270 research outputs found

    Quantify resilience enhancement of UTS through exploiting connect community and internet of everything emerging technologies

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    This work aims at investigating and quantifying the Urban Transport System (UTS) resilience enhancement enabled by the adoption of emerging technology such as Internet of Everything (IoE) and the new trend of the Connected Community (CC). A conceptual extension of Functional Resonance Analysis Method (FRAM) and its formalization have been proposed and used to model UTS complexity. The scope is to identify the system functions and their interdependencies with a particular focus on those that have a relation and impact on people and communities. Network analysis techniques have been applied to the FRAM model to identify and estimate the most critical community-related functions. The notion of Variability Rate (VR) has been defined as the amount of output variability generated by an upstream function that can be tolerated/absorbed by a downstream function, without significantly increasing of its subsequent output variability. A fuzzy based quantification of the VR on expert judgment has been developed when quantitative data are not available. Our approach has been applied to a critical scenario (water bomb/flash flooding) considering two cases: when UTS has CC and IoE implemented or not. The results show a remarkable VR enhancement if CC and IoE are deploye

    UPAYA MENINGKATKAN DISIPLIN GURU DALAM KEHADIRAN MENGAJAR DIKELAS MELALUI PENERAPAN REWARD AND PUNISHMENT DI SMP NEGERI LASIOLAT KABUPATEN BELU

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    Peningkatan mutu pembelajaran disekolah sangat tergantung dari beberapa faktor. Faktor yang sangat penting antara lain adalah penerapan budaya sekolah kearah peningkatan mutu. Budaya sekolah merupakan hal yang positif yang harus dipertahankan dan dilaksanakan oleh semua warga sekolah tanpa merasa terpaksa. Budaya sekolah yang harus dipertahankan salah satunya adalah masalah kedisiplinan, termasuk disiplin para guru dalam kehadiran dikelas pada proses belajar mengajar. Untuk meningkatkan disiplin para guru dapat diupayakan melalui bermacam-macam cara. Dalam Penelitian Tindakan Sekolah (PTS) ini, dicobakan tindakan berupa penerapan Reward and Punishment untuk para guru di SMP Negeri Lasiolat, Kabupaten Belu. Penelitian ini dilaksanakan dalam dua siklus, karena dari hasil penelitian dan analisa data, ternyata pada siklus kedua, kedisiplinan guru dalam kehadiran dikelas pada proses belajar mengajar meningkat dan memenuhi indikator yang telah ditetapkan sebesar 75%. Dari hasil penelitian ini, dapat disimpulkan bahwa untuk meningkatkan disiplin guru dalam kehadiran dikelas pada kegiatan belajar mengajar dapat dilakukan dengan penerapan Reward and Punishment kepada guru

    MELALUI SUPERVISI KELAS UNTUK MENCAPAI PENINGKATAN KINERJA GURU DALAM MELAKSANAKAN PEMBELAJARAN YANG EFEKTIF DI SMP NEGERI LASIOLAT TAHUN PELAJARAN 2020/2021

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    Salah satu tugas kepala sekolah adalah melaksanakan supervisi di sekolah yang menjadi tanggung jawab. Untuk melaksanakan supervisi observasi kelas secara efektif diperlukan ketrampilan konseptual, interpersonal dan teknikal. Oleh karena itu, setiap kepala sekolah harus memiliki dengan menguasai konsep supervisi observasi kelas yang meliputi; pengertian, tujuan dan fungsi, prinsip-prinsip dan dimensi-dimensi substansi supervisi kunjungan kelas. Salah satu upaya yang dilakukan oleh kpala sekolah dalam meningkatkan mutu  pendidikan adalah melalui peningkatan kinerja guru daklam proses belajar mengajar yang dilakukan melalui pembinaan supervisi observasi kelas kepala sekolah. Tujuan dari penelitian tindakan sekolah ini adalah untuk mengetahui sejauh mana peningkatan kinerja guru dalam melaksanakan pembelajaran yang efektif di SMP Negeri Lasiolat melalui supervisi observasi kelas. Dalam penelitian tindakan ini dilakukan dalam 3 siklus, dari hasil tindakan yang dilakukan terbukti dapat meningkatkan kinerja guru dengan mencapai standar ideal. Dari 73,5% paa siklus I, dapat meningkat menjadi 76% pada siklu II dan siklus III meningkat menjadi 85,25%. Hasil penelitian tindakan sekolah ini menunjukan bahwa penerapan supervisi obsevasi kelas kepala sekolah dapat meningkatkan kinerja guru dengan ketuntasan mencapai 100%, tanggapan guru adalah sangat positif terhadap pembinaan yang dilakukan kepala sekolah melalui supervisi observasi kelas

    Only an approach founded on rights and obligations can allow for effective and legitimate public infrastructure provision

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    On Monday 23 March 2015, Dialogue by Design and the UCL Transport Institute co-hosted a seminar, We Need to Talk about Infrastructure, chaired by Jim Steer of Steer Davies Gleave. We posed a simple question: when Government plans to invest £375 billion in infrastructure projects up to 2020, how can this be done with local communities, rather than against them? Elena de Besi argues that only an approach to infrastructure that is founded on the rights and obligations we have as members of a society would allow for the provision of infrastructure that is effective, timely and built on public legitimacy

    EFFECT OF THICKNESS LAYER OF KENAF FIBRE REINFOECED FIBRE GLASS, AGAINST IMPACT OF HYBRID COMPOSITE SANDWICH WITH CORE SENGON

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    The purpose of this research is to know the impact strength of composite structures of sengon laut sawdust. Experimental results show that the impact toughness of sandwich composite will increase as the thickness of composite sandwich skin increases. The impact failure is due mostly to the shear failure of the core. Brittle specimen failure occurs on the sandwich composites structured with skin and core manufactured with the same thickness of 5 mm. This brittle sandwich composite has a flat cross section on both sides of the fault. The shear failure of the cores occurs in samples with 2 mm thick, 3 mm, 4 mm thick, and 10 mm thick core. In some samples, the shear failure of the cores is accompanied by cracks on the core so that the sandwich composite is broken in several parts. The highest value of absorption energy and the highest impact strength is found on thick composite sandwich variation of 10 mm thick with 4 mm thickness of 2,7860 J and 0,01032 J/mm2

    FACTORS ASSOCIATED WITH THE SUCCESSFUL TRANSITION TO PRIMARY SCHOOL

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    The transition of children from preschool to primary school is considered one of the most critical periods of childhood. For this reason, in recent years, great emphasis has been given on children’s successful entrance in primary education. The purpose of this paper is to record the opinions of Greek teachers on which children are more likely to experience difficulties in their transition to the next educational level. The survey was carried out on a sample of 1,602 teachers from the entire Greek educational territory. The tool that was used was a questionnaire of closed-ended questions. It was also analyzed how their responses varied according to their job position (preschool teachers, primary school teachers and school directors). Teachers believe that the most important factors that are related to the successful transition of children to primary school include the socio-emotional development and the interpersonal relationships of children in preschool, their good relations with teachers, their ability to follow the rules of school, but also parents' trust towards teachers.  Article visualizations

    FACTORS ASSOCIATED WITH THE SUCCESSFUL TRANSITION TO PRIMARY SCHOOL

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    The transition of children from preschool to primary school is considered one of the most critical periods of childhood. For this reason, in recent years, great emphasis has been given on children’s successful entrance in primary education. The purpose of this paper is to record the opinions of Greek teachers on which children are more likely to experience difficulties in their transition to the next educational level. The survey was carried out on a sample of 1,602 teachers from the entire Greek educational territory. The tool that was used was a questionnaire of closed-ended questions. It was also analyzed how their responses varied according to their job position (preschool teachers, primary school teachers and school directors). Teachers believe that the most important factors that are related to the successful transition of children to primary school include the socio-emotional development and the interpersonal relationships of children in preschool, their good relations with teachers, their ability to follow the rules of school, but also parents' trust towards teachers

    Mesenchymal progenitor cells in human dental pulp: purification and characterisation

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    INTRODUCTION: Characterising the dental pulp perivascular cells will allow understanding whether these blood vessel associated cells have tissue regenerative potential that can be used for craniofacial regeneration, including bone, nerve, and tooth repair. Perivascular cells (pericytes and adventitial cells) can be purified from multiple human organs including placenta, bone marrow, pancreas, fat and muscle, and exhibit in culture and in vivo multilineage mesodermal developmental potential, implying the perivascular origin of the elusive, culture-derived mesenchymal stem cells (MSCs). Perivascular cells are ubiquitous in the organism and their developmental potential is partially imprinted by their tissue of origin. Pericytes in the dental pulp, which are deriving from primary or permanent teeth, originate from migrating cranial neural crest cells, which, theoretically, could exhibit superior potential to regenerate neural tissue. To test this, my aim was to characterise dental pulp cells and to evaluate their regenerative capacity. MATERIAL AND METHODS: To achieve this goal, we identified and isolated perivascular cells present in the human dental pulp. Dental pulp tissue was isolated from healthy third molar teeth from adults younger than 30 years old. Firstly, immunohistochemistry was performed to determine the presence of cell surface markers on dental pulp pericytes and adventitial cells using markers such as αSMA, PDGFRβ, LepR, CD107a, CD146, NG2 and CD34. Blood vessels were next characterised using MSC markers such as CD44, CD90, and CD29 and endothelial cell markers CD54, CD34, UEA-1, and vWF on pulp sections by immunofluorescence microscopy. Secondly, purification of dental pulp perivascular cells was performed using flow cytometry, followed by culturing and differentiation assays towards osteogenic, adipogenic and neurogenic cell lineages. RESULTS: We found that the phenotype of pericytes in the dental pulp in vivo is similar to that of pericytes in other human organs previously documented. They express CD146, ALP and PDGFRβ and lack endothelial cell markers such as CD34, vWF, CD54 or UEA-1. Importantly, we also found that pericytes are heterogeneous and can be further discriminated based on NG2, αSMA and LepR that coincide with a particular blood vessel type or blood vessel diameter. For example, αSMA is mainly expressed in microvascular pericytes and occasionally in capillaries, similar to LepR. NG2 is not expressed in venules but it is expressed in capillaries and arterioles. In contrast, MSC markers CD90, CD44, and CD29 were expressed on all pericytes suggesting that MSCs reside in heterogeneous perivascular niches. Dental pulp mesenchymal stromal cells were next derived from CD146+CD34-CD56-CD45- pericytes or NG2+ and NG2- pericyte subsets and from CD146-CD34+CD56-CD45- adventitial cells, another perivascular cell source of MSCs located around large vessels. Our data show that, similar to MSCs, all perivascular cell subsets we purified were able to adhere to plastic dish, to expand in culture, and to efficiently accumulate calcium deposits upon osteogenic induction, reminiscent of bone development. However, most of cell lines tested were not adipogenic with the exception of rare cells in the NG2+ pericytes subset. Indeed, lipid droplets were consistently found accumulating only in these purified pericytes from 14 days onwards, albeit at a low frequency. Finally, we discovered that, in situ, neural cells, positive for CD56 and vimentin, share markers with pericytes such as NG2 and CD146. We also found that in vitro, our perivascular cell-derived mesenchymal stromal cell lines express tubulin β III upon neuronal induction although these results require further confirmation. CONCLUSIONS: We documented the molecular signature of pericytes in the human dental pulp. We demonstrated that perivascular cell subsets can be prospectively purified to homogeneity and that perivascular cell-derived stromal cell cultures can be established in vitro. Intriguingly, our in vitro MSC functional assays showed that these cells are not multipotent, and thus are not genuine MSCs. They are, in contrast, very potent bone progenitors with a low frequency of arterial pericytes being adipogenic. Importantly, we here showed a marker overlap between neural cells and pericytes. Whether these cell types are developmentally linked remains to be established

    PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE NUMBERED HEAD TOGETHER TERHADAP HASIL BELAJAR PESERTA DIDIK KELAS V PADA TEMA VI CITA-CITAKU DI SDN OEBA 3 TAHUN AJARAN 2022/2023

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    Tujuan dalam penelitian ini (1)  untuk mengetahui penerapan model pembelajaran kooperatif tipe Numbered Head Together (NHT) pada peserta didik kelas V pada tema VI cita-citaku di SD Negeri Oeba 3, (2) untuk mengetahui peningkatan hasil belajar peserta didik kelas V SD Negeri Oeba 3 melalui penerapan model pembelajaran Numbered Head Together (NHT) pada mata pelajaran PKn materi menjelaskan arti dan makna simbol-simbol sila dalam pancasila.  Penelitian ini merupakan jenis penelitian tindakan kelas menggunakan beberapa tahap antara lain : perencanaan, pelaksanaan tindakan, observasi dan refleksi. Dengan subyek penelitiannya adalah peserta didik kelas V SD Negeri Oeba 3 dengan jumlah 20 peserta didik. Teknik pengumpulan data yang digunakan dalam penelitian ini adalah observasi, tes dan instrument yang digunakan adalah lembar observasi dan tes serta analisis data yang digunakan adalah hasil belajar ranah kognitif, ranah afektif dan ranah psikomotorik. Berdasarkan hasil penelitian dapat diambil kesimpulan bahwa hasil belajar peserta didik mengalami peningkatan setelah diterapkannya Model Pembelajaran   Numbered Head Together (NHT) pada mata pelajaran PKn materi menjelaskan arti dan makna simbol-simbol sila dalam pancasila. Hal ini dapat dilihat dari hasil belajar peserta didik siklus I diperoleh presentase ketuntasan belajar peserta didik 35% dengan nilai rata-rata 80 dengan jumlah peserta didik yang tuntas 4 orang. Sedangkan pada siklus II diperoleh presentase ketuntasan hasil belajar peserta didik 90%  dengan nilai rata-rata 95 dengan jumlah peserta didik tuntas 18 orang. Dari siklus I ke siklus II mengalami peningkatan dan dikatakan sudah mencapai indikator keberhasilan. Dengan demikian penelitian tindakan kelas ini berhasil, sehingga peneliti menyatakan bahwa penerapan dan penggunaan model pembelajaran Numbered Head Together (NHT) dapat meningkatkan hasil belajar peserta didi
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