cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Flat top and giant enhancement absorption in S4 Fibonacci quasi photonic crystals including MoS2 photovoltaic layers
Creators: name: Ensiyeh Mohebbi
name: Ansari, Narges
name: Iradmousa, Fatemeh Keramat
Publisher: name: figshare
Year: 2019
Subjects: subject: 20201 Atomic and Molecular Physics
subject: FOS: Physical sciences
subject: 20504 Photonics, Optoelectronics and Optical Communications

description:  Molybdenum Disulfide, MoS2, layers among two dimensional atomic family structures shows potential use for application in photovoltaic devices. However, their absorption intensity and wavelength range need improvement. In this paper, to increase the absorption intensity with flat top absorption profile, the MoS2 monolayer is inserted in S4 Fibonacci quasi photonic crystal together with other dielectric layers, e.g. Si and SiO2. We found that the S4 thickness will differ for designing of the structure based on either of resonance peaks of MoS2 monolayer. Based on three resonance peaks of MoS2, three structures designed for S4 and their absorption for normal incidence based on transfer matrix method are calculated. Finally, S4 Fibonacci structure with 609 nm of designed wavelength and 12 times periodicity demonstrates giant absorption above 90% with flat top profile between 605 and 665 nm as the best achievement.
Biodegradation of dibutyl phthalate by a novel endophytic Bacillus subtilis strain HB-T2 under in-vitro and in-vivo conditions
Creators: name: Xu, Wen-Jun
name: Wan, Qun
name: Wang, Wen-Feng
name: Wang, Ya
name: Feng, Fa-yun
name: Cheng, Jin-Jin
name: Yuan, Jian-Jun
name: Yu, Xiang-Yang
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: The environmental prevalence and potential toxicity of dibutyl phthalate (DBP) motivate the attempt to develop feasible strategies to deal with DBP contamination. In this study, a strain of endphytic bacteria HB-T2 was isolated from sorrel roots and identified as Bacillus sp. by analysing its morphology, physiology, biochemistry and 16S rDNA sequence. The degradation efficiency of DBP by HB-T2 was almost identical under the temperature of 30∼40°C, but was significantly enhanced as the culture pH and inoculum size increases from 6.0 to 8.0, and 1% to 5% respectively. The degradation kinetics of DBP could be well described by the first-order kinetic model, with the degradation half-life ranging from 1.59 to 7.61 h when the initial concentrations of DBP were in the range of 5–20 mg/L. LC-MS analysis of the culture samples taken at varying intervals revealed monobutyl phthalate, phthalic acid and protocatechuic acid as the major metabolic intermediates during the degradation process. HB-T2 exhibited an excellent capability to degrade a wide range of phthalate esters (PAEs), especially butyl benzyl phthalate (BBP), dipentyl phthalate (DPP), and diisobutyl phthalate (DIBP). Inoculation of HB-T2 into Chinese cabbage (Brassica chinensis L.) growing in DBP-contaminated soils could significantly reduce the DBP levels in plant tissues and relieve the phytotoxic effects of DBP. Results of this study highlighted the great potential of this novel endophytic Bacillus subtilis strain HB-T2 for bioremediation of PAEs contamination and improvement of agricultural product safety by reducing PAEs accumulation in edible crops.
DT-MODELS
Creators: name: Priyadarshani, Dinusha
name: Huynh, Huu-Dinh
name: Altwegg, Res
name: Hwang, Wen-Han
Publisher: name: Zenodo
Year: 2023

description: The codes required to fit the models to data: Priyadarshani, D., Huynh, H.D., Altwegg, R., & Hwang, W. H. A unified framework for time-to-detection occupancy and  abundance models.
Exponential lower bound on the highest fidelity achievable by quantum error-correcting codes
Creators: name: Hamada, Mitsuru
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: On a class of memoryless quantum channels which includes the depolarizing channel, the highest fidelity of quantum error-correcting codes of length n and rate R is proven to be lower bounded by 1-exp[-nE(R)+o(n)] for some function E(R). The E(R) is positive below some threshold R', which implies R' is a lower bound on the quantum capacity.
description: Ver.4. In vers.1--3, I claimed Theorem 1 for general quantum channels. Now I claim this only for a slight generalization of depolarizing channel in this paper because Lemma 2 in vers.1--3 was wrong; the original general statement is proved in quant-ph/0112103. Ver.5. Text sectionalized. Appeared in PRA. The PRA article is typographically slightly crude: The LaTeX symbol star, used as superscripts, was capriciously replaced by the asterisk in several places after my proof reading
A Highly Sensitive Square-wave Adsorptive Anodic Stripping Voltammetry for Trace Determination and Speciation of Palladium at Bismuth Film Modified Glassy Carbon Electrode using 1,2 Dihydroxy-cyclobut-1,2-ene 3,4 dione Schiff Base Reagent
Creators: name: Al-Harbi, Eman A.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Inorganic Chemistry

description: The detection of precious metal ion moieties is of utmost significance for environmental control. Thus, the current study provides a low cost and highly-accurate square wave adsorptive anodic stripping voltammetric procedure (SW-AdASV) at a Bi film (BiF/GCE) for the analysis of the lower levels of palladium (II) ions. The proposed SW-AdASV methodology was based on the selective accumulation of the palladium (II) chelat of the newly Schiff base reagent of 1,2 dihydroxy-cyclobut-1,2-ene-3,4-dione (DCED) in a universal buffer of pH=2-3. Under the optimized analytical parameters, the plot of the palladium (II) concentration versus the corresponding anodic peak current was linear over a wide range of [5×10-9 – 2.5×10-6 molL-1 Pd] with a correlation coefficient of R2=0.9995 and excellent repeatability with RSDs of (3.3-3.8%) (n=5). In the SW-AdASV approach, the lower limits of detection (LOD) and quantitation (LOQ) as calculated were discovered to be 1.07×10-9 and 3.57×10-9 molL-1, respectively. The current sensor offered interference from several active metal ions, such as Hg2+ and Cd2+. Lastly, the developed SW-AdASV method with (BiF/GCE) was successfully applied for the detection of lower levels of Pd2+ in water. Furthermore, this procedure presents a sensitive, accurate process with short analytical time, ruggedness, robustness, and reproducibility.
Estimation of Consumer Welfare Change from the Revision of Age Criterion for BSE Testing: Hypothetical Revealed Preference Method Using Monitoring Survey Data
Creators: name: Yamane, Fumihiro
name: Yamane, Fumihiro
Publisher: name: Unknown
Year: 2010
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: BSE testing
subject: age criterion revision
subject: meat demand analysis
subject: hypothetical revealed preference method
subject: consumer welfare effect

description: The subject of this paper is to estimate consumers' welfare loss when the BSE testing age criterion for cattle is revised from all months to older than 21 months, by analyzing the change in meat demand due to this revision. However this analysis is different from ordinary revealed preference methods in that the demand data after this policy change are stated, while the data before this change are revealed as usual. This is because this paper focuses on a policy change which is not substantially executed yet. Using this demand data I estimated the generalized corner solution model of Phaneuf et al. (2000) for an incomplete demand system model. When I simulated each monitor's welfare loss based on the model estimation result, the expected compensating variation per household per month was 214 yen at the sample mean and 55 yen at the sample median.
CFD modeling of a PEM water electrolyzer: relationship between flow regime number and performance
Creators: name: CHENG, TIANLIANG
name: Beale, Steven
name: Kadyk, Thomas
name: Eikerling, Michael
Publisher: name: Forschungzentrum Jülich
Year: 2023

description: 19th Symposium on Fuel Cell and Battery Modeling and Experimental Validation, ModVal, Duisburg, Germany, 21 Mar 2023 - 23 Mar 2023
description: The relationships between operating conditions, two-phase flow regime in the anode channel, and performance of a polymer electrolyte membrane water electrolyzer (PEMWE) is not well understood. These relationships are important for optimizing cell operation in view of power consumption and stability. To address this issue, a model for the interplay of the relative velocity between the two phases and the bubble diameter in the anode channel is developed. It accounts for the effect of current density on the bubble diameter using fitting to experimental data as input [1]. This model is coupled with the electro-chemical kinetics in catalyst layers to perform 3-D computational fluid dynamics (CFD) simulations of a PEMWE (Fig. 1) in the open-source platform OpenFOAM. The operating point is defined by the average area current density i, and the water stoichiometry λ. The two-phase flow regime is quantified by the normalized flow regime number, frn*, and the cell performance is characterized by the cell voltage, U. The model is compared to the experimental data of two-phase flow reported in Ref. [2]. Results show that the frn* provides a criterion to distinguish the three main flow regimes (bubbly, plug, and slug). Simulation results help furnish relationships between operating point, flow regime and cell performance. The best cell performance (lowest cell voltage) is found to occur at the highest water stoichiometry, λ = 1000, in simulations, where the bubbly flow regime prevails for current densities from 0.1 A/cm2 to 2.0 A/cm2. Slug flow with the highest value of frn* appears at 0.8 A/cm2 with the lowest water stoichiometry 100 (Fig. 2) due to the high oxygen volume fraction. Among other findings, it demonstrates that the water stoichiometry should be increased to decrease cell voltage and oxygen bubble sizes in the anode channel. This work provides important basic trends and limiting values for cell operation.
Malware Detection using Machine Learning and Deep Learning
Creators: name: Rathore, Hemant
name: Agarwal, Swati
name: Sahay, Sanjay K.
name: Sewak, Mohit
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Research shows that over the last decade, malware has been growing exponentially, causing substantial financial losses to various organizations. Different anti-malware companies have been proposing solutions to defend attacks from these malware. The velocity, volume, and the complexity of malware are posing new challenges to the anti-malware community. Current state-of-the-art research shows that recently, researchers and anti-virus organizations started applying machine learning and deep learning methods for malware analysis and detection. We have used opcode frequency as a feature vector and applied unsupervised learning in addition to supervised learning for malware classification. The focus of this tutorial is to present our work on detecting malware with 1) various machine learning algorithms and 2) deep learning models. Our results show that the Random Forest outperforms Deep Neural Network with opcode frequency as a feature. Also in feature reduction, Deep Auto-Encoders are overkill for the dataset, and elementary function like Variance Threshold perform better than others. In addition to the proposed methodologies, we will also discuss the additional issues and the unique challenges in the domain, open research problems, limitations, and future directions.
description: 11 Pages and 3 Figures
Untitled ItemDesign of structures including MoS2 monolayer with low absorption at THz range for application in transparent electrodes
Creators: name: Ensiyeh Mohebbi
name: Ansari, Narges
Publisher: name: figshare
Year: 2019
Subjects: subject: 20404 Electronic and Magnetic Properties of Condensed Matter; Superconductivity
subject: FOS: Physical sciences

description: Two-dimensional Molybdenum disulfide, MoS2, crystal has attracted intense attention for its application in the THz optoelectronics and can be used for transparent electrode in the nanoscale research area. In this paper, we design structures including MoS2 monolayer on different substrates and different layer positions in one-dimensional photonic crystals (1DPCs) toward decreasing the optical absorption. The THz refractive index of MoS2 taken from Drude model is calculated. Transmission and absorption spectra in the THz range for either of TE or TM modes is calculated based on the transfer matrix method (TMM). In continue we show that the absorption spectrum can be tuned by changing different materials and incident angles for either of TE or TM modes. We finally in our best design achieved absorption smaller than MoS2 monolayer and nearly 100% transmission. Such results are useful for application in nano-bulding blocks including transparent electrode in future photonics and electronics devices.
A new, cleaner colour-magnitude diagram for the metal-rich globular cluster NGC 6528 - Velocity dispersion in the Bulge, age and proper motion of NGC 6528
Creators: name: Feltzing, Sofia
name: Johnson, Rachel
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using two epochs of HST/WFPC2 images of the metal-rich globular cluster NGC 6528 we derive the proper motions of the stars and use them to separate the stars belonging to NGC 6528 from those of the Galactic bulge. The stellar sequences in theresulting colour-magnitude diagram for the cluster are significantly better determined than in previously published data. From comparison of the colour-magnitude diagram with the fiducial line for NGC 6553 from Zoccali et al. (2001) we conclude that the two globular clusters have the same age. Further, using alpha-enhanced stellar isochrones, NGC 6528 is found to have an age of 11+-2 Gyr. This fitting of isochrones also give that the cluster is 7.2 kpc away from us. From the measured velocities both the proper motion of the cluster and the velocity dispersion in the Galactic bulge are found. NGC 6528 is found to have a proper motion relative to the Galactic bulge of mu_l=0.006 and mu_b=0.044 arcsec per century. Using stars with 14
description: 19 pages, Latex, A&A macro included, 3 ascii tables included (to be published electronically in the journal) . A&A in press
Identification of Progesterone in the Banana Inflorescence of Musa paradisiaca L. Species by Using HPTLC and GC-MS Techniques
Creators: name: Payal R. Kalwar
name: Kolte, Satish S.
name: Thaker, Karan
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Plant Biology
subject: 60506 Virology

description: Progesterone is a mammalian gonadal hormone which is generally present in plant samples in trace amount. In the present study, progesterone was identified in the ethanol extract of the banana inflorescence of Musa paradisiaca. L species by HPTLC method and silica part from HPTLC plates were scrapped and subjected to GC-MS analysis which further confirms the presence of progesterone. Preliminary phytochemical evaluation, mineral content, HPTLC fingerprinting, and steroid analysis of banana inflorescence is also done. HPTLC fingerprinting results of the ethanolic extract can be used as a diagnostic tool for the correct identification of the plant and as a phytochemical marker.
Bounds on Stringy Quantum Gravity from Low Energy Existing Data
Creators: name: Sudarsky, Daniel
name: Urrutia, Luis
name: Vucetich, Héctor
Publisher: name: arXiv
Year: 2002
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that existing low energy experiments, searching for the breaking of local Lorentz invariance, set bounds upon string theory inspired quantum gravity models that induce corrections to the propagation of fields. In the D-particle recoil model we find M > 1.2 x 10^5 M_P and v < 2 x 10^{-27}c for the mass and recoil speed of the D-particle, respectively. These bounds are \~10^8 times stronger than the latest astrophysical bounds. These results indicate that the stringy scenario for modified dispersion relations is as vulnerable to these types of tests as the loop quantum gravity schemes.
description: 12 pages, RevTeX. Revised version
Redshifts versus paradigm shifts; against renaming Hubble's Law
Creators: name: O'Raifeartaigh, Cormac
name: O'Keeffe, Michael
Publisher: name: arXiv
Year: 2019
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: We consider the proposal by many scholars and by the International Astronomical Union to rename Hubble's law as the Hubble-Lemaitre law. We find the renaming questionable on historic, scientific and philosophical grounds. From a historical perspective, we argue that the renaming presents an anachronistic interpretation of a law originally understood as an empirical relation between two observables. From a scientific perspective, we argue that the renaming conflates the redshift/distance relation of the spiral nebulae with a universal law of spatial expansion derived from the general theory of relativity. We note that the first of these phenomena is merely one manifestation of the second, an important distinction that may be relevant to contemporary puzzles concerning the current rate of cosmic expansion. From a philosophical perspective, we note that many of the named laws of science are empirical relations between observables, limited in range, rather than laws of universal application derived from theory.
description: Revised, edited version. Accepted for publication in Physics in Perspective
Blunting the Spike: the CV Minimum Period
Creators: name: King, A. R.
name: Schenker, K.
name: Hameury, J. M.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The standard picture of CV secular evolution predicts a spike in the CV distribution near the observed short-period cutoff P_0 ~ 78 min, which is not observed. We show that an intrinsic spread in minimum (`bounce') periods P_b resulting from a genuine difference in some parameter controlling the evolution can remove the spike without smearing the sharpness of the cutoff. The most probable second parameter is different admixtures of magnetic stellar wind braking (at up to 5 times the GR rate) in a small tail of systems, perhaps implying that the donor magnetic field strength at formation is a second parameter specifying CV evolution. We suggest that magnetic braking resumes below the gap with a wide range, being well below the GR rate in most CVs, but significantly above it in a small tail.
description: 5 pages, 4 figures; accepted for publication in MNRAS
Tenancy Contract Choice and Land Improvement Investment for Upland Farming
Creators: name: Nakajima, Shinsaku
name: Nakajima, Shinsaku
Publisher: name: Unknown
Year: 2010
Subjects: subject: Land Economics/Use
subject: tenancy contract choice
subject: relationship-specific investment
subject: incomplete contract
subject: holdup problem
subject: beneficial expense
subject: trust
subject: opportunistic behavior

description: Relationship-specific investment in land improvement (e.g. deep plowing and soil dressing) is necessary for upland farming. If farmers leasing farmland are in an environment where they are able to freely decide whether or not to invest in land improvement, no problem arises. However, if their intention to invest in land improvement is inhibited by some factors, the problem of inefficient farming due to underinvestment may arise. The problem of underinvestment is most likely to occur under off-the-record farming contracts (yami kosaku), which are a type of “incomplete contract” in the sense that the contract period is not predetermined. Because of incomplete contracts, farmers are unwilling to invest since they cannot predict if they will recoup their investment value while being open to eviction threats (i.e. holdup problem). Based on these points, this paper aims to analyze the empirical determinants on contract type (i.e. establishing right of use basis, or off-the-record contract basis) and the farmers'investment choice in land improvement, using original data from Atsumi-cho, Aichi Prefecture. The main findings are as follows. First, use-right contracts encourage farmers to invest in the leased land. It was indicated that the type of contract influences the incentive for land investment. Second, it was also found that the degree of trust (e.g. kinship and proximity) between the landowner and the farmer positively influences land investment. The third finding was that the degree of opportunity cost regarding the landowner's flexibility to engage in farming also influences contract choice. Landowners not likely to engage in agriculture were highly inclined to opt for use-right contracts. These findings call for the encouragement of use-right contracts by local governments, and a compensation scheme for “beneficial expenses” in order to provide farmers with incentives for land improvement.
Observation of coherent transients in ultrashort chirped excitation of an undamped two-level system
Creators: name: Zamith, Sebastien
name: Degert, Jerome
name: Stock, Sabine
name: de Beauvoir, Beatrice
name: Blanchet, Valerie
name: Bouchene, M. Aziz
name: Girard, Bertrand
Publisher: name: arXiv
Year: 2001
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The effects of Coherent excitation of a two level system with a linearly chirped pulse are studied theoretically and experimentally (in Rb (5s - 5p)) in the low field regime. The Coherent Transients are measured directly on the excited state population on an ultrashort time scale. A sharp step corresponds to the passage through resonance. It is followed by oscillations resulting from interferences between off-resonant and resonant contributions. We finally show the equivalence between this experiment and Fresnel diffraction by a sharp edge.
description: 4 pages, 4 figures, to appear in PRL
title: The nature of carbonaceous deposits formed upon mordenite from various feeds
Creators: name: Spencer, Nicholas A.
Publisher: name: University of Glasgow
Year: 2016

description: Using a mordenite catalyst, BP Chemicals’ SaaBre process is a route to acetic acid using dimethyl ether and CO. An improvement on the Cativa process, it does not require a methyl halide promoter and therefore a hastelloy reactor. It is also a heterogeneous reaction, removing the costly separation processes used with Cativa. As with the methanol to gasoline process, the carbonaceous deposits play a large part in the chemistry of the system and changes can give large effects on deactivation times and selectivity. This study investigates the carbonaceous deposits found upon mordenite under methanol, dimethyl carbonate and a range of mixed feeds to mimic the effects of products and byproducts in the methanol stream. Studies have shown that the transition temperature between methanol dehydration to DME, and MTG chemistry occurs between 255°C-260°C with a 50 % methanol feed and decreases by around 20°C with a 90 % methanol feed. This is associated with the growth of the hydrocarbon pool, an alkyl aromatic system within the pores of the zeolite which is the active catalyst for the MTG process. Investigation of the formation of these species has used 13C and 17O enriched methanol feeds to allow determination of the species present by MASNMR whilst looking at several variables. Studies of framework nuclei, 27Al and 29Si, have also been performed to give greater insight into how the chemical environment of the zeolite changes as the coke is deposited in the zeolite. Time-resolved in situ diffraction studies have probed the reaction of methanol and the effect it has on the unit cell of the framework. These studies have shown an anisotropic expansion of the unit cell associated with the growth of alkyl aromatic compounds, and also an unexplained contraction within the first few minutes of reaction. EPR studies have looked to elucidate the nature of radical species in the coked mordenite samples as a function of time and have produced spectra with sufficient hyperfine coupling to propose tentative identification with the aid of the B3LYP level of DFT simulations. The differences in the nature of coke between H-MOR and H-Ga-MOR were also investigated with the aid of MAS-NMR spectroscopy. Several feeds including dimethyl carbonate, and mixed feeds of methanol and acetone, acetic acid, acetaldehyde and TFA, have been investigated to see how they affect the carbonaceous deposits. Mechanistic routes have also been deduced with the use of complementary 13C enriched feeds.
Investigation of THz absorption spectrum of photonic crystals including MoS2 monolayers
Creators: name: Ensiyeh Mohebbi
name: Asadi, Narges
name: Moradi, Maryam
Publisher: name: figshare
Year: 2019
Subjects: subject: 20404 Electronic and Magnetic Properties of Condensed Matter; Superconductivity
subject: FOS: Physical sciences

description: The two dimensional Molybdenum disulfide, MoS2, has attracted intense attention for its application in the THz optoelectronics and thus can be used in photonics devices. In this paper, to simultaneous application of photonics crystals and MoS2, periodic photonic crystal structures including Si, SiO2 and MoS2 are demonstrated. The THz refractive index of MoS2 is taken from Drude model. Transmission and absorption spectra in the THz range for either of TE and TM modes are calculated by transfer matrix method (TMM). It is found that the absorption spectrum is dependent upon MoS2 thickness and weakly depends upon the MoS2 position in the structure.
Forcing operators on star graphs applied for the cubic fourth order Schrödinger equation
Creators: name: Filho, Roberto de A. Capistrano
name: Cavalcante, Márcio
name: Gallego, Fernando A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35R02, 35Q55, 35C15, 81Q35, 35G30

description: In a recent article \textit{"Lower regularity solutions of the biharmonic Schrödinger equation in a quarter plane", to appear on Pacific Journal of Mathematics [15]}, the authors gave a starting point of the study on a series of problems concerning the initial boundary value problem and control theory of Biharmonic NLS in some non-standard domains. In this direction, this article deals to present answers for some questions left in [15] concerning the study of the cubic fourth order Schrödinger equation in a star graph structure $\mathcal{G}$. Precisely, consider $\mathcal{G}$ composed by $N$ edges parameterized by half-lines $(0,+\infty)$ attached with a common vertex $ν$. With this structure the manuscript proposes to study the well-posedness of a dispersive model on star graphs with three appropriated vertex conditions by using the \textit{boundary forcing operator approach}. More precisely, we give positive answer for the Cauchy problem in low regularity Sobolev spaces. We have noted that this approach seems very efficient, since this allows to use the tools of Harmonic Analysis, for instance, the Fourier restriction method, introduced by Bourgain, while for the other known standard methods to solve partial differential partial equations on star graphs are more complicated to capture the dispersive smoothing effect in low regularity. The arguments presented in this work have prospects to be applied for other nonlinear dispersive equations in the context of star graphs with unbounded edges.
description: 28 pages, 1 figure
Risks and Competitiveness in Agriculture with Emphasis on Wine Sector in Croatia
Creators: name: Bedek, Željka
name: Njavro, Mario
name: Bedek, Željka
name: Njavro, Mario
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agriculture
subject: Wine
subject: Competitiveness
subject: Risks
subject: Croatia

description: International competitiveness, being a key objective of each economic entity, is at the same time significantly determined by the level of risk the entity is coping. Based on the assumption that risk management is directly linked to competitiveness in agribusiness, the scope of this paper is predominantly focused on the wine agribusiness in Croatia. The aim of this paper is to encompass available literature and transfer findings to interested parties, about risks and competitiveness in agriculture, with particular reference to the wine sector. Qualitative analysis of secondary data, descriptive i.e. monographic method, deductive method and comparison of available papers from the world and Croatia were applied in the paper. There are very few companies in general, however, that tend to use their abilities to manage risks as a source of competitive advantage. These companies go beyond compliance or cost-controlling defensive approaches and take a more aggressive stance toward risk. They have realized that their risk management capabilities can be leveraged as a source of competitive advantage (Elahi, 2013). Current literature showed that such companies indirectly exist within global agribusiness. Examples of such companies in the wine sector could be found in Old World and New World wine countries. In regards with the mentioned, further research in the wine sector that would more directly link competitiveness and risk management and benefits that could be drawn from such “linkage” is needed.
Necessary conditions for the efficient simulation of Hamiltonians using local unitary operations
Creators: name: Chen, Hao
Publisher: name: arXiv
Year: 2001
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study necessary conditions for the efficient simulation of both bipartite and multipartite Hamiltonians, which are independent of the eigenvalues and based on the algebraic-geometric invariants introduced in [1-2]. Our results indicate that the problem of efficient simulation of Hamiltonians for arbitrary and multipartite quantum systems cannot be described by using only eigenvalues, unlike that in the two-qubit case.
description: published version
Control of Nonlinear Optical Absorption in One-Dimensional Photonic Crystal with Graphene Defect
Creators: name: Ensiyeh Mohebbi
name: Ansari, Narges
name: Shahshahani, Fatemeh
Publisher: name: figshare
Year: 2019
Subjects: subject: 20404 Electronic and Magnetic Properties of Condensed Matter; Superconductivity
subject: FOS: Physical sciences

description: : Today, graphene nanostructures have made potential application in nonlinear optoelectronic devices, e.g. in narrowband filters. In this paper, the nonlinearabsorption of one-dimensional defective photonic crystal made of Ta2O5 and SiO2 periodic layers and graphene layer as a structural defect showing nonlinear optical properties are investigated in the visible wavelength region using the transfer matrix method (TMM). Due to the high third-order nonlinear susceptibility of the graphene layer, the optical Kerr effect is found to be a dominant effect in the studied structure. Results indicate that the absorption response of the structure is tuneable through the changes in periodicity, polarization and angle and amplitude of incident. Calculation results show that it is possible to achieve two absorption values of 0.99 with an incident amplitude of less than 102 MW cm2 and zero with incident amplitude higher than104 MW cm2 , an incident wavelength of 818 nm
The microRNA-127-3p directly targeting Vamp2 in C2C12 myoblasts
Creators: name: Li, Jie
name: Wang, Gaofu
name: Jiang, Jing
name: Fu, Lin
name: Zhou, Peng
name: Ren, Hangxing
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Computational Biology

description: MicroRNAs (miRNAs) have been reported that can regulate skeletal muscle growth and development. Previously, we demonstrated that miR-127-3p were differently expressed in skeletal muscle and muscle cells. However, the molecular mechanism of miR-127-3p regulation of skeletal myogenesis are not well elucidated. In this study, we transfected miR-127-3p into C2C12 cells, and found miR-127-3p induces myogenesis by targeting Vamp2. Moreover, the regulatory mechanism of Vamp2 in myoblasts proliferation and differentiation was further confirmed. In conclusion, our data providedevidences that miR-127-3p reciprocally regulated myoblasts proliferation and differentiation through directly targeting Vamp2.
The K20 survey. II. The Different Spatial Clustering of z~1 Old and Dusty Star-Forming EROs
Creators: name: Daddi, E.
name: Cimatti, A.
name: Broadhurst, T.
name: Renzini, A.
name: Zamorani, G.
name: Mignoli, M.
name: Saracco, P.
name: Fontana, A.
name: Pozzetti, L.
name: Poli, F.
name: Cristiani, S.
name: D'Odorico, S.
name: Giallongo, E.
name: Gilmozzi, R.
name: Menci, N.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We compare the 3D clustering of old passively-evolving and dusty star-forming z~1 EROs from the K20 survey. With detailed simulations of clustering, the comoving correlation length of dusty star-forming EROs is constrained to be less than r_0~2.5 Mpc/h. In contrast, the old EROs are much more positively correlated, with 5.5
description: 5 pages, 2 figures. A&A Letters, in press
Untitled Item
Creators: name: Ensiyeh Mohebbi
name: Ansari, Narges
Publisher: name: figshare
Year: 2019
Subjects: subject: 20404 Electronic and Magnetic Properties of Condensed Matter; Superconductivity
subject: FOS: Physical sciences

description: Two-dimensional Molybdenum disulfide, MoS2, crystal has attracted intense attention for its application in the THz optoelectronics and can be used for transparent electrode in the nanoscale research area. In this paper, we design structures including MoS2 monolayer on different substrates and different layer positions in one-dimensional photonic crystals (1DPCs) toward decreasing the optical absorption. The THz refractive index of MoS2 taken from Drude model is calculated. Transmission and absorption spectra in the THz range for either of TE or TM modes is calculated based on the transfer matrix method (TMM). In continue we show that the absorption spectrum can be tuned by changing different materials and incident angles for either of TE or TM modes. We finally in our best design achieved absorption smaller than MoS2 monolayer and nearly 100% transmission. Such results are useful for application in nano-bulding blocks including transparent electrode in future photonics and electronics devices.
Spectral & Photometric Evolution of Simple Stellar Populations at Various Metallicities
Creators: name: Schulz, J.
name: Alvensleben, U. Fritze - v.
name: Moeller, C. S.
name: Fricke, K. J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A new set of evolutionary synthesis spectra are presented for {\bf S}imple {\bf S}tellar {\bf P}opulations ({\bf SSP}s) covering ranges in metallicity from $ 0.02 \leq Z/Z_{\odot} \leq 2.5$ and ages from $4\cdot 10^6$ yr $\leq t \leq 16$ Gyr. They are based on the most recent isochrones from the Padova group that extend earlier models by the inclusion of the thermal pulsing AGB phase for stars in the mass range $2 M_{\odot} \leq m \leq 7 M_{\odot}$ in accordance with the fuel consumption theorem. We show that with respect to earlier models, inclusion of the TP-AGB phase leads to significant changes in the $(V-I)$ and $(V-K)$ colors of SSPs. Using model atmosphere spectra from Lejeune et al, we calculate the spectral evolution of single burst populations of various metallicities. Isochrone spectra are convolved with filter response functions to describe the time evolution of luminosities and colors in various filter systems. The models and their results are not only intended for use in the interpretation of star clusters but also for combination with any kind of dynamical galaxy formation and/or evolution model that contains a star formation criterion. We also present the time evolution of ejection rates for gas and metals for two different {\bf I}nitial {\bf M}ass {\bf F}unctions ({\bf IMF}s) as well as cosmological and evolutionary corrections for all the filters as a function of redshift and two different cosmologies. Extensive data files are provided in the electronic version, at CDS, and at our above www-address.
description: 12 pages, using AA LaTeX vers. 4.01, accepted for A&A
Anticipating the Future: Scenarios for Resilient Institutions in Agricultural Research and Innovation
Creators: name: Poppe, Krijn
name: Floor, Geerling‐Eiff
name: Trond, Selnes
name: Poppe, Krijn
name: Floor, Geerling‐Eiff
name: Trond, Selnes
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Scenarios
subject: Resilient Institutions
subject: Agricultural Research and Innovation

description: Over the last 20 years several countries have made changes in their Agricultural Knowledge and Innovation Systems (AKIS): institutes for applied research have been put on output‐finance with reduced budgets or have been merged into larger structures (Finland, Italy), sometimes into universities (NL, Dk). Incentives to publish have been strengthened in universities. Private advise is now available all over Europe and competes with public extension. How will or should this develop in the future? The SCAR strategic working group AKIS did a foresight study and identified three scenario’s for AKIS: High Tech, Self‐ Organisation and Collapse. Recommendations are made to make AKIS more robust.
Gravitational Collapse in Higher Dimension
Creators: 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 appearance of naked singularity has been analyzed both for non-marginal and marginally bound cases. It has been shown that naked singularity is possible for any arbitrary dimension in non-marginally bound case. For marginally bound case we have examined the radial null geodesics from the singularity and found that naked singularity is possible upto five dimension.
description: 8 Latex pages, No figure, Revtex style
Commodity Market Dynamics and Price Volatility: Insights from Dynamic Storage Models
Creators: name: Berg, Ernst
name: Berg, Ernst
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Demand and Price Analysis
subject: commodity cycles
subject: nonlinear dynamics
subject: price volatility
subject: system dynamics

description: The recent fluctuations of agricultural commodity prices have stimulated the debate on the potential causes of price volatility. The most common explanation is that weather shocks or other external factors perturb supply, thus leading to substantial price fluctuations. In view of the development of global markets, which tend to average out supply disturbances, one would expect price volatility to decrease if primarily caused by external shocks. This however is contradicted by the experience of the recent past. An alternative explanation proposes that the persistent fluctuations are the result of nonlinear dynamics and would even occur in the absence of external shocks. The focus of this paper is on the latter type of explanation. It is investigated under which conditions price volatility is primarily caused by nonlinear dynamics. A system dynamics modelling approach is used for the analysis. The model results show that plausible behaviour of actors can lead to persistent price fluctuations, even in the absence of external shocks.
Instruments for optimizing patient care in the outpatient emergency unit, with a focus on perception of care
Creators: name: Spechbach, Hervé
Publisher: name: Université de Genève
Year: 2025
Subjects: info:eu-repo/classification/ddc/613
Perception of care
Informatic tools
Emergency care

description:
Overcrowding in emergency departments (EDs) is a common problem worldwide, often resulting in long wait times, decreased quality of care, patient dissatisfaction with the service, and increased costs. The impact on caregivers is also significant, with an increased risk of burn-out, absenteeism, and high staff turnover. The two leading contributors of overcrowding at our ED are the input (volume of patients arriving) and throughput (time to process and/or treat patients). The main causes of input overcrowding are non-urgent cases, frequent users, and the poor and uninsured who lack primary care, mainly migrants.

We first identified the time spent waiting to see a doctor as one of the most important variables associated with patient satisfaction in the ED. Thus, we investigated patients’ perception of wait time and developed a novel tool permitting to change the perception of wait time, with the hypothesis that it would impact on satisfaction.

As communication is a key factor for patient satisfaction and better adherence to treatment, we then took into account the fact that 10% of our patients do not share a common language with caregivers in the outpatient emergency patient of Geneva University Hospitals (HUG), as well as those with intellectual deficiencies and deaf persons. This led to the development of novel communication methods, such as BabelDr, a speech-enabled fixed-phrase translator for emergency settings, and its extension, PictoDr, which allows communication exclusively through pictographs. Several other innovative tools are currently under development, such as the use of avatars for the deaf.

This privat docent thesis represents the results of the author’s research, which focuses on instruments to optimize patient care and enhance patient and caregiver satisfaction in the outpatient emergency unit.
Croatian Wine Market, Support Policy and Specific Obstacles to Wine Exports
Creators: name: Lucijano, Jakšić
name: Mario, Njavro
name: Hrvoje, August
name: Lucijano, Jakšić
name: Mario, Njavro
name: Hrvoje, August
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agribusiness
subject: International Relations/Trade
subject: Croatian wine market
subject: Government support
subject: export wine markets.

description: In this paper, analysis of Croatian wine sector in period 2006-2013 is conducted through the record of wine production, exports and imports together with Government support measures. In the light of Croatian EU membership together with opening of EU wine market and global wine market, recommendations for further discussion of support measures for small and medium winemakers are given.
The prospects of a quantitative measurement of agility: A validation study on an agile maturity model
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: Agile development has now become a well-known approach to collaboration in professional work life. Both researchers and practitioners want validated tools to measure agility. This study sets out to validate an agile maturity measurement model with statistical tests and empirical data. First, a pretest was conducted as a case study including a survey and focus group. Second, the main study was conducted with 45 employees from two SAP customers in the US. We used internal consistency (by a Cronbach's alpha) as the main measure for reliability and analyzed construct validity by exploratory principal factor analysis (PFA). The results suggest a new categorization of a subset of items existing in the tool and provides empirical support for these new groups of factors. However, we argue that more work is needed to reach the point where a maturity models with quantitative data can be said to validly measure agility, and even then, such a measurement still needs to include some deeper analysis with cultural and contextual items.
Developing a quality improvement plan to reduce maternal death among women attending a public hospital, in Sudan
Creators: name: Makki Elnour, Yousif R
Publisher: name: Royal College of Surgeons in Ireland
Year: 2025
Subjects: classificationCode: 420317
subject: Patient safety
classificationCode: 350715
subject: Quality management
classificationCode: 350505
subject: Occupational and workplace health and safety

description: A paper presented at the Quality Improvement and Patient Safety Research Symposium, RCSI University of Medicine and Health Sciences, 3 March 2025
Improving water productivity in agriculture in developing economies: in search of new avenues
Creators: name: Kumar, M. Dinesh
name: Van Dam, J. C.
name: Kumar, M. Dinesh
name: Van Dam, J. C.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: Water Productivity
subject: Crop production
subject: Wheat
subject: Cotton
subject: Evapotranspiration
subject: Economic aspects
subject: India

description: This article shows how the various considerations for analyzing water productivity (WP) differ due to the differences in stakeholder interests, and objectives and units of analysis. Also it identifies some major gaps in WP research and the key drivers of change in WP. The main arguments are: 1] in developing economies like India the objective of WP research should also be to maximize net return per unit of water and aggregate returns for the farmer, rather than merely enhancing “crop per drop”; 2] the determinant for analyzing the impact of efficient irrigation technologies on basin level WP and water saving should be consumed fraction (CF) rather than evapotranspiration; 3] in closed basins, determinants for analyzing basin level WP improvement through water harvesting and conservation should be incremental economic returns & opportunity costs; 4] at the field level, the reliability of irrigation water and changing water allocation could be the key drivers of change in WP that need to be analyzed, whereas at the farm level, changes in the crop mix and farming system could be key drivers of change. In composite farming systems, measures to enhance WP should be based on farm-level analysis involving considerations such as risk taking ability and investment capabilities of the farmer. Finally, the options to enhance WP in agriculture seem to be quite limited, given the larger objective of addressing food security, poverty alleviation, and employment generation concerns in rural areas.
description: In Kumar, M. Dinesh (Ed.). Managing water in the face of growing scarcity, inequity and declining returns: exploring fresh approaches. Proceedings of the 7th Annual Partners Meet, IWMI TATA Water Policy Research Program, ICRISAT, Patancheru, Hyderabad, India, 2-4 April 2008. Vol.1. Hyderabad, India: International Water Management Institute (IWMI), South Asia Sub Regional Office