scholarly journals Inovasi pemanfaatan peta anomali pseudogravitasi untuk interpretasi pola sebaran batuan andesit masif di desa Candiwulan kecamatan Kutasari kabupaten Purbalingga dan sekitarnya

2020 ◽  
Vol 3 (1) ◽  
pp. 115
Author(s):  
Sehah Allasimy ◽  
Sukmaji Anom Raharjo ◽  
Urip Nurwijayanto Prabowo
Keyword(s):  
Personal Computer ◽  
Arc Gis ◽  
Fortran 77

Pemanfaatan peta anomali pseudogravitasi untuk menginterpretasi sebaran batuan andesit di Desa Candiwulan Kecamatan Kutasari Kabupaten Purbalingga dan sekitarnya telah dilakukan. Penelitian dilakukan pada bulan April hingga September 2019. Bahan dan peralatan yang diperlukan terdiri atas data anomali magnetik total, personal computer (PC), dan beberapa perangkat lunak seperti Fortran 77, Surfer 10, dan Arc-GIS 3.0. Jumlah data anomali magnetik total yang diperoleh adalah 142 data yang membentang pada posisi geografis 109,2788° – 109,3072° BT dan 7,3032° – 7,3319° LS dengan nilai berkisar -1,376.79 – 2,037.26 nT. Data anomali magnetik total selanjutnya diolah melalui beberapa tahap sehingga diperoleh data anomali magnetik lokal dengan nilai berkisar -1.238,13 – 1.892,4 nT. Pemfilteran terhadap data anomali magnetik lokal  dilakukan untuk mereduksi efek-efek magnetik di permukaan sehingga diperoleh data anomali magnetik lokal baru dengan nilai berkisar -309.321 – 770.88 nT. Untuk melokalisir sumber anomali bawah permukaan, data anomali magnetik lokal baik sebelum maupun setelah difilter ditransformasi menjadi data anomali pseudogravitasi. Untuk data anomali magnetik sebelum difilter, diperoleh data anomali pseudogravitasi berkisar-75,992 – 119,498 mGal. Sedangkan untuk data anomali magnetik setelah difilter, diperoleh data anomali pseudogravitasi berkisar -27,815 – 41,087 mGal. Hasil interpretasi terhadap kedua peta anomali pseudogravitasi mengindikasikan adanya sumber anomali dangkal yang tersebar di bagian barat hingga barat laut daerah penelitian, dimana sumber anomali tersebut mengarah relatif ke bawah di bagian barat. Sumber anomali tersebut diinterpretasi sebagai batuan beku andesit yang masif

Quantitative parallel EELS spectrum imaging developed as a new tool in AEM

1992 ◽  
Vol 50 (2) ◽  
pp. 1202-1203
Author(s):  
Gianluigi Botton ◽  
Gilles L'espérance
Keyword(s):  
Statistical Analysis ◽  
Spatial Resolution ◽  
Personal Computer ◽  
Systematic Study ◽  
Present Author ◽  
Chemical Elements ◽  
Detection Limits ◽  
Research Groups ◽  
Quantitative Performance ◽  
Spectrum Imaging

As interest for parallel EELS spectrum imaging grows in laboratories equipped with commercial spectrometers, different approaches were used in recent years by a few research groups in the development of the technique of spectrum imaging as reported in the literature. Either by controlling, with a personal computer both the microsope and the spectrometer or using more powerful workstations interfaced to conventional multichannel analysers with commercially available programs to control the microscope and the spectrometer, spectrum images can now be obtained. Work on the limits of the technique, in terms of the quantitative performance was reported, however, by the present author where a systematic study of artifacts detection limits, statistical errors as a function of desired spatial resolution and range of chemical elements to be studied in a map was carried out The aim of the present paper is to show an application of quantitative parallel EELS spectrum imaging where statistical analysis is performed at each pixel and interpretation is carried out using criteria established from the statistical analysis and variations in composition are analyzed with the help of information retreived from t/γ maps so that artifacts are avoided.

The quantitative comparison of experimental and simulated diffraction contrast images

1995 ◽  
Vol 53 ◽  
pp. 102-103
Author(s):  
Stuart McKernan
Keyword(s):  
Image Processing ◽  
Personal Computer ◽  
Close Agreement ◽  
Quantitative Comparison ◽  
Image Simulation ◽  
Computing Power ◽  
Diffraction Contrast ◽  
Simulated Images ◽  
Made In

For many years the concept of quantitative diffraction contrast experiments might have consisted of the determination of dislocation Burgers vectors using a g.b = 0 criterion from several different 2-beam images. Since the advent of the personal computer revolution, the available computing power for performing image-processing and image-simulation calculations is enormous and ubiquitous. Several programs now exist to perform simulations of diffraction contrast images using various approximations. The most common approximations are the use of only 2-beams or a single systematic row to calculate the image contrast, or calculating the image using a column approximation. The increasing amount of literature showing comparisons of experimental and simulated images shows that it is possible to obtain very close agreement between the two images; although the choice of parameters used, and the assumptions made, in performing the calculation must be properly dealt with. The simulation of the images of defects in materials has, in many cases, therefore become a tractable problem.

On-line alignment and astigmatism correction using a TV and personal computer

1993 ◽  
Vol 51 ◽  
pp. 202-203
Author(s):  
F. Hosokawa ◽  
Y. Kondo ◽  
T. Honda ◽  
Y. Ishida ◽  
M. Kersker
Keyword(s):  
High Resolution ◽  
Personal Computer ◽  
Block Diagram ◽  
Incident Beam ◽  
Ccd Camera ◽  
Alignment Procedure ◽  
Astigmatism Correction ◽  
Transmission Electron ◽  
Alignment System ◽  
On Line

High-resolution transmission electron microscopy must attain utmost accuracy in the alignment of incident beam direction and in astigmatism correction, and that, in the shortest possible time. As a method to eliminate this troublesome work, an automatic alignment system using the Slow-Scan CCD camera has been introduced recently. In this method, diffractograms of amorphous images are calculated and analyzed to detect misalignment and astigmatism automatically. In the present study, we also examined diffractogram analysis using a personal computer and digitized TV images, and found that TV images provided enough quality for the on-line alignment procedure of high-resolution work in TEM. Fig. 1 shows a block diagram of our system. The averaged image is digitized by a TV board and is transported to a computer memory, then a diffractogram is calculated using an FFT board, and the feedback parameters which are determined by diffractogram analysis are sent to the microscope(JEM- 2010) through the RS232C interface. The on-line correction system has the following three modes.

Astronomy on the Personal Computer

1998 ◽  
Author(s):  
Oliver Montenbruck ◽  
Thomas Pfleger
Keyword(s):  
Personal Computer

The Image Database Management System of Teaching File Using Personal Computer

1995 ◽  
Vol 32 (4) ◽  
pp. 677
Author(s):  
M J Shin ◽  
G W Kim ◽  
T J Chun ◽  
W H Ahn ◽  
S K Balk ◽  
...  
Keyword(s):  
Personal Computer ◽  
Management System ◽  
Database Management ◽  
Image Database ◽  
Database Management System ◽  
Teaching File

Astronomie mit dem Personal Computer

1994 ◽  
Author(s):  
Oliver Montenbruck ◽  
Thomas Pfleger
Keyword(s):  
Personal Computer

Perangkat keras

2020 ◽  
Author(s):  
Intan khadijah simatupang
Keyword(s):  
Computer System ◽  
Personal Computer

Perangkat computer harus bisa difungsikan secara komperehensif (kompak dan bersama-sama) dalam melaksanakan tugasnya yaitu dalam mengolah data atau informasi. Untuk mewujudkan konsepsi komputer sebagai pengolah data agar menghasilkan suatu informasi, maka diperlukan system computer (computer system) yang elemennya terdiri dari hardware, software, dan brainware. Ketiga elemen system computer tersebut harus saling berhubungan dan membentuk kesatuan yang saling mendukung untuk bekerja sama. Hardware tidak akan berfungsi apabila tanpa software, demikian juga sebaliknya. Dan keduanya tidak akan bermanfaat apabila tidak ada manusia (brainware) yang mengoperasikannya dan mengendalikannya. Maka itu, kita sebagai brainware yang sehari-menggunakan seperangkat PC (Personal Computer),harus mengetahui manfaat dan kegunaan dari perangkat-perangkat ini. Melalui makalah ini kamiakan membahas tentang salah satu dar

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