Reconfigurable intelligent surfaces (RIS) have been actively researched as a potential technique for future wireless communications, which intelligently ameliorate the signal propagation environment. In conventional design, each RIS element configures and reflects its received independently of all other elements, results in diagonal phase shift matrix. By contrast, we propose novel architecture...

Although leadership has been studied extensively, most research has focused on the political and military spheres. More recent work has also examined the role of leadership in sectors such as manufacturing and technology, both areas where it is essential to encourage and nurture innovation. Yet, in the health sector, where innovation is now high on the policy agenda in many countries, there is ...

this paper is a study in different kinds of innovations in the product-design field and the way of categorization of them and station point of industrial design in this process. the research process comprised the following five steps: 1. defining the research problem and establishing its methodology; 2.selecting and describing samples; 3. analyzing data and shaping hypotheses; 4. testing the ca...

An important open problem in molecular biology is how to use computational methods to understand the structure and function of proteins given only their primary sequences. We describe and evaluate an original machine-learning approach to classifying protein sequences according to their structural folding class. Our work is novel in several respects: we use a set of protein classes that previous...

A new method for the preparation of graphene has been developed via porphyrin exfoliation of graphite in NMP. The exfoliation, which follows the intercalation of organic ammonium ions, is based on the pi-pi interaction between graphene and porphyrins. The graphene sheets prepared by this method show undisturbed sp(2) carbon networks.

An important aspect of auditory scene analysis is sequential grouping of sounds that are similar to one another in preference to sounds that follow one another. This grouping problem is captured by stream segregation tasks with alternating distinct sounds. We examined human auditory cortex activity with low noise fMRI in a stream segregation experiment relying on timbre differences of alternati...

Marker-based image segmentation has been widely used in image analysis and understanding. The well-known Meyer’s marker-based watershed algorithm by immersion is realized using the hierarchical circular queues. A new marker-based segmentation algorithm relying on disjoint set union is proposed in this paper. It consists of three steps, namely: pixel sorting, set union, and pixel resolving. The ...