scholarly journals DESIGNING A STEP-UP REGULATOR WITH DIRECT COMMUNICATION USING MATLAB CAD

Author(s):  
Andrey Lysenkov ◽  
Sergey Amelin

The main features of the MATLAB design environment are considered, using the example of the development of a step-down regulator, examples of built-in simulation of assembled circuits in CAD are given.

Author(s):  
Andrey Lysenkov ◽  
Sergey Amelin

The main features of the MATLAB design environment are considered, using the example of the development of a step-up regulator, an example of the simulation of assembled circuits built into CAD is given.


Author(s):  
A. Yamanaka ◽  
H. Ohse ◽  
K. Yagi

Recently current effects on clean and metal adsorbate surfaces have attracted much attention not only because of interesting phenomena but also because of practically importance in treatingclean and metal adsorbate surfaces [1-6]. In the former case, metals deposited migrate on the deposit depending on the current direction and a patch of the deposit expands on the clean surface [1]. The migration is closely related to the adsorbate structures and substrate structures including their anisotropy [2,7]. In the latter case, configurations of surface atomic steps depends on the current direction. In the case of Si(001) surface equally spaced array of monatom high steps along the [110] direction produces the 2x1 and 1x2 terraces. However, a relative terrace width of the two domain depends on the current direction; a step-up current widen terraces on which dimers are parallel to the current, while a step-down current widen the other terraces [3]. On (111) surface, a step-down current produces step bunching at temperatures between 1250-1350°C, while a step-up current produces step bunching at temperatures between 1050-1250°C [5].In the present paper, our REM observations on a current induced step bunching, started independently, are described.Our results are summarized as follows.(1) Above around 1000°C a step-up current induces step bunching. The phenomenon reverses around 1200 C; a step-down current induces step bunching. The observations agree with the previous reports [5].


2006 ◽  
Vol 39 (20) ◽  
pp. 54
Author(s):  
SHERRY BOSCHERT
Keyword(s):  

Author(s):  
Santiago DE FRANCISCO ◽  
Diego MAZO

Universities and corporates, in Europe and the United States, have come to a win-win relationship to accomplish goals that serve research and industry. However, this is not a common situation in Latin America. Knowledge exchange and the co-creation of new projects by applying academic research to solve company problems does not happen naturally.To bridge this gap, the Design School of Universidad de los Andes, together with Avianca, are exploring new formats to understand the knowledge transfer impact in an open innovation network aiming to create fluid channels between different stakeholders. The primary goal was to help Avianca to strengthen their innovation department by apply design methodologies. First, allowing design students to proposed novel solutions for the traveller experience. Then, engaging Avianca employees to learn the design process. These explorations gave the opportunity to the university to apply design research and academic findings in a professional and commercial environment.After one year of collaboration and ten prototypes tested at the airport, we can say that Avianca’s innovation mindset has evolved by implementing a user-centric perspective in the customer experience touch points, building prototypes and quickly iterate. Furthermore, this partnership helped Avianca’s employees to experience a design environment in which they were actively interacting in the innovation process.


2020 ◽  
Vol 22 (1) ◽  
pp. 192-215
Author(s):  
Asma Afsaruddin

This article explores how the uniqueness of the Qur'anic revelation has been perceived by primarily Sunnī Muslim commentators through time in the context of four main analytical aspects of revelation: (i) revelation as communication between God and humans that links language to divine truth; (ii) revelation as both oral and written text that points to complementary modes of divine discourse; (iii) revelation as purposeful manifestation of divine mercy and justice; and finally (iv) the idea of revelation as beautiful and inimitable text that invites the human recipient to ponder the aesthetics of divine self-disclosure which becomes reflected in Islamic theology as the doctrine of iʿjāz al-Qurʾān. These aspects are indicated by certain key concepts and terms derived from the Qur'anic vocabulary itself and are discussed in detail in order to illuminate the nature of the Qur'anic revelation—as adumbrated within the Qur'an itself and as elaborated upon by its human exegetes. The Arabic word for the phenomenon of revelation is waḥy and is, strictly speaking, applied to the Qur'an alone. In the Qur'an, the term wahy and its derivatives frequently occur with reference to God and His communication with humankind, although exceptions exist. Tanzīl is another Qur'anic lexeme that refers uniquely to God's direct communication with humanity. In the understanding of a number of influential commentators, both these terms also imply linguistic and rhetorical excellence as a component of divine revelation recognisable in all four of the aspects identified here.


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