Renjis Vol. 5 No. 2 Desember 2019

Jurnal Renjis diterbitkan oleh BPNB Kepulauan Riau. Vol. 5 No. 2 Desember 2019 berisi 5 artikel. Artikel-artikel tersebut adalah 1. Nur Alam Saleh - Antara Ramuan dan Mantra dalam Sistem Pengobatan Tradisional Orang Makassar. 2. Sasangka Adi Nugraha - Ambacht Cursus 3. Hendri Purnomo - Taber Laut : Kearifan Lokal Menjaga Keseimbangan Alam di Desa Batu Beriga, Kecamatan Lubuk Besar, Kabupaten Bangka Tengah 4. M. Ali Surakhman - Kepunahan 'Mangendau" Permainan Tradisional Anak Batanghari, Jambi 5. Ayu Sarah Domani - Batik Jambi Era Kontempore

Ubiquitous finite-size scaling features in IV characteristics of various dynamic XY models in two dimensions

Two-dimensional (2D) XY model subject to three different types of dynamics, namely Monte Carlo, resistivity shunted junction (RSJ), and relaxational dynamics, is numerically simulated. From the comparisons of the current-voltage (I-V) characteristics, it is found that up to some constants I-V curves at a given temperature are identical to each other in a broad range of external currents. Simulations of the Villain model and the modified 2D XY model allowing stronger thermal vortex fluctuations are also performed with RSJ type of dynamics. The finite-size scaling suggested in Medvedyeva et al. [Phys. Rev. B 62, 14531(2000)] is confirmed for all dynamic models used, implying that this finite-size scaling behaviors in the vicinity of the Kosterlitz-Thouless transition are quite robust.Comment: 7 pages, 4 pictures, accepted in Physica

Interface depinning versus absorbing-state phase transitions

According to recent numerical results from lattice models, the critical exponents of systems with many absorbing states and an order parameter coupled to a non-diffusive conserved field coincide with those of the linear interface depinning model within computational accuracy. In this paper the connection between absorbing state phase transitions and interface pinning in quenched disordered media is investigated. For that, we present a mapping of the interface dynamics in a disordered medium into a Langevin equation for the active-site density and show that a Reggeon-field-theory like description, coupled to an additional non-diffusive conserved field, appears rather naturally. Reciprocally, we construct a mapping from a discrete model belonging in the absorbing state with-a-conserved-field class to a discrete interface equation, and show how a quenched disorder is originated. We discuss the character of the possible noise terms in both representations, and overview the critical exponent relations. Evidence is provided that, at least for dimensions larger that one, both universality classes are just two different representations of the same underlying physics.Comment: 8 page

Flux noise in high-temperature superconductors

Spontaneously created vortex-antivortex pairs are the predominant source of flux noise in high-temperature superconductors. In principle, flux noise measurements allow to check theoretical predictions for both the distribution of vortex-pair sizes and for the vortex diffusivity. In this paper the flux-noise power spectrum is calculated for the highly anisotropic high-temperature superconductor Bi-2212, both for bulk crystals and for ultra-thin films. The spectrum is basically given by the Fourier transform of the temporal magnetic-field correlation function. We start from a Berezinskii-Kosterlitz-Thouless type theory and incorporate vortex diffusion, intra-pair vortex interaction, and annihilation of pairs by means of a Fokker-Planck equation to determine the noise spectrum below and above the superconducting transition temperature. We find white noise at low frequencies omega and a spectrum proportional to 1/omega^(3/2) at high frequencies. The cross-over frequency between these regimes strongly depends on temperature. The results are compared with earlier results of computer simulations.Comment: 9 pages, 4 PostScript figures, to be published in Phys. Rev.

Lipase production by Fusarium culmorum in solid state fermentation

Fusarium is a large genus of filamentous fungi which cause some of the most important diseases in agricultural and horticultural crops. This fungus is considered to be a useful producer of enzymes from an industrial point of view. In the present study, lipase production by Fusarium culmorum SY6 was investigated under solid-state fermentation (SSF). Among the several agronomic wastes, corn cob hulls and tomato pulp supported the highest yield of lipase (170 and 165 U/g of dry substrate, respectively) after five days of incubation. It was determined that pH 9 and 60°C gave optimumenzyme activity. The F. culmorum SY6 strain grown in SSF in a simple medium proved to be a promising microorganism for lipase production

Automating Spacecraft Analysis: The Era of Ontological Modeling & Simulation

Verification by analysis is a predicted compliance of a design to imposed requirements. The levels of performance specified by performance requirements can be related to Technical Performance Measures (TPM) in a Model-Based Systems Engineering (MBSE) environment, but engineers performing verification by analysis are not commonly versed in professional Systems Engineering (SE) techniques or modeling languages such as SysML. As the formal application of Systems Engineering (SE) results in a diminution of time, effort, and money for large-scale projects, enabling technical engineers performing verification by analysis to contribute to MBSE improvements in the course of their daily work is financially incentivized. Ontologies applied to technical analysis methodologies are shown to improve the quality of verification by analysis activities while adhering to professional organization standards such as the International Council on Systems Engineering (INCOSE) SE Handbook and the National Aeronautics and Space Administration (NASA) standard 7009A: Standard for Models and Simulations

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Empatia na tutoria voluntária de alunos alófonos

Dissertação (mestrado) — Universidade de Brasília, Instituto de Letras, Departamento de Teoria Literária e Literaturas, Programa de Pós-Graduação em Literatura, 2022.Na França, a escola é um direito de toda criança, independentemente de seu status migratório. Toda criança deve ser acolhida em uma escola e é responsabilidade de todo o pessoal administrativo e docente participar da inclusão de crianças alófonas. Algumas escolas têm uma estrutura específica que se encarregará deste novo aluno e fornecerá o ensino com o objetivo principal de dominar o francês como língua de ensino (FLSco), para que esta criança possa ser incluída o mais rápido possível em uma classe regular. Como não é possível dominar a segunda língua (FSL) em um ano letivo, muitas crianças alófonas recorrem a associações para obter ajuda com sua escolaridade. Como a maioria dos voluntários não tem formação para lidar com este tipo específico de público, mal-entendidos na comunicação acabam por interferir na relação mentor-criança, uma relação que deve ser baseada na empatia, uma vez que é responsabilidade do adulto criar as condições certas para que o ato de aprender seja uma verdadeira manifestação do potencial da criança. Neste estudo, buscamos compreender o papel da empatia na tutoria voluntária de crianças alófonas. Medimos o grau de empatia dos voluntários a fim de entender até que ponto a empatia influencia o sucesso acadêmico destes alunos. Como decidimos considerar nesse trabalho sucesso acadêmico como simplesmente “passar de ano”, os resultados são positivos. No entanto, o que surgiu das respostas indicou que a maioria dos voluntários teria algum grau de dificuldade em se comunicar com crianças alófonas. Por esta razão, decidimos oferecer uma formação aos voluntários da associação a fim de aumentar a conscientização sobre as questões linguísticas relativas aos alunos alófonos e propor uma reflexão sobre uma abordagem empática a fim de estabelecer uma relação de confiança com as crianças.In France, school is a right of every child, regardless their migratory status. Every child must be welcomed in a school and it is the responsibility of all administrative and teaching staff to participate in the inclusion of allophone children. Some schools have a specific reception system that will take charge of this new student and provide him/her with instruction with the main objective of mastering French as a language of instruction (FLSco), so that this child can be included in a regular class as soon as possible. Since mastery of the second language (FSL) cannot be achieved in one school year, many allophone children turn to associations for help with their schooling. In associations that provide homework help, volunteers are often asked to accompany students who do not speak French. This can lead to misunderstandings in the relationship between the mentor-child pair, a relationship that must be based on empathy, since it is the adult's responsibility to create the right conditions for the act of learning to be a true manifestation of the child's potential. In this work, we were interested in the role of empathy in the voluntary academic support of allophone students. We measured the degree of empathy of the volunteers in order to understand the extent to which empathy influences the academic success of allophone children. Since success is considered here as the successful completion of a school year, the results are positive. Nevertheless, what emerges from the responses indicates that most of the volunteers would have some degree of difficulty in communicating with the allophone children. For this reason, we decided to propose a training session to the association to sensitize the volunteers to the linguistic issues concerning allophone students and to propose a reflection on an empathetic approach to establish a relationship of trust with the children.En France, l’école est un droit de tout enfant indépendamment de son statut migratoire. Tout enfant doit être accueilli dans un établissement scolaire et il revient à tout personnel administratif et enseignant de participer à l’inclusion des enfants allophones. Certaines écoles disposent d’un dispositif d’accueil spécifique qui prendra en charge ce nouvel élève et lui assurera un enseignement ayant comme principal objectif la maîtrise du français comme langue de scolarisation (FLSco), pour que cet enfant soit inclus le plus rapidement possible dans une classe ordinaire. La maîtrise de la langue seconde (FLS) n’étant pas possible de se concrétiser en une année scolaire, beaucoup d’enfants allophones s’orientent vers des associations en quête d’aide dans leur scolarisation. Dans les établissements associatifs d’aide aux devoirs, les bénévoles sont souvent amenés à accompagner des élèves qui ne maîtrisent pas le français. Cela peut provoquer des malentendus dans la relation entre le binôme mentor-enfant, une relation qui doit se baser sur l’empathie, puisqu’il revient à l’adulte d’aménager les conditions favorables pour que l’acte d’apprendre soit véritablement une manifestation du potentiel de l’enfant. Nous nous sommes intéressés dans ce travail sur le rôle de l’empathie dans l’accompagnement scolaire bénévole des élèves allophones. Nous avons mesuré le degré d’empathie des bénévoles pour comprendre dans quelle mesure l’empathie influence la réussite scolaire des enfants allophones. La réussite étant ici considérée comme achèvement d’une année scolaire avec succès, les résultats sont positifs. Néanmoins, ce qui ressort des réponses indique que la majorité des bénévoles auraient un certain degré de difficulté dans la communication avec les enfants allophones. Pour cela nous avons décidé de proposer une formation auprès de l’association pour sensibiliser les bénévoles autour des enjeux linguistiques concernant les élèves allophones et proposer une réflexion autour d’une approche empathique afin d’établir une relation de confiance avec les enfants.Instituto de Letras (IL)Departamento de Teoria Literária e Literaturas (IL TEL)Programa de Pós-Graduação em Literatur