IMPLEMENTASI FUNGSI KEPEMIMPINAN KEPALA SEKOLAH DI SD INPRES ARMOPA IV BONGGO KABUPATEN SARMI

The aim of the study was to describe the implementation of school principal leadership in decision making, instruction, consultation, participation, and delegates’ roles. This study used descriptive qualitative method with a case study approach. The data source were from the school principal, teachers, school committee and supervisors. The data collection techniques were in-depth interviews, participatory observation, and documentation. The data validation technique was using extension of involvement, the persistent of observation, triangulation and peer reviews. The result of the research showed that the school principal of the Armopa IV Elementary School on Bonggo has implemented the 5 leadership roles which were (1) the principal in making decision involved the teachers and school committee, considering public interests, dare to make decisions on all the consequences, wise and open. (2) Instruction role showed that the principal mandates the teachers to have learning preparations such as Rencana Pelaksanaan Pembelajaran (RPP). (3) The consultation role was implemented through consultation on writing activities and program reports as well as being supportive and provide consultations for teachers. (4) Participation roles was implemented through the principal being a good role model and active in participating to all school activities. (5) Delegate roles was implemented through building up trust on teachers and staff to also get involve in outside school meetings, leading meeting and leader of Monday ceremonies. Key Words:  Leadership Roles, School Principal, Elementary School 

Quarters

Quarters is a poem that depicts a struggle with ethnicity and heritage. How does someone react to the political climate when they pass for white, but are only two generations away from Latin immigrants. What is their responsibility? What parts of their heritage can they express

Electrocatalyst materials for low-temperature hydrogen fuel cells

Fuel cells have emerged as an alternative to satisfy the need of energy systems with net-zero emissions. Although fuel cells date back to the 1800s, it is only during the last decades that research and development has enabled true commercialization. The growing interest in fuel cells implementation goes hand in hand with the decrease in green H2 production cost, which makes fuel cells a cornerstone in promising energy systems based on H2. It is crucial that the transport sector shifts towards inexpensive carbon-free fuel alternatives, which is possible with H2 owing to its high energy density. A broad implementation of fuel cells is, however, impeded by the high cost of fuel cell systems, which can be attributed to the Pt-based catalyst currently used in low-temperature hydrogen fuel cells. As Pt is a scarce expensive material, development of new efficient and inexpensive electrocatalysts is essential for large-scale fuel cells implementation.Although many strategies have been explored to reduce the amount of Pt without compromising the power output and lifetime, electrocatalyst development is currently hindered by the lack of mechanistic understanding. In order to gain a better understanding of the mechanisms behind the electrochemical reactions in proton exchange membrane fuel cells (PEMFC) and anion exchange membrane fuel cells (AEMFC), this thesis delves into both the fabrication and the characterization of electrocatalysts. A versatile platform was established to study model system catalysts with the aim to test electrocatalytic materials and provide reliable comparisons, making their performance rationalizable in terms of geometric and electronic structure. Pt-rare earth metal (REM) alloys were studied with respect to both their activity and stability towards the oxygen reduction reaction (ORR) in PEMFCs. Measurements with different model systems indicated an overall increase in their specific activity, but it was found that the addition of REM could compromise their stability. Different Ag alloys were studied for the ORR in alkaline conditions. It was found that alloying could improve the binding energy of oxygenated species, which enhances their ORR activity. Hydrogen oxidation reaction (HOR) and ORR activity of PdNi annealed thin films in alkaline media were investigated to pinpoint the mechanism behind the increased activity. This provides insights to the fundamental principles that lead to a good catalyst efficiency, which was also tested with the addition of different ionomers. By providing additional insights on the mechanistic aspects of fuel cell reactions, the presented work takes a step in tailoring new electrocatalytic materials that could eventually outperform bare Pt in terms of both activity and stability while reducing the total fuel cell cost

Thermophiles and Thermozymes

Interest in the study of life in hot environments, both with respect to the inhabiting microorganisms and the enzymes they produce, is currently very high. The biological mechanisms responsible for the resistance to high temperatures are not yet fully understood, whereas thermostability is a highly required feature for industrial applications. In this e-book, the invited authors provide diverse evidence contributing to the understanding of such mechanisms and the unlocking of the biotechnological potential of thermophiles and thermozymes

Ramón Luis Valcárcel Siso (30/06/1995 - 08/07/1999) (PP). Discurso de investidura: Sesión Plenaria número 2, celebrada los días 29 y 30 de Junio de 1995

Abstract not availabl

Ramón Luis Valcárcel Siso (26/06/2003 - 26/06/2007) (PP). Discurso de investidura: Sesión Plenaria número 2, celebrada los días 25 y 26 de Junio de 2003

Abstract not availabl

Ramón Luis Valcárcel Siso (26/06/2007 - 22/06/2011) (PP). Discurso de investidura: Sesión Plenaria número 2, celebrada los días 25 y 26 de Junio de 2007

Abstract not availabl