Keterampilan Proses Fisika Siswa melalui LKS Berbasis Jelajah Alam Sekitar (JAS) pada Materi Pokok Suhu dan Kalor di SMAN 2 XIII Koto Kampar”.

The purpose of this study was to describe the results of the physics students learn the skills and know the difference between the skills students learn physics processes using worksheets based natural learnig (JAS) with students who learn using worksheets conventional. The research was conducted from February 2015 through June 2015 with a population of class X IPA and sample class X IPA 25 students and XIPA 2, 24 students. The design of this research is a form of pre-experimental design intact-group comparison. Instruments used test results of students' learning skills physics process which comprises 12 multiple choice questions. Data collection techniques in research is the provision of test results of physical processes of learning skills of students. Technical analysis of data used descriptive analysis and inferential analysis. Descriptive analysis of the average absorption of 80% class experiment with both categories while the control group was 74% in both categories. Based on the absorption of students it can be said the effectiveness of learning in the experimental class and control class is effective. Classical mastery learning students in the experimental class is 84% ​​complete and 62.5% control class is declared incomplete. Classical completeness indicators of process skills in the experimental class that is 100% complete and incomplete control class is 75%. Inferential analysis through statistical calculation t test SPSS 16. tcount = 2.1667 and ttable = 2.012. Based on the criteria of hypothesis testing tcount> ttable so that there is a significant difference against worksheets skills through a process physics-based Natural base learning Around with worksheets conventional level of 95%

Forensic investigations of popular ephemeral messaging applications on Android and iOS platforms

Ephemeral messaging applications are growing increasingly popular on the digital mobile market. However, they are not always used with good intentions. Criminals may see a gateway into private communication with each other through this transient application data. This could negatively impact criminal court cases for evidence, or civil matters. To find out if messages from such applications can indeed be recovered or not, a forensic examination of the device would be required by the law enforcement authority. This paper reports mobile forensic investigations of ephemeral data from a wide range of applications using both proprietary and freeware forensic tools. Both Android and iOS platforms were used in the investigation. The results from the investigation uncovered various artefacts from the iOS device including account information, contacts, and evidence of communication between users. The Android device uncovered evidence of communications, and several media files assumed to be deleted within a storage cache in the Android file system. The forensic tools used within the investigations were evaluated using parameters from the National Institute of Standards and Technology’s (NIST) mobile tool test assertions and test plan

Analisis Pengungkapan Informasi Corporate Social Responsibility Dan Pengaruhnya Terhadap Return Saham

Penelitian ini bertujuan untuk menganalisis faktor-faktor yang mempengaruhi pengungkapan informasi CSR dan pengaruhnya terhadap return saham. Sampel sebanyak 176 Perusahaan yang mempublikasikan laporan tahunan tahun 2009 pada website BEI, yang dianalisis dengan menggunakan analisis regresi. Hasil penelitian menujukkan bahwa ukuran Perusahaan, ukuran dewan komisaris, dan profil Perusahaan berpengaruh terhadap pengungkapan informasi CSR pada laporan tahunan. Hasil penelitian juga menunjukkan bahwa pengungkapan informasi CSR berpengaruh terhadap return saham. Hal ini membuktikan bahwa investor mempertimbangkan aspek sosial dalam mengambil keputusan untuk berinvestasi

Hydrophobicity properties of graphite and reduced graphene oxide of the polysulfone (PSf) mixed matrix membrane

Hydrophobicity properties of graphite and reduced graphene oxide (rGO) (from exfoliated graphite/rGO) towards PSf polymer membrane characteristic and properties at different additives weight concentrations (1, 2, 3, 4 and 5 wt. %) were investigated. Both PSF/graphite and PSf/rGO membranes were characterized in term of hydrophobicity, surface bonding, surface roughness and porosity. FTIR peaks revealed that membrane with graphite and reduced graphene oxide nearly diminished their O-H bonding which was opposite to the graphene oxide peak that shows a strong O-H bonding as increased exfoliated times. These results were in line with the contact angle results that showed strong hydrophobicity of graphite and reduced graphene oxide membranes as increased these additives concentration. The effect of strong hydrophobicity in these membranes also has resulted in smoother surface roughness compared to pristine PSf membrane. Further investigation of the performance of water flux also proved that both above membranes have strong hydrophobic effect, with the lowest pure water flux rate (L/m2h) was given by PSf/rGO 3% membrane at 19.2437 L/m2h

Pengaruh Indeks Good Corporate Governance terhadap Kinerja Keuangan Perusahaan di Iicg dari Tahun 2007-2010

This study is aimed to determine the effect of the index of corporate governance on the companys financial services from IICG in 2007-2010.The indicator Of index of corporate governance was measured with CGPI (Corporate Governance Perception Index) based on the report that released by IICG (Indonesian Institute for Corporate Governance) and the variable that used as indicators of financial services of the company were Return of Equity (ROE) and Return of Investment (ROI). The statistic method was used in hypothesis testing is simple regression with help of SPSS 20.00. The sample of this research were the companies that sequentially following the survey that held by IICG and already publish financial statement from 2007-2010.The result of this research showed that index of GCG influence ROE partially, but not ROI.Keywords : Index Good Corporate Governance (GCG), Return on Investment (ROI), Return on Equity (ROE

Analisa Faktor yang Mempengaruhi Purchase Intention di PT MPI Cikarang Indonesia

Penelitian ini bertujuan untuk mengidentifikasi faktor-faktor yang mempengaruhi keputusan pembelian komponen mobil pada PT Multi Pratama Interbuana Cikarang, Jawa Barat. Faktor-faktor yang digunakan dalam penelitian ini dibangun dari dimensi bauran pemasaran atau marketing mix yaitu Product, Price, Place dan Promotion. Penelitian ini merupakan penelitian kuantitatif dengan analisis faktor dan analisis deskriptif melalui bantuan program statistik PASW Statistics 18. Metode penelitian ini menggunakan semua populasi karena hanya sebanyak 42 responden PT Multi Pratama Interbuana Cikarang, Bekasi, Jawa Barat yang memenuhi syarat sebagai populasi dan sampel. Sumber data yang digunakan pada penelitian ini adalah data primer. Adapun setelah dilakukan penelitian didapatkanlah hasil bahwa factor-faktor yang membentuk keputusan pembelian pada PT Multi Pratama Interbuana Cikarang, Jawa Barat diantaranya adalah faktor Kesesuaian Harga, faktor Akses yang Mudah dan faktor Kualitas Produk