the scarcity of water resources and supply resources limitation, have caused an increasing gap between water supply and demand specially in recent decades in almost all regions of the globe. one of the best known solutions proposed by the economists is using the different water pricing approaches thereby obtaining the optimal allocation and social justice. to this purpose, this paper uses the p...

At the beginning of 2020, a pandemic occurred in all countries, one which was Indonesia and it had an impact on learning carried out Indonesia. Learning that is usually done face-to-face has turned into online learning. This study aims to determine factors affect class XI students their mathematical problem-solving abilities. research uses descriptive qualitative methods. The population simult...

in this paper, a new method is introduced for improving the efficiency of the residue number system, which uses both binary and residue representations in order to represent a number. a residue number system uses the remainder of the division in several different modules. conversion of a number to smaller ones and carrying out parallel calculations on these numbers greatly increase the speed of...

We present the results of a study that focuses in on issues of validity of the motivation towards the environment scale (MTES) in the context of Flanders (the Flemish-speaking community in Belgium). The instrument was developed almost two decades ago in Canada, and is designed to measure the self-determined motivation of people for performing pro-environmental behaviors, but has not yet been ap...

Mathematical modeling methods are powerful tools in the design of various types nanosystems and analysis processes taking place them. Note that main tasks mathematical nanoscale systems are: formation nanoelements, interaction individual elements nanosystem, determination structure isolated nanosystem dynamic states, calculation parameters during its with environment, macro nanosystem. With thi...

Weather forecasting needs a lot of computing power. It is generally accomplished by using supercomputers which are expensive to rent and to maintain. In addition, weather services also have to maintain radars, balloons and pay for worldwide weather data measured by stations and satellites. Weather forecasting computations usually consist of solving differential equations based on the measured p...