4 research outputs found

    Pengaruh Teknik Prompting dalam Meningkatkan Kemampuan Speech Building Anak Tunarungu Di SLBN Seduri Kabupaten Mojokerto

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    ABSTRAK   Evasari, Heavy. Pengaruh Teknik Prompting dalam Meningkatkan Kemampuan Speech Building Anak Tunarungu Di SLBN Seduri Kabupaten Mojokerto. Skripsi, Jurusan Pendidikan Luar Biasa, Fakultas Ilmu Pendidikan, Universitas Negeri Malang. Pembimbing: (I) Prof. Dr. Mohammad Efendi, M.Pd, M.Kes, (II) Dr. Henry Praherdhiono, M.Si. Kata Kunci: prompting, speech building, tunarungu Komunikasi merupakan hambatan bagi tunarungu, terutama untuk berkomunikasi lisan. Untuk mengurangi dampat hambatan tersebut, tunarungu harus dilatih komunikasi lisan atau oral. Oral memiliki beberapa tahapan, tahapan pertama yang harus dikuasai tunarungu usia rendah adalah speech building (pembentukan bahasa/kata). Solusi yang paling efektif untuk meningkatkan kemampuan speech building dapat dilatih menggunakan teknik prompting. Teknik yang memberikan instruksi dan penguatan ini bertujuan agar individu melakukan sesuatu yang ditargetkan dengan benar. Instruksi tersebut berupa prompt lisan, model, fisik dan isyarat. Penelitian ini memiliki tujuan yaitu (1) mendeskripsikan kemampuan speech building anak tunarungu sebelum diberi perlakuan, (2) mendeskripsikan kemampuan speech building anak tunarungu setelah diberi perlakuan, (3) menganalisis pengaruh teknik prompting terhadap peningkatan kemampuan speech building anak tunarungu di kelas 3 SLB Negeri Seduri Kabupaten Mojokerto. Rancangan penelitian ini menggunakan rancangan penelitian quasi eksperimen dengan desain time series design. Pengujian hipotesis dalam penelitian ini menggunakan uji rangking-bertanda wilcoxon. Instrumen yang digunakan dalam penelitian ini adalah tes lisan dilengkapi dengan kriteria penilaian dan RPP. Hasil validasi instrumen sebesar 85% dan hasil validasi RPP sebesar 78,75%. Berdasarkan data penelitian, nilai pretest siswa tunarungu memperoleh rata-rata yang rendah yaitu 44,17. Setelah diberikan intervensi berupa taknik prompting, rata-rata siswa mengalami kenaikan. Hasil posttest menunjukkan nilai rata-rata sebesar 74,67. Kemudian pada pengujian hipotesis diperoleh hasil perhitungan table (diambil nilai terkecil) yaitu Thitung sebesar 0, sedangkan harga Ttabel dengan taraf signifikansi 5% sebesar 0. Berdasarkan kaidah keputusan yang telah ditetapkan maka Ho ditolak dan Ha diterima karena Thitung ≤ Ttabel. Berdasarkan data, dapat disimpulkan bahwa hasil dari penelitian ini yaitu teknik prompting berpengaruh secara signifikan terhadap kemampuan speech building siswa tunarungu kelas III di SLB Negeri Seduri Kabupaten Mojokerto. Saran untuk guru maupun sekolah diharapkan teknik prompting ini dapat menjadi alternative untuk meningkatkan kemampuan komunikasi tunarungu di sekolah

    Increasing Speech Building Abilities for Children with Hearing Impairment

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    Students with hearing impairment  have difficulty in hearing due to stiffness in speak organs so that their communication is hindered. The purpose of this research is to increase basic communication skill that is speech building. This research is quasi-experiment using interrupted time series design. The result showed that the value increased by 31,92 from 42,92 in pre-test to 74,88 in post-test. Intervention was in the form of prompting with reinforcement for motivating students. It is concluded that prompting technique significantly  increases the speech building ability of students with hearing impairment. Teachers are suggested to use this technique as an alternative for increasing children communication skill

    Electrical Modeling of Perovskite Solar Cells

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    High-performance perovskite solar cells (PSCs) have attracted great attention from researchers around the world. Rapid researches and developments of PSCs are shown by the increase of its efficiency from 3.8% in 2009 to a new world record of 22.4% in 2017. Hysteresis phenomenon in current density voltage (J-V) is one of the challenges occurring in some specific PSCs that should be overcome to continue the improvement of PSCs. This phenomenon occurs when a voltage is swept with different scan directions from negative to positive value (forward) and positive to negative value (backward). Hysteresis effect results in a different maximum power point on the J-V characteristic leading to under- or overestimation of PSCs efficiency.Furthermore, when the applied voltage is abruptly changed, a transient current density response is introduced implying a capacitive behaviour. Due to this behaviour, there is an indication that PSCs cannot be represented by the conventional equivalent circuit. Thus, the purpose of this project is to investigate hysteresis phenomenon in PSC by electrical modelling. In this project, a PSC sample was fabricated by Solliance Solar Research. Time-resolved J-V measurement was done to obtain more insight of J(t) as a function of applied voltage. The hysteresis phenomenon was analyzed in different voltage scan direction and various scan rates. Simulation of band diagram in dark condition was done to understand working principle of PSC device. Two predicted equivalent circuit of the cell were derived from the simulated band diagram. These equivalent circuit models considered the charge accumulation at the bulk of perovskite and at the interface between charge transport layers and perovskite. Furthermore, two additional equivalent circuit models were proposed to represent the hysteresis effect. J(t) curve fitting of measurement results and simulation was employed to verify the equivalent circuit. This insight might help to get a better understanding of hysteresis effect in PSCs.Electrical Engineering | Sustainable Energy Technolog
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