cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multipolar, Polarization Shaped High Harmonic Generation by Intense Vector Beams
Creators: name: Wätzel, Jonas
name: Berakdar, Jamal
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: High harmonic generation (HHG) is a manifestation of the strongly nonlinear response of matter to intense laser fields and has, as the basis for coherent XUV sources a variety of applications. Recently, HHG from atoms in a phase and polarization structured laser was demonstrated and interpreted based on the transverse electric field component of the driving pulse. Here we point out that as dictated by Maxwell equations, such fields have a longitudinal component which in general has a fundamental influence on the charge dynamics. For instance, its interplay with the transversal field component enables endowing the emitted radiation locally with circular polarization and a defined polarity. It is shown that the time-dependent Stokes parameters defining the polarization state of HHG can be tuned by varying the waist of the driving field which in turn, changes the ratio between the longitudinal and transverse electric-field components of the driving laser. In addition, employing a multipole expansion of the produced harmonics exposes the specific multipolar character and the relation to the spatial structure of the driving field polarization states. The scheme proposed here allows a full polarization control of the emitted harmonics by only one driving laser. A tighter focusing of the driving pulse renders possible the emission of harmonics with both even and odd spatial symmetry. The underlying mechanism is due to the fundamental interplay between the transverse and longitudinal components of the laser's electromagnetic vector potential. The ratio between those components is controllable by just focusing the laser spot, pointing to an accessible tool for polarization and polarity control of the high harmonics.
description: 7 pages, 5 pictures, submitted to PRL, accepted at PRA
A proof of the uniqueness and stability of the equilibriums in the absence of consumer demography; The relationships among mobility, fitness sensitivity and the time for the system to reach equilibrium in the absence of consumer demography; The proof of the relationship between the fitness sensitivity of movement and equilibria in the absence of consumer demography; The proof of the relationships between the fitness-sensitivity of consumers’ movement and regional resource density in the absence of consumer demography
Creators: name: JIAO, Jing
name: Riotte-Lambert, Louise
name: Pilyugin, Sergei
name: Gil, Michael
name: Osenberg, Craig
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: 60801 Animal Behaviour
subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: Mathematic proof for the stability of equations without consumer demography and the uniqueness of the solution; This is the numerical simulation to reveal the relationship among mobility, fitness sensitivity and the time to reach equlibrium without considering consumer's demography; Mathematic proof about the relationship between fitness sensitivity and system equlibrium without considering consumer demography; Mathematic proof about the correlation between fitness sensitivity and regional resource density without considering consumer demography
Impact of Income on Calorie and Nutrient Intakes: A Cross-Country Analysis
Creators: name: Salois, Matthew J.
name: Tiffin, J. Richard
name: Balcombe, Kelvin George
name: Salois, Matthew J.
name: Tiffin, J. Richard
name: Balcombe, Kelvin George
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: International Development
subject: Research Methods/ Statistical Methods
subject: calorie and nutrient consumption
subject: food and nutrition policy
subject: income elasticities
subject: nonparametric
subject: panel
subject: quantile regression.

description: The relationship between income and nutrient intake is explored. Nonparametric, panel, and quantile regressions are used. Engle curves for calories, fat, and protein are approximately linear in logs with carbohydrate intakes exhibiting diminishing elasticities as incomes increase. Elasticities range from 0.10 to 0.25, with fat having the highest elasticities. Countries in higher quantiles have lower elasticities than those in lower quantiles. Results predict significant cumulative increases in calorie consumption which are increasingly composed of fats. Though policies aimed at poverty alleviation and economic growth may assuage hunger and malnutrition, they may also exacerbate problems associated with obesity.
K-band Properties of Galaxy Clusters and Groups: Brightest Cluster Galaxies and Intracluster Light
Creators: name: Lin, Yen-Ting
name: Mohr, Joseph J
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the near-infrared K-band properties of the brightest cluster galaxies (BCGs) in a sample of 93 galaxy clusters and groups, using data from the Two Micron All Sky Survey. Our cluster sample spans a factor of 70 in mass, making it sensitive to cluster mass related trends. We study the correlations between the BCG luminosity L_b and the mass or luminosity of the host clusters, finding that BCGs in more massive clusters are more luminous than their counterparts in less massive systems, and that the BCGs become less important in the overall cluster light L200 as cluster mass increases. We argue that BCGs grow in luminosity mainly by merging with other luminous galaxies as the host clusters grow hierarchically; the decreasing BCG luminosity fraction L_b/L_200 with cluster mass indicates that the rate of luminosity growth in BCGs is slow compared to the rate at which clusters acquire galaxy light from the field or other merging clusters. We use the observed cluster luminosity-mass relation and a merger tree model to estimate that the amount of intracluster light (ICL) increases with cluster mass; calculations suggest that in 10^{15}Mo clusters more than 50% of total stellar mass is in ICL. The cluster baryon fraction accounting for the ICL is in good agreement with the CMB constraints. The inclusion of ICL reduces thediscrepancy between the observed cluster cold baryon fraction and that found in hydro simulations. Based on the observed Fe abundance in the ICM, we find that the predicted ICL together with the observed galaxy light, match the Fe mass-tolight ratio expected from simple stellar population models with a Salpeter IMF. The ICL also makes it easier to produce the Fe core excess found in cool-core clusters. (abridged)
description: 18 pages, 9 figures, accepted for publication in the Astrophysical Journal
Learning the Fuzzy Phases of Small Photonic Condensates
Creators: name: Rodrigues, João D.
name: Dhar, Himadri S.
name: Walker, Benjamin T.
name: Smith, Jason M.
name: Oulton, Rupert F.
name: Mintert, Florian
name: Nyman, Robert A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Phase transitions, being the ultimate manifestation of collective behaviour, are typically features of many-particle systems only. Here, we describe the experimental observation of collective behaviour in small photonic condensates made up of only a few photons. Moreover, a wide range of both equilibrium and non-equilibrium regimes, including Bose-Einstein condensation or laser-like emission are identified. However, the small photon number and the presence of large relative fluctuations places major difficulties in identifying different phases and phase transitions. We overcome this limitation by employing unsupervised learning and fuzzy clustering algorithms to systematically construct the fuzzy phase diagram of our small photonic condensate. Our results thus demonstrate the rich and complex phase structure of even small collections of photons, making them an ideal platform to investigate equilibrium and non-equilibrium physics at the few particle level.
ЕНЕРГИЯНИ ТЕЖАШ ВА ЭНЕРГИЯ САМАРАДОРЛИГИНИ ОШИРИШ СОҲАСИГА ОИД ҚОНУНЧИЛИК ИЖРОСИ УСТИДАН ПРОКУРОР НАЗОРАТИНИ ТАКОМИЛЛАШТИРИШ
Creators: name: Саттаров, Азим
Publisher: name: Zenodo
Year: 2024

description: Экологик муаммолар ортиб бораётган бир шароитда энергияни тежаш қоидаларига риоя этилишини таъминлаш ва энергия самарадорлигини оширишда прокурорларнинг роли тобора муҳим аҳамият касб этмоқда. Ушбу мақола энергетика соҳасида ҳуқуқни муҳофаза қилиш устидан прокурор назоратини яхшилашнинг муҳим заруратини ўрганади. Амалдаги қонунчилик базаси, протсессуал носозликлар, прокуратура ва ҳуқуқни муҳофаза қилувчи органлар ўртасидаги ҳамкорликни таҳлил қилиш орқали ўрганиш назорат ва жавобгарликни кучайтириш стратегияларини белгилаб беради. Кенгайтирилган тренинглар, сиёсат ислоҳотлари ва технологияларни интегратсиялашуви орқали мақола прокуратура органларига энергияни тежашга ёрдам берувчи қоидаларни самарали татбиқ этиш ҳуқуқини бериш учун яхлит ёндашувни таклиф қилади. Топилмалар барқарорлик мақсадларига жавоб берадиган янада масъулиятли энергия бошқаруви тизимига ҳисса қўшишга қаратилган.
Pentaquark Decay Width in QCD Sum Rules
Creators: name: Eidemüller, M.
name: Navarra, F. S.
name: Nielsen, M.
name: da Silva, R. Rodrigues
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In a diquark-diquark-antiquark picture of the pentaquark we study the decay $Θ\rightarrow K^{+} n$ within the framework of QCD sum rules. After evaluation of the relevant three-point function, we extract the coupling $g_{ΘnK}$ which is directly related to the pentaquark width. Restricting the decay diagrams to those with color exchange between the meson-like and baryon-like clusters reduces the coupling constant by a factor of four. Whereas a small decay width might be possible for a positive parity pentaquark, it seems difficult to explain the measured width for a pentaquark with negative parity.
description: 20 pages, 6 figures
Obesity and Diabetes, the Built Environment, and the 'Local' Food Economy
Creators: name: Salois, Matthew J.
name: Salois, Matthew J.
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: Health Economics and Policy
subject: community-intervention
subject: diabetes
subject: food environment
subject: famers’ market
subject: leverage points
subject: ‘local’ food
subject: robust regression
subject: obesity
subject: outliers.

description: Obesity and diabetes are increasingly attributed to environmental factors, however, little attention has been paid to the influence of the ‘local’ food economy. This paper examines the association of measures relating to the built environment and ‘local’ agriculture with U.S. county-level prevalence of obesity and diabetes. Key indicators of the ‘local’ food economy include the density of farmers’ markets and the presence of farms with direct sales. This paper employs a robust regression estimator to account for non-normality of the data and to accommodate outliers. Overall, the built environment is associated with the prevalence of obesity and diabetes and a strong 'local' food economy may play an important role in prevention. Results imply considerable scope for community-level interventions.
HAWC+ Far-Infrared Observations of the Magnetic Field Geometry in M51 and NGC 891
Creators: name: Jones, Terry Jay
name: Kim, Jin-Ah
name: Dowell, C. Darren
name: Morris, Mark R.
name: Pineda, Jorge L.
name: Benford, Dominic J.
name: Berthoud, Marc
name: Chuss, David T.
name: Dale, Daniel A.
name: Fissel, L. M.
name: Goldsmith, Paul F.
name: Hamilton, Ryan T.
name: Hanany, Shaul
name: Harper, Doyal A.
name: Henning, Thomas K.
name: Lazarian, Alex
name: Looney, Leslie W.
name: Michail, Joseph M.
name: Novak, Giles
name: Santos, Fabio P.
name: Sheth, Kartik
name: Siah, Javad
name: Stacey, Gordon J.
name: Staguhn, Johannes
name: Stephens, Ian W.
name: Tassis, Konstantinos
name: Trinh, Christopher Q.
name: Vaillancourt, John E.
name: Ward-Thompson, Derek
name: Werner, Michael
name: Wollack, Edward J.
name: Zweibel, Ellen G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: SOFIA HAWC+ polarimetry at $154~\micron$ is reported for the face-on galaxy M51 and the edge-on galaxy NGC 891. For M51, the polarization vectors generally follow the spiral pattern defined by the molecular gas distribution, the far-infrared (FIR) intensity contours, and other tracers of star formation. The fractional polarization is much lower in the FIR-bright central regions than in the outer regions, and we rule out loss of grain alignment and variations in magnetic field strength as causes. When compared with existing synchrotron observations, which sample different regions with different weighting, we find the net position angles are strongly correlated, the fractional polarizations are moderately correlated, but the polarized intensities are uncorrelated. We argue that the low fractional polarization in the central regions must be due to significant numbers of highly turbulent segments across the beam and along lines of sight in the beam in the central 3 kpc of M51. For NGC 891, the FIR polarization vectors within an intensity contour of 1500 $\rm{MJy~sr^{-1}}$ are oriented very close to the plane of the galaxy. The FIR polarimetry is probably sampling the magnetic field geometry in NGC 891 much deeper into the disk than is possible with NIR polarimetry and radio synchrotron measurements. In some locations in NGC 891 the FIR polarization is very low, suggesting we are preferentially viewing the magnetic field mostly along the line of sight, down the length of embedded spiral arms. There is tentative evidence for a vertical field in the polarized emission off the plane of the disk.
description: AJ, Accepted, In Press
Flavonoids and connexin proteins : growth suppression and prognostic value in human breast cancer
Creators: name: Conklin, Christopher M. J.
Publisher: name: University of British Columbia
Year: 2009

description: Connexin proteins form gap junctions permitting direct intercellular cytoplasmic exchange. Gap junctional intercellular communication (GJIC) is important for maintaining homeostasis and preventing cell transformation. Connexins may also have independent functions including tumor growth suppression. Most tumors express less connexins, have reduced GJIC, and have increased growth rates compared to nontumorigenic cells. Asian females, who consume foods rich in flavonoids have a 4 to 6-fold reduction in breast cancer incidence. The purpose of this study was to determine if common flavonoids, genistein and quercetin, increase connexin43 (Cx43), improve GJIC, and retard growth of metastatic human breast cancer cells (MDA-MB-231). Results demonstrated that genistein and quercetin are potential anti-breast cancer agents. Although flavonoid treatment did not improve GJIC, genistein (2.5 ug/ml, 5 ug/ml, 15 ug/ml) and quercetin (2.5 |J.g/ml, 5 |a.g/ml) increased Cx43 protein and suppressed MDA-MB-231 cell proliferation at concentrations which were not toxic to nontumorigenic breast cancer cells. Reliable prognostic indicators of breast cancer include axillary nodal status, tumor size and histological grade. Additionally, estrogen receptor/progesterone receptor (ER/PR) status, and Ki67, an indicator of proliferative activity, are useful for predicting patient survival and relapse. Improved prognostic methods and a search for a more complete understanding of cancer biology inspires the identification of new molecular markers. Tissue microarrays, containing over 300 cases of invasive breast carcinoma were stained with Cx26, Cx32, and Cx43 antibodies. Connexin immunoreactivity was correlated with established immunohistochemical and histopathological breast cancer markers. Cx26, Cx32, and Cx43 did not correlate with tumor grade or tumor size. Cx32 inversely correlated with lymph node status (P < 0.05), and there was a positive correlation between Cx43 and PR status (P < 0.01). Both Cx32 and Cx43 correlated positively with ER status (P < 0.01), and Cx43 correlated negatively with Ki67 expression (P < 0.01). Cx26, Cx32, and Cx43 did not correlate with patient outcome. In conclusion, connexin proteins did not appear to be reliable independent indicators of breast cancer prognosis. However, Cx32 may protect against regional lymph node spread, and Cx43 may counteract aggressively proliferating breast cancer.
WST_Monograph 19-сторінки-201-208.pdf
Creators: name: Viktoriia Tsokota
Publisher: name: figshare
Year: 2020
Subjects: subject: 179999 Psychology and Cognitive Sciences not elsewhere classified
subject: FOS: Psychology

description: Advantages of mobile learning in the accumulation, storage, analysis, on-line discussion of materials. Learn as exciting, creating a continuous learning experience that will be motivated and applied. Theoretical substantiation and implementation of the content provision of a competently oriented learning environment, rethinking of teaching methods, forms the subject experience in the learning process. Educational activities are carried out in a contextualized environment to collect relevant and significant resources and interact with teachers and mentors according to standards. Correct dimensions of mobile learning and the corresponding changes in educational activities, infrastructure, environment, student's condition and others need further study.
Non-Fermi Power law Acceleration in Astrophysical Plasma Shocks
Creators: name: Hededal, C. B.
name: Haugboelle, T.
name: Frederiksen, J. Trier
name: Nordlund, Å.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Collisionless plasma shock theory, which applies for example to the afterglow of gamma ray bursts, still contains key issues that are poorly understood. In this paper we study charged particle dynamics in a highly relativistic collisionless shock numerically using ~10^9 particles. We find a power law distribution of accelerated electrons, which upon detailed investigation turns out to originate from an acceleration mechanism that is decidedly different from Fermi acceleration. Electrons are accelerated by strong filamentation instabilities in the shocked interpenetrating plasmas and coincide spatially with the power law distributed current filamentary structures. These structures are an inevitable consequence of the now well established Weibel-like two-stream instability that operates in relativistic collisionless shocks. The electrons are accelerated and decelerated instantaneously and locally; a scenery that differs qualitatively from recursive acceleration mechanisms such as Fermi acceleration. The slopes of the electron distribution power laws are in concordance with the particle power law spectra inferred from observed afterglow synchrotron radiation in gamma ray bursts, and the mechanism can possibly explain more generally the origin of non-thermal radiation from shocked inter- and circum-stellar regions and from relativistic jets.
description: 4 pages accepted for publication in ApJ Letters. High resolution figures are available online at http://www.astro.ku.dk/users/hededal/0408558
Calvia albida Bielawski
Creators: name: POORANI, J.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Coccinellidae
Calvia
Calvia albida

description: Calvia albida Bielawski
(Fig. 30)
Calvia albida Bielawski, 1972: 308 (Holotype male, ZSBS; Type locality: Nepal).—Booth 1997: 931; Poorani 2002a: 322; Ren et al. 2009: 180; Yu 2010: 49.
Halyzia maculata Jing, 1987: 201.—Synonymized by Yu 2010: 49.
Diagnosis. Length: 7.00– 7.50 mm; width: 6.00– 6.50 mm. Form (Fig. 30a, b) elongate oval, dorsum moderately convex, glabrous except head with silvery white hairs. Ground colour lime green to yellowish green in live specimens, pronotum with an indistinct, M-shaped brown marking, elytra mottled with creamy white spots. Prosternal process convex, without carinae. Spermatheca (Fig. 30c, d) as illustrated, with a bulky cornu. Its green colour with a mottled elytral pattern is similar to that of Calvia explanata Poorani, from which it can be distinguished by its distinctly elongate oval form and the genitalia.
Distribution. India: Northeastern region (Arunachal Pradesh, Manipur, Sikkim, Uttarakhand, West Bengal); Nepal; Bhutan; China.
Prey/associated habitat. Aphididae: Mollitrichosiphum alni Ghosh et al. on Indian alder (Phaloura & Singh 1991); Vesiculaphis (data label) (Booth 1997).
Seasonal occurrence. Collected in April, August and November (label data).
Notes. Bielawki (1972) described it from Nepal. Booth (1997) included it in his key to Indian Calvia spp. Yu (2010) recorded it from China and illustrated it.
description: Published as part of POORANI, J., 2023, An illustrated guide to lady beetles (Coleoptera: Coccinellidae) of the Indian Subcontinent. Part 1. Tribe Coccinellini, pp. 1-307 in Zootaxa 5332 (1) on page 50, DOI: 10.11646/zootaxa.5332.1.1, http://zenodo.org/record/8261502
Supporting Household Consumption in the Time of Economic Crisis: Evidence from Food Security Program in Indonesia
Creators: name: Pangaribowo, Evita Hanie
name: Pangaribowo, Evita Hanie
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agricultural and Food Policy
subject: Impact evaluation
subject: food security
subject: Indonesia

description: This study evaluates the impact of food security program – an almost universal program of Indonesian Social Safety Net Program in the time of economic crisis. Food security program aimed to protect poor households from the negative effects of economic crisis by means of highly subsidized rice. To assess the impact of the program, this study utilizes matching estimator approach combined with difference in difference method. The rich longitudinal dataset used in this study enables matching estimator and difference in difference approach to provide accurate estimate of the program’s impact on its beneficiaries. Results indicate the positive impact of the food security program on the expenditures of richer nutrient food which include meat, fish and dairy products. The program has also substantial impact on health expenditure. Nevertheless, this study also found that the program only has a limited impact to the neediest group. Improving targeting seems to be one of government’s tasks in order to increase program benefits, particularly to the poorest households.
Understanding Compact Object Formation and Natal Kicks I. Calculation Methods and the case of GRO J1655-40
Creators: name: Willems, B.
name: Henninger, M.
name: Levin, T.
name: Ivanova, N.
name: Kalogera, V.
name: McGhee, K.
name: Timmes, F. X.
name: Fryer, C. L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In recent years proper motion measurements have been added to the set of observational constraints on the current properties of Galactic X-ray binaries. We develop an analysis that allows us to consider all this available information and reconstruct the full evolutionary history of X-ray binaries back to the time of compact object formation. This analysis accounts for mass transfer through the ongoing X-ray phase, tidal circularization before the onset of Roche-lobe overflow, motion through the Galactic potential after the formation of the compact object, and binary orbital dynamics and hydrodynamic modeling of the core collapse. We apply the analysis to the soft X-ray transient GRO J1655-40 and, for the first time, use its full 3D peculiar velocity constraints right after core collapse instead of lower limits on the current space velocity given by the present-day radial velocity. We find that the system has remained within 200pc from the Galactic plane throughout its entire life time and that the mass loss and a kick possibly associated with the black hole (BH) formation imparted a kick velocity of 45-115 km/s to the binary's center of mass. Right after BH formation, the system consists of a 3.5-6.3 Msun BH and a 2.3-4 Msun main-sequence star. At the onset of the X-ray phase the donor is still on the main sequence. We find that a symmetric BH formation event cannot be formally excluded, but that the associated system parameters are only marginally consistent with the currently observed binary properties. BH formation mechanisms involving an asymmetric supernova explosion with associated BH kick velocities of a few tens of km/s, on the other hand, satisfy the constraints much more comfortably. We also derive an upper limit on the BH kick magnitude of 210 km/s. (abridged)
description: Minor revisions. Accepted for publication in ApJ
Chirality Through Classical Physics
Creators: name: Lin, Chris L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: Chirality, or handedness, is a topic that is common in biology and chemistry, yet is rarely discussed in physics courses. We provide a way of introducing the topic in classical physics, and demonstrate the merits of its inclusion - such as a simple way to visually introduce the concept of symmetries in physical law - along with giving some simple proofs using only basic matrix operations, thereby avoiding the full formalism of the three-dimensional point group.
description: 9 pages, 8 figures
title: The Advanced Floating Chirality Distance Geometry Approach ― How Anisotropic NMR Parameters Can Support the Determination of the Relative Configuration of Natural Products
Creators: name: Köck, Matthias
name: Reggelin, Michael
name: Immel, Stefan
Publisher: name: MDPI
Year: 2024

description: The configurational analysis of complex natural products by NMR spectroscopy is still a challenging task. The assignment of the relative configuration is usually carried out by analysis of interproton distances from NOESY or ROESY spectra (qualitative or quantitative) and scalar (J) couplings. About 15 years ago, residual dipolar couplings (RDCs) were introduced as a tool for the configurational determination of small organic molecules. In contrast to NOEs/ROEs which are local parameters (distances up to 400 pm can be detected for small organic molecules), RDCs are global parameters which allow to obtain structural information also from long-range relationships. RDCs have the disadvantage that the sample needs a setup in an alignment medium in order to obtain the required anisotropic environment. Here, we will discuss the configurational analysis of five complex natural products: axinellamine A (1), tetrabromostyloguanidine (2), 3,7-epi-massadine chloride (3), tubocurarine (4), and vincristine (5). Compounds 1–3 are marine natural products whereas 4 and 5 are from terrestrial sources. The chosen examples will carefully work out the limitations of NOEs/ROEs in the configurational analysis of natural products and will also provide an outlook on the information obtained from RDCs.
Economic Growth in the Philippines: A Spatial Econometrics Analysis at the Provincial Level, 1991 – 2000.
Creators: name: Pede, Valerien O.
name: Huelgas, Zenaida M.
name: Villano, Lorena
name: Garcia, Cornelia
name: McKinley, Justin D.
name: Mohanty, Samarendu
name: Pede, Valerien O.
name: Huelgas, Zenaida M.
name: Villano, Lorena
name: Garcia, Cornelia
name: McKinley, Justin D.
name: Mohanty, Samarendu
Publisher: name: Unknown
Year: 2011
Subjects: Community/Rural/Urban Development
Research and Development/Tech Change/Emerging Technologies
Research Methods/ Statistical Methods

description: Investigating the determinants of economic growth remains a long research tradition in the economic growth literature. Most studies in this literature have tried to link economic growth and different economic factors using either neoclassical growth theories or endogenous growth approaches. These studies apply these growth theories to identify the factors responsible for the observed differences/disparities between regions or countries. While early studies focused on cross-country analyses, the recent most studies consider regions or sub-national entities as unit of analysis. This has raised the question of whether theories developed for cross-country analysis could be automatically applied for regional or sub-national analysis. Given the profound difference between nations and regions in terms of degree of openness, theories developed in cross-country analysis may not be automatically applied in regional analysis (see Mangrini, 2004). However, properly accounting for the spatial interaction effects may provide a way to use these theories in regional analysis. Regional analysis of economic growth has therefore spurned the development of specialized quantitative methods designed to account for the spatial dimensions of higher resolution, spatially referenced data. The goal of this research is to investigate the process of regional economic growth in the Philippines focusing on provincial data. Previous studies on regional growth within the Philippines have analyzed the regional growth process following neoclassical growth models or endogenous growth models without explicitly modeling spatial dependence between regions and the role of spillover effects. Traditional growth regressions with ordinary least squares may yield biased or inconsistent estimates if spatial autocorrelation is present but have been accounted for. This paper uses spatial econometrics techniques to estimate three theoretical growth models: the unconditional growth model, the Solow model and the Mankiw Romer and Weil model. Investment and human capital were found to be the main drivers of economic growth.
RUBOB PRIMA CHOLG'USIDA IJRO IMKONIYATLARINI YANADA OSHIRUVCHI POZITSIYALAR
Creators: name: Ergashov, Ismatxo'ja
Publisher: name: Zenodo
Year: 2024

description: Ushbu tezisda rubob prima cholg‘usining shakllanish tarihi, ijro imkoniyatlarini yanada oshiruvchi pozitsiyalar, pozitsiyalarning turli almashtirish usullari misollar orqali ko‘rib chiqilib, tahlillar qilindi.
The cohomology of coalgebras in species
Creators: name: Tamaroff, Pedro
Publisher: name: arXiv
Year: 2020
Subjects: subject: K-Theory and Homology (math.KT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Aguiar and Mahajan introduced a cohomology theory for the twisted coalgebras of Joyal, with particular interest in the computation of their second cohomology group, which gives rise to their deformations. We use the Koszul duality theory between twisted algebras and coalgebras on the twisted coalgebra that gives rise to their cohomology theory to give a new alternative description of it which, in particular, allows for its effective computation. We compute it completely in various examples, including those proposed by Aguiar and Mahajan, and obtain structural results: in particular, we study its multiplicative structure and provide a Künneth formula.
description: New version, where the main result of the authors MSc thesis is re-proved using Koszul duality theory. All other results and computations remain unchanged. Added references given by anonymous referees, introduction rewritten. Article submitted for publication. Comments welcome
Technical Efficiency of Resource Conserving Technologies in Rice Wheat Systems: Case of Bihar and Eastern Uttar Pradesh in India
Creators: name: Khong, Tien Dung
name: Pede, Valerien O.
name: Sumalde, Zenaida M.
name: McKinley, Justin D.
name: Mohanty, Samarendu
name: Khong, Tien Dung
name: Pede, Valerien O.
name: Sumalde, Zenaida M.
name: McKinley, Justin D.
name: Mohanty, Samarendu
Publisher: name: Unknown
Year: 2011
Subjects: Agricultural and Food Policy
Crop Production/Industries
Food Security and Poverty
International Development
Production Economics
Productivity Analysis

description: This study aimed to evaluate the technical efficiency of farmers engaged in rice-wheat cropping systems in India using Resource Conserving Technologies (RCTs) such as zero-tillage and direct seeding, under the intervention of the Cereal Systems Initiative for South Asia (CSISA) project primarily funded by the Bill and Melinda Gates Foundation. The goal of the project is to alleviate hunger and malnutrition as well as increase income and food security for poor farmers living in South Asia. The Resource Conserving Technologies (RCTs) are being promoted as part of conservation agriculture supported by the project. These technologies are designed to reduce the strain agricultural production has on two critical natural resources: water and soil. The RCT technologies are being promoted by the CSISA project in several locations in India, and the main ones are direct seeded rice, reduced-tillage, and zero-tillage. The farmers participating in the study are part of the CSISA project and are located in Eastern Uttar-Pradesh and Bihar in Northeastern India. The data used in this study was derived from a socio-economic survey conducted in these two regions during the Kharif season of 2009 and Rabi season of 2010. A Stochastic frontier Analysis, using the Cobb-Douglas or Translog function form, was performed to investigate and compare the determinants of technical efficiency among farmers receiving intervention and those who are not. Farmers receiving intervention from the CSISA project tend to be more technically efficient than those without intervention.
Figures_and_captions_SI.docx from Bacterial surface motility is modulated by colony-scale flow and granular jamming
Creators: name: Rhodeland, Ben
name: Hoeger, Kentaro
name: Ursell, Tristan
Publisher: name: The Royal Society
Year: 2020
Subjects: Biophysics

description: Microbes routinely face the challenge of acquiring territory and resources on wet surfaces. Cells move in large groups inside thin, surface-bound water layers, often achieving speeds of 30 µm s−1 within this environment, where viscous forces dominate over inertial forces (low Reynolds number). The canonical Gram-positive bacterium Bacillus subtilis is a model organism for the study of collective migration over surfaces with groups exhibiting motility on length-scales three orders of magnitude larger than themselves within a few doubling times. Genetic and chemical studies clearly show that the secretion of endogenous surfactants and availability of free surface water are required for this fast group motility. Here, we show that: (i) water availability is a sensitive control parameter modulating an abiotic jamming-like transition that determines whether the group remains fluidized and therefore collectively motile, (ii) groups self-organize into discrete layers as they travel (iii) group motility does not require proliferation, rather groups are pulled from the front, and (iv) flow within expanding groups is capable of moving material from the parent colony into the expanding tip of a cellular dendrite with implications for expansion into regions of varying nutrient content. Together, these findings illuminate the physical structure of surface-motile groups and demonstrate that physical properties, like cellular packing fraction and flow, regulate motion from the scale of individual cells up to length scales of centimetres.
Iraqi children’s war experiences : the psychological impact of "operation Iraqi freedom"
Creators: name: Al-Mashat, Kasim Mohamed
Publisher: name: University of British Columbia
Year: 2009

description: This study investigated Iraqi children's experiences of "Operation Iraqi Freedom" and the meaning that the war had for them given their cultural context. Specifically, the study focused on the war experiences of children from the Northern town of Mosul who were exposed to both the missile bombardments during the war and to the fighting that ensued afterwards. In order to better understand the nature of war trauma in children, this study explored the children's perceptions of war experiences and the way in which they made sense of it. In this qualitative study, two focus groups were employed to interview a total of 12 children between the ages of 9 and 13. The children elaborated on either the drawings they made or on the letters they wrote about their war experiences. The Child's Reaction to Traumatic Events Scale (CRTES) was used to gather descriptive statistics on the children's levels of distress. General demographic information is provided. Results from the CRTES indicate a high level of distress amongst the majority of the children even seven months after the official end of the war in Iraq. A number of themes emerged that pertained to the children's war expereinces, the meaning it had for them, how they coped, and their future hopes. Finidngs were consistent with previous litererature in the field on the psychoglical impact of war trauma on children and their reations to it. This study demonstrates the importance of ideology, faith, and culture in how children make meaning of their traumatic war experiences. Implications for research and counselling psychology are provided, and future research is explored.
Consistency under sampling of exponential random graph models
Creators: name: Shalizi, Cosma Rohilla
name: Rinaldo, Alessandro
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: The growing availability of network data and of scientific interest in distributed systems has led to the rapid development of statistical models of network structure. Typically, however, these are models for the entire network, while the data consists only of a sampled sub-network. Parameters for the whole network, which is what is of interest, are estimated by applying the model to the sub-network. This assumes that the model is consistent under sampling, or, in terms of the theory of stochastic processes, that it defines a projective family. Focusing on the popular class of exponential random graph models (ERGMs), we show that this apparently trivial condition is in fact violated by many popular and scientifically appealing models, and that satisfying it drastically limits ERGM's expressive power. These results are actually special cases of more general results about exponential families of dependent random variables, which we also prove. Using such results, we offer easily checked conditions for the consistency of maximum likelihood estimation in ERGMs, and discuss some possible constructive responses.
description: Published in at http://dx.doi.org/10.1214/12-AOS1044 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Estimation of a Surface Water Quality Valuation Index for the Appalachian Region
Creators: name: Khatri-Chhetri, Arun
name: Collins, Alan R.
name: Khatri-Chhetri, Arun
name: Collins, Alan R.
Publisher: name: Unknown
Year: 2011
Subjects: subject: Environmental Economics and Policy
subject: Meta-analysis
subject: benefit transfer
subject: contingent valuation
subject: willingness-to-pay

description: A surface water quality valuation index is developed and used to compare counties across the Appalachian Region. This index was based on a meta-analysis of non-market water quality valuation studies along with an application of benefit transfer. The results reveal that Pennsylvania, Georgia, and New York had the highest percentages of counties with high index values within the Appalachian Region. As this research was part of an inter-disciplinary team assembled by the Appalachian Regional Commission, results of this index can be compared to other indices computed for water resources in the region.
Nonlinear shock acceleration beyond the Bohm limit
Creators: name: Malkov, M. A.
name: Diamond, P. H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We suggest a physical mechanism whereby the acceleration time of cosmic rays by shock waves can be significantly reduced. This creates the possibility of particle acceleration beyond the knee energy at ~10^15eV. The acceleration results from a nonlinear modification of the flow ahead of the shock supported by particles already accelerated to the knee momentum at p ~ p_*. The particles gain energy by bouncing off converging magnetic irregularities frozen into the flow in the shock precursor and not so much by re-crossing the shock itself. The acceleration rate is thus determined by the gradient of the flow velocity and turns out to be formally independent of the particle mean free path (m.f.p.). The velocity gradient is, in turn, set by the knee-particles at p ~ p_* as having the dominant contribution to the CR pressure. Since it is independent of the m.f.p., the acceleration rate of particles above the knee does not decrease with energy, unlike in the linear acceleration regime. The reason for the knee formation at p ~ p_* is that particles with $p > p_*$ are effectively confined to the shock precursor only while they are within limited domains in the momentum space, while other particles fall into ``loss-islands'', similar to the ``loss-cone'' of magnetic traps. This structure of the momentum space is due to the character of the scattering magnetic irregularities. They are formed by a train of shock waves that naturally emerge from unstably growing and steepening magnetosonic waves or as a result of acoustic instability of the CR precursor. These losses steepen the spectrum above the knee, which also prevents the shock width from increasing with the maximum particle energy.
description: aastex, 13 eps figures
title: Ð§Ð¸ÑÐ»ÐµÐ½Ð½ÑÐµ Ð¼ÐµÑÐ¾Ð´Ñ
title: Ð»Ð°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ½ÑÐ¹ Ð¿ÑÐ°ÐºÑÐ¸ÐºÑÐ¼
titleType: Subtitle
title: Numerical Analysis
Creators: name: ÐÑÐ´Ð°Ð½Ð¾Ð², ÐÐ¼Ð¸ÑÑÐ¸Ð¹
name: ÐÐ½ÑÑÐµÐ½ÐºÐ¾, ÐÐ¸ÑÐ°Ð¸Ð»
name: ÐÐ²Ð°Ð½Ð¾Ð², ÐÐ¸ÐºÐ¸ÑÐ°
Publisher: name: ÐÐÐÐÐ¢ÐÐ¥-ÐÐ ÐÐ¡Ð¡
Year: 2024
Subjects: Ð§Ð¸ÑÐ»ÐµÐ½Ð½ÑÐµ Ð¼ÐµÑÐ¾Ð´Ñ
ÐÑÑÐ¸ÑÐ»Ð¸ÑÐµÐ»ÑÐ½Ð°Ñ Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÐºÐ°

description: ÐÐ°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ½ÑÐ¹ Ð¿ÑÐ°ÐºÑÐ¸ÐºÑÐ¼ ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÐµÑ ÑÐ¾Ð´ÐµÑÐ¶Ð°Ð½Ð¸Ñ Ð´Ð¸ÑÑÐ¸Ð¿Ð»Ð¸Ð½Ñ Â«Ð§Ð¸ÑÐ»ÐµÐ½Ð½ÑÐµ Ð¼ÐµÑÐ¾Ð´ÑÂ» Ð¤ÐµÐ´ÐµÑÐ°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÑÐ°Ð½Ð´Ð°ÑÑÐ° Ð²ÑÑÑÐµÐ³Ð¾ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ 11.03.04 Â«Ð­Ð»ÐµÐºÑÑÐ¾Ð½Ð¸ÐºÐ° Ð¸ Ð½Ð°Ð½Ð¾ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð¸ÐºÐ°Â». Ð¡Ð¾Ð´ÐµÑÐ¶Ð¸Ñ Ð¼ÐµÑÐ¾Ð´Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐºÐ°Ð·Ð°Ð½Ð¸Ñ Ð´Ð»Ñ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¸Ñ Ð»Ð°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ½ÑÑ ÑÐ°Ð±Ð¾Ñ Ð¿Ð¾ ÐºÑÑÑÑ Â«Ð§Ð¸ÑÐ»ÐµÐ½Ð½ÑÐµ Ð¼ÐµÑÐ¾Ð´ÑÂ» Ð´Ð»Ñ Ð´Ð¾Ð¿Ð¾Ð»Ð½ÐµÐ½Ð¸Ñ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÐºÑÑÑÐ°, ÑÐ¸ÑÐ°ÐµÐ¼Ð¾Ð³Ð¾ Ð² Ð¡ÐÐ±ÐÐ£. ÐÐ¾ÑÐ¾Ð±Ð¸Ðµ ÑÐ¿Ð¾ÑÐ¾Ð±ÑÑÐ²ÑÐµÑ Ð¿ÑÐ°ÐºÑÐ¸ÑÐµÑÐºÐ¾Ð¼Ñ Ð·Ð°ÐºÑÐµÐ¿Ð»ÐµÐ½Ð¸Ñ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð¸Ð¹ Ð¾ ÑÐµÐ°Ð»Ð¸Ð·ÑÐµÐ¼Ð¾ÑÑÐ¸ Ð¸ ÑÐ¾ÑÐ½Ð¾ÑÑÐ¸ ÑÐµÑÐµÐ½Ð¸Ñ Ð·Ð°Ð´Ð°Ñ ÑÐ¸ÑÐ»ÐµÐ½Ð½ÑÐ¼Ð¸ Ð¼ÐµÑÐ¾Ð´Ð°Ð¼Ð¸, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð¸Ñ Ð½Ð°Ð²ÑÐºÐ¾Ð² ÑÐµÑÐµÐ½Ð¸Ñ Ð·Ð°Ð´Ð°Ñ ÑÐ¸ÑÐ»ÐµÐ½Ð½ÑÐ¼Ð¸ Ð¼ÐµÑÐ¾Ð´Ð°Ð¼Ð¸ Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð¿ÑÐ¾Ð³ÑÐ°Ð¼Ð¼Ð½Ð¾Ð³Ð¾ Ð¾Ð±ÐµÑÐ¿ÐµÑÐµÐ½Ð¸Ñ MATLAB Ð¸ ÑÑÐµÐ´ÑÑÐ² ÑÐ·ÑÐºÐ° Python. ÐÐ°ÑÐµÑÐ¸Ð°Ð» Ð¿ÑÐ°ÐºÑÐ¸ÐºÑÐ¼Ð° ÑÐ¾Ð³Ð»Ð°ÑÐ¾Ð²Ð°Ð½ Ñ Ð»ÐµÐºÑÐ¸Ð¾Ð½Ð½ÑÐ¼ ÐºÑÑÑÐ¾Ð¼ Ð¸ ÑÐ¾Ð´ÐµÑÐ¶Ð¸Ñ Ð½ÐµÐ¾Ð±ÑÐ¾Ð´Ð¸Ð¼ÑÐµ Ð´Ð»Ñ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¸Ñ Ð·Ð°Ð´Ð°Ð½Ð¸Ð¹ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸Ðµ ÑÐ²ÐµÐ´ÐµÐ½Ð¸Ñ. ÐÑÐµÐ´Ð½Ð°Ð·Ð½Ð°ÑÐµÐ½ Ð´Ð»Ñ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¸Ñ Ð»Ð°Ð±Ð¾ÑÐ°ÑÐ¾ÑÐ½Ð¾Ð³Ð¾ Ð¿ÑÐ°ÐºÑÐ¸ÐºÑÐ¼Ð° ÑÑÑÐ´ÐµÐ½ÑÐ°Ð¼Ð¸ ÐÐ­Ð¸Ð¢ Ð¡ÐÐ±ÐÐ£ Ð¿Ð¾ ÐºÑÑÑÑ Â«Ð§Ð¸ÑÐ»ÐµÐ½Ð½ÑÐµ Ð¼ÐµÑÐ¾Ð´ÑÂ», Ð¾Ð±ÑÑÐ°ÑÑÐ¸Ð¼Ð¸ÑÑ Ð¿Ð¾ Ð½Ð°Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ 11.03.04 Â«Ð­Ð»ÐµÐºÑÑÐ¾Ð½Ð¸ÐºÐ° Ð¸ Ð½Ð°Ð½Ð¾ÑÐ»ÐµÐºÑÑÐ¾Ð½Ð¸ÐºÐ°Â».
description: The laboratory tutorial corresponds to the content of the major disciplines Â«Numerical AnalysisÂ» of the federal state educational standard of higher education at the educational program 11.03.04 Â«Electronics and NanoelectronicsÂ». This manual contains methodological instructions for completing laboratory work on the course Â«Numerical MethodsÂ» to supplement the theoretical course taught at SPbPU. The manual helps to practically consolidate ideas about the feasibility and accuracy of solving problems using numerical analysis, as well as to acquire skills in solving problems using numerical methods using MATLAB software and Python language tools. The material in the laboratory practicum is consistent with the lecture course and contains the theoretical information necessary for completing assignments. The manual is intended for students of the Institute of Economics and Telecommunications of St. Petersburg Polytechnic University, studying the course Â«Numerical AnalysisÂ» at the educational program 11.03.04 Â«Electronics and NanoelectronicsÂ».
SICs: Some explanations
Creators: name: Bengtsson, Ingemar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The problem of constructing maximal equiangular tight frames or SICs was raised by Zauner in 1998. Four years ago it was realized that the problem is closely connected to a major open problem in number theory. We discuss why such a connection was perhaps to be expected, and give a simplified sketch of some developments that have taken place in the past four years. The aim, so far unfulfilled, is to prove existence of SICs in an infinite sequence of dimensions.
description: 20 pages, 2 figures. Based on talks in V\"axj\"o and at Jerzy Lewandowski's birthday
Phonons in Hubbard ladders studied within the framework of the one-loop renormalization group
Creators: name: Seidel, Alexander
name: Lin, Hsiu-Hau
name: Lee, Dung-Hai
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the effects of phonons in $N$-leg Hubbard ladders within the framework of a one-loop renormalization group. In particular, we explicitly demonstrate that the role of phonons changes {\em qualitatively} even in the simplest two-leg ladder, as compared to the single-chain system where phonons always dominate. Our numerical results suggest that in the spin-gapped phase of the two-leg ladder, the opening of the spin gap by electron-electron interaction also drives the electron-phonon interaction to strong coupling, but in a {\em subdominant} fashion. Therefore, even though the inclusion of phonons does not alter the phase, their subdominant relevance strongly renormalizes some physical properties below the energy scale of the spin gap. This might shine some light on the recent experiments showing an anomalous isotope effects in high-temperature superconductors.
description: Final version to be published in Phys. Rev. B, some typos corrected, expanded title