cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Properties of Soft Semi-open and Soft semi-closed Sets
Creators: name: Hussain, Sabir
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics

description: Molodstov[10] introduced soft set theory as a new mathematical approach for solving problems having uncertainties. Many researchers worked on the findings of structures of soft set theory and applied to many problems having uncertainties. Recently, Bin Chen [3-4] introduced and explored the properties of soft semi-open sets and soft-semi-closed sets in soft topological spaces. In this paper we continue to investigate the properties of soft semi-open and soft semi-closed sets in soft topological spaces. We define soft semi-exterior, soft semi-boundary, soft semi-open neighbourhood and soft semi-open neighbourhood systems in soft topological spaces. Moreover we discuss the characterizations and properties of soft semi-interior, soft semi-exterior, soft semi-closure and soft semi-boundary. We also develop the relationship between soft semi-clopen sets and soft semi-boundary. The addition of this topic in literature will strengthen the theoretical base for further applications of soft topology in decision analysis and information systems.
description: This paper have been published in Pensee Journal in Vol 76, No. 2;Feb 2014
Environmental Effects of Star-Forming Cores on Mass Accretion Rate
Creators: name: Nozaki, Shingo
name: Machida, Masahiro N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We calculate the evolution of cloud cores embedded in different envelopes to investigate environmental effects on the mass accretion rate onto protostars. As the initial state, we neglect the magnetic field and cloud rotation, and adopt star-forming cores composed of two parts: a centrally condensed core and an outer envelope. The inner core has a critical Bonnor-Ebert density profile and is enclosed by the outer envelope. We prepare 15 star-forming cores with different outer envelope densities and gravitational radii, within which the gas flows into the collapsing core, and calculate their evolution until $\sim 2 \times10^5$ yr after protostar formation. The mass accretion rate decreases as the core is depleted when the outer envelope density is low. In contrast, the mass accretion rate is temporarily enhanced when the outer envelope density is high and the resultant protostellar mass exceeds the initial mass of the centrally condensed core. Some recent observations indicate that the mass of prestellar cores is too small to reproduce the stellar mass distribution. Our simulations show that the mass inflow from outside the core contributes greatly to protostellar mass growth when the core is embedded in a high-density envelope, which could explain the recent observations.
description: Accepted for publication in MNRAS. 16 pages, 10 figures
Pilot plant study of carbon dioxide capture by aqueous monoethanolamine
Creators: name: Dugas, Ross Edward
Publisher: name: The University of Texas at Austin
Year: 2006
Subjects: Carbon dioxide capture
Monoethanolamine
Absorber liquid

description: This work serves as a baseline for CO₂ capture using monoethanolamine (MEA). MEA is an appropriate choice for a baseline study since it is the most mature and common solvent for CO₂ capture from coal fired power plants. This work serves as a comparison to the piperazine/potassium carbonate solvent currently being tested by the Rochelle research group, as well as any future solvents that may be tested. A close-looped absorption/stripping pilot plant with 42.7 cm ID columns was used to capture CO₂ using an 32.5 wt% aqueous MEA solution. Both the absorber and stripper contained 20 ft of packing. The pilot plant campaign consisted of 48 runs at 24 operating conditions over a period of about one month. Various packings, lean CO₂ loadings, gas and liquid rates, and stripper pressures were tested. The CO₂ material and heat balances converged within 6.5 and 6.9%, respectively. The temperature bulge for the absorber ranged from 2-45°C. The bulge was located at the top of the absorber with L/G less than 5 kg/kg and at the bottom of the absorber with L/G greater than 6 kg/kg. Flexipac 1Y, a structured metal packing, achieved approximately 1.5-2 times more mass transfer than IMTP #40, a random metal packing, due an increased wetted area. The calculated K[subscript G] for Flexipac 1Y and IMTP #40 matched values showed similar trends to data previously in a wetted wall column. The MEA/Flexipac 1Y data had mass transfer coefficients similar to those obtained using Flexipac 1Y with the potassium carbonate/piperazine, but operated at significantly lower partial pressures. Measured heat duties for the pilot plant ranged from 369 to 1690 MJ/hr. These reboiler duties were especially high due to a lack of adequate preheat before the stripper. Vacuum stripping at 69 kPa was performed successfully without operational difficulties. Some of the pilot plant data was modeled in Aspen Plus using a RateFrac model previously created by Freguia (2002). Both absorber and stripper conditions were simulated. Results from absorber conditions using IMTP #40 were fairly close to the actual pilot plant. Absorber conditions with Flexipac 1Y predicted higher required packing heights to obtain the measured results. Stripper simulations were ineffective due to the limitations of the model. Reactions in the stripper are calculated as instantaneous reactions contrary to the rate based reactions in the absorber
Development and validation of new disease-specific measures of somatization and comorbidity in IBS
Creators: name: Whitehead, William E.
name: MacLean, Elizabeth W.
name: Palsson, Olafur S.
name: Turner, Marsha J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: To create and validate empirically derived questionnaires that measure non-gastrointestinal symptoms and disorders that co-exist with irritable bowel syndrome (IBS).
Quantum ensembles and the statistical operator: a tutorial
Creators: name: Zhan, Yinxiù
name: Paris, Matteo G. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The main purpose of this tutorial is to elucidate in details what should be meant by ensemble of states in quantum mechanics, and to properly address the problem of discriminating, exactly or approximately, two different ensembles. To this aim, we review the notion and the definition of quantum ensemble as well as its relationships with the concept of statistical operator in quantum mechanics. We point out the implicit assumptions contained in introducing a correspondence between quantum ensembles and the corresponding single-particle statistical operator, and discuss some issues arising when these assumptions are not satisfied. We review some subtleties leading to apparent paradoxes, and illustrate the role of approximate quantum cloning. In particular, we review some examples of practical interest where different (but equivalent) preparations of a quantum system, i.e. different ensembles corresponding to the same single-particle statistical operator, may be successfully discriminated exploiting multiparticle correlations, or some a priori knowledge about the number of particles in the ensemble.
description: Tutorial paper (2014) for International Journal of Software and Informatics, ISSN 1673-7288. arXiv admin note: text overlap with arXiv:1110.6815
Machine learning algorithms using performance portability framework for Python
Creators: name: Shahzad, Umair
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Kokkos
PyKokkos
Numpy
Scikit-learn
Performance portability
Machine learning
Naive Bayes
Logistic Regression

description: In the past decade, C++ has emerged as one of the main languages for high performance computing. Frameworks such as OpenMP, CUDA, and HIP target different hardware architectures and have different APIs. The Kokkos programming model provides a way to abstract the underlying APIs for different architectures and build code for different targets by configuring at compile time. Python programming language, on the other hand, is one of the top choices for developers today because of its ease of use and the fact that most recent machine learning and data science libraries are developed targeting this language. To provide performance portability in Python as well, PyKokkos was developed. PyKokkos allows developers to write portable kernels which are translated to C++ Kokkos at runtime. This report provides an insight into the feasibility of implementing machine learning algorithms using PyKokkos. We first look into the performance difference in commonly used functions in basic machine learning algorithms like, variance, log, transpose, etc. when implemented in PyKokkos as compared to NumPy. We then implement Scikit-learn’s Gaussian Naive Bayes and Logistic Regression using PyKokkos, and discuss the performance differences in the two implementations. The results show evidence that performance gains from using PyKokkos can be significant for individual functions, and further work is needed to enable efficient algorithms.
All-optical coherent control of vacuum Rabi oscillations
Creators: name: Bose, Ranojoy
name: Cai, Tao
name: Choudhury, Kaushik Roy
name: Solomon, Glenn S.
name: Waks, Edo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: When an atom strongly couples to a cavity, it can undergo coherent vacuum Rabi oscillations. Controlling these oscillatory dynamics quickly relative to the vacuum Rabi frequency enables remarkable capabilities such as Fock state generation and deterministic synthesis of quantum states of light, as demonstrated using microwave frequency devices. At optical frequencies, however, dynamical control of single-atom vacuum Rabi oscillations remains challenging. Here, we demonstrate coherent transfer of optical frequency excitation between a single quantum dot and a cavity by controlling vacuum Rabi oscillations. We utilize a photonic molecule to simultaneously attain strong coupling and a cavity-enhanced AC Stark shift. The Stark shift modulates the detuning between the two systems on picosecond timescales, faster than the vacuum Rabi frequency. We demonstrate the ability to add and remove excitation from the cavity, and perform coherent control of light-matter states. These results enable ultra-fast control of atom-cavity interactions in a nanophotonic device platform.
description: Supplement available upon request from R. Bose and E. Waks
Indoor Carbon Dioxide Reduction by Ornamental Plants: Comparison between Natural and Artificial Daylight
Creators: name: Itthi Plitsiri, Wannawit Taemthong
Publisher: name: TuEngr Group
Year: 2022
Subjects: Artificial daylight
Carbon dioxide
Indoor air quality
Natural daylight
Ornamental plant

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 13, 9, 13A9B: 1-12
Psychological stress and arterial stiffness in Korean Americans
Creators: name: Carlson, John
name: Logan, Jeongok G.
name: Rowsey, Pamela J.
name: Barksdale, Debra J.
name: Carlson, Barbara W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Arterial stiffness is identified as a causative factor for hypertension. The purpose of this study was to explore the relationship between psychological stress and arterial stiffness in Korean Americans.
Convergence to a non-trivial equilibrium for two-dimensional catalytic super-Brownian motion
Creators: name: Fleischmann, Klaus
name: Klenke, Achim
Publisher: name: Weierstrass Institute
Year: 1996
Subjects: subject: catalytic super-Brownian medium
subject: catalyst
subject: superprocess
subject: measure-valued branching
subject: non-extinction
subject: persistence
subject: two-dimensional process
subject: equilibrium state
subject: absolutely continuous states
subject: self-similarity
subject: time-space gaps of super-Brownian motion
subject: asymptotic density
subject: local L^2-Lipschitz continuity
subject: 60J80
subject: 60G57
subject: 60K35

description: In contrast to the classical super-Brownian motion (SBM), the SBM (Xϱt) t ≥ 0 in a super-Brownian medium ϱ (constructed in [DF96a]) is known to be persistent in all three dimensions of its non-trivial existence: The full intensity is carried also by all longtime limit points ([DF96a, DF96b, EF96]). Uniqueness of the accumulation point, however, has been shown so far only in dimensions d=1 and d=3 ([DF96a, DF96b]). Here we fill this gap and show that convergence also holds in the critical dimension d=2. We identify the limit as a random multiple of Lebesgue measure. Our main tools are a self-similarity of Xϱ in d=2 and the fact that the medium has "gaps" in the space-time picture. The self-similarity implies that persistent convergence of Xϱt as t → ∞ is equivalent to the absolute continuity of Xϱt at a fixed time t > 0. Absolute continuity however will be obtained via the fact that in absence of the catalytic medium, Xϱ is smoothed according to the heat flow.
[$α$/Fe] Abundances of Four Outer M 31 Halo Stars
Creators: name: Vargas, Luis C.
name: Gilbert, Karoline M.
name: Geha, Marla C.
name: Tollerud, Erik J.
name: Kirby, Evan N.
name: Guhathakurta, Puragra
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present alpha element to iron abundance ratios, [$α$/Fe], for four stars in the outer stellar halo of the Andromeda Galaxy (M 31). The stars were identified as high-likelihood field halo stars by Gilbert et al. (2012) and lie at projected distances between 70 and 140 kpc from M 31's center. These are the first alpha abundances measured for a halo star in a galaxy beyond the Milky Way. The stars range in metallicity between [Fe/H]= -2.2 and [Fe/H]= -1.4. The sample's average [$α$/Fe] ratio is +0.20+/-0.20. The best-fit average value is elevated above solar which is consistent with rapid chemical enrichment from Type II supernovae. The mean [$α$/Fe] ratio of our M31 outer halo sample agrees (within the uncertainties) with that of Milky Way inner/outer halo stars that have a comparable range of [Fe/H].
description: 6 pages, 5 figures, resubmitted to ApJ Letters after referee report
Fluid Inclusion Research: Proceedings of COFFI. Volume 5, 1972.
Creators: Roedder, Edwin, editor
Publisher: name: University of Alberta Library
Year: 1972

A yearly volume to provide communication between workers in various fields of research on fluid inclusions, using the term in its broadest sense to embrace inclusions of any fluid, gas, liquid, or melt, and in any natural material, terrestrial or extraterrestrial. Privately published each year, starting with 1968, at Reston, VA.
Potential Effect of Cardiovascular Disease Risk on the Development of Type 2 Diabetes Among Prediabetic Individuals_Supplementary Materials
Creators: name: Kim, Myung Jin
name: Cho, Yun Kyung
name: Jung, Chang Hee
name: LEE, WOO JE
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 329999
subject: Other biomedical and clinical sciences not elsewhere classified

description: This file is supplementary material for a paper exploring the impact of cardiovascular risk on the development of incident Type 2 diabetes in patients with prediabetes.
A double-blind, randomized pilot trial of chromium picolinate for binge eating disorder: Results of the Binge Eating and Chromium (BEACh) Study
Creators: name: Brownley, Kimberly A.
name: La Via, Maria
name: Hamer, Robert M.
name: Von Holle, Ann
name: Bulik, Cynthia M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Chromium treatment has been shown to improve mood, appetite, and glucose regulation in various psychiatric and medical patient populations. The authors propose that chromium may be useful in the treatment of binge eating disorder (BED).
Three discrete groups with homogeneous chemistry along the red giant branch in the globular cluster NGC 2808
Creators: name: Carretta, Eugenio
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the homogeneous reanalysis of Mg and Al abundances from high resolution UVES/FLAMES spectra for 31 red giants in the globular cluster NGC 2808. We found a well defined Mg-Al anticorrelation reaching a regime of subsolar Mg abundance ratios, with a spread of about 1.4 dex in [Al/Fe]. The main result from the improved statistics of our sample is that the distribution of stars is not continuous along the anticorrelation as they are neatly clustered into three distinct clumps each with different chemical composition. One group (P) shows the primordial composition of field stars of similar metallicity, and the other two (I and E) have increasing abundances of Al and decreasing abundances of Mg. The fraction of stars we found in the three components (P: 68%, I: 19%, E: 13%) is in excellent agreement with the number ratios computed for the three distinct main sequences in NGC 2808: for the first time there is a clear correspondence between discrete photometric sequences of dwarfs and distinct groups of giants with homogeneous chemistry. The composition of the I group cannot be reproduced by mixing of matter with extreme processing in hot H-burning and gas with pristine, unprocessed composition, as also found in the recent analysis of three discrete groups in NGC 6752. This finding suggests that different classes of polluters were probably at work also in NGC 2808.
description: 10 pages, 1 table, 4 figures; uses emulateapj; accepted for publication on Astrophysical Journal Letters
Equivalence and automorphism groups of two families of maximum scattered linear sets
Creators: name: Tang, Wei
name: Zhou, Yue
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Linear set in projective spaces over finite fields plays central roles in the study of blocking sets, semifields, rank-metric codes and etc. A linear set with the largest possible cardinality and the maximum rank is called maximum scattered. Despite two decades of study, there are only a few number of known maximum scattered linear sets in projective lines, including the family constructed by Csajbók, Marino, Polverino and Zanella 2018, and the family constructed by Csajbók, Marino, Zullo 2018 (also Marino, Montanucci, and Zullo 2020). This paper aims to solve the equivalence problem of the linear sets in each of these families and to determine their automorphism groups.
description: This is an English translation of the original Chinese version published in Scientia Sinica Mathematica
Binge eating, body mass index, and gastrointestinal symptoms
Creators: name: Bulik, Cynthia M.
name: Thornton, Laura M.
name: Huang, Lu
name: Overby, D. Wayne
name: Lichtenstein, Paul
name: Peat, Christine M.
name: Pedersen, Nancy L.
name: Trace, Sara E.
name: Von Holle, Ann F.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Symptoms of both gastroesophageal reflux disease (GERD) and irritable bowel syndrome (IBS) are frequently reported by individuals who binge eat. Higher body mass index (BMI) has also been associated with these disorders and with binge eating (BE). However, it is unknown whether BE influences GERD/IBS and how BMI might affect these associations. Thus, we examined the potential associations among BE, GERD, IBS, and BMI.
Which psychological factors exacerbate irritable bowel syndrome? Development of a comprehensive model
Creators: name: van Tilburg, Miranda A.L.
name: Palsson, Olafur S.
name: Whitehead, William E.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: There is evidence that psychological factors affect the onset, severity and duration of Irritable Bowel Syndrome (IBS). However, it is not clear which psychological factors are the most important and how they interact. The aims of the current study are to identify the most important psychological factors predicting IBS symptom severity and to investigate how these psychological variables are related to each other.
Are children and adolescents with food allergies at increased risk for psychopathology?
Creators: name: Angold, Adrian
name: Costello, E. Jane
name: Copeland, William E.
name: Zucker, Nancy
name: Shanahan, Lilly
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Living with food allergy is a unique and potentially life-threatening stressor that requires constant vigilance to food-related stimuli, but little is known about whether adolescents with food allergies are at increased risk for psychopathology—concurrently and over time.
MUAMMOLI TA'LIMDAN FOYDALANISH ORQALI TA'LIM OLUVCHILARNI MUSTAQIL FIKRLASHGA O'RGATISH
Creators: name: Xudayberganov, Shuxrat
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqolada muammoli ta’lim metodidan foydalanish orqali ta’lim oluvchilarning mustaqil fikrlash ko‘nikmalarini rivojlantirish masalasi yoritiladi. Muammoli ta’lim o‘quvchilarning faolligini oshirish, ularda mustaqil qaror qabul qilish va muammolarga ijodiy yondashish qobiliyatlarini shakllantirishga xizmat qiladi. Maqolada muammoli ta’limning mohiyati, uning asosiy tamoyillari va samaradorligi tahlil qilinadi. Shuningdek, ushbu metodning zamonaviy ta’lim tizimida qo‘llanilish istiqbollari, pedagogik yondashuvlar va amaliy natijalari ilmiy-nazariy asosda o‘rganiladi. Tadqiqot natijalariga ko‘ra, muammoli ta’lim texnologiyalarining samarali joriy etilishi ta’lim oluvchilarning tanqidiy va mustaqil fikrlash darajasini oshirishga ijobiy ta’sir ko‘rsatishi isbotlanadi.
Entanglement of a 3D generalization of the Kitaev model on the diamond lattice
Creators: name: Mondragon-Shem, Ian
name: Hughes, Taylor L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the entanglement properties of a three dimensional generalization of the Kitaev honeycomb model proposed by Ryu [Phys. Rev. B 79, 075124, (2009)]. The entanglement entropy in this model separates into a contribution from a $Z_2$ gauge field and that of a system of hopping Majorana fermions, similar to what occurs in the Kitaev model. This separation enables the systematic study of the entanglement of this 3D interacting bosonic model by using the tools of non-interacting fermions. In this way, we find that the topological entanglement entropy comes exclusively from the $Z_2$ gauge field, and that it is the same for all of the phases of the system. There are differences, however, in the entanglement spectrum of the Majorana fermions that distinguish between the topologically distinct phases of the model. We further point out that the effect of introducing vortex lines in the $Z_2$ gauge field will only change the entanglement contribution of the Majorana fermions. We evaluate this contribution to the entanglement which arises due to gapless Majorana modes that are trapped by the vortex lines.
description: 25 pages, 5 figures. Invited article to JSTAT Special Issue: Quantum Entanglement in Condensed Matter Physics
Binge eating and menstrual dysfunction
Creators: name: Ålgars, Monica
name: Von Holle, Ann F.
name: Huang, Lu
name: Bulik, Cynthia M.
name: Peat, Christine M.
name: Lichtenstein, Paul
name: Thornton, Laura M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: The relation between eating disorders and menstrual function has been widely studied, but it is unknown whether the behavior of binge eating itself is related to menstrual dysfunction.
Menstrual mood disorders are associated with blunted sympathetic reactivity to stress
Creators: name: Girdler, Susan
name: Forneris, Catherine A.
name: Klatzkin, Rebecca R.
name: Bunevicius, Adomas
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: AbstractObjectiveFew studies have directly compared women with a menstrually related mood disorder (MRMD) with women who have suffered from depression for stress reactivity phenotypes. It is unclear whether blunted responses to stress in women with a MRMD reflect a unique phenotype of MRMDs or may be explained by a history of depression.MethodsWe assessed cardiovascular reactivity to stress in four groups: 1) Women with a MRMD without a history of depression (n=37); 2) women with a MRMD plus a history of depression (n=26); 3) women without a MRMD and without a history of depression (n=43); and 4) women without a MRMD but with a history of depression (n=20).ResultsWomen with a MRMD showed blunted myocardial (heart rate and cardiac index) reactivity to mental stress compared to non-MRMD women, irrespective of histories of depression. Hypo-reactivity to stress predicted greater premenstrual symptom severity in the entire sample. Women with a MRMD showed blunted norepinephrine and diastolic blood pressure stress reactivity relative to women with no MRMD, but only when no history of depression was present. Both MRMD women and women with depression histories reported greater negative subjective responses to stress relative to their non-MRMD and never depressed counterparts.ConclusionOur findings support the assertion that a blunted stress reactivity profile represents a unique phenotype of MRMDs and also underscore the importance of psychiatric histories to stress reactivity. Furthermore, our results emphasize the clinical relevance of myocardial hypo-reactivity to stress, since it predicts heightened premenstrual symptom severity.
AIDS treatment and intrahousehold resource allocation: Children's nutrition and schooling in Kenya
Creators: name: Zivin, Joshua Graff
name: Thirumurthy, Harsha
name: Goldstein, Markus
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: The provision of antiretroviral medications is a central component of the response to HIV/AIDS and consumes substantial public resources from around the world, but little is known about this intervention’s impact on the welfare of children in treated persons’ households. Using longitudinal survey data from Kenya, we examine the relationship between the provision of treatment to adults and the schooling and nutrition outcomes of children in their households. Weekly hours of school attendance increase by over 20 percent within six months after treatment is initiated for the adult patient. We find some weak evidence that young children’s short-term nutritional status also improves. These results suggest how intrahousehold allocations of time and resources may be altered in response to health improvements of adults.
A Joint Calibration Technique for Improving Measurement Accuracy of Voltage and Current Probes During Synchronous Operation for RF Based Plasma Devices
Creators: name: Mahreen
name: Ganguli, A.
name: Gajula, Veda Prakash
name: Kar, Satyananda
name: Sahu, Debaprasad
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: This paper presents a joint calibration scheme for voltage (V) and current (I) probes that helps resolve accurately voltage-current phase differences even when the difference is very close to $90^{\circ}$. The latter has been a major issue with V-I probes when used with miniature RF plasma devices like the atmospheric pressure plasma jet (APPJ). Since the impedance of such miniature devices is predominantly capacitive, the phase difference between the voltage and current signals is very nearly $90^{\circ}$. It turns out, however, that when V-I probes are used with such devices without joint calibration, these frequently yield phase shifts over $90^{\circ}$. Also, since power absorption is proportional to the resistive part of the impedance it becomes very sensitive to the phase difference when it is close to $\approx90^{\circ}$. Thus, it is important to be able to resolve the phases accurately. Post-calibration, V-I probes would be indispensable for the electrical characterization of APPJs for determining average RF power $P_{av}$, plasma impedance $Z_p$, etc.Typical post-calibration V-I data yields, $Zp \approx 93.6 - j 1139 Ω (81.5 - j 1173 Ω)$ at $P_{av} \approx 9.8 W$ $(\approx7.7 W)$ for helium (argon) gas.
description: 18 pages, 3 figures
Concession stand makeovers: a pilot study of offering healthy foods at high school concession stands
Creators: name: Laroche, H. H.
name: Ford, C.
name: Hansen, K.
name: Hanks, A. S.
name: Wansink, B.
name: Just, D. R.
name: Cai, X.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Concession stands at high school events are exempt from the US Department of Agriculture regulations for school foods. Concessions are generally stocked with unhealthy foods since healthy foods are believed to have lower sales and profit margins.
Measuring Orthodontic Treatment Satisfaction: Questionnaire Development and Preliminary Validation
Creators: name: Bennett, M. Elizabeth
name: Camilla Tulloch, J. F.
name: Phillips, Ceib L.
name: Vlg, Katherine W. L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2001

description: The aims of this study were to develop a reliable self-report measure of consumer satisfaction with orthodontic treatment, and to preliminarily assess its validity.
A Survey of North Carolina Safety-Net Dental Clinics' Methods for Communicating with Patients of Limited English Proficiency (LEP)
Creators: name: Hammersmith, Kimberly J.
name: Lee, Jessica Y.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Dental providers are increasingly challenged in communicating with limited English proficiency (LEP) patients. Accordingly, the study’s purpose was to examine methods of communicating with LEP patients in North Carolina (NC) safety-net dental clinics as perceived by dental staff.
Topological self-dual vacua of deformed gauge theories
Creators: name: Oliva, Julio
name: Valenzuela, Mauricio
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a deformation principle of gauge theories in three dimensions that can describe topologically stable self-dual gauge fields, i.e., vacua configurations that in spite of their masses do not deform the background geometry and are locally undetected by charged particles. We interpret these systems as describing boundary degrees of freedom of a self-dual Yang-Mills field in $2+2$ dimensions with mixed boundary conditions. Some of these fields correspond to Abrikosov-like vortices with an exponential damping in the direction penetrating into the bulk. We also propose generalizations of these ideas to higher dimensions and arbitrary p-form gauge connections.
description: 18 pages
Flux-density spectral analysis for several pulsars and two newly-identified gigahertz-peaked spectra
Creators: name: Dembska, M.
name: Kijak, J.
name: Jessner, A.
name: Lewandowski, W.
name: Bhattacharyya, B.
name: Gupta, Y.
Publisher: name: arXiv
Year: 2014
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: In this paper we present results from flux density measurements for 21 pulsars over a wide frequency range, using the Giant Metrewave Radio Telescope (GMRT) and the Effelsberg telescope. Our sample was a set of mostly newly discovered pulsars from the selection of candidates for gigahertz-peaked spectra (GPS) pulsars. Using the results of our observations along with previously published data, we identify two new GPS pulsars. One of them, PSR J1740+1000, with dispersion measure of 24 pc cm$^{-3}$, is the first GPS pulsar with such a low DM value.We also selected several strong candidates for objects with high frequency turnover in their spectra which require further investigation.We also revisit our source selection criteria for future searches for GPS pulsars.
description: 10 pages, 2 tables, 9 figures, accepted for publication in MNRAS
Resolving the Discrepancy of Galaxy Merger Fraction Measurements at z ~ 0 - 3
Creators: name: Man, Allison W. S.
name: Zirm, Andrew W.
name: Toft, Sune
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We measure the merger fraction of massive galaxies using the UltraVISTA/COSMOS $Ks$-band selected catalog, complemented with the deeper, higher resolution 3DHST+CANDELS catalog selected in the HST/WFC3 $H$-band, presenting the largest mass-complete photometric merger sample up to $z\sim3$. We find that selecting mergers using the $H_{160}$-band flux ratio leads to an increasing merger fraction with redshift, while selecting mergers using the stellar mass ratio causes a diminishing redshift dependence. Defining major and minor mergers as having stellar mass ratios of 1:1 - 4:1 and 4:1 - 10:1 respectively, the results imply $\sim$1 major and $\lesssim$1 minor merger for an average massive (log$(M_{\star}/M_{\odot}) \geqslant 10.8$) galaxy during $z=0.1-2.5$. There may be an additional $\sim 0.5(0.3)$ major (minor) merger if we use the $H$-band flux ratio selection. The observed amount of major merging alone is sufficient to explain the observed number density evolution for the very massive (log$(M_{\star}/M_{\odot}) \geqslant 11.1$) galaxies. We argue that these very massive galaxies can put on a maximum of $6\%$ of stellar mass in addition to major and minor merging, so that their number density evolution remains consistent with observations. The observed number of major and minor mergers can increase the size of a massive quiescent galaxy by a factor of two at most. This amount of merging is enough to bring the compact quiescent galaxies formed at $z>2$ to lie at $1σ$ below the mean of the stellar mass-size relation as measured in some works (e.g. Newman et al. 2012), but additional mechanisms are needed to fully explain the evolution, and to be consistent with works suggesting stronger evolution (e.g. van der Wel et al. 2014).
description: Submitted to Astrophysical Journal. 25 pages, 12 figures, 6 tables
Four “Lessons Learned” While Implementing a Multi-Site Caries Prevention Trial
Creators: name: Ritter, Andre V.
name: Amaechi, Bennett T.
name: Laws, Reesa
name: Gilbert, Gregg H.
name: Funkhouser, Kimberly A.
name: Makhija, Sonia K.
name: Robinson, Debbie S.
name: Shugars, Daniel A.
name: Bader, James D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: As the number of dental-related randomized clinical trials (RCTs) increases, there is a need for literature to help investigators inexperienced in conducting RCTs design and implement studies. This commentary describes four “lessons learned,” or considerations important in the planning and initial implementation of RCTs in dentistry that to our knowledge have not been discussed in the general dental literature describing trial techniques. These considerations are 1) preparing or securing a thorough systematic review, 2) developing a comprehensive set of study documents, 3) designing and testing multiple recruitment strategies, and 4) employing a run-in period prior to enrollment. Attention to these considerations in the planning phases of a dental RCT can help ensure that the trial is clinically relevant while also maximizing the likelihood that its implementation will be successful.
The Natural Science Underlying Big History
Creators: name: Chaisson, Eric J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Other Quantitative Biology (q-bio.OT)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Nature's many varied complex systems (including galaxies, stars, planets, life, and society) are islands of order within the increasingly disordered universe. All organized systems are subject to physical, biological or cultural evolution, which together comprise the grander interdisciplinary subject of cosmic evolution. This is global history greatly extended, big history with a scientific basis, and natural history broadly portrayed across 14 billion years of time. Such evolution writ large has significant potential to unify the natural sciences into a holistic understanding of who we are and whence we came. No new science (beyond frontier, non-equilibrium thermodynamics) is needed to describe cosmic evolution's major milestones at a deep and empirical level. Quantitative models and experimental tests imply that a remarkable simplicity underlies the emergence and growth of complexity for a wide spectrum of known and diverse systems. In particular, energy rate density is an objective metric suitable to gauge relative degrees of complexity along a hierarchy of widely assorted systems observed throughout the material universe.
description: Review paper accepted for publication in The Scientific World Journal, v2014, 41 pages, article ID 384912; to be published in June 2014 at http://dx.doi.org/10.1155/2014/384912
Examiner Training and Reliability in Two Randomized Clinical Trials of Adult Dental Caries
Creators: name: Vollmer, William M.
name: Banting, David W.
name: Singh, Mabi L.
name: Gilbert, Gregg H.
name: Papas, Athena
name: Blanchard, Peter
name: Bader, James D.
name: Makhija, Sonia K.
name: Holland, Jan Carlton
name: Ritter, André V.
name: Amaechi, Bennett T.
name: Gullion, Christina M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: This report describes the training of dental examiners participating in two dental caries clinical trials and reports the inter- and intra- examiner reliability scores from the initial standardization sessions.
Extending periodic maps on surfaces over the 4-sphere
Creators: name: Wang, Shicheng
name: Wang, Zhongzi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57N35, 57M60

description: Let $F_g$ be the closed orientable surface of genus $g$. We address the problem to extend torsion elements of the mapping class group ${\mathcal{M}}(F_g)$ over the 4-sphere $S^4$. Let $w_g$ be a torsion element of maximum order in ${\mathcal{M}}(F_g)$. Results including: (1) For each $g$, $w_g$ is periodically extendable over $S^4$ for some non-smooth embedding $e: F_g\to S^4$, and not periodically extendable over $S^4$ for any smooth embedding $e: F_g\to S^4$. (2) For each $g$, $w_g$ is extendable over $S^4$ for some smooth embedding $e: F_g\to S^4$ if and only if $g=4k, 4k+3$. (3) Each torsion element of order $p$ in ${\mathcal{M}}(F_g)$ is extendable over $S^4$ for some smooth embedding $e: F_g\to S^4$ if either (i) $p=3^m$ and $g$ is even; or (ii) $p=5^m$ and $g\ne 4k+2$; or (iii) $p=7^m$. Moreover the conditions on $g$ in (i) and (ii) can not be removed .
description: 22 pages, 3 figures. To appear in Journal of Topology and Analysis
Multiple Imputation of Dental Caries Data Using a Zero Inflated Poisson Regression Model
Creators: name: Preisser, John S.
name: Rozier, R. Gary
name: Stearns, Sally C.
name: Pahel, Bhavna T.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: Excess zeros exhibited by dental caries data require special attention when multiple imputation is applied to such data.
Learning-based Predictive Path Following Control for Nonlinear Systems Under Uncertain Disturbances
Creators: name: Yang, Rui
name: Zheng, Lei
name: Pan, Jiesen
name: Cheng, Hui
Publisher: name: arXiv
Year: 2022
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: Accurate path following is challenging for autonomous robots operating in uncertain environments. Adaptive and predictive control strategies are crucial for a nonlinear robotic system to achieve high-performance path following control. In this paper, we propose a novel learning-based predictive control scheme that couples a high-level model predictive path following controller (MPFC) with a low-level learning-based feedback linearization controller (LB-FBLC) for nonlinear systems under uncertain disturbances. The low-level LB-FBLC utilizes Gaussian Processes to learn the uncertain environmental disturbances online and tracks the reference state accurately with a probabilistic stability guarantee. Meanwhile, the high-level MPFC exploits the linearized system model augmented with a virtual linear path dynamics model to optimize the evolution of path reference targets, and provides the reference states and controls for the low-level LB-FBLC. Simulation results illustrate the effectiveness of the proposed control strategy on a quadrotor path following task under unknown wind disturbances.
description: 8 pages, 7 figures, accepted for publication in IEEE Robotics and Automation Letters ( Volume: 6, Issue: 2, April 2021)
Excitation of helical shape argon atmospheric pressure plasma jet using RF pulse modulation
Creators: name: Khan, Mahreen
name: G., Veda Prakash
name: Kar, Satyananda
name: Sahu, Debaprasad
name: Ganguli, Ashish
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The article reports the excitation of a helical argon atmospheric pressure plasma jet using a pulse modulated 13.56 MHz radiofrequency (RF) power source. This helical structure is observed in open ambient air which is far different from the conventional conical shape. This helical structure originates due to the periodic pressure variation in the discharge region caused by pulse modulated RF (2 kHz modulation frequency (fp)) and propagates downstream into the ambient air. The geometrical characteristics of the observed structure are explored using optical imaging. Moreover, the influence of various input parameters viz., duty cycle (D), gas flow rate (Q), and RF power (P) of the modulated pulse on the formation of helical structure are studied. These helical structures have an implication on the plasma jet chemical features (enhancement of reactive oxygen and nitrogen species (RONS)) as these are involved in increase in air entrainment into the ionization region desired for various plasma applications.
description: 17 pages, 12 figures
Confirming the thermal Comptonization model for black hole X-ray emission in the low-hard state
Creators: name: Castro, M.
name: D'Amico, F.
name: Braga, J.
name: Maiolino, T.
name: Pottschmidt, K.
name: Wilms, J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Hard X-ray spectra of black hole binaries in the low/hard state are well modeled by thermal Comptonization of soft seed photons by a corona-type region with $kT$\thinspace$\sim 50${\thinspace}keV and optical depth around 1. Previous spectral studies of 1E{\thinspace}1740.7$-$2942, including both the soft and the hard X-ray bands, were always limited by gaps in the spectra or by a combination of observations with imaging and non-imaging instruments. In this study, we have used three rare nearly-simultaneous observations of 1E{\thinspace}1740.7$-$1942 by both XMM-Newton and INTEGRAL satellites to combine spectra from four different imaging instruments with no data gaps, and we successfully applied the Comptonization scenario to explain the broadband X-ray spectra of this source in the low/hard state. For two of the three observations, our analysis also shows that, models including Compton reflection can adequately fit the data, in agreement with previous reports. We show that the observations can also be modeled by a more detailed Comptonization scheme. Furthermore, we find the presence of an iron K-edge absorption feature in one occasion, which confirms what had been previously observed by Suzaku. Our broadband analysis of this limited sample shows a rich spectral variability in 1E{\thinspace}1740.7$-$2942 at the low/hard state, and we address the possible causes of these variations. More simultaneous soft/hard X-ray observations of this system and other black-hole binaries would be very helpful in constraining the Comptonization scenario and shedding more light on the physics of these systems.
description: 6 pages, two figures, accepted for publication in A&A
Oral Health Content of Early Education and Child Care Regulations and Standards
Creators: name: Kranz, Ashley M.
name: Rozier, R. Gary
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: Almost two out of every three U.S. children younger than five receive child care from someone other than their parents. Health promotion in early education and child care (EECC) programs can improve the general health of children and families, but little is known about the role of these programs in oral health. We identified U.S. EECC program guidelines and assessed their oral health recommendations for infants and toddlers.
Accuracy of record linkage software in merging dental administrative data sets: Accuracy of record linkage software
Creators: name: Preisser, John S.
name: Beil, Heather
name: Rozier, R. Gary
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: To determine the accuracy of record matching using “Link King” software that uses an ordinal score for the certainty that linked records are valid matches.
An Examination of Racial/Ethnic Disparities in Children’s Oral Health in the United States
Creators: name: Weintraub, Jane A.
name: Soobader, Mah-J
name: Fisher-Owens, Susan A.
name: Gansky, Stuart A.
name: Newacheck, Paul W.
name: Isong, Inyang A.
name: Platt, Larry J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Assess the extent apparent racial/ethnic disparities in children’s oral health and oral health care are explained by factors other than race/ethnicity.
Boosted Higgses from chromomagnetic $b$'s: $b\bar{b}h$ at high luminosity
Creators: name: Bramante, Joseph
name: Delgado, Antonio
name: Lehman, Landon
name: Martin, Adam
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This paper examines detection prospects and constraints on the chromomagnetic dipole operator for the bottom quark. This operator has a flavor, chirality and Lorentz structure that is distinct from other dimension six operators considered in Higgs coupling studies. Its non-standard Lorentz structure bolsters boosted $b \bar{b} h$ events, providing a rate independent signal of new physics. To date, we find this operator is unconstrained by $p p \rightarrow h + {\rm jets}$ and $pp \rightarrow \bar b b $ searches: for order-one couplings the permitted cutoff $Λ$ for this operator can be as low as $Λ\sim 1~{\rm TeV}$. We show how to improve this bound with collider cuts that allow a $b$-tagged Higgs plus dijet search in the Higgs to diphoton decay channel to exclude cutoffs as high as $\sim 6~{\rm TeV}$ at $2 σ$ with 3 $\text{ab}^{-1}$ of luminosity at the 14 TeV LHC. Cuts on the $p_T$ of the Higgs are key to this search, because the chromomagnetic dipole yields a non-standard fraction of boosted Higgses.
description: 21 pages, 7 figures, 4 tables