cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Roles of the Normal Mechanical Properties of Articular Cartilage in the Contact Mechanics of the Human Knee Joint: a Finite Element Approach
Creators: name: Dabiri, Yaghoub
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Applied Mechanics
subject: Engineering--Biomedical
subject: Engineering--Mechanical
subject: Knee Joint
subject: Cartilage
subject: Finite Element Analysis
subject: Porous Media

description: In spite of numerous research devoted to the study of the mechanical behaviour of cartilage, few of them considered fluid pressure in an anatomically accurate knee joint model. Including the fluid phase as a cartilage constituent, this thesis investigated the mechanics of human knee joint. The main hypothesis of this thesis was that the depth-wise integrity of the structure of cartilage has an important role in its mechanical performance especially its fluid pressurization. The roles of depth-dependent properties, local degenerations and defects on the knee joint mechanics were modeled. Moreover, the effect of individual muscle forces on the knee joint mechanics was investigated. In one of our studies, four models including healthy and degenerated cartilage with local OA progressed from the superficial, to the middle and deep zones were compared. In another study, the effects of depth-wise progression of a local cartilage defect on the knee contact mechanics were investigated. A model with individual muscle forces was compared with a model without muscle forces to examine the effects of muscle forces. The normal cartilage produced higher surface fluid pressure under a given compression. The lack of structural integrity, as happened in local cartilage degeneration, resulted in reduced fluid pressure in the degenerated zone as well as at the cartilage-bone interface. Cartilage defects, on the other hand, had more complex effects on knee joint mechanics. While a local superficial defect reduced pressure in the remaining affected cartilage, a defect advanced to the middle zone increased fluid pressure. Regarding effects of muscle forces, the knee mechanics was noticeably affected when muscles were included. Contact pressure, for instance, was significantly increased in a model with muscle forces compared to a model without muscle forces. The results were in line with previous experimental and computational studies that reported the importance of the structural integrity and depth-dependent properties of cartilage. Integrating fluid pressure, complex three-dimensional geometry, depth-dependent properties, individual muscle forces, and a more realistic treatment of free surface fluid pressure, this project aimed to better understanding of human knee joint mechanics. Results may contribute to better understanding of osteoarthritis as well as the design of artificial cartilage.
Galaxies with Background QSOs, I: A Search for Strong Galactic H-alpha Lines
Creators: name: York, Donald G.
name: Straka, Lorrie A.
name: Bishof, Michael
name: Kuttruff, Seth
name: Bowen, David
name: Kulkarni, Varsha P.
name: Subbarao, Mark
name: Richards, Gordon
name: Berk, Daniel Vanden
name: Hall, Patrick B.
name: Heckman, Timothy
name: Khare, Pushpa
name: Quashnock, Jean
name: Ghering, Lara
name: Johnson, Sean
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A search for emission lines in foreground galaxies in quasar spectra (z(gal) < z(QSO)) of the Sloan Digital Sky Survey (SDSS) data release 5 (DR5) reveals 23 examples of quasars shining through low redshift, foreground galaxies at small impact parameters (< 10 kpc). About 74,000 quasar spectra were examined by searching for narrow Hα emission lines at z < 0.38, at a flux level greater than 5 \times 10^-17 ergs cm^-2 s^-1, then confirming that other expected emission lines of the H II regions in the galaxy are detected. The galaxies were deblended from the quasar images to get colors and morphologies. For cases that allow the galaxy and the quasar to be deblended, the galaxies are blue (0.95
การศึกษาประเด็นทางกฎหมายเกี่ยวกับการศึกษาขั้นพื้นฐานโดยไม่มีค่าใช้จ่าย
Creators: name: สัญชัย นิระมล
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: ประเด็นทางกฎหมาย
สวัสดิการทางการศึกษา
การศึกษาขั้นพื้นฐานโดยไม่มีค่าใช้จ่าย

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 2, 84-97
Towards Macroscopic Quantum Effects Using Optomechanical and Optical Systems
Creators: name: Ghobadi, Roohollah
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Optics
subject: Quantum optomechanics
subject: Quantum Optics

description: In this thesis, I studied two different approaches which are promising for creating macroscopic quantum superpositions. The first approach, which is the main focus of this thesis, is based on optomechanical systems. The basic challenge to realize quantum effects in optomechanical systems, is considered to be the weak optomechanical coupling rate compared to the decoherence rates of the system caused by the cavity and mechanical damping. To enhance the optomechanical coupling it has been suggested to pump the cavity with coherent laser light \cite{Vitali07}. By this method the strong coupling regime in which the optomechanical coupling rate exceeds all decoherence rates has been demonstrated very recently \cite{Verhagen12,Groblacher09}. It is also known that the optomechanical systems may exhibit nonlinear behaviours such as bistability. After introducing the basic ideas of optomechanical systems in chapter 1, in chapter 2 we studied the connection between optomechanical entanglement and bistability. In chapter 3, we studied the drawback of using a laser to enhance the interaction. We studied the effect of the laser phase noise, as an additional decoherence channel, on the optomechanical entanglement. We have shown that the system is very sensitive to this new source of decoherence and the sensitivity is maximum in the bistable threshold. We discussed that our results are independent of how we model the laser phase noise. In chapter 4, we studied single photon optomechanics. In this regime, we proposed a new scheme to enhance the optomechanical coupling based on post selection. Our scheme is potentially promising to create a superposition of the massive oscillator in different motional states. We also discussed the potential application of our scheme to test some decoherence models. The second approach that we consider in this thesis is based on amplifying single photons with high gain to create micro-macro superpositions . In chapter 5, we discussed the De Martini scheme. We then present our scheme for creating optical micro-macro superposition and discussed its experimental realization under realistic conditions when losses are taken into account.
Magnetic quivers – a new perspective on supersymmetric gauge theories
Creators: name: Zhong, Zhenghao
Publisher: name: Imperial College London
Year: 2022

description: We focus on supersymmetric gauge theories with eight superchrages in spacetime dimensions d = 3, 4, 5, 6. These theories have very rich vacuum structures so our focus will be on their moduli spaces of vacua. For d =, 4, 5, 6, we look at the Higgs branch moduli space. The usual story is that the Higgs branch is a classical object that can be easily computed from its Lagrangian. However, non-perturbative contributions can enhance the Higgs branch and a classical description no longer works. In 6d N = (1, 0) and 5d N = (1, 0), these contributions originate from tensionless BPS-strings and massless gauge instantons respectively as we tune gauge coupling(s) to infinity. For 4d N = 2 theories, many gauge theories, and in particular superconformal field theories (SCFTs), do not even have a Lagrangian description. We offer a unifying solution to these problems in the form of magnetic quivers. These are 3d N = 4 gauge theories whose Coulomb branch is the same as the Higgs branch of the higher dimensional theories. Using brane systems of D_d−D_(d+2)−NS5, with the possible inclusion of Od orientifold planes, we show how the magnetic quivers of these theories can be extracted. Then, a) using the monopole formula we study the moduli space as an algebraic variety by computing its Hilbert series and b) using the new concept of Quiver subtraction we extract the phase diagram (Hasse diagram) of these moduli spaces. Examples we explore include 5d SQCD theories at UV fixed point, 4d rank one SCFTs, class S theories, S-fold theories etc. For the second outcome of the thesis, we focus on new features of gauge theories with orthosymplectic gauge groups such as discrete subgroups and non-simply laced edges, leading to a general classification of such theories. For the final outcome, we study gauge theories with a mixture of unitary and special unitary gauge groups which lead to a slew of new gauge theories related by 3d mirror symmetry.
Feedback from protoclusters does not significantly change the kinematic properties of the embedded dense gas structures
Creators: name: Zhou, J. W.
name: Dib, S.
name: Wyrowski, F.
name: Liu, T.
name: Li, S. H.
name: Sanhueza, P.
name: Juvela, M.
name: Xu, F. W.
name: Liu, H. L.
name: Baug, T.
name: Peng, Y. P.
name: Menten, K. M.
name: Bronfman, L.
name: Lee, C. W.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A total of 64 ATOMS sources at different evolutionary stages were selected to investigate the kinematics and dynamics of gas structures under feedback. We identified dense gas structures based on the integrated intensity map of H$^{13}$CO$^+$ J=1-0 emission, and then extracted the average spectra of all structures to investigate their velocity components and gas kinematics. For the scaling relations between velocity dispersion $σ$, effective radius $R$ and column density $N$ of all structures, $σ-N*R$ always has a stronger correlation compared to $σ-N$ and $σ-R$. There are significant correlations between velocity dispersion and column density, which may imply that the velocity dispersion originates from gravitational collapse, also revealed by the velocity gradients. The measured velocity gradients for dense gas structures in early-stage sources and late-stage sources are comparable, indicating gravitational collapse through all evolutionary stages. We quantitatively estimated the velocity dispersion generated by the outflows, inflows, ionized gas pressure and radiation pressure, and found that the ionized gas feedback is stronger than other feedback mechanisms. However, although feedback from HII regions is the strongest, it does not significantly affect the physical properties of the embedded dense gas structures. Combining with the conclusions in Zhou+2023 on cloud-clump scales, we suggest that although feedback from cloud to core scales will break up the original cloud complex, the substructures of the original complex can be reorganized into new gravitationally governed configurations around new gravitational centers. This process is accompanied by structural destruction and generation, and changes in gravitational centers, but gravitational collapse is always ongoing.
description: 15 pages, accepted for publication in Astronomy & Astrophysics
บทบาทธนาคารออมสินสาขาในสังกัดภาค 13 ที่มีต่อการพัฒนาความเป็นผู้ประกอบการให้กับลูกค้าสินเชื่อธุรกิจ
Creators: name: เบญจวรรณ พฤฒิจิระวงศ์
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: ความเป็นผู้ประกอบการ
การจัดการคุณภาพโดยรวม
ผลการดำเนินงานทางธุรกิจ

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 2, 98-110
Intranasal Insulin for Treatment of Diabetic Polyneuropathy
Creators: name: Korngut, Lawrence
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Neuroscience
subject: Medicine and Surgery
subject: Pharmacology
subject: Diabetes
subject: Insulin
subject: treatment
subject: Neuropathy

description: Intranasal insulin administration is a novel approach to slow the progression of diabetic polyneuropathy (DPN). We performed a pilot randomized controlled trial of intranasal insulin in 12 type 1 diabetes mellitus patients with DPN to assess safety. We administered intranasal insulin for 6 weeks using biweekly dose-escalation up to 160 IU/d or intranasal saline. The primary outcome measure was frequency of hypoglycaemia. Frequency of mild (mHG) and serious hypoglycaemic (sHG) events was recorded. Secondary outcomes included clinical (Utah Early Neuropathy Score (UENS)) and laboratory (corneal confocal microscopy and electrophysiology) measures. There were no differences in glycemia between groups after supervised initial administration. The 40 IU/d and 80 IU/d doses were safe and well tolerated with comparable mHG events between groups. One intranasal insulin subject suffered a sHG at home while receiving 160 IU/d. Intranasal insulin was safe and well tolerated at 40 and 80 IU/d.
KCTF Evolution of Trans-Neptunian Binaries: Connecting Formation to Observation
Creators: name: Porter, Simon
name: Grundy, William
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Recent observational surveys of trans-neptunian binary (TNB) systems have dramatically increased the number of known mutual orbits. Our Kozai Cycle Tidal Friction (KCTF) simulations of synthetic trans-neptunian binaries show that tidal dissipation in these systems can completely reshape their original orbits. Specifically, solar torques should have dramatically accelerated the semimajor axis decay and circularization timescales of primordial (or recently excited) TNBs. As a result, our initially random distribution of TNBs in our simulations evolved to have a large population of tight circular orbits. This tight circular population appears for a range of TNO physical properties, though a strong gravitational quadrupole can prevent some from fully circularizing. We introduce a stability parameter to predict the effectiveness of KCTF on a TNB orbit, and show that a number of known TNBs must have a large gravitational quadrupole to be stable.
description: 15 pages, accepted to Icarus
Advances in performance and automation of a single ytterbium ion optical clock
Creators: name: Tofful, Alexandra
Publisher: name: Imperial College London
Year: 2022

description: While the SI second is currently defined in terms of a microwave transition frequency in caesium, atomic clocks based on an optical transition are currently outperforming caesium clocks by up to two orders of magnitude. In order to fully exploit the potential accuracy achievable by optical clocks, the SI second needs to be redefined in terms of an optical frequency standard. The ¹⁷¹Yb⁺ ion is an excellent candidate thanks to the extremely narrow linewidth of its electric octupole (E3) transition and its particular insensitivity to external perturbations. This thesis is focused on the ytterbium ion optical clock at the National Physical Laboratory (NPL), consisting of a single ¹⁷¹Yb⁺ ion trapped in a radio frequency (RF) Paul trap and probed by ultrastable 467-nm light to excite the E3 transition. Improved measurement methods were developed for the evaluation of several systematic frequency shifts. In particular, the electric quadrupole shift, which used to be the leading source of uncertainty, can now be directly measured with an accuracy in the low parts in 10¹⁸. A great focus was put on the automation of several aspects of the experiment. Because all optical clocks generally require a lot of maintenance and attention during their operation, many experimental routines were automated in order to minimise the requirement for human intervention. Furthermore, the analysis of almost all systematic shifts was automated, requiring minimal manual input so that shifts could be evaluated on the fly. Finally, a generalised framework was developed for the automatic evaluation of the absolute frequency of the optical clock via the International Atomic Time (TAI). In order to increase the confidence in the level of performance of the ytterbium ion optical clock, international clock comparison campaigns are regularly carried out. Between 2019 and 2022, several results were produced: two absolute frequency measurements via TAI with an uncertainty at the 1 × 10⁻¹⁵ level; two local frequency ratio measurements between ¹⁷¹Yb⁺ (E3) and ⁸⁷Sr with an uncertainty in the low parts in 10¹⁷; three uncertainty budgets at the parts in 10¹⁸ level; and one measurement of the ratio of the octupole and quadrupole optical clock transitions in ¹⁷¹Yb⁺ with an uncertainty of 1.5 × 10⁻¹⁶. All of these results are shown to be consistent with each other and in good agreement with the literature. Furthermore, a prototype optically-steered time scale was successfully demonstrated for the first time at NPL with the contribution of both the ¹⁷¹Yb⁺ and ⁸⁷Sr optical clocks.
MAKTABGACHA TAʼLIM TASHKILOTIDA PANTAMIMA VA MIMIKA ORQALI BOLALAR ZEHNINI OSHIRISH
Creators: name: Ishquvatova, Zaynab
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqolada maktabgacha taʼlim tashkilotida pantamima va mimika orqali bolalar zehnini oshirish, ijodiy fikrlashini shakllantirish, o'yin orqali bolalarda bilish jarayonlarini rivojlantirish, dunyoqarashini kengaytirish, savodxonligini oshirish hamda aqliy, tarbiyaviy jarayonlaridagi namoyon bo'luvchi  qobiliyatlarining pantomima va mimika jarayonida shakllanishi haqida batafsil yoritib o'tilgan.
A Study on Energy-Efficiency in Multimedia Streaming
Creators: name: Liu, Yongxin
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Computer Science
subject: multimedia
subject: Energy
subject: Streaming
subject: measurement
subject: power

description: The increasing demand for multimedia content imposes a heavy workload on the content sources and routers, leading to high energy bills. Among many works towards greening the Internet, very little attention has been paid to make the entire multimedia streaming system energy-efficient, from source to end-users. In this thesis, we perform an energy measurement of the entire multimedia streaming system, and conclude that the energy usage is affected by the session size, the underlay network setting, and network infrastructure. Based on the measurement, we propose E2Stream, an application-layer approach to make the multimedia streaming energy-efficient. Our evaluation results show that E2Stream is effective in reducing system-wide work-induced power, and is flexible in adapting to various network infrastructures and existing systems.
First Science Observations with SOFIA/FORCAST: Properties of Intermediate-Luminosity Protostars and Circumstellar Disks in OMC-2
Creators: name: Adams, Joseph D.
name: Herter, Terry L.
name: Osorio, Mayra
name: Macias, Enrique
name: Megeath, S. Thomas
name: Fischer, William J.
name: Ali, Babar
name: Calvet, Nuria
name: D'Alessio, Paola
name: De Buizer, James M.
name: Gull, George E.
name: Henderson, Charles P.
name: Keller, Luke D.
name: Morris, Mark R.
name: Remming, Ian S.
name: Schoenwald, Justin
name: Shuping, Ralph Y.
name: Stacey, Gordon
name: Stanke, Thomas
name: Stutz, Amelia
name: Vacca, William
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We examine eight young stellar objects in the OMC-2 star forming region based on observations from the SOFIA/FORCAST early science phase, the Spitzer Space Telescope, the Herschel Space Observatory, 2MASS, APEX, and other results in the literature. We show the spectral energy distributions of these objects from near-infrared to millimeter wavelengths, and compare the SEDs with those of sheet collapse models of protostars and circumstellar disks. Four of the objects can be modelled as protostars with infalling envelopes, two as young stars surrounded by disks, and the remaining two objects have double-peaked SEDs. We model the double-peaked sources as binaries containing a young star with a disk and a protostar. The six most luminous sources are found in a dense group within a 0.15 x 0.25 pc region; these sources have luminosities ranging from 300 L_sun to 20 L_sun. The most embedded source (OMC-2 FIR 4) can be fit by a class 0 protostar model having a luminosity of ~50 L_sun and mass infall rate of ~10^-4 solar masses per year.
description: Accepted by ApJ Letters
ตัวชี้วัดความน่าเชื่อถือของตราสินค้าองค์กรข่าวในประเทศไทย
Creators: name: นฤมล สิงหประเสริฐ
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: ตัวชี้วัดความน่าเชื่อถือของตราสินค้าองค์กรข่าว
ตัวชี้วัดด้านสื่อ
ตัวชี้วัดด้านข่าว
ตัวชี้วัดด้านบุคลากรข่าว

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 2, 111-125
Phase Behaviour Study and Physical Properties Measurement for Athabasca Bitumen / Solvent Systems Applicable for Thermal and Hybrid Solvent Recovery Processes
Creators: name: KARIZNOVI, MOHAMMAD
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Engineering
subject: Engineering--Chemical
subject: Engineering--Petroleum
subject: Bitumen
subject: Phase Behaviour
subject: Solvent
subject: Experimental
subject: Modeling
subject: Thermal Process
subject: Hybrid Solvent Recovery Processes
subject: Optimazation

description: The development of solvent-based and hybrid (solvent + steam) processes is hampered by limited data and modeling methodologies for bitumen/solvent systems. The economics of these processes depend on the efficiency of oil recovery and solvent recycling, both of which are a function of the phase behaviour solvent/bitumen system. Additionally, accurate phase behaviour data are critical for pipeline transportation, surface upgrading, and the design of refinery processes. Despite its importance, the study of phase behaviour has received less attention. The quantitative effects of solvent on bitumen viscosity, density, and transport mechanisms are also not well understood. The main aim of this research is to achieve a better understanding of the phase behaviour of bitumen/solvent systems at high temperatures approaching the conditions of in situ steam processes. The intention is not to develop recovery processes, but to provide the basic data and mechanistic understanding necessary for the quantitative assessment of these processes. This study focused on measuring and predicting the phase behaviour and thermo-properties of bitumen/solvent mixtures under different equilibrium conditions (single liquid, vapour-liquid, and liquid-liquid) over a wide range of temperatures (ambient to 200oC) and pressures (atmospheric to 10 MPa). An in-house pressure-volume-temperature (PVT) apparatus was designed and fabricated with a new, reliable phase detection method. The equilibrium properties of bitumen/solvent including phase composition, solubility, k-values, and thermo-physical properties (density and viscosity) which are required for the optimization of heated solvent-assisted bitumen recovery processes were experimentally measured. The experiments cover a wide range of solvents including hydrocarbon gases (methane and butane), carbon dioxide, and liquid hydrocarbons (pentane, heptane, and toluene). The effects of the equilibrium conditions (temperature and pressure) and the initial solvent concentration on the measured properties were investigated. The qualitative phase diagrams were also developed and evaluated based on the measurements and the volumetric behaviour of the mixtures. The correlation and prediction schemes were applied to represent the density and viscosity of raw bitumen and its mixtures diluted with liquid solvents. The bitumen was characterized and the Peng and Robinson equation of state was tuned and coupled with a characterization scheme to model the phase behaviour experimental data (density and solubility) for reservoir modeling purposes.
Scaling laws of passive tracer dispersion in the turbulent surface layer
Creators: name: Skvortsov, Alex
name: Jamriska, Milan
name: DuBois, Timothy C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Experimental results for passive tracer dispersion in the turbulent surface layer under stable conditions are presented. In this case, the dispersion of tracer particles is determined by the interplay of three mechanisms: relative dispersion (celebrated Richardson's mechanism), shear dispersion (particle separation due to variation of the mean velocity field) and specific surface-layer dispersion (induced by the gradient of the energy dissipation rate in the turbulent surface layer). The latter mechanism results in the rather slow (ballistic) law for the mean squared particle separation. Based on a simplified Langevin equation for particle separation we found that the ballistic regime always dominates at large times. This conclusion is supported by our extensive atmospheric observations. Exit-time statistics are derived from the experimental dataset and show a reasonable match with the simple dimensional asymptotes for different mechanisms of tracer dispersion, as well as predictions of the multifractal model and experimental data from other sources.
description: 5 pages, 3 figures, 1 table
Strongly-ordered infrared limits for subtraction counterterms from factorisation
Creators: name: Magnea, L.
name: Milloy, C.
name: Signorile-Signorile, C.
name: Torrielli, P.
name: Uccirati, S.
Publisher: name: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Year: 2022

description: After a brief introduction to the problem of subtraction of infrared divergences for high-order collider observables, we present a preliminary study of strongly-ordered soft and collinear multiple radiation from the point of view of factorisation. We show that the matrix elements of fields and Wilson lines that describe soft and collinear radiation in factorised scattering amplitudes can be re-factorised in strongly-ordered limits, providing a systematic method to compute them, to characterise their singularity structure, and to build local subtraction counterterms for strongly-ordered configurations. Our results provide tools for a detailed organisation of subtraction algorithms, in principle to all orders in perturbation theory.
การศึกษาการรับรู้กฎหมายควบคุมธุรกิจเครื่องดื่มแอลกอฮอล์ : มาตรการทางกฎหมายในการควบคุมการใช้เครื่องหมายการค้าของเครื่องดื่มแอลกอฮอล์กับผลิตภัณฑ์อื่น
Creators: name: พงค์ศักดิ์ เจ๊ะพงค์
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: เครื่องดื่มแอลกอฮอล์
เครื่องหมายการค้า
การโฆษณา
การควบคุมเครื่องดื่มแอลกอฮอล์

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 2, 126-138
Issues of gender in injection drug use : examining contextual circumstances of women’s first injecting experience and factors associated with treatment engagement.
Creators: name: Wood, Richard Alan
Publisher: name: University of British Columbia
Year: 2010

description: Women who inject drugs (IDU) are at elevated risk for drug-related harms. While there has been growing interest in first injecting experiences of IDU, less attention has been given to broader socio-cultural, structural and environmental risk conditions in which marginalized women live and injection risk practices and addiction treatment engagement occur. For this thesis, I sought to build on previous research by using gender-based analysis (GBA) to describe the risk environment of IDU women and examine gender differences in circumstances surrounding first injecting experiences and addiction treatment engagement among IDU in Vancouver. Between May 2005 and December 2007, cross-sectional data were drawn from a prospective cohort of 1,436 participants, including 496 women. GBA was used to identify gender differences in circumstances surrounding first injecting experiences and current addiction treatment enrolment. Risk environment, gendered violence and cultural safety conceptual lenses were used to inform the interpretation of findings. Regarding first injection experiences, associations were found between female gender and Aboriginal ancestry, receiving assisted injection, and intimate partner injection drug use as a reason for first injection, whereas syringe borrowing, injecting in public, first taught to inject by self, and curiosity as a reason for first injection were negatively associated with female gender. Current addiction treatment enrolment was reported by 597 (41.6%) participants – 220 women (89 Aboriginal) – and 377 men (69 Aboriginal). Among women age at first injection and having an intimate partner were associated with treatment enrolment, whereas Aboriginal ancestry, homelessness, and frequent heroin injection were negatively associated. Among men, age at first injection was associated, whereas Aboriginal ancestry, homelessness, frequent alcohol and frequent heroin were negatively associated. Methadone was the most common type of addiction treatment reported by both genders. Most common reasons for non-enrolment were ‘don’t feel a need to stop using drugs’ for women, and ‘don’t think treatment programs work for me’ for men. Findings suggest intimate partner power relations are significant factors in mediating women’s drug using risk practices as well as the perceived degree of safety in accessing health services. These findings contribute to existing literature and provide significant implications for practice, policy and future research.
Constraining the origin of UHECRs and astrophysical neutrinos
Creators: name: Muzio, M. S.
name: Farrar, G. R.
name: Unger, M.
Publisher: name: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Year: 2022

description: We explore the possibility of a common origin of ultrahigh energy cosmic rays (UHECRs) and astrophysical neutrinos and further constrain sources which are consistent with this possibility. We show that the common origin hypothesis can be satisfied for the Sibyll2.3c hadronic interaction model but is difficult to accommodate for EPOS-LHC, showing that multimessenger analyses have the power to also constrain hadronic physics beyond LHC energies. We constrain properties of UHECR source environments (and potentially astrophysical neutrino sources), including their photon temperature, gas density, size, magnetic field strength and coherence length, using UHECR and neutrino spectra and composition. Our analysis represents a new type of information on UHECR sources, independent of the mechanism responsible for the UHECR acceleration.
Engineered 2D Ising interactions on a trapped-ion quantum simulator with hundreds of spins
Creators: name: Britton, Joseph W.
name: Sawyer, Brian C.
name: Keith, Adam C.
name: Wang, C. -C. Joseph
name: Freericks, James K.
name: Uys, Hermann
name: Biercuk, Michael J.
name: Bollinger, John. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The presence of long-range quantum spin correlations underlies a variety of physical phenomena in condensed matter systems, potentially including high-temperature superconductivity. However, many properties of exotic strongly correlated spin systems (e.g., spin liquids) have proved difficult to study, in part because calculations involving N-body entanglement become intractable for as few as N~30 particles. Feynman divined that a quantum simulator - a special-purpose "analog" processor built using quantum particles (qubits) - would be inherently adept at such problems. In the context of quantum magnetism, a number of experiments have demonstrated the feasibility of this approach. However, simulations of quantum magnetism allowing controlled, tunable interactions between spins localized on 2D and 3D lattices of more than a few 10's of qubits have yet to be demonstrated, owing in part to the technical challenge of realizing large-scale qubit arrays. Here we demonstrate a variable-range Ising-type spin-spin interaction J_ij on a naturally occurring 2D triangular crystal lattice of hundreds of spin-1/2 particles (9Be+ ions stored in a Penning trap), a computationally relevant scale more than an order of magnitude larger than existing experiments. We show that a spin-dependent optical dipole force can produce an antiferromagnetic interaction J_ij ~ 1/d_ij^a, where a is tunable over 0
description: 10 pages, 10 figures; article plus Supplementary Materials
Mixed QCD-Electroweak corrections to the Drell-Yan process in the high invariant mass region
Creators: name: Signorile-Signorile, C.
Publisher: name: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Year: 2022

description: We report on the calculation of mixed QCD-electroweak corrections to the neutral-current- mediated production of a pair of massless leptons in the high invariant mass region. We find these corrections to be $O$(−1%) at relatively low values of the dilepton invariant mass, around 200 GeV. For invariant masses larger than 1 TeV, we observe that mixed corrections are larger, $O$(−3%), and are well reproduced by the product of next-to-leading order QCD and electroweak corrections. These results emphasise the importance of mixed QCD-electroweak corrections in Drell-Yan process studies, where percent-level precision is being targeted.
Mechanisms underlying marine macroalgal invasions : understanding invasion success of Sargassum muticum
Creators: name: White, Laura Linsey Fallaize
Publisher: name: University of British Columbia
Year: 2010

description: This thesis examines different aspects of invasion success of the brown macroalga Sargassum muticum. Chapter two investigates the relationship between native diversity and invasibility by S. muticum in experimental and unmanipulated communities of low intertidal macroalgae. I found that diversity effects on invasion varied from positive to negative with life history stage of the invader. Native diversity facilitated recruitment of S. muticum, but decreased growth and or survivorship. Phenological differences between S. muticum and native macroalgal species may contribute to the success of this invader in British Columbia. Chapter three explores the effects of S. muticum on native macroalgal diversity at different densities by manipulating exotic density in natural communities. I found that the effects of S. muticum on native macroalgal richness were both density and time dependent, and are mediated through competition for light. The reciprocal interaction between S. muticum and native macroalgal diversity has shown effects in both directions, and suggest some degree of symmetry in the interaction between non-native S. muticum and native macroalgae. Chapter four examines whether non-native S. muticum is less grazed than native macroalgae in British Columbia, and whether the concentrations of defensive polyphenolic compounds in the tissue of the exotic differ from native conspecifics. In contrast to the predictions of the Enemy-Release Hypothesis, I showed that when presented a choice, native herbivores do not discriminate between native and non-native macroalgae. The levels of polyphenolic defenses in the exotic were similar to some native macroalgae, suggesting differences in polyphenolic concentrations are not influencing herbivore choice. Reduced grazing of non-native S. muticum by native herbivores is not contributing to the success of this invasive in British Columbia. Chapter five tests two predictions of the Evolution of Increased Competitive Ability hypothesis; whether S. muticum in non-native regions attains greater sizes and lower chemical defenses than conspecifics in the native region. We compared the size (as a measure of performance) and levels of polyphenolic defenses of S. muticum from its native and invaded regions. My preliminary results suggest that in non-native regions, S. muticum attains larger sizes with lower levels of defensive polyphenolic compounds than native regions.
Field Evaluation of a Displacement Ventilation System for a Cold Climate School
Creators: name: Sabbagh, Mostafa Jafar A
Publisher: name: Environmental Design
Year: 2013
Subjects: subject: Architecture
subject: FOS: Civil engineering
subject: Displacement Ventilation
subject: Thermal Comfort
subject: Indoor Air Quality
subject: Temperature Stratification
subject: Ventilation Effectiveness
subject: Contaminate Removal Effectiveness

description: Displacement ventilation (DV) is believed to provide better indoor air quality for a given outdoor air flow rate. Few reports of field assessments of DV have been published, especially for cold climates. A post-occupancy study of DV performance was conducted at Lawrence Grassi Middle School (LGMS), located within Alberta’s cold-dry climate. The DV performance evaluation addressed vertical temperature profile, ventilation effectiveness (VE), and thermal comfort in five spaces (three classrooms, the computer lab, and the library) during three different seasons. This study included testing of parameters that may affect DV performance such as: door position, season, occupancy density, thermal loads, ventilation rate, and radiant surfaces temperature. Field evaluation suggested that DV could provide improved thermal comfort and VE compared to conventional (i.e., mixing ventilation) systems when operated as prescribed in the literature. At LGMS, performance indices clearly showed that DV in classrooms was functioning as one would expect. The library had a clear short-circuit due to high supply air discharge temperature and a reversed temperature profile. The computer lab showed similarity to typical DV performance, with lower VE and cooler thermal environment than the classrooms. Thermal comfort indices reflected an overall thermal environment that was cooler than neutral, especially near the floor. This was largely due to a radiant slab colder than comfort limits. Thermal comfort indices leaned toward the cooler edge of comfort limits. Comparing spaces, the classrooms had the best comfort levels, followed by the computer lab and then the library.
TingEtAl2020_RDMP_Chapter3: Robust Valence-Induced Bias on Reaction Time and Confidence
Creators: name: C. Ting
Publisher: name: University of Amsterdam / Amsterdam University of Applied Sciences
Year: 2020
Subjects: subject: Psychology
subject: FOS: Psychology
subject: Social Science

description: This folder consists of Research Data Management Plan (RDMP) for PhD thesis - Chapter 3: Robust Valence-Induced Biases on Motor Response and Confidence in Human Reinforcement Learning
Tricritical quantum point and inflationary cosmology
Creators: name: Crowell, Lawrence B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The holographic protection due to inflationary cosmology is a conse- quence of a quantum tricritical point. In this scenario a closed spacetime solution transitions into an inflationary de Sitter spacetime. Saturation of the holographic entropy bound is prevented by the phase change in the topology of the early universe.
description: This essay received an honorable mention in the 2012 Essay Competition of the Gravity Research Foundation. submitted to IJMPD
Nanoparticle-mediated Heavy Oil Hydro and Thermal Cracking
Creators: name: Alkhaldi, Salman Jarallah
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Engineering--Chemical
subject: Nanoparticles
subject: Heavy Oil Upgrading
subject: cracking

description: Abstract In this study, metallic nickel and alumina ultradispersed nanoparticles were prepared in-situ in heavy oil phases composed of vacuum residue, VR, and vacuum gas oil, VGO, by means of reduction or thermal decomposition of dispersed aqueous precursors of the metals. The catalytic activity of the nickel and the alumina nanoparticles towards hydrocracking and thermalcracking of the heavy oil was assessed. The thermal behavior of adsorbed materials onto the in-situ prepared as well as commercial Al2O3 nanoparticles was studied under an oxidizing atmosphere. Results suggested that commercial Al2O3 has more adsorption affinity towards hydrocarbons from the heavy oil. Accordingly, ultradispersed commercial Al2O3 nanoparticles were employed for the thermalcracking of an even heavier crude. Results show that the Ni0 was converted to Ni3S2 during the hydrocracking experiment. The catalyst promoted hydrogenation and free radical reactions and resulted in 50% reduction in asphaltenes and 70% reduction in resins, while improving the aromatics and saturates fractions. Two fold increase in the gaseous fraction and around 47% conversion of the residue, conv545+oC, occurred in the presence of the ultradispersed Ni catalyst. Alumina nanoparticles, on the other hand, contributed to the adsorption and thermalcracking of the heavy hydrocarbons. Uptake values and thermal behavior of adsorbed species with and without heptane or DCM washing suggested different types of adsorbed hydrocarbons between the in-situ prepared and the commercial alumina particles. Significant reduction in the viscosity and increase in the oAPI gravity were reported for samples undergoing thermalcracking for 2 h while containing 10000 ppm of alumina nanoparticles under 400°C, 0 rpm in a batch system arrangement. These conditions also resulted in the highest resins to asphaltenes, R/A, ratio and, thus the most stable product.
Metastable convergence theorems
Creators: name: Avigad, Jeremy
name: Dean, Edward
name: Rute, Jason
Publisher: name: arXiv
Year: 2011
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 28A20, 03F60

description: The dominated convergence theorem implies that if (f_n) is a sequence of functions on a probability space taking values in the interval [0,1], and (f_n) converges pointwise a.e., then the sequence of integrals converges to the integral of the pointwise limit. Tao has proved a quantitative version of this theorem: given a uniform bound on the rates of metastable convergence in the hypothesis, there is a bound on the rate of metastable convergence in the conclusion that is independent of the sequence (f_n) and the underlying space. We prove a slight strengthening of Tao's theorem which, moreover, provides an explicit description of the second bound in terms of the first. Specifically, we show that when the first bound is given by a continuous functional, the bound in the conclusion can be computed by a recursion along the tree of unsecured sequences. We also establish a quantitative version of Egorov's theorem, and introduce a new mode of convergence related to these notions.
ผลการจัดการเรียนรู้ตามแนวคิดการสอนภาษาเพื่อการสื่อสารโดยบูรณาการเทคนิคผังงานที่มีต่อความสามารถ ด้านไวยากรณ์ภาษาอังกฤษของนักเรียนชั้นมัธยมศึกษาปีที่ 3 ในโรงเรียนสังกัดสำนักงานเขตพื้นที่การศึกษามัธยมศึกษาชลบุรี ระยอง
Creators: name: สหรัฐ ลักษณะสุต
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2566
Subjects: การสอนภาษาเพื่อการสื่อสาร
เทคนิคผังงาน
ความสามารถด้านไวยากรณ์
เจตคติที่มีต่อการเรียนไวยากรณ์ภาษาอังกฤษ

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 17, 2, 139-151
Hot electron induced chemistry on gold nanostars
Creators: name: Zhang, Mingtong
Publisher: name: Imperial College London
Year: 2022

description: Nanomaterials have been widely studied over the past decades and one of their potentials is as a source of plasmonic hot electrons. Hot electrons are energetic electrons produced from the decay of the surface plasmon of nanomaterials under irradiation. Studies report that hot electrons can be used to accomplish chemical reactions that are hard to achieve in conventional chemical processes. However, the mechanism of hot electron induced chemical reactions remains unclear and only a few anomaterial species have been studied in this field. In this project, surfactant-free gold nanostars were used as the hot electron source to induce chemical reactions. Ag(CN)2-, Ag+, and 4-Nitrothiophenol (4-NTP) were successfully reduced in the presence of gold nanostars under different conditions. The results were characterized by ultraviolet-visible (UV-Vis) spectroscopy, electron microscopy, energy dispersive X-ray spectroscopy (EDX), and surface enhanced Raman spectroscopy (SERS). It was found that Ag(CN)2- was reduced to form silver in the absence of light, while Ag+ reduction required irradiation of specific wavelengths. 4-NTP molecules were reduced to from 4-aminothiophenol (4-ATP) in ambient conditions. It is proposed that a hybridized state might be important in hot electron transfer processes. However, further work such as computation studies are still required to verify the proposed mechanisms.
Constraining the anisotropic expansion of the universe with type ia supernovae and improving the treatment of selection effects within bayesian hierarchical models
Creators: name: Rahman, Wahidur
Publisher: name: Imperial College London
Year: 2022

description: In thesis, I aim to apply advanced methods in Bayesian statistical modelling on Type Ia Supernovae (SNIa) data to determine tighter constraints on the fiducial Lambda-Cold-Dark-Matter (LCDM) cosmology and improve the modelling of systematic uncertainties in the data. The body of work covered herein can be broadly classified into two main topics: I re-examine the contentious question of constraints on anisotropic expansion from SNIa in the light of a novel determination of peculiar velocities, which are crucial to test isotropy with SNe, out to distances < 200/h Mpc.The Bayesian hierarchical model BAHAMAS is adopted to constrain a dipole in the distance modulus in the context of the LCDM model and the deceleration parameter in a phenomenological Cosmographic expansion. I find no evidence for anisotropic expansion, and place a tight upper bound on the amplitude of a dipole, in a LCDM setting, and the Cosmographic expansion approach. Using Bayesian model comparison, I obtain posterior odds in excess of 900:1 (640:1) against a constant-in-redshift dipole for LCDM (Cosmographic expansion). One of the modern problems of Supernovae cosmology is accounting for selection effects caused by Malmquist bias in a principled way. Here, I present a complete formalism for handling selection effects in Type Ia supernova (SNIa) cosmology in the context of Bayesian Hierarchical Modeling. I demonstrate the method on simulated data sets where selection cuts are made on the apparent magnitude and show that previous results by Rubin et al, (2015) are incorrect and can lead to biased cosmological parameters reconstruction. I how this formalism is easily extended to include the Phillips corrections that are used to standardize SNe. The formalism presented exhibits better statistical properties in terms of bias and mean squared error relative to a traditional ad hoc style correction and the model of Rubin et al, (2015)
CONCEPTION OF AN ANTENNA ARRAY FOR RECTENNA SYSTEM AT 5.80 GHz
Creators: name: SALAH IHLOU
name: AHMED EL ABBASSI
name: ABDELMAJID BAKKALI
name: HAFID TIZYI
Publisher: name: Zenodo
Year: 2023
Subjects: Micro Strip Antenna, MPT, UAV, Rectenna, and Patch Antenna Array.

description: Abstract
This research digs into the difficult process: building and designing an outstanding performance. 2 X 2 triangular micro strip patches array with straight polarization for the specific area of microwaves energy transfer (MPT). The resulting antenna array was meticulously designed utilizing powerful CST and ADS simulation software and has a perfect operational time period of 5.8 GHz. The findings of our study emphasize the usefulness of this antennas array. It has an outstanding gain of 11.2 dB, indicating its remarkable signal amplification capability. Likewise, its return loss is extremely low, measuring around -28.67 dB, demonstrating its ability to reduce the reflection of signals and loss. At the main frequency of 5.8 GHz, the set of antennas exhibits a highly advantageous axial ratio of below 0.52 dB, demonstrating its ability to maintain signal polarization integrity. In essence, this study not only describes the unusual layout of this radio array, but also demonstrates its practical use in the area of microwave power transfer, thereby furthering the field of antennas engineering as well as technology.