523 research outputs found

    Upaya Meningkatkan Hasil Belajar Fisika Melalui Model Pembelajaran Aktif Tipe Group to Group Exchange (Gge) Pada Siswa Kelas Viiic SMP Negeri 33 Makassar

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    Penelitian ini merupakan penelitian tindakan kelas (classroom action research) yang bertujuan untuk meningkatkan hasil belajar fisika siswa kelas VIIIC SMP Negeri 33 Makassar yang berjumlah 36 peserta didik terdiri atas 19 laki-laki dan 17 perempuan. Penelitian ini dilaksanakan dalam 2 siklus terdiri atas empat komponen utama, yaitu: 1). Perencanaan, 2). Pelaksanaan tindakan, 3). Observasi, dan 4). Refleksi. Untuk mengumpulkan data tentang hasil belajar peserta didik digunakan tes hasil belajar dalam bentuk pilihan ganda dan untuk data peningkatan keaktifan peserta didik dalam kelas digunakan lembar observasi. Hasil penelitian menunjukkan pada siklus I skor rata-rata hasil belajar siswa sebesar 64,97 dengan persentase jumlah siswa dalam kategori tinggi sebesar 47,22% sedangkan pada siklus II skor rata-rata hasil belajar siswa sebesar 75,69 dengan persentase jumlah siswa dalam kategori tinggi sebesar 80,56%.Dengan demikian dapat disimpulkan bahwa hasil belajar fisika pada pokok gaya dan penerapannya, energi dan Perubahannya, serta pesawat sederhana siswa kelas VIIIC SMP Negeri 33 Makassar dapat ditingkatkan melalui model pembelajaran aktif tipe Group to Group Exchange. Kata Kunci: pembelajaran aktif, Group to Group Exchange, hasil belajar This research is a classroom action research (classroom action research) that aims to improve student learning outcomes physics class Junior High School 33 Makassar VIIIC the 36 students consisting of 19 men and 17 women. This study was conducted in 2 cycle consists of four major components, namely: 1). Planning, 2). Implementation of the action, 3). Observations, and 4). Reflection. To collect data on learning outcomes of students learning to use the test results in the form of multiple choice and to increase the data active learners in the classroom to use the observation sheet. The results showed in the first cycle an average score of student learning outcomes at 64.97 with the percentage of students in the high category was 47.22%, while in the second cycle average score of student learning outcomes at 75.69 with the percentage of students in a category high of 80.56%. thus it can be concluded that the learning outcomes in basic physics and its application style, energy and change, as well as simple aircraft grade students of SMP Negeri 33 VIIIC Makassar can be enhanced through active learning model type Group to Group Exchange

    Inducible Clindamycin Resistance among Staphylococci Isolated from Burn Patients

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    Clindamycin has been used successfully to treat pneumonia and soft-tissue infections caused by methicillin-resistant Staphylococcus aureus. However, inducible clindamycin resistance has been described as a cause of treatment failure of such infections. A total of 159 staphylococcal isolates from different clinical specimens from burn patients in Tripoli Burn Center were tested for inducible clindamycin resistance by the disk-diffusion induction test. Inducible clindamycin resistance was detected in 66.2% of 65 methicillin-resistant S. aureus isolates and in none of 55 methicillin-sensitive S. aureus, 10 methicillin-resistant coagulase negative staphylococci and 29 methicllin-sensitive coagulase negative staphylococci isolates. In our setting, clindamycin can be used for the treatment of infections due to staphylococci, but we recommend that staphylococci isolates, particularly methicillin-resistant S. aureus, are tested by the D-test before treatment

    Bilateral Concurrent Benign Phyllodes Tumor in a 43-Year-Old Female: A Case Report.

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    Phyllodes tumor is considered a rare form of breast tissue neoplasm that presents as a rapidly growing painless mass. This neoplasm is classified as benign, borderline, or malignant and standard treatment consists of surgical excision with clear margins. The vast majority of reported cases have described the unilateral presentation of this tumor, making bilateral presentation a rare find. Our case describes a 43-year-old Hispanic woman with a history of fibroadenomas who was found to have concurrent benign bilateral phyllodes tumors

    A Process for Co-Designing Educational Technology Systems for Refugee Children

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    There is a growing interest in the potential for technology to facilitate emergency education of refugee children. However, designing in this space requires knowledge of the displaced population and the contextual dynamics surrounding it. Design should therefore be informed by both existing research across relevant disciplines, and from the practical experience of those who are on the ground facing the problem in real life. This paper describes a process for designing appropriate technology for these settings. The process draws on literature from emergency education, student engagement and motivation, educational technology, and participatory design. We emphasise a thorough understanding of the problem definition, the nature of the emergency, and of socio-cultural aspects that can inform the design process. We describe how this process was implemented leading to the design of a digital learning space for children living in a refugee camp in Greece. This drew on involving different groups of participants such as social-workers, parents, and children

    Amorphous Mo₅O₁₄-Type/Carbon Nanocomposite with Enhanced Electrochemical Capability for Lithium-Ion Batteries

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    An amorphous MomO3m−1/carbon nanocomposite (m ≈ 5) is fabricated from a citrate–gel precursor heated at moderate temperature (500 °C) in inert (argon) atmosphere. The as-prepared Mo5O14-type/C material is compared to α-MoO3 synthesized from the same precursor in air. The morphology and microstructure of the as-prepared samples are characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman scattering (RS) spectroscopy. Thermal gravimetry and elemental analysis indicate the presence of 25.8 ± 0.2% of carbon in the composite. The SEM images show that Mo5O14 is immersed inside a honeycomb-like carbon matrix providing high surface area. The RS spectrum of Mo5O14/C demonstrates an oxygen deficiency in the molybdenum oxide and the presence of a partially graphitized carbon. Outstanding improvement in electrochemical performance is obtained for the Mo5O14 encapsulated by carbon in comparison with the carbon-free MoO3. View Full-Tex

    Length-weight relationships for bluefin tuna (Thunnus thynnus L.) caught from the Lybian trap fishery in 1999-2002

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    This paper reports length-weight relationships for the bluefin tuna (Thunnus thynnus L.) in the Mediterranean. The estimated equations that are based on data from the Libyan trap fishery during 1999 to 2002, allow conversions from fork length to round weight.Le présent document fournit una série de rapports lonqueur-poids pour le thon rouge de la Mediterranée. Les équations estimées qui sont basées sur les données des pêcherie libyenne de madrague au long de 1999 a 2002, permettent de convertir la lonqueur à la fourche en poids totale.Este documento presenta una serie de relaciones talla-peso para el atún rojo en el Mediterráneo. Las ecuaciones estimadas que se basan en datos de la pesquería libia de almadraba de 1999 a 2002, permiten realizar conversiones de longitud a la furca a peso vivo

    A checklist for clinical trials in rare disease: Obstacles and anticipatory actions-lessons learned from the FOR-DMD trial

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    Background: Trials in rare diseases have many challenges, among which are the need to set up multiple sites in different countries to achieve recruitment targets and the divergent landscape of clinical trial regulations in those countries. Over the past years, there have been initiatives to facilitate the process of international study set-up, but the fruits of these deliberations require time to be operationally in place. FOR-DMD (Finding the Optimum Steroid Regimen for Duchenne Muscular Dystrophy) is an academic-led clinical trial which aims to find the optimum steroid regimen for Duchenne muscular dystrophy, funded by the National Institutes of Health (NIH) for 5 years (July 2010 to June 2015), anticipating that all sites (40 across the USA, Canada, the UK, Germany and Italy) would be open to recruitment from July 2011. However, study start-up was significantly delayed and recruitment did not start until January 2013. Method: The FOR-DMD study is used as an example to identify systematic problems in the set-up of international, multi-centre clinical trials. The full timeline of the FOR-DMD study, from funding approval to site activation, was collated and reviewed. Systematic issues were identified and grouped into (1) study set-up, e.g. drug procurement; (2) country set-up, e.g. competent authority applications; and (3) site set-up, e.g. contracts, to identify the main causes of delay and suggest areas where anticipatory action could overcome these obstacles in future studies. Results: Time from the first contact to site activation across countries ranged from 6 to 24 months. Reasons of delay were universal (sponsor agreement, drug procurement, budgetary constraints), country specific (complexity and diversity of regulatory processes, indemnity requirements) and site specific (contracting and approvals). The main identified obstacles included (1) issues related to drug supply, (2) NIH requirements regarding contracting with non-US sites, (3) differing regulatory requirements in the five participating countries, (4) lack of national harmonisation with contracting and the requirement to negotiate terms and contract individually with each site and (5) diversity of languages needed for study materials. Additionally, as with many academic-led studies, the FOR-DMD study did not have access to the infrastructure and expertise that a contracted research organisation could provide, organisations often employed in pharmaceutical-sponsored studies. This delay impacted recruitment, challenged the clinical relevance of the study outcomes and potentially delayed the delivery of the best treatment to patients. Conclusion: Based on the FOR-DMD experience, and as an interim solution, we have devised a checklist of steps to not only anticipate and minimise delays in academic international trial initiation but also identify obstacles that will require a concerted effort on the part of many stakeholders to mitigate

    Analysis of sex-ratio by length-class for bluefin tuna (Thunnus thynnus L.) caught from the Lybian trap fishery

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    This article analyzes patterns of bluefin tuna sex-ratio by length-class for the Libyan trap fishery in the Mediterranean Sea.Le présent document analyse les schémas du sex-ratio du thon rouge par classe de tailles pour la pêcherie libyenne de madrague dans la Méditerraneé.Este documento analiza patrones de ratio de sexos del atún rojo por clases de talla para la pesquería libia de almadraba en el Mediterráneo

    A Survey of Open Data Platforms in Six UK Smart City Initiatives

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    This paper presents a comparative analysis of the feasibility studies submitted by six UK cities, (London, Birmingham, Manchester, Glasgow, Bristol and Milton Keynes), by exploring their Open Data resources, common visions of their smart programmes and the themes of their projects. In this research, we distinguish between stored datasets that are accessible via data hubs, and live data that are only accessible via APIs in real-time. The aim of this work is to raise awareness and access of the existing data resources, encourage alignment of data collection and curation among projects with compatible objectives in different cities, and to identify the gaps in coverage that are hampering achievement of the cities' visions. Given that our findings are purely based on stored Open Data, we conclude that the Smart City dream will be only achieved in reality, where those involved in Smart Cities related projects co-operate and share both experiences and resources in order to maximise progress towards the common goal but to minimise duplication of efforts and repetition of the same mistakes

    Clinical trial readiness to solve barriers to drug development in FSHD (ReSolve): protocol of a large, international, multi-center prospective study

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    Background Facioscapulohumeral muscular dystrophy (FSHD) is a dominantly-inherited progressive muscular dystrophy caused by de-repression of the DUX4 gene, which causes disease by a toxic-gain-of-function. As molecularly targeted drugs move from preclinical testing into human trials, it is essential that we validate clinical trial tools and methodology to facilitate the drug development process. Methods/design The primary goal of this study is to hasten drug development for FSHD by validating two novel clinical outcome assessments (COAs) and refining clinical trial strategies. We will perform an 18-month longitudinal study in 220 genetically confirmed and clinically affected participants using our FSHD Clinical Trial Research Network, comprised of 8 sites in the United States, and 3 collaborating sites in Europe. Visits occur at baseline and months 3, 12, and 18. At each visit we will collect: 1) a novel FSHD functional composite COA made up of 18 evaluator-administered motor tasks in the domains of shoulder/arm, hand, core/abdominal, leg, and balance function; and 2) electrical impedance myography as a novel muscle quality biomarker (US sites). Other COAs include 1) Domain 1 of the Motor Function Measure; 2) Reachable workspace; 3) orofacial strength using the Iowa Oral Performance Instrument; 4) lean muscle mass using dual-energy X-ray absorptiometry (DEXA); 5) strength as measured by quantitative myometry and manual muscle testing; and 6) the FSHD Health Index and other patient-reported outcomes. Plasma, DNA, RNA, and serum will be collected for future biomarker studies. We will use an industry standard multi-site training plan. We will evaluate the test-retest reliability, validity, and sensitivity to disease progression, and minimal clinically important changes of our new COAs. We will assess associations between demographic and genetic factors and the rate of disease progression to inform refinement of eligibility criteria for future clinical trials. Discussion To the best of our knowledge, this is the largest collaborative study of patients with FSHD performed in the US and Europe. The results of this study will enable more efficient clinical trial design. During the conduct of the study, relevant data will be made available for investigators or companies pursuing novel FSHD therapeutics
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