Teacher/Pupil interaction and pupil progress: A small scale comparative study of special language units and normal classrooms

1986 ◽  
Vol 25 (2-3) ◽  
pp. 231-250
Author(s):  
Ian R. Claydon
Keyword(s):  
Comparative Study ◽  
Small Scale ◽  
Special Language

scholarly journals A cross-cultural comparison of music education experiences and ambitions in two Spanish and English primary schools

2016 ◽  
Vol 35 (3) ◽  
pp. 381-390 ◽  
Author(s):  
Elinor Hardcastle ◽  
Stephanie Pitts ◽  
José Luis Aróstegui
Keyword(s):  
Music Education ◽  
Comparative Study ◽  
Thematic Analysis ◽  
Primary Schools ◽  
Classroom Practices ◽  
Cross Cultural ◽  
Small Scale ◽  
Cultural Comparison ◽  
Music Curriculum ◽  
Cross Cultural Comparison

A small-scale comparative study of music education provision in two Spanish and English primary schools was carried out in 2013–14, using questionnaires, interviews and observations. The study investigated the musical experiences of the children in the two schools, their ambitions for their musical futures, and the classroom practices and policy contexts that shaped these encounters with musical learning. Through thematic analysis and comparison of the data from the two schools, we examine music in children’s lives, music in the classroom, and musical ambitions and values, and consider how well the music curriculum serves the children in each setting.

A Comparative Study on Hydrogen Production from Small-Scale PV and CSP Systems

2018 ◽  
pp. 723-730 ◽  
Author(s):  
Samir Touili ◽  
Ahmed Alami Merrouni ◽  
Youssef El Hassouani ◽  
El Ghali Bennouna ◽  
Abdellatif Ghennioui ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Comparative Study ◽  
Small Scale

scholarly journals Vitamin D and cardio-metabolic biomarkers: small-scale comparative study between Libyan migrants and resident women in Serbia

2019 ◽  
Vol 14 (1) ◽  
pp. 1622364
Author(s):  
Nevena Vidovic ◽  
Fathia Faid ◽  
Ana Pantovic ◽  
Marina Nikolic ◽  
Jasmina Debeljak-Martacic ◽  
...  
Keyword(s):  
Vitamin D ◽  
Comparative Study ◽  
Small Scale ◽  
Metabolic Biomarkers

scholarly journals Comparative Study In The Bibiani, Bolgatanga, Dunkwa And Tarkwa Mining Districts Of The Minerals Commission Of Ghana

2012 ◽  
Vol 1 (1) ◽  
pp. 19-34
Author(s):  
George Lord Opoku-Antwi ◽  
Kwaku Amofah ◽  
Kofi Nyamaah-Koffuor
Keyword(s):  
Comparative Study ◽  
Gold Mining ◽  
Social Economic ◽  
Mining Industry ◽  
Rural Livelihoods ◽  
Environmental Issues ◽  
Integrated Approach ◽  
Small Scale ◽  
Mining Operations ◽  
Mining Districts

This paper aims to provide a comparative study on the Ghanaian small-scale gold mining industry in the Bibiani, Bolgatanga, Dunkwa and Tarkwa Districts of the Minerals Commission of Ghana. Variations in production, employment, number of licensed operators/concessions were the main focus of the paper. A two-way analysis of variance (ANOVA) was used to 1) test for the means of equality for the period 2005 to 2008 in order to find the column effect and 2) test for the means of equality between the mining districts (distance) to help find the column effect. It then looks at the structure-conduct-performance to explain the differences in the mining districts. The paper concludes that even though the small-scale mining sector in Ghana is beset with a number of challenges, it should be recognised as a significant generator of rural livelihoods that has the potential to alleviate poverty and be a tool for sustainable development. Assistance based on an integrated approach that considers operational, financial, organisational, social, economic, legal, technical and environmental issues should be offered to enhance small-scale gold mining operations in Ghana.

Comparative Study of Adaptive Hamiltonian Control Laws for DC Microgrid Stabilization: An Fuel Cell Boost Converter

2021 ◽  
Author(s):  
Damien Guilbert ◽  
Babak Nahid-Mobarakeh ◽  
Serge Pierfederici ◽  
Nicu Bizon ◽  
Pongsiri Mungporn ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Comparative Study ◽  
Smart Grids ◽  
Boost Converter ◽  
Proton Exchange ◽  
Small Scale ◽  
Control Law ◽  
Energy Storage Devices ◽  
Control Laws ◽  
Power Sources

Future smart grids can be seen as a system of interlinked microgrids, including small-scale local power systems. They consist of main power sources, external loads, and energy storage devices. In these microgrids, the negative incremental impedance behavior of constant power loads (CPLs) is of major concern since it can lead to instability and oscillations. To cope with this issue, this article aims to propose a comparative study of adaptive Hamiltonian control laws, also known as interconnection and damping–assignment–passivity–based controllers (IDA-PBC). These control laws are developed to ensure the stability of the DC output voltage of a boost converter supplied by a proton exchange membrane fuel cell (PEMFC) source. To validate the develop control laws, experiments have been performed on a fit test bench including a real 2.5 kW PEMFC stack (hydrogen is supplied by a reformer engine), a DC-DC step-up circuit, and a real-time controller dSPACE (implementation of the control laws). Moreover, a comparative study has been carried out between the proposed three adaptive Hamiltonian control laws and a classic linear cascaded proportional–integral (PI) control law. The obtained results by simulations through MATLAB/SimulinkTM and experimentally have allowed demonstrating that the third Hamiltonian control law presents the best performances over the other control laws.

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