cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Influence of cyclic torsional loading on the fatigue resistance of K3XF instruments.
Creators: name: Alfadley, Abdulmohsen
Publisher: name: University of British Columbia
Year: 2015

description: Objective: To evaluate the torsional and cyclic fatigue behavior of post-machining heat-treated K3XF and conventional K3 nickel titanium (NiTi) instruments. Methodology: New K3XF and K3 files size 25/0.04 (n = 15) were tested in torsion and fatigue tests until fracture to determine the mean number of cycles to failure (NCF) and torque to failure. The cyclic torsional loading experiment was conducted; K3XF and K3 files (n = 30 in each group) were programmed to repeatedly rotate from zero angular deflection to 180° and then return to zero torque. Each rotation was defined as one cycle. Each file was subjected to 10 cycles of torsional loading. Fifteen files from each group were subsequently tested in torsion until fracture. Also, fifteen files subjected to cyclic torsional loading were examined using a three-point bending apparatus to obtain the mean number of cycles to failure. The fracture surface was examined with a scanning electron microscope. The crack-initiation sites and the percentage of dimple area of the whole fracture cross-sectional area were recorded. Results: There was no statistically significant difference between the new K3 and K3XF instruments in the maximum torque or maximum angular deflection. For the previously cycled files, K3XF demonstrated higher torque at fracture values than K3 Instruments (P < .05). The fatigue resistance of K3XF was significantly higher than K3 in both the new and previously cycled groups (P < .05). The NCF value of K3XF with torsional loading was even higher than that of K3 files without torsional loading, although there was no significant difference. New K3XF files demonstrated a significantly higher NCF than previously cycled files (P < .05). Conclusions: Cyclic torsional loading decreased the cyclic fatigue resistance of K3XF and K3 instruments although it did not affect their torsional properties. K3XF demonstrated better cyclic fatigue resistance than K3 for both new and previously torqued files.
Submillimeter absorption from SH+, a new widespread interstellar radical, 13CH+ and HCl
Creators: name: Menten, K. M.
name: Wyrowski, F.
name: Belloche, A.
name: Guesten, R.
name: Dedes, L.
name: Mueller, H. S. P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have used the Atacama Pathfinder Experiment 12 m telescope (APEX) to carry out an absorption study of submillimeter wavelength rotational ground-state lines of H35Cl, H37Cl, 13CH+, and, for the first time, of the SH+ radical (sulfoniumylidene or sulfanylium). We detected the quartet of ground-state hyperfine structure lines of SH+ near 683 GHz with the CHAMP+ array receiver against the strong continuum source Sagittarius B2, which is located close to the center of our Galaxy. In addition to absorption from various kinematic components of Galactic center gas, we also see absorption at the radial velocities belonging to intervening spiral arms. This demonstrates that SH+ is a ubiquitous component of the diffuse interstellar medium. We do not find clear evidence for other SH+ lines we searched for, which is partially due to blending with lines from other molecules. In addition to SH+, we observed absorption from H35Cl, H37Cl, and 13CH+. The observed submillimeter absorption is compared in detail with absorption in 3 mm transitions of H13CO+ and c-C3H2 and the CO J = 1-0 and 3-2 transitions.
description: 17 pages, 9 figures
Establishing the biological role of MPK20 in primary cell wall formation in Arabidopsis
Creators: name: Cheng, Siyu
Publisher: name: University of British Columbia
Year: 2015

description: Plants, as sessile organisms, need to grow while withstanding many environmental challenges. To give this capability, various cellular signal transduction systems are necessary for sensing changes in the environment and transmitting these signals to other components of the cell. One of the major mechanisms used for such signal transmission consists of mitogen-activated protein kinase (MAPK) cascades. MAPK cascades form an important signal transduction system in all eukaryotic organisms. In Arabidopsis thaliana, 20 MAPKs (MPKs) have been found, which belong to two sub-types: the TEY sub-type (MPK Groups A, B, and C) and the TDY sub-type (MPK Group D). Very little is known about the biological roles of Group D MPKs, but the expression of one group D MPK, MPK20, is correlated across many microarray experiments with expression of primary cell wall cellulose synthase (CesA) genes – CesA1, 3, and 6 [1]. This suggests that MPK20 may be involved in primary cell wall synthesis or associated biochemical processes. According to data in the MIND 0.5 database (Membrane-protein Interaction Network Database 0.5), MPK20 interacts with AtPIN1. As auxin is important for cell wall loosening and cell expansion, such an association with an auxin transporter could indicate that MPK20 plays a role in auxin signaling pathways, especially those that affect cell walls. In this study, the biological function of MPK20 has been explored by reverse genetics and phenotype assays. The mpk20 knock out (KO) lines display shorter hypocotyls and shorter primary roots compared with wild type (WT). However, these growth differences are small, although statistically significant. As MPK18, MPK19 and MPK20 are close homologues, double and triple KO mutants were built and analyzed. The loss-of-function mutants do not display any detectable auxin-related phenotype, nor do they differ from WT plants with respect to responses to other plant hormones tested except in their response to exogenous GA application. Attempts were made to purify a recombinant protein of MPK20 but these were unsuccessful. To explain the results of these experiments, models of MPK20 biological function, and of its interactions with the MPK20 paralogues, MPK18 and MPK19, have been proposed.
Limit Sets for Natural Extensions of Schelling's Segregation Model
Creators: name: Singh, Abhinav
name: Vainchtein, Dmitri
name: Weiss, Howard
Publisher: name: arXiv
Year: 2010
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: Thomas Schelling developed an influential demographic model that illustrated how, even with relatively mild assumptions on each individual's nearest neighbor preferences, an integrated city would likely unravel to a segregated city, even if all individuals prefer integration. Individuals in Schelling's model cities are divided into two groups of equal number and each individual is 'happy' or 'unhappy' when the number of similar neighbors cross a simple threshold. In this manuscript we consider natural extensions of Schelling's original model to allow the two groups have different sizes and to allow different notions of happiness of an individual. We observe that differences in aggregation patterns of majority and minority groups are highly sensitive to the happiness threshold; for low threshold, the differences are small, and when the threshold is raised, striking new patterns emerge. We also observe that when individuals strongly prefer to live integrated neighborhoods, the final states exhibit a new tessellated-like structure.
description: 19 pages, 10 figures
Probing general relativistic spin-orbit coupling with gravitational waves from hierarchical triple systems
Creators: name: Oancea, Marius A.
name: Stiskalek, Richard
name: Zumalacárregui, Miguel
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Wave packets propagating in inhomogeneous media experience a coupling between internal and external degrees of freedom and, as a consequence, follow spin-dependent trajectories. These phenomena, well known in optics and condensed matter physics, are referred to as spin Hall effects. Similarly, the gravitational spin Hall effect is expected to affect the propagation of gravitational waves on curved spacetimes. In this general-relativistic setup, the curvature of spacetime acts as impurities in a semiconductor or inhomogeneities in an optical medium, leading to a frequency- and polarization-dependent propagation of wave packets. In this letter, we study this effect for strong-field lensed gravitational waves generated in hierarchical triple black hole systems in which a stellar-mass binary merges near a more massive black hole. We calculate how the gravitational spin Hall effect modifies the gravitational waveforms and show its potential for experimental observation. If detected, these effects will have profound implications for astrophysics and tests of general relativity.
LOAD-SETTLEMENT BEHAVIOUR OF  GEOGRID-REINFORCED  SAND CUSHION
Creators: name: Singh, Abhishek
Publisher: name: Zenodo
Year: 2019
Subjects: soft clays, sand cushion, geogrid reinforcement, plate load tests, load settlement behaviour.

description: Soft clays are those which have their natural water content close to their liquid limit. As a result, they have a low bearing capacity and undergo large settlements even at low values of imposed stress. Hence, structures formed in this soil are subjected to distress and instability. Various ground improvement techniques have been devised for improving the bearing capacity and reducing settlements of these soils. Chemical stabilization, lime-soil columns, grouting, vibro-compaction, stone columns, preloading with sand drains, heavy tamping, and electro-osmosis have been some of the successful ground improvement techniques used widely all over the world. Reinforcing earth is also an effective technique to improve the bearing capacity. Geo-synthetic reinforcement of ground has been a recent development in reinforced earth. Geo-textiles, geo-membranes, geo-fabrics and geogrids have been the reinforcement component used for improving bearing capacity of weak soils.

In this thesis, the efficacy of geogrid-reinforced sand cushion in improving the load-settlement behaviour of a soft clay bed was explored. A high density polyethylene (HDPE) geogrid was used as horizontal reinforcement in the sand cushion overlying a soft clay bed. A series of laboratory model plate load tests was conducted  to study the load-settlement behaviour of a soft clay bed underlying sand cushion prepared with fine sand, medium sand and coarse sand.

The soft clay bed was prepared at a consistency index (CI) of 50%. All the sand cushions were compacted to a constant relative density of 60%. Circular geogrids of diameter 120 mm were used as reinforcement layers in the sand cushion. The number of geogrids and the spacing between them were varied. It was found that sand cushion layers improved the load-settlement behaviour of the clay bed even in the un-reinforced condition. When geogrid reinforcement was provided in the sand cushion the behaviour further improved with increasing number of geogrid layers and with decreasing spacing between them. Different types of sand cushion were provided to study the influence of particle size on the settlement response of geogrid reinforced sand.
Towards the experimental clarification of quarkonium polarization
Creators: name: Faccioli, Pietro
name: Lourenco, Carlos
name: Seixas, Joao
name: Woehri, Hermine K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We highlight issues which are often underestimated in the experimental analyses on quarkonium polarization: the relation between the parameters of the angular distributions and the angular momentum composition of the quarkonium, the importance of the choice of the reference frame, the interplay between observed decay and production kinematics, and the consequent influence of the experimental acceptance on the comparison between experimental measurements and theoretical calculations. Given the puzzles raised by the available experimental results, new measurements must provide more detailed information, such that physical conclusions can be derived without relying on model-dependent assumptions. We describe a frame-invariant formalism which minimizes the dependence of the measurements on the experimental acceptance, facilitates the comparison with theoretical calculations, and probes systematic effects due to experimental biases. This formalism is a direct and generic consequence of the rotational invariance of the dilepton decay distribution and is independent of any assumptions specific to particular models of quarkonium production. The use of this improved approach, which exploits the intrinsic multidimensionality of the problem, will significantly contribute to a faster progress in our understanding of quarkonium production, especially if adopted as a common analysis framework by the LHC experiments, which will soon perform analyses of quarkonium polarization in proton-proton collisions.
description: Submitted to EPJC
Fading of the X-ray flux from the black hole in the NGC 4472 globular cluster RZ 2109
Creators: name: Maccarone, Thomas J.
name: Kundu, Arunav
name: Zepf, Stephen E.
name: Rhode, Katherine L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the results of new X-ray observations of XMMU 122939.7+075333, the black hole (BH) in the globular cluster RZ 2109 in the Virgo Cluster galaxy NGC 4472. A combination of non-detections and marginal detections in several recent Swift and Chandra observations show that the source has varied by at least a factor of 20 in the past 6 years, and that the variations seem not just to be "flickering." This variation could be explained with changes in the absorption column intrinsic to the source no larger than those which were previously seen near the peak of the 1989 outburst of the Galactic BH X-ray binary V404 Cyg. The large amplitude variations are also a natural expectation from a hierarchical triple system with Kozai cycles -- the mechanism recently proposed to produce BH-white dwarf (WD) binaries in globular clusters. On the other hand, variation by such a large factor on timescales of years, rather than centuries, is very difficult to reconcile with the scenario in which the X-ray emission from XMMU 122939.7+075333 is due to fallback of material from a tidally destroyed or detonated WD.
description: 5 pages, no figures, accepted to MNRAS Letters
COLA III. Radio Detection of AGN in Compact Moderate Luminosity Infra-Red Galaxies
Creators: name: Parra, R.
name: Conway, J. E.
name: Aalto, S.
name: Appleton, P. N.
name: Norris, R. P.
name: Pihlstroem, Y. M.
name: Kewley, L. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present results from 4.8 GHz VLA and Global-VLBI observations of the northern half of the moderate FIR luminosity (median L_IR = 10^11.01 L_Sol) COLA sample of star-forming galaxies. VLBI sources are detected in a high fraction (20/90) of the galaxies observed. The radio luminosities of these cores (~10^21 W/Hz) are too large to be explained by radio supernovae or supernova remnants and we argue that they are instead powered by AGN. These sub-parsec scale radio cores are preferentially detected toward galaxies whose VLA maps show bright 100-500 parsec scale nuclear radio components. Since these latter structures tightly follow the FIR to radio-continuum correlation for star-formation we conclude that the AGN powered VLBI sources are associated with compact nuclear starburst environments. The implications for possible starburst-AGN connections are discussed. The detected VLBI sources have a relatively narrow range of radio luminosity consistent with models in which intense compact Eddington-limited starbursts regulate the gas supply onto a central super-massive black hole. The high incidence of AGN radio cores in compact starbursts suggests little or no delay between the starburst phase and the onset of AGN activity.
description: 33 Pages, 14 Figures. Accepted for publication in ApJ
The bi-stability jump as the origin for multiple P-Cygni absorption components in Luminous Blue Variables
Creators: name: Groh, Jose H.
name: Vink, Jorick S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Luminous Blue Variables (LBVs) oftentimes show double-troughed absorption in their strong Halpha lines, which are as yet not understood. Intriguingly, the feature has also been seen in the interacting supernova SN 2005gj, which was for this reason suggested to have an LBV progenitor. Our aims are to understand the double-troughed absorption feature in LBVs and investigate whether this phenomenon is related to wind variability. To this purpose, we perform time-dependent radiative transfer modeling using CMFGEN. We find that abrupt changes in the wind-terminal velocity - as expected from the bi-stability jump - are required to explain the double-troughed absorption profiles in LBVs. This strengthens scenarios that discuss the link between LBVs and SNe utilizing the progenitor's wind variability resulting from the bi-stability jump. We also discuss why the presence of double-troughed P-Cygni components may become an efficient tool to detect extra-galactic LBVs and how to analyze their mass-loss history on the basis of just one single epoch of spectral observations.
description: 5 pages, 5 figures, accepted by A&A Letters
Two-Photon Transport in a Waveguide Coupled to a Cavity with a Two-level System
Creators: name: Shi, T.
name: Fan, Shanhui
name: Sun, C. P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider a system where a waveguide is coupled to a cavity embedded with a two-level system (TLS), and study the effects when a two-photon quantum state is injected into the waveguide. The wave function of two outgoing photons is exactly solved using the Lehmann-Symanzik-Zimmermann (LSZ) reduction formalism. Our results explicitly exhibit the photon blockade effects in the strong atom-cavity coupling regime. The quantum statistical characters of the outgoing photons, including the photon bunching and anti-bunching behaviors, are also investigated in both the strong and weak coupling regimes. These results agree with the observations of recent experiments.
description: 4 pages, 3 figures
Additional file 1 of HBeAg mediates inflammatory functions of macrophages by TLR2 contributing to hepatic fibrosis
Creators: name: Xie, Xiaoyu
name: Lv, Huanran
name: Liu, Chenxi
name: Su, Xiaonan
name: Yu, Zhen
name: Song, Shouyang
name: Bian, Hongjun
name: Tian, Miaomiao
name: Qin, Chengyong
name: Qi, Jianni
name: Zhu, Qiang
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. The expression of TLR-2 in LX-2 cells.
COMMUNICATION SKILLS IN PRE-GRADUATE AND POST-GRADUATE EDUCATION OF PHARMACISTS IN UKRAINE
Creators: name: Vlasenko, I.
name: Davtian, L.
Publisher: name: Norwegian Journal of Development of the International Science
Year: 2021
Subjects: pharmacist
communication skills
education

description: The aim of this article is to analyze the state of the problem of getting communicative competencies by phar-macists in Ukraine and abroad. It was found that the ability to acquire communication skills for use in professional teaching needs to improve both in scope and teaching methods at the Universities in Ukraine. It is necessary to ensure the development of communication skills throughout the professional life of pharmacists in the curricula of postgraduate education.
Confirmation of the magnetic oblique rotator model for the Of?p star HD 191612
Creators: name: Wade, G. A.
name: Howarth, I. D.
name: Townsend, R. H. D.
name: Grunhut, J. H.
name: Shultz, M.
name: Bouret, J. -C.
name: Fullerton, A.
name: Marcolino, W.
name: Martins, F.
name: Nazé, Y.
name: Doula, A. ud
name: Walborn, N. R.
name: Donati, J. -F.
name: Collaboration, the MiMeS
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This paper reports high-precision Stokes V spectra of HD 191612 acquired using the ESPaDOnS spectropolarimeter at the Canada-France-Hawaii Telescope, in the context of the Magnetism in Massive stars (MiMeS) Project. Using measurements of the equivalent width of the Halpha line and radial velocities of various metallic lines, we have updated both the spectroscopic and orbital ephemerides of this star. We confirm the presence of a strong magnetic field in the photosphere of HD 191612, and detect its variability. We establish that the longitudinal field varies in a manner consistent with the spectroscopic period of 537.6 d, in an approximately sinusoidal fashion. This demonstrates a firm connection between the magnetic field and the processes responsible for the line and continuum variability. Interpreting the variation of the longitudinal magnetic field within the context of the dipole oblique rotator model we obtain a best-fit surface magnetic field model with obliquity beta=67\pm 5 deg and polar strength Bd=2450\pm 400 G . The inferred magnetic field strength implies an equatorial wind magnetic confinement parameter eta*~50, supporting a picture in which the Halpha emission and photometric variability have their origin in an oblique, rigidly rotating magnetospheric structure resulting from a magnetically channeled wind. This interpretation is supported by our successful Monte Carlo radiative transfer modeling of the photometric variation, which assumes the enhanced plasma densities in the magnetic equatorial plane above the star implied by such a picture. Predictions of the continuum linear polarisation resulting from Thompson scattering from the magnetospheric material indicate that the Stokes Q and U variations are highly sensitive to the magnetospheric geometry, and that expected amplitudes are in the range of current instrumentation. (abridged)
description: 10 pages, accepted by MNRAS
Matter-antimatter asymmetry and dark matter stability from baryon number conservation
Creators: name: Císcar-Monsalvatje, Mar
name: Ibarra, Alejandro
name: Vandecasteele, Jérôme
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: There is currently no evidence for a baryon asymmetry in our Universe. Instead, cosmological observations have only demonstrated the existence of a quark-antiquark asymmetry, which does not necessarily imply a baryon asymmetric Universe, since the baryon number of the dark sector particles is unknown. In this paper we discuss a framework where the total baryon number of the Universe is equal to zero, and where the observed quark-antiquark asymmetry arises from neutron portal interactions with a dark sector fermion $N$ that carries baryon number. In order to render a baryon symmetric universe throughout the whole cosmological history, we introduce a complex scalar $χ$, with opposite baryon number and with the same initial abundance as $N$. Notably, due to the baryon number conservation, $χ$ is absolutely stable and could have an abundance today equal to the observed dark matter abundance. Therefore, in this simple framework, the existence of a quark-antiquark asymmetry is intimately related to the existence (and the stability) of dark matter.
description: Corrected asymmetry dynamics, conclusion unchanged. 15 pages, 5 figures
Ideology in home economics education : a critical discourse analysis
Creators: name: Johnson, Ayala Monique
Publisher: name: University of British Columbia
Year: 2015

description: Home economics education is facilitated in many nations, including Canada; and governed by the International Federation for Home Economics. The subject derives from a mission-oriented field (Brown & Paolucci, 1979) that seeks to empower families, individuals and the wellness of these units from within the units themselves. In the 1980s, American home economist, Marjorie Brown submitted that the ideological and philosophical intentions of the field were split since their outset (Brown, 1984; Vaines, 1981; 1984); as a result, there were ideological (mis)understandings among home economists that resulted with professional activity differing from subject intention (Brown, 1993). At a similar time in Canada, a home economics scholar at a Canadian university, Eleanore Vaines recommended ecology as a unifying theme for the field in order to reconnect the social justice and libertarian roots of the field, that were recorded in the Proceedings from the Lake Placid Conferences on Home Economics (held annually between 1899 and 1909), to modern reflective and wholistic professional practise. Similar ecological views for home economics were promoted across Canada and internationally (Bubolz & Sontag, 1988; Hook & Paolucci, 1970/1987; Smith, Peterat, & de Zwart, 2004; Vaines, 1994). I applied Critical Discourse Analysis (CDA) to the current (2007) official British Columbian home economics curriculum, to determine if this philosophical underpinning for the field was evident, since such analyses could uncover the ideologies underlying curricular discourse and draw out their local relevance; this would be useful for informing pedagogies and future curricular rewrites. Micro- (text) and macro- (social) analyses revealed that neo-capitalist and neo-liberal ideologies dominated the semiotic structuring of the curriculum document. The presence of these ideologies promoted a social hierarchy in which the interests of current government were foregrounded over passive and subordinate construction of educators and students. Developing home economics curriculum through ecology as a unifying theme was found to be minimally supported and hindered by declarative language and a transmissive style of education that also contradicted possibilities for social justice and libertarianism. The conservative approach prevented transformative potentials among educators and students and reduced the personal obligation of these actors to safeguard wholism, equity and ecological health.
New Hadronic Spectroscopy
Creators: name: Drenska, N.
name: Faccini, R.
name: Piccinini, F.
name: Polosa, A.
name: Renga, F.
name: Sabelli, C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the past few years the field of hadron spectroscopy has seen renewed interest due to the pubblication, initially mostly from B-Factories, of evidences of states that do not match regular spectroscopy, but are rather candidates for bound states with additional quarks or gluons. A huge effort in understanding the nature of this new states and in building a new spectroscopy is ongoing. This report reviews the experimental and theoretical state of the art on heavy quarkonium exotic spectroscopy, with particular attention on the steps towards a global picture.
A Versatile Door Opening System with Mobile Manipulator through Adaptive Position-Force Control and Reinforcement Learning
Creators: name: Kang, Gyuree
name: Seong, Hyunki
name: Lee, Daegyu
name: Shim, D. Hyunchul
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The ability of robots to navigate through doors is crucial for their effective operation in indoor environments. Consequently, extensive research has been conducted to develop robots capable of opening specific doors. However, the diverse combinations of door handles and opening directions necessitate a more versatile door opening system for robots to successfully operate in real-world environments. In this paper, we propose a mobile manipulator system that can autonomously open various doors without prior knowledge. By using convolutional neural networks, point cloud extraction techniques, and external force measurements during exploratory motion, we obtained information regarding handle types, poses, and door characteristics. Through two different approaches, adaptive position-force control and deep reinforcement learning, we successfully opened doors without precise trajectory or excessive external force. The adaptive position-force control method involves moving the end-effector in the direction of the door opening while responding compliantly to external forces, ensuring safety and manipulator workspace. Meanwhile, the deep reinforcement learning policy minimizes applied forces and eliminates unnecessary movements, enabling stable operation across doors with different poses and widths. The RL-based approach outperforms the adaptive position-force control method in terms of compensating for external forces, ensuring smooth motion, and achieving efficient speed. It reduces the maximum force required by 3.27 times and improves motion smoothness by 1.82 times. However, the non-learning-based adaptive position-force control method demonstrates more versatility in opening a wider range of doors, encompassing revolute doors with four distinct opening directions and varying widths.
DETERMINATION OF ACTIVITY OF CATALAZA ENZYME DURING THE GROWTH PERIOD OF GRAIN AND LEGAL PLANTS
Creators: name: Mirhamidova, P.
name: Karimbayeva, M.
name: Toychiyeva, D.
Publisher: name: Norwegian Journal of Development of the International Science
Year: 2021
Subjects: harvested oats
wheat
barley
soybeans
moss
antioxidant enzymes
catalase
enzyme activity
extract

description: As a result of metabolism in a living organism, "products" are formed "free radicals" and peroxide compounds of organic and inorganic substances. It is known that free radicals damage the cell. Enzymes of the body's antiox-idant defense system superoxide dismutase, catalase, glutathione reductase, glutathione peroxidases, toxic prod-ucts of peroxidation of lipids convert free radicals into harmless substances. In this study, the activity of one such enzyme, catalase, was studied. The activity of the enzyme catalase in the germination periods of cereals and legumes varies, the highest activity of the enzyme catalase in the germina-tion period of cereals was found on the 5th day of the germination period: wheat 5.644 mg H2O2 / g, barley 4.08 mg H2O2 / g, oats 5,134 mg H2O2 / g. In legumes, the highest activity was found on the 3rd day of the germination period: in the shade 11.832 mg H2O2 / g, and in the moss 8.126 mg H2O2 / g.
MOISTURE SUPPLY AND WATER CONSUMPTION OF CROPS OF HYBRIDS OF CORN AT VARIOUS WAYS OF WATERING IN THE CONDITIONS OF THE SOUTH OF UKRAINE
Creators: name: Repilevsky, D.
name: Ivaniv, M.
Publisher: name: Norwegian Journal of Development of the International Science
Year: 2021
Subjects: hybrid
maize
FAO group
water consumption
sprinkling
drip irrigation
ground irrigation.

description: Modern methods of irrigation are considered as a key factor in the intensification of technologies for growing grain corn. The productivity of the crop as a result of the optimization of the water regime increases from 100 to 300% in comparison with non-irrigated conditions. The aim of the research was to study the effect of sprinkler irrigation, drip irrigation and subsurface irrigation on the yield of grain corn.
Hysteresis in superconducting short weak links and $μ$-SQUIDs
Creators: name: Hazra, Dibyendu
name: Pascal, Lætitia
name: Courtois, Hervé
name: Gupta, Anjan K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Thermal hysteresis in a micron-size Superconducting Quantum Interference Device ($μ$-SQUID), with weak links as Josephson junctions, is an obstacle for improving its performance for magnetometery. Following the "hot-spot" model of Skocpol et al. [J. Appl. Phys. {\bf 45}, 4054 (1974)] and by incorporating the temperature dependence of thermal conductivity of superconductor using a linear approximation, we find a much better agreement with the observed temperature dependence of the retrapping current in short superconducting Nb-based weak links and $μ$-SQUIDs. In addition, using the temperature dependence of the critical current, we find that above a certain temperature hysteresis disappears. We analyze the current-voltage characteristics and the weak link temperature variation in both the hysteretic and non-hysteretic regimes. We also discuss the effect of the weak link geometry in order to widen the temperature range of hysteresis-free operation.
description: 11 pages, 12 figures
Monte Carlo simulation of magnetic phase transitions in Mn doped ZnO
Creators: name: Drissi, L. B
name: Benyoussef, A.
name: Saidi, E. H
name: Bousmina, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The magnetic properties of Mn-doped ZnO semi-conductor have been investigated using the Monte Carlo method within the Ising model. The temperature dependences of the spontaneous magnetization, specific heat and magnetic susceptibility have been constructed for different concentrations of magnetic dopant Mn and different carrier concentrations. The exact values of Mn concentration and carrier concentration at which high temperature transition occurs are determined. An alternative for the explanation of some controversies concerning the existence and the nature of magnetism in Mn diluted in ZnO systems is given. Other features are also studied.
description: 10 pages, 9 figures, To appear in Journal of Magnetism and Magnetic Materials
On Lossless Approximations, the Fluctuation-Dissipation Theorem, and Limitations of Measurements
Creators: name: Sandberg, Henrik
name: Delvenne, Jean-Charles
name: Doyle, John C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Dynamical Systems (math.DS)
subject: Optimization and Control (math.OC)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In this paper, we take a control-theoretic approach to answering some standard questions in statistical mechanics, and use the results to derive limitations of classical measurements. A central problem is the relation between systems which appear macroscopically dissipative but are microscopically lossless. We show that a linear system is dissipative if, and only if, it can be approximated by a linear lossless system over arbitrarily long time intervals. Hence lossless systems are in this sense dense in dissipative systems. A linear active system can be approximated by a nonlinear lossless system that is charged with initial energy. As a by-product, we obtain mechanisms explaining the Onsager relations from time-reversible lossless approximations, and the fluctuation-dissipation theorem from uncertainty in the initial state of the lossless system. The results are applied to measurement devices and are used to quantify limits on the so-called observer effect, also called back action, which is the impact the measurement device has on the observed system. In particular, it is shown that deterministic back action can be compensated by using active elements, whereas stochastic back action is unavoidable and depends on the temperature of the measurement device.
description: 43 pages; to appear in IEEE TAC
WATER CONSUMPTION OF SOYBEAN VARIETIES WITH DRIP IRRIGATION IN THE ARID STEPPE OF UKRAINE
Creators: name: Ganzha, V.
name: Ivaniv, N.
Publisher: name: Norwegian Journal of Development of the International Science
Year: 2021
Subjects: soybeans
sowing density
drip irrigation
yield
total water consumption

description: The study of the influence of the cenosis density of soybean varieties of different ripeness groups on the indicators of water consumption and grain yield has been carried out. The relationship between the indicators of water consumption and the yield of soybean grain under drip irrigation in the arid steppe of Ukraine has been investigated.
title: Morgenthau, Henry, Sr.
title: Morgenthau, Henry, Sr.
Creators: name: Skinner, Harold Allen
Publisher: name: BSB - Bavarian State Library
Year: 2020
Subjects: subject: Morgenthau, Henry
subject: Morgenthau, Henry, 1856-1946

description: Naturalized American lawyer, real estate investor, and Jewish activist, Henry Morgenthau Senior served as United States Ambassador to the Ottoman Empire from 1913-1916. During 1915-1916 Morgenthau reported extensively on the wholesale ethnic cleansing and genocide of Turkish Armenians and Assyrians.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
Расчет зависимости энергетических параметров асинхронного генератора от скорости ветра
Creators: name: Горюшкин Никита Игоревич
name: Владимировна, Шевченко Валентина
Publisher: name: Zenodo
Year: 2015
Subjects: электрические машины
асинхронные генераторы
энергия ветра
возобновляемые источники энергии

description: На русском: [Горюшкин Н.И., Шевченко В.В. Расчет зависимости энергетических параметров асинхронного генератора от скорости ветра // Материалы IX Международной научно-практической студенческой конференции магистрантов Национального технического университета "Харьковский политехнический университет" (07-09 апреля 2015 года) / оргкомитет: Марченко  А.П. (глава) и др. - В четырех частях, часть 3 (ISBN 978-966-593-724-3). - Украина, Харьков: НТУ "ХПИ", 2015. - С. 82-83. https://doi.org/10.5281/zenodo.2588297]

Ключевые слова: электрические машины, асинхронные генераторы, энергия ветра, возобновляемые источники энергии.

Репозиторий НТУ "ХПИ" - открыть pdf. Архив НТУ "ХПИ" - открыть pdf (https, http).

На CORE - открыть pdf.

Cборник на сайте издательства - скачать pdf.
PHARMACOLOGICAL STRATEGIES FOR CEREBROVASCULAR ACCIDENT MANAGEMENT IN THE INTENSIVE CARE UNIT: INSIGHTS FROM COCODY UNIVERSITY HOSPITAL
Creators: name: Marie-Louise, T. Gboa
name: Jean-Pierre, A. Yao
Publisher: name: AMERICAN SERIAL
Year: 2024
Subjects: Cerebrovascular accident
Stroke
Neurological damage
Medical emergency
Intervention.

description: A cerebrovascular accident (CVA), commonly known as a stroke, presents a critical medical emergency characterized by the sudden disruption of blood flow to the brain, leading to neurological damage. This condition, if not promptly addressed within a narrow therapeutic window of 24 hours, can have grave consequences, ranging from death to irreversible impairment of brain function. Hepburn et al. (2018) highlight the severity of CVAs and underscore the urgent need for timely intervention to mitigate their debilitating effects.

This abstract underscores the urgency and gravity of cerebrovascular accidents, emphasizing the critical importance of swift and effective intervention to prevent adverse outcomes. The 24-hour window following a CVA represents a crucial period during which medical interventions can significantly influence patient prognosis and outcomes. By providing timely and appropriate treatment, healthcare professionals can minimize neurological damage and improve patient survival and quality of life
Supersymmetry and Its Dynamical Breaking
Creators: name: Dine, Michael
name: Mason, John D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This article reviews the subject of supersymmetry and its breaking. The emphasis is on recent developments in metastable, dynamical supersymmetry breaking, which permit the construction of promising models of particle physics.
description: Review article prepared for Reports on Progress in Physics, 53 pages
Расчет зависимости энергетических параметров асинхронного генератора от скорости ветра
Creators: name: Горюшкин Никита Игоревич
name: Владимировна, Шевченко Валентина
Publisher: name: Zenodo
Year: 2015
Subjects: электрические машины
асинхронные генераторы
энергия ветра
возобновляемые источники энергии

description: На русском: [Горюшкин Н.И., Шевченко В.В. Расчет зависимости энергетических параметров асинхронного генератора от скорости ветра // Материалы IX Международной научно-практической студенческой конференции магистрантов Национального технического университета "Харьковский политехнический университет" (07-09 апреля 2015 года). - В четырех частях, часть 3 (ISBN 978-966-593-724-3). - Украина, Харьков: НТУ "ХПИ", 2015. - С. 82-83. https://doi.org/10.5281/zenodo.2588297]

Ключевые слова: электрические машины, асинхронные генераторы, энергия ветра, возобновляемые источники энергии.

Репозиторий НТУ "ХПИ" - открыть pdf. Архив НТУ "ХПИ" - открыть pdf (https, http).

На CORE - открыть pdf

2. Сборник: [Материалы IX Международной научно-практической студенческой конференции магистрантов Национального технического университета "Харьковский политехнический университет" (07-09 апреля 2015 года), ISBN 978-966-593-723-5 / оргкомитет: А.П. Марченко (глава) и др. - В четырех частях, часть 3 (ISBN 978-966-593-724-3). - Украина, Харьков: НТУ "ХПИ", 2015. - 196 с. https://doi.org/10.5281/zenodo.2588298]

Cборник на сайте издательства - скачать pdf.
title: Yudenich, Nikolaĭ Nikolayevich
title: Yudenich, Nikolaĭ Nikolayevich
Creators: name: Martirosyan, Tigran
Publisher: name: BSB - Bavarian State Library
Year: 2020
Subjects: subject: Judenič, Nikolaj N.
subject: Yudenich, Nikolay Nikolayevich, 1862-1933

description: Nikolaĭ Yudenich was one of the most successful Russian commanders in World War One. He demonstrated admirable consistency in achieving victories on the Caucasus Front. During the Russian Civil War, Yudenich became a notable military leader of the White movement.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
The Euler characteristic of a polyhedral product
Creators: name: Davis, Michael W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Geometric Topology (math.GT)
subject: Combinatorics (math.CO)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 57M07, 20F65, 13F55

description: Given a finite simplicial complex L and a collection of pairs of spaces indexed by its vertex set, one can define their polyhedral product. We record a simple formula for its Euler characteristic. In special cases the formula simplifies further to one involving the h-polynomial of L.
description: 5 pages
title: Hervé, Gustave
title: Hervé, Gustave
Creators: name: Marcobelli, Elisa
Publisher: name: BSB - Bavarian State Library
Year: 2020
Subjects: subject: Hervé, Gustave
subject: Hervé, Gustave, 1871-1944

description: Gustave Hervé’s dates of birth and death (1871-1944) correspond broadly to those of the Third Republic (1870-1940). His path is strongly linked to it and his ideas partly reflect its contradictions. Fervently anti-militarist and anti-patriotic before the First World War, he gradually became a convinced nationalist. The Great War, if it cannot be considered the only cause of his drastic change, is certainly a significant factor. Another cause of his many ideological positions at different times is that he was more of a polemist than a politician and loved provocation and expressing his incendiary opinions.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
title: Stockholm Conference
title: Stockholm Conference
Creators: name: Marcobelli, Elisa
Publisher: name: BSB - Bavarian State Library
Year: 2020
Subjects: subject: Conferénce Internationale Socialiste [1917, Stockholm]
subject: International Socialist Congress

description: The Stockholm Conference, or Third Zimmerwald Conference, was held from 5 to 12 September 1917. The subject of the discussions was the way in which a certain part of the socialist movement conceived peace and its approach to fighting war. The genesis of the meeting, however, was complex, intertwined with the events of the Russian Revolution and the differences of opinion within the International Socialist Bureau.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
Ritlecitinib: an investigational drug for the treatment of moderate to severe alopecia areata
Creators: name: Eisman, Samantha
name: Sinclair, Rodney
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer

description: Alopecia areata (AA) is an inflammatory and autoimmune form of hair loss, which can present with one patch of hair loss, but in more extreme cases can lead to total body hair loss. There are limited therapeutic options and no cure, but medication can sometimes induce sustained remission. Disease control cannot be guaranteed; even those who regrow all hair on treatment can experience relapse. There are no FDA approved systemic treatments; therefore, an unmet need for safe, and effective treatments exists. Few treatments have been evaluated by randomized controlled trials. Case reports and series indicate oral Janus Kinase (JAK) inhibitors as a potential therapy. Ritlecitinib is a novel oral JAK3-selective inhibitor being investigated as an AA treatment. This article introduces ritlecitinib as treatment for AA and considers the mechanism of action, pharmacodynamics, pharmacokinetics, clinical efficacy, and safety [reporting data from a 24-week, phase 2a double-blinded placebo-controlled trial of ritlecitinib in patients with AA who have more than 50% scalp hair loss]. Ritlecitinib offers a novel mode of action, rapid onset, and the capacity for a superior safety profile over other JAK inhibitors. If approved, ritlecitinib will be widely prescribed by physicians overseeing the more severe AA patients for the foreseeable future. As JAK inhibitors regulate the hair growth cycle and have anti-inflammatory effects, the implementation of ritlecitinib in hair loss disorders other than AA, may prove beneficial.
Separation of variables for symplectic characters
Creators: name: de Gier, Jan
name: Ponsaing, Anita
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We perform separation of variables for the symplectic Weyl character using Sklyanin's scheme. Viewing the characters as eigenfunctions of a quantum integrable system, we explicitly construct the separating operator using the Q-operator method. We also construct the inverse of the separating operator, as well as the factorised Hamiltonian.
description: 21 pages