PENGARUH PENGGUNAAN MODEL PEMBELAJARAN KOOPERATIF TIPE STAD TERHADAP MOTIVASI DAN HASIL BELAJAR SISWA PADA POKOK BAHASAN PENJUMLAHAN DAN PENGURANGAN BILANGAN BULAT DI KELAS VII A SMP KANISIUS KALASAN YOGYAKARTA TAHUN PELAJARAN 2012-2013

Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan model pembelajaran kooperatif tipe STAD dalam menumbuhkan motivasi belajar siswa dan peningkatan hasil belajar siswa pada pokok bahasan penjumlahan dan pengurangan bilangan bulat di kelas VII A SMP Kanisius Kalasan Yogyakarta tahun pelajaran 2012-2013. Subyek penelitian ini adalah siswa kelas VII A SMP Kanisius Kalasan Yogyakarta tahun pelajaran 2012-2013. Penelitian ini menggunakan jenis penelitian deskriptif kualitatif dan kuantitatif. Instrumen penelitian yang digunakan dalam pengumpulan data terdiri dari: (1) Lembar observasi / pengamatan motivasi belajar siswa, (2) Angket motivasi belajar siswa, (3) Lembar wawancara motivasi belajar siswa, (4) Tes hasil belajar siswa yang terdiri dari pre test, kuis dan post test. (5) Alat dokumentasi. Data hasil observasi / pengamatan dan angket motivasi belajar siswa dianalisis secara kuantitatif dengan menentukan skor total dan persentase yang diperoleh masing-masing siswa, kemudian berdasarkan hasil persentase tersebut ditentukan kriteria motivasi belajar siswa secara individu maupun keseluruhan. Data hasil wawancara dan dokumentasi dianalisis secara deskriptif kualitatif sebagai penguatan dari hasil observasi / pengamatan dan angket motivasi belajar siswa. Data tes hasil belajar yaitu hasil pre test dan post test yang dianalisis menggunakan uji t untuk mengetahui peningkatan hasil belajar siswa. Hasil penelitian menunjukkan bahwa (1) Penggunaan model pembelajaran kooperatif tipe STAD memiliki pengaruh yang tinggi dalam menumbuhkan motivasi belajar siswa dan (2) Penggunaan model pembelajaran kooperatif tipe STAD berpengaruhj dalam meningkatkan hasil belajar siswa. Kata kunci: STAD, motivasi belajar, hasil belajar, penjumlahan & pengurangan bilangan bulat

Pengembangan Media Mobile Learning Berbasis Android Untuk Siswa SMA Kelas X Pada Materi Ikatan Kimia

This study aims to: (1) Produce android applications as a support source for learning chemistry in class X. (2) Determine the feasibility of android applications. The research and development design uses the Borg & Gall development design (R&D) model, there are 10 steps that must be taken in development research. The ten steps were simplified by Ghozi into four steps, namely: (1) preliminary research, (2) design stage, (3) development stage and (4) testing phase. Data collection techniques were carried out by observation, interviews and questionnaires. The testing phase is carried out by validating the product by media experts and material experts, testing on the first user (teacher) and testing on the end user (student). The data analysis technique used is descriptive analysis technique. The results of this study are: (1) an android application model for appropriate learning media on chemical bonding material which includes: preparation, material mapping, development, and validation; (2) the feasibility of an android application for appropriate learning media on chemical bonding material. Based on the converted average assessment with a percentage range of 0% -100%, it is obtained that the value of media experts is assessed from 32 points of assessment indicators, a score of 103 and a percentage of 78.33% is included in the "feasible" category, the assessment by material experts is assessed from 23 The assessment indicator items obtained a score of 73 and a percentage of 79.35% included in the "feasible" category, the assessment by the first user (teacher) which was assessed from 32 assessment indicator items obtained a score of 168 and a percentage of 97.02% was included in the category " feasible "and the results of the assessment by the end user (students) assessed from 22 points of assessment indicators obtained an average total score of 70.1 and a percentage of 79.7% included in the" feasible "category.Penelitian ini bertujuan untuk: (1) Menghasilkan aplikasi android sebagai sumber pendukung belajar kimia di kelas X. (2) Mengetahui kelayakan aplikasi android. Rancangan penelitian pengembangan menggunakan model rancangan pengembangan (R&D) Borg & Gall,  adapun 10 langkah yang harus ditempuh dalam penelitian pengembangan. Kesepuluh langkah tersebut disederhanakan oleh Ghozi menjadi empat langkah, yaitu: (1) penelitian pendahuluan, (2) tahap perancangan, (3) tahap pengembangan dan (4) tahap pengujian. Teknik pengumpulan data dilakukan dengan observasi, wawancara dan angket. Tahap pengujian dilakukan dengan validasi produk oleh ahli media dan ahli materi, pengujian pada pengguna pertama(guru) dan pengujian pada pengguna akhir(siswa). Teknik analisis data yang digunakan adalah teknik analisis deskriptif. Hasil penelitian ini adalah: (1) model aplikasi android untuk media pembelajaran yang tepat pada materi ikatan kimia yang meliputi: persiapan, pemetaan materi, pengembangan, dan validasi; (2) kelayakan aplikasi android untuk media pembelajaran yang tepat pada materi ikatan kimia. Berdasarkan penilaian rata-rata yang dikonversi dengan rentang persentase 0% -100% diperoleh nilai dari ahli media dinilai dari 32 butir indikator penilaian diperoleh skor sebesar 103 dan persentase 78,33% termasuk dalam kategori “layak”, penilaian oleh ahli materi dinilai dari 23 butir indikator penilaian diperoleh skor sebesar 73 dan persentase sebesar 79,35% termasuk dalam kategori “layak”, penilaian oleh pengguna pertama (guru) yang dinilai dari 32 butir indikator penilaian diperoleh skor sebesar 168 dan persentase sebesar 97,02% termasuk dalam kategori “layak” dan hasil penilaian oleh pengguna akhir (siswa) dinilai dari 22 butir indikator penilaian diperoleh rata-rata total skor sebesar 70,1 dan persentase sebesar 79,7% termasuk dalam kategori “layak”

Pengaruh Konten Instagram Dan Testimoni Terhadap Keputusan Pembelian Pakaian Bekas Pada @Yoiwoy.Size Thriftshop Jombang

This study aims to determine the effect of Instagram content and testimonials on purchasing decisions. The object of this research is @yoiwoy.size Thriftshop Jombang. The results of the data analysis test show that the t test produces a t count for the Instagram content variable on purchasing decisions of 3.169 and the t count results for testimonials on purchasing decisions of 1.933, with a significance level of 5% or 0.05, while those contained in the t table attachment are 1.661. So it can be concluded that the t value is 3.169> t table 1.661 and 1.933> t table 1.661 with a significance value of 0.05 so it can be said that there is a significant influence between Instagram content and testimonials on customer loyalty or it can be said that the hypothesis is accepted. The F test resulted in an fcount of 42.934 with a significance level of 0.000. From the results of the F test, the researcher knows that the value of F count 42.934> F table 3.09, therefore the results of the anova hypothesis can be accepted because all independent variables (free) are feasible to explain the dependent variable (bound) analyzed by the researcher. The conclusion of this study is that the independent variables, namely Instagram content and testimonials, partially and simultaneously affect the dependent variable, namely purchasing decisions

Understanding the Epidemiology of Heart Failure to Improve Management Practices: An Asia-Pacific Perspective

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Sol-derived Hydroxyapatite Ddip-coating of a Porous Ti6Al4V Powder Compact

A sintered porous Ti6Al4V powder compact with a mean pore size of 63 µm and an average porosity of 37±1% was dip-coated at soaking times varying between 1- and 5-minute using a sol-derived calcium Hydrooxyapatite (HA) powder. The coated compacts were heat-treated at 840 oC. The coating thickness was found to increase with increasing soaking time, from 1.87 µm at 1-minute soaking to 9 µm at 5-minute soaking on the average. It was shown that at increasing soaking times, the originally open pores started to close, while at low soaking times the Ti6Al4V particles were partially coated. The coating layer was shown to be nano porous and the depth of coating was observed to be relatively shallow: only few particles near the compact surface were HA-coated

Proposed Improvements in Work Postures to Reduce Musculoskeletal Disorder Risk of The Worker's Posture in the Packing Division PT XYZ

Abstrak PT XYZ adalah perusahaan yang memproduksi produk kemasan fleksibel (Flexible Packaging). Dalam penanganan aktivitas pekerjaannya, PT XYZ masih melakukannya secara manual dimana terdapat pekerja yang bekerja dengan frekuensi gerakan yang berulang dan melakukan pengangkatan beban berlebihan pada bagian packing. Penelitian ini diawali dengan penyebaran kuisioner keluhan dan Nordic Body Map (NBM) kepada setiap pekerja. Dari hasil kuisioner tersebut, semua pekerja mengalami keluhan MSDs pada bagian tubuh bahu kanan (77,8%), bahu kiri (66,7%), leher bagian atas, punggung, dan pinggang (44,4%). Rapid Upper Limb Assessment (RULA) merupakan salah satu metode yang efektif untuk melakukan evaluasi postur kerja. Dari evaluasi postur kerja (risiko dari faktor pekerjaan) dengan piranti lunak RULA untuk aktivitas proses pengemasan dan aktivitas penempatan produk pada bagian Packing diperoleh hasil adalah pada level 4 dengan tingkat risiko dan tindakan yang perlu diadakan perubahan dan perbaikan segera. Selain itu, risiko dari faktor pekerja, seperti umur, jam tidur, kebiasaan olahraga, kebiasaan merokok juga berpotensi mempercepat terjadinya keluhan MSDs. Oleh karena itu, usulan perbaikan yang dilakukan berupa perubahan meja kerja yang ergonomis, yaitu dengan panjang 178,04 cm, lebar 76,91 cm, dan tinggi yang disesuaikan untuk setiap pekerja 88,92 cm, 94,78 cm, dan 100,64 cm, penambahan alat handling berupa jib crane, perbaikan terhadap postur kerja yang benar, dan perubahan layout tata letak fasilitas kerja yang baru. Kata Kunci:  keluhan MSDs, nordic body map (NBM), rapid upper limb assessment (RULA), ergonomis Abstract PT XYZ is a manufacturing company of flexible-packaging product. In the operational side, manual processes are still dominant in the company. The workers work in very repetitive movements and sometimes lift up overload product packages. This research begins with dissemination of complaint questionnaires and Nordic Body Map (NBM) to the workers. The research result shows that all sampling workers have MSDs complaints on their right shoulders (77.8%), left shoulder (66.7%), upper neck, backbones, and hips (44.4%). Rapid Upper Limb Assessment (RULA) is one of the most effective methods to evaluate the working posture. The evaluation of work posture (risk factors of work) with the software RULA for packaging process activity and product placement activity show that the results obtained is at level 4. Thus, it needs immediate changes and improvements. In addition, risk factors of workers such as age, sleeping time, sport and smoking habits, potentially enhance the MSDs complaints. Four solutions are then proposed. First, changes in work-desk dimensions to be more ergonomic with length of 178.04 cm, width of 76.91 cm, and heighst that can be adjusted to each worker: 88.92 cm, 94.78 cm and 100.64 cm. The second solution is adding more handling equipment such as jib cranes. Correcting work postures is another and changing the layout of the work facilities are the third and fourth solutions. Key words: MSDs complaints, nordic body map (NBM), rapid upper limb assessment (RULA), ergonomi

Pathotypic diversity of Hyaloperonospora brassicae collected from Brassica oleracea

Downy mildew caused by Hyaloperonospora brassicae is an economically destructive disease of brassica crops in many growing regions throughout the world. Specialised pathogenicity of downy mildews from different Brassica species and closely related ornamental or wild relatives has been described from host range studies. Pathotypic variation amongst Hyaloperonospora brassicae isolates from Brassica oleracea has also been described; however, a standard set of B. oleracea lines that could enable reproducible classification of H. brassicae pathotypes was poorly developed. For this purpose, we examined the use of eight genetically refined host lines derived from our previous collaborative work on downy mildew resistance as a differential set to characterise pathotypes in the European population of H. brassicae. Interaction phenotypes for each combination of isolate and host line were assessed following drop inoculation of cotyledons and a spectrum of seven phenotypes was observed based on the level of sporulation on cotyledons and visible host responses. Two host lines were resistant or moderately resistant to the entire collection of isolates, and another was universally susceptible. Five lines showed differential responses to the H. brassicae isolates. A minimum of six pathotypes and five major effect resistance genes are proposed to explain all of the observed interaction phenotypes. The B. oleracea lines from this study can be useful for monitoring pathotype frequencies in H. brassicae populations in the same or other vegetable growing regions, and to assess the potential durability of disease control from different combinations of the predicted downy mildew resistance genes

Cmos Programmable Time Control Circuit Design For Phased Array Uwb Ground Penetrating Radar Antenna Beamforming

Phased array radar systems employ multiple antennas to create a radar beam that can be steered electronically. By manipulating the relative phase values of feeding signals among different antennas, the effective radiation pattern of the array can be synthesized to enhance the main lobe in a desired direction while suppressing the undesired side lobes in other directions. Hence the radar scanning angles can be electronically controlled without employing the bulky mechanical gimbal structure, which can significantly reduce radar system size, weight and power consumption. In recent years, phased array technologies have received great attentions and are explored in developing many new applications, such as smart communication systems, military radars, vehicular radar, etc. Most of these systems are narrow band systems, where the phase delays are realized with narrow band phase shifter circuits. For the impulse ground penetrating radar however, its operating frequency spans an ultrawide bandwidth. Therefore the traditional phase shifters are not applicable due to their narrow band nature. To resolve the issue, in this study, a true time delay approach is explored which can precisely control time delays for the feeding pulse signals among different antennas in the array. In the design, an on chip programmable delay generator is being developed using Global Foundry 0.18 µm 7 HV high voltage CMOS process. The time delay control is realized by designing a programmable phase locked loop (PLL) circuit which can generate true time delays ranging from 100 ps (picoseconds) to 500 ps with the step size of 25 ps. The PLL oscillator\u27s frequency is programmable from 100MHz to 500MHz through two reconfigurable frequency dividers in the feedback loop. As a result, the antenna beam angle can be synthesized to change from 9.59° to 56.4° with a step of 2.75°, and the 3dB beamwidth is 10°. The power consumption of the time delay circuit is very low, where the supply voltage is 1.8V and the average current is as low as 472uA