cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Farmer Retirement and Disinvestment in the U.S.
Creators: name: Nadolnyak, D.
name: Griffin, B.
name: Hartarska, V.
name: Nadolnyak, D.
name: Griffin, B.
name: Hartarska, V.
Publisher: name: Unknown
Year: 2018
Subjects: Labor and Human Capital

description: One of the major demographic trends in the US is the aging of farm operators and landlords suggesting transition of farm ownership in the form of exit and disinvestment. This coincides with economic pressures on farmers incomes due to recent market volatility. We model retirement age farmers exit/disinvestment as the outcome of intertemporal utility maximization and identify the extent to which economic and demographic factors affect these choices using the Census of Agriculture farm-level data for the 1992-2012 period. Regression results highlight the role of demographic factors. Minority and female farmers are more likely to exit but female operators are less likely to disinvest, while family farms are less likely to exit. High sales farms are less likely to exit but more likely to disinvest possibly targeting a smaller production scale before retirement. The relative size of the non-agricultural economy is negatively associated with exit but positively with disinvestment, while off-farm work reduces exit probability only a little. However, flow economic variables such as return-on-assets and government payments do not seem to impact exit and disinvestment. These findings are largely consistent with the view that mainly demographic factors and size determine farmers decisions to retire, which has important policy implications. Acknowledgement :
Additional file 1 of ACME dissociation: a versatile cell fixation-dissociation method for single-cell transcriptomics
Creators: name: García-Castro, Helena
name: Kenny, Nathan J.
name: Iglesias, Marta
name: Álvarez-Campos, Patricia
name: Mason, Vincent
name: Elek, Anamaria
name: Schönauer, Anna
name: Sleight, Victoria A.
name: Jakke Neiro
name: Aboobaker, Aziz
name: Permanyer, Jon
name: Irimia, Manuel
name: Arnau Sebé-Pedrós
name: Solana, Jordi
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Supplementary Figures S1-11.
Large spin limit of AdS_5 x S^5 string theory and low energy expansion of ferromagnetic spin chains
Creators: name: Kruczenski, M.
name: Ryzhov, A. V.
name: Tseytlin, A. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: By considering AdS_5 x S^5 string states with large angular momenta in S^5 one is able to provide non-trivial quantitative checks of the AdS/CFT duality. A string rotating in S^5 with two angular momenta J_1,J_2 is dual to an operator in N=4 SYM theory whose conformal dimension can be computed by diagonalizing a (generalization of) spin 1/2 Heisenberg chain Hamiltonian. It was recently argued and verified to lowest order in a large J=J_1+J_2 expansion, that the Heisenberg chain can be described using a non-relativistic low energy effective 2-d action for a unit vector field n_i which exactly matches the corresponding large J limit of the classical AdS_5 x S^5 string action. In this paper we show that this agreement extends to the next order and develop a systematic procedure to compute higher orders in such large angular momentum expansion. This involves several non-trivial steps. On the string side, we need to choose a special gauge with a non-diagonal world-sheet metric which insures that the angular momentum is uniformly distributed along the string, as indeed is the case on the spin chain side. We need also to implement an order by order redefinition of the field n_i to get an action linear in the time derivative. On the spin chain side, it turns out to be crucial to include the effects of integrating out short wave-length modes. In this way we gain a better understanding of how (a subsector of) the string sigma model emerges from the dual gauge theory, allowing us to demonstrate the duality beyond comparing particular examples of states with large J.
description: 49 pages. v2,v3: misprints and coefficients in eqs.(2.77),(2.89) corrected; comments about quadratic terms in the effective action added at the end of section 2.3 and section 3
On optimal orientations of complete tripartite graphs
Creators: name: Wong, W. H. W.
name: Tay, E. G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: F.2.2
subject: 05C12, 05C20

description: Given a connected and bridgeless graph $G$, let $\mathscr{D}(G)$ be the family of strong orientations of $G$. The orientation number of $G$ is defined to be $\bar{d}(G):=min\{d(D)|D\in \mathscr{D}(G)\}$, where $d(D)$ is the diameter of the digraph $D$. In this paper, we focus on the orientation number of complete tripartite graphs. We prove a conjecture raised by Rajasekaran and Sampathkumar. Specifically, for $q\ge p\ge 3$, if $\bar{d}(K(2,p,q))=2$, then $q\le{{p}\choose{\lfloor{p/2}\rfloor}}$. We also present some sufficient conditions on $p$ and $q$ for $\bar{d}(K(p,p,q))=2$.
description: 16 pages
Method of multiple internal reflections in description of tunneling evolution through barriers
Creators: name: Olkhovsky, Vladislav S.
name: Maydanyuk, Sergei P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A method of a non-stationary description of tunneling of a particle through the one-dimensional and spherically symmetric rectangular barriers on the basis of analisis of multiple internal reflections of wave packets in relation on the barrier boundaries, named as the Method of multiple internal reflections, is presented at the first time. For the one-dimensional problem the applicability of this method is proved, its specific features are analyzed. For the spherically symmetric problem the amplitudes of the transmitted and reflected wave packets, times of tunneling and reflection in relation to the barrier are calculated using this method. The effect of Hartman-Fletcher is analyzed.
description: 11 pages, 3 figures in EPS format, LaTeX v.2e
Superior Thermoelectric Performance of Textured Ca3Co4−xO9+δ Ceramic Nanoribbons
Creators: name: Maor, Itzhak I.
name: Kruppa, Katharina
name: Rozencweig, Adi
name: Sterzer, Amir
name: Steinbach, Frank
name: Beilin, Vadim
name: Breidenstein, Bernd
name: Shter, Gennady E.
name: Mann‐Lahav, Meirav
name: Feldhoff, Armin
name: Grader, Gideon S.
Publisher: name: Weinheim : Wiley-VCH
Year: 2023
Subjects: subject: electron microscopy
subject: electrospinning
subject: microstructure
subject: nanoribbons
subject: thermoelectric properties
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Calcium cobaltite Ca3Co4−xO9+δ (CCO) is a promising p-type thermoelectric (TE) material for high-temperature applications in air. The grains of the material exhibit strong anisotropic properties, making texturing and nanostructuring mostly favored to improve thermoelectric performance. On the one hand multitude of interfaces are needed within the bulk material to create reflecting surfaces that can lower the thermal conductivity. On the other hand, low residual porosity is needed to improve the contact between grains and raise the electrical conductivity. In this study, CCO fibers with 100% flat cross sections in a stacked, compact form are electrospun. Then the grains within the nanoribbons in the plane of the fibers are grown. Finally, the nanoribbons are electrospun into a textured ceramic that features simultaneously a high electrical conductivity of 177 S cm−1 and an immensely enhanced Seebeck coefficient of 200 µV K−1 at 1073 K are assembled. The power factor of 4.68 µW cm−1 K−2 at 1073 K in air surpasses all previous CCO TE performances of nanofiber ceramics by a factor of two. Given the relatively high power factor combined with low thermal conductivity, a relatively large figure-of-merit of 0.3 at 873 K in the air for the textured nanoribbon ceramic is obtained.
Optical investigation of the charge-density-wave phase transitions in $NbSe_{3}$
Creators: name: Perucchi, A.
name: Degiorgi, L.
name: Thorne, R. E.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have measured the optical reflectivity $R(ω)$ of the quasi one-dimensional conductor $NbSe_{3}$ from the far infrared up to the ultraviolet between 10 and 300 $K$ using light polarized along and normal to the chain axis. We find a depletion of the optical conductivity with decreasing temperature for both polarizations in the mid to far-infrared region. This leads to a redistribution of spectral weight from low to high energies due to partial gapping of the Fermi surface below the charge-density-wave transitions at 145 K and 59 K. We deduce the bulk magnitudes of the CDW gaps and discuss the scattering of ungapped free charge carriers and the role of fluctuations effects.
Microbiological water quality and derived health risks from exposure to ornamental water fountains in the city of Hannover
Creators: name: Carpio Vallejo, Estefania
name: Düker, Urda
name: Meyer, Franziska
name: Berding, Ulrich
name: Nogueira, Regina
Publisher: name: Oxford [u.a.] : Wiley-Blackwell
Year: 2023
Subjects: subject: health risks
subject: ornamental fountains
subject: QMRA
subject: risk of illness/infection
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie

description: Ornamental fountains are attractive urban infrastructures helping cities to cope with global warming, as water sprays have great cooling effects due to evaporative properties; however, exposure to microbiologically impaired water from ornamental fountains during recreational activities may result in adverse health outcomes for the exposed population. This study assesses the microbial water quality of four ornamental water fountains (Blätterbrunnen, Körtingbrunnen, Klaus–Bahlsen–Brunnen, and Marstallbrunnen) and performs a quantitative microbial risk assessment (QMRA) for children using Escherichia coli, Enterococci, and Salmonella to quantify the probability of gastrointestinal illnesses and Pseudomonas aeruginosa to quantify the risk of dermal infections. Samples were collected fortnightly in two campaigns in 2020 and 2021 and processed to determine bacterial concentrations. Data on exposure time were obtained during field observations on the selected fountains; a total of 499 people were observed of which 30% were children. Mean bacterial concentrations ranged from 1.6 × 101 to 6.1 × 102 most probable number (MPN)/100 mL for E. coli, 1.2 × 101–1.2 × 103 MPN/100 mL for Enterococci, 8.6 × 103–3.1 × 105 CFU/100 mL for Salmonella, and 2.5 × 103–3.2 × 104 MPN/100 mL for P. aeruginosa. The results of the QMRA study showed that the USEPA illness rate of 36 NEEAR-gastrointestinal illnesses/1000 was exceeded for Enterococci at the Körtingbrunnen, Klaus–Bahlsen–Brunnen, and Marstallbrunnen fountains and for Salmonella and P. aeruginosa at the Körtingbrunnen fountain, suggesting that exposure to microbiologically contaminated water from ornamental fountains may pose a health risk to children. The scenario analysis shows the importance of keeping low bacterial concentrations in ornamental fountains so that the risk of illness/infection to children does not exceed the USEPA illness rate benchmark.
The Effect of Anisotropic Viscosity on the Nonlinear Kink Instability
Creators: name: Quinn, James
name: MacTaggart, David
name: Simitev, Radostin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The kink instability of magnetohydrodynamics is believed to be fundamental to many aspects of the dynamic activity of the solar atmosphere, such as the initiation of flares and the heating of the solar corona. In this work, we investigate the importance of viscosity on the kink instability. In particular, we focus on two forms of viscosity; isotropic viscosity (independent of the magnetic field) and anisotropic viscosity (with a preferred direction following the magnetic field). Through the detailed analysis of magnetohydrodynamic simulations of the kink instability with both types of viscosity, we show that the form of viscosity has a significant effect on the nonlinear dynamics of the instability. The different viscosities allow for different flow and current structures to develop, thus affecting the behaviour of magnetic relaxation, the formation of secondary instabilities and the Ohmic and viscous heating produced. Our results have important consequences for the interpretation of solar observations of the kink instability.
description: 20 pages
Dinogamasus brevihirtus LeVeque 1930
Creators: name: Hernandes, Fabio A.
name: Huff, Jeremy C.
name: Oconnor, Barry M.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Laelapidae
Dinogamasus
Dinogamasus brevihirtus

description: Dinogamasus brevihirtus LeVeque, 1930: 13;
ex Xylocopa cloti Vachal, 1898 (Hexapoda, Hymenoptera, Apidae), Kisangani (formerly Stanleyville), D.R. Congo, no other data, holotype ♀, paratypes 10 ♀, ACC 31184.
description: Published as part of Hernandes, Fabio A., Huff, Jeremy C. & Oconnor, Barry M., 2011, Catalog of the Acari types deposited in the American Museum of Natural History, New York (Arthropoda: Arachnida), pp. 1-50 in Zootaxa 2936 (1) on page 4, DOI: 10.11646/zootaxa.2936.1.1, http://zenodo.org/record/5284434
Restrictions of smooth functions to a closed subset
Creators: name: Izumi, Shuzo
Publisher: name: arXiv
Year: 2003
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 26E10, 58C05

description: We first provide an approach to the recent conjecture of Bierstone-Milman-Pawlucki on Whitney's old problem on smooth extendability of functions defined on a closed subset of a Euclidean space, using higher order paratangent bundle they introduced. For example, the conjecture is affirmative for classical fractal sets. Next, we give a sharpened form of Spallek's theorem on controllability of flatness by the values on a closed set. The multi-dimensional Vandermonde matrix plays an important role in both cases.
description: 16 pages
Temporal and Spatial Patterning of Esrrb Expression During Cerebellar Development
Creators: name: Tsai, Casper
name: Ramirez, Miguel
name: Robert, Remi
name: Yeung, Joanna
name: FANTOM5 Consortium
name: Goldowitz, D.
Publisher: name: The University of British Columbia
Year: 2019

description: The cerebellum is a part of the brain responsible for fine motor skills such as balance and coordination. Defective cerebellar development can often cause impairment of motor functions. While we have a good understanding of the anatomical changes during cerebellar development, genetic regulation that drives these changes are largely unknown. We previously collected mRNA transcripts from developing mouse cerebellum and sequenced them to obtain gene expression levels at several time points. A gene expression network was then constructed using this data in hopes of identifying important genes during cerebellar development. Among the genes in the network, Estrogen-related receptor beta (Esrrb) was determined through a list of biological criteria to likely be involved in cerebellar development. To understand the role of Esrrb in cerebellar development, we sought to identify the spatial distribution of Esrrb and Essrb-expressing cell-type in the developing cerebellum. In-situ hybridization (ISH) and immunofluorescence staining of Esrrb were performed on embryonic cerebellum to determine the spatial distribution of Esrrb at different time points in cerebellar development. ISH confirmed Esrrb expression in the cerebellum while immunofluorescence localized Esrrb expression to the ventricular zone at early embryonic stages and to the Purkinje cell layer at late embryonic stages. In addition, Esrrb was co-stained with other cell-type specific markers to identify the cell-type of Esrrb-expressing cells. Positive immunofluorescence co-staining with Ptf1a suggested Esrrb expression in GABAergic cells. Furthermore, co-staining with other markers suggest that Esrrb is specific to Purkinje cell progenitors in the developing cerebellum, a cell-type important in normal cerebellar function.
Farmers' Response to Winter Wheat Fallow Policy in the Groundwater Funnel Area of China: Case Study of the Hengshui Area, Hebei Province
Creators: name: Xie, H.
name: Xie, H.
Publisher: name: Unknown
Year: 2018
Subjects: Agricultural and Food Policy

description: Farmers' response to the winter wheat cropping policy in groundwater funnel areas is the key factor in promoting fallow plans. Therefore, this paper discusses the farmers responses and the influencing factors for the winter wheat policy in the Hebei groundwater funnel area by using an ordered multivariate logistic model; it aims to provide a theoretical basis for scientifically and rationally developing a rotation policy in the groundwater funnel area. The results revealed that cultivated land has a negative impact on the fallow policy. The number of households, the proportion of farmers, the per capita area of cultivated land, and machinery use have a negative impact on support for the fallow policy. The dependency ratio and land fragmentation have a significant positive impact on support for the fallow policy. Occupation has the greatest marginal effect on understanding of the fallow policy and satisfaction with fallow policy compensation, dependency ratio has the greatest marginal effect on support for the fallow policy. Finally, this paper proposes some policy and other recommendations such as the transfer of the surplus labor force, stronger government supervision of fallow policy compensation, stronger cultural education and greater promotion of the fallow policy. Acknowledgement : This study was supported by the National Natural Science Foundation of China (No. 41561040); the Technology Foundation of Jiangxi Education Department of China (No. KJLD14033 & No. GJJ160431) and the Fok Ying-Tung Fund (No. 141084).
Antiproliferative activity of stilbene derivatives and other constituents from the stem bark of Morus nigra L
Creators: name: Bar, Fatma M. Abdel
name: Abbas, Ghada M.
name: Gohar, Ahmed A.
name: Mohamed-Farid I. Lahloub
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Plant Biology

description: The antiproliferative activities of 2′,3,4′,5,5′-pentahydroxy-cis-stilbene 1, resveratrol 2, oxyresveratrol 3, norartocarpetin 4, kuwanon C 5, morusin 6, cudraflavone A7, kuwanon G 8, albafuran C 9, mulberrofuran G 10, 3-acetyl-O-α-amyrin 11, 3-acetyl-O-β-amyrin 12, ursolic acid-3-O-acetate 13 and uvaol 14, previously identified from the barks of Morus nigra L., were investigated against HepG2 and MCF-7 cell lines. In addition, a series of methylated stilbenes 15–19 were prepared using compounds 1–3 and their antiproliferative effects were similarly investigated. The structure of a new 2′,3,4′-trimethoxy-5-hydroxy-trans-stilbene 19 was elucidated using spectroscopic techniques. It showed remarkable activity against MCF-7 cells with IC50 12.5 μM. However, kuwanon C (5) showed the highest antiproliferative activity with IC50 3.92 and 9.54 μM against MCF-7 and HepG2, respectively.
Peculiarities of polarization switching in ferroelectric semiconductors with charged inhomogeneities
Creators: name: Morozovska, Anna N.
name: Eliseev, Eugeny A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have proposed the phenomenological description of polarization switching peculiarities in ferroelectric semiconductors with charged defects and prevailing extrinsic conductivity. Exactly we have modified Landau-Ginsburg approach shown that the macroscopic state of the aforementioned inhomogeneous system can be described by three coupled equations for three order parameters. Both the experimentally observed coercive field values well below the thermodynamic one and the various hysteresis loop deformations (minor, constricted and double loops) have been obtained in the framework of our model. The obtained results qualitatively explain the ferroelectric switching in such bulk ferroelectric materials as SBN single crystals doped with Ce, PZT films doped with Nd and La- doped PZT ceramics.
description: 16 pages, 6 figures
Nonuniversal properties of the single-particle density of states of 1D system with electron-phonon interactions
Creators: name: Papa, Emiliano
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have calculated the single-particle density of states (DOS) for a model of spinfull Tomonaga-Luttinger liquid with frequency dependent parameter $K_c$ of the charge sector (and $K_s=1$ of spin sector).Such frequency dependence may originate from interactions withoptical phonons.DOS exhibits a power-low suppressed asymptotic behaviour near $ω=0$ with exponent largerthan one, in agreement with previous results. For larger frequencies, but stillnot far away from the origin,DOS exhibits a peak, the position of which scales as$[K(0)+K^{-1}(0)]ω_0$, where $ω_0$ is the characteristic phononfrequency. The position of the peak decreases as the phonon'sfrequency becomes smaller. It is interesting that the peak of DOS does not coincide with the characteristic phonon frequency.
description: 6 pages; Figures not included
Additional file 6 of ACME dissociation: a versatile cell fixation-dissociation method for single-cell transcriptomics
Creators: name: García-Castro, Helena
name: Kenny, Nathan J.
name: Iglesias, Marta
name: Álvarez-Campos, Patricia
name: Mason, Vincent
name: Elek, Anamaria
name: Schönauer, Anna
name: Sleight, Victoria A.
name: Jakke Neiro
name: Aboobaker, Aziz
name: Permanyer, Jon
name: Irimia, Manuel
name: Arnau Sebé-Pedrós
name: Solana, Jordi
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6:. Review history.
Going global : determinants of Chinese outward foreign direct investment in the agri-food industry
Creators: name: Jin, S.
name: Guo, H.
name: Wang, H.H.
name: Delgado, M.S.
name: Jin, S.
name: Guo, H.
name: Wang, H.H.
name: Delgado, M.S.
Publisher: name: Unknown
Year: 2018
Subjects: subject: Marketing
subject: FOS: Economics and business

description: Growing investment from developing and transition economies flows to global agri-food industry, among which Chinese outward foreign direct investment (OFDI) in the agri-food industry attracted much more global attention in recent years. In this paper, the authors documented the evolution of Chinese OFDI in the agri-food industry from 1950s. Besides, conditional logit model is mainly used to econometrically analyze how the host country characteristics affect Chinese firms country choices on investing in foreign agri-food industry based on the panel data between 2006 and 2015. Both the conditional logit result and the robustness check (negative binomial result) show that Chinese OFDI in the agri-food industry has both motivations of agricultural resources seeking and market seeking. The result of sub agri-food industries indicates that market seeking motivation is distinct in the agriproduct processing and food manufacturing industries. Chinese OFDI flowing to these two industries are attracted by both GDP and population growth rate. In addition, lack of sufficient food is also an attraction to Chinese OFDI to flow into target country s food manufacturing industry. Acknowledgement : The authors would like to thank research assistant Yue Jin, Suxian Ma, Sai Du for their helpful support. The authors gratefully acknowledge the support from the National Natural Science Foundation of China (NNSFC-71273233, 71333011) and the Major Program of the Key Research Institute of Chinese Ministry of Education (No. 15JJD790032).
A More Complete Phenomenology of Tau Lepton Induced Air Showers
Creators: name: Cummings, Austin
name: Aloisio, Roberto
name: Bertaina, Mario
name: Bisconti, Francesca
name: Fenu, Francesco
name: Salamida, Francesco
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Many proposed and upcoming experiments seek to observe signals from upward going air showers initiated by tau leptons resulting from neutrino interactions inside the Earth. To save calculation time, event estimations for these observation methods are usually performed while making several assumptions about the showers themselves, which simplifies their rich phenomenology and may or may not lead to inaccuracies in results. Here, we present results of extensive CORSIKA simulations of upward going tau initiated showers in the energy range 1 PeV to 10 EeV. Specifically, we monitor the Cherenkov emission, the charged particle distributions, and the timing of the showers for different geometric configurations. We analyze the impact of the decay length and different decay modes of the tau on particle distributions and compare to primaries usually utilized to simulate a tau shower, such as gammas, electrons, and protons. We also check the accuracy of many of the usual assumptions of these showers and analyze the often ignored muon channel of the tau decay.
description: ICRC 2019 Proceedings Paper
Chrysotimus unifascia Yang and Saigusa
Creators: name: Wang, Mengqing
name: Yang, Ding
name: Grootaert, Patrick
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Dolichopodidae
Chrysotimus
Chrysotimus unifascia

description: Chrysotimus unifascia Yang and Saigusa
(Figs. 50–51)
 Chrysotimus unifascia Yang and Saigusa, 2005. In: Insect Fauna of Middle­West Qinling Range and South Mountains of Gansu Province: 752. Type locality: Shaanxi.
Diagnosis. Six dc, 2–3 irregularly paired acr. Hind tarsomere 1 with 4–5 black ventral bristles on basal 1/6. Epandrium with narrow lateral process acute apically; surstylus rather wide, acute apically; cercus broad and round.
Distribution. Shaanxi, Yunnan.
description: Published as part of Wang, Mengqing, Yang, Ding & Grootaert, Patrick, 2005, Chrysotimus Loew from China (Diptera: Dolichopodidae), pp. 1-32 in Zootaxa 1003 (1) on page 26, DOI: 10.11646/zootaxa.1003.1.1, http://zenodo.org/record/5048630
Additional file 1 of Young adult cancer risk behaviours originate in adolescence: a longitudinal analysis using ALSPAC, a UK birth cohort study
Creators: name: Wright, Caroline
name: Heron, Jon
name: Kipping, Ruth
name: Hickman, Matthew
name: Campbell, Rona
name: Martin, Richard M.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1. Supplementary Material, Description of data: The supplementary material contains additional information concerning: 1. Risk thresholds; 2. Confounder measures and their derivation; 3.Deriving the adolescent cumulative risk exposure measure; 4. Deriving the latent classes; 5. Deriving the sample; 6. Comparison of imputation sample and those excluded from the analysis by key demographic variables; 7.Risk profiles for adolescence, percentage of sample and cumulative risk score for complete case and imputed samples; 8. Latent class trajectories; 9. Cross tabulations of cumulative risk score quartiles and proportion belonging to each of the latent classes; and 10. Associations between the adolescent cancer risk measure and socioeconomic status (SES) measures.
title: Gaseous nitrogen emissions from caged laying hen manure.
Creators: name: Pratt, Emma Victoria
Publisher: name: The Open University
Year: 2006

description: A series of replicated, randomised block experiments were conducted to quantify the effect of temperature and egesta moisture content on the nitrogen losses during caged laying hen manure storage and to determine if the addition of a carbonaceous substrate to fresh caged laying hen egesta would reduce these losses.

During short-term storage (10-days), increasing temperature (15.3 - 25.4°C) and initial moisture content (722 - 796 g/kg) produced a linear increase (PcO.Ol) and a non-linear increase (PcO.OOl) in nitrogen loss from the manure, respectively. The interaction between these variables (P<0.05) produced a large increase in the rate of nitrogen loss from intermediate moisture samples, stored at the highest examined temperature. During long-term (18-weeks) manure storage, increasing temperatures produced a non-linear increase (P<0.05) in the rate of nitrogen loss.

The addition of carbohydrates (initially at 8 g/kg, for 7-days) to laying hen manure was examined to reduce nitrogenous losses during storage. This showed that straw had no effect on the loss of nitrogen; glucose additions increased the loss of nitrogen and starch additions tended (P>0.05) to increase bacterial numbers. The addition of sucrose or maltose to the manure increased bacterial numbers (P<0.05) and gaseous nitrogen losses were reduced (P<0.05). Addition of increasing levels of sucrose (0-50g/kg) gave a non-linear reduction in nitrogen loss (PcO.Ol). The lowest level of nitrogen loss was obtained with 35 g/kg of added sucrose.

The application of sucrose at this inclusion level and the storage of the amended manure over 12 weeks showed that nitrogen losses were reduced for up to the fourth week of storage and thereafter there was no difference in nitrogenous losses.
Electrical switching and oscillations in vanadium dioxide
Creators: name: Pergament, Alexander
name: Velichko, Andrei
name: Belyaev, Maksim
name: Putrolaynen, Vadim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We have studied electrical switching with S-shaped I-V characteristics in two-terminal MOM devices based on vanadium dioxide thin films. The switching effect is associated with the metal-insulator phase transition. Relaxation oscillations are observed in circuits with VO2-based switches. Dependences of the oscillator critical frequency Fmax, threshold power and voltage, as well as the time of current rise, on the switching structure size are obtained by numerical simulation. The empirical dependence of the threshold voltage on the switching region dimensions and film thickness is found. It is shown that, for the VO2 channel sizes of 10*10 nm, Fmax can reach the value of 300 MHz at a film thickness of ~20 nm. Next, it is shown that oscillatory neural networks can be implemented on the basis of coupled VO2 oscillators. For the weak capacitive coupling, we revealed the dependence of the phase difference upon synchronization on the coupling capacitance value. When the switches are scaled down, the limiting time of synchronization is reduced to Ts ~13 μs, and the number of oscillation periods for the entering to the synchronization mode remains constant, Ns ~ 17. In the case of weak thermal coupling in the synchronization mode, we observe in-phase behavior of oscillators, and there is a certain range of parameters of the supply current, in which the synchronization effect becomes possible. With a decrease in dimensions, a decrease in the thermal coupling action radius is observed, which can vary in the range from 0.5 to 50 μm for structures with characteristic dimensions of 0.1 to 5 μm, respectively. Thermal coupling may have a promising effect for realization of a 3D integrated oscillatory neural network.
description: 28 pages, 13 figures
Best Soldering Irons Uses
Creators: name: Ellyse
Publisher: name: Zenodo
Year: 2021
Subjects: welding

description: Hey, I’m Ellyse. I’m a student living in the US. I am a fan of web development, education, and DIY. I’m also interested in travel and entrepreneurship.
description: https://www.bestsolderingirons.com/best-soldering-iron-for-guitar/
Dynamics of a family of piecewise-linear area-preserving plane maps II. Invariant circles
Creators: name: Lagarias, Jeffrey C.
name: Rains, Eric M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37E30; 52C23; 82D30

description: This paper studies the behavior under iteration of the maps T_{ab}(x,y)=(F_{ab}(x)-y,x) of the plane R^2, in which F_{ab}(x)=ax if x>=0 and bx if x<0. The orbits under iteration correspond to solutions of the nonlinear difference equation x_{n+2}= 1/2(a-b)|x_{n+1}| + 1/2(a+b)x_{n+1} - x_n. This family of maps has the parameter space (a,b)\in R^2. These maps are area-preserving homeomorphisms of R^s that map rays from the origin into rays from the origin. This paper shows the existence of special parameter values where T_{ab} has every nonzero orbit an invariant circle with irrational rotation number, and these invariant circles are piecewise unions of arcs of conic sections. Numerical experiments suggest the possible existence of many other parameter values having invariant circles.
description: v2 corresponds to second half of old part I; 27 pages latex, 9 ps figure files. Current part I is math.DS/0301294, part III is math.DS/0505103; v3 reflects prior work of Beardon, Bullett and Rippon
Relationship between agricultural growth and energy consumption in Indian agriculture: A panel co-integration analysis
Creators: name: Kumar, R.R.
name: Jha, G.K.
name: Singh, K.N.
name: Kumar, R.R.
name: Jha, G.K.
name: Singh, K.N.
Publisher: name: Unknown
Year: 2018
Subjects: Resource/Energy Economics and Policy

description: Abstract This paper empirically examined the long-run co-movement and the causal relationship between electricity consumption and real Gross State Domestic Product (GSDP) from agriculture and allied sector for 17 major states of India during the period 1993-2013. Since the time series analysis may yield unreliable and inconsistent results with the short time spans of datasets, we employed new heterogeneous panel co-integration and panel-based error correction models techniques to investigate the relationship between two variables. The empirical results fully supported a positive long-run co-integrated relationship between GSDP and electricity consumption when the heterogeneous states effect is taken into account. It is found that although agricultural growth and electricity consumption lack short-run causality, there is a long-run unidirectional causality running from electricity consumption to agricultural growth. This implies that reducing electricity consumption does not adversely affect agricultural growth in the short-run but would affect in the long-run. Keywords: Agricultural growth, Electricity consumption, Panel co-integration Acknowledgement : I wish to thank ICAR- Indian Agricultural Statistics Research Institute to provide facilities for the work.
Will Cognitive, Non-cognitive Performance and Appearance Affect Children s Decision of Making Friends? Evidence from Rural China
Creators: name: Fang, Y.
name: Zhao, Q.
name: Fang, Y.
name: Zhao, Q.
Publisher: name: Unknown
Year: 2018
Subjects: Labor and Human Capital

description: The main goal of this paper is to identify what will affect a child s decision of choosing someone as a good friend, and further, to identify why some children have been chosen as others best friends more than once, which means popularity. We draw on a dataset with 11889 observations by conducting a series of standard tests in 2017 spanning 4 provinces in China. We use cognitive (standard math score) and non-cognitive performance (esteem, depression, and grit) and appearance (HAZ and whether the student is overweight) as our key explanatory variables, and we standardized these key variables to identify which factor contributes to the decision of choosing friends and which contributes more while choosing friends. Our first finding shows that math score, depression and whether the student is overweight significantly contribute to the decision of choosing friends. The children who do better in math, have lower tendency to depression and not overweight will have 4.9%, 2.2% and 2.4% higher possibility to be chosen as friends than their counterparts, respectively. Furthermore, when considering popularity of children, we find the similar results. The two main findings show that one may become more popular if he has higher cognitive ability and good appearance. Acknowledgement : We gratefully acknowledge the financial support by National Science Foundation of China (Grants: 71603261); The Ministry of education of Humanities and Social Science project (Grants: 16YJC880107).
Additional file 8 of Influence of Casein kinase II inhibitor CX-4945 on BCL6-mediated apoptotic signaling in B-ALL in vitro and in vivo
Creators: name: Richter, Anna
name: Sender, Sina
name: Lenz, Annemarie
name: Schwarz, Rico
name: Hinz, Burkhard
name: Knuebel, Gudrun
name: Sekora, Anett
name: Escobar, Hugo Murua
name: Junghanss, Christian
name: Roolf, Catrin
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Developmental Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional File 8: Figure S5. Original blots for Fig. 3b, c, S2, S3. Red boxes indicate the regions used in the respective Figures.
Ocean surface radial velocity imaging in the AT-INSAR Velocity Bunching Model. A functional approach
Creators: name: Perez, Fabricio
name: Moreles, Miguel Angel
name: Morales, Hector
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 45Q05 65R30 86A05

description: This work is concerned with the estimation of radial velocities of sea surface elevations. The data, is a noisy along-track interferometric synthetic aperture radar (AT-INSAR) image. We assume the Velocity Bunching Model. This model relates the complex AT-INSAR image at a point in the image plane, with the radial velocity of a scatterer point in the sea surface. The relation is by means of a nonlinear integral operator mapping radial velocities into AT-INSAR images. Consequently, the estimation of radial velocities, amounts to the solution of nonlinear integral equations. Our proposal is to solve the latter by Newton's methods on function spaces, the optimize then discretize approach. We show that this continuous version is accurate, and faster than the classical discretize then optimize version. Also a physical comparison is carried out with the interferometric velocities.
FOREIGN OWNERSHIP OF U.S. AGRICULTURAL LAND THROUGH DECEMBER 31, 1987: COUNTY-LEVEL DATA
Creators: name: DeBraal, J. Peter
name: Butler, Gertrude S.
name: DeBraal, J. Peter
name: Butler, Gertrude S.
Publisher: name: Unknown
Year: 1988
Subjects: subject: Agricultural and Food Policy
subject: Land Economics/Use
subject: Agricultural land
subject: foreign investment
subject: foreign landownership
subject: county data

description: Foreign investment in U.S. agricultural land has been reported for 12.5 million acres in 1,839 of the 3,041 counties in the United States. Data are presented for each county to show the number of acres and parcels, value, country of origin, and use of foreign-owned agricultural land. Aggregation of the data at the county level supplements "Foreign Ownership of U.S. Agricultural Land Through December 31, 1987," ERS Staff Report AGE5880314.
Casimir force on a piston
Creators: name: Cavalcanti, R. M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a massless scalar field obeying Dirichlet boundary conditions on the walls of a two-dimensional L x b rectangular box, divided by a movable partition (piston) into two compartments of dimensions a x b and (L-a) x b. We compute the Casimir force on the piston in the limit L -> infinity. Regardless of the value of a/b, the piston is attracted to the nearest end of the box. Asymptotic expressions for the Casimir force on the piston are derived for a << b and a >> b.
description: 10 pages, 1 figure. Final version, accepted for publication in Phys. Rev. D
Quantum Algorithms for the Most Frequently String Search, Intersection of Two String Sequences and Sorting of Strings Problems
Creators: name: Khadiev, Kamil
name: Ilikaev, Artem
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We study algorithms for solving three problems on strings. The first one is the Most Frequently String Search Problem. The problem is the following. Assume that we have a sequence of $n$ strings of length $k$. The problem is finding the string that occurs in the sequence most often. We propose a quantum algorithm that has a query complexity $\tilde{O}(n \sqrt{k})$. This algorithm shows speed-up comparing with the deterministic algorithm that requires $Ω(nk)$ queries. The second one is searching intersection of two sequences of strings. All strings have the same length $k$. The size of the first set is $n$ and the size of the second set is $m$. We propose a quantum algorithm that has a query complexity $\tilde{O}((n+m) \sqrt{k})$. This algorithm shows speed-up comparing with the deterministic algorithm that requires $Ω((n+m)k)$ queries. The third problem is sorting of $n$ strings of length $k$. On the one hand, it is known that quantum algorithms cannot sort objects asymptotically faster than classical ones. On the other hand, we focus on sorting strings that are not arbitrary objects. We propose a quantum algorithm that has a query complexity $O(n (\log n)^2 \sqrt{k})$. This algorithm shows speed-up comparing with the deterministic algorithm (radix sort) that requires $Ω((n+d)k)$ queries, where $d$ is a size of the alphabet.
description: THe paper was presented on TPNC 2019
title: Chemokines and their receptors in the metastatic behaviour of human pancreatic ductal adenocarcinoma.
Creators: name: Marchesi, Federica
Publisher: name: The Open University
Year: 2006

description: The aim of this thesis was to investigate the role of chemokines and their receptors in human pancreatic adenocarcinoma and to explore whether chemokine receptors and their ligands are involved in tumor dissemination. The repertoire of chemokine receptors expressed in 11 pancreatic adenocarcinoma cell lines tested included CXCR4 and CX3CR1. Their significance was therefore further investigated. Expression of CXCR4 was higher in lines derived from metastases. The chemokine CXCL12 induced chemotaxis in CXCR4-positive cell lines, which was inhibited by an anti-CXCR4 specific antibody and by the antagonist AMD3100. Transendothelial migration, Matrigel invasion and activation of matrix metalloproteases were also enhanced by CXCL12. Proliferation was stimulated by CXCL12 in CXCR4-positive cell lines and partially inhibited by the inhibitor AMD3100, indicating an autocrine loop. The addition of exogenous CXCL12 inhibited apoptosis induced by serum starvation. These data demonstrate that autocrine or paracrine loops centred on the CXCR4/CXCL12 axis promote pancreatic cancer cell migration, matrix degradation and invasion, proliferation and survival. The function of the chemokine receptor CX3CR1 was investigated in the context of the peculiar propensity o f pancreatic cancer to disseminate and grow along nerve fibers, as its chemokine ligand Fractalkine/Neurotactin/CX3CLl is expressed by neuronal structures. CX3CR1-positive tumour cells migrated in a dose-dependent manner to CX3CL1 and this effect was blocked by specific anti-CX3CRl antibodies. CX3CR1-positive tumour cells adhered to endothelial and neuronal cells stimulated with TNFa/IFNy, known to induce Fractalkine expression. Neuronal derived Fractalkine elicited migration of CX3CR1-positive pancreatic tumour cells. The CX3CL1 chemokine was detected in vivo in surgical sections of pancreatic cancer nerve metastasis. These results suggest that the CX3CR1/Fractalkine axis could be involved in the dissemination of pancreatic tumour cells via nerve structures. In conclusion, the data presented here support the hypothesis that a selected set of chemokine receptors are expressed in carcinoma of the pancreas and are involved in tumour cell migration and invasion. For CXCR4, promotion o f cell survival and proliferation was observed. For CX3CR1, a role in perineural tropism is suggested.
Locally addressable tunnel barriers within a carbon nanotube
Creators: name: Biercuk, M. J.
name: Mason, N.
name: Chow, J. M.
name: Marcus, C. M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report the realization and characterization of independently controllable tunnel barriers within a carbon nanotube. The nanotubes are mechanically bent or kinked using an atomic force microscope, and top gates are subsequently placed near each kink. Transport measurements indicate that the kinks form gate-controlled tunnel barriers, and that gates placed away from the kinks have little or no effect on conductance. The overall conductance of the nanotube can be controlled by tuning the transmissions of either the kinks or the metal-nanotube contacts.
description: related papers at http://marcuslab.harvard.edu
THE CONSERVATION TITLE OF THE FOOD SECURITY ACT OF 1985: CHALLENGE OF A MULTIPLE-OBJECTIVE PROGRAM
Creators: name: Ogg, Clayton W.
name: Ogg, Clayton W.
Publisher: name: Unknown
Year: 1988
Subjects: subject: Agricultural and Food Policy
subject: Environmental Economics and Policy
subject: erosion
subject: excess production
subject: environment
subject: pollution

description: Discretionary environmental provisions could add to the Conservation Reserve Program's (CRP) objectives but would complicate the program. Nationally consistent criteria for designating fields contributing to salinity and selenium pollution, groundwater declines, loss of wetland habitat, or groundwater pollution are not yet available. Particularly vexing for the CRP would be groundwater problems, since the main cropland contributors generally have not yet been identified, and such croplands may be widely dispersed. In spite of these challenges, enrollment of marginal acres contributing to several environmental problems offers economic advantages, especially if States take action to foster enrollment in watersheds actually subject to pollution.