693 research outputs found

    Peningkatkan Ecoliteracy Peserta Didik Dalam Konsep Reuse Dan Recycle Melalui Pemanfaatan Mainan Berbahan Limbah Kemasan Sebagai Media Pembelajaran IPS : Penelitian Tindakan Kelas di SMP Negeri 2 Sukaresmi, Kabupaten Pandeglang).

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    Penelitian ini dilatarbelakangi oleh kondisi tentang masih rendahnya kesadaran peserta didik terhadap lingkungan sekitar terutama dalam menjaga keseimbangan dan melestarikan lingkungan yang berkelanjutan. Tujuan penelitian ini adalah untuk meningkatkan ecoliteracy peserta didik dalam konsep reuse dan recycle melalui pemanfaatan mainan berbahan limbah kemasan sebagai media pembelajaran IPS. Penelitian ini menggunakan pendekatan saintifik dalam bentuk model pembelajaran berbasis proyek (project based learning). Metode penelitian yang digunakan dalam penelitian ini adalah Penelitian Tindakan Kelas (clasroom action research) pada siswa kelas VIIA SMP Negeri 2 Sukaresmi, Kabupaten Pandeglang. Indikator ecoliteracy yang digunakan adalah indikator dari The Center for Ecoliteracy (2011) yang didalamnya terdapat aspek pemahaman, sikap, keterampilan dan spirit. Instrumen penelitian meliputi observasi langsung berupa lembar observasi peserta didik, lembar wawancara, lembar kerja peserta didik, alat tes evaluasi dan lembar catatan lapangan yang digunakan untuk memperoleh data melalui catatan dalam bentuk format dan daftar isian yang dilakukan oleh peneliti dan guru mitra sebagai observer. Penelitian tindakan kelas ini dilakukan sebanyak tiga siklus. Hasil penelitian menunjukkan bahwa penerapan model pembelajaran berbasis proyek (project based learning) dapat meningkatkan aspek pemahaman (Head/Cognitive), sikap (Heart/Emotional), keaktifan (Hands/Active), dan semangat (Spirit/Connectional) peserta didik terhadap ecoliteracy. Simpulan penelitian ini dapat dirumuskan bahwa penggunaan konsep reuse dan recycle melalui pemanfaatan mainan berbahan limbah kemasan sebagai media pembelajaran IPS dapat meningkatkan ecoliteracy peserta didik dan dapat dijadikan sebagai salah satu model pembelajaran IPS dalam meningkatkan ecoliteracy peserta didik kelas VII SMP. Para pengambil kebijakan, para pengguna dan peneliti berikutnya diharapkan aktif mendukung dan membantu generasi muda untuk memahami konsep ecoliteracy, mengembangkan dan hidup dalam komunitas yang berkelanjutan.-----------This research is motivated by the condition of the low awareness of students about the environment, especially in maintaining and preserving a sustainable environment. The purpose of this research is to improve the student’s ecoliteracy in the concept of reuse and recycle thrash the utilization of toys made of waste packaging as a media to learn social studies. This research uses a scientific approach in the form of project based learning methods. The research method used in this research is classroom action research in class 7A SMPN 2 Sukaresmi, Pandeglang District. Ecoliteracy indicators that are used are indicators of the center for ecoliteracy which there are aspects of the cognitive, emotional, active and spirit. Research instruments include direct observation of students in the form of observation sheets, questionnaires, worksheets of students, evaluation of test kits and field record sheets used to obtain the data through the records in the form and format of a questionnaire conducted by researchers and teachers as an observer partners. This classroom action research conduct in three cycles. The result showed that the application of project based learning model can improve aspects of cognitive, emotional, active and spirit of students toward ecoliteracy. Conclusions of this research can be formulated that the use of reuse and recycle through the utilization of toys made of waste packaging as a media to learn social studies can improve the student’s ecoliteracy and can be used as one of the learning model in increasing ecoliteracy of grade 7 junior hight school student’s. policy makers, users and subsequent researchers expected to actively support and help young people the understand the concept of ecoliteracy, develop and live in the sustainable communities

    PENGARUH TATA RUANG KANTOR TERHADAP EFISIENSI KERJA PEGAWAI DI DINAS KELAUTAN DAN PERIKANAN KOTA SUBANG

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    Masalah yang dikaji dalam penelitian ini adalah tingkat efisiensi kerja pegawai di Dinas Kelautan dan Perikanan, yang ditandai dengan hasil penilaian kinerja pegawai yang masih rendah. Penelitian ini terdiri dari dua variabel yaitu Tata Ruang Kantor dan Efisiensi Kerja Pegawai. Penelitian ini bertujuan untuk mengetahui gambaran kualitas tata ruang kantor, untuk mengetahui gambaran tingkat efisiensi kerja pegawai dan untuk mengetahui seberapa besar pengaruh tata ruang kantor terhadap efisiensi kerja pegawai. Metode penelitian yang digunakan adalah metode Survey. Teknik pengumpulan data yang digunakan adalah wawancara dan penyebaran angket dengan menggunakkan skala pengukuran rating scale. Teknik analisis data yang digunakkan adalah analisis regresi sederhana. Ukuran sampel dalam penelitian ini adalah 71 orang pegawai di Dinas Kelautan dan Perikanan. Berdasarkan hasil penelitian di Dinas Kelautan dan Perikanan, diperoleh informasi bahwa tata ruang kantor memiliki pengaruh yang positif dan cukup signifikan terhadap efisiensi kerja pegawai. Nilai koefisien korelasi yang diperoleh menunjukkan bahwa terdapat korelasi yang kuat antara tata ruang kantor dan efisiensi kerja pegawai.  The problem that was studied in this research is the level working efficiency of employees at the Department of Marine and Fisheries, which was marked with employee performance appraisal result are still inferior. The research consist of two variables, they spatial and work efficiency office employees. The purpose of this research is to describe the quality of office space, to describe the level of work efficiency of employees and to determine how much influence the office layout to the working efficiency of employees. The method of the research in this study is by using survey method. The Information collection techniques used were interviews and questonnaires using a rating scale measurement. The information analysis technique was used the simple regression analysis. The population in this research are 71 employees at the Department of Marine and Fisheries. Based on the results of research in the Department of Marine and Fisheries, was obtained information that the office layout has a positive and significant influence on work efficiency employee. The correlation coefficient values obtained that indicate strong enough correlation between office layout and working efficiency of employees

    PENERAPAN MODEL PEMBELAJARAN “SALUYU NGAWANGUN JATI MANDIRI” TERHADAP HASIL BELAJAR SISWA PADA KONSEP PENCEMARAN LINGKUNGAN

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    Penelitian ini bertujuan untuk mengetahui peningkatan hasil belajar siswa kelas X IPA SMA Kartika XIX-1 pada materi pencemaran lingkungan setelah menggunakan model pembelajaran berbasis etnopedagogi “Saluyu Ngawangun Jati Mandiri”. Metode penelitian yang digunakan adalah Pre Eksperimental Design dengan design penelitian One-Group Pretest-Posttest. Populasi dari penelitian ini adalah siswa kelas X IPA SMA Kartika XIX-1 Bandung. Sampel pada penelitian ini hanya menggunakan satu kelas yaitu kelas X MIIA 2 dengan jumlah siswa yang diteliti 28 orang. Instrument dalam penelitian ini adalah tes kemampuan yang mengukur ranah kognitif berupa 20 soal pilihan ganda yang disesuaikan dengan pencapaian indikator pembelajaran yang sudah di uji cobakan sebelumnya, lembar kerja peserta didik, lembar observasi Saluyu Ngawangun Jati Mandiri, dan angket. Berdasarkan analisis data diperoleh jumlah benar soal pretest terendah yaitu 7 dan jumlah benar soal pretest tertinggi 12, sedangkan jumlah benar soal posttest terendah yaitu 13 dan jumlah benar soal posttest tertinggi yaitu 18. Setelah peneliti melanjutkan analisis data dengan uji t dan diperoleh dengan hasil uji t signifikan karen

    Increasing power for voxel-wise genome-wide association studies : the random field theory, least square kernel machines and fast permutation procedures

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    Imaging traits are thought to have more direct links to genetic variation than diagnostic measures based on cognitive or clinical assessments and provide a powerful substrate to examine the influence of genetics on human brains. Although imaging genetics has attracted growing attention and interest, most brain-wide genome-wide association studies focus on voxel-wise single-locus approaches, without taking advantage of the spatial information in images or combining the effect of multiple genetic variants. In this paper we present a fast implementation of voxel- and cluster-wise inferences based on the random field theory to fully use the spatial information in images. The approach is combined with a multi-locus model based on least square kernel machines to associate the joint effect of several single nucleotide polymorphisms (SNP) with imaging traits. A fast permutation procedure is also proposed which significantly reduces the number of permutations needed relative to the standard empirical method and provides accurate small p-value estimates based on parametric tail approximation. We explored the relation between 448,294 single nucleotide polymorphisms and 18,043 genes in 31,662 voxels of the entire brain across 740 elderly subjects from the Alzheimer's Disease Neuroimaging Initiative (ADNI). Structural MRI scans were analyzed using tensor-based morphometry (TBM) to compute 3D maps of regional brain volume differences compared to an average template image based on healthy elderly subjects. We find method to be more sensitive compared with voxel-wise single-locus approaches. A number of genes were identified as having significant associations with volumetric changes. The most associated gene was GRIN2B, which encodes the N-methyl-d-aspartate (NMDA) glutamate receptor NR2B subunit and affects both the parietal and temporal lobes in human brains. Its role in Alzheimer's disease has been widely acknowledged and studied, suggesting the validity of the approach. The various advantages over existing approaches indicate a great potential offered by this novel framework to detect genetic influences on human brains

    Effet des extraits de compost sur la croissance mycélienne et l'agressivité du Fusarium oxysporum f. sp. radicis-lycopersici

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    Effect of compost tea on mycelial growth and disease severity of Fusarium oxysporum f. sp. radicis-lycopersici. Simultaneous addition, on culture media, of Fusarium oxysporum f. sp. radicis-lycopersici and compost teas revealed that the latest induced the inhibition of the mycelial growth of the pathogen. This inhibition, noted after an incubation period of about six days at 25°C, was more important when compost teas were enriched in PDB (Potato Dextrose Broth), where it may reach 70% compared to the control. Transplantation of tomato seedlings, previously inoculated by a conidial suspension of F. oxysporum f. sp. radicis-lycopersici, in a container media (peat, perlite or the mixture of the two substrates) treated by compost teas has signifi cantly reduced Fusarium crown and root rot incidence compared to inoculated and untreated control seedlings. Disease incidence is more reduced when tomato inoculated plants are transplanted in peat treated by compost teas; indeed, these plants donʼt show any wilting and present a vigorous root system and a better vegetative growth

    Novel genetic loci associated with hippocampal volume

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    The hippocampal formation is a brain structure integrally involved in episodic memory, spatial navigation, cognition and stress responsiveness. Structural abnormalities in hippocampal volume and shape are found in several common neuropsychiatric disorders. To identify the genetic underpinnings of hippocampal structure here we perform a genome-wide association study (GWAS) of 33,536 individuals and discover six independent loci significantly associated with hippocampal volume, four of them novel. Of the novel loci, three lie within genes (ASTN2, DPP4 and MAST4) and one is found 200 kb upstream of SHH. A hippocampal subfield analysis shows that a locus within the MSRB3 gene shows evidence of a localized effect along the dentate gyrus, subiculum, CA1 and fissure. Further, we show that genetic variants associated with decreased hippocampal volume are also associated with increased risk for Alzheimer’s disease (rg=−0.155). Our findings suggest novel biological pathways through which human genetic variation influences hippocampal volume and risk for neuropsychiatric illness

    Genome-wide association analysis identifies common variants influencing infant brain volumes

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    Genome-wide association studies (GWAS) of adolescents and adults are transforming our understanding of how genetic variants impact brain structure and psychiatric risk, but cannot address the reality that psychiatric disorders are unfolding developmental processes with origins in fetal life. To investigate how genetic variation impacts prenatal brain development, we conducted a GWAS of global brain tissue volumes in 561 infants. An intronic single-nucleotide polymorphism (SNP) in IGFBP7 (rs114518130) achieved genome-wide significance for gray matter volume (P=4.15 × 10−10). An intronic SNP in WWOX (rs10514437) neared genome-wide significance for white matter volume (P=1.56 × 10−8). Additional loci with small P-values included psychiatric GWAS associations and transcription factors expressed in developing brain. Genetic predisposition scores for schizophrenia and ASD, and the number of genes impacted by rare copy number variants (CNV burden) did not predict global brain tissue volumes. Integration of these results with large-scale neuroimaging GWAS in adolescents (PNC) and adults (ENIGMA2) suggests minimal overlap between common variants impacting brain volumes at different ages. Ultimately, by identifying genes contributing to adverse developmental phenotypes, it may be possible to adjust adverse trajectories, preventing or ameliorating psychiatric and developmental disorders

    Multilocus Genetic Analysis of Brain Images

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    The quest to identify genes that influence disease is now being extended to find genes that affect biological markers of disease, or endophenotypes. Brain images, in particular, provide exquisitely detailed measures of anatomy, function, and connectivity in the living brain, and have identified characteristic features for many neurological and psychiatric disorders. The emerging field of imaging genomics is discovering important genetic variants associated with brain structure and function, which in turn influence disease risk and fundamental cognitive processes. Statistical approaches for testing genetic associations are not straightforward to apply to brain images because the data in brain images is spatially complex and generally high dimensional. Neuroimaging phenotypes typically include 3D maps across many points in the brain, fiber tracts, shape-based analyses, and connectivity matrices, or networks. These complex data types require new methods for data reduction and joint consideration of the image and the genome. Image-wide, genome-wide searches are now feasible, but they can be greatly empowered by sparse regression or hierarchical clustering methods that isolate promising features, boosting statistical power. Here we review the evolution of statistical approaches to assess genetic influences on the brain. We outline the current state of multivariate statistics in imaging genomics, and future directions, including meta-analysis. We emphasize the power of novel multivariate approaches to discover reliable genetic influences with small effect sizes

    Workflow reuse in practice: a study of neuroimaging pipeline users

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    Workflow reuse is a major benefit of workflow systems and shared workflow repositories, but there are barely any studies that quantify the degree of reuse of workflows or the practical barriers that may stand in the way of successful reuse. In our own work, we hypothesize that defining workflow fragments improves reuse, since end-to-end workflows may be very specific and only partially reusable by others. This paper reports on a study of the current use of workflows and workflow fragments in labs that use the LONI Pipeline, a popular workflow system used mainly for neuroimaging research that enables users to define and reuse workflow fragments. We present an overview of the benefits of workflows and workflow fragments reported by users in informal discussions. We also report on a survey of researchers in a lab that has the LONI Pipeline installed, asking them about their experiences with reuse of workflow fragments and the actual benefits they perceive. This leads to quantifiable indicators of the reuse of workflows and workflow fragments in practice. Finally, we discuss barriers to further adoption of workflow fragments and workflow reuse that motivate further work
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