Three Dimensional Discrete Map for a Single Inductor Current Mode Controlled Dual Switching DC-DC Converter

Author(s):  
Vanessa Moreno ◽  
Luis Benadero ◽  
Abdelali El Aroudi ◽  
Roberto Giral ◽  
Javier Calvente
2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Christian Hauser ◽  
Annmarie Ryan

Purpose This paper aims to propose a framework to map partnerships as practiced in higher education institutions (HEIs) and trace the current mode of engagement between HEIs and their partners. This paper reflects on the alignment between current practices and what is understood in the literature as “true” partnerships. We are interested in the different modes of engagement that are labeled by the HEIs as partnerships and consider the plasticity of the term. The interest is in how the term is operationalized by HEIs and how variations in approach can be accounted for while still maintaining some stability and common understanding of the term partnership. Design/methodology/approach Drawing on extant literature in the field of cross-sector partnerships, a three-dimensional framework is proposed to map partnerships as practiced in HEIs. Furthermore, this paper draws on insights gained from the partnership stories of 13 leading principles of responsible management education (PRME) signatories to evidence examples of how this framework can help us to categorize the different types of engagement that the HEIs call partnerships. These case stories were gathered in the fall of 2019, based on a brief inquiry form sent to the 39 PRME signatories who were part of the PRME Champions Cycle 2018–2019. Findings This paper sees cases where faculty drive interaction on sustainable development goal-related issues with external stakeholders, but where the impact of these interactions seems to reside within the main business of the HEI (teaching and research). In contrast, much partnering work addresses broader social impacts. Of particular, interest in partnerships that seek to address a specific local issue, first and foremost and doing so in such a way as to apply the unique resources of the HEI working in multi-stakeholder networks. This paper also notes important variation between individual faculty-driven initiatives and initiatives where the school provides a strategic framework to support these efforts. Research limitations/implications By focusing on the academic sector and its stakeholder partnerships, this paper contributes to the literature on cross-sector partnerships. In particular, the specifics of this context and the importance of, for example, academic freedom have been under-researched in this field. Furthermore, the framework presented is novel in that it helps us to grasp the nuances of external university partnerships that can form out of individual, programmatic and other institutional levels. Practical implications From a practice perspective, the framework offers a useable tool for HEI partnership managers to position themselves and their activities and reflect more on how they organize external partnerships. Further, this tool offers a more precise framework for the discussion on partnerships within the PRME to sharpen the partnership instrument and bring more clarity about what is meant by the partnership for the goals. Originality/value The paper offers a novel partnership portfolio framework that contributes both to theory and practice. The framework aids in mapping the locus of benefits/outcomes and the material and affective commitments made by the HEI to bring these collaborations about. In dimensionalizing partnerships in this way, this paper can conceptualize a balanced portfolio in an HEI’s partnerships for the goals.


2019 ◽  
Vol 12 (1) ◽  
pp. 51-60
Author(s):  
Guohua Zhou ◽  
Shaohuan Zeng ◽  
Shuhan Zhou ◽  
Guihua Mao ◽  
Shungang Xu

2019 ◽  
Vol 53 (4) ◽  
pp. 466
Author(s):  
M. Ledra ◽  
A. El Hdiy

AbstractA three-dimensional Monte Carlo simulation algorithm is used to study the contrast of two dislocations perpendicular to the irradiated surface of an n -doped silicon sample in the electron beam induced current mode. The dislocations are positioned in the irradiation trajectory, and each of both is considered as a cylinder where the minority carrier diffusion length varies abruptly from a low inside dislocations up to a high value outside dislocations. The EBIC contrast was obtained by simulating the random diffusion of carriers generated at point-like sources randomly distributed within the generation volume. Results are analyzed on the basis of change in the generation volume in the bulk of the sample and of carrier trapping process inside dislocations. The EBIC contrast increases with the increase of the electron beam energy. It also increases when the minority diffusion length inside dislocations, or their separating distance decreases.


Author(s):  
Xiaoyan Wu ◽  
Shu Wang ◽  
Xinnan Wang ◽  
Guogeng He

Film shovel is the key device for mechanized operation of residual film recovery, in which the depth of soil breakage of the shovel is related to the degree of damage to the plastic film and the recovery efficiency of the residual film. However, the current mode of operation requires experience and visual inspection, which often leads to low level of mechanization and inefficient operation. The topic is to improve the existing residual film recovery device, focusing on the three-dimensional modeling and monitoring system of intelligent film lifting shovel. By optimizing the three-dimensional structure of the intelligent film-lifting shovel and kinematics simulation analysis based on Adams software, the design inclination angle of the loosening shovel is 60∘, and the breaking depth of the safe operation is 20–50 mm. Then through the use of Ethernet interface based on EtherCAT bus and the real-time bidirectional communication between BECKHOFF CX2030 controller and module and HMI, the on-line data transmission in the process of intelligent film shovel operation is realized. Field test results verify that the intelligent film-lifting shovel is feasible in the intelligent operation and recovery efficiency of the residual film recovery operation, which can greatly improve the efficiency of the whole machine operation.


1966 ◽  
Vol 25 ◽  
pp. 227-229 ◽  
Author(s):  
D. Brouwer

The paper presents a summary of the results obtained by C. J. Cohen and E. C. Hubbard, who established by numerical integration that a resonance relation exists between the orbits of Neptune and Pluto. The problem may be explored further by approximating the motion of Pluto by that of a particle with negligible mass in the three-dimensional (circular) restricted problem. The mass of Pluto and the eccentricity of Neptune's orbit are ignored in this approximation. Significant features of the problem appear to be the presence of two critical arguments and the possibility that the orbit may be related to a periodic orbit of the third kind.


Author(s):  
M. Boublik ◽  
W. Hellmann ◽  
F. Jenkins

The present knowledge of the three-dimensional structure of ribosomes is far too limited to enable a complete understanding of the various roles which ribosomes play in protein biosynthesis. The spatial arrangement of proteins and ribonuclec acids in ribosomes can be analysed in many ways. Determination of binding sites for individual proteins on ribonuclec acid and locations of the mutual positions of proteins on the ribosome using labeling with fluorescent dyes, cross-linking reagents, neutron-diffraction or antibodies against ribosomal proteins seem to be most successful approaches. Structure and function of ribosomes can be correlated be depleting the complete ribosomes of some proteins to the functionally inactive core and by subsequent partial reconstitution in order to regain active ribosomal particles.


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