Design and Simulation of Reliable and Fast Nanomagnetic Conservative Quantum-dot Cellular Automata (NCQCA) Gate ​

Nanomagnetic Logic (NML) is a promising candidate for the real implementation of quantum-dot cellular automata (QCA) circuits and can be a proper alternative or complement to CMOS circuits. Like any other nanoscale technologies, NML circuits are also subject to fabrication variations. These variations along with fluctuations caused by thermal noise can affect the performance of these circuits. Therefore, design of NML circuits with high testability is an absolute necessity. Circuits based on conservative logic are inherently testable because of their specific properties. In this paper, considering the physical and geometrical properties of nanomagnets, a nanomagnetic conservative quantum-dot cellular automata (NCQCA) gate is designed and evaluated. This circuit can be used as the basic block for the realization of more complex conservative NML circuits. To implement this circuit, the design of the clocked nanomagnetic majority gate is also provided. The OOMMF physical simulation tool is used for simulation and evaluation. The results show the correct functionality of the proposed conservative gate at room temperature. It operates about 34% faster than the NML Fredkin gate. Moreover, the NML version of the conventional Fredkin gate takes 90% more area than the proposed design.

Doing embelêco in musical education: what the embelêco can teach us about a rural musical education

The Embelêco is an artistic and cultural expression, of oral tradition, which takes place in the municipality of Moita Bonita – Sergipe, especially at the Capunga village. In this text, we intend to reflect, based on Decolonial Education and the principles of Rural Education, about the cracks opened by this expression (the Embelêco) in the structures of Musical Education. In order to keep the movement alive, the griot masters teach and the young people learn how to make music. In this process, beyond the musical knowledge, other knowledges are intertwined, which contributes to the musical performance itself. These knowledges are essential for people to construct self-consciousness and to develop awareness for the community. This way, we understand that the artistic and cultural expressions of Brazilian popular culture can be one of the ways to think about a decolonial musical education, acting in the cracks of the modern, scholar, eurocentered, and conservative logic of musical teaching.

Management of the Public Land in Morocco Actors and Logics

The land heritage held by the public authorities represents an important part of the Moroccan land system. The management of this land heritage obeys various logics arising from its functional, legal, and institutional complexity. The objective of this study is to identify the numerous logics that drive the management of land assets by various actors and to describe the impact of these logics on the land management. The adopted methodology is to analyze the theoretical aspects and functions of the land tenure, study the regulatory framework of the land and the territorial land, and deal with the institutional framework of the land heritage management. The achieved consequences of this study have enabled the authors to distinguish three logics: the conservative logic, the regulatory logic, and the promoting logic. The goal behind the chapter is to provide the stakeholders with a functional paradigm to take into account for creating the conciliation tools reinforcing the coordination to carry out the urban development of the country.