The inverse distance method, one of the commonly used methods for analyzing spatial variation of rainfall, is flexible if the order of distances in the method is adjustable. By applying the genetic algorithm (GA), the optimal order of distances can be found to minimize the difference between estimated and measured precipitation data. A case study of the Feitsui reservoir watershed in Taiwan is ...

Current state of <i>Chlamys swiftii</i> settlements and resources this species in the coastal waters Primorye (Japan Sea) are considered on base surveys conducted 2007–2021. The data spatial distribution abundance scallops were obtained by methods scuba counts at depth < 20 m. total biomass calculated using Voronoi diagrams (Thiessen polygons). In total, analyzed for 13457 statio...

Perubahan iklim dapat mempengaruhi karakteristik hujan suatu wilayah dan berpengaruh terhadap pengelolaan sumber daya air. Pengelolaan air yang mempertimbangkan faktor perubahan membutuhkan data hasil proyeksi model iklim. Hujan rerata pada DAS bisa diperoleh dengan dua pendekatan. Pertama, melakukan downscaling untuk setiap stasiun hujan, kemudian menghitung (Thiessen A). Kedua, wilayah, lalu ...

In this paper, we consider procedures for logic and arithmetic operations with DNA molecules. We first show a DNA representation of n binary numbers of m bits, and propose a procedure to assign the same values for the representation. The representation enables addressing feature, and the procedure is applicable to n binary numbers of m bits in O(1) steps in parallel. Next, we propose a procedur...

The spatial variation of crop yield was mainly caused by the complicated factors, such as soil and land factors. Based on sound theoretical reasoning, the paper performed an exploratory investigation of the relationship between the spatial distribution of yield measurement about 849 samplings on Thiessen polygon. Reasonable sample size or sampling density is an assurance of yield estimation sur...

This paper presents a new algorithm for computing Boolean operations on polygons. This kind of operations are frequently used in Geosciences in order to get spatial information from spatial data modeled as polygons. The presented algorithm is simple and easy to understand and implement. Let n be the total number of edges of all the polygons involved in a Boolean operation and k be the number of...

Using the Horyn River Basin rivers as an example hydrograph separation algorithm was defined. The results of calculating different river feeding types values were given in paper. Also, analyzed their long-term dynamics. Ukrainian are characterized by snow, rain, and ground (soil underground) feeding. amount snow rain is determined taking into account characteristics atmospheric precipitation co...

Anthropologists have extensively examined the material politics of bureaucratic rule and technical expertise. But ethnographic analysis must also attend to mathematical abstractions that cannot be reduced any specific kind materiality. A key site appreciate such is georeferentiation Indigenous property polygons in Peru's Amazonian region Loreto. In context climate change biodiversity loss, both...

Determination of hydrological properties the aquifer is fundamental importance in hydrogeological and geotechnical studies. An attempt has been made to refine hydraulic conductivity values computed from pumping test by utilizing laboratory. This study uses laboratory rock samples, data conjunction with empirical equations, vertical electric sounding (VES) determine Lower Bari Doab (LBD) Indus B...