cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Multiagent Reinforcement Learning Algorithm with Non-linear Dynamics
Creators: name: Abdallah, Sherief
name: Lesser, Victor
Publisher: name: arXiv
Year: 2014
Subjects: subject: Machine Learning (cs.LG)
subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: Several multiagent reinforcement learning (MARL) algorithms have been proposed to optimize agents decisions. Due to the complexity of the problem, the majority of the previously developed MARL algorithms assumed agents either had some knowledge of the underlying game (such as Nash equilibria) and/or observed other agents actions and the rewards they received. We introduce a new MARL algorithm called the Weighted Policy Learner (WPL), which allows agents to reach a Nash Equilibrium (NE) in benchmark 2-player-2-action games with minimum knowledge. Using WPL, the only feedback an agent needs is its own local reward (the agent does not observe other agents actions or rewards). Furthermore, WPL does not assume that agents know the underlying game or the corresponding Nash Equilibrium a priori. We experimentally show that our algorithm converges in benchmark two-player-two-action games. We also show that our algorithm converges in the challenging Shapleys game where previous MARL algorithms failed to converge without knowing the underlying game or the NE. Furthermore, we show that WPL outperforms the state-of-the-art algorithms in a more realistic setting of 100 agents interacting and learning concurrently. An important aspect of understanding the behavior of a MARL algorithm is analyzing the dynamics of the algorithm: how the policies of multiple learning agents evolve over time as agents interact with one another. Such an analysis not only verifies whether agents using a given MARL algorithm will eventually converge, but also reveals the behavior of the MARL algorithm prior to convergence. We analyze our algorithm in two-player-two-action games and show that symbolically proving WPLs convergence is difficult, because of the non-linear nature of WPLs dynamics, unlike previous MARL algorithms that had either linear or piece-wise-linear dynamics. Instead, we numerically solve WPLs dynamics differential equations and compare the solution to the dynamics of previous MARL algorithms.
Drift Chamber Alignment using Cosmic Rays
Creators: name: Kotwal, Ashutosh V.
name: Hays, Christopher P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The Collider Detector at Fermilab (CDF) is a general-purpose experimental apparatus with an inner tracking detector for measuring charged particles, surrounded by a calorimeter for measurements of electromagnetic and hadronic showers, and a muon detector system. We present a technique for, and results of, a precise relative alignment of the drift chamber wires of the CDF tracker. This alignment has been an important component of the track momentum calibration, which is the basis for the charged-lepton calibration for the measurement of the W boson mass at CDF.
Turismo, animação e lazer em espaço urbano
Creators: name: Mendes, Edite Manuela Teixeira
name: Cunha, Maria José Dos Santos
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2020

description: O turismo é cada vez mais um fenómeno gerador de riqueza e um veículo importante para o desenvolvimento económico de uma região. Actualmente, este sector representa, na economia portuguesa, a maior fatia de receitas, uma vez que muitos são os turistas que nos visitam movidos por inúmeras motivações. Com base nestes factos procuraremos dar a conhecer neste artigo os traços mais marcantes de um projecto de investigação com o qual se pretendeu verificar até que ponto as actividades de animação e lazer, desenvolvidas na cidade de Guimarães — uma cidade que sempre nos serviu como referência cultural e que hoje, classificada pela UNESCO como Património da Humanidade, é candidata a Capital Europeia da Cultura 2012 — influenciam a escolha deste destino turístico.
description: Revista Turismo & Desenvolvimento, Vol 2 No 13/14 (2010)
title: Morphological profiling in human dopaminergic neurons identifies mitochondrial uncoupling as a neuroprotective effect
Creators: name: Vyron Gorgogietas
name: Amélie Weiss
name: Loïc Cousin
name: David Hoffmann
name: Karen Schmitt
name: Arnaud Ogier
name: Peter Barbuti
name: Bruno Filipe Rodrigues Dos Santos
name: Ibrahim Boussaad
name: Annika Wittich
name: Andrea Zaliani
name: Ole Pless
name: Rejko Krüger
name: Peter Sommer
name: Johannes H. Wilbertz
Publisher: name: LCSB
Year: 2024

description: Multiple pathological cell biological processes in midbrain dopaminergic (mDA) neurons contribute to Parkinson's disease (PD). Described disease mechanisms converge upon defects in protein degradation, disruption of vesicular trafficking, endolysosomal function, mitochondrial dysfunction and oxidative stress. Current cellular PD models for in vitro drug discovery are often of non-neuronal origin and do not take complex pathological interactions into account and focus on a single readout or phenotype. Here, we used patient-derived SNCA triplication (SNCA-4x) and isogenic control (SNCA-corr) mDA neurons and applied high-content imaging-based morphological profiling with the goal to determine and rescue multiple phenotypes simultaneously. We performed compound screening using a total of 1,020 compounds with biological activity annotations relevant to PD pathobiology including some FDA-approved drugs. We scored compounds based on their ability to revert the SNCA-4x mDA neuron morphological profile towards a healthy-like isogenic control neuronal profile. Top-scoring compounds led to a morphological rescue in SNCA-4x mDA neurons including increased Tyrosine hydroxylase (TH) level and decreased total α- synuclein (αSyn) protein levels. Multiple hit compounds were also linked to mitochondrial biology and we further evaluated them by determining their effect on neuronal mitochondrial membrane potential and cytoplasmic ROS levels. Additional biochemical analysis of the protonophore and mitochondrial uncoupler Tyrphostin A9 showed decreased total ROS levels and normalized mitochondrial membrane potential, and an increase in mitochondrial respiration. We confirmed this effect in mDA neurons by using five structurally related molecules and measuring mitochondrial activity and membrane potential. Additionally, Western blotting indicated that mitochondrial uncouplers, such as Tyrphostin A9, can decrease both low and high molecular weight forms of αSyn. Based on target agnostic morphological profiling in human mDA neurons, we therefore identified a connection between the compound-induced rescue of multiple morphological features, mild mitochondrial uncoupling, and a αSyn protein level decrease.
RAINFALL VARIABILITY ANALYSIS FOR CROP PRODUCTION IN BURUNDI
Creators: name: Didace RWABITEGA
Publisher: name: Zenodo
Year: 2008

description: In Burundi, agriculture engages for approximatively 80% of the economically

active population and it remains a very important economic sector. In this part of

the world rainfed agriculture is largely dominant; food security and income of

rural populations are vulnerable to rainfall variability. Therefore, rainfall being an

important climatic factor in crop production, the main objective of this research

was to analyze the spatial and temporal variability of rainfall in Burundi.

For this purpose, 16 meteorological stations with 30 years of data record have

been used. Investigation of monthly, seasonal and annual rainfall variability using

different methods reveals that there is spatial variability of rainfall in Burundi.

Spatial analysis shows that the entire country can be classified into four

homogeneous zones depending upon their moisture availability index. The

results indicated that distribution of annual rainfall didn't show significant change

within the period considered
title: Marine Conventions
Creators: name: ELS IPR BOOKS
Publisher: name: Профобразование
Year: 2025

description: Учебное пособие соответствует действующей программе и содержит методические рекомендации и систему заданий для аудиторных и самостоятельных практических работ по Международным морским конвенциям. Международные морские соглашения призваны улучшать общее функционирование в области морского права. Процесс его формирования происходит до сих пор благодаря внесению поправок. Это также связано с соблюдением трудовых, экологических и прочих норм. Именно по этой причине информация о международных морских кодексах имеет большое значение для каждого моряка. Учебное пособие состоит из 6 разделов, которые включают устные темы и лексико-грамматические задания (аудиторные и внеаудиторные). Подобранный лексико-грамматический материал и упражнения направлены на формирование навыков чтения, письма, устной монологической и диалогической речи. Подготовлено в соответствии с Федеральным государственным образовательным стандартом среднего профессионального образования. Учебное пособие по дисциплине ОГСЭ.04 «Иностранный язык в профессиональной деятельности» предназначено для курсантов старших курсов специальности «Судовождение».
Forward-backward multiplicity correlations of target fragments in nucleus-emulsion collisions at a few hundred MeV/nucleon
Creators: name: Zhang, Dong-Hai
name: Chen, Yan-Ling
name: Wang, Guo-Rong
name: Li, Wang-Dong
name: Wang, Qing
name: Yao, Ji-Jie
name: Zhou, Jian-Guo
name: Li, Rong
name: Li, Jun-Sheng
name: Li, Hui-Ling
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The forward-backward multiplicity and correlations of target evaporated fragment(black track particle) and target recoiled proton(grey track particle) emitted in 150 A MeV He-emulsion, 290 A MeV C-emulsion, 400 A MeV C-emulsion, 400 A MeV Ne-emulsion and 500 A MeV Fe-emulsion interactions are investigated. It is found that the forward and backward averaged multiplicity of grey, black and heavily ionized track particle increase with the increase of target size. Averaged multiplicity of forward black track particle, backward black track particle, and backward grey track particle do not depend on the projectile size and energy, but the averaged multiplicity of forward grey track particle increases with increase of projectile size and energy. The backward grey track particle multiplicity distribution follows an exponential decay law and the decay constant decreases with increase of target size. The backward-forward multiplicity correlations follow linear law which is independent of the projectile size and energy, and the saturation effect is observed in some heavy target data sets.
description: 18 pages, 8 figures
Discovery of eight z ~ 6 quasars from Pan-STARRS1
Creators: name: Bañados, E.
name: Venemans, B. P.
name: Morganson, E.
name: Decarli, R.
name: Walter, F.
name: Chambers, K. C.
name: Rix, H-W.
name: Farina, E. P.
name: Fan, X.
name: Jiang, L.
name: McGreer, I.
name: De Rosa, G.
name: Simcoe, R.
name: Weiß, A.
name: Price, P. A.
name: Morgan, J. S.
name: Burgett, W. S.
name: Greiner, J.
name: Kaiser, N.
name: Kudritzki, R. -P.
name: Magnier, E. A.
name: Metcalfe, N.
name: Stubbs, C. W.
name: Sweeney, W.
name: Tonry, J. L.
name: Wainscoat, R. J.
name: Waters, C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: High-redshift quasars are currently the only probes of the growth of supermassive black holes and potential tracers of structure evolution at early cosmic time. Here we present our candidate selection criteria from the Panoramic Survey Telescope & Rapid Response System 1 and follow-up strategy to discover quasars in the redshift range 5.75.7 by more than 10%. We additionally recovered 18 previously known quasars. The eight quasars presented here span a large range of luminosities (-27.3 < M_{1450} < -25.4; 19.6 < z_ps1 < 21.2) and are remarkably heterogeneous in their spectral features: half of them show bright emission lines whereas the other half show a weak or no Ly$α$ emission line (25% with rest-frame equivalent width of the Ly$α$ + Nv line lower than 15Å). We find a larger fraction of weak-line emission quasars than in lower redshift studies. This may imply that the weak-line quasar population at the highest redshifts could be more abundant than previously thought. However, larger samples of quasars are needed to increase the statistical significance of this finding.
description: AJ in press, 16 pages, 5 figures, 7 tables
Customer Perception and Responsiveness Behavior Study on Bulk SMS Advertisements for Target Customer Identification: The case of Ethio Telecom
Creators: name: Getachew, Samuel
Publisher: name: Zenodo
Year: 2020

description: Bulk-messaging, one of the technologies carried by the telecom industry, is a process of sending a large number of messages to many people at once. It is likely a more economical and effective way of marketing media as compared to others. Therefore, many companies are using this service for advertisement. Since it is most likely flooding without customers’ consent, it can be one of the services that affect customers’ responsiveness behavior. Studying customers’ preferences prior to sending a message will help to overcome resource dissipation due to messaging and reduces customers’ offensiveness.
Monte Carlo Sampling Methods for Approximating Interactive POMDPs
Creators: name: Doshi, Prashant
name: Gmytrasiewicz, Piotr J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Partially observable Markov decision processes (POMDPs) provide a principled framework for sequential planning in uncertain single agent settings. An extension of POMDPs to multiagent settings, called interactive POMDPs (I-POMDPs), replaces POMDP belief spaces with interactive hierarchical belief systems which represent an agent's belief about the physical world, about beliefs of other agents, and about their beliefs about others' beliefs. This modification makes the difficulties of obtaining solutions due to complexity of the belief and policy spaces even more acute. We describe a general method for obtaining approximate solutions of I-POMDPs based on particle filtering (PF). We introduce the interactive PF, which descends the levels of the interactive belief hierarchies and samples and propagates beliefs at each level. The interactive PF is able to mitigate the belief space complexity, but it does not address the policy space complexity. To mitigate the policy space complexity -- sometimes also called the curse of history -- we utilize a complementary method based on sampling likely observations while building the look ahead reachability tree. While this approach does not completely address the curse of history, it beats back the curse's impact substantially. We provide experimental results and chart future work.
El lugar del caos
Creators: name: Giménez Morte, Carmen
Publisher: name: Zenodo
Year: 2005

description: Como  uno de los objetivos principales de la convocatoria de El Arte del Desecho, aparece la capacidad de reciclar. Reciclar objetos que supuestamente se tiran porque ya no sirven para su función, pero ahí se tranforman gracias a la imaginación y a la labor contructora de los artistas. Otro objetivo es contruir la obra al aire libre, en el lugar en el que va a ser depositada para ser vista, es decir, contruir "arte" a la vista del ciudadano, contruir arte como medio de comunicación y de conocimiento del mundo a través de renovar la mirada hacia los objetos y los materiales que, transformados, se convierten en algún objeto útil e imaginativo. En concreto, la obra de  Rafael Peinado y su grupo, titulada Interrelació atómica, es el disparador para reflexionar sobre el concepto de inestabilidad, sobre la utilidad del arte contemporáneo, sobre la sostenibilidad de nuestro sistema socioeconómico, y sobre la idea de creación colectiva.
دور الإبتكار التسويقي في تحقيق القدرة التنافسية في المؤسسات الصغيرة والمتوسطة "ملبنة النايلي بالجلفة أنموذجا''.
Creators: name: Khaled, Gachi
name: Nouari Kheira
Publisher: name: figshare
Year: 2020
Subjects: subject: 150506 Marketing Theory
subject: FOS: Economics and business

description: هدفت هذه الدراسة التعرف على دور الابتكار التسويقي في تحقيق القدرة التنافسية للمؤسسة محل الدراسة، و لتحقيق هدف الدراسة واختبار الفرضيات فإننا تعاملنا مع نوعين من البيانات هما البيانات الثانوية و البيانات الأولية، حيث تم تصميم استبانة وزعت على أعضاء مجلس الإدارة في المؤسسة المدروسة؛ حيث تم إيجاد المتوسطات الحسابية و الانحرافات المعيارية و التوزيع التكراري النسب المئوية، بهدف التعرف على تقييمات المبحوثين لكل عبارة من العبارات الواردة كما تم اختبار فرضيات الدراسة باستخدام تحليل الانحدار الخطي البسيط.
Matters on a moving brane
Creators: name: Koivisto, Tomi Sebastian
name: Wills, Danielle Elizabeth
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A novel generalisation of the Dirac-Born-Infeld string scenario is described. It is shown that matter residing on the moving brane is dark and has the so-called disformal coupling to gravity. This gives rise to cosmologies where dark matter stems from the oscillations of the open strings along the brane and the transverse oscillations result in dark energy. Furthermore, due to a new screening mechanism that conceals the fifth force from local experiments, one may even entertain the possibility that the visible sector is also moving along the extra dimensions.
description: 7 pages, 2 pictures. Received an Honorable Mention in the Gravity Research Foundation Essay Contest 2013
Research on Investment Strategies Considering Investors' Emotions Based on Optimized CNN Algorithm
Creators: name: Tian, Zhongkai
Publisher: name: Zenodo
Year: 2023

description: : This paper explores how to extract investor sentiment in text using an optimized convolutional neural network algorithm and form investor opinions based on it, so as to construct a portfolio model with a higher rate of return. Specifically, based on the text data of SSE 50 constituent stocks in the Oriental Fortune stock bar, the optimized convolutional neural network algorithm is used to classify the sentiment, and then calculate the daily investor sentiment indicator; further, the sentiment indicator, the stock closing price, and the trading volume are used as the inputs of the long- and short-term memory network to predict the future returns of the stocks; finally, the prediction results are used as the investor's viewpoints to construct the portfolio model with a higher return. Finally, the prediction results are placed in the Black-Litterman model to construct a portfolio model that takes investor sentiment into account. The backtest results show that the optimized convolutional neural network algorithm-based portfolio model with investor sentiment has better performance.
Vaccinia Viral Vectors and Its applications
Creators: name: Harsh Rajeshbhai Jogi*1 , Nabaneeta Smaraki2 , Sonali Sonejita Nayak3, , Ajay Kumar Yadav1, Kaushal Kishor Rajak1
Publisher: name: The Science world a Monthly e magazine
Year: 2023

description: Vaccinia virus has been constructed to express foreign genes and used as powerful vectors for production of recombinant proteins. Originating from highly efficacious vaccines securing world-wide eradication of smallpox, vaccinia vectors can be used as delivery system for heterologous genes encoding enzymes, antigens and hormones. Concerns about the safety of vaccinia virus have been addressed by the development of vectors based on attenuated viruses. Amongst them, modified vaccinia virus Ankara (MVA) can be considered as current choice for clinical investigation. As compared to replication competent vaccinia viruses, MVA and NYVAC provides similar levels of recombinant gene expression even in non-permissive cells. However, there are still some concerns regarding the safety and efficacy of vaccinia virus. In this article we have briefly discussed the essential information about vaccinia viral vector including its applications.
Αλγόριθμοι μηχανικής μάθησης για την πρόβλεψη της κρίσιμης θερμοκρασίας των υπεραγωγών
Creators: name: Βύρος, Κυριάκος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2024
Subjects: Υπεραγωγοί
Μηχανική μάθηση
Κρίσιμη θερμοκρασία
Superconductors
Machine learning
Critical temperature

description: Η εργασία διερευνά τη συνέργεια μεταξύ της μηχανικής μάθησης (ML) και της υπεραγωγιμότητας, με στόχο να βελτιώσει την προγνωστική ακρίβεια των κρίσιμων θερμοκρασιών (Tc) στους υπεραγωγούς. Μέσω της εκπαίδευσης μοντέλων σε εκτεταμένο σύνολο δεδομένων υπεραγωγών παρέχονται πληροφορίες για τους παράγοντες που επηρεάζουν την Tc. Σκοπό αποτελεί η δυναμική της συμβολής στη σύνθεση νέων υπεραγώγιμων υλικών και τη διαφώτιση των υποκείμενων φυσικών διαδικασίων της υπεραγωγιμότητας. Τα κεφάλαια αναλύουν το ιστορικό και τη σημασία της υπεραγωγιμότητας, τις μεθοδολογίες που χρησιμοποιούνται στη ML για την προγνωστική μοντελοποίηση και τα εμπειρικά ευρήματα που αναδεικνύουν τη δυνατότητα της να μετασχηματίσει την κατανόηση και την εφαρμογή των υπεραγωγών. Η παρούσα εργασία στοχεύει να συμβάλει στην συνεχιζόμενη αναζήτηση υπεραγωγών που μπορούν να λειτουργούν σε υψηλότερες, πιο πρακτικές θερμοκρασίες, διευρύνοντας τελικά την εφαρμοσιμότητα και τον αντίκτυπό τους στην τεχνολογία και τη βιομηχανία.
description: This thesis explores the synergy between machine learning (ML) and superconductivity, aiming to improve the predictive accuracy of critical temperatures (Tc) in superconductors. By training models on an extensive superconductor data set, insights into the factors affecting Tc are provided. The aim is the dynamic contribution to the synthesis of new superconducting materials and the elucidation of the underlying physical processes of superconductivity. Chapters analyze the history and significance of superconductivity, the methodologies used in ML for predictive modeling, and empirical findings that highlight its potential to transform the understanding and application of superconductivity. This study aims to contribute to the ongoing search for superconductors that can operate at higher, more practical temperatures, ultimately expanding their applicability and impact in technology and industry.
description: Τμήμα Χημικών Μηχανικών, Συνεργαζόμενα Τμήματα, Μηχανολόγων Μηχανικών, Ηλεκτρολόγων Μηχανικών και Μηχανικών Υπολογιστών, Χημείας
Price Control Programs, 1917-71: Origins, Techniques, Effects on Food Prices
Creators: name: Rogers, George B.
name: Rogers, George B.
Publisher: name: Unknown
Year: 1972
Subjects: subject: Agricultural and Food Policy
subject: Demand and Price Analysis
subject: Price control
subject: Methods
subject: Results
subject: Food margins
subject: Marketing margins

description: Inflationary forces leading to the imposition of price controls by the Government in four periods since 1914 are outlined. Basic concepts about price controls are discussed, and pricing standards and pricing techniques are described. Price movements before, during, and after World War I, World War II, the Korean Conflict, and the current Vietnam-related program are analyzed. Control of marketing margins on foods seems to have been successful in the three earlier experiences with price controls.
Nanoscale phase separation in deep underdoped Bi$_{2}$Sr$_{2}$CuO$_{6+δ}$ and Ca$_2$CuO$_2$Cl$_2$
Creators: name: Mistark, Peter
name: Markiewicz, Robert S.
name: Bansil, Arun
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We demonstrate that tunneling spectra in deeply underdoped Bi$_{2}$Sr$_{2}$CuO$_{6+δ}$ (Bi2201) and Ca$_2$CuO$_2$Cl$_2$ (CCOC) provide clear evidence for nanoscale phase separation (NPS), causing the gap to fill with doping rather than close. The phase separation extends over a doping range from half filling to approximately $x\sim 0.09$. Assuming the NPS is in the form of stripes, then the nodal gap -- which we model as a Coulomb gap -- arises from impurity pinning of the charged stripes, ultimately driving a metal-insulator transition.
Morfologia urbana do plano piloto de brasília e a sua imagem para o turista
Creators: name: Leite, Fabiana De Lamare
name: Henz, Aline Patrícia
name: Schäfer, Karine Lise
name: Anjos, Francisco Antonio Dos
name: Anjos, Sara Gadotti Dos
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2010

description: A relação entre sociedade e espaço, assim como a dinâmica imposta por tal relacionamento, tem sido alvo de profundas transformações e da mesma forma, os estudos vem acompanhando tal mudança. O presente artigo tem como objetivo analisar como a relação entre a sociedade e território constrói a imagem da cidade, entendida como um fator de influência na configuração de um destino turístico. O foco de estudo centrou-se no Plano Piloto de Brasília, que para a sua realização foram adotados os seguintes procedimentos metodológicos: levantamento e organização dos dados secundários pesquisados em dissertações de mestrado, teses de doutorado e artigos científicos, de acordo com os três eixos temáticos do projeto: a contextualização social, os elementos morfológicos e a imagem da cidade; trabalhos de campo e entrevistas com visitantes com aplicação da metodologia de leitura dos elementos morfológicos de Lynch (1997) e Panerai (1983); confirmar os dados; mapeamentos e confecção de tabelas para ilustrar e confirmar os resultados obtidos. Como resultados, foi possível entender o papel de sua morfologia no discurso do visitante, através de características destacadas como: grandes distâncias, monumentalidade, cidade dispersa, espaços verdes, organização e setorização. Em síntese, a imagem do Plano Piloto de Brasília a partir dos turistas é de uma cidade conceitual com grandes riquezas a serem observadas, na qual a atratividade está na arquitetura e no urbanismo. Ainda percebeu-se que por mais que tenha sido reconhecida a forma da cidade como fator de atratividade, fica claro a necessidade de estender a discussão sobre a forma da cidade inserida às necessidades turísticas como a sociabilidade de seu ambiente.
description: Revista Turismo & Desenvolvimento, Vol 1 No 13/14 (2010)
FARMERS' PERCEPTION OF SOIL EROSION AND MANAGEMENT PRACTICES. A CASE OF ARBEGONA WOREDA "WOINA-DEGA" AGRO-ECOLOGY ZONE, SIDAMA ZONE, SNNPRS
Creators: name: TEKLU ADULA
Publisher: name: Zenodo
Year: 2013

description: Soil erosion is a complex process that involves the detachment, movement and deposition

of soil particles mainly by wind and water but the problem is not noticed and perceived

by all farmers at the same fashion and level. Thus, the study is aimed to assess the status

of farmers’ perception of soil erosion and management practices in Arbegona woreda

woina-dega agro-ecology zone. A two-stage systematic sampling procedure was

employed to select four sample kebeles and 175 sample household heads to collect

primary data. Interview and observation were also used to collect the relevant data.

Descriptive statistics, chi-square analysis and Likert scale were employed to show the

frequency and percentage distribution of respondents. As the study has been shown the

farmers perception of difficulty for farming, desertification, poverty and economic

backwardness and increase the requirement for fertilizer as the consequences of soil

erosion were found relatively less and not reported by majority of the respondents except

few educated farmers. Concerning the perception to soil erosion management practices,

closure of grazing land, windbreak, fallowing and mulching perhaps are said to have

been the least perceived as management practices used by farmers except those who

attended primary and secondary education.
Casimir-Polder forces in the presence of thermally excited surface modes
Creators: name: Laliotis, Athanasios
name: de Silans, Thierry Passerat
name: Maurin, Isabelle
name: Ducloy, Martial
name: Bloch, Daniel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The temperature dependence of the Casimir-Polder interaction addresses fundamental issues for understanding vacuum and thermal fluctuations. It is highly sensitive to surface waves which, in the near field, govern the thermal emission of a hot surface. Here we use optical reflection spectroscopy to monitor the atom-surface interaction between a Cs*(7D3/2) atom and a hot sapphire surface at a distance ~ 100 nm. In our experiments, that explore a large range of temperatures (500-1000K) the hot surface is at thermal equilibrium with the vacuum. The observed increase of the interaction with temperature, by up to 50 %, relies on the coupling between atomic virtual transitions in the infrared range and thermally excited surface-polariton modes. We extrapolate our findings to a broad distance range, from the isolated free atom to the short distances relevant to physical chemistry. Our work also opens the prospect of controlling atom surface interactions by engineering thermal fields.
Gestão em rede para áreas protegidas: o caso do Parque Natural Municipal do Forte de Tamandaré, Brasil
Creators: name: Estima, Deborah Da Cunha
name: Costa, Carlos Manuel Martins Da
name: Selva, Vanice Santiago Fragoso
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2010

description: A criação de áreas protegidas vem aumentando em todo o mundo, mas os modelos de gestão utilizados muitas vezes não viabilizam a sua efectividade. Neste cenário, os problemas enfrentados para criar e gerir estas áreas dentro dos parâmetros da sustentabilidade, são um grande desafio. Segundo as deliberações legais, a participação das comunidades locais, tem que ser assegurada nos processos de criação e gestão destes espaços protegidos, o que ainda não é uma realidade. Tendo em vista as vantagens que os modelos de gestão baseados em redes podem trazer a estas áreas, a presente investigação procurou analisar o modelo de gestão do Parque Natural Municipal do Forte de Tamandaré, Brasil. Para isso foram analisados as relações estabelecidas entre os actores envolvidos na gestão, acreditando-se que a eficiência e eficácia do funcionamento do Parque dependem de um modelo ideal de gestão e do tipo de estrutura organizacional. Face a fragilidade e ineficiências desta área, a presente investigação demonstra que já existe uma rede de organizações que gerem o Parque, mas que ainda não é efectiva devido a não percepção dos actores sobre os benefícios deste modelo de gestão. Contudo, demonstra que o modelo baseado em redes pode garantir uma gestão participativa e democrática.
description: Revista Turismo & Desenvolvimento, Vol 1 No 13/14 (2010)
From Molecular Dynamics to Brownian Dynamics
Creators: name: Erban, Radek
Publisher: name: arXiv
Year: 2014
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Three coarse-grained molecular dynamics (MD) models are investigated with the aim of developing and analyzing multiscale methods which use MD simulations in parts of the computational domain and (less detailed) Brownian dynamics (BD) simulations in the remainder of the domain. The first MD model is formulated in one spatial dimension. It is based on elastic collisions of heavy molecules (e.g. proteins) with light point particles (e.g. water molecules). Two three-dimensional MD models are then investigated. The obtained results are applied to a simplified model of protein binding to receptors on the cellular membrane. It is shown that modern BD simulators of intracellular processes can be used in the bulk and accurately coupled with a (more detailed) MD model of protein binding which is used close to the membrane.
description: Submitted to Proceedings of the Royal Society A
Highly Efficient Boundary Element Analysis of Whispering Gallery Microcavities
Creators: name: Pan, Leyuan
name: Lu, Tao
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate that the efficiency of the boundary element whispering gallery microcavity analysis can be improved by orders of magnitude with the inclusion of Fresnel approximation. Using this formulation, simulation of a microdisk with wave-number-radius product as large as $kR\approx8,000$ was demonstrated in contrast to a previous record of $kR\approx100$. In addition to its high accuracy on computing the modal field distribution and resonance wavelength, this method yields a relative error of $10%$ in calculating the quality factor as high as $10^{11}$ through a direct root searching method where the conventional boundary element method failed to achieve. Finally, quadrupole shaped cavities and double disks as large as $100 μm$ in diameter were modeled by employing as few as $512$ boundary elements whilst the simulation of such large cavities using conventional boundary element method were not reported previously.
description: 4 pages, 8 figures, journal
ADAPTATION OF STATION DESIGN PARAMENTERS FOR ADDIS ABABA LIGHT RAILWAY IN ETHIOPIAN CONTEXT
Creators: name: KALEAB TESFAYE
Publisher: name: Zenodo
Year: 2018

description: Station is a basic production unit of railway transportation, integrating technical equipment relating to transportation. For the last couple of years investigations have been conducted in Ethiopia in railway site selection. One of that is the Addis Ababa light railway, where two alternative rights of way are seen. That is north- south corridor and East –west corridor of Addis Ababa which is about 34km. An important subject in the planning of a new railway line is the design of the railway stations since they affect the capacity, flexibility and the safety of the rail transport system. The main objective of paper is to investigate how stations can be designed to align with the proposed high speed railway concepts on the line of the light railway based the topography, demography, climatic and economic conditions of the country. The focus in the report is to adapt parameters of station design and investigate how they are affected by the high-speed railway concepts. This paper consists of a literature study similar to the subject. The knowledge gained is then used to suggest possible station platforms, station safety. Some aspects of station design that are investigated in the literature study are platforms, platform safety issues, necessary dimensions of platforms and stations.
The importance of Charge Fluctuations for the Topological Phase in SmB$_6$
Creators: name: Min, Chul-Hee
name: Lutz, P.
name: Fiedler, S.
name: Kang, B. Y.
name: Cho, B. K.
name: Kim, H. -D.
name: Bentmann, H.
name: Reinert, F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The discovery of topologically non-trivial states in band insulators has induced an extensive search for topological phase in strongly correlated electron systems. In particular, samarium hexaboride (SmB$_6$) has drawn much attention as it might represent a new class of condensed matter called topological Kondo insulator. Kondo insulators (KI) can have non-trivial Z$_2$ topology because the energy gap opens at the Fermi energy ($E_F$) by hybridization between an odd- parity renormalized $f$ band and an even- parity conduction $d$ band. However, the characteristics of SmB$_6$ deviate from the conventional KI because its gap is insensitive to doping and pressure. Thus, it is unclear what makes the gap of SmB$_6$ different from that of KI, and how the band inversion features occur. In this manuscript, we demonstrate the importance of charge fluctuations in SmB$_6$. Our angle-resolved photoemission spectroscopy (ARPES) results reveal that with decreasing temperature the bottom of the $d$-$f$ hybridized band at the $\bar{\text{X}}$ point gradually shifts from below to above $E_F$. This shift accompanies a redistribution of spectral weight from the upper to the lower quasiparticle band, and reflects the change in both carrier density and the number of localized $f$ electron. Moreover, because this hybridized band is predicted to have odd parity and to induce a non-trivial $Z_{2}$ topology, we compare our ARPES spectra with theoretical surface band structures and find signatures of topological surface states. Therefore, our results indicate that SmB$_6$ is a charge fluctuating topological insulator having the odd-parity hybridized band above $E_F$ at the $X$ point. This demonstrates that the charge fluctuations do not only drive the insulating bulk phase but also the non-trivial topological phase.
description: 12 pages, 5 figures
Task-related competencies: knowledge, skills, and abilities of the helping professionals
Creators: name: Yılmaz, Olcay
name: Demir, Erman M.
name: Atay, Bünyamin
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: The role of competencies in lifelong education is of great interest across helping professions. However, no known empirical research has focused on exploring the relationship between competencies and job tasks within the context of helping professions. This study sought to establish the competencies (i.e. knowledge, skills, and abilities) that the helping professionals use to perform their jobs. This research utilised an exploratory sequential mixed methods design. In the qualitative phase, focus group interviews were carried out with subject-matter experts to explore the tasks and competencies of helping professionals. Then, building on the findings, an inventory of the tasks and competencies of helping professionals was formed. In the quantitative phase, 819 helping professionals were asked to rate each of the items in this inventory. The results of the exploratory factor analyses yielded a multidimensional structure for both the competencies and tasks. Next, multiple linear regression analyses revealed that different categories of competencies were associated with different task domains. The findings can contribute to a better understanding of lifelong learning within helping professions.
Critical Realist Perspective About Pakistani Men Becoming a Father for the First Time: A Multi-Method Study
Creators: name: Kamwani, Sadaf Sadruddin
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2024
Subjects: Critical Realism Philosophy
Socio-Ecological Model Framework
First-Time Fathers
Perinatal Period
Psychological Distress
Pakistan
Multi-Method Study
Scoping Review
Qualitative Descriptive Research
Paternal Perinatal Psychological Distress
Risk Factors

description: Background: In Pakistan, and globally, first-time fathers may experience psychological distress during their wives' perinatal period. Causal mechanisms for this distress may be enmeshed in their roles within socio-ecological layers where they live. Research Purpose: This study explored the experiences of men in Pakistan becoming fathers for the first time and identified causal mechanisms behind their perinatal experiences in Pakistani society. Methods: A biphasic multi-method research approach was used to explore three research questions: (1) What evidence is available about factors contributing to paternal perinatal psychological distress (PPPD) in first-time fathers? (2) What are the experiences of men becoming first-time fathers in Pakistan? (3) What are the causal mechanisms behind these experiences? Phase 1 was a scoping review of instruments to measure men's psychological distress during the perinatal period. Phase 2, a qualitative descriptive study, was guided by Critical Realism (CR) philosophy and the Socio-Ecological Model (SEM), offering a roadmap for mitigating risk factors for developing PPPD in first-time fathers. Qualitative face-to-face individual interview data was analyzed by integrating Inductive Content Analysis (ICA) technique with CR philosophy and the SEM. Results: The scoping review included 16 studies and identified 56 instruments that measure aspects of men's experiences with PPPD. Causal mechanisms behind perinatal experiences of first-time fathers (n = 8; 4 prenatal, 4 postnatal) in SEM layers in Pakistan include personal values (individual layer), affection for wives (relationship layer), teachings at religious settings (community layer), and norms and policies of hospitals and Pakistani society (societal layer). Conclusions: This study provides evidence of the need to assess, and when appropriate treat, first-time fathers for PPPD during their wives' perinatal period. Mobilizing healthcare professionals, researchers, and policymakers across SEM layers may offer the best hope for recognizing and managing PPPD among first-time fathers, improving health for them, their families, and communities.
Interchange Rings
Creators: name: Edmunds, Charles
Publisher: name: arXiv
Year: 2014
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: An interchange ring,(R,+,*)is an abelian group with a second binary operation defined so that the interchange law (x+y)*(u+v)=(x*u)+(y*v)holds. An interchange near ring is the same structure based on a group which may not be abelian. It is shown that given any group,G,each interchange(near)ring based on that group is formed from a pair of endomorphisms of G whose images commute, and that all interchange (near)rings based on G can be characterized in this manner. To obtain an associative interchange ring, the endomorphisms must be commuting idempotents in the endomorphism semigroup of G. When G is abelian we develop a group theoretic analogue of the simultaneous diagonalization of idempotent linear operators and show that pairs of endomorphisms which yield associative interchange rings can be diagonalized and then put into a canonical form. A best possible upper bound of 4^r can be given for the number of distinct isomorphism classes of associative interchange rings based on a finite abelian group A which is a direct sum of r cyclic groups of prime power order. If A is direct sum of r copies of the same cyclic group of prime power order, we show that there are exactly (r+1)(r+2)(r+3)/6 distinct isomorphism classes of associative interchange rings based on A. Several examples are given and further comments are made about the general theory of interchange rings.
Antidepressant Action of Optogenetic Stimulation of Serotonin-Prefrontal Cortical Projections in Chronically Stressed Female Mice via Hippocampal Modulation
Creators: name: Fuentes Alvarenga, Alberto Francisco
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2024
Subjects: Serotonin
Major Depressive Disorder
Optogenetics

description: Major depressive disorder is twice as prevalent in females. Selective Serotonin Reuptake Inhibitors are the first line of treatment; however, only 30% of patients remit with a 6-8-week latency. We used Unpredictable Chronic Mild Stress model of depression in female mice and optogenetically targeted serotonin projections at medial prefrontal cortex (mPFC) to assess new treatment options. Using transgenic Cre-mediated expression of light-sensitive channelrhodopsin-2 in serotonin neurons, mice were bilaterally stimulated in the mPFC during behavioural testing. UCMS induced anxiety/depression-like phenotypes with reductions of TPH+/FosB+ cells and reduction of serotonin axons, varicosities, and synaptic contacts. Opto-stimulation reversed behavioral effects in tail suspension and increased the chronic activation of serotonin neurons and CA1 pyramidal cells. UCMS induced depression/anxiety-like phenotypes in female mice that can be partly reversed by bilateral opto-stimulation of 5-HT projections to the mPFC, activating serotonin neurons and inducing hippocampal activity, resulting in activation of a mini-circuitry connecting mPFC-hippocampus-DR.
MPEC 2023-G01 : 2023 FN13
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 FN13

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Comment le naming, dans le contexte d'un musée-mémorial en tant que lieu de mémorialisation, influence-t-il la perception et la formation d'une identité collective? Analyse du "The National September 11 Memorial Museum"
Creators: name: Solbreux, Simon
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2024
Subjects: Naming
Identité collective
Mémorialisation

description: Depuis l'Antiquité, les civilisations ont cherché à commémorer les exploits de leurs soldats et figures illustres. Au XIXe siècle, cette volonté s'est intensifiée, se matérialisant par des monuments et une mémoire collective, souvent soutenue par l'État. Progressivement, la commémoration a alors notamment pris la forme d'une « mémoire de pierre » visant à graver les noms des individus. Plus récemment, les musées-mémoriaux sont devenus des outils importants pour commémorer des événements tels que la Seconde Guerre mondiale et la Shoah. Le processus de reconnaissance des victimes, notamment juives, a été marqué par des débats sur leur identification. Ces musées, cristallisant la mémoire des victimes, participent ainsi à la construction d'une identité collective. Dans le climat terroriste actuel, de nouveaux musées-mémoriaux ont vu le jour, suscitant mon intérêt pour l'étude de leur rôle dans la mémoire collective. A travers une méthodologie basée sur une observation participante visant à étudier le « National September 11 Memorial Museum », ce travail met en lumière les mécanismes, notamment émotionnels, qui légitiment l'émergence d'une identité collective « victimaire » à travers l'expérience musicologique.
The second p-class group of a number field
Creators: name: Mayer, Daniel C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11R29, 11R11, 11R16, 11R20, 20D15, 20F12, 20F14

description: For a prime \(p\ge 2\) and a number field K with p-class group of type (p,p) it is shown that the class, coclass, and further invariants of the metabelian Galois group \(G=Gal(F_p^2(K) | K)\) of the second Hilbert p-class field \(F_p^2(K)\) of K are determined by the p-class numbers of the unramified cyclic extensions \(N_i | K\), \(1\le i\le p+1\), of relative degree p. In the case of a quadratic field \(K=\mathbb{Q}(\sqrt{D})\) and an odd prime \(p\ge 3\), the invariants of G are derived from the p-class numbers of the non-Galois subfields \(L_i | \mathbb{Q}\) of absolute degree p of the dihedral fields \(N_i\). As an application, the structure of the automorphism group \(G=Gal(F_3^2(K) | K)\) of the second Hilbert 3-class field \(F_3^2(K)\) is analysed for all quadratic fields K with discriminant \(-10^6
description: 22 pages, 9 tables