The paper introduces a new journal impact measure called The Reference Return Ratio (3R). Unlike the traditional Journal Impact Factor (JIF), which is based on calculations of publications and citations, the new measure is based on calculations of bibliographic investments (references) and returns (citations). A comparative study of the two measures shows a strong relationship between the 3R an...

In this paper we study closed-loop supply chain models for a high-tech product which is featured with a short life-cycle and volatile demand. We focus on the manufacturer's choice of three alternative reverse channel structures for collecting the used product from consumers for remanufacturing: (1) the manufacturer collects the used product directly; (2) the retailer collects the used product f...

In the parity problem, a given cellular automaton has to classify any initial configuration into two classes according to its parity. Elementary cellular automaton rule 60 can solve the parity problem in periodic boundary conditions with array size of the power of two. The spectral analysis of the configurations of rule 60 at each time step in the evolution reveals that spatial periodicity emer...

The development of the learning cycle box media is a dissemination science and technology for Wiropati hamlet community who are experiencing problems in process at home due to Covid-19 pandemic. Learning activities made increase attractiveness school-age children return learning. This activity form mentoring elementary age collaboration with Sahabat Rumah Baca. method carried out through produc...

After a very brief review of twentieth century elementary particle physics, prospects for the next century are discussed. First and most important are technological limits of opportunities; next, the future experimental program, and finally the status of the theory, in particular its limitations as well as its opportunities. Invited talk given at the International Conference on Fundamental Scie...

We generalize theorems of Kesten and Deuschel-Pisztora about the connectedness of the exterior boundary of a connected subset of Zd, where “connectedness” and “boundary” are understood with respect to various graphs on the vertices of Zd. These theorems are widely used in statistical physics and related areas of probability. We provide simple and elementary proofs of their results. It turns out...

The theory of elementary particles permitting to explain their constitution, sizes, bond energy, possible channels of decay, spectrum of weights and other properties is offered.

Gauge symmetries: These are local symmetries that act differently at each space-time point x = (t,x) . They create particularly stringent constraints on the structure of a theory. For example, gauge symmetry automatically determines the interaction between particles by introducing bosons that mediate the interaction. All current models of elementary particles incorporate gauge symmetry. (Detail...