Multi-dimensional Inversion Modeling of Surface Nuclear Magnetic Resonance (SNMR) Data for Groundwater Exploration

Groundwater is an important economic source of water supply for drinking water and irrigation water for agriculture. Surface nuclear magnetic resonance (SNMR) sounding is a relatively new geophysical method that can be used to determine the presence of culturally and economically important substances, such as subsurface water or hydrocarbon distribution. SNMR sounding allows the determination of water content and pore size distribution directly from the surface. The SNMR method is performed by stimulating an alternating current pulse through an antenna at the surface in order to confirm the existence of water in the subsurface. This paper reports the development of a 3-D forward modeling code for SNMR amplitudes and decay times, after which an improved 2-D and 3-D inversion algorithm is investigated, consisting of schemes for regularizing model parameterization. After briefly reviewing inversion schemes generally used in geophysics, the special properties of SNMR or magnetic resonance sounding (MRS) inversion are evaluated. We present an extension of MRS to magnetic resonance tomography (MRT), i.e. an extension for 2-D and 3-D investigation, and the appropriate inversions

APLIKASI METODA GEOLISTRIK DAN GEOMAGNET DALAM ANALISIS DAN PEMETAAN POTENSI MINERALISASI ZONA TIMAH PRIMER DI DAERAH AM

Timah merupakan logam putih keperakan dengan kekerasan dan kekuatan yang rendah dengan konduktivitas termal dan listrik yang tinggi. Timah primer merupakan salah satu endapan timah yang terdapat pada batuan granit dan metasediment yang berasosiasi dengan urat kuarsa. Keberadaan timah primer dapat diidentifikasi dengan metoda geofisika seperti metoda geolistrik (tahanan jenis dan polarisasi terimbas/IP) dan geomagnet dengan mengukur parameter-parameter khas yang ditafsirkan. Metoda tahanan jenis mengukur besar nilai resistivitas material di bawah permukaan dari beda potensial terukur, sementara metoda IP memanfaatkan efek peluruhan potensial untuk mengukur sifat parameter chargeabilitas, dan metoda geomagnet didasarkan pada pengukuran anomali magnet bumi berdasarkan perubahan medan magnet yang terukur yang dikenal sebagai suseptibilitas. Hasil analisis kedua metoda ini direkonstruksikan suatu model bawah permukaan 2D serta pemetaan keberadaan zona mineralisasi timah primer. Pada lintasan D model yang dihasilkan dari dua penampang tersebut memperlihatkan 2 nilai anomali chargeabilitas dan resistivitas tinggi yang dikaji dengan adanya intrusi batuan granit berperan dalam proses pembentukan endapan timah primer. Penampang 2D geomagnet dari hasil slicing memperlihat pula adanya kehadiran batuan meta batupasir/kuarsit sebagai produk dari intrusi batuan granit, yang diduga memotong melewati lintasan D

Mentakhrij kitab al-Mabaadiy al-Fiqhiyah

Sebagai salah satu missal adalah kitab karangan Umar Abdu al-Jabbar “al-Mabaadiy al-Fiqhiyah”. Kitab tersebut dalam mengemukakan dasar pengambilan hadits tidak menyebutkan rangkaian sanad awal hingga akhir. Maka tidaklah salah jika banyak orang yang berkomentar bahwa hadits-hadits yang ada dalam kitabmahbadi tersebut bernilai palsu (maudlu’i). Rumusan masalah penelitian ini adalah; 1. Benarkah hadits yang ada dalam bab tersebut (dalam al-Mabaadiy al-Fiqhiyah) mempunyai sanad. 2. Apakah sanad-sanad tersebut terdewankan atau tidak terdewankan. 3. Apakah periwayatan yang dipakai dengan menggunakan sistem bil makna ataukah dengan bil lafdzi. Metode yang digunakan adalah metode takhrij billafdzi (penelusuran haits-hadits dengan lafadz) dan metode takhrij bil makna (penelusuran hadits dengan melalui topic masalah). Kesimpulan dari penelitian ini adalah; 1. Hadits-hadits yang ada pada kitab Mahbadi al-Fiqhiyah tersebut mempunyai sanad. 2, sanad-sanad yang ada pada kitab Mahbadi al Fiqhiyah tersebut semuanya terdewankan. Misalnya; pada Sunan Abu Dawud, at-Turmudzi, an-Nasa’I, Ibnu Majah, Kuslim, ad-Darimi dan sebagainya. 3. Periwayatan yang dipergunakan hampir semuanya dengan meriwayatkan sistim lafadz (billafdzi)

Fenomenologi Perilaku Komunikasi Suporter Fanatik Sepakbola dalam Memberikan Dukungan pada Psm Makassar

Phenomenology is the study which focuses on the discovery of a fact to a social phenomenon and trying to understand human behavior based on the perspective of the participants. This study aims to examine and categorize verbal and non verbal communication behavior of football fanatic fans in supporting PSM Makassar. The study was conducted by looking at the actions of the fans in the stadium while watching a football club's home game PSM Makassar, visited the headquarters of several groups of fans who are still active and held a meeting in person to learn more about the interview process. The method used in this study is a qualitative research study with a phenomenological approach, with participant observation in which researchers work directly be part of the study, together amid individuals or groups under study, to understand what is happening, understand the patterns and interactions, and in-depth interviews to several informants. The results of the research indicate that verbal and non- verbal communication behavior of football fanatic fans in supporting PSM Makassar involves identity, attributes, action; there is a meaning of message conveyed by football fanatic fans in supporting PSM Makassar. Verbal and non-verbal communication behavior of football fanatic fans in supporting PSM Makassar is not seperated from self- identity and social identity in society. The meaning indicated by fans through verbal and non-verbal merely supports their favorite football club by giving spirit

Pengaruh Car, Ldr Dan Npl Terhadap Roa Pada Sektor Perbankan Di Bursa Efek Indonesia

Penelitian ini bertujuan untuk mengetahui pengaruh capital adequacy ratio , loan to deposit ratio dan non performing loan terhadap return on assets pada sektor perbankan di Bursa Efek Indonesia dalam 5 tahun pengamatan(2009-2013). Populasi yang digunakan dalam penelitian ini adalah 31 Perusahaan perbankan serta teknik pengambilan sampelnya adalah teknik purposive sampling. Berdasarkan hasil analisis regresi linier berganda maka dapat disimpulkan Capital adequacy ratio berpengaruh positif dan tidak signifikan terhadap return on assets, Loan to deposit ratio berpengaruh positif dan tidak signifikan terhadap return on assets,Non performing loan berpengaruh negatif dan signifikan terhadap return on assets. Kata kunci: Capital Adequacy Ratio , Loan To Deposit Ratio, Non Performing Loan, dan Return On Asset

The interaction between identity preservation and linguistic integration of immigrants: the case study of Eritreans in Switzerland

This study investigates the interaction between identity preservation and linguistic integration of Eritrean immigrants in the French speaking part of Switzerland. The focus is put on Eritrean refugees and asylum seekers, who have been in Switzerland between six months to three years. This research is guided by three main research questions: a) what are their language use? b) what are their language attitudes? c) what factors play a role in language learning motivation? In terms of motivational factors special emphasis is put on political status. Data was collected via a triangulated approach with questionnaires, interviews and observational studies. A total number of 102 participants took part in the questionnaires and five French teachers were interviewed after having their classes observed. The results show that Eritrean immigrants with recent migration background predominantly use Tigrinya in most of the domains. Even though, they develop favorable and positive attitudes towards French, they believe the maintenance of Tigrinya and the Eritrean culture is important, as they find themselves in a different sociocultural space. Thus, language and cultural preservation and transmission plays an even more important role outside Eritrea. The classroom domain is the only one where French is used. The participants argue that they lack language exposure and feel that they cannot be motivated to learn French if they are not given opportunities to use it (i.e. access to labor market). This is linked to their political status, which in the current political climate does not allow them to have access to full integration opportunities