cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Regularity of partial differential operators in ultradifferentiable spaces and Wigner type transforms
Creators: name: Boiti, Chiara
name: Jornet, David
name: Oliaro, Alessandro
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We study the behaviour of linear partial differential operators with polynomial coefficients via a Wigner type transform. In particular, we obtain some results of regularity in the Schwartz space $\mathcal S$ and in the space ${\mathcal S}_ω$ as introduced by Björck for weight functions $ω$. Several examples are discussed in this new setting.
Siegfried J. de Laet (ed.), Progrès récents dans l’étude du Néolithique ancien / Sous ce titre, S. J. De Laet a édité les actes d’un colloque international organisé à Gand, les 21 et 22 mai 1982, par le groupe de contact F.N.R.S
Creators: name: Ulrix-Closset, Marguerite
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Siegfried J. de Laet (ed.), Progrès récents dans l’étude du Néolithique ancien. Dissertationes Archaeologicae Gandenses 21. De Tempel, Brugge 1983. 127 pages. Sous ce titre, S. J. De Laet a édité les actes d’un colloque international organisé à Gand, les 21 et 22 mai 1982, par le groupe de contact F.N.R.S. ’Prehistorie-Préhistoire', en collaboration avec le Séminaire d’archéologie de l’Université de Gand.
description: Bonner Jahrbücher, Bd. 185.1985: Bonner Jahrbücher
Struktur und Entwicklungsplan der Technischen Universität Hamburg-Harburg (TUHH) 2013 - 2018
Creators: name: Technische Universität Hamburg-Harburg (Ed.)
Publisher: name: TUHH Universitätsbibliothek
Year: 2014
Subjects: subject: Hamburg University of Technology
subject: strategic planning
classificationCode: 000
subject: Allgemeines, Wissenschaft

description: Die TUHH ist eine wettbewerbsorientierte, familiengerecht und nachhaltig handelnde Universität mit hohem Leistungs- und Qualitätsanspruch, die in der Grundlagenforschung und ihren Kompetenzfeldern Forschungsexzellenz anstrebt. Sie ist eine dem Humboldt’schen Bildungsideal verpfl ichtete, international orientierte Hochschule in der Metropolregion Hamburg. Sie leistet einen Beitrag zur Entwicklung der technisch-wissenschaftlichen Kompetenz der Gesellschaft, indem sie den ingenieurwissenschaftlichen Nachwuchs mit modernen Lehr- und Lernmethoden ausbildet und den Technologietransfer sowie die Gründung von Unternehmen fördert.
description: The TUHH is a competitive, family-oriented and sustainable university with high performance and quality standards that strives for research excellence in basic research and its fields of competence. It is a internationally oriented university in the Hamburg metropolitan region, committed to the Humboldt ideal of education in the Hamburg metropolitan region. TUHH contributes to the development of the scientific competence of society by providing the next generation of engineers with modern teaching and with modern teaching and learning methods and by promoting the transfer of technology and promotes technology transfer and the establishment of companies.
Christoph Willms, Zwei Fundplätze der Michelsberger Kultur aus dem westlichen Münsterland, gleichzeitig ein Beitrag zum neolithischen Silexhandel in Mitteleuropa
Creators: name: Brandt, Karl Heinz
Publisher: name: Bonner Jahrbücher
Year: 2020

description: Rezension zu: Christoph Willms, Zwei Fundplätze der Michelsberger Kultur aus dem westlichen Münsterland, gleichzeitig ein Beitrag zum neolithischen Silexhandel in Mitteleuropa. Münstersche Beiträge zur Ur- und Frühgeschichte 12. Verlag August Lax, Hildesheim 1982. 159 Seiten, 27 Seiten mit 44 Abbildungen, 34 Tafeln.
description: Bonner Jahrbücher, Bd. 185.1985: Bonner Jahrbücher
Bioactivity assessment of additively manufactured doped-HA composite scaffolds for bone tissue engineering
Creators: name: Jindal, Swati
name: Serenelli, Cecile
name: Mancuso, Elena
Publisher: name: Transactions on Additive Manufacturing Meets Medicine
Year: 2021

description: Composites are promising candidates for treating bone defects, but manufacturing of composite scaffolds is challenging. This study aimed to fabricate composite scaffolds based on polycaprolactone (PCL) and doped Hydroxyapatite (HA) via a single step melt extrusion additive manufacturing technique. Starting from the raw powder forms, the printed scaffolds were produced and then characterized for morphology, mechanical behavior and in vitro mineralization. MicroCT revealed the homogenous dispersion of ceramic particles in the PCL matrix. Also, SEM showed the ceramic particles on the surfaces of printed scaffolds. Furthermore, bioactivity assays confirmed the enhanced apatite deposit formation on composite scaffolds compared to PCL alone.
description: Transactions on Additive Manufacturing Meets Medicine, Vol 3 No 1 (2021): Trans. AMMM
OPE coefficients and the mass-gap from the integrable scattering description of 2D CFT's
Creators: name: Bajnok, Zoltan
name: Janik, Romuald A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Many two-dimensional conformal field theories have an alternative integrable scattering description, which reproduces their spectrum of conformal weights. Taking as an example the case of the Lee-Yang nonunitary CFT and the 3-state Potts minimal model, we derive formulas, in terms of their integrable description, for the OPE coefficients of a certain specific primary operator and two identical but otherwise essentially arbitrary operators. As a side result we also obtain a novel formula for the mass-gap relation for the integrable massive deformation of the CFT. These results are obtained through expressing the first nontrivial coefficient in the UV expansion of the energy in terms of the integrable CFT data, i.e. the kink and anti-kink TBA solutions.
description: pdflatex, 27 pages, 2 figures
On a class of shift-invariant subspaces of the Drury-Arveson space
Creators: name: Arcozzi, Nicola
name: Levi, Matteo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32A37, 46E22, 47B35

description: In the Drury-Arveson space, we consider the subspace of functions whose Taylor coefficients are supported in the complement of a set $Y\subset\mathbb{N}^d$ with the property that $Y+e_j\subset Y$ for all $j=1,\dots,d$. This is an easy example of shift-invariant subspace, which can be considered as a RKHS in is own right, with a kernel that can be explicitely calculated. Moreover, every such a space can be seen as an intersection of kernels of Hankel operators, whose symbols can be explicity calcuated as well. Finally, this is the right space on which Drury's inequality can be optimally adapted to a sub-family of the commuting and contractive operators originally considered by Drury.
description: 10 pages, 1 figure
3D Printing of Biodegradable Poly(L-lactide)/Hydroxyapatite Composite by Composite Extrusion Modeling
Creators: name: Töllner, Philip
name: Brandes, William
name: Polley, Christian
name: Eichler, Benjamin
name: Seitz, Hermann
Publisher: name: Transactions on Additive Manufacturing Meets Medicine
Year: 2021

description: The usage of biodegradable polymers as implant material instead of metal is of growing interest because no second surgery is needed and the healing time is shortened. Combining biodegradable polymers with hydroxyapatite particles leads to implants with osteoconductive properties and improved mechanical strength. Using 3D printing it is possible to generate highly structured and complex or even individualized implants based on a patient data set. This work presents a preliminary study on the 3D printing of a commercially available biodegradable poly(L-lactide)/hydroxyapatite composite using the novel composite extrusion modeling (CEM) process. Optimized printing parameters have been investigated and first 3D printed specimens have been analyzed regarding their density and microstructure. Furthermore, first benchmark parts show the potential of manufacturing implants by CEM 3D printing using this composite material.
description: Transactions on Additive Manufacturing Meets Medicine, Vol 3 No 1 (2021): Trans. AMMM
Revisiting the Phase Structure of the Polyakov-quark-meson Model in the presence of Vacuum Fermion Fluctuation
Creators: name: Gupta, Uma Shankar
name: Tiwari, Vivek Kumar
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have considered the contribution of fermionic vacuum loop in the effective potential of Polyakov loop extended Quark Meson Model (PQM) for the two quark flavour case and explored the phase structure and thermodynamics of the resulting PQMVT model (Polyakov Quark Meson Model with Vacuum Term) in detail at non zero as well as zero chemical potential. The temperature variations of order parameters and their derivatives have been calculated and the phase diagram together with the location of critical end point (CEP) has been obtained in $μ$, and $T$ plane in both the models PQMVT and PQM. The PQMVT model analysis has been compared with the calculations in PQM model in order to bring out the effect of fermionic vacuum term on the physical observables. We notice that the critical end point (CEP) which is located near the temperature axis at ($μ=81.0$, $T = 167$ MeV) in the PQM model gets shifted close to the chemical potential axis at ($μ_{CEP}=294.7$, $T_{CEP}=84.0$ MeV) in the PQMVT model calculations of the phase diagram. Since it emerges from a background of second order transition in the chiral limit of massless quarks, the crossover occurring at $μ$ = 0 in PQMVT model for the realistic case of explicitly broken chiral symmetry, has been identified as quite a soft and smooth transition. We have presented and compared the results for temperature variations of thermodynamic observables at zero and different non-zero quark chemical potentials. It is noticed that the presence of fermionic vacuum term in the effective potential leads to a smoother and slower temperature variation of thermodynamic quantities.
description: 19 pages, 17 figures
A High-Resolution Atlas of Uranium-Neon in the H Band
Creators: name: Redman, Stephen L.
name: Ycas, Gabriel G.
name: Terrien, Ryan
name: Mahadevan, Suvrath
name: Ramsey, Lawrence W.
name: Bender, Chad F.
name: Osterman, Steven N.
name: Diddams, Scott A.
name: Quinlan, Franklyn
name: Lawler, James E.
name: Nave, Gillian
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a high-resolution (R ~ 50 000) atlas of a uranium-neon (U/Ne) hollow-cathode spectrum in the H-band (1454 nm to 1638 nm) for the calibration of near-infrared spectrographs. We obtained this U/Ne spectrum simultaneously with a laser-frequency comb spectrum, which we used to provide a first-order calibration to the U/Ne spectrum. We then calibrated the U/Ne spectrum using the recently-published uranium line list of Redman et al. (2011), which is derived from high-resolution Fourier transform spectrometer measurements. These two independent calibrations allowed us to easily identify emission lines in the hollow cathode lamp that do not correspond to known (classified) lines of either uranium or neon, and to compare the achievable precision of each source. Our frequency comb precision was limited by modal noise and detector effects, while the U/Ne precision was limited primarily by the signal-to-noise ratio (S/N) of the observed emission lines and our ability to model blended lines. The standard deviation in the dispersion solution residuals from the S/N-limited U/Ne hollow cathode lamp were 50% larger than the standard deviation of the dispersion solution residuals from the modal-noise-limited laser frequency comb. We advocate the use of U/Ne lamps for precision calibration of near-infrared spectrographs, and this H-band atlas makes these lamps significantly easier to use for wavelength calibration.
description: 23 pages, 7 figures, submitted and accepted in ApJSS. Online-only material to be published online by ApJSS
Additively manufactured nasopharyngeal swabs for the use in Covid-19 testing
Creators: name: Rybalcenko, Konstantin
name: Folgar, Luis
name: Ioannides, Giorgio
name: Salahshour, Mehdi
name: Heizer, Norbert
name: Crabtree, Joseph
Publisher: name: Transactions on Additive Manufacturing Meets Medicine
Year: 2021

description: A new methodology to manufacture mucosal membrane contact Covid-19 diagnostic items using powder-bed Additive Manufacturing (AM) and vapor smoothing methods was developed and introduced to fulfill the population testing demand. The technique can rapidly manufacture oral/respiratory diagnostic items at the point of use and at scale. Surface medical device tests were performed to evaluate biocompatibility of such Additively Manufactured Covid-19 diagnostic items. The presented results are the most in-depth medical study of vapor smoothed Additively Manufactured medical articles to date.
description: Transactions on Additive Manufacturing Meets Medicine, Vol 3 No 1 (2021): Trans. AMMM
Stress-energy Tensor Correlators in N-dim Hot Flat Spaces via the Generalized Zeta-Function Method
Creators: name: Cho, H. T.
name: Hu, B. L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We calculate the expectation values of the stress-energy bitensor defined at two different spacetime points $x, x'$ of a massless, minimally coupled scalar field with respect to a quantum state at finite temperature $T$ in a flat $N$-dimensional spacetime by means of the generalized zeta-function method. These correlators, also known as the noise kernels, give the fluctuations of energy and momentum density of a quantum field which are essential for the investigation of the physical effects of negative energy density in certain spacetimes or quantum states. They also act as the sources of the Einstein-Langevin equations in stochastic gravity which one can solve for the dynamics of metric fluctuations as in spacetime foams. In terms of constitutions these correlators are one rung above (in the sense of the correlation -- BBGKY or Schwinger-Dyson -- hierarchies) the mean (vacuum and thermal expectation) values of the stress-energy tensor which drive the semiclassical Einstein equation in semiclassical gravity. The low and the high temperature expansions of these correlators are also given here: At low temperatures, the leading order temperature dependence goes like $T^{N}$ while at high temperatures they have a $T^{2}$ dependence with the subleading terms exponentially suppressed by $e^{-T}$. We also discuss the singular behaviors of the correlators in the $x'\rightarrow x$ coincident limit as was done before for massless conformal quantum fields.
description: 23 pages, no figures. Invited contribution to a Special Issue of Journal of Physics A in honor of Prof. J. S. Dowker
Coherent storage of photoexcited triplet states using 29Si nuclear spins in silicon
Creators: name: Akhtar, Waseem
name: Filidou, Vasileia
name: Sekiguchi, Takeharu
name: Kawakami, Erika
name: Itahashi, Tatsumasa
name: Vlasenko, Leonid
name: Morton, John J. L.
name: Itoh, Kohei M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Pulsed electron paramagnetic resonance spectroscopy of the photoexcited, metastable triplet state of the oxygen-vacancy center in silicon reveals that the lifetime of the ms = \pm1 sub-levels differ significantly from that of the ms =0 state. We exploit this significant difference in decay rates to the ground singlet state to achieve nearly ~100% electron spin polarization within the triplet. We further demonstrate the transfer of a coherent state of the triplet electron spin to, and from, a hyperfine-coupled, nearest-neighbor 29Si nuclear spin. We measure the coherence time of the 29 Si nuclear spin employed in this operation and find it to be unaffected by the presence of the triplet electron spin and equal to the bulk value measured by nuclear magnetic resonance.
description: 5 pages, 4 figures
Napoleons second life
Creators: name: Gebhardt, Andreas
Publisher: name: Transactions on Additive Manufacturing Meets Medicine
Year: 2021

description: Within the last 30 years Additive Manufacturing (AM) became an important method for the treatment of craniofacial injuries. This is true for the direct application of AM made implants as well as for its indirect application via counter casting. Many successful cases have been published. But little is known about the long term behavior, especially if applied on big heavy loaded implants and older people. The report is a 10 years study about a 64 years old planter that suffered from a severe head injury. After several treatments he finally got an AM implant made from Titanium and recovered successfully.
description: Transactions on Additive Manufacturing Meets Medicine, Vol 3 No 1 (2021): Trans. AMMM
Educating biomedical 3D printing engineers
Creators: name: Thrysøe, Samuel
Publisher: name: Transactions on Additive Manufacturing Meets Medicine
Year: 2021

description: Medical 3D printing is improving clinical care in many hospitals worldwide. Biomedical engineers are often highlighted as a key player in creating accurate and functional 3D prints from medical images that satisfy the needs of the clinicians. This requires multi-disciplinary knowledge in many different fields, including anatomy, medical imaging modalities, segmentation, Computer Aided Design (CAD) and additive manufacturing know-how. Consequently, we have begun teaching the necessary prerequisites at Aarhus University in a course focused on gaining a practical understanding of the necessary skills and technologies. In this work we present our framework for educating skilled medical 3D printing engineers.
description: Transactions on Additive Manufacturing Meets Medicine, Vol 3 No 1 (2021): Trans. AMMM
The curious nonexistence of Gaussian 2-designs
Creators: name: Blume-Kohout, Robin
name: Turner, Peter S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: 2-designs -- ensembles of quantum pure states whose 2nd moments equal those of the uniform Haar ensemble -- are optimal solutions for several tasks in quantum information science, especially state and process tomography. We show that Gaussian states cannot form a 2-design for the continuous-variable (quantum optical) Hilbert space L2(R). This is surprising because the affine symplectic group HWSp (the natural symmetry group of Gaussian states) is irreducible on the symmetric subspace of two copies. In finite dimensional Hilbert spaces, irreducibility guarantees that HWSp-covariant ensembles (such as mutually unbiased bases in prime dimensions) are always 2-designs. This property is violated by continuous variables, for a subtle reason: the (well-defined) HWSp-invariant ensemble of Gaussian states does not have an average state because the averaging integral does not converge. In fact, no Gaussian ensemble is even close (in a precise sense) to being a 2-design. This surprising difference between discrete and continuous quantum mechanics has important implications for optical state and process tomography.
description: 9 pages, no pretty figures (sorry!)
Digital assistance for mobile 3D-printing of medical supplies
Creators: name: Vogt, Maximilian
name: Janzen, Kevin
name: Voßhenrich, Antje
name: Lakämper, Julia
name: Lau, Robert
Publisher: name: Transactions on Additive Manufacturing Meets Medicine
Year: 2021

description: In order to enable fast medical response in times of pandemics or other humanitarian crises, decentralized manufacturing networks based on additive manufacturing technologies are suitable for the demand-driven production of protective equipment and medical supplies. The use of mobile manufacturing units is intended to increase the resilience of isolated and overwhelmed hospitals in developing countries. In this paper, a digital assistance system for enabling untrained staff to handle the mobile manufacturing unit as well as operate and maintain 3D printers on site will be discussed.
description: Transactions on Additive Manufacturing Meets Medicine, Vol 3 No 1 (2021): Trans. AMMM
Magnetic properties of interacting, disordered electron systems in d=2 dimensions
Creators: name: Chakraborty, Prabuddha B.
name: Byczuk, Krzysztof
name: Vollhardt, Dieter
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We compute the magnetic susceptibilities of interacting electrons in the presence of disorder on a two-dimensional square lattice by means of quantum Monte Carlo simulations. Clear evidence is found that at sufficiently low temperatures disorder can lead to an enhancement of the ferromagnetic susceptibility. We show that it is not related to the transition from a metal to an Anderson insulator in two dimensions, but is a rather general low temperature property of interacting, disordered electronic systems.
description: 5 pages, 6 figures
A 3D printed patient specific artificial outer ear model for use in auricle reconstruction surgery: a clinical feasibility study
Creators: name: Matin, Farnaz
name: Gao, Ziwen
name: Bronzlik, Paul
name: Lenarz, Thomas
name: Scheper, Verena
Publisher: name: Transactions on Additive Manufacturing Meets Medicine
Year: 2021

description: Auricle reconstruction is a routine surgery in the field of Otolaryngology but the design of the reconstruction is based on the clinicians guess of the correct previous anatomy. Using additive manufacturing processes to build a model the surgeon can refer to may be a good substitute for conventional surgery. The quality of the framework replicating the three-dimensional architecture of the ear and precise sculpting of the anatomical structures are necessary in order to reach a desired outcome. In this work we present the workflow to produce an individualized 3D outer ear model for use in auricle reconstruction surgery and report on the clinical application of this model in a particular patient reconstruction surgery.
description: Transactions on Additive Manufacturing Meets Medicine, Vol 3 No 1 (2021): Trans. AMMM
Interconnection of Communities of Practice: A Web Platform for Knowledge Management
Creators: name: Garrot-Lavoué, Elise
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computers and Society (cs.CY)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Our works aim at developing a Web platform to connect various Communities of Practice (CoPs) and to capitalise on all their knowledge. This platform addresses CoPs interested in a same general activity, for example tutoring. For that purpose, we propose a general model of Interconnection of Communities of Practice (ICP), based on the concept of Constellation of Practice (CCP) developed by Wenger (1998). The model of ICP was implemented and has been used to develop the TE-Cap 2 platform which has, as its field of application, educational tutoring activities. In particular, we propose an indexation and search tool for the ICP knowledge base. The TE-Cap 2 platform has been used in real conditions. We present the main results of this descriptive investigation to validate this work.
Mirror symmetry for very affine hypersurfaces
Creators: name: Gammage, Benjamin
name: Shende, Vivek
Publisher: name: arXiv
Year: 2017
Subjects: subject: Symplectic Geometry (math.SG)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We show that the category of coherent sheaves on the toric boundary divisor of a smooth quasiprojective toric DM stack is equivalent to the wrapped Fukaya category of a hypersurface in a complex torus. Hypersurfaces with every Newton polytope can be obtained. Our proof has the following ingredients. Using recent results on localization, we may trade wrapped Fukaya categories for microlocal sheaf theory along the skeleton of the hypersurface. Using Mikhalkin-Viro patchworking, we identify the skeleton of the hypersurface with the boundary of the Fang-Liu-Treumann-Zaslow skeleton. By proving a new functoriality result for Bondal's coherent-constructible correspondence, we reduce the sheaf calculation to Kuwagaki's recent theorem on mirror symmetry for toric varieties.
description: 44 pages
Advanced training scenarios for liver surgery with realistic interactive 3D-printed phantoms
Creators: name: Nopper, Hans
name: Schendel, Olav
name: Karayagiz, Fatma
name: Freitas, Ubiratan
name: Lück, Thomas
name: Stadie, Tim
name: Lampe, Marie
name: Reinschluessel, Anke
name: Doering, Tanja
name: Salzmann, Daniela
name: Weyhe, Dirk
Publisher: name: Transactions on Additive Manufacturing Meets Medicine
Year: 2021

description: Realistic surgery phantoms possess the potential to improve medical training and as a result improve surgery outcomes, reduce operation time and minimize patient risks. In this work, we developed a training scenario within visceral surgery, implementing lifelike liver phantoms using a hybrid manufacturing approach combining collagen-based casting and 3D-printing. Being equipped with integrated sensors, we developed a feedback system to assess the performance of the trained procedure. This could lead to a new paradigm within visceral surgery training.
description: Transactions on Additive Manufacturing Meets Medicine, Vol 3 No 1 (2021): Trans. AMMM
COST EFFECTIVENESS OF INSULIN GLARGINE & ASPART REGIMEN VERSUS NPH & REGULAR INSULIN RÉGIME IN TYPE 1 DIABETIC PATIENTS OF PAKISTAN
Creators: name: Dr. ZAHID SHEHZAD SIDDIQUI
name: SABA MAJEED
name: SHAGUFTA SIKANDER
name: TAUSEEF AHMED
name: HIBA KANWAL MAJEED
Publisher: name: Zenodo
Year: 2024
Subjects: Type 1 Diabetic Mellitus, Clinical Safety, Efficacy, Insulin Glargine and ASPART, NPH & Regular Insulin.

description: Abstract

The present comparative analysis to evaluate the cost effectiveness of insulin GLARGINE & ASPART versus NPH & REGULAR insulin régime in type 1 diabetic patients of Pakistan. The present comparative study conducted at across multiple tertiary care hospitals in different regions of Pakistan. This study was employing a multicenter, prospective, randomized, open-label, parallel-group design to ensure a robust and comprehensive evaluation of the cost effectiveness, patient satisfaction, clinical safety and efficacy. A six-month study period was allowed for sufficient follow-up time. The study was employing a non-probability consecutive sampling technique for participant recruiting two groups, Group A (n=100) Insulin Glargine/Aspart Regimen and Group B: (n=100) NPH/Regular Insulin Regimen. Continuous variables, such as HbA1c levels, fasting blood glucose, lipid profiles, weight measurements, total monthly cost of different insulin regimen was summarized using descriptive statistics, including means and standard deviations. Results: There is no significant difference regarding glycemic control and lipid profile between two groups Insulin Glargine/Aspart and NPH/Regular Insulin. Baseline characteristics were similar across both groups, ensuring comparability. Significant improvements in glycemic control were observed in the Insulin Glargine/Aspart group, with HbA1c levels at 7.5 ± 1.1% compared to 8.2 ± 1.4% in the NPH/Regular Insulin group (p>0.05). FBS and PBS levels were also lower in the Insulin Glargine/Aspart group (p>0.05 and P p>0.05, respectively). There was no significant difference in daily insulin dosage (p<0.05). The annual cost of the Insulin Glargine/Aspart regimen (PKR 85,000) is significantly higher than the NPH/Regular Insulin regimen (PKR 55,000). This difference is statistically significant (p < 0.01). The Insulin Glargine/Aspart group experienced fewer side effects, particularly in terms of fatigue (p>0.05) and hypoglycemic episodes. The Insulin Glargine/Aspart regimen demonstrates superior clinical efficacy, better safety profile and somewhat costly compared to the NPH/Regular Insulin regimen in Type 1 diabetic patients in Pakistan. These findings support the preferential use of Insulin Glargine/Aspart for enhanced glycemic control and reduced adverse effects. The comparative analysis of Insulin Glargine/Aspart versus NPH/Regular Insulin regimens reveals that Insulin Glargine/Aspart provides significantly better glycemic control and fewer adverse effects in Type 1 diabetic patients in Pakistan. These results advocate for the adoption of Insulin Glargine/Aspart to improve treatment outcomes and patient safety in this population.
Two-way fixed effects estimators with heterogeneous treatment effects
Creators: name: de Chaisemartin, Clément
name: D'Haultfœuille, Xavier
Publisher: name: arXiv
Year: 2018
Subjects: subject: Econometrics (econ.EM)
subject: FOS: Economics and business

description: Linear regressions with period and group fixed effects are widely used to estimate treatment effects. We show that they estimate weighted sums of the average treatment effects (ATE) in each group and period, with weights that may be negative. Due to the negative weights, the linear regression coefficient may for instance be negative while all the ATEs are positive. We propose another estimator that solves this issue. In the two applications we revisit, it is significantly different from the linear regression estimator.
description: First version: March 2018. 71 pages (main paper until page 36, then supplement)
The abundance of C3H2 and other small hydrocarbons in the diffuse interstellar medium
Creators: name: Liszt, Harvey
name: Sonnentrucker, Paule
name: Cordiner, Martin
name: Gerin, Maryvonne
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Hydrocarbons are ubiquitous in the interstellar medium, observed in diverse environments ranging from diffuse to molecular dark clouds and strong photon-dominated regions near HII regions. Recently, two broad diffuse interstellar bands (DIBs) at 4881Å and 5450Å were attributed to the linear version of propynylidene l-C3H2, a species whose more stable cyclic conformer c-C3H2 has been widely observed in the diffuse interstellar medium at radio wavelengths. This attribution has already been criticized on the basis of indirect plausibility arguments because the required column densities are quite large, N(l-C3H2)/EB-V = 4 \times 1014 cm-2 mag-1. Here we present new measurements of N(l-C3H2) based on simultaneous 18-21 GHz VLA absorption profiles of cyclic and linear C3H2 taken along sightlines toward extragalactic radiocontinuum background sources with foreground Galactic reddening EB-V = 0.1 - 1.6 mag. We find that N(l-C3H2)/N(c-C3H2) ? 1/15 - 1/40 and N(l-C3H2)/EB-V ? 2 \pm 1 \times 1011 cm-2 mag-1, so that the column densities of l-C3H2 needed to explain the diffuse interstellar bands are some three orders of magnitude higher than what is observed. We also find N(C4H)/EB-V < 1.3 \times 1013 cm-2 mag-1 and N(C4H-)/EB-V < 1 \times 1011 cm-2 mag-1 (3?). Using available data for CH and C2H we compare the abundances of small hydrocarbons in diffuse and dark clouds as a guide to their ability to contribute as DIB carriers over a wide range of conditions in the interstellar medium.
description: Accepted for ApJ Letters
Large orbits on Markoff-type K3 surfaces over finite fields
Creators: name: O'Dorney, Evan M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 11G25, 14J27, 14J28

description: We study the surface $\mathcal{W}_k : x^2 + y^2 + z^2 + x^2 y^2 z^2 = k x y z$ in $(\mathbb{P}^1)^3$, a tri-involutive K3 (TIK3) surface. We explain a phenomenon noticed by Fuchs, Litman, Silverman, and Tran: over a finite field of order $\equiv 1$ mod $8$, the points of $\mathcal{W}_4$ do not form a single large orbit under the group $Γ$ generated by the three involutions fixing two variables and a few other obvious symmetries, but rather admit a partition into two $Γ$-invariant subsets of roughly equal size. The phenomenon is traced to an explicit double cover of the surface.
description: 4 pages. Accepted at IMRN
Is the post-AGB star SAO 40039 mildly H-deficient?
Creators: name: Rao, S. Sumangala
name: Pandey, Gajendra
name: Lambert, David L.
name: Giridhar, Sunetra
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have conducted an LTE abundance analysis for SAO 40039 a warm post-AGB star whose spectrum is known to show surprisingly strong He I lines for its effective temperature and has been suspected of being H-deficient and He-rich. High-resolution optical spectra are analyzed using a family of model atmospheres with different He/H ratios. Atmospheric parameters are estimated from the ionization equilibrium set by neutral and singly ionized species of Fe and Mg, the excitation of Fe I and Fe II lines and the wings of the Paschen lines. On the assumption that the He I lines are of photospheric and not chromospheric in origin, a He/H ratio of approximately unity is found by imposing the condition that the adopted He/H ratio of the model atmosphere must equal the ratio derived from the observed He I triplet lines at 5876, 4471 and 4713 Angstrom, and singlet lines at 4922 and 5015 Angstrom. Using the model with the best-fitting atmospheric parameters for this He/H ratio, SAO 40039 is confirmed to exhibit mild dust-gas depletion, i.e., the star has an atmosphere deficient in elements of high condensation temperature. The star appears to be moderately metal-deficient with [Fe/H]=-0.4 dex. But the star's intrinsic metallicty as estimated from Na, S and Zn, elements of a low condensation temperature, is [Fe/H]_o {[Fe/H]_o refers to the star's intrinsic metallicity} ~ -0.2. The star is enriched in N and perhaps O too, changes reflecting the star's AGB past and the event that led to He enrichment.
description: 15 Pages, 3 Figures, 2 Tables, Accepted for publication in the Astrophysical Journal Letters
Superfluid properties of a honeycomb dipolar supersolid
Creators: name: Gallemí, Albert
name: Santos, Luis
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Recent breakthrough experiments on dipolar condensates have reported the creation of supersolids, including two-dimensional arrays of quantum droplets. Droplet arrays are, however, not the only possible non-trivial density arrangement resulting from the interplay of mean-field instability and quantum stabilization. Several other possible density patterns may occur in trapped condensates at higher densities, including the so-called honeycomb supersolid, a phase that exists, as it is also the case of a triangular droplet supersolid, in the thermodynamic limit. We show that compared to droplet supersolids, honeycomb supersolids have a much-enhanced superfluid fraction while keeping a large density contrast, and constitute in this sense a much better dipolar supersolid. However, in contrast to droplet supersolids, quantized vortices cannot be created in a honeycomb supersolid without driving a transition into a so-called labyrinthic phase. We show that the reduced moment of inertia, and with it the superfluid fraction, can be however reliably probed by studying the dynamics following a scissors-like perturbation.
Avalanche Interpretation of the Power-Law Energy Spectrum in Three-Dimensional Dense Granular Flow
Creators: name: Oyama, Norihiro
name: Mizuno, Hideyuki
name: Saitoh, Kuniyasu
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Turbulence is ubiquitous in nonequilibrium systems, and it has been noted that even dense granular flows exhibit characteristics that are typical of turbulent flow, such as the power-law energy spectrum. However, studies on the turbulent-like behavior of granular flows are limited to two-dimensional (2D) flow. We demonstrate that the statistics in three-dimensional (3D) flow are qualitatively different from those in 2D flow. We also elucidate that avalanche dynamics can explain this dimensionality dependence. Moreover, we define clusters of collectively moving particles that are equivalent to vortex filaments. The clusters unveil complicated structures in 3D flows that are absent in 2D flows.
description: 6+6 pages, 4+3 figures
Tilting Uranus via the migration of an ancient satellite
Creators: name: Saillenfest, Melaine
name: Rogoszinski, Zeeve
name: Lari, Giacomo
name: Baillié, Kevin
name: Boué, Gwenaël
name: Crida, Aurélien
name: Lainey, Valéry
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Context. The 98°-obliquity of Uranus is commonly attributed to giant impacts that occurred at the end of the planetary formation. This picture, however, is not devoid of weaknesses. Aims. On a billion-year timescale, the tidal migration of the satellites of Jupiter and Saturn has been shown to strongly affect their spin-axis dynamics. We aim to revisit the scenario of tilting Uranus in light of this mechanism. Methods. We analyse the precession spectrum of Uranus and identify the candidate secular spin-orbit resonances that could be responsible for the tilting. We determine the properties of the hypothetical ancient satellite required for a capture and explore the dynamics numerically. Results. If it migrates over 10 Uranus' radii, a single satellite with minimum mass 4e-4 Uranus' mass is able to tilt Uranus from a small obliquity and make it converge towards 90°. In order to achieve the tilting in less than the age of the Solar System, the mean drift rate of the satellite must be comparable to the Moon's current orbital expansion. Under these conditions, simulations show that Uranus is readily tilted over 80°. Beyond this point, the satellite is strongly destabilised and triggers a phase of chaotic motion for the planet's spin axis. The chaotic phase ends when the satellite collides into the planet, ultimately freezing the planet's obliquity in either a prograde, or plainly retrograde state (as Uranus today). Spin states resembling that of Uranus can be obtained with probabilities as large as 80%, but a bigger satellite is favoured, with mass 1.7e-3 Uranus' mass or more. Yet, a smaller ancient satellite is not categorically ruled out, and there is room for improving this basic scenario in future studies. Interactions among several pre-existing satellites is a promising possibility.
description: Accepted for publication in Astronomy and Astrophysics
Effect of disintegrants and tablet infill on release behaviour of 3D printed tablets
Creators: name: Müller, Laura
name: Krause, Julius
name: Weitschies, Werner
Publisher: name: Transactions on Additive Manufacturing Meets Medicine
Year: 2021

description: The polymer hypromellose (HPMC) is widely used for 3D printing of pharmaceutical dosage forms. This paper deals with the study of acceleration of drug release from 3D printed HPMC tablets. Polyvinylpyrrolidone (PVP) was added and the infill of the tablets was also varied. Both, lower infill and addition of PVP, can accelerate the drug release of caffeine from 3D printed HPMC tablets.
description: Transactions on Additive Manufacturing Meets Medicine, Vol 3 No 1 (2021): Trans. AMMM
Efficient Numerical Methods for Gas Network Modeling and Simulation
Creators: name: Qiu, Yue
name: Grundel, Sara
name: Stoll, Martin
name: Benner, Peter
Publisher: name: arXiv
Year: 2018
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We study the modeling and simulation of gas pipeline networks, with a focus on fast numerical methods for the simulation of transient dynamics. The obtained mathematical model of the underlying network is represented by a nonlinear differential algebraic equation (DAE). With our modeling, we reduce the number of algebraic constraints, which correspond to the $(2,2)$ block in our semi-explicit DAE model, to the order of junction nodes in the network, where a junction node couples at least three pipelines. We can furthermore ensure that the $(1, 1)$ block of all system matrices including the Jacobian is block lower triangular by using a specific ordering of the pipes of the network. We then exploit this structure to propose an efficient preconditioner for the fast simulation of the network. We test our numerical methods on benchmark problems of (well-)known gas networks and the numerical results show the efficiency of our methods.
description: 26 pages, 22 figures
Non-linear dielectric effect in the isotropic phase above the isotropic-cholesteric phase transition
Creators: name: Mukherjee, Prabir. K.
name: Chakraborty, Sumanta
name: Rzoska, Sylwester J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Using the Landau-de Gennes theory, the temperature, pressure and frequency dependence of the non-linear effect in the isotropic phase above the isotropic-cholesteric phase transition is calculated. The influence of pressure on the isotropic-cholesteric phase transition is discussed by varying the coupling between the orientational order parameter and the macroscopic polarization of polar cholesterics. Comparing the results of the calculations with existing data, we finally conclude that the model provides a description of the isotropic-cholesteric transition that takes all experimentally known features of the unusual negative and positive pretransitional effect in the isotropic phase of the system into account in a qualitatively correct way.
Design and construction of a flexible pharyngeal phantom
Creators: name: Ibbeken, Alina
name: Hagen, Christina
name: Zell, Fenja
name: Steffen, Armin
name: Grzyska, Ulrike
name: Frydrychowicz, Alex
name: Buzug, Thorsten M.
Publisher: name: Transactions on Additive Manufacturing Meets Medicine
Year: 2021

description: Obstructive sleep apnea (OSA) is a common sleep disorder characterized by episodes of partial or complete obstruction of the upper airway during sleep. In order to experimentally examine the causes that lead to OSA, a flexible pharyngeal phantom of the upper airway geometry of an OSA patient was fabricated using additive manufacturing and silicone casting techniques. The result of each manufacturing step was recorded and examined with a control CT scan, the deviation of the phantom from the digital model was measured and evaluated.
description: Transactions on Additive Manufacturing Meets Medicine, Vol 3 No 1 (2021): Trans. AMMM
Indirectly additive manufactured deformable bladder model for a pelvic radiotherapy phantom
Creators: name: Wegner, Marie
name: Gargioni, Elisabetta
name: Krause, Dieter
Publisher: name: Transactions on Additive Manufacturing Meets Medicine
Year: 2021

description: The increasing variance in imaging radiotherapy demands the use of deformable phantoms for validation or quality assurance as well as for general training. This paper describes the development and manufacturing of a deformable urinary bladder model that can be implemented in a radiotherapy pelvic phantom. The advantages of additive manufacturing (AM) are used to produce an anatomically realistic mold, as well as a dissolvable core. The casted silicon bladder has different wall thicknesses which show realistic deformation behavior compared to a human bladder.
description: Transactions on Additive Manufacturing Meets Medicine, Vol 3 No 1 (2021): Trans. AMMM
Design of finger joint implants based on triply periodic minimal surfaces
Creators: name: Löw, Yannick Marian
name: Seibel, Arthur
Publisher: name: Transactions on Additive Manufacturing Meets Medicine
Year: 2021

description: Due to the high demands placed on finger joint implants, the most common therapy for joint diseases is still the use of silicone spacers or even joint stiffening. For this reason, the Fraunhofer PREPARE project FingerKIt has set itself the goal of developing a new form of therapy in which patient-specific implants are automatically generated that meet the high requirements placed on them. First steps toward achieving this goal are presented in this paper.
description: Transactions on Additive Manufacturing Meets Medicine, Vol 3 No 1 (2021): Trans. AMMM
The modulus of the Korányi ellipsoidal ring
Creators: name: Gou, Gaoshun
name: Platis, I. D.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 30L10, 30C75

description: The Korányi ellipsoidal ring $\mathcal{E}$ of radii $B$ and $A$, $0
description: 10 pages
Fingerprints of carbon defects in vibrational spectra of gallium nitride (GaN) consider-ing the isotope effect
Creators: name: Gamov, I.
name: Lyons, J. L.
name: Gärtner, G.
name: Irmscher, K.
name: Richter, E.
name: Weyers, M.
name: Wagner, M. R.
name: Bickermann, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: This work examines the carbon defects associated with recently reported and novel peaks of infrared (IR) absorption and Raman scattering appearing in GaN crystals at carbon ($^{12}C$) doping in the range of concentrations from $3.2*10^{17}$ to $3.5*10^{19} cm^{-3}$. 14 unique vibrational modes of defects are observed in GaN samples grown by hydride vapor phase epitaxy (HVPE) and then compared with defect properties predicted from first-principles calculations. The vibrational frequency shift in two $^{13}C$ enriched samples related to the effect of the isotope mass indicates six distinct configurations of the carbon-containing point defects. The effect of the isotope replacement is well reproduced by the density functional theory (DFT) calculations. Specific attention is paid to the most pronounced defects, namely tri-carbon complexes($C_N=C=C_N$) and carbon substituting for nitrogen $C_N$. The position of the transition level (+/0) in the bandgap found for $C_N=C=C_N$ defects by DFT at 1.1 eV above the valence band maximum, suggest that $(C_N=C=C_N)^+$ provides compensation of ${C_N}^-$. $C_N=C=C_N$ defects are observed to be prominent, yet have high formation energies in DFT calculations. Regarding ${C_N}$ defects, it is shown that the host Ga and N atoms are involved in the defect's delocalized vibrations and significantly affect the isotopic frequency shift. Much more faint vibrational modes are found from di-atomic carbon-carbon and carbon-hydrogen (C-H) complexes. Also, we note changes of vibrational mode intensities of $C_N$, $C_N=C=C_N$, C-H, and $C_N-C_i$ defects in the IR absorption spectra upon irradiation in the defect-related UV/visible absorption range. Finally, it is demonstrated that the resonant enhancement of the Raman process in the range of defect absorption above 2.5 eV enables the detection of defects at carbon doping concentrations as low as $3.2*10^{17} cm^{-3}$.
Some Remarks on the Dirichlet Problem on Infinite Trees
Creators: name: Chalmoukis, Nikolaos
name: Levi, Matteo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We consider the Dirichlet problem on infinite and locally finite rooted trees, and we prove that the set of irregular points for continuous data has zero capacity. We also give some uniqueness results for solutions in Sobolev $ W^{1,p} $ of the tree.
description: 14 pages, 1 figure