cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A multi-axis confocal rheoscope for studying shear flow of structured fluids
Creators: name: Lin, Neil Y. C.
name: McCoy, Jonathan H.
name: Cheng, Xiang
name: Leahy, Brian
name: Israelachvili, Jacob N.
name: Cohen, Itai
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We present a new design for a confocal rheoscope that enables uniform uniaxial or biaxial shear. The design consists of two precisely-positioned parallel plates with a gap that can be adjusted down to 2$\pm$0.1 μm, allowing for the exploration of confinement effects. By using our shear cell in conjunction with a biaxial force measurement device and a high-speed confocal microscope, we are able to measure the real-time biaxial stress while simultaneously imaging the material 3D structure. We illustrate the importance of the instrument capabilities by discussing the applications of this instrument in current and future research topics in colloidal suspensions.
description: Figures and minor comments are updated
Assessment of Practices and Challenges of Knowledge Management in Selected Government Organizations: The Case of Addis Ababa City Administration and Oromia Region
Creators: name: Dagne, Temesegen
name: Tamiru, Yohannes
name: Alemu, Bonsen
Publisher: name: African Journal of Leadership and Development
Year: 2020

description: This study focuses on assessing the practices and challenges of knowledge management in selected organizations of Addis Ababa City Administration and Oromia Regional State. The main objective of the study was to assess and describe the current KM practices and challenges of A.A City Administration and Oromia Regional State in light of KM cycle, associated concepts, and suggests viable, remedial, and appropriate solutions or measures that can enhance its overall KM systems. With a view to achieving this objective, a descriptive research survey design had been dominantly applied. Moreover, the researchers employed mixed research approach, where qualitative method was made to be embedded within the quantitative method. A total of 315 respondents drawn from five study units, namely PSHRDB, EB, TVTEA, ICTDA, and M/PO were involved and used as a typical data source of the study. The respondents were selected using purposive and random sampling techniques. The data were collected by means of different primary and secondary research instruments, such as questionnaires and group interviews. Data analysis was largely made using descriptive statistics by means of SPSS version 21.0 and Microsoft Excel spreadsheet programs, and the findings were further discussed or interpreted through theory analysis approaches. Of the responses gathered, data collected, and analyzed, it was found that the study organizations have little concern in respect of treating KM as part of their asset base, there is no as such clearly written and communicated administrative procedure so as to guide knowledge capturing in the organizations, the knowledge sharing habit of respondent employees is very poor, the main reasons for the low level of knowledge sharing in the study organizations were lack of support and reward that initiates knowledge sharing, lack of established culture on information exchange, and lack of interest of sharing knowledge among workers (knowledge hoarding behavior of workers). The overall status of knowledge management practices in the study organizations was found to be very low. The study recommended that top managers/leaders should set directions, drive and support knowledge management in every way they can. In addition, a KM framework policy document that would serve as a blue print for knowledge management in the organizations should be developed and implemented. On top of this, employees should be knowledge-oriented, and the organizations should install knowledge management as an inseparable part of their organizational culture.
description: African Journal of Leadership and Development, Vol. 5 No. 1 (2020): National Economic Development
A different interpretation of "Measuring propagation speed of Coulomb fields" by R. de Sangro, G. Finocchiaro, P. Patteri, M. Piccolo, G. Pizzella
Creators: name: Shabad, Anatoly
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We claim that the anti-relativistic statement in de Sangro et al., Eur. Phys. J. C 75, 137 (2015) that the Coulomb field of a moving charge propagates rigidly with it, cannot as a matter of fact be inferred from the measurements reported in that reference. Registered is not the passing of the Coulomb disk, but the acceleration-dependent part of the Lienard-Wiechert field.
description: Comment on a work published in Eur. Phys. J. C, 3 pages
Future ESA Missions for SST: Providing Enhanced Continuity for Copernicus
Creators: name: Cipollini, Paolo
Publisher: name: Zenodo
Year: 2022

description: Short abstract Sustained observations in the visible and infrared domain are one of the pillars of the Copernicus Programme. For SST, the vast amount of data collected by the current Sentinel-3 Sea and Land Surface Temperature Radiometer (SLSTR) provide crucial input to a number of Services including the Copernicus Marine Environment Monitoring Service (CMEMS). Here we present three highly-synergistic missions currently in preparation that will continue and extend the space-based SST record. The Next Generation of Sentinel-3 Optical, to be launched in 2032, will address the evolution of the optical payloads OLCI and SLSTR. The primary Sentinel-3 NG Optical mission objective for SST is to achieve enhanced continuity for Copernicus, at least at the level of the quality of the current generation of Sentinel-3 SLSTR. We will illustrate the advanced technical concepts that are currently being evaluated as part of Phase 0 of the mission development, in particular those for the technical evolution of SLSTR and of the SST products. This in turn leads to enhanced services or new services, and also enables R&D into new applications. The coastal zone has also been identified as one of the complementary mission objectives of the Copernicus Expansion Land Surface Temperature Monitoring (LSTM) Mission (launch planned in 2028). The key observational requirements of the LSTM mission are systematic global acquisitions of high-resolution (50 metres) observations over land with a high revisit frequency of 2 days. Coastal waters are covered within 100 km from the shoreline, plus the full Mediterranean Sea and Caspian Sea, and coral reef areas. We will illustrate the main technical features of the instrument and the expected applications in the coastal zone. SST is also crucial in the Arctic. Monitoring SST with an all-weather instrument in the Arctic is key for the operational monitoring and forecasting by CMEMS, and is one of the two primary objectives of the Copernicus Imaging Microwave Radiometer (CIMR) mission, whose launch is also planned for 2028. We will describe the key requirements for CIMR SST, the expected SST products and their application to monitoring the melting of sea ice and ocean dynamics.
The atomistic representation of first strain-gradient elastic tensors
Creators: name: Admal, Nikhil Chandra
name: Marian, Jaime
name: Po, Giacomo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We derive the atomistic representations of the elastic tensors appearing in the linearized theory of first strain-gradient elasticity for an arbitrary multi-lattice. In addition to the classical (2nd-Piola) stress and elastic moduli tensors, these include the rank-three double-stress tensor, the rank-five tensor of mixed elastic moduli, and the rank-six tensor of strain-gradient elastic moduli. The atomistic representations are closed-form analytical expressions in terms of the first and second derivatives of the interatomic potential with respect to interatomic distances, and dyadic products of relative atomic positions. Moreover, all expressions are local, in the sense that they depend only on the atomic neighborhood of a lattice site. Our results emanate from the condition of energetic equivalence between continuum and atomistic representations of a crystal, when the kinematics of the latter is governed by the Cauchy-Born rule. Using the derived expressions, we prove that the odd-order tensors vanish if the lattice basis admits central-symmetry. The analytical expressions are implemented as a KIM compliant algorithm to compute the strain gradient elastic tensors for various materials. Numerical results are presented to compare representative interatomic potentials used in the literature for cubic crystals, including simple lattices and multi-lattices. We observe that central potentials exhibit generalized Cauchy relations for the rank-six tensor of strain-gradient elastic moduli. In addition, this tensor is found to be indefinite for many potentials. We discuss the relationship between indefiniteness and material stability. Finally, the atomistic representations are specialized to central potentials in simple lattices. These expressions are used with analytical potentials to study the sensitivity of the elastic tensors to the choice of the cutoff radius.
Targeted Antitubercular Peptide Nanocarriers Prepared by Flash NanoPrecipitation with Hydrophobic Ion Pairing
Creators: name: Ristroph, Kurt D.
name: McManus, Simon A.
name: Shetye, Gauri
name: Cho, Sang Hyun
name: Lee, Dennis
name: Szekely, Zoltan
name: Sinko, Patrick J.
name: Franzblau, Scott
name: Prud'homme, Robert K.
Publisher: name: University of Illinois at Chicago
Year: 2023
Subjects: Uncategorized

description: The encapsulation of therapeutics into nanocarriers with specialized surface chemistries for targeting applications in the body is a major goal in the field of drug delivery. Here the encapsulation of an antitubercular peptide, ecumicin, into monodisperse nanocarriers 60 nm in diameter using a combination of Flash NanoPrecipitation and hydrophobic ion pairing is demonstrated. The lead formulation achieves 70% ecumicin encapsulation efficiency and 24% loading by mass. In vivo single-dose oral (PO), subcutaneous (SC), and intraperitoneal (IP) pharmacokinetics (PK) are measured in mice, and the dose-normalized area under the curve (AUC) of ecumicin nanocarriers dosed IP exceeded the dose-normalized AUC of unencapsulated ecumicin dosed IP by a factor of 2.5. Next, variations of the lead formulation stabilized with a custom-synthesized poly(caprolactone)-block-poly(ethylene glycol)-hexamannose polymer at three levels of mannose surface coverage (0%, 4%, and 74% of polymer chains terminating in hexamannose) for targeting to macrophages are prepared. These formulations are evaluated against Mycobacterium tuberculosis in a macrophage culture at multiple concentrations and found to reduce colony-forming units (CFU) counts by up to 3.8-log10 units, with greater antitubercular ecumicin activity measured from formulations prepared with higher amounts of surface mannose coverage. Taken together, these results suggest that Flash NanoPrecipitation with hydrophobic ion pairing is an effective method for encapsulating ionizable peptide therapeutics into macrophage-targeted formulations for improved PK and targeted macrophage uptake in the body.
Pyridinamide Ion Pairs: Design Principles for Super-Nucleophiles in Apolar Organic Solvents
Creators: name: Burger, Veronika
name: Franta, Maximilian
name: O‘Donoghue, AnnMarie C.
name: Ofial, Armin R.
name: Gschwind, Ruth M.
name: Zipse, Hendrik
Publisher: name: Universität Regensburg
Year: 2025
Subjects: subject: 540 Chemie

description: A comprehensive analytical protocol combining conductivity, diffusion-ordered NMR (DOSY), and photometric kinetic measurements is employed to analyze the nucleophilic reactivity of pyridinamide ion pairs in low-polarity organic solvents. The association patterns of these systems are found to strongly depend on cation size, with larger cations favoring the formation of cationic triple ion sandwich complexes together with free and highly nucleophilic anions. Kinetic studies using the ionic strength-controlled benzhydrylium method demonstrate that pyridinamide ions exhibit significantly higher nucleophilicities as compared to established organocatalysts, particularly in low-polarity solvents. Nucleophilicities are furthermore found to correlate well with Brønsted basicities measured in water and with Lewis basicities calculated in dichloromethane. Taken together, these findings provide quantitative guidelines for the future design of highly active Lewis base catalysts.
Double-electron ionization driven by inhomogeneous fields
Creators: name: Chacón, A.
name: Ortmann, L.
name: Cucchietti, F.
name: Suárez, N.
name: Pérez-Hernández, J. A.
name: Ciappina, M. F.
name: Landsman, A. S.
name: Lewenstein, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Electron-electron correlation effects play an instrumental role in our understanding of sequential (SDI) and non-sequential double ionization (NSDI) mechanisms. Here, we present a theoretical study of NSDI driven by plasmonic-enhanced spatial inhomogeneous fields. By numerically solving the time-dependent Schrödinger equation for a linear reduced model of He and a double-electron time-evolution probability analysis, we provide evidence for the enhancement effects in NSDI showing that the double ionization yield at lower laser peak intensities is increased due to the inhomogeneity of the laser field. Furthermore, our quantum mechanical model, as well as classical trajectory Monte Carlo simulations, show that inhomogeneous fields are a useful tool for splitting the binary and recoil processes in the rescattering scenario.
description: 16 pages, 5 figures
Microstructure and High-Frequency Price Discovery in the Soybean Complex
Creators: name: Zhou, X.
name: Bagnarosa, G.
name: Gohin, A.
name: Pennings, J.
name: Debie, P.
name: Zhou, X.
name: Bagnarosa, G.
name: Gohin, A.
name: Pennings, J.
name: Debie, P.
Publisher: name: Unknown
Year: 2022
Subjects: subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: soybean
subject: futures market microstructure
subject: liquidity
subject: price discovery
subject: high-frequency

description: We develop a theoretical framework and propose a relevant empirical analysis of the soybean complex prices cointegration relationship in a highfrequency setting. We allow for heterogeneous expectations among traders on the multi-asset price dynamics and characterize the resulting market behavior. We demonstrate that the asset prices autoregressive matrix rank and the speed of reversion towards the long-term equilibrium are related to the market realized and potential liquidity, unlike the cointegrating vector. Our empirical application to the soybean complex, where we control for volatility, supports our theoretical results when the price idleness of the different assets is properly accounted for. Our analysis further suggests that the presence of cointegration among assets is related to the time of day and the contract maturities traded at a given time.
Supplementary material for : Cyclic Action Graphs for Goal Recognition Problems with Inaccurately Initialised Fluents
Creators: name: Harman, Helen
name: Simoens, Pieter
Publisher: name: Zenodo
Year: 2020

description: Supplementary material for Chapter 2 of my PhD Chapter title: Goal Recognition Paper title: Cyclic Action Graphs for Goal Recognition Problems with Inaccurately Initialised Fluents
Measure of Node Similarity in Multilayer Networks
Creators: name: Mollgaard, Anders
name: Zettler, Ingo
name: Dammeyer, Jesper
name: Jensen, Mogens H.
name: Lehmann, Sune
name: Mathiesen, Joachim
Publisher: name: arXiv
Year: 2016
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The weight of links in a network is often related to the similarity of the nodes. Here, we introduce a simple tunable measure for analysing the similarity of nodes across different link weights. In particular, we use the measure to analyze homophily in a group of 659 freshman students at a large university. Our analysis is based on data obtained using smartphones equipped with custom data collection software, complemented by questionnaire-based data. The network of social contacts is represented as a weighted multilayer network constructed from different channels of telecommunication as well as data on face-to-face contacts. We find that even strongly connected individuals are not more similar with respect to basic personality traits than randomly chosen pairs of individuals. In contrast, several socio-demographics variables have a significant degree of similarity. We further observe that similarity might be present in one layer of the multilayer network and simultaneously be absent in the other layers. For a variable such as gender, our measure reveals a transition from similarity between nodes connected with links of relatively low weight to dis-similarity for the nodes connected by the strongest links. We finally analyze the overlap between layers in the network for different levels of acquaintanceships.
description: 12 pages, 4 figures
Peculiarities of the Accretion Flow in the System HL CMa
Creators: name: Semena, Andrey
name: Revnivtsev, Mikhail
name: Buckley, David
name: Lutovinov, Alexander
name: Breytenbach, Hannes
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The properties of the aperiodic brightness variability for the dwarf nova HL CMa are considered. The variability of the system HL CMa is shown to be suppressed at frequencies above $7\times10^{-3}$Hz. Different variability suppression mechanisms related to the radiation reprocessing time, partial disk evaporation, and characteristic variability formation time are proposed. It has been found that the variability suppression frequency does not change when the system passes from the quiescent state to the outburst one, suggesting that the accretion flow geometry is invariable. It is concluded from the optical and X-ray luminosities of the system that the boundary layer on the white dwarf surface is optically thick in both quiescent and outburst states. The latter implies that the optically thick part of the accretion flow (disk) reaches the white dwarf surface. The accretion rate in the system, the flow geometry and temperature have been estimated from the variability power spectra and spectral characteristics in a wide energy range, from the optical to X-ray.
description: 14 pages, 6 figures
Nonlinear fiber gyroscope for quantum metrology
Creators: name: Luis, Alfredo
name: Morales, Irene
name: Rivas, Ángel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We examine the performance of a nonlinear fiber gyroscope for improved signal detection beating the quantum limits of its linear counterparts. The performance is examined when the nonlinear gyroscope is illuminated by practical field states, such as coherent and quadrature squeezed states. This is compared with the case of more ideal probes such as photon-number states.
description: 8 pages, 1 figure
Inverse Design for Self Assembly via On-the-Fly Optimization
Creators: name: Lindquist, Beth A.
name: Jadrich, Ryan B.
name: Truskett, Thomas M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Inverse methods of statistical mechanics have facilitated the discovery of pair potentials that stabilize a wide variety of targeted lattices at zero temperature. However, such methods are complicated by the need to compare, within the optimization framework, the energy of the desired lattice to all possibly relevant competing structures, which are not generally known in advance. Furthermore, ground-state stability does not guarantee that the target will readily assemble from the fluid upon cooling from higher temperature. Here, we introduce a molecular dynamics simulation-based, optimization design strategy that iteratively and systematically refines the pair interaction according to the fluid and crystalline structural ensembles encountered during the assembly process. We successfully apply this probabilistic, machine-learning approach to the design of repulsive, isotropic pair potentials that assemble into honeycomb, kagome, square, rectangular, truncated square and truncated hexagonal lattices.
description: 7 pages, 5 figures
Spatial sub-Rayleigh imaging analysis via speckle laser illumination
Creators: name: Wang, Yunlong
name: Wang, Feiran
name: Liu, Ruifeng
name: Chen, Dongxu
name: Gao, Hong
name: Zhang, Pei
name: Li, Fuli
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: It is commonly accepted that optical sub-Rayleigh imaging has potential application in many fields. In this Letter, by confining the divergence of the optical field, as well as the size of the illumination source, we show that the first-order averaged intensity measurement via speckle laser illumina- tion can make an actual breakthrough on the Rayleigh limit. For a high-order algorithm, it has been reported that the autocorrelation function can be utilized to achieve the sub-Rayleigh feature. However, we find that this sub- Rayleigh feature for the high-order algorithm is limited only to binary objects, and the image will be distorted when a gray object is placed. This property encourages us to find the physics behind the high-order correlation imaging algo- rithm. We address these explanations in this Letter and find that for different types of high-order algorithm, there is always a seat in the right place from the cross-correlation function.
Factors Affecting the Sustainability of Information Technology Projects in Public Organizations: The Case of the Ethiopian Revenues and Customs Authority
Creators: name: Akemachew, Abay
Publisher: name: African Journal of Leadership and Development
Year: 2020

description: The project environment in the 21st century is characterized by a high level of uncertainties mainly as a result of faster technological changes, involvement of various stakeholders with their diverse and ever-changing needs and requirements, and required an outlay of huge amounts of money. Therefore, in the dynamic environment, satisfying the needs and requirements of project stakeholders sustainably is challenging. The study aims to investigate the factors that affect the sustainability of information technology (IT) projects in the Ethiopian Revenue and Customs Authority (ERCA). In order to meet the objectives of the study, a descriptive research design and mixed research approach were employed. The result of the study has shown that the alignment of the introduced systems with the vision and mission of the Authority, the establishment of a department that can provide technical support for users and others are the identified factors that positively influence the sustainability of IT projects in ERCA. Some of the factors that negatively affect the sustainability of the products of IT projects include the absence of organizational policy and guidelines which can govern the utilization of IT, incompatibility of the existing technologies with some of the national proclamations and so forth. However, it is difficult to say as IT projects introduced to administer tax in ERCA are sustainable to some extent rather they are “challenged projects.” Therefore, to address the identified gaps, designating organizational policy and guidelines to govern the products of the IT projects scientifically is critically needed by ERCA. Also, the Authority should work with the concerned federal stakeholders to create alignment between the national frameworks and the introduced IT systems.
description: African Journal of Leadership and Development, Vol. 5 No. 1 (2020): National Economic Development
Podręcznik wykopaliskowy Polsko-Egipskiej misji archaeologicznej w "Marei" (Egipt)
Creators: name: Derda, Tomasz
name: Gwiazda, Mariusz
name: Pawlikowska-Gwiazda, Aleksandra
name: de Lellis-Danys, Katarzyna
name: Burdajewicz, Julia
name: Badura, Monika
Publisher: name: Zenodo
Year: 2023
Subjects: manual
excavations
Egypt
Marea
Philoxenite

description: Instrukcje prowadzenia prac wykopaliskowych i metod dokumentacyjnych stosowanych na stanowisku Marea (Egipt)
Intrinsic reflections in Coxeter systems
Creators: name: Mühlherr, Bernhard
name: Nuida, Koji
Publisher: name: arXiv
Year: 2016
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20F55

description: Let $(W,S)$ be a Coxeter system and let $s \in S$. We call $s$ a right-angled generator of $(W,S)$ if $st = ts$ or $st$ has infinite order for each $t \in S$. We call $s$ an intrinsic reflection of $W$ if $s \in R^W$ for all Coxeter generating sets $R$ of $W$. We give necessary and sufficient conditions for a right-angled generator $s \in S$ of $(W,S)$ to be an intrinsic reflection of $W$.
Exciting with Quantum Light. II. Exciting a two-level system
Creators: name: Carreño, J. C. López
name: Muñoz, C. Sánchez
name: del Valle, E.
name: Laussy, F. P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the excitation of a two-level system (2LS) by quantum light, thereby bringing our previous studies~(see part~I. of this series) to a target that is quantum itself. While there is no gain for the quantum state of the target as compared to driving it with classical light, its dynamical features, such as antibunching, can be improved. We propose a chain of two-level systems, i.e., setting the emission of each 2LS as the driving source of the following one, as an arrangement to provide better single-photon sources. At a fundamental level, we discuss the notion of strong-coupling between quantum light from a source and its target, and the several versions of the Mollow triplet that follow from various types of driving light. We discuss the Heitler effect of antibunched photons from the scattered light off a laser.
description: 21 pages, 12 figures
Constraints on Comet 332P/Ikeya-Murakami
Creators: name: Hui, Man-To
name: Ye, Quan-Zhi
name: Wiegert, Paul
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Encke-type comet 332P/Ikeya-Murakami is experiencing cascading fragmentation events during its 2016 apparition. It is likely the first splitting Encke-type comet ever being observed. A nongravitational solution to the astrometry reveals a statistical detection of the radial and transverse nongravitational parameters, $A_{1} = \left(1.54 \pm 0.39\right) \times 10^{-8}$ AU day$^{-2}$, and $A_{2} = \left(7.19 \pm 1.92\right) \times 10^{-9}$ AU day$^{-2}$, respectively, which implies a nucleus erosion rate of $\left(0.91 \pm 0.17\right)$% per orbital revolution. The mass-loss rate likely has to be supported by a much larger fraction of an active surface area than known cases of short-period comets; it may be relevant to the ongoing fragmentation. We failed to detect any serendipitous pre-discovery observations of the comet in archival data from major sky surveys, whereby we infer that 332P used to be largely inactive, and is perhaps among the few short-period comets which have been reactivated from weakly active or dormant states. We therefore constrain an upper limit to the nucleus size as $2.0 \pm 0.2$ km in radius. A search for small bodies in similar orbits to that of 332P reveals comet P/2010 B2 (WISE) as the best candidate. From an empirical generalised Jupiter-family (Encke-type included) comet population model, we estimate the likelihood of chance alignment of the 332P--P/2010 B2 pair to be 1 in 33, a small number indicative of a genetic linkage between the two comets on a statistical basis. The pair possibly originated from a common progenitor which underwent a disintegration event well before the twentieth century.
description: 3 tables, 5 figures. Accepted by AJ
Lumped Element Kinetic Inductance Detectors for space applications
Creators: name: Monfardini, Alessandro
name: Baselmans, Jochem
name: Benoit, Alain
name: Bideaud, Aurelien
name: Bourrion, Olivier
name: Catalano, Andrea
name: Calvo, Martino
name: D'Addabbo, Antonio
name: Doyle, Simon
name: Goupy, Johannes
name: Sueur, Helene Le
name: Macias-Perez, Juan
name: collaboration, NIKA2
name: collaboration, SPACEKIDS
name: collaboration, B-SIDE
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Kinetic Inductance Detectors (KID) are now routinely used in ground-based telescopes. Large arrays, deployed in formats up to kilopixels, exhibit state-of-the-art performance at millimeter (e.g. 120-300 GHz, NIKA and NIKA2 on the IRAM 30-meters) and sub-millimeter (e.g. 350-850 GHz AMKID on APEX) wavelengths. In view of future utilizations above the atmosphere, we have studied in detail the interaction of ionizing particles with LEKID (Lumped Element KID) arrays. We have constructed a dedicated cryogenic setup that allows to reproduce the typical observing conditions of a space-borne observatory. We will report the details and conclusions from a number of measurements. We give a brief description of our short term project, consisting in flying LEKID on a stratospheric balloon named B-SIDE.
description: To appear in the SPIE 2016 Proceedings
Critical Making Special Issue
Creators: name: Critical Making Consortium
Publisher: name: Zenodo
Year: 2023
Subjects: maker movement

description: Critical Making is a research project that adds scientific insights into the potential of the maker movement. By focusing on critical and socially responsible making, it shows how global maker communities can offer new opportunities for young makers of all genders to contribute to an open society via open source innovation.The research project received funding from the European Union’s Horizon 2020, and the consortium consists of five partners: The Centre for Social Innovation (ZSI), Global Innovation Gathering (GIG), VTT Technical Research Centre of Finland, Technische Universität Berlin (TUB), and Wikifactory (WIF). This special issue summarises the project's outcomes on the various aspects of Critical Making in a collection of scientific publications, which approach Critical Making from different angles. The research focus of the Critical Making project has been on the exploration of responsible innovation processes in the global maker community. More specifically aspects of gender and inclusiveness, openness, and the engagement of young people have been at the centre of our participatory research approach. This led to a series of academic findings, presented at conferences and published in academic outlets. Participatory research also led to very practical output formats and alternative publishing formats, next to the scientific publications. The Critical Making zine is such an example. Next to the findings directly derived from the Critical Making project and our intense collaboration with the global maker community, this summary also includes references to relevant work we encountered during our Critical Making journey. We would like to highlight some of the influential experts - academics and practitioners - who have been and keep exploring critical making practices from different perspectives. This ranges from more artistic approaches of Garnet Hertz to feminist and intersectional views of Stefanie Wuschitz. In the end, we hope that this collection of Critical Making publications inspires scholars to further explore and highlight the potential of responsible grassroots innovations in makerspaces.
Three-state interactions determine the second-order nonlinear optical response
Creators: name: Perez-Moreno, Javier
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Using the sum-rules, the sum-over-states expression for the diagonal term of first hyperpolarizability can be expressed as the sum of three-state interaction terms. We study the behavior of a generic three-state term to show that is possible to tune the contribution of resonant terms by tuning the spectrum of the molecule. When extrapolated to the off-resonance regime, the three-state interaction terms are shown to behave in a similar manner as the three-level model used to derive the fundamental limits. We finally show that most results derived using the three-level ansatz are general, and apply to molecules where more than three levels contribute to the second-order nonlinear response or/and far from optimization.
description: 12 pages, 6 figures
On the maximal use of Monte Carlo samples: re-weighting events at NLO accuracy
Creators: name: Mattelaer, Olivier
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Accurate Monte Carlo simulations for high-energy events at CERN's Large Hadron Collider, are very expensive, both from the computing and storage points of view. We describe a method that allows to consistently re-use parton-level samples accurate up to NLO in QCD under different theoretical hypotheses. We implement it in MadGraph5_aMC@NLO and show its validation by applying it to several cases of practical interest for the search of new physics at the LHC.
description: 10 pages
Restrained Dark $U(1)_d$ at Low Energies
Creators: name: Correia, F. C.
name: Fajfer, Svjetlana
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We investigate a spontaneously broken $U(1)_d$ gauge symmetry with a muon-specific dark Higgs. Our first goal is to verify how the presence of a new dark Higgs, $ϕ$, and a dark gauge boson, $V$, can simultaneously face the anomalies from the muon magnetic moment and the proton charge radius. Secondly, by assuming that $V$ must decay to an electron-positron pair, we explore the corresponding parameter space determined with the low energy constraints coming from $ K \to μX$, electron $(g-2)_e$, $K \to μν_μe^+ e^-$, $K \to μν_μμ^+ μ^-$, $τ\to ν_τμν_μe^+ e^-$. We focus in the scenario where the $V$ mass is below $ \sim 2 m_μ$ and the $ϕ$ mass runs from few MeV till $250$ MeV, with V-photon mixing of the order $ \sim\mathcal{O}(10^{-3})$. Among weak process at low energies, we check the influence of the new light vector on kaon decays as well as on the scattering $e^+ e^- \rightarrow μ^+ μ^- e^+ e^-$ and discuss the impact of the dark Higgs on $e^+ e^- \rightarrow μ^+ μ^- μ^+ μ^- $. Finally, we consider contributions of the V-photon mixing in the decays $π^0 \to γe^+ e^-$, $η\to γe^+ e^-$, $ρ\to πe^+ e^-$, $K^* \to K e^+ e^-$ and $ϕ(1020) \to ηe^+ e^-$.
description: 13 pages, 10 figures
Molecular dynamics of halogenated graphene - hexagonal boron nitride nanoribbons
Creators: name: Nemnes, George Alexandru
name: Visan, Camelia
name: Anghel, Dragos Victor
name: Manolescu, Andrei
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The hybrid graphene - hexagonal boron nitride (G-hBN) systems offer new routes in the design of nanoscale electronic devices. Using {\it ab initio} density functional theory calculations we investigate the dynamics of zig-zag nanoribbons a few interatomic distances wide. Several structures are analyzed, namely pristine graphene, hBN and G-hBN systems. By passivating the nanoribbon edges with hydrogen and different halogen atoms, one may tune the electronic and mechanical properties, like the band gap energies and the natural frequencies of vibration.
description: 6 pages 4 figures, Conference IC-MSQUARE, May 23-26, 2016, Athens, Greece
Multi-Objective Design of State Feedback Controllers Using Reinforced Quantum-Behaved Particle Swarm Optimization
Creators: name: Hassani, Kaveh
name: Lee, Won-Sook
Publisher: name: arXiv
Year: 2016
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, a novel and generic multi-objective design paradigm is proposed which utilizes quantum-behaved PSO(QPSO) for deciding the optimal configuration of the LQR controller for a given problem considering a set of competing objectives. There are three main contributions introduced in this paper as follows. (1) The standard QPSO algorithm is reinforced with an informed initialization scheme based on the simulated annealing algorithm and Gaussian neighborhood selection mechanism. (2) It is also augmented with a local search strategy which integrates the advantages of memetic algorithm into conventional QPSO. (3) An aggregated dynamic weighting criterion is introduced that dynamically combines the soft and hard constraints with control objectives to provide the designer with a set of Pareto optimal solutions and lets her to decide the target solution based on practical preferences. The proposed method is compared against a gradient-based method, seven meta-heuristics, and the trial-and-error method on two control benchmarks using sensitivity analysis and full factorial parameter selection and the results are validated using one-tailed T-test. The experimental results suggest that the proposed method outperforms opponent methods in terms of controller effort, measures associated with transient response and criteria related to steady-state.
Solo e Neutralidade Climática
Creators: name: Ramos, Alice
name: Cruzeiro, Catarina
name: Malhão, Fernanda
name: Lopes-Marques, Mónica
name: Cardoso, Patrícia
Publisher: name: Zenodo
Year: 2023
Subjects: Solo saudável
Biodiversidade
Proatividade social
Alterações climáticas
Neutradidade energética
Eduacação ambiental

description: Poster apresentado no evento GreenWeek-2023 decorrido na cidade de Guimarães (16 a 17 de Setembro, 2023).
Ellenbogengelenkluxation : Häufige Begleitverletzungen und aktuelle Therapiekonzepte
Creators: name: Klute, Lisa
name: Henssler, Leopold
name: Alt, Volker
name: Kerschbaum, Maximilian
Publisher: name: Universität Regensburg
Year: 2023
Subjects: subject: Joint instability · Collateral ligaments · Rupture · Fractures, bone · Reduction
subject: 610 Medizin

description: Zusammenfassung Luxationen des Ellenbogengelenks sind nach Schultergelenkluxationen eine der häufigsten Luxationsverletzungen am menschlichen Körper und stellen wegen ihrer Begleitverletzungen und Komplikationen weiterhin eine Herausforderung im klinischen Alltag dar. Betroffen sind v. a. junge Erwachsene, die sich während ihrer sportlichen oder alltäglichen Tätigkeiten verletzen. Unterschieden wird i. Allg. zwischen einer einfachen Ellenbogenluxation und einer Ellenbogenluxationsfraktur. Eine einheitliche Klassifikation oder ein Therapiealgorithmus hat sich jedoch insbesondere für die einfache Ellenbogenluxation mit den damit verbundenen ligamentären, muskulären und kapsulären Begleitverletzungen noch nicht durchgesetzt. Aufgrund dessen und wegen der Komplexität dieser Verletzung bedarf es eines standardisierten Vorgehens, um frühzeitig die optimale Therapie zu initiieren und den schmalen Behandlungspfad zwischen drohender chronischer Instabilität und Ellenbogensteife richtig auszuwählen. --------------------------------------------------- Dislocations of the elbow joint are among the most prevalent dislocation injuries in the human body after shoulder joint dislocations and represent a challenge in the clinical routine because of the concomitant injuries and complications. They predominantly affect young adults who become injured during athletic or daily activities. A distinction is generally made between a simple elbow dislocation and a dislocation fracture of the elbow; however, a uniform classification or treatment algorithm has not yet been established, especially for simple elbow dislocations with associated ligamentous, muscular and capsular concomitant injuries. Due to this and the complexity of this injury, a standardized approach is needed to initiate the optimal treatment at an early stage and to correctly select the narrow treatment pathway between impending chronic instability and elbow stiffness.
Efficient Energy Distribution in a Smart Grid using Multi-Player Games
Creators: name: Brihaye, Thomas
name: Dhar, Amit Kumar
name: Geeraerts, Gilles
name: Haddad, Axel
name: Monmege, Benjamin
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: Algorithms and models based on game theory have nowadays become prominent techniques for the design of digital controllers for critical systems. Indeed, such techniques enable automatic synthesis: given a model of the environment and a property that the controller must enforce, those techniques automatically produce a correct controller, when it exists. In the present paper, we consider a class of concurrent, weighted, multi-player games that are well-suited to model and study the interactions of several agents who are competing for some measurable resources like energy. We prove that a subclass of those games always admit a Nash equilibrium, i.e. a situation in which all players play in such a way that they have no incentive to deviate. Moreover, the strategies yielding those Nash equilibria have a special structure: when one of the agents deviate from the equilibrium, all the others form a coalition that will enforce a retaliation mechanism that punishes the deviant agent. We apply those results to a real-life case study in which several smart houses that produce their own energy with solar panels, and can share this energy among them in micro-grid, must distribute the use of this energy along the day in order to avoid consuming electricity that must be bought from the global grid. We demonstrate that our theory allows one to synthesise an efficient controller for these houses: using penalties to be paid in the utility bill as an incentive, we force the houses to follow a pre-computed schedule that maximises the proportion of the locally produced energy that is consumed.
description: In Proceedings Cassting'16/SynCoP'16, arXiv:1608.00177
Atualização da formatação e normalização (ABNT) do arquivo relativo ao template da Revista Práxis Educacional (ISSN 2178-2679), da UESB, para 2024
Creators: name: Nolasco, Marcelo
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 360205
subject: Technical writing

description: Atualização da formatação e normalização (ABNT) do arquivo relativo ao template da Revista Práxis Educacional (ISSN 2178-2679), da UESB, para 2024.
History of the solar-type protostar IRAS16293-2422 as told by the cyanopolyynes
Creators: name: Jaber, A. A.
name: Ceccarelli, C.
name: Kahane, C.
name: Viti, S.
name: Balucani, N.
name: Caux, E.
name: Faure, A.
name: Lefloch, B.
name: Lique, F.
name: Mendoza, E.
name: Quenard, D.
name: Wiesenfeld, L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Cyanopolyynes are chains of carbon atoms with an atom of hydrogen and a CN group on either side. They are detected almost everywhere in the ISM, as well as in comets. In the past, they have been used to constrain the age of some molecular clouds, since their abundance is predicted to be a strong function of time. We present an extensive study of the cyanopolyynes distribution in the solar-type protostar IRAS16293-2422 based on TIMASSS IRAM-30m observations. The goals are (i) to obtain a census of the cyanopolyynes in this source and of their isotopologues; (ii) to derive how their abundance varies across the protostar envelope; and (iii) to obtain constraints on the history of IRAS16293-2422. We detect several lines from HC3N and HC5N, and report the first detection of DC3N, in a solar-type protostar. We found that the HC3N abundance is roughly constant (~1.3x10^(-11)) in the outer cold envelope of IRAS16293-2422, and it increases by about a factor 100 in the inner region where Tdust>80K. The HC5N has an abundance similar to HC3N in the outer envelope and about a factor of ten lower in the inner region. The HC3N abundance derived in the inner region, and where the increase occurs, also provide strong constraints on the time taken for the dust to warm up to 80K, which has to be shorter than ~10^3-10^4yr. Finally, the cyanoacetylene deuteration is about 50\% in the outer envelope and <5$\% in the warm inner region. The relatively low deuteration in the warm region suggests that we are witnessing a fossil of the HC3N abundantly formed in the tenuous phase of the pre-collapse and then frozen into the grain mantles at a later phase. The accurate analysis of the cyanopolyynes in IRAS16293-2422 unveils an important part of its past story. It tells us that IRAS16293-2422 underwent a relatively fast (<10^5yr) collapse and a very fast (<10^3-10^4yr) warming up of the cold material to 80K.
description: Accepted for publication in A&A
Atualização da formatação e normalização (ABNT) do arquivo relativo ao template da Revista Práxis Educacional (ISSN 2178-2679) para 2024, da Universidade Estadual do Sudoeste da Bahia (UESB).
Creators: name: Nolasco, Marcelo
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 360205
subject: Technical writing

description: Arquivo relativo à formatação e normalização (ABNT) para o template da Revista Práxis Educacional (2178-2679) atualizado em janeiro de 2024.