cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Optimal Covariate Balancing Conditions in Propensity Score Estimation*
Creators: name: Fan, Jianqing
name: Imai, Kosuke
name: Lee, Inbeom
name: Liu, Han
name: Ning, Yang
name: Yang, Xiaolin
Publisher: name: Taylor & Francis
Year: 2021
Subjects: Medicine
Biotechnology
Mathematical Sciences not elsewhere classified
Cancer

description: Inverse probability of treatment weighting (IPTW) is a popular method for estimating the average treatment effect (ATE). However, empirical studies show that the IPTW estimators can be sensitive to the misspecification of the propensity score model. To address this problem, researchers have proposed to estimate propensity score by directly optimizing the balance of pre-treatment covariates. While these methods appear to empirically perform well, little is known about how the choice of balancing conditions affects their theoretical properties. To fill this gap, we first characterize the asymptotic bias and efficiency of the IPTW estimator based on the Covariate Balancing Propensity Score (CBPS) methodology under local model misspecification. Based on this analysis, we show how to optimally choose the covariate balancing functions and propose an optimal CBPS-based IPTW estimator. This estimator is doubly robust; it is consistent for the ATE if either the propensity score model or the outcome model is correct. In addition, the proposed estimator is locally semiparametric efficient when both models are correctly specified. To further relax the parametric assumptions, we extend our method by using a sieve estimation approach. We show that the resulting estimator is globally efficient under a set of much weaker assumptions and has a smaller asymptotic bias than the existing estimators. Finally, we evaluate the finite sample performance of the proposed estimators via simulation and empirical studies. An open-source software package is available for implementing the proposed methods.
Geometric Strategy for the Optimal Quantum Search
Creators: name: Miyake, Akimasa
name: Wadati, Miki
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We explore quantum search from the geometric viewpoint of a complex projective space $CP$, a space of rays. First, we show that the optimal quantum search can be geometrically identified with the shortest path along the geodesic joining a target state, an element of the computational basis, and such an initial state as overlaps equally, up to phases, with all the elements of the computational basis. Second, we calculate the entanglement through the algorithm for any number of qubits $n$ as the minimum Fubini-Study distance to the submanifold formed by separable states in Segre embedding, and find that entanglement is used almost maximally for large $n$. The computational time seems to be optimized by the dynamics as the geodesic, running across entangled states away from the submanifold of separable states, rather than the amount of entanglement itself.
description: revtex, 10 pages, 7 eps figures, uses psfrag package
Simopone occulta Bolton & Fisher, 2012, sp. n.
Creators: name: Bolton, Barry
name: Fisher, Brian L.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Simopone
Simopone occulta

description: Simopone occulta Bolton & Fisher sp. n.
(Figs 25–27)
HOLOTYPE WORKER. HL 0.78, HW 0.49, SL 0.22, EL 0.24, PW 0.37, AIIW 0.36, AIIL 0.39, AIIIW 0.44, AIIIL 0.48, WL 0.94, MFL 0.38, CI 63, SI 45, EL/HW 0.49, EP 0.76, AIIW/AIIL 0.92, AIIIW/AIIIL 0.92.
With head in full-face view the outlines of the outer margins of the eyes very nearly touch the outlines of the sides of the head. ES 0.25 and width of head across broadest part of eyes 0.49. Cephalic dorsum with scattered broad, shallow punctures. Ground sculpture almost effaced between the eyes, here and there with vestiges but without longitudinal fine striolae. Leading edge of scape with a few setae, inclined toward the scape apex. Sides of head below and behind eyes with projecting short setae, inclined anteriorly. Cephalic dorsum with a number of short setae and with a few pairs of longer setae present on the frontal carinae and above the eye. Ventral surface of head with short setae. Mesosoma in dorsal view narrowest across the mesonotum (maximum width 0.38), broadest across the propodeum (maximum width 0.39). Anterior margin of pronotum weakly marginate. Propodeal carina between dorsum and declivity extremely feebly developed, almost effaced. Entire dorsum of mesosoma with widely spaced broad, shallow punctures that are most widely spaced on the pronotum. Mesopleuron with a few punctures and a distinct transverse sulcus. In profile, dorsal surfaces of mesosoma and all abdominal tergites with numerous posteriorly curved setae. Standing setae present on middle and hind tibiae. AII (petiole) in dorsal view with a weak transverse carina both anteriorly and posteriorly; sides almost straight so that the width across the anterior margin is almost exactly the same as across the posterior margin. Dorsum of AII with scattered, shallow punctures. Tergite of AIII with more crowded punctures, so that some are adjacent; diameters of punctures always greater than the distances between them. AII and AIII longer than broad, AIV broader than long (width 0.54, length 0.47; AIVW/AIVL 1.15). Head capsule and body blackish brown to black; scapes and funiculi light brown; femora and tibiae brown.
 Holotype worker, Gabon: Prov. Ogooue-Maritime, Res. Monts Doudou, 25.2 km 304° NW Doussala, 2°13.6’S, 10°23.7’E, 14.iii. 2000, 640 m. 2246(25), CASENT0004519, beating low vegetation, rainforest (B.L. Fisher) (CASC).
 This small species appears closely related to amana, but its eyes are located farther forward on the head and there is no dense, longitudinal striolate ground sculpture between the eyes. See notes under schoutedeni.
description: Published as part of Bolton, Barry & Fisher, Brian L., 2012, Taxonomy of the cerapachyine ant genera Simopone Forel, Vicinopone gen. n. and Tanipone gen. n. (Hymenoptera: Formicidae) 3283, pp. 1-101 in Zootaxa 3283 (1) on pages 34-36, DOI: 10.11646/zootaxa.3283.1.1, http://zenodo.org/record/5249502
B1524-136: A CSS quasar with two-sided radio jets
Creators: name: Mantovani, F.
name: Saikia, D. J.
name: Bondi, M.
name: Junor, W.
name: Salter, C. J.
name: Ricci, R.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present MERLIN, global VLBI and VLBA observations of the high-luminosity, compact steep-spectrum quasar B1524$-$136 at cm wavelengths. These observations reveal well-defined radio jets on both sides of the active nucleus, a situation which is almost unique amongst high-luminosity radio quasars. However, the radio jets on opposite sides are very dissimilar, and the overall radio structure appears highly distorted. We discuss possible implications of these observations.
description: 5 pages, 3 figures, to appear in A&A Letters
Multi-Access Edge Computing Deployments for 5G Networks
Creators: name: Isiaka Mosudi
name: Zubair, Suleiman
name: Abolarinwa, Joshua
Publisher: name: figshare
Year: 2019
Subjects: subject: Computer Engineering
subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: ABSTRACTThe growth of the telecommunication industry is fast-paced with ground-breaking engineering achievements. Notwithstanding the technological advancement in the industry, it had continued to cope with the phenomenon ofresource constraint in portable mobile telecommunication devices compared to fixed and tethered devices. Portable mobile handheld devices have very low computational, storage and energy carrying capacity occasioned by the needs to satisfy portability, very small form factor, ergonomics, style and trends. Solutions such as cloudlets, cyber foraging, mobile cloud computing (MCC), and more recently but most applicable, multi-access edge computing (MEC) have been proffered with different application methodologies including computational offloading, distributed computing, thin clients, middleware, mobile environment cloning as well as representational state transfer. There is a need to satisfy requirements of new and emerging use cases, especially the deployments of 5G coming up with applications such as virtual reality (VR), augmented reality (AR), intelligent transport systems (ITS), connected autonomous vehicle (CAV), smart hospitals, ultra high definition multi-feed live streaming, etc. The usage patterns of most of these different applications, though not always, is ephemeral and on-demand, except that the demand will be numerous, huge, asymmetric and highly latency sensitive in terms of needs for computation, storage and analytics while at the fringe of the network where data are being generated and results being applied. In this research, we evaluated 5G end-to-end transport for vantage location of MEC server to achieve low user plane latency.
What Fundamental Economic and Political Change, If any, is needed for an Effective Response to Climate Change?
Creators: name: Mosashvili, Gia
Publisher: name: figshare
Year: 2019
Subjects: subject: 160605 Environmental Politics
subject: FOS: Political science
subject: 50206 Environmental Monitoring
subject: FOS: Earth and related environmental sciences
subject: Environmental Humanities

description: Climate change is one of the biggest environmental challenges in the world. According to the National Aeronautics and Space Administration (NASA), from 2006 to present, carbon dioxide (CO2 ) levels in the air has been grown to 412 parts per million and it is conditioned by human activities such as deforestation and burning fossil fuels. Also, natural processes such as respiration and volcanic eruptions have an impact on climate change. Global surface temperature significantly changed. The year of 2016 was the warmest on record after 2001. Arctic ice minimum dropped to 12.8% in a decade. National Geographic’s new polls show that global warming worries are raised in people but there still remains a huge gap between awareness and an adequate response. Because of the expected danger risks, fundamental economic and political response is necessary from the governments of states and international organizations.
Analytic stochastic treatment of a nonlinear quantum model with negative diffusion
Creators: name: Zambrini, Roberta
name: Barnett, Stephen M.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We apply a proposal of Yuen and Tombesi, for treating stochastic problems with negative diffusion, to the analytically soluble problem of the single-mode anharmonic oscillator. We find that the associated stochastic realizations include divergent trajectories. It is possible, however, to solve the stochastic problem exactly, but the averaging must be performed with great care.
description: Phys.Rev.A
Work Motivational Challenges Regarding the Interface Between Agile Teams and a Non-Agile Surrounding Organization: A case study
Creators: name: Gren, Lucas
name: Torkar, Richard
name: Feldt, Robert
Publisher: name: arXiv
Year: 2019
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: There are studies showing what happens if agile teams are introduced into a non-agile organization, e.g. higher overhead costs and the necessity of an understanding of agile methods even outside the teams. This case study shows an example of work motivational aspects that might surface when an agile team exists in the middle of a more traditional structure. This case study was conducted at a car manufacturer in Sweden, consisting of an unstructured interview with the Scrum Master and a semi-structured focus group. The results show that the teams felt that the feedback from the surrounding organization was unsynchronized resulting in them not feeling appreciated when delivering their work. Moreover, they felt frustrated when working on non-agile teams after have been working on agile ones. This study concludes that there were work motivational affects of fitting an agile team into a non-agile surrounding organization, and therefore this might also be true for other organizations.
Variable-Phase Asynchronous Cyclotron
Creators: name: Tumanyan, A.
name: Sargsyan, E.
name: Guiragossian, Z.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The conceptual design of a Variable-Phase Asynchronous Cyclotron (VPAC) is describe, which provides longitudinal bunch compression of accelerated proton or ion beams, and thus, permits high current acceleration at higher accelerator efficiency, where the possible beam losses are minimized and the accelerator's mechanical tolerances are relaxed. Beam control is assured by the ability to independently set and vary the acceleration phase and rf voltage amplitude, the inter-cavity harmonic number and the transverse focusing strength, which considerably overcome the space charge effects in each sector and turn of the proposed cyclotron. The new accelerator concept is especially suitable to accelerate intense proton beams up to 800 MeV in energy and average beam current in the 100-mA class. All accelerator elements are based on currently available and feasible technologies. To demonstrate feasibility of design, the detailed calculations and modeling of a 10-turn VPAC prototype for the production of 25.6 MeV, 100 mA proton beam are presented and the key features of the new accelerator concept are discussed.
description: 15 pages, 10 figures, 1 table
Additional file 3 of Is level of implementation linked with intervention outcomes? Process evaluation of the TransformUs intervention to increase children’s physical activity and reduce sedentary behaviour
Creators: name: Koorts, Harriet
name: Timperio, Anna
name: Abbott, Gavin
name: Arundell, Lauren
name: Ridgers, Nicola D.
name: Cerin, Ester
name: Brown, Helen
name: Daly, Robin M.
name: Dunstan, David W.
name: Hume, Clare
name: Chinapaw, Mai J. M.
name: Moodie, Marj
name: Hesketh, Kylie D.
name: Salmon, Jo
Publisher: name: figshare
Year: 2022
Subjects: Medicine
Science Policy
Biological Sciences not elsewhere classified
Cancer
Computational Biology

description: Additional file 3. TransformUs teacher survey SB + PA-I at T3. Copy of the TransformUs teacher survey for the SB + PA-I group at data collection time point 3.
Covariant Charges in Chern-Simons AdS_3 Gravity
Creators: name: Allemandi, G.
name: Francaviglia, M.
name: Raiteri, M.
Publisher: name: arXiv
Year: 2002
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We try to give hereafter an answer to some open questions about the definition of conserved quantities in Chern-Simons theory, with particular reference to Chern-Simons AdS_3 Gravity. Our attention is focused on the problem of global covariance and gauge invariance of the variation of Noether charges. A theory which satisfies the principle of covariance on each step of its construction is developed, starting from a gauge invariant Chern-Simons Lagrangian and using a recipe developed in gr-qc/0110104 and gr-qc/0107074 to calculate the variation of conserved quantities. The problem to give a mathematical well-defined expression for the infinitesimal generators of symmetries is pointed out and it is shown that the generalized Kosmann lift of spacetime vector fields leads to the expected numerical values for the conserved quantities when the solution corresponds to the BTZ black hole. The fist law of black holes mechanics for the BTZ solution is then proved and the transition between the variation of conserved quantities in Chern-Simons AdS_3 Gravity theory and the variation of conserved quantities in General Relativity is analysed in detail.
description: 30 pages, no figures. References added
The Properties of Satellite Galaxies in External Systems. I. Morphology and Structural Parameters
Creators: name: Gutierrez, C. M.
name: Azzaro, M.
name: Prada, F.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first results of an ongoing project to study the morphological, kinematical, dynamical, and chemical properties of satellite galaxies of external giant spiral galaxies. The sample of objects has been selected from the catalogue by Zaritsky et al. (1997). The paper analyzes the morphology and structural parameters of a subsample of 60 such objects. The satellites span a great variety of morphologies and surface brightness profiles. About two thirds of the sample are spirals and irregulars, the remaining third being early-types. Some cases showing interaction between pairs of satellites are presented and briefly discussed.
description: Accepted for publication in Astrophys. Journal Supp. Ser
Fluctuation Analysis of Human Electroencephalogram
Creators: name: Hwa, Rudolph C.
name: Ferree, Thomas C.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Medical Physics (physics.med-ph)
subject: Biological Physics (physics.bio-ph)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The scaling behaviors of the human electroencephalogram (EEG) time series are studied using detrended fluctuation analysis. Two scaling regions are found in nearly every channel for all subjects examined. The scatter plot of the scaling exponents for all channels (up to 129) reveals the complicated structure of a subject's brain activity. Moment analyses are performed to extract the gross features of all the scaling exponents, and another universal scaling behavior is identified. A one-parameter description is found to characterize the fluctuation properties of the nonlinear behaviors of the brain dynamics.
description: 4 pages in RevTeX + 6 figures in eps
Five-Dimrnsional Cosmological Theory of Unified Space, Time and Velocity
Creators: name: Carmeli, Moshe
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A five-dimensional cosmological theory of gravitation that unifies space, time and velocity is presented
description: 6 pages in LaTex, presented at Dark Matter 2002
Naked Singularities in Higher Dimensional Gravitational Collapse
Creators: name: Banerjee, Asit
name: Debnath, Ujjal
name: Chakraborty, Subenoy
Publisher: name: arXiv
Year: 2002
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Spherically symmetric inhomogeneous dust collapse has been studied in higher dimensional space-time and the factors responsible for the appearance of a naked singularity are analyzed in the region close to the centre for the marginally bound case. It is clearly demonstrated that in the former case naked singularities do not appear in the space-time having more than five dimension, which appears to a strong result. The non-marginally bound collapse is also examined in five dimensions and the role of shear in developing naked singularities in this space-time is discussed in details. The five dimensional space-time is chosen in the later case because we have exact solution in closed form only in five dimension and not in any other case.
description: 7 Latex pages, No figure, Revtex style
Path Integration on a Quantum Computer
Creators: name: Traub, J. F.
name: Wozniakowski, H.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study path integration on a quantum computer that performs quantum summation. We assume that the measure of path integration is Gaussian, with the eigenvalues of its covariance operator of order j^{-k} with k>1. For the Wiener measure occurring in many applications we have k=2. We want to compute an $\e$-approximation to path integrals whose integrands are at least Lipschitz. We prove: 1. Path integration on a quantum computer is tractable. 2. Path integration on a quantum computer can be solved roughly $\e^{-1}$ times faster than on a classical computer using randomization, and exponentially faster than on a classical computer with a worst case assurance. 3.The number of quantum queries is the square root of the number of function values needed on a classical computer using randomization. More precisely, the number of quantum queries is at most $4.22 \e^{-1}$. Furthermore, a lower bound is obtained for the minimal number of quantum queries which shows that this bound cannot be significantly improved. 4.The number of qubits is polynomial in $\e^{-1}$. Furthermore, for the Wiener measure the degree is 2 for Lipschitz functions, and the degree is 1 for smoother integrands.
description: 24 pages; Revision of 9/2/02 includes a query lower bound and the upper bound of $4.22 \e^{-1}$ to compute an $\e$-approximation to a path integral
On the feasibility of cooling and trapping metastable alkaline-earth atoms
Creators: name: Derevianko, Andrei
Publisher: name: arXiv
Year: 2001
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Metastability and long-range interactions of Mg, Ca, and Sr in the lowest-energy metastable $^3P_2$ state are investigated. The calculated lifetimes are 38 minutes for Mg*, 118 minutes for Ca*, and 17 minutes for Sr*, supporting feasibility of cooling and trapping experiments. The quadrupole-quadrupole long-range interactions of two metastable atoms are evaluated for various molecular symmetries. Hund's case (c) 4_g potential possesses a large 100-1000 K potential barrier. Therefore magnetic trap losses can possibly be reduced using cold metastable atoms in a stretched M=2 state. Calculations were performed in the framework of ab initio relativistic configuration interaction method coupled with the random-phase approximation.
description: 8 pages, 2 figures; to appear in PRL
Average Quasar Spectra in the Context of Eigenvector 1
Creators: name: Sulentic, J. W.
name: Marziani, P.
name: Zamanov, R.
name: Bachev, R.
name: Calvani, M.
name: Dultzin-Hacyan, D.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: [LaTeX removed] Recent work has shown that it is possible to systematize quasar spectral diversity in a parameter space called ``Eigenvector 1'' (E1). We present median AGN spectra for fixed regions of the E1 (optical) parameter space (FWHM(H-beta) vs. equivalent width ratio RFE=W(FeII4570)/W(H-beta). Comparison of the median spectra for different regions show considerable differences. We suggest that an E1-driven approach to median/average spectra emphasizes significant differences between AGN, and offers more insights into AGN physics and dynamics than a single population median/average derived from a large and heterogeneous sample of sources. We find that the H-beta broad component line profile changes in shape along the E1 sequence both in average centroid shift and asymmetry. While objects with FWHM(H-beta)< 4000 km/s are well fitted by a Lorentz function, AGN with FWHM(H-beta)> 4000 km/s are well fitted if two broad line components are used: a broad (the "classical" broad line component) and a very broad/redshifted component.
description: 1 table + 3 figures, accepted for publication in ApJL
Farmland Liquidization and Transaction Costs
Creators: name: Takahashi, Daisuke
name: Takahashi, Daisuke
Publisher: name: Unknown
Year: 2012
Subjects: subject: Land Economics/Use
subject: farmland liquidization
subject: transaction cost
subject: partial equilibrium analysis
subject: panel data analysis
subject: local community
subject: Japan

description: This paper discusses why progress in farmland liquidization through leasing has been very slow in the agricultural sector in Japan, focusing on the transaction costs related to farmland lease. First, this paper points out that transaction costs are an important constraint for farmland lease, and argues by means of a survey of related studies, why transaction costs have a strong association with farmland. Next, it explores using partial equilibrium analysis to determine how the aggregated demand and supply of farmland is affected by the changes in the farmers’ activities that face a transaction cost. Following this, the paper estimates the extent to which farmland lease is affected by the characteristics of the farmland and local communities. The data used in the analysis is the prefectural panel data from the agricultural census for the years 1980, 1990, and 2000; the data excludes Hokkaido, Tokyo, Kanagawa, Osaka, and Okinawa. The result of the econometric analysis shows that the level of farmland lease is related to the variables representing the activities of local communities and the characteristics of farmland such as land improvement and conversion of farmland. These results emphasize the importance of developing and reinforcing institutions and organizations to lower the transaction costs in the farmland market.
Shock and Livestock Transactions in Rural Zambia: a Re-examination of the Buffer Stock Hypothesis
Creators: name: Miura, Ken
name: Kanno, Hiromitsu
name: Sakurai, Takeshi
name: Miura, Ken
name: Kanno, Hiromitsu
name: Sakurai, Takeshi
Publisher: name: Unknown
Year: 2012
Subjects: subject: International Development
subject: asset smoothing
subject: buffer stock
subject: weather risk
subject: livestock
subject: Sub-Saharan Africa

description: This study re-examines the buffer stock hypothesis regarding livestock by taking into account differences in wealth level, asset types, and periods after a shock. This paper takes advantage of a unique panel data set of agricultural households in Southern Province, Zambia. The data were collected by weekly interviews of 48 sample households from November 2007 to December 2009, covering two crop years in which an unusually heavy rainfall event took place. If we consider delayed responses to the heavy rain shock, our econometric analyses support the buffer stock hypothesis for cattle as well as small livestock. Overall, this paper suggests that conventional annual data sets used in the existing literature may miss the period-dependent transactions of assets after a shock.
Development of a Gas Chromatography Tandem Mass Spectrometry-Based Analytical Method for the Quantitative Determination of Organochlorine Pesticide Residues in Potato Crops
Creators: name: Sarvendra Pratap Singh
name: Sharma, Jyoti
name: Prakash, Pragya
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: Plant Biology

description: A method validation study has been performed to analyze organochlorine pesticide residues in potato and sweet potato using gas chromatography-tandem mass spectrometry in a selective ion reaction monitoring (SRM) mode of GC-MS/MS scans. The method (QuEChERS) has been validated in compliance with the European SANTE. The validation parameters were assessed to verify the method’s fitness for the targeted analysis, and the obtained results were observed in the range of the criteria mentioned in the validation guidelines. The optimized method was utilized for the organochlorine pesticide analysis in potatoes and sweet potatoes. The analyzed samples were minimal in their pesticide content as per the standards; it has shown great effectiveness by offering excellent results in terms of accuracy (70-120 % recovery) and precision (<20 %), and retention time (13.5 minutes). As the analysis was well linearized with a regression coefficient of >0.99, it holds a much-reduced maximum relative standard deviation (RSD) of <6 %. The method can be utilized for the twentytwo organochlorine pesticides in potato and sweet potato.
A 10-day ASCA Observation of the Narrow-line Seyfert~1 galaxy IRAS 13224-3809
Creators: name: Dewangan, G. C.
name: Boller, Th.
name: Singh, K. P.
name: Leighly, K. M.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) We present an analysis of a 10-day continuous ASCA observation of the narrow-line Seyfert 1 galaxy IRAS 13224-3809. The soft (0.7-1.3 keV) and hard (1.3-10 keV) X-ray band light curves binned to 5000s reveal trough-to-peak variations by a factor >25 and 20, respectively. The light curves in the soft and hard bands are strongly correlated without any significant delay. However, this correlation is not entirely due to changes in the power-law flux alone but also due to changes in the soft X-ray hump emission above the power law. The presence of a soft X-ray hump below 2 keV, previously detected in ROSAT and ASCA data, is confirmed. Time resolved spectroscopy using daily sampling reveals changes in the power-law slope, with Gamma in the range 1.74-2.47, however, day-to-day variations in Gamma are not significant. The Soft hump emission is found to dominate the observed variability on a timescale of a week, but on shorter timescales (20000s) the power-law component appears to dominate the observed variability. Flux resolved spectroscopy reveals that at high flux levels the power law becomes steeper and the soft hump more pronounced. The steepening of the photon index with the fluxes in the soft and hard bands can be understood in the framework of disk/corona models in which accretion disk is heated by viscous dissipation as well as by reprocessing of hard X-rays following an X-ray flare resulting from coronal dissipation through magnetic reconnection events.
description: 29 pages, 16 figures, To apear in A&A
The Impact of Land Fragmentation on Rice Production Cost and Input Use
Creators: name: Kawasaki, Kentaro
name: Kawasaki, Kentaro
Publisher: name: Unknown
Year: 2011
Subjects: subject: Productivity Analysis
subject: economies of size
subject: farmland fragmentation
subject: panel data
subject: factor demands
subject: stochastic frontier cost function

description: This article estimated the impacts of land fragmentation on production costs and input demands using panel data of Japanese rice farms. Empirical results reveal that fragmentation increases production costs and offsets economies of size, and that these impacts are strong especially for large size farms. This result implies that as the farm gets larger, emphasis should be switched from increasing size to the settlement of fragmentation, in order to enhance efficiency. Moreover, it was demonstrated that fragmentation increases not only fuel inputs and labor hours for weeding and harvesting as generally accepted, but also managerial labor such as bookkeeping and meeting, and materials such as fertilizers and pesticides probably due to the substitution effects from labor. The range of fragmentation's impacts is spread beyond our scope. This result implies that the settlement of fragmentation will bring not only the reduction of production cost but also an environmental benefit by reducing fertilizers and pesticides.
Unusual plasma and particle signatures at Mars and STEREO-A related to CME-CME interaction
Creators: name: Dumbovic, Mateja
name: Guo, Jingnan
name: Temmer, Manuela
name: Mays, M. Leila
name: Veronig, Astrid
name: Heinemann, Stephan
name: Dissauer, Karin
name: Hofmeister, Stefan
name: Halekas, Jasper
name: Möstl, Christian
name: Amerstorfer, Tanja
name: Hinterreiter, Jürgen
name: Banjac, Sasa
name: Herbst, Konstantin
name: Wang, Yuming
name: Holzknecht, Lukas
name: Leitner, Martin
name: Wimmer-Schweingruber, Robert F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: On July 25 2017 a multi-step Forbush decrease (FD) with the remarkable total amplitude of more than 15\% was observed by MSL/RAD at Mars. We find that these particle signatures are related to very pronounced plasma and magnetic field signatures detected in situ by STEREO-A on July 24 2017, with a higher than average total magnetic field strength reaching more than 60 nT. In the observed time period STEREO-A was at a relatively small longitudinal separation (46 degrees) to Mars and both were located at the back side of the Sun as viewed from Earth. We analyse a number of multi-spacecraft and multi-instrument (both in situ and remote-sensing) observations, and employ modelling to understand these signatures. We find that the solar sources are two CMEs which erupted on July 23 2017 from the same source region on the back side of the Sun as viewed from Earth. Moreover, we find that the two CMEs interact non-uniformly, inhibiting the expansion of one of the CMEs in STEREO-A direction, whereas allowing it to expand more freely in the Mars direction. The interaction of the two CMEs with the ambient solar wind adds up to the complexity of the event, resulting in a long, sub-structured interplanetary disturbance at Mars, where different sub-structures correspond to different steps of the FD, adding-up to a globally large-amplitude FD.
description: 25 pages, 9 figures
Additional file 1 of Mass cytometry reveals immune atlas of urothelial carcinoma
Creators: name: Zhang, Qing
name: Zhang, Wenlong
name: Lin, Tingsheng
name: Lu, Wenfeng
name: He, Xin
name: Ding, Yuanzhen
name: Chen, Wei
name: Diao, Wenli
name: Ding, Meng
name: Shen, Pingping
name: Guo, Hongqian
Publisher: name: figshare
Year: 2022
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 1: Supplementary Table 1. Summary of the characteristics of 14 patients. Supplementary Table 2. Summary of the metal-conjugated antibodies used in the study. Supplementary Figure S1. Gating strategy to identify T cells and TAMs. Supplementary Figure S2. T cell characteristics of urothelial carcinoma, related to figure 3. Supplementary Figure S3. TSNE visualization showing the normalized expression of indicated markers in tumor tissues and paratumor tissues. Supplementary Figure S4. Pathway analysis of on the upregulated and downregulated DEGs of CD38+TAMs and CD38-TAMs. Supplementary Figure S5. Heatmap showing Spearman coefficients of correlation for relationships between TAMs and T cells, related to figure 5.
Chemometrics Assisted QuEChERS Extraction Method for the Residual Analysis of Organophosphate Insecticides: Application to Their Dissipation Kinetics in Open Field Ecosystem
Creators: name: S.T. Narenderan
name: S.N. Meyyanathan
name: Karri, Veera Venkata Satyanarayana Reddy
name: B. Babu
name: Pavankumar Chintamaneni
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: Plant Biology

description: The present study aimed to investigate the dissipation kinetics and residual levels of five organophosphate pesticides in a carrot- and potato-field ecosystem by sensitive and selective liquid chromatography-tandem mass spectrometry method. The optimization of the modified QuEChERS extraction method was carried out using the cost-effective chemometric tool equipped with Plackett-Burman and central composite designs. Based on the response surface methodology the optimized conditions were found to be 56.5 mg of primary secondary amine sorbent, 1.53 g of sodium chloride, and 213 mg of C18. The average recoveries of the method were obtained over the range of 81.6 to 96.0 % with a relative standard deviation < 14.7 %. The detection and quantification limit ranged from 0.7 to 1.0 μg/kg and 1.0 to 5.0 μg/kg, respectively. The data showed that the first-order model was the best fit for the dissipation of five organophosphate pesticides with a regression coefficient of more than 0.99. The half-lives for all the studied pesticides were below 6.6 and 5.1 days for carrot and potato, respectively. The harvesting intervals for pesticides on the carrot and potato fields were within 28 and 21 days, respectively. The study results contribute to establishing the scientific basis of the dosage for organophosphate pesticide use in the vegetable field.
The impact of ESG practices on Carbon emissions: Insights and evidence from the CAC40 ESG
Creators: name: ACHARGUI Karam
name: AMZIL Laila
Publisher: name: Zenodo
Year: 2025

description: This research examines the effects of sustainable investment practices on environmental regulation by assessing the impact of ESG criteria on carbon dioxide (CO2) emissions.  A rigorous literature review and modeling are carried on in order to determine the relationship between ESG criteria and CO2 emissions. We use empirical data from the Refinitiv database concerning CAC40 ESG companies over the period 2010-2020 to determine the relationship between ESG criteria and CO2 emissions across different economic sectors. The methodology includes statistical analyses such as maximum likelihood, principal component analysis and factorial analysis method to measure the impact of sustainability practices on environmental degradation. By integrating these various disciplinary aspects, our research offers valuable insights into how financial decisions can contribute to reducing environmental degradation and promoting a sustainable economy.
Solutions to the Lorentz force equation with fixed charge-to-mass ratio in globally hyperbolic spacetimes
Creators: name: Caponio, E.
name: Minguzzi, E.
Publisher: name: arXiv
Year: 2002
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We extend the classical Avez-Seifert theorem to trajectories of charged test particles with fixed charge-to-mass ratio. In particular, given two events x_{0} and x_{1}, with x_{1} in the chronological future of x_{0}, we find an interval I=]-R,R[ such that for any q/m in I there is a timelike connecting solution of the Lorentz force equation. Moreover, under the assumption that there is no null geodesic connecting x_0 and x_1, we prove that to any value of |q/m| there correspond at least two connecting timelike solutions which coincide only if they are geodesics.
description: AMS-Latex, 9 pages
Stochastic Dynamic Mass Spectrometric Approach to Quantify Reserpine in Solution
Creators: name: Ivanova, Bojidarka
name: Spiteller, Michael
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Statistics

description: In the current paper, we further search for certainty of our innovative stochastic dynamic (SD) simplistic model formula D”SD = 2.6388.10-17. (2>-2) connecting among the so-called mass spectrometric SD diffusion parameter DSD parameter, the mass spectrometric measurable variable intensity, and the analyte concentration in solution. Since this equation has been derived more recently from our basic, but a more complex, formula for a large number of practical purposes of the analytical chemistry such a simplistic relationship is sufûcient significantly. Therefore, the motivation behind this work is further experimental justiûcation of the validity of this formula that is required in order to successfully apply the new model to the analytical practice. The quantification is carried out by studying reserpine (1) in solution at an analyte concentration of ng.(mL)-1. The capability of the model equation to express quantitatively the analyte concentration in solution is tested with independent chromatographic analysis. Correlation between chromatographic and mass spectrometric (MS) data is carried out by means of chemometrics. The diffusion parameters according to our stochastic dynamic concept and the simplistic model formula presented above and the corresponding diffusion data according to the current monitoring method (CMM) are correlated mutually, as well.
title: Αποτίμηση και ανασχεδιασμός υφιστάμενου κτιρίου από φέρουσα τοιχοποιία & διερεύνηση μεθόδων επέμβασης για τη σεισμική συμπεριφορά του
title: Evaluation and redesign of an existing masonry structure & investigation of intervention methods for seismic behavior
Creators: name: Δαγαρακης Ανδρεας
Publisher: name: Technical University of Crete
Year: 2021

description: Οι κατασκευές από φέρουσα τοιχοποιία αποτελούν την πιο διαδεδομένη κατηγορία κατασκευών παγκοσμίως. Μέχρι και τις αρχές του 20ου αιώνα και την επικράτηση του χάλυβα και του σκυροδέματος, αποτελούσε το κύριο υλικό δόμησης. Αυτό έχει ως αποτέλεσμα η συντριπτική πλειοψηφία των διατηρητέων κτιρίων και μνημείων να είναι κατασκευασμένα από φέρουσα τοιχοποιία. Τα τελευταία χρόνια στα πλαίσια προστασίας της πολιτισμικής κληρονομιάς, έχει γίνει μια σημαντική προσπάθεια επιστημονικής προσέγγισης της στατικής και σεισμικής απόκρισης κατασκευών από φέρουσα τοιχοποιία. Η παρούσα μελέτη παρουσιάζει μια εκτεταμένη βιβλιογραφική επισκόπηση των διαφορετικών τύπων κατασκευών από φέρουσα τοιχοποιία καθώς και τις μεθόδους προσομοίωσης, αποτίμησης και ελέγχου αυτών. Στη συνέχεια, οι αρχές αυτές εφαρμόζονται σε ένα υφιστάμενο διατηρητέο παραδοσιακό κτίριο σε οικισμό του δήμου Ρεθύμνου, όμως χαρακτηρισμένο ως μη παραδοσιακό οικισμό, για την αποτίμηση της υπάρχουσας κατάστασής του και την διερεύνηση τριών διαφορετικών μεθόδων ενίσχυσης. Διερευνώνται τρεις διαφορετικές μέθοδοι ενίσχυσης, για την βελτίωση της φέρουσας ικανότητας του κτιρίου, ώστε αυτός να είναι σε θέση να φέρει έναν επιπρόσθετο όροφο. Οι υπό εξέταση μέθοδοι ενίσχυσης είναι η ενίσχυση με τοπικά ενέματα, ενίσχυση με Ινοπλισμένο Πλέγμα Ανόργανης Μήτρας (ΙΑΜ), καθώς και ενίσχυση της διαφραγματικής λειτουργίας του φορέα. Τέλος στην οικονομοτεχνική μελέτη γίνεται αναλυτική περιγραφή των εργασιών ενίσχυσης και του κόστους κάθε επέμβασης.
description: Unreinforced masonry structures are the most widespread type of structures
around the world. Until the beginning of the 20th century, when steel and concrete dominate the market share, masonry was the main structural material. This resulted to most of the cultural heritage buildings, being constructed with unreinforced masonry. Recent years, within the cultural heritage preservation campaign, there has been an effort to approach the static and seismic behavior of structures of unreinforced masonry. The current study presents an extensive bibliographic review of the different type of structures from unreinforced masonry, as well as methods of modelling and assessment of them. Afterwards those principles are applied to an existing traditional building, located in a village of the Municipality of Rethymnon, in order to assess its current state. Three different type of structural reinforcement are examined, so that the structure can withstood the construction of an additional floor on top of it. The examined methods are grouting, reinforcement with Textile Reinforced Mortar (TRM), as well as reinforcement of the rigid diaphragm. Finally, the reinforcement operation and its estimated cost, is described and calculated in the economic and technical study.
Social Embeddedness in Economic Transactions through Informal Institutions in Rural China
Creators: name: Asami, Atsuyuki
name: Asami, Atsuyuki
Publisher: name: Unknown
Year: 2011
Subjects: subject: International Development
subject: gift giving
subject: instrumental guanxi ties
subject: expressive guanxi ties
subject: village boundary
subject: informal social institutions
subject: transactions
subject: self-enforceable

description: The economic transactions in rural China are self-enforceable without any legal enforcement because they are embedded in the informal social institutions based on gift giving guanxi ties. These ties are of two types—expressive guanxi ties based on reciprocal gift exchange and instrumental guanxi ties based on unidirectional gift giving. In this paper, we first prove theoretically that gift giving is a result of rational conduct that minimizes expenditure. Thereafter, a few hypotheses are proposed and empirically tested through categorical regression and analysis of micro level data. We find that expressive guanxi ties are not related to income level but instrumental guanxi ties are related to income level. In other word, we verify the rationality of informal institutions in rural China. It is implied that under a situation whrein the cost of transition from informal to formal social institutions for economic transaction is prohibitive, the present informal human governance based on gift giving will continue to be employed by Chinese villagers, because it is an intrinsically rational system.
Risk Aversion and Optimal Input Utilization under State Contingent Technology
Creators: name: Kusadokoro, Motoi
name: Kusadokoro, Motoi
Publisher: name: Unknown
Year: 2010
Subjects: subject: Risk and Uncertainty
subject: uncertainty
subject: pesticide
subject: fertilizer
subject: state contingent technology
subject: degree of risk-aversion
subject: pure-risk effect
subject: expansion effect
subject: marginal revenue-cost function

description: The theory of production under uncertainty predicts that, in a single input case, a risk-averse farmer with fair insurance increases fertilizer and decreases pesticide. However, empirical studies do not always support the theoretical predictions. Chambers and Quiggin presented state contingent technology and a method to decompose the difference of optimal revenues between farmers with different risk attitudes to the pure-risk effect and the expansion effect. The theory has potential to explain the ambiguous results in the empirical studies. However, because their analyses only considered risk-averse vs. risk-neutral farmers and assumed some restrictive conditions on the technology, the implication was limited. This paper aims to address these weaknesses. An alternative method of decomposition is introduced to consider the degree of risk-aversion. Local property of marginal revenue-cost function is discussed to examine the sign of expansion effect under more general conditions of technology. This paper provides a theoretical basis for the ambiguity in the empirical studies.
Spatial Quantum State Tomography with A Deformable Mirror
Creators: name: Kravtsov, K. S.
name: Zhutov, A. K.
name: Kulik, S. P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Quantum tomography is an essential experimental tool for testing any quantum technology implementations. Transverse spatial quantum states of light play a key role in many experiments in the field of quantum information as well as in free-space optical communications. In this letter we propose and experimentally demonstrate the tomography of spatial quantum states with a deformable mirror. It may be used to significantly outperform the conventional method with a spatial light modulator (SLM) in terms of speed and efficiency, at the same time providing polarization insensitive operation.
description: 7 pages, 4 figures