cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Robustness of electricity systems with nearly 100% share of renewables: a worst-case study
Creators: name: Gutierrez-Garcia, Francisco
name: Arcos-Vargas, Angel
name: Gomez-Exposito, Antonio
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Several research studies have shown that future sustainable electricity systems, mostly based on renewable generation and storage, are feasible with current technologies and costs. However, recent episodes of extreme weather conditions, probably associated with climate change, cast shades of doubt on whether the resulting generation portfolios are sufficiently robust to assure, at all times, a suitable balance between generation and demand, when adverse conditions are faced. To address this issue, this work elaborates a methodology intended to determine a sustainable electricity system that can endure extreme weather conditions, which are likely to occur. First, using hourly production and demand data from the last decade, along with estimates of new uses of electricity, a worst-case scenario is constructed, including the storage capacity and additional photovoltaic power which are needed to serve the demand on an hourly basis. Next, several key parameters which may have a significant influence on the LCOE are considered, and a sensitivity analysis is carried out to determine their real impact, significance and potential trends. The proposed methodology is then applied to the Spanish system. The results show that, under the hypotheses and conditions considered in this paper, it is possible to design a decarbonized electricity system that, taking advantage of existing sustainable assets, satisfies the long-term needs by providing a reliable supply at an average cost significantly lower than current market prices.
description: 33 pages, 13 figures, 10 tables
Extraction and Characterization of Antioxidant from Orange Peels
Creators: name: Alene, Assefa
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: Antioxidants are substances which are able to prevent or inhibit oxidation processes in human body as well as in food products. Natural antioxidants have gained considerable interest in recent years for their role in preventing the auto oxidation of fats, oils and fat containing food products by replacing synthetic antioxidants. In this study, orange peel was selected as a source of natural antioxidant. The aim of this study was to investigate the antioxidant yield and antioxidant activity of two different varieties of orange peels namely Washington and Valencia using maceration extraction method with ethanol-water mixture binary solvent. Extraction yield was checked at different levels of extraction conditions. The extraction yield obtained ranged from 18-29% for Washington and 14.4-25.9% for Valencia. From the model regression equation developed, the linear terms of temperature, concentration and time had positive effect on response yield. The quadratic terms (pure and interaction quadratic terms) had negative effect on extraction yield except AB interaction for Valencia extract. Concentration had a more weighty linear effect on yield as compared to extraction temperature and time. Response yield was positively affected by linear terms and negatively affected by quadratic terms for Washington extract. From the linear effects, concentration had the highest positive effect on yield; and from quadratic effects, C2 had the highest negative effect. Antioxidant potential was examined by measuring total phenolic content (TPC), total flavonoid content (TFC), 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity (RSA) using spectrophotometer. The total phenol content ranged from 29.24 to 135.22 mg GAE/g extract for Washington and 61.94 to 182.58 mg GAE/g extract for Valencia. The total flavonoid content of Washington extract was 22.120 mg CAT/g extract and for Valencia, it was 25.456 mg CAT/g extract. DDPH radical inhibition activity ranged from 47.07 to 92.80 % for Washington and 55.91 to 93.40% for Valencia. Hence, Valencia extract has more potent in free radical inhibiting activity. Antioxidant potential of the extract was also examined by IC50 (concentration of extract or sample at which 50% of free radicals were inhibited). It was determined using linear regression. The IC50 value for Washington and Valencia, it was 1.1269mg/ml and 0.6731mg/ml respectively. The lower IC50 value the more potent antioxidant activity. Hence, Valencia extract has more potential in antioxidant activity than Washington extract. Keywords: Citrus sinensis, Orange peel, Total phenol content, Total flavonoid content, Antioxidant activity, DPPH free radical scavenging activity.
Comparing semi-analytic particle tagging and hydrodynamical simulations of the Milky Way's stellar halo
Creators: name: Cooper, Andrew P.
name: Cole, Shaun
name: Frenk, Carlos S.
name: Bret, Theo Le
name: Pontzen, Andrew
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Particle tagging is an efficient, but approximate, technique for using cosmological N-body simulations to model the phase-space evolution of the stellar populations predicted, for example, by a semi-analytic model of galaxy formation. We test the technique developed by Cooper et al. (which we call STINGS here) by comparing particle tags with stars in a smooth particle hydrodynamic (SPH) simulation. We focus on the spherically averaged density profile of stars accreted from satellite galaxies in a Milky Way (MW)-like system. The stellar profile in the SPH simulation can be recovered accurately by tagging dark matter (DM) particles in the same simulation according to a prescription based on the rank order of particle binding energy. Applying the same prescription to an N-body version of this simulation produces a density profile differing from that of the SPH simulation by <10 per cent on average between 1 and 200 kpc. This confirms that particle tagging can provide a faithful and robust approximation to a self-consistent hydrodynamical simulation in this regime (in contradiction to previous claims in the literature). We find only one systematic effect, likely due to the collisionless approximation, namely that massive satellites in the SPH simulation are disrupted somewhat earlier than their collisionless counterparts. In most cases this makes remarkably little difference to the spherically averaged distribution of their stellar debris. We conclude that, for galaxy formation models that do not predict strong baryonic effects on the present-day DM distribution of MW-like galaxies or their satellites, differences in stellar halo predictions associated with the treatment of star formation and feedback are much more important than those associated with the dynamical limitations of collisionless particle tagging.
description: MNRAS accepted. 14 pages, 10 figures (appendix 7 pages, 10 figures)
Additional file 1 of Reducing the burden of low back pain: results from a new microsimulation model
Creators: name: Kopec, Jacek A.
name: Sayre, Eric C.
name: Cibere, Jolanda
name: Li, Linda C.
name: Wong, Hubert
name: Okhmatovskaia, Anya
name: Esdaile, John M.
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 1: Appendix 1. Technical description of SimYouLate. Appendix 2. Additional tables and figures.
Extraction of Azadirachtin from Neem Seeds for Biopesticide Purpose
Creators: name: Gebrehawaria, Aklilu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: The effect of synthetic pesticides on the environment and human health is persistent and very aggressive. About 500,000 people are exposing to a series health problem caused by synthetic pesticides every year in the world. The objective of this study was extraction of azadirachtin from Neem seed for biopesticide application using ethanol as a solvent so that to claim environmental issue and clean economy as an alternative. The four factors analyzed in this study were particle size, extraction temperature, solvent to solid ratio and extraction time. The extraction process was carried out in four main stages namely; pretreatment, extraction, separation and concentration. The first stage was drying and grinding the raw seed to a particulate size of 350, 450 and 550μm. The raw seed have had 20.873% (w/w) of moisture content, with ash and organic matter content of 3.648 ± 0.187% and 96.3515% (w/w) respectively. Ethanol was prepared in a ratio of 5:1, 6:1 and 7:1v/w for extraction. Finally, the ground seed and the solvent were poured to an extraction vessel with overhead stirrer simultaneously and extraction was carried out until the extraction time becomes finished. An optimum yield was found 9.319g from 100g of sample with operational conditions of 350μm, 45oC, 6:1v/w and 4h of particle size, extraction temperature, solvent to solid ratio and extraction time respectively. The characteristics of azadirachtin were then evaluated using different analytical methods. The result found was; Rf value of TLC 0.7079 ± 0.0068, retention time of HPLC 3.03minute, specific gravity of 1.3355 ± 0.0743, the flash point was 35.05 ± 1.0966 oC, water solubility was 99.708 ± 0.0096% (w/v), acute toxicity of azadirachtin was 2343.0.777 ± 60.2106 mg/kg, acidity of azadiracthin was 4.0533 ± and TVOC's was 0.45095 ± 0.3360% (w/w). RSM of Box – Behnken method was used to justify the factors effect on the yield. From the statistical analysis method, all the factors had an impact on the yield directly. The interaction effect of particle size and solvent to solid ratio, particle size and extraction time, extraction temperature and extraction time and solvent to solid ratio and extraction time had also a significant effect on the yield. Depending on the model optimization design 363.95μm, 44.82oC, 6.62:1(v/w) and 3.68h of the factors were found the optimum points with 9.36399g yield of extract. Keywords: Neem seed, Azadirachtin, TLC, HPLC, TVOC's Acute toxicity and RSM
Estudio y análisis de las mezcla de mercadeo aplicada por las confeccionistas de ropa femenina en el sector microempresarial de la ciudad de Cartagena
Creators: name: Vargas Bustos, Ivan Dario
name: Pérez Torres, Leda María
Publisher: name: Universidad de Cartagena
Year: 1993
Subjects: Investigación de mercados
Análisis de mercado
Mercadeo

description: Tesis (Administrador de Empresas). - Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración de Empresas. 1993
description: El presente estudio tiene por objeto determinar la problemática del sector confecciones microempresarial en cuanto a producto, precio, promoción y canales de distribución para forma hallar soluciones viables que conlleven a un adecuado desarrollo del mismo y por ende la satisfacción del cliente.
Risk Assessment of Stealthy Attacks on Uncertain Control Systems
Creators: name: Anand, Sribalaji C.
name: Teixeira, André M. H.
name: Ahlén, Anders
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this article, we address the problem of risk assessment of stealthy attacks on uncertain control systems. Considering data injection attacks that aim at maximizing impact while remaining undetected, we use the recently proposed output-to-output gain to characterize the risk associated with the impact of attacks under a limited system knowledge attacker. The risk is formulated using a well-established risk metric, namely the maximum expected loss. Under this setups, the risk assessment problem corresponds to an untractable infinite non-convex optimization problem. To address this limitation, we adopt the framework of scenario-based optimization to approximate the infinite non-convex optimization problem by a sampled non-convex optimization problem. Then, based on the framework of dissipative system theory and S-procedure, the sampled non-convex risk assessment problem is formulated as an equivalent convex semi-definite program. Additionally, we derive the necessary and sufficient conditions for the risk to be bounded. Finally, we illustrate the results through numerical simulation of a hydro-turbine power system.
Confinement of Nematic and Chiral Nematic Systems and Their Response to External Stimuli
Creators: name: Kaufman, Jack
Publisher: name: Lancaster University
Year: 2022
Subjects: actuation
anisotropic
anisotropic wrinkling
bipolar configuration
birefringence
chiral dopant
chiral nematic
chiral
chirality
colour change
droplets
elastomer
liquid crystal
liquid crystal elastomer
liquid crystal polymer
magnetic alignment
materials chemistry
microdroplets
microfluidics
micro particle
microscopy
nanoparticle
nanoparticle infiltration
nanoparticles in microparticles
nematic
particles
photonics cross-communication
polarised light optical microscopy
POM
polymer
selective reflection
self-assembly
shape change
stimuli-responsive
surface wrinkling
twisted bipolar configuration

description: In this thesis, several examples of responsive liquid crystal elastomer microparticles are reported, as well as chiral nematic films. Bipolar nematic liquid crystal elastomer particles were of significant interest due their reversible shape change at the liquid crystal to isotropic phase transition. Furthermore, a spontaneous deformation of spherical droplets into spindle shaped particles upon irradiation with UV light was investigated. The spontaneous deformation and resulting particle surface morphology was studied to elucidate the phenomenon. Droplets and particles were subjected to external stimuli such as temperature and magnetic fields to produce samples with polar alignment not seen before in the literature. In addition, a microfluidic method is reported for the introduction of nanoparticles into bipolar nematic droplets with greater control of both droplet diameter as well as the number of nanoparticles within droplets compared to methods previously reported. To achieve this, polymer nanoparticles were dyed with fluorescent dye and suspended in organic solvent so that they were compatible with the microfluidic inner phase containing nematic monomer, photoinitiator and crosslinker in chloroform, to which they were added. After photopolymerisation, yielding nanoparticle infiltrated elastomer microparticles, we demonstrated, for the first time, a reversible shape change response to temperature of nematic elastomer microparticles with localised nanoparticles, an initial step for applications of these materials within areas such as micromechanics and soft robotics. Finally, doped chiral nematic systems were produced in the form of elastomer film and microparticle optical reflectors, and in some cases the dopant was extracted to produce chiral imprinted elastomers. Chiral doped monomer systems with tuneable selective reflection colours across the whole visible spectrum at room temperature are reported along with their responsiveness to temperature and pressure. Elastomer microparticles exhibited high quality optical properties after polymerisation, due to preserved internal mesogen alignment stemming from the particle size, monodispersity and overall quality of the droplets produced using our microfluidic method.
Tuesday Oct 27th
Creators: name: Graves, Robert, 1895-1985
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: Graves, Robert, 1895-1985
valueUri: http://id.worldcat.org/fast/31293
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945

description: Page from Robert Graves diary manuscript. The diary includes 1,546 pages with 117 enclosures: letters, clippings, photographs post cards, notes, games.
Partition and Code: learning how to compress graphs
Creators: name: Bouritsas, Giorgos
name: Loukas, Andreas
name: Karalias, Nikolaos
name: Bronstein, Michael M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Information Theory (cs.IT)
subject: Social and Information Networks (cs.SI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Can we use machine learning to compress graph data? The absence of ordering in graphs poses a significant challenge to conventional compression algorithms, limiting their attainable gains as well as their ability to discover relevant patterns. On the other hand, most graph compression approaches rely on domain-dependent handcrafted representations and cannot adapt to different underlying graph distributions. This work aims to establish the necessary principles a lossless graph compression method should follow to approach the entropy storage lower bound. Instead of making rigid assumptions about the graph distribution, we formulate the compressor as a probabilistic model that can be learned from data and generalise to unseen instances. Our "Partition and Code" framework entails three steps: first, a partitioning algorithm decomposes the graph into subgraphs, then these are mapped to the elements of a small dictionary on which we learn a probability distribution, and finally, an entropy encoder translates the representation into bits. All the components (partitioning, dictionary and distribution) are parametric and can be trained with gradient descent. We theoretically compare the compression quality of several graph encodings and prove, under mild conditions, that PnC achieves compression gains that grow either linearly or quadratically with the number of vertices. Empirically, PnC yields significant compression improvements on diverse real-world networks.
description: Published at NeurIPS 2021
Die Freuden und Risiken der Betreuung von Doktorarbeiten oder: Promotionen zahlen sich aus
Creators: name: Metz-Göckel, Sigrid
Publisher: name: Zentrum für HochschulBildung, Technische Universität Dortmund
Year: 2015
Subjects: subject: Promovierendenbetreuung
subject: Promotion
subject: 370

description: Gliederung: Promovieren im Verbund und in Einzelbetreuung. - Entstehung und Finanzierung einer Dissertation. - Wissenschaftliche Weiterbildung und Umkehr der Expertenrolle. - Kein/e Doktorand/in gleicht dem/der anderen. - Einzelbetreuung allein reicht nicht aus. - Anerkennung als Elixier und Kritik mit Vorsicht. - Abbruch und Ausstieg. - Rückmeldung von Doktorand/inn/en und Loyalität. - Besondere Herausforderungen für extern und in Drittmittelprojekten Promovierende. - Die Reputation der Institution und der Doktoreltern und andere Probleme. - Fazit.
description: Journal Hochschuldidaktik ; 26. Jahrgang 2015 Heft 1 und 2
Implementation and Experimental Evaluation of Reed-Solomon Identification
Creators: name: Ferrara, Roberto
name: Torres-Figueroa, Luis
name: Boche, Holger
name: Deppe, Christian
name: Labidi, Wafa
name: Mönich, Ullrich
name: Vlad-Costin, Andrei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Identification is a communication paradigm that promises exponential advantages over transmission for applications that do not actually require all messages to be reliably transmitted. Notably, the identification capacity theorems prove exponentially larger rates compared to classical transmission. However, there exist additional trade-offs that are not captured by these theorems and which become relevant for the deployment of identification in practical communication settings. In particular, in this paper we evaluate the latency introduced by computations at the encoder and decoder when employing identification codes. For this, we implement them using an explicit code construction based on Reed-Solomon codes and integrate it into a single carrier transmission system using software-defined radios. Our evaluation of the practical aspects of identification codes show that unless care is taken, these trade-offs can compromise the theoretical advantage given by the exponentially large identification rates.
description: 6 pages, 6 figures
Raue See und neblige Horizonte: Die Promotion in der Hochschuldidaktik
Creators: name: Van Treeck, Timo
Publisher: name: Zentrum für HochschulBildung, Technische Universität Dortmund
Year: 2015
Subjects: subject: Promotion
subject: Hochschuldidaktik
subject: 370

description: Gliederung: 1. Zwischen Forschung und Service. - 2. Argumente für die Forschung. - 3. Promotion in der Hochschuldidaktik - oder im Fach?. - 4. Forschungsmethoden. - 5. Forschungslandschaft und Unterstützungsmöglichkeiten. - 6. Austausch und Vernetzung. - 7. Niedrigschwellig einsteigen. - 8. Nur ein Anfang…
description: Journal Hochschuldidaktik;26. Jahrgang 2015, Heft 1 und 2
Pulp Production from Cotton Stalks using Kraft Pulping
Creators: name: Asmare, Gedefaw
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: The study aimed at optimizing pulping variables and selecting suitable delignification conditions for the production of pulp from cotton stalk. The influence of operational variables on the pulp yield and lignin dissolution of cotton stalks was studied. Cotton stalks chips were delignified in a laboratory pulpwood according to the Kraft pulping process. The conditions used were: Active alkali charge (5- 25%), sulfidity (10-50%), cooking temperature (155-175oC and cooking time (30 – 150 minutes). The cotton stalks chip size and liquor to solid ratio were kept constant at 2cmX0.5cmX0.5cm on average and 5L to 1kg, respectively. Experimental data were fitted into a central composite design and a quadratic equation has developed. Model prediction for pulp yield and kappa number showed good agreement with experimental data with error values less than 5%. Optimum pulp percent yield (39.79%) was obtained using at 16.65% of active alkali, 20% of sulfidity, 163oC temperature and 60 minutes of cooking time. The study shows that pulping at low temperatures for a short cooking time with high concentration of pulping liquor gives the best compromise for both pulp yield and kappa number/residual lignin content. The results of morphology analysis and pulp hand sheet physical tests shows that cotton stalks has similar fiber dimension and paper quality with eucalyptus.
Pedagogía del fortalecimiento de vínculos afectivos en la relación de pareja para la convivencia en familia. Corporación hogares crea, seccional Bolívar. Cartagena de indias D.T y C., 2008
Creators: name: Isaza Castro, Yulieth Patricia
Publisher: name: Universidad de Cartagena
Year: 2008
Subjects: subject: Trabajo social familiar
subject: Educación para la vida familiar
subject: Familia

description: El presente trabajo es el resultado de la experiencia y el ejercicio de las prácticas profesionales realizadas en la Corporación Hogares CREA, enfocado hacia la atención del subsistema pareja de familias con un miembro drogodependiente que se encuentra recibiendo tratamiento en dicha institución. Estas prácticas me permitieron trascender más allá de la realidad que solo alcanzamos a observar en la academia, permitiendo además desarrollar una actitud abierta y una capacidad de observación, libre de prejuicios, ya que la problemática abordada es muy compleja y requiere de una alta calidad humana.
Large vertex-flames in uncountable digraphs
Creators: name: Gut, Florian
name: Joó, Attila
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: Primary: 05C63, 05C20, 05C40 Secondary: 05C38

description: The study of minimal subgraphs witnessing a connectivity property is an important field in graph theory. The foundation for large flames has been laid by Lovász: Let $ D=(V,E) $ be a finite digraph and let $ r\in V $. The local connectivity $ κ_D(r,v) $ from $ r $ to $ v $ is defined to be the maximal number of internally disjoint $ r\rightarrow v $ paths in $ D $. A spanning subdigraph $ L $ of $ D $ with $ κ_L(r,v)=κ_D(r,v) $ for every $ v\in V-r $ must have at least $\sum_{v\in V-r}κ_D(r,v) $ edges. Lovász proved that, maybe surprisingly, this lower bound is sharp for every finite digraph. The optimality of an $ L $ sufficing the min-max criteria from Lovász' theorem may instead also be captured by the following structural characterization: For every $ v\in V-r $ there is a system $ \mathcal{P}_v $ of internally disjoint $ r\rightarrow v $ paths in $ L $ covering all the ingoing edges of $ v $ in $ L $ such that one can choose from each $ P\in \mathcal{P}_v $ either an edge or an internal vertex in such a way that the resulting set meets every $ r\rightarrow v $ path of $ D $. The positive result for countably infinite digraphs based on this structural infinite generalisation were obtained by the second author. In this paper we extend this to digraphs of size $ \aleph_1 $ which requires significantly more complex techniques. Despite solving yet the smallest uncountable case, the complete understanding of the concept and potentially a proof for arbitrary cardinality still seems to be far.
Additional file 1 of Microarray detection method for pathogen genes by on-chip signal amplification using terminal deoxynucleotidyl transferase
Creators: name: Kim, Tai-Yong
name: Lim, Min-Cheol
name: Lim, Jeong-A
name: Choi, Sung-Wook
name: Woo, Min-Ah
Publisher: name: figshare
Year: 2022
Subjects: subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: Table S1. Oligonucleotide information used in this study. Figure S1. Images of (A) a COC chip and (B) attachable reaction chambers. (C) An image of 25 µL of green dye solution injected into the reaction chambers attached to the COC chip. Scale bar is 25 mm. Figure S2. Capture images of array spots formed on the COC chip for optimization of experimental parameters. Scale bar is 4 mm. Figure S3. Agarose TBE gel (2.5%) electrophoresis results of the PCR or PCR and lambda exonuclease reaction product for the four pathogens. Lane M: GeneRuler 50 bp DNA ladder (Thermo Scientific) (1.5 µL per lane), lanes 1, 3, 5, and 7: PCR product of E. coli O157:H7, Listeria monocytogenes, Bacillus cereus, and Salmonella enterica Typhimurium, respectively. Lanes 2, 4, 6, and 8: lambda exonuclease reaction product after PCR of E. coli O157, Listeria monocytogenes, Bacillus cereus, and Salmonella enterica Typhimurium, respectively. Gel electrophoresis was conducted at 45 V for 90 min and gel staining was conducted with 1× SYBR Green I and II for 20 min.
A Plant Root System Algorithm Based on Swarm Intelligence for One-dimensional Biomedical Signal Feature Engineering
Creators: name: Gong, Rui
name: Hase, Kazunori
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: To date, very few biomedical signals have transitioned from research applications to clinical applications. This is largely due to the lack of trust in the diagnostic ability of non-stationary signals. To reach the level of clinical diagnostic application, classification using high-quality signal features is necessary. While there has been considerable progress in machine learning in recent years, especially deep learning, progress has been quite limited in the field of feature engineering. This study proposes a feature extraction algorithm based on group intelligence which we call a Plant Root System (PRS) algorithm. Importantly, the correlation between features produced by this PRS algorithm and traditional features is low, and the accuracy of several widely-used classifiers was found to be substantially improved with the addition of PRS features. It is expected that more biomedical signals can be applied to clinical diagnosis using the proposed algorithm.
Motion Planning for Variable Topology Trusses: Reconfiguration and Locomotion
Creators: name: Liu, Chao
name: Yu, Sencheng
name: Yim, Mark
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Truss robots are highly redundant parallel robotic systems that can be applied in a variety of scenarios. The variable topology truss (VTT) is a class of modular truss robots. As self-reconfigurable modular robots, a VTT is composed of many edge modules that can be rearranged into various structures depending on the task. These robots change their shape by not only controlling joint positions as with fixed morphology robots, but also reconfiguring the connectivity between truss members in order to change their topology. The motion planning problem for VTT robots is difficult due to their varying morphology, high dimensionality, the high likelihood for self-collision, and complex motion constraints. In this paper, a new motion planning framework to dramatically alter the structure of a VTT is presented. It can also be used to solve locomotion tasks that are much more efficient compared with previous work. Several test scenarios are used to show its effectiveness. Supplementary materials are available at https://www.modlabupenn.org/vtt-motion-planning/.
description: 20 pages, 36 figures
The Renyi Capacity and Center
Creators: name: Nakiboglu, Baris
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Renyi's information measures ---the Renyi information, mean, capacity, radius, and center--- are analyzed relying on the elementary properties of the Renyi divergence and the power means. The van Erven-Harremoes conjecture is proved for any positive order and for any set of probability measures on a given measurable space and a generalization of it is established for the constrained variant of the problem. The finiteness of the order $α$ Renyi capacity is shown to imply the continuity of the Renyi capacity on $(0,α]$ and the uniform equicontinuity of the Renyi information, both as a family of functions of the order indexed by the priors and as a family of functions of the prior indexed by the orders. The Renyi capacities and centers of various families of Poisson processes are derived as examples.
description: 32+8 pages. An error in the statement of Lemma 8 is corrected. The change is inconsequential for the rest of the paper
Auf dem Weg zur Professur - Bessere Chancen durch Berufungsberatung?
Creators: name: Kayser, Oliver
Publisher: name: Zentrum für HochschulBildung, Technische Universität Dortmund
Year: 2015
Subjects: subject: Berufungsverfahren
subject: 370

description: Gliederung: 1. Die Ausschreibung. - 2. Die Bewerbungsunterlagen. - 3. Die Umfeldanalyse. - 4. Der Probevertrag. - 5. Das Kennenlern-Gespräch. - 6. Den Ruf erhalten. Das Ziel ist erreicht. - 7. Verhandeln.
description: Journal Hochschuldidaktik;26. Jahrgang 2015, Heft 1 und 2
Dimensiones de la realidad, del discurso y de la oración en las relaciones del número entre el sujeto y el núcleo del predicado. (Hacia una gramática de la interacción)
Creators: name: Urango Ospina, Juan Carlos
Publisher: name: Universidad de Cartagena
Year: 1998
Subjects: Gramática

description: Tesis (Profesional en Lingüística y Literatura) -- Universidad de Cartagena. Facultad de Ciencias Humanas. Programa de Lingüística y Literatura, 1998
description: Este trabajo surgió de la necesidad de explicar algunas recurrencias lingüísticas del español en el plano sintáctico y morfológico, que operan por fuera de los conceptos, de los términos y de las reglas de cualquier gramática conocida. Hablamos de la puesta en escena del discurso por parte de los usuarios, la forma como éstos interiorizan sus propias reglas, sus propios fundamentos, y sobre todo, la forma como esas particularidades terminan imponiéndose por encima de toda lógica o valoración, permiten la interacción por parte de los individuos y no causan ningún trauma o interferencia en el circuito de la comunicación.
Discovery of two-dimensional Dirac nodal line fermions in monolayer Cu2Si
Creators: name: Feng, Baojie
name: Fu, Botao
name: Kasamatsu, Shusuke
name: Ito, Suguru
name: Cheng, Peng
name: Liu, Cheng-Cheng
name: Feng, Ya
name: Wu, Shilong
name: Mahatha, Sanjoy K.
name: Sheverdyaeva, Polina
name: Moras, Paolo
name: Arita, Masashi
name: Sugino, Osamu
name: Chiang, Tai-Chang
name: Shimada, Kenya
name: Miyamoto, Koji
name: Okuda, Taichi
name: Wu, Kehui
name: Chen, Lan
name: Yao, Yugui
name: Matsuda, Iwao
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Topological nodal line semimetals, a novel quantum state of materials, possess topologically nontrivial valence and conduction bands that touch at a line near the Fermi level. The exotic band structure can lead to various novel properties, such as long-range Coulomb interaction and flat Landau levels. Recently, topological nodal lines have been observed in several bulk materials, such as PtSn4, ZrSiS, TlTaSe2 and PbTaSe2. However, in two-dimensional materials, experimental research on nodal line fermions is still lacking. Here, we report the discovery of two-dimensional Dirac nodal line fermions in monolayer Cu2Si based on combined theoretical calculations and angle-resolved photoemission spectroscopy measurements. The Dirac nodal lines in Cu2Si form two concentric loops centred around the Γ point and are protected by mirror reflection symmetry. Our results establish Cu2Si as a new platform to study the novel physical properties in two-dimensional Dirac materials and provide new opportunities to realize high-speed low-dissipation devices.
description: Accepted in Nature Communications
Sunday Oct 25th
Creators: name: Graves, Robert, 1895-1985
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: Graves, Robert, 1895-1985
valueUri: http://id.worldcat.org/fast/31293
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945

description: Page from Robert Graves diary manuscript. The diary includes 1,546 pages with 117 enclosures: letters, clippings, photographs post cards, notes, games.
Estimating drift parameters in a fractional Ornstein Uhlenbeck Process with periodic mean
Creators: name: Dehling, Herold
name: Franke, Brice
name: Woerner, Jeannette H.C.
Publisher: name: Technische Universität Dortmund
Year: 2015
Subjects: subject: fractional Ornstein Uhlenbeck process
subject: least squares estimator
subject: periodic mean function
subject: long range dependence
subject: 310
subject: 330
subject: 620

description: We construct a least squares estimator for the drift parameters of a fractional Ornstein Uhlenbeck process with periodic mean function and long range dependence. For this estimator we prove consistency and asymptotic normality. In contrast to the classical fractional Ornstein Uhlenbeck process without periodic mean function the rate of conver- gence is slower depending on the Hurst parameter H, namely n1-H.
description: Discussion Paper / SFB 823;34/2015
Diseño de un observatorio para la medición de la productividad y seguimiento de su evolución en las Pymes manufactureras de la ciudad de Cartagena
Creators: name: Lozano Rebolledo, Regina Del Pilar
name: Peñaranda Jiménez, Leydi Karina
Publisher: name: Universidad de Cartagena
Year: 2009
Subjects: Pymes
Industria Manufacturera - Cartagena
Pymes - Productividad

description: Tesis (Administrador Industrial).-- Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración Industrial, 2009
description: Los constantes cambios en los mercados mundiales hacen que cada día las empresas sean más rigurosas en la gestión de sus procesos y en la calidad de sus productos, para brindar una mayor satisfacción y confiabilidad al cliente, además, de captar nuevas plazas de mercado que les permitan crecer y sostenerse en el largo plazo. Es por ello que la productividad cobra una gran importancia en las organizaciones y en los países ya que /a productividad es generadora de progreso económico, de utilidades, de mejoras en los salarios y el mejoramiento de los estándares de vida en un país. Por tal motivo el desarrollo de este trabajo, busca la creación de un organismo o ente que mida la productividad de las PYMES manufactureras de Cartagena y le haga un debido seguimiento, a fin de que las empresas tengan fuentes de información confiables para que sean mas competitivas en la medida en que implementen mejoras o correctivos a sus procesos con base en la información obtenida. De igual manera, cabe resaltar que no basta con sólo emitir cifras sino que se hace necesario un apoyo más profundo a las PYMES basado en asesorías brindadas a éstas en las áreas en las cuales presentan problemas y puedan llegar a superar éstos. Permitiendo que puedan generar un mejoramiento continuo que ayude a mejorar la calidad de los productos disminuyendo los productos defectuosos y generando una mayor rentabilidad y permanencia en el mercado.
Thursday Oct 29th
Creators: name: Graves, Robert, 1895-1985
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945
subject: Graves, Robert, 1895-1985
valueUri: http://id.worldcat.org/fast/31293

description: Page from Robert Graves diary manuscript. The diary includes 1,546 pages with 117 enclosures: letters, clippings, photographs post cards, notes, games.
Normalized Wolfe-Powell-type local minimax method for finding multiple unstable solutions of nonlinear elliptic PDEs
Creators: name: Liu, Wei
name: Xie, Ziqing
name: Yi, Wenfan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 35J20, 35B38, 65N12, 65J15, 65Jxx

description: The local minimax method (LMM) proposed in [Y. Li and J. Zhou, SIAM J. Sci. Comput., 23(3), 840--865 (2001)] and [Y. Li and J. Zhou, SIAM J. Sci. Comput., 24(3), 865--885 (2002)] is an efficient method to solve nonlinear elliptic partial differential equations (PDEs) with certain variational structures for multiple solutions. The steepest descent direction and the Armijo-type step-size search rules are adopted in [Y. Li and J. Zhou, SIAM J. Sci. Comput., 24(3), 865--885 (2002)] and play a significant role in the performance and convergence analysis of traditional LMMs. In this paper, a new algorithm framework of the LMMs is established based on general descent directions and two normalized (strong) Wolfe-Powell-type step-size search rules. The corresponding algorithm framework named as the normalized Wolfe-Powell-type LMM (NWP-LMM) is introduced with its feasibility and global convergence rigorously justified for general descent directions. As a special case, the global convergence of the NWP-LMM algorithm combined with the preconditioned steepest descent (PSD) directions is also verified. Consequently, it extends the framework of traditional LMMs. In addition, conjugate gradient-type (CG-type) descent directions are utilized to speed up the NWP-LMM algorithm. Finally, extensive numerical results for several semilinear elliptic PDEs are reported to profile their multiple unstable solutions and compared for different algorithms in the LMM's family to indicate the effectiveness and robustness of our algorithms. In practice, the NWP-LMM combined with the CG-type direction indeed performs much better than its known LMM companions.
description: 27 pages, 9 figures; Accepted by SCIENCE CHINA Mathematics on January 17, 2023
Development and Evaluation of Antimicrobial Aloe Based Packaging Films
Creators: name: Asefa, Gashaw
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2012

description: This study was aimed at the development of antimicrobial packaging films, which is one of the most promising active packaging systems, from aloe and papaya leaves extracts with gelatine and glycerol. Three different extracts of papaya leaves were analyzed for their antimicrobial activities. Mechanically obtained papaya leaf extract showed the best result (12.10mm inhibition zone on S.typhi). Based on antimicrobial activity, film forming ability, transparency, and colour; Aloe debrana extract was found to be more appropriate for the development of antimicrobial packaging films than Aloe trichosantha extract. The antimicrobial activity of Aloe debrana extract was increased by the incorporation of papaya leaf extract up to 30%, above which it did not bring significant influence on most test organisms. As a result 70% Aloe debrana extract and 30% papaya leaf extract standard solution was prepared. Various concentrations of gelatine and glycerol were added to the standard solution for packaging films development. Films were evaluated for their antimicrobial activities, physicochemical, and mechanical properties. The antimicrobial activities of aloe based films were tested on E. coli, S. typhi, S.aureus, C. albicans, and F. xylarioides. All films exhibited inhibitory zones on the test microorganisms used in this study. A wide inhibition zone (6.52cm2) was observed on S. typhi growth whereas the least (4.20 cm2) was on C.albicans. Films were soluble in water with highest solubility (90.49%) for P1,1 (film with 1g glycerol and 1g gelatine) and lowest (44.57) for P0,2(film developed by adding only gelatine). Film solubility significantly increased as the concentration of glycerol increased and decreased as the concentration of gelatine increased. Film P0.5,2(with 0.5g glycerol and 2g gelatine) has showed maximum tensile strength (65MPa) where as the lowest (20MPa) was obtained by film P0.5,1(0.5g glycerol and 1g gelatine). Increasing gelatine concentrations significantly increases the tensile strength but glycerol has an opposite effect on the tensile strength. All the films were highly flexible and stretchable. Film P1,2(1g glycerol and 2g gelatine) showed the maximum elongation (180%) and the minimum elongation (89%) was obtained for P0.5,1. This study demonstrated the technological feasibility of developing antimicrobial packaging films from aloe and papaya leaves extracts. Keywords: Aloe extracts, Antimicrobial packaging film, Mechanical properties, Papaya extracts, Pathogenic microorganisms, Physicochemical properties
Cross-correlation mediated by Majorana island with finite charging energy
Creators: name: Feng, Wei
name: Qin, Lupei
name: Li, Xin-Qi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Based on the many-particle-number-state treatment for transport through a pair of Majorana zero modes (MZMs) which are coupled to the leads via two quantum dots, we identify that the reason for zero cross correlation of currents at uncoupling limit between the MZMs is from a degeneracy of the teleportation and the Andreev process channels. We then propose a scheme to eliminate the degeneracy by introducing finite charging energy on the Majorana island which allows for coexistence of the two channels. We find nonzero cross correlation established even in the Majorana uncoupling limit (and also in the small charging energy limit), which demonstrates well the teleportation or nonlocal nature of the MZMs. More specifically, the characteristic structure of coherent peaks in the power spectrum of the cross correlation is analyzed to identify the nonlocal and coherent coupling mechanism between the MZMs and the quantum dots. We also display the behaviors of peak shift with variation of the Majorana coupling energy, which can be realized by modulating parameters such as the magnetic field.
description: 10 pages, 6 figures
Friday Oct 30
Creators: name: Graves, Robert, 1895-1985
Publisher: name: University of Victoria Libraries
Year: 2021
Subjects: subject: Graves, Robert, 1895-1985
valueUri: http://id.worldcat.org/fast/31293
subject: Authors, English
valueUri: http://id.worldcat.org/fast/821945

description: Page from Robert Graves diary manuscript. The diary includes 1,546 pages with 117 enclosures: letters, clippings, photographs post cards, notes, games.
title: Applying territorial innovation models to less favoured regions in Western Newfoundland
Creators: name: Carter, Ken
Publisher: name: Memorial University of Newfoundland
Year: 2022

description: Less favoured regions are struggling to adapt to global competition within the knowledge-based economy. Territorial Innovation Models (TIMs), particularly regional innovation systems and entrepreneurial ecosystems, suggest that entrepreneurial startups compete on their ability to innovate. However, less favoured regions and resource-based economies struggle with applying lessons from these models that are tech focused, urban centric and oriented to high growth firms. The question arises as to what TIMs have to say in support of innovation and entrepreneurship in less favoured regions? The quadruple helix and regional innovation systems (RIS) suggest interactions between university research, government support, community partners and industry to increase collaboration to maximize local development. In less favoured regions, key partners are either absent or in a weakened state. Entrepreneurial ecosystems call for entrepreneurs to lead local entrepreneurial efforts to allow new startups to emerge and create wealth and employment. This is problematic where the culture of entrepreneurship is weak, and entrepreneurs are not leading ecosystem development. The first goal of this thesis is to outline issues that arise in applying TIMs to less favoured regions. The second is to develop a theory-based model that is more relevant to less favoured regions to support local entrepreneurs, governments, and industry to create positive economic change in their regions. This thesis brings together key factors of RIS, entrepreneurial ecosystems and less favoured regions to develop a model that is more relevant to these regions. This adapted model pulls factors across seven themes that have emerged from the literature review of RIS, ecosystems and less favoured regions, to produce a working model that can support these regions.