335,550 research outputs found

    The Implementation of Cooperative Problem-Solving Rubric Towards Turkish Fourth Grade Students

    Get PDF
    This study aimed to develop an analytical rubric for teachers to observe and evaluate students’ performance in showcasing the cooperative problem-solving process. Thus, a rubric was prepared. Angles to evaluate the student performance were included and a quad rank scale was used in the rubric. Dimensions used in the rubric were based on the PISA 2015 cooperative problem-solving dimensions. The weighted kappa coefficient was calculated for reliability. The validity of the rubric was provided by taking into the opinions of experts. The dimensions used were; common understanding, communication, respect, solving problems together, discussion, and finding common solutions. The weighted kappa coefficient of the rubric was 660 on common understanding; 644 on communication; 835 on respect; 829 on solving problems together; 825 on discussion, and 822 on finding common solutions. Additionally, the rubric was validated by controlling the content, structure, and validity criteria. The results showed that the cooperative problem-solving rubric was reliable and valid to evaluate cooperative problem-solving skills. The rubric presented a comprehensive assessment and scoring for cooperative problem-solving skills

    Early Childhood Predictors of Teen Dating Violence Involvement at Age 17

    Full text link
    The distal relationship between risk factors in childhood and subsequent dating violence in late adolescence has not often been explored using longitudinal data. This study aims to shed light on the problem of dating violence by examining children’s backgrounds at age 7 and the link to the future involvement in dating violence at age 17 using the first and seventh waves of the Zurich Project on the Social Development from Childhood to Adulthood (z-proso, n = 644). The sample consists of 644 multiethnic adolescents (57.14% female, M = 17.47, SD = 0.37), mainly Swiss-born (90%), though more than half of their parents (60%) were born in another country. A latent class analysis was applied to identify three different profiles (a) zero (or minimal) involvement in teen dating violence, (b) perpetrators/victims of controlling behaviors, and (c) perpetrators/victims of controlling behaviors and of physical violence. Participants who were corporally punished and/or victims of bullying at age 7 were significantly more likely to belong to the controlling and physical violence profile than children in the non-violent class. These results suggest a certain chronicity of the effects of violent experiences in early childhood on the patterns of romantic relationships at 17 years old

    PREVALENCE OF ACINETOBACTER BAUMANNII ISOLATED FROM CLINICAL SPECIMENS IN ADAM MALIK HOSPITAL

    Get PDF
    AbstrakAcinetobacter baumannii merupakan spesies Acinetobacter spp. tersering diisolasi darimanusia, dan lebih sering dijumpai pada infeksi nosokomial dibandingkan dengan infeksi dikomunitas. Eksistensi bakteri ini di lingkungan terkait dengan keragaman reservoir, kemampuanmemperoleh gen pembawa sifat resisten antimikroba, dan sifat resisten terhadap pengeringan.Infeksi disebabkan strain A.baumannii yang resisten terhadap banyak antibiotik tidak mudahdikendalikan dan menjadi permasalahan di berbagai negara. Penelitian ini bertujuan untukmengetahui prevalensi A.baumannii dari spesimen klinis di instalasi mikrobiologi klinik RSUPHaji Adam Malik serta pola kepekaannya terhadap berbagai antibiotik. Identifikasi dan ujikepekaan menggunakan mesin otomatis Vitek 2 dengan Advanced Expert System (AES).Penelitian ini menemukan 644/3693 (17,44%) isolat A.baumannii dari berbagai spesimen klinis.A.baumannii paling banyak diisolasi dari spesimen dahak. Penelitian ini menemukan 147/644(23%) bahwa isolat carbapenem-resistent A.baumannii (imipenem dan meropenem). Sebagianbesar isolat sensitif terhadap colistin, amikacin dan tigecycline. Prevalensi A.baumanni yangditemukan pada penelitian ini adalah rendah namun resistensinya tinggi terhadap antibiotikterutama golongan penicillin, cephalosporin dan fluoroquinolon.AbstractAcinetobacter baumannii is the most frequent species of Acinetobacter spp. isolated fromhumans and more common in nosocomial infection than it is in community acquired infection.A.baumannii existence in environment is associated with the diversity of its reservoirs, itscapacity to accumulate genes of antimicrobial resistence, and its resistence to desiccation.Infection of Multidrug resistent (MDR) strain of A.baumannii is not easy to manage and it hasbecome a problem in many countries. The aim of this retrospective study was to investigatethe prevalence of A.baumannii from routine clinical specimens sent to clinical microbiologylaboratory RSUP HAM Medan and its susceptibility pattern to various antibiotics. Identificationand susceptibility testing of A. baumannii was performed by Vitek 2 with Advanced ExpertSystem (AES). A total of 644/3693 (17.44%) A.baumannii isolates were identified from variousclinical specimens. From those isolates, there were 147 (23%) isolates of carbapenemresistentA.baumannii (imipenem and meropenem). A.baumannii mainly isolated from sputumspecimens, and most isolates were highly sensitive to colistin, amikacin and tigecycline.Low prevalence of A.baumannii was found in this study. However, the isolates showed highresistence level to antibiotics, particularly penicillin, cephalosporin and fluoroquinolones

    Genome Wide Association (GWA) Study for Early Onset Extreme Obesity Supports the Role of Fat Mass and Obesity Associated Gene (FTO) Variants

    Get PDF
    Background. Obesity is a major health problem. Although heritability is substantial, genetic mechanisms predisposing to obesity are not very well understood. We have performed a genome wide association study (GWA) for early onset (extreme) obesity. Methodology/Principal Findings. a) GWA (Genome-Wide Human SNP Array 5.0 comprising 440,794 single nucleotide polymorphisms) for early onset extreme obesity based on 487 extremely obese young German individuals and 442 healthy lean German controls; b) confirmatory analyses on 644 independent families with at least one obese offspring and both parents. We aimed to identify and subsequently confirm the 15 SNPs (minor allele frequency $10%) with the lowest p-values of the GWA by four genetic models: additive, recessive, dominant and allelic. Six single nucleotide polymorphisms (SNPs) in FTO (fat mass and obesity associated gene) within one linkage disequilibrium (LD) block including the GWA SNP rendering the lowest p-value (rs1121980; log-additive model: nominal p = 1.13610 27, corrected p = 0.0494; odds ratio (OR)CT 1.67, 95 % confidence interval (CI) 1.22–2.27; OR TT 2.76, 95 % CI 1.88–4.03) belonged to the 15 SNPs showing the strongest evidence for association with obesity. For confirmation we genotyped 11 of these in the 644 independent families (of the six FTO SNPs we chose only two representing the LD bock). For both FTO SNPs the initial association was confirmed (both Bonferroni corrected p,0.01). However, none of the nine non-FTO SNPs revealed significant transmission disequilibrium

    Tobacco addiction in textbooks from 16 countries: physical, psychological and social effects

    Get PDF
    Smoking is a serious society problem that affects persons physically, psychologically and socially. The textbook is strongly rooted in school education and works like a "screen" that links the space between the pupil and the external reality. It provides pupils with handy information, well structured and systematized contents, in order to facilitate them to build their own learning. In this context, a comparative analysis of the information conveyed by textbooks from the 16 countries was carried out. They differ for their geographical distribution and their historical, political and socio-cultural development: 12 European countries (Germany, Cyprus, Estonia, Finland, France, Hungary, Italy, Lithuania, Malta, Poland, Portugal and Romania), 3 from Africa (Morocco, Mozambique and Senegal) and 1 from the Middle East (Lebanon). Results showed that Morocco is the only country which textbooks do not address the smoking issue. Only 11 countries present the three dimensions of tobacco consumption (physical, psychological and social effects), some omit the psychological dimension, others the social one and others both. The Finnish textbook is the one presenting the smoking issue in a rather balanced way. The results show differences in political, cultural and curriculum with regard to the way textbooks of different countries explore the tobacco problematic.European project FP6 “Biohead-Citizen” CIT2-CT-2004-506015. FCT project “Analysis of school textbooks” PTDC/CED/65224/2006. CIFPEC - unidade de investigação 644 da FCT.Fundação para a CiĂȘncia e a Tecnologia (FCT) - projecto “Analysis of school textbooks” PTDC/CED/65224/2006Universidade do Minho. Centro de Investigação em Formação de Profissionais de Educação da Criança (CIFPEC) - unidade de investigação 644 da Fundação para a CiĂȘncia e a Tecnologia (FCT

    Measuring workplace bullying

    Get PDF
    Workplace bullying is increasingly being recognized as a serious problem in society today; it is also a problem that can be difficult to define and evaluate accurately. Research in this area has been hampered by lack of appropriate measurement techniques. Social scientists can play a key part in tackling the phenomenon of workplace bullying by developing and applying a range of research methods to capture its nature and incidence in a range of contexts. We review current methods of research into the phenomenon of bullying in the workplace. We examine definitional issues, including the type, frequency, and duration of bullying acts, and consider the role of values and norms of the workplace culture in influencing perception and measurement of bullying behavior. We distinguish methods that focus on: (a) inside perspectives on the experience of bullying (including questionnaires and surveys, self-report through diary-keeping, personal accounts through interviews, focus groups and critical incident technique, and projective techniques such as bubble dialogue); (b) outside perspectives (including observational methods and peer nominations); (c) multi-method approaches that integrate both inside and outside perspectives (including case studies). We suggest that multi-method approaches may offer a useful way forward for researchers and for practitioners anxious to assess and tackle the problem of bullying in their organizations.CIFPEC/CIEC - Centro de Investigação em Estudos da Criança, UM (UI 644 e 317 da FCT)

    Studies of multiple stellar systems - IV. The triple-lined spectroscopic system Gliese 644

    Get PDF
    We present a radial-velocity study of the triple-lined system Gliese 644 and derive spectroscopic elements for the inner and outer orbits with periods of 2.9655 and 627 days. We also utilize old visual data, as well as modern speckle and adaptive optics observations, to derive a new astrometric solution for the outer orbit. These two orbits together allow us to derive masses for each of the three components in the system: M_A = 0.410 +/- 0.028 (6.9%), M_Ba = 0.336 +/- 0.016 (4.7%), and $M_Bb = 0.304 +/- 0.014 (4.7%) M_solar. We suggest that the relative inclination of the two orbits is very small. Our individual masses and spectroscopic light ratios for the three M stars in the Gliese 644 system provide three points for the mass-luminosity relation near the bottom of the Main Sequence, where the relation is poorly determined. These three points agree well with theoretical models for solar metallicity and an age of 5 Gyr. Our radial velocities for Gliese 643 and vB 8, two common-proper-motion companions of Gliese 644, support the interpretation that all five M stars are moving together in a physically bound group. We discuss possible scenarios for the formation and evolution of this configuration, such as the formation of all five stars in a sequence of fragmentation events leading directly to the hierarchical configuration now observed, versus formation in a small N cluster with subsequent dynamical evolution into the present hierarchical configuration.Comment: 17 pages, 9 figures, Accepted for publication in MNRA

    Exploring Millions of 6-State FSSP Solutions: the Formal Notion of Local CA Simulation

    Full text link
    In this paper, we come back on the notion of local simulation allowing to transform a cellular automaton into a closely related one with different local encoding of information. This notion is used to explore solutions of the Firing Squad Synchronization Problem that are minimal both in time (2n -- 2 for n cells) and, up to current knowledge, also in states (6 states). While only one such solution was proposed by Mazoyer since 1987, 718 new solutions have been generated by Clergue, Verel and Formenti in 2018 with a cluster of machines. We show here that, starting from existing solutions, it is possible to generate millions of such solutions using local simulations using a single common personal computer

    ERISA’s Title IV and the Multiemployer Pension Plan

    Get PDF
    Understanding the dynamics of thin elastic rods that are immersed in fluid is fundamental in explaining many problems that arise in biology, physics and engineering. Solving the coupled system of rod-fluid in 3D is usually very costly, however in case of low Reynolds number, the three-dimensional problem can be reduced a one-dimensional problem on the centerline of the rod. In this thesis we examine the method of regularized Stokeslets which is a numerical algorithm for an elastic rod immersed in viscous, incompressible fluid at zero Reynolds number governed by Stokes equations. In this method, the elastic rod is represented by a space curve corresponding to the centerline of the rod. In addition, an orthonormal triad is varying along the curve, with one vector being tangent to the curve, and the others describing the material twist. The model that is used for the elastic forces based on this, allows for natural configurations for the rods that are far from straight, as described by curvature and torsion. In this way, the basic or equilibrium configuration for the rod can be e.g. a helix. The linearity of Stokes equations allows us to evaluate the linear and angular fluid velocity only at centerline of the rod. We also examine the dependency to the numerical parameters together with the accuracy and convergence properties of the method. As a bench mark, we compare the numerical result of this method to those produced by the non-local slender body method for the case of elastic rods with no intrinsic curvature and twist inside a planar shear flow. We also present the simulation of the extension of helical rods when they are placed within a constant background flow and we provide a fast converging formula for the periodic summation of the fundamental solutions to the Stokes equations.  FörstĂ„elsen för dynamiken hos tunna elastiska fibrer eller stavar inuti en vĂ€tska Ă€r fundamental för att förklara mĂ„nga problem som uppstĂ„r inom biologi, fysik och ingenjörsvetenskap. Att lösa det sammanbundna stav-vĂ€tska systemet i 3D Ă€r vanligtvis vĂ€ldigt kostsamt; men vid ett lĂ„gt Reynoldstal kan det tredimensionella problemet reduceras till ett endimensionellt lĂ€ngs stavens centrumlinje. I det hĂ€r arbetet har vi undersökt metoden med regulariserande Stokeslets, vilken Ă€r en numerisk algoritm som anvĂ€nds pĂ„ elastiska stavar inuti en viskös, inkompressibel vĂ€tska med Reynoldstal noll, modellerad med Stokes ekvation. I den hĂ€r metoden sĂ„ Ă€r den elastiska staven representerad av en kurva i rummet som beskriver stavens centrumlinje. Dessutom anvĂ€nds en ortogonal triad som varierar lĂ€ngs kurvan, och som beskriver materialets vridning. Med den modell som anvĂ€nds för de elastiska krafterna baserat pĂ„ detta, sĂ„ kan stavarnas naturliga konfiguration vara allt annat Ă€n raka, och beskrivas med kurvatur och torsion. PĂ„ detta sĂ€tt kan grundlĂ€get för staven vara tex spiralformad. Lineariteten av Stokes ekvation möjliggör att vi kan berĂ€kna bĂ„de den linjĂ€ra och vinkel-flödeshastigheten endast lĂ€ngs med stavens centrumlinje. Vi undersöker ocksĂ„ hur metoden beror av de numeriska parametrarna och metodens noggrannhets- och konvergens-egenskaper. Som ett riktmĂ€rke jĂ€mför vi de numeriska resultaten av metoden med resultaten producerade av den sĂ„ kallade ”non-local slender body” metoden som anvĂ€nts för elastiska stavar utan naturlig kurvatur och vridning som placeras i ett plant skjuvflöde. Vi presenterar ocksĂ„ simuleringar av utstrĂ€ckning av spiralformade stavar dĂ„ dessa Ă€r placerade i ett konstant bakgrundsflöde, och dessutom sĂ„ tillhandahĂ„ller vi en snabbt konvergerande formel för den periodiska summeringen av de fundamentala lösningarna till Stokes ekvation
    • 

    corecore