Prediction and interpolation in geostatistics are tind of spatial statistical analysis to estimate the data in locations which can not be sampled (missing data) based on existing data yet still need a model. Geostatistics is also highly correlated with data autocorrelation. In data about poverty, prediction and interpolation are useful

This paper discusses about generator calculation of second homotopy module, π_2 ("P"), using Tietze transformation. The calculation is associated with properties of spherical picture. The Tietze transformation technique is implemented to two group presentation, "P" and "Q" which are isomorphic. From this transformations we obtain several group

A lot of photography studios today still perform image processing manually using installed the functions on the computer. As we know, manual image processing takes quite a long time. Therefore, they need an application program which is easier, user-friendly and produces higher quality images. The application program created in

Petri Nets has been widely applied and developed in various aspects of modeling, control and coordination, scheduling, planning, and design of product process systems. This paper provides an example which show how to use Petri Nets for batch plant modeling and realistic analysis as well as the simulation using

Regression is a statistic method to model the correlation between responding variable and free variable. Several things need more attention when making model using regression, one of them is the outlier. Found in the data, outlier will produce less-optimal model. Therefore, outlier detection is needed. This research is objected to

A research on the corona plasma at atmospheric pressure has been carried out. In this study, the mobility of ions Ar +, OH-, H +, CO2 -. is determined. Positive corona plasma is generated using a DC voltage source, and configuration of the electrodes is field point electrodes

Ulos is one of Indonesia's cultural heritage. Ulos is woven fabric originated from Batak North Sumatra, Indonesia. It is varied in design patterns which can be developed using Fractal model. The development of fractal application is objected to enrich kinds of Ulos patterns as well as enhance the creativity

We study heat equation with mix boundary conditions. Remember that this equation is eigenvalue problem which can be solved by separation variable method. In addition, Sturm-Liouville equation will be solved numerically by Crank Nicholson method. At the end of paper we show that the Crank Nicholson method gives an exact