Miracle-dz/UniFAR-FTUs huggingface dataset:
Double-Frame Current Control with a Multivariable PI Controller and Power Compensation forWeak Unbalanced Networks

The handling of weak networks with asymmetric loads and disturbances implies the accurate handling of the second-harmonic component that appears in an unbalanced network. This paper proposes a classic vector control approach using a PI-based controller with superior decoupling capabilities for operation in weak networks with unbalanced phase voltages. A synchronization method for weak unbalanced networks is detailed, with dedicated dimensioning rules. The use of a double-frame controller allows a current symmetry or controlled imbalance to be forced for compensation of power oscillations by controlling the negative current sequence. This paper also serves as a useful reminder of the proper way to cancel the inherent coupling effect due to the transformation to the synchronous rotating reference frame, and of basic considerations of the relationship between switching frequency and control bandwidth.
Development of a Professional Activity Model on Readiness Preparation to Enhance Student Teachers' Desirable Characteristics for an Industrial Education Program in Agricultural Education

The main purpose of this research was to develop a professional activity model on readiness preparation to enhance student teachers’ desirable characteristics for an industrial education program in agricultural education. It was divided into 4 steps: (1) studying fundamental data; (2) constructing and validating a professional activity model; (3) verifying the professional activity model with 39 student teachers from the Industrial Education Program in Agricultural Education at the King Mongkut's Institute of Technology Ladkrabang; and (4) evaluating the student teachers satisfaction with the model. The collected data were analyzed through qualitative and quantitative data analysis techniques. The results revealed that two aspects of desirable characteristics are: (1) communication and using information technology and (2) learning design by five stages of guidelines in the process of activity arrangement; survey, observation, decision-making, action, and, reflection—the so-called SODAR model. The professional activity model consisted of 7 factors: background, fundamental concepts in development, principles, objectives, structure and content, activity arrangement, and evaluation using the SODAR model which was applied to the factors of activity arrangement and it was verified at a high level of possibilities and appropriateness. The student teachers’ desirable characteristics were higher than before: (1) communication, using information technology, and learning design after participation in the activities were higher at a significant level of . 01; (2) skills in communication, using information technology, and learning design after participation in the activities were higher than those in the set criteria by up to 75 percent at a significant level of . 01; (3) attitudes toward communication, using information technology, and learning design after participating in the activities were higher at the significant level of . 01; and (4) the professional activity model was evaluated as providing a high level of satisfaction.
Perception as stochastic grammar-based sampling on dynamic grahp spaces

espanolEsta tesis estudia y desarrolla tecnicas novedosas que permiten a los robots percibir apropiadamente el entorno de forma autonoma. Para conseguir esto es posible y conveniente usar la informacion del entorno de la que se disponga. Generalmente, dicha informacion queda plasmada en el codigo del robot como construcciones if-then-else dificiles de entender cuando el mundo del robot es considerablemente complejo. Se propone el uso de �Active Grammar-based Modeling� (AGM), una tecnica desarrollada dentro de la tesis, que usa descripciones de muy alto nivel que permiten al desarrollador obtener mas flexibilidad y escalabilidad, asi como reducir el tiempo de desarrollo y la cantidad de errores que se cometen al programar los robots. La solucion propuesta pasa por describir la gramatica del entorno en un lenguaje especifico de dominio que posteriormente se traduce a PDDL, permitiendo usar asi planificadores de Inteligencia Artificial clasicos para decidir que ha de hacer el robot para cumplir sus objetivos y comprobar que las modificaciones que el robot hace al modelo del entorno son validas de acuerdo a la gramatica. Ademas, AGM permite coordinar facilmente diferentes filtros de particulas para su ejecucion simultanea, pudiendo ademas elegir distintos filtros de particulas dependiendo del contexto en el que el robot se encuentre, optimizando asi el sistema perceptivo de los robots. Ademas de dicha tecnica la tesis presenta diferentes algoritmos usados dentro de AGM, asi como varios experimentos relacionados con el modelado activo de entornos de interior usando camaras RGBD. EnglishThis thesis develops and studies novel techniques that allow robots to properly model their environments autonomously. For this purpose it is possible and feasible to use all the available information that robots can use. Generally this information results in if-then-else constructs that are hard to understand then the environments of the robots are considerably complex. It is proposed to use �Active Grammar-based Modeling� (AGM), a new technique developed within this thesis. It uses very high-level descriptions that allow developers to achieve higher flexibility and scalability, as well as reducing the development time and the amount of programming errors. The solution consists on describing the grammar of the environment using a domain-specific language that is compiled into PDDL, allowing AGM-based systems to use classic AI planners to decide what robots should do to achieve their goales and incrementally verify that the model generated is valid according to the grammar described. Moreover, AGM can coordinate different particle filters so they can work simultaneously, allowing to choose the most appropriate filters depending on the context. This enhances the accuracy and effectivenes of the perceptual systems of the robots Along AGM, this thesis also presents the different algorithms used by AGM, as well as different experiment related to active indoor modeling using RGBD cameras.
Intermittent turbulence contributes to vertical diffusion of PM 2.5 inthe North China Plain

Abstract. Heavy particulate pollution events have frequently occurred in the North China Plain over the past decades. Due to high emissions and poor diffusion conditions, issues become increasingly serious during cold seasons. Although early studies have explored some potential reasons for air pollutions, there are few works focusing on the effects of intermittent turbulence. This paper draws upon two typical PM 2.5 (particulate matters with diameter less than 2.5 mm) pollution cases from the winter of 2016–2017. After several days of gradual accumulation, the concentration of PM 2.5 near the surface reached the maximum as a combined result of strong inversion layer, stagnant wind and high ambient humidity and then sharply decreased to a very low level within a few hours. In order to identify the strength of turbulent intermittency, an effective index, called Intermittency Factor (IF), was proposed by this work. The results show that the turbulence during the stage of diffusion is highly intermittent and not locally generated. The vertical characteristics of IF and wind filed confirm the generation and downward transport of intermittent turbulence from the wind shear associated with low-level jets. The intermittently turbulent fluxes contribute positively to the vertical dispersion of particulate matters and improve the air quality near the surface. This work brought up a possible mechanism of how intermittent turbulence affects the diffusion of particulate matters.
A COMBINED BIOMECHANICAL ANALYSIS OF THE FLIP TURN TECHNIQUE

The purpose of this study was to biomechanically describe the front crawl flip turn technique of an elite male swimmer using and integrating dynamometric, kinematical and electromyographic (EMG) data. Surface active bipolar electrodes, two underwater and four surface fixed cameras, and an underwater force plate were used to evaluate the several phases of this turn. It was observed that the turn rotation phase was performed very close to the wall, imposing excessive lower limb joint flexions, and determining a too long contact phase. Those findings presented probable consequences upon the force curve, the pattern of muscular recruitment, and the velocity of the take-off the wall. However the trunk angle at the take-off the wall allowed a good position during the impulse phase. Therefore, this high level swimmer should improve these aspects in order to improve his performance.
Conflict and Accommodation in the Former Soviet Union: The Role of Institutions and Regimes

It is not surprising that the collapse of a multinational empire like the Soviet Union gave rise to political instability and conflicts over territory as this conforms to a pattern set by the historical experience of the fall of other great empires. The contributions in this volume have examined cases of post-Soviet states where there are simultaneous nationand statebuilding dilemmas arising from the problems of new state formation during transition, in particular those of identity, territorial definition, building state capacity, and international recognition. These problems have interacted with and accentuated ethnic or regionalist challenges ‘from below’, and in some cases ‘from outside’. There is an observable trend for post-Soviet states to engage in ‘nationalizing’ projects which have as their goal the recasting of the newly independent state in the mould of the predominant ethnic group. This trend enacts a preference for homogenization and a tendency for discrimination against minorities. The scale and intensity of these ‘nationalizing’ projects have varied across the FSU as the time frame or temporal sequence of certain policies, such as citizenship or language laws, have often revealed marked differences. No single factor from the list of conventional causes of conflict, whether structural, geographical or identity-related, appears to convincingly account for the causation of all post-Soviet conflicts. The contributions in this volume illustrate this wide diversity of factors in the causation and dynamics of post-Soviet conflicts. The significance of the key causative factors – such as the historical legacies and memories of ethnic strife, international conditions, demography and settlement patterns, the degree of societal homogeneity and the nature of cleavage structures, geography, the political economy of transition, institutional engineering, the role of the military/security forces, elite and popular perceptions and practice, and cultural proximity or difference – have varied depending on the case. The contributors have analyzed these diverse conflict cases by focusing on the four underlying questions outlined in the introduction. First, the causes and distinctiveness of the territorial challenges; second, their nature: are they essentially ethnic, regional or driven by some other factors, or indeed some combination of elements? Furthermore, what is the relationship between territorial
NONDEGENERACY OF THE PERIODICALLY FORCED LIÉNARD DIFFERENTIAL EQUATION WITH ϕ-LAPLACIAN

New results on the existence of periodic solutions of a forced Lienard differential equation with ϕ-Laplacian are provided. The method of proof relies on the Schauder fixed point theorem, so some information on the location of the solutions is also obtained, leading to multiplicity results. The flexibility of this approach is tested by comparing our results with some examples taken from the related literature, including the classical pendulum equation.
El currículum escolar y el ejercicio docente ante los desafíos de la multiculturalidad en Portugal

El articulo hace un repaso de la realidad del Sistema Educativo Portugues en relacion con la multiculturalidad. Describe una panoramica historica del proceso de atencion a colectivos inmigrantes en Portugal. Denuncia como este fenomeno era ignorado hasta hace bien poco en las agendas de politica educativa. Defiende que el curriculum, en funcion de como se selecciones y desarrolle, es tanto una herramienta poderosa de inclusion y de justicia, como de todo lo contrario. Describe los implicantes esenciales de hacer una politica educativa y curricular para atender al fenomeno de la multiculturalidad. Defiende la pertinencia de un curriculum contra-hegemonico para alcanzar la justicia curricular. Muestra y argumenta las implicaciones mas relevantes del fenomeno de cara la formacion del profesorado. Concluye apostando por una educacion para la ciudadania democratica en una sociedad multicultural, y defendiendo que la diversidad es un motor de cambio y progreso que hay que atender adecuadamente.
Self-start performance evaluation in Darrieus-type vertical axis wind turbines: Methodology and computational tool applied to symmetrical airfoils

An increased interest in vertical axis wind turbines has been stimulated by the rapid growth of wind power generation and by the need for a smarter electrical grid with a decentralized energy generation, especially in the urban areas. The lift type vertical axis wind turbines (Darrieus wind turbine) performance prediction is a very complex task, since its blades move around the rotor axis in a three dimensional aerodynamic environment that lead to several flow phenomena, such as, dynamic stall, flow separation, flow wake deformations and their natural inability to self-start. These issues can be overcome with the use of several more or less complex solutions, being one of them the development of a blade profile capable of making the wind turbines self-start. This paper focuses on presenting a new methodology for fast development of new blade profiles, for self-start capable Darrieus wind turbines, which is a complex and time-consuming task.
Effect of the 1995-1996 bleaching event on polyp tissue depth, growth, reproduction and skeletal band formation in Montastraea annularis

Polyp tissue depth, skeletal extension rate, reproduction and density band formation were studied in 15 colonies of Montastraea annularis from October 1994 to September 1997 as part of a long-term field study. With the commencement of a bleaching event in September 1995, the effects of bleaching on these biological parameters were examined. Bleaching affected all the parameters investigated, but the speed of recovery of each parameter to pre-bleaching values differed. Tissue depth recovered the fastest, within 4 to 8 wk of regaining normal pigmentation. Once pigmentation and tissue depth had recovered, skeletal growth resumed at its pre-bleaching rate. Reproduction took the longest to recover and reproductive failure occurred in severely bleached colonies 1 yr after bleaching. Even after 2 yr, reproductive output remained reduced in previously bleached colonies when compared with previously unbleached ones, although all colonies had successfully completed gametogenesis and spawning. Among the reproductive parameters measured, gonad size recovered faster than the number of gonads per polyp (i.e. polyps produced a smaller number of full-sized gonads 2 yr after bleaching). In all colonies, bleached and unbleached, the 1995 annual high-density (HD) band, which formed at the time of the bleaching event, appeared more prominent and in some cases wider than the HD bands for the years that preceded and succeeded bleaching. Bleaching reduced skeletal extension rate, and the HD band that formed at the time of the bleaching event was most pronounced in colonies in which skeletal extension rate was reduced for the longest period of time (i.e. severely bleached colonies). In 1996, the year following the bleaching event, colonies that did not complete gametogenesis (i.e. severely bleached colonies) produced no distinct HD band, while those that completed gametogenesis (i.e. mildly bleached colonies) produced a distinct HD band. These findings suggest that an inverse relationship between skeletal extension rate and HD band prominence may occur in Montastraea annularis, and that the failure of severely bleached colonies to produce a HD band in 1996 might be related, not to bleaching, but rather to the lack of gonad development and spawning in these colonies.
A Forecasting Model for Japan's Unemployment Rate

This note aims to achieve a parsimonious fractionally-integrated autoregressive and moving average (ARFIMA) model for recent time series data of Japan's unemployment rate. A brief review of the ARFIMA model is provided, leading to econometric modeling of the data in the ARFIMA framework. It is demonstrated that the preferred ARFIMA model is a satisfactory representation of the data and is useful as a forecasting device.
Flavonoid Accumulation Behavior in Response to the Abiotic Stress: Can a Uniform Mechanism Be Illustrated for All Plants?

This review concentrates on two aspects of how total flavonoid content and individual flavonoid compounds change with the perception of environmental stress and the subse quent changes in those metabolites after post-harvest conditions are of the main points of the study. Hereby, along with this study, the flavonoid synthesis or their accumulation with their importance in plants and then in humans is briefly described. According to the literature cited herein, it seems that a universal mechanism concerned with flavonoid accumulation in response to the abiotic stress factors cannot be illustrated. Flavonoid accumulation exhibits different reactions to the different stressors. Flavonoid accumula tion behavior not only varies depending on the developmental stage, species and even cultivars of the same species but also post-harvest processes.
Supply chain coordination under retail competition and advertising dependent demand

: Received 1 June 2011 Received in revised form November, 26, 2011 Accepted 14 December 2011 Available online 3 January 2012 Supply chain coordination as an effective tool plays an important role in improving supply chain performance. In this article, a two-level supply chain with one manufacturer and two retailers is considered. The order quantity that retailers are faced with depends on the amount of advertisements and both retailers compete with each other on advertising. The Stackelberg game is established between manufacturer and retailers such that the manufacturer and the retailers play the leader and the follower roles, respectively. First, the manufacturer determines the wholesale prices for retailers and instead, the retailers determine the order quantity and advertising level, simultaneously. The manufacturer produces one kind of product and delivers it to retailers before the beginning of selling season. Retailers can affect the order quantity regarding the demand dependency on advertising level through the incurred costs from the advertising. In this paper, we show that we can achieve the desirable supply chain coordination through using combined quantity discount and advertising cost sharing contracts. We also consider the win-win situation for all the members of the supply chain.
Data exchange architecture for the development of mobile applications that support eHealth systems interoperability: a case of Tanzania

Electronic Health (eHealth), especially in the form of electronic health records (eHRs), has proved to be helpful in health care services both in urban and remote areas. However, many of the systems are fragmented and work independently. Therefore, apart from their benefits, these systems are stand alone and as such they face some operational challenges. One of which is interoperability among the eHRs. Early efforts to interoperate eHealth systems, suggest that a single mobile application that can access multiple integrated eHRs is among the viable solutions on the way to eHRs interoperability. The proposed data exchange approach offers a mechanism to integrate a single mobile application with multiple eHRs while mitigating the interoperability problem. The design work builds on the results of a survey previously done to collect preliminary requirements of the data exchange system. System design techniques were used to design this system. In this paper, an architectural system design of an eHealth data exchange that can mitigate the interoperability challenge is presented.
Evaluation of Non-Saccharomyces Cerevisiae Strains Isolated from Sea Water Against Inhibitory Compounds for Ethanol Production

An important parameter in industrial bioethanol fermentation is the resistance of yeast to osmotic pressure and inhibitor compounds. Aureobasidium pullulans LBF-3-0074 and Schwanniomyces etchellsii LBF-3-0034 are reported capable to produce ethanol. LBF-3-0034 and LBF-3-0074 are yeast strains isolated from Bali and Lombok sea water. This study aimed to evaluate characteristics of both LBF-3-0034 and LBF-3-0074 strains under the effects of glucose and inhibitor compounds. Both strains were allowed to consume glucose up to 120 mM. Then, these strains were grown with the present of several inhibitors, i.e. 5-hydroxymethyl-2-furaldehyde (5-HMF), furfural, acetic acid, formic acid, and levulinic acid. Results showed that the two yeast strains studied could grow and ferment the sugars under both osmotic and inhibitor stress conditions. As conclusion, Schwanniomyces etchellsii LBF-3-0034 and Aureobasidium pullulans LBF-3-0074 are potential for direct fermentation of lignocellulosic hydrolysate to ethanol.
Unconventional superconducting phases for the two-dimensional extended Hubbard model on a square lattice

Author(s): Huang, WM; Lai, CY; Shi, C; Tsai, SW | Abstract: We study the phase diagram of the extended Hubbard model on a two-dimensional square lattice, including on-site (U) and nearest-neighbor (V) interactions, at weak couplings. We show that the charge-density wave phase that is known to occur at half filling when 4VgU gives way to a d xy-wave superconducting instability away from half filling, when the Fermi surface is not perfectly nested, and for sufficiently large repulsive V and a range of on-site repulsive interaction U. In addition, when nesting is further suppressed and in the presence of a nearest-neighbor attraction, a triplet time-reversal breaking (px+ipy)-wave pairing instability emerges, competing with the dx2-y2 pairing state that is known to dominate at fillings just slightly away from half. At even smaller fillings, where the Fermi surface no longer presents any nesting, the (p x+ipy)-wave superconducting phase dominates in the whole regime of on-site repulsions and nearest-neighbor attractions, while d xy pairing occurs in the presence of on-site attraction. Our results suggest that zero-energy Majorana fermions can be realized on a square lattice in the presence of a magnetic field. For a system of cold fermionic atoms on a two-dimensional square optical lattice, both an on-site repulsion and a nearest-neighbor attraction would be required, in addition to rotation of the system to create vortices. We discuss possible ways of experimentally engineering the required interaction terms in a cold atom system. © 2013 American Physical Society.