the mathematical properties of nano molecules are an interesting branch of nanoscience forresearches nowadays. the periodic open single wall tubulene is one of the nano moleculeswhich is built up from two caps and a distancing nanotube/neck. we discuss how toautomatically construct the graph of this molecule and plot the graph by spring layoutalgorithm in graphviz and netwrokx packages. the sim...

As globalization continues, overseas arable land investment is becoming a viable option for China to alleviate its agricultural growth constraints, and the “Belt Road” initiative offers plenty of opportunities invest in land. This study used data from Land Matrix, KOF, World Bank, CEPII, UNCTAD other databases analyze spatial distribution characteristics factors influencing success or failure C...

wiener index is a topological index based on distance between every pair of vertices in agraph g. it was introduced in 1947 by one of the pioneer of this area e.g, harold wiener. inthe present paper, by using a new method introduced by klavžar we compute the wiener andszeged indices of some nanostar dendrimers.

This paper summarises the arguments and counterarguments within scientific discussion on international cooperation’s role in combatting climate change its impacts. The primary purpose of research is to determine renewable energy development reliance democracy globalisation levels. objects for analysis are Ukraine countries with different regimes: full (Finland, Denmark, Spain), flawed (Poland, ...

Abstract Reinforcement learning (RL) is one of three basic machine paradigms, alongside supervised and unsupervised learning. algorithms have become very popular in simple computer games like chess GO. However, playing classical arcade fighting would be challenging because the complexity command system (the character makes moves according to sequence input) combo system. In this paper, a creati...

in this paper pi, szeged and revised szeged indices of an infinite family of ipr fullereneswith exactly 60+12n carbon atoms are computed. a gap program is also presented that isuseful for our calculations.