scholarly journals Contribution to the systemic modeling of a photovoltaic devices

2021 ◽  
Vol 12 (8) ◽  
pp. 2343-2363
Author(s):  
Hamza Wertani ◽  
Jamel Ben Salem ◽  
Mohamed Najeh Lakhoua
Keyword(s):  
Functional Analysis ◽  
Problem Solving ◽  
Parametric Analysis ◽  
Bond Graph ◽  
The Other ◽  
Photovoltaic System ◽  
Behavioral Analysis ◽  
Functional Study ◽  
Photovoltaic Devices ◽  
Rigorous Approach

The modelling of systems using systemic tools has been for a few years, a subject which has attracted the attention of scientists and especially researchers to allow designers to acquire a rigorous approach to problem solving using the capabilities of already existing methods and tools. This document presents a contribution in the field of modelling, where a methodology based on two methods has been proposed. The first concerns the functional analysis to extract the use functions and the constraint parameters from the system. In this methodology, the static functional study is carried out using the SADT method. On the other hand, the dynamic behavioral analysis is carried out by the SA-RT method. Then, we used a behavioral and parametric analysis, the Bond Graph method, to observe the evolution of representative quantities of a photovoltaic system.

Sharing of Knowledge and Problem Solving When Teammates Have Diverse Hearing Status

2021 ◽  
pp. 104649642110102
Author(s):  
Michael Stinson ◽  
Lisa B. Elliot ◽  
Carol Marchetti ◽  
Daniel J. Devor ◽  
Joan R. Rentsch
Keyword(s):  
Problem Solving ◽  
Hard Of Hearing ◽  
The Other ◽  
Postsecondary Students ◽  
Problem Solution ◽  
Group Problem ◽  
Team Members ◽  
Group Problem Solving ◽  
Complete Problem ◽  
Hearing Status

This study examined knowledge sharing and problem solving in teams that included teammates who were deaf or hard of hearing (DHH). Eighteen teams of four students were comprised of either all deaf or hard of hearing (DHH), all hearing, or two DHH and two hearing postsecondary students who participated in group problem-solving. Successful problem solution, recall, and recognition of knowledge shared by team members were assessed. Hearing teams shared the most team knowledge and achieved the most complete problem solutions, followed by the mixed DHH/hearing teams. DHH teams did not perform as well as the other two types of teams.

Functional Analysis of Intermittently Reinforced Behaviour: A Case Study

1999 ◽  
Vol 16 (4) ◽  
pp. 219-225 ◽  
Author(s):  
Don Tustin
Keyword(s):  
Functional Analysis ◽  
Problem Solving ◽  
Personality Disorder ◽  
Revealed Preference ◽  
New Method ◽  
Dependent Personality Disorder ◽  
Dependent Personality ◽  
Standard Problem ◽  
Using Data

AbstractFunctional analysis is used to identify potential reinforcers by generating hypotheses about possible functions of a behaviour. Current methods of functional analysis emphasise observations of events, especially consequences, that occur in the immediate environment of the behaviour. While these methods are well suited for assessing behaviour that is reinforced frequently, they are less appropriate for assessing behaviour that is reinforced only intermittently. A new method for conducting functional analysis is presented that is designed to assess intermittently reinforced behaviour. The new method is illustrated using data that were gathered from an extension of a standard problem-solving format. Data are interpreted using the principle of revealed preference that arose from behavioural economics. The revealed preference method is illustrated using information provided by a client with a dependent personality disorder.

Quantum-kinetic Theory of Defect-mediated Recombination in Nanostructure-based Photovoltaic Devices

2013 ◽  
Vol 1493 ◽  
pp. 91-96 ◽  
Author(s):  
Urs Aeberhard
Keyword(s):  
Thin Film ◽  
Energy Gap ◽  
Photovoltaic System ◽  
Quasi Equilibrium ◽  
The Novel ◽  
Photovoltaic Devices ◽  
Novel Approach ◽  
Gap States ◽  
Non Equilibrium Green’S Function ◽  
Kinetic Treatment

ABSTRACTIn this paper, a quantum-kinetic equivalent of Shockley-Read-Hall recombination is derived within the non-equilibrium Green's function formalism for a photovoltaic system with selectively contacted extended-state absorbers and a localized deep defect state in the energy gap. The novel approach is tested on a homogeneous bulk absorber and then applied to a thin film photo-diode with large built-in field in the defect-rich absorber region. While the quantum-kinetic treatment reproduces the semi-classical characteristics for a bulk absorber in quasi-equilibrium conditions, for which the latter picture is valid, it reveals in the thin film case non-classical characteristics of recombination enhanced by tunneling into field-induced sub-gap states.

Application of Maple on Solving the Differential Problem of Rational Functions

2013 ◽  
Vol 479-480 ◽  
pp. 855-860
Author(s):  
Chii Huei Yu
Keyword(s):  
Problem Solving ◽  
Research Methods ◽  
Research Method ◽  
Rational Functions ◽  
The Other ◽  
Mathematical Software ◽  
Differential Problem ◽  
Binomial Theorem ◽  
Other Hand ◽  
Derivatives Of

This paper uses the mathematical software Maple as the auxiliary tool to study the differential problem of four types of rational functions. We can obtain the closed forms of any order derivatives of these rational functions by using binomial theorem. On the other hand, we propose four examples to do calculation practically. The research methods adopted in this study involved finding solutions through manual calculations and verifying these solutions by using Maple. This type of research method not only allows the discovery of calculation errors, but also helps modify the original directions of thinking from manual and Maple calculations. For this reason, Maple provides insights and guidance regarding problem-solving methods.

scholarly journals The structural and functional analysis of the human HSPA2 gene promoter region.

2007 ◽  
Vol 54 (1) ◽  
pp. 99-106 ◽  
Author(s):  
Wojciech Pigłowski ◽  
Radosława Nowak ◽  
Zdzisław Krawczyk ◽  
Dorota Scieglińska
Keyword(s):  
Functional Analysis ◽  
Cancer Cells ◽  
Gene Promoter ◽  
Human Tumor ◽  
Transcription Unit ◽  
Functional Study ◽  
Transient Transfection Assay ◽  
Basic Step ◽  
Cis And Trans ◽  
Minimal Region

HSPA2 is a human counterpart of the testis-specific rodent Hst70/Hsp70.2 gene. In contrast to the latter, the expression of the human HSPA2 gene is not limited to the testis, and recent data show that human tumor cells can express this gene at significant levels. The characteristics of HSPA2 expression suggests that it can influence the phenotype and survival of cancer cells similarly as overexpression of major members of the HSP70 gene family. Until now, neither the structure of the transcription unit of the human HSPA2 gene has been established nor a functional analysis of its promoter performed. In this study we established that the human HSPA2 gene, in contrast to its rodent counterparts, is intronless and has a single transcription start site. We also show that the same type of HSPA2 transcripts are synthesized in the testes and in cancer cell lines. In order to perform a functional study of the HSPA2 promoter, we used a transient transfection assay and found that the 392 bp fragment upstream of the ATG codon was a minimal region required for efficient transcription, while a 150 bp deletion from the 5' end of this region dramatically reduced the promoter activity. Delineation of the minimal promoter is a basic step toward identifying the cis and trans elements involved in the regulation of the HSPA2 gene expression in cancer cells.

scholarly journals Functional analysis of mutations of murine chromosome 17 with the use of tertiary trisomy.

Genetics ◽  
1991 ◽  
Vol 127 (4) ◽  
pp. 781-788
Author(s):  
A Ruvinsky ◽  
A Agulnik ◽  
S Agulnik ◽  
M Rogachova
Keyword(s):  
Functional Analysis ◽  
Gene Dosage ◽  
Tail Length ◽  
Proximal Region ◽  
The Other ◽  
Chromosome 17 ◽  
Recessive Mutations ◽  
T Complex ◽  
Functional Nature ◽  
Morphogenetic Effects

Abstract Analysis of the functional nature of mutations can be based on comparisons of their manifestation in organisms with a deletion or duplication of a particular chromosome segment. With the use of reciprocal translocation T(16;17)43H, it is feasible to produce mice with tertiary trisomy of the proximal region of chromosome 17. The mutations on chromosome 17 we tested included brachyury (T), hairpin tail (Thp), kinky (Fuki), quaking (qk), tufted (tf), as well as tct (t complex tail interaction), and tcl (t complex lethal) that are specific to t haplotypes. The set of dominant and recessive mutations was assigned to two groups: one obligatory, manifesting itself in the phenotype independently of the number of normal alleles in di- and trisomics, and the other facultative, phenotypically manifesting itself depending upon the dosage of mutant alleles. A model was derived from analysis of the interaction of the T and Thp mutations with t haplotypes. It seeks to explain the morphogenetic effects of the mutations observed in mice of different genotypes. The tir gene is postulated to reside on chromosome 17 within its framework. It is suggested that the gene dosage ratio at the tir and tct loci determines tail length.

scholarly journals Social Bonding dalam Pengelolaan Hutan Rakyat: Upaya Menuju Masyarakat Hutan yang Sejahtera

2019 ◽  
Vol 1 (1) ◽  
pp. 57
Author(s):  
Khabib Bima Setiyawan
Keyword(s):  
Functional Analysis ◽  
Forest Management ◽  
Management Strategies ◽  
Social Bonding ◽  
The Other ◽  
Tourist Attraction ◽  
Government Institutions ◽  
Bonding Capital ◽  
The Village ◽  
The Relationship

<div><p class="ABSTRAKen">The forest is the source of livelihood of the community around it, forest sustainbility management become important thing to do to ensure the sustainbility of the forest. This research discusses about forest management strategies in the Berjo village, in which consist of three different institutions, they are Taman Hutan Raya (Tahura), Perusahaan Hutan Negara Indonesia (Perhutani), and Lembaga Masyarakat Desa Hutan (LMDH). the aim of this research is to find out the forest management strategies, methode in this research is qualitaive with case studies approach, this research conducted in the village of Berjo, Karangayar city. Purposive sampling is used to select the respondents. Data collection is done by observation, interviews, and documentation. The analysis of the data using the in interactive functional analysis and validation of data using triangulation of sources. The results showed that forest management is achieved by collaboration among Government and non government institutions with their Sosial Bonding Capital which allows for interaction in sharing knowledge as well as glue relations between groups. Social Bonding is owned by LMDH and Tahura are on the intermediate level which means they obey formal but on the other hand they approach at the level of values, culture, and perception. While the relationship between the LMDH (a unit of BUMN) and Tahura (units of goverment departmen) are on the level of social capital that embraced a formalvalue corresponding their jobs desk which are conservation and production of the forest. LMDH along with Perhutani in forest management through partnership relationship. They work togehter in the safeguarding of forests and open tourist attraction. Whereas in the greening of the forest, the Perhutani, the LMDH Tahura and do reforestation.</p></div><p><em><br /></em></p>

scholarly journals Periaqueductal efferents to dopamine and GABA neurons of the VTA

2017 ◽  
Author(s):  
Niels R. Ntamati ◽  
Meaghan Creed ◽  
Christian Lüscher
Keyword(s):  
Functional Analysis ◽  
Ventral Tegmental Area ◽  
Periaqueductal Gray ◽  
Retrograde Tracing ◽  
The Other ◽  
Projection Neurons ◽  
Cell Type ◽  
Gaba Neurons ◽  
Other Hand ◽  
Cell Type Specific

AbstractNeurons in the periaqueductal gray (PAG) modulate threat responses and nociception. Activity in the ventral tegmental area (VTA) on the other hand can cause reinforcement and aversion. While in many situations these behaviors are related, the anatomical substrate of a crosstalk between the PAG and VTA remains poorly understood. Here we describe the anatomical and electrophysiological organization of the VTA-projecting PAG neurons. Using rabies-based, cell type-specific retrograde tracing, we observed that PAG to VTA projection neurons are evenly distributed along the rostro-caudal axis of the PAG, but concentrated in its posterior and ventrolateral segments. Optogenetic projection targeting demonstrated that the PAG-to-VTA pathway is predominantly excitatory and targets similar proportions of Ih-expressing VTA DA and GABA neurons. Taken together, these results set the framework for functional analysis of the interplay between PAG and VTA in the regulation of reward and aversion.

scholarly journals An Explorative Study of Men’s Masculinity Constructions and Proximity to Violence against Women.

2020 ◽  
Vol 9 (3) ◽  
pp. 284
Author(s):  
Peter Martin Jansson ◽  
Christian Kullberg
Keyword(s):  
Problem Solving ◽  
Gender Equality ◽  
Violence Against Women ◽  
Qualitative Interviews ◽  
The Other ◽  
Violent Crimes ◽  
Explorative Study

This explorative study aimed to develop an understanding of how a sample of two groups of men, considered to be situated at different ends of Connell’s masculinity continuum, construct their masculinity, and how these constructions relate to their proximity to violence against women (VAW). One group consisted of five men incarcerated for violent crimes (MIVC) that had previously used VAW. The other included five participants in the pro-feminist group Men Against Violence (MAV), without prior VAW. An abductive approach, using qualitative interviews, was employed. Results show that the MIVC participants appeared ambivalent, unreflective, and inconsistent in their masculinity constructions, and used VAW as part of their problem-solving repertoire. The MAV participants appeared to have a reflexive stance towards gender equality and consistently adopted inclusive ways of enacting masculinity and preventing VAW. The study can only provide some support to the postulated relationship between men’s masculinity positions and their attitudes toward VAW.

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