PERBEDAAN HASIL BELAJAR BIOLOGI ANTARA SISWA YANG DIAJAR DENGAN METODE PEMBELAJARAN KOOPERATIF TIPE JIGSAW DAN TIPE STAD PADA POKOK BAHASAN EKOSISTEM DI KELAS VII SMP NEGERI 2 BANYUDONO TAHUN AJARAN 2010/2011

Novandhi Broto.S, A420070 103, Program Studi Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Muhammadiyah Surakarta, 2011, halaman. Tujuan penelitian ini adalah untuk mengetahui perbedaan hasil belajar biologi antara siswa yang diajar dengan metode kooperatif tipe Jigsaw dan STAD pada pokok bahasan ekosistem di kelas VII SMP Negeri 2 Banyudono tahun ajaran 2010/ 2011. Penelitian ini merupakan penelitian eksperimen yang membandingkan antara metode pembelajaran kooperatif tipe Jigsaw dan pembelajaran kooperatif tipe STAD. Parameter yang diukur adalah skor dari postes hasil belajar pokok bahasan ekosistem. Hasil penelitian yang diperoleh menunjukkan bahwa nilai rata-rata kelas yang diajar menggunakan metode pembelajaran kooperatif tipe Jigsaw = 80,69 dan rata- rata kelas yang diajar menggunakan metode pembelajaran kooperatif tipe STAD=74,86. Berdasarkan hasil penelitian dapat disimpulkan bahwa terdapat perbedaan prestasi belajar IPA Biologi antara siswa yang diajar dengan menggunakan pembelajaran kooperatif tipe Jigsaw dan pembelajaran kooperatif tipe STAD pada pokok bahasan ekosistem kelas VII SMP Negeri 2 Banyudono tahun pelajaran 2010/2011 (t hitung > t tabel (3,22 > 1,994) pada taraf signifikasi 5%

Hubungan Kepadatan, Jenis Kendaraan terhadap Kadar Timbal Udara dan Urin Masyarakat Sekitar Jalan Raya Kota Yogyakarta

Abstrak Riset ini bertujuan untuk mencermati hubungan antara kepadatan, jenis kendaraan terhadap kadar timbal urin masyarakat yang tinggal disekitar jalan utama di Yogyakarta. Sampel penelitian ini meliputi 40 orang yang diambil dari 4 jalan utama yaitu Malioboro, Matelang, Solo, dan KH A. Dahlan. Perhitungan jumlah dan jenis kendaraan difakukan dengan alat pengukur jumlah kendaraan, sedangkan pengukuran kadar timbal di udara digunakan "Low Volume Air Sampler". Analisis kadar timbal diudara dan volume yang mengandung timbal digunakan "Atomic Absorbtion Spoectrophotometer (AAS)", sedangkan analisis statistik digunakan regresi dan korelasi Spearment. Hasil penelitian menunjukkan bahwa terdapat hubungan yang Iemah antara kepadatan kendaraan dengan kadar timbal diudaraantara kepadatan jenis kendaraan (mobil dan sepeda motor) dengan kadar timbal diudaraantara kadar timbal di udara dengan kadar timbal dalam urin orang disekitar jalan. Kadar timbal di udara masih dibawah baku mutu lingkungan dengan rata-rata 0,1427 ugh-113, kadar timbal dalam urin telah melampaui batas toleransi 0,15ing/1). Keluhan subyektif dari masyarakat diindikasikan sebagai sakit kepala, kelelahan, nyeri otot, sakit perm dan muntah, pallor, diare dan hilangnya nafsu makan. Kata kunci: Kemacetan, timbal, udara, air

Pengaruh Teeamwork. Semangat Kerja, Dan Loyalitas Kerja Terhadap Produktivitas Karyawan (Studi Kasus Pada Karyawan Perusahaan Konveksi Manfaat

Abstract This research was conducted at the “Manfaat” Convection Company in Ngunut District, Tulungagung Regency. this company is one of the service businesses engaged in convection and embroidery. The purpose of the study was to determine whether teamwork, work spirit and work loyalty had an effect on employee productivity at a benefit convection company. The type of research used was quantitative research with questionnaire distribution method. The sample in this study were 36 respondents and data processing using SPSS computer program. The variable used in this study is productivity (dependent variable), while the independent variables are teamwork, work spirit and work loyalty. This study has met the requirements of validity and reliability. Analysis of the data used in this study is the classical assumption test, multiple linear regression, hypothesis testing and analysis of the coefficient of determination. The results of this study conclude that the variables of Teamwork, Morale and Work Loyalty have an effect either simultaneously or partially on Employee Work Productivity. For the Manfaat convection company, it is necessary to maintain teamwork, work spirit, and work loyalty because all these variables have very good values, so Companies must maintain the quality of employees that have been done so far in increasing work productivity and also the company. Keywords: Teamwork, Work Spirit, Work Loyalty, Productivity.

Hall effect in the heavy-fermion compound CePtSi

We present Hall-effect measurements on the heavy-fermion compound CePtSi. Above the temperature of antiferromagnetic ordering T_N, the Hall effect of CePtSi exhibits the behavior generally observed in heavy-fermion systems and ascribed to skew scattering. Below T_N the Hall effect is enhanced and its field dependence is strongly nonlinear. We show that this behavior arises from skew scattering or anomalous velocity effects rather than from a change of the ordinary Hall effect induced by a reconstruction of the Fermi surface

A genetic toolkit and gene switches to limit Mycoplasma growth for biosafety applications

Mycoplasmas have exceptionally streamlined genomes and are strongly adapted to their many hosts, which provide them with essential nutrients. Owing to their relative genomic simplicity, Mycoplasmas have been used to develop chassis for biotechnological applications. However, the dearth of robust and precise toolkits for genomic manipulation and tight regulation has hindered any substantial advance. Herein we describe the construction of a robust genetic toolkit for M. pneumoniae, and its successful deployment to engineer synthetic gene switches that control and limit Mycoplasma growth, for biosafety containment applications. We found these synthetic gene circuits to be stable and robust in the long-term, in the context of a minimal cell. With this work, we lay a foundation to develop viable and robust biosafety systems to exploit a synthetic Mycoplasma chassis for live attenuated vectors for therapeutic applications

PENGEMBANGAN MODEL PEMBELAJARAN MELEK MEDIA TELEVISI

One attempt to control the negative effects of television (TV) is to educate parents about the TV media and programs. TV media literacy for parents is needed, so that they as chaperone for their children have the ability to filter messages from TV programs, translate and interpret in accordance with the moral values. This study were aimed to survey media literacy of parents and develop media literacy learning for parents. The populations in this study were the parents of elementary school students of grades 4, 5, and 6 in the South Tangerang for the two districts, namely District of Ciputat and District Setu. Samples were taken purposively of 283 respondents. Data were collected through questionnaires and interviews of 20 respondents in the activities of Focus Group Discussion. The process consisted of three stages, namely the survey, model development, and testing models. All three phases of activity showed the following results. Most of the respondents were knowledgeable about the TV program, and the values contained in the message of the TV program watched by their children. However, some respondents were misunderstood and unsure about the moral values contained in the TV program, so that their attitudes toward the TV programs watched by their children were loose. The second phase was built a learning model in multimedia package with a video format, which presented snippets of TV programs, and guidances from communication experts and child psychologists. This model is presented to respondents in the first focus group discussion. The next phase, the second focus group discussion was conducted to see changes in knowledge and attitudes of parents after receiving the learning model. The results showed that there were changes in knowledge and attitudes of parents about the TV programs watched by their children