cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Structural (dis)order and dynamic propensity in a mildly undercooled glass-forming liquid: Spatial correlations and the role of crystalline environments
Creators: name: Razul, M Shajahan G
name: Matharoo, Gurpreet S
name: Viswanathan, Balakrishnan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We use the isoconfigurational (IC) ensemble to show the connection between emerging heterogeneities in the tetrahedral order parameter and the dynamic propensity in a mildly undercooled glass-forming liquid. We observe that spatially correlated tetrahedrally-(dis)ordered clusters of molecules are observable on the time scale of structural relaxation. The heterogeneities of tetrahedrally-(dis)ordered clusters correlate with dynamical heterogeneities (DH) and these correlations reach peaks at similar time scales. We discover that the angular component of the tetrahedral order parameter is strongly correlated to the dynamics compared to the radial component. Moreover, these correlations between the dynamics and tetrahedrally-(dis)ordered regions enormously influence the system, with spatial correlations being observable for a prolonged period beyond the peaks of maximum DH. Further, we discover that the crystalline particle environments in our water model (as identified by the IC ensemble) may be the origin for slow dynamics of dynamical heterogeneity in our undercooled model water system.
description: 27 Pages, 7 Figures. Physica A (2021)
Modeling beta Virginis using seismological data
Creators: name: Eggenberger, P.
name: Carrier, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This paper presents the modeling of the F9 V star beta Virginis based on seismological measurements. Using the Geneva evolution code including rotation and atomic diffusion, we find that two distinct solutions reproduce all existing asteroseismic and non-asteroseismic observational constraints well: a main-sequence model with a mass of 1.28 +- 0.03 Msun and an age t = 3.24 +- 0.20 Gyr, or a model in the post-main sequence phase of evolution with a lower mass of 1.21 +- 0.02 Msun and an age t = 4.01 +- 0.30 Gyr. The small spacings and the ratio between small and large spacings are sensitive to the differences in the structure of the central layers between these two solutions and are also sensitive to the structural changes due to the rotational mixing. They can therefore be used to unambiguously determine the evolutionary state of beta Vir and to study the effects of rotation on the inner structure of the star. Unfortunately, existing asteroseismic data do not enable such precise determination. We also show that the scatter in frequencies introduced by the rotational splittings can account for the larger dispersion of the observed large spacings for the non-radial modes than for the radial modes.
description: 11 pages, 12 figures, accepted for publication in A&A
A closer look at time averages of the logistic map at the edge of chaos
Creators: name: Tirnakli, Ugur
name: Tsallis, Constantino
name: Beck, Christian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The probability distribution of sums of iterates of the logistic map at the edge of chaos has been recently shown [see U. Tirnakli, C. Beck and C. Tsallis, Phys. Rev. E 75, 040106(R) (2007)] to be numerically consistent with a q-Gaussian, the distribution which, under appropriate constraints, maximizes the nonadditive entropy S_q, the basis of nonextensive statistical mechanics. This analysis was based on a study of the tails of the distribution. We now check the entire distribution, in particular its central part. This is important in view of a recent q-generalization of the Central Limit Theorem, which states that for certain classes of strongly correlated random variables the rescaled sum approaches a q-Gaussian limit distribution. We numerically investigate for the logistic map with a parameter in a small vicinity of the critical point under which conditions there is convergence to a q-Gaussian both in the central region and in the tail region, and find a scaling law involving the Feigenbaum constant delta. Our results are consistent with a large number of already available analytical and numerical evidences that the edge of chaos is well described in terms of the entropy S_q and its associated concepts.
description: 9 pages, 5 figs
N-acetil-cisteina regola l'attività trascrizionale delle Metalloproteinasi di matrice-2 e -9, in fibroblasti pulpari umani stimolati con le resine monomeriche TEGDMA ed HEMA
Creators: name: Procino, Alfredo
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: Negli ultimi 30 anni, l'odontoiatria conservativa è stata caratterizzata da una rivoluzione innescata dall'introduzione di materiali da otturazione estetici, che ha determinato un significativo cambiamento delle tecniche per rispondere a esigenze e richieste dei pazienti. In particolare i nuovi approcci terapeutici sono stati resi possibili con l'introduzione e lo sviluppo di nuovi materiali a base resinosa (resin-based dental materials / RBDM ) che hanno introdotto il concetto di adesione alle strutture dentarie.
Evoking Places from Spaces. The application of multimodal narrative techniques in the creation of "U Modified"
Creators: name: Young, Gareth W.
name: Mannion, Siobhán
name: Wentworth, Sara
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Multimodal diegetic narrative tools, as applied in multimedia arts practices, possess the ability to cross the spaces that exist between the physical world and the imaginary. Within this paper we present the findings of a multidiscipline practice based research project that explored the potential of an audiovisual art performance to purposefully interact with an audience's perception of narrative place. To achieve this goal, research was undertaken to investigate the function of multimodal diegetic practices as applied in the context of a sonic art narrative. This project direction was undertaken to facilitate the transformation of previous experiences of place through the creative amalgamation and presentation of collected audio and visual footage from real world spaces. Through the presentation of multimedia relating to familiar geographical spatial features, the audience were affected to evoke memories of place and to construct and manipulate their own narrative.
description: 5 pages
Deep Learning Approach for Matrix Completion Using Manifold Learning
Creators: name: Mehrdad, Saeid
name: Kahaei, Mohammad Hossein
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Matrix completion has received vast amount of attention and research due to its wide applications in various study fields. Existing methods of matrix completion consider only nonlinear (or linear) relations among entries in a data matrix and ignore linear (or nonlinear) relationships latent. This paper introduces a new latent variables model for data matrix which is a combination of linear and nonlinear models and designs a novel deep-neural-network-based matrix completion algorithm to address both linear and nonlinear relations among entries of data matrix. The proposed method consists of two branches. The first branch learns the latent representations of columns and reconstructs the columns of the partially observed matrix through a series of hidden neural network layers. The second branch does the same for the rows. In addition, based on multi-task learning principles, we enforce these two branches work together and introduce a new regularization technique to reduce over-fitting. More specifically, the missing entries of data are recovered as a main task and manifold learning is performed as an auxiliary task. The auxiliary task constrains the weights of the network so it can be considered as a regularizer, improving the main task and reducing over-fitting. Experimental results obtained on the synthetic data and several real-world data verify the effectiveness of the proposed method compared with state-of-the-art matrix completion methods.
title: Remote Detection of Leaks in High Level Waste Storage Tanks
Creators: name: Frey, Hunter
Publisher: name: University of Nevada, Las Vegas
publisherIdentifier: https://ror.org/0406gha72
publisherIdentifierScheme: ROR
Year: 2024

description: The purpose of this research was to characterize three devices potentially capable of  remotely detecting signatures of a leak from high-level waste (HLW) storage tanks, specifically  ones found at the Savannah River Site and the Hanford Site. The hazard HLW found within these tanks include 137Cs, a gamma-ray emitter, and 90Sr, an electron emitter leading to heat generation. These pose health risks to the personnel and maintenance problems and environmental safety issues if released to the environment. Additionally, pinpointing the location of a leak is a task that could lead to the mitigation of excess waste leaking from the tank. There were three objectives of this work, each associated with its respective leak detection device. The first objective was to validate a Kromek CZT gamma spectrometer by measuring sealed 137Cs sources with various activity levels. The second objective was to use a FLIR Duo-R thermal camera to image heated metal objects of varying shapes to highlight how a hotspot stands out against a cooler background in thermal imaging. The third and final objective was using a Roga Instruments iSV1611 USB ultrasonic microphone to measure high frequency noises that would be associated with pressurized gas or a liquid leaking from a crack in a tank. Testing each device set a benchmark for accuracy that can be scaled to larger scale experiments and field work. The experiments completed with these devices provided accurate data used to characterize them to be used in the field. The gamma spectrometer data was compared to known data of 137Cs emissions, and the microphone measured known frequency emissions with extreme accuracy. The thermal camera provided the data numerically, but visually provided great indication of the desired hotspots. The data acquired allowed for a conclusion to be made on the accuracy of these devices to be used to detect a leak in a HLW tank. Future work considered would be large scale experiments and field applications.
Model-Based Verification Of Operating Systems Device Drivers
Creators: name: Fucci, Francesco
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: Critical systems depend on software more than ever. In particular, off-the-shelf operating systems (OS) have a central role in the development of critical systems. Unfortunately, OS are plagued by software defects that threaten their reliability, since verification techniques are still not enough cost-efficient to prevent such defects. In particular, empirical studies found that defective device drivers are the major cause of failures of operating systems. Therefore, more sophisticated techniques are needed in order to make the verification of device drivers more cost-efficient.
This thesis addresses this problem by proposing three solutions for detecting software defects in device drivers. The thesis first proposes a methodology that enhances symbolic execution with model-based verification. The idea is that the developer provides a model of expected interactions between the device driver, the operating system and the device, based on documentation and domain expertise about the OS and the device. We propose a language (SLANG) and a run-time support (SymCheck) to ease the developer in specifying behavioral models and checking them through symbolic execution.
The second contribution of this thesis is an enhanced platform for improving the speed of symbolic execution. This platform is based on an efficient representation of intermediate code, which can achieve an average speed-up of 3x compared to a state-of-the-art symbolic execution platform.
Finally, this thesis provides an approach for run-time verification of the behavior of device driver. The idea is that device drivers behave correctly in most cases, and that anomalies in their behavior are symptomatic of failures. Therefore, the approach uses failure-free execution traces of the device driver, to extract a model of the expected behavior. Then, this model is used to generate a device driver monitor, which inspects the state of the device driver in order to detect divergences between the expected behavior and the actual one. The proposed approaches have been applied on device drivers from the Windows and Linux OS, showing their applicability and usefulness on real-world off-the-shelf OS.
Effect of the pseudogap on the uniform magnetic susceptibility of Y1-xCaxBa2Cu3O7-d
Creators: name: Naqib, S. H.
name: Cooper, J. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The effects of planar hole content, p, on the temperature-dependent uniform (q = 0) magnetic susceptibility, c(T), of polycrystalline Y1-xCaxBa2Cu3O7-d compounds with 0.0 = x = 0.20 were investigated over a wide range of oxygen deficiency (d). Systematic variations in c(T) were found with changing p. The characteristic pseudogap temperature scale, Eg(p)/kB, was extracted from the analysis of the c(T,p) data. We have found clear evidence that the pseudogap in the quasi-particle spectral weight appears abruptly at a planar hole content of p ~ 0.19, and that it grows rapidly with decreasing p.
description: Submitted to Physica C (M2S-HTSC 2006 Proceedings)
The End of Galaxy Surveys
Creators: name: Rhodes, Jason
name: Huff, Eric
name: Masters, Daniel
name: Nierenberg, Anna
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: For nearly a century, imaging and spectroscopic surveys of galaxies have given us information about the contents of the universe. We attempt to define the logical endpoint of such surveys by defining not the next galaxy survey, but the final galaxy survey at NIR wavelengths; this would be the galaxy survey that exhausts the information content useful for addressing extant questions. Such a survey would require incredible advances in a number of technologies and the survey details will depend on the as yet poorly constrained properties of the earliest galaxies. Using an exposure time calculator, we define nominal surveys for extracting the useful information for three science cases: dark energy cosmology, galaxy evolution, and supernovae. We define scaling relations that trade off sky background, telescope aperture, and focal plane size to allow for a survey of a given depth over a given area. For optimistic assumptions, a 280m telescope with a marginally resolved focal plane of 20 deg$^2$ operating at L2 could potentially exhaust the cosmological information content of galaxies in a 10 year survey. For galaxy evolution (making use of gravitational lensing to magnify the earliest galaxies) and SN, the same telescope would suffice. We discuss the technological advances needed to complete the last galaxy survey. While the final galaxy survey remains well outside of our technical reach today, we present scaling relations that show how we can progress toward the goal of exhausting the information content encoded in the shapes, positions, and colors of galaxies.
description: 16 pages, 3 figures, to appear in AJ
Three-dimensional black holes via Noether symmetries
Creators: name: Camci, Ugur
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the Noether symmetries of the Lagrangian for the stationary rotating BTZ-type three-dimensional spacetimes in $f(R)$ theory of gravity. A detailed analysis of Noether symmetries of (2+1)-dimensional rotating BTZ-type black hole spacetime model is presented. Applying the Noether symmetry approach, the first integrals (constants of motion) for each of Noether symmetries are obtained to look for the exact solutions. After solving the first integral equations depending on the form of the function $f(R)$, we derived some new (2+1)-dimensional rotating BTZ-type black hole solutions. We discussed the physical implications of the derived exact solutions. The thermodynamical properties of the obtained BTZ-type black hole solutions are analyzed by making use of the mass $M$ and the angular momentum $J$ in terms of $r_{\pm}$, where $r_+$ is the event horizon and $r_{-}$ is the inner horizon. Further, it is shown that thermodynamic quantities obey the first law, and the Smarr-like formulas of the solutions we found are obtained.
description: 29 pages, 1 table, no figures, to appear in Physical Review D
A multiple accounts approach for analyzing the effectiveness of NOx emissions controls in the GVRD airshed
Creators: name: Smailes, Robert L.
Publisher: name: University of British Columbia
Year: 2009

description: This thesis presents an analysis of air quality control initiatives in the GVRD. Starting with an examination of deteriorating regional air quality, oxides of nitrogen emissions (NOx), are the focus (as a precursor to ground level ozone.) The research demonstrates that if the status quo is maintained, episodes of ground level ozone will get worse and the effects will be far reaching and expensive. The Greater Vancouver Regional District's Air Quality Management Plan is reviewed, with emphasis on analysis and evaluation of emission reduction strategies. Emission Reduction Measures (ERMs) are various methods of reducing air pollution (including scrubbers on smoke stacks, transportation demand management, alternative fuels and motor vehicle inspection/maintenance programs.) Emission Reduction Measures are viewed as the tools that must be implemented to solve air quality problems. Environmentally, the most desirable solution would be to implement all ERMs. However, factors such as cost effectiveness and social, financial, political and customer service impacts must be considered and the best measures should be implemented first. The best solutions are those that meet as many objectives as possible while causing the least amount of negative impacts on the economy, society, government and the environment. Finding optimal solutions is a task that requires formalization of common sense. Analytical frameworks such as the cost/benefit analysis, decision analysis and the multiple account/objective analysis are considered as potential tools to help "make sense" of the complexity of air quality policy decisions. The intent is to provide useful and readily understandable information to decision makers. The Multiple Account Analysis (as used by The Crown Corporations Secretariat) is applied to an assortment of Emission Reduction Measures to help identify the "best" order for implementation. This method provides results that compare accounts of importance (such as cost effectiveness and emission reduction potential) and presents decision makers with quality information highlighting tradeoffs and preferences. In the scope of this paper, four ERMs are analyzed across accounts and the results presented in a matrix. The AirCare Program appears as the best choice for effective reduction of oxides of nitrogen when compared to alternative fuels, vanpooling and the Burrard thermal generating plant rebuild.
title: Barriers to a Real Second Chance: Seeking Redemption While Set Up for Failure
Creators: name: Forrai, Kara
Publisher: name: University of Nevada, Las Vegas
publisherIdentifier: https://ror.org/0406gha72
publisherIdentifierScheme: ROR
Year: 2024

description: With the enactment of the Second Chance Act in 2008, there has been a need to better understand the effectiveness of prisoner reentry programs and the services that are provided within these programs. Since then, numerous articles have described the barriers that previously incarcerated persons encounter during reentry and how this increases the likelihood of recidivism. The goal of this current study is to understand what current barriers exist for individuals within a local reentry program and then to suggest future implementations that could reduce the impact of these barriers. To achieve this goal, qualitative research methods are employed to understand the experiences of 24 clients within a local reentry program. In this study, secondary interview data collected in 2022 is reexamined to extract themes that explore the barriers that reentry clients encounter when returning back to the community and to gain an understanding of what resources are needed for this specific population. These thematic findings overlap with the relevant literature and theoretical frameworks presented in this project, which demonstrates why services are inaccessible for this population and how stigmatization negatively impacts the reentry process for previously justice-involved individuals. Future implications explore how altering modern policies could limit the impact of reentry barriers and how conducting additional studies could provide more solutions for overcoming reentry barriers.
Development of a model based on oncolytic adenovirus  loaded with L-carnosine as a drug delivery system for cancer therapy
Creators: name: Garofalo, Mariangela
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2015

description: Oncolytic viruses are viruses that are able to replicate specifically and infect and destroy only tumor cells. Many clinical studies have shown that the oncolytic approach alone could not efficiently destroy the large tumor mass, thus by limiting an efficacy virotherapy. Combination of oncolytic adenoviruses (Ads) and chemotherapeutic drugs has shown promising therapeutic results due to the synergistic action of virus and drug and is considered as a potential approach for cancer therapy. In the present study, we have optimized a model to use oncolytic adenovirus as a scaffold to deliver active drugs. First, we have developed a strategy to conjugate peptides on viral capsid, based on electrostatic interactions. We have utilized the L-carnosine (β-Ala-His) dipeptide, according to our previous results. L-carnosine is a naturally occurring histidine dipeptide, with a number of biological functions, including a significant antiproliferative activity both in vitro and in vivo. L-carnosine positively charged, consisting of a tail of six lysines (Carnosine6K), has been combined with the surface of oncolytic adenovirus that is negatively charged, to allow the formation of a complex (Ad5D24CpG-Carnosine6K).
We have observed using different cancer cell lines that complex at 100vp, is able to reduce significantly cell proliferation and ATP production compared to an uncoated oncolytic adenovirus. Finally, the oncolytic activity of the complex was tested in a lung and colon cancer xenograft model. Nude mice bearing A549 and HCT-116 cell tumors in the flanks were treated intra-tumorally and each tumor was treated with 1x10^8 VP. The tumor growth was followed over time, our results show a reduction in tumor growth in mice treated with complex compared to the mice treated with virus alone or Carnosine6K.  Later, we have investigated the molecular mechanisms underlying the effects by oncolytic virus coated with modified L-carnosine on tumor growth reduction. Our results suggest that the oncolytic virus coated with modified L-carnosine induces apoptosis, increases autophagy (LC3), by improving the efficacy of Ad-mediated oncolysis. In conclusion, once validated the proposed model could be used as a novel drug delivery system for cancer therapy.
Entanglement production with multimode Bose-Einstein condensates in optical lattices
Creators: name: Yukalov, V. I.
name: Yukalova, E. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Deep optical lattices are considered, in each site of which there are many Bose-condensed atoms. By the resonant modulation of trapping potentials it is possible to transfer a macroscopic portion of atoms to the collective nonlinear states corresponding to topological coherent modes. Entanglement can be generated between these modes. By varying the resonant modulating field it is possible to effectively regulate entanglement production in this multimode multitrap system of Bose condensates.
description: Latex file, 16 pages, 7 figures
Optimization over Young Diagrams
Creators: name: Onn, Shmuel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Discrete Mathematics (cs.DM)
subject: Data Structures and Algorithms (cs.DS)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 05A, 15A, 51M, 52A, 52B, 52C, 62H, 68Q, 68R, 68U, 68W, 90B, 90C

description: We consider the problem of finding a Young diagram minimizing the sum of evaluations of a given pair of functions on the parts of the associated pair of conjugate partitions. While there are exponentially many diagrams, we show it is polynomial time solvable.
A Survey on the Special Function "Shin"
Creators: name: Ossicini, Andrea
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 33B10;33B15;26A48

description: The purpose of the work is to furnish a complete study of a discrete and special function, discovered by the author and named with the Arabian letter "SHIN" {The letter SHIN is the thirteenth letter of the Arabian alphabet}. It includes three other papers, published in the International journal "Kragujevac Journal of Mathematics". The methods, the techniques and the style of the demonstration inside such a work, are all related to Leonhard Euler, the very great Swiss mathematician.
description: 46 pages, 15 figures
Exact number conserving phase-space dynamics of the M-site Bose-Hubbard model
Creators: name: Trimborn, F.
name: Witthaut, D.
name: Korsch, H. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The dynamics of M-site, N-particle Bose-Hubbard systems is described in quantum phase space constructed in terms of generalized SU(M) coherent states. These states have a special significance for these systems as they describe fully condensed states. Based on the differential algebra developed by Gilmore, we derive an explicit evolution equation for the (generalized) Husimi-(Q)- and Glauber-Sudarshan-(P)-distributions. Most remarkably, these evolution equations turn out to be second order differential equations where the second order terms scale as 1/N with the particle number. For large N the evolution reduces to a (classical) Liouvillian dynamics. The phase space approach thus provides a distinguished instrument to explore the mean-field many-particle crossover. In addition, the thermodynamic Bloch equation is analyzed using similar techniques.
description: 11 pages, Revtex 4
The Excitation of N$_2$H$^+$ in Interstellar Molecular Clouds. I - Models
Creators: name: Daniel, F.
name: Cernicharo, J.
name: Dubernet, M. -L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present LVG and non-local radiative transfer calculations involving the rotational and hyperfine structure of the spectrum of N$_2$H$^+$ with collisional rate coefficients recently derived by us. The goal of this study is to check the validity of the assumptions made to treat the hyperfine structure and to study the physical mechanisms leading to the observed hyperfine anomalies. We find that the usual hypothesis of identical excitation temperatures for all hyperfine components of the $J$=1-0 transition is not correct within the range of densities existing in cold dense cores, i.e., a few 10$^4$ $\textless$ n(H$_2$) $\textless$ a few 10$^6$ cm$^{-3}$. This is due to different radiative trapping effects in the hyperfine components. Moreover, within this range of densities and considering the typical abundance of N$_2$H$^+$, the total opacity of rotational lines has to be derived taking into account the hyperfine structure. The error made when only considering the rotational energy structure can be as large as 100%. Using non-local models we find that, due to saturation, hyperfine anomalies appear as soon as the total opacity of the $J$=1-0 transition becomes larger than $\simeq$ 20. Radiative scattering in less dense regions enhance these anomalies, and particularly, induce a differential increase of the excitation temperatures of the hyperfine components. This process is more effective for the transitions with the highest opacities for which emerging intensities are also reduced by self-absorption effects. These effects are not as critical as in HCO$^+$ or HCN, but should be taken into account when interpreting the spatial extent of the N$_2$H$^+$ emission in dark clouds.
description: 13 pages, 12 figures
Two-dimensional adaptive membranes with programmable water and ionic channels
Creators: name: Andreeva, Daria V.
name: Trushin, Maxim
name: Nikitina, Anna
name: Costa, Mariana C. F.
name: Cherepanov, Pavel V.
name: Holwill, Matthew
name: Chen, Siyu
name: Yang, Kou
name: Chee, See Wee
name: Mirsaidov, Utkur
name: Neto, Antonio H. Castro
name: Novoselov, Kostya S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Membranes are ubiquitous in nature with primary functions that include adaptive filtering and selective transport of chemical and molecular species. Being critical to cellular functions, they are also fundamental in many areas of science and technology. Of particular importance are the adaptive and programmable membranes that can change their permeability or selectivity depending on the environment. Here, we explore implementation of such biological functions in artificial membranes and demonstrate two dimensional self assembled heterostructures of graphene oxide and polyamine macromolecules, forming a network of ionic channels that exhibit regulated permeability of water and monovalent ions. This permeability can be tuned by a change of pH or the presence of certain ions. Unlike traditional membranes, the regulation mechanism reported here relies on specific interactions between the membranes internal components and ions. This allows fabrication of membranes with programmable, predetermined permeability and selectivity, governed by the choice of components, their conformation and their charging state.
description: Nat. Nanotechnol. (2020)
Multipolar theory of black-body radiation shift of atomic energy levels and its implications for optical lattice clocks
Creators: name: Porsev, Sergey G.
name: Derevianko, Andrei
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A black-body radiation (BBR) shifts of (nsnp ^3P_0) - (ns^2 ^1S_0) clock transition in divalent atoms Mg, Ca, Sr, and Yb are evaluated. A theory of multipolar BBR shifts is developed and its implications are discussed. At room temperatures, the resulting uncertainties in the BBR shifts are relatively large and substantially affect the projected 10^{-18} fractional accuracy of the optical-lattice-based clocks.
description: 4 pages, 1 figure, submitted to Physical Review Letters
Structure and Problem Hardness: Goal Asymmetry and DPLL Proofs in
 SAT-Based Planning
Creators: name: Hoffmann, Joerg
name: Gomes, Carla
name: Selman, Bart
Publisher: name: arXiv
Year: 2007
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: I.2.8; I.2.3

description: In Verification and in (optimal) AI Planning, a successful method is to formulate the application as boolean satisfiability (SAT), and solve it with state-of-the-art DPLL-based procedures. There is a lack of understanding of why this works so well. Focussing on the Planning context, we identify a form of problem structure concerned with the symmetrical or asymmetrical nature of the cost of achieving the individual planning goals. We quantify this sort of structure with a simple numeric parameter called AsymRatio, ranging between 0 and 1. We run experiments in 10 benchmark domains from the International Planning Competitions since 2000; we show that AsymRatio is a good indicator of SAT solver performance in 8 of these domains. We then examine carefully crafted synthetic planning domains that allow control of the amount of structure, and that are clean enough for a rigorous analysis of the combinatorial search space. The domains are parameterized by size, and by the amount of structure. The CNFs we examine are unsatisfiable, encoding one planning step less than the length of the optimal plan. We prove upper and lower bounds on the size of the best possible DPLL refutations, under different settings of the amount of structure, as a function of size. We also identify the best possible sets of branching variables (backdoors). With minimum AsymRatio, we prove exponential lower bounds, and identify minimal backdoors of size linear in the number of variables. With maximum AsymRatio, we identify logarithmic DPLL refutations (and backdoors), showing a doubly exponential gap between the two structural extreme cases. The reasons for this behavior -- the proof arguments -- illuminate the prototypical patterns of structure causing the empirical behavior observed in the competition benchmarks.
ความหลากหลายทางพันธุกรรมของปลาช่อนสกุล Channa ในภาคตะวันออกเฉียงเหนือของประเทศไทยโดยใช้เทคนิค PCR-RFLP
Creators: name: มณีรัตน์ ศิริสวัสดิ์
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2558
Subjects: ปลาช่อน, ความหลากหลายทางพันธุกรรม, COI, Channa, PCR-RFLP

description: 4, 34, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
Scaling Phenomena in Gravity from QCD
Creators: name: Alvarez-Gaume, Luis
name: Gomez, Cesar
name: Vazquez-Mozo, Miguel A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present holographic arguments to predict properties of strongly coupled gravitational systems in terms of weakly coupled gauge theories. In particular we relate the latest computed value for the Choptuik critical exponent in black hole formation in five dimensions, γ_{5D}=0.412 \pm 1%, to the saturation exponent of four-dimensional Yang-Mills theory in the Regge limit, γ_{BFKL}\simeq 0.410.
description: 13 pages. To Pere Pascual, in memoriam. v2: minor changes. Typos corrected and references added. v3: conclusions expanded, references added. To appear in Physics Letters B
Quenching to fix metastable states in models of prebiotic chemistry
Creators: name: Sheng, Qianyi
name: Intoy, Ben
name: Halley, J. W.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Molecular Networks (q-bio.MN)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: For prebiotic chemistry to succeed in producing a starting metastable, autocatalytic and reproducing system subject to evolutionary selection it must satisfy at least two apparently contradictory requirements: Because such systems are rare, a search among vast numbers of molecular combinations must take place naturally, requiring rapid rearrangement and breaking of covalent bonds. But once a relevant system is found, such rapid disruption and rearrangement would be very likely to destroy the system before much evolution could take place. In this paper we explore the possibility, using a model developed previously, that the search process could occur under different environmental conditions than the subsequent fixation and growth of a lifelike chemical system. We use the example of a rapid change in temperature to illustrate the effect and refer to the rapid change as a `quench' borrowing terminology from study of the physics and chemistry of glass formation. The model study shows that interrupting a high temperature nonequilibrium state with a rapid quench to lower temperatures can substantially increase the probability of producing a chemical state with lifelike characteristics of nonequilibrium metastability, internal dynamics and exponential population growth in time. Previously published data on the length distributions of proteomes of prokaryotes may be consistent with such an idea and suggest a prebiotic high temperature `search' phase near the boiling point of water. A rapid change in pH could have a similar effect. We discuss possible scenarios on early earth which might have allowed frequent quenches of the sort considered here to have occurred. The models show a strong dependence of the effect on the number of chemical monomers available for bond formation.
description: 13 pages, 13 figures
Non maximal cyclically monotone graphs and construction of a bipotential for the Coulomb's dry friction law
Creators: name: Buliga, Marius
name: de Saxce, Gery
name: Vallee, Claude
Publisher: name: arXiv
Year: 2008
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 49J53, 49J52, 26B25

description: We show a surprising connexion between a property of the inf convolution of a family of convex lower semicontinuous functions and the fact that the intersection of maximal cyclically monotone graphs is the critical set of a bipotential. We then extend the results from arXiv:math/0608424v4 to bipotentials convex covers, generalizing the notion of a bi-implicitly convex lagrangian cover. As an application we prove that the bipotential related to Coulomb's friction law is related to a specific bipotential convex cover with the property that any graph of the cover is non maximal cyclically monotone.
description: accepted by the Journal of Convex Analysis
40 Gbps Readout interface STARE for the AGATA Project
Creators: name: Karkour, N.
name: Alaphilippe, V.
name: Collado, J.
name: Dosme, N.
name: Gibelin, L.
name: Gonzalez, V.
name: Grave, X.
name: Jacob, J.
name: Lafay, X.
name: Legay, E.
name: Linget, D.
name: Pullia, A.
name: Quenez, M.
name: Sidler, D.
name: Tessier, N.
name: Vinther-Jorgensen, G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Signal Processing (eess.SP)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The Advanced GAmma Tracking Array (AGATA) multi detector spectrometer will provide precise information for the study of the properties of the exotic nuclear matter (very unbalanced proton (Z) and neutron (N) numbers) along proton- and neutron- drip lines and of super-heavy nuclei. This is done using the latest technology of particle accelerators. The AGATA spectrometer consists of 180 high purity Germanium detectors. Each detector is segmented into 38 segments. The very harsh project requirements are to measure gamma ray energies with very high resolution (< 1x 10 -3) at a high detector counting rate (50 Kevents / sec / crystal). This results in a very high data transfer rate per crystal (5 to 8 Gbps). The 38 segments are sampled @ 100 MHz with 14 bits of resolution. The samples are continuously transferred to the CAP module which reduces the data rate from 64 Gbps to 5 Gbps. The CAP module also adds continuous monitoring data which results in total outgoing data rate of 10 Gbps. The STARE module is designed to fit between the CAP module and the computer farm. It will package the data from the CAP module and transmit it to the server farm using a 10 Gbps UDP connection with a delivery insurance mechanism implemented to ensure that all data is transferred.
ความหลากหลายของพรรณไม้ในวนอุทยานภูผาล้อม อำเภอนาด้วง จังหวัดเลย
Creators: name: เทียมหทัย ชูพันธ์
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2558
Subjects: วนอุทยานภูผาล้อม, ความหลากหลายทางชีวภาพ, ป่าดิบแล้ง, ป่าเต็งรัง

description: 4, 34, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
Impact of composition on the dynamics of autocatalytic sets
Creators: name: Ravoni, Alessandro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Autocatalytic sets are sets of entities that mutually catalyse each other's production through chemical reactions from a basic food source. Recently, the reflexively autocatalytic and food generated theory has introduced a formal definition of autocatalytic sets which has provided promising results in the context of the origin of life. However, the link between the structure of autocatalytic sets and the possibility of different long-term behaviours is still unclear. In this work, we study how different interactions among autocatalytic sets affect the emergent dynamics. To this aim, we develop a model in which interactions are presented through composition operations among networks, and the dynamics of the networks is reproduced via stochastic simulations. We find that the dynamical emergence of the autocatalytic sets depends on the adopted composition operations. In particular, operations involving entities that are sources for autocatalytic sets can promote the formation of different autocatalytic subsets, opening the door to various long-term behaviours.
Spiked potentials and quantum toboggans
Creators: name: Znojil, Miloslav
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Even if the motion of a quantum (quasi-)particle proceeds along a left-right-symmetric (PT-symmetric) curved path in complex plane, the spectrum of bound states may remain physical, i.e., real and bounded below). We propose a generalization. Firstly, we show how the topologically less trivial (tobogganic) contours may be allowed to live on several sheets of a Riemann surface. Secondly, the specification of a scattering regime is formulated for such a class of models.
description: revision: 22 pp, 1 fig
title: Inbreds & Cannibals & Savages, Oh My!: A Genre Analysis of Appalachian Atrocities
Creators: name: Farley, Kerri
Publisher: name: University of Nevada, Las Vegas
publisherIdentifier: https://ror.org/0406gha72
publisherIdentifierScheme: ROR
Year: 2024

description: This thesis is an analysis of the representation of the Appalachian region in horror films. It examines the representations of the region in films such as The Hills Have Eyes, The Texas Chainsaw Massacre and Jug Face, and the representations of the inhabitants of Appalachia in films such as We Are What We Are. The analysis is conducted through a rhetorical analysis of the genre’s most core elements, such as the substance of the movie, the situational and stylistic, and the sensory aspects of the movies.
ปัจจัยที่มีความสัมพันธ์กับความกลัวในการรับบริการทางทันตกรรมของนักศึกษาระดับปริญญาตรี มหาวิทยาลัยมหาสารคาม
Creators: name: พัชรี อนุวรรณ์
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2558
Subjects: ความกลัว, ทันตกรรม, นักศึกษาระดับปริญญาตรี, มหาวิทยาลัยมหาสารคาม

description: 4, 34, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
Minuscule embeddings
Creators: name: Gross, Benedict
name: Garibaldi, Skip
Publisher: name: arXiv
Year: 2020
Subjects: subject: Representation Theory (math.RT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20G10 (Primary), 17B70, 20G41 (Secondary)

description: We study embeddings $J \rightarrow G$ of simple linear algebraic groups with the following property: the simple components of the $J$ module Lie($G$)/Lie($J$) are all minuscule representations of $J$. One family of examples occurs when the group $G$ has roots of two different lengths and $J$ is the subgroup generated by the long roots. We classify all such embeddings when $J = SL_2$ and $J = SL_3$, show how each embedding implies the existence of exceptional algebraic structures on the graded components of Lie($G$), and relate properties of those structures to the existence of various twisted forms of $G$ with certain relative root systems.
M/M/$\infty$ queues in semi-Markovian random environment
Creators: name: D'Auria, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K25, 60K37, 60D05

description: In this paper we investigate an M/M/$\infty$ queue whose parameters depend on an external random environment that we assume to be a semi-Markovian process with finite state space. For this model we show a recursive formula that allows to compute all the factorial moments for the number of customers in the system in steady state. The used technique is based on the calculation of the raw moments of the measure of a bidimensional random set. Finally the case when the random environment has only two states is deeper analyzed. We obtain an explicit formula to compute the above mentioned factorial moments when at least one of the two states has sojourn time exponentially distributed.
description: 17 pages, 2 figures
การพัฒนารูปแบบการป้องกันและควบคุมโรคไข้เลือดออกโดยชุมชนมีส่วนร่วมจังหวัดมหาสารคาม
Creators: name: ธนกฤต ชูคันหอม
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2558
Subjects: การป้องกันควบคุมโรคไข้เลือดออก, การมีส่วนร่วม

description: 4, 34, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
การพัฒนารูปแบบสื่อปฏิสัมพันธ์เพื่อส่งเสริมความสามารถในการคิดสำหรับผู้ที่มีความพิการทางการได้ยินโดยยึดหลักองค์ประกอบการคิดวิเคราะห์
Creators: name: ศิริพร น้อยอำคา
Publisher: name: มหาวิทยาลัยมหาสารคาม
Year: 2558
Subjects: สื่อปฏิสัมพันธ์, ความสามารถ, การคิดวิเคราะห์

description: 4, 34, วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม
Anomalous Andreev Reflection on a Torus-Shaped Fermi Surface
Creators: name: Luo, Wei
name: Chen, Wei
name: Xing, D. Y.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Andreev reflection (AR) refers to the electron-hole conversion at the normal metal-superconductor interface. In a three-dimensional metal with spherical Fermi surface, retro (specular) AR can occur with the sign reversal of all three (a single) components of particle velocity. Here, we predict a novel type of AR with the inversion of two velocity components, dubbed "anomalous-trajectory Andreev reflection" (AAR), which can be realized in a class of materials with torus-shaped Fermi surface, such as doped nodal line semimetals. For its toroidal circle perpendicular to the interface, the Fermi torus doubles the AR channels and generates multiple AR processes. In particular, the AAR and retro AR are found to dominate electron transport in the light and heavy doping regimes, respectively. We show that the AAR visibly manifests as a ridge structure in the spatially resolved nonlocal conductance, in contrast to the peak structure for the retro AR. Our work opens a new avenue for the AR spectroscopy and offers a clear transport signature of torus-shaped Fermi surface.
description: 12 pages, 4 figures, including supplemental material