, PlanAlyzer, that checks PlanOut programs for a variety of threats to internal validity, including failures of randomization, treatment assignment, and causal sufficiency. PlanAlyzer uses its analyses to automatically generate *contrasts*, a key type of information required to perform valid statistical analyses over experimental results. We demonstrate PlanAlyzer's utility on a corpus of PlanOut scripts deployed in production at Facebook, and we evaluate its ability to identify threats to validity on a mutated subset of this corpus. PlanAlyzer has both precision and recall of 92% on the mutated corpus, and 82% of the contrasts it automatically generates match hand-specified data.
description: 30 pages, hella long
Efficient phonon cascades in WSe 2 monolayers
Creators: name: Paradisanos, Ioannis
name: Wang, Gang
name: Alexeev, Evgeny M.
name: Cadore, Alisson R.
name: Marie, Xavier
name: Ferrari, Andrea C.
name: Glazov, Mikhail M.
name: Urbaszek, Bernhard
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Article
/639/301/357/1018
/639/766/119/995
/140/133
/140/125
/128
article

description: Abstract: Energy relaxation of photo-excited charge carriers is of significant fundamental interest and crucial for the performance of monolayer transition metal dichalcogenides in optoelectronics. The primary stages of carrier relaxation affect a plethora of subsequent physical mechanisms. Here we measure light scattering and emission in tungsten diselenide monolayers close to the laser excitation energy (down to ~0.6 meV). We reveal a series of periodic maxima in the hot photoluminescence intensity, stemming from energy states higher than the A-exciton state. We find a period ~15 meV for 7 peaks below (Stokes) and 5 peaks above (anti-Stokes) the laser excitation energy, with a strong temperature dependence. These are assigned to phonon cascades, whereby carriers undergo phonon-induced transitions between real states above the free-carrier gap with a probability of radiative recombination at each step. We infer that intermediate states in the conduction band at the Λ-valley of the Brillouin zone participate in the cascade process of tungsten diselenide monolayers. This provides a fundamental understanding of the first stages of carrier–phonon interaction, useful for optoelectronic applications of layered semiconductors.
Seroprevalence of herpes simplex virus types 1 and 2 in Nigeria: a systematic review and meta-analyses
Creators: name: Eleazar E. Reward
name: Muo, Sophia O.
name: Ibuchukwu N. A. Orabueze
name: Ike, Anthony C.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: A source of comprehensive information on the prevalence of herpes simplex virus type 1 and 2 (HSV-1 and HSV-2) can help researchers and policymakers address HSV related burden in the society. At the moment, this is not readily available. This study aims to fill this gap by attempting to estimate the seroprevalence of HSV-1 and HSV-2 infections in Nigeria on the basis of published data. A systematic review and meta-analysis including cross-sectional studies on HSV-1 and HSV-2 in Nigeria was conducted. Electronic databases including PubMed/MEDLINE, CENTRAL, African Journals Online (AJOL), ScienceDirect, WHO-Afro Library, WHO-IRIS and African Index Medicus were searched for English Language publications on HSV-1 and HSV-2. Seven relevant publications were identified. Seroprevalence measures of 3 and 23 for HSV-1 and HSV-2, respectively, were extracted. The pooled mean seroprevalences for HSV-1 and HSV-2 were 74.0% (37.4–99.4%) and 63.4% (56.1–70.4%) respectively. The mean seroprevalence of HSV-1 was higher among females, 82.4% (n = 509, CI, 36.6–100.0%), than males, 54.5% (n = 198, CI, 47.6–61.4%). The mean seroprevalence of HSV-2 were 51.8% (n = 1414, CI: 39.4–64.0%) and 86.5% (n = 162, CI: 80.8–91.3%) among healthy and clinical populations, respectively. The study was limited by the paucity of quality studies, variations in diagnostic methods and high heterogeneity in seroprevalence estimates. In conclusion, the seroprevalence of HSV-1 and HSV-2 remain high in Nigeria. Large and representative national epidemiological surveys covering all regions and specific groups are recommended.
Exact stability and instability regions for two-dimensional linear autonomous multi-order systems of fractional-order differential equations
Creators: name: Brandibur, Oana
name: Kaslik, Eva
Publisher: name: arXiv
Year: 2019
Subjects: subject: Dynamical Systems (math.DS)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26A33, 34Dxx

description: Necessary and sufficient conditions are explored for the asymptotic stability and instability of linear two-dimensional autonomous systems of fractional-order differential equations with Caputo derivatives. Fractional-order-dependent and fractional-order-independent stability and instability properties are fully characterized, in terms of the main diagonal elements of the systems' matrix, as well as its determinant.
description: 28 pages, 5 figures
Adaptive Optics Observations of Vega: Eight Detected Sources and Upper Limits to Planetary-Mass Companions
Creators: name: Metchev, Stanimir
name: Hillenbrand, Lynne
name: White, Russel
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: From adaptive optics observations with the Palomar 5-meter telescope we place upper limits on the masses of any planetary companions located between ~30-230 AU away from Vega, where our data are sensitive to depths ranging from H=12.5 mag to H=19.0 mag fainter than Vega itself. Our observations cover a plus-shaped area with two 25"x57" elements, excluding 7"x7" centered on the star. We have identified 2 double and 4 single point sources. These projected companions are 14.9-18.9 mag fainter than Vega, and if physically associated would have masses ranging from 4 to 35 Mjup and orbital radii 170-260 AU. Recent simulations of dusty rings around Vega predict the presence of a perturbing body with mass <2-3 Mjup and orbital radius ~40-100 AU, though more massive (~10 Mjup) planets cannot be excluded. None of the detected objects are this predicted planet. Based on a color-magnitude, spectroscopic, and proper motion analysis, all objects are consistent with being background sources. Given the glare of Vega, a 2 Mjup object near the expected orbital radii would not have been visible at the 5-sigma level in our data, though any >10 Mjup brown dwarf could have been seen at separation >80 AU.
description: 16 pages, 1 table, 4 figures. Accepted for publication in ApJ
Edge theories of 2D fermionic symmetry protected topological phases protected by unitary Abelian symmetries
Creators: name: Ning, Shang-Qiang
name: Wang, Chenjie
name: Wang, Qing-Rui
name: Gu, Zheng-Cheng
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Abelian Chern-Simons theory, characterized by the so-called $K$ matrix, has been quite successful in characterizing and classifying Abelian fractional quantum hall effect (FQHE) as well as symmetry protected topological (SPT) phases, especially for bosonic SPT phases. However, there are still some puzzles in dealing with fermionic SPT(fSPT) phases. In this paper, we utilize the Abelian Chern-Simons theory to study the fSPT phases protected by arbitrary Abelian total symmetry $G_f$. Comparing to the bosonic SPT phases, fSPT phases with Abelian total symmetry $G_f$ has three new features: (1) it may support gapless majorana fermion edge modes, (2) some nontrivial bosonic SPT phases may be trivialized if $G_f$ is a nontrivial extention of bosonic symmetry $G_b$ over $\mathbb{Z}_2^f$, (3) certain intrinsic fSPT phases can only be realized in interacting fermionic system. We obtain edge theories for various fSPT phases, which can also be regarded as conformal field theories (CFT) with proper symmetry anomaly. In particular, we discover the construction of Luttinger liquid edge theories with central charge $n-1$ for Type-III bosonic SPT phases protected by $(\mathbb{Z}_n)^3$ symmetry and the Luttinger liquid edge theories for intrinsically interacting fSPT protected by unitary Abelian symmetry. The ideas and methods used here might be generalized to derive the edge theories of fSPT phases with arbitrary unitary finite Abelian total symmetry $G_f$.
description: 31 pages, 1 table, 4 figures. Common and suggestion are welcome
Hesperocorixa parallela AT
Creators: name: Fent, Meral
name: Kment, Petr
name: Çamur-Elipek, Belgin
name: Kirgiz, Timur
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Corixidae
Hesperocorixa
Hesperocorixa parallela

description: Hesperocorixa parallela (Fieber, 1860)
 Asian Turkey. Hoberlandt (1952a, H. occulta, misidentification; revised!), Seidenstücker (1959, 1963), Önder et al. (1981), Jansson (1986a, in map as revised), Önder et al. (2006), Kıyak et al. (2007a).
 Turkey (not distinguished). Nieser & Moubayed (1985), Kıyak & Özsaraç (2001).
 General distribution. Spain, Italy, Balkan Peninsula, Poland, Ukraine, Transcaucasia, Anatolia, Egypt, Israel, Lebanon, Syria, Iraq, and Iran (Nieser & Moubayed 1985; Jansson 1986a, 1995; Linnavuori & Hosseini 2000; Gogala 2003; Kanyukova 2006).
 Comment. Omitted from Asian Turkey in Jansson (1995).
 Identification. Jansson (1986a), Linnavuori & Hosseini (2000), Kanyukova (2006).
description: Published as part of Fent, Meral, Kment, Petr, Çamur-Elipek, Belgin & Kirgiz, Timur, 2011, Annotated catalogue of Enicocephalomorpha, Dipsocoromorpha, Nepomorpha, Gerromorpha, and Leptopodomorpha (Hemiptera: Heteroptera) of Turkey, with new records 2856, pp. 1-84 in Zootaxa 2856 (1) on page 18, DOI: 10.11646/zootaxa.2856.1.1, http://zenodo.org/record/5286719
Influence of Nonmetal Dopants on Charge Separation of Graphitic Carbon Nitride by Time-Dependent Density Functional Theory
Creators: name: Lin, Tzu-Jen
Publisher: name: arXiv
Year: 2019
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Photocatalysts are crucial materials for green energy production and environmental purification. Non-metal doped graphitic carbon nitride (g-C3N4) has attracted much attention in recent years because of low-cost and desired photocatalytic performance characteristics such as high charge separation efficiency and broad visible light absorption. In this study, we used time-dependent density functional theory and wave function analysis to evaluate the charge separation characteristics of phosphorus-, oxygen- and sulfur-doped g-C3N4 upon photon excitation based on electron-hole pair distances, electron-hole pair overlaps, and charge transfer amounts. The lowest unoccupied molecular orbital of doped heptazine rings was shifted downward to facilitate electron transfer from undoped to doped heptazine rings upon photon excitation. Generally, the phosphorus dopant yielded relatively high charge transfer, high electron-hole pair separations, and low electron-hole overlap compared with the oxygen and sulfur dopants. In a low concentration, the sulfur dopant had the similar performance as the phosphorus dopant did. Furthermore, the phosphorus dopant attracted photon excited electrons, whereas the oxygen and sulfur dopants contributed to electron-hole pair separation. The dopants concentrated in one heptazine ring exhibited high charge separation performance than those dopants distributed among multiple heptazine rings in g-C3N4; the simulation results suggested that doping configurations are more crucial than doping concentrations with respect to charge separation efficiency in nonmetal-doped g-C3N4.
Wigner molecules in quantum dots: a quantum Monte Carlo study
Creators: name: Harju, A.
name: Siljamäki, S.
name: Nieminen, R. M.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study two-dimensional quantum dots using the variational quantum Monte Carlo technique in the weak-confinement limit where the system approaches the Wigner molecule, i.e., the classical solution of point charges in an external potential. We observe the spin-polarization of electrons followed by a smooth transition to a Wigner-molecule-like state as the confining potential is made weaker.
description: 7 pages, 11 figures
Environmental variability supports chimpanzee behavioural diversity
Creators: name: Kalan, Ammie K.
name: Kulik, Lars
name: Arandjelovic, Mimi
name: Boesch, Christophe
name: Haas, Fabian
name: Dieguez, Paula
name: Barratt, Christopher D.
name: Abwe, Ekwoge E.
name: Agbor, Anthony
name: Angedakin, Samuel
name: Aubert, Floris
name: Ayimisin, Emmanuel Ayuk
name: Bailey, Emma
name: Bessone, Mattia
name: Brazzola, Gregory
name: Buh, Valentine Ebua
name: Chancellor, Rebecca
name: Cohen, Heather
name: Coupland, Charlotte
name: Curran, Bryan
name: Danquah, Emmanuel
name: Deschner, Tobias
name: Dowd, Dervla
name: Eno-Nku, Manasseh
name: Michael Fay, J.
name: Goedmakers, Annemarie
name: Granjon, Anne-Céline
name: Head, Josephine
name: Hedwig, Daniela
name: Hermans, Veerle
name: Jeffery, Kathryn J.
name: Jones, Sorrel
name: Junker, Jessica
name: Kadam, Parag
name: Kambi, Mohamed
name: Kienast, Ivonne
name: Kujirakwinja, Deo
name: Langergraber, Kevin E.
name: Lapuente, Juan
name: Larson, Bradley
name: Lee, Kevin C.
name: Leinert, Vera
name: Llana, Manuel
name: Marrocoli, Sergio
name: Meier, Amelia C.
name: Morgan, Bethan
name: Morgan, David
name: Neil, Emily
name: Nicholl, Sonia
name: Normand, Emmanuelle
name: Ormsby, Lucy Jayne
name: Pacheco, Liliana
name: Piel, Alex
name: Preece, Jodie
name: Robbins, Martha M.
name: Rundus, Aaron
name: Sanz, Crickette
name: Sommer, Volker
name: Stewart, Fiona
name: Tagg, Nikki
name: Tennie, Claudio
name: Vergnes, Virginie
name: Welsh, Adam
name: Wessling, Erin G.
name: Willie, Jacob
name: Wittig, Roman M.
name: Yuh, Yisa Ginath
name: Zuberbühler, Klaus
name: Kühl, Hjalmar S.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Article
/631/181/1403
/631/601/18
/704/158/856
/141
article

description: Funder: Max-Planck-Gesellschaft (Max Planck Society); doi: https://doi.org/10.13039/501100004189
description: Funder: Heinz L. Krekeler Foundation
description: Abstract: Large brains and behavioural innovation are positively correlated, species-specific traits, associated with the behavioural flexibility animals need for adapting to seasonal and unpredictable habitats. Similar ecological challenges would have been important drivers throughout human evolution. However, studies examining the influence of environmental variability on within-species behavioural diversity are lacking despite the critical assumption that population diversification precedes genetic divergence and speciation. Here, using a dataset of 144 wild chimpanzee (Pan troglodytes) communities, we show that chimpanzees exhibit greater behavioural diversity in environments with more variability — in both recent and historical timescales. Notably, distance from Pleistocene forest refugia is associated with the presence of a larger number of behavioural traits, including both tool and non-tool use behaviours. Since more than half of the behaviours investigated are also likely to be cultural, we suggest that environmental variability was a critical evolutionary force promoting the behavioural, as well as cultural diversification of great apes.
nc-eTAG Specification README
Creators: name: Tsontos, Vardis
Publisher: name: figshare
Year: 2019
Subjects: subject: Data Format
subject: FOS: Computer and information sciences
subject: 80404 Markup Languages
subject: 80306 Open Software
subject: Information Systems
subject: 80604 Database Management
subject: 80301 Bioinformatics Software

description: README for nc-eTAG project space
Serving Recurrent Neural Networks Efficiently with a Spatial Accelerator
Creators: name: Zhao, Tian
name: Zhang, Yaqi
name: Olukotun, Kunle
Publisher: name: arXiv
Year: 2019
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Machine Learning (cs.LG)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: Recurrent Neural Network (RNN) applications form a major class of AI-powered, low-latency data center workloads. Most execution models for RNN acceleration break computation graphs into BLAS kernels, which lead to significant inter-kernel data movement and resource underutilization. We show that by supporting more general loop constructs that capture design parameters in accelerators, it is possible to improve resource utilization using cross-kernel optimization without sacrificing programmability. Such abstraction level enables a design space search that can lead to efficient usage of on-chip resources on a spatial architecture across a range of problem sizes. We evaluate our optimization strategy on such abstraction with DeepBench using a configurable spatial accelerator. We demonstrate that this implementation provides a geometric speedup of 30x in performance, 1.6x in area, and 2x in power efficiency compared to a Tesla V100 GPU, and a geometric speedup of 2x compared to Microsoft Brainwave implementation on a Stratix 10 FPGA.
Pressure and temperature induced red-shift of the sodium D-line during HMX deflagration
Creators: name: Morley, Olivia J.
name: Williamson, David M.
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Article
/639/638/440
/639/638/440/949
/639/301/930/527
article

description: Funder: Emmanuel College Avik Chakravarty Memorial Fund for Physics
description: Funder: AWE Defence Ordnance Safety Group, Science and Technology
description: Abstract: The sodium D-line is often present in optical spectra of combustion due to its high prevalence and emissivity. Collision theory predicts the spectral peak to have a red-shift dependent on pressure, P, and temperature, T. Here we show that the conditions reached during deflagration of octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) permit the red-shift of the sodium D-line to be calibrated to 1.5 GPa. Deflagration at these pressures is achieved using a split Hopkinson pressure bar apparatus, with temperatures of circa 2900 K from the greybody continuum away from spectral features. Lower deflagration pressures, of 0.5 to 0.9 GPa, are achieved in a fallhammer test, with temperatures of circa 4000 K. The red-shift exhibits the predicted PT−0.7 dependence with a constant of proportionality of (950 ± 30) GPa-1 · K0.7 · nm. Using the serendipitous presence of sodium, this optical technique allows for fast measurements of both pressure and temperature from the same light source in one measurement.
A generalized integral equation formulation for pricing American options under regime-switching model
Creators: name: Zheng, Y
name: Zhu, Song-Ping
Publisher: name: University of Wollongong
Year: 2025
Subjects: classificationCode: 40
subject: Engineering
classificationCode: 4903
subject: Numerical and computational mathematics
classificationCode: 49
subject: Mathematical sciences
classificationCode: 4901
subject: Applied mathematics
classificationCode: 4613
subject: Theory of computation

description: In this paper, we present a generalized and highly efficient integral equation formulation for the price of American put options under regime-switching model with a goal of improving computational efficiency in mind, particularly when the number of regimes is large. Our achieved high efficiency is based on a newly proved theorem, which facilitates the decoupling of a system with simultaneously coupled PDEs so that they can be solved recursively at the numerical solution stage. Such a high efficiency is also fueled further by that the integral equation approach being characterized with its excellent trade off between maximizing analytical tractability and minimizing numerical discretization. Upon providing some numerical examples to demonstrate the implementation of the new approach and its efficiency, we anticipate that the very same theorem can be used to reduce the computational burden if other numerical approaches are adopted, for this highly challenging nonlinear problem.
Quantitative estimates for the Bakry-Ledoux isoperimetric inequality
Creators: name: Mai, Cong Hung
name: Ohta, Shin-ichi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: We establish a quantitative isoperimetric inequality for weighted Riemannian manifolds with $\mathrm{Ric}_{\infty} \ge 1$. Precisely, we give an upper bound of the volume of the symmetric difference between a Borel set and a sub-level (or super-level) set of the associated guiding function (arising from the needle decomposition), in terms of the deficit in Bakry-Ledoux's Gaussian isoperimetric inequality. This is the first quantitative isoperimetric inequality on noncompact spaces besides Euclidean and Gaussian spaces. Our argument makes use of Klartag's needle decomposition (also called localization), and is inspired by a recent work of Cavalletti, Maggi and Mondino on compact spaces. Besides the quantitative isoperimetry, a reverse Poincaré inequality for the guiding function that we have as a key step, as well as the way we use it, are of independent interest.
description: 43 pages; v2: minor modifications, to appear in Comment. Math. Helv
Intra-annual density fluctuations (IADFs) in Pinus nigra (J. F. Arnold) at high-elevation in the central Apennines (Italy)
Creators: name: Piermattei, Alma
name: Campelo, Filipe
name: Büntgen, Ulf
name: Crivellaro, Alan
name: Garbarino, Matteo
name: Urbinati, Carlo
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Original Article
Tree Rings
European black pine
Anthropogenic forest limit
Pioneer vs planted
Standardization
Weibull and Chapman functions

description: Abstract: Although wood anatomical features can provide yearly resolved climatic information at sub-seasonal resolution, the occurrence of intra-annual density fluctuations (IADFs) might be triggered by several abiotic factors under different ecological settings. Here, we use information on cambial age and tree-ring width to standardize the frequency of IADFs in European black pines from three different mountain slopes in the central Apennines (Italy). At each site, we sampled isolated 15–30-year pioneer pines above the forest limit, as well as close-grown 40–60-year planted pines at the forest limit. Mainly restricted to the latewood of both pioneer and planted trees, the occurrence of IADFs reveals a significant positive relationship with cambial age and ring width. Although the standardized IADFs are well synchronized between the planted and pioneer pines, the frequency of IADFs in narrow rings was higher in the pioneer pines. Drought conditions in July and August are responsible for the highest IADFs frequency in planted and pioneer pines, respectively. Our study underlines the value of IADFs to obtain a more nuanced understanding of the climatic drivers of wood formation at the intra-annual scale.