Data envelopment analysis (DEA) is a relatively new data oriented approach to evaluate performance of a set of peer entities called decision-making units (DMUs) that convert multiple inputs into multiple outputs. Within a relative limited period, DEA has been converted into a strong quantitative and analytical tool to measure and evaluate performance. In an article written by Toloo et al. (2009...

Gene knockout, an important technology in molecular biology, has been broadly applied in industrial microbial metabolic engineering. From the basic mechanism of DNA recombination, we summarized and compared in this review different gene knockout strategies. Three most hot and important approaches, including the lambda Red recombination system using the linear dsDNA as recombination substrate, t...

We discuss ways to probe the origin of neutrino masses at the Energy and Intensity frontiers, in TeV-scale Left-Right seesaw models where small neutrino masses arise via type-I seesaw mechanism. We consider generic (‘vanilla’) version of such models as well as a version which leads to ‘large’ lightheavy neutrino mixing while keeping the neutrino masses small in a natural manner. We point out sp...

We study hierarchies of partitions in a topological space where the interiors of the classes and their frontiers are simultaneously represented. In both continuous and discrete spaces our approach rests on tessellations whose classes are R-open sets. In the discrete case, the passage from partitions to tessellations is expressed by the Alexandrov topology and yields double resolutions. A new to...

Controllable preparation of nanopores to promote the performance of electrochemical biosensing interfaces has become one of the researching frontiers in biosensing. A double biocatalysis signal amplification of glucose biosensor for the study of electrochemical behaviors of glucose oxidase (GOx) was proposed by using horseradish peroxidase biosynthesized porous graphene (PGR) as the platform fo...

This paper examines the multi-dimensional efficiency of Islamic banking sector and its determinants, including impacts COVID-19 pandemic. To do that, we use a novel approach two-stage data envelopment analysis (DEA) double frontiers to evaluate overall 79 banks across 16 countries (2005–2020). In first-stage analysis, found that experienced an increasing trend in performance, even during recent...

We present a class of partitioning scheme that we have called frontier sets. Frontier sets build on the notion of a potentially visible set (PVS) (Airey, Rohlf & Brooks, 1990) (Teller & Sequin, 1991). In a PVS, a world is sub-divided into cells and for each cell all the other cells that can be seen are computed. In contrast, a frontier set considers pairs of cells, A and B. For each pair, it li...

population growth and the needs for protein and dairy products has urged policy makers to pay attention to efficiency policies in the livestock sector. the objective of this study is to survey the factors affecting the income of milk production, to calculate cattlemen’s technical efficiency and to determine the factors affecting the technical efficiency in the northern khorasan province. the re...